| 摘要 |
An aircraft seat a squab (6) and a backrest (8), both being movable, and a seat chassis (1), via which the seat can be fixed to a floor. A mechanism for moving the squab and the backrest has a linear runner (2) mounted on the seat chassis and a seat frame sub-frame (3) bearingly mounted on the linear runner. The squab is pivotally on the sub-frame substantially at its front edge and the backrest is pivotally mounted on the squab substantially at the back edge of the squab and the bottom of the backrest. The mechanism includes a linear drive (4) for extending (and retracting) the sub-frame on the runner with respect to the seat chassis between a retracted, TTL position and an extended position. A first cam track (12) in a first cam track member (11) fast with the seat chassis for adjusting the height of the back edge of the seat squab, the first cam track being generally parallel to the linear runner through the majority of its length and having a rearmost substantially vertical portion (31). A first cam follower mechanism (22, 23, 24, 25, 26, 27, 29) interconnects back edge of the seat squab, the first cam track and the linear drive, for linear drive of the sub-frame with height adjustment of the rear edge of the seat squab. The arrangement is such that whilst the first cam follower mechanism is co-operating with the rearmost portion of the cam track, the predominant effect of the linear drive means is lowering (and raising) of the rear of the seat squab with respect to the front of the seat squab. A second cam track (41) is provided fast with the seat chassis for adjusting the inclination of the backrest and a second follower (47) is connected to the seatback and engaged with the second cam track. |
