Active dynamic seating device

Abstract

An active dynamic seating device is provided that includes a seat, a central part and a base part, where a stable sitting position is attained by additionally supporting one or both legs of a user. The seating device encompasses a tone generator, which emits a tone in response to carrying out a certain change of the sitting position. The seating device is particularly well-suited for, for example, carrying out gymnastics exercises.

1 . An active dynamic seating device comprising:
 a seat;   a central part;   a base part; and   a tone generator for emitting a tone in response to a change in a sitting position.   
   
   
       2 . The active dynamic seating device according to  claim 1 , wherein a specific change of the sitting position as part of an exercise stimulates the tone generator to emit a certain tone, which is associated with the exercise. 
   
   
       3 . The active dynamic seating device according to  claim 2 , wherein the tone generator responds to an exercise, in which the pelvis of the user cyclically carries out a circular or ellipsoidal motion. 
   
   
       4 . An active dynamic seating device according to  claim 1 , wherein the tone generator comprises a movable mass, which is subject to acceleration by changing the sitting position. 
   
   
       5 . The active dynamic seating device according to  claim 4 , wherein the tone generator comprises a ball, the motion of which is guided within a ball track. 
   
   
       6 . The active dynamic seating device according to  claim 5 , wherein the ball track is self-contained. 
   
   
       7 . The active dynamic seating device according to  claim 5 , wherein the ball track is oriented on a central axis, which runs through the seat and the base part, and wherein the ball track encloses the central axis or runs in a plane, which intersects the central axis at a right angle. 
   
   
       8 . The active dynamic seating device according to  claim 5 , wherein the seating device is a rocking stool, the base part ( 2 ) of which is formed by a circular base plate comprising a convex support surface, wherein the ball track is disposed on the base part of the seating device. 
   
   
       9 . The active dynamic sitting device according to  claim 5 , wherein the ball track is integrated into the base part and is incorporated in the course of the production process of the base. 
   
   
       10 . A tone generator for an active dynamic seating device comprising a seat, a central part, and a base part, wherein a stable sitting position is attained only by additionally supporting one or both legs of a user, and wherein the tone generator emits a tone in response to carrying out a certain change of the sitting position. 
   
   
       11 . The tone generator according to  claim 10 , wherein the tone generator is provided in the base part of the seating device and comprises a ball that runs in a ball track. 
   
   
       12 . The active dynamic seating device according to  claim 5 , wherein at least one delimiter on which the ball is reflected is inserted into the ball track. 
   
   
       13 . A delimiter for an active dynamic seating device comprising a seat, a central part, a base part, whereby a stable sitting position is attained only by additionally supporting one or both legs of a user, and a tone generator, which comprises a ball, the motion of which is guided within a ball track, wherein the delimiter is inserted into the ball track and is fixed in permanent position. 
   
   
       14 . The delimiter according to  claim 13 , wherein the delimiter comprises a core made of metal or wood, which is encased by an elastic hose. 
   
   
       15 . A cover for an active dynamic seating device comprising a seat, a central part, and a base part, whereby a stable sitting position is attained only by additionally supporting one or both legs of a user, and a tone generator located in the base part, the tone generator comprising a ball, the motion of which is guided within a ball track, wherein the cover at least partially covers the base part in a concentric manner, wherein the central column of the seating device is guided through a hole in the cover, and wherein a visible side of the cover is imprinted with color. 
   
   
       16 . The cover according to  claim 15 , wherein the cover encompasses a radially extending slot. 
   
   
       17 . The according to  claim 1 , wherein a stable sitting position is attained only by additionally supporting one or both legs of a user.