JP6386729B2 - Building wall structure - Google Patents

Description

  The present invention relates to a wall structure of a building.

  In a building such as a house, a wall portion such as a parapet with a headboard provided at the upper end may be installed outdoors. Here, with respect to a wall portion having a cap, a technique for ventilating the space in the wall through a gap between the wall main body and the cap is proposed. For example, there is a configuration in which a vent hole is formed in the upper end portion of the wall main body, and the space in the wall is communicated with the gap between the wall main body and the headboard through the vent hole so as to allow ventilation (for example, see Patent Document 1).

  In this configuration, the upper end portion of the wall main body is in a state of entering the groove portion of the headboard, and a draining member is provided between the side surface of the wall main body and the headboard. The draining member is configured such that air flows in the vertical direction while meandering in the wall thickness direction. According to this configuration, even when the wind blows up along the side surface of the wall portion, even if water such as rainwater enters the interior of the draining member together with the air, Proceeding while meandering makes it difficult to reach the wall space.

JP 2012-149488 A

  Here, in the structure in which the air flow meanders in the wall thickness direction and the wall height direction in the gap between the wall main body and the headboard, the reliability of water intrusion regulation can be increased as the number of meandering is increased. However, since the air flow distance is small in the wall thickness direction and wall height direction, the configuration of the draining member becomes more complex as the number of meanders increases, while the reliability of water intrusion control is It is assumed that it will not improve as much as the complexity. Therefore, in the configuration in which the air in the wall is ventilated through the gap between the wall main body and the headboard, there is room for improvement with respect to water intrusion regulation.

  This invention is made | formed in view of the said situation, and makes it the main objective to perform the ventilation | gas_flowing in a wall suitably through the clearance gap in the wall part in which the clearance gap is formed in the lower side of headboard. .

  Hereinafter, means and the like effective for solving the above-described problems will be described while showing functions and effects as necessary. In the following, for easy understanding, the corresponding configuration in the embodiment of the invention is appropriately shown in parentheses, but is not limited to the specific configuration shown in parentheses.

  The wall structure of the building of the first invention is a wall structure of a building including a wall portion (parapet 15) standing upwards outdoors, and the wall portion forms a wall surface of the wall portion. It has a main body (parapet main body 16) and a headboard (headboard 17) that covers the upper end of the wall main body, and intersects the wall main body and the headboard in the wall width direction of the wall portion. A headboard gap (headboard gap 18) that is open in a direction is provided, and an inner wall space (inner wall space 21) that is an inner space of the wall body and the headboard gap are provided on the outer periphery of the wall body. A wall ventilation part (wall ventilation part 41) is provided to allow ventilation between the barrier wall and the headboard gap to block the air flow and to extend along the wall width direction (side part 51a). , The upper surface portion 51b) is provided, so that the gap that is the open portion of the headboard gap A guide passage that guides the air flow in the wall width direction while blocking the air flow between the discharge portion (gap opening portion 18a) and the wall ventilation portion in the direction intersecting the wall width direction. A restriction passage 53) is formed.

  According to the first invention, in the headboard gap, the air flow between the wall ventilation part and the gap opening part is guided in the wall width direction by the guide passage, while the wall thickness direction and the wall height. Since the direction is cut off, even if the wind blows up along the side of the wall, even if rain or other water flows from the outside into the gap between the headboards, the water will move along with the air in the wall width direction. There is a high possibility of adhering to the inner peripheral surface of the guide passage while flowing along. For this reason, it can suppress that water permeates into the wall space from the outside through the gap between the caps.

  Moreover, since the guide passage extends in the wall width direction in a limited space called the gap between the wall body and the headboard, compared to the configuration in which the guide passage extends in the wall thickness direction or the wall height direction, It is possible to set the length dimension of the guide passage large. Here, the larger the length of the guide passage, the easier the water flowing along with the air in the guide passage adheres to the inner peripheral surface of the guide passage. Can be suppressed.

  As described above, the ventilation of the space in the wall can be suitably performed through the gap between the caps.

  In a second invention, in the first invention, a passage forming body (flow restricting body 51) that forms the guide passage by having the blocking portion is provided, and the blocking portion defines the gap between the headboards as described above. By partitioning into the wall ventilation part side and the gap opening part side, the flow of air along the inner circumferential surface of the headboard is blocked in the direction in which the gap opening part and the wall ventilation part are arranged, In the passage forming body, the space on the wall ventilation portion side partitioned by the blocking portion is the guide passage.

  According to the second aspect of the invention, since the blocking portion of the passage forming body is provided in the gap between the caps, the air flow is guided in the wall width direction, and the air flow is blocked in the wall thickness direction and the wall height direction. The configuration to be realized can be realized in the gap between caps. In addition, since the guide passage is formed by the passage formation body, the guide passage can be constructed in a narrow space called the headboard gap by an easy operation of attaching the passage formation body to the wall main body or the headboard. Thereby, the work burden at the time of constructing a guide passage can be reduced.

  In 3rd invention, in 2nd invention, the said interruption | blocking part is an intermediate part (side part 51a) provided between the said clearance gap opening part and the said wall ventilation part, The said clearance gap opening part, and the said wall ventilation. A cover portion (upper surface portion 51b) extending from the intermediate portion toward the opposite side of the gap opening portion in the direction of alignment with the portion and covering the wall ventilation portion from the headboard side, In the formed body, a space formed between the cover portion and the wall main body on the wall ventilation portion side of the intermediate portion is used as the guide passage.

  According to the third aspect of the invention, since the blocking portion has the covering portion, the wall ventilation portion and the gap opening portion can be provided even if the blocking portion is not in a state of being spanned between the wall body and the headboard. In the arrangement direction, it is difficult for air or water to flow over the blocking part (intermediate part) from the headboard side and flow into the wall ventilation part. In this case, even if the passage-forming body is fixed only to the wall main body in a state of being separated from the headboard, the water intrusion regulation by the blocking part can be realized, so that it is dedicated to the specifications of the headboard and the wall main body. It is possible to make the passage forming body versatile, instead of manufacturing the passage forming body. Thereby, a cost burden regarding manufacture of a channel | path formation body can be reduced.

  In a fourth invention, in the second or third invention, in the passage forming body, a passage opening portion (passage opening portion 54) that opens the guide passage toward the wall width direction is provided in the wall width direction. Are provided at both ends of the blocking portion.

  According to the fourth invention, since air can flow in both the wall width direction with respect to the wall passage portion, even if the air flow is restricted in the wall thickness direction or the wall height direction. The air easily flows along the wall width direction in the guide passage. For this reason, it can avoid that the ventilation | gas_flowing amount in a guide channel is insufficient.

  According to a fifth invention, in any one of the second to fourth inventions, the gap opening portions are arranged as a pair on both sides of the wall body in the wall thickness direction of the wall portion, A non-guide passage (non-regulating passage 55) different from the guide passage is provided, and the non-guide passage passes through the space between the blocking portion of the passage forming body and the coping. Ventilation between the pair of gap opening portions is enabled without intervention.

  According to 5th invention, since ventilation | gas_flowing between a pair of clearance gap opening parts is performed through a non-guide channel | path, it is easy for external air to pass through a coping gap. For this reason, even if water infiltrates into the headboard gap together with air, drying in the headboard gap can be promoted by ventilating the non-guide passage in addition to the guide passage.

  In a sixth invention, in any one of the second to fifth inventions, the passage forming body has an overlapping portion (lower surface portion 51c) overlapped with an outer peripheral surface of the wall body, and the passage forming In the body, a space defined by the overlapping portion and the blocking portion is used as the guide passage.

  According to the sixth invention, in the passage forming body, the guide passage is formed between the overlapping portion and the blocking portion, and therefore, for example, the guide passage is formed between the outer peripheral surface of the wall body and the blocking portion. Unlike the configuration described above, even if the outer peripheral surface of the wall main body is not a flat surface, the flow of air in the wall thickness direction and the wall height direction can be reliably blocked by the blocking portion.

  In addition, it is preferable that a communicating hole communicating with the wall ventilation portion is formed in the overlapping portion. In this case, since the positional relationship between the blocking portion and the communication hole is set in the passage forming body, the blocking portion and the communication hole are arranged in an appropriate positional relationship regardless of the specifications of the wall body and the headboard. can do.

  In a seventh aspect based on the sixth aspect, the passage forming body has an insertion portion (insertion portion 61) that extends from the overlapped portion and enters the wall ventilation portion.

  According to the seventh aspect, the passage forming body can be aligned with the wall main body by an easy operation of overlapping the overlapping portion on the outer peripheral surface of the wall main body while inserting the insertion portion into the wall ventilation portion. For this reason, the work burden at the time of attaching a channel | path formation body to a wall main body can be reduced.

  According to an eighth aspect, in the seventh aspect, the passage forming body extends from the insertion portion along a direction in which the overlapping portion extends, and is hooked from the inner space side to the outer peripheral portion of the wall body. Part (hook part 62).

  According to the eighth invention, the passage forming body can be fixed to the wall main body by an easy operation of pushing the insertion portion together with the hook portion into the wall ventilation portion.

  In a ninth invention, in any one of the first to eighth inventions, the guide passage is meandering in at least one of a wall height direction and a wall thickness direction of the wall portion in the wall width direction. Extending along.

  According to the ninth aspect, in the guide passage, the air flowing along the wall width direction meanders, so that the water flowing along with the air is more likely to adhere to the inner peripheral surface of the guide passage. For this reason, it is possible to further enhance the effect of suppressing water intrusion into the wall space in the guide passage.

Top view of building AA line sectional view of FIG. BB sectional view of FIG. CC sectional view of FIG. Diagram for explaining air flow in the parapet The perspective view which shows the structure of a flow control body Exploded perspective view of another flow restrictor

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the wall structure of the present invention is embodied on the roof of a building. FIG. 1 is a plan view of the building 10.

  In FIG. 1, a building 10 has a roof 12 provided on the building body. The roof 12 is a land roof (flat roof), and the roof surface 12a has a predetermined water gradient.

  The roof 12 has a roof base supported by a building frame and a roof surface material provided on the roof base. The roof base has a field plate installed on the roof beam and the like, and a heat insulating material installed on the field plate, and the roof surface material is overlaid on the heat insulating material. . The roof surface material is a waterproof member such as a sheet material or steel material to which a water-resistant film is applied, and the upper surface thereof forms the roof surface 12a. In this case, the roof surface 12a corresponds to a waterproof surface having waterproofness. Further, the roof 12 may constitute a rooftop on which people can enter and exit.

  The roof 12 has a parapet 15 that extends along the periphery of the roof 12. The parapet 15 is a low handrail wall that stands upward from the roof surface 12a. In the building 10, the outer wall of the building main body protrudes upward from the roof surface 12 a, and the protruding portion forms a parapet 15. The roof surface 12 a is in a state of being arranged in a region surrounded by the parapet 15.

  The configuration of the parapet 15 will be described with reference to FIGS. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along line BB in FIG. 1, and FIG. 4 is a cross-sectional view taken along line CC in FIG.

  As shown in FIGS. 2 and 3, the parapet 15 includes a parapet main body 16 that forms a side surface of the parapet 15 and a headboard 17 provided on the parapet main body 16. Both the parapet main body 16 and the headboard 17 extend along the width direction (wall width direction) of the parapet 15. A gap is formed between the parapet main body 16 and the headboard 17, and this gap is a headboard gap 18. The headboard gap 18 extends along the wall width direction. The parapet 15 corresponds to the wall portion, and the parapet main body 16 corresponds to the wall portion main body.

  In the parapet main body 16, the internal space is a wall space 21. The parapet 15 includes a main body base 22 fixed to the building frame and a pair of exterior members 23 and 24 provided with the main body base 22 interposed therebetween. The main body base 22 includes a base frame 25 having a plurality of frame members, and a base plate 26 disposed on the roof inner peripheral side of the base frame 25. The base plate 26 is overlapped with the inner exterior material 24 arranged on the inner circumferential side of the roof among the outer packaging materials 23 and 24, while being separated from the outer outer packaging material 23 arranged on the outer circumferential side of the roof, The inner space 21 is formed between the outer exterior member 23 and the base plate 26. In this case, the base frame 25 is arranged in the wall space 21.

  The base frame 25 has an upper end frame member 25 a that forms the upper end of the base frame 25. The upper end frame member 25a is formed of lightweight grooved steel having a U-shaped cross section, and is a horizontal frame member that extends along the wall width direction with the groove portion directed downward. In this case, the upper surface (the outer surface of the web) of the upper end frame member 25 a forms the upper end surface of the base frame 25.

  Note that the lower part of the parapet 15 on the outer wall (the part that divides the indoor space) has the base frame 25, the outer exterior member 23, and the wall space 21, while the base plate 26, Instead of the inner exterior material 24, the interior material and the heat insulating material attached to the base frame 25 are provided, and the inner wall space 21 is formed between the outer exterior material 23 and the interior material (heat insulating material). Yes. The inner wall space 21 extends substantially over the entire outer wall in the direction of the wall, and a ventilation port for ventilating the inner wall space 21 is provided on the outer wall. The vents are arranged at the upper end and the lower end of the outer wall, respectively, so that the outside air that has flowed into the wall space 21 from one of the upper vent and the lower vent flows out through the other. Thus, ventilation of the wall space 21 is performed.

  The base plate 26 is formed of plywood or the like, and is fixed to the side surface of the base frame 25 with screws or the like. The upper end surface of the base plate 26 is disposed at substantially the same height as the upper end surface of the base frame 25.

  The outer exterior member 23 is an outer wall surface material such as a siding board, and is fixed to the surface of the base frame 25 on the outer periphery side of the roof with screws or the like. The inner exterior member 24 is a waterproof plate in which a water-resistant film is applied to a steel material, and is joined to the base plate 26 with an adhesive or the like in a state of being stacked on the base plate 26. The upper end surfaces of the exterior members 23 and 24 are disposed at substantially the same height as the upper end surface of the base frame 25.

  The parapet main body 16 has a waterproof sheet 27 that covers the upper surfaces of the base frame 25, the base plate 26, and the exterior materials 23 and 24 from above. The waterproof sheet 27 is formed of a water-resistant material and has flexibility. In the thickness direction (wall thickness direction) of the parapet 15, one end of the waterproof sheet 27 is overlaid on the finished surface of the outer exterior member 23, and the other end is overlaid on the finished surface of the inner exterior member 24. In this case, the upper surface of the waterproof sheet 27 forms the upper end surface of the parapet main body 16.

  The headboard 17 is formed of a synthetic resin material, a metal material, or the like in a substantially U-shaped vertical cross section, and has a groove portion that is open downward. The headboard 17 has an upper surface portion 17a that forms the upper surface of the headboard 17 and side surface portions 17b and 17c that form side surfaces. The upper surface portion 17 a is disposed at a position spaced upward from the parapet main body 16 and faces the upper end surface of the parapet main body 16. The side surface portions 17 b and 17 c extend downward from the upper surface portion 17 a, and the lower end portions of the side surface portions 17 b and 17 c are disposed at positions lower than the upper end surface of the parapet main body 16. In this case, the side surface portions 17 b and 17 c face the side surface of the parapet main body 16. The separation distance between the side surface portions 17b and 17c is larger than the thickness dimension of the parapet main body 16, and the side surface portions 17b and 17c are arranged at positions separated from the parapet main body 16 in the wall thickness direction.

  The headboard gap 18 is formed between the outer peripheral surface of the parapet main body 16 and the inner peripheral surface of the headboard 17, and extends along the inner peripheral surface of the headboard 17. The headboard gap 18 has a gap opening 18 a that opens the headboard gap 18 toward the side of the parapet 15 in the wall thickness direction. The gap opening portions 18 a are disposed as a pair on the roof outer peripheral side and the roof inner peripheral side of the parapet 15, and both are disposed at positions lower than the upper end of the parapet main body 16. Of the pair of gap opening portions 18a, the gap opening portion 18a on the outer periphery side of the roof is disposed between the outer exterior member 23 of the parapet main body 16 and the outer side surface portion 17b of the headboard 17, and the gap opening portion on the inner periphery side of the roof. 18 a is disposed between the inner exterior member 24 of the parapet main body 16 and the outer side surface portion 17 b of the headboard 17.

  The upper surface (upper surface portion 17a) of the headboard 17 is inclined in such a direction that the end portion on the roof outer peripheral side becomes the upper end and the end portion on the roof inner peripheral side becomes the lower end. In this case, of the side surface portions 17b and 17c, the upper end portion of the outer side surface portion 17b disposed on the roof outer peripheral side is disposed at a position higher than the upper end portion of the inner side surface portion 17c disposed on the roof inner peripheral side. . For this reason, when water such as rainwater adheres to the upper surface of the headboard 17, the water flows down along the upper surface of the headboard 17 toward the inner periphery of the roof.

  The headboard 17 is fixed to the parapet main body 16 by the headboard holder 31. As shown in FIG. 2, the headboard holder 31 is fixed to the fixing portion 32 that is fixed in a state of being superimposed on the upper end surface of the parapet main body 16, the support portion 33 that supports the upper surface portion 17 a of the headboard 17 from below, and the headboard 17. It has the latching | locking part 34 hooked. The headboard holder 31 is formed in a plate shape from a synthetic resin material, a metal material, or the like, and the fixing portion 32, the support portion 33, and the locking portion 34 are respectively plate portions.

  The fixing portion 32 is overlapped on the upper surface of the upper end frame member 25a with the waterproof sheet 27 interposed therebetween, and a fixing tool 35 such as a screw penetrates the fixing portion 32 and the waterproof sheet 27 and is driven into the web of the upper end frame member 25a. Therefore, it is fixed to the upper end frame member 25a. The fixing part 32 is formed with a fixing hole 32a through which the fixing tool 35 is inserted. The fixing holes 32a are elongated holes extending along the wall thickness direction, and a plurality of the fixing holes 32a are arranged along the wall width direction.

  The support portion 33 extends upward from the fixed portion 32, and supports the headboard 17 in a state of being in contact with the lower surface of the upper surface portion 17 a of the headboard 17. A pair of support portions 33 are provided along the wall thickness direction. One support portion 33 extends from one end of the fixing portion 32, and the other support portion 33 extends from the other end of the fixing portion 32. In this case, the roof outer peripheral side and the roof inner peripheral side of the headboard 17 are supported by the pair of support portions 33.

  Similarly to the support portion 33, a pair of the lock portions 34 are provided along the wall thickness direction, and each lock portion 34 extends from another support portion 33. Of the pair of locking portions 34, the locking portion 34 extending toward the roof outer peripheral side is hooked on the outer side surface portion 17 b of the headboard 17, and the locking portion 34 extending toward the roof inner peripheral side is It is caught on the outer side surface portion 17b. The headboard 17 has a locked portion 36 that extends from the side surface portions 17b and 17c toward the inside of the groove portion, and each locking portion is arranged at a position separated from the parapet main body 16. Since each of the hooks 34 is hooked on the locked portion 36, the position is maintained with respect to the parapet main body 16.

  The locked portion 36 is hooked on the lower end surface of the locking portion 34. In this case, in the configuration in which the headboard 17 is mounted on the headboard holder 31 from above, the locked portion 36 of the headboard 17 is hooked on the hooking portion 34 of the headboard holder 31 from below. The separation from the upper portion 31 is restricted. That is, it is restricted that the cap 17 is separated upward from the parapet main body 16.

  In the cap board holder 31, the locking part 34 is elastically deformable. For this reason, when the headboard holder 31 is fixed to the parapet main body 16 and then the headboard 17 is attached to the headboard holder 31, the locking portion 34 is elastically deformed toward the side closer to the parapet main body 16, thereby The stop portion 36 is easily moved to the lower side of the locking portion 34 of the headboard holder 31.

  In the configuration in which the headboard 17 is fixed to the parapet main body 16 via the headboard holder 31, the thickness dimension of the parapet main body 16 is within an allowable range (the parapet main body 16 is interposed between the pair of locking portions 34 of the headboard holder 31. The caps 17 can be attached to the parapet main body 16 regardless of the thickness dimension of the parapet main body 16.

  The headboard 17 has a blindfold 37 that blocks the line of sight into the headboard gap 18. The blindfold portion 37 is provided for each of the gap opening portions 18 a and extends from the side surface portions 17 b and 17 c toward the side surface of the parapet main body 16. The blindfold portion 37 is disposed below the locked portion 36, and the portion where the locking portion 34 is hooked on the locked portion 36 is difficult to see from below the headboard 17.

  As shown in FIGS. 3 and 4, the parapet main body 16 is formed with a wall ventilation portion 41 that allows the intra-wall space 21 and the headboard gap 18 to communicate with each other. Inflow and outflow of outside air into the wall space 21 are possible. In this case, on the outer wall including the parapet 15, the above-described ventilation opening at the upper end is formed by the gap opening portion 18 a.

  The wall ventilation part 41 is a through hole that vertically penetrates the upper surface of the parapet main body 16. In the upper surface portion of the parapet main body 16, the wall ventilation portion 41 penetrates the web of the upper end frame member 25 a and the waterproof sheet 27, and opens the in-wall space 21 upward. The wall ventilation part 41 is arrange | positioned in the approximate center of the parapet 15 in the wall thickness direction. In this case, the wall ventilation portion 41 is disposed substantially in the middle of the gap opening portions 18 a in the direction in which the pair of gap opening portions 18 a are arranged along the inner peripheral surface of the headboard 17. The ease of air flow is the same at each gap opening 18a.

  The parapet 15 is provided with a flow restricting body 51 that restricts the air flow in the headboard gap 18. The flow restricting body 51 is disposed in the headboard gap 18 and can guide air flowing into or out of the wall vent 41 in the wall width direction. The flow restricting body 51 is formed in a flat box shape using a metal material, a synthetic resin material, or the like, and extends along the wall width direction in a state of being superimposed on the upper end surface of the parapet main body 16. The internal space of the flow restricting body 51 is a restricting passage 53 through which the air in the headboard gap 18 flows. The flow restricting body 51 includes a passage opening portion 54 that opens the restricting passage 53 in the wall width direction, and the passage opening portions 54 are disposed at both ends of the flow restricting body 51 in the wall width direction.

  In addition to the restriction passage 53 surrounded by the outer periphery of the flow restricting body 51, the headboard gap 18 includes a non-restriction passage 55 that is not surrounded by the outer periphery of the flow restricting body 51. The non-regulating passage 55 is a space arranged outside the flow restricting body 51. In the non-regulating passage 55, the flow direction of air is regulated by the outer peripheral surface of the parapet main body 16 and the inner peripheral surface of the headboard 17, and any of the wall thickness direction and the wall height direction as well as the wall width direction is restricted. The direction of air flow is not regulated. In other words, the air is not guided so as to flow along the wall width direction.

  The height dimension of the flow restricting body 51 is smaller than the separation distance between the upper end surface of the parapet main body 16 and the upper surface portion 17 a of the headboard 17, and the non-regulating passage 55 is located between the flow restricting body 51 and the headboard 17. It is also formed in a state of entering. A plurality of flow regulating bodies 51 are provided at predetermined intervals along the wall width direction. In this case, the non-regulating passage 55 is also formed between the adjacent flow restricting bodies 51.

  The flow restricting bodies 51 are arranged side by side along the wall width direction with respect to the headboard holder 31 (see FIG. 1). Here, like the flow restricting body 51, a plurality of the cap restricting holders 31 are provided at a predetermined interval along the width direction of the parapet 15, and the flow restricting bodies 51 are arranged between the adjacent caplet holders 31. Yes. For this reason, unlike the configuration in which the headboard holder 31 and the flow restricting body 51 are arranged so as to overlap each other in the height direction or the thickness direction of the parapet 15, either the headboard holder 31 or the flow restricting body 51 is attached to the parapet main body 16 first. Even when attached, the other can be attached to the parapet main body 16.

  The flow restricting body 51 has a pair of side surface portions 51a, an upper surface portion 51b, a lower surface portion 51c, and a pair of end surface portions 51d as outer peripheral portions, and the side surface portion 51a, the upper surface portion 51b, and the lower surface portion 51c are arranged in the wall width direction. The end surface portion 51d is arranged in a direction extending along the wall thickness direction. In the flow restricting body 51, the passage opening 54 is formed as an opening in each end face 51d. In the flow restricting body 51, a restricting passage 53 is formed inside the outer peripheral portion such as the side surface portion 51a, and the restricting passage 53 extends along the wall width direction along the side surface portion 51a, the upper surface portion 51b, and the lower surface portion 51c. It extends.

  The flow restricting body 51 is installed on the wall ventilation part 41. In this case, in the flow restricting body 51, the lower surface portion 51c is overlapped with the upper end surface of the parapet main body 16, and a lower surface hole 57 communicating with the wall ventilation portion 41 is formed in the lower surface portion 51c. In this case, the regulation passage 53 and the in-wall space 21 communicate with each other through the lower surface hole 57 and the wall ventilation portion 41 so as to allow ventilation.

  In the flow restricting body 51, the air flow in the restricting passage 53 is blocked by the pair of side surface portions 51a, the upper surface portion 51b, and the lower surface portion 51c in the direction intersecting the wall width direction (wall width direction and wall thickness direction). On the other hand, the wall width direction is not blocked by the passage opening portion 54 formed on the end surface portion 51d.

  In the flow restricting body 51, the side surface portion 51a is disposed between the gap opening portion 18a and the wall ventilation portion 41, and corresponds to an intermediate portion. Further, the upper surface portion 51b covers the wall ventilation portion 41 at a position spaced upward from the upper end surface of the parapet main body 16, and corresponds to a covering portion. The side surface portion 51a and the upper surface portion 51b block the flow of air along the inner peripheral surface of the headboard 17 in the direction in which the gap opening portion 18a and the wall ventilation portion 41 are arranged, and constitute a blocking portion. In the present embodiment, the upper surface portion 51b is in a state in which the pair of side surface portions 51a are connected, and extends from the one side surface portion 51a toward the other side surface portion 51a. In this case, the upper surface portion 51b extends from the side surface portion 51a on the outer periphery side of the roof toward the side opposite to the clearance opening portion 18a on the outer periphery side of the roof, and the clearance on the inner periphery side of the roof is opened from the side surface portion 51a on the inner periphery side of the roof. It can be said that it has extended toward the opposite side to the part 18a.

  The restriction passage 53 of the flow restricting body 51 corresponds to a guide passage that guides the air flow along the wall width direction, and the non-regulation passage 55 corresponds to a non-guide passage that is not a guide passage. The flow restricting body 51 corresponds to a passage forming body that forms a guide passage.

  In the flow restricting body 51, the lower surface portion 51c is overlapped with the upper end surface of the parapet main body 16, and corresponds to the overlapping portion. The flow restricting body 51 has an insertion portion 61 inserted into the wall ventilation portion 41 and a hook portion 62 hooked on the upper end portion of the parapet 15. The insertion portion 61 extends downward from the lower surface portion 51 c, and the hook portion 62 is provided in a portion of the insertion portion 61 that enters the in-wall space 21. The insertion portion 61 is formed in a cylindrical shape extending in the vertical direction, and extends along the peripheral edge portion of the lower surface hole 57. In this case, the lower surface hole 57 is communicated with the wall space through the in-cylinder space of the insertion portion 61. The hook portion 62 protrudes from the insertion portion 61 toward the outer circumferential side of the cylinder, and extends along the circumferential direction of the cylinder. In this case, the insertion portion 61 is hooked on the lower surface of the web of the upper end frame member 25 a of the parapet main body 16 and restricts the flow restricting body 51 from separating upward from the parapet main body 16. Further, the flow restricting body 51 and the parapet main body 16 are fixed by joining the hook portions of the hook portion 62 and the upper end frame member 25a with an adhesive or the like.

  The regulation passage 53 has a shape meandering up and down in the wall width direction. The flow restricting body 51 has an upper rib 65 extending downward from the upper surface portion 51b and a lower rib 66 extending upward from the lower surface portion 51c. Each of the ribs 65 and 66 extends along the wall thickness direction, and a plurality of ribs 65 and 66 are arranged along the wall width direction (alignment direction of the passage opening portions 54). The upper rib 65 is spaced upward from the lower surface portion 51c, and the lower rib 66 is spaced downward from the upper surface portion 51b. Here, the extension dimension of the upper rib 65 from the upper surface part 51b and the extension dimension of the lower rib 66 from the lower surface part 51c are both larger than half of the separation distance between the upper surface part 51b and the lower surface part 51c. Thus, the upper rib 65 and the lower rib 66 are arranged at positions that do not overlap in the wall width direction. In this case, the upper ribs 65 and the lower ribs 66 are alternately arranged, whereby the regulation passages 53 meander in the wall height direction.

  In the end surface portion 51d of the flow restricting body 51, the passage opening portion 54 extends downward from the upper surface portion 51b, and is spaced upward from the lower surface portion 51c. In this case, similarly to the lower rib 66, the end surface portion 51d extends upward from the lower surface portion 51c and is spaced downward from the upper surface portion 51b. In the wall width direction, an upper rib 65 is disposed between the end surface portion 51d and the lower rib 66, and the regulation passage 53 is meandered by the end surface portion 51d in addition to the ribs 65 and 66. Yes.

  The flow restricting body 51 has a hole edge portion 67 that protrudes upward from the lower surface portion 51 c and extends along the peripheral edge portion of the lower surface hole 57. The hole edge portion 67 is disposed above the insertion portion 61 with the lower surface portion 51 c interposed therebetween, and is formed in a cylindrical shape extending in the vertical direction, like the insertion portion 61.

  Next, the flow of air in the parapet 15 will be described with reference to FIGS. FIG. 5 is a view for explaining the flow of air in the parapet 15. 5 is a plan view of the parapet 15. In the plan view of the parapet 15, the headboard 17 is shown by a virtual line in order to show the internal structure of the parapet 15.

  In the outer wall having the parapet 15, when air flows into the wall space 21 from the ventilation port at the lower end, the air A 1 in the wall space 21 is restricted through the wall ventilation portion 41 as shown in FIGS. 4 and 5. After flowing into the passage 53 (in the flow restricting body 51), flowing in the wall width direction along the restriction passage 53 and flowing out from the passage opening 54 to the non-regulation passage 55, the wall thickness direction along the inner peripheral surface of the headboard 17 Or flows in the wall height direction and flows out of the gap opening 18a.

  When the outside air flows into the wall space 21 from the gap opening 18a, the outside air flows in the opposite direction to the air A1. In this case, even if water such as rainwater flows into the restriction passage 53 from the gap opening 18a together with outside air, the outside air flows while meandering between the ribs 65 and 66 along the wall width direction in the restriction passage 53. Therefore, it is easy for water to be caught by the side surfaces of the ribs 65 and 66 and to adhere to the inner peripheral surfaces of the upper surface portion 51b and the lower surface portion 51c. For this reason, it is suppressed that water permeates into the wall space 21 through the wall ventilation part 41 from the outdoors.

  On the other hand, as air that flows into the headboard gap 18 from one gap opening 18a of the pair of gap opening 18a, flows through the non-regulation passage 55 without passing through the restriction passage 53, and flows out from the other gap opening 18a to the outside. 3 and FIG. 5, the air A2 flowing through the gap between the flow restrictor 51 and the headboard 17 and the flow restrictor 51 side in the wall width direction as shown in FIG. 2 and FIG. And air A3 flowing in the direction. Both of these airs A2 and A3 have an accelerating effect of urging to discharge the water that has entered the headboard gap 18 or accumulated moisture to the outside, and to dry the water that has entered the headboard gap 18. Yes.

  Further, since the non-regulating passage 55 is also formed between the flow restricting body 51 and the headboard 17, compared to the configuration in which the non-regulating passage 55 is not formed between the flow restricting body 51 and the headboard 17, It is possible to increase the amount of outside air flowing through the non-regulating passage 55 and passing through the headboard gap 18.

  Next, the manufacturing procedure of the flow restricting body 51 will be briefly described with reference to FIG. FIG. 6 is a perspective view showing the configuration of the flow restricting body 51. FIG. 6 is a view showing a state in which the flow restricting body 51 is opened.

  As shown in FIG. 6, the flow restricting body 51 is formed by folding and assembling an integrally molded molded member. The molded member is formed in a plate shape as a whole. The molding member has one plate portion that forms one side surface portion 51a, upper surface portion 51b, and lower surface portion 51c of the pair of side surface portions 51a. From one plate surface of the plate portion, the other side surface portion 51a, the pair of end surface portions 51d, the upper rib 65, the lower rib 66, and the protrusions forming the hole edge portion 67 protrude, and the other plate Projections that form the hole edges 67 project from the surface. About the molding member, one side part 51a, upper surface part 51b, and lower surface part 51c are formed by bending the plate part so that the plate surface on which the protruding part or the like forming the side part 51a protrudes is inside. The upper end portion of the other side surface portion 51a is joined to the upper surface portion 51b with an adhesive or the like.

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

  In the regulation passage 53 of the headboard gap 18, the air flow is guided along the wall width direction, but is blocked in the wall thickness direction and the wall height direction. Even if the water flows in along with the air, there is a high possibility that the water will adhere to the inner peripheral surface of the restriction passage 53 while flowing along the wall width direction. In addition, since the restriction passage 53 extends in the wall width direction in the limited space of the headboard gap 18, the restriction passage 53 is compared with a configuration in which the restriction passage 53 extends in the wall thickness direction or the wall height direction. A large length dimension of 53 can be secured. Here, as the length dimension of the restriction passage 53 is larger, the water flowing along with the air in the restriction passage 53 is more likely to adhere to the inner peripheral surface of the restriction passage 53. Intrusion can be suppressed more reliably. As described above, it is possible to favorably vent the inner space 21 through the head gap 18.

  Since the restricting passage 53 is formed by the flow restricting body 51, the restricting passage 53 can be constructed in a narrow space such as the headboard gap 18 by an easy operation of attaching the flow restricting body 51 to the parapet main body 16. Thereby, the work burden at the time of constructing the regulation passage 53 can be reduced.

  Since the flow restricting body 51 has the side surface portion 51 a and the upper surface portion 51 b, the restricting passage 53 can be formed without using the inner peripheral surface of the headboard 17. For this reason, as long as the flow restricting body 51 is attached to the parapet main body 16, the flow restricting body 51 may not be fixed to the headboard 17, and the flow restricting body 51 can be installed at a position away from the headboard 17. In this case, unlike the configuration in which the flow restricting body 51 is attached to both the parapet main body 16 and the headboard 17, instead of manufacturing the dedicated flow restricting body 51 according to the specifications of the headboard 17 and the parapet main body 16, The flow restricting body 51 can be generalized. Thereby, a cost burden regarding manufacture of the flow control body 51 can be reduced.

  In the flow restricting body 51, since the restricting passage 53 is open in both the wall width direction, even if the air flow is blocked in the wall thickness direction and the wall width direction, the air flow rate in the restricting passage 53 Can be avoided.

  Since the gap opening 18a is formed on both sides of the parapet main body 16 in the wall thickness direction in the headboard gap 18, the outside air flows through the non-regulating passage 55 formed above and on the side of the flow restricting body 51. As a result, the outside space can be ventilated even if the outside air does not flow through the restriction passage 53. In this case, drying in the headboard gap 18 can be promoted by using a route (non-regulating passage 55) different from the ventilation of the in-wall space 21.

  Since the lower surface portion 51c of the flow restricting body 51 is overlapped with the upper end surface of the parapet main body 16, it is easy to fix the flow restricting body 51 to the parapet main body 16 in a stable state. In addition, since the lower surface portion 51c defines the regulation passage 53, the configuration in which the side surface portion 51a is directly placed on the upper end surface of the parapet main body 16 is different from the configuration in which the upper end surface of the parapet main body 16 is a flat surface. Even if not, it can be avoided that a gap is formed between the side surface 51a and the parapet main body 16.

[Other Embodiments]
The present invention is not limited to the description of the above embodiment, and may be implemented as follows, for example.

  (1) In the above embodiment, the passage opening portions 54 are provided at both ends in the wall width direction of the flow restricting body 51, but the passage opening portions 54 may be provided only at one end of the flow restricting body 51. . Even in this case, in the restriction passage 53 of the flow restricting body 51, air flows along the wall width direction by the air flowing through the wall ventilation portion 41.

  (2) In the above embodiment, the flow restricting body 51 has a box shape, but the flow restricting body 51 may have any shape as long as it is a passage forming body that forms the restricting passage 53. For example, the flow restricting body 51 does not have the lower surface portion 51c and has a U-shaped cross section that is open downward. Even in this configuration, the flow restricting body 51 is attached to the upper end surface of the parapet main body 16 so as to cover the wall ventilation portion 41 from above, so that the restriction passage 53 is provided between the flow restricting body 51 and the upper end surface of the parapet main body 16. It is formed.

  Further, in the configuration in which the gap opening portion 18a is provided only on one side in the wall thickness direction in the headboard gap 18, even if the side surface portion 51a is not provided in the flow restricting body 51 on the side where the gap opening portion 18a is not provided. Good. Even in this case, the side surface portion 51a and the upper surface portion 51b provided on the side where the clearance opening portion 18a is provided allow the air flow between the wall ventilation portion 41 and the clearance opening portion 18a to flow in the wall thickness direction and the wall height direction. It will play a role as a blocking part for blocking.

  Further, the side surface 51 a of the flow restricting body 51 may be provided in a state of being spanned between the parapet main body 16 and the headboard 17. In this case, even if the flow restricting body 51 does not have the upper surface portion 51b, the side surface portion 51a allows the air flow between the wall ventilation portion 41 and the gap opening portion 18a to be in the wall thickness direction and the wall height direction. It will play a role as a blocking part for blocking. In this case, it is preferable that the side surface portion 51a is in contact with the upper end surface of the parapet main body 16 and the upper surface portion 17a of the headboard 17 in a state where ventilation can be blocked. The body 51 may be attached to the headboard 17.

  (3) In the above-described embodiment, the flow restricting body 51 is disposed between the upper end surface of the parapet main body 16 and the upper surface portion 17a of the headboard 17, but the flow restricting body 51 is arranged on the side surface of the parapet main body 16 and the headboard 17. It may be arranged between the side portions 17b and 17c. For example, the flow restricting body 51 is disposed between the inner exterior member 24 of the parapet main body 16 and the inner side surface portion 17 c of the headboard 17, and the wall ventilation portion 41 penetrates the inner exterior member 24 as a through hole. Even in this configuration, since air flows along the wall width direction in the restriction passage 53 in the cap gap 18, it is possible to prevent water from entering the wall ventilation portion 41 from the outside through the cap gap 18.

  (4) In the above-described embodiment, the flow restricting body 51 has the ribs 65 and 66. However, in the flow restricting body 51, the restricting portion that restricts the entry of water while allowing the air flow is provided in the restricting passage. 53 may be provided. For example, the porous body which has many micropores extended along a wall width direction is set as the structure provided in the control channel | path 53 as a control part. In this configuration, the porous body is provided between the wall ventilation portion 41 and the passage opening portion 54 in a state where the restriction passage 53 is closed. In this case, even if water flows into the restriction passage 53 together with the air, the air flows toward the wall vent portion 41 through the micropores of the porous body, while the water is caught by the micropores of the porous body and passes through the wall. The part 41 is difficult to reach.

  (5) In the above embodiment, the flow restricting body 51 is formed by folding an integrally molded member, but the flow restricting body 51 may be formed by combining a plurality of members. For example, as shown in FIG. 7, the flow regulating body 51 is formed by combining a first member 71 having an upper surface portion 51 b and a second member 72 having a lower surface portion 51 c of the flow regulating body 51. . In this configuration, the first member 71 includes a pair of side surface portions 51a and an upper rib 65 in addition to the upper surface portion 51b, and the second member 72 includes a pair of end surface portions 51d in addition to the lower surface portion 51c. And a lower rib 66, an insertion portion 61, and a hole edge portion 67. The second member 72 has a fitting portion 73 extending upward from the lower surface portion 51 c, and the fitting portion 73 is fitted inside the pair of side surface portions 51 a of the first member 71. Thus, the first member 71 and the second member 72 are assembled to each other.

  (6) In the above embodiment, the restriction passage 53 is formed by the flow restricting body 51, but the restriction passage may be formed by the positional relationship between the wall ventilation portion 41 and the gap opening portion 18a. For example, the gap opening portions 18a are not formed in an elongated shape extending in the wall width direction, but are provided in a plurality at a predetermined interval along the wall width direction, and the wall ventilation portions 41 are provided in the gap opening portion 18a. On the other hand, it is set as the structure arrange | positioned in the position shifted | deviated to the wall width direction. In this case, the wall ventilation portions 41 and the gap opening portions 18a are alternately arranged, and a portion where both the wall ventilation portions 41 and the gap opening portions 18a do not exist in the wall width direction blocks the air flow. It corresponds to a guide passage that guides in the width direction and blocks in the wall thickness direction and the wall height direction.

  (7) In the above embodiment, the headboard holder 31 and the flow restricting body 51 are arranged side by side along the wall width direction. However, the headboard holder 31 and the flow restricting body 51 are arranged side by side in the wall thickness direction. It may be arranged, and may be arranged in piles in the wall height direction. For example, in the wall thickness direction, the flow restricting body 51 is arranged on one side of the center of the parapet 15 and the headboard holder 31 is arranged on the other side.

  (8) The wall portion provided with the regulation passage 53 may be a handrail wall or a waist wall, as long as it has a headboard and a wall main body, and not the parapet 15. Further, the wall portion may be provided not on the roof 12 but on a balcony or a veranda.

  DESCRIPTION OF SYMBOLS 10 ... Building, 15 ... Parapet as wall part, 16 ... Parapet body as wall main body, 17 ... Kasagi, 18 ... Kasaki gap, 18a ... Clearance opening part, 21 ... In-wall space, 41 ... Wall ventilation part, 51 ... Flow restricting body as a passage forming body, 51a... Side surface portion as an intermediate portion constituting the blocking portion, 51b... Upper surface portion as a covering portion constituting the blocking portion, 51c. , A passage opening portion, 55 a non-regulation passage as a non-guide passage, 61 an insertion portion, 62 a hook portion.

Claims (7)

A wall structure of a building with a wall portion standing upwards outdoors,
The wall portion includes a wall main body that forms a wall surface of the wall portion, and a headboard that covers an upper end portion of the wall main body,
Between the wall main body and the headboard, a headboard gap opened toward the direction intersecting the wall width direction of the wall portion is provided,
The wall main body is provided with a wall ventilation portion that communicates the interior space of the wall main body with the space in the wall and the headboard gap so as to allow ventilation.
The cap wall gap is provided with a blocking portion that blocks the flow of air and extends along the wall width direction, so that a gap opening portion that is an opening portion of the cap tree gap and the wall ventilation portion are provided. A guide passage for guiding the air flow in the wall width direction is formed while blocking the air flow in the direction intersecting the wall width direction.
A passage forming body that forms the guide passage by having the blocking portion;
The blocking part divides the headboard gap into the wall ventilation part side and the gap opening part side, so that air along the inner circumferential surface of the headboard in the direction in which the gap opening part and the wall ventilation part are arranged is arranged. Is to block the flow of
In the passage forming body, a space on the wall ventilation portion side partitioned by the blocking portion is used as the guide passage, and a passage opening portion that opens the guide passage in the wall width direction includes: A wall structure of a building, which is provided on both end sides of the blocking portion in the wall width direction. The blocking part is
An intermediate part provided between the gap opening part and the wall ventilation part;
A cover portion extending from the intermediate portion toward the opposite side of the gap opening portion in the direction in which the gap opening portion and the wall ventilation portion are arranged, and covering the wall ventilation portion from the headboard side;
Have
2. The guide passage according to claim 1 , wherein in the passage formation body, a space formed between the cover portion and the wall body on the wall ventilation portion side of the intermediate portion is used as the guide passage. Building wall structure. The gap opening portions are arranged as a pair on both sides of the wall body in the wall thickness direction of the wall portion,
In the gap between the caps, a non-guide passage different from the guide passage is provided,
The non-guide passage allows ventilation between a pair of the gap opening portions through the space between the blocking portion and the headboard of the passage forming body without passing through the guide passage. The building wall structure according to claim 1 , wherein the wall structure is a building wall structure. The passage forming body has an overlapped portion overlapped on the outer peripheral surface of the wall main body,
The building wall structure according to any one of claims 1 to 3 , wherein in the passage forming body, a space defined by the overlapping portion and the blocking portion is used as the guide passage. . The passage forming body is
The building wall structure according to claim 4 , further comprising an insertion portion extending into the wall ventilation portion by extending from the overlapped portion. The passage forming body is
The building according to claim 5 , further comprising a hook portion that extends from the insertion portion along a direction in which the overlapping portion extends and is hooked on an outer peripheral portion of the wall body from the inner space side. Wall structure. Said guide passage is any one of claims 1 to 6, characterized in that it extends along the wall width direction while meandering to at least one wall height direction and the wall thickness direction of the wall portion The wall structure of the building according to item 1.

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