JP2013174095A - Wall drainage structure in building - Google Patents

Abstract

To provide a wall drainage structure in a building capable of preventing water entering a hollow portion of a wall material from entering the building.
The balcony of the building is provided with a balcony waist wall portion surrounding the balcony space BS. The balcony waist wall portion includes an inner wall surface member 33 provided with a hollow portion 33b provided facing the balcony space BS and extending vertically, and a base frame 40 provided below the inner wall surface material 33. In the balcony waist wall portion, water that has flowed into the gap 67 between the inner wall surface material 33 and the base frame 40 through the hollow portion 33 b flows from the gap 67 toward the waist wall frame 31 in the thickness direction of the inner wall surface material 33. And a water draining member 60 for draining the water flowing down along the surface 33a of the inner wall surface material 33. The draining member 60 forms a drain passage 65 inside thereof, and the water flowing down the hollow portion 33 b through the drain passage 65 is discharged from the gap 67 to the balcony space BS.
[Selection] Figure 3

Description

  The present invention relates to a wall drainage structure in a building.

  In a building such as a house, a balcony may be provided. The balcony is provided, for example, in the upper floor portion of the building above the lower-floor room (lower-floor room). The balcony is provided adjacent to the living room (upper floor living room) in the upper floor portion, and the balcony and the upper floor living room are partitioned by the outer wall of the balcony. The balcony is provided with a plurality of balcony waist walls so as to surround the balcony floor. The inner space surrounded by the balcony waist wall and the balcony outer wall is a balcony space.

  In the balcony outer wall portion, a wall surface material (that is, an outer wall surface material) is provided facing the balcony space, and a base member extending along the wall surface material is provided below the wall surface material. In this case, the gap between the wall material and the base member is filled with a water-stop seal from the balcony space side, and rainwater is prevented from entering the building through the gap. In addition, a waterproof seal (primary seal) is provided from the balcony space side to the joints between the plurality of wall surfaces arranged in the vertical and horizontal directions to prevent rainwater from entering the building through the joints.

  In the balcony waist wall part, a pair of wall materials are provided on both sides of the waist wall frame, and a base member extending along the wall material is provided below the wall material facing the balcony space among each wall material. It is done. In this case, a gap between the wall material and the base member is filled with a water-stop seal from the balcony space side to prevent rainwater from entering the wall through the gap. In addition, a water-stop seal (primary seal) is also provided in the gap between the top of the balcony waist wall and the top edge of the wall material to prevent rainwater from entering the wall through the gap. Yes.

  By the way, in a balcony outer wall part or a balcony waist wall part, the wall surface material which has the hollow part extended up and down may be used as said wall surface material provided facing a balcony space (for example, refer patent document 1). .

JP 7-279310 A

  If the waterproof seal provided at the joint between the wall materials on the outer wall of the balcony is deteriorated or corroded, rainwater may enter the joint from there. Here, when a wall surface material has said hollow part, it is possible that the rainwater which infiltrated the joint entered the hollow part along the joint. In that case, the water flows down through the hollow portion and reaches the gap between the wall surface material and the base member. And since the said clearance gap is filled with the water stop seal from the balcony space side as mentioned above, it is possible that the rainwater is not discharged to the balcony space side, but accumulates in the said clearance gap. If this happens, water may leak from the gap to the inside of the balcony outer wall (on the side opposite to the balcony space), flow into the upper floor room, and wet the upper floor room.

  Also, if the water stop seal provided between the headboard and the wall surface material deteriorates in the balcony waist wall portion, rainwater may enter from there and enter the hollow portion of the wall surface material. In that case, as in the case of the balcony outer wall, the water flows down to the gap between the wall material and the base member through the hollow portion, and then from the gap to the waist wall frame side, that is, the inside of the balcony waist wall. May flow. If this happens, water may flow from there to the lower floor room and wet the lower floor room.

  The present invention has been made in view of the above circumstances, and has as its main object to provide a wall drainage structure in a building that can prevent water that has entered the hollow portion of the wall surface material from entering the building. To do.

  In order to solve the above problems, a wall drainage structure in a building of the first invention includes a wall portion provided surrounding an outdoor open space that is open to the outdoors, and the wall portion faces the outdoor open space. A wall member provided with a hollow portion extending vertically and a base member provided below the wall member and extending along the wall member, between the lower end surface of the wall member and the upper surface of the base member Is applied to a building in which a predetermined gap is formed, has a long shape along the width direction of the wall material, and water flowing into the gap through the hollow portion of the wall material is in the thickness direction of the wall material A water-stopping member that prevents the gap from flowing into the back side of the wall surface material in the gap, and drains water that flows down along the surface of the wall surface material and is provided opposite the base member below the wall surface material. A draining member for carrying out The drained member between said base member, characterized in that it forms a drainage passage leading to the outdoor open space through the gap.

  According to the present invention, when the water that has entered the hollow portion of the wall surface material flows through the hollow portion to the gap between the lower end surface of the wall surface material and the upper surface of the base member, the water flows from the gap to the thickness of the wall surface material. In the direction, the water stop member prevents the wall material from entering the back surface side, that is, the inside of the wall portion. And the water which flowed down to the said clearance gap is discharged | emitted by the outdoor open space through the drainage passage formed between the draining member and the base member. As a result, even when rainwater or other water enters the interior of the wall due to deterioration of the primary seal provided at the joints of the wall, etc., the water flows into the wall and flows into the wall. Can be prevented from entering.

  The wall drainage structure in a building of the second invention is the wall drainage structure according to the first invention, wherein the draining member has a mounted portion disposed in a gap between the upper surface of the base member and the lower end surface of the wall surface material. The water stop member is provided with an attachment portion for detachably attaching the attached portion of the draining member.

  According to the present invention, since the draining member is provided so as to be detachable from the water stopping member, it can be easily replaced when the draining member is deteriorated or the like. In particular, the drainage member is used for draining water flowing down the surface along the surface of the wall surface material, and the back surface (inner side surface) is used for forming a drainage passage for discharging water flowing down through the hollow portion of the wall surface material. In the above configuration, the draining member is likely to become dirty or deteriorated, so that the frequency of replacement is assumed to increase. For this reason, it can be said that the advantage which makes the draining member detachable is great.

  In the wall drainage structure in the building of the third invention, in the second invention, the water stop member is provided with a plurality of the attachment portions at predetermined intervals along the longitudinal direction, The attached portion is provided corresponding to the position of the attaching portion, and the water flowing down through the hollow portion is guided to the drainage passage through the plurality of attaching portions.

  In the configuration in which the water stop member is arranged on the back surface side of the wall material and the draining member is on the surface side of the wall material in the thickness direction of the wall material, the water flowing down through the hollow portion of the wall material is formed inside the drain member. In order to be led to the drainage passage, it is necessary to pass between the water stop member and the drainage member. Here, in the configuration in which the attached portion of the draining member is detachably attached to the attaching portion of the water stopping member, the attaching portion and the attached portion are connected to each other so that the water stopping member (water stopping member side) and the draining member are mutually connected. They will be joined together. Therefore, in the present invention, a plurality of attachment portions are provided at predetermined intervals along the longitudinal direction of the water stop member, so that the water flowing down the hollow portion through the attachment portions is guided to the drainage passage. Thereby, the water which flowed down through the hollow part can be suitably discharged to the outdoor open space while making the draining member detachable from the water stop member.

  According to a fourth aspect of the present invention, there is provided the wall drainage structure according to any one of the first to third aspects, wherein the water stop member includes a base contact portion that is in contact with an upper surface of the base member, and the base contact portion. And a rising portion having a wall contact portion that is in contact with the wall surface material, and at least a part of the wall contact portion with respect to the wall surface material is more than the hollow portion. The wall surface material is in contact with the back surface side.

  According to the present invention, since the base contact portion of the water stop member is in contact with the upper surface of the base member, the water that has flowed into the gap between the wall surface material and the base member through the hollow portion of the wall surface material is applied to the base. It is prevented that it flows into the inside of a wall part through between a contact part and a base member. Further, since at least a part of the wall contact portion of the water blocking member is in contact with the wall surface material on the back surface side of the wall surface material rather than the hollow portion, the water flowing into the gap is separated from the wall contact portion. It is prevented from flowing into the wall portion through the wall material. Thereby, the penetration | invasion to the inside of the wall of the water which flowed down through the hollow part can be specifically prevented.

  According to a fifth aspect of the present invention, there is provided the wall drainage structure according to the fourth aspect, wherein the draining member includes a horizontal plate portion that is provided to enter a gap between the upper surface of the base member and the lower end surface of the wall surface material. The base abutting portion extends from the rising portion toward the outdoor open space side, and part of the base abutting portion is opposed to the horizontal plate portion in the vertical direction, and the opposed portion and the horizontal plate portion The space is part of the drainage passage.

  According to the present invention, the base contact portion extends from the rising portion to the outdoor open space side, and a part thereof faces the horizontal plate portion of the draining member. In this case, since a part of the drainage passage is formed between the facing portion of the base contact portion and the horizontal plate portion, the water flowing down through the hollow portion is received on the base contact portion of the water stop member. After that, it is guided to the drainage passage by flowing along the base contact portion. Thereby, the water which entered the hollow part can be smoothly discharged into the outdoor open space.

  The wall drainage structure in the building of the sixth invention is the wall according to the fourth or fifth invention, wherein the wall contact portion extends in the thickness direction of the wall surface material and is contacted along the lower end surface of the wall surface material. It has at least any one of a lower contact surface part and a wall back contact surface part which extends in the height direction of the wall surface material and is contacted along the back surface of the wall surface material.

  In the above configuration in which the drainage passage extending from the gap between the wall material and the base member to the outdoor open space is provided, when there is rainfall with strong wind, rainwater flows backward from the outdoor open space to the gap through the drainage passage. There is a risk. In this case, there is a concern that the rainwater that has flowed back enters the inside of the wall through the gap between the wall contact portion of the water stop member and the wall surface material. Accordingly, in the present invention, in view of this point, the wall abutting portion is contacted along the lower end surface of the wall surface material, and the wall back surface is abutted along the back surface of the wall surface material. At least one of the contact surface portions is provided. Thereby, since the wall contact portion is in contact with at least one of the lower end surface and the back surface of the wall material, water enters the inside of the wall through between the wall contact portion and the wall material. Can be suppressed.

  A wall drainage structure in a building of a seventh invention is the sixth invention, comprising a wall support member that supports the wall surface material from below, wherein the water stop member is a part of the wall contact portion, and A lower wall contact plate portion having the lower wall contact surface portion as an upper surface is fixed by being sandwiched between a lower end surface of the wall surface material and the wall support member.

  According to the present invention, the water stop member is fixed by sandwiching the lower wall contact plate portion, which is a part of the water stop member, between the lower end surface of the wall material and the wall support member. When fixing the water member, a fixing member such as a screw or a fixing bracket can be made unnecessary. Therefore, the effect of the first invention can be obtained while simplifying the configuration. In addition, since the lower wall contact plate is sandwiched between the lower end surface of the wall surface material and the wall support member by the weight of the wall surface material, the degree of adhesion between the lower wall contact surface portion and the lower end surface of the wall surface material is increased. be able to. Thereby, the effect which suppresses the penetration | invasion of the water to the inside of a wall part through between the lower end surface of a wall surface material and a wall lower contact surface part can be heightened.

  The wall drainage structure in the building of the eighth invention is characterized in that, in the sixth or seventh invention, the wall contact part has the wall back contact surface part.

  The length in the wall height direction on the back surface of the wall material is sufficiently larger than the length in the wall thickness direction on the lower end surface of the wall material. Therefore, in the present invention, the wall abutting surface portion that abuts along the back surface of the wall surface material is provided on the wall abutting portion of the water stop member. In this case, a wide abutting surface where the wall abutting portion and the wall surface material abut each other can be secured, so that water flowing into the wall portion between the wall abutting portion and the wall surface material can be obtained. Can be suitably suppressed.

  Moreover, you may provide both a wall lower contact surface part and a wall back contact surface part continuously in a wall contact part. In this case, since the lower wall contact surface portion and the rear wall contact surface portion are arranged at right angles along the corner portion of the wall surface material, water is temporarily passed between the lower wall contact surface portion and the lower end surface of the wall surface material. Even if it flows toward the inside of the wall portion, the flow can be blocked by the wall back contact surface portion. Therefore, it becomes possible to further suppress the intrusion of water into the inside of the wall portion.

  A wall drainage structure in a building of a ninth invention is the wall drainage structure according to any one of the first to eighth inventions, wherein the drainage passage is provided with a closing member that closes a part of the drainage passage. In the method, water is discharged through a portion where the blocking member is not provided.

  According to the present invention, since a part of the drainage passage is blocked by the closing member, it is possible to suppress the backflow of water from the outdoor open space side through the drainage passage when there is rainfall with strong wind. it can. Thereby, it can suppress that the water which flowed back flows in into the inside of a wall part from between a water stop member and a wall surface material, or between a water stop member and a base member. Moreover, since the water flowing down through the hollow portion of the wall surface material is discharged through the portion where the blocking member is not provided in the drainage passage while the blocking member is provided in the drainage passage in this way, water intrusion into the building is prevented. Can be prevented.

The longitudinal cross-sectional view which shows the outline of a building. The longitudinal cross-sectional view which shows the structure of a balcony waist wall part and its periphery. The longitudinal cross-sectional view which expands and shows a wall drainage structure. The longitudinal cross-sectional view which shows the modification of a water stop character. The longitudinal cross-sectional view which shows the wall drainage structure in an outer wall part.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an outline of a building.

  As shown in FIG. 1, the building 10 includes a building main body 11 and a roof 12 formed above the building main body 11. The building main body 11 is a two-story building having a first-floor portion 13 and a second-floor portion 14. A first living room 15 or the like is formed on the first floor portion 13 of the building 10, and a second living room 16 or the like is formed on the second floor portion 14.

  A balcony 20 is provided on the second floor portion 14 of the building 10. The balcony 20 is provided adjacent to the second living room 16 and is partitioned from the second living room 16 by the outer wall portion 17. The outer wall portion 17 is provided with a window portion (for example, a sweeping window) 18 for entering and exiting the balcony 20, and the window portion 18 is provided with a glass door 19 for opening and closing the window portion 18.

  The balcony 20 includes a balcony floor portion 21 and a balcony waist wall portion 22 erected so as to surround the balcony floor portion 21 together with the outer wall portion 17. In this case, the space surrounded by the balcony floor 21, the balcony waist wall 22, and the outer wall 17 is the balcony space BS. Here, the balcony space BS corresponds to an outdoor open space, and the balcony waist wall portion 22 and the outer wall portion 17 correspond to a wall portion provided surrounding the outdoor open space.

  Next, the structure of the balcony waist wall part 22 and its periphery is demonstrated based on FIG. In addition, FIG. 2 is a longitudinal cross-sectional view which shows the structure of the balcony waist wall part 22 and its periphery. Moreover, in FIG. 2, the balcony waist wall part 22 provided facing the outer wall part 17 (window part 18) is illustrated.

  As shown in FIG. 2, a balcony floor beam 25 that supports the balcony floor 21 (and thus the balcony 20) from below is provided below the balcony floor 21. The balcony floor beam is made of H-shaped steel and is provided so as to extend along the balcony waist wall portion 22. A floor base material 26 made of an ALC floor or the like is provided on the upper surface of the balcony floor beam 25, and a heat insulating material 27 made of a foamed polystyrene resin or the like is laid on the floor base material 26. On the heat insulating material 27, a waterproof plate 28 made of a steel plate provided with a water-resistant film (for example, a vinyl chloride film) is laid.

  On the balcony floor beam 25, a balcony waist wall portion 22 is provided in addition to the balcony floor portion 21. The balcony waist wall portion 22 includes a waist wall frame 31 as a wall base material, an outer wall surface material 32 provided outside the waist wall frame 31 (opposite the balcony space BS), and a balcony space of the waist wall frame 31. And an inner wall surface material 33 provided on the BS side. In this case, an outer wall surface is formed by the surface 32 a of the outer wall surface material 32, and a wall surface on the balcony space BS side is formed by the surface 33 a of the inner wall surface material 33.

  The waist wall frame 31 includes a plurality of waist wall columns 35 erected at predetermined intervals in the width direction of the balcony waist wall portion 22 and a plurality of horizontal frames provided across the waist wall columns 35. And materials 36-39. The waist wall frame 31 is configured by connecting the waist wall column 35 and the lateral frame member 36 to each other.

  The waist wall support 35 is made of a lightweight steel frame having a U-shaped cross section. A column base plate 42 is fixed to the lower end portion of the waist wall column 35, and the column base plate 42 is fixed to the upper surface of the balcony floor beam 25 using bolts 47 and nuts 48. Thereby, the waist wall support 35 and the waist wall frame 31 are fixed to the balcony floor beam 25.

  As the horizontal frame members 36 to 39, a pair of outer horizontal frame members 36 and 37 provided corresponding to the upper and lower ends of the outer wall surface member 32 outside the waist wall column 35, and the balcony space BS of the waist wall column 35. On the side, a pair of inner side frame members 38 and 39 are provided corresponding to the upper and lower ends of the inner wall surface member 33. Each of these frame members 36 to 39 is formed of a sheet metal member having an L-shaped cross section.

  The outer lateral frame members 36, 37 are fixed plate portions 36a, 37a fixed to the outer surface of the waist wall column 35 (the surface opposite to the balcony space BS side), and the opposite sides of the fixed plate portions 36a, 37a. The horizontal plate portions 36b and 37b that extend from the end portion to the opposite side of the balcony space BS and are opposed to each other with the outer wall surface material 32 interposed therebetween are provided. Inner side frame members 38 and 39 are fixed to a balcony space from fixed plate portions 38a and 39a fixed to the surface of the waist wall column 35 on the balcony space BS side, and ends opposite to each other in the fixed plate portions 38a and 39a. Horizontal plate portions 38b and 39b extending to the BS side and facing up and down across the inner wall surface material 33 are provided.

  The outer wall surface material 32 and the inner wall surface material 33 are each configured by ceramic siding. Each of these wall surface materials 32 and 33 has a plurality of hollow portions 32b and 33b extending in the entire vertical direction. The plurality of hollow portions 32 b and 33 b are arranged at predetermined intervals along the width direction of the wall surface materials 32 and 33.

  The outer wall surface member 32 is fixed to the waist wall frame 31 via a pair of upper and lower fixing fittings 43 and 44 with the lower end surface thereof being placed on the horizontal plate portion 37 b of the outer lateral frame member 37. Each of the fixing brackets 43 and 44 is formed by bending a steel plate. Among the fixing brackets 43, 44, the upper fixing bracket 43 is provided across the back surface of the outer wall surface material 32 and the back surface of the fixing plate portion 36a of the outer lateral frame member 36, and bolts or the like are respectively provided on the respective back surfaces. It is fixed with. Further, the lower fixing bracket 44 is provided across the back surface of the outer wall surface material 32 and the back surface of the fixing plate portion 37a of the outer lateral frame member 37, and is fixed to each of these back surfaces with bolts or the like. . As a result, the outer wall surface material 32 is fixed to the waist wall frame 31 via the fixing brackets 43 and 44.

  An outer wall surface material 57 of the first floor portion 13 is provided below the outer wall surface material 32, and a joint (lateral joint) between the outer wall surface material 32 and the outer wall surface material 57 is formed by an indefinite shape seal. A sealing material 58 is provided.

  The inner wall surface member 33 is fixed to the waist wall frame 31 via a pair of upper and lower fixing brackets 45 and 46 in a state where the lower end surface thereof is placed on the horizontal plate portion 39 b of the inner lateral frame member 39. Each of the fixtures 45 and 46 has the same configuration as the fixtures 43 and 44 described above. The upper fixing bracket 45 is provided across the rear surface of the inner wall surface material 33 and the rear surface of the fixing plate portion 38a of the inner lateral frame member 38, and is fixed to each of the rear surfaces with bolts or the like. The lower fixing metal 46 is provided across the back surface of the inner wall surface material 33 and the back surface of the fixing plate portion 39a of the inner horizontal frame material 39, and is fixed to each of the back surfaces with bolts or the like. . Thereby, the inner wall surface material 33 is fixed to the waist wall frame 31 via the respective fixing brackets 45 and 46.

  Although not shown in the drawings, the outer wall surface material 32 and the inner wall surface material 33 are provided side by side and plurally, and joints (vertical joints) between adjacent outer wall surface materials 32 and adjacent inner walls are provided. The joints (vertical joints) between the wall materials 33 are each filled with a sealing material made of an irregular seal. This prevents rainwater from entering the inside of the balcony waist wall portion 22 through the joint.

  In a gap 49 between the upper end surface of the outer wall surface material 32 and the horizontal plate portion 36b of the outer horizontal frame member 36, a sealing material 51 made of an irregular seal is provided. In the gap 50 between the 38 horizontal plate portions 38b, a sealing member 52 made of an irregular seal is provided. The sealing material 51 is disposed on the outdoor side with respect to the hollow portion 32b in the gap 49, and the sealing material 52 is disposed on the balcony space BS side with respect to the hollow portion 33b in the gap 50. This prevents rainwater from entering the inside of the balcony waist wall portion 22 through the gaps 49 and 50.

  A base frame 40 is provided below the inner wall surface material 33. The base frame 40 is made of channel steel having a U-shaped cross section, and is formed to extend along the width direction of the inner wall surface material 33. The base frame 40 includes a web portion 40a extending in the vertical direction, and a pair of flange portions 40b and 40c extending from the upper and lower end portions of the web portion 40a to the waist wall frame 31 side. The ends of the flange portions 40b and 40c of the base frame 40 are fixed to the waist wall columns 35 of the waist wall frame 31 by welding. Further, the upper surface of the base frame 40 (the upper surface of the upper flange portion 40 b) faces the lower end surface of the inner wall surface material 33 in the vertical direction with a predetermined gap 67 therebetween. Here, the base frame 40 corresponds to a base member, and the base frame 40 constitutes a part of the balcony waist wall portion 22.

  A part of the waterproof plate 28 is superimposed on the outer side surface (the surface on the balcony space BS side) of the web portion 40 a of the base frame 40. The waterproof board 28 is laid on the heat insulating material 27 and forms a floor surface of the balcony space BS. The waterproof board 28 rises upward from the end portion of the floor board portion 28a on the balcony waist wall portion 22 side, and the outer surface of the web portion 40a. And a rising portion 28b superimposed on each other. In this case, water such as rain water is prevented from flowing into the first living room 15 through the corner between the balcony floor 21 and the balcony waist wall 22. The rising portion 28b extends to the upper end portion of the web portion 40a.

  In this way, from the viewpoint that the base frame 40 is used as the base of the rising portion 28b of the waterproof plate 28, the base frame 40 can also be referred to as a waterproof base material.

  A cap holder 53 is attached to the upper end of the waist wall frame 31. The headboard holder 53 is provided across the horizontal plate portions 36b and 38b of the horizontal frame members 36 and 38, and is fixed to the horizontal plate portions 36b and 38b by bolts 55. A headboard 54 is attached to the headboard holder 53. The headboard 54 is provided so as to cover the waist wall frame 31 and the wall surface materials 32 and 33 from above. In addition, although illustration is abbreviate | omitted, a waterproof sheet is inserted | pinched between the headboard holder 53 and the horizontal board parts 36b and 38b of each horizontal frame material 36 and 38, and rainwater passes between these both members 53 and 36 (38). Is prevented from entering the inside of the balcony waist wall 22.

  By the way, in the above-described configuration, when the sealing material 52 provided in the gap 50 between the upper end portion of the inner wall surface material 33 and the inner side frame material 38 (38b) deteriorates and rainwater enters the gap 50 from there. The water may enter the hollow portion 33 b of the inner wall surface material 33 through the gap 50. In that case, the water may flow down to the gap 67 between the lower end surface of the inner wall surface material 33 and the upper surface of the base frame 40 through the hollow portion 33b and then flow toward the waist wall frame 31 side. Then, there is a concern that the water may flow down from the waist wall frame 31 toward the first living room 15 and the first living room 15 gets wet. Therefore, in this embodiment, in view of this point, the wall drainage structure for discharging the water that has entered the hollow portion 33b to the balcony space BS is constructed using the draining member 60 or the like. Hereinafter, such a wall drainage structure will be described with reference to FIG. FIG. 3 is an enlarged longitudinal sectional view showing the wall drainage structure.

  As shown in FIG. 3, a draining member 60 is provided below the inner wall surface material 33. The draining member 60 has a long shape extending in the width direction of the balcony waist wall portion 22 (inner wall surface material 33), and is made of, for example, an extruded product made of aluminum. The draining member 60 is provided below the inner wall surface material 33 and straddling the plurality of inner wall surface materials 33. Moreover, the cross-sectional shape of the draining member 60 is the same in the whole longitudinal direction.

  The draining member 60 has a draining plate portion 61 extending in the vertical direction and a lateral plate portion 62 extending from the upper end portion of the draining plate portion 61 to the waist wall frame 31 side. In the draining member 60, the draining plate portion 61 faces the web portion 40 a of the base frame 40, and the horizontal plate portion 62 faces the upper flange portion 40 b of the base frame 40.

  The draining plate portion 61 has a draining surface 61a facing the balcony space BS. The draining surface 61 a is located on substantially the same plane as the surface 33 a of the inner wall surface material 33. Rainwater flowing down along the surface 33a of the inner wall surface material 33 is guided to the balcony space BS side from the base frame 40 by the drainage surface 61a.

  A drainage passage 65 is formed between the draining member 60 and the base frame 40. The drainage passage 65 communicates with the balcony space BS from the gap 67 between the inner wall surface material 33 and the base frame 40, and extends in an L shape along the inner side surface of the draining member 60. There are 65 outlets 65a between the lower end portion of the draining plate portion 61 and the web portion 40a of the base frame 40 (specifically, the rising portion 28b of the waterproof plate 28). 65 is opened downward to the balcony space BS through the discharge port 65a.

  On the back side of the water draining member 60, a water stop function 70 as a water stop member is provided. The water-stopping member 70 has a long shape extending in the width direction of the inner wall surface material 33, and extends across the plurality of inner wall surface materials 33 provided side by side. The water-stopping member 70 is formed by bending a steel plate. Specifically, a base abutting plate portion 70a that abuts on the upper surface of the base frame 40 (specifically, the upper flange portion 40b), and a base abutment. A vertical plate portion 70b extending upward from the end of the contact plate portion 70a on the waist wall frame 31 side (opposite to the balcony space BS), and an inner wall surface extending from the upper end portion of the vertical plate portion 70b to the waist wall frame 31 side. The lower wall contact plate portion 70c that is in contact with the lower end surface of the material 33, and extends upward from the end portion on the waist wall frame 31 side of the lower wall contact plate portion 70c and is in contact with the back surface of the inner wall surface material 33. And a wall back contact plate portion 70d.

  The base contact plate portion 70a is in contact with the upper end portion of the rising portion 28b of the waterproof plate 28 at the end on the balcony space BS side. Thereby, the base contact plate portion 70a and the rising portion 28b are continuous, and consequently, the water-stopping member 70 and the waterproof plate 28 are continuous. Further, a part of the base abutting plate part 70 a is vertically opposed to the horizontal plate part 62 of the draining member 60, and a part of the drainage passage 65 is formed between the horizontal plate part 62 and the horizontal plate part 62.

  The vertical plate portion 70 b extends across the entire height direction of the gap 67 in the gap 67 between the inner wall surface material 33 and the base frame 40. The vertical plate portion 70b is located at an intermediate position of the hollow portion 33b in the thickness direction of the inner wall surface material 33, and more specifically, is located substantially at the center of the hollow portion 33b. The vertical plate portion 70 b is provided closer to the waist wall frame 31 than the horizontal plate portion 62 of the draining member 60, and is disposed in a state of being separated from the horizontal plate portion 62.

  The lower wall contact plate portion 70 c is provided in a state of being sandwiched between the lower end surface of the inner wall surface material 33 and the horizontal plate portion 39 b of the inner side frame material 39. In this case, the lower wall contact plate portion 70c is sandwiched between the lower end surface of the inner wall surface material 33 and the horizontal plate portion 39b by the weight of the inner wall surface material 33, and the lower wall contact plate portion is sandwiched by the sandwiching. 70c and by extension the water-stopping member 70 is fixed. Here, the inner lateral frame member 39 corresponds to a wall support member.

  Further, the end portion on the balcony space BS side (in other words, the connecting portion with the vertical plate portion 70b) of the lower wall contact plate portion 70c is in the thickness direction of the inner wall surface material 33 (hereinafter referred to as the wall thickness direction in some cases). The middle part of the hollow part 33b is specifically located in the center part. Therefore, a part of the hollow portion 33b is closed from below by the under-wall contact plate portion 70c. In other words, the lower wall contact plate portion 70c (and thus the wall contact portion) is in contact with the inner wall surface material 33 in a state where at least a part of the hollow portion 33b is opened downward. Even if a part of the hollow portion 33b is blocked in this way, the amount of rainwater that enters the gap 50 and enters the hollow portion 33b from the sealing material 52 deteriorates or the like is not so much. There is no particular problem in discharging the water that has entered the hollow portion 33b.

  Here, by arranging the vertical plate portion 70b on the waist wall frame 31 side with respect to the hollow portion 33b in the wall thickness direction, the end portion on the balcony space BS side in the under-wall contact plate portion 70c is located on the waist wall side with respect to the hollow portion 33b. It is also conceivable to position it on the wall frame 31 side. However, in this case, the length in the wall thickness direction of the lower wall contact plate portion 70c is shortened, and it is difficult to secure a sufficient amount of pinching between the inner wall surface member 33 and the inner side frame member 39. It becomes. In this regard, according to the above configuration in which the lower wall contact plate portion 70c is formed so as to partially overlap the hollow portion 33b in the wall thickness direction, the overlapping wall lower contact plate portion 70c in the wall thickness direction is overlapped. Since the length can be increased, a sufficient clamping margin can be secured, and the under-wall contact plate portion 70c can be fixed in a stable state.

  The wall back contact plate portion 70 d is provided in a state of being sandwiched between the fixed plate portion 39 a of the inner side lateral frame member 39 and the back surface of the inner wall surface member 33. In this case, the wall back contact plate portion 70 d is in contact with the back surface of the inner wall surface material 33 while being in close contact. The wall back contact plate portion 70d is longer in the vertical direction than the wall thickness direction length of the lower wall contact plate portion 70c, and longer than the vertical length of the fixed plate portion 39a. .

  In the water-stopping member 70 described above, the base abutting plate portion 70a corresponds to the base abutting portion, and the surface abutted against the lower end surface of the inner wall surface member 33 (that is, the upper surface) ) Corresponds to the lower wall contact surface portion, and the surface of the wall back contact plate portion 70d that is in contact with the back surface of the inner wall surface material 33 corresponds to the wall back contact surface portion. Moreover, the wall contact part is comprised by the wall lower contact board part 70c and the wall back contact board part 70d. Further, the vertical plate portion 70b, the lower wall contact plate portion 70c, and the wall back contact plate portion 70d constitute a rising portion.

  As shown to Fig.3 (a), the draining member 60 is attached to the water stop accessory 70 so that attachment or detachment is possible. A piece member 75 for removably attaching the draining member 60 is fixed to the vertical plate portion 70b of the water-stopper 70. Here, the piece member 75 corresponds to the mounting portion. The piece member 75 is formed in a short shape as compared with the draining member 60 and the water-stopping member 70. For example, the lateral width (the length in the longitudinal direction of the water-stopping member 70) is 50 mm. The piece members 75 are provided at a plurality of locations at predetermined intervals along the longitudinal direction of the water-stopping member 70. 3, (a) is a longitudinal sectional view at a portion where the piece member 75 is disposed, and (b) is a longitudinal sectional view at a portion where the piece member 75 is not disposed.

  The piece member 75 has a fixed plate portion 76 fixed to the surface of the vertical plate portion 70b on the balcony space BS side by a rivet 79, and a clamping portion 77 provided on the fixed plate portion 76. The sandwiching portion 77 has a pair of upper and lower sandwiching plate portions 77a and 77b extending from the fixed plate portion 76 toward the balcony space BS. The rivet 79 is waterproofed so that water does not enter from the periphery of the rivet 79 toward the waist wall frame 31 rather than the vertical plate portion 70b.

  On the other hand, the draining member 60 is provided with a mounted portion 81 that is detachably attached to the piece member 75. The attached portion 81 is provided in the vicinity of the end portion on the waist wall frame 31 side in the horizontal plate portion 62, and is disposed in a gap 67 between the inner wall surface material 33 and the base frame 40. The attached portion 81 is provided on the upper surface side of the horizontal plate portion 62 and is disposed so as to block between the upper surface of the horizontal plate portion 62 and the lower end surface of the inner wall surface material 33.

  The attached portion 81 has a sandwiched portion 82 extending toward the waist wall frame 31 side. A part of the sandwiched portion 82 extends to the waist wall frame 31 side with respect to the lateral plate portion 62 and enters between the sandwiching plate portions 77a and 77b of the water-stopping member 70 to enter each sandwiching plate portion 77a, 77b. More specifically, the sandwiched portion 82 has an upright plate portion 82a that stands upward at the end thereof, and the raised plate portion 82a is fitted between the sandwiched plate portions 77a and 77b. Has been. The attached portion 81 and thus the draining member 60 are detachably attached to the piece member 75 by such clamping (fitting). Thereby, the installation work of the draining member 60 can be easily performed at the time of construction.

  In a state where the draining member 60 is attached to the piece member 75, the vertical plate portion 70b of the water stop member 70 and the draining member 60 are arranged in a state of being separated from each other in the wall thickness direction. In this case, as shown in FIG. 3 (b), in a portion where the piece member 75 is not arranged in the longitudinal direction of the water-stopping member 70, a detailed description will be given between the vertical plate portion 70 b and the draining member 60 that are separated from each other. A predetermined gap 88 is formed between the vertical plate portion 70b and the attached portion 81 (more specifically, the sandwiched portion 82). That is, the gap 88 is formed between the piece members 75 when viewed in the longitudinal direction of the water-stopping member 70. In this case, water flowing down through the hollow portion 33 b of the inner wall surface material 33 is guided to 65 through the gap 88.

  A seal member 83 that closes the gap is provided in the gap between the horizontal plate portion 62 of the draining member 60 and the lower end surface of the inner wall surface member 33. The seal member 83 is disposed closer to the balcony space BS than the mounted portion 81 in the gap, and is disposed in a state of being applied to the contact portion 84 of the mounted portion 81 from the balcony space BS side. The seal member 83 is formed in an elongated shape along the longitudinal direction of the draining member 60 and is fixed to the upper surface of the horizontal plate portion 62 by bonding.

  The drainage passage 65 is provided with closing members 85 and 86 for closing a part of the passage 65. The blocking members 85 and 86 are directions in which water flows in the drainage passage 65, that is, a direction in which the drainage passage 65 extends from the gap 67 between the inner wall surface material 33 and the base frame 40 to the balcony space BS (passage extending direction). Are provided at a plurality of locations (two locations in this embodiment) at predetermined intervals. Each closing member 85, 86 is made of a rubber material such as EPDM. Each of the closing members 85 and 86 is formed in a long shape along the longitudinal direction of the draining member 60, and the cross section thereof has a rectangular shape. In addition, a plurality of the blocking members 85 and 86 are arranged at predetermined intervals along the longitudinal direction. In the drainage passage 65, water flows between the adjacent closing members 85 and between the adjacent closing members 86.

  The blocking member 85 is disposed in the drainage passage 65 between the horizontal plate portion 62 of the draining member 60 and the base contact plate portion 70a of the water stop member 70, and the horizontal plate portion 62 and the base contact plate portion 70a. It is provided across. The blocking member 86 is disposed between the draining plate portion 61 of the draining member 60 and the rising portion 28b of the waterproof plate 28 in the drainage passage 65, and is provided across the draining plate portion 61 and the rising portion 28b. It has been. In this case, the draining member 60 is installed with the drainage passage 65 being separated from the base frame 40, and the draining member 60 can be installed in a stable state.

  Each blocking member 85, 86 is fixed to the back surface of the draining member 60 by adhesion. Therefore, the closing members 85 and 86 can be disposed in the drainage passage 65 simply by attaching the draining member 60 to the piece member 75 at the time of construction. Further, since the closing member 85 is provided on the base frame 40, specifically, on the upper surface of the base contact plate portion 70 a of the water-stopping member 70, when the draining member 60 is attached to and detached from the piece member 75, the closing member 85. Can be attached and detached while sliding along the base frame 40. Therefore, the attachment / detachment work of the draining member 60 can be facilitated.

  In the drainage passage 65, the blocking members 85 and 86 may be provided at three or more locations along the passage extension direction, or may be provided only at one location. Further, the closing members 85 and 86 are not necessarily formed of a rubber material having flexibility, and may be formed of a hard material such as wood or a metal material. Further, the closing members 85 and 86 may not be provided in the drainage passage 65.

  Next, the operation of the wall drainage structure will be described with reference to FIG. In addition, in FIG.3 (b), the flow until the water which entered the hollow part 33b of the inner wall surface material 33 is discharged | emitted through a wall drainage structure is shown by the dotted line arrow.

  In the balcony waist wall portion 22, the sealing material 52 provided in the gap 50 between the upper end surface of the inner wall surface material 33 and the inner side frame member 38 (horizontal plate portion 38 b) deteriorates, and rainwater enters the gap 50 therefrom. In the case of intrusion, it is considered that the rainwater enters the hollow portion 33 b of the inner wall surface material 33. In that case, the water flows down to the gap 67 between the inner wall surface material 33 and the base frame 40 through the hollow portion 33b as shown in FIG. The water that has reached the gap 67 flows down onto the base abutting plate portion 70a of the water stop member 70 through the gap 88 between the vertical plate portion 70b of the water stop member 70 and the mounted portion 81 of the draining member 60. It is received on the contact plate portion 70a and then flows along the base contact plate portion 70a toward the balcony space BS, that is, toward the drainage passage 65. Specifically, the water received on the base contact plate portion 70a is prevented from flowing into the waist wall frame 31 side, that is, inside the balcony waist wall portion 22 by the vertical plate portion 70b and the lower wall contact plate portion 70c. As a result, water flows toward the drainage passage 65. Then, the water flows through the drainage passage 65 and is discharged from the discharge port 65a to the balcony space BS. In this way, in the wall drainage structure described above, the water that has entered the hollow portion 33b of the inner wall surface material 33 can be discharged into the balcony space BS without entering the inside of the balcony waist wall portion 22.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  Since the waterproofing member 70 is provided on the balcony waist wall portion 22, the water that has flowed into the gap 67 between the lower end surface of the inner wall surface material 33 and the upper surface of the base frame 40 through the hollow portion 33 b of the inner wall surface material 33 is formed on the inner wall surface. Intrusion into the waist wall frame 31 side (in other words, the back surface side of the inner wall surface material 33), that is, the inside of the balcony waist wall portion 22 in the thickness direction of the material 33 can be prevented. In addition, a draining member 60 is provided below the inner wall member 33 so as to face the base frame 40, and a drainage passage 65 that leads from the gap 67 to the balcony space BS is formed between the draining member 60 and the base frame 40. Therefore, the water flowing down to the gap 67 can be discharged to the balcony space BS through the drainage passage 65. Thereby, even when the sealing material 52 provided in the gap 50 between the upper end surface of the inner wall surface material 33 and the inner side frame material 38 deteriorates and rainwater enters the gap 50 and enters the hollow portion 33b from there, The rainwater can be prevented from entering the building 10, for example, the first living room 15.

  A base abutment plate portion 70a that abuts against the upper surface of the base frame 40; a vertical plate portion 70b that rises upward from the end of the base abutment plate portion 70a on the waist wall frame 31 side; The lower wall contact plate portion 70c that extends from the upper end portion of the vertical plate portion 70b toward the waist wall frame 31 and is in contact with the lower end surface of the inner wall surface material 33 is provided. Then, a part of the lower wall contact plate portion 70c was brought into contact with the lower end surface of the inner wall surface material 33 closer to the waist wall frame 31 than the hollow portion 33b. In this case, it is possible to prevent water flowing into the gap 67 through the hollow portion 33b from entering the inside of the balcony waist wall portion 22 between the base contact plate portion 70a and the upper surface of the base frame 40. Moreover, it can prevent entering the inside of the balcony waist wall part 22 through between the wall lower contact board part 70c and the lower end surface of the inner wall surface material 33. FIG. Thereby, it is possible to specifically prevent water flowing down through the hollow portion 33 b from entering the inside of the balcony waist wall portion 22.

  The base contact plate portion 70a extends in the wall thickness direction and contacts the upper surface of the base frame 40, and the lower wall contact plate portion 70c extends in the wall thickness direction and the lower end surface of the inner wall surface member 33. Therefore, the base contact plate portion 70a and the upper surface of the base frame 40 are in contact with each other, and the lower wall contact plate portion 70c and the lower end surface of the inner wall surface material 33 are in contact with each other. It is in contact with. As a result, even if rain with strong wind occurs, even if rainwater flows backward through the drainage passage 65, the rainwater that has flowed back is between the base contact plate portion 70a and the base frame 40, or under the wall contact plate portion. It is possible to suppress intrusion into the inside of the balcony waist wall portion 22 through between 70c and the inner wall surface material 33.

  The lower wall contact plate portion 70 c was fixed by being sandwiched between the inner side frame material 39 that supports the inner wall surface material 33 from below and the lower end surface of the inner wall surface material 33. In this case, a fixing member such as a screw or a fixing metal fitting can be eliminated when fixing the water-stopping member 70, so that the configuration can be simplified. Further, since the lower wall contact plate portion 70c is sandwiched between the lower end surface of the inner wall surface material 33 and the inner lateral frame material 39 by its own weight, the lower wall contact plate portion 70c (the upper surface thereof). ) And the lower end surface of the inner wall surface material 33 can be increased. Thereby, the effect which suppresses the penetration | invasion of the water to the balcony waist wall part 22 inside between the lower end surface of the inner wall surface material 33 and the wall lower contact board part 70c can be heightened.

  A wall back abutting plate portion 70 d that extends in the height direction of the inner wall surface material 33 and is abutted along the back surface of the wall surface material 33 is provided on the water stop member 70. Since the length in the wall height direction on the back surface of the inner wall surface material 33 is sufficiently larger than the length in the wall thickness direction on the lower end surface of the inner wall surface material 33, in this case, the inner wall surface material 33 and the water-stopper 70 are surfaces. It is possible to ensure a wide contact surface that contacts each other. Therefore, it is possible to suitably suppress the intrusion of water into the balcony waist wall portion 22 through the space between the water-stopping member 70 and the inner wall surface material 33.

  Since the lower wall contact plate portion 70c and the back wall contact plate portion 70d are provided continuously, the water temporarily passes between the lower wall contact plate portion 70c and the lower end surface of the inner wall surface material 33 on the waist wall frame 31 side. Even if it flows into the wall, the flow can be blocked by the wall back contact plate portion 70d. Thereby, it becomes possible to further suppress the intrusion of water into the balcony waist wall portion 22.

  Further, since the water-stopping member 70 having the wall back contact plate portion 70d is provided so as to straddle the plurality of inner wall surfaces 33 provided side by side, a joint (vertical) between the adjacent inner wall surfaces 33 is provided. When the sealing material provided at the joints deteriorates and rainwater enters the joints, the water flowing down along the joints is received by the water stop 70 and the received water is the waist wall frame 31. It is possible to prevent the wall back contact plate portion 70d from flowing into the side. Therefore, as a result, the water can be discharged to the balcony space BS through the drainage passage 65. Therefore, in this case, not only water that has entered the hollow portion 33b but also water that has entered the joints of the inner wall surface material 33 can be prevented from entering the building 10.

  A draining member 60 extends in the vertical direction, and a horizontal plate part extending from the draining plate part 61 toward the gap 67 between the inner wall surface material 33 and the base frame 40 and partially entering the gap 67. 62. Then, the base abutting plate portion 70a of the water-stopping member 70 is formed so as to extend from the vertical plate portion 70b toward the balcony space BS, and a part thereof is opposed to the horizontal plate portion 62 in the vertical direction. A portion of the drainage passage 65 is defined between the facing portion and the horizontal plate portion 62. In this case, the water flowing down through the hollow portion 33b of the inner wall surface material 33 flows along the outer surface (the surface on the balcony space BS side) of the vertical plate portion 70b of the water-stopping member 70 and the upper surface of the base contact plate portion 70a. Thus, the water is automatically led to the drainage passage 65. Thereby, the water which flowed down through the hollow part 33b can be discharged | emitted smoothly to the balcony space BS.

  While the attached portion 81 is provided on the horizontal plate portion 62 of the draining member 60, the water stop member 70 is provided with a piece member 75 for detachably attaching the attached portion 81. Thereby, when the draining member 60 is deteriorated, it can be easily replaced. In particular, in the configuration in which the surface of the drainage member 60 is used for draining water flowing down along the surface 33a of the inner wall surface material 33 and the back surface is used for forming the drainage passage 65, the drainage member 60 becomes dirty or deteriorates. It is assumed that the replacement frequency of the draining member 60 is increased. For this reason, it can be said that the advantage which makes the water draining member 60 removable is large.

  A plurality of piece members 75 are provided at predetermined intervals in the longitudinal direction of the water-stopping member 70, and attached portions 81 of the draining member 60 are detachably attached to the piece members 75. And the water which flowed down through the hollow part 33b was led to the drainage passage 65 through between the piece members 75. In the thickness direction of the inner wall surface material 33, the water stop member 70 is on the waist wall frame 31 side (the back surface side of the inner wall surface material 33), and the draining member 60 is on the balcony space BS side (the front surface side of the inner wall surface material 33). In the arrangement, the water flowing down through the hollow portion 33 b of the inner wall surface material 33 passes between the water stop member 70 and the drainage member 60 in order to be guided to the drainage passage 65 formed inside the drainage member 60. There is a need. Here, in the configuration in which the attached portion 81 of the draining member 60 is detachably attached to the piece member 75 provided in the water-stopping member 70, the piece member 75 and the attached portion 81 are eventually connected to the water-stopping member 70 side. And the draining member 60 are joined to each other. In this regard, since the plurality of piece members 75 are arranged at intervals, the water flowing down the hollow portion 33b is guided to the drainage passage 65 between the piece members 75. While being detachable from 70, water that has entered the hollow portion 33b can be suitably discharged to the balcony space BS.

  The drainage passage 65 is provided with closing members 85 and 86 for closing a part of the passage 65. Thereby, it is possible to prevent water from flowing backward through the drainage passage 65 when there is rainfall accompanied by strong wind. Therefore, it is possible to suppress the backflowed water from entering the inside of the balcony waist wall portion 22 between the water stop function 70 and the inner wall surface material 33 or between the water stop function 70 and the base frame 40. it can. In addition, since the water is discharged through the drain passage 65 where the blocking members 85 and 86 are not provided, the water that has entered the hollow portion 33b enters the building 10 while the blocking member 85.86 is provided. Can be prevented.

  Since the closing members 85 and 86 are provided on the back surface of the draining member 60 and the closing members 85 and 86 are disposed in contact with the base frame 40 side, the draining member 60 is installed with the drainage passage 65 separated from the base frame 40. In this configuration, the draining member 60 can be installed in a stable state. Accordingly, it is possible to suppress the disadvantage that the drainage passage 65 is closed or narrowed due to, for example, the draining member 60 being inclined during a strong wind. Further, although it is conceivable that the draining member 60 flutters in a strong wind, the flapping of the draining member 60 can be suppressed because the closing members 85 and 86 are made of a rubber material, that is, a buffer member.

  The draining member 60 is provided with a horizontal plate portion 62 that enters the gap 67 between the inner wall surface material 33 and the base frame 40, and the gap between the horizontal plate portion 62 and the lower end surface of the inner wall surface material 33 is sealed with a seal member 83. Occlusion. Thereby, it is possible to prevent rainwater from directly entering the gap 67 from the gap between the horizontal plate portion 62 and the lower end surface of the inner wall surface material 33 when there is rainfall with strong wind. That is, in this case, since rainwater enters the gap 67 only through the drainage passage 65, the rainwater that enters along with the rainwater entering the gap 67 It is possible to suppress the penetration into the balcony waist wall portion 22 through the space. In addition, when rainwater enters the gap 67 through the drainage passage 65, the momentum of rainwater can be reduced compared to the case where it enters the gap 67 directly. Can be suppressed.

  By constructing the wall drainage structure using the draining member 60, it is possible to prevent the intrusion of water into the building 10 while improving the design of the lower portion of the balcony waist wall portion 22.

  A wall drainage structure was constructed on the inner wall surface material 33 provided facing the balcony space BS above the first living room 15 (and consequently the indoor space of the first floor portion 13). When the water flowing down to the gap 67 between the base frame 40 and the inner wall surface material 33 through the hollow portion 33b of the inner wall surface material 33 flows into the waist wall frame 31 side from the gap 67, the water is directed downward. It is assumed that it easily flows down toward the first living room 15. That is, in such a case, there is a high possibility of causing water leakage in the first living room 15. In view of this point, it is significant to construct a wall drainage structure for the inner wall surface material 33.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) The structure of the water-stopper 70 is not necessarily limited to that of the above embodiment. Therefore, a modified example of the water-stopper 70 is shown in FIGS. 4A is provided with a swash plate portion 91b in place of the vertical plate portion 70b of the water stop feature 70 in the above embodiment. The swash plate portion 91b is formed so as to incline upward from the end portion on the waist wall frame 31 side of the base contact plate portion 91a toward the waist wall frame 31 side. In this case, the water flowing down through the hollow portion 33b of the inner wall surface member 33 is received on the inclined surface of the swash plate portion 91b, and then flows toward the upper surface of the base contact plate portion 91a along the inclined surface. Thereby, the water which flowed down from the hollow part 33b can be smoothly guide | induced to the drainage channel 65, and can be discharged | emitted smoothly to the balcony space BS by extension.

  The water stop member 92 shown in FIG. 4B does not have plate portions corresponding to the lower wall contact plate portion 70c and the wall back contact plate portion 70d of the water stop member 70 in the above embodiment. That is, the water-stopping member 92 has a base contact plate portion 92a and a vertical plate portion 92b extending upward from the end of the base contact plate portion 92a on the waist wall frame 31 side. It is L-shaped. The vertical plate portion 92 b is located closer to the waist wall frame 31 than the hollow portion 33 b in the thickness direction of the inner wall surface material 33, and its upper end is in contact with the lower end surface of the inner wall surface material 33. In this case, the gap 67 between the inner wall surface material 33 and the base frame 40 is closed by the vertical plate portion 92b at a position closer to the waist wall frame 31 than the hollow portion 33b. In this case, the water flowing down through the hollow portion 33b is guided to 65 after being received on the base abutting plate portion 92a of the water stopping member 92, so that the water can be discharged into the balcony space BS. In such a water-stopper 92, the upper end portion of the vertical plate portion 92b corresponds to a wall contact portion.

  4 (c) includes a base contact plate portion 93a that is in contact with the upper surface of the base frame 40, and an upper portion from the end of the base contact plate portion 93a on the waist wall frame 31 side. It has a rising plate portion 93b that extends, and is generally L-shaped as a whole. A part of the rising plate portion 93 b extends above the lower end surface of the inner wall surface material 33 on the back surface of the inner wall surface material 33, and the extended portion is in contact with the back surface of the inner wall surface material 33. Even in such a configuration, it is possible to suppress the water that has flowed back through the drainage passage 65 during a strong wind from entering the waist wall frame 31 side between the rising plate portion 93 b and the back surface of the inner wall surface material 33. In this example, instead of the L-shaped inner horizontal frame member 39, a vertical flat plate-shaped inner horizontal frame member 95 having no horizontal plate portion 39b is provided. Moreover, in the water stop function 93, the surface (in other words, the surface on the side of the balcony space BS) in contact with the back surface of the inner wall surface member 33 in the rising plate portion 93b corresponds to the wall back contact surface portion.

  The water-stopping member 94 shown in FIG. 4 (d) is made of a long square bar and has a rectangular cross section. The water stop member 94 is arranged in a direction extending along the longitudinal direction of the base frame 40 in the gap 67 between the inner wall surface material 33 and the base frame 40. The water stop member 94 is arranged in the gap 67 in the wall thickness direction on the side of the waist wall frame 31 than the hollow portion 33b. The waterstop 94 has the same vertical height as the gap 67, the upper surface is in contact with the lower end surface of the inner wall surface material 33, and the lower surface is the base frame 40 (upper flange portion 40 b). It is in contact with the upper surface. In this case, the inner wall surface material 33 is placed on the water stop member 94. Even in such a configuration, the water flowing into the gap 67 through the hollow portion 33 b is prevented from flowing toward the waist wall frame 31, so that the water can be discharged to the balcony space BS through 65. Moreover, in the water stop function 94 of this example, the upper surface corresponds to a lower wall contact surface portion, and the lower surface corresponds to a base contact portion.

  (2) In the above-described embodiment, the draining member 60 is detachably attached to the water-stopping member 70 via the piece member 75, but the draining member 60 is detachably attached to the water-stopping member 70 using screws or the like. May be. In addition, the draining member 60 may be attached to a member other than the water stop member 70. For example, the draining member 60 may be attached to the base frame 40. Specifically, a plurality of spacers may be attached to the outer surface of the web portion 40a of the base frame 40, and the draining plate portion 61 of the draining member 60 may be fixed to the spacers with screws or the like. Also in this case, the draining member 60 can be fixed while forming the drainage passage 65 between the draining member 60 and the base frame 40 by the spacer. In this case, the spacer can also be used as a closing member that closes a part of the drainage passage 65.

  (3) In the said embodiment, although the piece member 75 as an attachment part was comprised as a different body from the water stop function 70, you may comprise an attachment part integrally with the water stop function 70. For example, in the case where the water-stopper is formed of a synthetic resin, it is conceivable that the water-stopper is integrally formed including the attachment portion. Moreover, in the said embodiment, although the to-be-attached part 81 was integrally formed with the said draining member 60 in the draining member 60, the to-be-attached part is comprised as a different body from the draining member 60, and it is comprised with screws etc. You may attach to.

  (4) In the above embodiment, the present invention is applied to the balcony waist wall portion 22 provided facing the outer wall portion 17 among the balcony waist wall portions 22 provided surrounding the balcony space BS. May be applied to the balcony waist wall portion 22, that is, the balcony waist wall portion 22 provided so as to extend from the outer wall portion 17 to the outdoor side.

  Further, the present invention may be applied to the outer wall portion 17. A specific example is shown in FIG. As shown in FIG. 5, the outer wall part 17 has the outer wall surface material 98 provided facing the balcony space BS. The outer wall surface material 98 has a plurality of hollow portions 98a extending vertically, and a base frame 99 extending along the outer wall surface material 98 is provided below the hollow portion 98a. A support frame 101 extending along the base frame 99 is provided on the second living room 16 side of the base frame 99 (the side opposite to the balcony space BS). The outer wall surface material 98 is installed on the support frame 101. In addition, although illustration is abbreviate | omitted, the wall frame (equivalent to a wall base material) which supports the said outer wall surface material 98 is provided in the back surface side (2nd living room 16 side) of the outer wall surface material 98. FIG.

  A draining member 60 is provided below the outer wall surface material 98. The draining member 60 is disposed opposite to the base frame 99, and a drainage passage 105 leading to the balcony space BS is formed between the draining member 60 and the base frame 99. A water stop member 70 is provided on the back side of the draining member 60, and the water stop member 70 has a lower wall contact plate 70 c between the lower end surface of the outer wall surface material 98 and the upper surface of the support frame 101. It is fixed by being pinched.

  In the above configuration, when the water that has entered the hollow portion 98a of the outer wall surface material 98 flows down through the hollow portion 98a, the rainwater is received by the water-stopper 70 and guided to the drainage passage 105, and then the same passage. 105 is discharged to the balcony space BS. Therefore, even if the sealing material provided at the joint between the outer wall materials 98 deteriorates and rainwater enters the joint and enters the hollow portion 98a, the water enters the second living room 16 side. Therefore, the problem that the second living room 16 gets wet can be prevented.

  (5) In the said embodiment, although this invention was applied to the balcony waist wall part 22 provided in the balcony 20 of the second-floor part 14 in the building 10, a balcony has an outer wall part on the first-floor part 13, and a 1st-floor room. The present invention may be applied to the outer wall as long as it is provided adjacently. This makes it possible to prevent water from entering the first floor room.

  In the said embodiment, although this invention was applied to the balcony waist wall part 22 (equivalent to a wall part) surrounding the balcony space BS as an outdoor open space, with respect to the wall part provided surrounding other outdoor open spaces, such as a veranda. The present invention may be applied. Further, in a building having a rooftop, a parapet wall portion may be provided surrounding the rooftop space (outdoor open space). In this case, the present invention may be applied to the parapet wall portion.

  DESCRIPTION OF SYMBOLS 10 ... Building, 17 ... Outer wall part as wall part, 20 ... Balcony, 22 ... Balcony waist wall part as wall part, 33 ... Inner wall surface material as wall surface material, 33b ... Hollow part, 40 ... Base as base member Frame, 60 ... draining member, 62 ... horizontal plate portion, 65 ... drainage passage, 67 ... gap, 70 ... water stop function as water stop member, 70a ... base contact plate portion as base contact portion, 70c ... Lower wall abutting plate part, 75 ... piece member as attachment part, 81 ... attached part, 85,86 ... occlusion member, BS ... balcony space as outdoor open space.

Claims (9)

It is equipped with a wall part that surrounds the outdoor open space that is open to the outdoors,
The wall portion includes a wall surface member having a hollow portion provided facing the outdoor open space and extending vertically, and a base member provided below the wall surface material and extending along the wall surface material, Applied to a building in which a predetermined gap is formed between the lower end surface of the material and the upper surface of the base member;
It has a long shape along the width direction of the wall material, and water flowing into the gap through the hollow portion of the wall material is prevented from flowing from the gap to the back side of the wall material in the thickness direction of the wall material. A water-stopping member,
A draining member provided to face the base member below the wall surface material, and drain the water flowing down along the surface of the wall surface material;
A wall drainage structure in a building, wherein the drainage member forms a drainage passage from the gap to the outdoor open space between the drainage member and the base member. The draining member has a mounted portion disposed in a gap between the upper surface of the base member and the lower end surface of the wall surface material,
The wall drainage structure in a building according to claim 1, wherein the water stop member is provided with an attachment portion for detachably attaching the attached portion of the draining member. The water stop member is provided with a plurality of attachment portions at predetermined intervals along the longitudinal direction,
The draining member is provided with the attached portion corresponding to the position of the attaching portion,
The wall drainage structure in a building according to claim 2, wherein water flowing down through the hollow portion is led to the drainage passage through the plurality of attachment portions. The water stop member is
A base contact portion in contact with the upper surface of the base member;
A rising portion that rises upward from the base contact portion and has a wall contact portion that is in contact with the wall surface material;
The at least one part of the said wall contact part is contact | abutted by the back surface side of the said wall surface material rather than the said hollow part with respect to the said wall surface material. Wall drainage structure in the listed building. The draining member has a horizontal plate portion provided to enter a gap between the upper surface of the base member and the lower end surface of the wall surface material,
The base abutting portion extends from the rising portion toward the outdoor open space side, and part of the base abutting portion is opposed to the horizontal plate portion in the vertical direction, and the gap between the opposed portion and the horizontal plate portion is the The wall drainage structure in a building according to claim 4, wherein the wall drainage structure is a part of a drainage passage.   The wall contact portion extends in the thickness direction of the wall surface material, and contacts the lower wall surface along the lower end surface of the wall surface material, and the back surface of the wall surface material extends in the height direction of the wall surface material. 6. The wall drainage structure in a building according to claim 4, wherein the wall drainage structure has at least one of the wall abutting surface portions abutted along the wall. A wall support member for supporting the wall material from below;
The water stop member is a part of the wall contact portion, and a lower wall contact plate portion with the lower wall contact surface portion as an upper surface is sandwiched between the lower end surface of the wall surface material and the wall support member. The wall drainage structure in a building according to claim 6, wherein the wall drainage structure is fixed by being fixed.   The said wall contact part has the said wall back contact surface part, The wall drainage structure in the building as described in any one of Claim 6 or 7 characterized by the above-mentioned. The drainage passage is provided with a closing member for closing a part of the drainage passage.
The wall drainage structure in a building according to any one of claims 1 to 8, wherein water is discharged through a portion of the drainage passage where the blocking member is not provided.

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