Wall structure

Abstract

To provide a wall structure allowing a furring to be placed at a desired position and panel locking is less likely to be hindered by a decorative face material and the furring.SOLUTION: In a wall structure 1, multiple panels 2 with a rectangular surface are arranged in vertical and lateral directions with long sides 21 and short sides 22 being adjacent to each other respectively. In addition, decorative face materials 3 with a roughly rectangular surface are attached onto a front surface side of the panels 2 via furrings 4. Auxiliary furrings 11 to be each connected to the furring 4 via a connector member 12 are provided at positions where no furring 4 is located in a mounting position of the decorative face material 3.SELECTED DRAWING: Figure 12

Description

Technical Field

[0001] The present invention relates to a wall structure. More specifically, it relates to a wall structure including a panel, a body edge, and a decorative facing material.

Background Art

[0002] Patent Document 1 describes an outer wall construction structure that is easy to construct for an existing wall such as a concrete panel. This outer wall construction structure is composed of a metal base structure formed by fixing a metal body edge to an existing wall having an outer wall plate holding ability, and a plurality of outer wall plates fastened to the metal base structure. And, a protruding corner column is fastened to the metal base structure at the corner portion of the existing wall. When fastening the protruding corner column to the metal base structure, a corner fastening fitting is used. The corner fastening fitting has an upper contact portion with a screw hole drilled above the substrate portion. While inserting a screw into the screw hole, the screw is screwed into the metal body edge fixed to the existing wall, thereby fixing the corner fastening fitting to the metal base structure.

[0003] In such an outer wall construction structure, in order to fasten the outer wall plate and the protruding corner column, each metal body edge is fixed to the existing wall.

[0004] In addition, ceramic and metal siding are widely used as decorative facing materials. Mainly there are many wooden houses, but in recent years they have also been adopted in general buildings. Also, as a renovation of a building, there is an example of constructing on an existing outer wall. In this case, the decorative facing material is attached to the base steel material (vertical body edge), but base steel materials are also required at openings, protruding corners, and recessed corners. However, in the existing technology, it cannot be said that the vibration isolation mechanism and fixing method of the base steel material considering the seismic resistance and deformation of the decorative facing material and the existing outer wall material are sufficient for the deformation generated in the base steel material or the existing outer wall material serving as the base during an earthquake.

[0005] When attaching decorative panels to ALC panels or extruded panels, it is common practice to attach them via furring strips rather than directly by adhesive. ALC panels and extruded panels are often installed vertically, and the standard installation method is the rocking method, which employs a construction method in which each panel rotates slightly around its bottom as a pivot point to follow deformation. When attaching ceramic or metal siding panels to these ALC panels or extruded panels, it is standard practice to attach them to the horizontal wall, but because ALC panels and extruded panels employ the rocking method, it was common practice to run the furring strips horizontally.

[0006] Patent Document 2 describes a structure in which a furring strip is fixed to the center of the panel with a bolt, and furring strips are run horizontally (horizontal furring strips), and sliding material is inserted so that the horizontal furring strips do not restrict the movement of the panel, so as not to restrict the movement of the locking mechanism.

[0007] Furthermore, in construction methods for renovations (for example, the Nichiha MARC system), attachments are fixed to the ALC panels with anchors, furring strips are fixed to the attachments vertically (vertical furring strips) with screws, and ceramic siding is fixed to the furring strips. In this case, the furring strips are fixed to the ALC panels with anchors, screws, and bolts. Therefore, the movement (locking) of the ALC panels may be easily restricted. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Publication No. 2005-248533 [Patent Document 2] Japanese Patent Publication No. 2020-200752 [Overview of the project] [Problems that the invention aims to solve]

[0009] In the exterior wall construction structure described above, it is desirable to install metal furring strips at the edges of existing walls, such as corners and openings, without causing any damage to the existing wall.

[0010] In exterior walls with exterior wall panels as described above, it is desirable that the rocking and other movements of the exterior wall panels, which form the wall base, are not hindered by vertical furring strips, horizontal furring strips, and decorative sheathing materials (exterior wall panels), and that they function reliably.

[0011] Furthermore, in a horizontal furring strip structure like that described in Patent Document 2, it is not possible to accommodate construction methods that, due to their shape characteristics, are almost always installed horizontally, such as with siding. To accommodate this, it is desirable to make it possible to install the furring strips vertically while making it less likely for the movement of the panels, such as rocking, to be restricted.

[0012] This invention has been made in view of the above reasons, and aims to provide a wall structure in which furring strips can be easily installed at any position, and in which the rocking of multiple panels is not easily obstructed by multiple decorative panels and furring strips. [Means for solving the problem]

[0013] A wall structure according to one aspect of the present invention is a wall structure in which panels with a substantially rectangular surface are arranged in the vertical and horizontal directions with their long sides adjacent to each other and their short sides adjacent to each other, and a decorative surface material with a substantially rectangular surface is attached to the surface side of the panels via furring strips, wherein at the attachment position of the decorative surface material, auxiliary furring strips are provided at locations where the furring strips are not located, and are connected to the furring strips via connecting members so as to move in conjunction with the furring strips when the panels are rocking. The decorative surface material is attached to the furring strips and the auxiliary furring strips. ru. Another aspect of the present invention relates to a wall structure in which panels with a substantially rectangular surface and a rocking mechanism are arranged vertically with their long sides adjacent to each other and their short sides adjacent to each other, and furring strips are attached to the surface of the panels via adapters in a direction perpendicular to the decorative surface material, and the substantially rectangular decorative surface material is attached horizontally along the long side direction to the furring strips on the surface side of the panels via fasteners, and is attached in a manner that does not easily interfere with the rocking of the panels, and auxiliary furring strips are attached to the furring strips via connecting members at openings, outer corners and inner corners, and the decorative surface material is attached to them, thereby having the same deformation-following performance as the furring strips, and the auxiliary furring strips are not fixed to the panels but are connected to the furring strips in a cantilevered state by the connecting members. [Effects of the Invention]

[0014] According to the present invention, it is possible to easily install the furring strips necessary for attaching the decorative surface material at any desired position, and the rocking of multiple panels is less likely to be hindered by multiple decorative surface materials and furring strips. [Brief explanation of the drawing]

[0015] [Figure 1] Figure 1A is a front view showing the normal state of the exterior wall structure according to this embodiment before rocking. Figure 1B is a front view showing the state after rocking, from the state shown in Figure 1A. [Figure 2] Figures 2A, 2B, 2C, and 2D are partial perspective views showing an example of the panel mounting structure of the exterior wall structure according to this embodiment. [Figure 3] Figure 3 is a perspective view showing another example of the panel mounting structure for the exterior wall structure according to this embodiment. [Figure 4] Figures 4A and 4B are cross-sectional views showing channel steel for the exterior wall structure according to this embodiment. Figure 4C is a front view showing L-angle for the exterior wall structure according to this embodiment. Figure 4D is a cross-sectional view of the same. Figure 4E is a bottom view of the same. [Figure 5]FIG. 5A is a front view showing an example of an adapter of an outer wall structure according to the present embodiment. FIG. 5B is a cross-sectional view of the same. FIG. 5C is a longitudinal sectional view of the same. FIG. 5D is a front view showing another example of an adapter of an outer wall structure according to the present embodiment. FIG. 5E is a cross-sectional view of the same. FIG. 5F is a longitudinal sectional view of the same. [Figure 6] FIG. 6A is a cross-sectional view showing an attachment structure of a decorative facing material of an outer wall structure according to the present embodiment. FIG. 6B is a cross-sectional view showing another example of an attachment structure of a decorative facing material of an outer wall structure according to the present embodiment. [Figure 7] FIG. 7 is a sectional view showing an attachment structure between an adapter and a body edge of an outer wall structure according to the present embodiment. [Figure 8] FIG. 8A is a front view in a normal state showing an attachment structure between an adapter and a body edge of an outer wall structure according to the present embodiment. FIG. 8B is a schematic front view showing the movement of a vertical body edge and an adapter with respect to a panel during the locking operation of the panel of the outer wall structure according to the present embodiment. FIG. 8C is a schematic side view showing the movement of the vertical body edge with respect to the adapter during the locking operation of the panel of the outer wall structure according to the present embodiment. [Figure 9] FIG. 9 is a longitudinal sectional view showing an attachment structure of a decorative facing material of an outer wall structure according to the present embodiment. [Figure 10] FIGS. 10A and 10B are front views schematically showing the movement of fasteners and a decorative facing material during the locking operation of a panel of an outer wall structure according to the present embodiment. [Figure 11] FIG. 11A is a longitudinal sectional view showing an attachment structure of decorative facing materials arranged adjacent to each other in the vertical direction of an outer wall structure according to the present embodiment. FIG. 11B is a longitudinal sectional view showing another example of an attachment structure of decorative facing materials arranged adjacent to each other in the vertical direction of an outer wall structure according to the present embodiment. [Figure 12] FIG. 12A is a cross-sectional view showing an attachment structure of decorative facing materials arranged adjacent to each other in the horizontal direction of an outer wall structure according to the present embodiment. FIG. 12B is a cross-sectional view showing another example of an attachment structure of decorative facing materials arranged adjacent to each other in the horizontal direction of an outer wall structure according to the present embodiment. [Figure 13] FIG. 13 is a cross-sectional view showing an outer corner portion of an outer wall structure according to the present embodiment. [Figure 14] FIG. 14 is a front view showing the body edge and the auxiliary body edge at the outside corner of FIG. 13. [Figure 15] FIG. 15 is a cross-sectional view showing another example of the outside corner of the outer wall structure according to the present embodiment. [Figure 16] FIG. 16 is a cross-sectional view showing the inside corner of the outer wall structure according to the present embodiment. [Figure 17] FIG. 17A is a front view showing the opening of the outer wall structure according to the present embodiment. FIG. 17B is a longitudinal sectional view thereof. FIG. 17C is a cross-sectional view thereof. [Figure 18] FIG. 18A is a front view showing another example of the normal state before locking of the outer wall structure according to the present embodiment. FIG. 18B is a front view showing another example of the state after locking from the state shown in FIG. 18A. [Figure 19] FIG. 19A is a longitudinal sectional view showing the outer wall structure according to the present embodiment. FIG. 19B is a longitudinal sectional view showing the outer wall structure according to the present embodiment. FIG. 19C is an exploded perspective view showing an example of the longitudinal body edge thereof. [Figure 20] FIG. 20A is a plan view showing the T-joint of the outer wall structure according to the present embodiment. FIG. 20B is a front view thereof. FIG. 20C is a side view thereof. FIG. 20D is a front view showing the attachment structure of the auxiliary body edge using the T-joint of the outer wall structure according to the present embodiment. [Figure 21] FIG. 21A is a cross-sectional view showing the attachment structure of the body edge of the channel steel and the adapter used in the outer wall structure according to the present embodiment. FIG. 21B is a cross-sectional view showing the attachment structure of the body edge of the square steel pipe and the adapter used in the outer wall structure according to the embodiment. FIG. 21C is a perspective view of the square steel pipe thereof. [Figure 22] FIG. 22A is a front view showing the opening of the normal state before locking of the outer wall structure according to the present embodiment. FIG. 22B is a front view showing the opening in the locked state from the state shown in FIG. 22A. [Figure 23] FIG. 23 is a cross-sectional view showing a modified example of the general part of the outer wall structure according to the present embodiment. [Figure 24]Figure 24 is a cross-sectional view showing a modified example of an opening in the exterior wall structure according to this embodiment. [Figure 25] Figure 25 is a cross-sectional view showing a modified example of the corner portion of the exterior wall structure according to this embodiment. [Figure 26] Figure 26 is a cross-sectional view showing a modified example of an inner corner of the exterior wall structure according to this embodiment. [Figure 27] Figure 27 is a cross-sectional view showing a modified example of an inner corner of the exterior wall structure according to this embodiment. [Figure 28] Figure 28 is a cross-sectional view showing the partitioned section of the exterior wall structure according to this embodiment. [Figure 29] Figure 29A is a perspective view showing an example of fasteners for an exterior wall structure according to this embodiment. Figure 29B is a side view of the same. [Figure 30] Figure 30 is a cross-sectional view showing a modified example of an opening in the exterior wall structure according to this embodiment. [Modes for carrying out the invention]

[0016] (Embodiment 1) The wall structure of the present invention is applicable to various wall structures such as exterior walls, interior walls, and partition walls, but Figures 1A and 1B show an exterior wall structure 1 as an embodiment of this invention. The exterior wall structure 1 comprises a plurality of panels 2. The panels 2 are formed with a substantially rectangular surface. In this embodiment, the panels 2 are formed with a vertically elongated rectangle on the surface when viewed from the front. Although the surface is described as substantially rectangular, this does not exclude the possibility of a square shape.

[0017] In this embodiment, the direction of arrow X in the figure is forward, and the direction opposite to arrow X is backward. The front of the exterior wall structure 1 is the outside of the building, and the rear of the exterior wall structure 1 is the inside of the building. Also, the direction of arrow Y in the figure is to the right, and the direction opposite to arrow Y is to the left. The left-right direction is sometimes called the horizontal direction. Also, the direction of arrow Z in the figure is upward, and the direction opposite to arrow Z is downward. The up-down direction is sometimes called the vertical direction.

[0018] Panel 2 consists of ALC panels. ALC panels are board materials formed from Autoclaved Lightweight Aerated Concrete (lightweight aerated concrete cured with high temperature and pressure steam). In this embodiment, panel 2 does not have to be an ALC panel; it may be a plate material made of other materials such as extruded cement board or metal panel.

[0019] Multiple panels 2 are arranged in a line in the vertical, horizontal, and vertical directions, and these multiple panels 2 form the base for attaching the finishing material. Multiple panels 2 arranged adjacent to each other in the vertical direction have their short sides 22 adjacent to each other. Multiple panels 2 arranged adjacent to each other in the horizontal direction have their long sides 21 adjacent to each other. Therefore, the multiple panels 2 are installed vertically.

[0020] The exterior wall structure 1 of this embodiment includes a plurality of decorative surface materials 3. The decorative surface material 3 is formed in a substantially rectangular shape on its surface. In this embodiment, the decorative surface material 3 is formed in a rectangular shape that extends horizontally (horizontally elongated) when viewed from the front (when viewed from the front).

[0021] The decorative surface material 3 consists of ceramic siding. Ceramic siding is an exterior wall material in which the surface of the base material is decorated by forming irregularities or painting. The main raw materials of the base material are cement, silicate raw materials, fibrous raw materials, admixtures, etc. The decorative surface material 3 does not have to be ceramic siding as long as it is a finishing material for walls; it may also be a board material made of other materials such as metal siding.

[0022] Multiple decorative panels 3 are arranged in a line in the vertical, horizontal, and vertical directions, and these multiple decorative panels 3 form the surface of the exterior wall. Multiple decorative panels 3 arranged adjacent to each other in the vertical direction have their long sides 31 adjacent to each other. Multiple decorative panels 3 arranged adjacent to each other in the horizontal direction have their short sides 32 adjacent to each other. Therefore, the multiple decorative panels 3 are installed horizontally.

[0023] The exterior wall structure 1 of this embodiment is equipped with furring strips 4. The furring strips 4 are provided for installing multiple decorative facing materials 3 on the surface side (front) of multiple panels 2. Therefore, the multiple decorative facing materials 3 are attached to the multiple panels 2 via the furring strips 4. In this embodiment, the furring strips 4 are equipped with multiple vertical furring strips 41. The vertical furring strips 41 have a shape that extends in the vertical direction. Channel steel 44 can be used for the vertical furring strips 41. Figures 4A and 4B show channel steel 44. The channel steel 44 has a base piece 46 and a pair of side pieces 42. The side pieces 42 protrude from both ends of the base piece 46, and the side pieces 42 face each other. The channel steel 44 is also provided with an opening 45 at a position facing the base piece 46. Note that the channel steel 44 shown in Figure 4A and the channel steel 44 shown in Figure 4B have different width dimensions and can be used appropriately depending on the location and purpose of use.

[0024] The exterior wall structure 1 of this embodiment is equipped with a plurality of adapters 6. The furring strips 4 (vertical furring strips 41) are attached to the panel 2 by the adapters 6. Figures 5A-C and 5D-F show the adapters 6. The adapter 6 is a metal piece made of metal, such as a steel plate, and is U-shaped, comprising a bottom surface that functions as a fixing piece 61 and a pair of guide pieces 62 that consist of sides. The fixing piece 61 is formed in a substantially rectangular shape (for example, a rectangle) when viewed from the front. A fixing hole 63 is provided that penetrates through the fixing piece 61 in the front-to-back direction (thickness direction of the fixing piece 61) on the approximate center line. The pair of guide pieces 62 extend outwards (forward) from both sides (sides) of the fixing piece 61 that are opposite each other. Each guide piece 62 is formed in a substantially rectangular shape. Each guide piece 62 has a connecting hole 64 drilled in it. The connecting holes 64 formed in each guide piece 62 are provided opposite each other. Each connecting hole 64 penetrates the guide piece 62 in the left-right direction (thickness direction). Each connecting hole 64 is also formed as an elongated hole extending in the vertical direction. The fixing holes 63 and the connecting holes 64 are offset from each other in the vertical direction so that their positions do not overlap. A sheet-like waterproofing material 66, for example, made of waterproof tape 66, is provided on the rear surface (outside of the bottom surface) of the fixing piece 61. Note that the adapter 6 shown in Figures 5A to C and the adapter 6 shown in Figures 5D to F have different width dimensions (distance between the pair of guide pieces 62), and can be used appropriately depending on the location and purpose of use. For example, the narrow adapter 6 shown in Figures 5A to C is used for the narrow channel steel 44 shown in Figure 4A, and the wide adapter 6 shown in Figures 5D to F is used for the wide channel steel 44 shown in Figure 4B. Furthermore, the dimensions and shapes of the furring strips and adapters are not limited to those shown. For example, the furring strips 4 (vertical furring strips 41) may be square steel pipes other than channel steel 44, H-shaped steel, etc. Also, the channel steel 44 in this invention includes shapes with lips (so-called C-shaped steel). In the case of long lengths, one adapter 6 is sufficient for one furring strip 4, but using two or more adapters of a smaller size allows for weight reduction and offers advantages such as easier installation.

[0025] In this embodiment, multiple panels 2 are attached to the structural frame 5 in a rocking manner. The structural frame 5 is the frame of a building such as a steel frame, reinforced concrete, or steel-reinforced concrete structure, and includes columns and beams. Rocking means that when the structural frame 5 undergoes inter-story deformation, each panel 2 rotates slightly to follow the deformation in the in-plane direction.

[0026] When constructing multiple panels 2 in a locking manner, known construction methods can be used, for example, the vertical wall locking construction method can be used.

[0027] Figures 2A-D show an overview of the vertical wall locking construction method. Multiple panels 2 are attached to the structural frame 5 via a guide angle 51, zigzag plates 52, flat plates 53, and support plates 54. The flat plates 53 attached to the panels 2 rotate slightly relative to the support plates 54 fixed to the guide angle 51, allowing the panels 2 to lock. Figure 3 shows another vertical wall locking construction method. Multiple panels 2 are attached to the locking portion 59 of the structural frame 5 via set bolts 58, speed bolts 56, angle clips 57, and single plates 55.

[0028] In this embodiment, fittings for vertical wall locking construction methods other than those described above can also be used.

[0029] Multiple vertical furring strips 41 are attached to the surface side of the multiple panels 2 as described above. One vertical furring strip 41 is attached to each panel 2. Therefore, multiple vertical furring strips 41 are separated from each other. In this way, the length of the vertical furring strips 41 is less than or equal to the length of the long side 21 of the panel 2, and the vertical furring strips 41 are attached to each panel 2 so as not to straddle the short sides 22 of multiple vertically adjacent panels 2. Furthermore, vertically adjacent vertical furring strips 41 are positioned approximately in a straight line in the vertical direction when the panels 2 are not locked together in a normal state.

[0030] Each vertical furring strip 41 is attached to the surface of the panel 2 via adapters 6 at its top, bottom, and, where necessary, between them. The adapter 6 is fixed to the surface of the panel 2 by contacting a fixing piece 61 with a sheet-like waterproofing material 66. In this case, as shown in Figure 6A, fasteners (adapter fixing bolts) 65 such as bolts, anchor bolts, speed bolts, screws, or nails are inserted through fixing holes 63 in the fixing piece 61 to the surface of the panel 2, thereby fixing the fixing piece 61 to the surface of the panel 2. The adapter 6 is located approximately in the center of the panel 2 in the left-right direction. By positioning the vertical furring strips 41 approximately in the center of the panel 2 in the left-right direction, the vertical movement of the vertical furring strips 41 when the panel 2 performs a rocking motion can be minimized. When bolts are used as fasteners 65, it is preferable to provide embedded nuts in predetermined positions when manufacturing the panel 2.

[0031] As shown in Figure 7, the vertical furring strip 41 is inserted between a pair of guide pieces 62 of the adapter 6 and fixed to the adapter 6 by a connector (furring strip fixing bolt) 7. Mounting holes 43 are drilled in each of the pair of side pieces 42 of the vertical furring strip 41. The mounting holes 43 on each side piece 42 are opposite to each other. The mounting holes 43 may be processed and formed at the construction site or may be formed in advance at a factory or the like. The connector 7 is made up of, for example, a bolt and nut. The vertical furring strip 41 is attached to the adapter 6 by inserting the bolt of the connector 7 through the connecting hole 64 and the mounting hole 43 and tightening the nut. Here, since the fixing hole 63 and the connecting hole 64 of the adapter 6 are offset vertically from the center position, it is easy to position the connector 7 so as not to interfere with the fixing device 65. The vertical orientation of the adapter 6 is not particularly limited, but it is preferable to position the fixing hole 63 above the center in the vertical direction so that the adapter 6 is less likely to invert vertically due to its own weight when fixed. In this manner, the vertical furring strips 41 have elongated connecting holes 64, making it easier to insert the connectors 7. Furthermore, when the panel 2 rocks and a strong force is applied, the connectors 7 can move within the connecting holes 64. Consequently, the vertical furring strips 41 can move to shift position relative to the adapter 6 during the rocking motion of the panel 2, preventing the rocking motion of the panel 2 from being obstructed by the decorative panel material 3 or the vertical furring strips 41. Note that the connecting holes 64 may be formed with a diameter larger than the outer diameter of the bolt body of the connector 7, rather than being elongated. The vertical furring strips 41 are also installed so that the opening 45 side of the channel steel 44 faces the panel 2 side (rear side). This allows the head of the fastener 65 to be housed within the opening 45, making it less likely to be an obstacle to the installation of the vertical furring strips 41 even when the vertical furring strips 41 are firmly inserted all the way between the pair of guide pieces 62 of the adapter 6.

[0032] Figures 8A-8C show a schematic representation of the movement of the vertical furring strips 41 and adapter 6 during the locking operation of panel 2. The adapter 6, which is fixed to panel 2 by adapter fixing bolts 65, rotates clockwise and counterclockwise around the adapter fixing bolts 65 when panel 2 is locked. The vertical furring strips 41, which are fixed to adapter 6 by furring strip fixing bolts 7, slide up and down within the elongated holes of the connecting holes 64 relative to the adapter 6 when panel 2 is locked. This makes it less likely for the vertical furring strips 41 to interfere with the locking operation of panel 2.

[0033] Figures 9, 10A, and 10B show a schematic representation of the movement of the fasteners (fasteners) 9 and decorative panels 3 during the rocking motion of panel 2. Multiple decorative panels 3 are attached to the front of the vertical furring strips 41. Fasteners (fasteners) 9 are used to attach the decorative panels 3. The fasteners 9 are attached to the surface (front) of the vertical furring strips 41. The fasteners 9 have locking parts (claws) 92 that catch on the solid parts 33 of the decorative panels 3, and are attached to the vertical furring strips 41 with the fasteners 9 locked to the solid parts 33. When attaching the fasteners 9 to the vertical furring strips 41, it is preferable to allow the fasteners 9 to rotate relative to the vertical furring strips 41 when panel 2 rocks and a strong force is applied. This makes it easier for the fasteners 9 to rotate relative to the vertical furring strips 41 during the rocking motion of panel 2, and the rocking motion of panel 2 is less likely to be obstructed by the decorative panels 3 and vertical furring strips 41. In this case, it is preferable that the fastener 9 is rotatably attached to the vertical furring strip 41 with a single fastener 93 such as a screw, nail, or bolt.

[0034] Multiple decorative panels 3 are attached to the front of the vertical furring strips 41 via multiple fasteners 9. Preferably, the solid portion 33 of the decorative panel 3 is slidably locked to the locking portion of the fastener 9. This allows the decorative panel 3 to slide relative to the fastener 9 during the rocking motion of the panel 2, preventing the rocking motion of the panel 2 from being obstructed by the decorative panel 3 or the vertical furring strips 41. As shown in Figures 11A and 11B, the solid portion 33 of the decorative panel 3 is formed along the long sides 21 at the upper and lower ends of the decorative panel 3, extending along its entire length. The fasteners 9 may be short, as shown in Figure 6A, or long, as shown in Figure 6B. Longer fasteners 95 are preferable for use on high floors where wind pressure resistance is required, and are preferably rotatably attached to each vertical furring strip 41 with a single screw, nail, or bolt.

[0035] Figures 12A and 12B show the structure of the general part of the exterior wall. As shown in Figure 12A, the short sides 32 of multiple decorative panels 3 are adjacent to each other on the front surface of a vertical furring strip 41 attached via an adapter 6 to approximately the center of the panel 2 in the left-right direction (short side direction). The ends of the short sides 32 of adjacent decorative panels 3 are secured to separate fasteners 9 attached to the front surface of the same vertical furring strip 41 in the left-right direction. An elastic body 36 is provided between the short sides 32. Examples of elastic bodies 36 include sealant, which ensures waterproofing between the decorative panels 3. The elastic body 36 has elasticity such that it does not expand or contract and break even when the decorative panels 3 move due to rocking motion. The elastic body 36 is supported by backup material 35 such as a hat-shaped joiner or a single-sided hat-shaped joiner and is placed in the joint between the short sides 32 of the decorative panels 3. An elastic body 8 is provided between adjacent panels 2. The elastic body 8 ensures waterproofing between the panels 2.

[0036] Figure 12B shows construction using auxiliary furring strips 11. The auxiliary furring strips 11 are installed in locations where vertical furring strips 4 are not present. In other words, the auxiliary furring strips 11 are installed in locations where there is a lateral misalignment between the short side 32 of the decorative panel 3 and the vertical furring strip 41 closest to this short side 32. In this case, the vertical furring strips 41 are installed approximately in the center of the panel 2 in the lateral direction, but due to the arrangement of the decorative panel 3, the end of the decorative panel 3 on the short side 32 may not be located in front of the vertical furring strips 41, and the auxiliary furring strips 11 are used to support the end of the decorative panel 3.

[0037] The auxiliary furring strip 11 is made of channel steel 44, the same material used for the vertical furring strips 41. The auxiliary furring strip 11 is connected to the vertical furring strip 41 closest to it via a connecting member 12. The connecting member 12 comprises a connecting member body 121 and a pair of L-angles 122. The connecting member body 121 is made of channel steel 44, the same material used for the vertical furring strips 41. The L-angles 122 are short pieces formed in an L-shape in cross-section, as shown in Figures 4C to 4E. One end of the connecting member body 121 is connected to the vertical furring strip 41 closest to the auxiliary furring strip 11 by one of the pair of L-angles 122. The other end of the connecting member body 121 is connected to the auxiliary furring strip 11 by the other of the pair of L-angles 122. In this way, the auxiliary furring strip 11 is connected to the nearest vertical furring strip 41 in a cantilever-like manner. A fastener 9 is attached to the surface of the auxiliary furring strip 11 in the same manner as described above, and the end of the decorative surface material 3 on the short side 32 is attached to this fastener 9.

[0038] Figures 13 and 14 show the structure of the corner section 10. At the corner section 10, the corner member 101 is attached using the same auxiliary furring strips 11 as described above. At the corner section 10, a pair of adjacent panels 2 are arranged at approximately a right angle via an elastic body 8, with one being the winning side and the other the losing side. Each of the adjacent pair of panels 2 has a vertical furring strip 41 attached to it, and each vertical furring strip 41 is provided with a connecting member 12 that protrudes toward the tip of the corner section 10. Each connecting member 12 is connected to an auxiliary furring strip 11. The auxiliary furring strip 11 connected to the vertical furring strip 41 of the winning side panel 2 protrudes outward from the end 23 of the winning side panel 2. The auxiliary furring strip 11 connected to the vertical furring strip 41 of the losing side panel 2 is located near (forward of) the end 23 of the winning side panel 2. The tongue and groove portion 33 of the end portion 34 of the decorative panel 3 is locked to a fastener 9 fixed to the base piece 111 of the auxiliary furring strip 11 of the winning side panel 2. The two ends 102 of the roughly L-shaped corner piece 101 are locked to corner piece fasteners 91 fixed to the base piece 111 and one (outer) side piece 112 of the auxiliary furring strip 11. A hat-shaped joiner 35 is fixed to the auxiliary furring strip 11 connected to the vertical furring strip 41 of the winning side panel 2, and is located between the decorative panel 3 and the corner piece 101 attached to the winning side panel 2, functioning as a backup material for the sealing material (elastic body) 36. On the other hand, the end portion 34 of the decorative panel 3 attached to the losing side panel 2, located in front of the end portion 23 of the winning side panel 2, is locked to a fastener 9 fixed to the base piece 111 of the auxiliary furring strip 11 of the losing side panel 2. Furthermore, a hat-shaped joiner 37 on one side is fixed to an auxiliary furring strip 11 connected to the vertical furring strip 41 of the losing panel 2, and is located between the corner trim 101 and the decorative surface material 3 attached to the losing panel 2, functioning as a backup material for the sealing material (elastic body) 38. In this embodiment, as shown in Figure 14, one vertical furring strip 41 is attached to one panel 2 using five adapters 6. The auxiliary furring strip 11 has approximately the same length as the vertical furring strip 41 and is connected to the vertical furring strip 41 using five connecting members 12. Each connecting member 12 is installed so as to be located near the top of each adapter 6. This reduces the load on the vertical furring strip 41.

[0039] Figure 15 shows the structure of another corner section 10. In this corner section 10 as well, a pair of adjacent panels 2 are arranged at approximately a right angle via an elastic body 8, with one being the winning side and the other the losing side. However, the auxiliary furring strip 11 connected to the vertical furring strip 41 of the winning panel 2 does not protrude outward from the end 23 of the winning panel 2. Also, the auxiliary furring strip 11 connected to the vertical furring strip 41 of the losing panel 2 is located near (forward of) the end 23 of the winning panel 2. Therefore, each auxiliary furring strip 11 is positioned approximately symmetrically with respect to the apex of the corner section 10. The corner member 101, which has a roughly L-shaped cross section, has one end secured to a corner member fastener 91 fixed to the base piece 111 of the auxiliary furring strip 11 connected to the vertical furring strip 41 of the winning panel 2, and the other end secured to a corner member fastener 91 fixed to the base piece 111 of the auxiliary furring strip 11 connected to the vertical furring strip of the losing panel. The joint portion 33 at the end 34 of the decorative panel 3 attached to the winning side panel 2 is engaged with a fastener 9 fixed to the base piece 111 of the auxiliary furring strip 11 of the winning side panel 2. The joint portion 33 at the end 34 of the decorative panel 3 attached to the losing side panel 2 is engaged with a fastener 9 fixed to the base piece 111 of the auxiliary furring strip 11 of the losing side panel 2. In addition, a hat-shaped joiner 35 is fixed to the respective auxiliary furring strips 41 of the winning and losing side panels 2 and is positioned between the adjacent decorative panel 3 and corner piece 101, functioning as a backup material for the sealing materials 36 and 38.

[0040] Figure 16 shows the structure of the inner corner 70. In the inner corner 70, a pair of adjacent panels 2 are arranged at approximately a right angle via an elastic body 8, with one being the winning side and the other the losing side. In addition, the pair of adjacent panels 2 in the inner corner 70 have shorter short sides than the panels 2 in the general area. For this reason, auxiliary furring strips 11 are not used, and the decorative panel 3 is installed using adapters 6, vertical furring strips 41 and fasteners 9, in the same manner as in the general area. The decorative panel 3 on the winning side has its end positioned near the losing side panel 2 and is secured to fasteners 9 fixed to the vertical furring strips 41 of the winning side panel 2, and the decorative panel 3 on the losing side has its end positioned near the winning side decorative panel 3 and is secured to fasteners 9 fixed to the vertical furring strips 41 of the losing side panel 2. A hat-shaped joiner on one side is also fixed to the vertical furring strips 41 of the losing side panel 2 and is positioned between the end of the losing side decorative panel 3 and the surface of the winning side decorative panel 3, functioning as a backup material for the sealing material 38.

[0041] In addition, the inner corner 70 may also use auxiliary furring strips 11, similar to the outer corner 10. That is, in the inner corner 70, a pair of adjacent panels 2 are arranged at approximately a right angle via an elastic body 8, with one being the winning side and the other the losing side. The auxiliary furring strip 11 connected to the vertical furring strip 41 of the winning side panel 2 is located near the losing side panel 2. The auxiliary furring strip 11 connected to the vertical furring strip 41 of the losing side panel 2 is located a predetermined distance from the winning side panel 2 so as not to interfere with the decorative facing material 3 of the winning side. The decorative facing material 3 of the winning side has its end positioned near the losing side panel 2 and is secured to a fastener 9 fixed to the auxiliary furring strip 11 of the winning side panel 2, and the decorative facing material 3 of the losing side has its end positioned near the decorative facing material 3 of the winning side and is secured to a fastener 9 fixed to the auxiliary furring strip 11 of the losing side panel 2. Furthermore, the hat-shaped joiner 37 on one side is fixed to the auxiliary furring strip 11 of the losing side panel 2 and is positioned between the end of the decorative surface material 3 on the losing side and the surface of the decorative surface material 3 on the winning side, functioning as a backup material for the sealing material 38.

[0042] Figures 17A-C show the structure of the opening 50 in the exterior wall. In the opening 50, the construction is carried out using auxiliary furring strips 11, as described above. The auxiliary furring strips 11 are formed to be longer than the vertical dimension of the opening 50 and are positioned on both sides of the opening 50 so as to protrude above and below the opening 50. Each auxiliary furring strip 11 is connected to the nearest vertical furring strip 41 via a connecting member 12. In addition, auxiliary furring strips 11 may be used in locations other than those shown in this embodiment as needed.

[0043] In the exterior wall structure 1 of this embodiment, the panel 2 performs a rocking motion between the normal state (pre-rocking state) shown in Figure 1A and the rocked state shown in Figure 1B. During this motion, the vertical furring strips 41 and decorative panel 3 are more easily able to follow the rocking motion of the panel 2. Therefore, the rocking motion of the panel 2 is less likely to be hindered.

[0044] (Embodiment 2) The exterior wall structure 1 according to this embodiment differs from the vertical furring strip 41 according to Embodiment 1 in the configuration of the vertical furring strip 41.

[0045] In the following, components similar to those in Embodiment 1 will be denoted by common reference numerals, and their descriptions will be omitted as appropriate.

[0046] The configuration described in Embodiment 2 can be applied in appropriate combination with the configuration described in Embodiment 1.

[0047] Embodiment 1 showed a case where the vertical dimension of the vertical furring strip 41 is shorter than the vertical dimension of the panel 2 (the dimension of the long side 21). On the other hand, in Embodiment 2, of the vertically adjacent vertical furring strips 41, either the upper or lower vertical furring strip 41 is formed to be longer than the vertical dimension of the panel 2. In Figures 18A and 18B, the lower vertical furring strip 41 is formed to be longer than the vertical dimension of the panel 2. Therefore, the upper part of the lower vertical furring strip 41 is positioned to straddle the short side 22 of the vertically adjacent panel 2. In this case, the lower vertical furring strip 41 is not fixed to the upper panel 2, but only to the lower panel 2. As a result, even if the vertical furring strip 41 is positioned to straddle the short side 22 of the vertically adjacent panel 2, the rocking operation of the panel 2 is less likely to be hindered.

[0048] As shown in Figure 19A, the lower vertical furring strip 41 may be formed continuously along its entire length, but as shown in Figure 19B, it may also be formed with a vertical furring strip body 411 that is less than or equal to the length of the long side 21 of the panel 2, and an extension furring strip 412 connected to the vertical furring strip body 411. In this case, as shown in Figure 19C, an insertion piece 413 provided at the lower end of the extension furring strip 412 can be inserted into the upper part of the vertical furring strip body 411 and fixed with a fastener 414 such as a screw or bolt. This allows the vertical furring strip 41 to be formed to exceed the length of the long side 21 of the panel 2.

[0049] In Embodiment 1, as shown in Figure 1A, the decorative panel 3 is positioned to straddle the short sides 22 of vertically adjacent panels 2. However, due to the arrangement of the decorative panel 3, as shown in Figures 18A and 18B, the positions of the joints between the short sides 22 of vertically adjacent panels 2 and the joints between the long sides 31 of vertically adjacent decorative panel 3 may coincide approximately in a front view. In this case, as shown in Figure 1A, if the length of the vertical furring strip 41 is less than or equal to the vertical length of the panel 2, the fastener 9 cannot be attached to the vertical furring strip 41, and the long side 31 of the decorative panel 3 cannot be secured to the fastener 9. Therefore, in Embodiment 2, the upper part of the vertical furring strip 41 is positioned to straddle the short sides 22 of vertically adjacent panels 2. In this case, the fastener 9 can be attached to the upper part of the vertical furring strip 41 that crosses the short side 22 of panel 2. Even if the joint between the short sides 22 of vertically adjacent panels 2 and the joint between the long sides 31 of vertically adjacent decorative panel 3 are roughly aligned in a front view, the long side 31 of the decorative panel 3 can be secured with the fastener 9, ensuring that the installation of the decorative panel 3 is not impaired. Although the case described above is where the vertical furring strip 41 that straddles the short side 22 of adjacent panels 2 is formed to be longer than the vertical dimension of panel 2, it is not limited to this case. Even if it is less than or equal to the vertical length of panel 2, it may be shifted upward or downward to straddle the short side 22 of adjacent panels 2.

[0050] (modified version) Figures 20A to D show modified examples of the connecting member 12. This connecting member 12 comprises a connecting member body 121 and a pair of T-shaped joints 13. As shown in Figure 20D, it is preferable to attach the T-shaped joint 13 by placing it over the purlin 4 and the connecting member body 121 from the surface side and securing it with bolts and nuts. As shown in Figures 20A to C, the T-shaped joint 13 comprises a T-shaped plate 131 and clamping pieces 132 extending inward from the T-shaped plate 131 along its periphery, excluding the three end edges. The arm portion 133 is placed over the purlin 4 or auxiliary purlin 11 from the surface side, and the leg portion 134 is placed over the connecting member body 12. Bolts are inserted through the mounting holes of the purlin 4, auxiliary purlin 11, and connecting member body 12, and through the through holes 135 of the clamping pieces 132 of the T-shaped joint 13, and it can be secured with nuts. In other words, the T-shaped joint 13 has its arms 133 and legs 134 attached to both the upper and lower parts of the connecting member body 121 by fasteners such as bolts and nuts. Figures 20B and 20C are schematic diagrams from the back side to show the shape of the connecting member 12 and the state of attachment between the connecting member 12 and the furring strips 4 and auxiliary furring strips 11.

[0051] Figures 21B and 21C show modified examples of the furring strip 4. The furring strip 4 used in these modified examples is made of a square steel pipe and has relief holes 48 to prevent interference with the fasteners 65 of the adapter 6. The relief holes 48 are provided on one of the four sides of the furring strip 4. The relief holes 48 are large enough to accommodate the heads 651 of the fasteners 65, such as bolts. It is also preferable to pre-drill the relief holes 48 at the positions where the heads 651 of the fasteners 65 will be accommodated.

[0052] As shown in Figure 21A, in the above embodiment 1, a channel steel furring strip 4 is used, so the head 651 of the fastener 65 is inserted into the opening 45 of the furring strip 4, preventing interference by preventing contact between the head 651 of the fastener 65 and the furring strip 4. On the other hand, in this modified example, the furring strip 4 is attached to the adapter 6 so that the side having the relief hole 48 faces the panel 2 side. As a result, the head 651 is accommodated in the relief hole 48, preventing interference by preventing contact between the head 651 and the furring strip 4.

[0053] Figures 22A and 22B show the normal and rocking states of the opening 50. During rocking, the vertical furring strips 41 and auxiliary furring strips 11 move in conjunction, and each decorative panel 3, which is attached to the vertical furring strips 41 and auxiliary furring strips 11 by fasteners 9, slides laterally. This makes it less likely for the rocking motion of the panel 2 to be obstructed.

[0054] Figures 23-28 show modified examples of the mounting state of the fasteners 9. In these modified examples, long fasteners 95 and short fasteners 96 are used in combination to improve the mounting strength of the auxiliary furring strips 11 regardless of the floor height. For example, the long fasteners 95 can be those shown in Figures 29A and B. The short fasteners 96 can be the same as those shown in Figures 1A and 1B, 6, 9-13, 15, 16, 22A and 22B. Each part will be explained below.

[0055] Figure 23 shows the general structure of the exterior wall, similar to that in Figure 12B. The furring strips 4 are vertical furring strips 41, and are attached to the surface of the panel 2 via adapters 6, as described above. Of the two vertical furring strips 41, the one closer to the auxiliary furring strip 11, 41a, is connected to the auxiliary furring strip 11 via connecting material 12, as described above. The fasteners 95 for long items are attached across at least the auxiliary furring strip 11 and the two vertical furring strips 41. The two vertical furring strips 41 are the one closer to the auxiliary furring strip 11, 41a, and the one further away from the auxiliary furring strip 11 than 41a, 41b. In other words, the fasteners 95 for long items are attached across the auxiliary furring strip 11, the vertical furring strip 41a connected to the auxiliary furring strip 11 via connecting material 12, and the vertical furring strip 41b adjacent to that vertical furring strip 41 on the opposite side from the auxiliary furring strip 11. The fasteners 95 for long objects are rotatably attached to the auxiliary furring strips 11 and the vertical furring strips 41 with a single screw, nail, or bolt.

[0056] The fasteners 95 for long items are attached to the front surfaces of the two vertical furring strips 41a and 41b and the front surface of the auxiliary furring strip 11 by fasteners 93, similar to those described above. The fasteners 95 for long items are made of metal fittings, similar to the fasteners 96 for short items, and have a locking part (claw) 92 on the front of the fixing plate portion 951 that catches on the solid part 33 of the decorative surface material 3 (see Figures 29A and B). Multiple fixing holes 952 are formed in the fixing plate portion 951, and the fasteners 93 can be inserted into the fixing holes 952 to fix them to the vertical furring strips 41a and 41b and the auxiliary furring strip 11. Then, similar to those described above, multiple decorative surface materials 3 are attached to the front of the panel 2, vertical furring strips 41, auxiliary furring strip 11, connecting member 12 and fasteners 95 for long items by locking the solid part 33 of the decorative surface material 3 into the locking part 92.

[0057] In this modified example, the auxiliary furring strip 11 and the vertical furring strip 41 are connected via a long fastener 95. The long fastener 95 is made of metal and has a predetermined rigidity. Therefore, the auxiliary furring strip 11 and the vertical furring strip 41 are connected not only via the connecting member 12, but also by the long fastener 95. Consequently, the auxiliary furring strip 11, which is cantilevered to the vertical furring strip 41 by the connecting member 12, is further connected to the vertical furring strip 41 by the long fastener 95, thereby improving the mounting strength of the auxiliary furring strip 11. Moreover, the long fastener 95 is fixed not only to the vertical furring strip 41a adjacent to the auxiliary furring strip 11, but also to the vertical furring strip 41b adjacent to the vertical furring strip 41a on the opposite side of the auxiliary furring strip 11. Therefore, the auxiliary furring strip 11 is connected to at least two vertical furring strips 41 via the long fastener 95, further improving the mounting strength of the auxiliary furring strip 11.

[0058] Furthermore, during rocking, the vertical furring strips 41 and auxiliary furring strips 11 move in conjunction, and each decorative panel 3, which is attached to the vertical furring strips 41 and auxiliary furring strips 11 by long fasteners 95, slides laterally, making it less likely to interfere with the rocking motion of the panel 2.

[0059] Figure 24 shows the structure of an opening 50 in an exterior wall, similar to that in Figures 17A-C. Frame materials 60, such as window frames or door frames, are attached to the periphery of the opening 50. Similar to Figures 17A-C, the auxiliary furring strips 11 are formed to be longer than the vertical dimension of the opening 50 and are positioned on both sides of the opening 50 so as to protrude above and below the opening 50. Each auxiliary furring strip 11 is connected to the nearest vertical furring strip 41 via a connecting member 12. In this modified example, as well as the short fasteners 96, the same long fasteners 95 as above are used as fasteners 9. The long fasteners 95 are attached across at least the auxiliary furring strips 11 and the two vertical furring strips 41. That is, the long fasteners 95 are attached across the vertical furring strip 41a connected to the auxiliary furring strip 11 via the connecting member 12, and across one vertical furring strip 41b adjacent to that vertical furring strip 41 on the opposite side from the auxiliary furring strip 11.

[0060] Figure 25 shows the same configuration at the exterior wall corner 10 as in Figure 15. Similar to Figure 15, the corner member 101 is supported by a short corner member fastener 91 provided on the auxiliary furring strip 11, but the long fastener 95 is attached across the auxiliary furring strip 11, a vertical furring strip 41a connected to the auxiliary furring strip 11 via a connecting member 12, and one vertical furring strip 41b adjacent to the vertical furring strip 41a on the opposite side of the auxiliary furring strip 11. The long fastener 95 is attached to the auxiliary furring strip 11 and the vertical furring strips 41a and 41b to support the decorative panel 3 adjacent to the corner member 101. In addition, of the pair of adjacent panels 2, the auxiliary furring strip 11 is connected to the vertical furring strip 41 of the losing panel 2 via a connecting member 12, but instead of using an L-angle 122 or a T-joint 13, the connecting member body 121, the vertical furring strip 41 and the auxiliary furring strip 11 are directly welded together.

[0061] Figure 26 shows the configuration at the inner corner 70 of the exterior wall. At this inner corner 70, an auxiliary furring strip 11 is connected to the vertical furring strip 41 of the losing panel 2 of a pair of adjacent panels 2 via a connecting member 12. The decorative panel 3 at the front of the losing panel 2 is supported by a long fastener 95 near the inner corner 70 and attached to the losing panel 2 via the auxiliary furring strip 11 and the vertical furring strip 41. The long fastener 95 is attached across the auxiliary furring strip 11, the vertical furring strip 41a connected to the auxiliary furring strip 11 via the connecting member 12, and one vertical furring strip 41b adjacent to the vertical furring strip 41a on the opposite side of the auxiliary furring strip 11. The winning panel 2 does not require the auxiliary furring strip 11 because the vertical furring strip 41 is located near the end of the decorative panel 3, and the decorative panel 3 is attached using the vertical furring strip 41 and the short fastener 96. In addition, the auxiliary furring strips 11 are connected to the vertical furring strips 41 of the losing panel 2 via connecting members 12, but instead of using L-angles 122 or T-joints 13, the connecting member body 121, the vertical furring strips 41 and the auxiliary furring strips 11 are directly welded together.

[0062] Figure 27 shows the configuration at the inner corner 70 of the exterior wall. At this inner corner 70, auxiliary furring strips 11 are connected via connecting members 12 to the vertical furring strips 41 of both the winning and losing panels 2 of a pair of adjacent panels 2. The front decorative panels 3 of each of the winning and losing panels 2 are supported by long fasteners 95 near the inner corner 70 and attached to each of the winning and losing panels 2 via the auxiliary furring strips 11 and vertical furring strips 41. Each long fastener 95 is attached across the auxiliary furring strip 11, the vertical furring strip 41a connected to the auxiliary furring strip 11 via the connecting member 12, and one vertical furring strip 41b adjacent to the vertical furring strip 41 on the opposite side of the auxiliary furring strip 11. In addition, the auxiliary furring strips 11 are connected to the vertical furring strips 41 of the winning side's panel 2 via connecting members 12, but instead of using L-angles 122 or T-joints 13, the connecting member body 121, the vertical furring strips 41 and the auxiliary furring strips 11 are directly welded together.

[0063] Figure 28 shows the dividing section of the exterior wall. A dividing piece 30 made of the same material as the decorative surface material 3 is provided in this dividing section, and this dividing piece 30 is fixed to the auxiliary furring strip 11 with a fastener 39 via a spacer. The auxiliary furring strip 11 is connected to the adjacent vertical furring strip 41 via a connecting member 12. The fastener 95 for long items is attached across the auxiliary furring strip 11, the vertical furring strip 41a connected to the auxiliary furring strip 11 via the connecting member 12, and one vertical furring strip 41b adjacent to the vertical furring strip 41a on the opposite side of the auxiliary furring strip 11. The fastener 95 for long items is attached to the auxiliary furring strip 11 and the vertical furring strips 41a and 41b so as to support the decorative surface material 3 adjacent to the dividing piece 30. The dividing piece 30 may be a dedicated component prepared in advance, or the corner piece 101 may be cut and processed on site.

[0064] In the modified examples shown in Figures 23 to 28, the long fasteners 95 are attached across the auxiliary furring strip 11, the vertical furring strip 41a connected to the auxiliary furring strip 11 via the connecting member 12, and one vertical furring strip 41b adjacent to the vertical furring strip 41 on the opposite side of the auxiliary furring strip 11. As a result, the auxiliary furring strip 11 is connected to at least two vertical furring strips 41 via the long fasteners 95, improving the attachment strength of the auxiliary furring strip 11. As shown in the modified examples in Figures 23 to 28, the long fasteners 95 are attached only to the auxiliary furring strip 11, the vertical furring strip 41a connected to the auxiliary furring strip 11 via the connecting member 12, and one vertical furring strip 41b adjacent to the vertical furring strip 41 on the opposite side of the auxiliary furring strip 11. Short fasteners 96 may be attached to the others, and this does not prevent the use of both long fasteners 95 and short fasteners 96 in a single building. Furthermore, depending on the building in question, it is not prohibited to use short or long fasteners 9.

[0065] Figure 30 shows yet another modified example of the mounting state of the fastener 9. In this modified example, long fasteners 95 and short fasteners 96 are used in combination to improve the mounting strength of the auxiliary furring strips 11 regardless of the floor height. For example, the long fasteners 95 can be those shown in Figures 29A and B. The short fasteners 96 can be the same as those shown in Figures 1A and 1B, 6, 9 to 13, 15, 16, 22A and 22B. Each part will be explained below.

[0066] Figure 30 shows the structure of an opening 50 in an exterior wall, similar to that in Figures 17A-C and 24. Frame materials 60, such as window frames and door frames, are attached to the periphery of the opening 50. Similar to Figures 17A-C and 24, the auxiliary furring strips 11 are formed to be longer than the vertical dimension of the opening 50 and are positioned on both sides of the opening 50 so as to protrude above and below the opening 50. Each auxiliary furring strip 11 is connected to the nearest vertical furring strip 41 via a connecting member 12. In this modified example, as in Figure 24, both short fasteners 96 and long fasteners 95 are used as fasteners 9. However, in this modified example, unlike in Figure 24, the short sides 32 of multiple decorative surface materials 3 are adjacent to each other in the left-right direction on the front surface of the vertical furring strip 41a connected to the auxiliary furring strip 11 via the connecting member 12. An elastic body 36 is provided between the short sides 32. Examples of elastic materials 36 include sealing materials, which ensure waterproofing between the decorative panels 3. The elastic material 36 has elasticity such that it does not expand or contract and break even when the decorative panels 3 move due to rocking motion. The elastic material 36 is supported by backup materials 35 such as hat-shaped joiners or single-sided hat-shaped joiners and is positioned in the joint between the short sides 32 of the decorative panels 3. The fasteners 95 for long items are attached across the auxiliary furring strips 11 and one vertical furring strip 41. In other words, the fasteners 95 for long items are attached across the auxiliary furring strips 11 and a vertical furring strip 41a connected to the auxiliary furring strips 11 via a connecting material 12. This allows the fasteners 95 for long items to not interfere with the backup materials 35 and improves the attachment strength of the auxiliary furring strips 11.

[0067] In this modified example, a short fastener 96 is used on the opposite side of the backup material 35, but the method is not limited to this, and a long fastener 95 may also be used.

[0068] Furthermore, this modified form can be used not only for openings, but also for corners, recessed corners, and dividing sections as needed.

[0069] (summary) In the first embodiment of the wall structure 1, panels 2 with a roughly rectangular surface are arranged in the vertical, horizontal, and vertical directions with their long sides 21 adjacent to each other and their short sides 22 adjacent to each other. A decorative surface material 3 with a roughly rectangular surface is attached to the surface side of the panels 2 via furring strips 4. At the attachment points of the decorative surface material 3, auxiliary furring strips 11 are provided where the furring strips 4 are not located, and are connected to the furring strips 4 via connecting members 12.

[0070] According to the first embodiment, the decorative surface material 3 has the advantage that it can be attached to auxiliary furring strips 11 connected to the furring strips 4 via connecting members 12, even in places where the furring strips 4 are not located.

[0071] In the second embodiment, panels 2, each having a roughly rectangular surface and a locking mechanism, are arranged vertically with their long sides adjacent to each other and their short sides adjacent to each other. Furring strips 4 are attached to the surface of the panels 2 via adapters 6 in a direction perpendicular to the decorative surface material. Decorative surface material 3, also having a roughly rectangular surface, is attached horizontally along its long side to the furring strips 4 on the surface side of the panels 2 via fasteners (fasteners) 9. This wall structure is installed in a way that does not easily interfere with the locking of multiple panels 2, and by attaching auxiliary furring strips 11 to the furring strips 4 via connecting members 12 at openings, outer corners, and inner corners, the decorative surface material 3 is attached, thereby having the same deformation-following performance as the furring strips 4.

[0072] According to the second embodiment, the rocking of the panel 2 is less likely to be obstructed by the decorative surface material 3, vertical furring strips 41, auxiliary furring strips 11 and connecting material 12, and the decorative surface material 3 can be easily attached even at openings, outer corners and inner corners.

[0073] The third embodiment is a wall structure 1 of the first or second embodiment, wherein each panel 2 is vertically mounted to the structural frame in a rocking manner. The furring strips 4 are vertical furring strips 41 that are long in the vertical direction. Each vertical furring strip 41 is mounted to each panel 2 so as to be positioned substantially in a straight line in the center in the short side direction and in the vertical direction via an adapter 6. The adapter 6 has a mechanism that can mitigate the movement of the vertical furring strips 41 in response to the rocking of the panel 2. The decorative surface material 3 is attached to the vertical furring strips 41 in a horizontally laminated manner.

[0074] According to the third embodiment, since the vertical furring strips 41 are separated for each panel 2, the rocking of multiple panels 2 is less likely to be hindered by the vertical furring strips 41, and since the vertical furring strips 41 are attached via the adapter 6, there is an advantage that the movement of the vertical furring strips 41 can be mitigated.

[0075] The fourth embodiment is a wall structure 1 according to any one of the first to third embodiments, wherein the connecting member 12 comprises a connecting member body 121 and at least a pair of L-angles 122. One end of the connecting member body 121 is connected to the vertical furring strip 41 closest to the auxiliary furring strip 11 by at least one of the pair of L-angles 122. The other end of the connecting member body 12 is connected to the auxiliary furring strip 11 by at least one of the other L-angles 122.

[0076] According to the fourth embodiment, the auxiliary furring strip 11 can be easily attached to the vertical furring strip 41 in a cantilevered manner using the L-angle 122, which has the advantage that the rocking of the panel 2 is less likely to be hindered by the auxiliary furring strip 11 and the connecting member 12.

[0077] The fifth embodiment is a wall structure 1 according to any one of the first to third embodiments, wherein the connecting member 12 comprises a connecting member body 121 and a pair of T-shaped joints 13. One end of the connecting member body 121 is connected to the vertical furring strip 41 closest to the auxiliary furring strip 11 by one of the pair of T-shaped joints 13. The other end of the connecting member body 121 is connected to the auxiliary furring strip 11 by the other of the pair of T-shaped joints 13.

[0078] According to the fifth embodiment, the auxiliary furring strip 11 can be easily attached to the vertical furring strip 41 in a cantilevered manner using the T-shaped joint 13, which has the advantage that the rocking of the panel 2 is less likely to be hindered by the auxiliary furring strip 11 and the connecting member 12.

[0079] The sixth embodiment is a wall structure 1 according to any one of the first to fifth embodiments, wherein the connecting member 12 forms a base by fixing auxiliary furring strips 11 for attaching decorative surface material 3 to furring strips 4 at openings in the wall surface.

[0080] According to the sixth embodiment, since the decorative surface material 3 is attached to the auxiliary furring strip 11 provided near the opening, the rocking of the multiple panels 2 is less likely to be obstructed by the vertical furring strip 41, and the furring strip 4 and the auxiliary furring strip 41 operate in conjunction, which is an advantage.

[0081] The seventh embodiment is a wall structure 1 according to any one of the first to sixth embodiments, wherein a pair of adjacent panels 2 at an external corner 10 are arranged via an elastic body 8, with one being the winning side and the other the losing side, and are attached to the structural frame 5. A vertical furring strip 41 is attached to each of the adjacent pair of panels 2, and an auxiliary furring strip 11 is connected to each vertical furring strip 41 via a connecting member 12 in the direction of the external corner 10. The auxiliary furring strip 11 connected to the vertical furring strip 41 of the winning panel 2 protrudes outward from the end 23 of the winning panel 2. The auxiliary furring strip 11 connected to the vertical furring strip 41 of the losing panel 2 is located near the end 23 of the winning panel 2. The joint 33 at the end 34 of the decorative surface material 3 is locked to a fastener 9 fixed to the auxiliary furring strip 41 of the winning panel 2. The corner piece fastener 91, which is fixed to the auxiliary furring strip 11, has both ends 102 of the corner piece 101, which has a roughly L-shaped cross section. The end 34 of the decorative panel material is fastened to a fastener 9, which is fixed to the auxiliary furring strip 11 of the panel 2 on the losing side.

[0082] According to the seventh embodiment, since both pieces 102 of the corner member 101, which has a substantially L-shaped cross section, are locked to the auxiliary furring strip 11 of the winning panel 2, there is an advantage that the locking of multiple panels 2 acts on both pieces 102 simultaneously, making it difficult for distortion to occur in the corner member 101.

[0083] The eighth embodiment is a wall structure 1 according to any one of the first to seven embodiments, wherein a decorative surface material 3 is laminated and attached to a furring strip 4 attached to the surface of a panel 2 via fasteners 9, and at least a portion of the fasteners 9 is elongated, and the fasteners 95 of the elongated material are attached across an auxiliary furring strip 11 and a furring strip 4 connected to the auxiliary furring strip 11 via a connecting member 12.

[0084] According to the eighth embodiment, the auxiliary furring strip 11 is attached to the furring strip 4 via a long fastener 95, which has the advantage of improving the attachment strength of the auxiliary furring strip 11, which is cantilevered by the connecting member 12.

[0085] The ninth embodiment is a wall structure 1 according to any one of the first to seven embodiments, wherein a decorative surface material 3 is laminated and attached to furring strips 4 attached to the surface of a panel 2 via fasteners 9. At least a portion of the fasteners 9 is elongated, and the elongated fasteners 95 are attached to at least an auxiliary furring strip 11, a furring strip 4 connected to the auxiliary furring strip 11 via a connecting member 12, and one furring strip 4 adjacent to the furring strip 4 on the opposite side from the auxiliary furring strip 11.

[0086] According to the ninth embodiment, the auxiliary furring strip 11 is attached to at least two furring strips 4 via long fasteners 95, which has the advantage of improving the attachment strength of the auxiliary furring strip 11, which is cantilevered by the connecting member 12.

[0087] The tenth embodiment is a wall structure 1 according to any one of the first to ninth embodiments, wherein the plurality of panels 2 are made of ALC panels 2, and the plurality of decorative surface materials 3 are made of ceramic siding.

[0088] According to the tenth embodiment, there is the advantage that ALC panels 2 and ceramic siding, which are commonly used in the walls of buildings, can be used. [Explanation of Symbols]

[0089] 1 External wall structure 12 Connecting material 121 Connecting material body 122 L-angle 13 T-type joint 2 panels 21 Long side 22 Short side 23 small 3. Decorative surface material 30 Tension material 31 Long side 32 Short side 33. Practical Section 34 End 4. Furring strips 41 Vertical furring strips 5 Structural frame 6 adapters 9 Fasteners 95 Fasteners for long objects 96 Fasteners for short items 10 Corner section 101 Corner lumber 102 Both sides

Claims

1. A wall structure in which panels with a substantially rectangular surface are arranged in the vertical and horizontal directions with their long sides adjacent to each other and their short sides adjacent to each other, and a decorative surface material with a substantially rectangular surface is attached to the surface side of the panels via furring strips, wherein at the mounting position of the decorative surface material, auxiliary furring strips are provided at locations where the furring strips are not located, and are connected to the furring strips via connecting members so as to move in conjunction with the furring strips when the panels are rocking, and the decorative surface material is attached to the furring strips and the auxiliary furring strips.

2. A wall structure comprising panels with a roughly rectangular surface having a rocking mechanism, arranged vertically with their long sides adjacent to each other and their short sides adjacent to each other, with furring strips attached to the surface of the panels via adapters in a direction perpendicular to the decorative surface material, and the roughly rectangular decorative surface material being attached horizontally along the long side direction to the furring strips on the surface side of the panels via fasteners, and attached in a manner that does not easily interfere with the rocking of the panels, wherein auxiliary furring strips are attached to the furring strips via connecting members at openings, outer corners and inner corners, and the decorative surface material is attached to them, thereby having the same deformation-following performance as the furring strips, and the auxiliary furring strips are not fixed to the panels but are connected to the furring strips in a cantilevered state by the connecting members, thereby forming a wall structure.

3. The wall structure according to claim 1 or 2, wherein each panel is mounted vertically to the structural frame in a lockable manner, the furring strips are vertically elongated, each vertical furring strip is mounted to each panel such that it is positioned substantially in a straight line with the center in the short-side direction and vertically via an adapter, the adapter has a mechanism that can mitigate the movement of the vertical furring strips when the panel is rocked, and the decorative surface material is attached to the vertical furring strips in a horizontally laminated manner.

4. The wall structure according to claim 3, wherein the connecting member comprises a connecting member body and at least a pair of L-angles, one end of the connecting member body is connected to the vertical furring strip closest to the auxiliary furring strip by at least one of the at least pair of L-angles, and the other end of the connecting member body is connected to the auxiliary furring strip by at least one other of the at least pair of L-angles.

5. The wall structure according to claim 3, wherein the connecting member comprises a connecting member body and a pair of T-shaped joints, one end of the connecting member body is connected to the vertical furring strip closest to the auxiliary furring strip by one of the pair of T-shaped joints, and the other end of the connecting member body is connected to the auxiliary furring strip by the other of the pair of T-shaped joints.

6. The wall structure according to any one of claims 1 to 5, wherein the connecting member is fixed to the furring strips at the opening in the wall surface to form a base for attaching decorative paneling.

7. A wall structure according to any one of claims 3 to 5, wherein a pair of adjacent panels at an external corner are arranged via an elastic body with one being the winning side and the other the losing side, and vertical furring strips are attached to each of the adjacent pairs of panels, and auxiliary furring strips are connected to each vertical furring strip in the direction of the external corner via connecting members, the auxiliary furring strip connected to the vertical furring strip of the winning side panel protrudes outward from the end of the winning side panel, the auxiliary furring strip connected to the vertical furring strip of the losing side panel is located near the end of the winning side panel, the end of the decorative surface material is locked to a fastener fixed to the auxiliary furring strip of the winning side panel, both pieces of a corner material with a substantially L-shaped cross section are locked to an external corner material fastener fixed to the auxiliary furring strip, and the end of the decorative surface material is locked to a fastener fixed to the auxiliary furring strip of the losing side panel.

8. The wall structure according to any one of claims 1 to 7, wherein the decorative surface material is laminated and attached to the furring strips attached to the surface of the panel via fasteners, and at least a portion of the fasteners are elongated, and the elongated fasteners are attached across the auxiliary furring strips and the furring strips connected to the auxiliary furring strips via the connecting members.

9. The wall structure according to any one of claims 1 to 7, wherein the decorative surface material is laminated and attached to the furring strips attached to the surface of the panel via fasteners, and at least a portion of the fasteners are elongated, and the elongated fasteners are attached to at least the auxiliary furring strip, the furring strip connected to the auxiliary furring strip via the connecting material, and one of the furring strips adjacent to the furring strip on the opposite side from the auxiliary furring strip.

10. The wall structure according to any one of claims 1 to 9, wherein the panel is made of ALC panel and the decorative surface material is made of ceramic siding.

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