JP4020825B2 - outer wall - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an outer wall of a building, and more particularly to an outer wall having an improved packing structure inserted into a gap between an upper end portion of an outer wall material and an eaves ceiling.
[0002]
[Prior art]
In recent outer walls, a ventilation method for attaching an outer wall material to a wall portion of a building frame via a ventilation layer has become mainstream. Thus, when attaching an outer wall material through a ventilation layer, the waterproof seal | sticker is generally given to the clearance gap (joint part) between the upper end part of an outer wall material, and an eaves ceiling later.
[0003]
As a method of applying this seal, there is a wet joint method (also referred to as a sealing joint method) in which the gap is filled with a fluid sealing material. In this wet joint method, as shown in FIG. 6, a backup material 101 is arranged in advance at the back of the gap 7 between the upper end 4 c of the outer wall material 4 and the eaves ceiling 45, and a void is provided on the front side thereof. The sealing material 102 is filled from the outdoor side and solidified.
[0004]
As another seal construction method, there is a dry joint method (gasket method) in which an elastic packing (gasket) is inserted into the gap.
[0005]
[Problems to be solved by the invention]
By the way, the above-mentioned wet joint method has a problem that due to the deterioration of the sealing material over time, the adhesion surface peels off and the material breaks down, resulting in a decrease in airtightness and watertightness. is there. In addition, the construction of the sealing material requires skill and costs.
[0006]
On the other hand, the dry joint method in which the packing is inserted into the joint part can almost eliminate the problems of the wet joint method, but when the eaves ceiling has a slope, the gap between the outer wall material and the eaves ceiling Since it is narrow on the outdoor side and becomes wider toward the indoor side, the inserted gasket may be buried inside. Therefore, there is a problem that it is difficult to apply in the case of an eave ceiling with a gradient, and in the case of an eave ceiling with a gradient, the current situation is that it relies on a wet joint method.
[0007]
The present invention has been made in consideration of the above circumstances, and it is possible to easily and surely implement a dry joint method even in the case of a sloped eave ceiling, and an outer wall that can solve the problems of the wet joint method. The purpose is to provide. That is, an object of the present invention is to provide an outer wall that can easily and reliably attach a highly airtight and watertight packing to a gap between an eaves ceiling and an outer wall material, and can improve workability.
[0008]
[Means for Solving the Problems]
The present invention is an outer wall in which an outer wall member is attached to a wall portion of a building frame via a ventilation layer, and a packing is inserted into a gap between an upper end portion of the outer wall member and an eaves ceiling, and the packing includes the gap A main body portion that is inserted from the outdoor side and supported by the upper end portion of the outer wall material, and a locking portion that projects downward from the outdoor side end portion of the main body portion and is locked to the upper end outer surface of the outer wall material, At least 2 projecting upward from the upper surface portion of the main body portion with an interval in the insertion direction, elastically deforming to the outdoor side as the packing is inserted into the gap, and each tip side is in pressure contact with the lower surface of the eaves ceiling A plurality of outdoor-side and indoor-side airtight piece portions, and the contact points of the outdoor-side airtight piece portion and the indoor-side airtight piece portion with respect to the lower surface of the eaves ceiling are connected to the eaves from the upper-end outer surface corner of the outer wall material. It is located on the outdoor side and indoor side across the vertical line drawn on the ceiling
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0010]
FIG. 1 shows the main configuration of the embodiment, and FIG. 2 shows the overall configuration. 1 and 2, reference numeral 1 denotes an outer wall, and the outer wall 1 includes an outer wall material 4 attached to a wall portion 3 of a building housing 2. 45 is an eave ceiling with a slope, and a gap (joint portion) 7 is provided between the eave ceiling 45 and the upper end portion 4c of the outer wall member 4 so that the interval increases from the outdoor side toward the indoor side. A packing (gasket) 8 is inserted into the gap 7 from the outdoor side (outdoor side) as a dry joint method.
[0011]
The outer wall material 4 is made of a ceramic-type exterior material (siding) such as tiles and bricks, and is formed in a panel shape having a predetermined dimension (for example, 450 mm × 2700 mm in length and width). As a method of attaching the outer wall material 4, there are a vertical stretch attached in a vertically long state and a horizontal stretch attached in a horizontally long state, but any method may be used. Also. The outer wall material 4 may be a metal panel.
[0012]
As shown in FIG. 2, a concave portion 15 having a thickness from approximately the middle in the thickness direction to the outer surface and a convex portion 16 having a thickness from approximately the middle in the thickness direction to the back surface are formed on the upper end portion of the outer wall material 4. Are formed on the lower end of the outer wall member 4 with a thickness 17 from the middle in the thickness direction to the outer surface and a thickness 18 from the middle in the thickness direction to the back surface. The outer wall material 4 is stretched on the wall portion 3 of the housing 2 in a state where the concave portions 15 and 18 and the convex portions 16 and 17 are engaged with each other. Further, in the illustrated example, the lower end portion of the lower outer wall member 4 is connected to the lower outer wall member 4 and the upper outer wall member 4 via the first mounting bracket (mounting member) 20. Attached to the wall 3 of the housing 2 through the second mounting bracket (mounting member) 21 so that a ventilation layer 23 with a predetermined gap is formed between the wall 3 of the housing 2 and the outer wall material 4. It has been.
[0013]
The first mounting bracket 20 and the second mounting bracket 21 are fixed to the housing 2 with fixing tools such as nails 24. Note that the upper end portion of the upper outer wall member 4 is not formed with the concave portion 15 and the convex portion 16, and the upper end portion of the upper outer wall member 4 is connected to the wall portion 3 of the housing 2 through the ventilator edge 25. It is fixed with a nail 24. Further, a moisture permeable waterproof paper 26 is stretched on the wall 3 of the housing 2.
[0014]
The packing 8 is made of an elastically deformable rubber or soft resin, such as a thermo plastic elastomer (TPE) material, and is formed in a continuous length in a direction perpendicular to the paper surface of FIG. 1 by extrusion molding. Yes. As shown in FIG. 1, the packing 8 includes a strip-like main body portion 8 a that is inserted from the outdoor side into the gap 7 and supported so that the lower surface thereof is in contact with the upper end portion 4 c of the outer wall material 4. And has a locking portion 8b protruding downward at the rear end portion (end portion on the outdoor side) of the main body portion 8a in the insertion direction (width direction). The locking portion 8b is locked to the upper end outer surface 4a of the outer wall material 4 and thereby functions to restrict excessive insertion of the packing 8 into the indoor side.
[0015]
Further, a hooking portion 8c that prevents the packing 8 from coming off protrudes downward from a tip end portion (indoor end portion) in the insertion direction of the main body portion 8a. The hook portion 8c is a hook-shaped member having a slope 8d at the front end in the insertion direction, and when the packing 8 is inserted into the gap 7 from the outdoor side, the slope 8d hits the outer wall material 4. By being elastically bent upward and elastically restored with the completion of the insertion of the packing 8, it is caught by the upper end inner surface 4b of the outer wall material 4 and fulfills the function of preventing the packing 8 from coming off to the outdoor side. The hook portion 8c and the locking portion 8b are formed continuously in the longitudinal direction of the main body portion 8a.
[0016]
The packing 8 sandwiches the upper end portion of the outer wall material 4 in the thickness direction between the hook portions 8c and the locking portions 8b provided at the front and rear ends in the insertion direction into the gap 7, so that the packing 8 itself It is held and fixed at the upper end. Further, with the lower surface of the main body portion 8a being in surface contact with the upper end portion (upper end edge) 4c of the outer wall member 4, the hooking portion 8c and the engaging portion 8b in the front and rear direction of insertion are the indoor side and the roof of the upper end of the outer wall member 4. In addition to covering the outer corners, in particular, since the inner surface of the locking portion 8b is in close contact with the upper end outer surface 4a of the outer wall material 4, both corners of the outer wall material 4 can be protected, and the outer wall Airtightness and watertightness between the material 4 and the packing 8 can be maintained.
[0017]
Further, at least two outdoor side and indoor side airtight pieces 8e and 8f protrude upwardly on the upper surface of the main body part 8a of the packing 8 with a gap in the insertion direction of the main body part 8a. Has been. These airtight pieces 8e and 8f are elastically collapsed and deformed to the outdoor side along with the insertion of the packing 8 from the outdoor side into the gap 7 with the eaves ceiling 45, so that the side surfaces on the front end sides are It press-contacts to the lower surface of 45, and thereby defines the air layer 9 between both, and is formed continuously in the longitudinal direction of the main body 8a. The protruding lengths of these airtight pieces 8e and 8f are set to dimensions that can reliably close the gap 7 with the eaves ceiling 45 with a margin.
[0018]
The air layer 9 defined between the two airtight pieces 8e and 8f is a space for pressure reduction. By securing the air layer 9, the wind pressure on the outdoor side of the outer wall material 4 is Pa, and the outer wall Assuming that the pressure on the indoor side of the material 4 is Pc and the pressure of the air layer 9 is Pb, the wind pressure changes stepwise as Pa>Pb> Pc, so that each airtight piece 8e, 8f The pressure difference at the boundary becomes small, and rainwater can be prevented from entering the indoor side due to the pressure difference.
[0019]
Further, when a perpendicular line Ls is drawn perpendicularly from the corner A of the upper end outer surface 4a of the outer wall material 45 to the sloped eaves ceiling 45, the contact B to the eaves ceiling 45 of the outdoor side airtight piece 8e is dimensioned from the perpendicular line Ls. Only a is located on the outdoor side, the contact C to the eaves ceiling 45 of the indoor side airtight piece 8f is located on the indoor side by the dimension b from the perpendicular Ls, and the contact C is an extension line of the upper end outer surface of the outer wall material 4 The shape, position, and elasticity of the airtight pieces 8e and 8f are determined so as to be located on the indoor side by a dimension c from Lt. That is, when considering a triangle ABC having points A, B, and C as apexes, the positions of the contacts B and C are determined so that the corners B and C are acute angles.
[0020]
Therefore, the moment around the point A (counterclockwise moment in the figure) due to the force that the contact point B of the airtight piece 8e on the outdoor side presses against the eaves ceiling 45 causes the inner surface of the locking portion 8b to be the upper end outer surface of the outer wall material 4. 4a acts as a force that strongly presses against 4a, and the moment around point A (clockwise moment in the figure) due to the force that the contact C of the airtight piece 8f on the indoor side presses against the eaves ceiling 45 is the lower surface of the main body 8a. Acts as a force that strongly presses against the upper end portion 4c of the outer wall material 4, and as a result, the adhesion force of the packing 8 to the outer wall material 4 is enhanced, the airtightness and watertightness are improved, and the packing 8 is balanced and stable. Will be held. Further, when the airtight piece portions 8e and 8f are pressed against the eaves ceiling 45 with a gradient, a component force directed toward the indoor side acts on the packing 8 disposed on the upper end portion 4c of the outer wall member 4. Therefore, the packing 8 is prevented from being displaced and prevented from coming off by a balance between the component force and the locking force of the locking portion 8a.
[0021]
When the packing 8 is attached to the upper end of the outer wall member 4, as shown in FIG. 3A, the two airtight pieces 8e and 8f are placed on the outer side of the outer wall member 4 on the lower side of the eaves ceiling 45. The packing 8 is prepared with the orientation facing and the hooking portion 8c facing the outer wall material 4 side, and then, as shown in (b), the two airtight pieces 8e and 8f are bent and pushed on the lower surface of the eaves ceiling 45 While being applied, the front end of the hook portion 8 c is inserted into the gap 7 between the upper end of the outer wall material 4 and the eaves ceiling 45 in an oblique posture. At that time, the packing 8 easily enters the gap 7 while being guided to the ridge portion 8c by the guide action of the inclined surface 8d at the front end of the ridge portion 8c.
[0022]
Next, when the packing 8 is further inserted, the contact C with the eaves ceiling 45 of the airtight piece 8f on the indoor side enters the indoor side beyond the perpendicular line Ls passing through the point A described above (the position indicated by the two-dot chain line). ), An elastic reaction force of the airtight piece portion 8f that presses against the eaves ceiling 45 causes a clockwise moment in the figure to act on the packing 8, and the main body portion 8a of the packing 8 acts on the outer wall member 45 by the moment. Is pressed against the upper end 4c. At that time, the hook portion 8c slides and moves on the upper end portion 4c of the outer wall member 4 in a posture bent upward, and when the tip hook portion of the hook portion 8c exceeds the position of the upper end inner surface 4b of the outer wall member 4. The hooking portion 8c is elastically restored and hooked on the upper end inner surface 4b of the outer wall member 4, thereby preventing the packing 8 from coming off. Further, as the insertion is performed, the locking portion 8 e is locked to the upper end outer surface 4 a of the outer wall material 4 at an appropriate position, so that the packing 8 does not excessively enter the back of the gap 7.
[0023]
According to the outer wall 1 having the above-described configuration, the outer wall material 4 is attached to the wall portion 3 of the building housing 2 via the ventilation layer 23, and the gap 7 between the eaves ceiling 45 is provided at the upper end of the outer wall material 4. The packing 8 to be sealed is inserted, and the packing 8 engages with the band plate-shaped main body portion 8a that abuts on the upper end portion 4c of the outer wall member 4 and the upper end outer surface 4a of the outer wall member 4 to enter the packing 8 toward the indoor side. Is elastically pressed against the eaves ceiling 45, a locking portion 8b that restricts excessive insertion of the outer wall material 4, a hook portion 8c that engages with the upper end inner surface 4b of the outer wall member 4 to prevent the packing 8 from being removed to the outdoor side. Thus, since the two airtight pieces 8e and 8f defining the air layer 9 are provided between the two, the packing 8 can be easily inserted and set at an appropriate position.
[0024]
That is, in the case of the eave ceiling 45 having a slope, the gap (joint portion) 7 between the upper end portion 4c of the outer wall material 4 and the eaves ceiling 45 becomes wider as the outer side of the outer wall material 4 becomes narrower toward the inner side. 7, the packing 8 inserted into the wall 7 is likely to enter the indoor side. However, when the packing 8 is inserted to an appropriate position, the locking portion 8 b on the outdoor side is caught by the upper end outer surface 4 a of the outer wall member 4 and locked. Further insertion is impossible, and excessive insertion of the packing 8 is reliably prevented. Further, when the airtight pieces 8e, 8f are pressed against the sloped eaves ceiling 45, the reaction force exerts a component force toward the packing 8 on the indoor side. Due to the balance of the locking force by the stopper 8b, the packing 8 is stably held in place without being displaced.
[0025]
In particular, the contact B with the eaves ceiling 45 of the airtight piece 8e on the outdoor side and the contact C with the eaves ceiling 45 of the indoor airtight piece 8f are drawn from the upper end outer surface corner A of the outer wall material 4 to the eaves ceiling 45. Since they are located on the outdoor side and the indoor side with the vertical line Ls in between, once the packing 8 is inserted, the packing 8 can be stably held at a fixed position with good balance.
[0026]
Further, since the front side surfaces of the two airtight pieces 8e and 8f are in close contact with the lower surface of the eaves ceiling 45, the airtightness and watertightness of the joints are maintained, and an air layer is formed between the airtight pieces 8e and 8f. Since 9 is secured, the wind pressure on the outdoor side can be gradually reduced toward the indoor side, and airtightness and watertightness can be further enhanced.
[0027]
In addition, since the hooking portion 8c for retaining is provided on the indoor side of the packing 8, there is no fear that it will come off easily even if a pulling force acts on the outdoor side due to a pressure difference or the like. In addition, the front end of the hook portion 8c is provided with an inclined surface 8d, and the hook portion 8c itself has elasticity, so that the resistance during insertion can be reduced, and the packing 8 can be made easily. It can be inserted into the gap 7. Moreover, since it does not depend on the conventional wet joint method, all the problems can be solved, and the workability can be improved and the cost can be reduced.
[0028]
Although the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above-described embodiments, and various design changes and the like can be made without departing from the scope of the present invention. is there. For example, the number of the airtight piece portions 8e and 8f may be a plurality of three or more. When the number of airtight piece portions 8e and 8f is three or more, an air layer secured between adjacent airtight piece portions becomes multistage. , Can improve the airtightness and watertightness more.
[0029]
Moreover, in the said embodiment, although applied when the eaves ceiling 45 has a slope, as shown in FIG. 4, this invention is applicable also in the case of the horizontal eaves ceiling 45. As shown in FIG. In that case, when a vertical line Ls is drawn from the outdoor side corner portion A of the outer wall material 45 to the gradient eave ceiling 45, the contact B to the eave ceiling 45 of the airtight piece 8e on the outdoor side is connected to the vertical line Ls, as in the above embodiment. Further, the dimension a is located on the outdoor side, and the contact C to the eaves ceiling 45 of the indoor airtight piece 8f is located on the indoor side by the dimension b from the perpendicular Ls. Further, the contact C is only the dimension c (c = b when the eaves ceiling 45 is horizontal) than the extension line Lt of the upper end outer surface of the outer wall material 4 (Lt = Ls when the eaves ceiling 45 is horizontal). Located indoors.
[0030]
Therefore, as in the above-described embodiment, the adhesion of the packing 8 to the outer wall material 4 is enhanced due to the positional relationship of the missing contacts, thereby improving airtightness and watertightness, and maintaining the packing 8 in a well-balanced manner. Become.
[0031]
Moreover, in the said embodiment, although the case where the outer wall material 4 was attached to the wall part 3 of the building frame 2 via the mounting brackets 20 and 21 was shown, as shown in FIG. 5, the wall part of the building frame 2 is shown. The present invention can also be applied to the case where the vertical wall edge 30 is provided at 3 and the outer wall member 4 is fixed to the vertical wall edge 30 with a fixing tool such as a nail.
[0032]
【The invention's effect】
In short, according to the present invention, an outer wall member is attached to a wall portion of a building frame via a ventilation layer, and a packing is inserted into a gap between an upper end portion of the outer wall member and an eaves ceiling. A main body part inserted into the gap from the outdoor side and supported by the upper end part of the outer wall member, and a member projecting downward from the outer end part of the main body part and locked to the upper outer surface of the outer wall member The stopper and the upper surface of the main body are protruded upward with a gap in the insertion direction, and elastically deformed to the outside as the packing is inserted into the gap, so that each tip is pressed against the lower surface of the eaves ceiling At least two outdoor side and indoor side airtight piece portions in contact with each other, and the contact point of the outdoor side airtight piece portion and the contact point of the indoor side airtight piece portion with respect to the lower surface of the eaves ceiling is an upper end outer surface of the outer wall material Located on the outdoor side and indoor side across the vertical line from the corner to the eaves ceiling. Therefore, simply with high airtightness, watertightness gasket in the gap eaves ceiling and exterior wall materials and can be surely attached, thereby improving the workability.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional view showing a main part configuration of an outer wall according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing the overall configuration of the outer wall.
FIGS. 3A and 3B are explanatory views of a packing insertion procedure, in which FIG. 3A is a sectional view showing a state before insertion, and FIG. 3B is a sectional view showing a state during insertion;
FIG. 4 is an enlarged sectional view showing an example in which the present invention is applied to a building having a horizontal eave ceiling.
FIG. 5 is an explanatory diagram in a case where an outer wall material is attached to a building frame via a vertical trunk edge.
FIG. 6 is an enlarged sectional view for explaining a conventional wet joint method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer wall 2 Housing 3 Wall part 4 Outer wall material 7 Gap 8 Packing 8a Main body part 8b Locking part 8e Outdoor side airtight piece part 8f Indoor side airtight piece part 23 Ventilation layer 45 Eaves ceiling Ls Perpendicular A Upper end outer surface corner part B of outer wall material , C contact

Claims (1)

An outer wall member is attached to a wall of a building frame via a ventilation layer, and a packing is inserted into a gap between an upper end portion of the outer wall member and an eaves ceiling, and the packing is inserted into the gap from an outdoor side. A main body portion inserted and supported by the upper end portion of the outer wall material; a locking portion projecting downward from the outdoor side end portion of the main body portion and locked to the upper outer surface of the outer wall material; At least two outdoor sides projecting upward with an interval in the insertion direction on the upper surface, elastically deforming to the outdoor side as the packing is inserted into the gap, and each tip side is in pressure contact with the lower surface of the eaves ceiling And the indoor side airtight piece portion, the contact point of the outdoor side airtight piece portion and the contact point of the indoor side airtight piece portion with respect to the lower surface of the eaves ceiling is drawn from the upper end outer surface corner of the outer wall material to the eaves ceiling. An outer wall characterized by being located on both the outdoor side and the indoor side across a vertical line.

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