Waterproofing structure and waterproofing method for opening frames

Abstract

Waterproofing is applied to the gap between the opening frame located below the soffit material and the building. [Solution] The waterproofing structure for the opening frame comprises a base material 14 attached to the opening of the building 10, an opening frame 20 fixed to the base material 14 with the base material 14 protruding towards the outside, a soffit material 30 positioned above the opening frame 20 with its end face facing the outdoor side of the base material 14, and a dry sealant 50 that is in contact with the upper surface of the opening frame 20 and sandwiched between the end face and the outdoor side.

Description

Technical Field

[0001] The present disclosure relates to a water stop structure for an opening frame and a method for water stopping of an opening frame.

Background Art

[0002] The following Patent Document 1 shows the configuration of an entrance door. In this entrance door, a door frame is disposed at a position close to the eaves member. This door frame is supported by the building structure, but the water stop structure around the door frame is not clarified.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the configuration in which an opening frame (door frame) is disposed at a position close to the eaves member as shown in the above Patent Document 1, a hanging wall cannot be constructed above the opening frame. Therefore, it is difficult to lay a sealing material.

[0005] In consideration of the above facts, an object of the present disclosure is to provide a water stop structure and a water stop method for water stopping between an opening frame below the eaves member and a building.

Means for Solving the Problems

[0006] The water stop structure of the opening frame according to the first aspect includes a base material attached to an opening of a building, an opening frame fixed to the base material in a state of protruding toward the outside of the building with respect to the base material, an eaves member disposed above the opening frame and having an end face facing an outer side surface of the base material on the outside of the building, and a dry sealing material contacting an upper surface of the opening frame and disposed between the end face and the outer side surface.

[0007] In the first embodiment of the waterproofing structure for the opening frame, the soffit material is positioned above the opening frame. A dry sealant is then sandwiched between the end face of the soffit material and the base material, in contact with the upper surface of the opening frame.

[0008] Therefore, the gaps between the opening frame and the soffit material, between the opening frame and the underlayment material, and between the soffit material and the underlayment material are sealed. This prevents rainwater from entering the building. In other words, the gap between the opening frame below the soffit material and the building can be sealed.

[0009] Furthermore, if, for example, the soffit material and the opening frame are in close proximity, it is difficult to insert the nozzle into the gap, making it difficult to apply "wet" sealant. In contrast, this embodiment uses a dry sealant, so the sealant can be laid before the soffit material is installed. Therefore, it is easier to ensure waterproofing performance compared to when a wet sealant is used.

[0010] The watertight sealing structure for the opening frame of the second embodiment is as follows: In the watertight sealing structure for the opening frame of the first embodiment, the opening frame is provided with a fixing piece that protrudes upward, the fixing piece and the outdoor side surface are fixed together with a watertight sealing sheet in between using screws, and the dry sealing material covers the head of the screw.

[0011] In the second embodiment of the waterproofing structure for the opening frame, the fixing piece of the opening frame and the outdoor side surface of the base material are screw-fixed with a waterproofing sheet in between. This prevents rainwater and other liquids from entering the interior of the building through the screw holes between the opening frame and the base material.

[0012] The third embodiment of the method for waterproofing an opening frame comprises the steps of: attaching a base material to the opening of a building; fixing the opening frame to the base material in a state where it is projecting outwards toward the outside of the base material; laying a dry sealant on the upper surface of the opening frame; and arranging a soffit material above the opening frame and sandwiching the dry sealant between the end face of the soffit material and the outdoor side surface of the base material in contact with the upper surface of the opening frame.

[0013] In the third embodiment of the method for waterproofing the opening frame, soffit material is placed above the opening frame. Then, a dry sealant is sandwiched between the end face of the soffit material and the base material, in contact with the upper surface of the opening frame.

[0014] Therefore, the gaps between the opening frame and the soffit material, between the opening frame and the base material, and between the soffit material and the base material are sealed. This prevents rainwater from entering the interior of the building.

[0015] Furthermore, if, for example, the soffit material and the opening frame are in close proximity, it is difficult to insert the nozzle into the gap, making it difficult to apply "wet" sealant. In contrast, this embodiment uses a dry sealant, so the sealant can be laid before the soffit material is installed. Therefore, it is easier to ensure waterproofing performance compared to when a wet sealant is used. [Effects of the Invention]

[0016] According to this disclosure, it is possible to seal off the gap between the opening frame located below the soffit material and the building. [Brief explanation of the drawing]

[0017] [Figure 1] This is a vertical cross-sectional view showing a watertight structure and mounting structure of an opening frame according to an embodiment of the present disclosure. [Figure 2] (A) is a cross-sectional view showing the state in which the base material is attached to the opening of the building, (B) is a cross-sectional view showing the state in which the opening frame is fixed to the base material, and (C) is a cross-sectional view showing the state in which the dry sealant is laid. [Modes for carrying out the invention]

[0018] The watertight structure, watertight method, and mounting structure of the opening frame according to the embodiments of this disclosure will be described below with reference to the drawings. Components indicated by the same reference numerals in each drawing are considered to be the same component. However, unless otherwise specified in the specification, each component is not limited to one, and there may be multiple such components.

[0019] In addition, for the components and reference numerals that overlap in each drawing, the description may be omitted. Note that the present disclosure is not limited to the following embodiments, and within the scope of the object of the present disclosure, it is possible to omit components, replace with different components, combine and use one embodiment and various modifications, etc., and make appropriate changes and implement.

[0020] <Waterstop structure of the opening frame> In FIG. 1, a waterstop structure and a mounting structure of an opening frame according to an embodiment of the present disclosure are shown in a vertical cross-section. This waterstop structure is a waterstop structure (a structure for preventing water leakage from the opening frame 20 to the inside of the building 10) between the opening frame 20, which is the upper frame of the opening, and the building 10. On the outdoor side of the opening frame 20, the eaves member 30 is arranged, and the vertical distance between the opening frame 20 and the eaves member 30 is small.

[0021] That is, this waterstop structure is applied to the opening frame of a full-height door or a full-height window where the height of the opening reaches near the eaves at the opening that is the boundary between the outdoor space and the indoor space under the entrance porch or the eaves. As an example of such an opening frame, FIG. 1 shows an opening frame 20 to which the entrance door SD is attached.

[0022] In the following description, in FIG. 1, the direction indicated by OUT (the outdoor side of the opening frame 20) may be expressed as the front side or the front, etc., and the direction indicated by IN (the indoor side of the opening frame 20) may be expressed as the rear side or the rear, etc.

[0023] (Base material) A base material 14 is attached to the body 12 of the building 10. The base material 14 is formed into a substantially rectangular shape by bending a metal plate such as a steel plate or an aluminum plate. The base material 14 is a long member whose axial direction is along the front-back direction of the paper of FIG. 1, and is attached from below to the portion of the body 12 that forms the opening.

[0024] (Coating material) A coating material 40 is adhesively fixed to the lower surface of the base material 14. The coating material 40 is formed using, for example, plywood, and the lower surface is rougher than the lower surface of the base material 14.

[0025] (Opening frame) The opening frame 20 is the door frame on which the entrance door SD is installed, and is made of metal such as steel or aluminum. The opening frame 20 is the upper frame of the door frames arranged on all four sides (top, bottom, left, and right) of the entrance door SD. The gap between the opening frame 20 and the entrance door SD is sealed with a gasket or the like (not shown).

[0026] The opening frame 20 is positioned below the base material 14 and projecting outwards from the base material towards the outdoors. The portion positioned directly below the base material 14 is referred to as the rear portion 22 of the opening frame 20, and the portion projecting outwards from the base material towards the outdoors is referred to as the front portion 24. The rear portion 22 and the front portion 24 are integrally formed.

[0027] (Mounting structure for opening frame) A plate-shaped fixing piece 26 protruding upward is formed on the front portion 24 of the opening frame 20. The fixing piece 26 is positioned opposite the outdoor side surface of the base material 14 and is fixed to the base material 14 from the front with a screw N1 (face fixing screw).

[0028] The rear portion 22 of the opening frame 20 is fixed to the base material 14 from below with screws N2 (recessed fixing screws). Screws N2 are screws that penetrate the covering material 40 and the base material 14 from below. The rear portion 22 has pre-formed holes for inserting screws N2. Therefore, the worker inserts the screw N2 into the holes and starts the screwing process by placing the tip of the screw N2 against the covering material 40.

[0029] (Eave roof material) The soffit material 30 is a finishing material for the eaves ceiling outdoors and is fixed to the building frame 12 of the building 10 via a base material (not shown). The end of the soffit material 30 is positioned above the front part 24 of the opening frame 20. That is, the end of the soffit material 30 is inserted into the gap between the building frame 12 of the building 10 and the front part 24.

[0030] The end face 32 of the soffit material 30 is positioned opposite the fixing piece 16 of the opening frame 20 and the outdoor side surface of the base material 14 to which the fixing piece 16 is fixed.

[0031] (Three-sided frame) The three-sided frame 60 is an indoor finishing material positioned behind the opening frame 20, and is positioned above and to the left and right of the entrance door SD. The top surface of the three-sided frame 60 is in contact with the bottom surface of the covering material 40. The front end surface of the three-sided frame 60 is in contact with the rear end surface of the opening frame 20.

[0032] Furthermore, if this disclosure is applied to the opening frame of a window rather than the opening frame 20 of an entrance door SD, a four-sided frame can be installed instead of this three-sided frame 60.

[0033] (Waterproof structure) A dry sealant 50 and a waterproof sheet 52 are placed between the opening frame 20 and the building 10.

[0034] The dry sealant 50 is made of, for example, EPDM (ethylene propylene rubber), and is positioned in contact with the upper surface of the front portion 24 of the opening frame 20, and sandwiched between the end face 32 of the soffit material 30 and the outdoor side surface of the base material 14.

[0035] At this position, the dry sealant 50 is adhered to the fixing piece 26 of the opening frame 20, which is fixed to the outdoor side of the base material 14. The dry sealant 50 also covers the fixing piece 26 and the screw head of the screw N1 that fixes the fixing piece 26 to the base material 14.

[0036] The waterproofing sheet 52 is a sheet material made of, for example, polyvinyl chloride or EPDM, and is positioned sandwiched between the fixing piece 26 and the outdoor side surface of the base material 14. The waterproofing sheet 52 is laid by adhering it from the outdoor side surface of the base material 14 to the underside of the covering material 40.

[0037] <Method for sealing opening frames> The waterproofing structure for the opening frame is constructed using the following procedure. First, as shown in Figure 2(A), a base material 14 is attached to the frame 12 that forms the opening of the building 10. A covering material 40 is then adhered to the underside of the base material 14. A waterproofing sheet 52 is then adhered from the outdoor side of the base material 14 to the underside of the covering material 40.

[0038] Next, as shown in Figure 2(B), the opening frame 20 is fixed to the base material 14 in a position where it protrudes towards the outdoor side of the base material 14. At this time, the fixing piece 26 of the opening frame 20 is fixed to the outdoor side of the base material 14 using screws N1. Then, the rear part 22 of the opening frame 20 is fixed to the underside of the covering material 40 and the base material 14 using screws N2.

[0039] Next, as shown in Figure 2(C), a dry sealant 50 is laid on the upper surface of the opening frame 20. At this time, the dry sealant 50 is positioned so as to cover the screw head of the screw N1 and is adhered to the fixing piece 26 of the opening frame 20.

[0040] Then, the soffit material 30 is inserted into the gap between the building frame 12 and the front section 24 of the building 10. The end face 32 of the soffit material 30 is positioned to be in contact with the dry sealant 50, and the dry sealant 50 is sandwiched between the soffit material 30 and the fixing piece 26. At this time, the end face 32 of the soffit material 30 may press against the dry sealant 50.

[0041] Next, as shown in Figure 1, the three-sided frame 60 is attached. At this time, the three-sided frame 60 is positioned so that its upper surface is in contact with the lower surface of the covering material 40, and its front end surface is in contact with the rear end surface of the opening frame 20.

[0042] <Mechanism and Effects> (Water-stopping effect) In the waterproofing structure and waterproofing method for an opening frame according to the embodiment of this disclosure, a soffit material 30 is positioned above the opening frame 20. A dry sealant 50 is sandwiched between the end face 32 of the soffit material 30 and the base material 14, in contact with the upper surface of the opening frame 20.

[0043] Therefore, water is sealed between the opening frame 20 and the soffit material 30, between the opening frame 20 and the base material 14, and between the soffit material 30 and the base material 14. This prevents rainwater from entering the interior of the building.

[0044] Furthermore, the dry sealant 50 is bonded to the fixing piece 26 of the opening frame 20 between the end face 32 of the soffit material 30 and the base material 14, and is positioned to cover the screw head of the screw N1. This prevents rainwater from entering the inside of the opening frame 20 through the fixing piece 26 and the screw holes in the base material 14. In other words, it is possible to stop water from entering between the opening frame 20 located below the soffit material 30 and the building 10.

[0045] Furthermore, in this embodiment, since the soffit material 30 and the opening frame 20 are in close proximity, it is difficult to insert a caulking nozzle or the like into the gap between them. For this reason, "wet" sealants are difficult to apply. In contrast, since a dry sealant 50 is used in this embodiment, as shown in Figure 2(C), the dry sealant 50 can be laid before the soffit material 30 is installed. For this reason, it is easier to ensure waterproofing performance compared to when a wet sealant is used.

[0046] Furthermore, in this waterproofing structure, the fixing piece 26 of the opening frame 20 and the outdoor side surface of the base material 14 are fixed together with a waterproofing sheet 52 in between using screws N1. This prevents rainwater and other liquids from entering the interior through the screw holes between the opening frame 20 and the base material 14.

[0047] (Effects of mounting structure using covering material) In the mounting structure of the opening frame 20 according to the embodiment of this disclosure, the covering material 40 is adhered to the lower surface of the base material 14.

[0048] Therefore, when holding (or positioning) the opening frame 20 as a mounting member below the base material 14, the screw N2 is pressed against the covering material 40. Since the covering material 40 has a rougher surface than the base material 14, the tip of the screw N2 is less likely to slip sideways compared to when the screw N2 is pressed directly against the base material 14. As a result, the opening frame 20 is less likely to shift position.

[0049] Furthermore, the screw N2 penetrates the covering material 40 and the base material 14 from below. In other words, the screwing operation (screw driving operation) of the screw N2 is an upward operation. Such upward operation is less efficient than downward or sideways operation, but according to this embodiment, the deterioration of workability caused by upward operation can be suppressed.

[0050] Thus, according to the mounting structure of this embodiment, the driving performance of the screw N2 can be improved compared to a configuration without the covering material 40.

[0051] Furthermore, in this mounting structure, the base material 14 is metal, and the covering material 40 is plywood. Plywood has a rougher surface compared to metal with a typical finish, and is also softer than typical metal. At the very least, it is rougher and softer than the base material 14. Therefore, compared to the case where a material harder than plywood is used as the covering material, the tip of the screw N2 penetrates more easily, improving the driving performance.

[0052] Furthermore, in this mounting structure, the three-sided frame 60 is positioned in contact with the underside of the covering material 40. That is, the covering material 40 can be used as a positioning guide when installing the three-sided frame 60. For this reason, the ease of installation is higher compared to when the covering material 40 is not present.

[0053] <Other Embodiments> In the above embodiment, a waterproof sheet 52 is sandwiched between the fixing piece 26 of the opening frame 20 and the outdoor side surface of the base material 14, but the embodiments of this disclosure are not limited to this. For example, the waterproof sheet 52 may be omitted. Even if the waterproof sheet 52 is omitted, the gap between the opening frame 20 and the building 10 can be sealed with the dry sealant 50.

[0054] Furthermore, in the above embodiment, the base material 14 is metal and the covering material 40 is plywood, but the embodiments of this disclosure are not limited to these. Any combination is acceptable as long as the covering material has a rougher surface than the base material. For example, both the base material 14 and the covering material 40 may be wood.

[0055] Furthermore, although the above embodiment shows a covering material 40 laid on the lower surface of the base material 14, the embodiments of this disclosure are not limited to this. The watertightness is not affected even if such a covering material 40 is omitted. Thus, this disclosure can be implemented in various forms. [Explanation of symbols]

[0056] 10 Buildings 14. Underlayment 20 Opening frame 30 Eave ceiling material 50 Dry sealant 52 Waterproof sheet

Claims

1. Substrate material installed in the openings of the building, With the aforementioned base material protruding towards the exterior, the opening frame fixed to the base material, A soffit material positioned above the opening frame, with its end face facing the outdoor side of the base material, A dry sealing material is positioned in contact with the upper surface of the opening frame and sandwiched between the end face and the outdoor side surface, A watertight structure for an opening frame equipped with the following features.

2. The aforementioned opening frame is equipped with a fixing piece that protrudes upward, The fixing piece and the outdoor side surface are fixed together with a waterproof sheet in between using screws. The dry sealant covers the head of the screw. The watertight structure for the opening frame according to claim 1.

3. The process of installing base materials in the openings of the building, The process involves fixing the opening frame to the base material in a state where it is projected outwards towards the exterior of the base material, The steps include laying a dry sealing material on the upper surface of the opening frame, The process involves placing the soffit material above the opening frame, and, while in contact with the upper surface of the opening frame, sandwiching the dry sealant between the end face of the soffit material and the outdoor side surface of the base material. A method for sealing an opening frame equipped with a waterproofing device.

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