Seat, in particular vehicle seat

Abstract

The invention relates to a seat (S), in particular a vehicle seat (100), comprising at least one seat structure (400) and an adjusting device (500) with at least one pivot mechanism (200) for pivoting the seat structure (400) about a pivot axis (502), the seat structure (400) comprising at least one seat frame (122A) and a seat housing (124) pivotably mounted on the seat frame (122A), the pivot mechanism (200) is coupled to the seat structure (400) and is designed to move the seat frame (122A) about a pivot axis (502) and to move the seat housing (124) relative to the seat frame and in a pivot direction (R1, R2) opposite to the pivot direction (R1 ', R2') of the seat frame (122A) depending on the pivot direction (R1 ', R2') of the seat frame (122A).

Description

Technical Field

[0001] The invention relates to a seat, in particular to a vehicle seat. Background Art

[0002] Adjustable vehicle seats are known in the prior art, such as reclining seats, which can be actuated so that when the seat surface is adjusted, the backrest also moves together. However, the movement of the backrest and the seat surface can produce a relative movement of the occupant. This relative movement is called "shirt shearing", for example, describing the sliding movement of the surface or front of the backrest relative to the occupant. In traditional seats, there is a rotating assembly at the bottom of the backrest, and the backrest rotates backwards around the rotating assembly. When the backrest rotates backwards, a relative movement occurs between the backrest surface and the back of the occupant, which may cause clothing to be sheared. In the case of reclining adjustment mechanisms, if the seat is inclined and / or the occupant is inclined, the contact between the seat (especially the seat surface) and the occupant's thighs may also be lost. In addition, during the seat reclining adjustment process, the contact between the seat (especially the backrest and / or the headrest) and the occupant's occipital bone and / or shoulders may be lost, as a result of which the occupant is forced to adopt a forward-pointing head posture and / or a forward-leaning body posture when moving in order to maintain a line of sight to the road. Summary of the invention

[0003] Purpose

[0004] The object of the present invention is to improve seats, in particular vehicle seats of the type mentioned at the outset, and in particular to provide a seat which is adjustable in space (e.g. reclining), wherein at least the seat surface is in constant contact with the thighs of an occupant, and to provide a seat in which the backrest is in essentially permanent contact with the torso of the occupant when the seat is tilted and / or reclined in space.

[0005] accomplish

[0006] In a first exemplary embodiment, this object is achieved according to the invention by a seat, in particular a vehicle seat, comprising at least one seat structure and an adjustment device having at least one pivot mechanism for pivoting the seat structure about a pivot axis, wherein the seat structure comprises at least one seat frame and a seat shell pivotably mounted on the seat frame, wherein the pivot mechanism is coupled to the seat structure and is designated to move the seat frame about the pivot axis and, depending on the pivot direction of the seat frame, to move the seat shell relative to the latter (seat frame) and in a pivot direction opposite to the pivot direction of the seat frame.

[0007] The advantage achieved by the invention is that a seat, in particular a vehicle seat, can be provided with a seat frame, wherein the seat frame is designed to be freely tiltable, inclineable or pivotable in space and has at least one seat shell, which can be moved relative to the seat frame, for example tiltable, inclineable or pivotable, so that the seat shell can follow the leg movements of a person sitting on the seat. Due to the pivotable connection of the seat shell to the seat frame, comfort, for example sitting comfort and / or lying comfort, is ergonomically enhanced and the sitting and / or lying body posture is improved. The seat can be adjusted so that the body parts of the person sitting on the seat (also called the occupant) are adequately ergonomically supported or remain at rest.

[0008] Furthermore, a pivoting of the seat shell in a pivoting direction opposite to a pivoting direction of the seat frame advantageously enables the occupant to maintain the same heel point relative to the floor, in particular the vehicle floor, during seat adjustment.

[0009] Furthermore, pivoting of the seat shell in a pivoting direction opposite to the pivoting direction of the seat frame advantageously enables the occupant to maintain continuous contact with the seat structure over a larger area of ​​the occupant's body, for example the occupant's torso is in contact with the backrest surface and the occupant's rear is in contact with the seat surface. The seat surface and the backrest surface may be part of an integrally formed seat structure. The seat structure may, for example, comprise at least one seat surface structure and / or one backrest surface structure, hereinafter also referred to as backrest structure. The continuous contact between the occupant's body and the seat structure prevents any relative movement between the body (e.g. the back) and the backrest surface and / or between the rear part and the seat surface and optionally the backrest surface, thereby avoiding, for example, so-called "shirt shearing".

[0010] Furthermore, the pivoting of the seat shell in a pivoting direction opposite to the pivoting direction of the seat frame makes it possible for the occupant to benefit that the center line of the seat structure, in particular the center line from the backrest surface or the backrest, respectively, can change when the seat structure is adjusted in space (e.g. pivoted, tilted or tilted), thereby supporting the lumbar lordosis of the occupant. The change in the seat contour in combination with the pivoting of the seat shell, for example in the form of a frontal bolster, has the effect of providing a natural support for his / her lumbar lordosis during the pivoting of the seat structure.

[0011] The seat frame can be designed as an additional seat shell. In other words: the seat structure can include at least one seat surface structure, which has a first seat shell and a second seat shell pivotably mounted on the first seat shell, and at least one pivot mechanism for pivoting the seat surface structure about a pivot axis or relative to a floor, in particular a vehicle floor, respectively, wherein the pivot mechanism is designed to pivot the second seat shell in the opposite direction when the first seat shell is pivoted.

[0012] For example, the second seat shell is arranged in a front shell region of the first seat shell when viewed in the longitudinal direction.

[0013] Since the second seat shell is mounted on the first seat shell and pivots in the opposite direction when the first seat shell pivots, the seat surface structure can follow the leg movement of the occupant, thereby ensuring constant contact between the occupant's thighs and the seat surface. Pivoting (e.g. tilting or rolling) of the second seat shell (e.g. the front seat shell) enables the occupant to maintain a heel point in each seat position. As a result, the seat comfort and body posture of the occupant can be improved during and after seat adjustment.

[0014] The rear region of the seat shell can have a fulcrum which is mounted on the seat frame, wherein pivoting the seat shell about the fulcrum results in a change in the spacing of the front region of the seat shell relative to the seat frame.

[0015] The fulcrum of the seat shell can be arranged at least in the region of the pivot axis of the seat frame. For example, the rotation axis of the seat shell defined by the fulcrum can extend to be offset or spaced apart from the pivot axis of the seat frame so as to be parallel to the pivot axis of the seat frame. Alternatively, the rotation axis and the pivot axis can be arranged to overlap each other.

[0016] The pivot mechanism can be designed so that the pivot mechanism moves the seat frame around an imaginary pivot axis extending transversely to the pivot direction of the seat frame. The imaginary pivot axis can be understood as, for example, a fictitious virtual pivot axis. Due to the pivot mechanism, the seat frame can be pivoted largely independently of the coupling point between the pivot mechanism and the seat frame. This can provide the advantage that the seat structure can be designed to pivot freely in space, thereby achieving an ergonomic movement sequence, thereby improving comfort. The pivot axis can be aligned in such a way that the position of the hip joint or hip joint, respectively, always remains above the pivot axis and optionally remains on a common imaginary line. The advantage of the present invention is that an integral seat is provided and the conventional assembly between the seat surface and the backrest is omitted. The seat can be designed in particular to have a reduced weight and reduced components. The entire seat can be pivoted in space, whereby an upper body angle of up to 45° can be achieved by the rotatably mounted seat shell and the subordinate pivoting of the latter (seat shell) relative to the seat frame. The seat shell can be rotated downward or upward around the fulcrum while the seat frame pivots in space. This ensures that the lower limbs, such as the legs of the occupant, can be ergonomically pivoted together around the anatomical hip joint. In the process, the angle between the thigh and the trunk can be ergonomically increased or decreased, thereby achieving a neutral posture and, for example, relieving the lumbar spine.

[0017] The seat shell may be a leg support. The seat shell may be designed as a trim shell or a cushion shell. The seat shell may rotate about an axis of rotation located just below the anatomical hip joint and / or about the anatomical axis of rotation of the latter (anatomical hip joint) and / or slightly before or after the position of the ischial tuberosity of the occupant. For example, the axis of rotation or fulcrum of the seat shell may extend primarily through the center or center area of ​​the hip joint rotation.

[0018] The pivot mechanism can comprise at least one front link and at least one rear link, which in each case connect the seat frame to a fixed base frame, wherein the front link or the rear link has at least two link arms, also known as swing arms or lever arms, which can be adjusted at a certain angle relative to each other in order to pivot the seat frame.

[0019] Furthermore, at least one first drive unit can be provided which is designated for pivoting the seat frame during operation, wherein the first drive unit has at least one connection point fixed to the seat frame, in particular a positionally fixed connection point, and a connection point connected to the pivot mechanism and mounted rotatably. The drive unit can be fastened to a crossbar of the seat frame via its fixed connection point. The drive unit can be connected to one of the link arms of the rear link or the front link via its rotatably mounted connection point.

[0020] Furthermore, at least one second drive unit can be provided, which during operation is designated to pivot the seat shell relative to the seat frame, wherein the drive unit has at least one connection point fixed to the seat shell, in particular a positionally fixed connection point, and a connection point rotatably mounted on the seat frame, or vice versa. The drive unit can be rotatably mounted on a crossbar of the seat frame via its connection point. The drive unit can be fastened to the underside via its fixed connection point, for example to a bracket arranged on the underside or a holding arm of the seat shell.

[0021] Furthermore, at least one third drive unit may be provided for adjusting the height of the seat frame relative to the base, wherein the third drive unit has at least one connection point fixed to the base, in particular a positionally fixed connection point, and a rotatably mounted connection point connected to the pivot mechanism. The drive unit can be fastened to the base frame via its fixed connection point. The drive unit can be connected to one of the connecting rods via its rotatably mounted connection point.

[0022] The drive units, in particular at least the first drive unit and the second drive unit, can be operated synchronously. For example, adjustment movements of the drive units can be synchronized. For example, a synchronization device and / or a suitable control unit can be provided, which can be connected to the drive units in each case for issuing signals. In the synchronized state of the drive units, i.e. the synchronized state of at least the first and second drive units, the adjustment movements of the drive motors of the drive units can be synchronized. The third drive unit can be operated independently and / or synchronized with the other two drive units. In the adjusted seat position, the second drive unit can also be operated independently of the first drive unit.

[0023] The adjustment means may comprise at least one height adjustment mechanism connected to a pivot mechanism, and / or a longitudinal adjustment device.

[0024] In a second exemplary embodiment, the object is achieved according to the invention by a seat comprising at least one seat structure, for example a backrest structure, having a first backrest shell, for example a backrest frame, and a second backrest shell, for example a trim shell and / or a backrest support shell, which is pivotably mounted on the first backrest shell, and at least one pivot mechanism for pivoting the seat structure, in particular the backrest structure, about a pivot axis, wherein the pivot mechanism is coupled to the backrest structure and is designated to pivot the second backrest shell relative to a front plane of the first backrest shell and / or to move the first backrest shell about the pivot axis and, depending on the pivot direction of the first backrest shell, to move the second backrest shell relative to the first backrest shell and to pivot in a pivot direction opposite to the pivot direction of the first backrest shell. The lower region of the second backrest shell can have a fulcrum, which is mounted on the first backrest shell, in particular on the backrest frame, wherein the pivoting of the second backrest shell about the fulcrum results in a change in the spacing of the upper region of the second backrest shell relative to the first backrest shell.

[0025] A headrest structure coupled to the backrest structure may optionally be provided in addition. For example, the headrest structure may be connected to the second backrest shell and pivotally mounted on the first backrest shell. The upper region of the second backrest shell may be configured with the headrest structure. For example, the headrest structure may be fixedly connected to the upper region of the second backrest shell. The upper region of the second backrest shell may be configured with at least one headrest decoration. Alternatively or optionally in addition, the headrest structure and the second backrest shell may be formed integrally. A pivot mechanism may be specified to pivot the second backrest shell and the headrest structure relative to the front plane of the first backrest shell.

[0026] At least one drive unit can be provided which, during operation, is designated to pivot the second backrest shell relative to the first backrest shell, wherein the first drive unit has at least one, in particular positionally fixed, connection point, which is fixed to the second backrest shell, and a rotatably mounted connection point, which is connected to the first backrest shell.

[0027] For example, the second backrest shell is located in the upper shell region of the first backrest shell, viewed in the vertical direction.

[0028] Since the second backrest shell can be pivoted relative to the front plane of the first backrest shell, the seat surface structure can follow the legs of the occupant sitting on the seat. This continuous contact with the backrest prevents relative movement between the occupant's back and the backrest, thus avoiding sliding movements (shirt shear) between the seat and the occupant.

[0029] A seat, in particular a vehicle seat, can provide a combination of the features of the exemplary embodiments described above, in which the backrest centerline varies so that the lumbar lordosis of the occupant can be supported when the seat is tilted and / or reclined in space. The movement profile generated by the adjustable backrest shell in combination with the tilting of the seat shell, in particular the tilting of the second seat shell, in particular in the form of a front bolster, has the advantage that the occupant feels a natural support of his lumbar lordosis and thighs during and after the seat adjustment.

[0030] In summary, in other words, the invention provides a seat, in particular a vehicle seat, in which, in every seat position of the seat, the position of the heel point relative to the vehicle floor, the position of the head and the position of the shoulders relative to the road surface as well as a suitable chest posture or upper body posture can be maintained. Furthermore, any unintentional hunchback can be reduced. Furthermore, the seat according to the invention can adopt a suitable hip angle and a neutral back posture. In the event of an accident, the seat can quickly adopt a so-called pre-crash position, for example by means of a small adjustment travel and / or track travel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The invention is described in more detail below by means of advantageous exemplary embodiments shown in the drawings. However, the invention is not limited to these exemplary embodiments. In the drawings:

[0032] Figure 1 A vehicle seat with a longitudinal adjustment device according to the prior art is shown in schematic form;

[0033] Figure 2 shows a side view of a seat according to the invention, in particular a vehicle seat, according to a first exemplary embodiment, wherein the seat comprises at least one seat surface structure and a backrest structure and is in a first seat position;

[0034] Figure 3Shown according to Figure 2 A side view of the seat in a second seating position;

[0035] Figure 4 Shown according to Figure 2 A side view of a seat having a headrest structure, wherein the seat is in a first seat position;

[0036] Figure 5 Shown according to Figure 4 A side view of the seat in a second seating position;

[0037] Figure 6 Shown according to Figure 4 A side view of the seat in the third seating position;

[0038] Figure 7 Shown according to Figure 4 A side view of the seat in the fourth seating position;

[0039] Figure 8 A perspective view of a seat surface structure of a seat, in particular a vehicle seat, is shown, the seat having a pivot mechanism for pivoting the seat surface structure;

[0040] Fig. 9 Shown according to Figure 8 A perspective view of a seat surface structure;

[0041] Fig.10 Shown according to Figure 8 A lower perspective view of a seat surface structure;

[0042] Fig.11 Shown according to Figure 8 An exploded view of the seat surface structure;

[0043] Fig.12 shows a side view of a seat, in particular a vehicle seat, according to a second exemplary embodiment, wherein the seat comprises at least a seat surface structure, a backrest structure and a headrest structure and is in a first seat position;

[0044] Fig.13 Shown according to Fig.12 A side view of the seat in the middle position;

[0045] Fig.14 Shown according to Fig.12 A side view of the seat in a second seating position;

[0046] Fig.15 Shown according to Fig.12 Side view of the seat in a comfortable position;

[0047] Fig.16 Shown according to Fig.12 A side view of the seat in a first seating position;

[0048] Fig.17 showing a perspective rear view of a backrest structure and a headrest structure fastened to the backrest structure;

[0049] Fig.18 Shown according to Fig.17 A rear perspective view of the backrest structure and the headrest structure in a first backrest position; and

[0050] Fig.19 Shown according to Fig.17 A perspective rear view of the backrest structure and the headrest structure in the second backrest position.

[0051] Equivalent parts in all figures have the same reference numerals. DETAILED DESCRIPTION

[0052] The following will use three mutually perpendicular spatial directions to describe Figure 1 Schematically shown in the prior art vehicle seat 100. When the vehicle seat 100 is installed in a vehicle, the longitudinal direction x extends substantially horizontally and preferably parallel to the longitudinal direction of the vehicle, which corresponds to the usual driving direction of the vehicle. The transverse direction y extending perpendicularly to the longitudinal direction x is also aligned horizontally in the vehicle and extends parallel to the transverse direction of the vehicle. The vertical direction z extends perpendicularly to the longitudinal direction x and perpendicularly to the transverse direction y. When the vehicle seat 100 is installed in a vehicle, the vertical direction z preferably extends parallel to the vertical axis of the vehicle.

[0053] The position and direction indications used, such as front, rear, upper and lower, relate to the direction of sight of an occupant 1 seated in the vehicle seat 100 in the normal seating position, the vehicle seat 100 being installed in a vehicle in a use position suitable for occupant transportation, with the backrest 104 upright and conventionally oriented in the direction of travel. However, the vehicle seat 100 can also be installed or moved in a different orientation, such as transverse to the direction of travel. Unless otherwise specified, the vehicle seat 100 is configured to be mirror-symmetrical with respect to a plane extending perpendicular to the transverse direction y.

[0054] The backrest 104 can be pivotably arranged on the seat part 102 of the vehicle seat 100. To this end, the vehicle seat 100 can optionally include a fitting 106, in particular an adjustment fitting, a swivel fitting, a latch fitting or a flip fitting.

[0055] Position and direction designations used, such as radial, axial and circumferential, are for example related to the rotation axis 108 of the fitting 106. Radial means perpendicular to the rotation axis 108. Axial means in the direction of the rotation axis 108 or parallel thereto.

[0056] The vehicle seat 100 may optionally include a longitudinal adjustment device 110. The longitudinal adjustment device 110 includes, for example, a track assembly 112 having a first track element 114 and a second track element 116. The first track element 114 is adjustable relative to the second track element 116 in the longitudinal direction x. The first track element 114 is fastened to the seat part 102. The first track element 114 is, for example, an upper track or a slide rail. The second track element 116 is fastened to a structural element of the vehicle, for example, a vehicle floor. The second track element 116 is, for example, a lower track or a floor track.

[0057] Figure 2 A side view of a seat S according to the invention, in particular a vehicle seat 100 according to a first exemplary embodiment, is shown, wherein the seat S comprises a seat structure 400, which is formed, for example, by a frame component. The seat S, in particular the seat structure 400, comprises at least one seat surface structure 120 for forming a seat component 102, and a backrest structure 140 for forming a backrest 104, and is in a first seat position P1. The first seat position P1 may be a driving position and / or an initial position. The seat S may be adjusted between a plurality of seat positions, a comfort position and / or an intermediate position.

[0058] The seat surface structure 120 includes a first seat shell 122. The first seat shell 122 can form, for example, a main body or matrix of the seat portion 102. In the exemplary embodiment shown, the first seat shell 122 forms a seat frame 122A. In addition, the seat surface structure 120 includes a second seat shell 124, which is pivotally mounted on the first seat shell 122. The second seat shell 124 can be a front shell, which can be arranged in the front shell area of ​​the first seat shell 122. The second seat shell 124 can be designed to be shorter than the first seat shell 122. The length of the second seat shell 124 can be half of the total length of the first seat shell 122. The second seat shell 124 can be used to support the thighs of the occupant I. The second seat shell 124 can be arranged in the front half of the first seat shell 122 and can be pivotally mounted on the latter (the first seat shell).

[0059] The seat S comprises an adjustment device 500 having at least one pivot mechanism 200 for pivoting the seat structure 400 about a pivot axis 502. The pivot mechanism 200 is designed such that the pivot mechanism 200 moves the seat frame 122A about a virtual pivot axis 502 extending transversely to the pivot directions R1', R2' (hereinafter also referred to as directions R1', R2') of the seat frame 122A.

[0060] For example, the seat structure 400, such as the seat surface structure 120, comprises a first pivot mechanism 200 for pivoting the seat surface structure 120, wherein the pivot mechanism 200 is designated to pivot the second seat shell 124 in the opposite direction R1, R2, in particular in the pivot direction R1, R2, when the first seat shell 122 pivots in the direction R1', R2'. The first seat shell 122 can pivot in the first direction R1' and the second direction R2' around the fulcrum D1. When the seat shell 122 pivots in the first direction R1', the second seat shell 124 pivots in the direction R2 opposite to the first direction R1'. The fulcrum D1 is in particular an imaginary, imaginary or virtual fulcrum D1. When the seat shell 122 pivots in the second direction R2', the second sheet shell 124 pivots in the direction R1 opposite to the second direction R2'. The seat shells 122, 124 can be cushion shells or seat cushion shells.

[0061] The seat surface structure 120 and the backrest structure 140 may be integrally formed. For example, the first seat shell 122 may be integrally formed with the backrest structure 140. The first seat shell 122 and the backrest structure 140 may form a common seat surface and backrest surface.

[0062] In the proposed invention, this is a vehicle seat 100 that can adapt to people of various body types through a combination of vertical adjustment and longitudinal adjustment in order to actively drive a vehicle. The vehicle seat 100 does not have to be designed in a conventional manner, with a fitting 106 that connects the seat portion 102 to the backrest 104. The entire vehicle seat 100 according to the present invention can be adjusted in space, such as tilting or tilting, to achieve an upper body angle of up to 45°. Simultaneously with the rotational movement (particularly tilting movement) of the first seat shell 122 in space, the second seat shell 124 rotates downward around the fulcrum D1, which enables the lower limbs to pivot around the anatomical hip joint. As a result, the angle between the thigh and the trunk can be increased (e.g., up to 135°), thereby achieving a neutral posture and reducing the pressure on the lumbar spine.

[0063] The first seat shell 122 can rotate around an imaginary rotation axis (particularly the pivot axis 502) defined by a fulcrum D1, located just below the anatomical rotation axis or hip joint, slightly in front of the ischial tuberosity. Ideally, the rotation axis should extend exactly through the hip joint rotation center.

[0064] During the rotational movement, the relative movement between the upper body of the occupant I and the backrest 104, or the relative movement between the occupant I and the headrest 118 shown in the additional figures is thus greatly reduced or even avoided.

[0065] Figure 3 Shown according to Figure 2The seat S is in a side view of the second seat position P2. The second seat position P2 can be a comfortable position such as leaning back or tilting sideways.

[0066] Figure 4 A side view of a seat S is shown, which has a headrest structure 180 for forming the headrest 118 and mounted on the backrest structure 140 . The seat S is in a first seat position P1 . The headrest structure 180 is arranged on the upper side of the backrest structure 140 .

[0067] Figure 5 Shown according to Figure 4 Side view of the seat S in the second seat position P2.

[0068] Figure 6 A side view of the seat S in the third seat position P3 is shown. In the third seat position P3, the seat S can be adjusted downwards in the vertical direction z, in particular in height. The adjustment device 500 can include a height adjustment mechanism 600 connected to the pivot mechanism 200. The adjustment device 500 can also include a longitudinal adjustment mechanism, in particular a longitudinal adjustment device 110. For example, the pivot mechanism 200 can be designed to move the seat S about the fulcrum D1 and in the vertical direction z. The pivot mechanism 200 can be a combined tilt and height adjuster.

[0069] Figure 7 Shown according to Figure 6 The seat S is in a side view of the fourth seat position P4. In the fourth seat position P4, the seat S can be adjusted upward in the vertical direction z, in particular, the height can be adjusted.

[0070] Figure 8 A perspective view of a seat surface structure 120 of a seat S, in particular a vehicle seat 100, is shown, which seat has a pivot mechanism 200 for pivoting the seat surface structure 120. The pivot mechanism 200 can be designed as a tilt and height adjustment kinematic member. The pivot mechanism 200 can be operatively connected to the longitudinal adjustment device 110. For example, the pivot mechanism 200 can be coupled to one track assembly 112 on each side of the seat. A pivoting of the seat S can lead to a longitudinal adjustment of the seat S and vice versa.

[0071] The pivot mechanism 200 comprises in each case a joint assembly 210 (e.g. a four-joint assembly or a multi-joint assembly) and a drive kinematic component 220 on both sides of the seat of the seat surface structure 120, which are arranged offset with respect to each other in the transverse direction y, and the drive kinematic component is composed of, for example, several or more drive units 222.

[0072] The drive kinematics component 220 is connected to the corresponding joint assembly 210 via the coupling interface 230, such as Fig.10 Better shown in .

[0073] The joint assembly 210 is connected to, for example, the first track element 114 of the track assembly 112. The drive kinematics member 220 is also secured to the first track element 114 and is operably connected to the joint assembly 210 via the first track element 114. The seat surface structure 120 is adjusted by moving the joint assembly 210 or the joint assembly 210, respectively, relative to the first track element 114 through the drive kinematics member 220.

[0074] The drive unit 222 can be a spindle drive. The drive unit 222 can comprise in each case a motor 221 , a gear unit 226 connected to the motor 224 and a spindle 228 adjustable relative to the gear unit 226 .

[0075] For example, at least one drive unit 222 can be fastened to the first track element 114 and connected to at least one adjustment arm 212 of the joint assembly 210. The adjustment arm 212 is connected to the first seat shell 122 and the first track element 114. For example, the adjustment arm 212 can be fastened to the crossbar 126 connecting the seat side. The adjustment arm 212 can be connected to the seat side of the first seat shell 122. The adjustment arm 212 is rotatably mounted on the first track element 114.

[0076] The adjustment arm 212 can be designed as a rear link 214 of the joint assembly 210. In addition, the joint assembly 210 can have at least one front link 216. The front link 216 is connected to the seat side of the first seat shell 122. The front link 216 of the joint assembly 210 can be connected by connecting the web 218 (such as Fig.10 shown) are connected to each other, for example in the form of a rod.

[0077] At least one drive unit 222 can be fastened to the front crossbar 128 connecting the seat sides of the first seat shell 122 to each other, which can activate the movement of the front link 216. The drive unit 222 is rotatably mounted on the front link 216 of the at least one joint assembly 210 via a coupling interface 230.

[0078] Adjustment of the seat surface structure 120 is achieved by actuating the kinematic member 220 to move the front link 216 relative to the fixed crossbar 128 .

[0079] Fig. 9 A perspective view of the seat surface structure 120 is shown, Fig.10 A perspective bottom view of the seat surface structure 120 is shown.

[0080] In order to pivot the second seat shell 124 relative to the first seat shell 122, the rear end of the second seat shell 124 is pivotally hinged on the first seat shell 122. The front end of the second seat shell 124 is connected to the front crossbar 128 via a drive kinematics member 220, in particular via at least one drive unit 222 of the drive kinematics member 220. The second seat shell 124 can pivot relative to the first seat shell 122 around the fulcrum D2 by the spindle movement of the drive unit 222.

[0081] The drive kinematics 220 may be designed, for example, so that the movement of the joint assembly 210 and the movement of the second seat shell 124 are performed in a mutually synchronized manner.

[0082] Fig.11An exploded view of a seat S is shown. The seat structure 400 comprises an adjustment device 500 having a pivot mechanism 200 for pivoting the seat structure 400 about a pivot axis 502. The seat structure 400 comprises a seat frame 122A and a backrest frame 142A. The seat frame 122A and the backrest frame 142A can be formed in one piece and can be adjusted together, in particular can be pivoted. In addition, the seat structure 400 comprises at least one seat shell 124, which is pivotably mounted on the seat frame 122A. The pivot mechanism 200 is coupled to the seat structure 400 and is designated to move the seat frame 122A about the pivot axis 502 and to move the seat shell 124 relative to the latter (seat frame) and in a pivot direction R1, R2 opposite to the pivot direction R1', R2' of the seat frame 122A according to the pivot direction R1', R2' of the seat frame 122A. The rear region of the seat shell 124 has a fulcrum D2 mounted on the seat frame 122A, wherein pivoting the seat shell 124 about the fulcrum D2 causes a change in the spacing of the front region of the seat shell 124 relative to the seat frame 122A. The fulcrum D2 of the seat shell 124 is arranged at least in the region of the pivot axis 502 of the seat frame 122A. The pivot mechanism 200 is designed such that the pivot mechanism 200 moves the seat frame 122A about a virtual pivot axis 502, which extends transversely to the pivot direction R1', R2' of the seat frame 122A. The pivot mechanism 200 comprises at least one pair of front links having two front links 216, wherein one link 216 is assigned to one seat side in each case. The pivot mechanism 200 comprises at least one pair of rear links having two rear links 214, wherein one link 214 is assigned to each seat side. The link pair connects the seat frame 122A to a fixed base frame 150 in each case, wherein the base frame 150 can be connected directly to the vehicle floor or can be connected to the longitudinal adjustment device 110. The base frame 150 can be connected, for example, to the first rail element 114, in particular to an upper rail or a sliding rail. In the exemplary embodiment shown, the front link 116 comprises three link arms 216A to 216C, which can be adjusted at an angle relative to each other in order to pivot the seat frame 122A relative to the base frame 150. The first link arm 216A is a supporting arm or base arm, wherein the first link arm 216A holds or supports the seat frame 122A so that it can pivot on the base frame 150. The first link arm 216A has a lower connection point 240 fixed to the base and a connection point 242 connected to a second link arm 216B. The second link arm 216B is rotatably mounted on the first link arm 216A. The second linkage arm 216B is connected to the seat frame 122A via a connection point 244 secured to the seat frame. The second linkage arm 216B is connected to the third linkage arm 216C via a connection point 244 secured to the seat frame.For example, the second link arm 216B and the third link arm 216C can be integrally formed. For example, the link arm integrally formed by 216B and 216C can be designed to be roughly L-shaped. In the exemplary embodiment shown, the connecting web 218 extends through the connection point 244 fixed to the seat frame and connects the second link arm 216B to the third link arm 216C. The second link arm 216B and the third link arm 216C are firmly fixed to the connecting web 218. The second link arm 216B and the third link arm 216C can be pivoted together relative to the first link arm 216A, for example, a certain angle can be adjusted relative to the first link arm 216A. The front area of ​​the seat frame 122A can move relative to the first link arm 216A around the pivot axis 502, in particular pivot. The rear link 214 can be designed to pivotally hold the seat frame 122A. At least one of the front links 116 is coupled to the first drive unit 222, 222A. For example, the first drive unit 222A is connected to the third linkage arm 216C via a coupling interface 230. The coupling interface 230 forms a connection point 246, by which the drive unit 222A is rotatably mounted on the linkage 116 of the linkage mechanism 200. The other end of the first drive unit 222A is fixed to the seat frame 122A. To this end, the first drive unit 222A has a connection point 248 fixed to the seat frame 122A. For example, the connection point 246 is configured on the crossbar 128 of the seat frame 122A. The crossbar 128 can have a fixed retaining arm 130 for fastening the first drive unit 222A to the seat frame 122A. At least one second drive unit 222, 222B is provided, which is designated in operation to pivot the seat shell 124 relative to the seat frame 122A. The second drive unit 222B has a connection point 250 rotatably mounted on the seat frame 122A, and a connection point 252 fixed to the seat shell 124. The connection point 250 is arranged on the crossbar 128. The crossbar 128 may have at least one additional retaining arm 132 for rotatably mounting the second drive unit 222B on the seat frame 122A. At least one third drive unit 222, 222C may be provided, which is coupled to at least one rear link 214. The rear link 214 or the plurality of rear links 214 are respectively rotatably mounted on the base frame 150. During operation of the third drive unit 222C, the rear link 214 can be pivoted relative to the base frame 150, thereby adjusting the seat S in terms of height.

[0083] Fig.12 A side view of a seat S, in particular a vehicle seat 100 , according to a second exemplary embodiment is shown, wherein the seat S comprises at least one seat surface structure 120 , one backrest structure 140 and a headrest structure 180 and is in a first seat position P1 .

[0084] The backrest structure 140 includes a first backrest shell 142, specifically a backrest frame 142A. The first backrest shell 142 can form, for example, a main body or substrate of the backrest 104. In addition, the backrest structure 140 includes a second backrest shell 144, for example an additional backrest support shell, which is pivotally mounted on the first backrest shell 142. The second backrest shell 144 can be a shoulder support shell, which can be arranged in the upper shell area of ​​the first backrest shell 142. The second backrest shell 144 can be designed to be shorter than the first backrest shell 142. The length of the second backrest shell 144 can be half of the total length of the first backrest shell 142. The second backrest shell 144 can be used to support the shoulders and / or head of the occupant I. The second backrest shell 144 can be arranged in the upper half of the first backrest shell 144 and can be pivotally mounted on the latter (the first backrest shell). Furthermore, the seat S comprises a second pivot mechanism 300 for pivoting the backrest structure 140 , wherein the pivot mechanism 300 is assigned to pivot the second backrest shell 144 relative to the front plane E1 of the first backrest shell 142 .

[0085] Optionally additionally, a headrest structure 180 coupled to the backrest structure 140 may also be provided. For example, the headrest structure 180 may be connected to the second backrest shell 144 and pivotably mounted on the first backrest shell 142. The pivot mechanism 300 may be designed to pivot the second backrest shell 144 and the headrest structure 180 relative to the front plane E1 of the first backrest shell 142.

[0086] The second backrest shell 144 and the optionally additional headrest structure 180 can pivot around the fulcrum D3. The second backrest shell 144 and the optionally additional headrest structure 180 can pivot around the fulcrum D3 in two directions R3, R4 as shown by the arrows. The pivot mechanism 300 is adjustable so that when the first backrest shell 142 pivots, the second backrest shell 144 pivots in opposite directions R3, R4. When the first backrest shell 142 pivots in the first direction R3', the second backrest shell 144 pivots in the direction R4 opposite to the first direction R3'. When the first backrest shell 142 pivots in the second direction R4', the second backrest shell 144 can pivot in the direction R3 opposite to the second direction R4'.

[0087] Fig.13 Shown according to Fig.12 1 . Side view of the seat S in the middle position Z. Compared to the first seat position P1 , the first backrest shell 142 is adjusted rearwards, wherein the second backrest shell 144 is adjusted forwards.

[0088] Fig.14 Shows that according to Fig.121. A side view of the seat S in the second seat position P2. Compared to the intermediate position Z1, the first backrest shell 142 is adjusted further rearwards, wherein the second backrest shell 144 is adjusted further forwards.

[0089] Fig.15 Shown according to Fig.12 The seat S of the embodiment of the present invention is in a side view in a comfortable position (particularly an additional intermediate position Z2). In this position, the first backrest shell 142 is in a rearmost inclined position, and the second backrest shell 144 moves backwards in the direction of the front plane E1.

[0090] Subsequently, the seat S may be moved from the intermediate position Z2 to the first position P1 while maintaining constant contact between the occipital bone and the headrest structure 180 and / or between the shoulders and the backrest structure 140, as shown in FIG. Fig.16 shown.

[0091] Fig.17 A rear perspective view of the backrest structure 140 and the headrest structure 180 fixed to the backrest structure 140 is shown. In addition, a pivot mechanism 300 is provided. The pivot mechanism 300 may include a joint assembly 310 and a drive kinematics member 320 having at least one drive unit 322.

[0092] The driving unit 322 includes a motor 324, a gear unit 326 connected to the motor 324, and a main shaft 328 adjustable relative to the gear unit 326. The driving unit 322 is mounted on the first backrest shell 142 so as to be pivotable, for example, about a fulcrum D4.

[0093] Here, the second backrest shell 144 is pivotally mounted on the first backrest shell 142 via a fulcrum D3. The headrest structure 180 is pivotally mounted around a fulcrum D4. The headrest structure 180 is fixed to the second backrest shell 144.

[0094] The second back shell 144 and the headrest structure 180 may be pivoted by moving the main shaft 328 relative to the gear unit 326 .

[0095] The backrest 144 can be removed from the joint assembly 310, for example. The backrest shell 144 can be fastened to a transverse link 312 of the joint assembly 310. The transverse link 312 can be pivotally mounted in each case on a first backrest shell 144. The respective transverse link 312 is connected to the seat side of the first backrest shell 142. The transverse links 312 are connected to one another via connecting webs 314. The headrest structure 180 can be connected to the second backrest shell 144, for example, via connecting webs 314.

[0096] Fig.18 Shown according to Fig.17A perspective rear view of the backrest structure 140 and the headrest structure 180 in a first backrest position, and Fig.19 Shown according to Fig.17 1. A perspective rear view of the backrest structure 140 and the headrest structure 180 in the second backrest position.

[0097] Reference numerals list

[0098] 100 Vehicle seats

[0099] 102 Seat Section

[0100] 104 Backrest

[0101] 106 Assembly

[0102] 108 Rotation axis

[0103] 110 Longitudinal adjustment equipment

[0104] 112 Track Components

[0105] 114 First track element

[0106] 116 Second track element

[0107] 118 Headrest

[0108] 120 Seat surface structure

[0109] 122 First seat shell

[0110] 122A Seat frame

[0111] 124 Second seat shell

[0112] 126 Crossbar

[0113] 128 Crossbar

[0114] 130 Holding arm

[0115] 132 Holding arm

[0116] 140 Backrest structure

[0117] 142 Backrest shell

[0118] 142A Backrest frame

[0119] 144 Backrest shell

[0120] 150 Base frame

[0121] 180 Headrest structure

[0122] 200 Pivot mechanism

[0123] 210 Connector Assembly

[0124] 213 Adjustment arm

[0125] 214 rear link

[0126] 216 Front Link

[0127] 216A to 216C Link Arm

[0128] 218 Connecting web

[0129] 220 Drive kinematics components

[0130] 222, 222A to 222C drive units

[0131] 224 Motor

[0132] 226 Gear Unit

[0133] 228 Spindle

[0134] 230 coupling interface

[0135] 240 to 252 connection points

[0136] 300 Pivot Mechanism

[0137] 310 Connector Assembly

[0138] 312 Transverse link

[0139] 314 Connecting web

[0140] 320 Drive kinematics components

[0141] 322 Drive Unit

[0142] 324 Motor

[0143] 326 Gear Unit

[0144] 328 Spindle

[0145] 400 Seat Structure

[0146] 500 Adjustment device

[0147] 502 Pivot axis

[0148] 600 Height adjustment mechanism

[0149] D1 to D4 pivot points

[0150] E1 front plane

[0151] I Crew

[0152] P1 to P4 seat positions

[0153] Directions R1 to R4', in particular the pivoting direction

[0154] S Seat

[0155] Z1, Z2 middle position

[0156] x longitudinal direction

[0157] y horizontal direction

[0158] z vertical direction

Claims

1. A seat (S), in particular a vehicle seat (100), comprising at least: - a seat structure (400), and - an adjustment device (500) having at least one pivot mechanism (200) for pivoting the seat structure (400) about a pivot axis (502), It is characterized in that The seat structure (400) includes at least one seat frame (122A) and a seat shell (124) pivotally mounted on the seat frame (122A), wherein a pivot mechanism (200) is coupled to the seat structure (400) and is designated to move the seat frame (122A) about a pivot axis (502) and, depending on a pivot direction (R1', R2') of the seat frame (122A), to move the seat shell (124) relative to the seat frame and in a pivot direction (R1, R2) opposite to the pivot direction (R1', R2') of the seat frame (122A).

2. The seat (S) according to claim 1, characterized in that The rear region of the seat shell (124) has a fulcrum (D2) mounted on the seat frame (122A), wherein pivoting of the seat shell (124) about the fulcrum (D2) causes a change in the spacing of the front region of the seat shell (124) relative to the seat frame (122A).

3. The seat (S) according to claim 2, characterized in that The fulcrum (D2) of the seat shell (124) is arranged at least in the region of the pivot axis (502) of the seat frame (122A).

4. A seat (S) according to any one of the preceding claims, characterised in that The pivot mechanism (200) is designed such that the pivot mechanism (200) moves the seat frame (122A) about an imaginary pivot axis (502) extending transversely to a pivot direction (R1', R2') of the seat frame (122A).

5. A seat (S) according to any one of the preceding claims, characterised in that The pivot mechanism (200) comprises at least one front link (216) and at least one rear link (214), which in each case connect the seat frame (122A) to a fixed base frame (150), wherein the front link (216) or the rear link (214) has at least two link arms (216A to 216C) which are adjustable at a certain angle relative to each other in order to pivot the seat frame (122A).

6. A seat (S) according to any one of the preceding claims, characterised in that At least one first drive unit (222, 222A) is provided, which is designated for pivoting the seat frame (122A) during operation, wherein the first drive unit (222, 222A) has at least one connection point (248) fixed to the seat frame (122A) and a connection point (246) connected to the pivot mechanism (200) and rotatably mounted.

7. A seat (S) according to any one of the preceding claims, characterised in that At least one second drive unit (222, 222B) is provided, which is designated to pivot the seat shell (124) relative to the seat frame (122A) during operation, wherein the second drive unit (222, 222B) has at least one connection point (252) fixed to the seat shell (124) and a connection point (250) rotatably mounted on the seat frame (122A).

8. The seat (S) according to claim 7, characterized in that The drive units (222, 222A to 222C) are capable of synchronous operation.

9. A seat (S) according to any one of the preceding claims, characterised in that The adjustment device (500) includes at least one height adjustment mechanism (600) connected to the pivot mechanism (200), and / or a longitudinal adjustment device (110).

10. A seat (S) according to any one of the preceding claims, wherein: The seat structure (400) includes a backrest frame (124A) fixedly connected to and / or integrally formed with the seat frame (122A).

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