Opening upper fitting structure

The use of a suppression member like a vertical auxiliary furring strip addresses the issue of mortar seepage and water accumulation in upper frame portions, ensuring water flows down the frame sides and prevents building ingress.

JP2025151395APending Publication Date: 2025-10-09DAIWA HOUSE INDUSTRY CO LTD +1
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Patent Information

Application Number
JP2024052796
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-03-28
Publication Date
2025-10-09

AI Technical Summary

Technical Problem

In existing upper opening fitting structures, mortar seeps into the upper frame portion of window frames, acting as a weir and allowing water to enter the building, particularly where screws or nails are improperly sealed, and horizontal furring strips can also allow water to flow downward and accumulate, leading to potential interior leaks.

Method used

A suppression member, such as a vertical auxiliary furring strip with an H-shaped cross section, is fixed to the upper frame portion to inhibit mortar from seeping and acts as a dam, preventing water accumulation by directing it to flow down the side of the frame.

Benefits of technology

Prevents mortar from entering the upper frame portion, thereby stopping water accumulation and ensuring it flows down the side of the frame, effectively blocking water ingress into the building.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide an opening upper fitting structure capable of suppressing water from entering a room at the upper side of the opening.SOLUTION: The opening upper fitting structure has a fixed fin portion 11 rising from an upper frame portion 10a of a window frame 10 that is fitted into the opening and fixed to the building side, a lath mesh 17 fixed to the furring strips (14A, 14B, 14C) arranged on the fixed fin portion 11, and mortar 18 applied to the lath mesh 17. An inhibiting member 2 that inhibits mortar 18 from getting onto the upper frame portion 10a on the outdoor side of the fixed fin portion 11 is arranged on the upper frame portion 10a.SELECTED DRAWING: Figure 3
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Description

[Technical Field]

[0001] The present invention relates to a fitting structure for an upper opening that is provided with a water leakage prevention measure. [Background technology]

[0002] In the upper opening fitting structure 9 shown in Figures 6, 7(A), and 7(B), fixed fins 91 on the upper frame portion 90a of a building window frame 90 are fixed to building battens 93 with screws 92. Horizontal furring strips 94 are fixed to the building battens 93 on the fixed fins 91 with nails 95, and metal lath 97 is fastened to the horizontal furring strips 94 with staples 96. Mortar 98 is applied to the metal lath 97, and tiles or the like are attached to this mortar. Water that runs down the breathable waterproof sheet 99, which serves as a waterproofing line, and reaches the upper frame portion 90a flows over this upper frame portion 90a and then runs down the side of the window frame 90 to fall downward.

[0003] Patent Document 1 discloses an exterior wall structure that consists of a pillar, a sash, side panels arranged on both sides of the sash and fixed to the pillar, a flat eaves arranged on the top of the sash and fixed to the pillar, a water return arranged on the bottom of the sash and fixed to the pillar, a plywood board fixed to the pillar, a waterproof sheet stretched over the plywood board, a mesh board with numerous holes formed and with shelf pieces protruding from the backside and fixed to the plywood board, and mortar applied to the mesh board, with a space extending vertically formed between the mesh board and the plywood board. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-227137 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-described upper opening fitting structure 9, mortar 98 seeps into the upper frame portion 90a of the window frame 90, which is the lower end of the lath mesh 97, and this mortar 98 acts as a weir 98A, trapping water, which may then enter the interior of the building through areas where screws or nails have been driven in incorrectly, or areas where water is not completely sealed, such as pinholes. Furthermore, since the horizontal furring strips 94 also receive water, if there are any areas where the horizontal furring strips 94 and the moisture-permeable waterproof sheet 99 are not completely sealed, water will flow downward locally from these incomplete areas, and if there is a weir 98A in the area where the water has flowed in, this area will be prone to collecting water.

[0006] In view of the above circumstances, an object of the present invention is to provide an opening upper fitting structure that can prevent water from entering the interior of a building at the upper side of the opening. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the opening upper fitting structure of this invention is an opening upper fitting structure in which a fixed fin portion rising from the upper frame portion of a frame body that is fitted into the opening is fixed to the building side, a mesh material is fixed to a furring strip arranged on the fixed fin portion, and mortar is applied to the mesh material, and is characterized in that an inhibitor member is arranged on the upper frame portion on the outdoor side of the fixed fin portion to inhibit the mortar from seeping onto the upper frame portion.

[0008] With the above configuration, the suppression member prevents the mortar from entering the upper frame portion, so that the mortar acts as a dam to prevent water from accumulating on the upper frame portion.As designed, water that falls from above and reaches the upper frame portion is allowed to flow over the upper frame portion and then run down the side of the frame body, preventing water from entering the interior of the building.

[0009] The suppressing member may be an auxiliary furring strip used as the furring strip. This eliminates the need to newly design the suppressing member, thereby reducing construction costs.

[0010] The auxiliary furring strip has an H-shaped cross section with two opposing surface portions connected at the center by a connecting portion, and may be arranged so that one surface portion of the two surface portions is positioned on the upper frame portion, or so that the connecting portion faces the upper frame portion. The auxiliary furring strip may also have an adhesive layer on the surface portions.

[0011] The lower ends of the vertical furring strips serving as the furring strips may be located close to the fixed fins, while the lower ends of the vertical auxiliary furring strips serving as the furring strips may be located away from the fixed fins, and the horizontal furring strips serving as the furring strips may be provided with a gap between the lower ends of the vertical auxiliary furring strips and the fixed fins. In this way, water flowing on the horizontal furring strips is dispersed and flows into the gaps, preventing water from accumulating in a local area and leaking into the interior of the building.

[0012] The lower ends of the vertical furring strips serving as the furring strips may be located close to the fixed fins, while the lower ends of the vertical auxiliary furring strips serving as the furring strips may be located away from the fixed fins, and the vertical furring strips serving as the furring strips may be provided between the lower ends of the vertical auxiliary furring strips and the fixed fins. In this way, since no horizontal furring strips are interposed, water from above can reach the upper frame portion directly.

[0013] The lower ends of the vertical furring strips serving as the furring strips may be positioned close to the fixed fins, and the lower ends of the vertical auxiliary furring strips serving as the furring strips may also be positioned close to the fixed fins. In this way, since there are no horizontal furring strips interposed, water from above can reach the upper frame portion directly.

[0014] In these opening upper fitting structures, the upper frame portion of the frame body fitted into the opening may be the upper frame portion of a window frame, or the upper frame portion of the frame body fitted into the opening may be the upper frame portion of a rain shutter located above the window frame. [Effects of the Invention]

[0015] With the present invention, the suppression member prevents mortar from entering the upper frame portion, so that the mortar acts as a dam to prevent water from accumulating on the upper frame portion, allowing water to flow down the side portions of the frame body as designed, thereby preventing water from entering the interior of the building. [Brief explanation of the drawings]

[0016] [Figure 1] 1A and 1B are diagrams showing an upper opening fitting structure of an embodiment, in which FIG. 1A is a schematic perspective explanatory view, and FIG. 1B is a schematic front explanatory view. [Figure 2] 1A and 1B are diagrams showing an upper opening fitting structure of an embodiment, in which FIG. 1A is an explanatory diagram of a horizontal cross section, and FIG. 1B is an explanatory diagram of a vertical cross section. [Figure 3] FIG. 2B is a partially enlarged view of FIG. [Figure 4] 1A and 1B are explanatory front views each showing an outline of an upper opening fitting structure according to another embodiment. [Figure 5] An explanatory diagram of a vertical cross section showing a storm shutter to which another embodiment of the opening upper fitting structure is applied. [Figure 6] FIG. 10 is an explanatory diagram of a vertical cross section showing a conventional fitting structure for an upper opening portion. [Figure 7] 1A and 1B are diagrams showing a conventional fitting structure for an upper opening, in which FIG. 1A is a schematic perspective explanatory view, and FIG. 1B is a schematic front explanatory view. DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in Figures 1(A), 1(B), 2(A), 2(B), and 3, in an upper opening fitting structure 1 of this embodiment, a fixed fin portion 11 on an upper frame portion 10a of a window frame 10 (frame body) fitted into a building opening is fixed to a building batten 13 with screws 12. Horizontal furring strips 14A, vertical furring strips 14B, and vertical auxiliary furring strips 14C are fixed to the building batten 13 or the like on the fixed fin portion 11 with nails 15 or adhesive. A metal lath mesh 17 (mesh material) is fastened to the horizontal furring strips 14A and vertical furring strips 14B with staples 16. Mortar 18 is applied to the metal lath mesh 17, and tiles or the like are attached to the mortar. Note that the vertical auxiliary furring strips 14C simply support the metal lath mesh 17; the metal lath mesh 17 is not fastened to the vertical auxiliary furring strips 14C with staples 16. The vertical auxiliary furring strips 14C may be placed not only above the opening in the building, but also on the left and right sides of the opening. Also, a moisture-permeable waterproof sheet 19 is attached as a waterproof line, and water that runs down this moisture-permeable waterproof sheet 19 and reaches the upper frame portion 10a flows over this upper frame portion 10a and then runs down the side of the window frame 10.

[0018] A suppression member 2 that suppresses mortar 18 from getting onto the upper frame portion 10a is arranged on the outdoor side of the fixed fin portion 11. In this embodiment, a vertical auxiliary furring strip 14C is used as the suppression member 2.

[0019] The vertical auxiliary furring strips 14C have an H-shaped cross section with the two opposing surfaces connected at the center by a connecting portion, and the suppression member 2 made up of this vertical auxiliary furring strip 14C is positioned so that one of the surfaces is positioned on the upper frame 10a. The suppression member 2 made up of the vertical auxiliary furring strips 14C has an adhesive layer on the surface, and is adhesively fixed to the upper frame 10a or the fixed fin 11 by this adhesive layer.

[0020] 1(B), the lower end of the vertical furring strip 14B is located close to the fixed fin portion 11, while the lower end of the vertical auxiliary furring strip 14C is located away from the fixed fin portion 11, and the horizontal furring strip 14A is located with a gap G (for example, about 30 mm to 60 mm) between it and the vertical furring strip 14B between the lower end of the vertical auxiliary furring strip 14C and the fixed fin portion 11. There is also a gap between the lower end of the vertical auxiliary furring strip 14C and the upper surface of the horizontal furring strip 14A.

[0021] With the above configuration, the suppression member 2 prevents mortar 18 from entering onto the upper frame portion 10a, thereby preventing water from accumulating on the upper frame portion 10a by acting as a dam with mortar 18. As designed, water that flows down the waterproofing line and reaches the upper frame portion 10a flows over this upper frame portion 10a, then flows down the side of the window frame 10, preventing water from entering the interior of the building.

[0022] When the vertical auxiliary furring strips 14C are used as the restraining members 2, it is not necessary to newly design the restraining members 2, which reduces construction costs. Of course, the window frame upper fitting structure 1 is not limited to a structure in which the existing vertical auxiliary furring strips 14C or the like are used as the restraining members 2, and the restraining members 2 may also be newly designed.

[0023] The vertical auxiliary furring strips 14C have an H-shaped cross section, and when one of the two surfaces is positioned on the upper frame portion 10a and the surface is fixed using the adhesive layer, the suppressing member 2 made of the vertical auxiliary furring strips 14C can be stably attached to the upper frame portion 10a by the adhesive layer. Note that the suppressing member 2 (vertical auxiliary furring strips 14C) is not limited to an H-shaped cross section and may be made of an L-shaped cross section member, a U-shaped cross section member, a square pipe, or the like. Furthermore, in a configuration using a suppressing member 2 with an H-shaped cross section, the connecting portion of the H-shaped cross section may be positioned facing the upper frame portion 10a.

[0024] In this embodiment, the lower ends of the vertical furring strips 14B are located close to the fixed fins 11, while the lower ends of the vertical auxiliary furring strips 14C are located away from the fixed fins 11, and horizontal furring strips 14A are placed between the lower ends of the vertical auxiliary furring strips 14C and the fixed fins 11, dispersing the multiple gaps G formed between the horizontal furring strips 14A and the vertical furring strips 14B. By dispersing the multiple gaps G in this way, localized pooling of water on the horizontal furring strips 14A is suppressed, and water drops from the gaps G into the upper frame 10a and flows from the upper frame 10a to the sides of the window frame 10, preventing water from entering the interior of the building.

[0025] The upper opening fitting structure 1 is not limited to the above-described structure. For example, as shown in FIG. 4(A), the lower end of the vertical auxiliary furring strip 14C may be located away from the fixed fin portion 11, and the vertical furring strip 14B may be located between the lower end of the vertical auxiliary furring strip 14C and the fixed fin portion 11. Alternatively, as shown in FIG. 4(B), the lower end of the vertical furring strip 14B may be located close to the fixed fin portion 11, and the lower end of the vertical auxiliary furring strip 14C may also be located close to the fixed fin portion 11. Such a structure does not have horizontal furring strips 14A, and allows water from above to reach the upper frame portion 10a and flow from the upper frame portion 10a to the side of the window frame 10, preventing water from entering the interior of the room.

[0026] Furthermore, in the above-mentioned opening upper fitting structure 1, the window frame 10 is fitted into the opening of the building and the suppression member 2 is placed on the upper frame portion 10a, but this is not limited to this, and as shown in Figure 5, the suppression member 2 may also be placed on the upper frame portion 10a of the shutter storm shutter 10A located above the window frame 10 that is fitted into the opening of the building.

[0027] Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same scope as the present invention or within an equivalent scope. [Explanation of symbols]

[0028] 1: Upper opening fitting structure 2: Restraining member 10: Window frame 10A: Shutter shutter 10a: Upper frame part 11: Fixed fin part 12: Screw 13: Building crosspiece 14A: Horizontal furring strip 14B: Vertical furring strip 14C: Vertical auxiliary furring strip 15:Nail 16: Staple 17: Lass Net 18: Mortar 19: Breathable waterproof sheet G: Gap

Claims

1. An opening upper fitting structure in which a fixed fin portion rising from the upper frame portion of a frame body that is fitted into the opening is fixed to the building side, a mesh material is fixed to a furring strip arranged on the fixed fin portion, and mortar is applied to the mesh material, and an inhibitor member that inhibits the mortar from entering onto the upper frame portion on the outdoor side of the fixed fin portion is arranged on the upper frame portion.

2. 2. The upper opening fitting structure according to claim 1, wherein the restraining member is an auxiliary furring strip used as the furring strip.

3. In the upper opening fitting structure described in claim 2, the auxiliary furring strip has an H-shaped cross section with the central sides of two opposing surface portions connected by a connecting portion, and is arranged in a position where one of the surface portions of the two surface portions is positioned on the upper frame portion, or where the connecting portion faces the upper frame portion.

4. 4. The upper opening fitting structure according to claim 3, wherein the auxiliary furring strip has an adhesive layer on the surface portion.

5. 2. The upper opening fitting structure according to claim 1, wherein the lower end of the vertical furring strip serving as the furring strip is located close to the fixed fin portion, while the lower end of the vertical auxiliary furring strip serving as the furring strip is located away from the fixed fin portion, and the horizontal furring strip serving as the furring strip is arranged between the lower end of the vertical auxiliary furring strip and the fixed fin portion with a gap between it and the vertical furring strip.

6. 2. The upper opening fitting structure according to claim 1, wherein the lower end of the vertical furring strip serving as the furring strip is located close to the fixed fin portion, while the lower end of the vertical auxiliary furring strip serving as the furring strip is located away from the fixed fin portion, and the vertical furring strip serving as the furring strip is provided between the lower end of the vertical auxiliary furring strip and the fixed fin portion.

7. 2. The upper opening fitting structure according to claim 1, wherein the lower end of the vertical furring strip serving as the furring strip is positioned close to the fixed fin portion, and the lower end of the vertical auxiliary furring strip serving as the furring strip is also positioned close to the fixed fin portion.

8. An opening upper fitting structure according to any one of claims 1 to 7, characterized in that the upper frame portion of the frame body fitted into the opening is the upper frame portion of a window frame.

9. In the upper opening fitting structure described in any one of claims 1 to 7, the upper frame portion of the frame body that is fitted into the opening is the upper frame portion of a shutter storm door located above the window frame, characterized in that

Citation Information

Patent Citations

  • Exterior wall structure

    JP2001227137A