JP3160238U - Thermal insulation board for exterior walls - Google Patents

Abstract

A heat insulating board made of foamed resin capable of quickly removing moisture on the back surface. A lateral drainage notch 11 is provided in at least one of a rear (Q) side upper corner and a rear side lower corner to connect both left and right ends, and a back side left end and a back side right end. At least one of them is provided with a vertical drainage cutout portion 12 that communicates the upper and lower ends. By providing such a notch for drainage on the back surface of the heat insulation board 10, the moisture reaches the lowermost end of the heat insulation board through the notches 11 and 12 for drainage and is discharged to the outdoors. The drainage cutout may be formed by selecting any one of an inclined surface, a curved concave surface, and a rectangular concave surface. The shape of the drainage notch is not particularly limited as long as moisture generated on the back surface of the heat insulation board can be moved in the horizontal direction and the vertical direction (downward). [Selection] Figure 1

Description

  The present invention relates to a heat insulating board for a building outer wall, and more particularly to a structure for improving drainage on the back surface of a heat insulating board made of foamed resin.

  In general wooden buildings, buildings, etc., in addition to improving the aesthetics (appearance quality), a new external insulation system in which a foam resin insulation board is attached to the outer wall to improve the heating efficiency in winter and the cooling efficiency in summer A construction method or a remodeling method is known (for example, Patent Document 1).

  External insulation using a heat insulation board made of foam resin is a comparative point of attaching the insulation board to the surface of the outer wall. By simple construction, the cooling and heating efficiency can be dramatically improved and the appearance can be changed at any time, so the house is demolished and newly built There is an advantage that the habitability and the quality of aesthetics can be drastically improved without the need for construction. Since construction costs can be kept low, stable demand is expected.

JP 2007-138443 A

  The problem is the moisture on the back side of the heat insulating board made of foamed resin stuck to the outer wall.

  The heat insulation board should be placed close to the top, bottom, left and right without any gaps, or caulked if necessary. Is likely to wrap around. In addition, if even a slight gap is generated, condensation may occur due to the difference between the back surface temperature of the heat insulating board and the outside air temperature.

  If the moisture on the back surface of the heat insulating board which may be generated in this way stays for a long time, it may deteriorate wooden members, mortar, concrete, etc. used for the outer wall of the casing and damage the outer wall.

  Therefore, an object of the present invention is to provide a heat insulating board made of foamed resin that can quickly remove moisture generated on the back surface.

  In order to achieve the above object, a heat insulation board for an outer wall according to the present invention is provided with a lateral drainage notch for connecting both left and right ends at at least one of a back side upper corner and a back side lower corner. In addition, at least one of the back-side left end and the back-side right end is provided with a vertical drainage cutout that communicates the upper and lower ends (Claim 1).

  By providing such a notch for drainage on the back surface of the heat insulation board, moisture passes through the notch for drainage, reaches the lowermost end of the heat insulation board, and is discharged outdoors.

  The drainage notch may be formed by selecting any one of an inclined surface, a curved concave surface, and a rectangular concave surface (Claim 2). Since the moisture generated on the back surface of the heat insulation board only needs to be moved in the horizontal and vertical directions (downward), the shape of the notch for drainage is not particularly limited, but if considering the ease of molding, it is inclined. It is preferable to select and form any one of a surface, a curved concave surface, and a rectangular concave surface.

  The heat insulation board may be provided with fitting irregularities in the lateral direction connecting the left and right ends on the upper and lower surfaces (claim 3). The upper and lower surfaces of the heat insulation board may be flat surfaces, but by providing lateral fitting concavities and convexities that connect the left and right ends, it becomes easy to dispose the upper and lower heat insulation boards, and misalignment after construction (for example, The floating of the edge of the heat insulation board can be surely prevented.

  According to the heat insulation board for an outer wall according to the present invention, it is possible to quickly remove moisture generated on the back surface of the heat insulation board by the drainage notch provided on the back surface of the heat insulation board.

It is a perspective view which shows an example of the heat insulation board for outer walls which concerns on embodiment. It is a figure which shows the example of arrangement | positioning of the heat insulation board for outer walls which concerns on embodiment. It is a figure which illustrates the arrangement | positioning state of the lowest end part of the heat insulation board which concerns on embodiment. It is sectional drawing of the junction part which illustrates the notch part for drainage of the horizontal direction which concerns on embodiment. It is sectional drawing of the junction part which illustrates the notch part for drainage of the vertical direction which concerns on embodiment. It is a perspective view which illustrates the heat insulation board concerning a second embodiment. It is sectional drawing which shows 2nd embodiment of the notch part for drainage of the vertical direction which concerns on this invention. It is sectional drawing which shows 3rd embodiment of the notch part for drainage of the vertical direction which concerns on this invention.

  FIG. 1 shows an example of a heat insulation board for an outer wall according to the present invention. This heat insulation board 10 is made of foamed resin, and when the surface indicated by the symbol Q is the back surface, at least one of the back side upper corner and the back side lower corner, for example, in this embodiment, the back side upper corner In addition, a lateral drainage cutout portion 11 that connects the left and right ends is provided, and at least one of the back side left end and the back side right end, for example, the back side left end and the back side right end in this embodiment. Both are provided with a vertical drainage cutout 12 that communicates the upper and lower ends.

  For example, a panel material such as foamed urethane or foamed styrene (for example, so-called EPS) can be used for the heat insulating board 10. Preferably, a hard foamed resin having closed cells is used by an extrusion molding method or the like. The foamed resin panel 16 has a thickness of 20 mm or more, and preferably has a thickness of 50 to 100 mm. A width of about 910 mm, for example, and a vertical dimension of, for example, about 1820 mm can be used. Of course, since the size can be freely set at the time of manufacture, it is desirable to set the size according to the application location.

  The drainage notches 11 and 12 are formed by, for example, notching the corners (upper and left and right) of the back surface Q so as to form an inclined surface of 45 degrees. This is so-called chamfering at 45 degrees.

  The drainage notches 11 and 12 are for guiding the moisture generated on the back surface Q of the heat insulation board 10 downward and discharging it from the bottom end to the outside of the wall.

  Accordingly, the drainage cutout portion 11 provided in the upper corner portion on the back surface side is provided so as to communicate with both left and right end portions, that is, in this embodiment, the drainage cutout portion 12 provided at the left end portion on the back surface side and the right end portion on the back surface side. . As a matter of course, the arrangement direction of the drainage notch 11 is the horizontal direction.

  Further, the drainage cutout portions 12 provided at both the backside left end portion and the backside right end portion are upper and lower end portions, that is, in this embodiment, the drainage cutout portion 11 provided at the back side upper corner portion and the back side lower corner portion. Provide to contact. Naturally, the arrangement direction of the drainage notch 12 is the vertical direction.

  There is not much moisture generated on the back surface Q of the heat insulation board 10. Unless a special case where heavy rain falls when the outer wall surface is severely damaged by a large earthquake or a vehicle collision, the drainage notches 11 and 12 that are 45 ° chamfered chamfers are 5 mm in corners. If it is formed by cutting out about × 5 mm, that is, if the width of the inclined surface is about 7 mm (5 × √2 mm), it can withstand practical use.

  The heat insulating board 10 is fixedly disposed on an outer wall surface (such as a structural face plate) of a building using an appropriate fixing tool such as a washer or a screw (not shown). Preferably, as shown in FIG. 2, the upper thermal insulation panel 10 and the lower thermal insulation panel 10 are arranged in a so-called zigzag pattern. It is desirable to dispose the lower heat insulation panel 10 by ½ movement in the longitudinal direction like so-called small stacking or longitudinal stacking, which is a brick stacking method. This is for preventing the positional deviation of the heat insulating panels 10 arranged in the upper and lower stages and suppressing the expansion of the gap in the joint portion.

  Thus, when the heat insulation panel 10 is arranged, the notch parts 11 and 12 for drainage will be located in the part shown with the thick line in FIG. Moisture generated on the back surface of the heat insulating panel 10 moves to the lowermost end through these drainage cutouts 11 and 12, and for example, as shown in FIG. It can be discharged to the outdoor side through the gap P on the top. Reference sign R is a structural housing.

  For ease of understanding, a use state reference diagram of the drainage notch 11 according to this embodiment is illustrated as FIG. 4, and a use state reference diagram of the drainage notch 12 according to this embodiment is illustrated as FIG. The drainage notch 11 extending in the lateral direction exists in the lower thermal insulation board 10 in terms of the relationship between the upper and lower thermal insulation boards 10, and the drainage notch 12 extending in the vertical direction is adjacent to the left and right thermal insulation boards 10. Present at both ends of each other.

  Therefore, according to the heat insulating board 10, the moisture generated on the back surface passes through the horizontal drainage notch 11 and the vertical drainage notch 12, and moves downward by the gravitational action, so that Since it is discharged to the outdoors from the lower surface of the drainage cutout 12 in the vertical direction of the heat insulation board, it is possible to reliably reduce the possibility of moisture remaining on the back surface of the heat insulation board 10 and deteriorating the housing (particularly the structural face plate). .

  On the other hand, the drainage notches 11 and 12 function as a ventilation path (intake and exhaust path) for guiding outside air to the back surface of the heat insulation board 10. It is possible to always keep the back surface in a low humidity state.

  FIG. 6 shows another embodiment of the heat insulation board according to the present invention. This heat insulation board 20 is provided with the fitting unevenness | corrugation 27 of the horizontal direction which connects right-and-left both ends to an upper surface and a lower surface.

  By providing the fitting unevenness 27, vertical positioning when the heat insulating board 20 is disposed and constructed becomes easy, and positional deviation in the vertical and horizontal directions is less likely to occur. In particular, it becomes difficult for the upper and lower seams to lift due to deterioration, and the appearance quality can be guaranteed over a long period of time.

  Since the gap is less likely to occur at the joint, it is possible to suppress the possibility of rainwater or snowmelt from entering the backside from the joint.

  In order to prevent rainwater and snowmelt water from entering from the joints and to improve the appearance quality of the building, it is preferable to waterproof the surface of the joints. This waterproofing process is performed by, for example, arranging a mesh (for example, a glass fiber mesh) along the joint, and covering the mesh (joint portion) and the entire surface of the heat insulation board 20 with a waterproof property (base coat material, top coat material). ) To finish. Since the top coat material (final finish material) can be variously colored and patterned, it is possible to obtain the appearance quality according to the desire of the owner.

  Of course, the heat insulation board 20 is also provided with drainage notches 21 and 22. The drainage notch 11 is provided at the upper corner on the back side, and the drainage notch 12 is provided at the left end on the back side and the right end on the back side. The drainage notch 21 extends in the lateral direction so as to communicate with the left and right ends, and the drainage notch 22 extends in the longitudinal direction so as to communicate with the upper and lower ends. The form is the same.

  According to the heat insulating board 20, since the fitting unevenness 27 extending in the lateral direction is provided on the upper surface and the lower surface, the bonding property of the upper and lower heat insulating boards 20 can be improved, and the vertical movement and lifting can be prevented. It is possible to reduce the intrusion of rainwater and the like from the joint (gap between the joint portions) into the back surface.

  Even if moisture is generated on the back surface of the heat insulation board 20, the moisture can be discharged out of the wall through the drainage cutout portions 21 and 22, so that the possibility of deterioration of the housing can be reduced. The drainage notches 21 and 22 function as a cold path, and the operation of guiding the back surface of the heat insulation board 20 to the dry state is the same as in the above embodiment.

  The heat insulation board according to the present invention is not limited to the above embodiment. For example, the drainage notches 11, 12, 21, and 22 are not limited to 45-degree chamfered inclined molding, but use various molding patterns such as so-called corner chamfering, round chamfering, and ginkgo chamfering when notching corners. I can do it.

  Specifically, the shape of the drainage notches 11, 12, 21, and 22 may be, for example, a curved cross section as shown in FIG. 7, or a rectangular cross section as shown in FIG. May be. These shapes are not particularly limited, as long as they function as a drainage path that can guide moisture to the outside of the wall.

  In the above embodiment, it has been described that the horizontal drainage notches 11 and 21 are provided on the upper surface. However, it is needless to say that the drainage notches 11 and 21 may be provided on the lower surface (lower surface on the back side) instead of the upper surface. Moreover, you may provide the notch parts 11 and 21 for horizontal drainage in both the upper surface and a lower surface.

  In the above embodiment, it has been described that the horizontal drainage notches 11 and 21 are provided on the upper surface and / or the lower surface, and the vertical drainage notches 12 and 22 are provided on the left end and / or the right end. An arbitrary number of drainage notches 11, 12, 21, and 22 may be provided (for example, at an appropriate position such as the center of the back surface). Moreover, the width (passing dimension) of the drainage notches 11, 12, 21, and 22 is not limited to the case of 45-degree chamfering, and is practical if it is set to a minimum of about 5 to 10 mm regardless of the shape. Endure.

10, 20 Thermal insulation board 11, 12, 21, 22 Drainage notch 27 Fitting irregularities B Foundation concrete P Gap Q Back surface R Structure body S Draining board

Claims (3)

In the heat insulation board made of foam resin to be arranged on the outer wall of the building,
At least one of the back side upper corner and the back side lower corner is provided with a lateral drainage notch that connects the left and right ends,
A heat insulating board for an outer wall, characterized in that a vertical drainage cutout portion that communicates both upper and lower ends is provided on at least one of the back side left end and the back side right end.   The heat insulation board for an outer wall according to claim 1, wherein the drainage cutout portion is formed by selecting any one of an inclined surface, a curved concave surface, and a rectangular concave surface.   The heat insulation board for an outer wall according to any one of claims 1 and 2, wherein the upper surface and the lower surface are provided with lateral fitting concavities and convexities connecting the left and right ends.

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