| 摘要 |
<p>An adjustable chair as a seat, a backrest pivoted on the seat for movement between an erect and an reclined position, and a leg rest mounted on the seat for movement between a retracted and an extended position. The seat is mounted on lateral portions of a frame for pivoting so that the angular position of the backrest relative to the frame may be changed either by pivoting the backrest relative to the seat, or by pivoting the seat relative to the frame. A damping arrangement damps the movement of the backrest relative to the frame at least between some of the angular positions of the backrest, and an arresting arrangement including interengaging teeth is accommodated in an armrest pivoted on the backrest, which arrangement permits arresting the backrest in a selected one of the angular positions thereof. The damping arrangement includes a helical spring accommodated in the armrest and having one end connected to the backrest and a free end into which a connecting rod connected to a lateral portion of the frame extends, the connecting rod and the spring having cooperating abutments which engage one another within a certain range of movement of the backrest so that the spring is tensioned and thus damps the movement of the backrest. A connecting member is pivotably mounted on one of the lateral portions and has a closed elongated slot, and the seat has a projecting member which is received and guided in the elongated slot, whereby the seat is limited to movement between a substantially horizontal and an inclined position.</p> |
