Rain Ossue Structure

Abstract

To provide a flashing structure improved in construction efficiency.SOLUTION: A flashing structure 1 is installed at a tie-in part structured by the vertically extended outer wall part of a purlin and the roof part of a lean-to roof part extended outward from an intermediate part of the outer wall part, and has a front flashing part 10 and a rear flashing part 20 connected to the front flashing part 10. The front flashing part 10 and the rear flashing part 20 are connected by hooking of the first folding part 14 of a first connection part 12 with the second folding part 24 of a second connection part 22. In mounting the flashing structure 1, first, the front flashing part 10 is constructed at the outer wall part, and to an outer wall material, then the roof part is constructed. After completion of the roof part construction, the second folding part 24 of the rear flashing part 20 is pressed into a clearance between the first folding part 14 and the roof part, and by hooking the second folding part 24 with the first folding part 14, the rear flashing part 20 is connected to the front flashing part 10, and the flashing structure 1 is mounted on the tie-in part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a rain gutter structure, and more particularly to a rain gutter structure to be installed at a joint between an exterior wall of a main building and a roof material of a lower building. [Background technology]

[0002] FIG. 14 is a side view and a front view of a conventional flashing, and FIG. 15 is a side schematic view showing a method of attaching the flashing shown in FIG. 14 to a joint portion.

[0003] 14(1) and (2), flashing 70 is formed by bending a single long metal plate, and includes vertical portion 71 extending vertically upward and inclined portion 72 extending diagonally downward outward (to the right in FIG. 14(1)) from the lower end of vertical portion 71. Also, hanging portion 73 extending vertically downward relative to inclined portion 72 is connected to the outer end of inclined portion 72, and flange portion 74 extending outward generally parallel to inclined portion 72 is connected to the lower end of hanging portion 73.

[0004] Next, a method of attaching the flashing 70 shown in FIG. 14 to the joint portion will be described.

[0005] First, referring to Figure 15 (1), at a joint portion 90 in the girder direction (depth direction in the figure), an exterior wall base 76 is installed on the exterior wall portion 75 of the main house, and sheathing boards 82 are installed on the roof portion 81 of the lower house, and waterproof paper 80 is laid across the outer surface of the exterior wall base 76 and the upper surface of the sheathing boards 82. Furthermore, at the roof portion 81, a roofing material 83 is further installed on top of the waterproof paper 80.

[0006] 15(2), a coping 84 is further installed on the end of the roofing material 83 on the side of the exterior wall base 76. After construction at the joint 90 has been carried out in this manner, the flashing 70 is lowered diagonally from above toward the exterior wall base 76, the roofing material 83, and the coping 84 so as to cover the joint 90.

[0007] 15(3), after the vertical portion 71 of the flashing 70 is fixed to the exterior wall base 76 and the inclined portion 72 is fixed to the roof material 83 via the coping board 84, a moisture-permeable waterproof sheet 77 is attached to the exterior wall base 76 and the vertical portion 71 so as to cover the upper outer surface of the vertical portion 71. Next, a plurality of rod-shaped furring strips 78 extending vertically are installed at predetermined intervals in the girder direction on the outer surface of the moisture-permeable waterproof sheet 77, and plate-shaped exterior wall materials 79 are installed from the outer surfaces of the furring strips 78 so as to span each of the furring strips 78.

[0008] Finally, referring to FIG. 15(4), the attachment of the flashing 70 to the joint portion 90 is completed. Summary of the Invention [Problem to be solved by the invention]

[0009] The conventional flashing 70 as described above could be installed without any particular problems in accordance with the conventional general construction procedure in which the exterior wall material 79 and the like are installed after the roof material 83 is installed.

[0010] However, in recent years, there has been a demand to install exterior wall materials 79, etc. before installing the roof material 83 in order to improve construction efficiency, and the conventional flashing 70, which requires waiting until the roof material 83 is installed, has been an obstacle to realizing such demand and improving construction efficiency.

[0011] The present invention has been made to solve the above-mentioned problems, and has an object to provide a rain gutter structure that improves construction efficiency. [Means for solving the problem]

[0012] In order to achieve the above object, the invention described in claim 1 is a flashing structure to be installed at a joint formed by an exterior wall portion of a vertically extending main building and a roof portion of a shed extending outward from the middle of the exterior wall portion, the flashing comprising: a front flashing having an exterior wall base adjacent portion extending vertically upward and used for attaching the exterior wall portion to the exterior wall base, and a first connecting portion formed continuously from the lower end of the exterior wall base adjacent portion; and a rear flashing having a roof adjacent portion used for attaching to the roof portion, and a second connecting portion formed continuously from the exterior wall side end of the roof adjacent portion, the second connecting portion being connectable to the first connecting portion when constructing the rear flashing after constructing the front flashing and the exterior wall portion. The first connecting portion includes a first extending portion extending outward and a first bent portion formed at the outer end of the first extending portion and folded downward. The second connecting portion includes a second extending portion extending toward the exterior wall portion and a second bent portion formed at the outer wall end of the second extending portion and folded upward. The second bent portion is pushed into a gap between the first bent portion and the roof portion to engage with and connect to the first bent portion. The front flashing is formed by bending a single metal plate, and the interior angle between the portion adjacent to the exterior wall base and the first extending portion extending diagonally downward on the outer side is 30°. the rear flashing is formed by bending a single metal plate, and includes a second connecting portion having a second bending portion with an interior angle of 30° with the second extending portion extending diagonally upward on the outer wall side; an inclined portion extending diagonally downward from the outer end of the second extending portion at the same inclination as the second extending portion; a hanging portion extending perpendicularly downward from the outer end of the inclined portion with respect to the inclined portion; and a flange portion extending outward from the lower end of the hanging portion approximately parallel to the second connecting portion. It is something.

[0013] In this way, construction on the roof side can be carried out after construction on the exterior wall side. In addition, the connecting structure is simplified. Furthermore, the first connecting portion can be bent, and play is generated in the engaging portion of the first bent portion and the second bent portion. The invention described in claim 2 is a gutter structure to be installed at a joint formed by an exterior wall portion of a vertically extending main building and a roof portion of a shed extending outward from the middle of the exterior wall portion, the gutter structure comprising: a front gutter having an exterior wall base adjacent portion extending vertically upward and used for attaching the exterior wall portion to the exterior wall base, and a first connecting portion formed continuously from a lower end of the exterior wall base adjacent portion; and a rear gutter having a roof portion adjacent portion used for attaching to the roof portion, and a second connecting portion formed continuously from an end of the roof portion adjacent portion on the exterior wall side, the second connecting portion being connected to the front gutter and the exterior wall base adjacent portion. When the rear flashing is constructed after the wall section is constructed, the rear flashing can be connected to the first connecting section, and the first connecting section has a first extending section extending outward and a first bent section formed at the outer end of the first extending section and folded back downward. The second connecting section has a second extending section extending toward the exterior wall section and a second bent section formed at the outer wall section end of the second extending section and folded back upward. The second bent section is pushed into the gap between the first bent section and the roof section to engage with and connect to the first bent section. The front flashing is formed by bending a single metal plate and has a portion adjacent to the exterior wall base and a portion adjacent to the outer wall base. The rear rain gutter comprises a first connecting part having a first bent part with an inner angle of 30° set with a first extending part extending diagonally downward on the outer wall side, and the rear rain gutter comprises a rear rain gutter cover body formed by bending a single metal plate, and a ventilation member, and the rear rain gutter cover body comprises a second connecting part having a second bent part with an inner angle of 30° set with a second extending part extending diagonally upward on the outer wall side, an inclined part extending diagonally downward further outward from the outer end of the second extending part with the same inclination as the second connecting part, a hanging part extending perpendicularly downward from the outer end of the inclined part relative to the inclined part, and The ventilation member comprises a roof adjacent portion having a flange portion extending outward from the outer end thereof approximately parallel to the second connecting portion, and a plurality of ventilation holes formed parallel to the outer end portion near the outer end portion of the inclined portion, and the ventilation member is installed on the underside of the second connecting portion and the inclined portion, closer to the end portion on the outer wall side than the ventilation holes, and has a rod-like shape with a rectangular cross section in the inclination direction of the second connecting portion and the inclined portion, and comprises a ventilation material having a plurality of air holes that penetrate from the surface on the ventilation hole side to the surface on the outer wall side, and a lower plate portion consisting of a single metal plate laid on the underside of the ventilation material. In this way, the roof side can be installed after the exterior wall side is installed. Also, the connecting structure is simplified. Furthermore, the rear flashing has a ventilation function. The invention described in claim 3 is a gutter structure to be installed at a joint formed by an exterior wall portion of a vertically extending main building and a roof portion of a shed extending outward from the middle of the exterior wall portion, the gutter comprising a first gutter having an exterior wall base adjacent portion extending vertically upward and used for attaching the exterior wall portion to the exterior wall base and a first connecting portion formed continuously from a lower end portion of the exterior wall base adjacent portion; a roof portion adjacent portion used for attaching to the roof portion; and a rear flashing having a second connecting portion formed continuously from an end portion on the outer wall portion side, the second connecting portion being connectable to the first connecting portion when the rear flashing is constructed after the front flashing and the outer wall portion are constructed, the first connecting portion having a first extending portion extending outward and a first bent portion formed on the outer end portion of the first extending portion and folded back downward, the second connecting portion having a second extending portion extending toward the outer wall portion side and a first bent portion formed on the outer wall end portion of the second extending portion and folded back upward. The first gutter is formed by folding a metal plate and has a first connecting portion with a first folding portion having an inner angle of 30° between the portion adjacent to the exterior wall base and the first extending portion extending diagonally downward on the outer side. The rear gutter is formed by folding a metal plate and has a first connecting portion with a first folding portion having an inner angle of 30° between the portion adjacent to the exterior wall base and the first extending portion extending diagonally downward on the outer side. the second connecting portion having a second bent portion whose interior angle with the second extension portion extending in the outward direction is set at 30°; a horizontal portion extending horizontally further outward from the outer end of the second extension portion; a folded portion folded back from the outer end of the horizontal portion; a hanging portion extending vertically downward from the outer wall end of the folded portion to the horizontal portion; and a flange portion extending outward from the lower end of the hanging portion approximately parallel to the horizontal portion. In this way, the roof can be installed after the exterior wall. The connecting structure is also simplified. Furthermore, the use of the pre-gutter used for the longitudinal direction of the roof also makes it possible to install the roof in the slab direction.

[0022] Claim 4 The invention described is as follows: 3 In the configuration of the invention described in any one of the above, the front flashing end is formed by cutting and bending a single metal plate, and the rear flashing end is formed by cutting and bending a single metal plate, and the front flashing end has a front flashing cover portion having a rectangular shape, a third folded portion that folds back from the lower end of the front flashing cover portion to the upper side of the front flashing side, and a nailing portion extending from one of the lateral ends of the front flashing cover portion in the opposite direction to the third folded portion, and the rear flashing end has a rear flashing cover portion having a rectangular shape, and a fourth folded portion that folds back from the lower end of the rear flashing cover portion to the upper side of the rear flashing side.

[0023] With this configuration, processing of the ends of the front and rear flashings is not required. The invention described in claim 5 is a gutter structure to be installed at a joint formed by an exterior wall portion of a vertically extending main building and a roof portion of a shed extending outward from the middle of the exterior wall portion, the gutter structure comprising: a front gutter having an exterior wall base adjacent portion extending vertically upward and used for attaching the exterior wall portion to the exterior wall base, and a first connecting portion formed continuously from a lower end of the exterior wall base adjacent portion; and a rear gutter having a roof portion adjacent portion used for attaching to the roof portion, and a second connecting portion formed continuously from an end of the roof portion adjacent portion on the exterior wall side, the second connecting portion being connected to the first connecting portion when the rear gutter structure is installed after the front gutter and the exterior wall portion are installed. The front flashing end can be connected to the connecting portion and is formed by cutting and bending a single metal plate, and the rear flashing end is also formed by cutting and bending a single metal plate. The front flashing end has a front flashing cover portion having a rectangular shape, a third bend portion that folds back from the lower end of the front flashing cover portion to the upper side of the front flashing side, and a nailing portion extending from one of the lateral ends of the front flashing cover portion in the opposite direction to the third bend portion. The rear flashing end has a rear flashing cover portion having a rectangular shape and a fourth bend portion that folds back from the lower end of the rear flashing cover portion to the upper side of the rear flashing side. In this way, the roof side can be installed after the exterior wall side is installed, and processing of the ends of the front and rear flashings is not required. The invention described in claim 6 is the same as the invention described in claim 5, in which the first connecting portion has a first extension portion extending outward and a first bent portion formed at the outer end of the first extension portion and folded downward, and the second connecting portion has a second extension portion extending toward the outer wall portion and a second bent portion formed at the outer wall end of the second extension portion and folded upward, and the second bent portion is pushed into the gap between the first bent portion and the roof portion to engage and connect with the first bent portion. With this configuration, the connection structure is simplified. Effect of the Invention

[0024] As described above, the invention of claim 1 allows construction on the roof side to be carried out after construction on the exterior wall side, thereby improving construction efficiency. In addition, the connection structure is simple, which is advantageous in terms of cost. Furthermore, since the first connection part can be bent and there is play in the engagement part between the first bent part and the second bent part, the inclination angle of the first connection part and the second connection part can be adjusted, making it possible to accommodate roofs with various slopes. The invention described in claim 2 improves construction efficiency because the construction on the roof side can be done after the construction on the exterior wall side. In addition, the connection structure is simple, which is advantageous in terms of cost. Furthermore, the rear flashing has a ventilation function, which is also good from the viewpoint of ventilation. The invention described in claim 3 improves construction efficiency because the roof side can be constructed after the exterior wall side is constructed. In addition, the connection structure is simple, which is cost-effective. Furthermore, the use of the front flashing used in the construction in the girder direction makes it possible to also construct in the inter-beam direction, further improving construction efficiency.

[0029] Claim 4 The invention described is as follows: 3 In addition to the effects of any one of the above, the end processing of the front and rear flashings is not required, which makes it easier to process the ends. According to the invention described in claim 5, the roof side can be installed after the exterior wall side, improving the efficiency of installation. Also, since processing of the ends of the front and rear flashings is not required, the end processing is easy. The invention as recited in claim 6 has the same effect as the invention as recited in claim 5, and in addition, since the connection structure is simplified, it is advantageous in terms of cost. [Brief description of the drawings]

[0030] [Figure 1] 1A and 1B are a side view and a front view of a rain gutter structure installed at a joint portion in the girder direction according to the first embodiment of the present invention. [Diagram 2] FIG. 2 is an enlarged side view of the front flashing shown in FIG. [Diagram 3] FIG. 2 is an enlarged side view of the rear flashing shown in FIG. [Figure 4] 2 is a side view schematic diagram showing a method of attaching the rain gutter structure shown in FIG. 1 to a joint portion before construction of the roof section. FIG. [Diagram 5] 2A and 2B are a front view and a side view of a gutter end used for processing the end of the gutter shown in FIG. [Figure 6] 2A and 2B are a front view and a side view of a rear flashing end used in the end processing of the rear flashing shown in FIG. [Figure 7] FIG. 6 is a schematic diagram showing an end processing method using the front flashing end shown in FIG. 5. [Figure 8] FIG. 7 is a schematic diagram showing an end processing method using the rear flashing end shown in FIG. 6. [Figure 9]5 is a schematic side view showing a state in which a rain gutter structure according to a second embodiment of the present invention is attached to a joint portion in the girder direction, and corresponds to FIG. 4(4) of the first embodiment. FIG. [Figure 10] FIG. 10 is an enlarged side view of the rear flashing shown in FIG. [Figure 11] FIG. 10 is a plan view of the flashing structure shown in FIG. [Figure 12] 13 is a schematic side view showing a state in which a rain gutter structure according to a third embodiment of the present invention is attached to a joint portion in the inter-beam direction, and corresponds to FIG. 4(4) of the first embodiment. FIG. [Figure 13] FIG. 13 is an enlarged side view of the rear flashing shown in FIG. [Figure 14] 1A and 1B are a side view and a front view of a conventional flashing. [Figure 15] 15 is a schematic side view showing a method of attaching the flashing shown in FIG. 14 to a joint portion. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] FIG. 1 is a side view and a front view of a gutter structure to be installed at a joint in the girder direction according to the first embodiment of this invention, FIG. 2 is an enlarged side view of the front gutter shown in FIG. 1, and FIG. 3 is an enlarged side view of the rear gutter shown in FIG. 1.

[0032] First, referring to Figures 1 (1) and (2), the gutter structure 1 is installed at the juncture in the girder direction between the outer wall portion of the main building extending vertically (described later) and the roof portion of the eaves extending outward from the middle of the outer wall portion, and is provided with a front gutter 10 and a rear gutter 20 connected to the front gutter 10.

[0033] Referring also to Figure 2, the rain guard 10 is formed by bending a single long steel plate with a thickness of 0.35 mm and a longitudinal length (depth direction length in Figure 2) of 1,829 mm by press processing, and has an exterior wall base adjacent portion 11 extending vertically upward, and a first connecting portion 12 formed continuously from the lower end portion of the exterior wall base adjacent portion 11.

[0034] The portion 11 adjacent to the exterior wall base is set to a height of 120 mm and is used for attaching the exterior wall section to the exterior wall base described later.

[0035] The first connecting portion 12 has a short side length (left-right length in FIG. 2) of 30 mm, and includes a first extending portion 13 extending diagonally downward on the outer side (to the right in FIG. 2), and a first bent portion 14 formed at the outer end of the first extending portion 13 and folded back downward. The first bent portion 14 has a width of 10 mm, and the interior angle with the first extending portion 13 is set to 30°. The effects of this configuration will be described later.

[0036] Furthermore, referring to Figure 3, the rear flashing 20 is formed by bending a single long steel plate with a plate thickness of 0.35 mm and a longitudinal length (depth direction length in Figure 3) of 1,829 mm by press processing, and has a roof adjacent portion 21 and a second connecting portion 22 formed continuously from the end portion of the roof adjacent portion 21 on the outer wall side.

[0037] The second connecting portion 22 includes a second extending portion 23 extending obliquely upward from the outer wall side, and a second bent portion 24 that is formed at the outer wall side end of the second extending portion 23 and bent back upward. The second bent portion 24 has a width of 10 mm, and the inner angle with the second extending portion 23 is set to 30°. The effect of this configuration will be described later.

[0038] Moreover, roof adjacent portion 21 is used for attachment to the roof portion, which will be described later. Roof adjacent portion 21 includes inclined portion 25, which extends diagonally downward from the outer end of second extension portion 23 at the same inclination as second extension portion 23, hanging portion 26, which extends perpendicularly downward from the outer end of inclined portion 25 relative to inclined portion 25, and flange portion 27, which extends outward from the lower end of hanging portion 26 substantially parallel to second connecting portion 22. The short side length (the left-right length in FIG. 3) from the outer wall side end of second extension portion 23 to the outer end of inclined portion 25 is set to 85 mm, the height of hanging portion 26 is set to 18 mm, and the short side length of flange portion 27 is set to 30 mm.

[0039] 1(1) and 1(2), the front flashing 10 and the rear flashing 20 are connected by engaging the first bent portion 14 of the first connecting portion 12 with the second bent portion 24 of the second connecting portion 22. The effects of this configuration will be described later.

[0040] FIG. 4 is a side view showing a method for attaching the rain gutter structure shown in FIG. 1 to a joint portion before construction of the roof section.

[0041] First, referring to Figure 4 (1), at the joint portion 90 in the row direction (depth direction in the figure), an exterior wall base 76 is installed on the vertically extending exterior wall portion 75 of the main building, and a sheathing board 82 extending from the middle of the exterior wall portion 75 and sloping downward and outward is installed on the roof portion 81 of the lower building, and waterproof paper 80 is laid across the outer surface of the exterior wall base 76 and the upper surface of the sheathing board 82.

[0042] In this state, the front flashing 10 is attached and fixed to the exterior wall base 76 via the exterior wall base adjacent portion 11. Next, a moisture-permeable waterproof sheet 77 is attached to the exterior wall base 76 and the exterior wall base adjacent portion 11 so as to cover the upper outer surface of the exterior wall base adjacent portion 11, a plurality of rod-shaped furring strips 78 extending vertically are installed at predetermined intervals in the girder direction on the outer surface of the moisture-permeable waterproof sheet 77, and plate-shaped exterior wall materials 79 are installed from the outer surfaces of the furring strips 78 so as to bridge each of the furring strips 78.

[0043] In this manner, as shown in FIG. 4(2), the installation of the front flashing 10 on the exterior wall portion 75 and the installation of the exterior wall material 79 are completed.

[0044] Next, referring to FIG. 4(2), roofing material 83 is installed on top of waterproof paper 80 of roof portion 81, including the area below top flashing 10 for which installation has been completed.

[0045] Next, referring to FIG. 4(3), after a further coping 84 is installed on the end of the roof material 83 on the side of the exterior wall base 76, the rear flashing 20 is slid from the outer side of the coping 84 toward the exterior wall 75, and the second folded portion 24 of the rear flashing 20 is pushed into the gap between the first folded portion 14 and the roof 81 (coping 84). Then, since the configurations of the front flashing 10 and the rear flashing 20 are as described above, the first connecting portion 12 is bent and pushed upward by the second folded portion 24 being pushed in. When the second folded portion 24 is further pushed in from that state and positioned closer to the exterior wall 75 than the first folded portion 14, the second folded portion 24 separates from the first folded portion 14, the force pushing up the first connecting portion 12 is no longer applied, and the first connecting portion 12 returns to its original position. Then, since the second folded portion 24 has a seam structure in which it is folded back upward and the first folded portion 14 has a seam structure in which it is folded back downward as described above, the second folded portion 24 and the first folded portion 14 are hooked together and connected as shown in Fig. 4(4) and Fig. 1(1). In this manner, the second connecting portion 22 can be connected to the first connecting portion 12 when the rear flashing 20 is installed after the front flashing 10 and the exterior wall portion 75 have been installed.

[0046] Finally, referring to FIG. 4(4), the rear flashing 20 is fixed to the roof portion 81 via the hanging portion 26 of the roof adjacent portion 21 and the coping board 84, thereby completing the installation of the flashing structure 1 to the joint portion 90.

[0047] With this configuration, construction on the roof portion 81 side can be carried out after construction on the exterior wall portion 75 side, improving construction efficiency.

[0048] Furthermore, the connection structure is simple due to the seam structure, which is advantageous in terms of cost.

[0049] Furthermore, since the first connecting portion 12 can be bent and play is generated in the engagement portion between the first folded portion 14 and the second folded portion 24, each of which has an interior angle set to 30°, it becomes possible to adjust the inclination angle of the first connecting portion 12 and the second connecting portion 22, making it possible to accommodate roofs of various slopes.

[0050] Figure 5 is a front view and a side view of a front flashing end used to process the end of the front flashing shown in Figure 1, Figure 6 is a front view and a side view of a rear flashing end used to process the end of the rear flashing shown in Figure 1, Figure 7 is a schematic diagram showing a method of end processing using the front flashing end shown in Figure 5, and Figure 8 is a schematic diagram showing a method of end processing using the rear flashing end shown in Figure 6.

[0051] First, referring to Fig. 5 (1) and (2), the top flashing end 31 is formed by bending a single steel plate with a thickness of 0.35 mm by pressing, and includes a top flashing cover part 32 having a rectangular shape, a third bent part 33 that is bent back from the lower end of the top flashing cover part 32 to the upper side of the top flashing side described later, and a nailing part 34 that extends from one of the side ends of the top flashing cover part 32 in the opposite direction to the third bent part 33. The effect of this configuration will be described later. The top flashing cover part 32 has a width (length in the left-right direction in Fig. 5 (2)) of 30 mm and a height of 110 mm, the third bent part 33 has a short side length of 10 mm, and the nailing part 34 has a width (length in the left-right direction in Fig. 5 (1)) of 50 mm and a height of 80 mm.

[0052] Next, referring to Fig. 6 (1) and (2), the rear flashing end 36 is formed by pressing a single steel plate having a thickness of 0.35 mm, and includes a rectangular rear flashing cover part 37 and a fourth bent part 38 that folds back from the lower end of the rear flashing cover part 37 to the upper side of the rear flashing side described later. The effect of this configuration will be described later. The rear flashing cover part 37 has a width (length in the left-right direction in Fig. 6 (2)) of 85 mm and a height of 110 mm, and the fourth bent part 38 has a short side length of 10 mm.

[0053] Next, referring to Fig. 7(1), the leading flashing 10 is attached to the exterior wall base 76 above the leading eaves trim 86 that extends horizontally. The portion of the leading flashing 10 that protrudes from the eaves side end of the leading eaves trim 86 is cut off at the boundary shown by the dashed line in the figure. After aligning the positions of the eaves side ends of the leading flashing 10 and the leading eaves trim 86 in this way, the leading flashing end 31 is brought close to the leading eaves trim 86 from below the leading eaves trim 86, and the third bent portion 33 is hooked onto the lower end 87 of the leading eaves trim 86, and the nailing portion 34 is overlapped with the flange portion 88 of the leading eaves trim 86, as shown in Fig. 7(2).

[0054] 7(2), a nail 35 is driven from the nail driving portion 34 toward the exterior wall base 76 to fasten the nail driving portion 34 and the flange portion 88 to the exterior wall base 76. Furthermore, the front flashing cover portion 32 is folded at the portion shown by the dashed dotted line in the figure, and the portion of the front flashing cover portion 32 located above the first connecting portion 12 is overlapped with the first connecting portion 12.

[0055] Next, referring to FIG. 7 (3), the gable side end of the gable 10 is covered with the gable cover portion 32 to attach the gable end 31, i.e., end processing of the gable 10 with the gable end 31 is first completed.

[0056] Next, referring to Fig. 8(1), the installation of the siding material 79 and the rear flashing 20 and the alignment of the ridge side end of the rear flashing 20 and the leading ridge water trim 86 are completed from the state of Fig. 7(3). In this state, the rear flashing end 36 is brought close to the leading ridge water trim 86 from below the leading ridge water trim 86, and as shown in Fig. 8(2), the fourth bent portion 38 is hooked onto the lower end 87 of the leading ridge water trim 86 and the rear flashing end 36 is butted against the leading flashing end 31, so that no gap is generated between the leading flashing end 31 and the rear flashing end 36. If the rear flashing end 36 protrudes outward from the outer end of the inclined portion 25 of the rear flashing 20 during the arrangement, the protruding portion is cut off at this point.

[0057] 8(2), nails 39 are driven from the rear flashing cover part 37 toward the leading eaves drip edge 86 to fasten the rear flashing end 36 to the leading eaves drip edge 86. Furthermore, the rear flashing cover part 37 is folded at the part shown by the dashed dotted line in the figure, and the part of the rear flashing cover part 37 located above the second connecting part 22 and the inclined part 25 is overlapped with the second connecting part 22 and the inclined part 25.

[0058] Finally, referring to (3) in Figure 8, the rear flashing cover part 37 covers the eaves side end of the rear flashing 20, completing the installation of the rear flashing end 36, i.e., completing the end processing of the rear flashing 20 by the rear flashing end 36, and completing the end processing of the flashing structure 1.

[0059] With this configuration, processing of the ends of the front flashing 10 and the rear flashing 20 is not required, making end processing easier.

[0060] FIG. 9 is a schematic side view showing the installation state of a girder-direction joint portion of a girder-direction flashing structure according to the second embodiment of the present invention, and corresponds to FIG. 4(4) of the first embodiment. FIG. 10 is an enlarged side view of the rear flashing shown in FIG. 9. FIG. 11 is a plan view of the girder-direction flashing structure shown in FIG. 9.

[0061] With reference to these figures, the flashing structure 2 is obtained by replacing the rear flashing 20 in the flashing structure 1 according to the first embodiment with a rear flashing 40. Note that since the other components (front flashing 10) are the same as those in the flashing structure 1 according to the first embodiment, the description thereof will not be repeated here.

[0062] 10, the rear flashing 40 includes a rear flashing cover body 50 formed by bending a single metal plate, a ventilation member 51, and a drainpipe 59. The rear flashing cover body 50, a lower plate portion 54 of the ventilation member 51 (described later), and the drainpipe 59 are all formed by pressing a single long steel plate having a thickness of 0.35 mm and a longitudinal length (depth direction length) of 1,829 mm.

[0063] The rear rain guard cover body 50 comprises a second connecting portion 42 having a second extension portion 43 extending diagonally upward toward the outer wall portion 75 shown in FIG. 9 and a second bent portion 44 of 10 mm in width with an interior angle of 30° with the second extension portion 43, a sloped portion 45 extending diagonally downward further outward from the outer end of the second extension portion 43 at the same slope as the second connecting portion 42, a hanging portion 46 extending perpendicularly downward from the outer end of the sloped portion 45 relative to the sloped portion 45, and a flange portion 47 extending outward from the lower end of the hanging portion 46 approximately parallel to the second connecting portion 42, and a plurality of ventilation openings 48 formed parallel to the outer end as shown in FIG. 11 near the outer end of the sloped portion. Furthermore, the short side length (left-right length) from the end of the second extension portion 43 on the outer wall portion 75 side to the outer side of the inclined portion 45 is set to 85 mm, the height of the hanging portion 46 is set to 18 mm, and the short side length of the flange portion 47 is set to 30 mm.

[0064] The ventilation member 51 is provided on the underside of the second connecting portion 42 and the inclined portion 45, closer to the end of the outer wall portion 75 than the ventilation opening 48, and is rod-shaped with a length of 1829 mm and a trapezoidal cross section in the inclination direction of the second connecting portion 42 and the inclined portion 45, and includes a ventilation material 53 having a plurality of vent holes 52 penetrating from the surface on the ventilation opening 48 side to the surface on the outer wall portion 75 side, and a lower plate portion 54 laid on the underside of the ventilation material 53 and formed by bending the outer wall portion 75 side so as to raise it up. The ventilation material 53 is made of a plurality of laminated synthetic resin sheets, each having an uneven cross-sectional shape, which are connected to each other by heat fusion to be integrated.

[0065] The drainage cutout 59 is formed by bending the outer wall portion 75 side so as to stand up, and folding back the upper end portion towards the ventilation member 51 side.

[0066] The effect of configuring the rear flashing 40 in this way will be described later.

[0067] 9, the state of mounting the flashing structure 2 to the joint portion 90 in the girder direction (depth direction in FIG. 9) is as follows: first, an opening 85 is provided in the sheathing board 82, and waterproof paper 80 is laid over the outer surface of the exterior wall base 76 and the upper surface of the sheathing board 82, except for the location of the opening 85. The effect of this arrangement will be described later. From this arrangement, the top flashing 10 to the exterior wall material 79 are then constructed.

[0068] After the installation of the rain gutter 10 and the exterior wall material 79, the gutter 59 is positioned and fixed along the outer edge of the opening 85, and then the roof material 83 is placed on top of the gutter 59 and the sheathing board 82 and fixed.

[0069] Finally, the rear flashing cover body 50 with the ventilation member 51 installed is slid onto the upper surface of the roof material 83 toward the outer wall portion 75, the second folded portion 44 is pushed into the gap between the first folded portion 14 and the roof portion 81, the second folded portion 44 is engaged with the first folded portion 14 to connect the front flashing 10 and the rear flashing 40, and the rear flashing 40 is fastened to the sheathing board 82, completing the installation of the flashing structure 2 to the joint portion 90.

[0070] As described above, the sheathing board 82 has an opening 85 formed therein, and the inside and outside communicate with each other through the opening 85. The rear flashing 40 is also configured as described above, and allows ventilation between the inside and outside through the ventilation openings 48 and the vents 52 (ventilation material 53). Therefore, in the joint portion 90 where the flashing structure 2 is installed, an air passage 57 is formed that communicates from the ventilation openings 48 facing the outdoors to the opening 85 facing the inside of the house. Rainwater that has entered the inside of the rear flashing 40 through the ventilation openings 48 is prevented from entering the opening 85 by the drain 59.

[0071] With this configuration, the rear flashing 40 has a ventilation function, which is also favorable from the viewpoint of ventilation.

[0072] FIG. 12 is a schematic side view showing the installation state of a gutter structure according to the third embodiment of the present invention at a joint portion in the inter-beam direction, and corresponds to FIG. 4(4) of the first embodiment. FIG. 13 is an enlarged side view of the rear gutter shown in FIG. 12.

[0073] With reference to these figures, the flashing structure 3 is obtained by replacing the rear flashing 20 in the flashing structure 1 according to the first embodiment with a rear flashing 60, and is attached to a joint portion 90 in the inter-beam direction (depth direction in FIG. 12). Note that since the other components (front flashing 10) are the same as those in the flashing structure 1 according to the first embodiment, the description thereof will not be repeated here.

[0074] Referring to Figure 13, rear flashing 60 is formed by bending a single long steel plate having a thickness of 0.35 mm and a longitudinal length (depth direction length) of 1,829 mm by pressing, and is provided with a second connecting portion 62 having a second bent portion 64 whose interior angle with a second extension portion 63 extending horizontally toward the outer wall portion 75 side shown in Figure 12 is set at 30°, a horizontal portion 65 extending horizontally further outward from the outer end of the second extension portion 63, a folded portion 68 folded back from the outer end of the horizontal portion 65, a hanging portion 66 extending vertically downward from the outer wall portion 75 side end of the folded portion 68 to the horizontal portion 65, and a flange portion 67 extending outward from the lower end of the hanging portion 66 approximately parallel to the horizontal portion 65. The short side length (left-right length) from the end of second extension portion 63 on the outer wall portion 75 side to the end on the outer side of horizontal portion 65 is set to 55 mm, the short side length of folded-back portion 68 is set to 17 mm, the height of hanging portion 66 is set to 23 mm, and the short side length of flange portion 67 is set to 90 mm. The effects of this configuration will be described later.

[0075] As for the state of attachment of the flashing structure 3 to the joint portion 90, refer to FIG. 12. First, the flashing structure 3 is attached to the joint portion 90 in the inter-beam direction.

[0076] An exterior wall base 76 is installed on the exterior wall section 75 of the main house that extends vertically at the joint section 90, and a sheathing board 82 that extends horizontally outward from the middle of the exterior wall section 75 is installed on the roof section 81 of the lower house, and waterproof paper 80 is laid across the outer surface of the exterior wall base 76 and the upper surface of the sheathing board 82. From this arrangement, the top flashing 10 to the exterior wall material 79 are constructed, and further a coping 84 is placed and fixed along the end of the sheathing board 82 on the exterior wall section 75 side.

[0077] Here, the rear flashing 60 is slid onto the upper surface of the sheathing board 82 and the waterproof paper 80 toward the exterior wall portion 75, and the second folded portion 64 is pushed into the gap between the first folded portion 14 and the roof portion 81 (cap board 84), and the second folded portion 64 is interlocked with the first folded portion 14 to connect the front flashing 10 and the rear flashing 60.

[0078] Finally, the rear flashing 60 is fastened to the sheathing board 82 via the hanging clip 69 attached to the outer end of the flange portion 67 of the rear flashing 60, completing the installation of the flashing structure 3 to the joint portion 90 in the inter-beam direction. The rear flashing 60 also functions as a backing board, and after the installation of the flashing structure 3 is complete, the roof material 83 is inserted between the folded portion 68 and the flange portion 67 and fastened to the sheathing board 82.

[0079] With this configuration, the rain gutter 10 used for construction in the longitudinal direction can also be used for construction in the span direction, further improving construction efficiency.

[0080] In the above-described embodiments, the first bent portion and the second bent portion are formed at a specific angle, but they may be formed at another angle as long as they can be engaged with each other.

[0081] In addition, in each of the above embodiments, the front and rear flashings are connected via the first and second bent portions, but they may be connected by other connecting structures.

[0082] Furthermore, in each of the above embodiments, the first connecting portion includes the first extension portion and the first bent portion, and the second connecting portion includes the second extension portion and the second bent portion, but other configurations are possible as long as the second connecting portion can be connected to the first connecting portion after the construction of the flashing and the exterior wall portion. Also, it is possible to have only a connecting structure and not have the first extension portion and the second extension portion.

[0083] Furthermore, in each of the above-described embodiments, the front and rear flashing ends are used for the end processing, but the end processing may be performed by bending the end or by using other members without using these.

[0084] Furthermore, in the above first embodiment, the rear flashing end is installed to butt up against the front flashing end, but if the roof (front eaves trim) is inclined, the rear flashing end is inclined along the slope of the roof and partially covers the front flashing end so that no gap is created between the front flashing end and the rear flashing end. In this case, the fourth bent part of the rear flashing end is hooked onto the bottom end of the front eaves trim and the bottom end of the front flashing end.

[0085] Furthermore, in the first and third embodiments described above, a capping board is used, but an L-shaped metal fitting may be used instead of the capping board.

[0086] Furthermore, in the second embodiment, the ventilation material has a trapezoidal cross section, but it may have another rectangular shape.

[0087] Furthermore, in the above second embodiment, the ventilation material had a specific configuration, but other configurations are also acceptable as long as the configuration has multiple ventilation holes penetrating from the surface on the ventilation port side to the surface on the outer wall side.

[0088] Furthermore, in the above third embodiment, the rear flashing is fastened via a retaining clip, but it may be fastened directly.

[0089] Furthermore, in the third embodiment, the rear flashing includes a drain, but this is not essential.

[0090] Furthermore, in each of the above-described embodiments, the front and rear flashings are formed of a specific material, with specific dimensions and with a specific shape, but they may be formed of other materials, with other dimensions and with other shapes.

[0091] Furthermore, in each of the above embodiments, the rain gutter structure is used in a construction method in which construction of the roof section is completed after construction of the exterior wall section is completed, but even if it is used in a conventional construction method in which construction of the exterior wall section is completed after construction of the roof section is completed, it does not hinder the conventional construction method. [Explanation of symbols]

[0092] 1… Rain restraint structure 2… Rain restraint structure 3…Rain restraint structure 10...Rain protection 11…Close to the exterior wall base 12...1st connection part 13...First extension part 14...First bending part 20…Rear rain guard 21…Roof adjacent area 22…Second connection part 23…Second extension section 24…Second bending part 25…Slope part 26…Drooping part 27…Flange section 31...Rain protection end 32…Front rain gutter cover 33…Third bending part 34…Nail driving section 36...Rear rain guard end 37…Rear rain cover 38…4th bending part 40…Rear rain guard 41…Roof adjacent area 42…Second connection part 43…Second extension part 44…Second bending part 45…Slope part 46…Drooping part 47…Flange section 48…Ventilation vent 50…Rear rain cover body 51...Ventilation parts 52…Ventilation hole 53...Ventilation material 54…Lower plate part 60…Rear rain guard 61…Roof adjacent area 62…Second connection part 63…Second extension part 64…Second bending part 65…Horizontal part 66…Drooping part 67…Flange section 68…Folded part In addition, the same symbols in each drawing indicate the same or corresponding parts.

Claims

1. A rain gutter structure to be installed at a joint between an outer wall of a main building extending vertically and a roof of a lower building extending outward from the middle of the outer wall, a top flashing including an exterior wall base adjacent portion extending vertically upward and used for attaching the exterior wall portion to the exterior wall base, and a first connecting portion formed continuously from a lower end portion of the exterior wall base adjacent portion; a rear flashing including a roof adjacent portion used for attachment to the roof portion and a second connecting portion formed continuously from an end portion of the roof adjacent portion on the outer wall portion side; The second connecting portion is connectable to the first connecting portion during construction of the rear flashing after construction of the front flashing and the exterior wall portion, The first connecting portion includes a first extending portion extending outward and a first bent portion formed at an end portion of the first extending portion on the outer side and folded downward, The second connecting portion includes a second extending portion extending toward the outer wall portion and a second bent portion formed at an end portion of the second extending portion on the outer wall portion side and folded back toward the upper side, The second bent portion is pushed into a gap between the first bent portion and the roof portion to engage and connect with the first bent portion, The rain gutter is formed by bending a single metal plate, The exterior wall foundation adjacent portion; The first connecting portion includes the first bent portion, the inner angle between the first extending portion and the first extending portion extending obliquely downward on the outer side is set to 30°, The rear flashing is formed by bending a single metal plate, The second connecting portion includes the second bent portion, and the inner angle between the second bent portion and the second extending portion extending obliquely upward on the outer wall portion side is set to 30°; A rain gutter structure comprising a roof adjacent portion, the roof adjacent portion including an inclined portion extending diagonally downward from the outer end of the second extension portion at the same inclination as the second extension portion, a hanging portion extending perpendicularly downward from the outer end of the inclined portion relative to the inclined portion, and a flange portion extending from the lower end of the hanging portion to the outer side approximately parallel to the second connecting portion.

2. A rain gutter structure to be installed at a joint between an outer wall of a main building extending vertically and a roof of a lower building extending outward from the middle of the outer wall, a top flashing including an exterior wall base adjacent portion extending vertically upward and used for attaching the exterior wall portion to the exterior wall base, and a first connecting portion formed continuously from a lower end portion of the exterior wall base adjacent portion; a rear flashing including a roof adjacent portion used for attachment to the roof portion and a second connecting portion formed continuously from an end portion of the roof adjacent portion on the outer wall portion side; The second connecting portion is connectable to the first connecting portion during construction of the rear flashing after construction of the front flashing and the exterior wall portion, The first connecting portion includes a first extending portion extending outward and a first bent portion formed at an end portion of the first extending portion on the outer side and folded downward, The second connecting portion includes a second extending portion extending toward the outer wall portion and a second bent portion formed at an end portion of the second extending portion on the outer wall portion side and folded back toward the upper side, The second bent portion is pushed into a gap between the first bent portion and the roof portion to engage and connect with the first bent portion, The rain gutter is formed by bending a single metal plate, The exterior wall foundation adjacent portion; The first connecting portion includes the first bent portion, the inner angle between the first extending portion and the first extending portion extending obliquely downward on the outer side is set to 30°, The rear rain guard includes a rear rain guard cover body formed by bending a single metal plate, and a ventilation member. The rear rain guard cover body includes the second connecting portion having the second bent portion, the inner angle between the second bent portion and the second extending portion extending obliquely upward from the outer wall portion side being set to 30°; a roof portion adjacent to the roof, the roof portion including an inclined portion extending diagonally downward from the outer end of the second extension portion at the same inclination as the second connecting portion, a hanging portion extending perpendicularly downward from the outer end of the inclined portion relative to the inclined portion, and a flange portion extending from a lower end of the hanging portion to the outer side substantially parallel to the second connecting portion; a plurality of ventilation openings formed in parallel to the outer end of the inclined portion near the outer end of the inclined portion; The ventilation member is installed on a lower surface of the second connecting portion and the inclined portion, on a side of an end portion closer to the outer wall portion than the ventilation opening, A ventilating material having a rod shape with a cross section in a direction of inclination of the second connecting portion and the inclined portion having a rectangular shape, the ventilating material having a plurality of air holes penetrating from a surface on the ventilation port side to a surface on the outer wall side; A rain gutter structure comprising a lower plate portion made of a single metal plate laid on the underside of the ventilation material.

3. A rain gutter structure to be installed at a joint between an outer wall of a main building extending vertically and a roof of a lower building extending outward from the middle of the outer wall, a top flashing including an exterior wall base adjacent portion extending vertically upward and used for attaching the exterior wall portion to the exterior wall base, and a first connecting portion formed continuously from a lower end portion of the exterior wall base adjacent portion; a rear flashing including a roof adjacent portion used for attachment to the roof portion and a second connecting portion formed continuously from an end portion of the roof adjacent portion on the outer wall portion side; The second connecting portion is connectable to the first connecting portion during construction of the rear flashing after construction of the front flashing and the exterior wall portion, The first connecting portion includes a first extending portion extending outward and a first bent portion formed at an end portion of the first extending portion on the outer side and folded downward, The second connecting portion includes a second extending portion extending toward the outer wall portion and a second bent portion formed at an end portion of the second extending portion on the outer wall portion side and folded back toward the upper side, The second bent portion is pushed into a gap between the first bent portion and the roof portion to engage and connect with the first bent portion, The rain gutter is formed by bending a single metal plate, The exterior wall foundation adjacent portion; The first connecting portion includes the first bent portion, the inner angle between the first extending portion and the first extending portion extending obliquely downward on the outer side is set to 30°, The rear flashing is formed by bending a single metal plate, The second connecting portion includes the second bent portion, and the interior angle between the second bent portion and the second extending portion extending horizontally toward the outer wall portion is set to 30°; a roof adjacent portion including a horizontal portion extending horizontally further outward from the outer end of the second extension portion, a folded portion folded back from the outer end of the horizontal portion, a hanging portion extending vertically downward from the outer wall end of the folded portion relative to the horizontal portion, and a flange portion extending outward from the lower end of the hanging portion approximately parallel to the horizontal portion.

4. The rain guard further includes a front rain guard end formed by cutting and bending a single metal plate, and a rear rain guard end formed by cutting and bending a single metal plate, The front gutter end includes a front gutter cover portion having a rectangular shape, a third bent portion that is folded back from a lower end of the front gutter cover portion toward the upper side of the front gutter side, and a nailing portion that extends from one of the side ends of the front gutter cover portion in a direction opposite to the third bent portion, 4. The rain gutter structure according to claim 1, wherein the rear rain gutter end includes a rear rain gutter cover portion having a rectangular shape and a fourth folded portion that folds back from a lower end portion of the rear rain gutter cover portion toward an upper side of the rear rain gutter side.

5. A rain gutter structure to be installed at a joint between an outer wall of a main building extending vertically and a roof of a lower building extending outward from the middle of the outer wall, a top flashing including an exterior wall base adjacent portion extending vertically upward and used for attaching the exterior wall portion to the exterior wall base, and a first connecting portion formed continuously from a lower end portion of the exterior wall base adjacent portion; a rear flashing including a roof adjacent portion used for attachment to the roof portion and a second connecting portion formed continuously from an end portion of the roof adjacent portion on the outer wall portion side; The second connecting portion is connectable to the first connecting portion during construction of the rear flashing after construction of the front flashing and the exterior wall portion, The rain guard further includes a front rain guard end formed by cutting and bending a single metal plate, and a rear rain guard end formed by cutting and bending a single metal plate, The front gutter end includes a front gutter cover portion having a rectangular shape, a third bent portion that is folded back from a lower end of the front gutter cover portion toward the upper side of the front gutter side, and a nailing portion that extends from one of the side ends of the front gutter cover portion in a direction opposite to the third bent portion, The rear flashing end includes a rear flashing cover portion having a rectangular shape, and a fourth folded portion that folds back from a lower end portion of the rear flashing cover portion toward the upper side of the rear flashing side.

6. The first connecting portion includes a first extending portion extending outwardly and a first bent portion formed at an end portion of the first extending portion on the outward side and folded downwardly; The second connecting portion includes a second extending portion extending toward the outer wall portion and a second bent portion formed at an end portion of the second extending portion on the outer wall portion side and folded back toward the upper side, The rain flashing structure according to claim 5 , wherein the second bent portion is pushed into a gap between the first bent portion and the roof portion, thereby engaging and connecting with the first bent portion.

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