Seat with a seat adjustment arrangement and a rail arrangement, as well as a seat with a seat support structure

Abstract

A seat, in particular a vehicle seat, with a seat adjustment arrangement (6) for adjusting the height and / or tilt of the seat and a rail arrangement (4) for adjusting the longitudinal position of the seat, wherein the seat adjustment arrangement (6) comprises a multi-link arrangement (5) which is articulated to the rail arrangement (4), wherein the rail arrangement (4) comprises two pairs of rails (PA1, PA2) each with a single lower rail (4.1) and an upper rail (4.2) formed from a plurality of movable upper rail elements (4.2.1 to 4.2.3), and wherein the multi-link arrangement (5) is articulated to the upper rail elements (4.2.1 to 4.2.3) multiple times, wherein a plurality of actuators (8) are provided for adjusting the movable upper rail elements (4.2.1 to 4.2.3), and wherein two opposing upper rail elements (4.2.1 to 4.2.3) are each3) are assigned to an actuator (8) from the plurality of actuators (8) and are coupled to each other via this associated actuator (8), wherein the respective actuator (8) is designed as a motor unit (7) which is held in an associated retaining element (9) between the two opposing paired upper rail elements (4.2.1 to 4.2.3), wherein the multi-link arrangement (5) comprises a plurality of articulated arms (5.1 to 5.3), wherein a central articulated arm (5.2) is rotatable about a pivot point (D2) on the rail side of one of the movable upper rail elements (4.2.1 to 4.2.3) and is articulated on the seat side to a seat support structure (3), wherein a front articulated arm (5.1) is articulated about a pivot point (D6) on the rail side of one of the movable upper rail elements (4.2.1 to 4.2.3) and on the central articulated arm (5.2). is rotatably hinged, with a rear articulated arm (5.3) being attached to one of the movable upper rail elements (4.2) on the rail side.1 to 4.2.3) is pivotally connected to a pivot point (D3) and to the seat surface structure (3) on the seat side.

Description

[0001] The invention relates to a seat, in particular a vehicle seat, with a seat adjustment arrangement for adjusting the height and / or tilt of the seat and a rail arrangement for adjusting the longitudinal position of the seat. The invention further relates to a seat with a seat support structure.

[0002] Seat support structures are known from the prior art which are adjustable in length, height, and / or tilt in a conventional manner. For example, such a seat support structure comprises a backrest that is pivotably mounted on a seat surface. The backrest is attached to the seat surface, for example, by means of a fitting, and can be pivoted electrically or manually relative to the seat surface.

[0003] For example, a seat support structure with a plurality of rotary-sliding joints is known from DE 10 2004 055 643 A1. Another adjustment device for the longitudinal adjustment of a vehicle seat is known from DE 10 2017 206 679 A1.

[0004] The object of the present invention is therefore to provide an improved and easily and variably adjustable seat, in particular a vehicle seat, especially of an autonomously driving vehicle.

[0005] The problem is solved according to the invention with a seat having the features of claim 1 or 2.

[0006] Advantageous further developments are the subject of the dependent patent claims.

[0007] The seat according to the invention comprises a seat adjustment arrangement for adjusting the height and / or tilt of the seat and a rail arrangement for adjusting the longitudinal position of the seat, wherein the seat adjustment arrangement comprises a multi-joint arrangement which is articulated to the rail arrangement, wherein the rail arrangement comprises a plurality of movable upper rail elements and wherein the multi-joint arrangement is articulated to the upper rail elements multiple times, wherein a plurality of actuators is provided for adjusting the movable upper rail elements and wherein two opposing upper rail elements are assigned to one actuator from the plurality of actuators and are coupled to each other via this associated actuator.

[0008] Another seat according to the invention, in particular a vehicle seat, comprises a seat support structure, which is in particular variably adjustable and comprises at least one backrest support structure and a seat surface support structure, which is attached to a rail arrangement by means of a multi-joint arrangement with a plurality of articulated arms, wherein the rail arrangement has a lower rail and an upper rail movable relative to the lower rail, and wherein the upper rail is divided into at least two or more movable upper rail elements, to which articulated arms of the multi-joint arrangement are articulated or coupled, in particular motion-coupled, for example rotatably coupled, wherein a plurality of actuators are provided for adjusting the movable upper rail elements and wherein two,Paired, opposing upper rail elements are assigned to an actuator from the majority of actuators and are motion-coupled with each other via this associated actuator.

[0009] A seat with a multi-joint arrangement and multiple joint couplings to variably adjustable upper rail elements is essentially compact, weight-reduced and comparatively component-optimized, and particularly variable in height, tilt and / or length.

[0010] Further development provides that each articulated arm is rotatable on one of the movable upper rail elements about a pivot point on the rail side and on the other hand is articulated on the seat side, in particular on the seat support side, to the seat support structure.

[0011] The upper rail elements can be moved independently of and / or relative to each other, or at least partially or all synchronously with each other.

[0012] The multi-joint arrangement is designed, for example, as a synchronous mechanism for longitudinal adjustment of the seat. For this purpose, the upper rail elements and the seat are rigidly coupled to one another, with the articulated arms being, for example, held or mounted in a positionally stable manner, so that during a synchronous movement, particularly a longitudinal movement, of the upper rail elements relative to the lower rail, the seat is longitudinally movable, particularly longitudinally displaceable, relative to the lower rail. For example, each upper rail element is provided with an actuator for the controlled movement of the associated upper rail element, whereby all actuators of the upper rail elements to be displaced synchronously are controlled synchronously in order to move, in particular to displace, the upper rail elements simultaneously and by the same length.

[0013] Furthermore, the multi-joint arrangement in combination with the variably adjustable upper rail elements is designed, for example, as a lever mechanism for adjusting the height and / or tilt of the seat, wherein the articulated arms are mounted in a positionally movable, in particular rotatable, manner, so that when one or more of the upper rail elements move, in particular longitudinally, relative to the lower rail, the seat can be moved forwards, backwards, upwards and / or downwards, in particular tilted and / or adjusted.

[0014] In particular, the upper rail elements are movable independently of and / or relative to each other, and / or at least partially or all synchronously, such that the distance between the pivot points of the articulated arms can be changed. For example, a central upper rail element is movable longitudinally relative to a front and a rear upper rail element, so that the distance between the pivot points of the articulated arms between the front and the central upper rail element decreases, and at the same time the distance between the pivot points of the articulated arms between the rear and the central upper rail element increases, or vice versa. This allows for a simple tilting of the seat, especially of a seat support structure, upwards at the front and downwards at the rear.

[0015] Another embodiment provides that the upper rail elements are movable independently of and / or relative to each other, or at least partially or all synchronously, such that the pivot points of the articulated arms are independently displaceable or at least partially synchronously displaceable. In particular, the rotation angles of the articulated arms are independently variable and / or partially synchronously variable.

[0016] Furthermore, the upper rail elements are so independent of and / or relative to each other, or at least partially or all synchronously movable, that the rotation angles of the articulated arms attached to the upper rail elements can be changed or maintained independently of each other.

[0017] Such a combination of movable upper rail elements, in particular the independent and / or at least partially synchronous movement of individual, multiple, or all upper rail elements, with a multi-joint arrangement for coupling to the seat, enables the simple movement, in particular the displacement and / or rotation, of individual, multiple, or all articulated arms independently of one another, resulting in a variable change in the angles of the articulated arms of the multi-joint arrangement, in particular a four-joint arrangement. This allows for the adjustment of various seating positions, from a standard sitting position through a comfortable seating position to a reclining position.

[0018] A further development provides that the articulated arms of the multi-joint assembly are designed and end-mounted in such a way that they are independently adjustable, allowing the seat support structure to be adjusted in height and / or tilt relative to the rail assembly, particularly to the upper rail elements and the lower rail. By combining a segmented upper rail with variably adjustable upper rail elements and a multi-joint assembly with multiple pivot points on these variably adjustable upper rail elements, a particularly simple seat adjustment mechanism, specifically a simple height and / or tilt adjuster, is created for the seat support structure.

[0019] For example, the upper rail is subdivided into a first upper rail element, a second upper rail element, and a third upper rail element. The first, second, and third upper rail elements can be moved synchronously with each other, for example, to allow longitudinal adjustment of the seat.

[0020] Alternatively or additionally, the first upper rail element is movable relative to the second upper rail element and the third upper rail element to allow height adjustment of the seat, in particular the seat support structure, upwards or downwards.

[0021] Alternatively or additionally, the third upper rail element is movable relative to the first upper rail element and the second upper rail element to allow a rearward tilt of the seat, in particular the seat support structure, upwards or downwards.

[0022] Alternatively or additionally, the second upper rail element is movable relative to the first upper rail element and the third upper rail element to allow a forward tilt of the seat, in particular the seat support structure, upwards or downwards.

[0023] Thanks to such a variably adjustable seat support structure, the vehicle seat can be easily and quickly adjusted between different positions, such as a seated driving position, a seated comfort position, a seated zero position, a seated bed position and a reclined seated lying position, and can be set to one of these positions or any intermediate position according to the respective user's wishes.

[0024] Exemplary embodiments of the invention are explained in more detail with reference to the drawings. These show: Fig. 1 Schematic side view of a seat support structure in a seated driving position, Fig. 2 schematically in side view a seat support structure in a seating comfort position, Fig. 3 schematically in side view a seat support structure in a seat zero point position, Fig. 4 schematically in side view a seat support structure in a seat bed position, Fig. 5 schematically in side view a seat support structure in an inclined sitting / lying position, Fig. 6 schematically in side view an example of a movement sequence of the seat support structure between the driving seat position and the comfort seat position, Fig. Figure 7 schematically shows in perspective another aspect of the invention with a rail arrangement with a divided upper rail and separate actuators and Fig. 8A to 8D schematically in side view of a pair of rails of the rail arrangement according to Fig. 7 different positions of a seat surface structure arranged on this rail arrangement.

[0025] Corresponding parts are marked with the same reference symbols in all figures.

[0026] Fig. Figure 1 schematically shows a seat support structure 1 in a seated driving position P1 in a side view. The seat support structure 1 forms a support, in particular a frame support, for upholstery (not shown in detail) of a seat, in particular a vehicle seat, for example of an autonomous vehicle. The arrangement of the seat in the vehicle defines the coordinate system used below, comprising a vertical axis Z, a longitudinal axis X, and a transverse axis Y, wherein the vertical axis Z is parallel to the vehicle's vertical orientation, the longitudinal axis X is parallel to the vehicle's longitudinal orientation, and the transverse axis Y is parallel to the vehicle's transverse orientation.

[0027] The seat support structure 1 is variably adjustable and includes, for example, a seat back support structure 2 and a seat surface support structure 3.

[0028] The seat support structure 3 is attached to a rail arrangement 4. A multi-joint arrangement 5 is provided for this purpose.

[0029] The rail arrangement 4 comprises a lower rail 4.1 and a top rail 4.2 that is movable relative to the lower rail 4.1.

[0030] The multi-link arrangement 5 comprises a plurality of articulated arms 5.1 to 5.3. The articulated arm 5.1 is a front articulated arm 5.1 in the longitudinal direction of the vehicle, the articulated arm 5.2 is a middle articulated arm 5.2 in the longitudinal direction of the vehicle, and the articulated arm 5.3 is a rear articulated arm 5.3 in the longitudinal direction of the vehicle.

[0031] The lower rail 4.1 is designed, for example, as a single, continuous, and long rail. The upper rail 4.2 is divided into at least two or more movable upper rail elements 4.2.1 to 4.2.3. The upper rail elements 4.2.1 to 4.2.3 are mounted on the upper surface of the lower rail 4.1 so as to be movable, in particular slidable, relative to each other and to the lower rail 4.1. For example, the upper rail elements 4.2.1 to 4.2.3 are guided on the lower rail 4.1 by means of ball bearings.

[0032] Alternatively, a conventional two-part rail arrangement (not shown) can be provided, consisting of a single lower rail and a movable upper rail, wherein two or more movable upper rail elements 4.2.1 to 4.2.3 are movably mounted on the upper rail. In this alternative embodiment, these upper rail elements 4.2.1 to 4.2.3 are mounted so as to be movable, in particular slidable, relative to each other and to both the single lower rail and the single upper rail. For example, the upper rail elements 4.2.1 to 4.2.3 are guided on the single (not shown) upper rail by means of ball bearings. The movement of the upper rail elements 4.2.1 to 4.2.3 is described in more detail below, whereby this movement is carried out identically for both the illustrated embodiment with a split upper rail 4.2 and the alternatively described (not shown) single upper rail.

[0033] Each articulated arm 5.1 to 5.3 is rotatable on the rail side about a corresponding pivot point D1 to D3 on one of the movable upper rail elements 4.2.1 to 4.2.3 and is hinged on the seat side to the seat support structure 3. The articulated arms 5.1 to 5.3 are also hinged on the seat side about further pivot points D4 to D5 on the seat support structure 3. The front articulated arm 5.1 is also hinged about a further pivot point D6 on the middle articulated arm 5.2.

[0034] The upper rail elements 4.2.1 to 4.2.3 are movable independently of and / or relative to each other, so that the distance between the pivot points D1 to D3 can be changed. Alternatively or additionally, several or all upper rail elements 4.2.1 to 4.2.3 can be moved synchronously with each other. For example, upper rail element 4.2.1 is the front upper rail element 4.2.1 when viewed in the longitudinal direction of the vehicle, upper rail element 4.2.2 is the middle upper rail element 4.2.2 when viewed in the longitudinal direction of the vehicle, and upper rail element 4.2.3 is the rear upper rail element 4.2.3 when viewed in the longitudinal direction of the vehicle. The middle upper rail element 4.2.2 is arranged in the longitudinal direction of the vehicle between the front upper rail element 4.2.1 and the rear upper rail element 4.2.3.

[0035] By such a variable displacement of the pivot points D1 to D3, the angles of the articulated arms 5.1 to 5.3 of the multi-link arrangement 5 can be variably changed relative to the rail arrangement 4, thus enabling different seating positions P.

[0036] The multi-link arrangement 5 is, for example, designed as a six-link arrangement with three articulated arms 5.1 to 5.3 and six articulation points G1 to G6. Alternatively, depending on the desired adjustability, the multi-link arrangement 5 can also be designed as a four- or five-link arrangement.

[0037] The articulated arms 5.1 to 5.3 are arranged and, at one end on the seat support side, are attached to the seat support structure 3 or to one of the articulated arms 5.1 and, at the opposite end on the rail side, are attached to the rail arrangement 4, in particular to the upper rail elements 4.2.1 to 4.2.3, in such a way and are independently adjustable and / or at least partially synchronously adjustable with each other, that the seat support structure 3 is adjustable relative to the rail arrangement 4 in height H and / or inclination N.

[0038] By combining the subdivided upper rail 4.2 with a multi-joint arrangement 5 articulated at multiple points on the upper rail elements 4.2.1 to 4.2.3, a particularly simple seat adjustment arrangement 6, in particular a simple height and / or tilt adjuster, is created for the seat support structure 1.

[0039] The seat support structure 3 can also be designed in multiple parts. For example, the seat support structure 3 can comprise a base support element 3.1 and an upholstery support element 3.2 articulated to the base support element 3.1 on the side facing away from the rail. The upholstery support element 3.2 is articulated at a front end VE of the seat support structure 3 to the base support element 3.1 via an articulated arm 5.4, and at a rear end HE the upholstery support element 3.2 is articulated to the seat back support structure 2 by means of a further multi-joint arrangement 50.

[0040] The multi-link assemblies 5, 50 are coupled to each other in their movement and form a synchronous mechanism. This means that when one of the upper rail elements 4.2.1 to 4.2.3 moves, the articulated arms 5.1 to 5.n of the multi-link assemblies 5, 50 are forced to move, causing the seat support structure 3 and the seat back support structure 2 to move relative to each other and adjusting the seat support structure 1 into one of the various positions P1 to P5.

[0041] For example, the seat adjustment arrangement 6 is designed to initiate an angular adjustment with an angle α of the seat surface support structure 3 relative to the rail arrangement 4 and thus an inclination N of the seat surface support structure 3 relative to the rail arrangement 4 by shifting one or more of the upper rail elements 4.2.1 to 4.2.3 along the rail arrangement 4 relative to the lower rail 4.1 in the longitudinal direction L and / or to initiate an angular adjustment with an angle β of the seat back support structure 2 relative to the rail arrangement 4 and / or an angular adjustment with an angle γ of the seat back support structure 2 relative to the seat surface support structure 3.

[0042] For example, a motor unit 7 is arranged in the area of ​​the rail assembly 4. The motor unit 7 is configured to control the separate and independently and / or partially synchronously movable upper rail elements 4.2.1 to 4.2.3 and to initiate movement, in particular the traveling or shifting of at least one of the upper rail elements 4.2.1 to 4.2.3 along the lower rail 4.1 in the longitudinal direction L. For example, the motor unit 7 is configured as a linear drive.

[0043] Such a variable adjustment of the pivot points D1 to D3 of the articulated arms 5.1 to 5.3 by the independent and / or partially synchronous adjustment of the respective associated upper rail elements 4.2.1 to 4.2.3 enables in a simple manner a large height adjustment range for the height H and / or a large tilt adjustment range for the tilt N of the seat support structure 3.

[0044] Fig. Figure 1 shows the seat support structure 1 in the seated driving position P1, in which the seat surface support structure 3 is positioned at an angle α of, for example, approximately 15° (also called cushion angle) to the rail arrangement 4 and the seat back support structure 2 is positioned at an angle δ of, for example, approximately 25° (also called torso / backrest angle) to the vertical axis Z.

[0045] Fig. Figure 2 shows the seat support structure 1 in the seating comfort position P2, in which the seat surface support structure 3 is positioned at an angle α of approximately 20° (also called cushion angle) to the rail arrangement 4 and the seat back support structure 2 is positioned at an angle δ of approximately 45° (also called torso / backrest angle) to the vertical axis Z.

[0046] For this purpose, for example, the front upper rail element 4.2.1 is adjusted independently of the other, and in particular at this moment stationary, upper rail elements 4.2.2 and 4.2.3 and relative to these and the lower rail 4.1 according to arrow aPF1, so that the seat surface support structure 3, in particular the base support element 3.1 and with it the upholstery support element 3.2, is inclined more upwards at the front and more downwards at the rear according to arrow PF2, and the seat back support structure 2 is inclined more towards the rear according to arrow PF3 due to the pivoting of the front upper rail element 4.2.1 on the middle articulated arm 5.2 at pivot point D6 and the rotation of the articulated arms 5.2 and 5.3 about their pivot points D2 to D5.

[0047] In addition, the middle upper rail element 4.2.2 can be adjusted independently of the other upper rail elements 4.2.1 and 4.2.3, which are fixed in place at this moment, and relative to these and the lower rail 4.1, according to arrow PF1, whereby the seat support structure 3, in particular the upholstery support element 3.2, is inclined more upwards at the front and more downwards at the rear, according to arrow PF2, and the seat back support structure 2 is inclined more backwards, according to arrow PF3, due to the movement coupling of the multi-joint arrangements 5 and 50.

[0048] Fig. Figure 3 schematically shows in a side view the seat support structure 1 in a so-called seat zero point position P3 (also called Zero Gravity Position), in which the seat surface support structure 3 is positioned, for example, at an angle α of approximately 22° (also called cushion angle) to the rail arrangement 4 and the seat back support structure 2 is positioned at an angle δ of approximately 60° (also called torso / backrest angle) to the vertical axis Z.

[0049] For this purpose, the middle upper rail element 4.2.2 is adjusted further forward in the direction of the front upper rail element 4.2.1, independently of the other upper rail elements 4.2.1 and 4.2.3, which are fixed in position at this moment, and relative to these and the lower rail 4.1, according to arrow PF10, so that the seat surface support structure 3, in particular the base support element 3.1 and the upholstery support element 3.2, tilts more upwards at the front and more downwards at the rear, according to arrow PF20, and the seat back support structure 2 tilts more backwards, according to arrow PF30, due to the corresponding rotation of the articulated arms 5.1 to 5.3 about their pivot points D1 to D6 and the movement coupling of the multi-joint arrangements 5 and 50.

[0050] Fig. Figure 4 schematically shows in a side view the seat support structure 1 in the seat bed position P4, in which the seat surface support structure 3 is positioned, for example, at an angle α of approximately 0° (also called cushion angle) to the rail arrangement 4 and the seat back support structure 2 is positioned at an angle δ of approximately 90° (also called torso / backrest angle) to the vertical axis Z.

[0051] For this purpose, the middle upper rail element 4.2.2 is moved independently of the other upper rail elements 4.2.1 and 4.2.3 and relative to them and the lower rail 4.1 in the opposite direction, i.e., backwards towards the rear upper rail element 4.2.3, according to arrow PF40. The rear upper rail element 4.2.3 is also moved backwards away from the middle upper rail element 4.2.2, according to arrow PF50. This causes the seat support structure 3 to tilt downwards again, according to arrow PF60, and the seat back support structure 2 to tilt even further backwards, according to arrow PF70, due to the movement coupling of the multi-joint assemblies 5 and 50. The middle upper rail element 4.2.2 and the rear upper rail element 4.2.3 can be moved backwards synchronously, in particular, shifted.

[0052] Fig. Figure 5 schematically shows in a side view the seat support structure 1 in an inclined sitting reclining position P5, in which the seat surface support structure 3 is positioned, for example, at an angle α of approximately 2° (also called cushion angle) to the rail arrangement 4 and the seat back support structure 2 is positioned at an angle δ of approximately 88° (also called torso / backrest angle) to the vertical axis Z.

[0053] For this purpose, the rear upper rail element 4.2.3 is adjusted forwards in the direction of the middle upper rail element 4.2.2, independently of the other front upper rail elements 4.2.1 and 4.2.2 and relative to these and the lower rail 4.1, according to arrow PF80, so that the seat surface support structure 3, in particular the rear end HE of the upholstery support element 3.2, is tilted slightly upwards by 2° according to arrow PF90 and the seat back support structure 2 is tilted forwards again by 2° according to arrow PF100 due to the movement coupling of the multi-joint arrangements 5 and 50.

[0054] The multi-joint arrangement 50 comprises several mutually coupled articulated arms 50.1 to 50.3 for coupling the movement of the seat support structure 3, in particular the upholstery support element 3.2, and the seat back support structure 2. One articulated arm 50.1 is rotatably connected on one side to the upholstery support element 3.2 and on the other side to another articulated arm 50.2, which in turn is rotatably connected to both the upholstery support element 3.2 and the seat back support structure 2. Another articulated arm 50.3 is rotatably connected to both the seat back support structure 2 and the articulated arm 50.2.

[0055] The multi-joint arrangement 50 thus couples the seat surface support structure 3 and the seat back support structure 2 to each other. The multi-joint arrangement 50 can be controlled independently of the multi-joint arrangement 5, which is arranged between the seat support structure 1 and the rail arrangement 4 and couples their movement to each other, and can effect an adjustment only of the seat support structure 1, in particular the seat surface support structure 3 and the seat back support structure 2 relative to each other.

[0056] Fig. Figure 6 schematically shows in a side view an example of a movement sequence (also called floating) of the seat support structure 1 between the seat driving position P1 and the seat comfort position P2 by adjusting the middle upper rail element 4.2.2 according to arrow PF110 and PF120.

[0057] Fig. Figure 7 schematically shows another aspect of the invention in a perspective view, comprising a rail arrangement 4 with two pairs of rails PA1 and PA2, each consisting of a lower rail 4.1 and a split upper rail 4.2 with upper rail elements 4.2.1 to 4.2.3. The rail pairs PA1 and PA2, consisting of the lower rail 4.1 and the split upper rail 4.2, are spaced apart from each other. Several actuators 8 are provided for variably adjusting the separate upper rail elements 4.2.1 to 4.2.3 of the rail pairs PA1 and PA2. The front upper rail elements 4.2.1 of both rail pairs PA1 and PA2 are connected to each other by means of an associated actuator 8. The middle upper rail elements 4.2.2 of both rail pairs PA1 and PA2 are connected to each other by means of a further actuator 8 and the rear upper rail elements 4.2.3 of both rail pairs PA1 and PA2 are also connected to each other by means of a further actuator 8.

[0058] The actuator 8 is designed as a motor unit 7, which is held in an associated holding element 9.

[0059] For example, the motor unit 7 is designed as a linear drive, for instance in the form of a linear spindle drive. Specifically, the motor unit 7 is an electric rotary motor whose output shaft 7.1 is coupled on the output side via a spindle nut 7.2 to a spindle 7.3, which moves the associated upper rail element 4.2.1 to 4.2.3 along the lower rail 4.1. Alternatively, instead of a rail spindle, a sliding bearing, a roller bearing, or another suitable drive technology can be used to move the upper rail elements 4.2.1 to 4.2.3.

[0060] The motor units 7 are coupled to a control unit 10 via signal technology, which controls the motor units 7 in such a way that individual, several of the and / or all upper rail elements 4.2.1 to 4.2.3 can be adjusted independently of each other and / or at least partially synchronously with each other, in particular moved.

[0061] Using the respective motor unit 7, the upper rail elements 4.2.1, 4.2.2, or 4.2.3 of the two opposing rail pairs PA1, PA2, which are coupled to this motor unit 7, are moved synchronously in the longitudinal direction L. Additionally, with respect to the respective rail pair PA1 and PA2, all upper rail elements 4.2.1 to 4.2.3 can be adjusted synchronously with each other to enable longitudinal adjustment of the seat, in particular the seat support structure 1, in the longitudinal direction L.

[0062] Rail arrangement 4 is used at the in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. The seat support structure 1 described in section 6 allows adjustment of the seat support structure into different positions P. The rail arrangement 4 can also be used for other applications.

[0063] The variable adjustment of the upper rail elements 4.2.1 to 4.2.3 is described below using one of the rail pairs PA1 in the Fig. 8A to 8C described, wherein the respective associated motor unit 7 synchronously controls and moves the opposing front upper rail elements 4.2.1 of both rail pairs PA1 and PA2, the opposing middle upper rail elements 4.2.2 of both rail pairs PA1 and PA2 and the opposing rear upper rail elements 4.2.3 of both rail pairs PA1 and PA2.

[0064] Fig. Figure 8A shows a longitudinal adjustment of the seat in the longitudinal direction L by means of simultaneous synchronous movement according to arrow PF130 of all upper rail elements 4.2.1 to 4.2.3 due to simultaneous synchronous activation of all associated motor units 7.

[0065] According to Fig. 8B is a first, in particular the front, upper rail element 4.2.1, movable in the longitudinal direction L according to arrow PF140 relative to a second, in particular the middle and stationary, upper rail element 4.2.2 and a third, in particular the rear and stationary, upper rail element 4.2.3, in order to allow adjustment in the height H of the seat, in particular the seat support structure 3, upwards or downwards. In this process, the front articulated arm 5.1, which is centrally pivoted to the middle articulated arm 5.2, moves, in particular pivots, both the middle articulated arm 5.2 and the rear articulated arm 5.3 synchronously backwards, so that the seat support structure 3 is moved upwards in height H and backwards in the longitudinal direction L, as shown in the dashed line.

[0066] The middle articulated arm 5.2 and the rear articulated arm 5.3 are each rotatably attached to the stationary middle and rear upper rail elements 4.2.2 and 4.2.3 respectively about the pivot points D2 and D3, and rotatably attached to the seat support structure 3 about the pivot points D4 and D5.

[0067] According to Fig. Alternatively or additionally, the middle upper rail element 4.2.2 can be movable relative to the front upper rail element 4.2.1 and the rear upper rail element 4.2.3 according to arrow PF150 to allow a forward tilt N of the seat, in particular of the seat support structure 3, upwards or downwards.

[0068] As a result of the longitudinal movement of the central upper rail element 4.2.2, the central articulated arm 5.2, which is articulated to the seat support structure 3 and to the central upper rail element 4.2.2, moves, in particular rotates, about the pivot point D6 and pivots the seat support structure 3 upwards at the front and downwards at the rear, as shown in the dashed line. The front upper rail element 4.2.1 and the rear upper rail element 4.2.3 remain stationary.

[0069] The front articulated arm 5.1 and the rear articulated arm 5.3 are each rotatably connected to the stationary front upper rail element 4.2.1 and the stationary rear upper rail element 4.2.3 respectively about pivot points D1 and D3, and to the middle articulated arm 5.2 and the seat support structure 3 respectively about pivot points D6 and D5.

[0070] According to Fig.Alternatively or additionally, the rear upper rail element 4.2.3 can be movable relative to the front upper rail element 4.2.1 and the middle upper rail element 4.2.2 according to arrow PF160 in order to allow a rear tilt N of the seat, in particular of the seat support structure 3, especially upwards or downwards.

[0071] As a result of the longitudinal movement of the rear upper rail element 4.2.3, the rear articulated arm 5.3, which is rotatably connected to the seat support structure 3 and to the rear upper rail element 4.2.3 at pivot points D5 and D3 respectively, moves, in particular rotates, and pivots the rear of the seat support structure 3 upwards or downwards, as shown in the dashed line. The front upper rail element 4.2.1 and the middle upper rail element 4.2.2 remain stationary.

[0072] The front articulated arm 5.1 and the middle articulated arm 5.2 are each rotatably attached to the stationary front upper rail element 4.2.1 and the stationary middle upper rail element 4.2.2 respectively about the pivot points D1 and D2, respectively, and to the middle articulated arm 5.2 and the seat support structure 3 respectively about the pivot points D6 and D5.

[0073] Further variable adjustments of the upper rail elements 4.2.1 to 4.2.3 are possible separately and independently of each other or synchronously with each other for the variable adjustment of one of the seating positions P, P1 to P5. For example, the middle upper rail element 4.2.2 and the rear upper rail element 4.2.3 can be adjusted synchronously with each other and relative to the stationary front upper rail element 4.2.1.

[0074] By means of such a variably adjustable seat support structure 1, the vehicle seat can be easily and quickly adjusted between different seating positions P, such as a seat driving position P1, a seat comfort position P2, a seat zero point position P3, a seat bed position P4 and an inclined seat reclining position P5, and can be set to one of these positions P or any intermediate position P according to the respective user's wishes. Reference symbol list 1 Seat support structure 2 Seat back support structure 3 Seat support structure 3.1 Base support element 3.2 Upholstery support element 4 rail arrangement 4.1 Bottom rail 4.2 Upper rail 4.2.1 to 4.2.3 Top rail elements 5.50 Multi-joint arrangement 5.1 to 5.4 Articulated arms 50.1 to 50.3 Articulated arms 6 Seat adjustment arrangement 7 Motor unit 7.1 Output shaft 7.2 Spindle nut 7.3 Spindle 8 actuator 9 retaining element 10 Control unit D1 to D6 pivot point G1 to G6 articulation points H height HE rear end L Longitudinal direction N inclination PA1, PA2 rail pair P Seating position P1 Seating position P2 Seating comfort position P3 Seat zero position P4 Seat bed position P5 inclined reclining position aPF1, PF1 to PF160 arrows VE front end X Longitudinal axis Y transverse axis Z vertical axis α, β, γ, δ angles

Claims

[1] Seat, in particular vehicle seat, with a seat adjustment arrangement (6) for adjusting the height and / or tilt of the seat and a rail arrangement (4) for adjusting the longitudinal position of the seat, wherein the seat adjustment arrangement (6) comprises a multi-link arrangement (5) which is articulated to the rail arrangement (4), wherein the rail arrangement (4) comprises two pairs of rails (PA1, PA2) each with a single lower rail (4.1) and an upper rail (4.2) formed from a plurality of movable upper rail elements (4.2.1 to 4.2.3), and wherein the multi-link arrangement (5) is articulated to the upper rail elements (4.2.1 to 4.2.3) multiple times, wherein a plurality of actuators (8) are provided for adjusting the movable upper rail elements (4.2.1 to 4.2.3), and wherein two opposing upper rail elements (4.2.1 to 4.2.3) are each3) are assigned to an actuator (8) from the plurality of actuators (8) and are coupled to each other via this associated actuator (8), wherein the respective actuator (8) is designed as a motor unit (7) which is held in an associated retaining element (9) between the two opposing paired upper rail elements (4.2.1 to 4.2.3), wherein the multi-link arrangement (5) comprises a plurality of articulated arms (5.1 to 5.3), wherein a central articulated arm (5.2) is rotatable about a pivot point (D2) on the rail side of one of the movable upper rail elements (4.2.1 to 4.2.3) and is articulated on the seat side to a seat support structure (3), wherein a front articulated arm (5.1) is articulated about a pivot point (D6) on the rail side of one of the movable upper rail elements (4.2.1 to 4.2.3) and on the central articulated arm (5.2). is rotatably hinged, with a rear articulated arm (5.3) being attached to one of the movable upper rail elements (4.2) on the rail side.1 to 4.2.3) is pivotally connected to a pivot point (D3) and to the seat surface structure (3) on the seat side. [2] Seat with a seat support structure (1) comprising at least one seat back support structure (2) and a seat surface support structure (3), wherein the seat surface support structure (3) is attached to a rail arrangement (4) by means of a multi-link arrangement (5) with a plurality of articulated arms (5.1 to 5.3), the rail arrangement having two pairs of rails (PA1, PA2) each with a lower rail (4.1) and an upper rail (4.2) movable relative to the lower rail (4.1), and wherein the upper rail (4.2) is divided into at least two or more movable upper rail elements (4.2.1 to 4.2.3) to which articulated arms (5.1 to 5.3) of the multi-link arrangement (5) are articulated, wherein a plurality of actuators (8) are provided for adjusting the movable upper rail elements (4.2.1 to 4.2.3), and wherein two opposing upper rail elements (4.2.1 to 4.2.3) are arranged in pairs. 4.2.3) are assigned to an actuator (8) from the plurality of actuators (8) and are coupled to each other via this associated actuator (8), wherein the respective actuator (8) is designed as a motor unit (7) which is held in an associated retaining element (9) between the two opposing paired upper rail elements (4.2.1 to 4.2.3), wherein the multi-link arrangement (5) comprises a plurality of articulated arms (5.1 to 5.3), wherein a central articulated arm (5.2) is rotatable about a pivot point (D2) on the rail side of one of the movable upper rail elements (4.2.1 to 4.2.3) and is articulated on the seat side to a seat support structure (3), wherein a front articulated arm (5.1) is articulated about a pivot point (D6) on the rail side of one of the movable upper rail elements (4.2.1 to 4.2.3) and on the central articulated arm (5.2). is rotatably hinged. [3] Seat according to one of the preceding claims, wherein the upper rail elements (4.2.1 to 4.2.3) are movable independently of and / or relative to each other and / or synchronously with each other. [4] Seat according to one of the preceding claims, wherein the upper rail elements (4.2.1 to 4.2.3) are movable independently of and / or relative to each other and / or partially synchronously with each other such that the distance between the pivot points (D1 to D3) of the articulated arms (5.1 to 5.3) is variable. [5] Seat according to one of the preceding claims, wherein the upper rail elements (4.2.1 to 4.2.3) are movable independently of and / or to each other or partially synchronously with each other such that the pivot points (D1 to D3) of the articulated arms (5.1 to 5.3) are movable independently of each other or partially synchronously with each other. [6] Seat according to one of the preceding claims, wherein the upper rail elements (4.2.1 to 4.2.3) are movable independently of and / or relative to each other or synchronously with each other such that the rotation angles of the articulated arms (5.1 to 5.3) attached to the upper rail elements (4.2.1 to 4.2.3) can be changed or maintained independently of each other. [7] Seat according to one of the preceding claims, wherein the articulated arms (5.1 to 5.3) of the multi-link arrangement (5) are arranged and articulated at their ends and are independently adjustable from one another such that the seat support structure (3) is adjustable in height (H) and / or inclination (N) relative to the rail arrangement (4), in particular to the upper rail elements (4.2.1 to 4.2.3) and the lower rail (4.1). [8] Seat according to one of the preceding claims, wherein a first upper rail element (4.2.1), a second upper rail element (4.2.2) and a third upper rail element (4.2.3) are provided for each pair of rails (PA1, PA2). [9] Seat according to one of the preceding claims, wherein the first upper rail element (4.2.1), the second upper rail element (4.2.2) and the third upper rail element (4.2.3) are movable synchronously with each other, or the first upper rail element (4.2.1) is movable relative to the second upper rail element (4.2.2) and the third upper rail element (4.2.3), or the third upper rail element (4.2.3) is movable relative to the first upper rail element (4.2.1) and the second upper rail element (4.2.2), or the second upper rail element (4.2.2) is movable relative to the first upper rail element (4.2.1) and the third upper rail element (4.2.3).

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