Chair Leg

Abstract

This invention provides a chair leg including a connecting column, a sliding base, and a swinging block; the swinging block includes a positioned swinging block, a ring spring, and a fixed block; the sliding base includes a sliding leg and a connecting block; and the connecting column is fixed to the sliding base via the swinging block. This chair leg is provided with a simple structure, easy production, lower manufacturing cost, and is capable of swinging in a certain angle of 360 degrees and giving users more comfortable seat experience.

What is claimed is: 
     
         1 . A chair leg comprising:
 a connecting column ( 1 ), wherein the connecting column ( 1 ) is fixed to a sliding base ( 2 ) via a swinging block; the connecting column ( 1 ) is a circular column divided into an upper portion and a lower portion, the upper portion ( 11 ) gradually becomes thicker from top to bottom, a small adjustable connecting column ( 13 ) is sleeved by the upper portion ( 11 ); the lower portion ( 12 ) gradually becomes thicker from bottom to top, a length of the lower portion ( 12 ) is from 8 cm to 24 cm; the sliding base ( 2 ) includes sliding legs ( 8 ) and a connecting block; the sliding leg ( 8 ) includes two parts, one part is a fixed connecting piece ( 82 ), one end of the fixed connecting piece ( 82 ) is fixed to the connecting block, the other end is circular-arc-shaped and is connected with the other part that is a caster ( 81 ), the caster ( 81 ) is a universal wheel; the swinging block includes a positioned swinging block ( 3 ), a ring spring ( 4 ) and a fixed block ( 5 ); the ring spring ( 4 ) is disposed in the positioned swinging block ( 3 ), the fixed block ( 5 ) is fixed to the connecting block of the sliding base ( 2 ) via bolts passing through the swinging block ( 3 ) and the ring spring ( 4 ); and the connecting column ( 1 ) is fixed to the connecting block of the sliding base ( 2 ) via the swinging block.   
     
     
         2 . The chair leg according to  claim 1 , wherein a gas bar ( 14 ) is disposed in the adjustable connecting column ( 13 ) of the connecting column ( 1 ) and is adjustable up and down for adjusting a height. 
     
     
         3 . The chair leg according to  claim 1 , wherein the connecting block includes a cube ( 6 ) that is hollow in the middle and four triangular pieces ( 7 ) respectively with a hole; the four triangular pieces ( 7 ) with the hole are welded to four interior corners of the hollow cube ( 6 ), respectively, and the sliding leg ( 8 ) is welded to the middle of an outer side of the cube ( 6 ). 
     
     
         4 . The chair leg according to  claim 3 , wherein the swinging block includes an upper part and a lower part, the upper part is the positioned swinging block ( 3 ) with a hollow cylinder, the hollow cylinder cooperates with a size of the connecting column ( 1 ), the ring spring ( 4 ) is disposed in the positioned swinging block ( 3 ), the lower part is the fixed block ( 5 ) that is square and hollow, and the hollow portion is circular. 
     
     
         5 . The chair leg according to  claim 1 , wherein the ring spring ( 4 ) is a spring with a high-stiffness coefficient that is ring-shaped. 
     
     
         6 . The chair leg according to  claim 4 , wherein the ring spring ( 4 ) is a spring with a high-stiffness coefficient that is ring-shaped. 
     
     
         7 . The chair leg according to  claim 4 , wherein a cavity in the middle of the positioned swinging block ( 3 ) becomes smaller from top to bottom. 
     
     
         8 . The chair leg according to  claim 4 , wherein a diameter of the hollow circle at the fixed block ( 5 ) is smaller than a diameter of a circle formed at the bottom of the positioned swinging block ( 3 ).