Folding chair

Abstract

A folding chair includes a seat base, a seat back, two front legs and two rear legs. The upper portions of the two rear legs are respectively connected to the rear portions of the left and right side edges of the seat base, wherein the upper portions of the two front legs are respectively connected to the central portions of the left and right side edges of the seat base, the upper ends of the rear legs are rotatably pivot jointed to the upper ends of the front legs. A U-shaped pipe is disposed at the two sides of the seat back comprising a U-shaped section and two fixation sections to connect to the two front legs, two fixation sections are respectively extended inclinedly and outwardly from the two ends at the opening of the U-shaped section, the U-shaped section and the front legs are not on a line.

1 . A folding chair, comprising a seat base, a seat back, two front legs and two rear legs, the upper portions of the two rear legs are respectively connected to the rear portions of the left and right side edges of the seat base, wherein the upper portions of the two front legs are respectively connected to the central portions of the left and right side edges of the seat base, the upper ends of the rear legs are rotatably pivot joint to the upper ends of the front legs, two sides of the seat back are respectively configured to be fixation section pipe, the fixation section pipes are respectively connected to the two front legs, the fixation section pipe and the corresponding front leg are not on a line, the connection point therebetween is a flex point. 
     
     
         2 . The folding chair according to  claim 1 , wherein the pipe disposed at the two sides of the seat back is a U-shaped pipe comprising a U-shaped section to fix the seat back and two fixation sections to connect to the two front legs, two fixation sections are respectively extended inclinedly and outwardly from the two ends at the opening of the U-shaped section, the U-shaped section and the front legs are not on a line, the U-shaped section is migrated towards the rear legs. 
     
     
         3 . The folding chair according to  claim 2 , wherein the distance between the fixation section and the seat base is smaller than the distance between the fixation section and the seat back. 
     
     
         4 . The folding chair according to  claim 2 , wherein fixation section comprises a first connection rod and a second connection rod, the first connection rod is fixedly connected to the front leg, the second connection rod is connected to the U-shaped section, the angle between the first connection rod and the second connection rod is an obtuse angle, the angle between the second connection rod and the U-shaped pipe is an obtuse angle. 
     
     
         5 . The folding chair according to  claim 4 , wherein the diameters of the front leg, the first connection rod, the second connection rod and the U-shaped section decreases in order. 
     
     
         6 . The folding chair according to  claim 4 , wherein a side of the upper end of the front leg is disposed with a pivot ear, the upper end of the rear leg is pivot joint to the pivot ear, the first connection rod is inserted into the front leg. 
     
     
         7 . The folding chair according to  claim 4 , wherein a side of the upper end of the front leg is disposed with a pivot ear, the upper end of the rear leg is pivot joint to the pivot ear, the first connection rod abuts against the pivot ear. 
     
     
         8 . The folding chair according to  claim 6 , wherein further comprising sleeve connectors, the sleeve connectors are sleeved on the connection portion of the front legs and the fixation sections. 
     
     
         9 . The folding chair according to  claim 7 , wherein further comprising sleeve connectors, the sleeve connectors are sleeved on the connection portion of the front legs and the fixation section. 
     
     
         10 . The folding chair according to  claim 3 , wherein fixation Section comprises a first connection rod and a second connection rod, the first connection rod is fixedly connected to the front leg, the second connection rod is connected to the U-shaped section, the angle between the first connection rod and the second connection rod is an obtuse angle, the angle between the second connection rod and the U-shaped pipe is an obtuse angle. 
     
     
         11 . The folding chair according to  claim 10 , wherein the diameters of the front leg, the first connection rod, the second connection rod and the U-shaped section decreases in order. 
     
     
         12 . The folding chair according to  claim 10 , wherein a side of the upper end of the front leg is disposed with a pivot ear, the upper end of the rear leg is pivot joint to the pivot ear, the first connection rod is inserted into the front leg. 
     
     
         13 . The folding chair according to  claim 10 , wherein a side of the upper end of the front leg is disposed with a pivot ear, the upper end of the rear leg is pivot joint to the pivot ear, the first connection rod abuts against the pivot ear. 
     
     
         14 . The folding chair according to  claim 12 , wherein further comprising sleeve connectors, the sleeve connectors are sleeved on the connection portion of the front legs and the fixation sections. 
     
     
         15 . The folding chair according to  claim 13 , wherein further comprising sleeve connectors, the sleeve connectors are sleeved on the connection portion of the front legs and the fixation section.