Mechanism enabling an ergonomic seat sitting portion of a seat to tilt between a working position and a listening position

摘要

The present invention relates to a mechanism which enables an ergonomic seat to adopt two different inclinations in order to respect the listening/resting position and the working position of a user by a simple forward or backward movement of his torso. The mechanism comprises sleeves [bushes] with needles (8) free to rotate on projections (2) fixed to an immobile support (1). Plates (3) on which guides [slides] (4) are located are mounted either side of the seat (5). As we reach the ends of the guides (4), the sleeves with the needles (8) stop the circular movement of the seat (5) in the working position or listening position. The mechanism of the invention is adaptable to all kinds of chairs for school, professional or home use. Moreover it can prevent or cure back ache. IMAGE