JP7798935B2 - Draining material - Google Patents

Description

The present invention relates to a draining material.

Patent Document 1 discloses a window structure constructed in an opening in an exterior wall. A frame is provided along the indoor surface of the inner periphery of the opening to attach a window sash. The window sash is inserted into the opening from the outdoor side and abuts against the frame on the inner periphery of the opening, where it is fixed with screws. The drip-proofing material used at the bottom edge of the opening is formed into a roughly groove-like shape in plan view, with the bottom edge and slightly raised overlapping portions on both sides of it, and has a roughly L-shaped cross section that runs from the outer periphery of the opening to a position just before the frame on the inner periphery of the opening. The lower trim is attached so that it straddles the opening from the outer periphery to the inner periphery, pressing it against the opening from the outer periphery.

Patent No. 3945646

Patent Document 1 does not disclose in detail the relationship between the window sash and the underlying flashing material. According to Figures 2 and 3 of Patent Document 1, the center of the flashing material is attached to the bottom surface inside the opening, and the center of the flashing material is spaced below the bottom edge of the sash. Both sides of the center of the flashing material rise from the side edges of the center and are attached to the inside side surfaces of the opening. According to Figure 3(a) of Patent Document 1, the lower right and lower left corners of the window sash are notched, so both sides of the center of the flashing material are also spaced apart from the window sash. As a result, the vertical surface behind the flashing material is not covered by the flashing material, and the corner between the inside side surface of the opening and the flashing surface is not sufficiently waterproofed by the flashing material alone. Furthermore, the flashing material and the window sash are not integrated properly.
SUMMARY OF THE INVENTION It is therefore an object of the present invention to enable waterproofing under the sides of a sash to be achieved using only a flashing material, and to improve the integrity of the flashing material and the sash.

The reference numbers in parentheses below refer to Figures 1 to 11.

In order to solve the above problems, according to claim 1,
A water dripping material (30) is attached to an opening (2) formed in an exterior wall (1) having a thickness and is provided under a sash (10) disposed in a position recessed from the outer surface of the exterior wall (1) toward the interior of the building,
an inclined plate (41) laid on the bottom surface (3) inside the opening (2), inclined downward toward the outside, and protruding from the opening (2) to the outside;
a rear tab (42) bent upward from the rear edge of the inclined plate (41) and abutted against a sight surface (3c) provided along the lower edge of the sash (10) inside the opening (2) and fixed to the sight surface (3c);
and side tabs (46) bent upward from the side edges of the inclined plate (41), bent forward from the side edges of the rear tab (42), and abutted against and fixed to the inner side surfaces of the opening (2),
A flashing material (30) is provided, characterized in that the inclined plate (41), the rear tab (42) and the side tab (46) form a corner sealed by these.

According to claim 1, the angle formed by the inclined plate (41), rear tab (42), and side tab (46) provides the flashing with water-tightness under the side of the sash and contributes to preventing water from seeping into the exterior wall (1). The rear tab (42) being fixed by abutting against the facing surface (3c) contributes to improving the integrity of the sash (10) and the flashing (30). The downward slope of the inclined plate (41) toward the exterior contributes to improving the drainage of rainwater that rests on the inclined plate (41). The inclined plate (41) extending from the opening (2) to the exterior contributes to improving the drainage of rainwater that rests on the inclined plate (41).

According to claim 2,
The water-repellent material (30) according to claim 1,
The rear tab (42) has a first extension (42a) on a side of the rear tab (42) that extends upward from an upper edge of a central portion of the rear tab (42),
The side tab (46) has a second extension (46a) at the rear of the side tab (46) that extends upward from the upper edge of the front of the side tab (46),
The first extension portion (42a) is abutted against a second sight surface (5c) provided along the side edge of the sash (10) inside the opening (2) and fixed to the second sight surface (5c),
The second extension portion (46a) is abutted against the side surface inside the opening (2) and fixed to the side surface,
The flashing material (30) is provided, characterized in that the first extension portion (42a) and the second extension portion (46a) form a corner that is sealed by them.

According to claim 2, the first extension portion (42a) abuts against the second visible surface (5c) and is fixed to the second visible surface (5c), which contributes to preventing water from seeping into the exterior wall (1) and improving the integrity of the sash (10) and the flashing material (30). The first extension portion (42a) and the second extension portion (46a) form a sealed angle, which contributes to preventing water from seeping into the exterior wall (1).

According to claim 3,
The water-repellent material (30) according to claim 2,
a rear plate (81) that is overlapped on the first extension portion (42a) and joined to the first extension portion (42a) and that abuts against an upper surface of the inclined plate (41) along a rear edge of the inclined plate (41);
a side plate (82) that is bent forward from a side edge of the rear plate (81), overlaps the side tab (46), is joined to the side tab (46), and is abutted against the upper surface of the inclined plate (41) along the side edge of the inclined plate (41);
A water-repellent material (30) is provided, further comprising:

According to claim 3, the rear plate (81) abutting against the upper surface of the inclined plate (41) contributes to preventing water from seeping in between the rear plate (81) and the rear tab (42) from above the inclined plate (41), and ultimately contributes to preventing water from seeping in to the outer wall (1). The side plate (82) abutting against the upper surface of the inclined plate (41) contributes to preventing water from seeping in between the side plate (82) and the side tab (46) from above the inclined plate (41), and ultimately contributes to preventing water from seeping in to the outer wall (1).

According to claim 4,
The water-repellent material (30) according to claim 3,
A sealing material (90) is provided at the corner formed by the side plate (82) and the inclined plate (41) and at the corner formed by the rear plate (81) and the inclined plate (41).
A water-repellent material (30) is provided, further comprising:

According to claim 4, the provision of the sealing material (90) at the corner formed by the side plate (82) and the inclined plate (41) and at the corner formed by the rear plate (81) and the inclined plate (41) contributes to preventing water from seeping in from above the inclined plate (41) to the back of the side plate (82) and the rear plate (81), and ultimately contributes to preventing water from seeping into the exterior wall (1).

According to claim 5,
The water-repellent material according to claim 3 or 4,
a front flange (83) that is bent laterally from the front edge of the side plate (82), extends downward from the lower end of the front edge of the side plate (82), and abuts against and is fixed to the outer surface of the outer wall (1);
a cover (84) extending from the lower portion of the front flange (83) in a direction opposite to the direction in which the upper portion of the front flange (83) extends from the front edge of the side plate (82);
Further provided with
The inclined plate (41)
a wide portion (41b) placed face down on the bottom surface (3) inside the opening (2);
a narrow portion (41a) extending from the wide portion (41b) of the opening (2) to the front, flush with the wide portion (41b), and projecting outward from the front edge of the bottom surface (3);
A water-repellent material (30) is provided, characterized in that the cover (84) covers from the front the area below the front edge of the part of the wide portion (41b) that extends laterally from the side edge of the narrow portion (41a).

According to claim 5, rainwater flowing down from the front edge of the wide portion (41b) that extends laterally from the side edge of the narrow portion (41a) is stopped by the cover (84). This helps prevent water from seeping into the area below the inclined plate (41).

According to claim 6,
The water-repellent material (30) according to claim 5,
an overlapping tab (51) that overlaps a portion of the wide portion (41b) that extends laterally from the side edge of the narrow portion (41a) and that is along the front edge of that portion;
a closing tab (52) bent downward from the front edge of the folding tab (51);
Equipped with
A flashing material (30) is provided, characterized in that the cover (84) overlaps the sealing tab (52).

According to claim 6, the overlapping tab (51) is overlapped under the portion of the wide portion (41b) that extends laterally from the side edge of the narrow portion (41a), and the sealing tab (52) is bent downward from the front edge of the overlapping tab (51). This makes it difficult for rainwater flowing down from the front edge of the portion that extends laterally from the side edge of the narrow portion (41a) to seep into the area below the inclined plate (41). While the cover (84) contributes to preventing water from seeping into the area below the inclined plate (41), the overlapping tab (51) and sealing tab (52) reinforce the water-seeking prevention function of the cover (84).

According to claim 7,
The water-repellent material (30) according to claim 6,
a tip plate (43) bent downward from the front edge of the narrow portion (41a);
a lower plate (44) bent backward from the lower end of the tip plate (43);
a lower tab (45) bent downward from the rear edge of the lower plate (44) and abutted against the outer surface of the outer wall (1) to be fixed to the outer surface;
a cap (61) fitted into a small edge (47) surrounded by the narrow portion (41a), the tip plate (43), and the side edges of the lower plate (44);
a joining tab (62) folded laterally from the rear edge of the cap (61);
A flashing material (30) is provided, characterized in that the closing tab (52) and the joined tab (62) are sandwiched between the cover (84) and the outer surface of the outer wall (1), and the cover (84), the closing tab (52), and the joined tab (62) are joined together.

According to claim 7, fitting the cap (61) into the edge (47) contributes to preventing water from seeping into the edge (47), and ultimately contributes to preventing water from seeping into the outer wall (1). The sealing tab (52) and the connecting tab (62) are sandwiched between the cover (84) and the outer surface of the outer wall (1), and the cover (84), sealing tab (52), and connecting tab (62) are joined, reinforcing the water-proof function of the cover (84). In other words, by joining the cover (84), sealing tab (52), and connecting tab (62), rainwater flowing down from the front edge of the portion extending laterally from the side edge of the narrow portion (41a) is less likely to seep into the area below the inclined plate (41).

According to claim 8,
The water-repellent material (30) according to claim 5,
a tip plate (43) bent downward from the front edge of the narrow portion (41a);
a lower plate (44) bent backward from the lower end of the tip plate (43);
a lower tab (45) bent downward from the rear edge of the lower plate (44) and abutted against the outer surface of the outer wall (1) to be fixed to the outer surface;
a cap (61) fitted into a small edge (47) surrounded by the narrow portion (41a), the tip plate (43), and the side edges of the lower plate (44);
a joining tab (62) bent laterally from the rear edge of the cap (61);
A flashing material (30) is provided, characterized in that the joined tab (62) is sandwiched between the cover (84) and the outer surface of the outer wall (1), and the cover (84) and the joined tab (62) are joined together.

According to claim 8, fitting the cap (61) into the edge (47) contributes to preventing water from seeping into the edge (47), and ultimately contributes to preventing water from seeping into the outer wall (1). The joining of the cover (84) and the joinable tab (62) by sandwiching the joinable tab (62) between the cover (84) and the outer surface of the outer wall (1) reinforces the water-proofing function of the cover (84). In other words, by joining the cover (84) and the joinable tab (62), rainwater flowing down from the front edge of the portion extending laterally from the side edge of the narrow portion (41a) is less likely to seep into the area below the inclined plate (41).

According to claim 9,
The water-repellent material (30) according to claim 8,
a cover plate (70) overlapping the lower tab (45) and extending laterally from the side edge of the lower tab (45);
The water flashing material (30) is provided, characterized in that the cover (84) is overlapped on the portion of the cover plate (70) that extends from the side edge of the lower tab (45).

According to claim 9, the cover plate (70) overlaps the lower tab (45) and extends laterally from the side edge of the lower tab (45), making it difficult for rainwater to penetrate laterally between the lower tab (45) and the outer surface of the exterior wall (1). The cover (84) overlaps the portion of the cover plate (70) that extends from the side edge of the lower tab (45), so the gap between the cover (84) and the outer surface of the exterior wall (1) is filled by the cover plate (70). The overlap between the cover (84) and the cover plate (70) contributes to preventing water from seeping into the exterior wall (1).

This invention allows waterproofing under the sides of the sash to be achieved using only the flashing material, while also creating a sense of unity between the flashing material and the sash.

FIG. 1 is a perspective view of a window structure as seen from the outdoors. FIG. 2 is a horizontal cross-sectional view of the lower part of the window structure. FIG. 3 is a vertical cross-sectional view of the lower portion of the window structure. FIG. 4 is an exploded perspective view of the water-repellent material. FIG. 5 is a perspective view of the water-repellent material. FIG. 6 is an enlarged view of region VI shown in FIG. FIG. 7 is a perspective view of the water-repellent member with some parts removed. FIG. 8 is an enlarged view of VII shown in FIG. FIG. 9 is a perspective view of the water-repellent member with some parts removed. FIG. 10 is an enlarged view of the region X shown in FIG. FIG. 11 is a perspective view of a modified water-repellent material.

Embodiments will now be described with reference to the drawings. The features and technical effects of the embodiments will be understood from the detailed description and drawings below. However, the scope of the present invention is not limited to the embodiments disclosed below. The drawings are provided for illustrative purposes only, and the scope of the present invention is not limited to the examples in the drawings.

<1. Overview of exterior wall, opening and window structure>
Fig. 1 is a perspective view showing a window structure provided in an exterior wall 1 of a building such as a house, Fig. 2 is a horizontal cross-sectional view of the side of the window structure, and Fig. 3 is a vertical cross-sectional view of the lower part of the window structure.

The exterior wall 1 of the building has a thickness. The exterior wall 1 has a rectangular opening 2 that penetrates from the outer surface to the inner surface of the exterior wall 1. The outer surface of the exterior wall 1 refers to the surface facing outdoors, and the inner surface of the exterior wall 1 refers to the surface facing indoors. Because the exterior wall 1 has a thickness, the opening 2 has an inner bottom surface 3, an inner top surface 4, and an inner side surface 5 around its inner periphery, with the bottom surface 3 and top surface 4 facing each other vertically and the side surfaces 5 facing each other horizontally. The portion of the opening 2 closer to the interior is slightly smaller than the portion closer to the exterior, and the bottom surface 3 and side surface 5 have a step. The step 3a of the bottom surface 3 closer to the exterior is lower than the step 3b closer to the interior, and a vertical visible surface 3c is formed between the steps 3a and 3b. The step 5b of the side surface 5 closer to the interior is located inside the step 5a closer to the exterior, and a vertical visible surface 3c is formed between the steps 5a and 5b.

As shown in Figure 2, the exterior material 8 is provided within the opening 2 so as to face the step 5a and the visible surface 5c, slightly spaced from them, and a hollow ventilation layer 9 is formed between the step 5a and the visible surface 5c and the exterior material 8. Note that the exterior material 8 is not shown in Figure 2.

As shown in Figures 1 to 3, the window structure is provided in an opening 2. In addition to the exterior material 8 described above, the window structure includes a sash 10, a base material 20, a backing material 25, and a flashing material 30.

The sash 10 is attached to the opening 2 in a setback state. In other words, the sash 10 is fitted into the opening 2 so that it is positioned further inside the room than the outer surface of the exterior wall 1, and is fixed to the exterior wall 1. When the sash 10 is attached to the opening 2, the visible surface 3c extends horizontally along the bottom edge of the sash 10, and the visible surface 5c extends vertically along the side edge of the sash 10. At the bottom of the opening 2, the visible surfaces 3c and 5c are not hidden behind the sash 10.

Regarding the opening and closing method of the sash 10, the sash 10 may be a fixed window sash, a sliding window sash, a vertical sliding window sash, a horizontal sliding window sash, a casement window sash, a projection window sash, a double-hung window sash, or a folding window sash, or a combination of two or more of these types of sash. Regarding the height of the sash 10, the sash 10 may be a French window sash, a waist window sash, or a small window sash.

The base material 20 is laid on the step 3a of the bottom surface 3, inside the opening 2 and outdoors. The base material 20 has an upper surface that slopes downward toward the outside.

The backing material 25 is laid on the top surface of the base material 20.

<2. Water draining material>
The flashing material 30 is provided inside the opening 2 and outdoors, along the lower part of the side edge of the sash 10 and the bottom edge of the sash 10. The flashing material 30 covers the step 3a of the bottom surface 3, the base material 20, and the backing material 25 from above. The backing material 25 is sandwiched between the base material 20 and the flashing material 30, and the flashing material 30 is supported by the backing material 25 and the base material 20. The flashing material 30 covers the lower part of the step 5a of the side surface 5 of the opening 2 from the side. The flashing material 30 protrudes outward from the opening 2. The flashing material 30 is fixed to the exterior wall 1 with screws or the like. The flashing material 30 and the sash 10 are attached to the exterior wall 1 with a sense of unity.

Figure 4 is an exploded perspective view of the water stripping member 30. Figure 5 is a perspective view of the water stripping member 30. Figure 6 is an enlarged view of area VI shown in Figure 6. Figure 7 is a perspective view of the water stripping member 30 with the fifth part 80 removed. Figure 8 is an enlarged view of area VIII shown in Figure 7. Figure 9 is a perspective view of the water stripping member 30 with parts 70 and 80 removed. Figure 10 is an enlarged view of area X shown in Figure 9. Figures 4 to 10 show arrows representing the front-to-back, left-to-right, and up-to-down directions. The up-to-down, left-to-right, and up-to-down directions are directions parallel to the exterior wall 1. The up-to-down, left-to-right, and up-to-down directions are also called the front-to-back directions. The front-to-back direction is the thickness direction of the exterior wall 1. In other words, the front-to-back direction is the up-to-down, left-to-right, or direction perpendicular to the front-to-back directions. The front direction is the direction from indoors to outdoors. The rear direction is the direction from outdoors to indoors. The up-to-down direction is parallel to the height direction of the opening 2. The up-to-down direction is also called the vertical direction. The downward direction is the direction of gravity, and the upward direction is the opposite direction to gravity. The left-right direction is parallel to the width direction of the opening 2. The left-right direction is also called the lateral direction.

The water flashing material 30 is an assembly assembled in a factory or the like. The water flashing material 30 comprises a first part 40, a pair of second parts 50, a pair of third parts 60, a pair of fourth parts 70, and a fifth part 80. These parts 40, 50, 60, 70, and 80 are assembled to manufacture the water flashing material 30. The parts 40, 50, 60, 70, and 80 are made of a weather-resistant metal material such as an aluminum alloy or stainless steel. The parts 40, 50, 60, 70, and 80 may be coated by plating. The parts 40, 50, 60, 70, and 80 are formed by press working. Note that the fourth part 70 will also be referred to as a cover plate below.

<3. First part>
The first part 40 has an inclined plate 41, a rear tab 42, a tip plate 43, a lower plate 44, a lower tab 45, and a pair of side tabs 46. The first part 40 is a one-piece molded product of the inclined plate 41, the rear tab 42, the tip plate 43, the lower plate 44, the lower tab 45, and the side tabs 46.

The inclined plate 41 is a thin plate that extends forward, backward, left, and right. The front right and left corners of the inclined plate 41 are notched in a rectangular shape, and the width of the front portion 41a of the inclined plate 41 is shorter than the width of the rear portion 41b of the inclined plate 41. The front portion 41a of the inclined plate 41 is called the narrow portion 41a, and the rear portion 41b of the inclined plate 41 is called the wide portion 41b. The wide portion 41b of the inclined plate 41 covers the step 3a of the bottom surface 3, the backing material 25, and the base material 20 from above, and is placed face down on the backing material 25 and base material 20 inside the opening 2 and outdoors. The inclined plate 41 slopes downward toward the outdoors. The narrow portion 41a of the inclined plate 41 protrudes outward from the outdoor edge of the bottom surface 3. The width of the narrow portion 41a is equal to the distance from the exterior material 8 on one side surface 5 of the opening 2 to the exterior material 8 on the other side surface 5.

In Figure 5, a two-dot chain auxiliary line 8A is shown on the top surface of the inclined plate 41. This auxiliary line 8A is the intersection line where the surface of the exterior material 8 intersects with the inclined plate 41 when the surface is lowered directly vertically. As is clear from this auxiliary line 8A, the portion of the wide portion 41b that extends laterally from the side edge of the narrow portion 41a is located directly below the exterior material 8 and the ventilation layer 9.

The rear tab 42 rises from the rear edge of the inclined plate 41. Specifically, the rear tab 42 is bent upward from the rear edge of the inclined plate 41. Therefore, the corner formed by the rear tab 42 and the inclined plate 41 is sealed seamlessly by the rear tab 42 and the inclined plate 41.

The rear tab 42 is a thin plate that extends vertically and horizontally. The vertical lengths of the left and right sides of the rear tab 42 are longer than the vertical length of the center of the rear tab 42, and the rear tab 42 is formed in a groove or U shape. In other words, the rear tab 42 has extensions 42a on its sides that extend upward beyond the center. The distance from one extension 42a to the other extension 42a is equal to the width of the narrow portion 41a of the inclined plate 41. The rear tab 42 is horizontally elongated, and the total vertical length of the rear tab 42 is shorter than the total horizontal width of the rear tab 42.

The rear tab 42 abuts against the visible surface 3c and is fixed to the visible surface 3c with a screw or the like. The rear tab 42 may be fastened together with a flange formed on the lower end of the sash 10 to the visible surface 3c. The extension 42a of the rear tab 42 abuts against the visible surface 5c and is fixed to the visible surface 5c with a screw or the like. The extension 42a of the rear tab 42 may be fastened together with a flange formed on the side end of the sash 10 to the visible surface 5c.

The side tabs 46 rise from the side edges of the wide portion 41b of the sloping plate 41 and extend forward from the side edges of the rear tab 42. Specifically, the side tabs 46 are bent upward from the side edges of the wide portion 41b of the sloping plate 41 and bent forward from the side edges of the rear tab 42. As a result, the corners formed by the side tabs 46 and the sloping plate 41 are sealed without interruption by the side tabs 46 and the sloping plate 41; the corners formed by the side tabs 46 and the rear tab 42 are sealed without interruption by the side tabs 46 and the rear tab 42; and the corners formed by the side tabs 46, the rear tab 42, and the sloping plate 41 are sealed with the side tabs 46, the rear tab 42, and the sloping plate 41.

(3) The first component 40 is an integrally molded component including the inclined plate 41, rear tab 42, tip plate 43, lower plate 44, lower tab 45, and side tab 46. The corners formed by the inclined plate 41, rear tab 42, and side tab 46 are sealed by the side tab 46, rear tab 42, and inclined plate 41. The corners formed by the side tab 46 and inclined plate 41 are sealed without interruption by the side tab 46 and inclined plate 41. The corners formed by the side tab 46 and the rear tab 42 are sealed without interruption by the side tab 46 and rear tab 42. Therefore , rainwater on the inclined plate 41 does not leak behind the first component 40, preventing water from seeping into the exterior wall 1.

The corner formed by the side tab 46 and the rear tab 42 fits into the corner formed by the sight surface 5c and the step 5a.

The tip plate 43 hangs down from the front edge of the inclined plate 41. Specifically, the tip plate 43 is bent downward from the front edge of the inclined plate 41. Therefore, the corner formed by the tip plate 43 and the inclined plate 41 is sealed seamlessly by the tip plate 43 and the inclined plate 41. The tip plate 43 is shaped like a thin rectangular plate that extends vertically and horizontally. The tip plate 43 is elongated horizontally, and the vertical length of the tip plate 43 is shorter than its width. The width of the tip plate 43 is equal to the distance from the exterior material 8 attached to one side surface 5 of the opening 2 to the exterior material 8 attached to the other side surface 5.

The lower plate 44 extends rearward from the lower edge of the tip plate 43. Specifically, the lower plate 44 is bent rearward from the lower edge of the tip plate 43. Therefore, the corner formed by the lower plate 44 and the tip plate 43 is seamlessly sealed by the lower plate 44 and the tip plate 43. The lower plate 44 is a thin rectangular plate that extends forward, backward, left, and right. The lower plate 44 is elongated horizontally, and its front-to-back length is shorter than its width. The lower plate 44 is spaced downward from the inclined plate 41, forming a small opening 47 surrounded by the narrow portion 41a of the inclined plate 41, the tip plate 43, and the side edges of the lower plate 44. The width of the lower plate 44 is equal to the distance from the exterior material 8 provided on one side surface 5 of the opening 2 to the exterior material 8 provided on the other side surface 5.

The lower tab 45 hangs down from the rear edge of the lower plate 44. Specifically, the lower tab 45 is bent downward from the rear edge of the lower plate 44. Therefore, the corner formed by the lower tab 45 and the lower plate 44 is sealed by the lower tab 45 and the lower plate 44 without interruption. The lower tab 45 is shaped like a thin rectangular plate that extends vertically and horizontally. The lower tab 45 is elongated horizontally, and its vertical length is shorter than its horizontal width. The lower tab 45 abuts against the outer surface of the exterior wall 1 and is fixed to the exterior wall 1 with screws or the like. The horizontal width of the lower tab 45 is equal to the distance from the exterior material 8 attached to one side surface 5 of the opening 2 to the exterior material 8 attached to the other side surface 5.

<4. Second part>
The second part 50 has an overlapping tab 51 and a closing tab 52. The second part 50 is a one-piece molded product of the overlapping tab 51 and the closing tab 52.
The overlapping tab 51 is formed in the shape of a rectangular thin plate that is wide in all directions.
The closing tab 52 hangs down from the front edge of the overlapping tab 51. Specifically, the closing tab 52 is bent downward from the front edge of the overlapping tab 51. Therefore, the corner formed by the closing tab 52 and the overlapping tab 51 is seamlessly sealed by the closing tab 52 and the overlapping tab 51. The closing tab 52 is formed in the shape of a rectangular thin plate that extends in all directions.

The overlapping tab 51 is overlapped under the wide portion 41b of the inclined plate 41, next to the narrow portion 41a. The overlapping tab 51 is overlapped at the front portion of the wide portion 41b that extends laterally from the side edge of the narrow portion 41a. The overlapping tab 51 may be joined to the wide portion 41b of the inclined plate 41 by welding or other means. The front edge of the overlapping tab 51 is aligned with the front edge of the wide portion 41b. The side edge of the overlapping tab 51 is aligned with the front edge of the wide portion 41b. Because the overlapping tab 51 is overlapped under the wide portion 41b of the inclined plate 41, rainwater flowing down from the front edge of the wide portion 41b is prevented from seeping in between the overlapping tab 51 and the wide portion 41b.

The sealing tab 52 is positioned below the front edge of the portion of the wide portion 41b that extends laterally from the side edge of the narrow portion 41a. The sealing tab 52 seals off the area below the portion of the wide portion 41b that extends laterally from the side edge of the narrow portion 41a from the front. One side edge of the sealing tab 52 is aligned with the front edge of the wide portion 41b, and the other side edge of the sealing tab 52 is aligned with the side edge of the narrow portion 41a.

<5. Third Part>
The third part 60 has a cap 61 and a tab to be joined 62. The third part 60 is an integrally molded product of the cap 61 and the tab to be joined 62.
The cap 61 is a box-shaped body made up of side plates, a bottom plate, a front plate, and a top plate. The cap 61 is fitted into the opening 47 to close the opening 47. Specifically, the bottom plate of the cap 61 is placed on top of the lower plate 44, the front plate of the cap 61 is placed behind the tip plate 43, the top plate of the cap 61 is placed below the narrow portion 41a of the inclined plate 41, and the side plates of the cap 61 close the opening 47. The cap 61 prevents water from entering the opening 47. The bottom plate, front plate, and top plate of the cap 61 may be joined to the lower plate 44, the tip plate 43, and the narrow portion 41a, respectively, by welding or the like.

The joinable tab 62 extends from the rear edge of the cap 61, specifically from the rear edge of the side plate of the cap 61. Specifically, the joinable tab 62 is bent rearward from the rear edge of the side plate of the cap 61. Therefore, the corner formed by the joinable tab 62 and the side plate of the cap 61 is sealed without interruption by the joinable tab 62 and the side plate of the cap 61. The joinable tab 62 is formed in the shape of a thin plate that extends up, down, left, and right.

The joinable tab 62 is placed behind the closing tab 52 of the second part 50. The joinable tab 62 is joined to the closing tab 52 by welding, rivets, or the like. The rivets may be peel-type blind rivets. Even if water seeps in between the joinable tab 62 and the closing tab 52, the water is stopped by the corner formed by the joinable tab 62 and the side plate of the cap 61. This prevents water from seeping into the edge 47.

The tab to be joined 62 is placed on the side of the lower tab 45 of the first part 40, and the lower tab 45 is abutted against the outer surface of the outer wall 1. The thickness of the tab to be joined 62 is equal to the thickness of the lower tab 45 of the first part 40.

<6. Fourth part (cover plate)>
The cover plate 70 is formed in a thin plate shape that extends vertically and horizontally. The vertical lengths of the left and right sides of the cover plate 70 are longer than the vertical length of the center of the cover plate 70, and the cover plate 70 is formed in a groove or U shape. In other words, the cover plate 70 has extensions 70a on its sides that extend upward beyond the center.

The center of the cover plate 70 overlaps the lower tab 45 of the first part 40. The center of the cover plate 70 may be joined to the lower tab 45 by welding or the like. The upper edge of the center of the cover plate 70 extends to the corner formed by the lower tab 45 and the lower plate 44. The cover plate 70 protrudes laterally from the side edge of the lower tab 45. The upper edge of this protruding portion contacts the lower edge of the closing tab 52 of the second part 50 and the joining tab 62 of the third part 60. The side of the cover plate 70 extends laterally beyond the side edges of the closing tab 52, the joining tab 62, and the wide portion 41b. The extending portion 70a of the cover plate 70 extends above the inclined plate 41 of the first part 40.

The sides and extensions 70a of the cover plate 70 abut against the outer surface of the exterior wall 1. The cover plate 70 is fixed to the outer surface of the exterior wall 1 with screws or the like.

<7. Fifth Part>
The fifth part 80 has a rear plate 81, a side plate 82, a front flange 83, and a cover 84. The fifth part 80 is an integrally molded product in which the rear plate 81, the side plate 82, the front flange 83, and the cover 84 are molded.

The rear plate 81 is a thin rectangular plate that extends vertically and horizontally. The rear plate 81 is placed in front of the side and extension 42a of the rear tab 42 of the first component 40. The rear plate 81 is joined to the side and extension 42a of the rear tab 42 by welding, rivets, or the like. The rivets may be peel-type blind rivets. The rear plate 81 is fastened together with the extension 42a of the rear tab 42 to the projection surface 5c by screws or the like.

The side plate 82 extends forward from the side edge of the rear plate 81. Specifically, the side plate 82 is bent forward from the side edge of the rear plate 81. Therefore, the corner formed by the side plate 82 and the rear plate 81 is sealed without interruption by the side plate 82 and the rear plate 81.

The side plate 82 is a thin rectangular plate that extends forward, backward, and vertically. The side plate 82 overlaps the side tab 46 of the first component 40. The side plate 82 is joined to the side tab 46 by welding, rivets, or the like. The rivets may be peel-type blind rivets. The side plate 82 is fixed to the step 5a of the side surface 5 by screws or the like. The side plate 82 may be fastened together with the side tab 46 to the step 5a of the side surface 5.

The lower edge of the side plate 82 fits along the corner formed by the side tab 46 and the wide portion 41b. The corner formed by the side plate 82 and the rear plate 81 fits into the corner formed by the side tab 46 and the rear tab 42.

The front flange 83 extends laterally from the front edge of the side plate 82. Specifically, the front flange 83 is bent laterally from the front edge of the side plate 82. Therefore, the corner formed by the front flange 83 and the side plate 82 is sealed without interruption by the front flange 83 and the side plate 82.

The front flange 83 is a thin rectangular plate that extends vertically and horizontally. The vertical length of the front flange 83 is longer than the vertical length of the side plate 82, and the lower part of the front flange 83 extends downward from the lower end of the front edge of the side plate 82.

The upper part of the front flange 83 abuts against the outer surface of the exterior wall 1 and is fixed to the exterior wall 1 with screws or the like. The lower part of the front flange 83 overlaps the front of the side and extension portion 70a of the cover plate 70. The lower part of the front flange 83 is joined to the side and extension portion 70a of the cover plate 70 by welding, rivets or the like. The rivets may be peel-type blind rivets.

The cover 84 extends from the lower part of the front flange 83 beyond the front edge of the side plate 82. The direction in which the cover 84 extends from the lower part of the front flange 83 is opposite the direction in which the upper part of the front flange 83 extends from the front edge of the side plate 82. The cover 84 is a thin rectangular plate that extends vertically and horizontally. The cover 84 and the front flange 83 are continuous and flush with each other.

The cover 84 is positioned below the front edge of the portion of the wide portion 41b of the first part 40 that extends laterally from the side edge of the narrow portion 41a, and covers the area below that front edge from the front. The cover 84 overlaps the front of the sealing tab 52 of the second part 50. The cover 84 is joined to the sealing tab 52 by welding, rivets, or the like. The rivets may be peel-type blind rivets. In the case of rivets, the cover 84 may be fastened together with the sealing tab 52 to the joined tab 62 of the third part.

The cover 84 is placed in front of the cover plate 70, below the closing tab 52. The cover 84 may be joined to the cover plate 70 by welding or the like. The edge of the cover 84 contacts the side plate of the cap 61. The edge of the cover 84 may be welded to the side plate of the cap 61.

8. Other
As shown in FIG. 11, a seal material 90 may be provided at the corner formed by the side plate 82 and the inclined plate 41 and at the corner formed by the rear plate 81 and the inclined plate 41 .

The rear plate 81 and extension 42a are sandwiched between the waterproof sheet attached to the visible surface 5c and the visible surface 5c. The side plate 82 and side tab 46 are sandwiched between the waterproof sheet attached to the step 5a and the step 5a. The lower tab 45, cover plate 70, extension 70a, sealing tab 52, joined tab 62, front flange 83, and cover 84 are sandwiched between the waterproof sheet attached to the outer surface of the exterior wall 1 and that outer surface. The waterproof sheets listed above may be moisture-permeable.

9. Advantageous Technical Effects
(1) The rear tab 42 of the first component 40 abuts against the find surface 3 c below the sash 10 and is fixed to the find surface 3 c, resulting in a high degree of integration between the sash 10 and the flashing material 30. The extension 42 a of the rear tab 42 abuts against the find surface 5 c below the side of the sash 10 and is fixed to the find surface 5 c, resulting in a high degree of integration between the sash 10 and the flashing material 30.

(2) The narrow portion 41a, tip plate 43, and lower plate 44 of the inclined plate 41 form a flange that extends outward from the bottom edge of the opening 2. The upper surface of the flange, i.e., the upper surface of the narrow portion 41a, is flush with the upper surface of the wide portion 41b, which extends to the back above the bottom surface 3 of the opening 2. The sash 10, located at the back of the inside of the opening 2, is located immediately above the rear edge of the wide portion 41b, and the rear tab 42 fills the gap between the bottom edge of the sash 10 and the rear edge of the wide portion 41b. The width of the flange is narrower than the width of the opening 2. However, the width of the flange is equal to the spacing between the exterior materials 8 provided on both the left and right sides of the inside of the opening 2 and is also equal to the width of the sash 10 as seen from outside. The above features enhance the integrated appearance of the flashing material 30 and the sash 10 and emphasize the apparent thickness of the exterior wall 1.

(3) The first part 40 is a single-piece molded product consisting of an inclined plate 41, a rear tab 42, a tip plate 43, a lower plate 44, a lower tab 45, and a side tab 46. The corners formed by the inclined plate 41, the rear tab 42, and the side tab 46 are sealed by the side tab 46, the rear tab 42, and the inclined plate 41. The corners formed by the side tab 46 and the inclined plate 41 are sealed without interruption by the side tab 46 and the inclined plate 41. The corners formed by the side tab 46 and the rear tab 42 are sealed without interruption by the side tab 46 and the rear tab 42. Therefore, rainwater on the inclined plate 41 does not leak behind the first part 40, preventing water from seeping into the exterior wall 1.

(4) Because the lower end of the rear plate 81 abuts against the upper surface of the inclined plate 41, rainwater and the like are prevented from seeping in from above the inclined plate 41 between the rear plate 81 and the rear tab 42. Because the lower end of the side plate 82 abuts against the upper surface of the inclined plate 41, rainwater and the like are prevented from seeping in from above the inclined plate 41 between the side plate 82 and the side tab 46. In particular, the sealing material 90 reinforces this water seepage prevention. These factors contribute to preventing water seepage into the exterior wall 1.

(5) The front flange 83 is bent sideways from the front edge of the side plate 82 and is fixed against the outer surface of the outer wall 1. The front flange 83 helps prevent water from seeping in between the side plate 82 and the side surface 5 of the opening 2.

(6) The front flange 83 projects downward from the lower end of the front edge of the side plate 82, and the cover 84 extends from the lower part of the front flange 83. The direction in which the cover 84 extends is opposite to the direction in which the upper part of the front flange 83 extends from the front edge of the side plate 82. The cover 84 covers the area below the front edge of the portion of the wide portion 41b of the inclined plate 41 that extends laterally from the side edge of the narrow portion 41a from the front. Such a cover 84 helps prevent water from entering the area below the inclined plate 41.

(7) If the overlapping tab 51 were placed on top of the inclined plate 41, rainwater and other water on the inclined plate 41 would seep in between the overlapping tab 51 and the inclined plate 41. In contrast, this problem does not arise in this embodiment. In other words, because the overlapping tab 51 is placed under the portion of the wide portion 41b that extends laterally from the side edge of the narrow portion 41a, rainwater and other water on the inclined plate 41 does not seep in between the overlapping tab 51 and the inclined plate 41.

(8) On the back side of the cover 84, the overlapping tab 51 runs along the front edge of the portion of the wide portion 41b that extends laterally from the side edge of the narrow portion 41a. The sealing tab 52 is bent downward from the front edge of the overlapping tab 51. The sealing tab 52 is overlapped behind the cover 84. As a result, rainwater flowing down from the front edge of the wide portion 41b is less likely to seep into the area below the inclined plate 41. While the cover 84 contributes to preventing water from seeping into the area below the inclined plate 41, the overlapping tab 51 and sealing tab 52 reinforce the water-seeking prevention function of the cover 84.

(9) Because the cap 61 of the third part 60 is fitted into the edge 47, rainwater and other water is prevented from seeping into the edge 47. Because the joined tab 62 is bent sideways from the rear edge of the cap 61, the boundary between the joined tab 62 and the cap 61 is waterproof. Because the joined tab 62, cover 84, and closing tab 52 are joined, the water-proofing function of the cover 84 is improved.

(10) The cover plate 70 is placed over the lower tab 45 and extends laterally from the side edge of the lower tab 45, making it difficult for rainwater to seep in laterally between the lower tab 45 and the outer surface of the exterior wall 1.

(11) Because the cover 84 and front flange 83 overlap the portion of the cover plate 70 that extends from the side edge of the lower tab 45, the gap between the cover 84 and front flange 83 and the outer surface of the exterior wall 1 is filled by the cover plate 70. The fact that the cover 84 and front flange 83 overlap the cover plate 70 helps prevent water from seeping into the exterior wall 1.

(12) Because the water flashing material 30 helps prevent water from seeping into the exterior wall 1, the lifespan of the exterior wall 1 is extended, and ultimately the lifespan of the building in which the exterior wall 1 is installed is extended. Therefore, by extending the lifespan of buildings, the water flashing material 30 contributes to achieving goals such as "sustainable urban development" and "SDGs (Sustainable Development Goals)."

DESCRIPTION OF SYMBOLS 1 Outer wall 2 Opening 3 Bottom surface 3c Visible surface 5 Side surface 5c Second visible surface 10 Sash 30 Water flashing material 41 Inclined plate 41a Narrow width portion 41b Wide width portion 42 Rear tab 42a First extending portion 43 Tip plate 44 Lower plate 45 Lower tab 46 Side tab 46a Second extending portion 47 Edge 51 Overlap tab 52 Closing tab 61 Cap 62 Joined tab 70 Cover plate 81 Rear plate 82 Side plate 83 Front flange 84 Cover

Claims (9)

A water dripping material that is attached to an opening formed in an exterior wall having a thickness and is provided under a sash that is located in a position recessed from the outer surface of the exterior wall toward the interior of the building,
an inclined plate laid on a bottom surface inside the opening, inclined downward toward the outdoors, and protruding from the opening toward the outdoors;
a rear tab bent upward from the rear edge of the inclined plate and secured to a sight surface provided along the bottom edge of the sash inside the opening;
a side tab bent upward from the side edge of the inclined plate, bent forward from the side edge of the rear tab, and abutted against a side surface of the inside of the opening and fixed to the side surface;
A flashing material characterized in that the inclined plate, the rear tab, and the side tab form an angle sealed by each other. The water-repellent material according to claim 1,
the rear tab has a first extension portion on a side of the rear tab that extends upward from an upper edge of a central portion of the rear tab;
the side tab has a second extension at the rear of the side tab that extends upward from an upper edge of the front of the side tab;
The first extension portion is abutted against a second sight surface provided along a side edge of the sash inside the opening and fixed to the second sight surface,
the second extension portion is abutted against the side surface inside the opening and fixed to the side surface,
A water-repellent material characterized in that the first extension portion and the second extension portion form a corner that is sealed by them. The water-repellent material according to claim 2,
a rear plate that is overlapped on the first extending portion and joined to the first extending portion, and that abuts against an upper surface of the inclined plate along a rear edge of the inclined plate;
a side plate that is bent forward from a side edge of the rear plate, overlaps the side tab, is joined to the side tab, and is abutted against an upper surface of the inclined plate along the side edge of the inclined plate;
A draining material further comprising: The water-repellent material according to claim 3,
The water dripping material further comprises a sealing material provided at a corner formed by the side plate and the inclined plate and at a corner formed by the rear plate and the inclined plate. The water-repellent material according to claim 3 or 4,
a front flange that is bent laterally from a front edge of the side plate, extends downward from a lower end of the front edge of the side plate, and abuts against and is fixed to the outer surface of the outer wall;
a cover extending from a lower portion of the front flange in a direction opposite to a direction in which an upper portion of the front flange extends from a front edge of the side plate;
Further provided with
The inclined plate is
a wide portion placed face down on the bottom surface inside the opening;
a narrow portion extending from the wide portion of the opening to the front, flush with the wide portion, and extending from a front edge of the bottom surface to the outside;
A water-repellent material characterized in that the cover covers from the front an area below the front edge of the portion of the wide portion that extends laterally from the side edge of the narrow portion. The water-repellent material according to claim 5,
an overlapping tab that overlaps a portion of the wide portion that extends laterally from the side edge of the narrow portion and that is along a front edge of the portion;
a closure tab folded downward from the front edge of the overlapping tab;
Equipped with
A flashing material characterized in that the cover overlaps the sealing tab. The water-repellent material according to claim 6,
a tip plate bent downward from a front edge of the narrow portion;
a lower plate bent backward from the lower end of the tip plate;
a lower tab bent downward from the rear edge of the lower plate and abutted against the outer surface of the outer wall to be fixed to the outer surface;
a cap fitted to an end surrounded by the narrow portion, the tip plate, and the side edges of the lower plate;
a joined tab folded laterally from the rear edge of the cap;
A flashing material characterized in that the closing tab and the joined tab are sandwiched between the cover and the outer surface of the outer wall, and the cover, the closing tab, and the joined tab are joined together. The water-repellent material according to claim 5,
a tip plate bent downward from a front edge of the narrow portion;
a lower plate bent backward from the lower end of the tip plate;
a lower tab bent downward from the rear edge of the lower plate and abutted against the outer surface of the outer wall to be fixed to the outer surface;
a cap fitted to an end surrounded by the narrow portion, the tip plate, and the side edges of the lower plate;
a joined tab folded laterally from the rear edge of the cap;
A water flashing material characterized in that the joinable tab is sandwiched between the cover and the outer surface of the outer wall, and the cover and the joinable tab are joined together. The water-repellent material according to claim 8,
a cover plate overlying the lower tab and extending laterally from a side edge of the lower tab;
A water-repellent material characterized in that the cover is overlapped on a portion of the cover plate that extends from the side edge of the lower tab.