WO2018184660A1 - A seat for a vehicle - Google Patents

A seat for a vehicle Download PDF

Info

Publication number
WO2018184660A1
WO2018184660A1 PCT/EP2017/057891 EP2017057891W WO2018184660A1 WO 2018184660 A1 WO2018184660 A1 WO 2018184660A1 EP 2017057891 W EP2017057891 W EP 2017057891W WO 2018184660 A1 WO2018184660 A1 WO 2018184660A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
backrest
leg rest
pivot
seat pan
Prior art date
Application number
PCT/EP2017/057891
Other languages
French (fr)
Inventor
Andreas Mueller
Wolfgang Kreutz
Original Assignee
Adient Us Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adient Us Llc filed Critical Adient Us Llc
Priority to PCT/EP2017/057891 priority Critical patent/WO2018184660A1/en
Publication of WO2018184660A1 publication Critical patent/WO2018184660A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
    • B60N2/07—Slide construction
    • B60N2/0722—Constructive details
    • B60N2/0732—Attachment of seat frame to the slide, e.g. eyelets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/1807—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the cinematic
    • B60N2/1842—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the cinematic pivoting about an axis located in the rear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/185—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the drive mechanism
    • B60N2/1867—Cycloidal or planetary mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • B60N2/2222—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable the back-rest having two or more parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • B60N2/225—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms
    • B60N2/2252—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms in which the central axis of the gearing lies inside the periphery of an orbital gear, e.g. one gear without sun gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/32—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles convertible for other use
    • B60N2/34—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles convertible for other use into a bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90—Details or parts not otherwise provided for
    • B60N2/919—Positioning and locking mechanisms
    • B60N2/933—Positioning and locking mechanisms rotatable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90—Details or parts not otherwise provided for
    • B60N2/995—Lower-leg-rests, e.g. calf-rests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
    • B64D11/0639—Arrangements of seats, or adaptations or details specially adapted for aircraft seats with features for adjustment or converting of seats
    • B64D11/0641—Seats convertible into beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
    • B64D11/0639—Arrangements of seats, or adaptations or details specially adapted for aircraft seats with features for adjustment or converting of seats
    • B64D11/0643—Adjustable foot or leg rests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
    • B64D11/0648—Lower frame constructions

Definitions

  • the present invention refers to a seat for a vehicle, in particular to an aircraft passenger seat.
  • U.S. Pat. No. 9,073,453 describes a seat including a seat pan having a seat pan front edge and a seat pan rear edge.
  • the seat pan front edge defines a first pivot point and the seat pan rear edge defines a second pivot point wherein the first pivot point remains in a substantially fixed position for each of the positions.
  • the European Patent 2,420,404 defines a vehicle seat comprising a vehicle seat vibration device and a suspension device.
  • the present invention seeks to improve a seat for a vehicle to bring the seat into one or more positions, e.g. into a taxi, take-off and landing position (also "TTL” or “TT&L” position called), an inclined position or a sleeping position.
  • a taxi, take-off and landing position also "TTL” or “TT&L” position called
  • the disclosure provides a seat for a vehicle, in particular an aircraft passenger seat, wherein the seat comprises at least a seat pan, a backrest and a leg rest.
  • the seat pan has at least a seat pan frame with two lateral seat pan sides, a front seat pan side and a back seat pan side.
  • the backrest has at least a backrest frame that is pivotably mounted to the back seat pan side at a backrest pivot axis.
  • the leg rest has a leg rest frame that is pivotably mounted to the front seat pan side at a leg rest pivot axis.
  • the leg rest is configured as a calf rest.
  • the seat pan frame is pivotably connected to a base structure by a single lever on each of the two lateral seat pan sides. Furthermore, the backrest and the leg rest are articulated with respect to the seat pan and the seat support structure is articulated with respect to the single levers such that the seat is positionable into at least one of a taxi, takeoff and landing position, a comfort inclined position or a sleeping position.
  • the seat pan, the backrest and/or the leg rest are independently articulated with respect to each other and with respect to the base by each of the single levers such that the seat is positionable into at least one of a taxi, takeoff and landing position, a comfort inclined position or a sleeping position.
  • the taxi, takeoff and landing position of the seat is a position in which the backrest is in a substantial upright position with respect to the seat pan and/or the base.
  • the backrest is in a position with an angle with respect to a vertical axis of about 3° to 12°.
  • the leg rest is in a position with an angle with respect to the vertical axis of about 0° or less than 0°, for example -3° to -10°.
  • the comfort inclined position of the seat is a substantial inclined position in which the backrest and/or the leg rest are in a substantial inclined position.
  • the backrest is in a position with an angle with respect to the vertical axis of about more than 12° and less than 90°.
  • the leg rest is in a position with an angle with respect to the vertical axis of about more than 0° and less than 85°.
  • the sleeping position of the seat is a position in which the backrest and/or the leg rest are in a substantial inclined position.
  • the backrest is in a position with an angle with respect to the vertical axis of about 90°, in particular between 85° and 95°.
  • the leg rest is in a position with an angle with respect to the vertical axis of about 45°, in particular between 40° and 50°.
  • each of the single levers comprises two pivot points.
  • a first pivot point is substantially connected in relation to the base structure, in particular to a floor or to a length adjuster, for example to a track mechanism, e.g. to an upper track.
  • a second pivot point is substantially connected in relation to the seat pan frame.
  • the second pivot point is substantially fixed to a lateral seat pan frame part.
  • each of the pivot points is provided by a recliner mechanism.
  • the recliner mechanism is configured as a rotary recliner or a ratchet recliner.
  • the recliner mechanism is configured as a wobble drive mechanism.
  • the backrest is pivotably connected to the seat pan by at least one of a backrest pivot fitting in the backrest pivot axis.
  • the leg rest is pivotably connected to the seat pan by at least one of a leg rest pivot fitting in the leg rest pivot axis.
  • a number of drive units are provided to independently adjust the backrest by driving at least one of the pivot fittings, for example a drive unit for the backrest pivot fitting, a drive unit for the leg rest pivot fitting and/or a drive unit for the recliner mechanism.
  • a single drive unit is provided for each of the pivot fittings, the leg rest pivot fitting and the recliner mechanism.
  • a control unit is provided to independently control the drive units.
  • the control unit is configured to control adjusting movement of at least one of the seat pan, the backrest or the leg rest.
  • the control mechanism provided by the control unit allows that the seat is continuously adjustable in many positions, for example between the TTL position, comfort seating position and sleeping position.
  • the backrest further comprises a shoulder support and/or a headrest.
  • the backrest and the shoulder support are articulated with respect to each other by at least a shoulder support pivot fitting.
  • the leg rest is adjustable in length.
  • the length adjustment allows a customized length of the leg rest of different passengers.
  • the seat is locked by a latch mechanism when the seat is in the taxi, takeoff and landing position.
  • the latch mechanism is configured as a latch and a pawl wherein the latch is connected to the base structure, e.g. a track mechanism, a length adjuster or a floor, and the pawl is connected to lever, or vice versa.
  • Figure 1 is a side view of an embodiment of a seat for a vehicle, in particular for an aircraft, with the seat being shown in a taxi, takeoff, and landing position,
  • Figure 2 is a side view of the seat showing in figure 1 with the seat being shown in a comfort seating position or limited reclined position,
  • Figure 3 is a side view of the seat showing in figure 1 with the seat being shown in a sleeping position
  • Figure 4 is a perspective view of a seat with the seat being shown in a taxi, takeoff, and landing position and having an upholstery,
  • Figure 5 is a perspective view of a seat with the seat being shown in a taxi, takeoff, and landing position without an
  • Figures 6A to 6C are perspective views of the seat showing in figure 5 with the seat support structure covered by an upholstery or without an upholstery
  • Figures 7A to 7E are perspective views of the seat showing in figure 1 with a number of drive units
  • Figure 8 is a perspective view of a seat mounted in a seat suite
  • the figure 1 shows a side view of an embodiment of a seat 1 for a not further shown vehicle, in particular for an aircraft.
  • the seat 1 is shown in a taxi, takeoff, and landing position, which is further described as TTL position P1 .
  • the coordinate system comprises a longitudinal axis x, a transverse axis y and a vertical axis z in relation to the aircraft.
  • the seat 1 comprises a seat pan 2, a backrest 3 and a leg rest 4.
  • the backrest 3 comprises a shoulder support 3.1 .
  • the backrest 3 can comprise additionally or alternatively a headrest 3.2, wherein the backrest 3 shown in figure 1 comprises the headrest 3.2.
  • the seat 1 comprises a seat support structure 5 which is connected to a base structure 6.
  • the seat support structure 5 provides an upholstery U.
  • the upholstery U comprises at least one of a seat pan upholstery part, a backrest upholstery part and/or a leg rest upholstery part.
  • the upholstery U is provided by an one-piece formed upholstered part.
  • the upholstery U can be at least partially attached to the seat support structure 5 by not further shown force-fitted, adhesive and/or form-fitted connection points.
  • the force-fitted, adhesive and/or form-fitted connection can provide hook and loop fastener, clip, engage, snap-in and/or plug-in connection points.
  • the upholstery U comprises a number of upholstered cover elements, wherein the seat support structure 5 can be covered by at least one upholstered cover element.
  • the upholstery U and the seat support structure 5 can be at least partially bonded together.
  • the seat support structure 5 provides a seat pan frame 5.1 for the seat pan 2 with two lateral seat pan sides 5.1 .1 , 5.1 .2, wherein only one of the two lateral seat pan sides 5.1 .1 is shown in figure 1 . Additionally, the seat pan frame 5.1 , thereby the seat pan 2, comprise a front seat pan side 5.1 .3 and a back seat pan side 5.1 .4.
  • the seat support structure 5 comprises a backrest frame 5.2 for the backrest 3 which is pivotably mounted to the back seat pan side 5.1 .4 at a backrest pivot axis PA1 (which is understood as an axis parallel to the transverse axis y).
  • a leg rest frame 5.3 for the leg rest 4 is provided by the seat support structure 5, wherein the leg rest frame 5.3 is pivotably mounted to the front seat pan side 5.1 .3 at a leg rest pivot axis PA2 (which is
  • the leg rest 4 is configured as a calf rest.
  • the seat support structure 5 comprises a shoulder support and headrest frame 5.4 which is pivotably mounted to the backrest frame 5.2 at a shoulder support pivot axis PA5.
  • the backrest frame 5.2 and the shoulder support and headrest frame 5.4 are articulated with respect to each other by the shoulder support pivot axis PA5.
  • the backrest 3 and the leg rest 4 are articulated with respect to the seat pan 2 and the seat support structure 5 is articulated with respect to single levers 7, 8 such that the seat 1 is positionable into at least one of the TTL position P1 , a comfort inclined position P2 shown in figure 2 or a sleeping position P3 shown in figure 3.
  • the seat pan 2, the backrest 3, the leg rest 4 and/or the shoulder support 3.1 are articulated with respect to each other such that the seat 1 is positionable into at least one of the TTL position P1 , the comfort inclined position P2 and the sleeping position P3.
  • the backrest frame 5.2 is pivotably connected to the seat pan frame 5.1 by at least one of a backrest pivot fitting PF1 in the backrest pivot axis PA1 .
  • the leg rest frame 5.3 is pivotably connected to the seat pan frame 5.1 by at least one of a leg rest pivot fitting PF2 in the leg rest pivot axis PA2.
  • each of the pivot fittings PF1 , PF2 is provided by a recliner mechanism and thereby comprising recliner fittings.
  • the seat pan frame 5.1 is connected to the base structure 6 by the single levers 7, 8, wherein only one of the single levers 7 is shown in figure 1 .
  • the single lever 7, 8 is provided by a swing arm mechanism.
  • the base structure 6 provides a track mechanism for length adjustment of the seat 1 . Therefore, the track mechanism provides a length adjuster for the seat 1 .
  • the track mechanism provides a lower track 6.1 fixedly coupled to the aircraft floor F and an upper track 6.2 which is slidable coupled to the lower track 6.1 for a sliding movement in a longitudinal direction of the aircraft.
  • the seat pan frame 5.1 is connected to the upper track 6.2 in a front region of the upper track 6.2.
  • the seat pan frame 5.1 is pivotably connected to the upper track 6.2 on each of the two lateral seat pan sides 5.1 .1 , 5.1 .2. Therefore, the seat pan 2, the backrest 3 and the leg rest 4 are articulated with respect to each other and with respect to the base structure 6 by each of the single levers 7, 8.
  • the backrest 3 and the leg rest 4 are pivotable with respect to the seat pan 2.
  • the seat structure 5 with its components such as the seat pan 2, the backrest 3 and the leg rest 4 are articulated with respect to each other by electric-powered fittings PF1 to PF4' and with respect to the base
  • Each of the single levers 7, 8 comprises two pivot points PA3, PA4 providing a first pivot point PA3 and a second pivot point PA4 (the pivot axes of the single lever pivot points PA3, PA4 are understood as axes parallel to the transverse axis y).
  • the first pivot point PA3 is substantially connected in relation to the base structure 6, in particular to the floor F or to the track mechanism, especially to the upper track 6.2.
  • the second pivot point PA4 is substantially connected in relation to the seat pan frame 5.1 .
  • the second pivot point PA4 is substantially fixed to each of the lateral seat pan sides 5.1 .1 , 5.1 .2.
  • each of the single lever pivot is provided in relation to the back seat pan side 5.1 .4.
  • each of the single lever pivot is provided in relation to the back seat pan side 5.1 .4.
  • the recliner mechanism is configured as a rotary recliner or a ratchet recliner or any other possible recliner mechanism.
  • the recliner mechanism is configured as a wobble drive mechanism.
  • the TTL position P1 of the seat 1 is a position in which the backrest 3 is in a substantial upright position with respect to the seat pan 2, the base structure 6 as well as to the floor F.
  • the backrest 3 is in a position with an angle with respect to the vertical axis z, especially of about 3° to 12°.
  • the leg rest 4 is in a position with an angle with respect to the vertical axis z, especially of about 0° or less than 0°, for example -3° to -10°.
  • the single levers 7, 8 are in a position with an angle with respect to the vertical axis z of about -45°.
  • the seat pan 2 is slightly inclined with respect to the horizontal plane, wherein the front seat pan side 5.1 .3 is positioned higher than the back seat pan side 5.1 .4.
  • a control unit 9 is provided to a passenger of the seat 1 to independently adjust the seat 1 into any one of the positions P1 to P3.
  • the seat 1 is automatically driven into the TTL position P1 , any one of the possible comfort inclined positions P2 or the sleeping position P3 as desired by the passenger.
  • a sliding mechanism provided by the base structure 6, in particular by the track mechanism is adjustable in the longitudinal direction. The seat 1 can be driven forwards or backwards, particularly depending on an aft or fore space of the seat 1 .
  • the backrest 3 and the leg rest 4 are independently adjustable so that an inclination of those seat parts is configurable by actuating pivoting movements around one of the pivot axes PA1 , PA2.
  • the seat pan 2 can be moved in the longitudinal direction and depending on a swiveling of the single levers 7, 8 in the vertical direction by actuating a pivoting movement of the single levers 7, 8 around the pivot points PA3, PA4.
  • the movement of the seat 1 and/or the seat pan frame 5.1 in the longitudinal direction is provided by the pivoting movement of the single levers 7, 8 around the first pivot point PA3.
  • the movement of the seat 1 and/or the seat pan frame 5.1 in the vertical direction is provided by the pivoting movement of the single levers 7, 8 around the first pivot point PA3.
  • an inclination adjustment of the seat pan 2 around an axis parallel to the transverse axis y is provided by the swiveling of the single levers 7, 8 around the pivot point PA4.
  • the single levers 7, 8 can be driven in a position with an angle with respect to the vertical axis z of about more an angle depending on a fore space of the seat 1 and less than an angle depending on an aft space of the seat 1 .
  • Figure 2 is showing a side view of the seat 1 with the seat 1 being in one of many desirable comfort inclined positions P2.
  • the comfort inclined position P2 of the seat 1 is a substantial inclined position in which the backrest 3 and/or the leg rest 4 are in a substantial inclined position.
  • the backrest 3 is in a position with an angle with respect to the vertical axis z of about more than 12° and less than 90°.
  • the leg rest 4 is in a position with an angle with respect to the vertical axis z of about more than 0° and less than 85°.
  • the shoulder support 3.1 and/or the headrest 3.2 can be in a substantial inclined position.
  • the shoulder support 3.1 and/or the headrest 3.2 can be in a position with an angle with respect to the vertical axis z of about more than 3° and less than 35°.
  • the single levers 7, 8 are positioned with an angle with respect to the horizontal axis x of about 30°.
  • the seat pan 2 is slightly inclined with respect to the horizontal plane, wherein the front seat pan side 5.1 .3 is positioned higher than the back seat pan side 5.1 .4. It is also possible to position the seat pan 2 parallel to the floor F as desired by the passenger.
  • the base structure 6, in particular the lower and the upper tracks 6.1 , 6.2 are both positioned in the TTL position P1 .
  • the upper track 6.2 can be positioned in the longitudinal direction, for example if the aft and/or fore space of the seat 1 provides enough space for the length adjustment of the seat 1 .
  • Figure 3 is showing a side view of the seat 1 with the seat 1 being in the sleeping position P3.
  • the sleeping position P3 of the seat 1 is a position in which the backrest 3 and/or the leg rest 4 are in a substantial inclined position.
  • the backrest 3 is in a position with an angle with respect to the vertical axis z of about 90°, in particular between 85° and 95°.
  • the leg rest 4 is in a position with an angle with respect to the vertical axis z of about 45°, in particular between 40° and 50°.
  • the shoulder support 3.1 and/or the headrest 3.2 can be in a position with an angle with respect to the vertical axis z of about 90°, in particular between 85° and 95°.
  • the seat 1 is in a completely elongated sleeping position P3, wherein the seat parts are positioned in a horizontal plane.
  • FIG 4 a side view of the seat 1 is shown with the seat 1 being in the TTL position P1 and having the upholstery U.
  • the upholstery U is a single-piece upholstery U, in particular comprising a separated headrest cushion fixed to a headrest region of the upholstery U.
  • the aircraft floor F provides a number of fixation points 10 for mounting the base structure 6 of the seat 1 to the aircraft floor F.
  • the base structure 6 comprises a base frame 1 1 having two lateral sides 1 1 .1 , wherein only one of the lateral sides 1 1 .1 is shown. Further, the base structure 6 comprises a front frame side 1 1 .2 and a back frame side 1 1 .3.
  • the lateral sides 1 1 1 .1 are fixedly secured to the floor F.
  • the front frame side 1 1 .2 and the back frame side 1 1 .3 are supported by a number of support rods 1 1 .4.
  • the support rods 1 1 .4 are provided to stabilize the base frame 1 1 against vibrations caused by the sliding movement of the track mechanism and/or caused by an operating aircraft.
  • the lower track 6.1 is fixedly mounted to the base frame 1 1 , in particular at two points each provided on one of the front frame side 1 1 .2 and the back frame side 1 1 .3.
  • the lower track 6.1 is mounted parallel and next to the support rods 1 1 .4.
  • Figure 5 is a perspective view of one exemplary embodiment of the seat 1 with the seat 1 being shown in the TTL position P1 without the upholstery U and a more detailed view of the seat support structure 5. Further, the base structure 6 and the aircraft floor F are shown.
  • the seat support structure 5 provides the seat pan frame 5.1 , the backrest frame 5.2, the leg rest frame 5.3 and the shoulder support and headrest frame 5.4.
  • the seat support structure parts are designed as welded tube frames, in particular made of a high-strength steel and/or any other possible alloys of metal and/or other elements, for example carbon.
  • the seat support structure parts are each made of a different material, for example depending on a determined stress and load level of each of the seat support structure parts.
  • the seat support structure 5 provides a number of support elements 12 connecting each of the lateral arranged sides of the seat support
  • the support elements 12 are designed as welded tube frames, in particular made of metal to stabilize the seat support structure 5 against mechanical vibrations.
  • the lateral arranged sides 5.4.1 , 5.4.2 of the shoulder support and headrest frame 5.4 are coupled to each other by one support element 12.
  • the lateral arranged sides 5.2.1 , 5.2.2 of the backrest frame 5.2 are coupled to each other by two support elements 12.
  • the lateral seat pan sides 5.1 .1 , 5.1 .2 are coupled to each other by one support element 12 arranged in the front seat pan side 5.1 .3.
  • the lateral pan sides 5.1 .1 , 5.1 .2 are coupled to each other by a further support element 12 which is arranged in the back seat pan side 5.1 .4.
  • leg rest frame 5.3 provides two lateral arranged
  • a front leg rest frame part 5.3.3 has a narrower shape than a back leg rest frame part 5.3.4.
  • the front leg rest frame part 5.3.3 can be fixedly mounted to the back leg rest frame part 5.3.4, for example by a form-fitted, force-fitted and/or adhesive connection.
  • the front frame part 5.3.3 and the back frame part 5.3.4 of the leg rest frame 5.3 can comprise the same shape, in particular the same width.
  • the backrest pivot axis PA1 is defined by a connecting element 13 pivotably coupling the lateral arranged
  • leg rest pivot axis PA2 of the leg rest frame 5.3 is defined by another connecting element 14 pivotably coupling the lateral arranged sides 5.3.1 , 5.3.2 of the leg rest frame 5.3 with the front seat pan side 5.1 .3.
  • the connecting elements 13, 14 are connecting links and/or rods.
  • the base structure 6 provides parallel arranged lower tracks 6.1 and parallel arranged upper tracks 6.2 slidable coupled to the lower tracks 6.1 . Further, the lower tracks 6.1 are mounted on the base frame 1 1 . Additionally, the base structure 6 provides the single levers 7, 8 which are connected to each other by at least one support element 12. In a possible embodiment, a number of support elements 12 are provided, wherein only a lower support element 12 is arranged between the levers 7 and 8. The lower support element 12 is provided in a region next to the first pivot points PA3 which are substantially connecting the single levers 7, 8 in relation to the base structure 6. At least one upper support element 12 is arranged between lateral seat pan sides 5.1 .1 and 5.1 .2.
  • another support element 12 is provided between each of the second pivot points PA4 of the single levers 7, 8 so that the single levers 7, 8 are substantially connected in relation to the seat pan frame 5.1 .
  • the support element 12 connecting the second pivot points PA4 provides a mechanical support to the seat pan frame 5.1 .
  • first pivot points PA3 of the single levers 7, 8 are coupled to each other and to the upper rail 6.2 by a connecting element 15, in particular a connecting link and/or rod.
  • Figures 6A to 6C are perspective views of the seat 1 showing in figure 5 with the seat 1 being in the TTL position P1 .
  • the seat 1 is shown with the support structure 5 covered by the upholstery U.
  • the seat support structure 5 is connected to the base structure 6, therefore to the aircraft floor F.
  • FIG 6C the seat 1 is shown with the seat support structure 5 and without the upholstery U. Further, the seat support structure 5 is connected to the base structure 6, therefore to the aircraft floor F.
  • a number of desirable pivot fittings PF1 to PF4' to adjust the inclination movements of the seat parts is shown.
  • different types, features and/or designs of pivot fittings PF1 to PF4' are also possible for the exemplary embodiment.
  • each of the pivot fittings PF1 to PF4' provides a recliner mechanism having an increased load-bearing capacity. Thereby, absorption of force in an event of an accident is increased.
  • the recliner mechanism provides one of shown continuous or continuous disc rediners R1 to R2'.
  • the continuous disc rediners R1 , R1 ' can provide a load-bearing capacity of about 2000Nm.
  • the continuous disc rediners R2, R2' can provide a load-bearing capacity of about 2500Nm.
  • each of the continuous disc rediners R1 , R2 can be driven by a drive unit D coupled to those rediners R1 , R2.
  • the drive unit D provides a power drive and/or a so-called ferrite motor or a rare earth motor, in particular a ferrite magnet motor or a rare earth magnet electric motor.
  • any other appropriate motors can be provided in the drive unit D to adjust the inclination movements of the pivot fittings PF1 to PF4'. Therefore, the independent adjustment of the movements of at least one of the seat pan 2, the backrest 3 or the leg rest 4 is provided.
  • the recliner mechanism provided by the pivot fittings PF1 to PF4' can provide one of shown pawl and sector disc rediners R3 to R3".
  • rediners R3 to R3" can provide a load-bearing capacity of about 2000Nm, another one providing a load-bearing capacity of about 2500Nm and a third one providing a load-bearing capacity of about 4000Nm.
  • a recliner interface using one welding geometry for the pivot fittings PF1 to PF4' and for each load class can be achieved.
  • the seat 1 is continuously adjustable in many positions due to the
  • each of the pivot fittings PF1 to PF4' can comprise not further shown flexible elements, in particular spring elements, for example recoil springs.
  • spring elements for example recoil springs.
  • FIGS 7A to 7E are perspective views of the seat 1 showing in figure 1 without the upholstery U and with a number of drive units D1 to D8.
  • the seat 1 is positioned in one of the many possible comfort inclined
  • the number of drive units D1 to D8 is provided to independently drive the frame parts of the seat support structure 5 and at least one of the pivot fittings PF1 to PF5.
  • each of the drive units D2 to D8 are connected to each of the connecting elements 13 to 17 to independently drive the pivot fittings PF1 to PF5.
  • a single drive unit D1 is provided for the shoulder support pivot fitting PF5 and drive units D2, D3 are provided for the backrest pivot fittings PF1 , PF1 '. Further, drive units D4, D5 are provided for the single lever second pivot fittings PF4, PF4' to adjust the inclination movement of the seat pan frame 5.1 .
  • two drive units D6, D6' are provided for the single lever first pivot fittings PF3, PF3' to adjust the movement in the longitudinal direction and in the vertical direction of the seat pan frame 5.1 .
  • Single drive unit D7 is provided for the leg rest pivot fittings PF2, PF2'.
  • the leg rest pivot fittings PF2, PF2' provides two drive units D7, D7' and a single drive unit D8 is provided for the leg rest frame 5.3 which is, as shown in the embodiment, adjustable in length.
  • the leg rest frame 5.3 comprises an adjustable, in particular extendable and retractable, second leg rest frame 5.3'.
  • the length adjustment allows a customized length of the leg rest frame 5.3 of different passengers.
  • control unit 9 is provided to independently control the drive units D1 to D8.
  • Figure 7B shows the length adjustable leg rest frame 5.3 comprising the second leg rest frame 5.3' being in a retracted position, the connecting element 17 providing the drive unit D8 for length adjustment of the second leg rest frame 5.3'.
  • each of the figures 7C to 7E shows a detailed view of the length adjustable leg rest frame 5.3 with the second leg rest frame 5.3' being in an extended position and comprising the connecting element 17 providing the drive unit D8 for length adjustment of the second leg rest frame 5.3'.
  • Figures 7D and 7E are enlarged section views of the leg rest frame 5.3 and the second leg rest frame 5.3' showing in figure 7C.
  • Figure 8 shows a perspective view of the seat 1 mounted in a seat suite S.
  • the seat 1 is positioned in the TTL position P1 having an occupant O sitting in the upholstered seat 1 .
  • the seat suite S is for example a private and individual seat cabin arranged in an aircraft cabin to provide privacy.
  • the seat suite S is fixedly attached to the aircraft floor F.
  • PA1 , PA2 pivot axis

Abstract

The present invention refers to a seat (1) for a vehicle, in particular to an aircraft passenger seat. Further, the present invention seeks to improve a seat (1) for a vehicle to bring the seat into one or more positions, e.g. into a taxi, take-off and landing position (P1), an inclined position (P2) or a sleeping position (P3).

Description

A SEAT FOR A VEHICLE
FIELD OF INVENTION
The present invention refers to a seat for a vehicle, in particular to an aircraft passenger seat.
DESCRIPTION OF THE RELATED ART
There are a wide variety of vehicle seats, in particular aircraft passenger seats known in the prior art.
For example, U.S. Pat. No. 9,073,453 describes a seat including a seat pan having a seat pan front edge and a seat pan rear edge. The seat pan front edge defines a first pivot point and the seat pan rear edge defines a second pivot point wherein the first pivot point remains in a substantially fixed position for each of the positions.
The European Patent 2,420,404 defines a vehicle seat comprising a vehicle seat vibration device and a suspension device.
SUMMARY OF THE INVENTION
The present invention seeks to improve a seat for a vehicle to bring the seat into one or more positions, e.g. into a taxi, take-off and landing position (also "TTL" or "TT&L" position called), an inclined position or a sleeping position.
The object is achieved by a seat for a vehicle according to claim 1 . Preferred embodiments are given in the dependent claims.
The disclosure provides a seat for a vehicle, in particular an aircraft passenger seat, wherein the seat comprises at least a seat pan, a backrest and a leg rest. The seat pan has at least a seat pan frame with two lateral seat pan sides, a front seat pan side and a back seat pan side. The backrest has at least a backrest frame that is pivotably mounted to the back seat pan side at a backrest pivot axis. The leg rest has a leg rest frame that is pivotably mounted to the front seat pan side at a leg rest pivot axis. In particular, the leg rest is configured as a calf rest.
Further, the seat pan frame is pivotably connected to a base structure by a single lever on each of the two lateral seat pan sides. Furthermore, the backrest and the leg rest are articulated with respect to the seat pan and the seat support structure is articulated with respect to the single levers such that the seat is positionable into at least one of a taxi, takeoff and landing position, a comfort inclined position or a sleeping position.
According to another aspect of the disclosure, the seat pan, the backrest and/or the leg rest are independently articulated with respect to each other and with respect to the base by each of the single levers such that the seat is positionable into at least one of a taxi, takeoff and landing position, a comfort inclined position or a sleeping position.
The taxi, takeoff and landing position of the seat is a position in which the backrest is in a substantial upright position with respect to the seat pan and/or the base. In particular, the backrest is in a position with an angle with respect to a vertical axis of about 3° to 12°. The leg rest is in a position with an angle with respect to the vertical axis of about 0° or less than 0°, for example -3° to -10°. The comfort inclined position of the seat is a substantial inclined position in which the backrest and/or the leg rest are in a substantial inclined position. In particular, the backrest is in a position with an angle with respect to the vertical axis of about more than 12° and less than 90°. The leg rest is in a position with an angle with respect to the vertical axis of about more than 0° and less than 85°.
The sleeping position of the seat is a position in which the backrest and/or the leg rest are in a substantial inclined position. In particular, the backrest is in a position with an angle with respect to the vertical axis of about 90°, in particular between 85° and 95°. The leg rest is in a position with an angle with respect to the vertical axis of about 45°, in particular between 40° and 50°.
In an exemplary embodiment, each of the single levers comprises two pivot points. In particular, a first pivot point is substantially connected in relation to the base structure, in particular to a floor or to a length adjuster, for example to a track mechanism, e.g. to an upper track.
In another exemplary embodiment, a second pivot point is substantially connected in relation to the seat pan frame. In particular, the second pivot point is substantially fixed to a lateral seat pan frame part.
According to a further aspect of the disclosure, each of the pivot points is provided by a recliner mechanism. For example, the recliner mechanism is configured as a rotary recliner or a ratchet recliner. In particular, the recliner mechanism is configured as a wobble drive mechanism.
According to an exemplary embodiment, the backrest is pivotably connected to the seat pan by at least one of a backrest pivot fitting in the backrest pivot axis. The leg rest is pivotably connected to the seat pan by at least one of a leg rest pivot fitting in the leg rest pivot axis.
Furthermore, a number of drive units are provided to independently adjust the backrest by driving at least one of the pivot fittings, for example a drive unit for the backrest pivot fitting, a drive unit for the leg rest pivot fitting and/or a drive unit for the recliner mechanism. In particular, a single drive unit is provided for each of the pivot fittings, the leg rest pivot fitting and the recliner mechanism.
According to a further aspect of the disclosure, a control unit is provided to independently control the drive units. The control unit is configured to control adjusting movement of at least one of the seat pan, the backrest or the leg rest. The control mechanism provided by the control unit allows that the seat is continuously adjustable in many positions, for example between the TTL position, comfort seating position and sleeping position.
In an exemplary embodiment, the backrest further comprises a shoulder support and/or a headrest. The backrest and the shoulder support are articulated with respect to each other by at least a shoulder support pivot fitting.
According to a further exemplary embodiment, the leg rest is adjustable in length. The length adjustment allows a customized length of the leg rest of different passengers.
In another exemplary embodiment, the seat is locked by a latch mechanism when the seat is in the taxi, takeoff and landing position. In particular, the latch mechanism is configured as a latch and a pawl wherein the latch is connected to the base structure, e.g. a track mechanism, a length adjuster or a floor, and the pawl is connected to lever, or vice versa. BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will become more fully understood from the detailed description given herein below and the accompanying drawings which are given by way of illustration only, and thus, are not limitative of the present invention, and wherein:
Figure 1 is a side view of an embodiment of a seat for a vehicle, in particular for an aircraft, with the seat being shown in a taxi, takeoff, and landing position,
Figure 2 is a side view of the seat showing in figure 1 with the seat being shown in a comfort seating position or limited reclined position,
Figure 3 is a side view of the seat showing in figure 1 with the seat being shown in a sleeping position,
Figure 4 is a perspective view of a seat with the seat being shown in a taxi, takeoff, and landing position and having an upholstery,
Figure 5 is a perspective view of a seat with the seat being shown in a taxi, takeoff, and landing position without an
upholstery and with a seat support structure,
Figures 6A to 6C are perspective views of the seat showing in figure 5 with the seat support structure covered by an upholstery or without an upholstery, Figures 7A to 7E are perspective views of the seat showing in figure 1 with a number of drive units,
Figure 8 is a perspective view of a seat mounted in a seat suite,
Corresponding parts are marked with the same reference symbols in all figures.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The figure 1 shows a side view of an embodiment of a seat 1 for a not further shown vehicle, in particular for an aircraft. The seat 1 is shown in a taxi, takeoff, and landing position, which is further described as TTL position P1 .
For a better understanding of subsequent descriptions of the seat 1 a coordinate system is shown in further figures. The coordinate system comprises a longitudinal axis x, a transverse axis y and a vertical axis z in relation to the aircraft.
The seat 1 comprises a seat pan 2, a backrest 3 and a leg rest 4. In the shown embodiment the backrest 3 comprises a shoulder support 3.1 . In one embodiment, the backrest 3 can comprise additionally or alternatively a headrest 3.2, wherein the backrest 3 shown in figure 1 comprises the headrest 3.2.
Further, the seat 1 comprises a seat support structure 5 which is connected to a base structure 6. In the shown embodiment the seat support structure 5 provides an upholstery U. In one embodiment, the upholstery U comprises at least one of a seat pan upholstery part, a backrest upholstery part and/or a leg rest upholstery part. Alternatively, the upholstery U is provided by an one-piece formed upholstered part. Further, the upholstery U can be at least partially attached to the seat support structure 5 by not further shown force-fitted, adhesive and/or form-fitted connection points.
In one embodiment, the force-fitted, adhesive and/or form-fitted connection can provide hook and loop fastener, clip, engage, snap-in and/or plug-in connection points. In another embodiment the upholstery U comprises a number of upholstered cover elements, wherein the seat support structure 5 can be covered by at least one upholstered cover element. In another example, the upholstery U and the seat support structure 5 can be at least partially bonded together.
The seat support structure 5 provides a seat pan frame 5.1 for the seat pan 2 with two lateral seat pan sides 5.1 .1 , 5.1 .2, wherein only one of the two lateral seat pan sides 5.1 .1 is shown in figure 1 . Additionally, the seat pan frame 5.1 , thereby the seat pan 2, comprise a front seat pan side 5.1 .3 and a back seat pan side 5.1 .4.
Further, the seat support structure 5 comprises a backrest frame 5.2 for the backrest 3 which is pivotably mounted to the back seat pan side 5.1 .4 at a backrest pivot axis PA1 (which is understood as an axis parallel to the transverse axis y).
Additionally, a leg rest frame 5.3 for the leg rest 4 is provided by the seat support structure 5, wherein the leg rest frame 5.3 is pivotably mounted to the front seat pan side 5.1 .3 at a leg rest pivot axis PA2 (which is
understood as an axis parallel to the transverse axis y). In particular, the leg rest 4 is configured as a calf rest. Moreover, the seat support structure 5 comprises a shoulder support and headrest frame 5.4 which is pivotably mounted to the backrest frame 5.2 at a shoulder support pivot axis PA5. For example, the backrest frame 5.2 and the shoulder support and headrest frame 5.4 are articulated with respect to each other by the shoulder support pivot axis PA5.
According to the disclosure, the backrest 3 and the leg rest 4 are articulated with respect to the seat pan 2 and the seat support structure 5 is articulated with respect to single levers 7, 8 such that the seat 1 is positionable into at least one of the TTL position P1 , a comfort inclined position P2 shown in figure 2 or a sleeping position P3 shown in figure 3.
Hence, the seat pan 2, the backrest 3, the leg rest 4 and/or the shoulder support 3.1 are articulated with respect to each other such that the seat 1 is positionable into at least one of the TTL position P1 , the comfort inclined position P2 and the sleeping position P3.
According to an exemplary embodiment, the backrest frame 5.2 is pivotably connected to the seat pan frame 5.1 by at least one of a backrest pivot fitting PF1 in the backrest pivot axis PA1 . The leg rest frame 5.3 is pivotably connected to the seat pan frame 5.1 by at least one of a leg rest pivot fitting PF2 in the leg rest pivot axis PA2. In particular, each of the pivot fittings PF1 , PF2 is provided by a recliner mechanism and thereby comprising recliner fittings.
The seat pan frame 5.1 is connected to the base structure 6 by the single levers 7, 8, wherein only one of the single levers 7 is shown in figure 1 . In particular, the single lever 7, 8 is provided by a swing arm mechanism. The base structure 6 provides a track mechanism for length adjustment of the seat 1 . Therefore, the track mechanism provides a length adjuster for the seat 1 .
The track mechanism provides a lower track 6.1 fixedly coupled to the aircraft floor F and an upper track 6.2 which is slidable coupled to the lower track 6.1 for a sliding movement in a longitudinal direction of the aircraft.
In the shown embodiment, the seat pan frame 5.1 is connected to the upper track 6.2 in a front region of the upper track 6.2. In particular, the seat pan frame 5.1 is pivotably connected to the upper track 6.2 on each of the two lateral seat pan sides 5.1 .1 , 5.1 .2. Therefore, the seat pan 2, the backrest 3 and the leg rest 4 are articulated with respect to each other and with respect to the base structure 6 by each of the single levers 7, 8. In particular, the backrest 3 and the leg rest 4 are pivotable with respect to the seat pan 2. The seat structure 5 with its components such as the seat pan 2, the backrest 3 and the leg rest 4 are articulated with respect to each other by electric-powered fittings PF1 to PF4' and with respect to the base
structure 6 by each of the single levers 7, 8.
Each of the single levers 7, 8 comprises two pivot points PA3, PA4 providing a first pivot point PA3 and a second pivot point PA4 (the pivot axes of the single lever pivot points PA3, PA4 are understood as axes parallel to the transverse axis y). In particular, the first pivot point PA3 is substantially connected in relation to the base structure 6, in particular to the floor F or to the track mechanism, especially to the upper track 6.2. Additionally, the second pivot point PA4 is substantially connected in relation to the seat pan frame 5.1 . In particular, the second pivot point PA4 is substantially fixed to each of the lateral seat pan sides 5.1 .1 , 5.1 .2.
Further, the second pivot point PA4 is provided in relation to the back seat pan side 5.1 .4. According to another embodiment, each of the single lever pivot
points PA3, PA4 is provided by a pivot fitting PF3, PF4, and recliner mechanism in particular. For example, the recliner mechanism is configured as a rotary recliner or a ratchet recliner or any other possible recliner mechanism. In particular, the recliner mechanism is configured as a wobble drive mechanism.
The TTL position P1 of the seat 1 is a position in which the backrest 3 is in a substantial upright position with respect to the seat pan 2, the base structure 6 as well as to the floor F. In particular, the backrest 3 is in a position with an angle with respect to the vertical axis z, especially of about 3° to 12°. The leg rest 4 is in a position with an angle with respect to the vertical axis z, especially of about 0° or less than 0°, for example -3° to -10°. Further, the single levers 7, 8 are in a position with an angle with respect to the vertical axis z of about -45°.
In the TTL position P1 the seat pan 2 of the seat 1 is positioned
substantially parallel to the base structure 6 as well as to the aircraft floor F.
In the shown embodiment, the seat pan 2 is slightly inclined with respect to the horizontal plane, wherein the front seat pan side 5.1 .3 is positioned higher than the back seat pan side 5.1 .4.
To control the adjustment of the seat 1 into at least one of the TTL position P1 , any one of the possible comfort inclined positions P2 or the sleeping position P3 a control unit 9 is provided to a passenger of the seat 1 to independently adjust the seat 1 into any one of the positions P1 to P3. In particular, the seat 1 is automatically driven into the TTL position P1 , any one of the possible comfort inclined positions P2 or the sleeping position P3 as desired by the passenger. For example, a sliding mechanism provided by the base structure 6, in particular by the track mechanism, is adjustable in the longitudinal direction. The seat 1 can be driven forwards or backwards, particularly depending on an aft or fore space of the seat 1 .
Further, the backrest 3 and the leg rest 4 are independently adjustable so that an inclination of those seat parts is configurable by actuating pivoting movements around one of the pivot axes PA1 , PA2.
Moreover, the seat pan 2 can be moved in the longitudinal direction and depending on a swiveling of the single levers 7, 8 in the vertical direction by actuating a pivoting movement of the single levers 7, 8 around the pivot points PA3, PA4.
In particular, the movement of the seat 1 and/or the seat pan frame 5.1 in the longitudinal direction is provided by the pivoting movement of the single levers 7, 8 around the first pivot point PA3. Additionally, the movement of the seat 1 and/or the seat pan frame 5.1 in the vertical direction is provided by the pivoting movement of the single levers 7, 8 around the first pivot point PA3.
Furthermore, an inclination adjustment of the seat pan 2 around an axis parallel to the transverse axis y is provided by the swiveling of the single levers 7, 8 around the pivot point PA4.
Hence, the single levers 7, 8 can be driven in a position with an angle with respect to the vertical axis z of about more an angle depending on a fore space of the seat 1 and less than an angle depending on an aft space of the seat 1 . Figure 2 is showing a side view of the seat 1 with the seat 1 being in one of many desirable comfort inclined positions P2.
The comfort inclined position P2 of the seat 1 is a substantial inclined position in which the backrest 3 and/or the leg rest 4 are in a substantial inclined position. In particular, the backrest 3 is in a position with an angle with respect to the vertical axis z of about more than 12° and less than 90°. The leg rest 4 is in a position with an angle with respect to the vertical axis z of about more than 0° and less than 85°. Further, the shoulder support 3.1 and/or the headrest 3.2 can be in a substantial inclined position. In particular, the shoulder support 3.1 and/or the headrest 3.2 can be in a position with an angle with respect to the vertical axis z of about more than 3° and less than 35°.
In the shown embodiment, the single levers 7, 8 are positioned with an angle with respect to the horizontal axis x of about 30°. The seat pan 2 is slightly inclined with respect to the horizontal plane, wherein the front seat pan side 5.1 .3 is positioned higher than the back seat pan side 5.1 .4. It is also possible to position the seat pan 2 parallel to the floor F as desired by the passenger.
Further, the base structure 6, in particular the lower and the upper tracks 6.1 , 6.2 are both positioned in the TTL position P1 . Alternatively, the upper track 6.2 can be positioned in the longitudinal direction, for example if the aft and/or fore space of the seat 1 provides enough space for the length adjustment of the seat 1 .
Figure 3 is showing a side view of the seat 1 with the seat 1 being in the sleeping position P3. The sleeping position P3 of the seat 1 is a position in which the backrest 3 and/or the leg rest 4 are in a substantial inclined position. In particular, the backrest 3 is in a position with an angle with respect to the vertical axis z of about 90°, in particular between 85° and 95°. The leg rest 4 is in a position with an angle with respect to the vertical axis z of about 45°, in particular between 40° and 50°. Further, the shoulder support 3.1 and/or the headrest 3.2 can be in a position with an angle with respect to the vertical axis z of about 90°, in particular between 85° and 95°.
In the shown embodiment, the seat 1 is in a completely elongated sleeping position P3, wherein the seat parts are positioned in a horizontal plane.
In figure 4 a side view of the seat 1 is shown with the seat 1 being in the TTL position P1 and having the upholstery U.
In the shown embodiment, the upholstery U is a single-piece upholstery U, in particular comprising a separated headrest cushion fixed to a headrest region of the upholstery U.
The aircraft floor F provides a number of fixation points 10 for mounting the base structure 6 of the seat 1 to the aircraft floor F. The base structure 6 comprises a base frame 1 1 having two lateral sides 1 1 .1 , wherein only one of the lateral sides 1 1 .1 is shown. Further, the base structure 6 comprises a front frame side 1 1 .2 and a back frame side 1 1 .3.
The lateral sides 1 1 .1 are fixedly secured to the floor F. Moreover, the front frame side 1 1 .2 and the back frame side 1 1 .3 are supported by a number of support rods 1 1 .4. For example, the support rods 1 1 .4 are provided to stabilize the base frame 1 1 against vibrations caused by the sliding movement of the track mechanism and/or caused by an operating aircraft. In the shown embodiment, the lower track 6.1 is fixedly mounted to the base frame 1 1 , in particular at two points each provided on one of the front frame side 1 1 .2 and the back frame side 1 1 .3. The lower track 6.1 is mounted parallel and next to the support rods 1 1 .4.
Figure 5 is a perspective view of one exemplary embodiment of the seat 1 with the seat 1 being shown in the TTL position P1 without the upholstery U and a more detailed view of the seat support structure 5. Further, the base structure 6 and the aircraft floor F are shown.
The seat support structure 5 provides the seat pan frame 5.1 , the backrest frame 5.2, the leg rest frame 5.3 and the shoulder support and headrest frame 5.4.
In one embodiment, the seat support structure parts are designed as welded tube frames, in particular made of a high-strength steel and/or any other possible alloys of metal and/or other elements, for example carbon. In another embodiment, the seat support structure parts are each made of a different material, for example depending on a determined stress and load level of each of the seat support structure parts.
The seat support structure 5 provides a number of support elements 12 connecting each of the lateral arranged sides of the seat support
structure 5. For example, the support elements 12 are designed as welded tube frames, in particular made of metal to stabilize the seat support structure 5 against mechanical vibrations.
The lateral arranged sides 5.4.1 , 5.4.2 of the shoulder support and headrest frame 5.4 are coupled to each other by one support element 12. The lateral arranged sides 5.2.1 , 5.2.2 of the backrest frame 5.2 are coupled to each other by two support elements 12. Moreover, the lateral seat pan sides 5.1 .1 , 5.1 .2 are coupled to each other by one support element 12 arranged in the front seat pan side 5.1 .3. In the shown embodiment, the lateral pan sides 5.1 .1 , 5.1 .2 are coupled to each other by a further support element 12 which is arranged in the back seat pan side 5.1 .4.
Further, the leg rest frame 5.3 provides two lateral arranged
sides 5.3.1 , 5.3.2 and two individual frame parts, wherein a front leg rest frame part 5.3.3 has a narrower shape than a back leg rest frame part 5.3.4. The front leg rest frame part 5.3.3 can be fixedly mounted to the back leg rest frame part 5.3.4, for example by a form-fitted, force-fitted and/or adhesive connection. Alternatively, the front frame part 5.3.3 and the back frame part 5.3.4 of the leg rest frame 5.3 can comprise the same shape, in particular the same width.
In the shown embodiment, the backrest pivot axis PA1 is defined by a connecting element 13 pivotably coupling the lateral arranged
sides 5.2.1 , 5.2.2 of the backrest frame 5.2 with the back seat pan side 5.1 .4.
Further, the leg rest pivot axis PA2 of the leg rest frame 5.3 is defined by another connecting element 14 pivotably coupling the lateral arranged sides 5.3.1 , 5.3.2 of the leg rest frame 5.3 with the front seat pan side 5.1 .3. In particular, the connecting elements 13, 14 are connecting links and/or rods.
The base structure 6 provides parallel arranged lower tracks 6.1 and parallel arranged upper tracks 6.2 slidable coupled to the lower tracks 6.1 . Further, the lower tracks 6.1 are mounted on the base frame 1 1 . Additionally, the base structure 6 provides the single levers 7, 8 which are connected to each other by at least one support element 12. In a possible embodiment, a number of support elements 12 are provided, wherein only a lower support element 12 is arranged between the levers 7 and 8. The lower support element 12 is provided in a region next to the first pivot points PA3 which are substantially connecting the single levers 7, 8 in relation to the base structure 6. At least one upper support element 12 is arranged between lateral seat pan sides 5.1 .1 and 5.1 .2.
In a further embodiment, another support element 12 is provided between each of the second pivot points PA4 of the single levers 7, 8 so that the single levers 7, 8 are substantially connected in relation to the seat pan frame 5.1 . For example, the support element 12 connecting the second pivot points PA4 provides a mechanical support to the seat pan frame 5.1 .
Moreover, the first pivot points PA3 of the single levers 7, 8 are coupled to each other and to the upper rail 6.2 by a connecting element 15, in particular a connecting link and/or rod.
Figures 6A to 6C are perspective views of the seat 1 showing in figure 5 with the seat 1 being in the TTL position P1 .
In each of the figures 6A and 6B the seat 1 is shown with the support structure 5 covered by the upholstery U. The seat support structure 5 is connected to the base structure 6, therefore to the aircraft floor F.
In figure 6C the seat 1 is shown with the seat support structure 5 and without the upholstery U. Further, the seat support structure 5 is connected to the base structure 6, therefore to the aircraft floor F. In the shown embodiment, a number of desirable pivot fittings PF1 to PF4' to adjust the inclination movements of the seat parts is shown. However, it should be understood that different types, features and/or designs of pivot fittings PF1 to PF4' are also possible for the exemplary embodiment.
According to the shown embodiment, each of the pivot fittings PF1 to PF4' provides a recliner mechanism having an increased load-bearing capacity. Thereby, absorption of force in an event of an accident is increased.
For example, the recliner mechanism provides one of shown continuous or continuous disc rediners R1 to R2'. In particular, the continuous disc rediners R1 , R1 ' can provide a load-bearing capacity of about 2000Nm. Further, the continuous disc rediners R2, R2' can provide a load-bearing capacity of about 2500Nm.
In addition, each of the continuous disc rediners R1 , R2 can be driven by a drive unit D coupled to those rediners R1 , R2. For example, the drive unit D provides a power drive and/or a so-called ferrite motor or a rare earth motor, in particular a ferrite magnet motor or a rare earth magnet electric motor. It should be understood that any other appropriate motors can be provided in the drive unit D to adjust the inclination movements of the pivot fittings PF1 to PF4'. Therefore, the independent adjustment of the movements of at least one of the seat pan 2, the backrest 3 or the leg rest 4 is provided.
In another embodiment, the recliner mechanism provided by the pivot fittings PF1 to PF4' can provide one of shown pawl and sector disc rediners R3 to R3". In particular, one of the pawl and sector disc
rediners R3 to R3" can provide a load-bearing capacity of about 2000Nm, another one providing a load-bearing capacity of about 2500Nm and a third one providing a load-bearing capacity of about 4000Nm. Moreover, a recliner interface using one welding geometry for the pivot fittings PF1 to PF4' and for each load class can be achieved. Furthermore, the seat 1 is continuously adjustable in many positions due to the
application of the continuous disc recliners R1 to R2' and/or the pawl and sector disc recliners R3 to R3".
In a further embodiment, each of the pivot fittings PF1 to PF4' can comprise not further shown flexible elements, in particular spring elements, for example recoil springs. Thus, a drive performance can be reduced by the arrangement of the flexible elements at fixed pivots of the pivot
fittings PF1 to PF4'.
Figures 7A to 7E are perspective views of the seat 1 showing in figure 1 without the upholstery U and with a number of drive units D1 to D8. The seat 1 is positioned in one of the many possible comfort inclined
positions P2.
The number of drive units D1 to D8 is provided to independently drive the frame parts of the seat support structure 5 and at least one of the pivot fittings PF1 to PF5.
In the shown embodiment, each of the drive units D2 to D8 are connected to each of the connecting elements 13 to 17 to independently drive the pivot fittings PF1 to PF5.
For example, a single drive unit D1 is provided for the shoulder support pivot fitting PF5 and drive units D2, D3 are provided for the backrest pivot fittings PF1 , PF1 '. Further, drive units D4, D5 are provided for the single lever second pivot fittings PF4, PF4' to adjust the inclination movement of the seat pan frame 5.1 .
Moreover, two drive units D6, D6' are provided for the single lever first pivot fittings PF3, PF3' to adjust the movement in the longitudinal direction and in the vertical direction of the seat pan frame 5.1 .
Single drive unit D7 is provided for the leg rest pivot fittings PF2, PF2'. In the shown embodiment, the leg rest pivot fittings PF2, PF2' provides two drive units D7, D7' and a single drive unit D8 is provided for the leg rest frame 5.3 which is, as shown in the embodiment, adjustable in length.
Therefore, the leg rest frame 5.3 comprises an adjustable, in particular extendable and retractable, second leg rest frame 5.3'. The length adjustment allows a customized length of the leg rest frame 5.3 of different passengers.
Further, the control unit 9 is provided to independently control the drive units D1 to D8.
Figure 7B shows the length adjustable leg rest frame 5.3 comprising the second leg rest frame 5.3' being in a retracted position, the connecting element 17 providing the drive unit D8 for length adjustment of the second leg rest frame 5.3'.
Further, each of the figures 7C to 7E shows a detailed view of the length adjustable leg rest frame 5.3 with the second leg rest frame 5.3' being in an extended position and comprising the connecting element 17 providing the drive unit D8 for length adjustment of the second leg rest frame 5.3'.
Figures 7D and 7E are enlarged section views of the leg rest frame 5.3 and the second leg rest frame 5.3' showing in figure 7C. Figure 8 shows a perspective view of the seat 1 mounted in a seat suite S.
The seat 1 is positioned in the TTL position P1 having an occupant O sitting in the upholstered seat 1 .
The seat suite S is for example a private and individual seat cabin arranged in an aircraft cabin to provide privacy. The seat suite S is fixedly attached to the aircraft floor F.
LIST OF REFERENCES seat
seat pan
backrest
shoulder support
headrest
leg rest
seat support structure
seat pan frame
lateral seat pan side
front seat pan side
back seat pan side
backrest frame
lateral arranged side
leg rest frame
lateral arranged side
front leg rest frame part
back leg rest back frame part shoulder support and headrest frame lateral arranged side
base structure
track
single lever
control unit
fixation point
base frame
lateral side
frame side
support rod
support element 13 to 17 connecting element x, y, z axis
D to D8 drive unit
F floor
O occupant
P1 to P3 TTL, comfort and sleeping position
PA1 , PA2 pivot axis
PA3, PA4 pivot point
PA5 pivot axis
PF1 to PF4' pivot fitting
U upholstery
R1 to R2' continuous disc recliners
R3 to R3" pawl and sector disc recliners
S seat suite

Claims

1 . A seat (1 ) for a vehicle, in particular for an airplane, comprising:
- a seat support structure (5) which is connected to a base
structure (6), wherein the seat support structure (5) provides
- a seat pan (2) having a seat pan frame(5.1 ) with two lateral seat pan sides (5.1 .1 , 5.1 .2), a front seat pan side (5.1 .3) and a back seat pan side (5.1 .4),
- a backrest (3) having a backrest frame (5.2) which is pivotably mounted to the back seat pan side (5.1 .4) at a backrest pivot axis (PA1 ),
- a leg rest (4) having a leg rest frame (5.3) which is pivotably mounted to the front seat pan side (5.1 .3) at a leg rest pivot axis (PA2),
- wherein the seat support structure (5) is pivotably connected to the base structure (6) by a single lever (7, 8) on each of the two lateral seat pan sides (5.1 .1 , 5.1 .2), and
- wherein the backrest (3) and the leg rest (4) are articulated with respect to the seat pan (2) and the seat support structure (5) is articulated with respect to the single levers (7, 8) such that the seat (1 ) is positionable into at least one of a taxi, takeoff and landing
position (P1 ), a comfort inclined position (P2) or a sleeping
position (P3).
2. The seat (1 ) according to claim 1 , wherein a movement in a
longitudinal direction and a vertical direction of the seat support structure (5) in relation to the base structure (6) is provided by at least a movement of the single levers (7, 8).
3. The seat (1 ) according to claim 1 or 2, wherein the movement of the seat support structure (5) and/or the seat pan frame (5.1 ) is provided by a pivoting movement of the single levers (7, 8) around a transverse axis (y).
4. The seat (1 ) according to at least any of the preceding claims,
wherein each of the single levers (7, 8) comprises two pivot points (PA3, PA4), wherein a first pivot point (PA3) is substantially connected in relation to the base structure (6) and a second pivot point (PA4) is substantially connected in relation to the seat pan frame (5.1 ).
5. The seat (1 ) according to any one of the preceding claims, wherein the movements of the seat (1 ) and/or the seat pan frame (5.1 ) in the longitudinal direction and in the vertical direction is provided by a pivoting movement of the single levers (7, 8) around the first pivot point (PA3).
6. The seat (1 ) according to any one of the preceding claims, wherein an inclination adjustment of the seat pan frame (5.1 ) is provided by a pivoting movement of the single levers (7, 8) around the pivot point (PA4).
7. The seat (1 ) according to the claim 4 or 5, wherein the second pivot point (PA4) is provided in the area of the back seat pan side (5.1 .4).
8. The seat (1 ) according to at least any one of the preceding claims 4 to 7, wherein the single levers (7, 8) are coupled to each other by at least one of the first pivot point (PA3) and/or the second pivot point (PA4) by a support element (12).
9. The seat (1 ) according to at least any one of the preceding claims, wherein the seat support structure (5) is connected to a floor (F) by the base structure (6), and wherein the base structure (6) provides at least a track mechanism for length adjustment of the seat support structure (5).
10. The seat (1 ) according to any one of the preceding claims, wherein the first pivot point (PA3) of each of the single levers (7, 8) is substantially connected in relation to an upper track (6.2) slidable coupled to a fixed lower track (6.1 ) of the track mechanism.
1 1 . The seat (1 ) according to at least any one of the preceding claims, wherein each of the pivot points (PA3, PA4) is provided by a recliner mechanism.
12. The seat (1 ) according to claim 1 1 , wherein the recliner mechanism is configured as a wobble drive mechanism.
13. The seat (1 ) according to at least any one of the preceding claims, wherein the backrest (3) is pivotably connected to the seat pan (2) by at least one of a backrest (3) pivot fitting (PF1 ) in the backrest pivot axis (PA1 ).
14. The seat (1 ) according to at least any one of the preceding claims, wherein the leg rest (4) is pivotably connected to the seat pan (2) by at least one of a leg rest pivot fitting (PF2) in the leg rest pivot axis (PA2).
15. The seat (1 ) according to at least any one of the preceding claims, wherein a number of drive units (D to D8) are provided to
independently drive the backrest pivot fitting (PF1 ), the leg rest pivot fitting (PF2) and the recliner mechanism.
16. The seat (1 ) according to claim 15, wherein a control unit (9) is provided to independently control the drive units (D to D8).
17. The seat (1 ) according to claim 16, wherein the control unit (9) is configured to control adjusting movement of at least one of the seat pan (2), the backrest (3) or the leg rest (4).
18. The seat (1 ) according to at least any one of the preceding claims, wherein the backrest (3) further comprises a shoulder support (3.1 ) and/or a headrest (3.2).
19. The seat (1 ) according to at least any one of the preceding claims, wherein the backrest (3) and the shoulder support (3.1 ) are articulated with respect to each other by at least a shoulder support pivot fitting (PF5).
20. The seat (1 ) according to at least any one of the preceding claims, wherein the leg rest (4) is adjustable in length.
21 . The seat (1 ) according to any one of the preceding claims, wherein the seat support structure (5) provides an upholstery (U) which is arranged on the seat pan (2), the backrest (3) and the leg rest (4).
PCT/EP2017/057891 2017-04-03 2017-04-03 A seat for a vehicle WO2018184660A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/057891 WO2018184660A1 (en) 2017-04-03 2017-04-03 A seat for a vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/057891 WO2018184660A1 (en) 2017-04-03 2017-04-03 A seat for a vehicle

Publications (1)

Publication Number Publication Date
WO2018184660A1 true WO2018184660A1 (en) 2018-10-11

Family

ID=58464578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/057891 WO2018184660A1 (en) 2017-04-03 2017-04-03 A seat for a vehicle

Country Status (1)

Country Link
WO (1) WO2018184660A1 (en)

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FR3092285A1 (en) * 2019-01-31 2020-08-07 Renault S.A.S. Motor vehicle seat with motorized reversible backrest
US20210107387A1 (en) * 2019-10-14 2021-04-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Sitting concept for autonomous driving with increased comfort aspects in a sandwich construction
CN112757975A (en) * 2021-01-23 2021-05-07 周如国 Easily adjust and sit horizontal new energy automobile seat

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CN112757975A (en) * 2021-01-23 2021-05-07 周如国 Easily adjust and sit horizontal new energy automobile seat

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