JP2017008598A - External wall insulation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To curb a reduction in insulation performance.SOLUTION: An external wall insulation structure comprises: an external wall frame 22 which is fixed to a ceiling beam 18 and a floor beam 20, and supports an external wall surface material 14; an inner wall frame 24 which is fixed to the external wall frame 22 with a distance therefrom toward an indoor side, and supports an inner wall surface material 28; a plate-like intra-wall insulation material 26 which is installed between the external wall frame 22 and the inner wall frame 24 with an outdoor side surface positioned closer to the indoor side than an outdoor side surface 51 of webs 48 on the ceiling beam 18 and the floor beam 20; a plate-like insulation material 66 which contacts the outdoor side surface of the webs on the ceiling beam 18 and the floor beam 20 with a building inner edge section 86 arranged in a manner that overlaps with an upper edge section 82 and a lower edge section 83 of the intra-wall insulation material 26 in a horizontal direction; and a seal material 84 which has elasticity, and is sandwiched between the upper edge section 82 and the lower edge section 83 of the intra-wall insulation material 26 and the building inner edge section 86 of the insulation material 66 opposite to the upper edge section 82 and the lower edge section 83 of the intra-wall insulation material 26.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an outer wall heat insulating structure.

  The following Patent Document 1 discloses a heat insulating structure for a unit type building. In the outer wall heat insulating structure of this unit type building, the heat insulating material is provided between the large beam and the outer wall surface material. This heat insulating material has one part attached to the outer wall frame on one side and the part abutting the outdoor side surface of the web of the large beam, and the part disposed between the ceiling large beam and the floor large beam and disposed on the inner wall side. Is formed.

JP2012-154063A (FIG. 7)

  However, in the outer wall heat insulating structure disclosed in Patent Document 1, the heat insulating material is formed integrally with a portion attached to the outer wall frame and a portion arranged on the inner wall side, and an assembling error that occurs during assembling is eliminated. Absorbing structure is not provided. For this reason, the work efficiency at the time of a heat insulating material assembly | attachment may deteriorate and productivity may fall.

  In view of the above problems, an object of the present invention is to obtain an outer wall heat insulating structure capable of improving productivity.

  The outer wall heat insulating structure according to the first aspect includes an outer wall frame that is fixed to a large beam of a building unit and supports an outer wall surface material, and an inner wall frame that is spaced apart on the indoor side of the outer wall frame and supports the inner wall surface material. And is provided between the outer wall frame and the inner wall frame, is formed in a plate shape, and the outdoor side surface is disposed on the indoor side with respect to the outdoor side surface of the web of the large beam, and the outer wall frame and the inner wall frame A first heat insulating material that insulates the space, and abuts on the outdoor side surface of the web of the large beam, is formed in a plate shape, and is disposed so that one end portion thereof overlaps the end portion of the first heat insulating material in the horizontal direction. A second heat insulating material that insulates between the outer wall surface material and the girder, and has elasticity, and is narrowed between an end portion of the first heat insulating material and one end portion of the second heat insulating material facing the second heat insulating material. Previously by being held It has a sealing member for sealing a gap between one end of the second heat insulating material between the end portion of the first insulation, a.

  The outer wall heat insulating structure according to a second aspect is the outer wall heat insulating structure according to the first aspect, wherein the sealing material is continuously provided along the longitudinal direction of the large beam.

  According to the 1st aspect, the sealing material which has elasticity is provided between the 1st heat insulating material and the 2nd heat insulating material. Therefore, even if the relationship between the first heat insulating material and the second heat insulating material does not become as set due to the assembling error, the assembling error can be absorbed by the elasticity of the sealing material. For this reason, the work efficiency at the time of assembly | attaching a heat insulating material can be improved.

  According to the second aspect, since the sealing material provided between the first heat insulating material and the second heat insulating material is provided continuously along the longitudinal direction of the large beam, the first heat insulating material and the second heat insulating material The gap between the two heat insulating materials is not possible due to the sealing material. Thereby, heat insulation performance can be improved further.

  As described above, the outer wall heat insulating structure according to the present invention has an excellent effect that productivity can be improved.

It is a perspective view which shows the building unit which has the outer wall heat insulation structure which concerns on one Embodiment. It is an expanded sectional view showing the state where the building upper part in the outer wall part of the building unit which has the outer wall heat insulation structure concerning one embodiment was cut in the building up-and-down direction. It is an expanded sectional view which shows the state which cut | disconnected the building lower side in the outer wall part of the building unit which has the outer wall heat insulation structure which concerns on one Embodiment in a building up-down direction. (A) is a schematic sectional drawing which shows the state before couple | bonding the outer wall panel in the external wall heat insulation structure which concerns on a proportionality to a building unit, (B) is the state which couple | bonded the outer wall panel with the building unit with respect to (A). It is a schematic perspective view which shows.

  Hereinafter, an embodiment of an outer wall heat insulating structure according to the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the building unit 10 that forms a building by being mounted on a foundation (not shown) has a rectangular parallelepiped shape. In FIG. 1, the outer wall surface material 14 (see FIG. 2) provided on the outer wall portion 12 is omitted for easy understanding of the configuration of the present embodiment. Outer pillars 16 are disposed at the four corners of the building unit 10, respectively. The outer column 16 is formed of square steel having a square cylindrical shape in plan view. The upper ends of the outer pillars 16 of the building unit 10 are connected to each other by four ceiling beams 18. Further, the lower ends of the outer pillars 16 are connected to each other by four floor beams 20. Furthermore, the ceiling beam 18 and the floor beam 20 are formed of grooved steel having a U-shaped cross section when cut along the height direction of the building (see FIG. 2).

  An outer wall portion 12 is provided from one outer pillar 16 to the other outer pillar 16. As shown in FIG. 2, the outer wall portion 12 includes an outer wall surface material 14, an outer wall frame 22, an inner wall frame 24, an in-wall heat insulating material 26 as a first heat insulating material, and an inner wall surface material 28. It consists of

  The outer wall frame 22 is formed in a substantially rectangular shape by an outer wall vertical frame 30 extending in the vertical direction of the building and an outer wall horizontal frame 32 extending in the horizontal direction (see FIG. 1). The outer wall vertical frame 30 and the outer wall horizontal frame 32 are made of steel.

  A plurality of outer wall vertical frames 30 are provided at intervals along the longitudinal direction of the ceiling beam 18 (floor beam 20). And the outer wall horizontal frame 32 is each couple | bonded with the edge part 34 of the both sides of the building up-down direction of each outer wall vertical frame 30. As shown in FIG. The outer wall horizontal frame 32 extends from one outer column 16 of the building unit 10 to the other outer column 16 opposite to the outer column 16, and includes a horizontal frame standing wall portion 36, a horizontal frame bottom wall portion 38, and the like. The cross section perpendicular to the longitudinal direction is formed in an L shape.

  Mounting brackets 40 as mounting members are provided at a plurality of intervals on the upper surface of the building in the horizontal frame bottom wall portion 38 of the outer wall horizontal frame 32 attached to the upper end 34 of the outer wall vertical frame 30. . In the mounting bracket 40, a cross section perpendicular to the longitudinal direction is formed in an L shape by a bracket bottom wall portion 42 and a bracket standing wall portion 44. The building lower side surface of the bracket bottom wall portion 42 and the building upper side surface of the horizontal frame bottom wall portion 38 of the outer wall horizontal frame 32 are coupled by a coupling means (not shown) such as welding.

  A fastening hole 46 is formed in the bracket standing wall 44 in the thickness direction. The indoor side surface of the bracket standing wall 44 is brought into contact with the outdoor side surface 51 of the web 48 of the ceiling beam 18, and the through hole 50 penetrating in the plate thickness direction of the web 48 of the ceiling beam 18 and the bracket standing wall 44. The outer wall frame 22 is fixed to the ceiling beam 18 when the mounting bracket 40 is pulled by inserting the bolt 52 through the fastening hole 46 and fastening with the nut 54. The indoor side end face 56 of the outer wall vertical frame 30 is disposed on the indoor side from the web 48 of the ceiling beam 18.

  A notch 58 is formed on the indoor side of the end 34 in the outer wall vertical frame 30. The notch 58 is provided along the longitudinal direction of the outer wall vertical frame 30, and is a notch as an indoor side end face that is outdoors and substantially parallel to the indoor end face 56 of the outer wall vertical frame 30. A part-side end face 60 and a notch part bottom face 62 extending from the lower end part of the notch part-side end face 60 to the end face 56 in a substantially horizontal direction are formed. The notch bottom surface 62 is disposed on the lower side of the building with respect to a ceiling surface material 64 described later. As a result, a slit shape is illustrated between the notch portion side end surface 60 in the notch portion 58 of the outer wall vertical frame 30 and the outdoor side surface 51 of the web 48 and on the lower side in the longitudinal direction of the outer wall vertical frame 30 with respect to the mounting bracket 40. A gap that is not formed is formed.

  A heat insulating material 66 as a second heat insulating material is provided in the slot-shaped gap between the notch 58 on the upper side of the building and the ceiling beam 18. The heat insulating material 66 is a plate-like resin heat insulating material, and is sandwiched between the notch portion side end surface 60, the web 48 of the ceiling beam 18 and a ceiling base material 68 described later. Further, the building inner end 86 as one end of the heat insulating material 66 is disposed on the lower side of the building than the upper end 82 as the end of the in-wall heat insulating material 26. Therefore, the building inner end 86 of the heat insulating material 66 and the upper end 82 of the in-wall heat insulating material 26 are arranged to face each other. In other words, the building inner end 86 of the heat insulating material 66 and the upper end 82 of the in-wall heat insulating material 26 are arranged so as to overlap in the horizontal direction.

  An outer wall surface material 14 is provided on the outdoor side of the outer wall frame 22. As an example, the outer wall surface material 14 has a configuration in which a plurality of siding materials formed in a substantially rectangular plate shape are provided, and the indoor side surface 70 of the outer wall surface material 14 abuts on the outdoor side surface of the outer wall vertical frame 30. Has been. Then, the outer wall surface material 14 and the outer wall vertical frame 30 are fastened with a fastener (not shown) so that the outer wall surface material 14 is attached to the outer wall frame 22.

  On the indoor side of the outer wall frame 22, an inner wall frame 24 is provided separately. The inner wall frame 24 is formed in a substantially rectangular shape by an inner wall vertical frame (not shown) extending in the vertical direction of the building and an inner wall horizontal frame 74 extending in the horizontal direction.

  A plurality of inner wall vertical frames are provided at intervals along the longitudinal direction of the ceiling beam 18 (floor beam 20). The inner wall vertical frame is disposed at a position facing the outer wall vertical frame 30. And the inner wall horizontal frame 74 is couple | bonded with the edge part of the both sides of the building up-down direction of each inner wall vertical frame. This inner wall horizontal frame 74 is extended from one outer pillar 16 in one building unit 10 to the other outer pillar 16 opposite to this, and the cross section orthogonal to the longitudinal direction is formed in a rectangular shape. Yes.

  An inner wall surface material 28 is attached to the indoor side of the inner wall frame 24. The inner wall surface material 28 is constituted by a gypsum board or the like as an example, and is attached to the inner wall frame 24 by a fastener (not shown).

  An in-wall heat insulating material 26 is provided between the outer wall frame 22 and the inner wall frame 24. The in-wall heat insulating material 26 is a plate-shaped resin heat insulating material, and is sandwiched between the outer wall frame 22 and the inner wall frame 24. Specifically, it is sandwiched between the indoor side end face 56 of the outer wall vertical frame 30, the outdoor side surface of the inner wall vertical frame and the outdoor side surface 80 of the inner wall horizontal frame 74. As described above, the indoor side end face 56 of the outer wall vertical frame 30 is disposed on the indoor side from the web 48 of the ceiling beam 18, so that the outdoor wall insulation 26 that is in contact with the end face 56 is in outdoor. The side surface is arranged on the indoor side from the web 48 of the ceiling beam 18. That is, the in-wall heat insulating material 26 is disposed on the indoor side with respect to the heat insulating material 66 that contacts the web 48 of the ceiling beam 18.

  A sealing material 84 is attached to the outdoor side surface of the upper end portion 82 of the in-wall heat insulating material 26. As an example, the sealing material 84 is made of a material having elasticity such as an eptsealer. And the sealing material 84 is set as the structure closely_contact | adhered to the indoor side surface in the building inner side edge part 86 of the heat insulating material 66. FIG. The sealing material 84 is continuously attached from one outer column 16 to the other outer column 16 along the longitudinal direction of the ceiling beam 18. In this embodiment, the sealing material 84 is attached to the upper end portion 82 of the in-wall heat insulating material 26 and is in close contact with the building inner end portion 86 of the heat insulating material 66. It is good also as a structure which attaches the sealing material 84 to the building inner side edge part 86 of the heat insulating material 66, and closely_contact | adheres to the upper end part 82 of the heat insulating material 26 in a wall for the reasons of the above.

  An inner heat insulating material 65 is provided inside the wall heat insulating material 26 and inside the inner wall frame 24. The inner heat insulating material 65 is formed in a plate shape, and is disposed so that the outdoor side surface is in contact with the indoor side surface of the in-wall heat insulating material 26.

  A ceiling base material 68 is provided below the building of the ceiling beam 18. A ceiling surface material 64 is provided between the ceiling base material 68 and the inner wall horizontal frame 74. Then, the ceiling surface material 64 is held between the ceiling base material 68 and the inner wall horizontal frame 74 by fixing the inner wall horizontal frame 74 to the ceiling base material 68 with a nail or the like (not shown). At the same time, the inner wall frame 24 is fixed to the building unit 10.

  A large beam heat insulating material 67 is provided inside the cross section of the ceiling large beam 18. The large beam heat insulating material 67 is made of a fiber-based heat insulating material, and is provided so as to fill the space inside the cross section of the ceiling large beam 18.

  As illustrated in FIG. 3, the end 34 of the outer wall vertical frame 30 on the lower side of the building is substantially symmetrical with the end 34 of the outer wall vertical frame 30 on the upper side of the building as the center. That is, the mounting bracket 41 is provided on the building lower side surface of the horizontal frame bottom wall portion 38 of the outer wall horizontal frame 32 provided at the end portion 34 on the lower side of the building. In the mounting bracket 41, a bracket bottom wall portion 42 and a bracket standing wall portion 45 are formed in an L-shaped cross section perpendicular to the longitudinal direction. The indoor side surface of the bracket standing wall portion 45 is brought into contact with the outdoor side surface 51 of the web 48 of the floor girder 20, and the through hole 50 and the bracket standing wall portion 44 penetrated in the plate thickness direction of the web 48 of the floor girder 20. The outer wall frame 22 is fixed to the floor girder 20 by pulling the mounting bracket 41 by inserting the bolt 52 through the fastening hole 47 and fastening with the nut 54. The indoor side end face 56 of the outer wall vertical frame 30 is disposed on the indoor side from the web 48 of the floor beam 20.

  A cutout portion 58 is formed at a location facing the web 48 of the floor girder 20 in the outer wall vertical frame 30. The notch bottom surface 62 is disposed on the upper side of the building with respect to the floor material 96. Thereby, a slit-like shape is not shown between the notch portion side end surface 60 in the notch portion 58 of the outer wall vertical frame 30 and the outdoor side surface 51 of the web 48 and on the upper side in the longitudinal direction of the outer wall vertical frame 30 with respect to the mounting bracket 41. A gap is formed.

  A heat insulating material 66 is provided in a slit-like gap between the notch 58 on the lower side of the building and the floor beam 20. The heat insulating material 66 is held between the notch portion side end surface 60 and the web 48 of the floor beam 20. Further, the building outer end portion 87 of the heat insulating material 66 is configured to contact the bracket bottom wall portion 42 of the mounting bracket 41. In addition, the building inner end 86 of the heat insulating material 66 is disposed on the lower side of the building than the lower end 83 of the in-wall heat insulating material 26. Therefore, the building inner end 86 of the heat insulating material 66 and the lower end 83 of the in-wall heat insulating material 26 are arranged so as to overlap in the horizontal direction.

  Further, a sealing material 84 is attached to the outdoor side surface of the lower end portion 83 of the in-wall heat insulating material 26 in the same manner as the upper end portion 82. The sealing material 84 is configured to be in close contact with the indoor side surface at the building inner end 86 of the heat insulating material 66 provided at the lower end 34 of the outer wall frame 22. Further, the sealing member 84 is continuously attached from one outer pillar 16 to the other outer pillar 16 along the longitudinal direction of the floor beam 20. In the present embodiment, the sealing material 84 is attached to the lower end 83 of the in-wall heat insulating material 26 so as to be in close contact with the building inner end 86 of the heat insulating material 66. It is good also as a structure which attaches the sealing material 84 to the building inner side edge part 86 of the heat insulating material 66, and is closely_contact | adhered to the lower end part 83 of the in-wall heat insulating material 26 for convenience.

  A floor base material 108 is provided on the upper side of the floor girder 20. A floor surface material 96 is provided between the floor base material 108 and the inner wall horizontal frame 74. Then, the floor surface material 96 is held between the floor base material 108 and the inner wall horizontal frame 74 by fixing the inner wall horizontal frame 74 to the floor base material 108 with a nail or the like (not shown).

  A large beam heat insulating material 67 is provided inside the cross section of the floor large beam 20. The large beam heat insulating material 67 is provided so as to fill the space inside the cross section of the floor large beam 20, similarly to the ceiling large beam 18.

  Next, the operation and effect of this embodiment will be described.

  Here, the operation and effect of this embodiment will be described using the proportionality shown in FIG. In addition, about the same component as this embodiment, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 4A, the outer wall portion 200 includes the outer wall surface material 14, the outer wall frame 22, and a heat insulating material 202. The outer wall portion 200 is attached to a casing configured to include the outer column 16 and the ceiling beam 18 and a floor beam (not shown) (see FIG. 4B).

  The heat insulating material 202 is attached to the outer wall frame 22 on one side, and the other side abuts against the outdoor side surface of the web 48 of the ceiling girder 18 and floor girder (the side of the outer wall material 14 from the chain line in the figure); A portion B (a side away from the outer wall surface material 14 from the chain line in the figure) disposed between the floor beams and disposed on the inner wall surface material side (not shown) is integrally formed.

  However, in the external wall heat insulating structure according to the comparative example, the A part and the B part of the heat insulating material 202 are integrally formed, and a structure for absorbing an assembling error that occurs during assembling is not provided. For this reason, the work efficiency at the time of attaching the heat insulating material 202 to a housing may deteriorate, and productivity may fall.

  On the other hand, according to this embodiment, as shown in FIGS. 2 and 3, a sealing material 84 having elasticity is provided between the in-wall heat insulating material 26 and the heat insulating material 66. Therefore, even if the relationship between the in-wall heat insulating material 26 and the heat insulating material 66 does not become as set due to the assembling error, the assembling error can be absorbed by the elasticity of the sealing material 84. For this reason, the work efficiency at the time of attaching the heat insulating material 26 in a wall and the heat insulating material 66 to the building unit 10 can be improved. Thereby, productivity can be improved.

  Further, since the sealing material 84 provided between the in-wall heat insulating material 26 and the heat insulating material 66 is continuously provided along the longitudinal direction of the ceiling beam 18 and the floor beam 20, the heat insulating material 26 in the wall is provided. And the heat insulating material 66 are configured such that no gap is formed by the sealing material 84. That is, the airtightness of the outer wall portion 12 is improved. Thereby, heat insulation performance can be improved.

  In this embodiment, the in-wall heat insulating material 26 and the heat insulating material 66 are resin-based heat insulating materials. However, the present invention is not limited to this, and any other material such as a fiber-based heat insulating material may be used as long as it is formed in a plate shape. May be.

  The embodiment of the present invention has been described above, but the present invention is not limited to the above, and various modifications other than those described above can be implemented without departing from the spirit of the present invention. Of course.

10 Building unit 14 Outer wall material 18 Ceiling girder
20 Floor girder (girder)
22 Outer wall frame 24 Inner wall frame 26 Insulation material in the wall (first insulation material)
27 Outdoor side surface 28 Inner wall surface material 48 Web 51 Outdoor side surface 66 Heat insulating material (second heat insulating material)
82 Upper end (end of first insulation)
83 Lower end (end of first insulation)
84 Sealing material 86 Inside edge of building (one edge of second heat insulating material)

Claims (2)

An outer frame fixed to a large beam of a building unit and supporting an outer wall material;
An inner wall frame that is spaced apart on the indoor side of the outer wall frame and supports an inner wall surface material;
It is provided between the outer wall frame and the inner wall frame, is formed in a plate shape, and the outdoor side surface is disposed on the indoor side with respect to the outdoor side surface of the web of the girder, and between the outer wall frame and the inner wall frame. A first heat insulating material to insulate;
Abuts against the outdoor side surface of the web of the large beam, is formed in a plate shape, and is disposed so that one end thereof overlaps the end of the first heat insulating material in the horizontal direction, and between the outer wall surface material and the large beam. A second heat insulating material to insulate,
It has elasticity and is sandwiched between the end of the first heat insulating material and the one end of the second heat insulating material facing the end of the first heat insulating material, and the end of the first heat insulating material and the second heat insulating material. A sealing material for sealing a gap with one end of the material;
An outer wall heat insulation structure. The sealing material is provided continuously along the longitudinal direction of the beam.
The outer wall heat insulating structure according to claim 1.

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