Flood prevention structure in a building

Abstract

To provide a flood prevention structure for a building capable of preventing water which has penetrated an earth floor space from a doorway of the building from penetrating the earth floor side.SOLUTION: A vertical handrail bar 31 extending in a vertical direction is arranged adjacent to a wall near a boundary part 25 of an entrance earth space 15 and an entrance hall 16 in a building 10. The vertical handrail bar 31 is supported on an upper support part 33 and a lower support part rotatably in a circumferential direction. On the vertical handrail bar 31, flood prevention sheet 41 is wound. The flood prevention sheet 41 is developed by being pulled out from the vertical rail bar 31 along the boundary part 25 through rotation of the vertical rail bar 31. In a developed state, the flood prevention sheet 41 is placed along the boundary part 25 in a state it extends upward further than a floor surface 16a of the entrance hall 16.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a flood prevention structure in a building.

Background Art

[0002] In recent years, flooding of buildings has frequently occurred due to river breaches and the like associated with heavy rainstorms. For example, Patent Document 1 proposes a technique for preventing such flooding into a building. In the technique of Patent Document 1, an entrance such as a doorway provided in a building is covered from the outdoor side with a flood prevention sheet material to prevent flooding into the building through the entrance.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, even if the technique of Patent Document 1 is adopted, depending on the flood situation outdoors and other factors, it is assumed that water may enter the building from the entrance. Here, for example, when water enters the entrance earthen floor from the doorway of a building, there is a risk that the water may penetrate from the entrance earthen floor to the floor space side such as the entrance hall or living room. It is assumed that such flooding to the floor space side progresses relatively quickly, and in that case, there is a risk of large-scale floor flooding.

[0005] The present invention has been made in view of the above circumstances, and a main object thereof is to provide a flood prevention structure in a building that can quickly prevent water from entering the entrance earthen floor space from entering the floor space side when water enters the building.

Means for Solving the Problems

[0006] In order to solve the above problems, the flood prevention structure in the building of the first invention is applied to a building including an earth floor space that is continuous with a building entrance and has a floor surface formed by an earth floor, and a floor space that is continuous with the earth floor space and has a floor surface at a position higher than the earth floor. The flood prevention structure includes a plate-like or sheet-like flood prevention means disposed near the wall at the boundary between the earth floor space and the floor space or superimposed on a floor step formed at the boundary. The flood prevention means is capable of transitioning to a flood prevention state in which it is disposed along the boundary in a state extending above the floor surface of the floor space in order to prevent flooding from the earth floor space side to the floor space side.

[0007] According to the first invention, the plate-like or sheet-like flood prevention means is disposed near the wall at the boundary between the earth floor space and the floor space or superimposed on a floor step formed at the boundary. In this case, the flood prevention means can be disposed near the boundary between the earth floor space and the floor space so as not to obstruct the movement of the user. Further, the flood prevention means is capable of transitioning to a flood prevention state in which it is disposed along the boundary in a state extending above the floor surface of the floor space. And the water intrusion from the earth floor space side to the floor space side is prevented by the flood prevention means in the transitioned state. Thereby, when water enters the earth floor space through the building opening, it is possible to quickly prevent the water from infiltrating to the floor space side.

[0008] In the flood prevention structure in the building of the second invention, in the first invention, a rod-shaped member extending in the vertical direction is provided near the wall at the boundary, the flood prevention means is a flood prevention sheet wound around the rod-shaped member, the rod-shaped member is rotatable in the circumferential direction, and the flood prevention sheet transitions to the flood prevention state by being pulled out from the rod-shaped member along the boundary by the rotation of the rod-shaped member.

[0009] According to the second invention, the water immersion prevention sheet is wound around a rod-shaped member provided along the wall. The rod-shaped member is rotatable, and by rotating it, the water immersion prevention sheet can be pulled out from the rod-shaped member and shifted to a water immersion prevention state. In this case, since the water immersion prevention sheet can be quickly shifted to the water immersion prevention state, water immersion prevention on the floor space side can be rapidly achieved.

[0010] In the building water immersion prevention structure of the third invention, in the second invention, the rod-shaped member is a vertical handrail rod used as a handrail, and includes support means for rotatably supporting the vertical handrail rod, rotation restricting means for restricting the rotation of the vertical handrail rod, and release means for releasing the rotation restriction by the rotation restricting means.

[0011] According to the third invention, the water immersion prevention sheet is wound around a vertical handrail rod provided along the wall. The vertical handrail rod is rotatably supported by support means, while its rotation is restricted by rotation restricting means. Thereby, during normal times, by restricting the rotation of the vertical handrail rod, the vertical handrail rod can be suitably used as a handrail. Also, when a flood occurs, by releasing the rotation restriction of the vertical handrail rod by the release means, the water immersion prevention sheet can be pulled out from the vertical handrail rod and shifted to a water immersion prevention state. Thereby, while suitably using the vertical handrail rod as a handrail, water immersion prevention by the water immersion prevention sheet can be suitably achieved.

[0012] In the building water immersion prevention structure of the fourth invention, in the third invention, the rotation restricting means is a rotation restricting member arranged at the middle part of the vertical handrail rod and attached to the wall near the boundary part. The rotation restricting member restricts the rotation of the vertical handrail rod by coming into contact with the vertical handrail rod. The release means is removal means for making the rotation restricting member removable from the wall or moving means for making the rotation restricting member movable to a position separated from the vertical handrail rod. The water immersion prevention sheet is wound around a part of the vertical handrail rod below the rotation restricting member.

[0013] According to the fourth invention, a rotation restricting member is arranged at the middle part of the vertical handrail, and the rotation restricting member is attached to the wall. The rotation restricting member restricts the rotation of the vertical handrail by coming into contact with the vertical handrail. Further, the rotation restricting member is removable from the wall or movable to a position separated from the vertical handrail, and by removing or moving it, the rotation restriction of the vertical handrail can be released. In this case, it can be said that the method of releasing the rotation restriction of the vertical handrail is easy to understand and is a suitable configuration for quickly shifting the water immersion prevention sheet to the water immersion prevention state.

[0014] Also, the water immersion prevention sheet is wound around a portion of the vertical handrail below the rotation restricting member. The lower portion of the vertical handrail close to the floor surface is considered to be a portion that is not used so much when used as a handrail. Therefore, according to such a configuration, it is possible to use the vertical handrail for winding the water immersion prevention sheet while suppressing the deterioration of the usability as a handrail. Further, since the rotation restricting member is arranged at the middle part of the vertical handrail, it is possible to clarify the portion above the rotation restricting member in the vertical handrail, that is, the portion that is grasped when using the vertical handrail as a handrail, and in this regard, it can also be said that it is a suitable configuration.

[0015] In the building water immersion prevention structure of the fifth invention, in the first invention, the water immersion prevention means is a water immersion prevention device configured to include a plurality of wall-like panel bodies erected on the floor surface, and the water immersion prevention device is arranged at the wall edge near the boundary portion in a state where the plurality of panel bodies are stacked. Among the plurality of panel bodies, the panel bodies that overlap each other are connected so as to be relatively movable in the width direction, and by the relative movement of the panel bodies, the plurality of panel bodies are expanded in the width direction and arranged along the boundary portion, so that the water immersion prevention device shifts to the water immersion prevention state.

[0016] According to the fifth invention, a flood prevention device having a plurality of wall-like panel bodies is provided, and the flood prevention device is arranged near the boundary between the earthen floor space and the floor space with the plurality of panel bodies overlapped with each other. Thereby, the flood prevention device having a plurality of panel bodies can be arranged in a compact state without obstructing the movement of the user.

[0017] Further, since the panel bodies overlapping each other are connected so as to be relatively movable in the width direction, when one panel body is pulled in the width direction, the other panel bodies are pulled in the width direction following it. Thereby, each panel body can be easily deployed in the width direction and arranged along the boundary between the earthen floor space and the floor space, and thereby, the flood prevention device can be quickly shifted to the flood prevention state.

[0018] In the flood prevention structure of the building of the sixth invention, in the fifth invention, a bench is installed near the wall at the boundary portion, and the bench has a seat plate on which a user sits and support legs that support the seat plate from below, and the flood prevention device is accommodated in the space below the seat plate with the plurality of panel bodies overlapped with each other.

[0019] A bench may be installed near the wall at the boundary between the earthen floor space and the floor space so that the elderly or the like can sit and put on or take off their shoes. Therefore, in the sixth invention, the flood prevention device is accommodated in the space below the seat plate of this bench. In this case, it is possible to arrange the flood prevention device in a state where it is not conspicuous by using the existing bench.

[0020] In the flood prevention structure of the building according to the seventh invention, in the fifth or sixth invention, the support leg is a support plate having a plate shape, and the lateral width direction thereof is arranged in the direction in which the boundary portion extends. The flood prevention device is accommodated in the lower space with the plurality of panel bodies overlapping the support plate. When the plurality of panel bodies are pulled out from the lower space and deployed in the width direction, the flood prevention device shifts to the flood prevention state. In the flood prevention state, the plurality of panel bodies and the support plate are arranged continuously along the boundary portion.

[0021] According to the seventh invention, with the plurality of panel bodies overlapping the support plate of the bench, the flood prevention device is accommodated in the lower space of the seat plate. Further, when the plurality of panel bodies are pulled out and deployed from the lower space of the seat plate, the flood prevention device shifts to the flood prevention state. In the flood prevention state, the plurality of panel bodies and the support plate are arranged continuously along the boundary portion. In this case, by using the support plate of the bench, a continuous flood prevention structure formed by the support plate and each panel body can be constructed.

[0022] In the flood prevention structure of the building according to the eighth invention, in the first invention, a frame portion extending along the boundary portion is provided at the floor step portion. The flood prevention means is a flood prevention plate extending in the longitudinal direction of the frame portion and disposed overlapping the front surface of the frame portion. The flood prevention plate is movable upward from the front surface of the frame portion, and shifts to the flood prevention state by moving upward.

[0023] According to the eighth invention, it is possible to shift to the flood prevention state by moving upward the flood prevention plate disposed overlapping the front surface of the frame portion. In this case, since the flood prevention plate can be quickly shifted to the flood prevention state, it is possible to quickly prevent flooding to the floor space side.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0025] 〔First Embodiment〕 Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. Note that Fig. 1 is a plan view showing the area around the entrance, where (a) shows the state where the flood prevention sheet is not deployed, and (b) shows the state where the flood prevention sheet is deployed.

[0026] As shown in Fig. 1(a), a building 10 such as a house is provided with an entrance 11, and an entrance opening 12 is provided in the entrance 11. The entrance opening 12 communicates the outdoors with the entrance 11, and it is possible to enter and exit from the outdoors to the entrance 11 through this entrance opening 12. Further, an entrance door 13 is provided at the entrance opening 12, and the entrance opening 12 is opened and closed by the entrance door 13. Note that the entrance opening 12 corresponds to a building opening.

[0027] The entrance 11 has an entrance dirt floor space 15 continuous with the entrance opening 12 and an entrance hall 16 continuous with the entrance dirt floor space 15. The floor surface 15a of the entrance dirt floor space 15 is formed by a dirt floor 17. Also, the entrance hall 16 is located on the side opposite to the entrance opening 12 with the entrance dirt floor space 15 in between. The floor surface 16a of the entrance hall 16 is at a position higher than the floor surface 15a of the entrance dirt floor space 15. Note that the entrance dirt floor space 15 corresponds to a dirt floor space. Also, the entrance hall 16 can be called a dirt floor adjacent space adjacent to the entrance dirt floor space 15.

[0028] The step portion between the floor surface 15a of the entrance dirt floor space 15 and the floor surface 16a of the entrance hall 16 is a floor step portion 18. A door frame 19 (rising door frame) is provided at the floor step portion 18. The door frame 19 is formed of a wooden square timber and extends along the boundary portion 25 between the entrance dirt floor space 15 and the entrance hall 16.

[0029] Partition walls 21 and 22 are provided on both sides sandwiching the entrance 11. These partition walls 21 and 22 extend across the entrance dirt floor space 15 and the entrance hall 16 and face each other. Among the partition walls 21 and 22, the partition wall 21 is an outer wall portion that partitions the entrance 11 from the outdoors, and the partition wall 22 is an intermediate partition wall portion that partitions the entrance 11 from the living room 23.

[0030] In the building 10, a plurality of indoor spaces such as a living room 23, a bedroom, and a corridor are provided on the inner side of the building with respect to the entrance hall 16. These indoor spaces, together with the entrance hall 16, constitute a "space above the floor" whose floor surface is higher than the floor surface 15a of the entrance dirt floor space 15.

[0031] Here, in the building 10 of the present embodiment, when water enters the entrance dirt space 15 from the entrance 12 during a flood, a flood prevention structure is provided to prevent the water from entering from the entrance dirt space 15 to the entrance hall 16 side. Hereinafter, in addition to FIG. 1, the flood prevention structure will be described with reference to FIGS. 2 to 4. FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1(a). FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2 in (a) and a cross-sectional view taken along line C-C of FIG. 2 in (b). FIG. 4 is a cross-sectional view taken along line D-D of FIG. 1(b).

[0032] As shown in FIGS. 1(a) and 2, in the entrance 11, a vertical handrail rod 31 extending vertically along the edge of the partition wall 21 is provided. The vertical handrail rod 31 is used as a handrail when moving in the entrance 11 or the like. The vertical handrail rod 31 is disposed near the boundary portion 25 between the entrance dirt space 15 and the entrance hall 16, and more specifically, is disposed on the entrance hall 16 side near the boundary portion 25. Note that the vertical handrail rod 31 corresponds to the "rod-shaped member".

[0033] The vertical handrail rod 31 is formed in a round bar shape and is provided in a state of extending upward from the floor portion of the entrance hall 16. The lower end side of the vertical handrail rod 31 enters the floor portion of the entrance hall 16. Below the floor of the entrance hall 16, a lower support portion 32 for supporting the lower end portion of the vertical handrail rod 31 is provided. An insertion hole 32a into which the lower end portion of the vertical handrail rod 31 is inserted is formed in the lower support portion 32. On the other hand, an upper support portion 33 for supporting the upper end portion of the vertical handrail rod 31 is provided on the partition wall 21. An insertion hole 33a into which the upper end portion of the vertical handrail rod 31 is inserted is formed in the upper support portion 33.

[0034] The lower end portion of the vertical handrail rod 31 is inserted into the insertion hole 32a of the lower support portion 32, and the upper end portion thereof is inserted into the insertion hole 33a of the upper support portion 33, and in the inserted state, it is supported by both support portions 32 and 33. Specifically, the vertical handrail rod 31 is rotatable in the circumferential direction in such a supported state, in other words, it is rotatable about its axis. Note that the "support means" is constituted by each of the support portions 32 and 33.

[0035] As shown in FIGS. 2 and 3(a), a regulating member 35 for regulating the rotation of the vertical handrail 31 is provided at an intermediate portion in the longitudinal direction of the vertical handrail 31. The regulating member 35 is disposed below the central portion in the longitudinal direction of the vertical handrail 31. The regulating member 35 is interposed between the partition wall 21 and the vertical handrail 31 and is attached to the partition wall 21. Here, the regulating member 35 corresponds to the "rotation regulating member", and the partition wall 21 corresponds to the "wall".

[0036] The regulating member 35 has a contact surface 35a that contacts the vertical handrail 31. The contact surface 35a is a plane parallel to the wall surface of the partition wall 21. On the other hand, a planar contact surface 31a against which the contact surface 35a of the regulating member 35 contacts is formed on the vertical handrail 31. The contact surface 35a of the regulating member 35 is in surface contact with the contact surface 31a. Thereby, the vertical handrail 31 is in a state where its rotation is regulated by the regulating member 35 while being rotatably supported by the respective support portions 32 and 33.

[0037] The regulating member 35 has a pair of flange portions 36 that are disposed overlapping the partition wall 21. Insertion holes 38 through which screws 37 can be inserted are formed in these flange portions 36. Screws 37 are inserted into these insertion holes 38 respectively, and the inserted screws 37 are screwed into the partition wall 21. Thereby, the regulating member 35 is attached to the partition wall 21. Specifically, the screw 37 can be removed from the partition wall 21, and thereby, the regulating member 35 can be removed from the partition wall 21 by removing the screw 37. Therefore, the screw 37 corresponds to the "removing means" for making the regulating member 35 removable from the partition wall 21. Further, when the regulating member 35 is removed from the partition wall 21, the rotation regulation of the vertical handrail 31 by the regulating member 35 is released. Therefore, the screw 37 also corresponds to the "releasing means" for releasing the rotation regulation of the vertical handrail 31.

[0038] As shown in FIGS. 2 and 3(b), a water immersion prevention sheet 41 as a water immersion prevention means is wound around the vertical handrail 31. The water immersion prevention sheet 41 is a sheet for preventing water immersion from the entrance earthen space 15 to the entrance hall 16 side, and is made of a resin sheet material having waterproof properties. In FIGS. 2 and 4, for the sake of convenience, the water immersion prevention sheet 41 is shown with dot hatching.

[0039] The water immersion prevention sheet 41 is wound around a portion of the vertical handrail 31 below the regulating member 35. In the wound state of the water immersion prevention sheet 41, the lower end of the water immersion prevention sheet 41 is located at substantially the same height as the floor surface 16a of the entrance hall 16, and the upper end of the water immersion prevention sheet 41 is located at a height lower than the regulating member 35. Also, one end in the winding direction of the water immersion prevention sheet 41, which is the sheet base end portion, is fixed to the vertical handrail 31. Specifically, the entire area of the sheet base end portion in the vertical direction is fixed to the vertical handrail 31, thereby ensuring watertightness between the vertical handrail 31 in the entire area in the vertical direction.

[0040] When the regulating member 35 is removed from the partition wall 21, as described above, the rotation regulation of the vertical handrail 31 is released. In this released state, the vertical handrail 31 can rotate in the circumferential direction. In this case, as shown in FIGS. 1(b) and 4, by rotating the vertical handrail 31, it becomes possible to pull out and deploy the water immersion prevention sheet 41 from the vertical handrail 31. In the state where the water immersion prevention sheet 41 is deployed, the water immersion prevention sheet 41 extends upward from the floor surface 16a of the entrance hall 16 and is arranged along the boundary portion 25 between the entrance earthen space 15 and the entrance hall 16. Hereinafter, the state where the water immersion prevention sheet 41 is deployed in this way is referred to as the deployed state of the water immersion prevention sheet 41. This deployed state corresponds to the "water immersion prevention state" of the water immersion prevention sheet 41.

[0041] In this way, in this water immersion prevention structure, the water immersion prevention sheet 41 can shift from the wound state wound around the vertical handrail 31 to the above-described deployed state. And in the deployed state, water immersion prevention from the entrance earthen space 15 to the entrance hall 16 side is achieved.

[0042] In the deployed state of the water immersion prevention sheet 41, the sheet tip portion of the water immersion prevention sheet 41 (specifically, the sheet tip portion that is the other end in the winding direction of the water immersion prevention sheet 41) reaches the partition wall 22 or the vicinity of the partition wall 22. The partition wall 22 is provided with a sheet fixing portion 43 for fixing the sheet tip portion of the water immersion prevention sheet 41. The sheet fixing portion 43 is disposed near the boundary portion 25 between the entrance earthen space 15 and the entrance hall 16, and is composed of, for example, a sheet clamping portion that clamps the sheet tip portion of the water immersion prevention sheet 41. The sheet fixing portion 43 is provided over the entire vertical direction of the water immersion prevention sheet 41 and can clamp and fix the entire vertical direction of the sheet 41. Thereby, it is possible to hold the water immersion prevention sheet 41 in the deployed state. Further, in a state where the water immersion prevention sheet 41 is fixed to the sheet fixing portion 43, watertightness between the sheet 41 and the sheet fixing portion 43 is ensured over the entire vertical direction of the water immersion prevention sheet 41.

[0043] Subsequently, the operation procedure for preventing water immersion using the water immersion prevention sheet 41 will be described.

[0044] In the water immersion prevention work, first, the screw 37 to which the regulating member 35 is attached is removed, and then the regulating member 35 is removed from the partition wall 21. When removing the regulating member 35, it is removed by pulling it out laterally from between the partition wall 21 and the vertical sliding bar 31. Thereby, the vertical sliding bar 31 becomes rotatable in the circumferential direction.

[0045] Next, the water immersion prevention sheet 41 is pulled out from the vertical sliding bar 31 and shifted to the deployed state. In this case, the water immersion prevention sheet 41 is shifted to the deployed state while the vertical sliding bar 31 rotates. After the shift, the sheet tip portion of the water immersion prevention sheet 41 is fixed by the sheet fixing portion 43. Thereby, the water immersion prevention sheet 41 is held in the deployed state.

[0046] Next, an operation is performed to block the space between the lower end of the water intrusion prevention sheet 41 and the floor surface 16a of the entrance hall 16. In this operation, for example, a waterproof tape is attached along the boundary between the lower end of the water intrusion prevention sheet 41 and the floor surface 16a to block the space between the lower end of the sheet and the floor surface 16a.

[0047] Next, a water stop member 45 is disposed between the vertical handrail 31 and the partition wall 21 to perform an operation of blocking the space between the two 21, 31. The water stop member 45 is formed in a long shape, for example, by a rubber material, and its length is substantially the same as the vertical length of the water intrusion prevention sheet 41. In this operation, the water stop member 45 is fitted between the vertical handrail 31 and the partition wall 21 with its longitudinal direction facing the vertical direction. At this time, the lower end of the water stop member 45 is brought into close contact with the floor surface 16a of the entrance hall 16. Thus, a water intrusion prevention structure is constructed and a series of operations are completed.

[0048] According to the configuration of the present embodiment described in detail above, the following excellent effects can be obtained.

[0049] A vertical handrail 31 is provided at the edge of the partition wall 21 near the boundary 25 between the entrance earthen space 15 and the entrance hall 16, and the water intrusion prevention sheet 41 is wound around the vertical handrail 31. In this case, the water intrusion prevention sheet 41 can be arranged near the boundary 25 so as not to obstruct the movement of the residents.

[0050] Further, the vertical handrail 31 is rotatable, and by its rotation, the water intrusion prevention sheet 41 can be shifted from the vertical handrail 31 to a pulled-out and deployed state (corresponding to the water intrusion prevention state). In this case, since the water intrusion prevention sheet 41 can be quickly shifted to the deployed state, water intrusion prevention on the side of the entrance hall 16 (that is, the floor space side) can be achieved promptly.

[0051] Since the rotation of the vertical handrail 31 is restricted by the restricting member 35, the vertical handrail 31 can be suitably used as a handrail during normal times. Further, since a releasing means for releasing the rotation restriction by the restricting member 35 is provided, at the time of a flood, by releasing the rotation restriction of the vertical handrail 31, the flood prevention sheet 41 can be pulled out from the vertical handrail 31 and shifted to the deployed state. Thereby, while suitably using the vertical handrail 31 as a handrail, flood prevention by the flood prevention sheet 41 can be suitably achieved.

[0052] The restricting member 35 is attached to the partition wall 21 and restricts the rotation of the vertical handrail 31 by coming into contact with the vertical handrail 31. Further, the restricting member 35 can be removed from the partition wall 21 by removing the screw 37, and the rotation restriction of the vertical handrail 31 can be released by the removal. In this case, the method of releasing the rotation restriction of the vertical handrail 31 is easy to understand, and it is a suitable configuration for quickly shifting the flood prevention sheet 41 to the deployed state.

[0053] Further, the flood prevention sheet 41 is wound around a portion of the vertical handrail 31 below the restricting member 35. The lower portion of the vertical handrail 31 close to the floor surface 16a is considered to be a portion that is not used so much when used as a handrail. Therefore, according to such a configuration, while suppressing the deterioration of the usability as a handrail, the vertical handrail 31 can be used for winding the flood prevention sheet 41. Further, since the restricting member 35 is disposed in the middle portion, the portion above the restricting member 35 in the vertical handrail 31, that is, the portion that is gripped when using the vertical handrail 31 as a handrail can be made easy to understand, and it can be said that it is also a suitable configuration in that regard.

[0054] 〔Second Embodiment〕 Next, the water immersion prevention structure in the second embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a perspective view showing the entrance 11 provided with the water immersion prevention device 60, where (a) shows the state in which the water immersion prevention device 60 is housed in the under-bench space 55 of the entrance bench 51, and (b) shows the state in which the water immersion prevention device 60 is deployed. FIG. 6 is a front view showing the state in which the water immersion prevention device 60 is housed in the under-bench space 55 of the entrance bench 51. Hereinafter, the description will focus on the differences from the first embodiment.

[0055] As shown in FIGS. 5(a) and 6, an entrance bench 51 is installed at the edge of the partition wall 21 in the entrance 11. The entrance bench 51 is disposed near the boundary portion 25 between the entrance dirt space 15 and the entrance hall 16, and is installed straddling the entrance dirt space 15 and the entrance hall 16. The entrance bench 51 has a seat plate 52 on which a user sits and a pair of side plate portions 53 that support the seat plate 52 from below. The seat plate 52 is formed in a long flat plate shape extending in the arrangement direction in which the entrance dirt space 15 and the entrance hall 16 are arranged, and its upper surface serves as a seating surface. Here, the entrance bench 51 corresponds to the bench, and the side plate portion 53 corresponds to the support plate and the support leg.

[0056] Each side plate portion 53 is disposed at both longitudinal ends of the seat plate 52 and faces each other in the longitudinal direction. Of each side plate portion 53, one side plate portion 53a is disposed on the floor surface 15a of the entrance dirt space 15, and the other side plate portion 53b is disposed on the floor surface 16a of the entrance hall 16. An adjuster leg 54 is attached to the lower end portion of the side plate portion 53a, and the side plate portion 53a is disposed on the floor surface 15a via the adjuster leg 54. In FIGS. 5 and 6, the illustration of the adjuster leg 54 is omitted for convenience.

[0057] Each side plate portion 53 is disposed with its lateral width direction facing the direction in which the boundary portion 25 between the entrance dirt space 15 and the entrance hall 16 extends. The lateral dimension of each side plate portion 53 is substantially the same as the depth dimension of the seat plate 52. Also, each side plate portion 53 is in contact with or close to the wall surface of the partition wall 21, and waterproofing is ensured by performing sealing treatment or the like at the contact or close portion.

[0058] In the entrance bench 51, a flood prevention device 60 as a flood prevention means is provided in a bench lower space 55 which is a lower space of a seat board 52. Hereinafter, the configuration of the flood prevention device 60 will be described with reference to FIGS. 5 and 6, and FIGS. 7 and 8. FIG. 7 is a front view showing a panel body 61 constituting the flood prevention device 60, and (b) is a rear view showing the panel body 61. FIG. 8 is a front view showing a state where the flood prevention device 60 is deployed, (b) is a cross-sectional view taken along line E-E of (a), and (c) is a cross-sectional view taken along line F-F of (a).

[0059] As shown in FIGS. 5(a) and 6, the flood prevention device 60 has a plurality (four in this embodiment) of panel bodies 61 having a wall shape. These panel bodies 61 are formed in a rectangular plate shape and have substantially the same size as the side plate portion 53a of the entrance bench 51. Further, as shown in FIG. 7, a pair of rotators 62 are attached to the lower end portions of each panel body 61. These rotators 62 are arranged at both end portions in the width direction of the panel body 61. Each panel body 61 is erected on the floor surface 15a of the entrance dirt space 15 via each rotator 62. Therefore, it is possible to move the panel body 61 in the width direction while rolling each rotator 62. In addition, a lock portion (not shown) is provided on the rotator 62, and the rotation of the rotator 62 can be locked and unlocked by the lock portion. In FIGS. 5 and 6, the illustration of the rotator 62 is omitted for convenience.

[0060] When each panel body 61 is erected on the floor surface 15a of the entrance dirt space 15, it extends above the floor surface 16a of the entrance hall 16. In this case, the vertical dimension of the portion of the panel body 61 that extends above the floor surface 16a is larger than the step dimension of the floor step portion 18 (that is, the vertical dimension between the floor surface 15a of the entrance dirt space 15 and the floor surface 16a of the entrance hall 16).

[0061] The water immersion prevention device 60 is housed in the under-bench space 55 of the entrance bench 51 with each panel body 61 stacked in the thickness direction. Each panel body 61 is arranged in a state of overlapping with the side plate portion 53a of the entrance bench 51 in the thickness direction. In this case, each panel body 61 is arranged with its width direction facing the direction in which the boundary portion 25 between the entrance dirt space 15 and the entrance hall 16 extends.

[0062] In the following description, in order to distinguish each panel body 61 in some cases, A to D are attached to the reference signs of each panel body 61. Specifically, among the panel bodies 61A to 61D, the panel body 61A, the panel body 61B, the panel body 61C, and the panel body 61D are in order from the one on the side plate portion 53a side.

[0063] Among the plurality of panel bodies 61, the panel bodies 61 that overlap each other are connected so as to be relatively movable in the width direction. As shown in FIG. 7(a), a groove portion 63 extending horizontally is formed on one plate surface of the panel body 61 at its upper end side. The groove portion 63 extends over substantially the entire width direction of the panel body 61. On the other hand, a protruding portion 64 is provided on the other plate surface of the panel body 61 at its upper end side. The protruding portion 64 is arranged at the end in the width direction of the panel body 61, and more specifically, at the end on the partition wall 21 side.

[0064] As shown in Fig. 8, among the panel bodies 61 that overlap each other, the protruding portion 64 of one panel body 61 extends into the groove portion 63 of the other panel body 61. Thereby, these panel bodies 61 are connected to each other via the protruding portion 64. Further, in the connected state of such panel bodies 61, the protruding portion 64 that has entered the groove portion 63 can be displaced along the groove portion 63. For this reason, the above-mentioned panel bodies 61 can relatively move in the width direction due to the displacement of the protruding portion 64. As a result, due to the relative movement of the panel bodies 61, the plurality of panel bodies 61 constituting the water immersion prevention device 60 are configured to be deployed in the width direction as a whole (see Figs. 5(b) and 8). In this case, the plurality of panel bodies 61 are arranged in a row along the boundary portion 25 between the entrance earthen space 15 and the entrance hall 16. The state in which the plurality of panel bodies 61 are thus deployed is hereinafter referred to as the deployed state of the water immersion prevention device 60. Note that this deployed state corresponds to the "water immersion prevention state" of the water immersion prevention device 60.

[0065] In the deployed state of the water immersion prevention device 60, the panel bodies 61A to 61D are arranged in the order of panel body 61D, panel body 61C, panel body 61B, and panel body 61A from the tip side to the base end side in the deployment direction. The panel body 61D located at the tip portion in the deployment direction is arranged at a position where it abuts or is close to the partition wall 22. Further, the panel body 61A located at the base end portion in the deployment direction is arranged continuously with the side plate portion 53a of the entrance bench 51 in the width direction. Specifically, a protruding portion 66 is provided at the upper end portion of the inner surface of the side plate portion 53a, and the protruding portion 66 extends into the groove portion 63 of the panel body 61A. Thereby, the panel body 61A is connected to the side plate portion 53a in a state where it can move in the width direction with respect to the side plate portion 53a. For this reason, in the deployed state of the water immersion prevention device 60, the panel body 61A moves in the width direction with respect to the side plate portion 53a and is arranged to be continuously connected with the side plate portion 53a in the width direction. Therefore, in this case, the plurality of panel bodies 61A and the side plate portion 53a are arranged continuously along the boundary portion 25 between the entrance earthen space 15 and the entrance hall 16.

[0066] Subsequently, the operation procedure for preventing water immersion using the water immersion prevention device 60 will be described.

[0067] First, pull out the water intrusion prevention device 60 from the space under the bench 55 and shift it to the deployed state. In this case, pull out the panel body 61D of the water intrusion prevention device 60 from the space under the bench 55 and pull it in the width direction (move it). Then, following this, the other panel bodies 61A to 61C are pulled out from the space under the bench 55 and pulled in the width direction. As a result, each of the panel bodies 61A to 61D is deployed in the width direction and arranged along the boundary portion 25 between the entrance earthen floor space 15 and the entrance hall 16. That is, the water intrusion prevention device 60 is set in the deployed state.

[0068] Next, lock the rotating bodies 62 of each panel body 61 with the locking portions. Thereby, the movement of each panel body 61 in the width direction is restricted. Therefore, the water intrusion prevention device 60 is held in the deployed state.

[0069] Next, perform an operation to close the gap between the panel body 61D and the partition wall 22. In this operation, for example, the gap is closed by attaching a waterproof tape along the boundary portion between the panel body 61D and the partition wall 22.

[0070] Next, perform an operation to close the gap between the lower end portions of the panel bodies 61A to 61D and the floor surface 15a of the entrance earthen floor space 15, and the gap between the side plate portion 53a of the entrance bench 51 and the floor surface 15a. In this operation, for example, the gap is closed by fitting a long rubber water stop member 68 into each gap.

[0071] Next, perform an operation to close the gap between adjacent panel bodies 61 and the gap between the panel body 61A and the side plate portion 53a. In this operation, for example, the gap is closed using a waterproof tape. Thus, the water intrusion prevention structure is constructed and a series of operations are completed.

[0072] According to the configuration of the present embodiment described in detail above, the following excellent effects can be obtained.

[0073] The water intrusion prevention device 60 is disposed near the boundary 25 between the entrance earthen space 15 and the entrance hall 16 (and thus the floor space) with a plurality of panel bodies 61 stacked on one another. Thereby, the water intrusion prevention device 60 having the plurality of panel bodies 61 can be arranged in a compact state without obstructing the movement of the occupants.

[0074] Also, since the panel bodies 61 overlapping each other are connected so as to be relatively movable in the width direction, when one panel body 61 is pulled in the width direction, the other panel bodies 61 are pulled in the width direction following it. Thereby, each panel body 61 can be easily deployed in the width direction and arranged along the boundary 25 between the entrance earthen space 15 and the entrance hall 16, whereby the water intrusion prevention device 60 can be quickly shifted to the deployed state (corresponding to the water intrusion prevention state).

[0075] An entrance bench 51 is installed at the edge of the partition wall 21 near the boundary 25 between the entrance earthen space 15 and the entrance hall 16, and the water intrusion prevention device 60 is accommodated in the under-bench space 55 of the entrance bench 51. In this case, the water intrusion prevention device 60 can be arranged in a less conspicuous state by using the entrance bench 51.

[0076] The water intrusion prevention device 60 is accommodated in the under-bench space 55 with a plurality of panel bodies 61 overlapping the side plate portion 53a of the entrance bench 51. Further, when the plurality of panel bodies 61 are pulled out from the under-bench space 55 and deployed, the water intrusion prevention device 60 shifts to the deployed state. And in the deployed state, the plurality of panel bodies 61 and the side plate portion 53a are arranged continuously along the boundary 25 between the entrance earthen space 15 and the entrance hall 16. In this case, by using the side plate portion 53a of the entrance bench 51, a continuous water intrusion prevention structure can be constructed by the side plate portion 53a and each panel body 61.

[0077] 〔Third Embodiment〕 Next, the flood prevention structure in the third embodiment will be described with reference to FIG. 9. FIG. 9 is a perspective view showing a flood prevention plate 71 provided on the entrance frame 19, where (a) shows the case where the flood prevention plate 71 is in the lower position, and (b) shows the case where the flood prevention plate 71 is in the upper position. Hereinafter, the description will focus on the differences from the first embodiment.

[0078] As shown in FIG. 9(a), a flood prevention plate 71 as a flood prevention means is provided on the floor step portion 18 formed at the boundary portion 25 between the entrance dirt space 15 and the entrance hall 16. The flood prevention plate 71 is disposed overlapping the front surface of the entrance frame 19 and is formed in a long flat plate shape extending in the longitudinal direction of the entrance frame 19. Specifically, the flood prevention plate 71 has substantially the same length as the length of the entrance frame 19 in the longitudinal direction and extends so as to straddle between the partition walls 21 and 22. Note that skirting boards 74 are provided at the lower ends of the partition walls 21 and 22. Also, the entrance frame 19 corresponds to the frame portion.

[0079] The flood prevention plate 71 is attached to the entrance frame 19 via a rotation shaft 72 provided at its upper end. The rotation shaft 72 is a shaft extending in the longitudinal direction of the flood prevention plate 71 and is attached to the upper end portion of the front surface of the entrance frame 19. The flood prevention plate 71 is rotatable in the vertical direction about this rotation shaft 72. By this rotation, the flood prevention plate 71 can move between a lower position (the position shown in FIG. 9(a)) disposed overlapping the front surface of the entrance frame 19 and an upper position (the position shown in FIG. 9(b)) protruding above the floor surface 16a of the entrance hall 16. Note that the upper position of the flood prevention plate 71 is a position rotated 180° upward from the lower position. Also, although not shown, the entrance frame 19 is provided with a lock portion (not shown) for holding the flood prevention plate 71 in the upper position.

[0080] Next, the operation procedure for preventing flooding using the flood prevention plate 71 will be described. In this operation, first, the flood prevention plate 71 is rotated and moved from the lower position to the upper position. After the movement, the flood prevention plate 71 is locked by the locking portion. As a result, the flood prevention plate 71 is held in the upper position. Note that the state where the flood prevention plate 71 is located in the upper position corresponds to the "flood prevention state".

[0081] Thereafter, the gaps between the longitudinal end portions of the flood prevention plate 71 and the sill 74 and the partition walls 21, 22 are closed using a waterproof tape or the like. Thus, the flood prevention structure is constructed and a series of operations is completed.

[0082] 〔Other Embodiments〕 The present invention is not limited to the above-described first to third embodiments, and may be implemented, for example, as follows.

[0083] (1) In the above-described first embodiment, the rotation restriction of the longitudinal sliding rod 31 is released by removing the restricting member 35 from the partition wall 21, but the restricting member 35 may be made movable to a position spaced apart from the longitudinal sliding rod 31, and the rotation restriction may be released by the movement. Specifically, a support rail (corresponding to the moving means) for supporting the restricting member 35 may be provided on the wall surface of the partition wall 21, and the rotation restriction may be released by moving the restricting member 35 along the support rail to a position spaced apart from the longitudinal sliding rod 31.

[0084] (2) In the above-described first embodiment, the rotation of the longitudinal sliding rod 31 is restricted using the restricting member 35, but the means for restricting the rotation of the longitudinal sliding rod 31 is not necessarily limited to this. For example, a hole portion straddling the upper support portion 33 and the longitudinal sliding rod 31 may be formed, and the rotation of the longitudinal sliding rod 31 may be restricted by inserting an insertion member such as a pin into the hole portion. In this case, the rotation restriction of the longitudinal sliding rod 31 can be released by removing the insertion member from the hole portion.

[0085] (3) In the above first embodiment, the waterproof sheet 41 was wound around the vertical handrail rod 31 (corresponding to the rod-shaped member) used as the handrail. However, instead of the vertical handrail rod 31, a dedicated rod-shaped member extending vertically for winding may be provided, and the waterproof sheet 41 may be wound around the rod-shaped member. Also in this case, the rod-shaped member may be rotatable in the circumferential direction, and the waterproof sheet 41 may be pulled out from the rod-shaped member by the rotation.

[0086] (4) In the above first embodiment, the sheet fixing portion 43 for fixing the sheet tip portion of the waterproof sheet 41 was provided on the partition wall 22. However, this may be changed, and a hooking portion (such as a hook) for hooking the sheet tip portion may be provided on the partition wall 22. For example, a hole portion is formed in the sheet tip portion, and the hole portion is hooked on the hooking portion. Also in this case, after hooking the sheet tip portion on the hooking portion, the space between the sheet tip portion and the partition wall 22 is blocked using a waterproof tape or the like.

[0087] (5) In the above second embodiment, the flood prevention device 60 was housed in the bench lower space 55 of the entrance bench 51. However, in a building where the entrance bench 51 is not installed, the flood prevention device 60 may be directly arranged (in an exposed state) along the wall of the partition wall 21. Also in this case, the flood prevention device 60 is configured to be deployed so as to straddle each of the partition walls 21 and 22.

[0088] (6) In the above second embodiment, the flood prevention device 60 was provided on the floor surface 15a of the entrance dirt space 15. However, this may be changed, and the flood prevention device 60 may be provided on the floor surface 16a of the entrance hall 16. Also in this case, the flood prevention device 60 is arranged near the boundary portion 25 between the entrance dirt space 15 and the entrance hall 16.

[0089] (7) In the above second embodiment, the support legs of the entrance bench 51 were the plate-shaped side plate portions 53. However, the support legs may be rod-shaped.

[0090] (8) In the above-described third embodiment, the water immersion prevention plate 71 is rotatable in the vertical direction. However, for example, as shown in FIG. 10, the water immersion prevention plate 81 may be slidable in the vertical direction. In the example of FIG. 10(a), rail members 82 extending in the vertical direction are respectively disposed at both longitudinal ends of the water immersion prevention plate 71. These rail members 82 are respectively attached to the wall surfaces of the partition walls 21, 22 (not shown in FIG. 10 for convenience), and have rail grooves 83 that are opened so as to face each other. Both longitudinal ends of the water immersion prevention plate 81 are inserted into the rail grooves 83 of the respective rail members 82, and in this inserted state, the water immersion prevention plate 81 is slidable in the vertical direction along the respective rail members 82. Even in such a configuration, by sliding the water immersion prevention plate 81 along the rail members 82, the water immersion prevention plate 81 can be moved from the lower position (the position shown in FIG. 10(a)) where it is overlapped and disposed on the front surface of the entrance frame 19 to the upper position (the position shown in FIG. 10(b)) where it protrudes above the floor surface 16a of the entrance hall 16.

[0091] (9) In addition to the entrance 12, a building may be provided with building entrances such as side doors. For example, in a building provided with a side door, an earthen floor space continuous with the side door and a floor space continuous with the earthen floor space are provided. Therefore, in such a building, the water immersion prevention structure of the present invention may be applied to prevent water immersion from the earthen floor space to the floor space.

Description of Reference Numerals

[0092] 10... Building, 12... Entrance as a building entrance, 15... Entrance earthen floor space as an earthen floor space, 16... Entrance hall constituting a floor space, 17... Earthen floor, 18... Floor step portion, 19... Entrance frame as a frame portion, 25... Boundary portion, 31... Longitudinal handrail bar as a rod-shaped member, 35... Regulation member as a rotation regulation means and a rotation regulation member, 37... Screw as a removal means and a release means, 41... Water immersion prevention sheet as a water immersion prevention means, 51... Entrance bench as a bench, 52... Seat board, 53... Side plate portion as a support leg and a support plate, 55... Bench lower space as a lower space, 60... Water immersion prevention device as a water immersion prevention means, 61... Panel body, 71... Water immersion prevention plate as a water immersion prevention means.

Claims

1. A dirt floor space that is continuous with the building entrance and whose floor surface is formed by a dirt floor, and an above-floor space that is continuous with the dirt floor space and whose floor surface is at a position higher than the dirt floor, and is applied to a building comprising: provided with plate-shaped or sheet-shaped water intrusion prevention means disposed at the wall edge near the boundary between the dirt floor space and the above-floor space, or disposed on top of a floor step formed at the boundary, The water intrusion prevention means is capable of transitioning to a water intrusion prevention state in which it is disposed along the boundary in a state extending above the floor surface of the above-floor space so as to prevent water intrusion from the dirt floor space side to the above-floor space side. A water intrusion prevention structure in a building.

2. A rod-shaped member extending in the vertical direction is provided at the wall edge near the boundary, The water intrusion prevention means is a water intrusion prevention sheet wound around the rod-shaped member, The rod-shaped member is rotatable in the circumferential direction, The water intrusion prevention sheet transitions to the water intrusion prevention state by being pulled out from the rod-shaped member along the boundary by the rotation of the rod-shaped member. The water intrusion prevention structure in the building according to claim 1.

3. The rod-shaped member is a vertical handrail rod used as a handrail, support means for rotatably supporting the vertical handrail rod, rotation restricting means for restricting the rotation of the vertical handrail rod, release means for releasing the rotation restriction by the rotation restricting means, The water intrusion prevention structure in the building according to claim 2, comprising:

4. The rotation restricting means is a rotation restricting member disposed at an intermediate portion of the vertical handrail rod and attached to the wall near the boundary, The rotation restricting member restricts the rotation of the vertical handrail rod by coming into contact with the vertical handrail rod, The release means is a removal means for making the rotation restricting member removable from the wall or a moving means for making the rotation restricting member movable to a position spaced apart from the vertical handrail, The water intrusion prevention sheet is wound around a portion of the vertical handrail below the rotation restricting member. The water intrusion prevention structure in a building according to claim 3.

5. The water intrusion prevention means is a water intrusion prevention device configured by having a plurality of wall-like panel bodies erected on the floor surface, The water intrusion prevention device is disposed near the wall at the boundary portion in a state where the plurality of panel bodies are stacked, Among the plurality of panel bodies, the panel bodies overlapping each other are connected so as to be relatively movable in the width direction, By the relative movement of the panel bodies, the plurality of panel bodies are deployed in the width direction and arranged along the boundary portion, whereby the water intrusion prevention device shifts to the water intrusion prevention state. The water intrusion prevention structure in a building according to claim 1.

6. A bench is installed near the wall at the boundary portion, The bench has a seat plate on which a user sits and support legs that support the seat plate from below, The water intrusion prevention device is accommodated in a space below the seat plate in a state where the plurality of panel bodies are stacked on each other. The water intrusion prevention structure in a building according to claim 5.

7. The support legs are plate-shaped and are support plates arranged with their lateral width direction facing the extending direction of the boundary portion, The water intrusion prevention device is accommodated in the lower space in a state where the plurality of panel bodies overlap the support plate, When the plurality of panel bodies are pulled out from the lower space and deployed in the width direction, the water intrusion prevention device is configured to shift to the water intrusion prevention state, In the water intrusion prevention state, the plurality of panel bodies and the support plate are arranged continuously along the boundary portion. The water intrusion prevention structure in a building according to claim 6.

8. A frame portion extending along the boundary portion is provided in the floor step portion, The water intrusion prevention means is a water intrusion prevention plate extending in the longitudinal direction of the frame portion and disposed overlapping the front surface of the frame portion, The water intrusion prevention plate is movable upward from the front surface of the frame portion, and shifts to the water intrusion prevention state by the upward movement thereof. The water intrusion prevention structure in a building according to claim 1.

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