Exterior wall structure and building with exterior wall structure

Abstract

The exterior wall structure (2) is an exterior wall structure (2) of a building having an exterior wall (10) on which a shed (20) is provided, and includes a pillar (11) constituting the exterior wall (10), a first base material (12) attached to the pillar (11), a second base material (13) attached to the pillar (11) at a position lower than the first base material (12), an exterior material (14) attached to the first base material (12), a shed shaft member (21) constituting the shed (20), and a water drainage member (30) provided between the exterior material (14) and the shed shaft member (21). The first base material (12) is attached to the pillar (11) at a position higher than the shed shaft member (21). The second base material (13) is attached to the pillar (11) at a position lower than the shed shaft member (21).

Description

[Technical field]

[0001] The present disclosure relates to an exterior wall structure near a eaves and a building having an exterior wall structure. [Background technology]

[0002] The technology described in Patent Document 1 is known as an exterior wall structure near the roof. In the building described in Patent Document 1, the structure of the exterior wall of the second floor that intersects with the eaves (referred to as the roof of the first floor in the document) is disclosed. The exterior wall of the second floor is provided with a water-repellent member (referred to as a water-repellent board in the document). The exterior material (referred to as the exterior wall material in the document) is attached to the pillars or studs via a waterproof sheet. The water-repellent member is provided near the bottom end of the exterior material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 09-088275 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the exterior wall that intersects with the eaves has a base material. In the exterior wall structure with a base material, there is room for improvement in workability. [Means for solving the problem]

[0005] (1) The exterior wall structure that solves the above problem is an exterior wall structure of a building that has an exterior wall on which a shed is provided, and includes a column that constitutes the exterior wall, a first base material attached to the column, a second base material attached to the column at a position lower than the first base material, an exterior material attached to the first base material, a shed axis member that constitutes the shed, and a water drainage member provided between the exterior material and the shed axis member, where the first base material is attached to the column at a position higher than the shed axis member, and the second base material is attached to the column at a position lower than the shed axis member. With this configuration, the freedom of construction of the exterior wall can be increased compared to when base materials are provided along the columns from the top to the bottom of the shed.

[0006] (2) In the exterior wall structure described in (1) above, the first base material is attached to the pillar so as to contact the outer surface of the pillar. With this configuration, the first base material can be installed more easily than when the first base material is disposed between two pillars.

[0007] (3) In the exterior wall structure described in (1) or (2) above, the drainage member includes an upper drainage portion extending in the vertical direction, a middle drainage portion extending from the lower end of the upper drainage portion, and a lower drainage portion extending from the lower end of the middle drainage portion, the upper drainage portion being located below the lower end surface of the first base material in the vertical direction, the outer surface of the upper drainage portion being located at the same place as the outer surface of the first base material in the horizontal direction or on the indoor side of the outer surface of the first base material, and the lower drainage portion being located above the shed. With this configuration, the upper drainage portion can receive more of the water flowing on the first base material than when the outer surface of the upper drainage portion is located outside the outer surface of the first base material. Then, the lower drainage portion can guide the water to the shed.

[0008] (4) In the exterior wall structure described in (3) above, a boundary waterproof sheet is further provided which is laid from the first base material to the roof axis member, and an upper portion of the boundary waterproof sheet is disposed between the upper portion of the water drainage and the pillar. With this configuration, when water penetrates inside the water drainage member, the water can be prevented from penetrating inside the pillar.

[0009] (5) In the exterior wall structure described in any one of (1) to (4) above, a flashing support member is further provided for supporting the flashing member, and the flashing support member is fixed to the column at a position lower than the lower end surface of the first base material. With this configuration, the base material is provided along the column from the top to the bottom of the roof, and the flashing support member can be provided on the base material, which increases the degree of freedom in construction of the exterior wall.

[0010] (6) A building that solves the problems has an exterior wall structure according to any one of (1) to (5) above. This structure allows for greater freedom in the construction of the building. Effect of the Invention

[0011] The exterior wall structure and building disclosed herein allow for greater freedom in construction. [Brief description of the drawings]

[0012] [Figure 1] FIG. [Diagram 2] 2 is a cross-sectional view of the exterior wall structure taken along line 2-2 in FIG. 1. [Diagram 3] FIG. 4 is a cross-sectional view of an exterior wall structure of an exterior wall of a first reference example. [Figure 4] FIG. 11 is a cross-sectional view of an exterior wall structure of an exterior wall of a second reference example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] <Buildings> A building 1 and an exterior wall structure 2 of the building 1 will be described with reference to Fig. 1 to Fig. 4. In this embodiment, the outside refers to a place closer to the outside of the room in the horizontal direction relative to the target. The inside refers to a place closer to the inside of the room in the horizontal direction relative to the target.

[0014] 1, the building 1 includes an exterior wall 10 and a shed 20. In this embodiment, the building 1 further includes a roof 50. In the building 1 of this embodiment, the shed 20 is provided on the exterior wall 10.

[0015] The roof 50 covers the interior space within the building 1. The shed 20 is provided in the middle of the exterior wall 10 in the vertical direction DZ. The shed 20 may be inclined. Specifically, the shed 20 extends diagonally downward outward relative to the exterior wall 10. The shed 20 may extend horizontally. The shed 20 may form the roof of an entrance porch. The shed 20 may form the roof of a deck. The shed 20 may be configured as eaves provided over a window or door. The shed 20 may form the roof of a single-story portion of the building 1. The single-story portion refers to a one-story portion of the building 1 that is lower in height than the two-story portion.

[0016] The building 1 includes an exterior wall structure 2 in the vicinity of a shed 20. The exterior wall structure 2 in this embodiment refers to a structure of an exterior wall 10 that is provided so as to intersect with the shed 20. Hereinafter, as an example of the exterior wall structure 2, a structure of a second floor exterior wall 10 that is provided so as to intersect with the shed 20 will be described.

[0017] <Outer wall structure> The exterior wall structure 2 comprises a pillar 11 constituting an exterior wall 10, a first base material 12 attached to the pillar 11, and a second base material 13 attached to the pillar 11 at a position lower than the first base material 12. The exterior wall structure 2 further comprises an exterior material 14 attached to the first base material 12, and a shed axis member 21 constituting a shed 20. The exterior wall structure 2 further comprises a water drainage member 30 provided between the exterior material 14 and the shed axis member 21. The exterior wall structure 2 also comprises a water drainage support member 35.

[0018] The pillars 11 include main pillars that constitute the frame structure of the building 1, and partition pillars that are arranged between the main pillars. The main pillars and partition pillars are made of wood. The partition pillars are thinner than the main pillars. The main pillars may be continuous pillars that extend from the first floor to the second floor of the building 1. The main pillars may be pillars that are erected perpendicular to the cross members 15 that are arranged in the middle part of the building 1 in the vertical direction DZ. In this embodiment, the upper end of the pillar 11 extends to the roof 50 that covers the second floor. The lower end of the pillar 11 extends to the cross member 15. The lower end of the pillar 11 is located below the inner end 21A of the roof shaft member 21.

[0019] Two adjacent columns 11 may be connected by a column connecting member 16 extending horizontally. The column connecting member 16 is provided on the inside of the outer surface 11A of the column 11. The column connecting member 16 is disposed between the side surfaces of the two columns 11. In another example, the column connecting member 16 is provided so as to penetrate multiple columns 11.

[0020] <Loft> The shed 20 comprises a shed shaft member 21, a shed base material 22 (also called a sheathing board) provided on the shed shaft member 21, and a roof material 23 provided on the shed base material 22. The roof material 23 includes metal roof material, ceramic roof material, and concrete roof material. In the case of a shed 20 extending horizontally, the roof material 23 includes asphalt and concrete. In this embodiment, the roof material 23 is arranged so that the lower end of the roof material 23 rests on the upper end of the other roof material 23. The upper part of the roof material 23 is placed on a positioning member 24 (also called a "tile batten"). The upper part of the roof material 23 is fixed to the shed base material 22 via the positioning member 24 by nails. A roof waterproof sheet 25 is laid on the upper surface of the shed base material 22.

[0021] The roof shaft member 21 includes a gradient beam and a rafter. The gradient beam and the rafter are made of wood or metal members. The roof shaft member 21 also includes a horizontal member that extends horizontally. The horizontal member is made of wood or metal members.

[0022] The lower roof shaft member 21 has an inner end 21A that is disposed near the pillar 11. The inner end 21A of the lower roof shaft member 21 is fixed to the shaft support member 26 by a connecting member while being placed on the shaft support member 26. The connecting member includes a bolt, a nail, a rivet, and a fastening metal fitting.

[0023] The shaft support member 26 extends horizontally. The shaft support member 26 is provided across multiple pillars 11. The shaft support member 26 is attached to the pillars 11 via the second base material 13. The shaft support member 26 is fixed to the pillars 11 with nails. The shaft support member 26 is fixed to the pillars 11 at a position lower than the inner end 21A of the lower roof shaft member 21.

[0024] <First base material, second base material, and exterior material> The first base material 12 is composed of a wooden plate-like member. The first base material 12 is attached to the pillar 11 at a position above the roof axis member 21. The first base material 12 is attached to the pillar 11 so as to contact the outer surface 11A of the pillar 11. The first base material 12 is arranged so as to span multiple pillars 11. The first base material 12 is then attached to the pillar 11 with nails.

[0025] A wall waterproof sheet 17 is attached to the outer surface 12A of the first base material 12. A lower end portion 17A of the wall waterproof sheet 17 covers the outer surface 31A of the upper drainage portion 31 of the drainage member 30. The lower end portion 17A of the wall waterproof sheet 17 is fixed to the upper drainage portion 31 of the drainage member 30 by an adhesive or an adhesive member.

[0026] The exterior material 14 is attached to the outside of the first base material 12. The exterior material 14 is attached to the first base material 12 via a horizontal member (not shown) that is installed horizontally. The horizontal member is also called a furring strip. The horizontal member is attached to the first base material 12 via a wall waterproof sheet 17. The horizontal member is made of wood. The exterior material 14 includes metal siding, ceramic siding, wood siding, concrete siding, and resin siding.

[0027] The second base material 13 is composed of a wooden plate-shaped member. The second base material 13 is attached to the pillar 11 at a position lower than the roof shaft member 21. The second base material 13 is attached to the pillar 11 so as to contact the outer surface 11A of the pillar 11. The second base material 13 is arranged so as to span multiple pillars 11. The second base material 13 is then attached to the pillar 11 with nails.

[0028] The second base material 13 is located below the eaves 20 and inside the exterior wall 10. For this reason, the exterior material 14 cannot be attached to the second base material 13. The second base material 13 reinforces the exterior wall 10. Specifically, the second base material 13 is provided across multiple pillars 11 to reinforce the exterior wall 10.

[0029] The multiple pillars 11 are connected to each other by a first base material 12 arranged on the roof shaft member 21, and are also connected to each other by a second base material 13 arranged below the roof shaft member 21. This structure increases the strength of the exterior wall 10.

[0030] <Drainage parts> The drainage member 30 is made of a resin or metal plate. The drainage member 30 includes an upper drainage portion 31 extending in the vertical direction DZ, a middle drainage portion 32 extending from the lower end of the upper drainage portion 31, and a lower drainage portion 33 extending from the lower end of the middle drainage portion 32. The middle drainage portion 32 extends at an angle from the lower end of the upper drainage portion 31. The lower drainage portion 33 extends downward from the lower end of the middle drainage portion 32. The drainage member 30 is disposed near the lower end of the exterior material 14 as described above.

[0031] The water drainage member 30 is supported by the water drainage support member 35. A part of the water drainage middle part 32 of the water drainage member 30 is fixed to the water drainage support member 35. When the water drainage member 30 is supported by the water drainage support member 35, each part of the water drainage member 30 is arranged as follows. The water drainage upper part 31 is located below the lower end surface 12B of the first base material 12 in the vertical direction DZ. The outer surface 31A of the water drainage upper part 31 is located at the same place as the outer surface 12A of the first base material 12 in the horizontal direction, or on the indoor side of the outer surface 12A of the first base material 12. The water drainage lower part 33 is located on the eaves 20. Specifically, the water drainage lower part 33 is arranged on the roof material 23 that is closest to the exterior wall 10 in the eaves 20. The water drainage middle part 32 is configured to be inclined in the same manner as the inclination of the roof material 23 when the water drainage member 30 is attached to the exterior wall 10.

[0032] The exterior wall structure 2 may be provided with a waterproof member 37. The waterproof member 37 is provided inside the water drainage member 30. The waterproof member 37 extends from the water drainage support member 35 to the roof material 23. The waterproof member 37 is made of a resin or metal plate. The upper end of the waterproof member 37 is fixed to the water drainage support member 35. The lower end of the water drainage support member 35 is fixed to the roof material 23 via a sealant 38.

[0033] The water drainage support member 35 supports the water drainage member 30 and the waterproofing member 37. The water drainage support member 35 is fixed to the pillar 11 at a position lower than the lower end surface 12B of the first base material 12 and at a position higher than the roof base material 22. The water drainage support member 35 has a first side surface 35A that contacts the pillar 11, a second side surface 35B to which the waterproofing member 37 is attached, and an upper surface 35C on which the water drainage member 30 is placed.

[0034] <Boundary waterproof sheet> The exterior wall structure 2 further includes a boundary waterproof sheet 40 laid from the lower end of the first base material 12 to the roof axis member 21. The upper part of the boundary waterproof sheet 40 is disposed between the upper water drainage part 31 and the pillar 11.

[0035] The boundary waterproof sheet 40 may be guided by an auxiliary panel 41. The auxiliary panel 41 is attached to the pillar 11 and the roof shaft member 21 so as to span from the lower end of the first base material 12 to the roof shaft member 21. The auxiliary panel 41 is made of metal or resin. The boundary waterproof sheet 40 is laid along the outer surface of the auxiliary panel 41.

[0036] <Operation of the embodiment> The operation of this embodiment will be described with reference to FIGS. 3 shows an exterior wall structure 2 of a first reference example. In this example, a base material 81 is provided on the outer surface 11A of the column 11. The base material 81 extends in the vertical direction DZ from a position above the shed 20 to a position below the shed 20. In the case of such an exterior wall structure 2, the shed shaft member 21 and shaft support member 26 cannot be attached until the base material 81 is attached to the column 11. For this reason, the construction of the shed 20 is performed after the base material 81 is attached.

[0037] FIG. 4 shows an exterior wall structure 2 of the second reference example. In this example, a base material 82 is provided between two columns 11. Specifically, the base material 82 is attached between the two columns 11 so that the outer surface 82A of the base material 82 is flush with the outer surface 11A of the column 11. The base material 82 extends from a position above the shed 20 to a position below the shed 20 in the vertical direction DZ. Furthermore, an additional base material 83 is attached to the base material 82 at a position above the shed 20. The shaft support member 26 is fixed to the column 11. In the case of such an exterior wall structure 2, the shed shaft member 21 can be attached even before the base material 82 is attached to the column 11. However, since it is necessary to attach the base material 82 between the two columns 11, it requires a lot of work.

[0038] In this embodiment, the first base material 12 and the second base material 13 are separately attached to the outer surface 11A of the pillar 11. Then, the shaft support member 26 is fixed to the pillar 11 via the second base material 13 at a position lower than the first base material 12. Due to this structure, the shaft support member 26 can be attached to the pillar 11 before the first base material 12 is attached. Therefore, construction of the shed 20 on the pillar 11 can be advanced regardless of the construction status of the first base material 12.

[0039] <Effects of the embodiment> (1) The exterior wall structure 2 comprises a pillar 11, a first base material 12, a second base material 13, an exterior material 14 attached to the first base material 12, a roof axis member 21, and a water drainage member 30. The first base material 12 is attached to the pillar 11 at a position above the roof axis member 21. The second base material 13 is attached to the pillar 11 at a position below the roof axis member 21. This configuration allows for greater freedom in construction of the exterior wall structure 2 compared to a case in which base materials 81, 82 are provided along the pillar 11 from the top to the bottom of the roof 20.

[0040] (2) The first base material 12 is attached to the pillar 11 so as to contact the outer surface 11A of the pillar 11. According to this configuration, the first base material 12 can be installed more easily than when the first base material 12 is disposed between two pillars 11.

[0041] (3) The water draining member 30 includes an upper water draining portion 31, a middle water draining portion 32, and a lower water draining portion 33. The upper water draining portion 31 is located below the lower end surface 12B of the first base material 12 in the vertical direction DZ. The outer surface 31A of the upper water draining portion 31 is located at the same place as the outer surface 12A of the first base material 12 in the horizontal direction, or on the indoor side of the outer surface 12A of the first base material 12. The lower water draining portion 33 is located above the shed 20. According to this configuration, the upper water draining portion 31 can receive more water flowing on the first base material 12 than when the outer surface 31A of the upper water draining portion 31 is located outside the outer surface 12A of the first base material 12. The lower water draining portion 33 can guide the water to the shed 20.

[0042] (4) The exterior wall structure 2 is equipped with a boundary waterproof sheet 40. The boundary waterproof sheet 40 is laid from the first base material 12 to the roof axis member 21. The upper part of the boundary waterproof sheet 40 is disposed between the upper water drainage member 31 and the pillar 11. With this configuration, when water penetrates inward beyond the water drainage member 30, the water can be prevented from penetrating inward beyond the pillar 11.

[0043] (5) The exterior wall structure 2 includes a water drainage support member 35 that supports the water drainage member 30. The water drainage support member 35 is fixed to the column 11 at a position lower than the lower end surface 12B of the first base material 12. This configuration allows for a higher degree of freedom in the construction of the exterior wall structure 2 than when the base material 81 is provided along the column 11 from the top to the bottom of the shed 20 and the water drainage support member 35 is provided on the base material 81. For example, the water drainage support member 35 can be attached to the column 11 after the first base material 12 is attached to the column 11. Conversely, the water drainage support member 35 can be attached to the column 11 after the water drainage support member 35 is attached to the column 11.

[0044] (6) The building 1 includes the exterior wall structure 2 of any one of (1) to (5) above. With this configuration, the degree of freedom in the construction of the building 1 can be increased. <Modification> The above embodiment is an example of the form that the building 1 and the exterior wall structure 2 can take, and is not intended to limit the form. The building 1 and the exterior wall structure 2 can take a form different from the form exemplified in the above embodiment. Examples of such a form include a form in which a part of the configuration of the embodiment is replaced, changed, or omitted, or a form in which a new configuration is added to the embodiment. Modified examples of the embodiment are shown below.

[0045] (1) In the embodiment, the lower roof shaft member 21 is fixed to the shaft support member 26. In contrast, the lower roof shaft member 21 may be fixed directly to the pillar 11. (2) In the embodiment, the shed 20 extends diagonally downward outward relative to the exterior wall 10. In contrast, the shed 20 may have a first inclined portion that slopes downward to the left and a second inclined portion that slopes downward to the right when viewed from the front.

[0046] (3) In the embodiment, the first base material 12 and the second base material 13 are provided on the outer surface 11A of the pillar 11. In contrast, either the first base material 12 or the second base material 13 may be provided between the pillars 11. Furthermore, both the first base material 12 and the second base material 13 may be provided between the pillars 11. Even in this case, the effect of embodiment (1) is achieved.

[0047] (4) In the embodiment, the shaft support member 26 is attached to the pillar 11 via the second base material 13. Alternatively, the shaft support member 26 may be attached directly to the pillar 11. In this case, the second base material 13 is fixed to the pillar 11 at a position lower than the shaft support member 26.

[0048] This specification discloses the following techniques. [Appendix 1] The technology of Appendix 1 is an exterior wall structure of a building that includes an exterior wall on which a shed is provided. The exterior wall structure includes a pillar that constitutes the exterior wall, a first base material attached to the pillar, a second base material attached to the pillar at a position lower than the first base material, an exterior material attached to the first base material, a shed axis member that constitutes the shed, and a water drainage member provided between the exterior material and the shed axis member. The first base material is attached to the pillar at a position higher than the shed axis member. The second base material is attached to the pillar at a position lower than the shed axis member.

[0049] [Appendix 2] In the exterior wall structure described in Appendix 1, the first base material is attached to the pillar so as to contact the outer surface of the pillar.

[0050] [Appendix 3] In the exterior wall structure described in Appendix 1, the water drainage member comprises an upper water drainage portion extending in the vertical direction, a middle water drainage portion extending from the lower end of the upper water drainage portion, and a lower water drainage portion extending from the lower end of the middle water drainage portion. The upper water drainage portion is located below the lower end surface of the first base material in the vertical direction. The outer surface of the upper water drainage portion is located at the same place as the outer surface of the first base material in the horizontal direction, or on the indoor side of the outer surface of the first base material. The lower water drainage portion is located above the eaves.

[0051] [Appendix 4] In the exterior wall structure described in Appendix 3, the exterior wall structure further includes a boundary waterproof sheet laid from the first base material to the roof axis member. An upper portion of the boundary waterproof sheet is disposed between the upper portion of the water drainage and the column.

[0052] [Appendix 5] In the exterior wall structure described in Appendix 1, the exterior wall structure further includes a water drainage support member that supports the water drainage member. The water drainage support member is fixed to the pillar at a position lower than a lower end surface of the first base material. [Appendix 6] The technology of Supplementary Note 6 is a building equipped with an exterior wall structure according to any one of Supplementary Notes 1 to 5. [Explanation of symbols]

[0053] DZ...vertical direction, 1...building, 2...exterior wall structure, 10...exterior wall, 11...column, 11A...exterior surface, 12...first base material, 12A...exterior surface, 13...second base material, 14...exterior material, 20...roof, 21...roof axis member, 30...water drainage member, 31...upper part of water drainage, 31A...exterior surface, 32...middle part of water drainage, 33...lower part of water drainage, 35...water drainage support member, 40...boundary waterproof sheet, 82A...exterior surface.

Claims

1. An exterior wall structure of a building having an exterior wall on which a shed is provided, A column constituting the exterior wall; A first base material attached to the pillar; A second base material attached to the pillar at a position lower than the first base material; An exterior material attached to the first base material; A shed shaft member constituting the shed; A water drainage member is provided between the exterior material and the roof shaft member, The first base material is attached to the pillar at a position above the roof shaft member, The second base material is attached to the column at a position lower than the shed shaft member. External wall structure.

2. The first base material is attached to the pillar so as to contact an outer surface of the pillar. The exterior wall structure according to claim 1 .

3. The draining member includes an upper draining portion extending in the vertical direction, a middle draining portion extending from a lower end of the upper draining portion, and a lower draining portion extending from a lower end of the middle draining portion. The water draining upper portion is located below the lower end surface of the first base material in the vertical direction, The outer surface of the drainage upper portion is located horizontally at the same place as the outer surface of the first base material or on the indoor side of the outer surface of the first base material, The drainage lower part is located above the shed, The exterior wall structure according to claim 1 .

4. Further provided is a boundary waterproof sheet laid from the first base material to the shed axis member, The upper part of the boundary waterproof sheet is disposed between the upper part of the water drainage and the pillar. The exterior wall structure according to claim 3.

5. Further provided is a drainage support member for supporting the drainage member, The water drainage support member is fixed to the column at a position lower than the lower end surface of the first base material, The exterior wall structure according to claim 1 .

6. A building comprising the exterior wall structure according to any one of claims 1 to 5.

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