JP2000274048A - Structure and method for mounting furring strip on existing exterior wall surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach a furring strip by use of tapping screws to an existing ALC exterior wall surface. SOLUTION: A furring strip 5 is attached via tapping screws 6 to an existing ALC exterior wall surface 1. The furring strip 5 is made of a material with a cushioning surface, such as wood, low-foam resin, porous material, etc. The tapping screw 6 is driven into the existing ALC exterior wall panel 1 by 50 mm or more with its head 6a sunk in the furring strip 5 without the tapping screw 6 being entirely passed through the panel 1. The pull strength of the tapping screw 6 is 20 kgf or more. Hence, the work of installing the furring strip 5 and the exterior wall panel needs only driving of the tapping screws 6 and the period of construction work can be greatly reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an existing ALC (one of lightweight cellular concrete) outer wall surfaces, which is provided with a rim through a tapping screw, and a new outer wall panel is mounted on the rim. It is related to the technology to repair the outer wall.

[0002]

2. Description of the Related Art In a steel-frame building, an ALC outer wall panel is used, and the outer wall panel is attached to a steel structure via a metal fitting attached to the outer wall panel. And
When the existing ALC outer wall panel is damaged, such as contamination, discoloration, deformation, and cracks, and becomes unattractive, repair work has been performed. Traditional repair work
A method of replacing all of the ALC outer wall panels with new ones has been adopted. However, in this case, a large-scale repair work is required, and the construction period is prolonged and the construction cost is increased.

For this reason, conventionally, as shown in FIG.
A metal outer rim 3 is attached to the surface of an existing ALC outer wall panel 1 via a dedicated anchor bolt 2, and a new outer wall panel 4 is attached to the metal outer rim 3 to attach the existing ALC outer wall surface. We are trying to renovate.

[0004]

However, in the prior art for attaching the metal rim 3 using the anchor bolts 2, the attachment strength to the existing outer wall is sufficiently ensured, but the work for attaching the anchor bolts 2 is not sufficient. , A step of previously drilling a hole in the existing ALC outer wall panel 1, a step of inserting the anchor bolt 2 into the hole, and a step of tightening the nut 2a of the anchor bolt 2 are required. It took a lot of trouble and time to install the 3.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems and has been improved and removed. The present invention has been made so that a tapping screw can be used to attach a body edge to an existing external wall surface made of ALC. It is intended to provide such a structure and method.

[0006] In order to solve the above-mentioned problem, the present invention adopts the means of claim 1 in which a body edge is attached to an existing outer wall surface made of ALC via a tapping screw. The tapping screw is made of a material having a cushioning property on the surface of a low-foaming resin, a porous body, or the like. The tapping screw has a pull-out strength of 20 kgf or more. By using the rim made of a material having cushioning properties on the surface, the tapping screw can be directly penetrated and attached to an existing ALC external wall surface, and the rim construction work is simple. ALC tapping screw
By screwing 50 mm or more without penetrating the existing outer wall surface of the product, the pull-out strength can be made 20 kgf or more, and sufficient mounting strength can be secured.

The means of claim 2 adopted by the present invention is as follows.
A method of attaching a body edge to an existing outer wall surface made of ALC via a tapping screw, wherein a tapping screw is attached by screwing the body edge without a pilot hole into the existing outer wall surface. is there. Since it is not necessary to perform a pre-drilling process on the body edge, the workability thereof is extremely excellent.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the embodiments of the invention shown in the drawings. The same reference numerals as those in the conventional case denote the same members. FIG. 1 is a longitudinal sectional view showing a renovated wall structure according to an embodiment of the present invention. As shown in the figure, in this embodiment, a material having cushioning properties on the surface, such as wood, a low foaming resin, or a porous body, is employed as the material of the body edge 5. The thickness of the body edge 5 is set to 12 to 18 mm, and the arrangement interval is set to 455 mm. When the body edge 5 is made of wood, a thickness of 18 mm and a width of 60 mm are appropriate. The tapping screw 6 has a diameter of 6 mm and a length of 80 mm.
We are trying to use those.

[0009] Attachment of the rim 5 to the existing ALC outer wall panel 1 is performed by directly passing the tapping screw 6 through the rim 5 to reach the existing ALC outer wall, and at least 50 mm.
mm or more is screwed into the existing outer wall panel 1 made of ALC, and is prevented from penetrating the existing outer wall panel 1 made of ALC. When the tapping screw 6 is screwed with a normal screwing torque, the surface of the body edge 5 has a cushioning property.
, And does not protrude from the surface of the body edge 5. Each of the tapping screws 6 screwed in this way has a pull-out strength of 20 kgf or more.

After that, if the new outer wall panel 4 is attached to the rim 5 via screws or metal fittings, the ALC
Of the existing exterior wall panel 1 is completed.

The present invention is not limited to the above-described embodiment. For example, the thickness and length of the tapping screw 6, the thickness and width of the body edge 5, the pitch of the body edge 5 and the like are not limited. What is necessary is just to change suitably according to the situation of a site.

[0012]

As described above, in the present invention,
By using the rim made of a material having a cushioning property on the surface, the tapping screw can be directly penetrated through the rim and attached to the existing outer wall surface made of ALC, and the attaching work of the rim becomes extremely simple. . Further, even if the tapping screw is screwed in with a normal tightening torque, the head of the screw taps into the body edge, so that the tapping screw is not over-tightened, thereby preventing a problem due to over-tightening. Further, there is no problem that the head of the tapping screw projects when the outer wall panel is fastened to the body edge. Furthermore, by screwing 50 mm or more without penetrating the tapping screw into the existing outer wall surface made of ALC, the pull-out strength can be made 20 kgf or more, and sufficient mounting strength can be secured. Therefore,
The construction work of the body edge and the outer wall panel is performed only by screwing the tapping screws, so that the construction period can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a refurbished wall according to an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of a conventional renovation wall surface.

[Explanation of symbols]

1 ... Existing exterior wall panel made of ALC 4 ... Outside wall panel 5 ... Body edge 6 ... Tapping screw 6a ... Tapping screw head

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuji Kuriaki 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Katsumi Iwai 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Nobuyoshi Suzuki 5-1-1 Koiehonmachi, Tokoname-shi, Aichi F-term in Inax Co., Ltd. (Reference) 2E110 AB04 AB22 CA07 DA16 DC12 GA24Z GA33Z GB23Z 2E176 AA02 BB25

Claims (2)

[Claims] The present invention is characterized in that a body edge is attached to an existing outer wall surface made of ALC via a tapping screw, and the body edge is made of a material having a cushioning property on a surface such as wood, low foaming resin, or a porous body. The screw is screwed in at least 50mm without penetrating into the existing ALC outer wall, and the tapping screw has a pull-out strength of at least 20kgf each. Attachment structure of the torso. 2. A method of attaching a body edge to an existing outer wall surface made of ALC via a tapping screw, wherein a tapping screw is screwed into the body edge without a pilot hole and attached. How to attach the rim.