JP7215941B2 - Attachment fittings for joints of furring strips in repaired outer wall structures - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fittings for joints of furring strips in repaired exterior wall structures.

Conventionally, in the renovation of exterior walls, there is known a so-called cover construction method, in which a new furring strip is placed on the existing exterior wall material without removing the old existing exterior wall material, and a new furring strip is constructed on the new furring strip. ing. (Patent Document 1) In addition, when placing a new furring strip on such an existing exterior wall material, there is a method in which an attachment for mounting furring strips is installed on the existing exterior wall material in advance, and the new furring strip is attached to the attachment. Are known. (Patent document 2)

Japanese Patent Application Laid-Open No. 2001-107535 JP 2015-67983 A

Patent document 1 is composed of a furring strip placed on an existing outer wall material and a new outer wall material fixed on the furring strip and arranged so as to cover the existing outer wall material. It is a joint mounting bracket for furring strips in a repaired exterior wall structure that is driven into the base that supports the existing exterior wall material by penetrating it.

However, in this method of fixing the furring strips directly to the foundation that supports the existing exterior wall material using fixtures, when the furring strips are fixed, the long furring strips must be held and handled. The installation work was difficult because it was necessary to adjust the position and fix the furrings directly to the base on the back side of the existing exterior wall material.

Therefore, there is a method of fixing an attachment for attaching furring strips to the wall surface of the frame, and fixing the metal furring strips to the attachments, as in Patent Document 2.

The attachment of Patent Document 2 has a base portion fixed to a wall surface by anchor bolts by bending a metal plate at various points in the longitudinal direction, and a base portion that is bent from the base portion and separated from the wall surface. an extending inner wall portion, a supporting portion integral with the inner wall portion and attached with furrings extending from the inner wall portion in parallel with the substrate portion by being bent at an end side in the longitudinal direction, and integral with the supporting portion. and an outer wall portion that is bent at the end side in the longitudinal direction from the support portion and extends toward the wall surface, or an attachment that is formed symmetrically.

However, the attachment disclosed in Patent Document 2 has a simple shape in which a metal plate is bent at various points in the longitudinal direction, and thus lacks sufficient strength against external force. There was a possibility that it would be deformed by an external force due to lack of strength such as.

Furthermore, in the construction method of the exterior material disclosed in Patent Document 2, since the furring strip attachment is fixed to the wall surface of the frame with anchor bolts, the wall surface used for fixing deteriorates, lacks strength, and lacks mounting strength. I had a problem.

In order to solve such problems, the present invention provides the following means.

A vertical planar fixing surface, an upper reinforcing piece protruding from the upper end portion of the fixing surface to the outdoor side, a rising piece horizontally protruding to the outdoor side in the middle of the fixing surface, and a tip of the rising piece pointing downward. In a repaired exterior wall structure formed from a suspended construction surface, a lower reinforcing piece protruding indoors from the lower end of the construction surface, and construction position confirmation pieces projecting outward from the construction surface at both left and right ends of the fixed surface A furring strip joint fitting is provided.

According to the fitting for the joint portion of furring strips in the repaired exterior wall structure according to the present invention, (1) the cost is low. (2) Good workability. (3) Renovated outer wall structure with excellent strength. (4) The sliding phenomenon of ALC during an earthquake (in the case of the dry rocking construction method) is followed, and the earthquake resistance is improved.

FIG. 10 is a perspective view showing an embodiment of a fitting for the joint portion of furring strips in the repaired outer wall structure according to the present invention. FIG. 4 is an explanatory diagram showing an embodiment of a fitting for a joint portion of furring strips in the repaired outer wall structure according to the present invention; FIG. 4 is a horizontal cross-sectional view showing the order of construction of a repaired wall structure to be constructed with joint fittings for furring strips in the repaired outer wall structure according to the present invention. FIG. 10 is a perspective view and a cross-sectional view showing a construction state of a repaired wall structure to be constructed with joint fittings for furring strips in the repaired outer wall structure according to the present invention. FIG. 4 is an explanatory diagram showing a construction state at an opening of a repaired wall structure to be constructed with a joint fitting for furring strips in the repaired outer wall structure according to the present invention; FIG. 10 is an explanatory view showing the construction state of the hat-shaped furring strip and the general furring strip in the opening of the repaired wall structure, which is constructed with the fitting for the joint portion of the furring strip in the repaired outer wall structure according to the present invention. FIG. 4 is a cross-sectional view showing the state of the opening of the repaired wall structure to be constructed with the fitting for the joint portion of the furring strip in the repaired outer wall structure according to the present invention. FIG. 10 is an explanatory view showing the construction state of general part mounting brackets and joint part mounting brackets in the opening of the repaired wall structure constructed with the joint part mounting brackets of furring strips in the repaired outer wall structure according to the present invention. FIG. 10 is an explanatory view showing the construction state of the hat-shaped furring strip and the general furring strip in the opening of the repaired wall structure, which is constructed with the fitting for the joint portion of the furring strip in the repaired outer wall structure according to the present invention. FIG. 4 is a cross-sectional view showing the state of the opening of the repaired wall structure to be constructed with the fitting for the joint portion of the furring strip in the repaired outer wall structure according to the present invention. FIG. 2 is a perspective view showing an embodiment of a joint mounting bracket used in a repaired wall structure constructed with a joint mounting bracket for furring strips in a repaired outer wall structure according to the present invention. FIG. 2 is an explanatory view showing an embodiment of a joint mounting bracket used in a repaired wall structure constructed with a joint mounting bracket for furring strips in a repaired outer wall structure according to the present invention; 1 is a perspective view showing an embodiment of vertical and horizontal connecting metal fittings used in a repaired wall structure constructed with joint fittings for furring strips in a repaired outer wall structure according to the present invention; FIG. FIG. 2 is an explanatory view showing an embodiment of vertical and horizontal connecting metal fittings used in a repaired wall structure constructed with joint fittings for furring strips in a repaired outer wall structure according to the present invention. FIG. 10 is a perspective view showing an embodiment of a hat-shaped furring strip and a general furring strip used in a repaired wall structure constructed with joint fittings for furring strips in a repaired outer wall structure according to the present invention. FIG. 2 is a cross-sectional view showing an embodiment of a new exterior wall material used in a repaired wall structure constructed with fittings for joints of furring strips in the repaired exterior wall structure according to the present invention.

The fittings for joints of furring strips in the repaired exterior wall structure according to the present invention will be described below with reference to the drawings.

Fig. 1, Fig. 2 (a) (plan view), (b) (front view), (c) (right side view), and (d) show the fittings B for the joint portion of furring strips in the repaired outer wall structure according to the present invention. As shown in (EE section cross-sectional view) and (e) (bottom view), a vertical planar fixing surface B1, an upper reinforcing piece B2 projecting the upper end portion of the fixing surface B1 to the outdoor side, and a fixing surface A rising piece B3 protruding horizontally in the middle of B1 to the outdoor side, a construction surface B4 in which the tip of the rising piece B3 hangs downward, and a lower reinforcing piece B5 in which the lower end of the construction surface B4 projects to the indoor side, The fixing surface B1 is formed by a construction position confirming piece B6 protruding outward from the left and right ends of the fixing surface B1 on the side of the construction surface B4, and a plurality of fixing holes B7 formed in the fixing surface B1.

Of course, the widths of the upper reinforcing piece B3, the construction surface B4, and the lower reinforcing piece B5 are formed narrower than the width of the construction surface D3 of the furring strip D shown in FIG. A hat-shaped furring strip D is constructed as shown in . Further, as shown in FIGS. 4, 6 and 9, the construction position confirmation piece B6 is formed to have a dimension that protrudes outward from the furring strip D of the general part.

3(a) to (c) are horizontal cross-sectional views showing the order of construction of a repaired outer wall structure using joint fittings for furring strips in the repaired outer wall structure according to the present invention, where α is the existing outer wall material, β is a fixture, A is a general mounting bracket, B is a joint mounting bracket, C is a vertical and horizontal connecting metal fitting, D is a hat-shaped furring strip, Da is a hat-shaped horizontal furring strip, Db is a hat-shaped vertical furring strip, and E is general Ea is a general horizontal furring strip, Eb is a general vertical furring strip, F is a waterproof sheet (asphalt felt, moisture-permeable waterproof sheet, etc.), and G is a new external wall material.

FIGS. 4(a) to 4(c) to 10(a) and 10(b) are explanatory diagrams showing the state of construction of the repaired outer wall structure using joint fittings for furring strips in the repaired outer wall structure according to the present invention. .

As shown in FIGS. 3(a)-(c) and 4(a)-(c), the general part mounting bracket A is attached to the existing exterior wall material α using the ALC anchor β1.

11, 12 (a) (plan view), (b) (front view), (c) (right side view), (d) (BB section sectional view), (e) ) (cross-sectional view of CC), (f) (cross-sectional view of AA), and (G) (enlarged view of D), the general part mounting bracket A is attached to the existing exterior wall material α or the existing exterior wall A substantially rectangular fixing part A2 for attaching fixing tools β such as screws and anchor bolts for fixing the general part mounting bracket A to the base supporting the material α, and from the vertical direction end part of the fixing part A2 A bent surface A3 raised in the outdoor direction, a construction surface A1 bent so that the end of the bent surface A3 is substantially parallel to the fixing part A2, and a center raised in the outdoor direction from both left and right ends of the fixing part A2 The central piece A4 has a central piece extending portion A5 extending in the vertical direction of the construction surface A1.

On the side facing the back side of the construction surface A1 of the central extension part A5, there is an upper receiving part A6. There is an upper contact portion A7 that contacts the receiving portion A6.

When the construction surface A1 tries to deform in a direction away from the side of the existing exterior wall material α where the fixing part A2 is located, the center piece extending part A5 contacts with the side piece A8 to prevent the deformation. There is a lower receiving part A9. The portion of the side piece A8 that contacts the lower receiving portion A9 is referred to as a lower contact portion A10.

The center piece extending portion A5 has a side portion receiving portion A11 that prevents deformation by coming into contact with the side piece A8 when it is about to deform away from the center of the fixing portion A2. The portion of the side piece A8 that contacts the side receiving portion A11 is a side contact portion A12.

At the lower end of the side piece A8, a protruding piece A13 that is bent and extended outward is formed, and a construction position confirming piece A14 that protrudes further outward is formed. As shown in FIG. 4, when the furring strip E is fixed to the general mounting bracket A, even when the general furring strip E is placed on the general mounting bracket A, the installation position confirmation piece A14 can be fixed to the general mounting bracket. The position of the construction surface A1 of the metal fitting A can be confirmed.

Of course, as shown in FIGS. 6 and 9, the position confirmation piece A14 is formed to have a dimension that protrudes outward from the furring strip E. As shown in FIG.

A fixing hole A15 for inserting a fixing tool β such as a screw or an anchor bolt is formed in the fixing portion A2.

As shown in FIGS. 3(a) to 3(c) to 10(a) and 10(b), the fittings for the joints of furring strips in the repaired outer wall structure according to the present invention are: general part fittings A, joints mounting The hat-shaped furring strip D and the general furring strip E are fixed on the existing outer wall material α via the metal fittings B and the vertical and horizontal connecting metal fittings C, and the new outer wall material G is constructed via the waterproof sheet F thereon. be.

In the figure, α1 is the existing angle, β1 is an ALC anchor, β2 is a long tex screw, β3 is a flat headed tex screw, β4 is a tex screw, D is a hat-shaped furring, Da is a hat-shaped vertical furring, and Db is a hat-shaped horizontal trunk. Edge, E is a general furring strip, Ea is a general vertical furring strip, Eb is a general horizontal furring strip, F is a waterproof sheet, G is a new exterior wall material, S is a spacer, and W is an opening.

13(a), (b), FIG. 14(a) (rear view), (b) (left side view), (c) (front view), (d) (right side view) , (e) (plan view), (f) (FF section end view), and (G) (GG section end view), a substantially rectangular fixing surface C1 having a vertical planar shape and a fixing A support surface C2 and a support surface C3 protruding from adjacent sides of the surface C1 to the outdoor side, a hooking piece C4 protruding by bending the corners of the other two sides to the indoor side, a fixing surface C1, and a support surface C2. It is formed from a plurality of fixing holes C5 formed in the surface C3. The vertical and horizontal connecting fittings C connect the hat-shaped furring strip D and the general furring strip E to improve the mounting strength.

The hat-shaped furring strip D consists of a hat-shaped vertical furring strip Da and a hat-shaped horizontal furring strip Db. As shown in FIG. It is an elongated plate material formed from a rising piece D2 projecting in a direction, a vertical planar construction surface D3, and a fixing hole D4 formed in the fixing surface D1.

The general furring strip E consists of a general vertical furring strip Ea and a general horizontal furring strip Eb. As shown in FIG. A long plate material formed from a rising piece E2 projecting upward, a working surface E3 projecting upward from the tip of the rising piece E2, and a support piece E4 projecting the upper end of the working surface E3 to the indoor side.

Materials for the general mounting bracket A, joint mounting bracket B, vertical and horizontal connecting bracket C, hat-shaped furring strip D, and general furring strip E include highly corrosion-resistant steel such as hot-dip zinc-aluminum-magnesium alloy plating, etc. There are metal ones such as aluminum and stainless steel, but the material is not particularly limited. Metal fittings are generally used because they are mainly made of metal, but they do not have to be made of metal.

As shown in FIGS. 5 and 8, the general part mounting bracket A and joint part mounting bracket B are formed in the general part. By fixing the ALC, the hat-shaped furring strip D, the general furring strip E, and the new outer wall material G follow the slide phenomenon of the ALC during an earthquake (in the case of the dry rocking construction method).

5 to 10, the expansion joint M of the opening W (outer corner not shown) is formed so as not to be connected by the hat-shaped furring D and the general furring E, so that deformation during an earthquake is prevented. It is intended to be able to follow and improve earthquake resistance.

6 and 9, when the general horizontal furring strips Eb are formed on the existing outer wall materials α on the left and right sides of the opening, the hat-shaped vertical furring strips Da are formed on the existing outer wall materials α on the left side of the opening W. It is formed so that the general horizontal furring strip Eb can follow the shaking during an earthquake. The general vertical furring strip Ea formed on the right side of the is formed so that it can follow the shaking during an earthquake. By forming in this way, the foundation of the wall structure to be repaired can be formed without damaging the existing exterior wall material α due to shaking such as an earthquake.

An example of the new exterior wall material G is a metal exterior wall material in which a core material G3 is sandwiched between a metal surface material G1 and a back surface material G2 which are long and made of thin metal plates, as shown in the cross section of FIG. . Further, G4 is a fixing surface for fixing the new exterior wall material G. As shown in FIG. Of course, ceramic or resin-based new external wall materials G can be used.

Metal surface material G1 and back material G2 are metal thin plates, such as iron, aluminum, copper, stainless steel, titanium, aluminum-zinc alloy plated steel plate, galvalume steel plate, enamel steel plate, clad steel plate, laminated steel plate (vinyl chloride steel plate, etc.), sandwich steel plate. (vibration damping steel plate, etc.), vinyl chloride resin, polycarbonate resin, etc. (including, of course, colored plates coated with these in various colors) molded into various shapes by roll molding, press molding, extrusion molding, etc., or An inorganic material is formed into various arbitrary shapes by extrusion molding, press molding, autoclave curing molding, or the like. As the backing material G2, aluminum metallized paper, kraft paper, asphalt felt, metal foil (Al, Fe, Pb, Cu), synthetic resin sheet, rubber sheet, cloth sheet, gypsum paper, aluminum hydroxide paper, glass fiber nonwoven fabric. etc., or a laminate of two or more of them, or a sheet-like material subjected to waterproofing or flame-retardant treatment.

The core material G3 is made of a synthetic resin foam such as polyurethane foam, polyisocyanurate foam, phenol foam, vinyl chloride foam, polyethylene foam, polystyrene foam, urea foam, etc. Especially when fire resistance is required. is formed by mixing an undiluted solution of resol-type phenol, a curing agent, and a foaming agent, discharging the mixture onto the back side of the surface material 1 or the back surface material 2, and heating to cause reaction, foaming, and curing. In the core material 3, various flame retardants such as lightweight aggregate (perlite grains, glass beads, gypsum slag, talc stone, shirasu balloon, aluminum hydroxide, etc.), fibrous materials (glass wool, rock wool, carbon fiber, Graphite, etc.) can be mixed to improve fire resistance and fire resistance. Of course, inorganic materials such as rock wool, glass wool, and ceramic wool may be used as the core material 3 .

Next, referring to FIGS. 3(a) to 3(c) to 10(a) and 10(b), the construction order of the repaired outer wall structure using the furring joint fittings in the repaired outer wall structure according to the present invention. will be explained.

When constructing a new exterior wall material G as shown in FIG. In accordance with the positions where furring strips E, vertical furring strips E1, and horizontal furring strips E2 are to be installed, attach the general fitting fittings A and joint fitting fittings B using ALC anchors β1 and long text screws β2. fixed. A spacer S is formed to adjust unevenness of the existing exterior wall material α.

Next, for the constructed general part mounting bracket A and joint part mounting bracket B, hat-shaped furring strips D, hat-shaped vertical furring strips D1, hat-shaped horizontal furring strips D2, general part furring strips E, and general longitudinal furring strips The furring strip E1 and the horizontal furring strip E2 of the general part are driven and fixed with a flat-headed tex screw β3. Further, as shown in FIGS. 6 and 9, vertical and horizontal connecting metal fittings C are driven and fixed by flat-headed tex screws β3 at required portions.

After completing the construction of the hat-shaped furring strip D, the hat-shaped vertical furring strip D1, the hat-shaped horizontal furring strip D2, the general part E, the general part vertical furring strip E1, and the general part horizontal furring strip E2, the waterproof sheet F is applied to the entire surface. , and finally a long new exterior wall material G whose cross section is shown in FIG. 15 is vertically constructed to complete the construction.

3(a)-(c) and 4(a)-(c) are explanatory diagrams showing the general part, and FIGS. 5-10(a) and 10(b) show the construction state of the opening W It is an explanatory diagram showing.

In particular, in FIGS. 5 to 7 (a) and (b), the existing angle α1 exists in the existing exterior wall material α, and in FIGS. 6 to 8 (a) and (b), the existing angle α1 exists in the existing exterior wall material α. It shows the construction state when it does not exist.

α Existing wall material α1 Existing angle β Fixing tool β1 ALC anchor β2 Long tex screw β3 Flat head tex screw β4 Tex screw A General part mounting bracket B Joint part mounting bracket C Vertical and horizontal connecting metal fitting D Hat-shaped furring strip Da Hat-shaped vertical furring strip Db Hat Horizontal furring strip E General furring strip Ea General vertical furring strip Eb General horizontal furring strip F Waterproof sheet G New exterior wall material M Expansion joint S Spacer W Opening part A1 Construction surface A2 Fixed part A3 Bending surface A4 Center piece A5 Center Single extension A6 Upper receiving part A7 Upper contacting part A8 Side piece A9 Lower receiving part A10 Lower contacting part A11 Side receiving part A12 Side contacting part A13 Protruding piece A14 Installation position checking piece A15 Fixing hole B1 Fixing surface B2 Upper reinforcement Piece B3 Rising piece B4 Construction surface B5 Lower reinforcing piece B6 Construction position confirmation piece B7 Fixing hole C1 Fixing surface C2 Supporting surface C3 Supporting surface C4 Hooking piece C5 Fixing hole D1 Fixing surface D2 Rising piece D3 Construction surface D4 Fixing hole E1 Fixing surface E2 Rising piece E3 Construction surface E4 Support piece G1 Metal surface material G2 Back surface material G3 Core material G4 Fixed surface

Claims (1)

A vertical planar fixing surface, an upper reinforcing piece protruding from the upper end portion of the fixing surface to the outside, a rising piece horizontally protruding to the outside in the middle of the fixing surface, and a tip of the rising piece extending downward. a construction surface that hangs downward, a lower reinforcing piece that protrudes the lower end of the construction surface to the indoor side, and construction position confirmation pieces that project outward from the construction surface at both left and right ends of the fixing surface. Attachment fittings for joints of furring strips in repaired outer wall structures.

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