JP2021095669A - Underfloor inundation prevention device - Google Patents

Abstract

To provide an underfloor inundation prevention device capable of securing enough underfloor ventilation in ordinary time, and coping with abrupt rise of a water level in inundation.SOLUTION: An underfloor inundation prevention device 1 is provided at an underfloor vent hole 100 formed on the foundation part of a building 10, and is disposed inside a building. The underfloor inundation prevention device 1 has a ventilation member 2 formed with a vent hole 21, a movable opening/closing lid 3 and a container 5. The movable opening/closing lid 3 is formed to be movable between an open position PS1 opening the vent hole 21 and a closed position of the vent hole 21. The container 5 is indirectly connected to the movable opening/closing lid 3, and stores water flowing from outside of the building toward the underfloor through the underfloor vent hole 100. The movable opening/closing lid 3 is placed at an open position PS1 when water is not stored in the container 5, moves from the open position PS1 toward a closed position as water is accumulated in the container 5. When water equal to or more than a predetermined capacity is stored in the container 5, the lid 3 is placed at the closed position.SELECTED DRAWING: Figure 2

Description

The present invention relates to an underfloor inundation prevention device installed in a vent formed in a base portion of a house in order to protect the house from floods caused by typhoons and guerrilla rainstorms.

Conventionally, a device capable of preventing water from entering through a vent has been proposed in an emergency. For example, the inundation mitigation device described in Patent Document 1. Specifically, the inundation mitigation device (1) includes a first side surface (47) in which a large number of fine ventilation holes are formed, a second side surface (44) in which a plurality of fine ventilation holes are formed, and these. It is a box body (4) arranged so as to cover the front surface of the underfloor ventilation hole (3) with a moving space (45) defined between the side surfaces of the box. The box body (4) rises along the moving space (45) of the box body (4) as the water surface rises, and a plurality of passages formed on the second side surface (44) using the shielding sheet. A ventilation hole shielding mechanism (5) for sequentially closing the pores (43) is provided.

Japanese Unexamined Patent Publication No. 2015-227736

However, if a side surface (mesh-like) in which a large number of fine ventilation holes are formed in the underfloor ventilation holes (3) is used as in the inundation mitigation device of Patent Document 1, the underfloor ventilation at normal times is caused by the adhesion of dust and the like. There is a problem that is insufficient. Further, there is a possibility that the ventilation hole shielding mechanism (5) does not operate well in an emergency due to the adhesion of dust or the like, and since it is a winding type, there is a problem in dealing with a sudden rise in water level.

Therefore, an object of the present invention is to provide an underfloor inundation prevention device capable of sufficiently ensuring underfloor ventilation at normal times and responding to a sudden rise in water level at the time of inundation.

In order to achieve the above object, the present invention is an underfloor inundation prevention device provided in an underfloor vent formed in the foundation of a building and arranged inside the building, and the vent member having the vent formed therein. A movable opening / closing member configured to be movable between an open position for opening the vent and a closing position for closing the vent, and an underfloor vent connected to the movable opening / closing member from outside the building. A container for accommodating water passing through and going under the floor is provided, and the movable opening / closing member is arranged in the open position when the container does not contain water, and the movable opening / closing member is arranged as the water accumulates in the container. An underfloor inundation prevention device characterized in that it moves from an open position toward the closed position and is arranged in the closed position when a predetermined volume or more of water is contained in the container. providing.

Here, the ventilation member is arranged so as to incline diagonally downward from the upper side of the underfloor ventilation port toward the inside of the building, and the movable opening / closing member is when water is not contained in the container. It is placed in the open position in a substantially horizontal state, and as water accumulates in the container, it transitions from the substantially horizontal state to an inclined state in which it is inclined along the ventilation member, and the container is accommodated in a predetermined volume or more of water. In such a case, it is preferable that the container is tilted and arranged at the closed position.

Further, a rotating shaft member is further provided, and the building internal side of the movable opening / closing member is connected to the rotating shaft member, and the container sandwiches the rotating shaft member with the movable opening / closing member. The rotating shaft member is arranged on the opposite side of the container and is connected to the rotating shaft member, and the container moves downward as water collects in the container, so that the rotating shaft member connected to the container is connected to the container. It is preferable that the movable opening / closing member that rotates and is connected to the rotation shaft member rotates from the open position to the closed position.

Further, it is preferable that the bottom surface of the container is formed with a discharge hole having a size for discharging the water accumulated in the container to the outside at a speed slower than the speed at which the water accumulates in the container.

Further, it is preferable that the ventilation member is provided with a holding member for holding the movable opening / closing member at the closing position when the movable opening / closing member is arranged at the closing position.

According to the present invention, when water is not contained in the container, the movable opening / closing member is arranged in the open position. Further, as water collects in the container, the movable opening / closing member moves from the open position to the closed position. Then, when a predetermined volume or more of water is contained in the container, the movable opening / closing member is arranged at the closed position. Therefore, it is possible to sufficiently secure underfloor ventilation in a normal time when water is not contained in the container. In addition, when water is contained in the container, the speed at which the movable opening / closing member moves from the open position to the closed position changes according to the speed at which the water collects in the container, so that the water level can rise sharply. It is possible.

The perspective view which shows the underfloor inundation prevention device (when opened) by embodiment of this invention. FIG. 2 is a cross-sectional view taken at the II-II position in FIG. The perspective view which shows the state of the underfloor inundation prevention device (when closed). FIG. 3 is a cross-sectional view taken at the IV-IV position in FIG. The figure which shows the underfloor inundation prevention device (when opened) by a modification. The figure which shows the underfloor inundation prevention device (when closed) by a modification.

<1. Embodiment>
The underfloor inundation prevention device according to the embodiment of the present invention will be described with reference to FIGS. 1 to 4. In the following, as an example of the underfloor inundation prevention device, the underfloor inundation prevention device 1 shown in FIG. 1 will be illustrated.

As shown in FIGS. 1 and 2, the underfloor inundation prevention device 1 includes a ventilation member 2, a movable opening / closing lid 3, a bending member 4, a container 5, a hinge (rotating shaft member) 6, and a container support member 7. It is composed of.

The ventilation member 2 is formed with a ventilation port 21 for allowing air to flow under the floor so as to communicate with the underfloor ventilation port 100 (FIG. 2) formed in the foundation portion of the building 10 (FIG. 2).

The ventilation member 2 is arranged so as to be inclined diagonally downward from the upper side of the underfloor ventilation port 100 toward the inside of the building.

Specifically, the end of the ventilation member 2 on the underfloor ventilation port 100 side is fixed to the upper side of the underfloor ventilation port 100 and the inner surface of the building 10. Further, the end portion of the ventilation member 2 on the inner side of the building is continuous with the bending member 4 described later.

The movable opening / closing lid 3 is an example of the movable opening / closing member according to the present invention, and has an open position PS1 (see FIG. 2) for opening the vent 21 and a closing position PS2 (see FIG. 4) for closing the vent 21. It is configured to be movable between.

Specifically, the end of the movable opening / closing lid 3 on the inner side of the building is connected to a hinge 6 which is a rotation axis of the movable opening / closing lid 3. That is, the movable opening / closing lid 3 is configured to be rotatable between the open position PS1 (see FIG. 2) in a substantially horizontal state and the closed position PS2 (see FIG. 4) in an inclined state via the hinge 6. ing.

The bending member 4 is a plate-shaped member having a substantially L-shaped cross section that continuously extends downward from the end portion on the inner side of the building among the ventilation members 2. The end of the bending member 4 on the underfloor vent 100 side is fixed to the lower side of the underfloor vent 100 and the inner surface of the building 10.

As shown in FIG. 1, side plates 41 and 42 are provided on the left and right sides of the ventilation member 2 and the bending member 4. As a result, a space SP surrounded by the ventilation member 2, the bending member 4, and the side plates 41 and 42 is formed. As shown in FIG. 4, a part of the water WT that has flowed through the underfloor vent 100 at the time of flooding is accumulated in the space SP. In FIG. 4, the water WT is indicated by dots.

The container 5 is indirectly connected to the movable opening / closing lid 3 via the container support member 7 and the hinge 6. The container 5 is provided at a position capable of accommodating a part of water (see the broken line arrow in FIG. 2) that goes under the floor from the outside of the building through the underfloor vent 100 and the vent 21 when flooded.

As shown in FIGS. 2 and 4, the hinge 6 is an example of a rotating shaft member according to the present invention, and is configured to include two wings 61 and 62.

Further, the container support member 7 is a rotation shaft 73 that rotatably connects the connection surface 71 connected to the hinge 6, the container support portion 72 that supports the container 5, and the connection surface 71 and the container support portion 72. It is configured with and.

The connection surface 71 of the movable opening / closing lid 3 and the container support member 7 are both connected to the wings 61 of the hinge 6. Further, the bending member 4 is connected to the wings 62 of the hinge 6. Since the bending member 4 is fixed to the building 10, it does not rotate, but the connecting surface 71 of the movable opening / closing lid 3 and the container support member 7 rotates via the hinge 6.

The container 5 is arranged on the side opposite to the movable opening / closing lid 3 with the hinge 6 interposed therebetween, and is connected to the hinge 6 via the container support member 7.

The container 5 is supported by a container support portion 72 that constitutes the container support member 7. As shown in FIG. 2, when water is not contained in the container 5, the movable opening / closing lid 3 is placed in the open position PS1 in a substantially horizontal state.

As the water collects in the container 5, the container 5 moves downward due to the weight of the water. At that time, the connecting surface 71 rotates about the rotation shaft 73 in a direction away from the container support portion 72.

When the connecting surface 71 rotates in the direction away from the container support portion 72, the wings 61 of the hinge 6 connected to the connecting surface 71 and the movable opening / closing lid 3 connected to the wings 61 rotate.

As a result, the movable opening / closing lid 3 gradually transitions from a substantially horizontal state to an inclined state in which it is inclined along the ventilation member 2. In other words, the movable opening / closing lid 3 rotates from the open position PS1 to the closed position PS2.

Then, when the container 5 contains a predetermined volume or more of water, the movable opening / closing lid 3 is arranged at the closed position PS2 as shown in FIGS. 3 and 4. Along with this, the ventilation port 21 of the ventilation member 2 is closed by the movable opening / closing lid 3 to prevent water from entering under the floor.

Further, once the movable opening / closing lid 3 is arranged at the closed position PS2, it is held at the closed position PS2 by a magnet (an example of the holding member according to the present invention) (not shown) provided on the ventilation member 2.

Further, as shown in FIGS. 2 and 4, a discharge hole 51 is formed on the bottom surface of the container 5. The discharge hole 51 has a size of discharging the water accumulated in the container 5 to the outside at a speed slower than the speed at which the water accumulates in the container 5.

Therefore, at the time of flooding, water collects in the container 5 at once, the movable opening / closing lid 3 moves to the closing position PS2, and the ventilation port 21 of the ventilation member 2 is closed. After that, the water collected in the container 5 is slowly discharged under the floor through the discharge hole 51.

According to the above-described embodiment, when the water WT is not contained in the container 5, the movable opening / closing lid 3 is arranged at the open position PS1 (FIG. 2). Further, as the water WT accumulates in the container 5, the movable opening / closing lid 3 moves from the open position PS1 (FIG. 2) to the closed position PS2 (FIG. 4). Then, when the container 5 contains a water WT having a predetermined capacity or more, the movable opening / closing lid 3 is arranged at the closed position PS2 (FIG. 4).

Therefore, it is possible to sufficiently secure underfloor ventilation in a normal time when the container 5 does not contain the water WT. Further, when the water WT is contained in the container, the speed at which the movable opening / closing lid 3 moves from the open position PS1 to the closed position PS2 changes according to the speed at which the water WT accumulates in the container 5, so that the speed is rapid. It is possible to respond to rising water levels.

Further, according to the above-described embodiment, the ventilation member 2 is arranged so as to be inclined diagonally downward from the upper side of the underfloor ventilation port 100 toward the inside of the building. Then, when the water WT is not contained in the container 5, the movable opening / closing lid 3 is placed in the open position PS1 in a substantially horizontal state. Further, the movable opening / closing lid 3 transitions from a substantially horizontal state to an inclined state in which it is inclined along the ventilation member 2 as the water WT accumulates in the container 5. Then, when the container 5 contains a water WT having a predetermined capacity or more, the movable opening / closing lid 3 is inclined and arranged at the closed position PS2.

Therefore, the ventilation member 2 is arranged so as to extend in the vertical direction, and the rotation distance of the movable opening / closing lid 3 from the open position to the closed position is compared with that of the movable opening / closing lid 3 rotating by about 90 degrees. Can be shortened, and the vent 21 of the ventilation member 2 can be closed relatively early when flooded.

Further, according to the above-described embodiment, a discharge hole 51 having a size for discharging the water accumulated in the container 5 to the outside is formed on the bottom surface of the container 5 at a speed slower than the speed at which the water accumulates in the container 5. ing. Therefore, the movable opening / closing lid 3 is moved to the closed position PS2 by utilizing the weight of the water accumulated in the container 5, the vent 21 of the ventilation member 2 is closed, and then the water accumulated in the container 5 is discharged under the floor. It is possible to do. As a result, the worker does not have to go under the floor just to discharge the water accumulated in the container 5.

Further, according to the above-described embodiment, the movable opening / closing lid 3 is held at the closed position PS2 by a magnet (not shown) provided on the ventilation member 2. Therefore, it is possible to suppress the fluttering of the movable opening / closing lid 3 and more reliably prevent water from entering under the floor.

<2. Modification example>
The underfloor inundation prevention device according to the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the range described in the claims.

For example, in the above-described embodiment, the case where the idea of the present invention is applied to the underfloor inundation prevention device 1 shown in FIGS. 1 to 4 is illustrated, but the present invention is not limited to this, and the underfloor inundation prevention device 8 shown in FIGS. It may be applied to.

As shown in FIGS. 5 and 6, the underfloor inundation prevention device 8 includes a ventilation surface 81, a movable opening / closing surface 83, and a container 85.

The ventilation surface 81 is a surface fixed to the inner surface of the building in the vicinity of the underfloor ventilation port, and is an example of the ventilation member according to the present invention. The ventilation surface 81 is formed with two ventilation holes 81H that are vertically separated from each other.

The movable opening / closing surface 83 is a surface sandwiched between the ventilation surface 81 and the building 10, and is an example of the movable opening / closing member according to the present invention. The movable opening / closing surface 83 is formed with two vents 83H that are vertically separated from each other.

The container 85 is a member connected to the lower end of the movable opening / closing surface 83 described above, and can accommodate water inside.

As shown in FIG. 5, the movable opening / closing surface 83 is arranged at the open position PS1 in which the vent 81H and the vent 83H communicate with each other when the container 85 does not contain the water WT (when not flooded). ..

At the time of flooding, when the water WT invades the inside of the building through the vent 81H and the vent 83H and the water WT starts to accumulate in the container 85, the movable opening / closing surface 83 is opened at the opening position PS1 (by the weight of the water WT). It moves from FIG. 5) toward the closed position PS2 (FIG. 6) where the vent 81H and the vent 83H do not communicate with each other.

When the container 85 contains a water WT having a predetermined capacity or more, the movable opening / closing surface 83 is arranged at the closed position PS2, and the invasion of the water WT is completely prevented.

According to the above-described modification, it is possible to sufficiently secure underfloor ventilation in a normal time when the container 85 does not contain the water WT. Further, when the water WT is contained in the container 85, the speed at which the movable opening / closing surface 83 moves from the open position PS1 to the closed position PS2 changes according to the speed at which the water WT accumulates in the container 85. It is possible to cope with the rise in water level.

As described above, the underfloor inundation prevention device according to the present invention is suitable for preventing water from flowing under the floor in the event of a disaster.

1 Underfloor inundation prevention device, 2 Ventilation member, 3 Movable opening / closing lid, 4 Bending member, 5 Container,
6 hinges, 7 container support members, 8 underfloor inundation prevention devices, 10 buildings, 21 vents,
41, 42 side plates, 51 discharge holes, 61, 62 blades, 71 connection surfaces, 72 container supports,
73 Rotating shaft, 81 Ventilation surface, 81H Ventilation port, 83 Movable opening / closing surface, 83H Ventilation port,
85 containers, 100 underfloor vents, PS1 open position, PS2 closed position

Claims (5)

An underfloor inundation prevention device installed inside the building, which is installed in the underfloor ventilation holes formed at the foundation of the building.
Ventilation member with vents and
A movable opening / closing member configured to be movable between an open position for opening the vent and a closed position for closing the vent.
A container connected to the movable opening / closing member and accommodating water flowing from the outside of the building through the underfloor ventilation port to the underfloor.
With
The movable opening / closing member is arranged in the open position when water is not contained in the container, moves from the open position to the closed position as water accumulates in the container, and is predetermined to the container. An underfloor inundation prevention device characterized in that it is configured to be arranged in the closed position when a capacity or more of water is stored. The ventilation member is arranged so as to incline diagonally downward from the upper side of the underfloor ventilation port toward the inside of the building.
The movable opening / closing member is placed in the open position in a substantially horizontal state when water is not contained in the container, and as water accumulates in the container, the movable opening / closing member moves from the substantially horizontal state along the ventilation member. The underfloor inundation prevention according to claim 1, wherein when the container transitions to an inclined inclined state and a predetermined volume or more of water is contained in the container, the container becomes the inclined state and is arranged at the closed position. apparatus. Further equipped with a rotating shaft member,
The inner side of the building among the movable opening / closing members is connected to the rotating shaft member.
The container is arranged on the side opposite to the movable opening / closing member with the rotating shaft member interposed therebetween, and is connected to the rotating shaft member.
As the water collects in the container, the container moves downward to rotate the rotating shaft member connected to the container, so that the movable opening / closing member connected to the rotating shaft member rotates. The underfloor inundation prevention device according to claim 2, wherein the device rotates from the open position to the closed position. From claim 1, the bottom surface of the container is formed with a discharge hole having a size for discharging the water accumulated in the container to the outside at a speed slower than the speed at which the water accumulates in the container. The underfloor inundation prevention device according to any one of 3. Claim 1 is characterized in that the ventilation member is provided with a holding member for holding the movable opening / closing member in the closed position when the movable opening / closing member is arranged in the closed position. The underfloor inundation prevention device according to any one of 4 to 4.

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