ARMREST AND VEHICLE SEAT WITH ONE ARMREST

Abstract

The invention relates to an armrest device for a seat, in particular a vehicle seat (100), comprising at least one armrest (120) and an armrest rail arrangement (126) configured for longitudinal adjustment of the armrest (120) from a basic position to an extended position, wherein the armrest rail arrangement (126) comprises at least one fixed armrest rail (126.1) and one armrest rail (126.2) movable relative to the fixed armrest rail (126.1), in particular longitudinally adjustable, as well as a gear unit (126.3), wherein the armrest rail arrangement (126) is arranged on the armrest (120) in such a way that a drive interface (126.31) of the gear unit (126.3) is oriented downwards or upwards or in a position in between. The invention further relates to a seat, in particular a vehicle seat (100).

Description

[0001] The invention relates to an armrest device for a seat, in particular a vehicle seat, and to a seat, in particular a vehicle seat, with such an armrest device. State of the art

[0002] Armrests are generally known from the state of the art, which are, for example, height-adjustable, especially foldable or swiveling. Task

[0003] The invention is based on the objective of improving an armrest of the type mentioned above, in particular improving its adjustability, and of providing a corresponding vehicle seat. Solution

[0004] The first problem is solved according to the invention by an armrest device having the features specified in claim 1. The second problem is solved according to the invention by a seat, in particular a vehicle seat, having the features specified in claim 10.

[0005] An armrest device according to the invention comprises at least one armrest with an armrest rail arrangement which is configured for translational longitudinal adjustment of the armrest from a basic position to an extended position, wherein the armrest rail arrangement comprises at least one fixed armrest rail and one armrest rail movable relative to the fixed armrest rail, in particular longitudinally adjustable, as well as a gear unit, and wherein the armrest rail arrangement is arranged on the armrest in such a way as to the longitudinal direction such that a drive interface of the gear unit is oriented downwards or upwards, for example in the direction of a vehicle seat, or for example inwards in the direction of the vehicle seat, in particular a seat structure of the vehicle seat, or in a position in between.

[0006] By orienting the drive interface of the transmission unit in this way, an armrest drive unit can be located outside the armrest, for example on the vehicle seat, in particular below the vehicle seat or on a longitudinal side of the vehicle seat.

[0007] In other words, the armrest comprises only the armrest rail assembly and the gear unit, which can be coupled via the drive interface to an armrest drive unit, for example, a motorized armrest drive unit with a flexible output shaft. The armrest rail assembly can, for example, be rotated about a longitudinal axis. This allows the drive interface, in particular a flexible shaft interface (also called a flexible shaft input), to be positioned more downwards than directly inwards. The armrest rail assembly can be rotated, for example, within a range of 30° to 90° or up to 180°. When rotated by 90° or 180°, the drive interface for coupling with the flexible output shaft of the armrest drive unit points vertically downwards. The armrest rail assembly can also be aligned about a horizontal plane or mirrored vertically.

[0008] The armrest rail arrangement can be aligned parallel to a horizontal plane.

[0009] Alternatively, the armrest rail assembly can be rotated around a longitudinal axis. The armrest rail assembly can be inclined around the horizontal plane.

[0010] The armrest rail arrangement can be located on the underside of the armrest opposite an armrest support surface.

[0011] The armrest rail assembly can be positioned and attached within the armrest, for example, within an armrest support and / or armrest pad. This allows for a compact and visually improved armrest.

[0012] A number of functional modules can be arranged in a cavity in the armrest above the armrest rail assembly.

[0013] The number of functional modules can include at least a table, a cup holder, a control unit and / or an adjustment switch for longitudinal adjustment of the armrest.

[0014] The armrest rail arrangement can include at least one armrest drive unit which can be coupled or connected to the gearbox unit via the drive interface.

[0015] The armrest drive unit can be positioned below or within the armrest rail assembly and can be coupled to the gearbox unit via a flexible drive shaft. This allows the armrest to be designed compactly, consisting only of the armrest rails and the gearbox unit.

[0016] The seat according to the invention, in particular a vehicle seat, comprises at least one armrest with the armrest rail arrangement described above, which is configured for translational longitudinal adjustment of the armrest from a basic position to an extended position. Preferably, the vehicle seat comprises such an armrest on each side of the seat and an armrest drive unit, which is arranged below a seat structure and from which at least one flexible output shaft extends, which can be coupled to or is coupled to the armrest's drive unit. In the case of two armrests, two flexible output shafts, each extending at its end from the armrest drive unit, which is in particular arranged centrally, can be coupled to or are coupled to the two drive units. The respective flexible output shaft can be coupled to or be coupled to one of the drive units in an arc-shaped configuration.

[0017] The armrest assembly can comprise two armrests, each of which can be equipped with an armrest rail assembly. An armrest drive unit for the armrest rail assembly can be located below or within the seat structure of the seat section. The armrest drive unit can have a flexible drive shaft on both sides, particularly at each end. Each flexible drive shaft can be coupled to or connected to an associated gear unit of the respective armrest rail assembly. This allows for a space-saving and cost-effective solution, requiring only one drive unit to control two armrest rail assemblies.

[0018] The armrests are equipped with a longitudinal adjustment function that allows both armrests to be adjusted simultaneously. This enables a comfortable entry and exit function ("Welcome" function, "Farewell" function), where, for example, the armrests move backward by 150 mm to simplify getting in and out of the seat. If the seat moves all the way forward to allow access to the rear seats, the adjustable armrests prevent a collision with the center console, thus easily increasing the entry width. The armrests can also be adjusted backward when the occupant is reclining, to accommodate the movement of the occupant's upper body into a reclined position.

[0019] The gear unit can, for example, be designed as a spindle drive with a spindle and a spindle nut. The spindle is rigidly connected to the movable armrest rail. The spindle nut is movably, and in particular rotatably, mounted in the fixed armrest rail. The fixed armrest rail can, for example, be arranged and attached to a seat structure, in particular a backrest structure or a seat component structure, and / or to a floor-mounted bracket. The spindle is axially movably mounted via the spindle nut. The spindle moves the armrest, which is rigidly connected to it. The at least one flexible output shaft can be directly coupled to the spindle nut. Alternatively, the flexible output shaft can be coupled to a drive worm, which in turn drives the spindle nut. Figures and embodiments of the invention

[0020] The invention is explained in more detail below with reference to advantageous embodiments illustrated in the figures. However, the invention is not limited to these embodiments. The figures show: Fig. 1: In schematic representation, a vehicle seat with a longitudinal adjustment device and a longitudinally adjustable armrest, Fig. 2: a semi-transparent top view of an armrest, Fig. 3: A side view of an armrest rail arrangement for the armrest, Fig. 4: A top view of the vehicle seat with two longitudinally adjustable armrests and a central armrest drive unit, Fig. 5: A perspective view of an upholstered vehicle seat with two longitudinally adjustable armrests, Fig. 6: Schematic side view of an armrest rail arrangement for an armrest, Fig. 7: A side view of a vehicle seat with a longitudinally adjustable armrest, Fig. 8: A front view of a vehicle seat with two longitudinally adjustable armrests, and Fig. 9: A front view of a vehicle seat with two longitudinally adjustable armrests coupled to each other via an armrest drive unit.

[0021] Corresponding parts are marked with the same reference symbols in all figures.

[0022] One in the Fig. A schematically represented vehicle seat 100 is described below using three mutually perpendicular spatial directions. A longitudinal direction x of a vehicle seat 100 installed in a vehicle runs largely horizontally and preferably parallel to a longitudinal direction of the vehicle, which corresponds to the vehicle's usual direction of travel. A transverse direction y, perpendicular to the longitudinal direction x, is also horizontally oriented in the vehicle and runs parallel to a transverse direction of the vehicle. A vertical direction z runs perpendicular to the longitudinal direction x and perpendicular to the transverse direction y. In a vehicle seat 100 installed in a vehicle, the vertical direction z preferably runs parallel to a vertical axis of the vehicle.

[0023] The position and direction designations used, such as front, rear, top, and bottom, refer to the viewing direction of an occupant seated in vehicle seat 100 in a normal seating position, whereby the vehicle seat 100 is installed in the vehicle, in a suitable position for passenger transport with the backrest 104 upright, and oriented in the direction of travel as usual. However, the vehicle seat 100 can also be installed or moved in a different orientation, for example, transversely to the direction of travel. Unless otherwise described, the vehicle seat 100 is designed to be mirror-symmetrical about a plane perpendicular to the transverse direction y.

[0024] The backrest 104 can be pivotally mounted on a seat section 102 of the vehicle seat 100. For this purpose, the vehicle seat 100 can optionally include a fitting 106, in particular an adjustment fitting, swivel fitting, locking fitting or wobble fitting.

[0025] The position and direction specifications used, such as radial, axial, and circumferential, refer to a rotation axis 108 of the fitting 106. Radial means perpendicular to the rotation axis 108. Axial means in the direction of or parallel to the rotation axis 108.

[0026] The vehicle seat 100 can optionally include a longitudinal adjustment device 110. The longitudinal adjustment device 110 comprises, for example, a rail arrangement 112 with a first rail element 114 and a second rail element 116. The first rail element 114 is adjustable in the longitudinal direction x relative to the second rail element 116. The first rail element 114 is attached to the seat part 102. The second rail element 116 is attached to a structural element of a vehicle, for example, a vehicle floor 118 (shown in Fig. 4), attached.

[0027] For clarity, the first rail element 114 will be referred to as the upper rail 114 in the following description. This upper rail 114 (also called running rail or carriage) is assigned to the vehicle seat 100 and designed to support this vehicle seat 100. The second rail element 116 will be referred to as the lower rail 116. The lower rail 116 is fixed and, for example, connected to the floor of a vehicle.

[0028] Furthermore, the vehicle seat 100 includes at least one armrest 120 adjustable in the longitudinal direction x according to arrow 122 (also called longitudinally adjustable or axially adjustable armrest 120), which is described in more detail below.

[0029] The armrest 120 extends essentially in the longitudinal direction x. Depending on the level of equipment, the armrest 120 includes at least an armrest support surface 124 in the vertical direction z when viewed from the armrest 120.

[0030] Fig. Figure 2 shows a semi-transparent top view of an armrest 120 according to the invention.

[0031] The armrest 120 includes at least the arm support surface 124 for the support of a user's arm in the Fig. 1 of the depicted vehicle seat 100.

[0032] For longitudinal adjustment of the armrest 120, this includes at least one armrest rail arrangement 126.

[0033] In particular, an armrest device 200 is designed, which includes the armrest 120 and the armrest rail arrangement 126 for longitudinal adjustment of the armrest 120.

[0034] Optionally, depending on the equipment level, the armrest 120 can have at least one further functional module 128, in particular a movable, especially a retractable or foldable, table, a cup holder, a control unit, or the like. Furthermore, the armrest 120 can include at least one adjustment switch 130 for longitudinal adjustment of the armrest 120 and / or the vehicle seat 100. In particular, separate adjustment switches 130 for the armrest 120 and the vehicle seat 100 can be integrated into the armrest 120.

[0035] The armrest rail assembly 126 is designed for translational longitudinal adjustment of the armrest 120 from a basic position to an extended position in the longitudinal direction x. The armrest rail assembly 126 comprises at least one fixed armrest rail 126.1 and one armrest rail 126.2 movable relative to the fixed armrest rail 126.1, in particular longitudinally adjustable, as well as a gear unit 126.3.

[0036] The armrest rail assembly 126 is arranged on the armrest 120 in the longitudinal direction x such that a drive interface 126.31 of the gear unit 126.3 faces downwards, as shown in Fig. 2 and Fig. 4 shown, or is oriented towards the vehicle seat 100, in particular inwards towards the vehicle seat 100, or in a position in between.

[0037] The armrest 120 thus comprises only the armrest rail assembly 126 and the gear unit 126.3, which is connected via the drive interface 126.31 to an armrest drive unit 132 (shown in Fig. 4), for example, a motorized armrest drive unit 132. The armrest rail arrangement 126 can, for example, be rotated about a longitudinal axis 134 extending in the longitudinal direction x. This allows the drive interface 126.31 to be positioned more downwards than directly inwards.

[0038] The armrest rail assembly 126 can, for example, be arranged within the armrest 120 rotated within a range 136 of 30° to 90° or up to 180° relative to the longitudinal axis 134. When rotated by 90° or 180°, the drive interface 126.31 for coupling with the armrest drive unit 132 points inwards towards the vehicle seat 100 or vertically downwards, respectively.

[0039] The armrest rail arrangement 126 is arranged and fastened, in particular, on one of the undersides 120.1 of the armrest 120 opposite the arm support surface 124 within the armrest 120.

[0040] At least one of the functional modules 128 can be arranged in a cavity of the armrest 120 above the armrest rail arrangement 126.

[0041] Fig. Figure 3 shows a side view of the armrest rail arrangement 126 for the armrest 120.

[0042] The armrest rail assembly 126 comprises the fixed armrest rail 126.1 and the movable armrest rail 126.2, as well as the gear unit 126.3.

[0043] The gear unit 126.3 is designed, for example, as a spindle gear with a spindle 126.32 and a spindle nut 126.33.

[0044] The spindle 126.32 is rigidly connected to the movable armrest rail 126.2. For example, at least two spindle holders 138 are provided, which connect the spindle 126.32 to the movable armrest rail 126.2. This means that the spindle 126.32 and the movable armrest rail 126.2 are coupled to each other in terms of their movement.

[0045] The spindle nut 126.33 is movably, and in particular rotatably, mounted in the fixed armrest rail 126.1. For this purpose, the gear unit 126.3 comprises a gear housing 126.34, which is positively and / or frictionally engaged in the fixed armrest rail 126.1. The gear housing 126.34 includes a rotary bearing for the spindle nut 126.33. The spindle nut 126.33 can be driven via a drive worm 126.35.

[0046] The spindle 126.32 is axially movable relative to the spindle nut 126.33, the gearbox housing 126.34, and the fixed armrest rail 126.1 via the spindle nut 126.33. The spindle 126.32 carries the armrest 120, which is rigidly connected to it, along with it.

[0047] Fig. Figure 4 shows a top view, for example from the front, of the vehicle seat 100 with the backrest 104 and the seat section 102 and two longitudinally adjustable armrests 120 on both sides of the vehicle seat 100. The vehicle seat 100 is adjustable in the longitudinal direction x relative to the vehicle floor 118 by means of the longitudinal adjustment device 110 comprising two rail arrangements 112, which is arranged, for example, in a vehicle floor 118.

[0048] The vehicle seat 100 comprises two armrests 120, each equipped with the previously described armrest rail assembly 126, which is configured for translational longitudinal adjustment of the respective armrest 120 from a home position to an extended position. Each armrest 120 includes the upwardly oriented arm support surface 124. The armrest rail assembly 126 is arranged on an underside 120.1 of each armrest 120. The respective armrest rail assembly 126 is aligned parallel to the arm support surface 124 and / or to the underside 120.1 and / or parallel to a horizontal plane 144. In particular, the respective armrest rails 126.1, 126.2 are aligned parallel to the arm support surface 124 and / or to the underside 120.1 and / or parallel to a horizontal plane 144.

[0049] The armrest drive unit 132 is arranged below or in the area of ​​a seat structure 140 of the seat part 102. The armrest drive unit 132 can be arranged centrally on the seat part 102.

[0050] A flexible output shaft 142 extends from each end of the armrest drive unit 132. Depending on the design of the vehicle seat 100, only one armrest 120 may be provided; in this case, only one flexible output shaft 142 extends from the armrest drive unit 132. The armrest drive unit 132 is, for example, designed as an electric motor.

[0051] The respective flexible output shaft 142 can be coupled to or connected with the associated gear unit 126.3. The respective flexible output shaft 142 can be coupled to or connected with the associated gear unit 126.3 in an arc-shaped manner. The drive interface 126.31 of the gear unit 126.3 can be oriented downwards or inwards towards the seat part 102, or in any position between these directions within the area 136 (shown in the figure). Fig. 3) The armrest drive unit 132 can be located outside the armrest 120, for example on the vehicle seat 100, in particular below the vehicle seat 100 or on a longitudinal side of the vehicle seat 100.

[0052] The fixed armrest rail 126.1 can, for example, be arranged and attached to the seat structure 140 or optionally to a backrest structure or to a floor-mounted bracket (not shown). The at least one flexible output shaft 142 can be connected to the spindle nut 126.33 (shown in Fig. 3) be directly coupled. Alternatively, the flexible output shaft 142 can be connected to the drive worm 126.35 (shown in Fig. 3) be coupled, which in turn drives the spindle nut 126.33 (shown in Fig. 3).

[0053] Fig. Figure 5 shows a perspective view of an upholstered vehicle seat 100 with two longitudinally adjustable armrests 120.

[0054] The vehicle seat 100 comprises at least a backrest 104 and a seat section 102. Adjacent to the backrest 104 and the seat section 102, an armrest 120 can be arranged on each side of the vehicle seat 100. The armrests 120 can differ in their dimensions, for example, in width, length, and / or height, or be identical. Depending on the level of equipment, at least one of the armrests 120 can have at least one functional module 128, for example, a movable, in particular a retractable or foldable, table, a cup holder, a control unit, or the like. Furthermore, at least one of the armrests 120 can include at least one adjustment switch 130 for longitudinal adjustment of the armrest 120 and / or the vehicle seat 100. In particular, separate adjustment switches 130 for the armrest 120 and the vehicle seat 100 can be integrated into the armrest 120.

[0055] Fig. Figure 6 shows a schematic side view of an armrest rail arrangement 126 for an armrest 120.

[0056] The in Fig. The armrest rail arrangement 126 shown in Figure 6 has a downwardly oriented gear unit 126.3 and is essentially different from the one shown in Figure 6. Fig. The armrest rail arrangement 126 shown in 3 is designed in reverse.

[0057] The armrest rail assembly 126 comprises a lower fixed armrest rail 126.1 and an upper armrest rail 126.2 movable relative to it, as well as a gear unit 126.3 fixed to the fixed armrest rail 126.1.

[0058] The gear unit 126.3 is designed, for example, as a spindle gear with a spindle 126.32 and a spindle nut 126.33.

[0059] The spindle 126.32 is rigidly connected to the movable armrest rail 126.2. For example, at least two spindle holders 138 are provided, which connect the spindle 126.32 to the movable armrest rail 126.2. This means that the spindle 126.32 and the movable armrest rail 126.2 are coupled to each other in terms of their movement.

[0060] The spindle nut 126.33 is movably, and in particular rotatably, mounted in the fixed armrest rail 126.1. For this purpose, the gear unit 126.3 comprises a gear housing 126.34, which is positively and / or frictionally engaged in the fixed armrest rail 126.1. The gear housing 126.34 includes a rotary bearing for the spindle nut 126.33. The spindle nut 126.33 can be driven via a drive worm 126.35.

[0061] The spindle 126.32 is axially movable relative to the spindle nut 126.33, the gearbox housing 126.34, and the fixed armrest rail 126.1 via the spindle nut 126.33. By driving the gearbox unit 126.3, the spindle 126.32 can be moved relative to the gearbox unit 126.3, thereby moving the armrest 120, which is rigidly connected to the movable armrest rail 126.2.

[0062] The fixed armrest rail 126.1 can be connected to a seat structure 140, for example a seat base structure or seat support structure, and / or to a floor connection structure (not shown) via fastening elements 150. The fastening elements 150 can be screw elements.

[0063] Fig. Figure 7 shows a side view of a vehicle seat 100 with a longitudinally adjustable armrest 120.

[0064] The armrest 120 includes at least the arm support surface 124 for the support of a user's arm.

[0065] For longitudinal adjustment of the armrest 120, this includes at least one armrest rail arrangement 126.

[0066] In particular, an armrest device 200 is designed, which includes the armrest 120 and the armrest rail arrangement 126 for longitudinal adjustment of the armrest 120.

[0067] The armrest assembly 200, in particular the armrest 120, comprises the armrest rail arrangement 126 and the gear unit 126.3, which can be coupled via the drive interface 126.31 to an armrest drive unit 132, for example a motorized armrest drive unit 132.

[0068] In the illustrated embodiment, the armrest rail assembly 126 with gear unit 126.3 is rotated about a longitudinal axis 134 extending in the longitudinal direction x. In other words, the armrest rail assembly 126 can be inclined towards the vehicle seat 100, in particular towards the seat section 102 and / or the backrest 104.

[0069] The armrest rail assembly 126 can, for example, be arranged within the armrest 120 rotated within a range 136 of 30° to 90° or up to 180° relative to the longitudinal axis 134. In the illustrated embodiment, the armrest rail assembly 126 is rotated by 45°. When rotated by 90° or 180°, the drive interface 126.31 for coupling with the armrest drive unit 132 points inwards towards the vehicle seat 100 or vertically downwards, respectively.

[0070] The armrest rail arrangement 126 is arranged and fastened, in particular, on one of the undersides 120.1 of the armrest 120 opposite the arm support surface 124 within the armrest 120.

[0071] In a cavity of the armrest 120, for example in a cavity of an armrest frame structure and / or an armrest cushion, above the armrest rail arrangement 126, at least one of the functional modules 128 can be arranged.

[0072] Furthermore, the armrest device 200 has at least one rail support structure 160 assigned to an armrest rail arrangement 126.

[0073] Fig. Figure 8 shows a front view of a vehicle seat 100 with two longitudinally adjustable armrests 120.

[0074] On each side of the vehicle seat 100, a rail support structure 160 can be provided for attaching the armrest rail assembly 126 to a seat structure 140 and / or to a vehicle floor 118. The respective rail support structure 160 can be designed as a support plate. The respective rail support structure 160 can have a recess 162. The recess 162 can be located in the area of ​​the mounted transmission unit 126.3 and provide a space for arranging the transmission unit 126.3. On one side of the rail support structure 160 opposite the armrest rail assembly 126, it can be connected to the seat structure 140 and / or to a seat connection structure and / or the vehicle floor 118.

[0075] Fig. Figure 9 shows a front view of a vehicle seat 100 with two longitudinally adjustable armrests 120 coupled to each other via an armrest drive unit 132.

[0076] The vehicle seat 100 comprises two armrests 120, each equipped with the previously described armrest rail assembly 126, which is configured for translational longitudinal adjustment of the respective armrest 120 from a home position to an extended position. Each armrest 120 includes the upwardly oriented arm support surface 124. The armrest rail assembly 126 is arranged on an underside 120.1 of each armrest 120. The respective armrest rail assembly 126 is aligned parallel to the arm support surface 124 and / or to the underside 120.1 and / or parallel to a horizontal plane 144. In particular, the respective armrest rails 126.1, 126.2 are aligned parallel to the arm support surface 124 and / or to the underside 120.1 and / or parallel to a horizontal plane 144.

[0077] The armrest drive unit 132 is arranged below or in the area of ​​a seat structure 140 of the seat part 102. The armrest drive unit 132 can be arranged centrally on the seat part 102.

[0078] A flexible output shaft 142 extends from each end of the armrest drive unit 132. Depending on the design of the vehicle seat 100, only one armrest 120 may be provided; in this case, only one flexible output shaft 142 extends from the armrest drive unit 132. The armrest drive unit 132 is, for example, designed as an electric motor.

[0079] The respective flexible output shaft 142 can be coupled to or connected with the associated gear unit 126.3. The respective flexible output shaft 142 can be coupled to or connected with the associated gear unit 126.3 in an arc-shaped manner. The drive interface 126.31 of the gear unit 126.3 can be oriented downwards or inwards towards the seat part 102, or in any position between these directions within the area 136 (shown in the figure). Fig. 3) The armrest drive unit 132 can be arranged outside the armrest 120, for example on the vehicle seat 100, in particular below the vehicle seat 100 or on a longitudinal side of the vehicle seat 100. This allows the armrest 120 to be equipped with only the armrest rails 126.1, 126.2 and the drive unit 126.3, and thus be designed compactly. Reference symbol list 100 vehicle seats 102 Seat section 104 Backrest 106 fittings 108 Rotation axis 110 Longitudinal adjustment device 112 Rail arrangement 114 First rail element (top rail) 116 Second rail element (bottom rail) 118 Vehicle floor 120 Armrest 120.1 Subpage 122 Arrow 124 Armrest area 126 Armrest rail arrangement 126.1 fixed armrest rail 126.2 movable armrest rail 126.3 Gear unit 126.31 Drive interface 126.32 Spindle 126.33 Spindle nut 126.34 Gearbox housing 126.35 Drive screw 128 Functional module 130 adjustment switches 132 Armrest drive unit 134 Longitudinal axis 136 area 138 spindle holders 140 Seat structure 142 Output shaft 144 Horizontal plane 150 fastening elements 160 rail support structure 162 Exclusion 200 Armrest Equipment x longitudinal direction y transverse direction z Vertical direction

Claims

[1] Armrest device (200) for a seat, in particular a vehicle seat (100), with at least one armrest (120) and an armrest rail arrangement (126) which is designed for longitudinal adjustment of the armrest (120) from a basic position to an extended position, characterized by , that - the armrest rail arrangement (126) comprises at least one fixed armrest rail (126.1) and one armrest rail (126.2) which is movable relative to the fixed armrest rail (126.1), in particular which is longitudinally adjustable, and a gear unit (126.3), wherein - the armrest rail arrangement (126) is arranged on the armrest (120) in relation to the longitudinal direction (x) such that a drive interface (126.31) of the gear unit (126.3) is oriented downwards or upwards or in a position therebetween. [2] Armrest device (200) according to claim 1, characterized bythat the armrest rail arrangement (126) is aligned parallel to a horizontal plane (144). [3] Armrest device (200) according to claim 1, characterized by that the armrest rail arrangement (126) is aligned rotated about a longitudinal axis (134). [4] Armrest device (200) according to one of claims 1 to 3, characterized by that the armrest rail arrangement (126) is arranged on an underside (120.1) of the armrest (120) opposite an arm support surface (124). [5] Armrest device (200) according to one of claims 1 to 4, characterized by that the armrest rail arrangement (126) is arranged and fastened within the armrest (120). [6] Armrest device (200) according to one of claims 1 to 5, characterized by that a number of functional modules (128) are arranged in a cavity of the armrest (120) above the armrest rail arrangement (126). [7] Armrest device (200) according to claim 6, characterized by that the number of functional modules (128) comprises at least one table, a cup holder, an operating unit and / or an adjustment switch (130) for longitudinally adjusting the armrest (120). [8] Armrest device (200) according to one of claims 1 to 7, characterized by that the armrest rail arrangement (126) comprises at least one armrest drive unit (132) which can be or is coupled to the gear unit (126.3) via the drive interface (126.31). [9] Armrest device (200) according to claim 8, characterized by that the armrest drive unit (132) is arranged below or in the region of the armrest rail arrangement (126) and can be or is coupled to the gear unit (126.3) via a flexible drive shaft (142). [10] Seat, in particular vehicle seat (100), with at least one seat part (102) and an armrest device (200) arranged in the region of the seat part (102) according to one of the preceding claims. [11] Seat according to claim 10, characterized by in that the armrest device (200) comprises two armrests (120), each of which is provided with an armrest rail arrangement (126), wherein an armrest drive unit (132) of the armrest rail arrangement (126) is arranged below or in the region of a seat structure (140) of the seat part (102) and has a flexible drive shaft (142) on each side, wherein the respective flexible drive shaft (142) can be or is coupled to an associated gear unit (126.3) of the respective armrest rail arrangement (126).

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