JP7614028B2 - Corner exterior wall mounting bracket, corner exterior wall structure, and corner remodeling method - Google Patents

Description

The present invention relates to an inside corner exterior wall mounting bracket that is placed in the inside corner of an exterior wall to attach the exterior wall, an inside corner exterior wall structure that uses the inside corner exterior wall mounting bracket, and a method for renovating an inside corner by replacing an exterior wall panel in the inside corner.

Various exterior wall panel fixing structures for fixing inside corners have been proposed. For example, Patent Document 1 discloses an inside corner holding member that holds two exterior wall panels at an inside corner by pinching the outdoor side and the indoor side of each of the two exterior wall panels. Patent Document 2 discloses a connecting metal fitting that is extended with a substantially V-shaped cross section, and discloses that the inside corner is formed by joining both inclined pieces of the connecting metal fitting via a spacer to the side end faces of the two exterior wall panels that form the inside corner. It also discloses a configuration in which a caulking material is filled in the space surrounded by the side end faces of each exterior wall panel, the outer surfaces of the inclined pieces of the connecting metal fitting, and the backup material.

Patent document 3 discloses a structure that has a support member with one end fixed to a column and the other end located at the back of the joint, and a pressing plate that is rotatably arranged on the other end of the support member, and that fixes the exterior wall panel by the pressing plate pressing down on a plate piece formed on the exterior wall panel.

JP 2002-121881 A Publication No. 7-18810 Patent No. 6389549

However, the specifications of the exterior wall panels, the specifications of the columns that secure the exterior wall panels, and the specifications of the window sashes adjacent to the exterior wall panels vary depending on the era in which the building was constructed. Therefore, for example, when replacing exterior wall panels, parts for attaching the exterior wall panels must be prepared for each different specification, resulting in an increase in the number of parts and inefficient inventory management of parts. In addition, the construction procedures differ depending on the era, making renovations less easy to carry out.

The present invention aims to provide an inside corner exterior wall mounting bracket that can accommodate multiple specifications that vary depending on the era when replacing an exterior wall installed in an inside corner, and that can improve the ease of renovation work, an inside corner exterior wall structure that uses the inside corner exterior wall mounting bracket, and a method of renovating an inside corner.

The interior corner exterior wall mounting fixture of the present invention is an interior corner exterior wall mounting fixture that is installed in an interior corner formed by butting together one exterior wall panel having a plate-shaped first frame portion at its side end and the other exterior wall panel or window sash that is arranged at a right angle to the one exterior wall panel, and is characterized by having a mounting bracket that has one end fixed to a column formed in the wall of the interior corner and the other end arranged deep in a joint formed in the interior corner, a first pressing piece that is rotatably attached to the other end of the mounting bracket toward the one exterior wall panel and presses the first frame portion toward the interior, and a second pressing piece that is rotatably attached to the other end of the mounting bracket in the opposite direction to the first pressing piece.

The exterior wall structure for an inside corner of the present invention is an exterior wall structure for an inside corner in which one exterior wall panel having a first frame portion at its side end is butted against the other exterior wall panel or window sash arranged at a right angle to the one exterior wall panel, and is characterized by comprising a column body formed in the wall of the inside corner, a mounting bracket having one end fixed to the column body and the other end arranged deep in a joint formed in the inside corner, and a clamp having a first clamping piece rotatably attached to the other end of the mounting bracket toward the one exterior wall panel and pressing the first frame portion toward the interior, and a second clamping piece rotatably attached to the other end of the mounting bracket in the opposite direction to the first clamping piece.

The exterior wall structure of the present invention for the recessed corner is characterized in that the column is a lip channel steel arranged to open toward one of the exterior wall panels, and further includes a flat back plate inserted into the interior of the column and suspended between the lips of the column, and a spacer held between the lips of the column on the outside of the column, and the mounting bracket is arranged on the opposite side of the back plate with the spacer between them, with the mounting bracket being inserted into an insertion hole formed in the one end and fixed by a bolt screwed into a screw hole formed in the back plate, sandwiching the lip and the spacer between the back plate and the one end.

The exterior wall structure of the present invention for the recessed corner is characterized in that the insertion hole is a long hole that is long in the horizontal direction.

The exterior wall structure for an inside corner of the present invention is an exterior wall structure for an inside corner in which the one exterior wall panel and the other exterior wall panel are butted together, and the other exterior wall panel has a plate-shaped second frame portion at a side end, and the second pressing piece presses the second frame portion toward the interior.

The exterior wall structure for an inside corner of the present invention is an exterior wall structure for an inside corner where the one exterior wall panel and the window sash are butted together, and is characterized by comprising an exterior wall panel side portion formed at the end of the one exterior wall panel and forming a side surface of the joint of the inside corner, a sash inside corner cover fixed to the end of the window sash and approaching the exterior wall panel side portion to adjust the joint width of the inside corner, and a joint material filled between the exterior wall panel side portion and the sash inside corner cover.

The method for reforming an inside corner of the present invention is characterized by comprising the steps of: removing one of the existing exterior wall panels that forms the inside corner; removing the other of the existing exterior wall panels that forms the inside corner; fixing one end of the mounting bracket to the column; fixing the clamp to the other end of the mounting bracket; placing one of the new exterior wall panels in the position where the one of the existing exterior wall panels was removed; placing the other of the new exterior wall panels in the position where the other of the existing exterior wall panels was removed; inserting a tool through the joint formed in the inside corner, manipulating the first frame of the clamp so as to abut against the outdoor side of the first pressing piece of the new exterior wall panel and manipulating the second frame so as to abut against the outdoor side of the second pressing piece; and filling a joint material between the side of the one of the new exterior wall panels and the side of the other of the new exterior wall panels.

The method for reforming an inside corner of the present invention is characterized by comprising the steps of removing one of the existing exterior wall panels that forms the inside corner, fixing a sash inside corner cover to the end of the window sash, fixing the one end of the mounting bracket to the column, fixing the clamping metal fitting to the other end of the mounting bracket, placing one new exterior wall panel in the position where the one existing exterior wall panel was removed, inserting a tool through the joint formed in the inside corner and manipulating the first clamping piece of the clamping metal fitting so as to abut against the outdoor side of the first frame part of the new exterior wall panel, and filling a joint material between the side part of the one new exterior wall panel and the sash inside corner cover.

According to the present invention, the mounting bracket is fixed at one end to a column formed in the wall of the inside corner, and the other end is disposed at the back of the joint formed in the inside corner. The clamping bracket is attached to the other end of the mounting bracket so as to be rotatable toward one of the exterior wall panels, and is formed with a first clamping piece that holds the first frame of the exterior wall panel toward the interior, and a second clamping piece that is attached so as to be rotatable in the opposite direction to the first clamping piece. For example, by fixing one of the exterior wall panels that make up the inside corner with the first clamping piece and fixing the other exterior wall panel with the second clamping piece, it is possible to fix two exterior wall panels with one inside corner exterior wall mounting bracket. It is also possible to fix one of the exterior wall panels that make up the inside corner with the first clamping piece, while leaving the existing window sash or exterior wall panel on the other side as it is.

According to the exterior wall structure for the recessed corner of the present invention, one end of the mounting bracket is fixed to the pillar, the other end of which is positioned at the back of the joint, and the clamp formed on the other end of the mounting bracket has a first clamping piece that presses the first frame portion of one exterior wall panel toward the interior, and a second clamping piece that is attached so that it can rotate in the opposite direction to the first clamping piece. Therefore, while one exterior wall panel is fixed with the first clamping piece, the other exterior wall panel can be fixed by pressing it with the second clamping piece, and the existing window sash can be placed as is.

The exterior wall structure for the inside corner of the present invention further includes a back plate that is inserted inside the lip channel steel column and installed between the lips, and a spacer that is held between the lips on the outside of the column. One end of the mounting bracket is placed on the opposite side of the back plate across the spacer, and a bolt is inserted into an insertion hole formed in one end of the mounting bracket and screwed into a screw hole formed in the back plate, sandwiching the lip and spacer between the back plate and one end, and the mounting bracket is fixed. Therefore, the position of the mounting bracket can be adjusted depending on the thickness of the spacer, and the same clamping hardware can be used to accommodate various differences in specifications, such as differences in the dimensions of columns depending on the era.

According to the exterior wall structure of the present invention for the recessed corner, the insertion hole formed at one end of the mounting bracket is a long hole that is long in the horizontal direction, so the position of the mounting bracket can be adjusted and the same clamping hardware can be used to accommodate the various differences in specifications that vary depending on the era.

According to the exterior wall structure for the recessed corner of the present invention, the first pressing piece presses the first frame portion formed on one exterior wall panel toward the interior, while the second pressing piece presses the second frame portion formed on the other exterior wall panel toward the interior. This allows two exterior wall panels to be fixed with one pressing bracket, making construction easier.

According to the exterior wall structure for the inside corner of the present invention, the sash inside corner cover is fixed to the end of the window sash and approaches the side of the exterior wall panel to adjust the joint width of the inside corner. Therefore, even if the joint width between the existing window sash and the newly installed exterior wall panel is too long due to exterior wall replacement renovation, the installation of the sash inside corner cover can shorten the joint width and ensure an appropriate joint fit.

According to the method for reforming an inside corner of the present invention, after removing both exterior wall panels forming the inside corner and fixing one end of the mounting bracket to the column, a clamping metal fitting is fixed to the other end of the mounting bracket, one new exterior wall panel is placed in the position where one existing exterior wall panel was removed, and the other new exterior wall panel is placed in the position where the other existing exterior wall panel was removed, a tool is inserted through the joint between the two new exterior wall panels, and the first frame part of one exterior wall panel is operated so as to abut against the outdoor side of the first pressing piece of the clamping metal fitting, and the second frame part is operated so as to abut against the outdoor side of the second pressing piece, and a joint material is filled between the side part of one new exterior wall panel and the side part of the other new exterior wall panel, so that the two new exterior wall panels can be fixed with one clamping metal fitting, and the number of parts can be reduced while improving workability.

According to the method for reforming inside corners of the present invention, the joint width can be adjusted by fixing a sash inside corner cover to the end of the window sash, so that the joint can be properly fitted by filling the gap between the side of one of the newly installed exterior wall panels and the sash inside corner cover with joint material.

FIG. 2 is a cross-sectional view illustrating the overall configuration of an exterior wall structure of an inside corner portion of the first embodiment, with joint material omitted. FIG. 2 is a cross-sectional view of an inside corner exterior wall mounting bracket, with a portion of the bracket omitted, for illustrating joint materials and the like of an inside corner exterior wall structure of the first embodiment. 4A is a perspective view illustrating the external configuration of a mounting bracket, and FIG. 4B is a perspective view illustrating the external configuration of a pressing metal fitting. FIG. 13 is an exploded perspective view illustrating the state in which the inside corner exterior wall mounting bracket is attached to a pillar. FIG. 13 is a diagram illustrating a configuration in which the mounting position of the mounting bracket can be adjusted by shifting it in the outward direction of the surface of one of the exterior wall panels by using an elongated insertion hole. FIG. 13 is a diagram illustrating a configuration in which an exterior wall structure for an inside corner does not use a spacer, and the mounting bracket is adjusted by shifting it in the in-plane direction of one of the exterior wall panels. 13 is a diagram illustrating a pressing fitting in which a first pressing piece and a second pressing piece are fixed so as to be able to swing. FIG. A diagram illustrating an L-shaped cross-section sash inside corner cover that can be attached to window sashes of different specifications. FIG. 2 is a diagram showing an inside corner formed by an existing exterior wall panel and an existing window sash. (A) is a diagram showing the state in which one of the existing exterior wall panels at the inside corner has been removed and a sash inside corner cover has been fixed to the end of the window sash, and (B) is a partially enlarged diagram of (A) showing the state in which a hole is drilled in the inside corner stop plate into which a mounting bracket can be inserted. FIG. 13 is a diagram showing the state in which the mounting bracket is fixed to the column in the method for reforming an inside corner of the first embodiment. FIG. 11 is a diagram illustrating the state in which a newly installed exterior wall panel is positioned and the first frame portion is pressed against the inside corner stop plate to fix the newly installed exterior wall panel in the method for renovating an inside corner portion of the first embodiment. FIG. 11 is a cross-sectional view illustrating the overall configuration of an exterior wall structure of an inside corner portion of a second embodiment, with joint material omitted. FIG. 11 is a cross-sectional view of an inside corner exterior wall mounting bracket, with a portion of the inside corner exterior wall structure of the second embodiment omitted, illustrating joint materials and the like. FIG. 13 is a diagram illustrating an inside corner portion where existing exterior wall panels are formed on both sides. FIG. 13 is a diagram illustrating the state after both existing exterior wall panels forming the inside corner have been removed.

First Embodiment
Hereinafter, a first embodiment of an inside corner exterior wall mounting bracket 1 according to the present invention, an inside corner exterior wall structure 2 using said inside corner exterior wall mounting bracket 1, and a method for remodeling an inside corner for constructing the inside corner exterior wall structure 2 will be described with reference to Figs. 1 to 12. The building in which an inside corner is formed in this embodiment is a light-gauge steel-framed building in which an exterior wall panel is fixed to a lip channel steel column 3. The inside corner exterior wall structure 2 in this embodiment is a structure in which a new exterior wall panel 4a is installed using an existing framework, and the inside corner is formed by butting one exterior wall panel 4a against the other window sash 5.

As shown in Figures 1 and 2, the exterior wall structure 2 of the inside corner portion includes a column 3 formed in the wall of the inside corner portion, an inside corner stop plate 6 fixed to the column 3 and placed on the indoor side of the inside corner portion, an inside corner exterior wall mounting bracket 1 for mounting an exterior wall panel 4a to the inside corner portion, one exterior wall panel 4a having a plate-shaped first frame portion 40 at its side end, and the other window sash 5 placed at a right angle to the one exterior wall panel 4a. Note that in Figure 1, the illustration of the joint material 7, inside corner insulation material 8, and joint backup material 9 described later is omitted for the convenience of illustrating the inside corner exterior wall mounting bracket 1. Also, in Figure 2, the illustration of the inside corner exterior wall mounting bracket 1 is partially omitted for the convenience of illustrating the joint material 7, inside corner insulation material 8, and joint backup material 9.

The column 3 is a steel column 3 that forms part of the structural frame of the building and extends vertically. In this embodiment, the column 3 is a lip channel steel that is arranged to open toward one of the exterior wall panels 4a. The column 3 is, for example, part of a framework formed into a rectangular frame, and is connected with bolts and nuts to another column of lip channel steel that is erected on the indoor side of the top of the inside corner. Note that the arrangement and shape of the other column to which the column 3 is connected are not limited to those described above, and may vary depending on the age of the building.

The inside corner stopper 6 is a steel plate with an L-shaped horizontal cross section, is placed at the back of the inside corner, and serves as a base for fixing one exterior wall panel 4a and the other window sash 5 to the inside corner.

The corner exterior wall mounting bracket 1 has a mounting bracket 10 as shown in FIG. 3(A) and a clamping bracket 20 as shown in FIG. 3(B). As shown in FIG. 1 and FIG. 4, one end 12 of the mounting bracket 10 is fixed to the column 3. Inside the column 3 to which the one end 12 of the mounting bracket 10 is fixed, a back plate 30 with a screw hole 32 formed in the center is provided. The back plate 30 is a flat plate arranged so as to be spanned between the two lips of the column 3 inside the column 3. On the outside of the column 3, a spacer 31 is provided on the opposite side to the back plate 30, sandwiching the two lips and opening of the column 3. The spacer 31 is formed by bending the upper and lower edges of a steel flat plate, and notches 33 are formed on both the left and right ends of the bent upper and lower edges, and the notches 33 are aligned with the lips of the column 3 to hold the column 3 between the two lips outside the column 3. A through hole 34 is formed in the center of the spacer 31.

One end 12 of the mounting bracket 10 is flat with an insertion hole 13 formed in the center. A fixing bolt 14 is inserted into the insertion hole 13. The insertion hole 13 is a long hole that is long in the horizontal direction. The fixing bolt 14 is inserted into the insertion hole 13 formed in the one end 12 of the mounting bracket 10 and the through hole 34 formed in the spacer 31, and is screwed into the screw hole 32 of the back plate 30. By tightening the fixing bolt 14, the lip of the column 3 and the spacer 31 are sandwiched between the back plate 30 and the one end 12 of the mounting bracket 10, and the mounting bracket 10 is fixed to the column 3. At this time, since the insertion hole 13 formed in the one end 12 of the mounting bracket 10 is a long hole that is long in the horizontal direction, the mounting bracket 10 can be adjusted by shifting its mounting position in the out-of-plane direction of one of the exterior wall panels 4a, as shown in Figures 5 (A) and (B). In addition, in the exterior wall structure 2 of the recessed corner, it is possible to prepare spacers 31 of different thicknesses, or, as shown in FIG. 6, to not use spacers 31, and to adjust the mounting position of the mounting bracket 10 by shifting it in the in-plane direction of one of the exterior wall panels 4a. This makes it possible to adjust the position of the mounting bracket 10 to fit the different specifications, even if the specifications of the recessed corner differ depending on the year the building was constructed, and to fix one of the exterior wall panels 4a.

As shown in Figures 1 and 3(B), the mounting bracket 10 is bent from one end 12 at a substantially right angle toward the top of the recessed corner, and then bent back at approximately 45 degrees, with the other end 15 being positioned at the back of the joint formed in the recessed corner. The other end 15 of the mounting bracket 10 has a bolt hole 16 formed therein into which the mounting bolt 24 of the clamping bracket 20 is inserted and screwed.

The clamping bracket 20 has a base 21 that is fastened and fixed to the outdoor side of the other end 15 of the mounting bracket 10, and a first clamping piece 22 and a second clamping piece 23 that are rotatably fixed to the base 21. The base 21 is a vertically long flat plate, and is provided with a mounting hole 25 into which a mounting bolt 24 is inserted for fixing to the mounting bracket 10. As shown in Figures 3(B) and 7, a first shaft portion 26 that swingably fixes the first clamping piece 22 is formed at a position above the mounting hole 25 of the base 21. A second shaft portion 27 that swingably fixes the second clamping piece 23 is formed at a position below the mounting hole 25 of the base 21.

The first pressing piece 22 has a base end fixed to the first shaft 26 so as to be able to swing, and is bent from the base end to hold the plate-shaped first frame portion 40 formed at the side end of one of the exterior wall panels 4a in the indoor direction. The second pressing piece 23 has a shape similar to the first pressing piece 22, and is fixed to the second shaft 27 so as to be able to swing. Each side edge of the base 21 is partially bent toward the outdoor direction, and a restricting portion 28 is formed which restricts the swing range of the first pressing piece 22 to the range on the one exterior wall panel 4a side, and restricts the swing range of the second pressing piece 23 to the range on the other window sash 5 side.

As shown in FIG. 1, in this embodiment, one of the exterior wall panels 4a at the inside corner is a new exterior wall panel 4a that is newly installed after removing the existing exterior wall panel 50. This exterior wall panel 4a has a panel body 41, a first frame portion 40 formed on the periphery of the back surface of the panel body 41, and a heat insulating material 42 provided inside the first frame portion 40 on the back surface side of the panel body 41. The first frame portion 40 is a groove shape that opens toward the outside in the in-plane direction of one of the exterior wall panels 4a, and one side panel is fixed to the panel body 41, and the other side panel is pressed against the inside corner stop plate 6 toward the interior direction by the first pressing piece 22.

The other window sash 5 at the inside corner is, for example, a window sash 5 that forms a window by fitting a sliding window screen into it. The window sash 5 is not limited to a sliding window, but may be a window that is opened in other ways, or may be a fixed window. A sash stop plate 51 with a bent end formed into an L shape is fixed to the inside corner stop plate 6 with a bolt and nut, and this sash stop plate 51 fixes the window sash 5 by sandwiching a locking piece 52 formed to protrude laterally from a position on the indoor side of the side edge of the window sash 5 between the inside corner stop plate 6.

A sash inside corner cover 53 is fixed to the end of the window sash 5 on the outdoor side of the locking piece 52 on the side edge. The sash inside corner cover 53 is shaped by abutting one plate surface of an unequal-sided L-angle 54 and one side surface of a groove-shaped longitudinal member 55 against each other. The sash inside corner cover 53 is fixed to each other so that the other plate surface of the L-angle 54 and the bottom surface of the groove steel face the outdoor side and form a flat surface without steps. The sash inside corner cover 53 is formed by fixing the L-angle 54 to the corner on the outdoor side of the window sash 5 and extending the longitudinal member 55 so as to approach the side portion of one of the exterior wall panels 4a. There are several types of sash inside corner covers 53 with different dimensions and shapes depending on the specifications of the window sash 5, and they are adjusted to correspond to the difference in the joint width of the inside corner due to the specifications of the window sash 5, so that the joint width is the same even if the specifications are different. The sash inside corner cover 53 is not limited to a combination of an L-angle 54 and a longitudinal member 55, but may be a long metal body with an L-shaped cross section, as shown in Figure 8, depending on the specifications of the window sash 5.

At the back of the joint of the inside corner formed by the side part of the exterior wall panel 4a and the sash inside corner cover 53, as shown in FIG. 2, a plate-shaped inside corner insulation material 8 is provided so as to abut against the inside corner stop plate 6, and a joint backup material 9 is arranged on the outdoor side of the inside corner insulation material 8 in an L-shaped cross section over the entire vertical length of one exterior wall panel 4a and the other window sash 5. Then, for example, a wet joint material 7 is filled between the side part of the exterior wall panel 4a and the sash inside corner cover 53. In addition, the joint between the side part of the exterior wall panel 4a and the sash inside corner cover 53 may be filled with a dry joint material instead of the wet joint material 7. In this way, the joint width is adjusted by the sash inside corner cover 53, so that the joint can be made to have an appropriate width and depth, and by filling the joint material 7, it is possible to exhibit appropriate performance such as watertightness and fire resistance for an appropriate period of time.

Next, a method for renovating an inside corner by constructing the exterior wall structure 2 for the inside corner configured as described above will be described. As shown in FIG. 9, the method for renovating an inside corner in this embodiment is a method for renovating an inside corner formed from an existing exterior wall panel 50 and an existing window sash 5, and is a method for replacing the existing exterior wall panel 50 with a new exterior wall panel 4a.

The method for remodeling an inside corner is to first remove one of the existing exterior wall panels 50 that form the inside corner, as shown in Figures 9 and 10 (A). Specifically, the dry joint material 57 fixed to the inside corner is removed, the exterior wall fixing plate 56 that fixes the existing exterior wall panel 50 is removed, and the existing exterior wall panel 50 is removed.

Then, a sash inside corner cover 53 prepared according to the specifications of the window sash 5 is fixed to the end of the window sash 5. The sash inside corner cover 53 has double-sided tape at the position where it abuts the window sash 5, and after temporary fixing with the double-sided tape, the sash inside corner cover 53 is fixed to the window sash 5 by driving in a screw. In this embodiment, the L-angle 54 that constitutes the sash inside corner cover 53 is fixed to the corner on the outdoor side of the window sash 5, and the longitudinal member 55 is fixed so as to extend close to the side portion of one of the exterior wall panels 4a.

Next, as shown in FIG. 10(B), a hole into which the mounting bracket 10 can be inserted is machined in the inside corner stop plate 6. The mounting bracket 10 is inserted into the hole and placed in an appropriate position. At this time, as shown in FIG. 4 and FIG. 11, the back plate 30 is placed on the indoor side of the inside corner stop plate 6 so as to be installed inside the column 3, and a spacer 31 is placed on the outside of the column 3. The fixing bolt 14 is inserted from the insertion hole 13 formed in the center of one end 12 of the mounting bracket 10, and the fixing bolt 14 is screwed into the screw hole 32 of the back plate 30 through the through hole 34 formed in the spacer 31, and the fixing bolt 14 is tightened to sandwich the lip of the column 3 and the spacer 31 between the back plate 30 and one end 12 of the mounting bracket 10, and the mounting bracket 10 is fixed to the column 3. Depending on the dimensions of the column 3, the mounting bracket 10 may be fixed directly to the column 3 without placing the spacer 31, as shown in FIG. 6. Depending on the dimensions of the column 3, the spacer 31 may be changed to one with a different thickness. The mounting position of the mounting bracket 10 can be adjusted by changing the thickness of the spacer 31 or by not providing the spacer 31, and the adjustment can be made by making the insertion hole 13 formed in one end 12 of the mounting bracket 10 a horizontally long hole.

Then, insert the mounting bolt 24 into the mounting hole 25 provided in the base 21 of the clamping metal fitting 20 to fix the clamping metal fitting 20 to the other end 15 of the mounting bracket 10. Next, as shown in FIG. 12, place one of the new exterior wall panels 4a at the position where the existing exterior wall panel 50 was removed, insert a tool such as a wrench (not shown) through the joint formed between the side portion of one of the exterior wall panels 4a and the sash inside corner cover 53, rotate the first pressing piece 22 of the clamping metal fitting 20, and operate it so that it abuts against the outdoor side of the first frame portion 40 of one of the new exterior wall panels 4a, pressing the first frame portion 40 against the inside corner stop plate 6 to fix the new exterior wall panel 4a.

Then, as shown in FIG. 2, an inside corner insulation material 8 is provided at the back of the joint between the side portion of one of the new exterior wall panels 4a and the sash inside corner cover 53 so as to abut against the inside corner stop plate 6, and a joint backup material 9 is placed on the outdoor side of the inside corner insulation material 8. Then, joint material 7 is filled between the side portion of the exterior wall panel 4a and the sash inside corner cover 53, completing the inside corner reform method of this embodiment. According to this inside corner reform method, the joint width can be adjusted by fixing the sash inside corner cover 53 to the end of the window sash 5, so that the joint material 7 can be filled between the side portion of one of the new exterior wall panels 4a and the sash inside corner cover 53 to achieve an appropriate joint fit.

Second Embodiment
Next, an inside corner exterior wall mounting bracket 1 according to a second embodiment of the present invention, an inside corner exterior wall structure 2 using the inside corner exterior wall mounting bracket 1, and a second embodiment of a method for remodeling an inside corner for constructing the inside corner exterior wall structure 2 will be described with reference to Figures 13 to 16. Note that the same components as those in the first embodiment are given the same reference numerals and will not be described. The inside corner exterior wall structure 2 in this embodiment is a structure in which new exterior wall panels 4b and 4c are installed using an existing framework, and an inside corner is formed by butting one exterior wall panel 4b against the other exterior wall panel 4c.

As shown in Fig. 13, the exterior wall structure 2 of the inside corner portion includes a column 3 formed in the wall of the inside corner portion, an inside corner stop plate 6 fixed to the column 3 and arranged on the indoor side of the inside corner, an inside corner exterior wall mounting bracket 1 for mounting the exterior wall panels 4b and 4c to the inside corner portion, one exterior wall panel 4b having a groove-shaped first frame portion 40 opening laterally at its side end, and the other exterior wall panel 4c having a groove-shaped second frame portion 43 opening laterally at its side end. In Fig. 13, for the convenience of illustrating the inside corner exterior wall mounting bracket 1, the description of the joint material 7, inside corner insulation material 8, and joint backup material 9 described later is omitted. The column 3 and the inside corner stop plate 6 have the same configuration as in the first embodiment, so a detailed description is omitted. In addition, the inside corner exterior wall mounting bracket 1 has a mounting bracket 10 and a clamping bracket 20, as in the first embodiment. As in the first embodiment, the fixing bolt 14 is inserted into the insertion hole 13 formed in one end 12 of the mounting bracket 10 and the through hole 34 formed in the spacer 31, and screwed into the screw hole 32 in the back plate 30. By tightening the fixing bolt 14, the lip of the column 3 and the spacer 31 are sandwiched between the back plate 30 and one end 12 of the mounting bracket 10, and the mounting bracket 10 is fixed to the column 3.

The shapes of the mounting bracket 10, back plate 30, and spacer 31 are the same as those in the first embodiment. The insertion hole 13 provided in the center of one end 12 of the mounting bracket 10 is a horizontally long hole, so that the mounting position of the mounting bracket 10 can be adjusted by shifting it in the out-of-plane direction of one of the exterior wall panels 4b. By preparing multiple spacers 31 of different thicknesses or not using the spacer 31, the mounting position of the mounting bracket 10 can also be adjusted by shifting it in the in-plane direction of one of the exterior wall panels 4b. This makes it possible to adjust the position of the mounting bracket 10 to suit different specifications, even if the specifications of the recessed corner differ depending on the year the building was constructed, and to fix one of the exterior wall panels 4b.

The other end 15 of the mounting bracket 10 is placed at the back of the joint of the inside corner, as in the first embodiment, and a clamp 20 is fixed to it. As in the first embodiment, the clamp 20 has a base 21 that is fastened and fixed to the outdoor side of the other end 15 of the mounting bracket 10, a first clamp piece 22 that is rotatably fixed to the base 21, and a second clamp piece 23.

One exterior wall panel 4b and the other exterior wall panel 4c of the inside corner are new exterior wall panels 4b, 4c that were installed after removing the existing exterior wall panel 50. One exterior wall panel 4b and the other exterior wall panel 4c have the same configuration, one exterior wall panel 4b has a panel body 41, a first frame portion 40 formed on the periphery of the back surface of the panel body 41, and a heat insulating material 42 provided inside the first frame portion 40 on the back surface side of the panel body 41, and the other exterior wall panel 4c has a panel body 41, a second frame portion 43 formed on the periphery of the back surface of the panel body 41, and a heat insulating material 42 provided inside the second frame portion 43 on the back surface side of the panel body 41. The first frame portion 40 and the second frame portion 43 are groove-shaped and open toward the outside of the in-plane direction of the respective exterior wall panels 4b, 4c, with one side panel fixed to the panel body 41 and the other side panel pressed against the inside corner stop plate 6 toward the interior by the first pressing piece 22 or the second pressing piece 23.

In this way, the first frame portion 40 of one exterior wall panel 4b is pressed against the corner stop plate 6 toward the interior by the first pressing piece 22 of the pressing metal fitting 20, and the second frame portion 43 of the other exterior wall panel 4c is pressed against the corner stop plate 6 toward the interior by the second pressing piece 23 of the pressing metal fitting 20. This allows the exterior wall panels 4b and 4c on both sides to be fixed with a single pressing metal fitting 20, improving workability.

As shown in FIG. 14, a plate-shaped inside corner insulation material 8 is provided at the back of the joint of the inside corner formed by the side portion of one exterior wall panel 4b and the side portion of the other exterior wall panel 4c so as to abut against the inside corner stop plate 6, and a joint backup material 9 is arranged on the outdoor side of the inside corner insulation material 8 with an L-shaped cross section over the entire vertical length of one exterior wall panel 4b and the other exterior wall panel 4c. Then, for example, a wet joint material 7 or a dry joint material is filled between the side portions of the two exterior wall panels 4b and 4c. Note that in FIG. 14, the illustration of the inside corner exterior wall mounting bracket 1 is partially omitted for the convenience of illustrating the joint material 7, inside corner insulation material 8, and joint backup material 9.

Next, we will explain the method of renovating an inside corner by constructing the exterior wall structure 2 of the inside corner of the second embodiment configured as described above. The method of renovating an inside corner of this embodiment is a method of renovating an inside corner in which existing exterior wall panels 50 are formed on both sides, as shown in Figure 15, and is a method of renovating both existing exterior wall panels 50 by replacing them with new exterior wall panels 4b and 4c, respectively.

The method for remodeling an inside corner is to first remove one of the existing exterior wall panels 50 that form the inside corner, as shown in Figure 16. Then, the other existing exterior wall panel 50 that forms the inside corner is also removed. Specifically, the dry joint material 57 fixed to the inside corner is removed, the exterior wall fixing plates 56 that fix the existing exterior wall panels 50 on both sides are removed, and the existing exterior wall panels 50 on both sides are removed.

Then, a hole into which the mounting bracket 10 can be inserted is machined in the inside corner stop plate 6. The mounting bracket 10 is inserted into the hole, and is positioned in an appropriate position so that the other end 15 of the mounting bracket 10 is positioned at the back of the joint of the inside corner. Then, on the indoor side of the inside corner stop plate 6, a back plate 30 is positioned so as to be installed inside the column 3, and a spacer 31 is positioned on the outside of the column 3. A fixing bolt 14 is inserted from an insertion hole 13 formed in the center of one end 12 of the mounting bracket 10, and the fixing bolt 14 is screwed into a screw hole 32 of the back plate 30 through a through hole 34 formed in the spacer 31, and the fixing bolt 14 is tightened to sandwich the lip of the column 3 and the spacer 31 between the back plate 30 and one end 12 of the mounting bracket 10, and the mounting bracket 10 is fixed to the column 3. As in the first embodiment, depending on the dimensions of the column 3, the mounting bracket 10 may be fixed directly to the column 3 without placing a spacer 31. Depending on the dimensions of the column 3, the spacer 31 may be changed to one with a different thickness. The mounting position of the mounting bracket 10 can be adjusted by changing the thickness of the spacer 31 or by not providing the spacer 31, and the adjustment can be made by making the insertion hole 13 formed in one end 12 of the mounting bracket 10 a horizontally long hole.

Then, the mounting bolt 24 is inserted into the mounting hole 25 provided in the base 21 of the clamping metal fitting 20, and the clamping metal fitting 20 is fixed to the other end 15 of the mounting bracket 10. Next, as shown in FIG. 13, one new exterior wall panel 4b is placed in the position where one existing exterior wall panel 50 was removed, and the other new exterior wall panel 4c is placed in the position where the other existing exterior wall panel 50 was removed. Then, a tool such as a wrench (not shown) is inserted through the joint formed between the side portion of one exterior wall panel 4b and the side portion of the other exterior wall panel 4c, and the first clamping piece 22 of the clamping metal fitting 20 is rotated and operated so as to abut against the outdoor side of the first frame portion 40 of one new exterior wall panel 4b, and the first frame portion 40 is pressed against the inside corner stop plate 6 to fix one new exterior wall panel 4b. Similarly, a tool such as a wrench (not shown) is inserted through the joint formed between the side of one exterior wall panel 4b and the side of the other exterior wall panel 4c, and the second pressing piece 23 of the pressing fitting 20 is rotated and operated so that it abuts against the outdoor side of the second frame part 43 of the other new exterior wall panel 4c, pressing the second frame part 43 against the inside corner stop plate 6 to fix the other new exterior wall panel 4c.

Then, as shown in FIG. 14, an inside corner insulation material 8 is provided at the back of the joint between the side portion of one new exterior wall panel 4b and the side portion of the other new exterior wall panel 4c so as to abut against the inside corner stop plate 6, and a joint backup material 9 is placed on the outdoor side of the inside corner insulation material 8. Then, joint material 7 is filled between the side portions of both exterior wall panels 4b and 4c, completing the inside corner reform method of the second embodiment. According to this inside corner reform method, one exterior wall panel 4b and the other exterior wall panel 4c are each fixed by a single inside corner exterior wall mounting bracket 1, which improves workability.

It goes without saying that the embodiment of the present invention is not limited to the above-mentioned embodiment, and can be modified as appropriate without departing from the scope of the concept of the present invention.

The inside corner exterior wall mounting bracket 1, the inside corner exterior wall structure 2, and the inside corner renovation method of the present invention are suitable for use when replacing the exterior walls of the inside corners of a house.

REFERENCE SIGNS LIST 1 Exterior wall mounting bracket for inside corner 2 Exterior wall structure for inside corner 3 Column 4a One exterior wall panel 4b One exterior wall panel 4c Other exterior wall panel 5 Window sash 7 Joint material 10 Mounting bracket 12 One end 13 Insertion hole 14 Fixing bolt 15 Other end 20 Retaining bracket 22 First retaining piece 23 Second retaining piece 30 Back plate 31 Spacer 40 First frame 43 Second frame 53 Sash inside corner cover

Claims (8)

An exterior wall mounting fixture for an inside corner formed by butting together an exterior wall panel having a first frame portion at a side end and another exterior wall panel or a window sash disposed at a right angle to the exterior wall panel,
a mounting bracket having one end fixed to a column formed in the wall of the recessed corner portion and the other end disposed deep in a joint formed in the recessed corner portion;
an exterior wall mounting bracket for a recessed corner, comprising: a clamping bracket having: a first clamping piece that is rotatably attached to the other end of the mounting bracket toward one of the exterior wall panels and presses the first frame portion toward the interior of the room; and a second clamping piece that is rotatably attached to the other end of the mounting bracket in the opposite direction to the first clamping piece. An exterior wall structure of an inside corner in which one exterior wall panel having a first frame portion at a side end and another exterior wall panel or window sash arranged at a right angle to the one exterior wall panel are butted against each other,
A pillar formed in the wall of the inside corner portion;
A mounting bracket having one end fixed to the column and the other end disposed deep inside a joint formed in the recessed corner portion;
a first pressing piece that is rotatably attached to the other end of the mounting bracket toward the one of the exterior wall panels and presses the first frame portion toward the interior of the room, and a second pressing piece that is rotatably attached to the other end of the mounting bracket in the opposite direction to the first pressing piece;
An exterior wall structure for an inside corner comprising: The column is a lip channel steel arranged to open toward the one exterior wall panel,
A flat back plate is inserted into the column and spans between the lips of the column;
a spacer held between the lips of the pillar on an exterior of the pillar;
The mounting bracket has one end disposed on the opposite side of the back plate with the spacer therebetween,
The exterior wall structure of the recessed corner portion as described in claim 2, characterized in that the mounting bracket is fixed by clamping the lip and the spacer between the back plate and the one end portion using a fixing bolt that is inserted into an insertion hole formed in the one end portion and screwed into a screw hole formed in the back plate. The exterior wall structure of an inside corner as described in claim 3, characterized in that the insertion hole is a long hole that is long in the horizontal direction. An exterior wall structure of an inside corner where the one exterior wall panel and the other exterior wall panel are butted against each other,
The other exterior wall panel has a second frame portion at a side end portion,
5. The exterior wall structure of claim 2, wherein the second pressing piece presses the second frame portion toward the interior of the building. An exterior wall structure of an inside corner where the one exterior wall panel and the window sash are butted against each other,
An exterior wall panel side portion formed at an end portion of the one exterior wall panel and serving as a side surface of the joint of the inside corner portion;
A sash inside corner cover that is fixed to an end portion of the window sash and approaches a side portion of the exterior wall panel to adjust a joint width of the inside corner portion;
A joint material is filled between the side surface of the exterior wall panel and the sash inside corner cover;
The exterior wall structure of an inside corner portion according to any one of claims 2 to 4, further comprising: A method for remodeling an inside corner portion by constructing the exterior wall structure of the inside corner portion according to claim 5,
A step of removing one of the existing exterior wall panels that forms the inside corner portion;
A step of removing the other existing exterior wall panel that forms the inside corner portion;
fixing the one end of the mounting bracket to the pillar;
a step of fixing the pressing metal fitting to the other end of the mounting bracket;
a step of placing one new exterior wall panel at a position from which the one existing exterior wall panel was removed;
a step of placing the other newly installed exterior wall panel at the position from which the other existing exterior wall panel was removed;
a step of inserting a tool through the joint formed in the inside corner portion, and manipulating the first pressing piece of the pressing fitting so as to abut against the outdoor side of the first frame portion of the one newly-installed exterior wall panel, and manipulating the second pressing piece so as to abut against the outdoor side of the second frame portion of the other newly-installed exterior wall panel;
A method for renovating an inside corner, comprising the steps of: filling a gap between a side portion of one of the newly installed exterior wall panels and a side portion of the other of the newly installed exterior wall panels with a joint material. A method for remodeling an inside corner portion by constructing the exterior wall structure of the inside corner portion according to claim 6,
A step of removing one of the existing exterior wall panels that forms the inside corner portion;
fastening a sash inside corner cover to an edge of the window sash;
fixing the one end of the mounting bracket to the pillar;
a step of fixing the pressing metal fitting to the other end of the mounting bracket;
a step of placing one new exterior wall panel at a position from which the one existing exterior wall panel was removed;
a step of inserting a tool through the joint formed in the inside corner portion and manipulating the first pressing piece of the pressing fitting so as to abut against the outdoor side of the first frame portion of the newly installed exterior wall panel;
A method for renovating an inside corner, comprising the step of filling a gap between a side portion of one of the newly installed exterior wall panels and the sash inside corner cover with joint material.

Images