JP2599904Y2 - Drainage structure in building foundation - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage structure in a foundation of a building, and more particularly, to a drainage passage communicating between the inside and the outside of a foundation surrounded by the rise of the foundation of the building, in particular, a moisture-proof foundation. The present invention relates to a drainage structure in a foundation of a building in which is formed.

[0002]

2. Description of the Related Art Generally, a foundation structure of a building has a rising 2 of a foundation as shown in FIG. 5, and a drain passage 4 comprising a drain pipe is provided for each block 3, 3 in the foundation surrounded by the rising 2. Can be Further, a moisture-proof concrete 5 is laid in the block 3, and shackles 6, 6,... Moistureproof concrete 5
Although it has a moisture-proof effect on the building, it is generally formed to be inclined toward the drain passage 4, so that rainwater or the like that accumulates during construction of the building is efficiently removed to the outside through the drain passage 4. Further, in the foundation structure having such a drainage passage 4, the drainage passage 4 is closed when the building is completed, thereby preventing inflow of water due to flooding or the like from the outside.

[0003]

However, in the conventional drainage structure in the foundation of a building, after completion of the building, a structure is provided to prevent water from entering the block 3 due to flooding from the outside. If water is generated inside the building due to a water leakage accident or other reasons, the water is condensed in the block 3 because there is no drainage path. Such accumulation of water under the floor facilitates generation of mold and the like. Therefore, if the discovery of the water in the block 3 is delayed, the building may be seriously affected. Therefore, the purpose of the present invention is
We propose a drainage structure in the foundation of a building that can maintain the building for a long time without causing water accumulation in the foundation even if flooding occurs or a water leak accident occurs inside the building. Is to do.

[0004]

This invention SUMMARY OF THE INVENTION are in basic in the drainage structure of a building drainage passage communicating the internal and external of the foundation surrounded by the rise of the building foundation is formed, on the drain passage Providing a check valve for water flow , and connecting the drainage passage
The above object has been achieved by proposing a drainage structure in a foundation of a building, characterized in that the state is maintained after the completion of the building. Further, moisture-proofing concrete is laid in 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 element that moves upward by buoyancy to close the passage. is there.

[0005]

According to the present invention, the drainage passage is not closed even after the completion of the building, and a check valve is provided in the drainage passage from outside the rising of the foundation instead. Such a check valve comprises a buoyancy valve element capable of closing a passage for drainage, and such a buoyancy valve element moves upward when water overflows due to flooding or the like and closes the passage for drainage. There is action. For this reason,
Even if submergence occurs, water flows backward through the drainage passage, and water does not accumulate in the foundation. On the other hand, even if there is a water leak accident in the building, the water generated in the foundation is drained through the drain passage. For this reason, the state of pooled water does not occur in the foundation, and mold and the like do not occur under the floor or on the floor.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a drainage structure in a building foundation according to the present invention will be described below with reference to the 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. FIG. 2 is a cross-sectional view of a drainage portion of a drainage structure in a foundation of the building of FIG. 1. FIG. 3 is a cross-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, the drainage structure 1 in the foundation of a building according to the present embodiment is provided with a drainage passage 4 communicating the inside 3 of the foundation surrounded by the rising 2 of the foundation of the building and the outside. This is similar to the conventional drainage structure in the foundation of a building. Thus, the drainage structure 1 in the foundation of the building is provided with the check valve 10 for water in the drainage passage 4. Also,
Moisture-proof concrete 5 is laid in the foundation 3, and the check valve 10 is attached to the drain passage 4 from the outside of the rising 2 of the foundation, and moves upward by buoyancy during flooding or the like to close the passage. It has a body 13.

The drainage structure 1 in the foundation of the building according to the present embodiment will be further described. As shown in FIGS. 1 to 3, a moisture-proof concrete 5 is laid on a portion surrounded by the foundation rising 2. Further, as shown in FIG. 2, a drainage passage 4 for communicating the inside 3 of the foundation and the outside is formed at a predetermined foundation rising 2. The moisture-proof concrete 5 protects the floor and the like of the building formed above from moisture and the like, and plays a role of draining rainwater accumulated in the foundation 3 during construction to the outside through the drain passage 4. That is, the surface of the moisture-proof concrete 5 is inclined toward the drain passage 4. Also, shackles 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 drain passage 4 is provided with a drain pipe 7 made of polyvinyl chloride or the like.
It is used according to the diameter of, preferably 15-20 mm
Is used. At the outer end 7A of the drainage pipe 7,
The check valve 10 is attached via the relay pipe 8.
The check valve 10 comprises an elbow pipe 11, an elbow pipe 1
1 comprises a valve seat 12, a spherical buoyancy valve 13, and a lattice lid 14 attached to the lower end opening of the elbow pipe 11. The bent end of the elbow pipe 11 is connected to the relay pipe 8, and the valve seat 12 is together with the lattice lid 14 in the buoyancy valve body 1.
Three vertical movement champers 15 are formed. Buoyancy valve 13
Moves up and down in the direction of the arrow shown in the figure in the vertical movement chamber 15 so as to close the opening 12A of the valve seat 12 when it is located above.

In the thus constructed drainage structure 1 in the foundation of a building, the drainage passage 4 is not blocked even after the building is completed.
Backflow of water such as flooding can be prevented by the upward movement of the buoyancy valve body 13 of the check valve 10. On the other hand, even if there is a water leak accident in the building, the water generated in the foundation 3 is quickly drained through the drain passage 4. For this reason, there is no pool of water in the inside of the foundation 3, and mold or the like does not occur under the floor or the floor, and damage due to moisture or the like does not occur.

In the above embodiment, the buoyancy valve body 13 is spherical. However, the present invention is not limited to this. If the buoyancy valve body 13 is buoyant due to flooding or the like and closes the valve seat 12 when moving upward, the shape is limited. It is not something to be done. Further, the valve element does not need to be freely held in the chamber 15, and the valve seat 12
, For example, one end of which is closed by a valve seat opening 12A
The movable chamber and the like are not necessarily required as long as the valve body structure is fixed in the vicinity of the valve body and the free end is flexible and buoyant.

Next, another embodiment of this embodiment will be described with reference to FIGS. 4 (A) and 4 (B). 4 (A) and 4 (B) are cross-sectional views of a check valve of a drainage structure in a foundation of a building according to another embodiment. The drainage structure in the foundation of a building according to the present embodiment is configured substantially in 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, the difference from the embodiment of FIG.
The check valve 20A has a female screw formed on the inner surface of the bent end 11A of the elbow pipe 11 and a male screw formed on the outer surface of the end 7A of the drain pipe 7.
4B, a male screw is formed on the outer surface of the bent end portion 11A of the elbow pipe 11, and the check valve 20B shown in FIG.
A female screw is formed on the inner surface of the end 7 </ b> A of the drain pipe 7. Therefore, in the check valves 20A and 20B in the drainage structure in the foundation of such a building, in addition to having the same operation and effect as the embodiment of FIG. 1, they can be easily attached to the drainage pipe 7.

[0013]

[Effect of the invention] The drainage structure in the foundation of the building according to the invention is
Or cause flooding and the like, also even if the building interior water damage has occurred, without generating such accumulation of water in the foundation, it is possible to maintain the building satisfactorily long.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of a drainage portion of a drainage structure in a foundation of the building of FIG. 1;

FIG. 3 is a sectional view of a check valve of the drainage structure in the foundation of the building of FIG. 1;

FIGS. 4A and 4B are cross-sectional views of a check valve of a drainage structure in a foundation of a building in another embodiment.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drainage structure in the foundation of a building 2 Rise of a foundation 3 In the foundation 4 Drainage passage 5 Moistureproof concrete 6 Bundling stone 7 Drainage pipe 8 Intermediate pipe 10, 20A, 20B Backflow prevention valve 11 Elbow pipe 12 Valve seat 13 Buoyancy valve body 14 Grid lid 15 Vertical movement chamber

Claims (2)

(57) [Scope of request for utility model registration] 1. A basic in the drainage structure of a building drain passage is formed for communicating the <br/> Internal and the outside of the foundation surrounded by the rise of the building foundation, the backflow prevention of water to the water discharge passage A valve is provided so that the communication state of the drainage passage is maintained after the building is completed.
A drainage structure in the foundation of a building, characterized in that: 2. A moisture-proof concrete is laid in the foundation, and the check valve is attached to the drainage passage from outside the rising of the foundation, and moves up by buoyancy to close the passage. The drainage structure in a foundation of a building according to claim 1, wherein the drainage structure is provided.