Sitting support and method for ergonomically supporting a sitting person

Abstract

The invention relates to a sitting support, comprising a base and at least one upper part moveable relative to the base, wherein, by the or each upper part, a sitting surface is determined on which, during use, at least one ischium of a user rests, wherein, for said base and said at least one upper part, drive means are provided for reciprocally driving the respective upper part relative to the base part.

1 . A sitting support, comprising a base and at least one upper part movable relative to the base, wherein, on the at least one upper part, a sitting surface is determined on which, during use, at least one ischium of a user rests, wherein, for said base and said at least one upper part, drive means are provided for reciprocally driving the respective upper part relative to the base part.  
   
   
       2 . The sitting support according to  claim 1 , wherein the drive means are provided for rotation of the at least one upper part relative to said base.  
   
   
       3 . The sitting support according to  claim 2 , wherein a rotational axis is provided about which the at least one upper part can rotate relative to the base, wherein, preferably, the drive means are arranged and/or blocking means are provided for limiting the angle through which said at least one upper part can rotate, which angle is preferably limited to less than 20°.  
   
   
       4 . The sitting support according to  claim 1 , wherein at least two upper parts are provided, formed and placed next to one another such that each of the upper parts can support an ischium of a user during use, wherein the drive means are provided for moving the upper parts relative to one another and relative to the base in a reciprocal, particularly substantially translating manner.  
   
   
       5 . The sitting support according to  claim 4 , wherein the two upper parts are located on both sides of an axial line, wherein the drive means are arranged for reciprocally moving the upper parts substantially parallel to said axial line, in directions opposite to each other.  
   
   
       6 . The sitting support according to  claim 4 , wherein the drive means are arranged and/or blocking means are provided for limiting the freedom of movement of the upper parts, such that the upper parts can make a stroke relative to one another that is smaller than 15 cm.  
   
   
       7 . The sitting support according to  claim 1 , wherein the drive means have an electrical design and wherein a battery or accumulator is provided for power supply of the drive means.  
   
   
       8 . The sitting support according to  claim 1 , wherein the base is dish-shaped and is provided with friction-enhancing means on a bottom side, wherein the or each upper part is borne on an opposite top side, substantially by bearing means provided between the base and the or each upper part, all this such that, between the or each upper part and the base or between two parts of the or each upper part, a substantially closed inner space is determined, wherein, between the base and the or each upper part and/or in said inner space, the drive means are provided and wherein, on or near the top side, operating means are provided for operating the drive means.  
   
   
       9 . The sitting support according to  claim 1 , wherein the or each upper part bears a cushion.  
   
   
       10 . The sitting support according to  claim 1 , wherein, in assembled condition, the sitting support has a height that is smaller than 10 cm, has a width smaller than 60 cm, and has a length smaller than 60 cm, all this such that it is placeable and supportable on the seat of a chair, in particular a desk chair, preferably in a case.  
   
   
       11 . An assembly of a chair and a sitting support according to  claim 1 , wherein the sitting support is placed on a seat of the chair, such that a user can sit on the chair on the sitting support.  
   
   
       12 . A method for moving a sitting person, wherein, on the seat of a chair, a sitting support is placed, which sitting support provides a reciprocal pivoting of the pelvis of the user during sitting, which pivoting substantially takes place about an axle including an acute angle with a vertical axis.  
   
   
       13 . The method according to  claim 12 , wherein said pivoting is effected by a rotating surface of the sitting support, wherein the back of the user rests against a back rest of the chair.  
   
   
       14 . The method according to  claim 12 , wherein said pivoting is obtained by two surfaces of the sitting support translating relative to each other.  
   
   
       15 . The sitting support according to  claim 3 , wherein, the rotational angle of the drive means and/or blocking means is limited to less than 10°.  
   
   
       16 . The sitting support according to  claim 3 , wherein, the rotational angle of the drive means and/or blocking means is limited to less than 5°.  
   
   
       17 . The sitting support according to  claim 6 , wherein the drive means are arranged and/or blocking means are provided for limiting the freedom of movement of the upper parts, such that the upper parts can make a stroke relative to one another that is smaller than 10 cm.  
   
   
       18 . The sitting support according to  claim 6 , wherein the drive means are arranged and/or blocking means are provided for limiting the freedom of movement of the upper parts, such that the upper parts can make a stroke relative to one another that is smaller than 5 cm.  
   
   
       19 . The sitting support according to  claim 10 , wherein, in assembled condition, the sitting support has a height that is between 0.5 and 8 cm, has a width smaller than 50 cm, and has a length smaller than 50 cm.  
   
   
       20 . The sitting support according to  claim 10 , wherein, in assembled condition, the sitting support has a width between 20 and 45 cm, and has a length between 20 and 45 cm.  
   
   
       21 . A portable sitting support for providing motorized movement of a pelvis of a user comprising: 
 a sitting surface operatively connected to a motorized pivot mechanism;    a control unit and power supply for controlling the movement of the motorized pivot mechanism; and    the motorized pivot mechanism configured to pivot the sitting surface about a central axis through an angle of less than about 20 degrees.    
   
   
       22 . The portable sitting support of  claim 22  wherein the sitting surface comprises two independent sections operatively connected to the motorized pivot mechanism with the motorized pivot mechanism configured to simultaneously pivot each independent section in a lateral direction and opposite to the respective independent section.