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EP-4568891-B1 - AIRCRAFT PASSENGER SEAT

EP4568891B1EP 4568891 B1EP4568891 B1EP 4568891B1EP-4568891-B1

Inventors

  • Bopp, Metin Albert
  • ALTUNBAS, Alper

Dates

Publication Date
20260513
Application Date
20231108

Claims (10)

  1. Aircraft passenger seat (2), wherein the aircraft passenger seat (2) has a base (5), a seating surface element (6) and a backrest element (7, 15), wherein the backrest element (7, 15) has a first beam (9) and a second beam (10), wherein the backrest element (7, 15) has an elastic element (20, 20a, 20b), wherein the elastic element (20, 20a, 20b) extends from the first to the second beam (9, 10), such that the elastic element (20, 20a, 20b) forms a support surface (14) for a back of a user of the aircraft passenger seat (2), wherein the elasticity of the elastic element (20, 20a, 20b) is adjustable, wherein the elastic element (20, 20a, 20b) is designed as a stretchable strap or as a stretchable band, wherein the elastic element (20b) is arranged on the backrest element (7, 15) so as to run around the first and the second beam (17, 18), wherein a first and a second end (25, 26) of the elastic element (20b) are movable towards one another and away from one another, wherein there is a tension device (27), wherein the first and the second end (25, 26) of the elastic element (20b) are connected to a tension element (28) of the tension device (27), wherein an adjusting element (29) of the tension device (27) engages on the tension element (28), wherein the tension element (28) can be moved in a direction along a longitudinal axis of the first or the second beam by the adjusting element (29), such that an adjustment of the elasticity of the elastic element (20b) takes place during a movement of the tension element (28).
  2. Aircraft passenger seat (2) according to the preceding Claim 1, characterized in that the backrest element (7, 15) has a plurality of elastic elements (20, 20a, 20b).
  3. Aircraft passenger seat (2) according to any one of the preceding claims, characterized in that the first and the second beam (17, 18) are connected to each other by a first and a second cross brace (19), such that the beams (17, 18) and the cross braces (19) form a frame (16).
  4. Aircraft passenger seat (2) according to Claim 2 or according to Claim 3 if Claim 3 is dependent on Claim 2, characterized in that the elasticity of a first of the plurality of elastic elements (20, 20a, 20b) is adjustable, wherein the elasticity of a second of the plurality of elastic elements is invariable.
  5. Aircraft passenger seat (2) according to any one of the preceding claims, characterized in that the position of the backrest element (7, 15) relative to the base (5) is invariable.
  6. Aircraft passenger seat (2) according to any one of the preceding claims, characterized in that the tension element (28) is designed as a ring, as an eyelet or as a rod.
  7. Aircraft passenger seat (2) according to any one of the preceding claims, characterized in that the adjusting element (29) is designed as a cable or as a wire.
  8. Aircraft passenger seat (2) according to any one of the preceding claims, characterized in that the aircraft passenger seat (2) has a shaft (31), wherein the adjusting element (29) is connected to the shaft (31), wherein, during a rotational movement of the shaft (31), the adjusting element (29) is wound onto or off the shaft (31), wherein a position of the tension element (28) is changed by the winding process of the adjusting element (29).
  9. Seat row (1) having an aircraft passenger seat (2) according to any one of the preceding claims.
  10. Aircraft having an aircraft passenger seat (2) according to any one of Claims 1 to 8 or a seat row according to Claim 9.

Description

State of the art Passenger seats with one or more seats are known in a variety of designs for equipping passenger aircraft, especially long-haul aircraft. A seat consists of a seat base and a backrest, and at a passenger seat, almost always different seating positions can be set by changing the position of the seat base, the backrest, and often both parts. This allows passengers to switch between more active seating positions in an "upright position", e.g. for eating meals or for takeoff and landing, and more passive seating positions in a "reclined position", e.g. for relaxing and sleeping, as they please. In particular, various solutions for moving the seatback are known. Moving the seatback allows for seat settings that, for example, minimize the impact on the movement space, the so-called "living space," of neighboring passengers, especially those in a row behind. The DE 10 2005 015 143 A1 Disclosing a seat, in particular a passenger seat, with seat components such as a seat section and a backrest, as well as with at least one upholstery section that has a pretension in at least one direction and at least partially and extends between frame parts of an attributable seat component. This is achieved by the fact that at least one controllable adjustment device is provided which, within a predefinable range and reversibly, sets the required tension. The ability to apply different pre-tensions to each upholstery section allows the seat user to individually adjust the seat to their comfort and health needs. Due to the requirement in air transport to make seating arrangements as lightweight as possible and to make the best possible use of a user's available "living space", the design of comfortably adjustable, comparatively lightweight, comparatively inexpensive and at the same time stable passenger seats presents a particular challenge. Purpose and advantages of the invention The object of the present invention is to provide an improved passenger seat. In particular, to provide a passenger seat which has an improved comfort function. Specifically, to provide a passenger seat which has improved legroom or an improved "living space" for a user sitting behind the passenger seat. This problem is solved by an aircraft passenger seat having the features of claim 1. Further possible embodiments of the invention are listed in the dependent claims. The invention relates to an aircraft passenger seat, wherein the aircraft passenger seat comprises a frame, a seat surface element and a backrest element. The following directional references advantageously refer to the seating direction of the passenger seat. For example, the seating direction of the passenger seat in the arranged state is The direction of flight of the aircraft is also determined by the passenger seat in the aircraft. For example, the frame is designed for mounting in the floor area of a passenger cabin. For example, the frame has a seat divider and struts running transversely to the seating direction, with the seat divider being held by the struts. For example, the frame has two seat dividers. It is conceivable that the two seat dividers are connected to each other by a strut. It is also conceivable that the seat dividers are designed for mounting the passenger seat in the floor area of the passenger cabin. The frame includes, for example, a particularly rigid housing for the backrest element. The housing is designed, for example, as a backrest shell. The backrest shell, for example, permanently fixes the extension of the passenger seat, for example, against the seating direction, in a rearward area. For example, the seat surface element is designed to provide a seating surface for a user, and the backrest element is designed to provide a backrest for the user's back in the aircraft seat. For example, the seat surface element is designed as a seat shell or as a seat cushion. For example, the passenger seat has a backrest. It's conceivable that the backrest consists of a backrest element and a backrest shell. For instance, the backrest element might have a frame. The core of the invention is seen in the fact that the backrest element has a first spar and a second spar, wherein the backrest element has an elastic element, the elastic element extending from the first to the second spar, such that the elastic element provides a backrest surface for the back of a user of the aircraft seat. The elastic element is adjustable, allowing for a shift in the passenger's back position, thus enabling a more relaxed seating experience. For example, this ensures that the legroom of a passenger seated in a separate seat behind the first seat remains unchanged. For example, an elastic element is understood to have the property of changing its shape under the influence of a force, e.g., from the user, and returning to its original shape when the force is removed. For example, adjusting the elastic element deforms it. For example, deformation of the elastic element chang