JP5758668B2 - Airtight structure of building - Google Patents

Description

  The present invention relates to an airtight structure of a building.

  In a building such as a house, in order to ensure the heat insulation performance of the outer wall portion, it is common that an in-wall heat insulating material is provided in the wall space between the outer wall surface material and the inner wall surface material arranged opposite to each other. is there. As this type of heat insulating material in the wall, there is one in which a fiber heat insulating material such as glass wool is covered with a moisture-proof covering material. Some of the heat insulating materials in the wall are provided with ears extending outward from the peripheral edge portion of the cover material. In this case, the wall is obtained by attaching the ears to the inner wall surface material using a tucker or the like. The inner heat insulating material can be assembled.

  In addition, in buildings, airtight performance is required in addition to heat insulation performance. For example, in the outer wall part of a building, it is assumed that outside air enters and exits indoors through a gap between an inner wall surface material and a floor surface material. Therefore, as a countermeasure, for example, Patent Document 1 discloses a configuration in which an airtight tape is attached and sealed along the boundary between the inner wall surface material and the floor surface material. According to this, since outside air can be prevented from entering and exiting indoors through the gap between the inner wall surface material and the floor surface material, airtightness can be ensured.

JP 2001-49754 A

  However, in the technique of Patent Document 1, it is necessary to stick an elongated airtight tape so as to straddle each face material along the boundary between the inner wall surface material and the floor surface material. Carefulness is required. For this reason, it is assumed that a large amount of time is required for the work of attaching the airtight tape, and there is a concern that the number of work steps will increase.

  This invention is made | formed in view of the said situation, and makes it a main objective to provide the airtight structure of the building which can aim at reduction of the work man-hour at the time of manufacture.

  In order to solve the above problems, the airtight structure of the building of the first invention is such that a cover material is covered with a fiber material formed in a plate shape on the back side of an inner wall surface material installed on a floor base material. The inner heat insulating material is applied to a building provided along the back surface of the inner wall surface material, and a part of the cover material has an ear portion extending outward from the peripheral edge portion of the fiber-based material. The lower ear portion extending from the lower side of the fiber material in the ear portion is on the surface side of the inner wall surface material between the lower end portion of the inner wall surface material and the floor base surface material. It extends, and a part thereof is sandwiched between the floor base material and the floor finishing surface material laid thereon.

  According to the present invention, the lower ear portion of the cover material of the wall heat insulating material provided on the back surface of the inner wall surface material is on the surface side of the inner wall surface material between the lower end portion of the inner wall surface material and the floor base surface material. A part is pulled out, and the part that is pulled out is sandwiched between the floor base material and the floor finish surface material. In this case, since the gap between the inner wall surface material and the floor finish surface material is covered from below by the lower ear portion, air can be prevented from entering and exiting between the inner wall surface material and the floor finishing surface material. Airtightness can be ensured. In such a configuration, first, the inner wall surface material is installed on the floor base material with the lower ear portion pulled out to the surface side of the inner wall material, and then the floor finish surface material is installed on the floor base material. By performing a simple operation, the lower ear part can be sandwiched between the double-sided materials. For this reason, it is possible to reduce the number of work steps during manufacturing.

  By the way, even if the lower ear portion is sandwiched between the lower end portion of the inner wall surface material and the floor base surface material, it is possible to suppress the entry and exit of air through both of them, and as a result, the inner wall material and the floor finish surface material A certain degree of airtight performance can be secured. However, in such a configuration, the width of the sandwiched portion in which the lower ear portion is sandwiched (specifically, the length in the wall thickness direction of the inner wall material) can be secured only for the wall thickness of the inner wall surface material, and a sufficient airtight effect cannot be obtained. There is a fear. In this respect, in the above-described configuration in which the lower ear portion is sandwiched between the floor base surface material and the floor finish surface material, the sandwiched portion of the lower ear portion can be secured widely, so that a sufficient airtight effect can be obtained.

  The airtight structure of a building according to a second invention is the building according to the first invention, wherein a plurality of the inner wall surface materials are installed side by side, and the inner heat insulating material is disposed for each inner wall surface material. The lower ear portion is configured such that a portion of the inner wall surface material in the width direction is set larger than the width dimension of the inner wall surface material, so that a part thereof is lateral to the inner wall surface material. In the adjacent inner wall surface material, the extension portion of the lower ear portion of the heat insulating material in the wall provided on the back surface of the one inner wall surface material is the other inner wall surface. It is overlapped with the lower ear portion of the heat insulating material in the wall provided on the back surface of the material, and is sandwiched between the floor foundation surface material and the floor finish surface material in the overlapped state. .

  According to the present invention, the lower ear portions of the in-wall heat insulating materials provided on the back surfaces of the adjacent inner wall surface materials are provided in a partially overlapped state. The ears are sandwiched between the floor base material and the floor finish surface material. In this case, since a continuous airtight line can be formed along the direction in which the inner wall surface materials are arranged, the airtightness can be improved.

  In the airtight structure of the building of the third invention, in the first or second invention, the upper ear portion extending from the upper side of the fiber-based material in the ear portion is the upper end portion of the inner wall surface material and the upper portion thereof Extending to the surface side of the inner wall surface material between the ceiling base surface material provided in the ceiling, and a part of the ceiling base surface material and the surrounding edge and the ceiling finishing surface material provided therebelow It is characterized by being sandwiched between at least one of them.

  According to the present invention, the upper ear portion of the wall heat insulating material provided on the back surface side of the inner wall surface material is drawn out to the surface side of the inner wall surface material through the space between the upper end portion of the inner wall surface material and the ceiling base surface material. The drawn portion is sandwiched between the ceiling base material and at least one of the surrounding edge and the ceiling finishing material provided below the ceiling base material. In this case, since the gap between the upper end portion of the inner wall surface material and the ceiling base surface material can be covered by the upper ear portion, it is possible to suppress air from entering and exiting between the inner wall surface material and the ceiling base surface material. . As a result, the entry and exit of air can be suppressed at the upper and lower end portions of the inner wall surface material, and the airtightness can be improved.

  By the way, it is conceivable that a sheet material such as cloth is used as the ceiling finish surface material. In this case, if the upper ear portion is sandwiched between the ceiling finishing surface material and the ceiling base surface material, unevenness may occur in the ceiling finishing surface material and the aesthetics on the ceiling side may be impaired. In view of this point, it can be said that it is desirable to have a configuration in which the upper ear portion is sandwiched between the peripheral edge and the ceiling base material.

  The airtight structure of a building according to a fourth aspect of the present invention is the airtight structure according to the third aspect, wherein a surrounding edge is provided along a boundary portion between the inner wall surface material and a ceiling base surface material provided above the inner wall surface material. The ear portion extends to the surface side of the inner wall surface material through the space between the upper end portion of the inner wall surface material and the ceiling foundation surface material, and the ceiling foundation surface material and the above-mentioned end portion are not exposed to the indoor space side. It is characterized by being sandwiched between surrounding edges.

  According to the present invention, ingress and egress of air between the upper end portion of the inner wall surface material and the ceiling base surface material can be suppressed as in the third invention. And since the end part of the lower ear part is sandwiched between the surrounding edge and the ceiling base material without being exposed to the indoor space side, the above effect can be obtained without impairing the aesthetics of the indoor space. it can.

  The airtight structure of a building according to a fifth aspect of the present invention is the airtight structure according to any one of the first to fourth aspects, wherein the inner wall surface material, the inner wall heat insulating material, and the inner wall surface heat insulating material on the back surface side of the inner wall surface material. An inner wall panel having an inner wall frame provided around, the inner wall panel being applied to a building in which a plurality of the inner wall panels are installed side by side, wherein the inner wall frame is along a side edge of the inner wall surface material. A side ear portion extending laterally from the fiber-based material is sandwiched between the vertical frame member and the inner wall surface member at the ear portion of the in-wall heat insulating material. In the adjacent inner wall panels, the vertical frame member of one inner wall panel has a facing portion that protrudes toward the other inner wall panel and faces the inner wall surface material of the panel, and the inner walls facing each other. Between the wall material and the facing part, At least one of an end edge portion of the side ear portion sandwiched between the vertical frame member and the inner wall surface material in one inner wall panel and a side ear portion of the heat insulating material in the wall in the other inner wall panel. It is characterized by being sandwiched.

  According to the present invention, in each adjacent inner wall panel, the opposing portion of the vertical frame member provided on the back surface of the inner wall surface material in one inner wall panel is provided facing the back surface of the inner wall material in the other inner wall panel. It has been. In this case, the said vertical frame material is arrange | positioned ranging over the back surface of the inner wall surface material of each inner wall panel. Here, in one inner wall panel, since the side ear portion of the heat insulating material in the wall is sandwiched between the vertical frame material and the inner wall surface material, air flowing between the vertical frame material and the inner wall surface material Access is suppressed. On the other hand, between the facing portion of the vertical frame member and the inner wall surface material of the other inner wall panel, the end of the side ear portion sandwiched between the vertical frame member and the inner wall surface material in one inner wall panel. Part (specifically, the portion protruding laterally from the inner wall surface material in the side ear portion) and the side ear portion of the wall heat insulating material in the other inner wall panel are sandwiched. Ingress and egress of air through the frame material and the inner wall surface material (the inner wall surface material of the other inner wall panel) is suppressed. As described above, air can be prevented from entering and exiting between adjacent inner wall panels (inner wall surface materials), and as a result, airtightness can be improved.

  In the airtight structure of a building according to a sixth aspect of the present invention, in the fifth aspect, the side ear portion sandwiched between the vertical frame member and the inner wall surface member in the one inner wall panel is located on the side of the inner wall surface material. Is partially sandwiched between the facing portion and the inner wall surface material of the other inner wall panel in a state where the protruding portion is overlapped with the side ear portion of the other inner wall panel. It is characterized by being.

  According to the present invention, in a state where the side ear portion of the heat insulating material in the wall of one inner wall panel is sandwiched between the vertical frame material and the inner wall surface material, a part thereof protrudes to the side of the inner wall surface material. ing. Then, the protruding portion is overlapped with the side ear portion of the heat insulating material in the wall of the other inner wall panel, and sandwiched between the facing portion of one inner wall panel and the inner wall surface material of the other inner wall panel in the overlapped state. It is. In this case, the airtightness between the inner wall panels can be further enhanced.

  The airtight structure of a building according to a seventh aspect of the present invention is the airtight structure according to any one of the first to sixth aspects, wherein the inner wall surface material is disposed in a state facing the inner wall heat insulating material and the lower end surface of the inner wall surface material. And the lower ear portion is provided in a state of being sandwiched between the guide member and the lower end surface of the inner wall surface material, whereby the surface side of the inner wall surface material is provided. It is characterized by extending.

  By the way, in the configuration in which the inner wall surface material is integrally provided with the inner wall surface material, when the inner wall surface material is lifted and installed on the floor base surface material, the lower ear portion of the wall heat insulating material hangs downward. If the inner wall surface material is installed on the floor base surface material in the suspended state, the lower ear portion may enter the back surface side of the inner wall surface material. Therefore, in the present invention, the guide member is provided integrally with the inner wall surface material in a state of facing the lower end surface of the inner wall surface material, and the lower ear portion is sandwiched between the guide member and the lower end surface of the inner wall surface material, The lower ear part is drawn out to the surface side of the inner wall surface material. In this case, since the installation work of the inner wall surface material can be performed in a state where the lower ear portion is pulled out to the surface side of the inner wall surface material, it is possible to suppress the occurrence of the above inconvenience.

  The airtight structure of a building according to an eighth aspect of the present invention is characterized in that, in any one of the first to seventh aspects, the covering material having the ear portion is made of a moisture-proof material.

  According to the present invention, since the covering material of the heat insulating material in the wall having the ear portion is formed of the moisture-proof material, in each of the first to seventh inventions, in addition to the airtight effect, the moisture-proofing An effect can be obtained.

  The airtight structure of a building according to a ninth aspect of the present invention is the airtight structure according to any one of the first to eighth aspects, wherein an inner wall frame is provided on the back side of the inner wall surface material so as to surround the inner wall heat insulating material. The ear portion of the cover material of the heat insulating material is sandwiched between the inner wall frame and the inner wall surface material.

  According to the present invention, since the ear portion of the cover material is sandwiched between the inner wall frame and the back surface of the inner wall surface material, air is prevented from entering and exiting between the back surface and the ear portion of the inner wall surface material. As a result, air can be prevented from entering and exiting between the end face of the inner wall surface material and the ear portion. Thereby, an airtight effect can further be heightened.

The longitudinal cross-sectional view which shows the structure of the outer wall periphery of the building in 1st Embodiment. The cross-sectional view which shows the structure of an outer wall structure. The perspective view which shows the arrangement | positioning state of the wooden brick in an outer wall frame. The perspective view which shows the structure of an inner wall panel. (A) is a front view which shows the structure of an in-wall heat insulating material, (b) is a side view which shows the structure. The perspective view which shows the state in which the inner wall panel was installed on the floor base material. The perspective view which shows the state by which the floor finishing material was laid on the floor base material in the structure of FIG. The longitudinal cross-sectional view which shows the structure of the boundary part of an inner wall panel and a ceiling material. Explanatory drawing for demonstrating the work procedure at the time of building an airtight structure. The cross-sectional view which shows the structure of the inner wall panel in 2nd Embodiment. (A) is a front view showing an inner wall frame, (b) is a front view showing an in-wall heat insulating material. The cross-sectional view which shows the state by which the inner wall panel was installed side by side. The perspective view which shows the state by which the inner wall panel was installed on the floor base material. The longitudinal cross-sectional view which shows the structure of the boundary part of an inner wall panel and a ceiling material. The longitudinal cross-sectional view which shows the inner wall panel provided with the guide member in other embodiment. The cross-sectional view which shows the arrangement state of an adjacent inner wall panel. The longitudinal cross-sectional view which shows the structure of the outer wall periphery of a building. The perspective view which shows a heat insulating material unit. The front view which shows the fixed state of the heat insulating material unit with respect to an outer wall frame. The perspective view which shows the engaging member provided in the heat insulating material unit. The cross-sectional view which shows the state by which the heat insulating material unit was positioned by the engaging member. The perspective view which shows the state by which the to-be-engaged part was provided in the groove part between adjacent vertical frame materials. An adjacent vertical frame material and a heat insulating material unit are shown, (a) is a perspective view which shows the state which separated the heat insulating material unit from the vertical frame material, (b) shows the state which fixed the heat insulating material unit to the vertical frame material. Perspective view. The longitudinal cross-sectional view which shows another form of an engaging member.

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a unit type building is embodied as a building, and the unit type building is configured by connecting a plurality of building units composed of beams and columns to each other. 1 is a longitudinal sectional view showing a configuration around the outer wall of the building, and FIG. 2 is a transverse sectional view showing a configuration of the outer wall structure. FIG. 2 is a cross-sectional view taken along line AA in FIG.

  As shown in FIG. 1, in the outer wall structure of the building 10, an outer wall panel 11 is provided on the outdoor side, and an inner wall panel 12 is provided on the indoor side. The outer wall panel 11 includes an outer wall member 14 that forms an outdoor surface, and an outer wall frame 15 that is fixed to the back surface side (indoor surface side) of the outer wall member 14. The outer wall material 14 is formed of an exterior material such as ceramic siding.

  The outer wall frame 15 is configured by connecting a plurality of frame members 15a to 15c made of channel steel having a U-shaped cross section in a rectangular frame shape. Specifically, the outer wall frame 15 extends in the vertical direction at both ends in the width direction of the outer wall material 14 and in the left-right direction (the width direction of the outer wall material 14) at both ends in the vertical direction of the outer wall material 14. A horizontal frame member 15b and an intermediate frame member 15c extending in the left-right direction at the intermediate portion in the vertical direction of the outer wall member 14 are provided. In detail, among the frame members 15a to 15c, the vertical frame member 15a is partially removed at both ends in the vertical direction so as to avoid interference with the ceiling beam 18 and the floor beam 17.

  Each horizontal frame member 15b of the outer wall frame 15 is fixed to the floor girder 17 and ceiling girder 18 with bolts or the like. Thereby, the outer wall panel 11 is fixed to the building 10. As shown in FIG. 2, a plurality of outer wall panels 11 are installed side by side on the outer periphery of the building 10, and the outer wall frames 15 (specifically, vertical frame members 15 a) of the adjacent outer wall panels 11 are in contact with each other. Are connected by bolts or the like.

  A plurality of wooden bricks 19 are fixed to the indoor side surface of the outer wall frame 15 of the outer wall panel 11 by tapping screws or the like. The wooden brick 19 is an outer wall base material made of substantially rectangular parallelepiped wood. In FIG. 3, the arrangement | positioning state of the wooden brick 19 in the outer wall frame 15 is shown. As shown in FIG. 3, a plurality of wooden bricks 19 are provided at predetermined intervals along the longitudinal direction of the vertical frame members 15 a (four in FIG. 3) across the adjacent vertical frame members 15 a of the adjacent outer wall frames 15. ) Is arranged.

  Next, the structure of the inner wall panel 12 is demonstrated based on FIG. FIG. 4 is a perspective view showing the configuration of the inner wall panel 12.

  As shown in FIG. 4, the inner wall panel 12 is incorporated into an inner wall member 21 that forms an indoor surface, an inner wall frame 22 that is fixed to the back side (outdoor surface side) of the inner wall member 21, and the inner wall frame 22. And the frame heat insulating material 24 fixed to the outdoor side surface of the inner wall frame 22. The inner wall panel 12 is formed with substantially the same size (vertical and horizontal dimensions) as the outer wall panel 11.

  The inner wall material 21 is formed of, for example, a gypsum board. The inner wall frame 22 is configured by connecting a plurality of frame members 22a to 22c made of wooden square members in a rectangular frame shape. Specifically, the inner wall frame 22 includes a vertical frame member 22a extending in the vertical direction (height direction) at both ends in the width direction of the inner wall member 21, and a horizontal frame member extending in the horizontal direction at both ends in the vertical direction of the inner wall member 21. 22b and an intermediate frame member 22c extending in the vertical direction at the intermediate portion in the width direction of the inner wall member 21. Accordingly, the inner wall frame 22 is formed with two in-frame regions S surrounded by the respective frame members 22a to 22c.

  The heat insulating material 23 in the wall is formed by filling a fiber heat insulating material 27 such as glass wool in a bag body 26 in which a polyethylene film or the like having moisture resistance is formed in a bag shape. FIG. 5 shows the configuration of the in-wall heat insulating material 23, (a) is a front view showing the same configuration, and (b) is a side view.

  As shown in FIG. 5, the in-wall heat insulating material 23 has two fiber heat insulating materials 27. The fiber-based heat insulating material 27 is formed in a rectangular plate shape having a predetermined thickness, and has substantially the same size (vertical and horizontal dimensions) as the frame area S of the inner wall frame 22. The fiber-based heat insulating materials 27 are provided side by side in the lateral direction and are arranged at the same interval as the two frame regions S of the inner wall frame 22.

  The bag body 26 is provided across one plate surface of each fiber-based heat insulating material 27 and covers the other plate surface of each fiber-based heat insulating material 27 while covering a film material 26a covering each plate surface. And a film material 26b continuously covering the four side surfaces therebetween, and the film materials 26a and 26b are formed by welding or bonding. The film material 26a has a rectangular shape, and its vertical height is larger than the vertical height of the fiber heat insulating material 27, and its width is the width of the fiber heat insulating material 27 (specifically, two fiber heat insulating materials). It is larger than the sum of the width dimensions of the material 27. In this case, the film material 26a extends in the state where it is provided on one plate surface of each fiber-based heat insulating material 27, and more specifically, the edge side of its four sides extends outward from the fiber-based heat insulating material 27, respectively. The extended portion serves as an ear portion 28 of the bag body 26.

  On the other hand, a number of ventilation holes (not shown) for releasing the moisture of the heat insulating material 27 to the outside of the bag body 26 are provided in a portion of the film material 26b covering the other plate surface of the fiber heat insulating material 27. As will be described later, in the wall heat insulating material 23, the film material 26 a of the bag body 26 is on the indoor side and the film material 26 b is on the outdoor side in the wall (specifically, in the wall between the inner wall material 21 and the outer wall material 14). It is provided in the state of facing. In this case, moisture inside the bag body 26 can be prevented from entering the bag body 26 by the film material 26a, and moisture that has entered the bag body 26 can be released outside the bag body 26 through the film material 26b.

  Returning to the description of FIG. 4, the in-wall heat insulating material 23 includes two fiber-based heat insulating materials 27 disposed in each frame region S of the inner wall frame 22, and an ear portion of the bag body 26 (film material 26 a). 28 (more specifically, a portion between the fiber-based heat insulating materials 27 in the film material 26 a) is incorporated in a state of being sandwiched between the inner wall frame 22 and the back surface of the inner wall material 21. In this case, each fiber-based heat insulating material 27 (specifically, the bag body 26 on the outer surface thereof) is provided with no gap between the inner surface of each frame material 22a to 22c, and the film of the bag body 26 is provided. The material 26 a is in contact with the back surface of the inner wall material 21.

  The frame heat insulating material 24 is made of a resin heat insulating material such as polystyrene foam, and has a bar shape (square bar shape) having a rectangular cross section. The frame heat insulating material 24 is a tapping screw or the like in a direction extending along each frame material 22a to 22c on the surface opposite to the fixed surface of the inner wall material 21 in each vertical frame material 22a and intermediate frame material 22c of the inner wall frame 22. It is fixed by. A plurality of (3 in FIG. 4) frame heat insulating materials 24 are provided at predetermined intervals in the extending direction of each frame material 22a to 22c in each frame material 22a to 22c, and each frame material 22a to 22c is provided. In this case, a wooden brick 19 is arranged between the frame heat insulating materials 24 as described later.

  The frame heat insulating material 24 suppresses the frame 22 from becoming a thermal bridge by being provided at a location where the inner wall frame 22 cannot be installed. From this point, it can be said that the in-wall heat insulating material 23 is a main heat insulating portion and the frame heat insulating material 24 is a sub heat insulating portion. The frame heat insulating material 24 may be formed of other resin-based heat insulating materials such as rigid urethane foam and phenol foam instead of polystyrene foam.

  Returning to the description of FIG. 1 and FIG. 2, the inner wall frame 22 is fixed to the indoor side surface of each wooden brick 19 with a tapping screw or the like in a state where the inner wall panel 12 is installed indoors with respect to the outer wall panel 11. Specifically, as shown in FIG. 2, the vertical frame members 22 a and the intermediate frame members 22 c of the inner wall frame 22 are respectively fixed to the wooden bricks 19. In this case, the heat insulating material 23 in the wall of the inner wall panel 12 is disposed in the wall space between the outer wall material 14 and the inner wall material 21, thereby ensuring the heat insulating performance of the outer wall structure. Further, in the installed state of the inner wall panel 12, the frame heat insulating materials 24 are arranged alternately with the wooden bricks 19 in the vertical direction and are arranged in contact with or close to the wooden bricks 19.

  As another configuration of the building 10, a floor joist 31 is provided on the upper surface of the floor beam 17. A floor base material 32 made of particle board is provided on the floor joist 31, and a floor finishing material 33 made of flooring is provided on the floor base material 32. A baseboard 34 is provided at a lower end portion of the inner wall panel 12, and a parting between the floor finish 33 and the inner wall panel 12 is performed by the baseboard 34.

  On the other hand, a field edge 36 is fixed to the lower surface of the ceiling beam 18. A ceiling base material 37 made of two sheets of gypsum board is fixed to the lower surface of the field edge 36, and a ceiling finishing material 39 made of cloth is attached to the lower surface of the ceiling base material 37. A peripheral edge 38 is provided at the upper end portion of the inner wall panel 12, and the peripheral edge 38 cuts off the ceiling finishing material 39 and the inner wall panel 12.

  By the way, in this embodiment, it has the characteristic airtight structure in order to suppress that external air enters / exits through between the lower end part of the inner wall panel 12, and the floor base material 32. FIG. Such an airtight structure will be described below with reference to FIGS. 6 and 7 in addition to FIGS.

  As shown in FIGS. 4 and 5, the film material 26 a of the bag body 26 of the in-wall heat insulating material 23 has substantially the same width as the lateral width of the inner wall material 21, but its vertical height is the inner wall. It is larger than the vertical height of the material 21. Specifically, in the ear portion 28 of the film material 26 a, the side ear portion 28 c extending laterally from the fiber-based heat insulating material 27 has an extension length (horizontal width) L3 of the vertical frame material 22 a of the inner wall frame 22. While it is substantially the same as the width dimension, the lower ear portion 28a extending downward from the fiber-based heat insulating material 27 and the upper ear portion 28b extending upward from the fiber-based heat insulating material 27 are: The extended lengths (vertical heights) L1 and L2 are larger than the width of the horizontal frame member 22b of the inner wall frame 22. More specifically, the extension length L1 of the lower ear portion 28a is longer than the extension length L2 of the upper ear portion 25a.

  As described above, the in-wall heat insulating material 23 is incorporated in the frame 22 in a state where the ear portion 28 of the bag body 26 is sandwiched between the inner wall frame 22 and the inner wall material 21. In this case, the side ear portion 28c is sandwiched between the vertical frame member 22a and the inner wall member 21 without protruding laterally from the frame member 22a (in other words, the inner wall member 21), whereas the lower ear portion 28a. Is sandwiched between the lower horizontal frame member 22b and the inner wall member 21 in a state of partially protruding downward from the frame member 22b, and the upper ear portion 28b is connected to the upper horizontal frame member 22b and the inner wall member 21. Is sandwiched in a state of partially protruding from the frame material 22b.

  Next, the configuration of the boundary between the inner wall panel 12 and the floor will be described with reference to FIGS. 6 is a perspective view showing a state in which the inner wall panel 12 is installed on the floor base material 32. FIG. 7 shows a state in which the floor finishing material 33 is laid on the floor base material 32 in the configuration of FIG. It is a perspective view shown. In addition, the code | symbol 41 in FIG.6 and FIG.7 is a foundation which supports this building 10 from the downward | lower direction, and the floor girder 17 is installed in the upper end.

  As shown in FIG. 6, the floor base material 32 is installed on the floor joist 31 provided on the floor beam 17 and on the floor joist 46 provided on the floor beam 42. An underfloor heat insulating material 43 made of glass wool is disposed between the floor joists 31 and 46 on the lower surface side of the floor base material 32 so as to insulate the underfloor.

  A plurality of inner wall panels 12 are installed side by side on the floor base material 32, and an inner wall portion is constituted by each of the inner wall panels 12. In a state where the inner wall panel 12 is installed on the floor base material 32, the lower wall portion 28 a of the bag body 26 of the in-wall heat insulating material 23 passes through between the lower end portion of the inner wall material 21 and the upper surface of the floor base material 32. 21 is partly drawn to the surface side (indoor surface side) of 21, that is, the indoor space X side.

  As shown in FIG. 7, a floor finishing material 33 is laid on the floor base material 32. In this case, a part of the lower ear portion 28a, that is, a portion drawn to the surface side of the inner wall material 21 in the lower ear portion 28a is sandwiched between the floor base material 32 and the floor finishing material 33, and the floor finishing material A gap 49 between 33 and the inner wall material 21 is closed from below by the lower ear portion 28a. Thereby, air can be prevented from entering and exiting through the gap 49, and as a result, airtightness can be ensured. A baseboard 34 is provided at the lower end of the inner wall panel 12 so as to close the gap 49 from above.

  A ventilation layer 45 extending vertically is formed between the in-wall heat insulating material 23 of the inner wall panel 12 and the outer wall material 14 of the outer wall panel 11, and the lower end portion of the outer wall material 14 is formed in the ventilation layer 45. The outside air enters and exits through the floor girder 17. 7 and 8, the horizontal frame member 15b of the outer wall frame 15 is disposed between the lower end portion of the outer wall member 14 and the floor beam 17. However, the frame member 15b has a plurality of ventilation holes (not shown). The outside air enters and exits through the vent hole.

  Next, the configuration of the boundary between the inner wall panel 12 and the ceiling will be described with reference to FIG. FIG. 8 is a longitudinal sectional view showing a configuration of a boundary portion between the inner wall panel 12 and the ceiling members 37 and 39.

  As shown in FIG. 8, a predetermined gap 51 is formed between the upper end portion of the inner wall material 21 of the inner wall panel 12 and the ceiling base material 37, and the bag body 26 of the in-wall heat insulating material 23 is formed through the gap 51. The upper ear portion 28b is partially drawn out to the surface side (indoor surface side) of the inner wall material 21. The drawn portion of the bag body 26 is sandwiched between the ceiling base material 37 and the peripheral edge 38. In other words, the peripheral edge 38 is fixed to the indoor surface of the inner wall member 21 by bonding or the like with the extracted portion sandwiched between the upper end portion and the ceiling base material 37. Thereby, since the clearance 51 between the ceiling base material 37 and the surrounding edge 38 is covered by the upper ear portion 28 b, it is possible to prevent air from entering and exiting through the clearance 51.

  Further, the upper ear portion 28 b is sandwiched with its end edge disposed between the ceiling base material 37 and the surrounding edge 38. That is, the upper ear portion 28b is sandwiched between the both sides 37 and 38 in a state where it is not exposed to the indoor space X side. The airtightness between the base material 37 and the surrounding edge 38 can be secured.

  Next, an operation procedure for constructing the above airtight structure using the bag body 26 (ear portion 28) of the in-wall heat insulating material 23 will be described with reference to FIG. FIG. 9 is an explanatory diagram for explaining the work procedure.

  When constructing the outer wall structure of the building 10, the outer wall panel 11 is first assembled to the building 10, and then each wooden brick 19 is fixed to the outer wall frame 15 of the outer wall panel 11.

  Next, as shown to Fig.9 (a), the inner wall panel 12 is assembled | attached with respect to the wooden brick 19 from the indoor side. Specifically, the inner wall frame 22 is fixed to the indoor side surface of the wooden brick 19. This operation is performed in a state where the lower ear portion 28a and the upper ear portion 28b of the bag body 26 of the in-wall heat insulating material 23 are pulled out to the surface side of the inner wall material 21, respectively. Accordingly, when the inner wall panel 12 is assembled, a part of the lower ear portion 28a passes between the lower end portion of the inner wall material 21 and the floor base material 32 as shown in FIG. And a part of the upper ear portion 28 b is pulled out to the indoor side of the inner wall material 21 through the gap 51 between the upper end portion of the inner wall material 21 and the ceiling base material 37.

  Then, each inner wall panel 12 is installed in said procedure. After each inner wall panel 12 is installed, a floor finishing material 33 is laid on the floor base material 32 as shown in FIG. Accordingly, the lower ear portion 28 a of the bag body 26 of each inner wall panel 12 is sandwiched between the floor base material 32 and the floor finish material 33. Thereafter, the baseboard 34 is attached along the lower end of the inner wall panel 12.

  Next, as shown in FIG. 9 (d), a peripheral edge 38 is attached along the boundary portion between the upper end portion of the inner wall panel 12 and the ceiling base material 37. At this time, the peripheral edge 38 is attached in a state where the upper ear portion 28 b of the bag body 26 is sandwiched between the ceiling base material 37 and the peripheral edge 38. This completes a series of operations.

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

  The lower ear portion 28a extending from the lower side of the fiber-based heat insulating material 27 among the ear portions 28 of the bag body 26 of the inner wall heat insulating material 23 provided on the back surface side of the inner wall material 21 is connected to the lower end portion of the inner wall material 21. It extends to the surface side of the inner wall material 21 through the space between the floor base material 32 and a part thereof is sandwiched between the floor base material 32 and the floor finishing material 33 laid thereon. In this case, since the gap 49 between the inner wall material 21 and the floor finishing material 33 is covered from below by the lower ear portion 28a, air can be prevented from entering and exiting between the inner wall material 21 and the floor finishing material 33, As a result, airtightness can be ensured. In constructing (manufacturing) such an airtight structure, first, the inner wall panel 12 is installed on the floor base material 32 in a state where the lower ear portion 28a is pulled out to the surface side of the inner wall material 21, and then the floor base material 32 By performing a simple operation such as installing the floor finishing material 33 on the lower ear portion 28a, the lower ear portion 28a can be sandwiched between them. For this reason, it is possible to reduce the number of work steps during manufacturing.

  Of the ears 28 of the bag body 26 of the in-wall heat insulating material 23, the inner wall material 21 passes through the upper ear portion 28 b extending from the upper side of the fiber-based heat insulating material 27 between the upper end portion of the inner wall material 21 and the ceiling base material 37. A part of the surface is sandwiched between the ceiling base material 37 and the surrounding edge 38 provided below the ceiling base material 37. In this case, since the gap 51 between the upper end portion of the inner wall material 21 and the ceiling base material 37 can be covered by the upper ear portion 28 b, it is possible to suppress the entry and exit of air through the gap 51. As a result, the entry and exit of air can be suppressed at each of the upper and lower end portions of the inner wall material 21, and the airtightness can be improved.

  By the way, even if the upper ear portion 28b is sandwiched between the ceiling base material 37 and the ceiling finishing material 39 made of a cloth provided on the lower surface of the ceiling base material 37, the above-mentioned effect can be obtained. There is a risk that the aesthetics of the ceiling will be damaged due to unevenness. In this respect, the above-described configuration in which the upper ear portion 28b is sandwiched between the peripheral edge 38 and the ceiling base material 37 can improve the airtightness while avoiding such inconvenience.

  An inner wall frame 22 is provided on the back side of the inner wall material 21 so as to surround the inner wall heat insulating material 23, and the ear portion 28 of the bag body 26 is sandwiched between the inner wall frame 22 and the inner wall material 21. In this case, air can be prevented from entering and exiting between the back surface of the inner wall member 21 and the ear portion 28, and as a result, between the lower end surface of the inner wall member 21 and the lower ear portion 28 a and the upper end surface of the inner wall member 21. Air can be prevented from entering and exiting through the upper ear portion 28b. Thereby, an airtight effect can further be heightened.

  The bag body 26 having the ear portion 28 was formed of a material having moisture resistance. Therefore, in addition to the above-mentioned airtight effect, a moisture-proof effect can be obtained.

[Second Embodiment]
In the present embodiment, airtightness between the adjacent inner wall panels 12 is performed using the ear portions 28 of the bag body 26 of the in-wall heat insulating material 23. Hereinafter, the configuration of the present embodiment will be described based on FIG. 10 with a focus on differences from the first embodiment. FIG. 10 is a cross-sectional view showing the configuration of the inner wall panel in this embodiment. In FIG. 10, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 10, the inner wall panel 55 of this embodiment is the same as the inner wall panel 12 of 1st Embodiment, and the inner wall frame 21 fixed to the inner wall material 21 and the back surface side (indoor surface side) of the inner wall material 21. And an in-wall heat insulating material 58 incorporated in the frame of the inner wall frame 57. Here, in the inner wall panel 55, the inner wall material 21 has the same configuration as that of the first embodiment, while the inner wall frame 57 and the in-wall heat insulating material 58 have a configuration different from that of the first embodiment. Hereinafter, the configuration of the inner wall frame 57 and the inner heat insulating material 58 will be described with reference to FIG. 11A is a front view showing the inner wall frame 57, and FIG. 11B is a front view showing the heat insulating material 58 in the wall. Moreover, in FIG. 11, the inner wall material 21 is shown with the dashed-dotted line for reference.

  As shown in FIG. 11A, the inner wall frame 57 is configured by connecting a plurality of frame members 57a to 57c made of wooden square members to each other. Specifically, the inner wall frame 57 includes a pair of upper and lower horizontal frame members 57a extending in the left-right direction at both ends in the vertical direction of the inner wall member 21 and a vertical direction (height direction) at one end portion in the width direction of the inner wall member 21. A vertical frame member 57b that extends and an intermediate frame member 57c that extends in the vertical direction at the intermediate portion in the width direction of the inner wall member 21 are provided. Therefore, the inner wall frame 57 of this embodiment is basically configured by removing one of the vertical frame members 22a of the inner wall frame 22 of the first embodiment. In this case, in the inner wall frame 57, of the two frame inner regions R1 and R2 surrounded by the frame members 57a to 57c, one frame inner region R1 is surrounded on the four sides by the frame members 57a to 57c. On the other hand, the other in-frame region R2 is surrounded only on three sides by the horizontal frame material 57a and the intermediate frame material 57c, and one of the in-frame regions R2 is open.

  Further, the vertical frame member 57b has a width (specifically, a length in a direction orthogonal to the longitudinal direction of the vertical frame member 57b and along the wall surface of the inner wall member 21) than the width of the vertical frame member 22a of the first embodiment. Is also getting bigger. Specifically, the width of the vertical frame member 57b is twice the width of the vertical frame member 22a. Therefore, although the inner wall frame 57 has the vertical frame member 57b only on one side in the width direction, the width dimension is substantially the same as that of the inner wall frame 22. The size of the inner wall frame 57 (specifically, the vertical and horizontal dimensions) is substantially the same as the size of the inner wall material 21.

  As shown in FIG. 11 (b), the in-wall heat insulating material 58 basically has the same configuration as the in-wall heat insulating material 23 of the first embodiment, and a polyethylene film or the like having moisture resistance is formed in a bag shape. Two fibrous heat insulating materials 27 are filled in the bag body 61 formed in the above. Similar to the bag body 26 of the first embodiment, the bag body 61 is formed by welding or bonding the film materials 61a and 61b, and the peripheral side of the film material 61a extends outward from the fiber-based heat insulating material 27. The ear part 63 is formed. Below, in the ear | edge part 63, each part extended below, the upper direction, and the side rather than the film material 61a is called the lower ear part 63a, the upper ear part 63b, and the side ear parts 63c and 63d.

  The film material 61 a has a vertical height that is greater than the vertical height of the inner wall material 21, and a width that is greater than the width of the inner wall material 21. Of the side ear portions 63c and 63d of the film material 61a, one side ear portion 63c has a longer extension length from the fiber-based heat insulating material 27 than the other side ear portion 63d. Specifically, the extension length L4 of one side ear 63c is substantially the same as the width of the vertical frame member 57b, whereas the extension length L5 of the other side ear 63d is the vertical frame member 57b. It is half of the width.

  As shown in FIG. 10, the inner wall frame 57 is fixed on the back surface of the inner wall material 21 in a state of being laterally displaced with respect to the inner wall material 21. In this case, at one end side in the width direction of the inner wall panel 55, the vertical frame member 57b of the inner wall frame 57 protrudes partially from the inner wall member 21 (specifically, the side end), and more specifically, the vertical frame member 57b. Half of the width direction is protruding. In the following description, the protruding portion is referred to as a frame protruding portion 64 and, in some cases, simply referred to as the protruding portion 64.

  On the other hand, at the other end in the width direction of the inner wall panel 55, a part of the inner wall material 21 protrudes to the side of the inner wall frame 57 (specifically, the end of the horizontal frame material 57a), and more specifically, the width of the vertical frame material 57b. Half of the length of In the following description, the protruding portion is referred to as a wall protruding portion 65 and, in some cases, simply referred to as a protruding portion 65.

  In the heat insulating material 58 in the wall, each fiber heat insulating material 27 is disposed in each of the frame inner regions R1 and R2 of the inner wall frame 57, and the film material 61a of the bag body 61 is the back surface of the inner wall frame 57 and the inner wall material 21. It is built in a state of being sandwiched between. In this case, one side ear portion 63 c of the bag body 61 is sandwiched between the vertical frame member 57 b and the inner wall member 21, and a part thereof protrudes to the side of the inner wall member 21. Hereinafter, the protruding portion is referred to as a protruding portion 66. The other side ear portion 63 c is provided along the back surface of the protruding portion 65 of the inner wall material 21.

  The lower ear portion 63a is sandwiched between the lower horizontal frame member 57a and the inner wall member 21, and a part thereof protrudes downward from the frame member 57a. Further, the upper ear portion 63b is sandwiched between the upper lateral frame material 57a and the inner wall material 21, and a part thereof protrudes upward from the frame material 57a.

  Next, the installation configuration of the inner wall panel 55 will be described with reference to FIG. FIG. 12 is a cross-sectional view showing a state in which the inner wall panel 55 is installed side by side.

  As shown in FIG. 12, a plurality of inner wall panels 55 are provided side by side on the floor base material 32. In this case, in each adjacent inner wall panel 55, the protruding portion 64 of the inner wall frame 57 of one inner wall panel 55 is provided to face the protruding portion 65 of the inner wall member 21 of the other inner wall panel 55. And between these each protrusion parts 64 and 65, the side ear | edge part 63c (specifically the protrusion part 66) of the bag body 61 in the in-wall heat insulating material 58 of one inner wall panel 55 and the other inner wall panel 55 are provided. The side ear portions 63d of the bag body 61 in the in-wall heat insulating material 58 are provided so as to overlap each other, and the side ear portions 63c and 63d are sandwiched between the protruding portions 64 and 65 in the overlapped state. . Thus, air is prevented from entering and exiting between the adjacent inner wall panels 55. The protruding portions 64 and 65 of the adjacent inner wall panels 55 are fixed to each other with screws or the like with the side ear portions 63c and 63d sandwiched between them.

  Next, the configuration of the boundary between the inner wall panel 55 and the floor will be described with reference to FIG. FIG. 13 is a perspective view showing a state in which the inner wall panel 55 is installed on the floor base material 32.

  As shown in FIG. 13, a plurality of inner wall panels 55 are installed side by side on the floor base material 32. In this installed state, the lower ear portion 63a of the bag body 61 of the in-wall heat insulating material 58 is partially pulled out to the surface side (indoor surface side) of the inner wall material 21 through between the lower end portion of the inner wall material 21 and the floor base material 32. It is. Here, as described above, in the bag body 61 of the present embodiment, a part of the side ear portion 63c (specifically, the protruding portion 66) protrudes to the side of the inner wall material 21, so that the lower ear portion 63a also has one. The part protrudes to the side of the inner wall material 21. In other words, a portion of the lower ear portion 63 a that overlaps the protruding portion 66 protrudes to the side of the inner wall material 21, and the protruding (extending) portion is an extending portion 68. Accordingly, a portion of the lower ear portion 63 a that is pulled out to the indoor side of the inner wall member 21 (a portion corresponding to the extending portion 68) extends to the side of the inner wall member 21.

  In this case, in each adjacent inner wall panel 55, the extending portion 68 of the lower ear portion 63 a of the bag body 61 in the in-wall heat insulating material 58 of one inner wall panel 55 is in the in-wall heat insulating material 58 of the other inner wall panel 55. The bag body 61 is provided so as to overlap with the lower ear portion 63 a of the bag body 61, whereby the lower ear portion 63 a is continuously arranged along the width direction of the inner wall panel 55. And although illustration is abbreviate | omitted, the lower ear part 63a is inserted | pinched between both these 32 and 33 by laying the floor finishing material 33 on the floor base material 32 like 1st Embodiment, thereby. Air is prevented from entering and exiting between the floor finishing material 33 and the inner wall material 21.

  Next, the configuration of the boundary between the inner wall panel 55 and the ceiling will be described with reference to FIG. FIG. 14 is a longitudinal sectional view showing a configuration of a boundary portion between the inner wall panel 55 and the ceiling members 37 and 39. Moreover, the surrounding edge 38 is not provided in the building 10 of this embodiment.

  As shown in FIG. 14, a part of the upper ear portion 63 b of the bag body 61 of the in-wall heat insulating material 58 passes between the upper end portion of the inner wall material 21 and the ceiling base material 37, and a part of the upper ear 63 b The pulled-out portion is sandwiched between the ceiling base material 37 and the ceiling finishing material 39. In this case, since the space between the inner wall material 21 and the ceiling finishing material 39 is blocked by the upper ear portion 63 b, the space between the upper wall portion 21 and the ceiling base material 37 is extended between both the upper and lower wall portions 21 and 39. The outside air can be prevented from entering and exiting through.

  Next, an operation procedure when installing the above-described inner wall panel 55 will be described with reference to FIG. In addition, description is abbreviate | omitted here about the content which overlaps with the installation operation | work of the inner wall panel 12 in 1st Embodiment.

  First, as shown in FIG. 12, the first inner wall panel 55 </ b> A is assembled to the wooden brick 19. Specifically, the inner wall frame 57 of the panel 55 </ b> A is fixed to the wooden brick 19.

  Subsequently, the next inner wall panel 55B is assembled adjacent to the first inner wall panel 55A. Specifically, the inner wall panel 55B is assembled adjacent to the side of the first inner wall panel 55A where the vertical frame member 57b is provided. In this operation, first, the protruding portion 65 of the inner wall member 21 in the next inner wall panel 55B is opposed to the protruding portion 64 of the vertical frame member 57b in the inner wall panel 55A, and each inner wall is located between the protruding portions 64, 65 facing each other. The side ears 63c and 63d of the bag body 61 of the panel 55A are sandwiched (more specifically, the side ears 63c are protruding portions 66). In such a sandwiched state, the inner wall panel 55B is fixed to the wooden brick 19 and the protruding portion 65 of the inner wall panel 55B is fixed to the protruding portion 64 of the inner wall panel 55A.

  Thereafter, the remaining inner wall panels 55 are sequentially assembled in the manner described above. After the assembly of the inner wall panel 55 is completed, the floor finishing material 33 is laid on the floor base material 32. As a result, the lower ear portion 63 a of the bag body 61 of each inner wall panel 55 is sandwiched between the floor base material 32 and the floor finish material 33.

  Thereafter, a ceiling finishing material 39 is attached to the lower surface of the ceiling base material 37. At this time, the bonding is performed in a state where the upper ear portion 63b of the bag body 61 of each inner wall panel 55 is sandwiched between the ceiling base material 37 and the ceiling finishing material 39. Thereby, a series of work is completed.

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

  An extension portion 68 that extends laterally from the inner wall material 21 is provided in a part of the lower ear portion 63 a, and in the adjacent inner wall material 21, an in-wall heat insulating material 58 provided on the back surface of one inner wall material 21. The extension portion 68 of the lower ear portion 63a is overlapped with the lower ear portion 63a of the in-wall heat insulating material 58 provided on the back surface of the other inner wall material 21, and the floor base material 32 and the floor finish material are overlapped with each other. 33. In this case, between the floor base material 32 and the floor finish material 33 in a state where the lower ear portions 63a of the respective wall heat insulating materials 58 provided on the back surfaces of the adjacent inner wall materials 21 are partially overlapped with each other. Therefore, it is possible to form a continuous airtight line along the direction in which the inner wall materials 21 are arranged. Therefore, in this case, airtightness can be improved.

  In the inner wall panel 55, the inner wall frame 57 is provided with a vertical frame member 57 b provided along the side edge of the inner wall member 21, and the side ear portion of the wall heat insulating member 58 is provided between the vertical frame member 57 b and the inner wall member 21. 63c was inserted. And in the adjacent inner wall panel 55, the vertical frame material 57b of one inner wall panel 55 is provided with a protruding portion 64 that protrudes toward the other inner wall panel 55 and faces the inner wall material 21 of the panel 55, and faces each other. Between the inner wall member 21 and the protruding portion 64, the edge of the side ear 63 c sandwiched between the vertical frame member 57 b and the inner wall member 21 in one inner wall panel 55, and the inner wall of the other inner wall panel 55. The side ear portion 63d of the heat insulating material 58 is sandwiched. In this case, the vertical frame member 57 b is disposed across the back surface of the inner wall member 21 of each adjacent inner wall panel 55, and one inner wall panel 55 has a space between the vertical frame member 57 b of the panel 55 and the inner wall member 21. The side ear portion 63c of the in-wall heat insulating material 58 is sandwiched between the vertical frame material 57b and the inner wall material 21, and the air is prevented from entering and exiting. On the other hand, between the protruding portion 64 of the vertical frame member 57b and the inner wall member 21 of the other inner wall panel 55, the end portion of the side ear portion 63c in the one inner wall panel 55 (specifically, the protruding portion of the side ear portion 63c). Since the portion 66) and the side ear 63d of the in-wall heat insulating material 58 in the other inner wall panel 55 are sandwiched, the air flow between the vertical frame material 57b and the inner wall material 21 is suppressed. ing. Specifically, between the protruding portion 64 of the vertical frame member 57b and the inner wall member 21 of the other inner wall panel 55, a side ear portion 63c in one inner wall panel 55 and a side ear portion 63d in the other inner wall panel 55 are provided. Are sandwiched in a stacked state. As described above, air can be prevented from entering and exiting between the adjacent inner wall panels 55, and as a result, airtightness can be improved.

[Other Embodiments]
The present invention is not limited to the above embodiment, and may be implemented as follows, for example.
(1) In the configuration of each of the above embodiments, the inner wall panels 12 and 55 are provided with a guide member facing the lower end surface of the inner wall member 21, and the bag bodies 26 and 61 are provided between the guide member and the lower end surface of the inner wall member 21. The lower ear portions 28 a and 63 a may be sandwiched and provided so that the lower ear portions 28 a and 63 a are pulled out to the surface side of the inner wall material 21. For example, as shown in FIG. 15A, the guide member 71 is provided so as to straddle the lower end surface of the inner wall material 21 and the lower surface of the horizontal frame member 22b of the inner wall frame 22, and the lower end surface of the inner wall material 21 and the guide member It is conceivable that the lower ear portion 28 a is sandwiched between the lower ear portion 71 and the lower ear portion 71. In this case, the guide member 71 is fixed to the horizontal frame member 22b with screws or the like.

  Further, as shown in FIG. 15 (b), a facing portion 72 that faces the lower end surface of the inner wall material 21 is formed integrally with the horizontal frame material 22 b below the inner wall frame 22, and the facing portion 72 and the inner wall material 21 are formed. The lower ear portion 28a may be sandwiched between the lower end surface of each other. In this case, since the guide member is composed of the horizontal frame member 22b, an increase in the number of parts can be suppressed when the guide member is provided. According to each of the above configurations, since the inner wall panel 12 can be installed in a state where the lower ear portion 28a is pulled out to the surface side of the inner wall material 21, the lower ear portion 28a is attached to the inner wall when the inner wall panel 12 is installed. The occurrence of inconveniences such as entering the back side of the material 21 can be suppressed.

  (2) In the lower ear portion 28a of the bag body 26, the overlapping portion is formed by folding up and down the portion drawn to the surface side of the inner wall material 21 through the space between the lower end portion of the inner wall material 21 and the floor base material 32. The overlapped portion may be formed and sandwiched between the floor base material 32 and the floor finish material 33. Since the bag body 26 is made of thin film materials 26 a and 26 b, when a gap is generated between the floor base material 32 and the floor finishing material 33, the lower ear portion 28 a is interposed between the both 32 and 33. Cannot be sufficiently sandwiched, and as a result, the desired airtight performance may not be obtained. In this regard, if the overlapping portion is formed as described above, the overlapping portion can be made relatively thick in the lower ear portion 28a, so that the overlapping portion is interposed between the floor base material 32 and the floor finishing material 33. By sandwiching, the lower ear portion 28a can be sandwiched even if there is a slight gap between the both 32 and 33.

  (3) In each of the above embodiments, the floor finish 33 may be a carpet. Even if the lower ear portions 28a and 63a of the bags 26 and 61 are sandwiched between the floor finishing material 33 made of carpet and the floor base material 32, the airtightness between the inner wall material 21 and the floor finishing material 33 is maintained. It can be secured.

  (4) In each of the above embodiments, the upper ear portions 28b, 63b of the bags 26, 61 are both between the ceiling base material 37 and the peripheral edge 38, and between the ceiling base material 37 and the ceiling finishing material 39. You may make it pinch | interpose.

  (5) The inner wall panel 55 in the second embodiment may be changed to other configurations. An example is shown in FIG. The inner wall panel 75 shown in FIG. 16 includes the inner wall material 21, the inner wall frame 22, and the in-wall heat insulating material 23, like the inner wall panel 12 in the first embodiment. The inner wall panel 75 is assembled in a state where the inner wall frame 22 and the inner wall heat insulating material 23 are displaced in the width direction with respect to the inner wall material 21, and specifically, the inner wall panel 75 is displaced by half the width of the vertical frame member 22a. It is assembled in the state of letting it. In this case, on one end side in the width direction of the inner wall panel 75, the vertical frame member 22 a protrudes to the side of the inner wall member 21, and the protruding portion is a frame protruding portion 76. On the other hand, at the other end in the width direction of the inner wall panel 75, the inner wall member 21 protrudes to the side of the inner wall frame 22 (vertical frame member 22a), and the protruding portion is a wall protrusion 77. Each of the protruding portions 76 and 77 has a protruding length that is half the width of the vertical frame member 22a. Further, on one side in the width direction of the inner wall panel 75, a part of the side ear portion 26 c of the bag body 26 sandwiched between the vertical frame member 22 a and the inner wall member 21 protrudes laterally from the inner wall member 21. The protruding portion is a protruding portion 78.

  In each adjacent inner wall panel 75, the frame protruding part 76 in one inner wall panel 75 is provided to face the wall protruding part 77 in the other inner wall panel 75, and between these opposing protruding parts 76, 77. Is sandwiched by the side ear portion 28c of the bag body 26 in one inner wall panel 75, specifically, the protruding portion 76 thereof. In this case, air can be prevented from entering and leaving between the frame protruding portion 76 of one inner wall panel 75 and the wall protruding portion 77 of the other inner wall panel 75. As a result, even in such a configuration, the entry and exit of air through the inner wall panels 75 can be suppressed.

  (6) In the second embodiment, in the state in which the side ear portion 63 c of the bag body 61 is sandwiched between the vertical frame member 57 b and the inner wall member 21, a part of the side ear portion 63 c is more than the inner wall member 21. Although it protrudes to the side, it may be prevented from protruding. That is, the protruding portion 66 may not be provided in the side ear portion 63c. Even in this case, in each of the adjacent inner wall panels 55, an in-wall heat insulating material 58 in the other inner wall panel 55 is provided between the frame protruding portion 64 in one inner wall panel 55 and the wall protruding portion 65 in the other inner wall panel 55. Since the side ear portion 63d can be sandwiched, the air can be prevented from entering and exiting between the inner wall panels 55 as in the second embodiment.

  (7) In the above embodiments, the upper ear portions 28b and 63b may not be sandwiched between the ceiling base material 37 and the peripheral edge 38 or the ceiling finishing material 39.

  (8) In the above embodiment, an example of application to a unit type building has been described. However, the present invention is also applied to a building having another structure such as a building constructed by a steel frame construction method or a building constructed by a conventional wooden construction method. The invention can be applied.

  (9) In the first or second embodiment, when the inner wall panel 12 is assembled to the wooden brick 19 fixed to the outer wall frame 15, it is necessary to arrange the frame heat insulating material 24 of the panel 12 between the wooden bricks 19. There is. Here, since the frame heat insulating material 24 and the wooden brick 19 are arranged in a vertical contact or close positional relationship, when the above work is performed, the frame heat insulating material 24 hits the wooden brick 19 or the like. It is assumed that the frame heat insulating material 24 cannot be easily disposed between the wooden bricks 19. In particular, when the inner wall panel 12 is assembled, it is assumed that the positional relationship between the frame heat insulating material 24 arranged on the back side of the panel and the wooden brick 19 cannot be confirmed, and the above work is considered to be extremely difficult.

  Therefore, as a solution, it is conceivable to arrange the frame heat insulating material 24 and the wooden brick 19 with a predetermined gap so that the frame heat insulating material 24 can be easily disposed between the wooden bricks 19. Heat and air flow in and out of the gap between the heat insulating material 24 and the wooden brick 19, and as a result, the heat insulating performance and the airtight performance may be reduced.

  Therefore, in this embodiment, as a countermeasure, the frame heat insulating material 24 and the wooden brick 19 are unitized in advance in a state where they are in contact with each other, the unitized heat insulating material unit is assembled to the outer wall frame 15, and then the heat insulating material unit. The inner wall panel 12 is assembled to the wooden brick 19. According to this, the assembly | attachment operation | work of the inner wall panel 12 can be made easy, suppressing the fall of heat insulation performance and airtight performance. Hereinafter, the configuration of this example will be described with reference to FIGS. 17 and 18. FIG. 17 is a longitudinal sectional view showing the configuration of the outer wall structure in this example, and FIG. 18 is a perspective view showing the heat insulating material unit 81. In the following description, differences from the first embodiment will be mainly described.

  As shown in FIG. 17, in the outer wall structure of the building 80 in the present embodiment, the heat insulating unit 81 is fixed to the indoor side surface of the outer wall frame 15 of the outer wall panel 11, and the inner wall panel is disposed on the outdoor side of the heat insulating unit 81. 12 is fixed. As shown in FIG. 18, the heat insulating material unit 81 includes a long flat plate-like base plate 82 made of plywood, and trees arranged alternately on one plate surface of the base plate 82 along the longitudinal direction of the plate 82. The brick 19 and the frame heat insulating material 24 are provided. A plurality of wooden bricks 19 and frame heat insulating materials 24 are provided, and adjacent wooden bricks 19 and frame heat insulating materials 24 are in contact with each other. In this contact state, the wooden brick 19 and the frame heat insulating material 24 are each fixed to the base plate 82 with a tapping screw or the like. In this case, the wooden brick 19 and the frame heat insulating material 24 are integrated in a state where there is no gap between them, thereby suppressing a decrease in heat insulating performance and airtight performance.

  FIG. 19 is a front view showing a fixed state of the heat insulating material unit 81 with respect to the outer wall frame 15. As shown in FIG. 19, adjacent vertical frame members 15 a in adjacent outer wall frames 15 are provided in a state where the web portions are in contact with each other. The heat insulating unit 81 is disposed in each frame adjoining portion 84 where the vertical frame members 15a are adjacent to each other, and is adjacent to each frame adjoining portion 84 in a direction extending along the vertical frame member 15a. It is provided straddling each vertical frame member 15a. The heat insulating material unit 81 is provided in such a manner that the base plate 82 is in contact with the indoor side surface of each vertical frame member 15a (the indoor flange portion thereof). It is fixed to 15a (see FIG. 20).

  By the way, since the heat insulating material unit 81 is a long thing, it is assumed that the handling becomes difficult. For this reason, it is considered that it is difficult to assemble the heat insulating material unit 81 along the vertical frame material 15a so as not to be displaced. When assembling, there is a concern about the positional deviation in the direction perpendicular to the vertical frame member 15a. For example, the heat insulating material unit 81 is assembled in a state slightly inclined with respect to the vertical frame member 15a, and is orthogonal to the frame member 15a. There is a possibility that the positions of the upper and lower end portions of the heat insulating material unit 81 in the direction to be shifted. Therefore, in this example, in view of this point, the heat insulating material unit 81 is provided with positioning means for positioning the unit 81 in a direction orthogonal to the vertical frame material 15a, and the unit 81 is positioned by the positioning means. It can be fixed to the vertical frame member 15a. Hereinafter, such positioning means will be described with reference to FIG.

  As shown in FIG. 20, the base plate 82 of the heat insulating material unit 81 is provided with an engaging member 85 as positioning means. A plurality of engaging members 85 are attached at predetermined intervals along the longitudinal direction of the plate 82 on the back surface of the base plate 82, that is, the surface of the base plate 82 opposite to the surface on which the wooden bricks 19 are fixed. Yes. The engaging member 85 is made of a metal plate material having a substantially L shape. The engagement member 85 includes an attachment portion 85a attached to the back surface of the base plate 82 by adhesion or the like, and an engagement portion 85b extending from the attachment portion 85a to the opposite side of the base plate 82.

  Each engaging member 85 is attached to the plate 82 in such a direction that each engaging portion 85b extends in the longitudinal direction of the base plate 82. Specifically, each engaging portion 85b is aligned in the longitudinal direction. It is attached to line up. Further, in the attached state of the engaging member 85, the engaging portion 85 b is located at the approximate center in the width direction of the base plate 82.

  Note that the engagement member 85 is not necessarily L-shaped, and may have other shapes such as a T-shape formed by the attachment portion 85a and the engagement portion 85b. In short, it is only necessary that the engaging member 85 be provided with an engaging portion 85b extending to the back side of the base plate 82. Further, the engaging members 85 are not necessarily provided in a distributed manner along the longitudinal direction of the vertical frame member 15a, and may be provided continuously along the longitudinal direction. For example, it is conceivable that the engaging member 85 has a long shape along the longitudinal direction of the vertical frame member 15a. In short, the engagement member 85 (engagement portion 85b) only needs to be provided along the longitudinal direction of the vertical frame member 15a.

  Next, the positioning structure of the heat insulating material unit 81 by the engaging member 85 will be described with reference to FIG. FIG. 21 is a cross-sectional view showing a state where the heat insulating material unit 81 is positioned by the engaging member 85.

  As shown in FIG. 21, each vertical frame member 15a adjacent in the frame adjacent portion 84 has an arcuate curved surface portion 88 formed at the corner between the web portion and the flange portion. Between the curved surface portions 88 adjacent to each other in each vertical frame member 15a, there are groove portions 87 extending along the same frame member 15a. The groove portions 87 are formed at both ends in the indoor and outdoor directions at the boundary portion of each vertical frame member 15a. Has been. The engagement member 85 of the heat insulating material unit 81 enters the inside of the groove portion 87 provided at the end portion on the indoor side and opening to the same side among the groove portions 87. In this case, the engaging portion 85 b of the engaging member 85 enters the back side (outdoor side) portion narrowed in the groove portion 87 and is engaged with the groove portion 87. Thereby, the movement of the heat insulating material unit 81 in the direction orthogonal to the longitudinal direction of the vertical frame member 15a (that is, the horizontal width direction of the inner wall panel 12) is restricted. That is, the engagement member 85 functions as a positioning member that positions the heat insulating material unit 81 in a direction orthogonal to the vertical frame material 15a.

  Next, an operation procedure when the inner wall panel 12 is assembled to the outer wall frame 15 will be described.

  First, the heat insulating material unit 81 is fixed to the vertical frame material 15 a of each frame adjacent portion 84 of the outer wall frame 15. At this time, the engaging portion 85b of the engaging member 85 of the heat insulating material unit 81 is engaged with the groove portion 87 between the adjacent vertical frame materials 15a, and the heat insulating material unit 81 is fixed to the vertical frame material 15a in the engaged state. . In this case, since the heat insulating material unit 81 can be fixed in a state of being positioned in a direction orthogonal to the longitudinal direction of the vertical frame material 15a, the workability of assembling the heat insulating material unit 81 can be improved. Thereafter, the inner wall panel 12 is fixed to the wooden brick 19 of the heat insulating material unit 81.

  (10) In the configuration of (9) above, an engaged portion capable of engaging the engaging portion 85b of the engaging member 85 is provided in the groove portion 87 between the adjacent vertical frame members 15a, and the engaged portion The engagement portion 85b may be engaged with the heat insulating material unit 81 to restrict the movement of the vertical frame material 15a in the longitudinal direction. A specific example will be described below with reference to FIG. FIG. 22 is a perspective view showing a state in which the engaged portion is provided in the groove 87 between the adjacent vertical frame members 15a.

  As shown in FIG. 22, an engaged portion 94 that can engage with the engaging portion 85 b of the engaging member 85 is provided in the groove portion 87 between the adjacent vertical frame members 15 a. The engaged portion 94 is formed of, for example, a weld bead and is provided so as to fill a predetermined range in the longitudinal direction of the groove portion 87. A plurality of engaged portions 94 are provided along the longitudinal direction of the groove portion 87, and each of the engaged portions 94 is arranged at the same interval as the interval of the engaging members 85 in the base plate 82 of the heat insulating material unit 81. Yes. Note that the engaged portion 94 is not necessarily formed by a weld bead, and a member formed in accordance with the shape and size of the groove portion 87 is fitted into the groove portion 87 to form an engaged portion. Also good.

  FIG. 23 shows the adjacent vertical frame member 15a and the heat insulating unit 81, where (a) is a perspective view showing a state in which the unit 81 is separated from the vertical frame member 15a, and (b) shows the unit 81. It is a perspective view which shows the state fixed to the vertical frame material 15a.

  As shown in FIG. 23, the heat insulating material unit 81 is fixed to the vertical frame member 15a in a state where the engaging portion 85b of the engaging member 85 enters the groove portion 87 (this is the same as the configuration of (9) above). ). The engaging portion 85 b is disposed in contact with the engaged portion 94 above the engaged portion 94 in the groove portion 87. In this case, movement of the heat insulating material unit 81 to one side (specifically, downward) in the longitudinal direction of the vertical frame member 15a is restricted by the contact.

  In the above configuration, when the heat insulating material unit 81 is assembled to the vertical frame member 15a, first, the engaging portion 85b of the engaging member 85 enters the groove portion 87, and the engaging portion 85b is covered in the groove portion 87. The engaging portion 94 is disposed in contact with the engaged portion 94 above the engaging portion 94. Thereby, the engaging portion 85 b is engaged with the groove portion 87 and is engaged with the engaged portion 94. As a result, the heat insulating material unit 81 is restricted from moving in the direction perpendicular to the longitudinal direction of the vertical frame member 15a, and is restricted from moving in the longitudinal direction of the vertical frame member 15a. The positioning is performed not only in the direction perpendicular to the longitudinal direction of the vertical frame member 15a but also in the longitudinal direction of the frame member 15a. And in this positioning state, the heat insulating material unit 81 is fixed to the vertical frame material 15a. According to this configuration, the work of assembling the heat insulating material unit 81 can be further facilitated.

  (11) Further, in the configuration of the above (9) or (10), the base plate 82 penetrates the engaging member 85 on the fixed surface side of the wooden brick 19 (and the frame heat insulating material 24) in the base plate 82. An extending positioning portion may be provided, and the positioning of the both 19 and 24 may be achieved by bringing the wooden brick 19 and the frame heat insulating material 24 into contact with the positioning portion. In this case, the engaging member 85 used for positioning the heat insulating material unit 81 can also be used for positioning when the wooden brick 19 and the frame heat insulating material 24 are attached to the base plate 82. A specific example is shown in FIG.

  In FIG. 24A, the engaging member 96 is formed to have a pin shape and is made of a metal such as stainless steel. The engaging member 96 is inserted into a through hole (not shown) formed in the base plate 82, and extends to both sides of the plate 82 in the inserted state. In this case, a portion of the engaging member 96 extending from the back surface of the base plate 82 is an engaging portion 97, and a portion extending from the surface of the base plate 82 is a positioning portion 98. Although illustration is omitted, the engaging portion 97 is a portion that enters the groove portion 87 between the adjacent vertical frame members 15 a and engages with the groove portion 87 or the engaged portion 94. The positioning portion 98 is disposed between the wooden brick 19 and the frame heat insulating material 24, and abuts against both the members 19 and 24 in the disposed state. In this case, the positioning portion 98 can be used for positioning the wooden brick 19 and the frame heat insulating material 24.

  The engagement member 101 in FIG. 24B is obtained by joining the engagement plate 102 to the engagement member 96 in FIG. 24A by welding. The engagement plate 102 is made of a long plate-shaped sheet metal, and its short width is the same as the length of the engagement portion 97. One end of the engagement plate 102 is fixed to the engagement portion 97 in a state where the longitudinal direction thereof is directed to the longitudinal direction of the base plate 82. In this case, the engaging portion 97 and the engaging plate 102 are portions that enter the groove portion 87, respectively, and the portion engaged with the groove portion 87 is longer than the engaging member 96 (FIG. 24A). It is secured. In this case, stable positioning of the heat insulating material unit 81 is possible.

  Further, as shown in FIG. 24 (c), the engaging members 96, 101 are placed between the wooden brick 19 and the frame heat insulating material 24 on the back side of the base plate 82 (with the fixed surface of the wooden brick 19 on the plate 82). An insertion portion 105 that can be inserted from the opposite surface side) may be provided.

  DESCRIPTION OF SYMBOLS 10 ... Building, 12 ... Inner wall panel, 21 ... Inner wall material as inner wall surface material, 22 ... Inner wall frame, 23 ... Insulation material in a wall, 26 ... Bag body as cover material, 27 ... Fiber system as fiber material Insulating material, 28 ... ear part, 28a ... lower ear part, 28b ... upper ear part, 28c ... side ear part, 32 ... floor base material as floor base material, 33 ... floor finishing material as floor finish surface material, 37 ... Ceiling base material as a ceiling base material, 38 .. peripheral edge, 39. Ceiling finishing material as a ceiling finishing surface material, 55... Inner wall panel, 57 .. inner wall frame, 57 b .. vertical frame material as a vertical frame material, 63. Ear part, 63c ... side ear part, 63d ... side ear part, 64 ... frame protruding part as opposed part, 68 ... extension part, 71 ... guide member.

Claims (7)

On the back side of the inner wall surface material installed on the floor base material, an in-wall heat insulating material is provided along the back surface of the inner wall surface material by covering the fiber material formed in a plate shape with a cover material. Applied to the building
A part of the cover material is provided with an ear extending outward from the peripheral edge of the fiber-based material,
A lower ear portion extending from the lower side of the fiber-based material in the ear portion extends to a surface side of the inner wall surface material through a space between a lower end portion of the inner wall surface material and the floor base surface material, and a part thereof It is sandwiched between the floor base material and the floor finishing material laid thereon ,
A ceiling base material is provided above the inner wall material,
Below the ceiling base surface material, a ceiling finishing surface material made of a sheet material, and a peripheral edge extending along the boundary between the ceiling base surface material and the inner wall surface material are provided,
An upper ear portion extending from the upper side of the fiber-based material in the ear portion extends to the surface side of the inner wall surface material through between the upper end portion of the inner wall surface material and the ceiling base surface material, and its end The part is sandwiched between the peripheral edge and the ceiling base material,
The airtight structure of a building, wherein the upper ear portion is not sandwiched between the ceiling finishing surface material and the ceiling base surface material . A plurality of the inner wall surface materials are installed side by side, and applied to a building in which the inner wall heat insulating material is disposed for each inner wall surface material,
The lower ear portion has an extension in which a part of the inner wall surface material extends laterally from the inner wall surface material by setting the length in the width direction of the inner wall surface material to be larger than the width dimension of the inner wall surface material. It has become a department,
In the adjacent inner wall surface material, the extension portion of the lower ear portion of the heat insulating material in the wall provided on the back surface of one inner wall surface material is the heat insulation in the wall provided on the back surface of the other inner wall surface material. 2. The building airtight structure according to claim 1, wherein the building is overlapped with the lower ear portion and sandwiched between the floor base surface material and the floor finish surface material in the overlapped state. An inner wall panel having the inner wall surface material, the inner wall heat insulating material, and an inner wall frame provided around the inner wall heat insulating material on the back surface side of the inner wall surface material, and a plurality of the inner wall panels installed side by side. Applied to buildings that are
In the inner wall panel, the inner wall frame has a vertical frame member provided along a side edge of the inner wall surface material, and the insulating material in the wall is interposed between the vertical frame member and the inner wall surface material. Side ears extending laterally from the fibrous material in the ears are sandwiched,
In the adjacent inner wall panels, the vertical frame member of one inner wall panel has a facing portion that protrudes toward the other inner wall panel and faces the inner wall surface material of the panel, and the facing inner wall surface material and Between the said opposing part, the edge part of the said side ear part pinched | interposed between the said vertical frame material and the said inner wall surface material in said one inner wall panel, and the said heat insulation in the wall in said other inner wall panel airtight structure of the building according to claim 1 or 2, characterized in that at least one is sandwiched among the side ears of wood. In the one inner wall panel, the side ear portion sandwiched between the vertical frame member and the inner wall surface material partially protrudes laterally from the inner wall surface material, and the protruding portion is the other inner wall. The airtight structure of a building according to claim 3 , wherein the building is sandwiched between the facing portion and an inner wall surface material of the other inner wall panel in a state of being overlapped with the side ear portion of the panel. The inner wall surface material is integrally provided with the inner wall heat insulating material and a guide member arranged in a state facing the lower end surface of the inner wall surface material,
2. The lower ear portion is provided in a state of being sandwiched between the guide member and a lower end surface of the inner wall surface material, thereby extending to the surface side of the inner wall surface material. The airtight structure of the building as described in any one of thru | or 4 . The airtight structure of a building according to any one of claims 1 to 5 , wherein the cover material having the ear portion is made of a moisture-proof material. On the back side of the inner wall surface material, an inner wall frame is provided surrounding the wall heat insulating material,
Ears of the table covering material of the wall insulation, building according to any one of claims 1 to 6, characterized in that it is sandwiched between the inner wall surface material and the inner wall frame Airtight structure.

Images