Adjustment device with a coupling element

Abstract

Adjustment device (1) for a vehicle seat (2), comprising: - a pivoting lever (10) pivotable about a pivot axis (S1) for adjustable mounting of a seat part (20) of the vehicle seat (2) on a base (21) of the vehicle seat (2), - a drive element (11) mounted on an axis (13), and - a coupling element (12) movably mounted between a coupling position, in which the coupling element (12) establishes a coupling between the drive element (11) and the pivoting lever (10) for pivoting the pivoting lever (10) about the pivot axis (S1), and a disengaging position, in which the coupling of the pivoting lever (10) with the drive element (11) is released via the coupling element (12), characterized by a disengaging element (14) which is rotatable about the axis (13) relative to the coupling element (12) and has arms (140) which the coupling element (12) grasp, and engages with the coupling element (12) in such a way,that the coupling element (12) can be moved between the coupling position and the uncoupling position by a movement of the uncoupling element (14) along the axis (13).

Description

[0001] The proposed solution concerns an adjustment device for a vehicle seat and a vehicle seat.

[0002] Vehicles usually have several rows of seats. In many cases, there are fewer doors than rows of seats on each side of the vehicle, so that in some cases, for example, a second row of seats (seen from the front) is accessible via the driver's or front passenger door. In other examples of vehicles with three rows of seats, the third row of seats is often accessible via doors in the second row. To make getting into the rear row of seats easier, the seats in the front row are usually designed to be able to be moved from a sitting position to an entry position. This entry position is typically referred to as the easy-entry position. In this position, the backrest and / or the seat part of a seat are moved forward compared to the position of use in order to provide greater access to the row of seats behind and thus allow comfortable entry.

[0003] Getting into and out of the rear row of seats is particularly convenient if the vehicle seat in front of it can be electrically adjusted to the easy-entry position.

[0004] However, if, for example, an electric drive motor fails in such designs, exiting the rear row of seats can be significantly more difficult. To ensure easy entry and exit even in such cases, an additional manual release of the backrest using an operating lever can be provided, as described in DE 10 2005 031 968 A1. However, such an additional mechanism makes the construction of the vehicle seat more complex.

[0005] The task is to provide an improved adjustment device.

[0006] This object is achieved by an article having the features of claim 1.

[0007] According to this, an adjustment device for a vehicle seat is specified, comprising: a pivot lever pivotable about a pivot axis for adjustably supporting a seat part of the vehicle seat on a base of the vehicle seat, a drive element, and a coupling element. The coupling element is movably mounted between a coupling position and a decoupling position. In the coupling position, the coupling element establishes a coupling between the drive element and the pivot lever for pivoting the pivot lever about the pivot axis by means of the drive element. In the decoupling position, the coupling of the pivot lever to the drive element is released via the coupling element.

[0008] This is based on the knowledge that, for example, manual adjustment of the pivot lever is particularly easy in the event of a drive driving the drive element failing if the drive element can be decoupled from the pivot lever if necessary. This means, for example, that adjustment to an easy-entry position can be carried out even in the event of a drive failure without the need for additional mechanics; instead, the same mechanics can be used as for adjustment via a drive for the drive element. This makes it possible to provide an adjustment device which is particularly improved in that it enables adjustment of the pivot lever with few components and a simple design. In the uncoupling position, the pivot lever can be pivoted relative to the drive element, for example.

[0009] The coupling element can be mounted so that it can be displaced between the coupling position and the uncoupling position, in particular so that it can be displaced relative to the pivot lever and / or relative to the drive element. This allows for easy movement between the coupling position and the uncoupling position.

[0010] The drive element can be designed in the form of a gear. This allows a motor unit, for example, to be easily connected to drive the drive element.

[0011] For example, the drive element is mounted on a (physical) axis, allowing it to rotate. This allows for a simple and robust design. The pivot lever (fixed or pivotable), for example, is mounted on the axis.

[0012] The coupling element can be displaced along the axis between the coupling and uncoupling positions. This allows the coupling element and the drive element to be coupled together in a resilient manner using a simple design.

[0013] The adjusting device can further comprise a decoupling element. The decoupling element can be rotatable about the axis relative to the coupling element. The decoupling element can engage with the coupling element, in particular such that the coupling element can be moved between the coupling position and the uncoupling position by a movement of the decoupling element, e.g., along the axis. This enables a particularly simple displacement of the coupling element from the coupling position to the uncoupling position.

[0014] The uncoupling element can have one or more sections, e.g., arms, that engage / engage the coupling element. This allows the uncoupling element to pull the coupling element out of the coupling position, particularly in a robust and simple manner.

[0015] The decoupling element can have a bevel. The bevel can be in contact with a bevel defined on the axis. This allows a rotation of the decoupling element to be converted into an axial displacement of the decoupling element, thus making operation particularly easy.

[0016] The adjustment device can comprise a Bowden cable coupled to the decoupling element. This cable is designed, for example, to cause the decoupling element to rotate. This allows for particularly simple operation.

[0017] For example, the axis defines the pivot axis. The axis can be coaxial with the pivot axis. This can further simplify the design of the adjustment device.

[0018] It can be provided that the coupling element, in the coupling position, is positively engaged with the drive element and / or is positively coupled with the pivot lever. In the coupling position, the coupling element can be positively engaged with the drive element and positively coupled with the pivot lever in such a way that a torque applied to the drive element can be transmitted via the coupling element to the pivot lever for pivoting the pivot lever about the pivot axis. This enables a simple drive via the drive element.

[0019] Furthermore, it can be provided that the coupling element is disengaged from the drive element in the uncoupling position and is rotatable relative to the drive element. This allows the pivot lever to be moved independently of the drive element, particularly in the event of a failure of a drive of the adjustment device, such as a motor unit.

[0020] The coupling element can have one or more positive-locking sections, e.g., in the form of pins, for engaging with one or more corresponding positive-locking sections, e.g., in the form of openings, of the drive element to establish the coupling of the pivot lever to the drive element via the coupling element in the coupling position. This allows a resilient and durable coupling between the drive element and the coupling element to be achieved.

[0021] For example, it is provided that the coupling element engages with (at least) one pin attached to the pivot lever in the coupling position and / or in the uncoupling position. This allows a resilient and durable coupling between the coupling element and the pivot lever to be achieved.

[0022] The coupling element can be preloaded into the coupling position, e.g., by a spring, such as a coil spring. Thus, the drive element is normally coupled to the pivot lever, and this coupling only needs to be released when necessary.

[0023] Furthermore, the adjustment device can comprise a motor unit configured to drive the drive element. This allows for particularly comfortable entry and exit in a vehicle with a vehicle seat enclosing the adjustment device. The motor unit comprises, for example, an electric motor and a transmission. The motor unit is configured, for example, to rotate the drive element, for example, by means of a pinion.

[0024] According to one aspect, a vehicle seat is provided, comprising a seat part, a base, and the adjustment device according to any embodiment described herein. Provision can be made for the seat part to be supported on the base via the pivot lever of the adjustment device. Regarding the advantages, reference is made to the above information on the adjustment device.

[0025] The adjustment device comprises, for example, at least one additional pivoting lever. This, together with the pivoting lever, forms a four-bar linkage. This allows for particularly precise adjustment of the seat section (and a backrest mounted on it), especially over a particularly long travel to provide a large entry and exit area.

[0026] The adjustment device can comprise an actuating section and / or a locking mechanism. The locking mechanism, for example, can be used to lock the seat part to the base. By actuating the actuating section, both the locking mechanism can be unlocked and the coupling element can be moved into the uncoupling position. The actuating section is connected, for example, to several Bowden cables, one of which is coupled to the locking mechanism and one to the adjustment device.

[0027] The seat part can be moved together with a backrest of the vehicle seat by means of the adjustment device from a seating position into an entry position that is displaced forward relative to the base, in particular folded forward, also referred to as an easy-entry position.

[0028] The concept underlying the invention will be explained in more detail below with reference to the exemplary embodiments illustrated in the figures. They show: Fig. 1A a vehicle seat in a seating position; Fig. 1B the vehicle seat according to Fig. 1B in a forward entry position; Fig. 2A an adjustment device of the vehicle seat in the position according to Fig. 1A; Fig. 2B the adjustment device according to Fig. 2A in the position of the vehicle seat according to Fig. 1B; Fig. 3 another view of the adjustment device according to Fig. 2A; Fig. 4 an exploded view of the adjustment device according to Fig. 2A; Fig. 5 and Fig. 6 further views of the adjustment device according to Fig. 2A, wherein the adjusting device is shown in a coupling position; Fig. 7 and Fig. 8 further views of the adjustment device according to Fig. 2A, wherein the adjusting device is shown in a decoupling position; Fig. 9 a detailed view of the adjustment device according to Fig. 5 and Fig. 6; and Fig. 10 a detailed view of the adjustment device according to Fig. 7 and Fig. 8.

[0029] Fig. 1A shows a vehicle seat 2 with a seat part 20 and a backrest 22. The backrest 22 is mounted on the seat part 20. The vehicle seat 2 can be mounted to a vehicle floor by means of a base 21. The base 21 supports the rest of the vehicle seat 2.

[0030] In the present case, the base 21 is designed, for example, in the form of a longitudinal adjustment device and allows a longitudinal adjustment of the vehicle seat 2 along a vehicle longitudinal axis. By means of the longitudinal adjustment device, the seat part 20 and the backrest 22 can be moved together along the vehicle longitudinal axis relative to the vehicle floor. The vehicle longitudinal axis is aligned perpendicular to a vehicle height axis and perpendicular to a vehicle width axis. The base 21 comprises two pairs, each consisting of a rail that can be fixed to the vehicle floor, which can also be referred to as floor rail 211, and a seat rail 210 that is mounted thereon so as to be displaceable along the vehicle longitudinal axis. The remaining vehicle seat 2 is mounted on the seat rail 210. The two pairs, of which in the side view of the Fig. 1A, only one is visible, are spaced apart along the vehicle's width axis. The vehicle's width axis is aligned perpendicular to the vehicle's longitudinal axis and perpendicular to the vehicle's height axis.

[0031] The vehicle seat 2 further comprises an adjustment device 1. The adjustment device 1 connects the seat part 20 to the base 21. The adjustment device 1 supports the seat part 20 on the base 21. For this purpose, the adjustment device 1 comprises a pivot lever 10 and, in the example shown, also a further pivot lever 18. The pivot lever 10 is arranged at the front from the perspective of a passenger sitting on the vehicle seat 2, while the further pivot lever 18 is arranged further back. The seat part 20 has a rear end facing the backrest 22 and a front end facing away from the backrest 22. The pivot lever 10 is arranged closer to the front end of the seat part 20 than the further pivot lever 18. For ease of reference, the pivot lever 10 will also be referred to below as the front pivot lever 10, and the further pivot lever 18 as the rear pivot lever 18.

[0032] The front pivot lever 10 is mounted on the base 21, here on the seat rail 210, for pivoting about a first pivot axis S1. For this purpose, a bracket is attached to the seat rail 210, to which the front pivot lever 10 is pivotally mounted. Furthermore, the front pivot lever 10 is mounted on the seat part 20 for pivoting about a second pivot axis S2. A pivoting movement of the front pivot lever 10 relative to the base about the first pivot axis S1 thus causes an adjustment of the seat part 20 relative to the base 21.

[0033] The rear pivot lever 18 is pivotally mounted on the base 21, here on the seat rail 210, about a third pivot axis S3. For this purpose, a bracket is attached to the seat rail 210, to which the rear pivot lever 18 is pivotally mounted. Furthermore, the rear pivot lever 18 is pivotally mounted on the seat part 20 about a fourth pivot axis S4. The numbering of the pivot axes S1-S4 given here is for convenience only.

[0034] The two pivot levers 10, 18 together with the base 21 and the seat part 20 form a four-bar linkage. The vehicle seat 2 also comprises two pivot levers on the other (left) side, which are analogous (or alternatively mirror-imaged) to the two in Fig. 1A visible pivot levers 10, 18 are formed and arranged. The vehicle seat 2 thus comprises a four-bar linkage on each side.

[0035] Fig. 1A shows the vehicle seat 2 in a seating position in which a passenger can sit on the vehicle seat 2. In order to allow easier entry and exit into a row of seats located behind the vehicle seat 2, the vehicle seat 2 can be moved by means of the adjustment device 1 from the position shown in Fig. 1A shown use position into a Fig. 1B shown entry position can be folded forward, also known as easy-entry position.

[0036] In the use position, the pivot levers 10, 18 point backward from the base 21 toward the backrest 22. In the easy-entry position, however, the pivot levers 10, 18 point forward. As a result, the seat section 20 and the backrest 22 are not only tilted forward in the easy-entry position, but are also shifted further forward overall. This creates a particularly large area for entry and exit.

[0037] To adjust the vehicle seat 2 between the use position and the easy-entry position, the adjustment device 1 comprises a motor unit 16. The motor unit 16 comprises an electric motor and a transmission. The motor unit 16 is operatively connected to the front pivot lever 10 and is configured to pivot it about the first pivot axis S1 relative to the base 21.

[0038] Furthermore, the adjustment device 1 comprises a locking mechanism 17. By means of the locking mechanism 17, the seat part 20 can be locked to the base 21, in this case to the seat rail 210.

[0039] For this purpose, the example of Fig. 1A and Fig. 1B, a bolt 170 is attached to each of the seat rails 210. A lock 171 is mounted on the seat part 20 for each bolt 170, aligned with the respective bolt 170. The locks 171 are arranged at the rear end of the seat part 20, which is adjacent to the backrest 22. The locks 171 each have a hook configured to engage behind the respective bolt 170 to lock it. The locks 171 can be opened, in this case by means of one (or one each) electric actuator.

[0040] To move the vehicle seat 2 from the position of use according to Fig. 1A into the easy-entry position according to Fig. 1B, the lock 17 can be opened electrically, and the front pivot lever 10 can be pivoted by means of the motor unit 16. Conversely, the vehicle seat 2 can be transferred from the easy-entry position to the use position by first pivoting the front pivot lever 10 back by means of the motor unit 16 and then locking the locks 171 with the bolts 170.

[0041] However, if the drive unit 16 fails, for example due to a defect in the motor or a power supply failure of the motor unit 16, the vehicle seat 2 can no longer be electrically adjusted between the use position and the easy-entry position. To enable such an adjustment in such cases, the locking device 1 has a coupling mechanism, which will be described in more detail below. In the example shown, an actuating section 152 is provided, which can be manually actuated to enable manual adjustment between the use position and the easy-entry position. In the present case, the actuating section 152 is designed, for example, in the form of a hand strap. This is coupled to several Bowden cables 15, in this case with one Bowden cable 15 to the coupling mechanism and one Bowden cable 15 to each of the two locks 171.An actuation (here: a pull) of the actuating section 151 thus simultaneously causes an unlocking of the locks 171 and a decoupling of the motor unit 16 from the front pivot lever 10.

[0042] Fig. 2A and Fig. 2B show the adjustment device 1 in the positions of the vehicle seat 2 according to Fig. 1A ( Fig. 2A) or according to Fig. 1B ( Fig. 2B).

[0043] The adjustment device 1 of the vehicle seat 2 comprises the front pivot lever 10 already described above, which is mounted on the base 21 so as to be pivotable about the first pivot axis S1 for the adjustable mounting of the seat part 20 of the vehicle seat 2 on the base 21.

[0044] The adjusting device 1 further comprises a drive element 11, which in this case is designed in the form of a gear with a plurality of teeth 111. The teeth 111 form an external toothing. The teeth 111 of the drive element 11 engage with the teeth of a pinion 160 of the motor unit 16. The pinion represents part of the transmission of the motor unit 16 and is driven by the motor of the motor unit 16. Activation of the motor unit 16 thus causes rotation of the drive element 11. The drive element 11 is rotatably mounted about an axis 13, which in the example shown runs coaxially to the first pivot axis S1 of the front pivot lever 10. In this case, the axis 13 defines the first pivot axis S1.

[0045] Furthermore, the adjusting device 1 comprises a coupling element 12 which is mounted on the axis 13 so as to be movable between a coupling position and a decoupling position.

[0046] In the coupling position, the coupling element 12 establishes a coupling between the drive element 11 and the pivot lever 10 for pivoting the pivot lever 10 about the first pivot axis S1. In the uncoupling position, this coupling of the first pivot lever 10 with the drive element 11 is opened via the coupling element 12. In the coupling position of the coupling element 12, a rotation of the drive element 11 about the axis 13 is thus (fixedly) coupled with a rotation of the front pivot lever 10 about the axis 13. In the uncoupling position of the coupling element 12, the front pivot lever 10 is rotatable about the axis 13 independently of the drive element 11 (namely, in particular between the Fig. 2A and Fig. 2B shown positions, pivotable).

[0047] The Fig. 2A and Fig. 2B each show the coupling element 12 in the coupling position. In this position, pins 120 of the coupling element 12 engage in openings 110 in the drive element 11. This positively connects the coupling element 12 and the drive element 11 with respect to rotation about the axis 13. In the example shown, five pins 120 and five corresponding openings 110 are provided, although other numbers are also conceivable.

[0048] The front pivot lever 10 further comprises a pivot bearing 101 with a screw 103, on which the seat part 20 is pivotally mounted.

[0049] Furthermore, the adjusting device 1 comprises a decoupling element 14 for transferring the coupling element 12 between the coupling position and the decoupling position.

[0050] The design of the decoupling element 14 will now be described with reference to the Fig. 3 and Fig. 4 will be explained in more detail.

[0051] A bearing sleeve 131 is mounted on the axle 13. In this case, the bearing sleeve 131 is firmly connected to the axle 13. The drive element 11 is rotatably mounted on the bearing sleeve 131, in this case with a central opening. A bushing 132 is also arranged between the bearing sleeve 131 and the drive element 11, which forms a plain bearing with the drive element 11. A ring 133 secures the drive element 11 in this arrangement.

[0052] The front pivot lever 10 has a plurality of openings 102. In the present case, one opening 102 is provided for the pivot bearing 101, although it would also be conceivable to provide the pivot bearing differently, e.g., by welding. One opening 102 is provided for fastening the front pivot lever 10 to the axle 13, namely by means of a screw in the example shown. The front pivot lever 10 is mounted (rotatably or fixedly) at the axial end of the axle 13. Alternatively, the front pivot lever 10 could, for example, be welded to the axle 13. One opening 102 is provided for mounting a pin 100 (here, too, another type of mounting or design of a pin is conceivable).

[0053] The pin 100 attached to the pivot lever runs parallel to the axis 13 and eccentrically to it (also with respect to the first pivot axis S1).

[0054] The coupling element 12 and the decoupling element 14 are arranged between the drive element 11 and the pivot lever 10. The coupling element 12 is in turn arranged between the decoupling element 14 and the drive element 11.

[0055] The coupling element 12 is disc-shaped. It is rotatably mounted on the axis 13, in this case on the bearing sleeve 131. Furthermore, the coupling element 12 is mounted axially displaceably along the axis 13 (on the bearing sleeve 131). The coupling element 12 has an outer circumferential surface 121. The surface 121 has a circular cylindrical shape.

[0056] The decoupling element 14 rests flat against the coupling element 12. The decoupling element 14 has a plurality of arms 140 that surround the outside of the coupling element 12. The decoupling element 14 is mounted on the bearing sleeve 131 on one side of the coupling element; the arms 140 engage over the outer surface 121 of the coupling element 12 and extend to the other side of the coupling element 12. The decoupling element 14 is thus held positively on the coupling element 12, but is rotatable relative to it. During such a rotational movement, the arms 140 slide along the outer surface 121.

[0057] A spring 19, here a spiral spring, rests on the front pivot lever 10 on one side and is preloaded against the decoupling element 14 on the other. The spring 19 urges the decoupling element 14 with the coupling element 12 against the drive element 11. Thus, the spring 19 urges the pins 120 of the coupling element 12 into engagement with the openings 110 of the drive element 11, which are designed to match the pins 120. It should be noted that pins and openings could also be reversed, and other positive-locking elements could also be provided.

[0058] In the coupling position, the coupling element 12 is positively engaged with the drive element 11 to transmit torque. In the uncoupling position, the coupling element 12 is disengaged from the drive element 11 and is rotatable relative to it.

[0059] In order to transfer the coupling element 12 from the coupling position to the uncoupling position, a bevel 130 is provided on the axis 13. In the present case, the bevel 130 is formed on the bearing sleeve 131. The uncoupling element 14 also has a bevel 141, see in particular Fig. 9 and Fig. 10. The two bevels 130, 141 extend around the first pivot axis S1, in this case corresponding to the section of a helix. The two bevels 130, 141 abut one another. If the uncoupling element 14 is rotated around the first pivot axis S1, the bevel 141 of the uncoupling element 14 slides along the bevel 130 of the axis 13. As a result, the uncoupling element 14 is displaced along the axis 13, in this case, screwed along it. Since the coupling element 12 is displaceably mounted relative to the pivot lever 10 and the drive element 11 between the coupling position and the uncoupling position, the latter is carried along the axis 13 by the uncoupling element 14. The uncoupling element 14 rotates relative to the coupling element 12.

[0060] The coupling element 12 engages with the pin 100 attached to the pivot lever 10 in both the coupling and uncoupling positions. The pin 100 is inserted into an opening 122 in the coupling element 12. When adjusting between the coupling and uncoupling positions, the opening 122 slides along the pin 100.

[0061] In this case, the uncoupling element 14 has four arms 140. Each of the arms 140 projects radially outward, then extends in the axial direction (beyond the casing section 121 of the coupling element 12), and then radially inward again to an inward-facing end edge. There is a greater distance between two of the arms 140 of the uncoupling element 14 than between the remaining arms 140. The pin 100 of the front pivot lever 10 extends through this free space. The free space allows the rotation of the uncoupling element 14 far enough to slide along the slope 130, so that the coupling element 12 is transferred from the coupling position to the uncoupling position.

[0062] Fig. 5 and Fig. 6 show the coupling position. The spring 19 presses the decoupling element 14 against the coupling element 12 and thus against the drive element 11, as in Fig. 6 is illustrated by an arrow. The pin 100 of the front pivot lever 10 is arranged on one of the two most spaced-apart arms 140 of the decoupling element 14, and in this case rests against it.

[0063] In this position, the coupling element 12 is positively engaged with the drive element 11 and is positively coupled to the pivot lever 10, so that a torque applied by the motor unit 16 to the drive element 11 can be transmitted via the coupling element 12 to the pivot lever 10 for pivoting the pivot lever 10 about the first pivot axis S1.

[0064] Now, as in Fig. 7 using an arrow, the uncoupling element 14 rotates relative to the front pivot lever 10, then the two bevels 130, 141 slide along one another. The rotation of the uncoupling element 14 is brought about in this case by the aforementioned Bowden cable 15. For this purpose, a pull cable 151 of the Bowden cable 15 is connected to the uncoupling element 14, specifically in this specific example, attached to a pin 142 of the uncoupling element 14. The pin 142 of the uncoupling element 14 protrudes axially therefrom. The pull cable 151 runs in a sheath 150, which is supported, for example, on the base 21. The pull cable 151 is connected via its other end to the actuating section 152.

[0065] As a result of the rotation of the decoupling element 14, it is displaced along the axis 13, whereby the coupling element 12 is displaced along the axis 13 and thus pulled off the drive element 11, as indicated by an arrow in Fig. 8. In the uncoupling position then reached, the coupling element 12 is thus not engaged with the drive element 11.

[0066] By actuating the actuating section 152, both the locking mechanism 17 is unlocked and the coupling element 12 is moved into the uncoupling position.

[0067] Fig. Figure 9 illustrates with an arrow the pressure of spring 19 on the uncoupling element 14, which forces the coupling element 12 into the coupling position. The bevels 130, 141 abut one another with their respective end sections. A region of the bevel 130 of the axle 13 facing the front pivot lever 10 is exposed.

[0068] Fig.Figure 10, in contrast, illustrates the movements of the decoupling element 14 following actuation (by means of the Bowden cable 15). Initially, a pull occurs via the pull cable 151 (movement B1). This results in a rotation of the decoupling element 14 (movement B2). As a result, the bevel 141 of the decoupling element 14 slides along the bevel 130 of the axis 13 (movement B3), which ultimately causes a displacement of the decoupling element 14 and thus of the coupling element 12 along the axis 13 (movement B4).

[0069] The incline of the bevels 130, 141 is, for example, 40°. The spring 19 exerts a force of 100 N or more. The decoupling element 14 is made of, for example, polypropylene with 30% glass fiber (PP GF30). The drive element 11, the coupling element 12, the bearing sleeve 131, and / or the pivot levers 10, 18 are made of, for example, steel.

[0070] The described solution allows easy entry and exit even if the motor unit 16 fails. Only a few parts are required. Because the same mechanism is used for both the motorized and manual adjustments, the overall weight is low and only a small installation space is required. An additional pivoting mechanism for the backrest 22 can be omitted, making the backrest 22 more comfortable and lowering the center of gravity of the vehicle seat 2. Furthermore, the vehicle seat 2 can be locked in the easy-entry position using the coupling element, preventing unintentional adjustment. List of reference symbols 1 adjustment device 10 (front) swivel lever 100 pens 101 swivel bearing 102 Opening 103 Screw 11 Drive element 110 Opening 111 tooth 12 Coupling element 120 pen 121 lateral surface 122 Opening 13 Axis 130 slope 131 bearing sleeve 132 socket 133 rings 14 Uncoupling element 140 Arm 141 slope 142 pen 15 Bowden cable 150 cover 151 traction rope 152 operating section 16 Motor unit 160 pinion 17 Locking 170 bolts 171 Castle 18 additional (rear) pivot lever 19 spring 2 vehicle seats 20 Seat part 21 Base 210 seat rail 211 floor rail 22 Backrest B1-B4 Movement S1-S4 swivel axis QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2005 031 968 A1

[0004]

Claims

[1] Adjusting device (1) for a vehicle seat (2), comprising: - a pivoting lever (10) pivotable about a pivot axis (S1) for adjustably mounting a seat part (20) of the vehicle seat (2) on a base (21) of the vehicle seat (2), - a drive element (11) and - a coupling element (12) which is movably mounted between a coupling position in which the coupling element (12) establishes a coupling between the drive element (11) and the pivoting lever (10) for pivoting the pivoting lever (10) about the pivot axis (S1), and a decoupling position in which the coupling of the pivoting lever (10) to the drive element (11) via the coupling element (12) is released. [2] Adjusting device (1) according to claim 1, characterized by that the coupling element (12) is displaceably mounted between the coupling position and the uncoupling position relative to the pivot lever (10) and / or to the drive element (11). [3] Adjusting device (1) according to claim 1 or 2, characterized by that the drive element (11) is designed in the form of a gear. [4] Adjusting device (1) according to one of the preceding claims, characterized by that the drive element (11) is rotatably mounted on an axis (13). [5] Adjusting device (1) according to claim 4, characterized by that the coupling element (12) is displaceable along the axis (13) between the coupling position and the uncoupling position. [6] Adjusting device (1) according to claim 4 or 5, characterized by a decoupling element (14) which is rotatable relative to the coupling element (12) about the axis (13) and is engaged with the coupling element (12) such that the coupling element (12) is movable between the coupling position and the decoupling position by a movement of the decoupling element (14) along the axis (13). [7] Adjusting device (1) according to claim 6, characterized by that the decoupling element (14) has arms (140) which engage around the coupling element (12). [8] Adjusting device (1) according to claim 6 or 7, characterized by that the decoupling element (14) has a bevel (141) which bears against a bevel (130) fixed to the axis (13). [9] Adjusting device (1) according to one of claims 6 to 8, characterized by a Bowden cable (15) coupled to the decoupling element (14). [10] Adjusting device (1) according to one of claims 4 to 9, characterized by that the axis (13) defines the pivot axis (S1) and runs coaxially to the pivot axis (S1). [11] Adjusting device (1) according to one of the preceding claims, characterized bythat the coupling element (12) in the coupling position is positively engaged with the drive element (11) and is positively coupled to the pivot lever (10), so that a torque applied to the drive element (11) can be transmitted via the coupling element (12) to the pivot lever (10) for pivoting the pivot lever (10) about the pivot axis (S1). [12] Adjusting device (1) according to claim 11, characterized by that the coupling element (12) is disengaged from the drive element (11) in the uncoupling position and is rotatable relative to the drive element (11). [13] Adjusting device (1) according to one of the preceding claims, characterized by that the coupling element (12) has pins (120) for engaging with openings (110) of the drive element (11) for establishing the coupling of the pivot lever (10) to the drive element (11) via the coupling element (12) in the coupling position. [14] Adjusting device (1) according to one of the preceding claims, characterized by that the coupling element (12) engages with a pin (100) attached to the pivot lever (10) both in the coupling position and in the uncoupling position. [15] Adjusting device (1) according to one of the preceding claims, characterized by that the coupling element (11) is pretensioned into the coupling position by means of a spring (19). [16] Adjusting device (1) according to one of the preceding claims, characterized by a motor unit (16) arranged to drive the drive element (11). [17] Vehicle seat (2) with a seat part (20) and a base (21), characterized by the adjusting device (1) according to one of the preceding claims, wherein the seat part (20) is supported on the base (21) via the pivot lever (10) of the adjusting device (1). [18] Vehicle seat (2) according to claim 17, characterized bythat the adjusting device (1) comprises at least one further pivoting lever (18) which forms a four-bar linkage with the pivoting lever (10). [19] Vehicle seat (2) according to claim 17 or 18, characterized by that the adjusting device (1) comprises an actuating section (152) and a locking mechanism (17) by means of which the seat part (20) can be locked to the base (21), wherein by actuating the actuating section (152) both the locking mechanism (17) can be unlocked and the coupling element (12) can be moved into the uncoupling position. [20] Vehicle seat (2) according to one of claims 17 to 19, characterized by that the seat part (20) can be moved together with a backrest (22) of the vehicle seat (2) by means of the adjusting device (1) from a seating position into an entry position folded forward relative thereto with respect to the base (20).

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