JP2003321882A - Spacer for in-wall ventilation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spacer for in-wall ventilation, which is economical, dispenses with complicated molding and perforation, and secures venting spaces excellent in air permeability, on both sides thereof. <P>SOLUTION: The spacer 1 for in-wall ventilation is formed of a thin substrate 11 having a number of projections formed thereon in longitudinal and transverse directions. The substrate 11 is made of a synthetic resin such as polyethylene resin and polypropylene resin. The projections 12 projecting on one side of the substrate are arranged so as to alternately continue to the projections 12 on the other side, and each projection is trapezoidal in cross section. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-wall ventilation spacer for ensuring a ventilation layer in a wall of a building.

[0002]

2. Description of the Related Art In a wooden building, structural plywood or the like is attached to the outdoor side of the wall to serve as a base for mounting exterior materials, and an interior base panel such as plasterboard is attached to the indoor side of the wall to construct the structure. It is common to sandwich a moisture-proof heat insulating material between the plywood and the interior base panel. In such a wall structure, the moisture contained in wood or plywood is released into the wall by solar heat, and indoor moisture intrudes into the wall from the joints of the moisture-proof layer or around the outlet and stays inside the wall. there is a possibility. Therefore, in order to discharge such moisture from the inside of the wall, an in-wall ventilation layer is provided between the structural plywood and the heat insulating material, or between the structural plywood and the exterior material (siding).

The in-wall ventilation layer normally introduces outside air into the wall from the vicinity of the lower part of the outer wall or from under the floor, and naturally raises the introduced outside air due to the temperature difference. It is provided to discharge. In order to form such an in-wall ventilation layer, conventionally, an in-wall ventilation spacer 9 as shown in FIG. 3, for example, has been used.

The illustrated in-wall ventilation spacer 9 is a molded product made of a thin plate made of resin, and has a large number of substantially frustoconical projections 92 provided on one surface of a flat substrate 91. When such an in-wall ventilation spacer 9 is sandwiched between, for example, a structural plywood and a heat insulating material, a space corresponding to the height of the protrusion 92 is secured over the entire surface between the structural plywood and the heat insulating material. The gaps between the projections 92 communicate in the vertical and horizontal directions to form a ventilation space.

[0005]

However, in the conventional spacer 9 for ventilation in the wall, since the projection 92 is formed only on one surface of the substrate 91, the moisture generated from the member on the side where the substrate 91 is in contact is smoothed. It cannot be distributed and discharged. In order to solve this problem, the substrate 91 is conventionally used.
It has been practiced to make a hole for ventilation in a part of the above, or to provide the surface of the substrate 91 with an uneven shape. For this reason, the molding die becomes complicated, and the manufacturing cost of the spacer 9 for ventilation in the wall is increased due to the labor of drilling. Further, there is a disadvantage that it takes time and cost to process the waste material generated by punching.

[0006] Therefore, an object of the present invention is to provide a spacer for ventilation in a wall, which can secure a ventilation space having excellent air permeability on both surfaces without performing complicated forming and drilling.

[0007]

In order to solve the above problems, an in-wall ventilation spacer according to the present invention is for in-wall ventilation in which a large number of projections are formed in a vertical and horizontal direction on a substrate made of a resin thin plate. The spacer is characterized in that the protrusions protruding on one surface side of the substrate and the protrusions protruding on the other surface side are arranged so as to be alternately continuous.

According to the present invention, since the projections are arranged so as to alternately project to one surface and the other surface of the substrate, it is possible to secure ventilation spaces of the same size on both surfaces of the substrate, and in the wall. The breathability can be improved as compared with the conventional one. Also, if this spacer for ventilation inside the wall is formed by extrusion molding of a synthetic resin material such as polypropylene or polyethylene, it is extremely economical to manufacture without the need for drilling or other complicated secondary processing. You can

Further, in the spacer for ventilation in the wall of the present invention, the contact area between the top surface of the projection and the structural plywood, heat insulating material or other surface material is made small by making the cross-sectional shape of the projection substantially trapezoidal. It is possible to secure a larger ventilation space.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an in-wall ventilation spacer according to an embodiment of the present invention, and FIG. 2 shows its use state.

The in-wall ventilation spacer 1 is a thin plate-shaped molded product obtained by extruding a synthetic resin material such as polyethylene, polypropylene or the like. The in-wall ventilation spacer 1 has a large number of projections 12 formed so as to project on both front and back surfaces of a flat plate-shaped substrate 11. In this example, the projection 12 has a truncated pyramid shape with a substantially square bottom surface, but may have a truncated cone shape or an appropriate truncated pyramid shape. The protrusions 12 are arranged at equal intervals in the vertical and horizontal directions,
The protrusions 12 protruding on the front surface side of the substrate and the protrusions 12 protruding on the rear surface side are formed so as to be alternately continuous.

FIG. 2 shows a wall structure of a wooden building. Reference numeral 2 is structural plywood, reference numeral 3 is a fiber heat insulating material such as glass wool, and reference numeral 4 is an exterior material attached to the structural plywood 2.
Reference numeral 5 is an interior base panel such as plasterboard, and reference numeral 6
Is a beam, symbol 7 is a joist, and symbol 8 is a floorboard.

In such a wall structure, when the in-wall ventilation spacer 1 is sandwiched between the structural plywood 2 and the heat insulating material 3,
The top surfaces of the projections 12 projecting on one side of the substrate 11 and the projections 12 projecting on the other side are in contact with the surfaces of the structural plywood 2 and the heat insulating material 3, respectively. As a result, the ventilation spaces 13 each having a width corresponding to the height of the protrusion 12 are formed on both sides of the substrate 11, and two in-wall ventilation layers can be secured with the substrate 11 interposed therebetween.

In this in-wall ventilation spacer 1, in addition to the projection 12 having a trapezoidal cross section and having a smaller top surface area than the bottom surface, a large number of projections 12 are formed on one side and the other side. Since they are formed so as to project half by half, the contact area between the structural plywood 2 or the heat insulating material 3 and the projection 12 can be reduced significantly compared with the conventional in-wall ventilation spacer 9. This makes it easier for the air in the wall to circulate, and it is possible to smoothly discharge the moisture released from the structural plywood 2 and the heat insulating material 3 into the wall. Moreover, if the height of the protrusion 12 is increased, a wider in-wall ventilation layer can be secured.

[0016]

Since the projections of the in-wall ventilation spacer of the present invention are arranged so as to alternately project to one side and the other side of the substrate, the same size ventilation space is secured on both sides of the substrate. You can Further, by making the cross-section of the projection substantially trapezoidal, it is possible to reduce the contact area between the top surface of the projection and the structural plywood, heat insulating material and other surface materials, and to secure a larger ventilation space. it can.

Further, since the in-wall ventilation spacer of the present invention can be obtained by molding a large number of protrusions on a substrate made of a thin resin plate, it is not necessary to make holes or other complicated secondary processing. , Can be manufactured extremely inexpensively. In addition, since waste materials and the like due to drilling are not generated, it is economical in terms of effective use of resources and waste disposal.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an in-wall ventilation spacer according to an embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view of the in-wall ventilation spacer.

FIG. 3 is a partial cross-sectional view of the wall showing a usage state of the in-wall ventilation spacer.

FIG. 4 is a partially cutaway perspective view showing a spacer for ventilation in a wall according to a conventional technique.

[Explanation of symbols]

1 Spacer for ventilation in the wall 11 board 12 protrusions

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuo Yokoe             Sekisui Ha 1-88 Oyodo Naka 1-chome, Kita-ku, Osaka City             Inside Us Co., Ltd. F term (reference) 2E001 DB02 FA03 GA17 HD11 ND12

Claims (2)

[Claims] 1. A spacer for ventilation in a wall, comprising a substrate made of a resin thin plate and a plurality of protrusions formed in the vertical and horizontal directions, the protrusion protruding to one side of the substrate and the protrusion protruding to the other side of the substrate. An in-wall ventilation spacer characterized in that and are arranged so as to alternate with each other. 2. The in-wall ventilation spacer according to claim 1, wherein the projection has a substantially trapezoidal cross-sectional shape.