JP2012092493A - Heat insulation structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulation structure of a building capable of improving a heat insulation effect between floors and securing air permeability between an external wall and a beam.SOLUTION: A heat insulation part 20 comprises: a first external wall frame 44 where a first vent hole 45 is formed; a second external wall frame 46 where a second vent hole 47 is formed; a filling heat insulation material 58 which is filled between the first external wall frame 44 and the second external wall frame 46; and a ventilation spacer 60 which is held from both indoor and outdoor sides by the filling heat insulation material 58 and communicates the first vent hole 45 and the second vent hole 47. In this case, since the filling heat insulation material 58 is arranged on the indoor side and the outdoor side of the ventilation spacer 60, the movement of heat in indoor and outdoor directions is suppressed by the filling heat insulation material 58, and the heat insulation effect is improved. Further, since the ventilation spacer 60 communicates the first vent hole 45 and the second vent hole 47, the air permeability between external wall materials 42A, 42B and a ceiling girder 16A and a floor girder 22B is secured.

Description

  The present invention relates to a heat insulating structure of a building.

  The heat insulation structure of the building of patent document 1 is preventing the movement of the heat | fever in the indoor / outdoor direction in a beam part by heat-insulating the outer side of the floor beam of an upper floor and the ceiling beam of a lower floor with a heat insulating material. In addition, a ventilation layer is provided inside the outer wall material of the lower floor building unit and inside the outer wall material of the upper floor building unit, respectively, and the ventilation layer corresponding to the lower floor building unit, The ventilation layer corresponding to the building unit is communicated with each other by a pair of upper and lower ventilation spacers disposed between the second beam outer heat insulating material and the outer wall material.

JP 2009-299266 A

  However, in the case of the prior art disclosed in Patent Document 1, the heat insulating material is disposed only on the indoor side of the ventilation spacer, and the heat insulating effect is insufficient. Also, since a pair of upper and lower ventilation spacers are used, if the upper and lower ventilation holes are misaligned, the upper and lower ventilation spacers can be placed on the upper and lower sides according to the positions of the respective ventilation holes. Air leaks at the joint between the ventilation spacer and the lower ventilation spacer, making it difficult to circulate air continuously from the foundation side to the roof side, ensuring air permeability between the outer wall and the beam. It was difficult.

  An object of the present invention is to obtain a heat insulating structure for a building that can enhance the heat insulating effect and ensure the air permeability between the outer wall and the beam between floors in consideration of the above facts.

  In the heat insulating structure for a building according to the first aspect of the present invention, a first ventilation hole communicating with a gap between the outer wall of the lower floor and the ceiling beam of the lower floor is formed, one end is fixed to the outer wall of the lower floor, and the other end is A first support member attached to the ceiling beam on the lower floor and supporting the outer wall of the lower floor, and a second vent hole communicating with a gap between the outer wall of the upper floor and the floor beam of the upper floor are formed, A second support member disposed opposite to the first support member and having one end fixed to the outer wall of the upper floor and the other end attached to the floor beam of the upper floor to support the outer wall of the upper floor; A heat insulating material filled between the first support member and the second support member; one end in contact with the first support member and the other end in contact with the second support member; And a ventilation member that communicates between the first ventilation hole and the second ventilation hole. That.

  In the heat insulating structure of the building according to the invention of claim 1, since heat insulating materials are arranged on the indoor side and the outdoor side of the ventilation member, the heat transfer to the indoor and outdoor directions is suppressed by the heat insulating material, and the heat insulating effect is enhanced. be able to. Furthermore, since one end of the ventilation member is in contact with the first support member and the other end is in contact with the second support member to communicate the first ventilation hole and the second ventilation hole, the air permeability between the outer wall and the beam is increased. Can be secured.

  In the heat insulating structure for a building according to the invention of claim 2, the ventilation member has flexibility, and is formed by an upper end of the first support member and a lower end of the second support member, and the ventilation member is inserted. The vertical width of the insertion port is shorter than the vertical length of the ventilation member.

  In the heat insulation structure for a building according to the invention of claim 2, the flexible ventilation member is inserted from the insertion port in a bent state, and is extended and arranged between the first support member and the second support member. The Thereby, since the length of the opening width in the vertical direction of the insertion port is shorter than the length of the ventilation member, for example, even when a foaming heat insulating material is used, it is difficult for the heat insulating material to jump out of the insertion port.

  In the heat insulating structure for a building according to the invention of claim 3, the ventilation member includes a cylindrical portion opened in the vertical direction, and the cylindrical portion is horizontally penetrated to divide the cylindrical portion into a plurality of ventilation paths. A filling hole filled with a heat insulating material; and a widened portion that is widened in at least one of the upper end and the lower end of the cylindrical portion in the horizontal direction and covers at least one of the first vent hole and the second vent hole.

  In the heat insulating structure for a building according to the invention of claim 3, since at least one of the first vent hole and the second vent hole is covered by the widened portion, the first vent hole and the second vent hole are formed at the same position in the vertical direction. Even if not, the first vent hole, the second vent hole, and the inside of the vent member are communicated with each other through the widened portion. Thereby, the air permeability between the outer wall and the beam can be ensured regardless of the formation position of the air hole. Moreover, since the filling hole is formed in the ventilation member, even after the ventilation member is provided between the first support member and the second support member, the indoor side is filled with the heat insulating material through the filling hole. Can do.

  In the heat insulating structure for a building according to a fourth aspect of the present invention, the ventilation member is provided with a first attachment portion that is inserted into and attached to the first ventilation hole at one end, and is inserted into the second ventilation hole at the other end. It is a ventilation pipe provided with the 2nd attaching part attached by attaching.

  In the building heat insulating structure according to the fourth aspect of the present invention, the ventilation member is attached with one end inserted into the first ventilation hole and the other end inserted into the second ventilation hole. Accordingly, for example, even after the building is horizontally displaced due to an earthquake, the ventilation member maintains the communication between the first ventilation hole and the second ventilation hole, so that the air permeability between the outer wall and the beam is improved. Can be secured. Furthermore, since the first attachment portion is attached to the first ventilation hole and the second attachment portion is attached to the second ventilation hole, even if the first ventilation hole and the second ventilation hole are displaced in the longitudinal direction of the beam, the ventilation hole A member can be attached.

  In the heat insulating structure of a building according to the invention of claim 5, the ventilation member is a transparent member that allows a gap between the ceiling beam and the floor beam to be visually recognized when viewed from the insertion port.

  In the heat insulating structure for a building according to the invention of claim 5, since the gap between the ceiling beam and the floor beam is visually recognized through the ventilation member when the heat insulating material is filled from the insertion port, the heat insulation is performed up to the gap between the ceiling beam and the floor beam. Whether or not the material is filled can be visually confirmed at the construction site.

  In the heat insulating structure for a building according to the invention of claim 6, the heat insulating material is also filled in a gap between the ceiling beam and the floor beam.

  In the heat insulating structure of the building according to the invention of claim 6, since the gap between the ceiling beam and the floor beam is blocked by the heat insulating material, the heat transfer to the indoor and outdoor directions is suppressed by the heat insulating material, and the heat insulating effect is obtained. Can be increased.

  As described above, according to the heat insulating structure of a building according to the present invention described in claim 1, heat insulation is provided between floors and air permeability between the outer wall and the beam is maintained regardless of the formation position of the air holes. It has an excellent effect that it can be secured.

  According to the heat insulating structure for a building according to the second aspect of the present invention, even when a foaming heat insulating material is used, the heat insulating material has an excellent effect that it is difficult to jump out of the insertion opening.

  According to the heat insulation structure for a building according to the third aspect of the present invention, there is an excellent effect that the air permeability between the outer wall and the beam can be ensured regardless of the formation position of the air hole.

  According to the heat insulating structure for a building according to the present invention as set forth in claim 4, even after the building is horizontally displaced due to an earthquake, an excellent effect that air permeability between the outer wall and the beam can be secured. Have

  According to the heat insulation structure of a building according to the present invention as set forth in claim 5, it is possible to visually check whether or not the heat insulating material is filled up to the gap between the ceiling beam and the floor beam at the construction site. Have.

  According to the heat insulation structure of a building concerning the present invention according to claim 6, it has the outstanding effect that the heat insulation effect can be heightened.

It is a perspective view of the building concerning a 1st embodiment. It is sectional drawing of the boundary part of the lower building unit and upper building unit of the building which concerns on 1st Embodiment. It is the perspective view which looked at the outer wall material which concerns on 1st Embodiment from the inner side. It is a perspective view of the ventilation spacer concerning a 1st embodiment. It is a perspective view showing the state where a plurality of ventilation spacers concerning a 1st embodiment are arranged in a building. (A), (B) It is explanatory drawing which shows the procedure which attaches a heat insulation sheet to the beam or pillar which concerns on 1st Embodiment. It is explanatory drawing which shows the other 1st Example which attaches a heat insulation sheet to the beam which concerns on 1st Embodiment. (A) It is a perspective view of the heat insulation sheet of other 2nd Example. (B) It is explanatory drawing which shows the procedure which attaches the heat insulation sheet | seat of another 2nd Example to a beam. (A)-(C) It is explanatory drawing which shows the procedure which inserts the ventilation | gas_flowing spacer which concerns on 1st Embodiment between a 1st outer wall frame and a 2nd outer wall frame. It is sectional drawing of the boundary part of the lower building unit and upper building unit of the building which concerns on 2nd Embodiment. It is explanatory drawing which shows the state which attached the ventilation spacer which concerns on 2nd Embodiment to the 1st outer wall frame and the 2nd outer wall frame. (A)-(C) It is explanatory drawing which shows the procedure which inserts the ventilation | gas_flowing spacer which concerns on 2nd Embodiment between a 1st outer wall frame and a 2nd outer wall frame. It is sectional drawing of the boundary part of the lower building unit in the other Example of the building which concerns on 1st Embodiment, and an upper building unit. It is a perspective view which shows the state which arrange | positions the heat insulating material of another Example on the beam which concerns on 1st Embodiment. (A), (B) It is sectional drawing which shows the procedure of inserting | pinching the heat insulating material of another Example between the beams which concern on 1st Embodiment.

  The heat insulation structure of the building concerning a 1st embodiment of the present invention is explained.

  FIG. 1 shows a building 10 of the first embodiment. As an example, the building 10 is composed of eight building units 12 and has two floors. The building unit 12 includes four columns 14, a ceiling beam 16 as an example of two sets of long and short ceiling beams arranged in parallel to each other, and a long and short beam arranged in parallel vertically with respect to the ceiling beams 16. It comprises a floor beam 22 as an example of a set of floor beams, and is constructed as a ramen structure by welding the ends of each beam to the ceiling and floor joints. However, the unit configuration of the building unit 12 is not limited to the above, and may be another box-shaped frame structure.

  For the ceiling beam 16 and the floor beam 22, channel steel (grooved steel) having a U-shaped cross section is used. The ceiling girder 16 is assembled in a rectangular frame shape to constitute a ceiling frame 24, and the floor girder 22 is assembled in a rectangular frame shape to constitute a floor frame 26. The four pillars 14 described above are erected between the ceiling frame 24 and the floor frame 26.

  Here, the ceiling frame 24 includes ceiling joint portions 28 at the four corners, and ends of the ceiling beams 16 having different lengths are welded to the ceiling joint portions 28, respectively. Similarly, the floor frame 26 includes floor joints 30 at the four corners, and ends of the floor beams 22 having different lengths are welded to the floor joints 30. And, the upper and lower ends of the column 14 are rigidly joined by welding between the ceiling joint portion 28 and the floor joint portion 30 that are arranged to face each other in the vertical direction (arrow Z direction in the figure), A building unit 12 is configured.

  In the following description, when it is necessary to distinguish the first floor and second floor members of the building unit 12, an A is added after the reference numeral of each member constituting the first floor building unit 12, and the second floor B is added after the number of the code | symbol of each member which comprises the building unit 12, and the member of the 1st floor and the 2nd floor is distinguished.

  As shown in FIG. 2, in the building unit 12A on the first floor, a ceiling material 38A is attached to the lower side of the ceiling beam 16A via a ceiling field edge 36A. In the building unit 12B on the second floor, a floor surface material 34B is attached to the upper side of the floor beam 22B via a floor base material 32B. An inner wall material 40 is erected on the lower side of the ceiling material 38A and the upper side of the floor surface material 34B. Further, in the building units 12A and 12B, the outer wall materials 42A and 42B are arranged outside the ceiling beam 16A and the floor beam 22B (outdoor side) with a space from the ceiling beam 16A and the floor beam 22B. .

  A first outer wall frame 44 as an example of a first support member having a substantially U-shaped cross section with an upper end opened in a side view is attached to the back surface (indoor side surface) of the outer wall member 42A. Further, a second outer wall frame 46 as an example of a second support member having a substantially U-shaped cross section with a lower end opened in a side view is attached to the back surface (indoor side surface) of the outer wall member 42B. Here, the heat insulating portion 20 as an example of the heat insulating structure of the building 10 includes a first outer wall frame 44, a second outer wall frame 46, a filling heat insulating material 58, which will be described later, and a ventilation spacer 60.

  As shown in FIG. 3, the first outer wall frame 44 and the second outer wall frame 46 are made of channel steel (groove steel) having a substantially U-shaped cross section as an example. The first outer wall frame 44 includes a bottom wall 44A arranged in a horizontal direction, a side wall 44B standing upward at an end portion on the outdoor side of the bottom wall 44A, and an upper end standing at an end portion on the indoor side of the bottom wall 44A. A plurality of first vent holes 45 penetrating in the thickness direction at intervals along the longitudinal direction (depth direction in FIG. 2) are formed in the bottom wall 44A. Yes. Further, the height of the side wall 44B is higher than the height of the side wall 44C.

  Similarly, the second outer wall frame 46 includes a ceiling wall 46A arranged in the horizontal direction, a side wall 46B standing downward at an end portion on the outdoor side of the ceiling wall 46A, and an end portion on the indoor side of the ceiling wall 46A. The ceiling wall 46A has a plurality of second ventilation holes 47 penetrating in the thickness direction at intervals along the longitudinal direction (depth direction in FIG. 2). Is formed. Further, the height of the side wall 46B is lower than the height of the side wall 46C.

  The upper end surface of the side wall 44B of the first outer wall frame 44 and the lower end surface of the side wall 46B of the second outer wall frame 46 are spaced apart from each other, and the upper end surface of the side wall 44B and the lower end surface of the side wall 46B are used as edges of the opening. An insertion port 49A into which the ventilation spacer 60 is inserted is formed. With this insertion port 49A and an opening 49B described later, a filling heat insulating material 58 and a ventilation spacer 60 described later can be inserted between the first outer wall frame 44 and the second outer wall frame 46.

  As shown in FIG. 2, the outer wall member 42 </ b> A has the side wall 44 </ b> C (see FIG. 3) of the first outer wall frame 44 fixed to the ceiling beam 16 </ b> A from the indoor side with bolts 48 and nuts 50. It is attached. Similarly, the outer wall member 42B is attached to the floor beam 22B by fixing the side wall 46C (see FIG. 3) of the second outer wall frame 46 to the floor beam 22B from the outdoor side with bolts 48 and nuts 50. Yes.

  The upper end surface of the outer wall member 42A and the lower end surface of the outer wall member 42B are spaced apart from each other, and an opening 49B is formed with the upper end surface of the outer wall member 42A and the lower end surface of the outer wall member 42B as the edge of the opening. Yes. And the opening part 49B is obstruct | occluded by the decorative body difference | error 70 attached to the outer side of outer wall material 42A, 42B. In addition, the filling heat insulating material 58 and the ventilation spacer 60 described later are inserted between the first outer wall frame 44 and the second outer wall frame 46 through the opening 49B and the insertion port 49A. Moreover, in the building 10, the water stop sheet | seat 51 is provided so that the opening part 49B may be plugged up.

  The waterproof sheet 51 has one upper surface bonded to the inner surface of the side wall 46B (see FIG. 3) of the second outer wall frame 46, and the other lower surface bonded to the outer surface of the outer wall member 42A. ing. And the center part of the water stop sheet | seat 51 is diagonally arrange | positioned from the lower end of the side wall 46B to the upper end of the outer wall material 42A, and has covered the opening part 49B. In addition, as an example of a method for attaching the water-stop sheet 51, there is an attachment method using a double-sided tape.

  On the other hand, between the inner wall member 40A and the outer wall member 42A, and between the inner wall member 40B and the outer wall member 42B, the outer wall member 40A is closely attached to the outside of the inner wall member 40A, and is separated from the outer wall member 42A, 42B. , Wall insulation materials 52A and 52B are provided.

  In the building unit 12A, a beam heat insulating material 54A is provided from the wall heat insulating material 52A to the first outer wall frame 44 between the ceiling beam 16A and the outer wall material 42A. The beam heat insulating material 54A is formed thinner than the wall heat insulating material 52A. Similarly, in the building unit 12B, a beam heat insulating material 54B is provided from the wall heat insulating material 52B to the second outer wall frame 46 between the floor large beam 22B and the outer wall material 42B. The beam heat insulating material 54B is formed to be thinner than the wall heat insulating material 52B.

  Further, a filling heat insulating material 58 is filled between the first outer wall frame 44 and the second outer wall frame 46 and between the ceiling beam 16A and the floor beam 22B. The wall heat insulating materials 52A and 52B, the beam heat insulating materials 54A and 54B, and the filling heat insulating material 58 have flexibility and elasticity. For example, fiber heat insulating materials such as glass wool and rock wool are used. it can. In the present embodiment, as an example of the filling heat insulating material 58, a cellulose heat insulating material that is filled and formed by spraying with a spray 98 (see FIG. 9C) is used.

  Here, the space between the wall heat insulating material 52A and the outer wall material 42A, the space between the wall heat insulating material 52B and the outer wall material 42B, the space between the beam heat insulating material 54A and the outer wall material 42A, and the beam A space between the heat insulating material 54B and the outer wall material 42B is a ventilation layer 56. The first outer wall frame 44 and the second outer wall frame 46 are sandwiched between filling heat insulating materials 58 disposed on the indoor side and the outdoor side, and the first floor ventilation layer 56 and the second floor ventilation layer 56 A ventilation spacer 60 as an example of a ventilation member that communicates with each other is disposed. The filling heat insulating material 58 and the ventilation spacer 60 are sandwiched between the first outer wall frame 44 and the second outer wall frame 46.

  Next, the ventilation spacer 60 will be described.

  As shown in FIG. 4, the ventilation spacer 60 has a cylindrical portion 62 that opens in the vertical direction, and penetrates the cylindrical portion 62 in the horizontal direction. 2 filling holes 64A and 64B that are divided into a plurality of ventilation paths 62A, 62B, and 62C in the arrangement direction of the ventilation holes 47 (see FIG. 3), a widening portion 66A that is widened horizontally at the lower end of the cylindrical portion 62, and a cylinder And a widened portion 66B widened in the horizontal direction at the upper end of the portion 62. The widened portion 66A, the air passages 62A, 62B, 62C, and the widened portion 66B are in communication with each other, and as indicated by an arrow A, air flows inside.

  One hole wall of the filling hole 64A constitutes a part of the side wall of the ventilation path 62A, and the other hole wall of the filling hole 64A constitutes a part of the side wall of the ventilation path 62B. Similarly, one hole wall of the filling hole 64B constitutes a part of the side wall of the ventilation path 62B, and the other hole wall of the filling hole 64B constitutes a part of the side wall of the ventilation path 62C. . In this way, each of the ventilation paths 62A, 62B, 62C is a cylindrical flow path. In the present embodiment, the air passages 62A, 62B, and 62C communicate with each other not only at the widened portions 66A and 66B but also at the upper and lower ends of the air passages 62A, 62B, and 62C.

  As shown in FIG. 2, the ventilation spacer 60 has a length (height) from the lower surface of the widened portion 66 </ b> A to the upper surface of the widened portion 66 </ b> B that is longer than the distance between the first outer wall frame 44 and the second outer wall frame 46. (Size). Accordingly, the lower surface of the widened portion 66A is in close contact with the upper surface of the bottom wall 44A (see FIG. 3) of the first outer wall frame 44, and the upper surface of the widened portion 66B is the top wall 46A (see FIG. 3) of the second outer wall frame 46. It is in close contact with the lower surface.

  Further, the widths of the widened portions 66A and 66B in the widening direction (horizontal direction) are substantially equal to the distance between the side wall 44B and the side wall 44C of the first outer wall frame 44 and the distance between the side wall 46B and the side wall 46C of the second outer wall frame 46. It is a size. Accordingly, the widened portion 66 </ b> A is disposed so as to cover the first vent hole 45, and the widened portion 66 </ b> B is disposed so as to cover the second vent hole 47. The air flowing into the ventilation spacer 60 from the first ventilation hole 45 flows out from the second ventilation hole 45 without leaking outside the ventilation spacer 60.

  Here, in the building 10, the length of the opening width in the vertical direction of the insertion port 49A and the opening 49B is shorter than the length in the vertical direction of the ventilation spacer 60, but the ventilation spacer 60 is transparent. Since it is made of a flexible material, it can be inserted through the insertion port 49A and the opening 49B even after the insertion port 49A and the opening 49B are formed. Further, since the ventilation spacer 60 is transparent, the gap between the ceiling beam 16A and the floor beam 22B is visible when the insertion port 49A and the opening 49B are viewed from the outdoor side.

  As shown in FIG. 5, as another example of the arrangement of the ventilation spacers 60, in a two-story building 80, a plurality of ventilation spacers 60 may be arranged at intervals in the digit direction, and are continuously (arranged). You may arrange. Further, a long ventilation spacer 72 having a plurality of filling holes 74 for filling the heat insulating material may be disposed.

  Next, attachment of the heat insulating material to the ceiling beam 16A and the floor beam 22B will be described.

  As shown in FIG. 2, the ceiling large beam 16 </ b> A and the floor large beam 22 </ b> B are covered with a heat insulating member 82 on the outer surface. The heat insulating member 82 on the ceiling beam 16A side and the heat insulating member 82 on the floor beam 22B side have the same structure except for the length. Therefore, here, the heat insulating member 82 on the ceiling beam 16A side will be described. The description of the heat insulating member 82 on the floor beam 22B side is omitted.

  As shown in FIG. 6A, the heat insulating member 82 includes, as an example, a resin foam heat insulating sheet 84 and a heat shrinkable sheet 86 in which the upper end and the lower end of the heat insulating sheet 84 are bonded to one surface. Has been. Then, by heating the heat insulating member 82 in a state where the heat insulating sheet 84 is in contact with the outer surface of the ceiling beam 16A, the heat shrinkable sheet 86 contracts, and the heat insulating member 82 ( A heat insulating sheet 84) is attached.

  Examples of the heat insulating sheet 84 include polyethylene foam, urethane foam, polystyrene foam, and phenol foam. In addition, as an example of the heat-shrinkable sheet 86, it is uniaxially contractible (it expands / contracts in the cross-sectional direction of the beam but does not expand / contract in the width direction). Also preferred are those capable of maintaining the shape, such as polyvinyl chloride, polypropylene, polyethylene, polystyrene, polyolefin, and polyethylene terephthalate.

  As shown in FIG. 6 (B), as another example using the heat insulating member 82, when a heat insulating material is attached to the outer peripheral surface of the steel pipe 88, one end of the heat insulating sheet 84 is bonded to one end of the heat shrinkable sheet 86. Then, the other end may be set as a free end, and the heat-shrinkable sheet 86 may be attached by being heated around the outer peripheral surface of the steel pipe 88.

  As another example of attaching the heat insulating member to the ceiling beam 16A, as shown in FIG. 7, a fiber layer 87 in a loop state is sprayed on the outer surface of the ceiling beam 16A with a spray 99, and one surface of the heat insulating sheet 84 is sprayed. A hook 89 is provided. And there exists the method of attaching the heat insulation sheet 84 like a hook-and-loop fastener by hooking the hook 89 on the fiber layer 87. FIG.

  Furthermore, as another example of attaching the heat insulating member to the ceiling beam 16A, as shown in FIG. 8A, a plurality of convex portions 84A are formed on one surface of the heat insulating sheet 84, and the other surface is protected. A film 92 is pasted. And as shown in FIG.8 (B), there exists the method of attaching the heat insulation sheet | seat 84 by press-fitting the convex part 84A in the hole 94 previously formed in the ceiling wall and side wall of the ceiling beam 16A.

  Next, the operation of the first embodiment will be described.

  First, the construction method of the heat insulation part 20 is demonstrated.

  As shown in FIG. 9A, the first outer wall frame 44 is fastened to the ceiling beam 16A with bolts 48 and nuts 50 to fix the outer wall member 42A. Similarly, the second outer wall frame 46 is fastened to the floor large beam 22B with bolts 48 and nuts 50, and the outer wall member 42B is fixed. The heat insulating materials for beams 54A and 54B are already installed.

  Subsequently, as shown in FIG. 9 (B), while bending the cylindrical portion 62 of the ventilation spacer 60, the widened portion 66B passes through the opening 49B and the insertion port 49A and is located between the first outer wall frame 44 and the second outer wall frame 46. Insert into. At this time, the filling holes 64 </ b> A and 64 </ b> B (see FIG. 4) are opened toward the insertion direction of the ventilation spacer 60. Then, the upper surface of the widened portion 66 </ b> B is brought into contact with the lower surface of the top wall 46 </ b> A of the second outer wall frame 46.

  Subsequently, as shown in FIG. 9C, the widened portion 66A is inserted between the first outer wall frame 44 and the second outer wall frame 46 through the opening 49B and the insertion port 49A. Then, the lower surface of the widened portion 66 </ b> A is brought into contact with the lower surface of the bottom wall 44 </ b> A of the first outer wall frame 44. Thereby, the ventilation spacer 60 is provided between the first outer wall frame 44 and the second outer wall frame 46 (the ventilation spacer 60 is self-supporting). Further, since the ventilation spacer 60 is provided, the air flowing from the first-layer ventilation layer 56 to the first ventilation hole 45 flows into the ventilation spacer 60 and flows upward in the ventilation spacer 60, and the second ventilation hole. It flows from 47 to the ventilation layer 56 on the second floor. Thereby, the ventilation layer 56 on the first floor and the second floor of the building 10 communicates.

  Here, the widened portions 66A and 66B have a size close to the width of the first outer wall frame 44 and the second outer wall frame 46 in the indoor / outdoor direction, and at a plurality of positions in the depth direction along the outer wall materials 42A and 42B. Since the first vent hole 45 and the second vent hole 47 are covered, it is not necessary to arrange the first vent hole 45 and the second vent hole 47 while confirming the positions thereof. For this reason, the ventilation spacer 60 can be easily installed.

  Subsequently, after the ventilation spacer 60 is erected, the filling heat insulating material 58 is sprayed using the spray 98 between the first outer wall frame 44 and the second outer wall frame 46 through the opening 49B and the insertion port 49A. The filling heat insulating material 58 sprayed to the outdoor side of the ventilation spacer 60 is filled into the indoor side through the filling holes 64A and 64B of the ventilation spacer 60, and is further filled between the ceiling beam 16A and the floor beam 22B. Is done. In addition, since the ventilation spacer 60 is a transparent member, it can be filled while confirming whether or not the filling heat insulating material 58 is filled between the ceiling beam 16A and the floor beam 22B.

  Then, as shown in FIG. 2, the one end part of the water stop sheet | seat 51 is affixed inside the 2nd outer wall frame 44, and the other end part of the water stop sheet | seat 51 is affixed on the surface by the side of the outer wall material 42A. Then, a decorative barrel difference 70 is attached to the peripheral edge of the opening 49B to seal the opening 49B. Thus, the heat insulation part 20 is formed.

  Next, the effect | action of the heat insulation part 20 is demonstrated.

  As shown in FIG. 2, in the heat insulating portion 20, since the filling heat insulating material 58 is disposed on the indoor side and the outdoor side of the ventilation spacer 60, the heat transfer in the indoor and outdoor directions is two layers, indoor and outdoor. It is suppressed by the filling heat insulating material 58. Thereby, the heat insulation effect of the building 10 can be improved. Further, since the ventilation spacer 60 allows the first ventilation hole 45 and the second ventilation hole 47 to communicate with each other, air permeability between the outer wall material 42A and the ceiling beam 16A and between the outer wall material 42B and the floor beam 22B is ensured. can do. Furthermore, since the heat insulating member 82 is attached to the outer surfaces of the ceiling beam 16A and the floor beam 22B, heat transfer to the indoor side via the ceiling beam 16A and the floor beam 22B can be suppressed.

  Further, in the heat insulating portion 20, the flexible ventilation spacer 60 is inserted in a bent state through the opening 49B and the insertion port 49A, and is extended between the first outer wall frame 44 and the second outer wall frame 46. Since the structure is erected, it is possible to set the lengths of the opening widths of the insertion port 49A and the opening 49B shorter than the length of the ventilation spacer 60. Thereby, even when the foaming filled heat insulating material 58 is filled, the filled heat insulating material 58 becomes difficult to jump out from the insertion port 49A. And since the opening width of the opening part 49B becomes short, the width | variety of the cosmetic cylinder difference 70 which covers the opening part 49B can be made small, and the weight reduction of the cosmetic cylinder difference 70 is attained.

  Furthermore, in the heat insulating portion 20, a plurality of first vent holes 45 and second vent holes 47 formed in the longitudinal direction (depth direction) of each of the first outer wall frame 44 and the second outer wall frame 46 are each one widened portion. Covering with 66A and 66B (see FIG. 4) makes it difficult to form gaps between the first outer wall frame 44 and the second outer wall frame 46 and the ventilation spacer 60, and air leakage is suppressed. For this reason, even if the formation position of the 1st ventilation hole 45 and the 2nd ventilation hole 47 does not correspond in the up-down direction (even if the formation position has shifted | deviated to the longitudinal direction of the ceiling large beam 16A and the floor large beam 22B), the widening part The insides of the first ventilation hole 45, the second ventilation hole 47, and the ventilation spacer 60 are communicated with each other through 66A and 66B.

  As described above, by using the ventilation spacer 60, the outer wall material 42A and the ceiling can be used regardless of the positions of the first ventilation holes 45 and the second ventilation holes 47 formed in the first outer wall frame 44 and the second outer wall frame 46. Air permeability between the large beam 16A and between the outer wall material 42B and the floor large beam 22B can be ensured. Further, since the filling holes 64A and 64B are formed in the ventilation spacer 60, even after the ventilation spacer 60 is installed between the first outer wall frame 44 and the second outer wall frame 46, the filling holes 64A and 64B. The filling heat insulating material 58 can be filled into the indoor side from the ventilation spacer 60 through. Further, the ventilation spacer 60 is self-supporting with the ventilation spacer 60 without being fixed with an adhesive or the like. For this reason, there is no peeling due to deterioration of the adhesive that occurs when an adhesive is used, and maintenance is not required.

  In addition, since the ventilation spacer 60 is transparent in the heat insulating portion 20, when the filling heat insulating material 58 is filled between the first outer wall frame 44 and the second outer wall frame 46 through the opening 49B and the insertion port 49A, the ventilation spacer 60 is vented. Since the gap between the ceiling beam 16A and the floor beam 22B can be visually recognized through the spacer 60, it is possible to check the filling state as to whether or not the filling heat insulating material 58 has been filled up to the gap between the ceiling beam 16A and the floor beam 22B. And in the heat insulation part 20, since the clearance between the ceiling beam 16A and the floor beam 22B is closed by the filled heat insulating material 58, the heat transfer in the indoor and outdoor directions in the building 10 is suppressed by the filled heat insulating material 58, and the heat insulation The effect can be enhanced.

  In addition, since the water stop sheet 51 is provided in the building 10, when rainwater or the like tries to enter the inside of the outer wall members 42 </ b> A and 42 </ b> B from the opening 49 </ b> B, the rain water or the like is inserted into the outer wall member 42 </ b> A through the water stop sheet 51. , 42B, and it is possible to prevent the ventilation spacer 60 and the filling heat insulating material 58 and the like disposed inside from getting wet.

  Next, the heat insulation structure of the building which concerns on 2nd Embodiment of this invention is demonstrated. Note that the same reference numerals as those in the first embodiment are given to the members that are basically the same as those in the first embodiment described above, and the description thereof is omitted.

  FIG. 10 shows a heat insulating portion 100 as an example of the heat insulating structure of the building 10 of the second embodiment. The heat insulating part 100 is different from the heat insulating part 20 (see FIG. 2) of the first embodiment in the configuration of a part using a plurality of ventilation pipes 110 as an example of a ventilation member instead of the ventilation spacer 60. Moreover, in the building 10 of 2nd Embodiment, the other members except the heat insulation part 100 are the same members as the building 10 of 1st Embodiment.

  As shown in FIG. 11, the vent pipe 110 is a tube-shaped member formed of a transparent and flexible material, and has a first attachment portion 114 that is inserted into the first vent hole 45 and attached to one end. A second attachment portion 116 that is provided and attached to the other end by being inserted into the second ventilation hole 47 is provided. The first mounting portion 114 and the second mounting portion 116 have the same configuration, and are configured by members that project from the outer peripheral surface of the vent pipe 110 outward in an umbrella shape. The first attachment portion 114 and the second attachment portion 116 are formed with cuts (not shown) along the axial direction of the vent pipe 110.

  Here, in FIG. 11, as an example, the position of the first ventilation hole 45 and the position of the second ventilation hole 47 do not coincide with each other in the vertical direction, and are configured to be shifted in the horizontal direction. The length in the axial direction is longer than the length in the vertical direction of the opening width of the insertion port 49A and the opening 49B (see FIG. 10), and the first mounting portion 114 and the second mounting portion 116 are in the first direction. Since the length is such that it can be bent while being inserted into the air holes 45 and the second air holes 47, the air pipe 110 can be attached to the first air holes 45 and the second air holes 47.

  Next, the operation of the second embodiment will be described.

  First, the construction method of the heat insulation part 100 is demonstrated.

  As shown in FIG. 12A, the first outer wall frame 44 is fastened to the ceiling beam 16A with bolts 48 and nuts 50 to fix the outer wall member 42A. Similarly, the second outer wall frame 46 is fastened to the floor large beam 22B with bolts 48 and nuts 50, and the outer wall member 42B is fixed. The heat insulating materials for beams 54A and 54B are already installed.

  Subsequently, as shown in FIGS. 12A and 12B, the first outer wall frame 44 and the second outer wall frame 46 are opened from the opening 49 </ b> B and the insertion port 49 </ b> A on the second attachment portion 116 side while bending the vent pipe 110. Insert between. And the 2nd attachment part 116 is penetrated to the 2nd ventilation hole 47 (refer FIG. 3). Here, the second attachment portion 116 is inserted into the second ventilation hole 47 in a state in which the umbrella-shaped portion is disposed along the outer peripheral surface of the ventilation pipe 110, and then spreads again in the shape of an umbrella. 46 is in contact with the top surface of the ceiling wall 46A of the wall 46 to prevent one end of the vent pipe 110 from coming off.

  Subsequently, as shown in FIG. 12C, the first attachment portion 114 side is inserted between the first outer wall frame 44 and the second outer wall frame 46 through the opening 49B and the insertion port 49A. And the 1st attaching part 114 is penetrated to the 1st ventilation hole 45 (refer FIG. 3). Here, the first attachment portion 114 is inserted into the first vent hole 45 in a state in which the umbrella-shaped portion is disposed along the outer peripheral surface of the vent pipe 110, and then spreads in an umbrella shape again. 44 is in contact with the lower surface of the bottom wall 44 </ b> A to prevent the other end of the vent pipe 110 from coming off. In addition, illustration of the filling heat insulating material 58 is abbreviate | omitted in FIG.12 (C).

  By performing these steps on the other ventilation pipes 110 as well, a plurality of ventilation pipes 110 are provided between the first outer wall frame 44 and the second outer wall frame 46. Further, since the vent pipe 110 is provided, the air flowing from the vent layer 56 on the first floor to the first vent hole 45 flows into the vent pipe 110 and flows upward in the vent pipe 110, so that the second vent hole is provided. It flows from 47 to the ventilation layer 56 on the second floor. Thereby, the ventilation layer 56 of the 1st floor and the 2nd floor communicate.

  Subsequently, after the plurality of vent pipes 110 are provided, the filling heat insulating material 58 (see FIG. 10) is filled between the first outer wall frame 44 and the second outer wall frame 46 from the opening 49B and the insertion port 49A. . The filling heat insulating material 58 is filled into the indoor side through the plurality of ventilation pipes 110, and is filled between the ceiling beam 16A and the floor beam 22B. In addition, since the vent pipe 110 is a transparent member, it can be filled while confirming whether or not the filling heat insulating material 58 is filled between the ceiling beam 16A and the floor beam 22B.

  Then, as shown in FIG. 10, the one end part of the water stop sheet | seat 51 is affixed inside the 2nd outer wall frame 44, and the other end part of the water stop sheet | seat 51 is affixed on the surface by the side of the outer wall material 42A. Then, a decorative barrel difference 70 is attached to the peripheral edge of the opening 49B to seal the opening 49B. Thus, the heat insulation part 100 is formed.

  Next, the effect | action of the heat insulation part 100 is demonstrated.

  As shown in FIG. 10, in the heat insulating portion 100, the filling heat insulating material 58 is arranged on the indoor side and the outdoor side of the ventilation pipe 110, so that the heat transfer in the indoor and outdoor directions has two layers, indoor and outdoor. It is suppressed by the filling heat insulating material 58. Thereby, the heat insulation effect of the building 10 can be improved. Further, since the ventilation pipe 110 communicates the first ventilation hole 45 and the second ventilation hole 47, air permeability between the outer wall material 42A and the ceiling beam 16A and between the outer wall material 42B and the floor beam 22B is ensured. can do.

  Further, in the heat insulating portion 100, the flexible ventilation pipe 110 is inserted through the opening 49 </ b> B and the insertion port 49 </ b> A in a bent state, and is provided between the first outer wall frame 44 and the second outer wall frame 46. Therefore, the length (size) of the opening width of the insertion port 49A and the opening 49B can be set shorter than the length (size) of the vent pipe 110. Thereby, even when the foaming filled heat insulating material 58 is filled, the filled heat insulating material 58 becomes difficult to jump out from the insertion port 49A. And since the opening width of the opening part 49B becomes short, the width | variety of the cosmetic cylinder difference 70 which covers the opening part 49B can be made small, and the weight reduction of the cosmetic cylinder difference 70 is attained.

  Further, in the heat insulating portion 100, the vent pipe 110 has a configuration in which one end is inserted and attached to the first vent hole 45 and the other end is inserted and attached to the second vent hole 47, so that the central portion is deformed. It is possible. Thereby, for example, even after the building 10 is horizontally displaced due to an earthquake, the first attachment portion 114 and the second attachment portion 116 can be prevented from being detached from the first ventilation hole 45 and the second ventilation hole 47. And since the communication state of the 1st ventilation hole 45 and the 2nd ventilation hole 47 is maintained, the air permeability between outer wall material 42A, 42B, ceiling girder 16A, and floor girder 22B is securable.

  In addition, since the ventilation pipe 110 is transparent in the heat insulating part 100, the gap between the first outer wall frame 44 and the second outer wall frame 46 is filled with the filling heat insulating material 58 from the opening 49B and the insertion port 49A at the construction site. Since the gap between the ceiling beam 16A and the floor beam 22B is visually recognized through the ventilation pipe 110, it can be visually confirmed whether or not the filling heat insulating material 58 is filled up to the gap between the ceiling beam 16A and the floor beam 22B. .

  In addition, this invention is not limited to said embodiment.

  As shown in FIG. 13, in the building 10 and the heat insulating portion 20 of the first embodiment, the filling heat insulating material 58 is not filled between the ceiling beam 16A and the floor beam 22B, and the second floor is placed on the first floor building unit 12A. When the building unit 12B is disposed, the heat insulating material 124 may be sandwiched in advance. In addition, although the filling heat insulating material 58 is filled between the 1st outer wall frame 44 and the 2nd outer wall frame 46, illustration of the filling heat insulating material 58 is abbreviate | omitted in FIG.

  As shown in FIG. 13 and FIG. 14, the heat insulating material 124 is a shape in which a single heat insulating material is erected in the vertical direction, and the upper end and the lower end are bent at right angles so as to be opposite in the horizontal direction. It has become. And the lower end part of the heat insulating material 124 is mounted on the heat insulating material 122 spread | laid on the ceiling material 38A. As shown in FIG. 14, the convex portion 126 is formed on the ceiling beam 16A, and the size is adjusted to the outer shape of the convex portion 126 at the upper end portion of the heat insulating material 124 (the portion placed on the upper surface of the ceiling beam 16A). It is possible to prevent the heat insulating material 124 from shifting by forming a notch 124A and engaging the protrusion 126 and the notch 124A.

  Here, as shown in FIGS. 15 (A) and 15 (B), the heat insulating material 124 is placed on the ceiling girder 16A, and the floor girder 22B is lowered toward the ceiling girder 16A. It is sandwiched between the floor beams 22B. In FIGS. 15A and 15B, illustration of the heat insulating member 82, the first outer wall frame 44, and the second outer wall frame 46 is omitted.

  Moreover, the ventilation spacer 60 of 1st Embodiment may form the wide part 66A, 66B in a bellows shape, and may improve the adhesiveness with the 1st outer wall frame 44 and the 2nd outer wall frame 46. FIG. Furthermore, the order of insertion of the widened portions 66A and 66B between the first outer wall frame 44 and the second outer wall frame 46, or the order of insertion of the first attachment portion 114 and the second attachment portion 116 is the reverse of the embodiment. It may be.

  In the first embodiment, the widened portions 66A and 66B are provided on both the lower end and the upper end of the cylindrical portion 62 of the ventilation spacer 60. However, the widened portions 66A and 66B may be provided on either the lower end or the upper end of the cylindrical portion 62. Good. For example, the widened portion 66A is provided at the lower end of the cylindrical portion 62, the second mounting portion 116 is provided at the upper end, and the second mounting portion 116 is inserted into the second ventilation hole in a state where the ventilation spacer 60 is erected using the widened portion 66A. May be. On the other hand, in the configuration in which the widened portion 66B is provided at the upper end of the cylindrical portion 62 and the first attachment portion 114 is provided at the lower end, the engaging portion where the second outer wall frame 46 and the widened portion 66B are engaged is the second outer wall frame 46, widened. It forms in the part 66B. And after attaching the wide part 66B to the 2nd outer wall frame 46 using this engaging part, you may insert the 1st attaching part 114 in a 1st ventilation hole.

10 Building 16A Ceiling girder (an example of a ceiling beam)
20 Heat insulation part (an example of a heat insulation structure of a building)
22B Floor girder (an example of a floor beam)
42A exterior wall material (example of exterior walls on lower floor)
42B Outer wall material (an example of an outer wall on the upper floor)
44 1st outer wall frame (an example of 1st support member)
45 1st ventilation hole 46 2nd outer wall frame (an example of 2nd support member)
47 2nd ventilation hole 49A Insertion opening 58 Filling heat insulating material (an example of heat insulating material)
60 Ventilation spacer (example of ventilation member)
62 Cylinder 62A Ventilation path 62B Ventilation path 62C Ventilation path 64A Filling hole 64B Filling hole 66A Widening part 66B Widening part 100 Thermal insulation part (an example of a thermal insulation structure of a building)
110 Ventilation pipe (an example of ventilation member)
114 1st attachment part 116 2nd attachment part

Claims (6)

A first vent hole communicating with a gap between the outer wall of the lower floor and the ceiling beam of the lower floor is formed, one end is fixed to the outer wall of the lower floor, and the other end is attached to the ceiling beam of the lower floor. A first support member for supporting the outer wall of
A second ventilation hole communicating with a gap between the outer wall of the upper floor and the floor beam of the upper floor is formed, is disposed to face the first support member, and has one end fixed to the outer wall of the upper floor and the other end. A second support member attached to the upper floor beam and supporting the outer wall of the upper floor;
A heat insulating material filled between the first support member and the second support member;
One end contacts the first support member, the other end contacts the second support member, and is sandwiched between the indoor side and the outdoor side by the heat insulating material, and the first vent hole and the second vent hole A ventilation member that communicates with
Building insulation structure.   The ventilation member has flexibility, and is formed by an upper end of the first support member and a lower end of the second support member. The heat insulating structure for a building according to claim 1, wherein the ventilation member is shorter than a vertical length of the ventilation member. The ventilation member is
A cylindrical portion opened in the vertical direction;
A filling hole that penetrates the tube portion in the horizontal direction and divides the tube portion into a plurality of ventilation paths and is filled with the heat insulating material;
A widened portion that is widened in at least one of the upper end and the lower end of the cylindrical portion in the horizontal direction and covers at least one of the first vent hole and the second vent hole;
The heat insulating structure for a building according to claim 1 or 2, wherein The ventilation member is
2. A vent pipe provided with a first attachment portion that is inserted into and attached to the first vent hole at one end and a second attachment portion that is inserted and attached into the second vent hole at the other end. Or the heat insulation structure of the building of Claim 2.   The heat insulation structure of a building according to any one of claims 1 to 4, wherein the ventilation member is a transparent member that allows a gap between the ceiling beam and the floor beam to be seen from the insertion port. .   The heat insulating structure for a building according to any one of claims 1 to 5, wherein the heat insulating material is also filled in a gap between the ceiling beam and the floor beam.

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