Arrangement for bearing for a seat

Abstract

The mounting for a seat ( 3 ) is suitable, in particular, for a chair, but also for stools, individual seats ( 3 ) on a bench or fixed seats ( 3 ). The mounting makes it possible for the seat ( 3 ) to swing resiliently in all directions or in defined directions, in accordance with changes in the user's posture. The seat ( 3 ) rests on an underframe on which a spring element ( 4 ) is arranged, said spring element being restrained in a casing ( 5,6 ) and being capable of moving elastically, in a horizontal plane, therein. The casing ( 5,6 ) is connected to the seat ( 3 ) or forms a part thereof. The spring element ( 4 ) is preferably arranged at the top of an axially extensible push rod of a pneumatic spring ( 2 ). The outer sleeve ( 43 ) of the spring element ( 4 ) is a rubber body, while the axial through-passage ( 45 ) of the spring element ( 4 ) has a preferably metallic core ( 44 ) around it. The specific advantages of the mounting result in improved seating comfort.

1 . A mounting for a seat ( 3 ) which rests on an underframe ( 1 ), having a spring element ( 4 ) arranged on the underframe ( 1 ), wherein 
 a) the spring element ( 4 ) is positioned in a casing ( 5 , 5 ′; 6 , 6 ′; 600 ; 600 ′) and allows the latter to move elastically in the horizontal plane; and    b) the casing ( 5 , 5 ′; 6 , 6 ′; 600 , 600 ′) is connected to the seat ( 3 ) or forms a part thereof.    
     
     
         2 . The mounting as claimed in  claim 1 , wherein the spring element ( 4 ) is arranged at the top of an axial column ( 2 ) of the underframe ( 1 ).  
     
     
         3 . The mounting as claimed in  claim 1  or  2 , wherein the spring element ( 4 ) is arranged on an extensible, axially acting spring ( 2 ).  
     
     
         4 . The mounting as claimed in one of  claims 1  to  3 , wherein the spring element ( 4 ) is arranged at the top of an axially extensible push rod of a pneumatic spring ( 2 ).  
     
     
         5 . The mounting as claimed in one of  claims 1  to  4 , wherein the spring element ( 4 ) has an elastic outer sleeve ( 43 ), e.g. a rubber body.  
     
     
         6 . The mounting as claimed in one of  claims 1  to  5 , wherein 
 a) the casing ( 5 , 5 ′; 6 , 6 ′) has a bottom, cup-like part ( 5 , 5 ′) in which the spring element ( 4 ) is seated; and  
 b) the spring element ( 4 ) and the casing ( 5 , 5 ′; 6 , 6 ′) have an axial through-passage ( 45 ; 61 , 61 ′).  
 
     
     
         7 . The mounting as claimed in one of  claims 1  to  5 , wherein 
 a) the casing ( 600 , 600 ′), in which the spring element ( 4 ) is seated, is a cup-like part ( 600 , 600 ′) which encases the spring element ( 4 ) from above; and  
 b) the spring element ( 4 ) and the casing ( 600 , 600 ′) have an axial through-passage ( 45 , 61 ″).  
 
     
     
         8 . The mounting as claimed in one of  claims 1  to  7 , wherein 
 a) the spring element ( 4 ) comprises an inner, preferably metallic core ( 44 ) and the elastic outer sleeve ( 43 ), which is arranged thereon; and  
 b) the core ( 44 ) has an opening ( 45 ), preferably an axial through-passage ( 45 ), for accommodating the column ( 2 ).  
 
     
     
         9 . The mounting as claimed in one of  claims 1  to  8 , wherein the radial, outer circumference of the outer sleeve ( 43 ) of the spring element ( 4 ) 
 a) is cylindrical; or  
 b) tapers conically in the upward direction; or  
 c) is essentially of cylindrical shape with a top and bottom reduction in diameter.  
 
     
     
         10 . The mounting as claimed in one of  claims 1  to  6 ,  8  or  9 , wherein 
 a) the spring element ( 4 ) is restrained at the top by a top molding ( 6 , 6 ′);  
 b) the top molding ( 6 , 6 ′) is connected to the casing ( 5 , 5 ′); and  
 c) the seat ( 3 ) is fastened on the top molding ( 6 ).  
 
     
     
         11 . The mounting as claimed in one of  claims 1  to  10 , wherein the core ( 44 ) is fixed to the outer sleeve ( 43 ).  
     
     
         12 . The mounting as claimed in one of  claims 1  to  5 ,  7  to  9  or  11 , wherein 
 a) the casing ( 600 , 600 ′), which is positioned on the spring element ( 4 ) from above, is fixed to the outer sleeve ( 43 ); and  
 b) the casing ( 600 , 600 ′) may have a flange ( 601 ′) for connection to the seat.  
 
     
     
         13 . The mounting as claimed in one of  claims 1  to  12 , wherein 
 a) provided in the top molding ( 6 , 6 ′) or in the casing ( 600 , 600 ′), which is positioned on the spring element ( 4 ) from above, coaxially with the pneumatic-spring-forming central column ( 2 ), is a through-opening ( 61 , 61 ′, 61 ″) for the purpose of actuating the triggering push rod ( 23 ) of the pneumatic spring; and  
 b) the axial through-passage ( 45 ) narrows conically.  
 
     
     
         14 . The mounting as claimed in one of  claims 1  to  13 , wherein 
 a) the through-opening ( 61 , 61 ′, 61 ″) in the top molding ( 6 , 6 ′) or in the casing ( 600 , 600 ′), which is positioned on the spring element ( 4 ) from above, has a defined geometry, e.g. a slot; and  
 b) the internal core ( 44 ) of the spring element ( 4 ) has an extension ( 440 ) which projects into the through-opening ( 61 , 61 ′, 61 ″) and is guided therein, as a result of which the moveability of the seat ( 3 , 3 ′) is limited.