Office chair, with height and pitch adjustment, has a ratchet setting system for a sliding seat plate to set its seating position independently of the swing movements of the backrest

摘要

The chair attachment, and especially for an office chair with height and pitch adjustment, has a seat plate (50) with an additional and independent sliding movement at the seat carrier (25) in the seating direction. Its movements are not linked to the swing movements of the backrest carrier (45). A ratchet system (60) is at the seat plate to be locked in at least two positions at a ratchet system (35) at a jib (26').