Chair, especially and office or work chair

Abstract

The invention relates to a chair, especially an office or work chair or similar, whereon a back-rest part () can be placed in an inclined position from an initial or rest position via a first axis of rotation (). A seating part () performs a longitudinal displacement around a second axis of rotation () and an inclined displacement around a third axis of rotation () in a synchronous manner with respect to the inclined movement of the back-rest part (). A return device () is provided for returning the back-rest part () and/or seating part () to the initial position or rest position. The office chair () comprises a carrier frame () which disposed centrically on the leg frame () and which supports in a stationary manner the first axis of rotation () on the centre of the leg frame, said axis of rotation remaining at a constant, predetermined distance above the seating part () in the rest position and in all inclined positions of the back-rest part (). Said first axis of rotation () is connected in a secure manner to the back-rest part () by means of a pivoting lever ().