| 摘要 |
<p>Self-balanced ergonomic armchair, composed of a seat body (1), a sustaining support (2) and a mechanism (3) for adjusting the angular position of the body (1). The adjustment mechanism is composed of a structure which, in vertical cross-section, defines a jointed triangle, whose vertices (8, 9 and 10) are constituted by freely rotating shafts. Side (11) of this triangle has fixed length and position, side (12) has fixed length and swivelling position, and side (13) has variable length and swivelling position. The seat body (1) rests on and is fixed to the second and third sides, while via the first side (11) is mounted the mechanism on the support (2). The shaft (8) is constituted by a torsion bar that is mounted with freedom of complete rotation on the side (11) and carries secured to one end the side (13) and on the opposite end a lever with an adjustment control (33). <IMAGE></p> |
