Structure connection of motion chair

Abstract

A structure connection of motion chair is disclosed for connecting a chairback to a chair base. The structure connection of motion chair consists of a pair of first supporting members and a pair of second supporting members respectively installed on both sides of the chairback, and a pair of supporting plates respectively installed on both sides of the chair base. The second supporting members are respectively located below the first supporting members, and the supporting plates are respectively corresponding to the first supporting members and the second supporting members, wherein the supporting plates are used for engaging with the first and second supporting members respectively, whereby the chairback and the chair base are connected together.

1 . A structure connection of motion chair, wherein said structure connection is used for connecting a chairback to a chair base, and said structure connection comprises: 
 a pair of first supporting members, respectively installed on both sides of said chairback, wherein said first supporting members are located on the positions near said chair base;    a pair of second supporting members, respectively installed on both sides of said chairback; wherein said second supporting members are respectively located below said first supporting members; and    a pair of supporting plates, respectively installed on both sides of said chair base, wherein said supporting plates are used for respectively engaging with said first supporting members and said second supporting members.    
   
   
       2 . The structure connection of  claim 1 , wherein each of said supporting plates comprises: 
 a first supporting plate component, wherein said first supporting plate component has at least one first locking hole for being fixed to said chair base; and    a second supporting plate component, wherein said second supporting plate component is connected to said first supporting plate component, and there is an angle between a first side of said second supporting plate component and said first supporting plate component, and said angle is greater than 0 degrees and smaller than 180 degrees, said second supporting plate component has: 
 a first concaved portion, wherein said first concaved portion is located on one end opposite to a connection side between said first supporting plate component and said second supporting plate component, and said first concaved portion is used for supporting said first supporting member; and  
 a second concaved portion, located on the position of a second side near said connection side, wherein said second side is opposite to said first side, and said second supporting member can be engaged with said second concaved portion so as to sustain each of said supporting plates.  
   
   
   
       3 . The structure connection of  claim 2 , wherein said second supporting plate component further has a second locking hole for being fixed to said chairback by using a fixing element.  
   
   
       4 . The structure connection of  claim 1 , wherein said first supporting members and said second supporting members are screws.  
   
   
       5 . The structure connection of  claim 1 , wherein the material forming said supporting plates is iron.  
   
   
       6 . The structure connection of  claim 1 , wherein said chair base has a foot-raising mechanism.  
   
   
       7 . A structure connection of motion chair, wherein said structure connection is used for connecting a chairback to a chair base, and said structure connection comprises: 
 a pair of first supporting members, respectively installed on both sides of said chairback, wherein said first supporting members are located on the positions near said chair base;    a pair of second supporting members, respectively installed on both sides of said chairback, wherein said second supporting members are respectively located below said first supporting members; and    a pair of supporting plates, respectively installed on both sides of said chair base, wherein said supporting plates are used for respectively engaging with said first supporting members and said second supporting members, each of said supporting plates comprising: 
 a first supporting plate component, wherein said first supporting plate component has at least one first locking hole for being fixed to said chair base; and  
 a second supporting plate component, wherein said second supporting plate component is connected to said first supporting plate component, and there is an angle between a first side of said second supporting plate component and said first supporting plate component, and said angle is greater than 0 degrees and smaller than 180 degrees, said second supporting plate component has: 
 a first concaved portion, wherein said first concaved portion is located on one end opposite to a connection side between said first supporting plate component and said second supporting plate component, and said first concaved portion is used for supporting said first supporting member;  
 a second concaved portion, located on the position of a second side near said connection side, wherein said second side is opposite to said first side, and said second supporting member can be engaged with said second concaved portion so as to sustain each of said supporting plates; and  
 a second locking hole for being fixed to said chairback by using a fixing element.  
 
   
   
   
       8 . The structure connection of  claim 7 , wherein said first supporting members and said second supporting members are screws.  
   
   
       9 . The structure connection of  claim 7 , wherein the material forming said supporting plates is iron.  
   
   
       10 . The structure connection of  claim 7 , wherein said chair base has a foot-raising mechanism.