Sectional flooring

Abstract

Disclosed is a sectional flooring capable of making the horizontal assemblage as well as the inclined assemblage without removing the stopper, and fluently conducting the assembling operation without the interference or the breakage of the stopper while reinforcing the coupling between the floor boards. The sectional flooring has a floor board with first and second coupling structures at the lateral sides thereof. The first coupling structure has a protrusion, a prominence connected to the bottom of the protrusion while being bulged opposite to the top surface of the floor board, and a stopper receiving indentation indented from the end of the protrusion to the inside of the floor board. The second coupling structure has a groove, a depression connected to the bottom of the groove while being hollowed toward the bottom surface of the floor board, and a stopper protruded from the end of the depression to the outside of the floor board. The protrusion and the groove have inclined upper sides directed toward the top surface of the floor board with an inclination of 10-30° with respect to an imaginary rectilinear line proceeding parallel to the direction of the plane of the floor board.

1 . A sectional flooring having a floor board with top and bottom surfaces and four lateral sides, the floor board comprising: 
 a first coupling structure formed at one of the lateral sides of the floor board, the first coupling structure having a protrusion, a prominence connected to the bottom of the protrusion while being bulged opposite to the top surface of the floor board, and a stopper receiving indentation indented from the end of the protrusion to the inside of the floor board; and    a second coupling structure formed at another lateral side of the floor board, the second coupling structure having a groove, a depression connected to the bottom of the groove while being hollowed toward the bottom surface of the floor board, and a stopper protruded from the end of the depression to the outside of the floor board;    wherein the protrusion and the groove have inclined upper sides directed toward the top surface of the floor board with an inclination of 10-30° with respect to an imaginary rectilinear line proceeding parallel to the direction of the plane of the floor board.    
   
   
       2 . The sectional flooring of  claim 1  wherein the second coupling structure further has a middle stopper protruded toward the top surface of the floor board between the groove and the depression, and the first coupling structure further has a middle stopper receiving indentation indented toward the top surface between the protrusion and the prominence.  
   
   
       3 . The sectional flooring of  claim 1  wherein the prominence has an inclined lower side, and the stopper has an upper side inclined in the inclining direction of the inclined lower side of the prominence.  
   
   
       4 . The sectional flooring of  claim 1  wherein the prominence has an inclined lateral side connected to the stopper receiving indentation, and the stopper has an inclined lateral side connected to the depression, the inclination of the inclined lateral side of the stopper with respect to an imaginary rectilinear line proceeding parallel to the plane of the floor board being greater than the inclination of the inclined lateral side of the prominence with respect to the imaginary rectilinear line.  
   
   
       5 . The sectional flooring of  claim 4  wherein when the inclination of the inclined lateral side of the prominence with respect to an imaginary rectilinear line proceeding parallel to the direction of the plane of the floor board is θ  1 , and the inclination of the inclined lateral side of the stopper with respect to the imaginary rectilinear line is θ  2 , the floor board satisfies the following condition: θ  2 =θ  1 +a, a=1∫5°.  
   
   
       6 . The sectional flooring of  claim 1  wherein when the thickness of the floor board is assumed to be t, and the distance between the top surface of the floor board and the stopper receiving indentation measured in the direction of the thickness of the floor board to be c, the floor board satisfies the following condition: 0.25≦c/t≦0.40.  
   
   
       7 . A sectional flooring having a floor board with top and bottom surfaces and four lateral sides, the floor board comprising: 
 a first coupling structure formed at one of the lateral sides of the floor board, the first coupling structure having a protrusion, a lower stopper receiving indentation connected to the bottom of the protrusion and indented toward the top surface of the floor board, and an upper stopper receiving indentation indented from the end of the lower stopper receiving indentation toward the top surface of the floor board; and    a second coupling structure formed at another lateral side of the floor board, the second coupling structure having a groove, a lower stopper connected to the bottom of the groove and protruded opposite to the bottom surface of the floor board, and an upper stopper protruded from the end of the lower stopper opposite to the bottom surface of the floor board;    wherein the protrusion and the groove have an inclined upper side with an inclination of 10-30° with respect to an imaginary rectilinear line proceeding parallel to the direction of the plane of the floor board.    
   
   
       8 . The sectional flooring of  claim 7  wherein the lower stopper receiving indentation has an inclined lateral side connected to the bottom of the protrusion, and the lower stopper has an inclined lateral side connected to the bottom of the groove.  
   
   
       9 . The sectional flooring of  claim 7  wherein the upper stopper receiving indentation has an inclined lateral side connected to the lower stopper receiving indentation, and the upper stopper has an inclined lateral side connected to the lower stopper, the inclination of the inclined lateral side of the upper stopper with respect to an imaginary rectilinear line proceeding parallel to the direction of the plane of the floor board being greater than the inclination of the inclined lateral side of the upper stopper receiving indentation with respect to the imaginary rectilinear line.  
   
   
       10 . The sectional flooring of  claim 9  wherein when the inclination of the inclined lateral side of the upper stopper receiving indentation with respect to an imaginary rectilinear line proceeding parallel to the direction of the plane of the floor board is assumed to be θ  3 , and the inclination of the inclined lateral side of the upper stopper with respect to the imaginary line to be θ  4 , the floor board satisfies the following condition: θ  4 =θ  3 +a, a=1˜5°.  
   
   
       11 . The sectional flooring of  claim 7  wherein the floor board has a pair of longitudinal sides and a pair of latitudinal sides, and the first coupling structure is formed at one of the longitudinal sides and one of the latitudinal sides while the second coupling structure being formed at the other longitudinal side and the other latitudinal side.  
   
   
       12 . The sectional flooring of  claim 9  wherein the floor board is formed with a material having the properties of compression and elasticity.  
   
   
       13 . The sectional flooring of  claim 12  wherein the floor board is formed with a wood fiber plate made by press-forming a wood fiber at a given temperature under a given pressure.  
   
   
       14 . A sectional flooring comprising: 
 a first floor board;    a first coupling structure formed at a lateral side of the first floor board, the first coupling structure having a protrusion, a prominence connected to the bottom of the protrusion and bulged opposite to the top surface of the first floor board, and a stopper receiving indentation indented from the end of the prominence to the inside of the first floor board;    a second floor board assembled to the first floor board; and    a second coupling structure formed at a lateral side of the second floor board, the second coupling structure having a groove receiving the protrusion, a depression connected to the bottom of the groove and hollowed toward the bottom surface of the second floor board to receive the prominence, and a stopper protruded from the end of the depression to the outside of the second floor board and inserted into the stopper receiving indentation;    wherein the protrusion and the groove have inclined upper sides directed toward the top surfaces of the first and the second floor boards with an inclination of 10-30° with respect to an imaginary rectilinear line proceeding parallel to the direction of the plane of the first and the second floor boards.    
   
   
       15 . The sectional flooring of  claim 14  wherein the coupling structure of the second floor board further has a middle stopper protruded toward the top surface of the second floor board between the groove and the depression, and the coupling structure of the first floor board further has a middle stopper receiving indentation indented toward the top surface of the first floor board between the protrusion and the prominence.  
   
   
       16 . The sectional flooring of  claim 14  wherein the prominence has an inclined lower side, and the stopper has an upper side inclined in the inclining direction of the inclined lower side of the prominence.  
   
   
       17 . The sectional flooring of  claim 14  wherein the prominence has an inclined lateral side connected to the stopper receiving indentation, and the stopper has an inclined lateral side connected to the depression, the inclination of the inclined lateral side of the stopper with respect to an imaginary rectilinear line proceeding parallel to the plane of the first and the second floor boards being greater than the inclination of the inclined lateral side of the prominence with respect to the imaginary rectilinear line.  
   
   
       18 . The sectional flooring of  claim 17  wherein when the inclination of the inclined lateral side of the prominence with respect to an imaginary rectilinear line proceeding parallel to the direction of the plane of the first and the second floor boards is θ  1 , and the inclination of the inclined lateral side of the stopper with respect to the imaginary rectilinear line is θ  2 , the first and the second floor boards satisfy the following condition: θ  2 =θ  1 +a, a=1˜5°.  
   
   
       19 . The sectional flooring of  claim 14  wherein when the thickness of the first floor board is assumed to be t, and the distance between the top surface of the first floor board and the stopper receiving indentation measured in the direction of the thickness of the first floor board to be c, the first floor board satisfies the following condition: 0.25≦c/t≦0.40.  
   
   
       20 . A sectional flooring comprising: 
 a first floor board;    a first coupling structure formed at a lateral side of the first floor board, the first coupling structure having a protrusion, a lower stopper receiving indentation connected to the bottom of the protrusion and indented toward the top surface of the first floor board, and an upper stopper receiving indentation indented from the end of the lower stopper receiving indentation toward the top surface of the first floor board;    a second floor board assembled to the first floor board; and    a second coupling structure formed at a lateral side of the second floor board, the second coupling structure having a groove receiving the protrusion, a lower stopper connected to the bottom of the groove while being protruded opposite to the bottom surface of the second floor board and inserted into the lower stopper receiving indentation, and an upper stopper protruded from the end of the lower stopper opposite to the bottom surface of the second floor board and inserted into the upper stopper receiving indentation;    wherein the protrusion and the groove have inclined upper sides directed toward the top surfaces of the first and the second floor boards with an inclination of 10-30° with respect to an imaginary rectilinear line proceeding parallel to the direction of the plane of the first and the second floor boards.    
   
   
       21 . The sectional flooring of  claim 20  wherein the lower stopper receiving indentation has an inclined lateral side connected to the bottom of the protrusion, and the lower stopper has an inclined lateral side connected to the bottom of the groove.  
   
   
       22 . The sectional flooring of  claim 20  wherein the upper stopper receiving indentation has an inclined lateral side connected to the lower stopper receiving indentation, and the upper stopper has an inclined lateral side connected to the lower stopper, the inclination of the inclined lateral side of the upper stopper with respect to an imaginary rectilinear line proceeding parallel to the direction of the plane of the first and the second floor boards being greater than the inclination of the inclined lateral side of the upper stopper receiving indentation with respect to the imaginary rectilinear line.  
   
   
       23 . The sectional flooring of  claim 22  wherein when the inclination of the inclined lateral side of the upper stopper receiving indentation with respect to an imaginary rectilinear line proceeding parallel to the plane of the first and the second floor boards is assumed to be θ  3 , and the inclination of the inclined lateral side of the upper stopper with respect to the imaginary rectilinear line to be θ  4 , the first and the second floor boards satisfy the following condition: θ  4 =θ  3 +a, a=1˜5°.  
   
   
       24 . The sectional flooring of  claim 22  wherein the first and the second floor boards are formed with a material having the properties of compression and elasticity.  
   
   
       25 . The sectional flooring of  claim 24  wherein the first and the second floor boards are formed with a wood fiber plate made by press-forming a wood fiber at a given temperature under a given pressure.