Ergonomic chair-armchair structure, particularly for office, of the type equipped with adjustable kidneyrest and headrest

Abstract

Ergonomic chair-armchair structure, particularly for office, of the type with an adjustable kidneyrest and headrest, including a base with related support vertical column of a seat and a back, the latter of the type obtained by a tensioned sheet between the two sides of the chair-armchair, in which a support element of the headrest and of the kidneyrest, extended according to the profile of the back is closed to the back side of the latter, being, on one side, downwardly fixed to the seat, and on the other to a connecting cross element between the sides of the armchair; and furthermore in which said kidneyrest and headrest are adjustable along the said support element, providing selective locking means.

I claim:  
     
         1 . Ergonomic chair-armchair structure, particularly for office, characterized in that it provides a support element ( 6 ) of at least one kidneyrest ( 8 ), under lee of the back side of the back ( 4 ), being, on one side, fixed to the seat ( 3 - 411 ), from the other to a connecting cross element ( 7 ) between the sides ( 41 ) of the armchair (A).  
     
     
         2 . Ergonomic chair-armchair structure, particularly for office, according to claim  1 ., characterised in that said kidneyrest ( 8 ) is adjustable along the said support element ( 6 ), providing selective locking means ( 9 ,  91 ).  
     
     
         3 . Ergonomic chair-armchair structure, particularly for office, including a base ( 1 ), a support ( 12 ) of a seat ( 3 ) and a back ( 4 ), the latter of the type obtained with a sheet ( 5 ) tensioned between the two sides ( 41 ) of the chair-armchair, according to claims  1 ., and  2 ., characterized in that it provides a support element ( 6 ) of the kidneyrest ( 8 ) and of the headrest ( 10 ), under lee of the back side of the back ( 4 ), being, on one side, downwardly fixed to the seat ( 3411 ), from the other to a connecting cross element ( 7 ) between the sides ( 41 ) of the armchair; and furthermore in which said kidneyrest ( 8 ) and headrest ( 10 ) are adjustable along the said support element ( 6 ), providing selective locking means ( 9 ,  91 ).  
     
     
         4 . Ergonomic chair-armchair structure, particularly for office, according to previous claims, characterised in that the support rod ( 6 ), is made up with a metallic plate, shaped according to the profile of the same back ( 4 ), of which the lower end ( 61 ) bent for insert below the seat ( 3 ) and be anchored to the same, while the opposed side ( 62 ), upwards directed that exceeds with the section ( 621 ) the height of the back ( 4 ), is set and so engaged, in intermediate position, to a cross-piece ( 7 ), that joins the sides ( 41 ) of the chair (A).  
     
     
         5 . Ergonomic chair-armchair structure, particularly for office, according to previous claims, characterised in that the support rod ( 6 ), in the underside, included between the cross-piece ( 7 ) and the seat ( 3 ) provides an adjustable kidneyrest ( 8 ).  
     
     
         6 . Ergonomic chair-armchair structure, particularly for office, according to previous claims, characterised in that the upper part ( 62 ) of the rod ( 6 ), for the section ( 621 ) that exceeds the height of the back ( 4 ), provides an adjustable overhanging headrest ( 10 ); said rod ( 6 ) disposing the section ( 621 ) close to the axis of the back ( 4 ).  
     
     
         7 . Ergonomic chair-armchair structure, particularly for office, according to previous claims, characterised in that both the kidneyrest ( 8 ), that the headrest ( 10 ) are made up of an element of support ( 81 ,  101 ), padded ( 82 ,  102 ) facing the back of the sheet ( 5 ), from the other, providing a seat ( 83 ,  103 ) through which is passing-through the support rod ( 6 ).  
     
     
         8 . Ergonomic chair-armchair structure, particularly for office, according to previous claims, characterised in that the selective locking means of the position of the kidneyrest ( 8 ) and of the headrest ( 10 ), along the rod ( 6 ), are made up by a screw ( 9 ), that by means of a knurl ( 91 ), perpendicularly regards the seat ( 83 ,  103 ), insisting on the rod ( 6 ) in connection with references ( 611 ).  
     
     
         9 . Ergonomic chair-armchair structure, particularly for office, according to previous claims, characterised in that the position of the stuffing ( 82 ,  102 ) respectively of the kidneyrest ( 8 ) and of the headrest ( 10 ), is almost close-fitting to the sheet ( 5 ), without to deform the profile of the same, or at the most lightly deviated.  
     
     
         10 . Ergonomic chair-armchair structure, particularly for office, according to previous claims, characterised in that along the said support element ( 6 ), is provided, in fixed position, an overhanging clothes-hanger ( 63 ), made up of a lightly arched portion, connected to the rod ( 6 ) by a back easement ( 631 ).