Weight regulator for a chair

Abstract

A method of regulating the weight of a chair comprising a base frame ( 2 ) to support a seat face as well as a spring system ( 3 ) having adjustment means ( 20, 21 ), wherein the resilience of the chair is adjusted by unloaded adjustment means, and the adjustment is performed by moving one or more of the adjustment means ( 20, 21 ) at a time along a portion of the circumference of the base frame ( 2 ), and wherein the adjustment means adjusted first performs a coarse adjustment, following which a fine adjustment is performed with a second adjustment means. The invention also relates to a weight regulator for a chair, said chair comprising adjustment means for individual adjustment of the resilience of the seat and/or the backrest of the chair in dependence on the user's weight, said weight regulator comprising primary adjustment means for a coarse adjustment and secondary adjustment means for a fine adjustment of the resilience of the seat or of the backrest by tilting/movement, said adjustment means ( 20, 21 ) operating between a lower bearing point ( 19 ) and a base frame ( 2 ), said adjustment means ( 20, 21 ) being unloaded at the moment of adjustment.

1 . A method of regulating the weight of a chair comprising a base frame to support a seat face as well as a spring system having adjustment means, characterized in that the resilience of the chair is adjusted by unloaded adjustment means, and that the adjustment is performed by moving one or more of the adjustment means at a time along a portion of the circumference of the base frame.  
   
   
       2 . A method according to  claim 1 , characterized in that the adjustment means adjusted first performs a coarse adjustment, following which a fine adjustment is performed with a second adjustment means.  
   
   
       3 . A weight regulator for a chair, said chair comprising adjustment means for individual adjustment of the resilience of a backrest of the chair in dependence on the user's weight, characterized in that the weight regulator comprises primary adjustment means for a coarse adjustment and second adjustment means for a fine adjustment of the resilience of the backrest by tilting/movement, said adjustment means operating between a lower bearing point and a base frame, and that the adjustment means are unloaded at the moment of adjustment.  
   
   
       4 . A weight regulator according to  claim 3 , characterized in that the adjustment means are formed by spring elements which are rotatably secured at one end at a bearing point and is provided with an end part at the other end, said end part enclosing a portion of an essentially ring-shaped base frame.  
   
   
       5 . A weight regulator according to  claim 3 , characterized in that the base frame is arranged tiltably around an essentially horizontal axis extending through a bracket such that the base frame is capable of tilting around the part of the base frame which faces forwards in the sitting direction of the chair.  
   
   
       6 . A weight regulator according to  claim 4 , characterized in that the end part of the adjustment means comprises holding means for holding the end part in a given position relative to the base frame.  
   
   
       7 . A weight regulator according to  claim 6 , characterized in that the end part of the adjustment means accommodates a form of slide bushing which, when affected by the user, may be brought to a released state such that the slide bushing may be moved freely along the curve of the base frame, and to a secured state when there is no action from the user such that the friction increases sufficiently to hold the end part in a given position relative to the base frame.  
   
   
       8 . A weight regulator according to  claim 7 , characterized in that blocking means are arranged at the end part of the adjustment means, said blocking means being intended to engage corresponding depressions and/or elevations in the base frame for holding the end part in a given position relative to the base frame.  
   
   
       9 . A weight regulator according to  claim 5 , characterized in that the bracket is provided with one or more pairs of recesses in which the base frame may be displaced for adjusting the depth of the seat face.  
   
   
       10 . A weight regulator according to  claim 3 , characterized in that at the part facing rearwards in the sitting direction, the base frame is provided with one or more holes for the application of a backrest.