Passenger seat recline and tray table support mechanism
View Patent ↗A passenger seat recline mechanism including a fixed seat frame member supporting a pivot shaft about which a seat back link and a tray table link independently pivot, a seat back pivotally connected to the seat back link such that the seat back link pivots forward as the seat back reclines, and a tray table leg pivotally connected to the tray table link such that the tray table link pivots along with the seat back link when the tray table leg is stowed and pivots independently of the seat back link when the tray table leg is deployed.
1. A passenger seat recline mechanism, comprising:
a fixed seat frame member supporting a pivot shaft about which a seat back link and a tray table link independently pivot;
a seat back pivotally connected to the seat back link such that the seat back link pivots forward as the seat back reclines; and
a tray table leg pivotally connected to the tray table link such that the tray table link pivots along with the seat back link when the tray table leg is stowed and pivots independently of the seat back link when the tray table leg is deployed.
2. The passenger seat recline mechanism of claim 1 , further comprising a tray table stop pin supported by the fixed seat frame member at a position vertically above the pivot shaft.
3. The passenger seat recline mechanism of claim 2 , wherein travel of the tray table link is limited in a forward direction by the seat back link and in a rearward direction by the tray table stop pin.
4. The passenger seat recline mechanism of claim 1 , wherein a portion of the tray table link laterally overlaps the seat back link such that the tray table link travels rearward with the seat back link as the seat back link travels rearward.
5. The passenger seat recline mechanism of claim 1 , wherein downward travel of the tray table leg is limited by the tray table link.
6. The passenger seat recline mechanism of claim 1 , wherein the pivot shaft and the tray table leg are pivotally attached to opposing ends of the tray table link.
7. The passenger seat recline mechanism of claim 1 , wherein the pivot shaft and the seat back are pivotally attached to opposing ends of the seat back link.
8. The passenger seat recline mechanism of claim 1 , wherein the seat back link and the tray table link are supported on the pivot shaft between the fixed seat frame member and the seat back.
9. The passenger seat recline mechanism of claim 1 , further comprising a tray table pivotally connected to the tray table leg such that the elevation of the tray table when deployed remains constant regardless of the position of the seat back.
10. An aircraft passenger seat, comprising:
a seat back and a seat bottom supported by a frame, the seat back configured to pivot between upright and reclined positions;
a pair of seat back recline and tray table support mechanisms respectively mounted to both sides of the seat back, each mechanism including a pivot shaft supported by a fixed member of the frame about which a seat back link and a tray table link independently pivot, the seat back pivotally connected to the seat back link such that the seat back link pivots forward as the seat back reclines, and a tray table leg pivotally connected to the tray table link such that the tray table link pivots along with the seat back link when the tray table leg is stowed and pivots independently of the seat back link when the tray table leg is deployed; and
a tray table pivotally connected to and cooperatively supported between the tray table legs of the mechanisms such that the elevation of the tray table when deployed remains constant regardless of the position of the seat back.
11. The passenger seat of claim 10 , wherein each mechanism further comprises a tray table stop pin supported by the fixed seat frame member at a position vertically above the pivot shaft.
12. The passenger seat claim 11 , wherein in each mechanism travel of the tray table link is limited in a forward direction by the seat back link and in a rearward direction by the tray table stop pin.
13. The passenger seat of claim 10 , wherein in each mechanism a portion of the tray table link laterally overlaps the seat back link such that the tray table link travels rearward with the seat back link as the seat back link travels rearward.
14. The passenger seat of claim 10 , wherein in each mechanism downward travel of the tray table leg is limited by the tray table link.
15. The passenger seat of claim 10 , wherein in each mechanism the pivot shaft and the tray table leg are pivotally attached to opposing ends of the tray table link.
16. The passenger seat of claim 10 , wherein in each mechanism the pivot shaft and the seat back are pivotally attached to opposing ends of the seat back link.
17. The passenger seat of claim 10 , wherein in each mechanism the seat back link and the tray table link are supported on the pivot shaft between the fixed seat frame member and the seat back.
18. The passenger seat of claim 10 , wherein the tray table is against the seat back when stowed and spaced apart from the seat back when deployed.