Locking device for a tray table system in a seat, in particular an aircraft passenger seat

Abstract

In the case of a locking device for a tray table system in a seat, in particular an aircraft passenger seat, with a first (3) and a second tray table part (5) that can be moved around swivel axes (25 or 37), different from one another, between horizontal use positions and non-use or stowed positions, closing parts (43, 47) are assigned to the two tray table parts (3, 5) and can be adjusted relative to one another in an active position, in which they close with respect to one another to keep them from raising a tray table part (3) in a use position.

Description

Below, the invention will be explained in more detail based on the embodiments shown in the drawing. Here:

FIG. 1, in a perspective oblique view, shows a partial view of the center console of an aircraft passenger seat and a seatback portion of an adjacent front seat;

FIG. 2 shows a perspective oblique view of the tray table systems, shown on an enlarged scale compared to FIG. 1, that are mounted between two adjacent aircraft passenger seats on a central carrier plate of a center console, whereby only the essential components of the tray table systems can be seen without linings and other structures of the console;

FIG. 3 shows a view similar to FIG. 2, with, however, a first tray table part from the console being depicted pulled out upward;

FIG. 4 shows a cutaway and diagrammatically simplified perspective oblique view of only one portion of the center console with tray table parts located therein in the use position;

FIG. 5 shows a view similar to FIG. 4, with, however, a tray table part from the first use position shown in FIG. 4 being moved out in the direction of flight into a second use position, and

FIG. 6 shows a diagrammatically simplified perspective oblique view in which the closing parts of the locking device between tray table parts are illustrated according to another embodiment of the invention.

Claims

1. Locking device for a tray table system in a seat, in particular an aircraft passenger seat, with a first (3) and a second tray table part (5) that can be moved around swivel axes (25 or 37), different from one another, between horizontal use positions and non-use or stowed positions, characterized by closing parts (43, 47; 73, 77) that are assigned to the two tray table parts (3, 5) and that can be adjusted relative to one another in an active position, in which they close with respect to one another to keep them from raising a tray table part (3) in the use position.

2. The locking device according to claim 1, wherein a first tray table part (3) that is recessed in its stowed position in a shaft of a console (1) that delimits the seat to the side can be removed from the console (1) to be moved into the use position and can pivot around a shaft (25) that is located on the console (1) and that runs in a direction of travel/flight.

3. The locking device according to claim 2, wherein a tray table flap (5) that covers the shaft of the console (1) in the use position and releases the shaft in the non-use position is provided as a second tray table part and can be pivoted around an axis (37), which is placed parallel to the axis (25) of the first tray table part (3) and is placed offset with respect to the console (1) against the center of the console.

4. The locking device according to claim 3, wherein the first tray table part (3) between a first use position—in which it is oriented to the shaft of the console (1), is connected to the lateral edge of the tray table flap (5) in the use position, and forms a lateral extension of the tray table flap surfaces—can be moved forward along this lateral edge in the direction of travel/flight into the second use position.

5. The locking device according to claim 4, wherein the closing parts (43, 47; 73, 77), assigned to the tray table parts (3, 5), can be adjusted relative to one another in their active position based on the moving of the first tray table part (3) from its first use position.

6. The locking device according to claim 5, wherein the first tray table part (3) is mounted on a support arm (21) that can pivot on the console (1) for its shifting movement between the first use position and the second use position, moved forward.

7. The locking device according to claim 6, wherein the closing part (43) that is assigned to the first tray table part (3) is mounted below the tray table surface of the first tray table part (3) on the support arm (21) and can be moved between the active position and the inactive position.

8. The locking device according to claim 7, wherein as a closing part on the support arm (21), a locking element (43) is provided that is pivot-mounted, configured between the support arm and the underside of the first tray table part (3), and that, when pivoted to a position corresponding to the active position, works with a second closing part forming a seat (47) that is provided on the adjacent lateral edge of the tray table flap (5) to form a closure.

9. The locking device according to claim 8, wherein a carrier pin (51) projecting in the direction toward the support arm (21) is provided on the underside of the first tray table part (3), and said carrier pin, when the first tray table part (3) is moved from the first use position, moves the locking element (43) back into the active position and during retraction into the first use position moves the locking element (43) back into the inactive position.

10. The locking device according to claim 8, wherein when the locking element (43) is in the active position, the closing parts (43, 47) work to form a closure to keep both the first (3) and the second tray table parts (5) from being raised from the respective use positions.

11. The Locking device according to claim 5, wherein the closing parts have a groove-tongue guide (73, 77) between a first tray table part (3), on the one hand, and a tray table flap (5), on the other hand, along which guide the first tray table part (3) moves forward in its shifting movement from the first use position.

12. The locking device according to claim 1, wherein the groove-tongue guide has a tongue (77) that projects from the edge (75) of the first tray table part (3) and extends in the direction of movement and a groove (73) located on the assigned edge of the tray table flap (5), which are offset with respect to one another in the direction of movement of the first tray table part (3) such that no mutual engagement of tongue (77) and groove (73) is provided in its first use position, but the latter are inserted in one another in the shifting movement.

13. The locking device according to claims 4, wherein the first tray table part (3) in a forward shifted second use position can be combined to form an enlarged tray table surface with a third tray table part (15), which for its part can be brought into a use position extending far from the rear side (17) of the seatback of an adjacent front seat.