Folding chair frame and folding chair thereof

Abstract

A folding chair frame and a folding chair thereof are disclosed. The folding chair frame includes a support base and multiple connection components, an outer side surface of the support base is provided with multiple installation grooves distributed along a circumferential direction thereof in a one-to-one correspondence with the connection components. The installation groove is provided with a limiting part, the first connection base is provided with a first fitting part, the second connection base is provided with a second fitting part. When the connection component is unfolded, the first fitting part abuts against the limiting part to limit upward rotation of the first connection base relative to the support base, and the second fitting part abuts against the limiting part to limit upward rotation of the second connection base relative to the support base. The present invention has advantages of a simple and ingenious structure and easy operations.

1 . A folding chair frame, comprising a support base and a plurality of connection components, wherein an outer side surface of the support base is provided with a plurality of installation grooves distributed along a circumferential direction thereof in a one-to-one correspondence with the connection components; each connection component comprises a first connection base connected to a support rod and a second connection base connected to a foot rod, the first connection base and the second connection base are respectively rotatably connected to corresponding installation grooves, so that the connection component can be folded or unfolded, and when each connection component is unfolded, each support rod tilts upward and each foot rod tilts downward, wherein
 the installation groove is provided with a limiting part, the first connection base is provided with a first fitting part, the second connection base is provided with a second fitting part, and when the connection component is unfolded, the first fitting part abuts against the limiting part to limit upward rotation of the first connection base relative to the support base, and the second fitting part abuts against the limiting part to limit upward rotation of the second connection base relative to the support base.   
     
     
         2 . The folding chair according to  claim 1 , wherein the installation groove comprises two installation boards arranged opposite each other on a left side and a right side, the first connection base and the second connection base are hinged between the two installation boards, and the limiting part is disposed between tops of the two installation boards. 
     
     
         3 . The folding chair according to  claim 1 , wherein the first connection base comprises a first installation part and a first connection part fixed on the first installation part and connected to the support rod, the second connection base comprises a second installation part and a second connection part fixed on the second installation part and connected to the foot rod, and the first installation part and the second installation part are respectively rotatably connected to the installation groove; and the first fitting part is a limiting surface located on a side surface of the first connection part and close to the first installation part, and the second fitting part is a limiting tooth protruding from the second installation part. 
     
     
         4 . The folding chair according to  claim 3 , wherein a rotation axis of the first connection base coincides with a rotation axis of the second connection base, and an angle limiting structure is matched between the first connection base and the second connection base, to enable the first connection base and the second connection base to be relatively fixed. 
     
     
         5 . The folding chair according to  claim 4 , wherein the angle limiting structure comprises a limiting groove and a limiting column, the limiting groove is disposed in one of the first installation part and the second installation part, and the limiting column is disposed in the other of the first installation part and the second installation part; and the limiting groove is in the shape of a long strip arc and is disposed around the rotation axis, the limiting column is adapted to slide in the limiting groove, and when the second connection base is unfolded, the limiting column is clamped at one end of the limiting groove, so that the second connection base moves in an unfolding direction following the first connection base. 
     
     
         6 . The folding chair according to  claim 3 , wherein a rotation axis of the first installation part coincides with a rotation axis of the second installation part; and the first connection part is provided with an allowance groove, and when the connection component is unfolded, the limiting tooth is clamped in the allowance groove; or when the connection component is folded, the support rods connected to the first connection part and the foot rods connected to the second connection part are stacked together. 
     
     
         7 . The folding chair according to  claim 1 , wherein in a plurality of connection components, support rods of some connection components are base rods, support rods of remaining connection components are back rods, the back rods are located behind the base rods, and a length of the back rod is greater than a length of the base rod. 
     
     
         8 . The folding chair according to  claim 1 , wherein the support rods and/or foot rods are tubular, and free ends of the foot rods are provided with foot sleeves;
 and there are four connection components, and the four connection components are arranged in pairs.   
     
     
         9 . The folding chair according to  claim 1 , wherein the support rods are telescopic rods with a self-locking function, which can be extended or shortened. 
     
     
         10 . A folding chair, comprising a flexible base surface, wherein the folding chair further comprises the folding chair frame according to  claim 1 , and one end, of the support rod, away from the first connection base of each connection component  1 , is connected to the flexible base surface, so that the first connection base for restrictively connecting the flexible base surface to the support rod is rotated downward relative to the support base when the folding chair frame is in the unfolded state.