JP7665366B2 - Water ingress prevention ventilation device - Google Patents

Description

This invention relates to a water infiltration prevention and ventilation device that prevents water from entering through an outside air intake on the underside of an exterior wall panel during floods, etc.

Patent Document 1 discloses a foundation drainage system that includes a wall that forms at least a part of a passageway that connects the space between the foundation of a structure and the foundation that supports the foundation with the outdoor side of the foundation, a partition wall that is fixed to the wall wall and has an opening that is a part of the passageway and blocks the passageway, and a movable member that is located below the partition wall, is configured to float on water, has a seal part that can cover the opening when in contact with the entire periphery of the opening from below, and is movable between a separated position where it is separated from the partition wall to open the opening and a contact position where the seal part covers and seals the opening.

Patent Document 2 also discloses a foundation drain that can prevent water from entering a structure during a flood, and Patent Document 3 discloses an underfloor ventilation device with a water-stop function in which a water stop is slid like a sliding door inside the groove of the frame body to open and close the underfloor ventilation opening, and rubber or a soft resin like rubber is used as a sealing material on the surfaces of the frame body and the groove body that come into contact with other components to provide a waterproof function.

JP 2017-95999 A JP 2016-132869 A JP 2007-239181 A

However, the above-mentioned conventional foundation drains and the like have a problem in that they are complicated in structure because they are equipped with a component moving mechanism for pressing together the components responsible for water blocking.

In view of the above, the objective of this invention is to provide a water ingress prevention and ventilation device that does not require a member moving mechanism for pressing together the components that are responsible for water blocking.

The water infiltration suppression and ventilation device of the present invention is provided with an air intake surface portion located on the lower side of an exterior wall panel, the air intake surface portion having a plurality of ventilation openings formed at predetermined intervals in the horizontal direction to allow airflow in the vertical direction;
a cover member that is provided on the underside of the air intake surface portion so as to be slidable in the same direction as the horizontal direction, and has open openings that allow airflow to pass in the vertical direction and closed surface portions that do not allow airflow to pass alternately in the sliding direction, and switches between a ventilation state in which the open opening is positioned at the ventilation opening and a closed state in which the closed surface portion is positioned at the ventilation opening,
In the closed state, the cover member is subjected to water pressure from below and is pressed against the air intake surface, thereby preventing water from entering the ventilation opening from the closed surface.

With the above configuration, when water floods or the like occurs, the lid member receives water pressure from below and presses against the air intake surface, eliminating the need for a member movement mechanism to press the air intake surface and the lid member together. This simplifies the structure of the water intrusion suppression ventilation device, thereby reducing costs.

At least the upper surface of the lid member may have an elastic part with sealing properties, and the elastic part may be in close contact with the air intake surface. In this way, by having the elastic part in close contact with the air intake surface, water pressure can be accurately converted into a pressure contact force against the air intake surface of the lid member during flooding.

Alternatively, the lid member may float on water and adhere to the air intake surface. In this way, in the event of a flood, the lid member floats on water and adheres to the air intake surface, so that water pressure can be accurately converted into a pressure contact force of the lid member against the air intake surface.

A chamfered portion may be formed on the lower peripheral edge of the ventilation opening. This prevents the lid member from moving smoothly when sliding due to burring protrusions on the lower peripheral edge of the ventilation opening, or prevents the upper surface of the lid member from being scratched, reducing the sealing performance.

The lid member may be restricted from further sliding at a position where it slides to the closed state. This ensures that the closed state can be obtained by sliding the lid member.

An operating knob may be provided on the underside of the lid member. This allows the lid member to be easily slid by hand.

The present invention eliminates the need for a component movement mechanism to press components together to stop water from entering, simplifying the structure of the water ingress prevention and ventilation device and reducing costs.

FIG. 2 is an explanatory diagram showing a water infiltration suppression and ventilation device according to an embodiment. 2A is a perspective view showing the main body of the water intrusion suppression and ventilation device of FIG. 1, and FIG. 2B is a perspective view showing a cover member of the water intrusion suppression and ventilation device. 4 is an explanatory diagram showing switching from a ventilation state to a closed state in the water intrusion suppression and ventilation device of FIG. 1. 1A is an explanatory diagram showing a modified example of the main body of the water intrusion suppression and ventilation device of FIG. 1, and FIG. 1B is an explanatory diagram showing a modified example of the cover member of the water intrusion suppression and ventilation device. 5 is an explanatory diagram showing switching from a ventilation state by the cover member in FIG. 4 to a closed state for preventing water intrusion, and showing a sliding end position of the cover member. FIG. FIG. 2 is an explanatory diagram showing an arrangement of the water inundation suppression and ventilation device of the embodiment in a house. 1. FIG. 4 is an explanatory diagram showing a modified example of the cover member of the water intrusion suppression and ventilation device of FIG. 1, and showing switching from a ventilation state to a closed state by the cover member. FIG. 8 is a partially enlarged view of FIG. 7 .

The following describes an embodiment of the present invention with reference to the attached drawings. As shown in FIG. 1, the water intrusion suppression and ventilation device 4 of this embodiment is installed below the air intake 20 of a long ventilation slit member 2 attached to the back side of the lower part of the exterior material 11 of the exterior wall panel 1 on the first floor. Note that the water intrusion suppression and ventilation device 4 may be installed without providing the ventilation slit member 2.

The exterior wall panel 1 comprises, for example, a frame material 12, a glass wool board 13 provided on the outdoor side of the frame material 12, the exterior material 11 provided on the outdoor side of the glass wool board 13 via a ventilation layer, and glass wool 14 provided within the frame material 12. The mounting member 6 for mounting the ventilation slit member 2 is fixed to the underside of the frame material 12 with a screw 61.

The mounting member 6 has an open bottom, and a locking claw 62 is formed on its inner wall surface. The steel body of the ventilation slit member 2 also has an open bottom, and an elastic claw 21 that engages with the locking claw 62 is formed on its outer surface. By inserting the body of the ventilation slit member 2 into the mounting member 6 from below, the elastic claw 21 engages with the locking claw 62, and the ventilation slit member 2 is attached to the mounting member 6.

A backup material 51 is provided between the indoor side hanging part 22 of the ventilation slit member 2 and the side of the foundation 5. A slit part for ventilation is formed in the outdoor side hanging part 23 of the ventilation slit member 2, so that ventilation can take place between the ventilation layer of the exterior wall panel 1 and the outside air. In addition, a lower part of the outdoor side hanging part 23 has a hanging part 24 formed at the tip side that extends almost horizontally to the outdoor side.

The water infiltration suppression ventilation device 4 comprises a main body 41 and a cover member 42. The main body 41 and the cover member 42 are made of an aluminum alloy extrusion, a bent steel plate, or a resin molded product. The main body 41 has a generally box-like shape that is long (e.g., 1 to 3 m) in the direction in which the foundation is laid. The main body 41 has an air intake surface 411 on the bottom side, an indoor side rising portion 412 located on the indoor side, an outdoor side rising portion 413 located on the outdoor side, and a guide portion 414 located below the air intake surface 411.

The main body 41 is attached to the underside of the exterior wall panel 1 using the ventilation slit member 2. For example, an engagement recess 412a is formed in the indoor side rising portion 412, and the tip return portion of the indoor side hanging portion 22 is engaged with this engagement recess 412a. In addition, an attachment rising portion 413a is formed on the tip side of the portion extending from the upper end side of the outdoor side rising portion 413 toward the indoor side, and this attachment rising portion 413a is fixed to the hanging point 24 by a fastening member.

Sealing material 15 is applied between the bottom end surface of the exterior material 11 and the mounting riser 413a, and the periphery of the fastening member is sealed by this sealing material 15. In addition, sealing material 52 is applied between the bottom of the indoor side riser 412 and the rising surface of the foundation 5.

As shown in FIG. 2(A), the air intake surface 411 has a plurality of ventilation openings 411a formed at predetermined intervals in the horizontal direction parallel to the wall surface of the exterior material 11, through which air flows in the vertical direction. The ventilation openings 411a are not limited to a rectangular shape, and may be circular.

The lid member 42 is supported by the guide portion 414 on the lower surface side of the air intake surface portion 411 and is provided so as to be slidable in the same direction as the horizontal direction. The thickness of the lid member 42 is approximately the same as the width between the upper surface of the guide portion 414 and the lower surface of the air intake surface portion 411, and the upper surface of the lid member 42 is in close contact with the lower surface of the air intake surface portion 411, and the lower surface of the lid member 42 is in close contact with the upper surface of the guide portion 414. As shown in FIG. 2B, the lid member 42 has open openings 42a that allow airflow to pass in the vertical direction and closed surface portions 42b that do not allow airflow to pass, alternately in the sliding direction. The pitch of the open openings 42a is set equal to the pitch of the ventilation openings 411a. The open openings 42a are not limited to a square shape and may be a circle. In addition, a semicircular or other convex portion may be formed on the upper tip side of the guide portion 414, and this convex portion may be in line contact with the underside of the lid member 42. This can reduce resistance when the lid member 42 slides while ensuring the above-mentioned close contact.

The lid member 42 is slid in the same direction as the horizontal direction to switch between a ventilation state in which the open opening 42a is located at the ventilation opening 411a and a closed state in which the closed surface portion 42b is located at the ventilation opening 411a. In the closed state, the lid member 42 receives water pressure from below and presses against the air intake surface portion 411, preventing water from entering the ventilation opening 411a from the closed surface portion 42b. The open opening 42a is smaller than the ventilation opening 411a, and in the closed state, the ventilation opening 411a is covered by the closed surface portion 42b, which has a larger area than the open opening 42a.

A number of engagement recesses 42c are formed at predetermined positions on the upper surface of the lid member 42, avoiding the open opening 42a. In addition, engagement protrusions 411b are formed on the lower surface of the air intake surface 411, which engage with the engagement recesses 42c at the sliding position where the lid member 42 is in the closed state. In other words, the engagement recesses 42c and the engagement protrusions 411b restrict further sliding of the lid member 42 at the position where the lid member 42 slides to the closed state. The concave-convex relationship between the engagement recesses 42c and the engagement protrusions 411b may be reversed.

In addition, an operating knob 42d is provided on the underside of the lid member 42. This operating knob 42d protrudes downward from the underside of the closing surface portion 42b.

In the above configuration, when the water inundation suppression ventilation device 4 is in the ventilation state, as shown in FIG. 3, outside air is taken in through the ventilation opening 411a of the air intake surface 411 of the water inundation suppression ventilation device 4 and introduced into the ventilation slit member 2 side. On the other hand, when a family member judges that there is a risk of flooding, etc., the family member slides the cover member 42 of the water inundation suppression ventilation device 4 to create a closed state in the water inundation suppression ventilation device 4. In this closed state, the cover member 42 is subjected to water pressure from below by water during a flood, etc., and is pressed against the air intake surface 411, so a member movement mechanism for pressing the air intake surface 411 and the cover member 42 is not required. This simplifies the structure of the water inundation suppression ventilation device 4 and reduces costs.

Providing an operating knob 42d on the underside of the lid member 42 allows the lid member 42 to be easily slid by hand.

When the lid member 42 is slid to a position where it is in the closed state, further sliding of the lid member 42 is restricted, so that the closed state can be reliably obtained by sliding the lid member 42.

The slide restriction means is not limited to the structure of the engagement recess 42c and the engagement protrusion 411b. For example, the air intake surface 411 may have the ventilation opening 411a shown in FIG. 4(A), and the cover member 42 may have the open opening 42a and the protrusion 42e shown in FIG. 4(B).

The open opening 42a adjacent to the protrusion 42e is smaller than the other open openings 42a, and the ventilation opening 411a located at the location corresponding to the protrusion 42e and the adjacent open opening 42a has a size that includes the protrusion 42e and the open opening 42a. For example, during factory production of the water infiltration suppression ventilation device 4, after the cover member 42 is set on the main body 41, a screw member is screwed into the underside of the cover member 42, and the tip side of the screw member protrudes into the air intake surface 411, and this protruding portion can be the protrusion 42e.

As shown in FIG. 5, when the cover member 42 is slid from a ventilated state in which the open opening 42a is located inside the ventilation opening 411a, a closed state in which the open opening 42a is located outside the ventilation opening 411a is formed, and at this time, the protrusion 42e abuts the edge of the ventilation opening 411a. In other words, when the cover member 42 slides to a position in which the closed state is reached, further sliding of the cover member 42 is restricted. When the protrusion 42e is located inside the ventilation opening 411a, it becomes easier for the cover member 42 to come into close contact with the air intake surface 411.

As shown in FIG. 6, multiple water inundation suppression and ventilation devices 4 may be placed around the building 100. The ends of each water inundation suppression and ventilation device 4 are located near the exterior corners 1001 and interior corners 1002 of the building 100, and are sealed to prevent water from entering. If it is not possible to place water inundation suppression and ventilation devices 4 at the exterior corners 1001 and interior corners 1002 of the building 100, fixed covers may be provided on the air intakes at the exterior corners 1001 and interior corners 1002.

Also, as shown in FIG. 7, an elastic portion 421 made of rubber or the like having sealing properties may be provided on the upper surface of the lid member 42, and this elastic portion 421 may be brought into close contact with the air intake surface 411. In this way, the elastic portion 421 comes into close contact with the air intake surface 411, so that water pressure during flooding can be accurately converted into a pressure contact force against the air intake surface 411 of the lid member 42. Note that in order to reduce the sliding resistance of the lid member 42, the elastic portion 421 may be provided only at the closing surface 42b. On the other hand, the elastic portion 421 may be provided on the entire upper and lower surfaces of the lid member 42.

Furthermore, as shown in FIG. 8, a chamfered portion 411c may be formed at the lower peripheral edge corner of the ventilation opening 411a. This prevents the cover member 42 from being moved smoothly due to burring protrusions on the lower peripheral edge of the ventilation opening 411a, or from being scratched on the upper surface of the cover member 42, reducing the sealing performance, when the cover member 42 is slid.

The lid member 42 may have a specific gravity less than water, float on water, and adhere to the air intake surface 411. In this way, the lid member 42 floats on water and adheres to the air intake surface 411 during a flood, so that the water pressure during a flood can be accurately converted into a pressure contact force of the lid member 42 against the air intake surface 411. The material of the lid member 42 itself may have a specific gravity less than water, or may be structured to float on water by having a hollow part in the center, a lightweight foam material part at the bottom, or the like.

Although an embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to the illustrated embodiment. Various modifications and variations can be made to the illustrated embodiment within the same scope as the present invention or within an equivalent scope.

1: Exterior wall panel 2: Ventilation slit member 4: Water ingress suppression ventilation device 5: Foundation 6: Mounting member 11: Exterior material 12: Frame material 13: Glass wool board 14: Glass wool 15: Sealing material 20: Air intake port 21: Elastic claw 22: Indoor side hanging portion 23: Outdoor side hanging portion 24: Hanging point 41: Main body 42: Lid member 42a: Opening opening 42b: Closing surface portion 42c: Engagement recess 42d: Operation knob 42e: Protrusion 51: Backup material 52: Sealing material 61: Screw 62: Engagement claw 100: Building 411: Air intake surface portion 411a: Ventilation opening 411b: Engagement protrusion 411c: Chamfered portion 412: Indoor side rising portion 412a: Engagement recess 413: Outdoor side rising portion 413a : Mounting riser 414 : Guide portion 421 : Elastic portion 1001 : External corner 1002 : Internal corner

Claims (5)

an air intake surface portion located on the lower side of the exterior wall panel, in which a plurality of ventilation openings for passing air in the vertical direction are formed at predetermined intervals in the horizontal direction;
a cover member that is supported by a guide portion on the underside of the air intake surface portion and is slidable in the same direction as the horizontal direction, and has open openings that allow airflow to pass in the vertical direction and closed surface portions that do not allow airflow to pass alternately in the sliding direction, and switches between a ventilation state in which the open opening is positioned at the ventilation opening and a closed state in which the closed surface portion is positioned at the ventilation opening ,
The thickness of the cover member is approximately the same as the width between the upper surface of the guide portion and the lower surface of the air intake surface portion, the upper surface of the cover member is in close contact with the lower surface of the air intake surface portion, and the lower surface of the cover member is in close contact with the upper surface of the guide portion,
A water infiltration suppression and ventilation device characterized in that, in the closed state, the cover member receives water pressure from below and is pressed against the air intake surface portion to suppress water infiltration from the closed surface portion into the ventilation opening. The water ingress suppression and ventilation device according to claim 1, characterized in that at least the upper surface of the lid member has an elastic part with sealing properties, and the elastic part is in close contact with the air intake surface. 3. The water-ingress suppression and ventilation device according to claim 1 or 2 , wherein a chamfer is formed on the lower peripheral edge of the ventilation opening. 4. The water-ingress suppression and ventilation device according to claim 1 , wherein the lid member is regulated from further sliding when the lid member slides to the closed position. 5. The water-ingress suppression and ventilation device according to claim 1 , further comprising an operating knob on the underside of the lid member.

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