ADJUSTABLE CHAIRS

摘要

An adjustable size chair structure is described. The chair has a base frame (61, 62) with a first pair of upwardly and rearwardly extending forward frame members and a second pair of upwardly extending frame members (62) mounted behind the first on to which are respectively slidably mounted a seat back (70) and seat portion (63). Where they intersect, a linking mechanism is provided, for example a flange (75) laterally of the seat portion and a slide block (73) with a groove angled relative to the direction of telescopic movement of the back (70) on the frame member (61). This ensures that both back and seat portions (70, 63) move together, either to move the seat back (70) upwards and rearwards as the seat portion (63) is moved upwards and forwards or vice versa. A locking mechanism (78) may hold the seat at the desired size.