JP7779339B2 - Water-stopping structures and devices for buildings - Google Patents

Description

The present invention relates to water-stopping structures and devices for buildings.

Water-stopping structures that block openings in buildings to prevent water from seeping in have been known in the past. Patent Document 1 discloses a water-intrusion prevention device that can be assembled in the passageways of building entrances in emergencies such as heavy rain or flooding, and that prevents water from seeping into the building.

In this technology, the water intrusion prevention device comprises a support member with a U-shaped cross-section and vertical grooves provided on both side walls of a building's passageway; a waterstop panel whose both side ends are pressed against the inner surface of the vertical grooves of the support member to close the building's passageway; a panel support beam member installed on the floor of the passageway to receive the lower end surface of the waterstop panel; a first crimping means for crimping the lower end surface of the waterstop panel onto the panel support beam member; a second crimping means for crimping and fixing the panel support beam member to the floor surface; and a panel fixing means for crimping and fixing both side ends of the waterstop panel against the inner surface of the vertical grooves of the support member.

Japanese Patent Application Laid-Open No. 2018-096114

With the technology described in Patent Document 1, workers must sequentially operate the first crimping means, second crimping means, and panel fixing means, which are located in different positions, to fix the waterstop panel and enable its waterstop function. This poses the problem of poor installation workability, as it is not possible to easily and quickly install the waterstop structure in emergencies such as heavy rain or flooding.

The purpose of the present invention is to provide a water-stopping structure and device for buildings that can be easily and quickly installed in emergencies such as heavy rain or flooding.

The first invention provides a water-stopping structure for a building that prevents water from seeping into the interior of the building through an opening in the wall of the building, and includes a pair of vertical frames extending in the up-down direction and a lower frame extending in the left-right direction and connecting the pair of vertical frames, a frame body attached to the wall so as to surround the opening, a water-stop plate that can be placed on the lower frame and has a shape that can cover at least the lower portion of the opening and a left-right dimension that overlaps the pair of vertical frames in the interior-exterior direction of the building, and a water-stop plate that can be placed on the lower frame on the interior side of the pair of vertical frames. The waterstop mounting mechanism includes a seal portion including a pair of vertical seal portions arranged vertically between the vertical frames and the waterstop, and a lower seal portion arranged horizontally between the lower frame and the waterstop; and a waterstop mounting mechanism that is arranged on the waterstop and has a drive input portion and a biasing mechanism that receives a driving force input to the drive input portion to compress the pair of vertical seal portions between the waterstop and the pair of vertical frames, and biases the waterstop toward the room and downward so as to compress the lower seal portions between the waterstop and the lower frame.

With this configuration, after placing the waterstop on the lower frame of a frame body attached to the wall so as to surround the opening, applying a driving force to the drive input unit causes the biasing mechanism to compress a pair of vertical seals between the waterstop and a pair of vertical frames, while biasing the waterstop toward the room and downwards so as to compress the lower seal between the waterstop and the lower frame. This allows for easy and quick installation of a waterstop structure in emergencies such as heavy rain or flooding.

The second invention is the first invention, wherein the drive input portion of the waterstop mounting mechanism is arranged on the surface of the waterstop facing the interior of the building.

With this configuration, the drive input part is located on the inner surface of the waterstop, allowing workers to input drive force to the drive input part from inside the room, preventing workers from getting wet with rainwater or other sources when installing the waterstop.

A third invention is the first or second invention, wherein the biasing mechanism of the waterstop mounting mechanism has an engagement portion and a moving portion that receives the driving force and moves the engagement portion between an engagement position and a disengagement position, wherein the engagement position is a position where the engagement portion sandwiches the vertical frame and the vertical seal portion from both sides between the engagement portion and the waterstop in the inward/outward direction, and the disengagement position is a position where the engagement portion is separated from the vertical frame.

With this configuration, the driving force input to the drive input portion causes the moving portion to move the engaging portion between the engaged position and the disengaged position. In particular, in the engaged position, the engaging portion sandwiches the vertical frame and vertical seal portion from both sides between the waterstop and the engaging portion in the inward and outward directions, stably compressing the vertical seal portion and achieving watertight performance. Furthermore, in the disengaged position, the engaging portion moves away from the vertical frame, preventing the engaging portion from interfering with the removal of the waterstop.

A fourth invention is the third invention, wherein the engagement portion is supported on the waterstop so as to be rotatable around a central axis, the moving portion receives the driving force and rotates the engagement portion between the engagement position and the disengagement position, and the surface of the engagement portion facing the vertical frame is tapered and inclined from the disengagement position toward the engagement position.

With this configuration, the moving part rotates the engaging part, allowing the engaging part to easily move between the engaged position and the disengaged position. In particular, one surface of the engaging part is tapered toward the engaged position, which gradually increases the force exerted by the engaging part on the waterstop toward the interior of the room, thereby enabling the vertical seal part to exhibit its sealing properties.

The fifth invention is the third invention, wherein the vertical frame has an abutment portion that abuts against the engagement portion at the engagement position, and is capable of moving the waterstop downward by the driving force while preventing upward movement of the engagement portion.

With this configuration, when the engagement portion abuts the abutment portion, the driving force input to the drive input portion can be converted into a force moving the waterstop downward, in other words, a compressive action on the lower seal portion.

In a sixth aspect of the present invention, in any one of the first to fifth aspects, the waterstop mounting mechanism further includes an operating handle that is rotatably supported on the waterstop and is operated to input a rotational driving force to the drive input portion.

With this configuration, the worker can easily input driving force to the drive input section by operating the operating handle, allowing them to install the waterstop.

The seventh invention is any of the first to sixth inventions, wherein the frame body further comprises a lid portion supported on the vertical frame so as to be switchable between an open state and a closed state relative to the vertical frame, the open state being a state in which the waterstop can be placed on the lower frame, and the closed state being a state in which the waterstop cannot be placed on the lower frame, and a locking mechanism capable of locking the waterstop so as to compress the lower seal portion when the lid portion is in the closed state.

With this configuration, the waterstop can be easily attached to the frame by opening and closing the lid, and after the lid is closed, the locking mechanism locks the waterstop into the engagement position of the engagement part, maintaining downward displacement of the waterstop and stably maintaining the sealing performance of the lower seal part.

An eighth invention provides a waterstop device comprising: a frame body including a pair of vertical frames extending in the up-down direction and a lower frame extending in the left-right direction and connecting the pair of vertical frames; a waterstop plate having a left-right dimension that overlaps at least the pair of vertical frames and that can be placed on the lower frame; a sealing portion including a pair of vertical seal portions arranged in the up-down direction between the pair of vertical frames and the waterstop plate, and a lower seal portion arranged in the left-right direction between the lower frame and the waterstop plate; and a waterstop plate mounting mechanism that is disposed on the waterstop plate and has a drive input portion and a biasing mechanism that receives a driving force input to the drive input portion to compress the pair of vertical seal portions between the waterstop plate and the pair of vertical frames, and biases the waterstop plate so as to compress the lower seal portions between the waterstop plate and the lower frame.

With this configuration, a frame is attached to the wall surrounding the building opening, and a waterstop is placed on the lower frame. When a driving force is input to the drive input section, the biasing mechanism compresses the pair of vertical seals between the waterstop and the pair of vertical frames, while biasing the waterstop so that the lower seal is compressed between the waterstop and the lower frame. This allows for easy and quick installation of the waterstop device in emergencies such as heavy rain or flooding.

This invention provides a water-stopping structure and device for buildings that can be easily and quickly installed in emergencies such as heavy rain or flooding.

1 is a vertical cross-sectional view of an opening and a water-stopping structure for a building according to one embodiment of the present invention. 1 is a horizontal cross-sectional view of an opening in a building and a water-stopping structure according to one embodiment of the present invention. 1 is a front view of a waterproof structure for a building according to an embodiment of the present invention, as viewed from the indoor side. 1 is an enlarged horizontal cross-sectional view of a waterproofing structure for a building according to one embodiment of the present invention, showing an engaging portion disposed in a disengaged position. FIG. 1 is an enlarged front view of a waterproof structure for a building according to one embodiment of the present invention, seen from the indoor side, showing an engaging portion disposed in a disengaged position. FIG. FIG. 2 is an enlarged horizontal cross-sectional view of a waterproofing structure for a building according to one embodiment of the present invention, showing an engaging portion disposed in an engaging position. 1 is an enlarged front view of a waterproof structure for a building according to one embodiment of the present invention, seen from the indoor side, showing an engaging portion disposed in an engaging position. FIG. 1 is a front view of a water stopping structure for a building according to one embodiment of the present invention, with the water stop plate removed and the vertical frame cover closed. FIG. FIG. 9 is a front view showing the state in which the waterstop is inserted into the frame body from the state shown in FIG. 8 . 10 is a front view of the state shown in FIG. 9 after the insertion of the waterstop plate has been completed and the lid has been closed. 11 is a front view of the state in which the waterstop is biased downward from the state of FIG. 10. FIG. FIG. 2 is an enlarged front view of the waterproofing structure for a building according to a first modified embodiment of the present invention, seen from the indoor side, showing the engaging portion disposed in the engaging position. 10 is a plan view of the regulating portion and its surroundings in the waterproofing structure for a building according to the first modified embodiment of the present invention, showing the slider separated from the first gear. FIG. FIG. 10 is a front view of the regulating portion and its surroundings in the waterproofing structure for a building according to the first modified embodiment of the present invention, showing the slider separated from the first gear. 10 is a plan view of the regulating portion and its surroundings in the waterproofing structure for a building according to the first modified embodiment of the present invention, showing the slider engaged with the first gear. FIG. FIG. 10 is a front view of the regulating portion and its surroundings in the waterproofing structure for a building according to the first modified embodiment of the present invention, showing the slider engaged with the first gear. FIG. 10 is an enlarged front view of a waterproof structure for a building according to a second modified embodiment of the present invention, seen from the indoor side, showing the engagement portion disposed in the engagement position. FIG. 10 is a perspective view of an operating handle of a waterproof structure for a building according to a second modified embodiment of the present invention. 19A and 19B are enlarged views of the periphery of the engaging protrusion of the operating handle of FIG. 18 .

The following describes a water stopping structure (water stopping device) for a building according to one embodiment of the present invention, with reference to the drawings. Fig. 1 is a vertical cross-sectional view of the building opening H and water stopping structure according to this embodiment. Fig. 2 is a horizontal cross-sectional view of the building opening H and water stopping structure according to this embodiment. Fig. 3 is a front view of the building water stopping structure according to this embodiment, as seen from inside the room. Note that in these and subsequent figures, the interior/exterior directions, left/right directions, and up/down directions of the building are shown as necessary to facilitate explanation, but these directions do not limit the present invention. Of the interior/exterior directions, inward refers to the direction facing the interior of the building, and outward refers to the direction facing the exterior of the building.

The building may be, for example, a wooden house or a steel-framed house. The building may also be a building. In this embodiment, the building will be described as a house. The building includes an exterior wall 10, an interior wall 11, multiple sashes 12, flooring 14, and shutter rails 16.

The exterior wall 10 forms the exterior of the building and extends left-right and up-down in each drawing. The exterior wall 10 forms the wall portion in this embodiment.

The interior wall 11 is positioned inside the exterior wall 10 at a distance. The interior wall 11, together with the exterior wall 10, constitutes the wall portion of this embodiment. The interior wall 11 has an opening H. The opening H connects the outside of the building with the interior of the building. In this embodiment, the opening H has a rectangular shape that extends vertically and horizontally.

The interior wall 11 defines the interior space. The interior wall 11 has a wall body 11A and a window frame 11B. The wall body 11A is a wall arranged parallel to the exterior wall 10. The window frame 11B extends from the wall body 11A toward the outside so as to surround the opening H. Note that while only a portion of the window frame 11B is shown in Figure 2, the window frame 11B is arranged so as to surround the opening H from above, below, left, and right.

The multiple sashes 12 are slidable left and right so that the opening H can be opened and closed. In this embodiment, two sashes 12 are arranged for the opening H.

The flooring 14 is a board arranged to extend horizontally inside the building. The flooring 14 is positioned corresponding to the lower ends of the multiple sashes 12. In other words, in this embodiment, the opening H and the window section formed by the multiple sashes 12 are comprised of a bay window that is connected to the flooring 14. Although not shown in Figure 1, the lower end of the exterior wall 10 is connected to the ground, and as an example, the height of the flooring 14 from the ground is set to between 400 and 600 mm.

As shown in Figure 2, the shutter rails 16 are arranged to protrude from the exterior wall 10 on the left and right outer sides of the sash 12, and extend in the vertical direction. Note that a similar shutter rail 16 is also arranged on the opposite side (right side) of the sash 12 in Figure 2. This pair of shutter rails 16 functions to vertically guide a shutter (not shown) that covers the window section from the outside.

The water-stop structure for a building according to this embodiment functions to prevent water from seeping into the interior of the building through openings H in the building's walls, as described above. The following describes the prevention of water from entering the building at a water level above the floor level in a typical home. The water-stop structure includes a frame 20, a waterstop 30, a seal 40, and an attachment mechanism 50 (waterstop attachment mechanism).

When viewed from outside the building, the frame body 20 is arranged in a U-shape surrounding the periphery of the opening H and is attached to the exterior wall 10. The frame body 20 has a pair of vertical frames 21 on the left and right and a lower frame 22. The pair of vertical frames 21 are fixed to the exterior wall 10 at positions spaced apart on the left and right outside of the opening H, extending in the vertical direction. Note that only the left vertical frame 21 is visible in Figure 2. The lower frame 22 is positioned below the opening H at a distance and is fixed to the exterior wall 10 so that the lower ends of the pair of vertical frames 21 are connected in the horizontal direction. The frame body 20 is made of metal or resin and can be fixed to the exterior wall 10 with fasteners such as bolts and screws. Note that the frame body 20 may be a frame component with another function that is already installed in the building, or a component dedicated to a water-stopping structure (water-stopping device).

As shown in Figure 2, the vertical frame 21 has a vertical frame main body 21A, an outer extension 21B, and a waterstop facing portion 21C. The vertical frame main body 21A is fixed to the outer surface of the exterior wall 10 with screws or the like, and has a rectangular cross section as shown in Figure 2. The outer extension 21B extends outward in the inward-outward direction from the tip of the vertical frame main body 21A. The waterstop facing portion 21C protrudes from the center of the outer extension 21B in the inward-outward direction toward the opening H (right side in Figure 2). As a result, the outer extension 21B and the waterstop facing portion 21C form an L-shaped space that receives the waterstop 30.

The waterstop 30 is a plate material that has a rectangular shape when viewed from the inside and outside. For example, the waterstop 30 is made of an aluminum honeycomb panel or a metal-resin sandwich panel. As shown in Figure 1, the waterstop 30 can be placed on the lower frame 22. The waterstop 30 has a shape that can cover at least the lower portion of the opening H and a left-right dimension that allows it to overlap a pair of vertical frames 21 in the inside and outside directions. When the waterstop 30 is in close contact with the frame 20, it prevents water from entering the building from the outside through the opening H. It is desirable to store the waterstop 30 inside the building except in emergencies such as heavy rain or flooding. Furthermore, as shown in Figure 1, a predetermined water-proofing treatment is applied between the lower frame 22 of the frame 20 and the exterior wall 10.

The seal portion 40 is located between the frame body 20 and the waterstop 30 and functions to prevent the intrusion of water. The seal portion 40 includes a lower seal portion 41 and a pair of vertical seal portions 42. The lower seal portion 41 is disposed in the left-right direction between the lower frame 22 and the waterstop 30. Each of the pair of vertical seal portions 42 is disposed in the up-down direction between the pair of vertical frames 21 and the waterstop 30. In this embodiment, the seal portion 40 is integrated with the waterstop 30. In other embodiments, the seal portion 40 may be pre-installed on the frame body 20. However, to prevent deterioration of the seal portion 40 due to long-term storage, it is desirable for the seal portion 40 to be integrated with the waterstop 30, as described above. Furthermore, using EPDM rubber or hollow resin rubber for the seal portion 40 allows it to perform its waterstop function even at low compression.

As shown in Figure 1, the mounting mechanisms 50 have the function of tightly adhering the waterstop 30 placed on the lower frame 22 to the frame body 20. In this embodiment, four mounting mechanisms 50 are arranged on the inner surface of the waterstop 30 (the surface facing the interior of the building). Specifically, two mounting mechanisms 50 (Figure 3) are arranged vertically side by side on the left side of the waterstop 30, and two more mounting mechanisms 50 (not shown) are arranged vertically side by side on the right side of the waterstop 30.

The attachment mechanism 50 has a drive input gear 51 (drive input portion), an operating handle 52, a moving portion 53 (part of the biasing mechanism), and an engaging portion 55 (part of the biasing mechanism, also known as the crimping portion).

The drive input gear 51 receives a driving force when the operator operates the operating handle 52. In this embodiment, this driving force is a rotational force. The operating handle 52 has a so-called ratchet mechanism and can be rotated upward or downward by the operator. In other words, the operating handle 52 is operated to input a rotational driving force to the drive input gear 51.

The moving portion 53 and the engaging portion 55 function as a biasing mechanism. This biasing mechanism receives the driving force input to the drive input gear 51 and biases the waterstop 30 toward the room and downward, respectively, so as to compress the pair of vertical seal portions 42 between the waterstop 30 and the pair of vertical frames 21, and compress the lower seal portion 41 between the waterstop 30 and the lower frame 22.

Figure 4 is an enlarged horizontal cross-sectional view of the water-stopping structure for a building according to this embodiment, showing the engagement portion 55 in the disengaged position. Figure 5 is an enlarged front view of the water-stopping structure for a building according to this embodiment, seen from the indoor side, showing the engagement portion 55 in the disengaged position. Figure 6 is an enlarged horizontal cross-sectional view of the water-stopping structure for a building according to this embodiment, showing the engagement portion 55 in the engaged position. Figure 7 is an enlarged front view of the water-stopping structure for a building according to this embodiment, seen from the indoor side, showing the engagement portion 55 in the engaged position.

Referring to FIG. 5 , the operating handle 52 is rotatable up and down around the central axis of rotation of the drive input gear 51. It includes a handle body 521 and an engagement gear 522. The handle body 521 is the main body of the operating handle 52, and a grip portion that can be held by an operator is formed on the longitudinal side of the handle body 521 opposite the area that engages with the drive input gear 51. The engagement gear 522 is a fan-shaped gear housed inside the handle body 521. The engagement gear 522 is engageable with a gear formed on the outer periphery of the drive input gear 51. When the operator moves a switching piece (not shown) provided on the handle body 521, the attitude and position of the engagement gear 522 within the handle body 521 are switched. As a result, the rotation direction of the drive input gear 51 switches depending on the rotation direction of the operating handle 52.

The moving part 53 also has a first gear 53A and a second gear 53B.

The first gear 53A is a gear rotatably supported on the waterstop 30 to the left of the drive input gear 51 (the side closer to the vertical frame 21 and vertical seal portion 42). The second gear 53B is a gear rotatably supported on the waterstop 30 to the left of the first gear 53A. The first gear 53A is engaged with the drive input gear 51, and the second gear 53B is engaged with the first gear 53A. As a result, when the drive input gear 51 rotates, the rotational drive force is transmitted to the first gear 53A and the second gear 53B, causing the second gear 53B to rotate. In this way, the provision of the first gear 53A determines the direction of rotation when this mechanism operates. The waterstop 30 can be easily crimped by moving the operating handle 52 downward, which makes it easier for the operator to apply force to it; in other words, by moving it downward, which makes it easier for the operator to apply weight.

In this embodiment, the outer diameter of the first gear 53A is set to be larger than the outer diameter of the drive input gear 51. This outer diameter ratio allows the water stop 30 to be easily installed with a light up and down movement by the operator operating the operating handle 52.

The engagement portion 55 is a fan-shaped member fixed to a portion of the second gear 53B in the circumferential direction (rotational direction). In other words, the engagement portion 55 is supported by the waterstop 30 so as to be rotatable around the central axis of rotation of the second gear 53B.

The engaging portion 55 has a first end 551 and a second end 552. The first end 551 corresponds to one circumferential end of the engaging portion 55. The second end 552 corresponds to the other circumferential end of the engaging portion 55, i.e., the region opposite the first end 551. The thickness of the second end 552 is set to be thicker than the thickness of the first end 551. In other words, the surface of the engaging portion 55 facing the outer extension portion 21B of the vertical frame 21 is tapered from the disengagement position toward the engagement position (Figure 6).

The aforementioned moving portion 53 receives a driving force from the operating handle 52 and can move (rotate) the engaging portion 55 between an engaged position and a disengaged position. The engaged position is a position where the engaging portion 55 sandwiches the outer extension portion 21B and the vertical seal portion 42 of the vertical frame 21 between itself and the waterstop 30 in the inward/outward direction, and the disengaged position is a position where the engaging portion 55 moves away from the outer extension portion 21B to the right.

Furthermore, the waterstop plate 30 has a first pin 61, a second pin 62, and a third pin 63. The vertical frame 21 also has a fourth pin 64 (abutment portion). These pins form part of the waterstop structure according to this embodiment.

The first pin 61 protrudes from the inner surface of the water stop 30 toward the interior of the room. The first pin 61 restricts the upper limit of the rotation range of the operating handle 52. In particular, in this embodiment, the first pin 61 is positioned so as to restrict movement of the operating handle 52 in an area above the height of the water stop 30.

Similarly, the second pin 62 protrudes from the inner surface of the water stop 30 toward the interior of the room. The second pin 62 regulates the lower limit of the rotation range of the operating handle 52. The third pin 63 protrudes from the inner surface of the water stop 30 directly below the first gear 53A. The third pin 63 regulates the right end (disengagement position) of the rotation range of the engagement portion 55. The fourth pin 64 protrudes from the inner surface of the water stop opposing portion 21C toward the interior of the room. The fourth pin 64 regulates the left end (upper end) of the rotation range of the engagement portion 55.

In the building waterproofing structure according to this embodiment, when heavy rain or flooding occurs near the building, a worker prepares the waterstop 30. The worker opens the sash 12 from inside the room to open the opening H, then holds the waterstop 30 and places it on the bottom frame 22 (Figure 1). At this time, the lower seal portion 41 is positioned between the waterstop 30 and the bottom frame 22, and the vertical seal portion 42 is positioned between the waterstop opposing portions 21C of the pair of left and right vertical frames 21 and the waterstop 30. The lower ends of the pair of vertical seal portions 42 are connected to both left and right ends of the lower seal portion 41. At this time, the mounting mechanism 50 is in the state shown in Figures 4 and 5.

Next, the operator rotates the operating handle 52 downward as shown by the arrow in Figure 7. At this time, the rotational force of the operating handle 52 is transmitted to the drive input gear 51, first gear 53A, and second gear 53B, and the engagement portion 55 begins to rotate from the disengaged position toward the engaged position. When the operating handle 52 reaches its lowermost position, the operator rotates the operating handle 52 upward as shown by the arrow in Figure 5. At this time, the engagement gear 522 of the operating handle 52 does not engage with the drive input gear 51, so the drive input gear 51 does not rotate (idle). Then, when the operating handle 52 reaches its uppermost position, the operating handle 52 is rotated downward again, which similarly rotates the engagement portion 55 toward the engaged position.

Eventually, the inclined surface formed on the engaging portion 55 slides against the waterstop opposing portion 21C of the vertical frame 21, causing the engaging portion 55 to rotate upward. As a result, the vertical seal portion 42 is gradually compressed between the waterstop 30 and the waterstop opposing portion 21C (arrow D2 in Figure 2). In other words, the waterstop 30 is pulled toward the room by the engaging portion 55. As a result, the sealing function (water-blocking function) of the vertical seal portion 42 is improved.

Then, when the first end 551 of the engaging portion 55 abuts the fourth pin 64 as shown in Figure 3, the rotation of the engaging portion 55 is restricted. When the operator further rotates the operating handle 52 downward, the rotation of the engaging portion 55 is restricted, and the waterstop 30 itself moves downward due to the driving force input from the operating handle 52 (arrow D3 in Figure 3). As a result, the lower seal portion 41 is compressed between the waterstop 30 and the lower frame 22 (Figure 1), improving the sealing function of the lower seal portion 41.

In this way, the fourth pin 64 abuts against the engagement portion 55 in the engagement position, thereby preventing the engagement portion 55 from moving upward while allowing the driving force to move the water stop plate 30 downward.

By operating the four mounting mechanisms 50 provided on the waterstop 30, the operator can stably attach and secure the waterstop 30 to the frame body 20. When the inclined surface of the engaging portion 55 is engaged with the waterstop opposing portion 21C, the vertical seal portion 42 exerts a repulsive force in the inward and outward directions, preventing the engaging portion 55 from rotating in the opposite direction and from detaching. Furthermore, because the rotation range of the operating handle 52 is limited by the first pin 61 and second pin 62, unintended rotation of the engaging portion 55 after the waterstop 30 has been installed can similarly be prevented (anti-rotation function).

When the worker removes the waterstop 30, he or she first operates a switching piece (not shown) attached to the operating handle 52 to switch the position of the engagement gear 522. Then, when the operating handle 52 is rotated upward as shown by the arrow in Figure 5, the engagement portion 55 moves from the engaged position to the disengaged position in the reverse order of the procedure described above. At this time, the downward rotation of the operating handle 52 results in idling.

In this embodiment, as described above, the engagement portion 55 slides against the waterstop opposing portion 21C when the operating handle 52 is rotated downward. This makes it easier for the operator operating the operating handle 52 to apply downward force, allowing the waterstop 30 to be easily installed.

<Regarding the detachment prevention mechanism of the engagement portion 55>
Next, a description will be given of the detachment prevention mechanism of the engaging portion 55 engaged with the waterstop opposing portion 21C in this embodiment. Fig. 8 is a front view of the waterstop structure for a building according to this embodiment, with the waterstop 30 removed and the lid 211 of the vertical frame 21 closed. Fig. 9 is a front view showing the waterstop 30 being inserted into the frame body 20 from the state shown in Fig. 8. Fig. 10 is a front view showing the waterstop 30 after insertion has been completed and the lid 211 has been closed from the state shown in Fig. 9. Fig. 11 is a front view showing the waterstop 30 being biased downward from the state shown in Fig. 10.

In this embodiment, a mechanism is provided to maintain the attached water stop 30 in a downwardly biased state. Specifically, as shown in FIG. 8, the vertical frame 21 further includes a lid 211 (lid portion), a latch guide 212, a latch 213, a spring 214, and a wire W. The latch guide 212, the latch 213, the spring 214, and the wire W constitute the locking mechanism in this embodiment.

When viewed from the left to right, the lid 211 is positioned above the water stop 30. The lid 211 is rotatable up and down around the lid fulcrum 211S shown in Figure 8. This rotation allows the lid 211 to be switched between the closed state shown in Figure 8 and the open state shown in Figure 9.

The latch guide 212 is fixed to the vertical frame 21 below the lid 211 and guides the latch 213 so that it can slide left and right. The latch 213 is a member that regulates the position of the water stop 30 and is housed within the latch guide 212. The spring 214 is a spring that can expand and contract between the latch 213 and the vertical frame 21, with its base end fixed to the vertical frame 21 and its tip fixed to the latch 213. The wire W is arranged to connect the center of the lid 211 and the latch 213.

When the waterstop 30 is not attached to the vertical frame 21, the lid 211 is closed as shown in Figure 8. On the other hand, when the waterstop 30 is attached to the vertical frame 21, the lid 211 is opened relative to the vertical frame 21 as shown in Figure 9. As a result, the waterstop 30 can be attached to the frame body 20 from above, as shown by the arrow in Figure 9. At this time, the wire W connected to the lid 211 pulls the latch 213, causing the latch 213 to retract from the area where the waterstop 30 passes, and the latch 213 does not interfere with the attachment of the waterstop 30.

As shown in Figure 1, once the waterstop 30 is placed on the lower frame 22, the worker can close the lid 211 as shown in Figure 10. At this time, the latch 213 is biased toward the side of the waterstop 30 by the spring 214. Also, because the worker has not yet operated the attachment mechanism 50, the waterstop 30 is not yet actively biased downward.

Then, as described above, when the worker operates the attachment mechanism 50 and the engaging portion 55 reaches the engaged position, the waterstop 30 is biased downward while compressing the lower seal portion 41. At this time, as shown in FIG. 11 , the waterstop 30 is lowered, and the latch 213 is pushed out by the spring 214, engaging with the upper surface of the waterstop 30. As a result, the engaging portion 55 does not detach from the waterstop opposing portion 21C, and the waterstop 30 does not lift up, preventing a deterioration in the sealing performance of the lower seal portion 41. Note that the position at which the detachment prevention mechanism, exemplified by the latch 213, engages with the waterstop 30 is not limited to the upper surface of the waterstop 30. For example, the latch 213 may engage with a groove (not shown) formed on the side of the waterstop 30.

As described above, in this embodiment, after the waterstop 30 is placed on the lower frame 22 of the frame body 20 attached to the exterior wall 10 so as to surround the opening H, when a driving force is input to the drive input gear 51, the biasing mechanism compresses the pair of vertical seal portions 42 between the waterstop 30 and the pair of vertical frames 21, while biasing the waterstop 30 toward the room and downward so as to compress the lower seal portion 41 between the waterstop 30 and the lower frame 22. This allows for easy and rapid installation of a waterstop structure in emergencies such as heavy rain or flooding. Furthermore, because the worker simply operates the mounting mechanism 50 to position the waterstop 30 in the desired position to ensure its watertight performance, installation is easy not only for adult men, but also for women and the elderly.

In addition, in this embodiment, the mounting mechanism 50 including the drive input gear 51 is positioned on the inner surface of the waterstop 30, allowing the worker to input driving force to the drive input gear 51 from inside the room, preventing the worker from getting wet with rainwater or other water when installing the waterstop 30.

In particular, in this embodiment, the driving force input to the drive input gear 51 causes the moving portion 53 to move the engaging portion 55 between the engaged position and the disengaged position. In particular, in the engaged position, the engaging portion 55 sandwiches the vertical frame 21 and the vertical seal portion 42 from both sides between itself and the waterstop 30 in the inward and outward directions, stably compressing the vertical seal portion 42 and achieving watertight performance. Furthermore, in the disengaged position, the engaging portion 55 moves away from the vertical frame 21, preventing the engaging portion 55 from interfering with the removal of the waterstop 30.

Furthermore, in this embodiment, the moving portion 53 rotates the engaging portion 55, allowing the engaging portion 55 to be easily moved between the engaged position and the disengaged position. In particular, one surface of the engaging portion 55 is tapered toward the engaged position, which gradually increases the force exerted by the engaging portion 55 on the waterstop 30 toward the room, thereby enabling the vertical seal portion 42 to exhibit its sealing properties.

Furthermore, in this embodiment, when the engagement portion 55 abuts the fourth pin 64, the driving force input to the drive input gear 51 can be converted into a force that moves the waterstop 30 downward, in other words, into a compression action on the lower seal portion 41.

In addition, in this embodiment, the attachment mechanism 50 includes an operating handle 52, so that an operator can easily input driving force to the drive input gear 51 by operating the operating handle 52, thereby performing the work of attaching the waterstop 30. Furthermore, compared to when the operating handle 52 is separate from the attachment mechanism 50, there is no need to lose the operating handle 52 or prepare a separate one.

Furthermore, in this embodiment, the waterstop 30 can be easily attached to the frame body 20 by opening and closing the lid 211, and after closing the lid 211, the waterstop 30 is locked in the engagement position of the engagement portion 55 (a position where the lower seal portion 41 can be compressed) using the locking mechanism, thereby maintaining downward displacement of the waterstop 30 and stably maintaining the sealing properties of the lower seal portion 41.

Furthermore, in this embodiment, the frame 20 supporting the waterstop 30 is positioned on the left and right outside of the opening H and below the opening H when viewed from inside the room. In such cases, even if the waterstop 30 can be placed on the lower frame 22, it is difficult for women and elderly people to access the area where the vertical and lower frames 21 and 22 are adjacent to the end of the waterstop 30—in other words, the area where the seal portion 40 is located. However, in this embodiment, the operating handle 52 (drive input gear 51) is exposed within the opening H. Simply by operating this operating handle 52, the engaging portion 55 engages with the waterstop-facing portion 21C of the vertical frame 21 outside the opening H, compressing the lower seal portion 41 and the vertical seal portion 42. This significantly reduces the burden on the worker required to realize the engaging action of this engaging portion 55 (the sealing action of the seal portion 40).

First Modified Embodiment
Fig. 12 is an enlarged front view of the water stopping structure for a building according to a first modified embodiment of the present invention, as seen from the indoor side, showing the engagement portion disposed in the engagement position. Fig. 13 is a plan view of the regulating portion and its surroundings in the water stopping structure for a building according to this modified embodiment, showing the slider separated from the first gear. Fig. 14 is a front view of the regulating portion and its surroundings in the water stopping structure for a building according to this modified embodiment, showing the slider separated from the first gear. Fig. 15 is a plan view of the regulating portion and its surroundings in the water stopping structure for a building according to this modified embodiment, showing the slider engaged with the first gear. Fig. 16 is a front view of the regulating portion and its surroundings in the water stopping structure for a building according to this modified embodiment, showing the slider engaged with the first gear.

As shown in Figure 12, this modified embodiment differs from the previous embodiment in that the attachment mechanism 50 has a restriction portion 70. The following explanation will focus on this difference, and will omit a description of other common features. This also applies to the modified embodiments described below.

The restricting portion 70 is attached to the inner surface of the water stop plate 30. Specifically, the restricting portion 70 is positioned directly below the position where the drive input gear 51 and the first gear 53A engage, facing the outer periphery of the first gear 53A. Note that for the sake of explanation, Figures 13 to 16 show the restricting portion 70 positioned upward.

The restricting portion 70 has a base 71 and a slider 72. The base 71 is fixed to the inner surface of the water stop plate 30. A slot 71H is formed in the base 71. The slider 72 is supported relative to the base 71 so that it can slide radially of the first gear 53A. For this purpose, the slider 72 has a protrusion 72H that is inserted into the slot 71H. The slider 72 also has a lock gear 721 and an operating pin 722. The lock gear 721 is gear teeth formed on the surface of the slider 72 that faces the first gear 53A. The operating pin 722 is operated by an operator to change the position of the slider 72. When an operator holds the operating pin 722 and moves the slider 72 from the position shown in Figures 13 and 14 to the position shown in Figures 15 and 16, the lock gear 721 engages with the first gear 53A. As a result, rotation of the first gear 53A is prevented. Therefore, as in the previous embodiment, when the engaging portion 55 is in the engaged position, the operator can operate the slider 72 to prevent rotation of the first gear 53A, thereby preventing rotation of the second gear 53B and movement of the engaging portion 55 to the disengaged position. This keeps the waterstop 30 biased toward the interior and downward, allowing the waterstop 30 to stably perform its water-blocking function.

Note that a spring (not shown) that biases the slider 72 toward the first gear 53A, or a fixing member that fixes the slider 72 in a position spaced apart from the first gear 53A may also be provided. Furthermore, if the restricting unit 70 is included, the structure of the lid 211 and the locking mechanism of the previous embodiment may not be included. Furthermore, as will be explained below, the operating handle 52 may be detachable, and may not be essential to the watertight structure.

<Second Modified Embodiment>
Fig. 17 is an enlarged front view of a waterproof structure for a building according to a second modified embodiment of the present invention, seen from the indoor side, with the engaging portion disposed in the engaging position. Fig. 18 is a perspective view of an operating handle of the waterproof structure for a building according to this modified embodiment. Fig. 19 is an enlarged view (A) and (B) of the periphery of the engaging protrusion of the operating handle of Fig. 18.

This modified embodiment differs from the previous embodiment in that the mounting mechanism 50 does not have an operating handle 52. That is, the drive input gear 51 and moving part 53 are pre-attached to the inner surface of the waterstop 30. The operator simply prepares an operating handle 52M, as shown in Figures 18 and 19, separately. As an example, the operating handle 52M is a commercially available ratchet handle.

In this modified embodiment, an engagement hole 51H exposed toward the interior of the room is located in the center of the drive input gear 51.

On the other hand, as shown in Figures 19(A) and (B), an engagement protrusion 525 that can engage with the engagement hole 51H is located at the tip of the operating handle 52M. As an example, this structure has a rectangular shape, and can transmit the rotation of the operating handle 52M as rotation of the drive input gear 51.

The operating handle 52M also houses a rotary gear 526 that rotates integrally with the engagement protrusion 525, and an engagement gear 527 that allows or prevents rotation of the rotary gear 526. The engagement gear 527 has the same structure as the engagement gear 522 of the previous embodiment, and can be switched between Figures 9(A) and 9(B) by operating the switching piece 52N in Figure 18.

Therefore, in this modified embodiment, the operator prepares the operating handle 52M, engages the operating handle 52M with the drive input gear 51, and, as in the previous embodiment, rotates the engagement portion 55 to urge the waterstop 30 toward the room and downward. Furthermore, because multiple locations can be operated with a single operating handle 52M, there is no need to attach multiple operating handles 52 to the waterstop 30 in advance, which reduces the weight of the waterstop 30.

As explained in this modified embodiment, the water stop 30 does not necessarily have to be equipped with an operating handle 52. In this case, the structure including the lid 211 and latch 213, as well as the structure of the restricting portion 70, as described above, can prevent the engaging portion 55 from detaching and the water stop 30 from floating up.

The above embodiments can be combined with each other. The water-stopping device can have some or all of the features of the water-stopping structure.

The above describes the watertight structures and watertight devices for buildings according to each embodiment of the present invention, but the present invention is not limited to these and can adopt modified embodiments such as the following:

(1) In the previous explanation, the engaging portion 55 rotates when moving between the engaged position and the disengaged position, but the engaging portion 55 may also slide left and right.

(2) In the above embodiments, the lower frame 22 is described as being positioned at a predetermined height from the ground, but the lower frame 22 may also be installed on the ground. Furthermore, the water-stopping structure of the present invention is not limited to residential buildings and may be applied to other buildings. Furthermore, the mounting mechanism 50 is not limited to being accessible from the inside of the room. Even if it is not accessible, connecting the operating handle 52 and the engagement portion 55 via a gear or pulley (not shown) makes it possible to apply the mechanism to a sliding door such as an automatic door and install the waterstop 30 from the inside. Furthermore, all or part of the mounting mechanism 50 may be located on the outer surface of the waterstop 30.

The first aspect of the present invention provides a water-stopping structure for a building that prevents water from seeping into the interior of a room through an opening in a wall of the building, and includes a pair of vertical frames extending in the up-down direction and a lower frame extending in the left-right direction and connecting the pair of vertical frames, and a frame body attached to the wall so as to surround the opening; a water-stop plate that can be placed on the lower frame and has a shape that can cover at least the lower portion of the opening and a left-right dimension that overlaps the pair of vertical frames in the inside-outside direction of the building; and The waterstop mounting mechanism includes a seal section including a pair of vertical seal sections arranged vertically between a pair of vertical frames and the waterstop, and a lower seal section arranged horizontally between the lower frame and the waterstop; and a waterstop mounting mechanism that is arranged on the waterstop and has a drive input section and a biasing mechanism that receives a driving force input to the drive input section to compress the pair of vertical seal sections between the waterstop and the pair of vertical frames, and biases the waterstop toward the room and downward so as to compress the lower seal sections between the waterstop and the lower frame.

The second invention is the first invention, wherein the drive input portion of the waterstop mounting mechanism is arranged on the surface of the waterstop facing the interior of the building.

A third invention is the first or second invention, wherein the biasing mechanism of the waterstop mounting mechanism has an engagement portion and a moving portion that receives the driving force and moves the engagement portion between an engagement position and a disengagement position, wherein the engagement position is a position where the engagement portion sandwiches the vertical frame and the vertical seal portion from both sides between the engagement portion and the waterstop in the inward/outward direction, and the disengagement position is a position where the engagement portion is separated from the vertical frame.

A fourth invention is the third invention, wherein the engagement portion is supported on the waterstop so as to be rotatable around a central axis, the moving portion receives the driving force and rotates the engagement portion between the engagement position and the disengagement position, and the surface of the engagement portion facing the vertical frame is tapered and inclined from the disengagement position toward the engagement position.

The fifth invention is the third invention, wherein the vertical frame has an abutment portion that abuts against the engagement portion at the engagement position, and is capable of moving the waterstop downward by the driving force while preventing upward movement of the engagement portion.

In a sixth aspect of the present invention, in any one of the first to fifth aspects, the waterstop mounting mechanism further includes an operating handle that is rotatably supported on the waterstop and is operated to input a rotational driving force to the drive input portion.

The seventh invention is any of the first to sixth inventions, wherein the frame body further comprises a lid portion supported on the vertical frame so as to be switchable between an open state and a closed state relative to the vertical frame, the open state being a state in which the waterstop can be placed on the lower frame, and the closed state being a state in which the waterstop cannot be placed on the lower frame, and a locking mechanism capable of locking the waterstop so as to compress the lower seal portion when the lid portion is in the closed state.

An eighth invention provides a waterstop device comprising: a frame body including a pair of vertical frames extending in the up-down direction and a lower frame extending in the left-right direction and connecting the pair of vertical frames; a waterstop plate having a left-right dimension that overlaps at least the pair of vertical frames and that can be placed on the lower frame; a sealing portion including a pair of vertical seal portions arranged in the up-down direction between the pair of vertical frames and the waterstop plate, and a lower seal portion arranged in the left-right direction between the lower frame and the waterstop plate; and a waterstop plate mounting mechanism that is disposed on the waterstop plate and has a drive input portion and a biasing mechanism that receives a driving force input to the drive input portion to compress the pair of vertical seal portions between the waterstop plate and the pair of vertical frames, and biases the waterstop plate so as to compress the lower seal portions between the waterstop plate and the lower frame.

10 Exterior wall 11 Interior wall 11A Wall body 11B Window frame 12 Sash 14 Floor material 16 Shutter rail 20 Frame body 21 Vertical frame 21A Vertical frame body portion 21B Outer extension portion 21C Water stop plate opposing portion 211 Lid (lid portion)
211S Lid fulcrum portion 212 Latch guide 213 Latch (lock mechanism)
214 Spring 22 Lower frame 30 Waterstop 40 Seal portion 41 Lower seal portion 42 Vertical seal portion 50 Mounting mechanism (waterstop mounting mechanism)
51 Drive input gear (drive input portion)
51H Engagement holes 52, 52M Operation handle 521 Handle body 522 Engagement gear 525 Engagement protrusion 526 Rotation gear 527 Engagement gear 53 Moving part (biasing mechanism)
53A First gear 53B Second gear 55 Engagement portion (biasing mechanism)
551 First end 552 Second end 61 First pin 62 Second pin 63 Third pin 64 Fourth pin (contact portion)
70 Restriction portion 71 Base 71H Elongated hole 72 Slider 721 Lock gear 722 Operation pin 722
H Opening H
W Wire W

Claims (8)

A waterproof structure for a building that prevents water from entering the room through an opening in a wall of the building,
a frame body attached to the wall portion so as to surround the opening, the frame body including a pair of vertical frames extending in the up-down direction and a lower frame extending in the left-right direction and connecting the pair of vertical frames;
A water stop plate that can be placed on the lower frame and has a shape that can cover at least the lower portion of the opening and a left-right dimension that overlaps the pair of vertical frames in the inside-outside direction of the building,
A sealing section including a pair of vertical sealing sections arranged along the up-down direction between the pair of vertical frames and the water stop plate on the indoor side of the pair of vertical frames, and a lower sealing section arranged along the left-right direction between the lower frame and the water stop plate;
a waterstop mounting mechanism including: a drive input gear disposed on the waterstop and rotatably supported on the waterstop ; and a biasing mechanism that receives a rotational driving force input to the drive input gear to compress the pair of vertical seal portions between the waterstop and the pair of vertical frames, and that biases the waterstop toward the room and downward so as to compress the lower seal portion between the waterstop and the lower frame;
Equipped with
The biasing mechanism includes:
An engagement portion;
A water-stopping structure for a building, comprising: a movable part having a gear with an outer diameter larger than the outer diameter of the drive input gear, and which receives the rotational driving force from the drive input gear and rotates relative to the waterstop, thereby moving the engaging part between an engaged position and a disengaged position, wherein the engaged position is a position where the engaging part sandwiches the vertical frame and the vertical seal part from both sides between the engaging part and the waterstop in the inward/outward direction, and the disengaged position is a position where the engaging part is separated from the vertical frame . The waterproof structure for a building according to claim 1,
A water stop structure for a building, wherein the drive input gear of the water stop mounting mechanism is arranged on a surface of the water stop facing the interior of the building. The waterproof structure for a building according to claim 1 ,
The engaging portion is supported by the waterstop plate so as to be rotatable about a central axis,
the moving portion receives the rotational drive force and rotates the engaging portion between the engaging position and the disengaging position,
A waterproof structure for a building, wherein the surface of the engaging portion facing the vertical frame is tapered from the disengaged position toward the engaged position. The waterproof structure for a building according to claim 1 ,
A water-stopping structure for a building, wherein the vertical frame has an abutment portion that abuts the engagement portion at the engagement position, and the abutment portion is capable of moving the waterstop downward by the rotational driving force while preventing the engagement portion from moving upward. The waterproof structure for a building according to claim 1,
The waterstop structure for a building, wherein the waterstop mounting mechanism is rotatably supported on the waterstop and further has an operating handle that receives operation for inputting the rotational driving force to the drive input gear . The waterproof structure for a building according to claim 1,
The frame body is
A lid portion supported on the vertical frame so as to be switchable between an open state and a closed state relative to the vertical frame, the open state being a state that allows the waterstop to be placed on the lower frame, and the closed state being a state that prevents the waterstop from being placed on the lower frame;
a locking mechanism capable of locking the waterstop so as to compress the lower seal portion when the lid portion is closed;
The waterproof structure of the building further comprises: A waterproof structure for a building that prevents water from entering the room through an opening in a wall of the building,
a frame body attached to the wall portion so as to surround the opening, the frame body including a pair of vertical frames extending in the up-down direction and a lower frame extending in the left-right direction and connecting the pair of vertical frames;
A water stop plate that can be placed on the lower frame and has a shape that can cover at least the lower portion of the opening and a left-right dimension that overlaps the pair of vertical frames in the inside-outside direction of the building,
A sealing section including a pair of vertical sealing sections arranged along the up-down direction between the pair of vertical frames and the water stop plate on the indoor side of the pair of vertical frames, and a lower sealing section arranged along the left-right direction between the lower frame and the water stop plate;
a waterstop mounting mechanism that is disposed on the waterstop and has a drive input portion and a biasing mechanism that receives a drive force input to the drive input portion to compress the pair of vertical seal portions between the waterstop and the pair of vertical frames, and that biases the waterstop toward the room and downward so as to compress the lower seal portion between the waterstop and the lower frame;
Equipped with
The biasing mechanism of the waterstop mounting mechanism is
an engaging portion supported on the waterstop plate so as to be rotatable about a central axis;
a moving unit that receives the driving force and can rotate the engaging unit between an engaging position and a disengaging position, the engaging position being a position where the engaging unit sandwiches the vertical frame and the vertical seal unit from both sides between the engaging unit and the waterstop in the inward/outward direction, and the disengaging position being a position where the engaging unit is separated from the vertical frame,
A waterproof structure for a building, wherein the surface of the engaging portion facing the vertical frame is tapered from the disengaged position toward the engaged position. a frame body including a pair of vertical frames extending in the up-down direction and a lower frame extending in the left-right direction and connecting the pair of vertical frames;
A water stop plate that has a left-right dimension that overlaps at least the pair of vertical frames in a predetermined direction that intersects each of the vertical and left-right directions and can be placed on the lower frame;
A sealing section including a pair of vertical sealing sections arranged along the up-down direction between the pair of vertical frames and the waterstop, and a lower sealing section arranged along the left-right direction between the lower frame and the waterstop;
a waterstop mounting mechanism including: a drive input gear disposed on the waterstop and rotatably supported on the waterstop ; and a biasing mechanism that receives a rotational driving force input to the drive input gear to compress the pair of vertical seal portions between the waterstop and the pair of vertical frames, and biases the waterstop so as to compress the lower seal portion between the waterstop and the lower frame;
Equipped with
The biasing mechanism includes:
An engagement portion;
A water stopping device comprising: a moving part having a gear with an outer diameter larger than the outer diameter of the drive input gear, and which receives the rotational driving force from the drive input gear and rotates relative to the water stop plate, thereby moving the engaging part between an engaged position and a disengaged position, wherein the engaging position is a position where the engaging part sandwiches the vertical frame and the vertical seal part from both sides between the engaging part and the water stop plate in the specified direction, and the disengaged position is a position where the engaging part is separated from the vertical frame .