Wall Exterior Structure for Outer Wall Heat-Insulated Building and Wall Exterior Base, Lateral Furring Frame for Wall Exterior Material Installation and Method for Covering Wall Using Lateral Furring Frame, and Exterior Base Material and Outer Wall Using Exterior Base Material

Abstract

In a wall exterior structure, an exterior base is formed of a number of vertical furring strips and a number of lateral furring strips, which are arranged in lattice to each other, each furring strip being a C-shaped channel material. A latch tongue, formed to an upright piece of each vertical furring strip, is latched to an upper through hole in each lateral furring strip. The upright piece is disposed at the position where a vertical furring strip intersects a lateral furring strip. The exterior base is provided by fixing the vertical furring strips on the surface of an outer heat insulating layer. An exterior material is hung to the exterior base so that an outer wall is made through a simple work. A ventilation space of about 5 mm, depending on the thickness of the vertical furring strip, is defined outside the outer heat insulating layer. The ventilation space is generally about 2 cm in thick. Hence, the reduced ventilation space can improve the heat insulation property of a building.

1 . A wall exterior structure comprising: 
 vertical furring strips arranged vertically and substantially in parallel on a surface of an outer wall on which an outer heat insulating layer is formed;    lateral furring strips suspended in lattice and horizontally intersecting with said vertical furring strips;    a furring strip frame, acting as an exterior base, including each vertical furring strip acting as an inner side and each lateral furring strip acting as an outer side; and    an exterior material sustained to an engaged portion in a surface of each lateral furring strip;    said vertical furring strip including vertical latch portions arranged at predetermined intervals at intersections between said vertical furring strip and said lateral furring strips;    said lateral furring strip including lateral latch portions paired with said vertical latch portions;    said furring strip frame engaging each lateral latch portion corresponding to said lateral furring strip sustained to the vertical furring strip, to each vertical latch portion in said vertical furring strip;    wherein a ventilation space corresponding to a width of said vertical furring strip is defined between said outer heat insulating layer and said lateral furring strip.    
     
     
         2 . The wall exterior structure defined in  claim 1 , wherein said outer heat insulating layer is pressed against the surface of said outer wall by said vertical furring strips arranged on said outer wall surface.  
     
     
         3 . The wall exterior structure defined in  claim 1 , wherein said vertical furring strip has low vertical rims erected at both ends thereof and said lateral furring strip has low lateral rims erected at both ends thereof; and wherein said lateral latch portion in a base surface between said lateral rims is paired with and snapped into said vertical latch portion formed in a base surface between said vertical rims; and wherein a gap of said ventilation space is set by the size of rims protruded at said lateral latch portion.  
     
     
         4 . The wall exterior structure defined in  claim 3 , wherein said lateral furring strips are orthogonally arranged in lattice with said vertical rims of said vertical furring strips from the outside; and wherein each lateral latch portion of said lateral furring strip is snapped into each vertical latch portion of said vertical furring strip by slidably guiding said lateral furring strip over the plane of said vertical rims.  
     
     
         5 . The wall exterior structure defined in  claim 1 , wherein the gap of said ventilation space defined between said exterior base and said outer heat insulating layer is set to 1 cm or less.  
     
     
         6 . A wall exterior base in an outer wall heat-insulated building, comprising: 
 vertical furring strips arranged vertically and substantially in parallel to an outer wall surface of a building and each having low rims elected at both ends of each vertical furring strip;    lateral furring strips horizontally intersecting vertical rims of each vertical furring strip and suspended in lattice and having rims erected at both ends thereof;    wherein an exterior material is suspended over the lateral erect rims of said lateral furring strip;    said vertical furring strip disposed on said outer wall surface having a vertical latch portion corresponding to a position where said vertical furring strip intersects said lateral furring strip;    said lateral furring strip having a lateral latch portion corresponding to a position where said lateral furring strip intersects said vertical furring strip;    said lateral furring strips orthogonally arranged in lattice over the plane of rims of said vertical furring strip from the outside;    wherein said latch portion of said lateral furring strip is snapped into said latch portion of said vertical furring strip by slidably guiding said rims of said vertical furring strip.    
     
     
         7 . A lateral furring frame for wall exterior material installation in an outer wall heat-insulated building, comprising; 
 second vertical furring strips arranged vertically and substantially parallel to an outer wall surface;    second standard lateral furring strips intersecting horizontally and sustained in lattice to said second vertical furring strips; and a combination of said second auxiliary extension furring strip and said second standard lateral furring strip, acting as a mounting base for exterior material suspension;    said second auxiliary extension furring strip combined together with said second standard lateral furring strip and slidably inserted to said second standard lateral furring strip;    wherein in correspondence with a width in horizontal direction of said outer wall surface, an end of said second auxiliary extension furring strip is variably extended from an end in an elongated direction of said second standard lateral furring strip.    
     
     
         8 . The lateral furring frame defined in  claim 7 , wherein various second standard lateral furring strips having different standard dimensions are prepared; and wherein said second auxiliary extension furring strips are combined compatibly to said various second short lateral furring strips.  
     
     
         9 . The lateral furring frame defined in  claim 7 , wherein each of said second standard lateral furring strip and said second auxiliary extension furring strip is formed of a shaped metal plate of steel plate, galvanized sheet iron, or aluminum, shaped through deformation processing such as roll forming, press forming, and extrusion.  
     
     
         10 . The lateral furring frame defined in  claim 7 , wherein the length in lateral direction of said second auxiliary extension furring strip is adjusted arbitrarily and slidably with said second auxiliary extension furring strip combined with said second standard lateral furring strip.  
     
     
         11 . The lateral furring frame defined in  claim 10 , wherein said second auxiliary furring strip is slidably inserted squarely into said second standard lateral furring strip and can be sled arbitrarily in the inserted state.  
     
     
         12 . The lateral furring frame defined in  claim 11 , further comprising slide regulation means, disposed on both ends of said second standard lateral furring strip, to travel between said second standard lateral furring strip and said second auxiliary extension furring strip or between said second vertical furring strip and said second auxiliary extension furring strip and through said second standard lateral furring strip over a desired length range; and wherein said second auxiliary extension furring strip is inserted and sled into said second short lateral furring strip, within a regulation range of said slide regulation means.  
     
     
         13 . The lateral furring frame defined in  claim 7 , wherein each of said second standard lateral furring strip and said second auxiliary extension furring strip has a substantially U-shaped cross section to be slidable, with said second standard lateral furring strip and said second auxiliary extension furring strip mutually inserted; and wherein each of said second furring strip has a furring base formed in a bottom portion in the U-shaped strip and respective engagement portions for exterior material suspension, 
 vertically arranged at both ends on the front side.    
     
     
         14 . A method for covering wall surfaces with a lateral furring frame to dispose a wall exterior material of an outer wall heat insulate building, comprising steps of: 
 using a lateral furring frame for outer exterior installation in  claim 7  (a lateral furring frame for outer exterior material installation in which a second standard lateral furring strip and a second auxiliary extension furring strip are combined together); and    disposing said lateral furring strip for outer exterior material installation over the entire width of the said outer wall surface through a single or plural second auxiliary extension furring strip, whereby said outer exterior material is suspended to said lateral furring frame.    
     
     
         15 . A metallic wall exterior material base in an outer wall heat insulated building, comprising: 
 third metallic vertical furring strips arranged vertically and substantially in parallel to an outer wall surface;    third metallic standard lateral furring strips suspended in lattice to intersect horizontally said third metallic vertical furring strips; and    third metallic auxiliary extension furring strips slidably inserted to said third metallic standard lateral furring strips;    said third metallic standard lateral furring strips and said third metallic auxiliary extension furring strips acting as an exterior material mounting base for suspension;    wherein, to suspend said third metallic standard lateral furring strips to said third metallic vertical furring strips, each third metallic vertical furring strips has brackets formed at predetermined intervals;    each of said third metallic standard lateral furring strips having through holes to engage a bracket at a corresponding intersection to said third metallic vertical furring strip;    wherein a though hole in said third metallic standard lateral furring strip is engaged to a bracket of said third metallic vertical furring strip and the upper inner edge of said through hole is hung and suspended;    wherein, to insert slidably said third metallic auxiliary extension furring strip to said third metallic standard lateral furring strip, said third metallic standard lateral furring strip has a lateral cross section opened in the front side;    said third metallic auxiliary extension furring strip, which has the cross section substantially in common with said third metallic standard lateral furring strip, is loosely mounted squarely to said third metallic standard lateral furring strip.    
     
     
         16 . The metallic wall exterior material base defined in  claim 15 , wherein, to regulate a sliding range of said third metallic auxiliary extension furring strip to said third metallic standard lateral furring strip, a pair of stoppers butts both ends in horizontal cross direction of a bracket of said third metallic vertical furring strip, said bracket protruding toward the front side via a through hole for hanging in said third metallic standard lateral furring strip and via a through hole for sliding in said third metallic auxiliary extension furring strip, said pair of stoppers being formed at both inner ends of said through hole, for sliding, in horizontal direction at predetermined intervals.  
     
     
         17 . The metallic wall exterior material base defined in  claim 15 , further comprising a downward-pointing guide fin formed at the corresponding upper inner edge and between a pair of stoppers, said pair of stoppers being provided to a through hole for sliding in said third metallic auxiliary extension furring strip, and wherein said guide fin contacts slidably to an upper inner surface of a bracket in said third metallic vertical furring strip.  
     
     
         18 . The metallic wall exterior material base defined in  claim 15  wherein said through hole for sliding, formed in said third metallic auxiliary extension furring strip, is rectangular in horizontal and longitudinal direction; and wherein said guide fin is formed downwardly at the middle portion of the upper inner edge in said through hole; and wherein a pair of stoppers is formed at the lower portion on both the horizontal sides of said through hole, such that each of said stoppers overlaps the lower portion of a bracket of said third metallic vertical furring strip.  
     
     
         19 . A metallic wall exterior material base in an outer wall heat insulated building, comprising, 
 a rail unit frame produced by assembling in a lattice form,    fourth metallic vertical rail (fourth metallic vertical furring strip) arranged vertically and substantially in parallel to an outer wall surface;    fourth metallic standard lateral rail (fourth metallic lateral furring strip for bridging) horizontally suspended in lattice with third metallic vertical rails; and    fourth metallic vertical rail for bridging (fourth metallic short furring strip for bridging) slidably inserted into said fourth metallic standard lateral rail in its longitudinal direction;    wherein exterior materials are sustained to said fourth metallic standard lateral rails and said fourth metallic short lateral rail for bridging.    
     
     
         20 . The exterior material base defined in  claim 19 , further comprising fourth metallic extension adjusting lateral rails (fourth metallic extension adjusting lateral furring strips) for adjusting the unit width by extending horizontally and longitudinally said fourth metallic standard lateral rail acting as a part of said rail unit frame; and wherein exterior materials are suspended with said fourth metallic extension adjusting lateral rail, together with said fourth standard lateral rail and said fourth metallic lateral rail for bridging.  
     
     
         21 . The exterior material base defined in  claim 19 , wherein said brackets are formed to said fourth metallic vertical rail acting as part of said rail unit frame vertically and at predetermined intervals; and wherein said fourth metallic standard lateral rail acting as part of said rail unit frame includes engagement holes each in which a bracket is inserted at an intersection to said fourth metallic vertical rail; and wherein the bracket in said fourth metallic vertical rail is inserted into an engagement through hole in said fourth metallic standard lateral rail and engages the upper inner edge of said engagement through hole.  
     
     
         22 . The exterior material base defined in  claim 21 , wherein a bracket in said fourth metallic vertical rail is used in common to said fourth metallic standard lateral rail for bridging to support the upper edge of an engagement through hole in said fourth metallic standard lateral rail; said bracket being supported on the front side of said engagement through hole, whereby said fourth metallic short lateral rail for bridging is coupled to said fourth metallic standard lateral rail.  
     
     
         23 . The exterior material base defined in  claim 21 , wherein a bracket in said fourth metallic vertical rail is used in common to said fourth metallic extension adjusting lateral rail to support the upper edge of an engagement through hole in said fourth metallic standard lateral rail; said bracket being supported on the front side of said engagement through hole, whereby said fourth metallic extension adjusting lateral rail can extend said fourth metallic standard lateral rail.  
     
     
         24 . The exterior material base defined in  claim 22 , wherein a nearly L-shaped bracket in vertical cross section is formed by cutting and electing a bottom portion of said fourth metallic vertical rail; and wherein latch pieces pointing inward and downward are formed in said bracket; and wherein said latch pieces can be snapped into said latch hole formed in said fourth metallic standard lateral rail; and wherein the upper edge of said engagement through hole formed in said fourth metallic short lateral rail for bridging is slidably sandwiched between the bottom portion of said fourth metallic vertical rail and said latch piece.  
     
     
         25 . The exterior material base defined in  claim 23 , wherein said upper edge of said engagement through hole formed in said fourth metallic short lateral rail for bridging is slidably sandwiched between the bottom portion of said fourth metallic vertical rail and said latch piece.  
     
     
         26 . An outer wall using a wall exterior material base in an outer wall heat insulated building, said wall exterior material comprising: 
 fourth metallic vertical rails (fourth metallic vertical furring strips) arranged horizontally and substantially in parallel to an outer wall surface; and    fourth metallic standard lateral rails (fourth metallic standard lateral furring strips) suspended horizontally and in lattice to third metallic vertical rails;    wherein a rail unit frame in lattice is formed of said fourth metallic vertical rails and said fourth metallic standard lateral rails and acts as a wall exterior material base;    wherein an exterior material is suspended to said fourth standard lateral rails and said fourth metallic bridging short lateral rail, which construct said rail unit frame.    
     
     
         27 . The outer wall defined in  claim 26 , further comprising fourth metallic extension adjusting vertical rail (fourth metallic extension adjusting vertical rail) that can extend said fourth metallic standard lateral rail to adjust the unit width of said rail unit frame.