Expandable house structure

Abstract

A house structure is initially folded into a small box-like configuration for easy shipment and can expand both horizontally and vertically to form a traditional one-floor house-like configuration with inclined roofing. Parts of the front and rear walls are folded and stacked with ends of the main structure to save space in the width of the folded structure. Parts of the floor panels are vertically stacked with the sidewalls. These moveable floor parts are linked with the sidewalls and the middle floor panel through designed connection blocks. When the sidewalls are pushed outward, the floor panel will gradually slide and lay down. After setting up the sidewall and floor framework, the roof subassembly can be driven upward and rotate outward its set of wall wedge panels to encapsulate the opening area due to the inclined roof profile and offer support for the roof panels which are linked via connection blocks.

What is claimed is: 
     
         1 . A mobile house comprising:
 a main structure;   a first expansion section, the first expansion section expandable outward from a first side of the main structure;   front and rear main structure expansion walls that are extendable upward from the front and rear walls of the main structure, the front and rear main structure expansion walls supporting a retractable roof that, once the front and rear main structure expansion walls are extended, permits expansion of the retractable roof at over the first expansion sections.   
     
     
         2 . The mobile house of  claim 1 , wherein the first expansion section includes a first front folding wall disposed against the front wall of the main structure, and a first rear folding wall disposed against the rear wall of the main structure, when in a folded state. 
     
     
         3 . The mobile house of  claim 2 , wherein the first front folding wall pivots about 180 degrees on a first pivot axis formed along a first side of the front wall and the first rear folding wall pivots about 180 degrees on a second pivot axis formed on a first side of the rear wall to form the first expandable section. 
     
     
         4 . The mobile house of  claim 3 , further comprising a second expansion section, the second expansion section expandable outward from a second side of the main structure. 
     
     
         5 . The mobile house of  claim 4 , wherein the second expandable section includes a second front folding wall disposed against the front wall of the main structure, and a second rear folding wall disposed against the rear wall of the main structure, when in a folded state. 
     
     
         6 . The mobile house of  claim 5 , wherein:
 the first front folding wall stacks on top of the second front folding wall, adjacent the front wall, in the folded state; and   the first rear folding wall stacks on top of the second rear folding wall, adjacent the rear wall, in the folded state.   
     
     
         7 . The mobile house of  claim 5 , wherein the second front folding wall pivots about 180 degrees on a third pivot axis formed along a second side of the front wall and the second rear folding wall pivots about 180 degrees on a fourth pivot axis formed on a second side of the rear wall to form the second expansion section. 
     
     
         8 . The mobile house of  claim 7 , further comprising:
 a first set of hinges having a first hinge pivot axis that forms the first pivot axis for the first front folding wall; and   a second set of hinges having a second hinge pivot axis that forms the third pivot axis for the first rear folding wall.   
     
     
         9 . The mobile house of  claim 8 , wherein:
 the first set of hinges have a first side connected to the first front folding wall and the first set of hinges have a second side attached to an expansion arm that extends from and retracts into the front wall; and   the second set of hinges have a first side connected to the first rear folding wall and the second set of hinges have a second side attached to an expansion arm that extends from and retracts into the rear wall.   
     
     
         10 . The mobile house of  claim 9 , wherein the expansion arm:
 permits a stacking arrangement of the first front folding wall and the second front folding wall against the front wall in the folded state;   permits a stacking arrangement of the first rear folding wall and the second rear folding wall against the rear wall in the folded state;   moves the first front folding wall to be flush with the front wall after unfolding the first front folding wall; and   moves the first rear folding wall to be flush with the rear wall after unfolding the first rear folding wall.   
     
     
         11 . The mobile house of  claim 1 , further comprising side wall extension wedges foldable coplanar with a side wall of the main structure in a folded state, wherein the side wall extension wedges are pivotable to form a sloped upper surface that supports the retractable roof at an incline in an expanded state. 
     
     
         12 . The mobile house of  claim 2 , further comprising a sliding outer wall that extends outward between the first front folding wall and the first rear folded when in the expanded state. 
     
     
         13 . The mobile house of  claim 12 , further comprising a floor panel pivotably attached to and slidable along the sliding outer wall, the floor panel disposed vertically against the main structure in the folded state and disposed horizontally between the main structure and the sliding outer wall in the expanded state. 
     
     
         14 . The mobile house of  claim 13 , wherein the floor panel connects to the sliding outer wall with a connector, the connector having:
 a floor panel attachment piece that pivotably connects to the floor panel;   a sliding outer wall attachment piece that pivotably connects to the sliding outer wall;   a slot and pin interconnection between the floor panel attachment piece and the sliding outer wall attachment piece to permit lengthwise movement of the connector.   
     
     
         15 . A mobile house comprising:
 a main structure;   a first expansion section, the first expansion section expandable outward from a first side of the main structure; and   front and rear main structure expansion walls that are extendable upward from the front and rear walls of the main structure, the front and rear main structure expansion walls supporting a retractable roof that, once the front and rear main structure expansion walls are extended, permits expansion of the retractable roof at an incline over the first expansion sections, wherein:   the first expansion section includes a first front folding wall disposed against the front wall of the main structure, and a first rear folding wall disposed against the rear wall of the main structure, when in a folded state; and   the first front folding wall pivots about 180 degrees on a first pivot axis formed along a first side of the front wall and the first rear folding wall pivots about 180 degrees on a second pivot axis formed on a first side of the rear wall to form the first expandable section.   
     
     
         16 . The expandable house of  claim 15 , further comprising a second expansion section, the second expansion section expandable outward from a second side of the main structure, wherein:
 the second expandable section includes a second front folding wall disposed against the front wall of the main structure, and a second rear folding wall disposed against the rear wall of the main structure, when in a folded state; and   the second front folding wall pivots about 180 degrees on a third pivot axis formed along a second side of the front wall and the second rear folding wall pivots about 180 degrees on a fourth pivot axis formed on a second side of the rear wall to form the second expansion section.   
     
     
         17 . The mobile house of  claim 16 , wherein:
 the first front folding wall stacks on top of the second front folding wall, adjacent the front wall, in the folded state; and   the first rear folding wall stacks on top of the second rear folding wall, adjacent the rear wall, in the folded state.   
     
     
         18 . A mobile house comprising:
 a main structure;   a first expansion section, the first expansion section expandable outward from a first side of the main structure;   a second expansion section, the second expansion section expandable outward from a second side of the main structure; and   front and rear main structure expansion walls that are extendable upward from the front and rear walls of the main structure, the front and rear main structure expansion walls supporting a retractable roof that, once the front and rear main structure expansion walls are extended, permits expansion of the retractable roof at an incline over the first and second expansion sections, wherein:   the first expansion section includes a first front folding wall disposed against the front wall of the main structure, and a first rear folding wall disposed against the rear wall of the main structure, when in a folded state;   the first front folding wall pivots about 180 degrees on a first pivot axis formed along a first side of the front wall and the first rear folding wall pivots about 180 degrees on a second pivot axis formed on a first side of the rear wall to form the first expandable section;   the second expandable section includes a second front folding wall disposed against the front wall of the main structure, and a second rear folding wall disposed against the rear wall of the main structure, when in a folded state;   the second front folding wall pivots about 180 degrees on a third pivot axis formed along a second side of the front wall and the second rear folding wall pivots about 180 degrees on a fourth pivot axis formed on a second side of the rear wall to form the second expansion section;   the first front folding wall stacks on top of the second front folding wall, adjacent the front wall, in the folded state; and   the first rear folding wall stacks on top of the second rear folding wall, adjacent the rear wall, in the folded state, and the mobile house further comprises:   a first set of hinges having a first hinge pivot axis that forms the first pivot axis for the first front folding wall; and   a second set of hinges having a second hinge pivot axis that forms the third pivot axis for the first rear folding wall, wherein:   the first set of hinges have a first side connected to the first front folding wall and the first set of hinges have a second side attached to an expansion arm that extends from and retracts into the front wall; and   the second set of hinges have a first side connected to the first rear folding wall and the second set of hinges have a second side attached to an expansion arm that extends from and retracts into the rear wall.   
     
     
         19 . The mobile house of  claim 18 , further comprising a sliding outer wall that extends outward between the first front folding wall and the first rear folded when in the expanded state. 
     
     
         20 . The mobile house of  claim 19 , further comprising a floor panel pivotably attached to and slidable along the sliding outer wall, the floor panel disposed vertically against the main structure in the folded state and disposed horizontally between the main structure and the sliding outer wall in the expanded state, wherein the floor panel connects to the sliding outer wall with a connector, the connector having:
 a floor panel attachment piece that pivotably connects to the floor panel;   a sliding outer wall attachment piece that pivotably connects to the sliding outer wall;   a slot and pin interconnection between the floor panel attachment piece and the sliding outer wall attachment piece to permit lengthwise movement of the connector.