Waterstop

Abstract

To provide a water-stop plate with a simple configuration that can configure a water-stop structure for a door frame for maintaining sufficient water-stop performance.SOLUTION: A water-stop plate 6 of the present invention, which is installed to close the lower portion of the opening of a door frame, includes a variable plate part 61 whose plate between right and left ends is formed of a curved plate having a convex plate surface 63 and a concave plate surface 64 which project in one direction, and the variable plate part 61 is configured such that when the opening is closed by a door provided on the door frame in an open / close manner after left, right and bottom edges of the concave plate surface face a doorstop of the door frame, the convex plate surface 63 is pressed against the door, which causes the variable plate part 61 to deform from the curved plate state to a flat plate state to close the lower portion at the opening of the door frame.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a waterstop that is installed to close the lower portion of an opening in a door frame. [Background technology]

[0002] A known waterproof door structure uses a waterstop plate that is sandwiched between the door and the door stop of the door frame when the door is closed to block the lower part of the opening in the door frame and prevent water from passing through (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-218794 Summary of the Invention [Problem to be solved by the invention]

[0004] The waterstop disclosed in Patent Document 1 has a configuration in which sealing portions are provided on the left, right and bottom ends of a rectangular flat plate so as to cover the end faces and both plate surfaces. In Patent Document 1, when the door is closed, the left, right and bottom edges of the panel surface on the indoor side of the door come into contact with the sealing portions provided on the left, right and bottom edges of the panel surface located on the outdoor side of the water stop, but the panel surface on the indoor side of the door does not come into contact with the panel surface on the outdoor side of the water stop. With this structure, the pressing force from the door is absorbed by the sealing section, and the compression between the sealing sections located on the left, right, and bottom ends of the panel surface facing the outside and the gasket (airtight rubber) located on the door stop of the door frame may not be sufficiently maintained, making it possible that sufficient water-stopping performance may not be maintained.In order to maintain sufficient water-stopping performance, it may be necessary to use a mechanism such as a cremone lock to firmly secure the door while it is pressed against the door stop. Therefore, there has been a demand for a waterproof structure for a door frame that is simple in construction and can maintain sufficient waterproof performance.

[0005] The present invention provides a waterstop plate that can be used to form a waterstop structure for a door frame that can maintain sufficient waterstop performance with a simple configuration. [Means for solving the problem]

[0006] The water stop according to the present invention is a water stop installed so as to close the lower portion of the opening of the door frame. In The plate portion between the left end and the right end is constituted by a curved plate having a convex plate surface protruding in one direction and a concave plate surface. The plate is configured to be deformable into a flat plate by elastic deformation of the plate. a variable plate portion, The curved plate that makes up The left end side, right end side, and bottom end side of the concave plate face the door stop of the door frame. The concave plate is formed to a size that allows it to close the lower end of the opening of the door frame from the outside, and the left end, right end, and lower end of the concave plate face the door stop of the door frame. It was set up to The convex plate surface of the curved plate constituting the variable plate portion receives a force from the door closing the opening of the door frame, The variable plate portion is configured to deform from a curved plate into a flat plate to close a lower portion of the opening in the door frame. A waterstop plate, the left end, right end, and lower end of the concave plate surface are provided with pressing portions for pressing watertightness maintaining members, the left pressing portion provided on the left end side comprises a left support plate that extends from a position along the left edge of the concave plate surface at a fixed distance from the left edge toward the left edge so as to move away from the concave plate surface, and a left pressing plate having a pressing surface that extends from the extended end of the left support plate in a direction approaching the left edge and the concave plate surface, the right pressing portion provided on the right end side comprises a right support plate that extends from a position along the right edge at a fixed distance from the right edge of the concave plate surface toward the right edge so as to move away from the concave plate surface, and a right pressing plate having a pressing surface that extends from the extended end of the right support plate in a direction approaching the right edge and the concave plate surface, The pressing portion includes a lower pressing plate having a pressing surface provided at a position along the lower end and at a certain distance from the lower end of the concave plate surface, and each pressing surface of each pressing portion is provided so as to face the inner surface of the opening of the door frame located indoors relative to the doorstop of the door frame, and the watertightness maintaining member is provided on each pressing surface of the pressing portion. The left end side, right end side, and lower end side of the concave plate surface of the curved plate constituting the variable plate portion is installed so as to face the doorstop of the door frame, and when the convex plate surface of the curved plate that constitutes the variable plate portion receives a force from the door that closes the opening of the door frame, the variable plate portion deforms from a curved plate into a flat plate, and the watertightness maintaining member provided on each pressing surface of each pressing portion is maintained in a state pressed against the inner surface of the opening of the door frame, thereby closing the lower portion of the opening of the door frame while maintaining watertightness. It is characterized by: Also, The waterstop according to the present invention is a waterstop installed to close the lower portion of an opening in a door frame, and is provided with a variable plate portion configured so that the plate portion between the left and right ends is made of a curved plate having a convex plate surface and a concave plate surface that protrude in one direction, and is deformable into a flat plate by elastic deformation of the plate, and the curved plate that makes up the variable plate portion is formed so that the left end side, right end side, and bottom end side of the concave plate surface face the doorstop of the door frame, and is sized to be able to close the bottom end side of the opening of the door frame from the outside, and the left end side, right end side, and bottom end side of the concave plate surface face the doorstop of the door frame. a waterstop plate configured so that when the convex plate surface of the curved plate constituting the variable plate portion, which is installed so as to face the door, receives a force from the door closing the opening of the door frame, the variable plate portion deforms from the curved plate into a flat plate shape to close the lower part of the opening of the door frame, and the left end side, right end side, and lower end side of the concave plate surface are provided with pressing portions for pressing the watertightness maintaining member, and the left pressing portion provided on the left end side is a left pressing portion that is a certain distance from the left end of the concave plate surface and extends from a position along the left end toward the left end so as to move away from the concave plate surface a support plate, and a left pressure plate having a pressure surface extending from an extended end of the left support plate in a direction approaching the left end and the concave plate surface, and the right pressure portion provided on the right end side is provided with a right support plate extending from a position along the right end at a certain distance from the right end of the concave plate surface toward the right end so as to move away from the concave plate surface, and a right pressure plate having a pressure surface extending from the extended end of the right support plate in a direction approaching the right end and the concave plate surface, and the lower pressure portion provided on the lower end side is provided with a right pressure plate extending from a position along the lower end at a certain distance from the lower end of the concave plate surface The variable plate portion is provided with a lower pressure plate having a pressure surface provided from the curved plate, and the left end side, right end side, and lower end side of the concave plate surface are installed so that they face the doorstop of the door frame. When the convex plate surface of the curved plate constituting the variable plate portion receives a force from the door closing the opening of the door frame, the variable plate portion deforms from a curved plate into a flat plate, and each pressure surface of each pressure portion is maintained in a state pressing the watertightness maintaining member provided on the inner surface of the opening located indoors relative to the doorstop of the door frame, thereby closing the lower portion of the opening of the door frame while maintaining watertightness. Characterized by 。 Book According to the waterstop plate of the present invention, it is possible to construct a waterstop structure for a door frame that can maintain sufficient waterstop performance with a simple configuration. [Brief explanation of the drawings]

[0007] [Figure 1] A view from the indoor side of the waterproof structure of a door frame in which a water stop plate is installed to block the lower part of the opening of the door frame (embodiment 1). [Figure 2] 1A is a perspective view showing a waterstop, and FIG. 1B is a perspective view showing the state after deformation of the variable plate portion of the waterstop (Embodiment 1). [Figure 3] (a) is a cross-sectional view showing the state in which a water stop plate is installed on the inner surface of the outdoor side frame of the door frame, and (b) is a cross-sectional view showing the state after deformation of the variable plate portion when the door is closed (embodiment 1). [Figure 4](a) is a cross-sectional view showing the state in which a water stop plate is installed on the inner surface of the outdoor side frame of the door frame, and (b) is a cross-sectional view showing the state after deformation of the variable plate portion when the door is closed (embodiment 2). [Figure 5] (a) is a cross-sectional view showing the state in which a water stop plate is installed on the inner surface of the outdoor side frame of the door frame, and (b) is a cross-sectional view showing the state after deformation of the variable plate portion when the door is closed (embodiment 3). [Figure 6] (a) is a cross-sectional view showing the state in which a water stop plate is installed on the inner surface of the outdoor side frame of the door frame, and (b) is a cross-sectional view showing the state after deformation of the variable plate portion when the door is closed (embodiment 4). DETAILED DESCRIPTION OF THE INVENTION

[0008] Embodiment 1 1 to 3, a waterstop 6 according to the first embodiment and a structure related to the waterstop 6 will be described. For example, the structure of the waterstop 6 that is installed so as to block the lower portion of an opening 51 of a door frame 1 provided in a building structure, a waterstop method for the door frame 1 using the waterstop 6, and a waterstop structure for the door frame 1 using the waterstop 6 will be described. In this specification, up, down, left, right, indoors, and outdoors are defined as directions shown in Figures 1 to 6. Here, indoors refers to the indoor side of the door frame 1, outdoors refers to the outdoor side of the door frame 1, and left and right refer to the left and right when viewed from the indoor side of the door frame 1. Furthermore, "building structures" refers to detached houses, apartment buildings, buildings, warehouses, factories, and other structures.

[0009] As shown in Figures 1 and 3, the door frame 1 has its outer frame surface attached to an opening W1 formed in, for example, an exterior wall W of an architectural structure, and has a frame inner surface (visible surface) 2, an outdoor front surface (outdoor facing surface) 3, and an indoor front surface (indoor facing surface) 4. The frame inner surface 2 includes at least an indoor frame inner surface 20, a door stop 30, and an outdoor frame inner surface 40. The opening 50 of the door frame 1 is an opening formed by being surrounded by the frame inner surface 2, and includes at least an opening 51 formed by being surrounded by the indoor frame inner surface 20 and an opening 52 formed by being surrounded by the outdoor frame inner surface 40.

[0010] As shown in Figure 3(a), the indoor frame inner surface 20 is a rectangular frame inner surface having, for example, a left inner surface 21 and a right inner surface 22 that face each other in parallel with each other and an upper inner surface 23 (not shown) that face each other in parallel with each other, i.e., the inner surface of the opening 51 that is located indoors relative to the door stop 30 of the door frame 1. Similarly, the outdoor frame inner surface 40 is a rectangular frame inner surface having, for example, a left inner surface 41 and a right inner surface 42 that face each other in parallel, and an upper inner surface and a lower inner surface 43 (not shown) that face each other in parallel.

[0011] As shown in Figure 3(a), the door stop 30 is configured, for example, with an outdoor edge 29 of the indoor frame inner surface 20, a rail groove 31 formed between the indoor frame inner surface 20 and the outdoor frame inner surface 40, and an airtightness maintaining member 32, for example called airtight rubber, attached to the rail groove 31. That is, the door stop 30 is provided with a rail groove 31 for mounting an airtightness maintaining member 32 , and the airtightness maintaining member 32 is mounted in the rail groove 31 . In other words, when the door frame 1 is viewed from the outdoor side, the door stop 30 is configured to include an airtightness maintaining member 32 arranged in a rectangular ring shape surrounding the outside of the opening 51 surrounded by the indoor side frame inner surface 20.

[0012] As shown in Figure 3(a), the door 11, which is provided in a manner that allows it to be opened and closed in the door frame 1, is configured so that the opening 51 of the door frame 1 can be opened and closed by attaching its left side edge to the boundary edge between the outdoor side edge of the left inner surface 41 of the outdoor side frame inner surface 40 and the outdoor front surface 3 via a hinge 15, or by attaching its right side edge to the boundary edge between the outdoor side edge of the right inner surface 42 of the outdoor side frame inner surface 40 and the outdoor front surface 3 via a hinge. Therefore, when the water stop plate 6 described later is not installed on the door frame 1 and the door 11 is set to a closed state to close the opening 51, the door 11 is accommodated in the door accommodating recess formed by the door stop 30 and the inner surface 40 of the outdoor side frame, and the left, right, upper and lower end surfaces of the indoor side panel surface 12 of the door 11 are in close contact with the airtightness maintaining member 32, so that the opening 51 of the door frame 1 is airtightly blocked. Furthermore, as described above, when the door 11 is set to the closed state to close the opening 51, the airtightness maintaining member 32 is attached to the rail groove 31 so that the outdoor end of the airtightness maintaining member 32 protrudes outdoors beyond the outdoor edge 29 of the indoor frame inner surface 20 so that the left, right, upper and lower end surfaces of the indoor side panel surface 12 of the door 11 are in close contact with the airtightness maintaining member 32.

[0013] As shown in FIG. 2, the waterstop 6 is configured to include a variable plate portion 61, a pressing portion 62 for pressing the watertightness maintaining member 7, and the watertightness maintaining member 7 provided on the pressing portion 62.

[0014] As shown in Fig. 2(a), the variable plate portion 61 is configured by a curved plate having a convex plate surface 63 and a concave plate surface 64, with the plate portion between the left end and the right end protruding in one direction, and is configured by a plate that deforms into a flat plate shape as shown in Fig. 2(b) due to elastic deformation of the plate when a force is applied to the convex plate surface 63 from the door 11. The plate that configures the variable plate portion 61 is configured by a thin plate with a fixed thickness made of, for example, synthetic resin, metal, or the like. It is noted that a curved plate formed to be curved between the left and right ends of the plate may be used as the curved plate constituting the variable plate portion 61. It is preferable to use a curved plate formed to be gently curved between the left and right ends of the plate as shown in Fig. 2(a). In addition, the curved plate constituting the variable plate portion 61 is formed so that the left end side, right end side and lower end side of the concave plate surface 64 face the door stop 30 formed to surround the outdoor ends of the lower inner surface 23, left inner surface 21 and right inner surface 22 of the indoor side frame inner surface 20, and is sized to be able to block the lower end side of the opening 51 of the door frame 1 from the outdoor side. That is, the variable plate portion 61 is configured so that the left, right and bottom ends of the concave plate surface 64 face the door stops 30 on the left, right and bottom ends of the door frame 1, and when the opening 51 is closed by the door 11, the convex plate surface 63 is pressed against the door 11, causing the variable plate portion 61 to deform from a curved plate into a flat plate, thereby blocking the lower part of the opening 51 of the door frame 1.

[0015] As shown in Figures 2(a) and 3(a), the pressing portion 62 is configured to include a left pressing portion 65 provided on the left end side of the concave plate surface 64 of the variable plate portion 61, a right pressing portion 66 provided on the right end side of the concave plate surface 64 of the variable plate portion 61, and a lower pressing portion 67 provided on the lower end side of the concave plate surface 64 of the variable plate portion 61. The left pressing portion 65 comprises a left support plate 65a that extends from a position along the left edge of the concave plate surface 64 at a certain distance from the left edge toward the left edge, away from the concave plate surface 64, and a left pressing plate 65b that has a pressing surface that extends from the extended end of the left support plate 65a in a direction approaching the left end and the concave plate surface 64. The right pressing portion 66 comprises a right support plate 66a that extends from a position along the right edge of the concave plate surface 64 at a certain distance from the right edge toward the right edge, away from the concave plate surface 64, and a right pressing plate 66b that has a pressing surface that extends from the extended end of the right support plate 66a in a direction approaching the right edge and the concave plate surface 64. The lower pressing portion 67 is configured by a lower pressing plate having a pressing surface provided at a position along the lower end of the concave plate surface 64 at a certain distance from the lower end.

[0016] The left pressing portion 65, the right pressing portion 66, and the lower pressing portion 67 are provided separately from one another. That is, the left pressing portion 65 and the lower pressing portion 67 are not connected to each other, and the right pressing portion 66 and the lower pressing portion 67 are not connected to each other. That is, the lower pressure plate that constitutes the lower pressure portion 67 is composed of a flat plate whose plate surface is formed by a plane that is parallel to the lower edge of the variable plate portion 61 and perpendicular to the concave plate surface 64, and the lower ends of the left pressure portion 65 and the right pressure portion 66 are configured to face the upper plate surface of the flat plate that constitutes the lower pressure portion 67 with a small gap between them. Furthermore, when the left, right and lower end sides of the concave plate surface 64 of the variable plate portion 61 are installed so as to face the door stop 30 on the left, right and lower end sides of the door frame 1, the pressing surface of the left pressing plate 65b of the left pressing portion 65 is a plate surface facing the left inner surface 21 of the indoor side frame inner surface 20, the pressing surface of the right pressing plate 66b of the right pressing portion 66 is a plate surface facing the right inner surface 22 of the indoor side frame inner surface 20, and the pressing surface of the lower pressing plate that constitutes the lower pressing portion 67 is the lower plate surface of the lower pressing plate. Furthermore, for example, when the variable plate portion 61 is in a curved plate state, the left end surface 67s of the lower pressing plate constituting the lower pressing portion 67 is positioned closer to the left end of the variable plate portion 61 than the left end of the left pressing plate 65b, and the right end surface 67s of the lower pressing plate constituting the lower pressing portion 67 is positioned closer to the right end of the variable plate portion 61 than the right end of the right pressing plate 66b. Then, when the variable plate portion 61 is deformed into a flat plate, the left end surface 67s of the lower pressing plate constituting the lower pressing portion 67 and the pressing surface of the left pressing plate 65b are positioned on the same plane, and the right end surface 67s of the lower pressing plate constituting the lower pressing portion 67 and the pressing surface of the right pressing plate 66b are positioned on the same plane.

[0017] The watertightness maintaining member 7 is made of, for example, rubber, and is provided on the pressing surface of the left pressing plate 65b facing the left inner surface 21 of the indoor side frame inner surface 20, the pressing surface of the right pressing plate 66b facing the right inner surface 22 of the indoor side frame inner surface 20, and the pressing surface of the lower pressing plate facing the lower inner surface 23 of the indoor side frame inner surface 20. The watertightness maintaining member 7 provided on the pressing surface of the left pressure plate 65b is arranged to extend along the vertical direction of the left pressure plate 65b, the watertightness maintaining member 7 provided on the pressing surface of the right pressure plate 66b is arranged to extend along the vertical direction of the right pressure plate 66b, and the watertightness maintaining member 7 provided on the pressing surface of the lower pressure plate is arranged to extend along the horizontal direction of the lower pressure plate. That is, the watertightness maintaining member 7 is concavely arranged so as to extend continuously over the pressing surface of the left pressure plate 65b, the pressing surface of the lower pressure plate, and the pressing surface of the right pressure plate 66b, which constitute concave surfaces facing the left inner surface 21, lower inner surface 23, and right inner surface 22 of the indoor side frame inner surface 20. The watertightness maintaining member 7 is attached at several locations to the pressing surface of the left pressing plate 65b, the pressing surface of the lower pressing plate, and the pressing surface of the right pressing plate 66b by an attachment means such as an adhesive. Note that the watertightness maintaining member 7 is not attached to the pressing surfaces at the boundary between the pressing surface of the left pressing plate 65b and the pressing surface of the lower pressing plate, and at the boundary between the pressing surface of the right pressing plate 66b and the pressing surface of the lower pressing plate, so that it can follow the movement of the variable plate section 61 when it is deformed.

[0018] Next, a waterproofing method and structure for the door frame 1 using the above-described waterstop plate 6 will be described. First, as shown in Figure 3(a), with the door 11 open, the convex plate surface 63 of the variable plate portion 61 of the waterstop 6 is positioned on the outdoor side. That is, the left, right, and lower ends of the concave plate surface 64 of the variable plate portion 61 are positioned opposite the doorstop 30 on the left, right, and lower ends of the door frame 1, and the watertightness maintaining members 7 provided on the pressing surfaces of the left pressing portion 65, right pressing portion 66, and lower pressing portion 67 are positioned opposite the left inner surface 21, right inner surface 22, and lower inner surface 23 of the indoor frame inner surface 20, which is the inner surface of the opening 51 of the door frame 1 (i.e., the inner surface of the opening 51 positioned indoors relative to the doorstop 30 of the door frame 1). In this case, the waterstop 6 is installed on the door frame 1 so that the watertightness maintaining member 7 provided on the pressing surface of the lower pressing portion 67 is placed on the lower inner surface 23 of the indoor side frame inner surface 20. Thereafter, when the door 11 is closed, as shown in Figure 3(b), the pressing force F1 from the closed door 11 presses against the convex plate surface 63 of the variable plate portion 61 of the waterstop 6, causing the variable plate portion 61 to elastically deform into a flat plate shape. As a result, the watertightness maintaining members 7 attached to the pressing surfaces of the left pressing portion 65, right pressing portion 66, and lower pressing portion 67 are pressed against the left inner surface 21, right inner surface 22, and lower inner surface 23 of the indoor side frame inner surface 20 by the pressing force F2. In other words, when the door 11 is closed, the variable plate portion 61 of the water stop plate 6 elastically deforms into a flat plate shape, and the watertightness maintaining members 7 attached to the pressing surfaces of the left pressing portion 65, right pressing portion 66, and lower pressing portion 67 are maintained in a pressed state against the left inner surface 21, right inner surface 22, and lower inner surface 23 of the indoor frame inner surface 20. Therefore, the waterstop plate 6 blocks the lower part of the opening 50 of the door frame 1, and the watertightness maintaining member 7, which is in a compressed state between the left inner surface 21, right inner surface 22, and lower inner surface 23 of the indoor side frame inner surface 20 and the pressing surfaces of the left pressing portion 65, right pressing portion 66, and lower pressing portion 67, forms a watertight structure of the door frame 1 in which the watertightness performance is well maintained between the left inner surface 21, right inner surface 22, and lower inner surface 23 of the indoor side frame inner surface 20 (the inner surface of the opening 51 of the door frame 1) and the pressing surfaces of the left pressing portion 65, right pressing portion 66, and lower pressing portion 67.

[0019] In other words, as shown in Figure 3(b), when the door 11 is maintained in a closed state, the indoor side panel surface 12 of the door 11 and the convex panel surface 63 of the variable panel portion 61 of the water stop plate 6 are in close contact with each other, and the variable panel portion 61 is maintained in a pressed state by the door 11. In this state, for example, the left, right, and lower end plate surfaces of the concave plate surface 64 of the variable plate portion 61 press against the airtightness maintaining member 32 of the door stop 30 and are in close contact with the outdoor edge 29 of the indoor frame inner surface 20. In addition, the extended end of the left pressing plate 65b of the left pressing portion 65 and the extended end of the right pressing plate 65b of the right pressing portion 66 are in close proximity to the flat, deformed concave plate surface 64 of the variable plate portion 61, so that the pressing surface of the left pressing plate 65b of the left pressing portion 65 faces the left inner surface 21 of the indoor frame inner surface 20 in parallel, and the pressing surface of the right pressing plate 66b of the right pressing portion 66 faces the right inner surface 22 of the indoor frame inner surface 20 in parallel. Furthermore, the left end face 67s of the lower pressure plate constituting the lower pressure portion 67 and the left inner surface 21 are parallel to each other, and the left end face 67s and the pressure surface of the left pressure plate 65b are positioned on the same vertical plane, while the right end face 67s of the lower pressure plate constituting the lower pressure portion 67 and the right inner surface 22 are parallel to each other, and the left end face 67s and the pressure surface of the right pressure plate 66b are positioned on the same vertical plane. That is, the plate surface of the lower pressure plate that constitutes the lower pressure portion 67 becomes a horizontal plane, and the watertightness maintaining member 7 positioned between the lower horizontal plate surface that forms the pressing surface of the lower pressure plate and the lower inner surface 23 of the indoor side frame inner surface 20, the watertightness maintaining member 7 positioned between the left end surface 67s of the lower pressure portion 67 and the pressing surface of the left pressure plate 65b and the left inner surface 21 of the indoor side frame inner surface 20, and the watertightness maintaining member 7 positioned between the right end surface 67s of the lower pressure portion 67 and the pressing surface of the right pressure plate 66b and the right inner surface 22 of the indoor side frame inner surface 20 become compressed by the pressing forces F1, F2, F2 generated when the door 11 is closed, as shown in Figure 3(b). Therefore, a waterproof structure of the door frame 1 is formed in which the watertight performance is well maintained between the left inner surface 21, right inner surface 22, and lower inner surface 23 of the indoor frame inner surface 20 of the door frame 1 and the pressing surfaces of the left pressing portion 65, right pressing portion 66, and lower pressing portion 67 of the water stop plate 6.

[0020] As described above, according to the water stop 6 of embodiment 1, it is possible to provide a water stop 6 that can form a water stop structure for the door frame 1 that can maintain sufficient water stop performance with a simple configuration, without having to take measures such as using a mechanism like a cremone lock to press the door against the door stop.

[0021] Embodiment 2 In embodiment 1, a waterstop 6 is exemplified in which a watertightness maintaining member 7 is provided on the pressing surface of the left pressing portion 65, the pressing surface of the lower pressing portion 67, and the pressing surface of the right pressing portion 66 facing the left inner surface 21, the lower inner surface 23, and the right inner surface 22 of the indoor side frame inner surface 20.However, as shown in Figure 4, a waterstop 6A not provided with a watertightness maintaining member 7 may also be used. In FIG. 4, the same parts as those described in FIGS. 1 to 3 of the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

[0022] In the second embodiment, as shown in Fig. 4, for example, the watertightness maintaining member 7 is provided in a concave shape so as to extend continuously over the left inner surface 21, lower inner surface 23, and right inner surface 22 of the indoor frame inner surface 20 that face the pressing surface of the left pressing portion 65, the pressing surface of the lower pressing portion 67, and the pressing surface of the right pressing portion 66 of the waterstop 6A. The watertightness maintaining member 7 is detachably attached to the left inner surface 21, lower inner surface 23, and right inner surface 22 of the indoor frame inner surface 20 by attachment means such as adhesive tape or adhesive. Then, with the door 11 open, the water stop 6A is installed on the outdoor side of the door frame 1. 4(a), the waterstop 6A is installed in the door frame 1 so that the convex plate surface 63 of the variable plate portion 61 of the waterstop 6A is positioned on the outdoor side, the left end, right end, and bottom end of the concave plate surface 64 of the variable plate portion 61 face the door stop 30 on the left end, right end, and bottom end of the door frame 1, and the pressing surfaces of the left pressing portion 65, right pressing portion 66, and bottom pressing portion 67 face the watertightness maintaining members 7 provided on the left inner surface 21, right inner surface 22, and bottom inner surface 23 of the indoor side frame inner surface 20, which is the inner surface of the opening 51 of the door frame 1. In this case, the waterstop 6A is installed in the door frame 1 so that the pressing surface of the bottom pressing portion 67 is placed on the watertightness maintaining members 7 provided on the bottom inner surface 23 of the indoor side frame inner surface 20, for example. Then, as shown in Figure 4(b), when the door 11 is closed, the convex plate surface 63 of the variable plate portion 61 of the water stop plate 6A is pressed by the door 11, causing the variable plate portion 61 to deform into a flat plate, and the pressing surfaces of the left pressing portion 65, right pressing portion 66, and lower pressing portion 67 press against the watertightness maintaining member 7 provided on the left inner surface 21, lower inner surface 23, and right inner surface 22 of the indoor side frame inner surface 20. Therefore, a waterproof structure of the door frame 1 is formed in which watertight performance is maintained between the left inner surface 21, right inner surface 22, and lower inner surface 23 of the indoor frame inner surface 20 of the door frame 1 and each pressing surface of the left pressing portion 65, right pressing portion 66, and lower pressing portion 67 of the water stop plate 6.

[0023] In other words, in embodiment 2, the watertightness maintaining member 7, which was provided on the waterstop 6 in embodiment 1, is provided on the inner surface of the opening 51 located on the indoor side of the door stop 30 of the door frame 1 (i.e., the left inner surface 21, lower inner surface 23, and right inner surface 22 of the indoor side frame inner surface 20). The waterstop 6A is configured so that the left, right and bottom ends of the concave plate surface 64 of the variable plate portion 61 face the doorstop 30 of the door frame 1, and the pressing surfaces of the left pressing portion 65, right pressing portion 66 and bottom pressing portion 67 face the inner surface of the opening 51 of the door frame 1.When the opening 51 is closed by the door 11, the convex plate surface 63 is pressed against the door 11, causing the variable plate portion 61 to deform from a curved plate into a flat plate, and the watertightness maintaining member 7 provided on the inner surface of the opening 51, which is located on the indoor side of the doorstop 30 of the door frame 1, is maintained in a pressed state by the pressing surfaces, thereby blocking the lower part of the opening 51 of the door frame 1 while maintaining watertightness. In other words, the water stop plate 6A blocks the lower portion of the opening 51 of the door frame 1, and the watertightness maintaining member 7 forms a watertight structure for the door frame 1 in which the watertightness performance between the pressing surfaces of the left pressing portion 65, right pressing portion 66, and lower pressing portion 67 of the water stop plate 6A and the inner surface of the opening 51 of the door frame 1 is well maintained.

[0024] The waterstop 6A according to the second embodiment can achieve the same effect as the waterstop 6 according to the first embodiment. That is, it is possible to provide a waterstop 6A that can configure a waterstop structure for the door frame 1 that can maintain sufficient waterstop performance with a simple configuration, without taking measures such as using a mechanism like a cremone lock to press the door against the door stop.

[0025] Embodiment 3 As shown in FIG. 5, a waterstop 6B having a configuration that does not include a pressing portion 62 but includes a variable plate portion 61 and a watertightness maintaining member 7 provided on the variable plate portion 61 may be used as the waterstop. In FIG. 5, the same parts as those described in FIGS. 1 to 3 of the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

[0026] That is, the waterstop plate 6B is configured such that the variable plate portion 61 is provided with watertightness maintaining members 7 on the left, right and lower end sides of the concave plate surface 64 that faces the door stop 30 on the left, right and lower end sides of the door frame 1. The watertightness maintaining member 7 is provided in a concave shape so as to extend continuously over the left end side, right end side and lower end side of the concave plate surface 64, for example. The watertightness maintaining member 7 is attached, for example, over the entire surface or at several locations to the left end side, right end side and bottom end side of the concave plate surface 64 by an attachment means such as an adhesive. Then, with the door 11 open, the water stop 6B is installed on the outdoor side of the door frame 1. That is, as shown in FIG. 5(a), the convex plate surface 63 of the variable plate portion 61 of the water stop plate 6B is positioned on the outdoor side, and the watertightness maintaining members 7 provided on the left end side, right end side, and bottom end side of the concave plate surface 64 of the variable plate portion 61 are installed so as to face the door stops 30 on the left end side, right end side, and bottom end side of the door frame 1. Then, as shown in Figure 5(b), when the door 11 is closed, the convex plate surface 63 of the variable plate portion 61 of the water stop plate 6B is pressed by the door 11, causing the variable plate portion 61 to deform into a flat plate, and the watertightness maintaining members 7 provided on the left, right and lower end sides of the concave plate surface 64 of the variable plate portion 61 are pressed against the door stops 30 on the left, right and lower end sides of the door frame 1.

[0027] In other words, the waterstop 6B of embodiment 3 is configured so that the watertightness maintaining members 7 provided on the left, right and lower end sides of the concave plate surface 64 are installed so as to face the door stops 30 on the left, right and lower end sides of the door frame 1, and when the opening 51 is closed by the door 11, the convex plate surface 63 is pressed against the door 11, causing the variable plate portion 61 to deform from a curved plate into a flat plate, and the watertightness maintaining members 7 provided on the left, right and lower end sides of the concave plate surface 64 are maintained in a state pressed against the door stops 30 on the left, right and lower end sides of the door frame 1, thereby blocking the lower part of the opening 51 of the door frame 1 while maintaining watertightness.

[0028] Embodiment 4 As shown in FIG. 6, a waterstop 6C configured by a variable plate portion 61 may be used without the watertightness maintaining member 7 provided on the variable plate portion 31 of the waterstop 6B of the third embodiment. In FIG. 6, the same parts as those described in FIG. 5 of the third embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

[0029] In the fourth embodiment, watertightness maintaining members 7 are provided on the door stops 30 on the left end side, right end side, and bottom end side of the door frame 1. The watertightness maintaining member 7 is provided in a concave shape so as to extend continuously across the doorstop 30 on the left end side, right end side and bottom end side of the door frame 1. The watertightness maintaining member 7 is detachably attached to the outdoor end edge 29 of the indoor side frame inner surface 20 of the doorstop 30 on the left end side, right end side and bottom end side of the door frame 1 by attachment means such as adhesive tape or adhesive. Then, with the door 11 open, the water stop 6C is installed on the outdoor side of the door frame 1. That is, as shown in Figure 6(a), the waterstop 6C is installed so that the convex plate surface 63 of the variable plate portion 61 constituting the waterstop 6C is positioned on the outdoor side, and the left, right and lower ends of the concave plate surface 64 of the variable plate portion 61 face the watertightness maintaining members 7 provided on the door stop 30 on the left, right and lower ends of the door frame 1. Thereafter, when the door 11 is closed, as shown in Figure 6(b), the convex plate surface 63 of the variable plate portion 61 constituting the water stop 6C is pressed by the door 11, causing the variable plate portion 61 to deform into a flat plate, and the left, right and lower ends of the concave plate surface 64 of the variable plate portion 61 are pressed against the watertightness maintaining members 7 provided on the door stops 30 on the left, right and lower ends of the door frame 1.

[0030] In other words, the waterstop 6C of embodiment 4 is configured so that the left, right and bottom ends of the concave plate surface 64 are installed facing the watertightness maintaining members 7 provided on the doorstops 30 on the left, right and bottom ends of the door frame 1, and when the opening 51 is closed by the door 11, the convex plate surface 63 is pressed against the door 11, causing the variable plate portion 61 to deform from a curved plate into a flat plate, and the watertightness maintaining members 7 provided on the doorstops 30 on the left, right and bottom ends of the door frame 1 are maintained in a pressed state by the variable plate portion 61 that has deformed into a flat plate, thereby blocking the lower part of the opening 51 of the door frame 1 while maintaining watertightness.

[0031] In embodiments 3 and 4, as shown in Figures 5(b) and 6(b), when the door 11 is maintained in a closed state, the indoor side panel surface 12 of the door 11 and the convex panel surface 63 of the variable panel portion 61 of the water stop plates 6B and 6C are in close contact with each other, and the variable panel portion 61 is maintained in a pressed state by the door 11. In this state, the watertightness maintaining member 7 positioned between the left end, right end, and bottom end of the concave plate surface 64 of the variable plate portion 61 and the door stop 30 is pressed by the variable plate portion 61 which is deformed into a flat plate shape, pressing against the airtightness maintaining member 32 of the door stop 30, and the watertightness maintaining member 7 and the airtightness maintaining member 32 come into close contact with each other. Therefore, the waterstop plates 6B and 6C block the lower portion of the opening 51 of the door frame 1, and the watertightness maintaining member 7 and the airtightness maintaining member 32 form a watertight structure for the door frame 1 in which the watertightness performance is well maintained between the left, right and lower end sides of the concave plate surface 64 and the door stops 30 on the left, right and lower end sides of the door frame 1.

[0032] Embodiment 5 In the third and fourth embodiments, the watertightness maintaining member 7 is provided, but the airtightness maintaining member 32 such as airtight rubber provided on the door stop 30 of the door frame 1 may also be used as the watertightness maintaining member. That is, in the case of the fifth embodiment, the waterstop 6C of the fourth embodiment is used, and the airtightness maintaining member 32 is utilized as a watertightness maintaining member. In the case of the fifth embodiment, first, the waterstop 6C is installed on the outdoor side of the door frame 1 with the door 11 in an open state. That is, the water stop plate 6C is installed so that the convex plate surface 63 of the variable plate portion 61 constituting the water stop plate 6C is positioned on the outdoor side, and the left end side, right end side, and bottom end side of the concave plate surface 64 of the variable plate portion 61 face the airtightness maintaining members 32 provided on the door stop 30 on the left end side, right end side, and bottom end side of the door frame 1. Thereafter, when the door 11 is closed, the convex plate surface 63 of the variable plate portion 61 constituting the water stop 6C is pressed by the door 11, causing the variable plate portion 61 to deform into a flat plate, and the left, right and bottom ends of the concave plate surface 64 of the variable plate portion 61 come into close contact with the airtightness maintaining members 32 provided on the doorstops 30 on the left, right and bottom ends of the door frame 1, so that the airtightness maintaining members 32 function as watertightness maintaining members, thereby forming a watertight structure for the door frame 1 in which the watertightness performance between the left, right and bottom ends of the concave plate surface 64 and the doorstops 30 on the left, right and bottom ends of the door frame 1 is well maintained.

[0033] In addition, the water stop plate of the present invention, which is installed to block the lower portion of the opening 51 formed by being surrounded by the indoor frame inner surface 20 of the door frame 1, is equipped with a variable plate portion 61 formed by a curved plate having a convex plate surface 63 and a concave plate surface 64, with the plate portion between the left and right ends protruding in one direction, and the variable plate portion 61 is installed so that the left end side, right end side and lower end side of the concave plate surface 64 face the door stop 30 of the door frame 1, and when the opening 51 is closed by the door 11, the convex plate surface 63 is pressed against the door 11, causing the variable plate portion 61 to deform from a curved plate into a flat plate, thereby blocking the lower portion of the opening 51 of the door frame 1 while maintaining watertightness. [Explanation of symbols]

[0034] 1 Door frame, 6, 6A, 6B, 6C Waterstop, 7 Watertightness maintaining member, 11 Door, 20 Indoor frame inner surface (inner surface of door frame opening), 30 Door stop, 51 Door frame opening, 61 variable plate portion, 62 pressing portion, 63 convex plate surface, 64 concave plate surface, 65 left pressing part, 66 right pressing part, 67 lower pressing part.

Claims

1. In a water stop plate installed to close the lower part of the door frame opening, a variable plate portion configured by a curved plate having a convex plate surface and a concave plate surface projecting in one direction between the left end and the right end, and configured to be deformable into a flat plate by elastic deformation of the plate; The curved plate constituting the variable plate portion is formed to a size such that the left end side, right end side, and bottom end side of the concave plate surface face the door stop of the door frame and can block the bottom end side of the opening of the door frame from the outside, The left end, right end, and bottom end of the concave plate surface of the curved plate constituting the variable plate portion are installed so as to face the door stop of the door frame, and when the curved plate surface receives a force from the door closing the opening of the door frame, the variable plate portion deforms from the curved plate into a flat plate to close the lower part of the opening of the door frame. The left end side, the right end side, and the lower end side of the concave plate surface are provided with pressing portions for pressing the watertightness maintaining member, the left pressing portion provided on the left end side includes a left support plate that extends from a position along the left end of the concave plate surface at a certain distance from the left end of the concave plate surface toward the left end, away from the concave plate surface; and a left pressing plate that has a pressing surface that extends from the extended end of the left support plate in a direction approaching the left end and the concave plate surface, the right pressing portion provided on the right end side includes a right support plate that extends from a position along the right end of the concave plate surface at a certain distance from the right end toward the right end, away from the concave plate surface, and a right pressing plate having a pressing surface that extends from the extended end of the right support plate in a direction approaching the right end and the concave plate surface, the lower pressing portion provided on the lower end side includes a lower pressing plate having a pressing surface provided at a position along the lower end and spaced a predetermined distance from the lower end of the concave plate surface, The watertightness maintaining member is provided on each pressing surface of each pressing portion installed so as to face the inner surface of the door frame opening located indoors relative to the door stop of the door frame, The convex plate surface of the curved plate that constitutes the variable plate portion, which is installed so that the left, right, and lower ends of the concave plate surface face the doorstop of the door frame, is subjected to force from the door closing the opening of the door frame, causing the variable plate portion to deform from a curved plate into a flat plate, and the watertightness maintaining members provided on each pressing surface of each pressing portion are maintained in a state pressed against the inner surface of the opening of the door frame, thereby closing the lower part of the opening of the door frame while maintaining watertightness.

2. A water stop plate installed to close the lower portion of the opening in a door frame, a variable plate portion configured by a curved plate having a convex plate surface and a concave plate surface projecting in one direction between the left end and the right end, and configured to be deformable into a flat plate by elastic deformation of the plate; The curved plate constituting the variable plate portion is formed to a size such that the left end side, right end side, and bottom end side of the concave plate surface face the door stop of the door frame and can block the bottom end side of the opening of the door frame from the outside, The left end, right end, and bottom end of the concave plate surface of the curved plate constituting the variable plate portion are installed so as to face the door stop of the door frame, and when the curved plate surface receives a force from the door closing the opening of the door frame, the variable plate portion deforms from the curved plate into a flat plate to close the lower part of the opening of the door frame. The left end side, the right end side, and the lower end side of the concave plate surface are provided with pressing portions for pressing the watertightness maintaining member, the left pressing portion provided on the left end side includes a left support plate that extends from a position along the left end of the concave plate surface at a certain distance from the left end of the concave plate surface toward the left end, away from the concave plate surface; and a left pressing plate that has a pressing surface that extends from the extended end of the left support plate in a direction approaching the left end and the concave plate surface, the right pressing portion provided on the right end side includes a right support plate that extends from a position along the right end of the concave plate surface at a certain distance from the right end toward the right end, away from the concave plate surface, and a right pressing plate having a pressing surface that extends from the extended end of the right support plate in a direction approaching the right end and the concave plate surface, the lower pressing portion provided on the lower end side includes a lower pressing plate having a pressing surface provided at a position along the lower end and spaced a predetermined distance from the lower end of the concave plate surface, The convex plate surface of the curved plate that constitutes the variable plate portion, which is installed so that the left, right, and lower ends of the concave plate surface face the doorstop of the door frame, receives force from the door closing the opening of the door frame, causing the variable plate portion to deform from a curved plate into a flat plate, and each pressing surface of each pressing portion is maintained in a state pressing against the watertightness maintaining member provided on the inner surface of the opening located inside the door frame rather than the doorstop of the door frame, thereby blocking the lower portion of the opening of the door frame while maintaining watertightness.

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