Chair with means for controlling a cursor

Abstract

The invention relates to a chair comprising at least a chassis; and a seat, as well as means suitable for converting chair movements into control signals for controlling a cursor (pointer) on a display screen. In order to prevent RSI complaints, the invention aims at providing an improved chair, which is characterized in that the seat comprises a convex part, which part can be movably accommodated in a corresponding part of the chassis having a complementary concave shape, and in that the means for controlling the cursor are at least in part disposed at the location of the mating area between said convex and concave parts.

1 . A chair comprising at least a chassis; and a seat, and a controller for converting chair movements into control signals for controlling a cursor on a display screen, wherein the seat comprises a convex part that can be movably accommodated in a corresponding part of the chassis having a complementary concave shape, and the controller is at least in part disposed proximate a mating area between the convex and concave parts.  
   
   
       2 . A chair according to  claim 1 , wherein the seat can move in at least two orthogonal directions relative to the chassis.  
   
   
       3 . A chair according to  claim 1 , wherein the seat comprises an upright ring formed on the convex part of the seat, which ring limits movement of the seat relative to the chassis to an angular range.  
   
   
       4 . A chair according to  claim 3 , wherein the seat can move through an angle of 10°-20° relative to the chassis.  
   
   
       5 . A chair according to  claim 1 , comprising ball bearings for supporting the convex part of the seat can be supported on the convex part of the chassis.  
   
   
       6 . A chair according to  claim 5 , wherein the ball bearings form part of the controller.  
   
   
       7 . A chair according to  claim 1 , wherein the controller is at least partially mounted in the seat.  
   
   
       8 . A chair according to  claim 1 , wherein the controller includes at least one of a balance switch or tumbler switch.  
   
   
       9 . A chair according to  claim 1 , wherein the controller controls the cursor on the display screen in a contactless manner.  
   
   
       10 . A chair according to  claim 9 , wherein the controller includes an optical controller for controlling the cursor.  
   
   
       11 . A chair according to  claim 9 , wherein the controller includes an electromagnetic controller for controlling the cursor.  
   
   
       12 . A chair according to  claim 1 , comprising at least one armrest provided with means for locking the seat relative to the chassis.  
   
   
       13 . A chair according to  claim 12 , wherein the locking means includes snap hinges.  
   
   
       14 . A chair according to  claim 1 , wherein the convex part of the seat forms part of a fictitious sphere having a center arranged to be located between the shoulder blades of a person seated on the chair.  
   
   
       15 . A chair according to  claim 14 , wherein a radius R of the fictitious sphere ranges from 40-120 cm.  
   
   
       16 . A chair according to  claim 2 , wherein the seat comprises an upright ring formed on the convex part of the seat, which ring limits movement of the seat relative to the chassis to an angular range.  
   
   
       17 . A chair according to  claim 2 , wherein the controller is at least partially mounted in the seat.  
   
   
       18 . A chair according to  claim 17 , wherein the controller includes at least one of a balance switch or tumbler switch.  
   
   
       19 . A chair according to  claim 7 , wherein the controller includes at least one of a balance switch or tumbler switch.  
   
   
       20 . A chair according to  claim 2 , wherein the controller controls the cursor on the display screen in a contactless manner.