JP7094773B2 - Opening structure of external insulation frame - Google Patents

Description

The present invention relates to an opening structure of an external heat insulating skeleton in which a heat insulating portion is provided on the outer surface of the outer wall of a building.

The sash provided in the skeleton of the building is provided inside the opening formed in the skeleton. A drainer is provided in the lower frame of the opening to prevent rainwater or the like from entering the inside of the building through the gap between the sash and the opening.
For example, in Patent Document 1, a fixing vertical piece fixed to a base rail provided on an outer wall, a draining inclined piece extending diagonally forward and downward from the lower end of the fixing vertical piece, and a draining inclined piece downward from the tip of the draining inclined piece. Disclosed is a draining material provided with a draining piece erected toward it.
In the draining material as disclosed in Patent Document 1, when snow is accumulated on the draining inclined piece, even if the draining inclined piece is inclined, the snow tends to remain accumulated on the draining inclined piece. This is because in a low temperature environment where it snows, the drainer drops to a temperature equivalent to that of the outside air, and the snow on the drainer slope piece is difficult to melt. In addition, rainwater or the like may sneak into the back side of the draining material from the lower member end of the draining piece of the draining material and permeate into the outer wall side.

Further, in Patent Document 2, a skeleton fixing piece provided on the indoor side of the lower surface of the lower frame of the sash, a contact portion provided on the lower surface of the lower frame of the sash, and an outdoor side of the contact portion are provided. Disclosed is a sash having a draining portion that is inclined downward and protrudes to the outdoor side, and an outdoor locking piece that is provided on the upper surface of the draining portion and engages with a locked portion provided on a lower frame. ing.
Even in a sash as disclosed in Patent Document 2, when snow is accumulated on the draining portion, the temperature of the draining portion is lowered to the same temperature as the outside air, and the snow tends to remain accumulated on the draining portion. In addition, rainwater or the like may sneak around from the lower member end of the draining portion to the back side of the draining portion and permeate into the outer wall side.

Further, Patent Document 3 includes an indoor side mounting portion fixed to the lower surface of the lower frame of the sash and an outdoor mounting portion located in the lower frame recess formed in the lower frame, and includes an outdoor side of the lower frame. A drainer overhanging the outside of the room from the edge is disclosed.
Even in a drainer as disclosed in Patent Document 3, when snow accumulates on the drainer, the temperature of the drainer drops to the same temperature as the outside air, and the snow tends to remain accumulated on the drainer. In addition, rainwater or the like may sneak into the back side of the drainer from the end of the lower member of the drainer and permeate into the outer wall side.

Japanese Unexamined Patent Publication No. 2001-123546 Japanese Unexamined Patent Publication No. 2009-12115 Japanese Unexamined Patent Publication No. 2016-113771

The problem to be solved by the present invention is the opening structure of the external heat insulating skeleton that suppresses snow accumulation around the lower frame portion of the opening provided in the external heat insulating skeleton of the building and prevents rainwater from entering from around the opening. Is to provide.

As an opening structure provided in the outer heat insulating frame of the building, the present inventors attach a dew condensation prevention material to the inner surface of the drainer, and fill the corner portion between the drainer and the outer wall of the building with the heat insulating material. By securing a double heat blocking layer (insulation layer), the inside of the building on the back side of the drainer is maintained at a high temperature, a high temperature difference from the surface temperature of the drainer is realized, and the drainer is used. By setting the gradient of 30 to 60 degrees, we focused on the point that the snow does not stay on the outer surface of the drainer even when it snows, and we have reached the present invention.
The present invention employs the following means in order to solve the above problems.
That is, the opening structure of the outer heat insulating frame of the present invention is an outer heat insulating structure in which a heat insulating portion is provided on the outer surface of the outer wall of the building, the opening provided in a part of the outer wall of the building and the outer wall of the building from the opening. It is provided with a drainage material having a folded plate portion inclined to the lower outer side of the outside, and a heat insulating material provided between the drainage material and the outer wall of the building and covered with the drainage material. The upper member end is attached to the lower frame portion of the opening, the folded plate portion is folded back toward the building outer wall, and the lower member end is fixed to the building outer wall or the heat insulating material below the opening. The heat insulating material is characterized in that it is filled up to the innermost part of the closed space between the drainage material and the outer wall of the building.
According to such a configuration, the heat insulating material is filled up to the innermost part of the closed space between the drainer provided along the lower frame portion of the opening and the outer wall of the building, thereby creating the closed space. It can be a heat insulating layer (heat blocking layer). This prevents the drainer from reaching a temperature equivalent to the outside air temperature during snowfall, prevents snow from accumulating on the outer surface of the drainer, and melts the snow adhering to the outer surface of the drainer to melt the folded plate. It can be quickly dropped downward along the portion. Therefore, it is possible to prevent the snow accumulated on the outer surface of the drainer from melting and invading the inside of the building. In addition, the folded plate part of the drainer is folded back toward the outer wall of the building, and the end of the lower member is fixed to the outer wall of the building or the heat insulating material. The end of the member can be firmly supported.

In one aspect of the present invention, in the opening structure of the external heat insulating skeleton of the present invention, the folded plate portion has a gradient of 30 to 60 degrees with respect to the horizontal plane.
According to such a configuration, since the folded plate portion of the drainer has a gradient of 30 to 60 degrees, rainwater and snow can be quickly dropped downward without staying on the folded plate portion. And can prevent rainwater from penetrating into the building.

In one aspect of the present invention, in the opening structure of the external heat insulating skeleton of the present invention, a dew condensation prevention material is attached to the inner surface of the folded plate portion.
According to such a configuration, the dew condensation preventing material is attached to the inner surface of the draining material, so that the dew condensation preventing material and the heat insulating material are provided in two layers between the draining material and the outer wall of the building. become. As a result, it is possible to further prevent the drainer from reaching a temperature equivalent to the outside air temperature during snowfall. Therefore, it is possible to prevent the snow accumulated on the outer surface of the drainer from melting and invading the inside of the building.

According to the present invention, it is possible to suppress snow accumulation around the lower frame portion of the opening provided in the external heat insulating frame of the building and prevent rainwater from entering from around the opening.

It is sectional drawing which shows the structure of the opening structure of the external insulation frame in this embodiment. It is a top view which shows the structure of the opening structure shown in FIG. It is a partial perspective view around the draining material of the opening structure shown in FIG.

In the present invention, as an opening structure provided in the outer heat insulating frame of a building, a dew condensation prevention material is attached to the inner side surface of the drainage material, and a heat insulating material is filled in the corner portion between the drainage material and the outer wall of the building. It is an opening structure of an external heat insulating skeleton that has a heavy heat blocking layer (heat insulating layer). Further, the main features of the present invention are (1) that the corner portion between the drainer material constituting the opening and the outer wall of the building is filled with a heat insulating material, and (2) the gradient of the drainer material is 30 to 30 to. At 60 degrees, (3) a dew condensation prevention material is attached to the inner surface of the drainer, a heat insulating layer is provided on the inner surface of the drainer, and between the drainer and the outer wall of the building. The point is that a heat insulating layer is provided.
Hereinafter, a mode for carrying out the opening structure of the external heat insulating skeleton according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a cross-sectional view showing the structure of the opening structure of the external heat insulating frame in the present embodiment. A sectional view taken along the line AA of FIG. 1 is shown in FIG. FIG. 3 shows a perspective view of the opening structure shown in FIG. 1 when viewed from the outdoor side of the building.
As shown in FIG. 1, the external heat insulating skeleton 1 constituting the building is provided with an opening 3 in a part of the building outer wall 1w. The building outer wall 1w is made of, for example, a reinforced concrete structure. In the building outer wall 1w, the top surface 1t located below the opening 3 is from the inside of the building (right side of the paper in FIG. 1, right side of the paper in FIG. 2) to the outside (left side of the paper in FIG. 1, left side of the paper in FIG. 2). Gradually tilts downward toward.
A sash 4 is provided in the opening 3. The sash 4 is made of an aluminum alloy or the like, and includes an outer frame 41 provided in the opening 3 and a sash main body 42 provided inside the outer frame 41. The space between the lower frame portion 41b of the outer frame 41 and the top end surface 1t of the building outer wall 1w is closed by the mortar 43.
Further, in the lower frame portion 41b of the outer frame 41, a spacer 44 having a rectangular cross section is attached to the lower surface of the outer lower frame portion 41bs located outside the building with respect to the mortar 43. A seal packing 45 is attached between the spacer 44 and the top end surface 1t of the building outer wall 1w from a rubber-based material or the like.

The building outer wall 1w has an external heat insulating structure by providing a heat insulating portion 2 along the outer surface 1s facing the outside of the building. The heat insulating portion 2 includes a panel-shaped heat insulating member 21 provided along the outer surface 1s of the building outer wall 1w, and a heat insulating material 22 described later. The heat insulating member 21 includes an EPS (Expanded Polystyrene) panel or the like, and has a predetermined thickness. The heat insulating member 21 is fixed to the outer surface 1s of the building outer wall 1w via a cement-based adhesive 23 or the like. The heat insulating member 21 is provided with a weather resistant finishing layer 24 on the side opposite to the side facing the outer surface 1s. The heat insulating member 21 attached to the building outer wall 1w below the opening 3 is provided so that the upper end portion 21t thereof is located below the top end surface 1t by a predetermined dimension.
As shown in FIG. 2, the heat insulating member 21 and the finishing layer 24 are provided around the opening 3 other than the lower side.
In FIG. 3, the heat insulating member 21 and the finishing layer 24 are provided only on the lower side of the opening 3, the heat insulating member 21 and the finishing layer 24 are not provided on the left and right sides, and the building outer wall 1w is exposed. The state of becoming is shown.

A drainer 5 is provided on the lower side of the opening 3. The drainer 5 is continuous in the horizontal direction (direction orthogonal to the paper surface of FIG. 1) parallel to the building outer wall 1w. The drainer 5 has a folded plate portion 51. The folded plate portion 51 integrally includes an inclined portion 52 that inclines downward from the opening 3 to the outside of the building outer wall 1w, a hanging portion 53 that hangs vertically downward from the lower end of the inclined portion 52, and a folded portion 56. is doing.
The inclined portion 52 of the folded plate portion 51 is formed so that the inclination with respect to the horizontal plane is θ = 30 to 60 degrees. According to such a configuration, since the inclined portion 52 of the folded plate portion 51 has an inclination of θ = 30 to 60 degrees, rainwater and snow do not stay on the folded plate portion 51 and are swiftly lowered. Drop it to the side to prevent rainwater from penetrating into the building.
The folded-back portion 56 is folded back from the lower end of the hanging portion 53 toward the building outer wall 1w.

The drainer 5 is integrally provided with an upper member end 55 on the upper side of the inclined portion 52 of the folded plate portion 51. The upper member end 55 extends vertically upward from the horizontal extending portion 54 extending inward of the building from the upper end of the inclined portion 52, and is provided along the side surface of the spacer 44. The upper member end 55 is fixed to the lower frame portion 41b provided in the opening 3 by being fastened to the side surface of the spacer 44 by a screw 61.
The outer lower frame portion 41bs of the lower frame portion 41b of the outer frame 41 projects to the outside of the building from the spacer 44, and a seal packing is provided between the outer lower frame portion 41bs and the horizontal extending portion 54 of the drainer 5. 58 is provided and covers the screw 61 and the upper member end 55 from the outside of the building. The seal packing 58 prevents rainwater and the like from entering from the outside through the insertion hole (not shown) of the screw 61 formed at the end 55 of the upper member.

Further, the drainer 5 has a lower member end 57 extending vertically downward from the inner end of the folded portion 56 inside the building. The lower member end 57 is fixed to the building outer wall 1w below the opening 3 via the bracket 70 and the stay 71. The bracket 70 has an L-shaped side cross section, and integrally has a vertical piece portion 70a along the lower member end 57 and a horizontal piece portion 70b extending horizontally from the lower end of the vertical piece portion 70a to the building outer wall 1w side. There is. The bracket 70 is continuous in the horizontal direction (direction orthogonal to the paper surface of FIG. 1) parallel to the building outer wall 1w. The vertical piece portion 70a of the bracket 70 is fastened to the lower member end 57 via a screw 62.
A plurality of stays 71 are provided at intervals in a direction in which the brackets 70 are continuous (direction orthogonal to the paper surface of FIG. 1). The tip portion 71a of each stay 71 extends along the upper surface of the upper end portion 21t of the heat insulating member 21 provided on the lower side of the opening 3, and is joined to the horizontal piece portion 70b of the bracket 70 by welding, rivets, screws, or the like. ing. The base end portion 71b of the stay 71 extends downward along the building outer wall 1w and is fixed to the building outer wall 1w by an anchor screw 63 or the like.
Further, a seal packing 59 is provided between the folded-back portion 56 of the drainer 5 and the upper end portion 21t of the heat insulating member 21 on the lower side of the opening 3, and the screw 62 and the lower member end 57 are separated from the outside of the building. Covering. The seal packing 59 suppresses rainwater or the like from entering through an insertion hole (not shown) of a screw 62 formed at the lower member end 57 from the outside.

In the draining material 5, the dew condensation prevention material 6 is attached to the inner side surface 5g facing the inside of the building (the building outer wall 1w side). The dew condensation prevention material 6 is formed by spraying, for example, a glite (registered trademark) material with a predetermined thickness.

Further, on the lower side of the opening 3, the upper end 21t of the heat insulating member 21 provided on the lower side of the opening 3, the upper end of the building outer wall 1w, the seal packing 45, and the outer lower frame portion of the outer frame 41. A closed space S is formed between the 41 bs (spacer 44 provided in the drainer 44) and the drainer 5. Further, the closed space S is entirely filled with the heat insulating material 22. The heat insulating material 22 is provided in the innermost portion S2 of the closed space S between the draining material 5 and the building outer wall 1w, that is, in the horizontal extending portion 54 of the draining material 5 and the outer lower frame portion 41bs of the outer frame 41. In the space below the spacer 44 provided, the space up to the seal packing 45 is filled. Such a heat insulating material 22 is formed, for example, by filling with urethane foam.

The opening structure of the external heat insulating skeleton in the present embodiment includes a building outer wall 1w including an opening of a sash 4 provided in the external heat insulating skeleton, a draining material 5 provided outside the opening of the sash 4, and a draining material 5. It is provided with a heat insulating material 22 between the building and the outer wall 1w of the building. That is, the opening structure of the external heat insulating skeleton 1 is an outer portion of the building including the opening, and as described above, the heat insulating member 21 is installed on one surface around the opening on the outside of the building outer wall 1w. ing.

The effects of this embodiment will be described below.
In the above configuration, by filling the heat insulating material 22 between the draining material 5 and the building outer wall 1w, it is possible to prevent the draining material 5 from dropping to the same temperature as the outside air during snowfall or the like. Be done. In particular, the heat insulating material 22 has high heat insulating properties because it is filled up to the innermost portion S2 of the closed space S between the draining material 5 and the building outer wall 1w. Further, since the dew condensation preventing material 6 is provided on the inner side surface 5g of the draining material 5, dew condensation is suppressed on the inner side surface 5g, and the temperature drop due to the dew condensation water is also suppressed. In addition, the dew condensation preventing material 6 and the heat insulating material 22 form a two-layer heat insulating layer, and the heat insulating property thereof is further enhanced. Further, the lower part of the heat insulating material 22 filled inside the draining material 5 is in a form of being closed by the upper end portion 21t of the heat insulating member 21, which also enhances the heat insulating property of the heat insulating material 22. ..
In this way, the heat insulating property of the sealed space S between the draining material 5 and the building outer wall 1w is enhanced, so that the heat insulating material 22 on the inner side surface 5g side of the draining material 5 on the outer side surface 5f side is enhanced. The temperature is higher. As a result, the temperature of the drainer 5 itself becomes higher than that of the outside air, and the snow adhering to the drainer 5 tends to melt.
Further, since the draining material 5 is provided with the inclined portion 52 on the folded plate portion 51, the snow (water) that has adhered to and melted on the draining material 5 quickly flows down along the inclined portion 52. Further, the flowing water flows vertically downward along the hanging portion 53 of the folded plate portion 51, and falls vertically downward from the lower end of the hanging portion 53. At this time, since the folded-back portion 56 folded back from the lower end of the hanging portion 53 toward the building outer wall 1w is formed, it is difficult for water to enter the building outer wall 1w side.
Further, seal packings 58 and 59 are provided between the horizontal extending portion 54 of the drainer 5 and the lower frame portion 41b of the sash 4, and between the folded portion 56 and the upper end portion 21t of the heat insulating member 21. Therefore, it is difficult for water or the like to enter the building side from these parts.
Further, the top end surface 1t of the building outer wall 1w gradually inclines downward from the inside (right side of the paper surface in FIG. 1) to the outside (left side of the paper surface in FIG. 1). As a result, when dew condensation water or water from the outside infiltrates between the top end surface 1t of the building outer wall 1w and the lower frame portion 41b of the sash 4, this water can be quickly guided to the outside of the building.

According to the opening structure of the outer heat insulating skeleton 1 as described above, in the outer heat insulating structure in which the heat insulating portion 2 is provided on the outer surface 1s of the building outer wall 1w, the opening 3 provided in a part of the building outer wall 1w and the opening A drainage material 5 having a folded plate portion 51 inclined to the outer lower side of the building outer wall 1w from the portion 3, and a heat insulating material 22 provided between the drainage material 5 and the building outer wall 1w and covered with the drainage material 5. , Equipped with. The upper member end 55 of the folded plate portion 51 is attached to the lower frame portion 41b of the opening 3, the folded portion 56 is folded back toward the building outer wall 1w, and the lower member end 57 is attached to the building outer wall 1w below the opening 3. It is fixed. Further, the heat insulating material 22 is filled up to the innermost portion S2 of the closed space S between the draining material 5 and the building outer wall 1w.
According to such a configuration, the heat insulating material 22 is filled up to the innermost part of the closed space S between the draining material 5 provided along the lower frame portion 41b of the opening 3 and the building outer wall 1w. As a result, the closed space S can be used as a heat insulating layer (heat blocking layer). As a result, it is possible to prevent the drainer 5 from reaching a temperature equivalent to the outside air temperature during snow accumulation, to prevent snow from accumulating on the outer surface 5f of the drainer 5, and to prevent snow from accumulating on the outer surface 5f of the drainer 5. Can be melted and quickly dropped downward along the folded plate portion 51. Therefore, it is possible to prevent the snow accumulated on the outer surface 5f of the drainer 5 from melting and invading the inside of the building. Further, the folded plate portion 51 of the drainer 5 is folded back toward the building outer wall 1w, and the lower member end 57 is fixed to the building outer wall 1w to prevent seepage water from wrapping around from the lower member end 57 of the drainer 5. At the same time, the lower member end 57 can be firmly supported.
Therefore, it is possible to suppress snow accumulation around the lower frame portion 41b of the opening 3 provided in the external heat insulating frame 1 of the building and prevent rainwater from entering from around the opening 3.

In the opening structure of the external heat insulating skeleton 1, the folded plate portion 51 has a gradient of 30 to 60 degrees with respect to the horizontal plane. According to such a configuration, since the folded plate portion 51 of the drainer 5 has a gradient of 30 to 60 degrees, rainwater and snow do not stay on the folded plate portion 51 and are swiftly moved downward. It can be dropped and prevent rainwater from penetrating into the building.

In the opening structure of the outer heat insulating skeleton 1, the dew condensation prevention material 6 is attached to the inner side surface 5 g of the folded plate portion 51. According to such a configuration, the dew condensation preventing material 6 is attached to the inner side surface 5g of the draining material 5, so that the dew condensation preventing material 6 and the heat insulating material 22 are sandwiched between the draining material 5 and the building outer wall 1w. Will be provided in two layers. As a result, it is possible to further prevent the drainer 5 from reaching a temperature equivalent to the outside air temperature during snowfall. Therefore, it is possible to prevent the snow accumulated on the outer surface 5f of the drainer 5 from melting and invading the inside of the building.

(Modified example of the embodiment)
The opening structure of the external heat insulating frame of the present invention is not limited to the above-described embodiment described with reference to the drawings, and various modifications can be considered within the technical scope thereof.
For example, in the above embodiment, the lower member end 57 of the drainer 5 is fixed to the building outer wall 1w below the opening 3 via the bracket 70 and the stay 71, but the lower member end 57 is opened. It may be fixed to the heat insulating material 22 below the portion 3.
In addition to this, as long as it does not deviate from the gist of the present invention, it is possible to select the configuration described in the above embodiment or change it to another configuration as appropriate.

1 External heat insulating frame 21 Insulation member 1s Outer surface 22 Insulation material 1w Building outer wall 41b Lower frame part 2 Insulation part 51 Folded plate part 3 Opening part 55 Upper member end 4 Sash 56 Folded part 5 Draining material 57 Lower member end 5g Inner side surface S Sealed Space 6 Dew condensation prevention material S2 Innermost part

Claims (3)

In an external heat insulating structure in which a heat insulating part is provided on the outer surface of the outer wall of a building
An opening provided in a part of the outer wall of the building and
A drainer having a folded plate portion that slopes downward from the opening to the outside of the outer wall of the building.
A heat insulating material provided between the drainer and the outer wall of the building and covered with the drainer,
A panel-shaped heat insulating member provided along the outer surface of the building outer wall below the opening, and
Equipped with
The upper member end of the folded plate portion is attached to the lower frame portion of the opening, the folded plate portion is folded back toward the building outer wall, and the lower member end is the building outer wall or the heat insulating material below the opening. The lower member end is located above the upper end of the heat insulating member .
The heat insulating material fills the entire enclosed space formed between the draining material and the outer wall of the building so as to be closed by the upper end portion of the heat insulating member up to the innermost part. The opening structure of the external insulation skeleton, which is characterized by the fact that it is. The folded plate portion has a gradient of 30 to 60 degrees with respect to the horizontal plane .
The opening structure of the external heat insulating skeleton according to claim 1, wherein a dew condensation prevention material is attached to the inner surface of the folded plate portion . The folded plate portion has an inclined portion inclined from the opening to the outer lower side of the outer wall of the building, a hanging portion vertically downward from the lower end of the inclined portion, and the lower end of the hanging portion toward the outer wall of the building. With a folded part that is folded back,
The lower member end is formed so as to extend vertically downward from the end portion of the folded portion, and is fixed to the building outer wall via a bracket and a stay extending along the upper end portion of the heat insulating member.
The opening structure of an external heat insulating skeleton according to claim 1 or 2 , wherein a seal packing is provided between the folded portion and the upper end portion of the heat insulating member .

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