Chair

Abstract

A chair configured such that a backrest support rod does not make contact with an object when the chair is swiveled and is thus reliably prevented from damaging the object or from being damaged by the object and that the chair uses a reduced number of parts, has a simple structure, and can be easily assembled. A chair, wherein front portions of front facing sections ( 9 b ) of a backrest support rod ( 9 ) are mounted to a support base ( 5 ) supported by a leg body ( 3 ) and supporting a seat ( 7 ). The backrest support rod ( 9 ) is formed in an L-shape in a side view and comprises upwardly facing raised sections ( 9 a ) and the forwardly facing front facing sections ( 9 b ). The upwardly facing raised sections ( 9 a ) and the forwardly facing front facing sections ( 9 b ) are connected together through a curved section ( 9 c ), and the raised sections ( 9 a ) support a backrest ( 6 ). A protective cover ( 11 ) covers at least that portion of the backrest support rod ( 9 ) which extends from the rear surface of the curved section ( 9 c ) to the lower surface thereof.

1 . A chair comprising:
 a leg;   a support base supported by the leg;   a seat supported by the support base;   an L-like backrest support rod comprising a vertical portion, a forward portion and a curved portion between the vertical portion and the forward portion, a front part of the forward portion being mounted to the support base;   a backrest supported by the vertical portion of the backrest support rod; and   a protective cover covering at least a part from a rear surface to a lower surface of the curved portion of the backrest support rod.   
     
     
         2 . The chair of claim h wherein the protective cover is made of cushioning material. 
     
     
         3 . The chair of  claim 1 , wherein the protective cover is made of soft synthetic resin or rubber. 
     
     
         4 . The chair of  claim 1 , wherein the vertical portion comprises a pair of vertical rods divided from the curved portion and extending upward, the forward portion comprising a pair of forward rods divided from the curved portion forward, the protective cover comprising a curved covering portion, a vertical covering portion and a forward covering portion, the curved covering portion of the protective cover covering the rear surface of the curved portion, the vertical covering portion formed with the curved covering portion to cover a rear surface of each of the pair of vertical rods, the forward covering portion being integrated with the curved covering portion to cover a lower surface of each of the pair of forward rods. 
     
     
         5 . The chair of  claim 4 , wherein the backrest support rod has an “X” shaped crossed part formed by the vertical portions and the forward portions, a center of the “X” shaped crossed part being covered with the curved covering portion which is wider than each of the pair of vertical rods and/or each of the pair of forward rods and which projects rearward hemispherically. 
     
     
         6 . The chair of  claim 4 , wherein a groove for mounting the backrest is formed in the rear surface of the vertical rod of the backrest support rod, an elastic projection in a front surface of an upper end of each of the vertical covering portions of the protective cover pressingly fitting in the groove. 
     
     
         7 . The chair of  claim 1 , wherein a gap is formed between a rear surface of the backrest support rod and a front surface of the protective cover, at least part of the protective cover corresponding to the gap being made of elastic material. 
     
     
         8 . The chair of  claim 1 , wherein the backrest comprises a backrest frame which comprises an opening in a middle and a frame member in which stretched material is stretched to cover the opening, the backrest frame having a pair of protrusions in a middle of its height, the pair of protrusions projecting each other. 
     
     
         9 . The chair of  claim 8 , wherein the pair of protrusions projects backward. 
     
     
         10 . The chair of  claim 8 , wherein a rear surface of the pair of protrusions is mounted to an upper part of the backrest support rod. 
     
     
         11 . The chair of  claim 10 , wherein the upper part of the backrest support rod is pivotally mounted to the protrusion via a transverse pivot shaft to turn in all directions within a limited range. 
     
     
         12 . The chair of  claim 11 , wherein cushioning material made of soft elastic material is held between the protrusion and the backrest support rod.