Dynamic chair with base, intermediate piece and seat - has flexible connection as resetting member joining hollow cylindrical telescopic intermediate piece to base, and stop tilt frame, bearing

摘要

The dynamic chair consists of a base (1) to which is joined an intermediate piece (2) by an elastically flexible connecting element (6) at the same time acting as a resetting member and vibration dampening connector. The intermediate piece is rigidly joined to a seat (3) and can be tilted vertically sideways by a single bearing, with the tilt is restricted by a stop piece in the form of an enclosed frame (5). The intermediate piece consists of a top hollow cylinder (8) joined at the top to the seat, and a bottom hollow cylinder (7) telescoping together and containing a pretensioned spiral spring (11). USE/ADVANTAGE - The economically and easily produced dynamic chair enables the sitter to sit safely with the back muscles and intervertebral discs active.