Chair

Abstract

A chair comprising two ribbed supporting sectional elements ( 12 ) set at a distance from one another in a transverse direction and connected to a base ( 22, 24 ) by means of a transverse supporting element ( 20 ), wherein each of said ribbed supporting sectional elements ( 12 ) is basically L-shaped, with a seat portion ( 12 a ), a backrest portion ( 12 b ), and a rounded radiusing portion ( 12 c ) between the seat portion ( 12 a ) and the backrest portion ( 12 b ), wherein extending between said supporting sectional elements ( 12 ) is a material basically in the form of a sheet ( 42, 62 ), which forms a seat ( 42 a, 62 a ) and a backrest ( 42 b, 62 b ), and wherein each of said ribbed supporting sectional elements ( 12 ) is provided with a plurality of through notches ( 48 ) set at a distance from one another in a longitudinal direction, which form respective points of localized bending, which enable bending of the supporting sectional element ( 12 ) in a vertical plane, said notches ( 48 ) distanced from one another by respective stretches ( 50 ) substantially rigid to bending in said vertical plane.

1 . A chair comprising:
 a base,   two ribbed supporting sectional elements set at a distance from one another in a transverse direction, wherein each of said ribbed supporting sectional elements is basically L-shaped, with a seat portion, a backrest portion, and a rounded radiusing portion between the seat portion and the backrest portion,   a supporting element connecting said ribbed supporting sectional elements to said base,   a sheet extending between said supporting sectional elements forming a seat and a backrest,   wherein, each of said ribbed supporting sectional elements is provided with a plurality of through notches, which are set at a distance from one another in a longitudinal direction and form respective points of localized bending that enable bending of the supporting sectional element in a vertical plane, said notches being distanced from one another by respective stretches substantially rigid to bending in said vertical plane.   
   
   
       2 . The chair according to  claim 1 , wherein each of said notches has two opposite surfaces that come into contact upon one another to limit the amplitude of the local bending of the sectional element. 
   
   
       3 . The chair according to  claim 1 , wherein said notches are formed in an integral ribbing that extends in a median vertical plane of the respective supporting sectional element. 
   
   
       4 . The chair according to  claim 3 , wherein said notches are distributed along said seat portions, said backrest portions and said radiusing portions of said supporting sectional elements. 
   
   
       5 . The chair according to  claim 3 , wherein said ribbing has a thickness comprised between 2-20 mm and a height comprised between 10-60 mm. 
   
   
       6 . The chair according to  claim 2 , wherein each of said notches enables a localized bending of the sectional element with a maximum amplitude comprised between 1°-22°. 
   
   
       7 . The chair according to  claim 1 , wherein said sheet consists of a fabric or by a mesh with side edges anchored in respective external grooves of said supporting sectional elements. 
   
   
       8 . The chair according to  claim 1 , wherein said sheet consists of injected plastic material integral with said supporting sectional elements. 
   
   
       9 . The chair according to  claim 1 , wherein said supporting sectional elements are joined together by integral transverse elements formed integrally with said supporting sectional elements. 
   
   
       10 . The chair according to  claim 1 , wherein each of said supporting sectional elements comprises at least one elastic member formed by a bar of elastic metal material inserted in a seat of the supporting sectional element. 
   
   
       11 . The chair according to  claim 2 , wherein said supporting sectional elements with said integral ribbing are made of injection-moulded plastic material. 
   
   
       12 . A chair comprising:
 a base,   two ribbed supporting sectional elements made of injection-moulded plastic material set at a distance from one another in a transverse direction, wherein each of said ribbed supporting sectional elements is basically L-shaped, with a seat portion, a backrest portion, and a rounded radiusing portion between the seat portion and the backrest portion, wherein each of said ribbed supporting sectional elements is provided with an integral ribbing that extends in a median vertical plane of the respective supporting sectional element, the integral ribbing having a plurality of through notches set at a distance from one another in a longitudinal direction and forming respective points of localized bending, each of said ribbed supporting sectional elements having a respective laterally open external groove,   a supporting element connecting said ribbed supporting sectional elements to said base,   a sheet of flexible material having two side edges anchored in respective external grooves of said supporting sectional elements, said sheet extending between said supporting sectional elements and forming a seat and a backrest, and   first and second bar-shaped flexible transverse elements integrally formed with said supporting sectional elements, said bar-shaped flexible transverse elements connecting to each other said supporting sectional elements at a forward end of the respective seat portions and at an upper end of the respective backrest portions.   
   
   
       13 . The chair according to  claim 12 , wherein said notches are distributed along said seat portions, said backrest portions and said radiusing portions of said supporting sectional elements. 
   
   
       14 . The chair according to  claim 12 , wherein each of said supporting sectional elements comprises at least one elastic member formed by a bar of elastic metal material inserted in a seat of the supporting sectional element.