DE102016207524A1 - Adjustment device for a vehicle seat and control method - Google Patents

Abstract

The present invention relates to an adjusting device for adjusting a first seat part (D, K, R, ST, T) of a vehicle seat (F1, F2) relative to at least one second seat part (R, SA, SU, ST) of the vehicle seat (F1, F1). F2), wherein the adjusting device (VE1-VE4) has an electric motor drive (AE), by means of which an adjusting force can be generated, via a self-locking adjustment mechanism of the adjusting (VE1-VE4) to the first seat part (D, K, R, ST , T) and / or an adjustment part of the adjusting device (VE1-VE4) is transferable. According to the invention, the adjusting device (VE1-VE4) has a circuit and / or control electronics (6) which is set up by shorting the electromotive drive (AE) to an adjustment of the first seat part (D, K, R, ST, T). and / or to produce an adjustment of the adjustment counteracting moment in order to keep the first seat part (D, K, R, ST, T) and / or the adjustment part in a predetermined adjustment.

Description

The invention relates to an adjusting device according to the preamble of claim 1.

Such an adjusting device is provided for the adjustment of a first seat part of a vehicle seat relative to at least a second seat part of the vehicle seat. The first seat part is, for example, a headrest or a through-loading which is adjustable relative to a backrest of the vehicle seat, or a backrest which is pivotable relative to a seat bottom part of the vehicle seat. The first seat part may also be a seat cushion support which is adjustable, for example to set a seat depth. A first seat part may also be a seat base, which is longitudinally displaceable to a bottom rail of a rail assembly of the vehicle seat.

The adjusting device has an electromotive drive, by means of which an adjusting force can be generated, which can be transmitted via a self-locking adjustment mechanism of the adjusting device to the first seat part and / or an adjusting part of the adjusting device. The electromotive drive can serve to control or at least assist a power-operated adjustment of the first seat part. An adjustment, the power-operated by the electric motor drive is adjustable, for example, can be used for unlocking or locking, so over here the adjustability of the first seat part is controlled.

Basically, the provision of electric motor drives in modern vehicle seats has become perfectly common. Regardless of this, it is regularly necessary for an adjustable first seat part of a vehicle seat to hold the first seat part and / or an adjustably mounted adjusting part for the adjustability of the first seat part in a predetermined adjustment position. For example, it is known to be able to fold a backrest from a use position into a so-called easy-entry position, in order to facilitate access to a vehicle seat of a first or second row of seats to an underlying vehicle seat or cargo space. Here, in particular, the backrest is regularly locked in a folded adjustment position via an adjustment mechanism. The mechanism to be provided for this purpose is generally comparatively complicated and complex.

The invention has for its object to further improve an adjustment of the type mentioned above and in particular in non-Crashrelevanten adjustment positions of a first seat part of a vehicle seat to provide a simpler way to hold the first seat part and / or an adjustment in a predetermined adjustment.

This object is achieved with an adjustment of claim 1.

Hereinafter, it is provided that the adjusting device has a circuit and / or control electronics, which is adapted by shorting an electric motor drive an adjustment of the first seat part and / or an adjustment of the adjusting counteracting moment, so for example a braking or holding torque, to produce to hold the first seat part and / or the adjustment part in a predetermined adjustment. About the short-circuiting of the electromotive drive thus an electrically controllable braking or holding torque is generated, by means of which the first seat part and / or the adjusting member is held in a predetermined adjustment, without that for this purpose coupled to the electric motor drive adjustment designed self-locking or complex mechanical interlock would have to be equipped. For example, by means of the short-circuiting of the electromotive drive, a stiffness and / or a locking moment can be generated, which is comparable to a self-locking adjusting mechanism. The circuit and / or control electronics can thus be particularly adapted to simulate by the short-circuiting of the electric motor drive a self-locking or stiffness of the adjustment.

A correspondingly designed control electronics has, for example, a control logic via which the short-circuiting of the electromotive drive is selectively controlled, for example, as a function of an operating event or a plurality of operating events. Thus, the circuit and / or control electronics comprise a control unit with a control logic, by means of which upon reaching a desired adjustment position (within the predetermined adjustment range) the electromotive drive is selectively short-circuited. Alternatively or additionally, at least one button and / or a switch, in particular a relay may be present, by means of which the electromotive drive is selectively short-circuited upon reaching the adjustment range (by the first seat part and / or the adjusting part).

In particular, it is not mandatory in this connection that the first seat part or the adjusting part of the adjusting device can be adjusted by means of an electric power via the electromotive drive. It is provided in an embodiment variant, for example, that the electric motor drive is exclusively provided and arranged to hold the first seat part and / or the adjustment part in an adjustment by the drive is shorted, but otherwise remains inactive. For example, the electromotive drive may also be passively or actively decoupled from the adjusting mechanism in order to adjust the first seat part independently of the electromotive drive. However, if the predetermined adjustment range, for example, achieved by an easy-entry position of the backrest, the electric motor drive is coupled and short-circuited to lock the seat part over here in an adjustment.

The adjustment range is typically defined as an area around a certain adjustment position from which the first seat part and / or the adjustment part should at most be slightly displaceable. In the case of a backrest as the first seat part, this may be, for example, an adjustment range predetermined by an easy-entry position of the backrest. In the easy-entry position of the backrest, this should allow easier access to a vehicle compartment, with a slight displacement of the backrest by a user, e.g. when entering or leaving the vehicle is tolerable, as long as the backrest basically remains a folded-forward position. The predetermined adjustment range thus defines, for example, as a tolerance range around a predetermined adjustment position in which a previous adjustment of the first seat part and / or the adjustment part has been stopped.

The torque generated electrically by short-circuiting of the electromotive drive, which counteracts an adjustment of the first seat part and / or an adjustment of the adjustment part, can in principle be provided in addition or independent of a mechanical lock for securing in the adjustment position. In possible embodiments, however, a mechanical lock can be omitted hereby. This is particularly advantageous in non-crash related adjustment positions, i.e., adjustment positions in which the vehicle seat can not be occupied by a seat occupant. This is by a self-locking of the adjustment, which is simulated by the short-circuiting of the electric motor drive only, a sufficient locking in a predetermined adjustment possible, which is also extremely flexible adjustable, especially with regard to the specification of the adjustment, in a short-circuiting of the electromotive Drive should take place.

The circuit and / or control electronics can be set up in possible developments, for adjusting in a predetermined (nominal) adjustment range to readjust the applied torque, provided that a displacement force applied to the output side to an adjustment of the first seat part and / or the adjustment part of the target Adjustment has led or would lead. The circuit and / or control electronics is thus arranged in this case to vary a producible via the electric motor drive holding torque in terms of height and effective direction to maintain a desired adjustment position of the first seat part and / or the adjustment and any deviations that for example, by forces applied on the output side, to compensate.

In a variant, the circuit and / or control electronics may be arranged to cancel a short circuit of the electromotive drive for an adjustment of the seat part and / or the adjusting part. For example, it can be provided that the electromotive drive in case of inactivity, i. no controlled by him power-operated adjustment, always short-circuited to simulate a self-locking and / or stiffness of the adjustment mechanism. But then specifically to allow a manual adjustment without increased force, if this adjustment precedes pressing an operating element by a user and / or remains actuated during the adjustment, the short circuit can be selectively canceled by an interrupt signal is generated upon actuation of the control element and leads to the circuit and / or control electronics to cancel the short circuit.

As already mentioned, the first seat part can be, for example, a through-loader, a center armrest, a headrest, a backrest, a seat bottom part of a seat underframe or a seat cushion support of the vehicle seat, which can be adjusted relative to a floor-fixed rail of a rail arrangement.

For example, the vehicle seat may have a backrest, which is adjustable from a use position into a so-called easy-entry position in which the backrest is folded forward in the direction of a seat cushion and, if appropriate, the seat underframe is displaced forward along a seat longitudinal direction in order to facilitate access for a person to allow for a rear row of seats. Here, the circuit and / or control electronics may be configured to hold the backrest by shorting the electric motor drive in a predetermined by the easy-entry position adjustment range relative to a seat bottom of the vehicle seat. An applied by the shorting of the electromotive drive braking or holding torque is thus used to stabilize the easy-entry position and the associated adjustment position of the backrest. The fact that the backrest has assumed a predetermined adjustment position is detected electronically, for example, via a button, a switch or a control logic of a control device.

The short circuit of the electromotive drive in this case serves exclusively for locking the backrest in a pre-folded adjustment position corresponding to the easy-entry position. In a position of use of the backrest it is separately crash-proof locked via an additional locking mechanism.

In one embodiment, the backrest of the vehicle seat on the adjustment manually or externally powered in the easy-entry position adjustable, with a manual adjustment is not blocked by the self-locking adjustment mechanism and the electric motor drive or a power-operated adjustment via the self-locking adjustment mechanism and the electric motor drive he follows. The circuit and / or control electronics is then set up to hold the backrest by shorting the electromotive drive in a predetermined (comfort) adjustment as soon as the backrest occupies the easy-entry position. The electromotive drive can be provided exclusively to hold the backrest in the predetermined adjustment of the easy-entry position. In one embodiment, the electromotive drive but also provided and configured to support the manual adjustment in the easy-entry position and to generate a corresponding adjustment. Alternatively or additionally, it may be provided that by means of the electric motor drive an adjustment in the easy-entry position and / or a power-operated reset the backrest is enabled in a position of use.

In one embodiment, regardless of the adjustability of the backrest in an easy-entry position - the electric motor drive for a power-operated adjustment of the backrest may be provided, the drive is short-circuited when the backrest is stationary. In this way, a self-locking and / or a stiffness is simulated via the short-circuited electromotive drive, when the machine is at rest and moves e.g. is located in an erected use position or an easy-entry position located backrest by an attacking on the backrest itself, so usually output side adjustment.

The backrest can be adjusted in addition to the easy-entry position in a Cargoposition on the seat bottom. In the cargo position, the backrest is maximally folded forward and serves to increase the loading space and / or - especially in a cargo position in which the backrest extends with its rear side along a horizontal - the provision of a storage area (table function). In a backrest which can be folded into a cargo position, the electromotive drive can be provided for a power-operated adjustment of the backrest from the cargo position to an upright use position. The circuit and / or control electronics may also be configured to cancel a short circuit of the electric motor drive for a manual adjustment of the backrest in the easy-entry position until the easy-entry position is reached. The electromotive drive is thus on the one hand for a power-operated adjustment of the backrest from the Cargoposition used in a position of use (possibly vice versa) and shorted inactivity to counteract improper adjustment and apply a corresponding holding or braking torque. In order to allow the easy-entry position to be taken by manual adjustment of the backrest and in this case not create a counteracting moment, the short circuit can be purposefully interrupted until the easy-entry position is reached. After reaching the easy-entry position, the electromotive drive is again short-circuited, so that counteracted via the short-circuited drive an adjustment from the predetermined for the easy-entry position adjustment of the backrest.

In order to enable a targeted interruption of the short circuit, the circuit and / or control electronics may be coupled to an operating element which can be actuated manually by a user in order to adjust the backrest into the easy-entry position. Such an operating element is provided, for example, on the vehicle seat, e.g. in the form of an operating lever.

Alternatively or in addition, means for canceling the short circuit of the electromotive drive, e.g. be provided on the vehicle seat and in particular at its rear or bottom to allow for a panic exit after a crash case, a manual adjustment of the backrest. For example, vehicle seats of a rear row of seats should, after a crash, be as simple as possible and as independent as possible of an electronics that might no longer be fully functional after an accident can be folded forward to allow vehicle occupants a quick exit from the vehicle compartment. In this context, it is spoken of a panic exit and thus an adjustability of a backrest, which should possibly be used only after a crash case.

In a variant, for example, means for receiving an electronically generated interrupt signal are provided and the circuit and / or control electronics is set up, upon receipt of the interrupt signal, the short circuit of the electric motor drive repealed. If a self-locking and / or a stiffness is simulated on the short-circuited drive so normally, this should be specifically disabled for a panic exit, so that an adjustment of the backrest possibly still opposes an easy-to-release mechanical locking, which is provided for example via a snap fitting.

In one embodiment, the interrupt signal is automatically generated in response to a sensed crash event representative of an impending or already occurred crash event, such as a crash event. a deformation of a specific vehicle part and / or a detected impact of the vehicle on an obstacle. About the circuit and / or control electronics thus the short circuit of the electric motor drive on the backrest is automatically canceled.

In one embodiment, the interrupt signal is obtained by manually operating a control, e.g. an operating element provided on the vehicle seat, can be generated. Here, the user is then actuated by the user for panic exit and generates an electronic interrupt signal to cancel the short circuit.

To further increase the reliability can be provided alternatively or additionally means for mechanically interrupting a line connection, being canceled by interruption of a line connection, the short circuit of the electric motor drive. In this variant, therefore, the short circuit for the panic exit is mechanically canceled, e.g. through a breaker contact. The means for mechanical interruption may in this case also comprise an operating element on the vehicle seat, such as e.g. an adjustable control lever, an extendable flap or a depressible control knob.

In one exemplary embodiment, the adjusting device comprises an unlockable detent fitting in order to be able to pivot the backrest of the vehicle seat relative to a seat bottom part of the vehicle seat. Here, the circuit and / or control electronics may be arranged to lock the backrest by shorting the electromotive drive in a predetermined adjustment relative to a seat bottom of the vehicle seat. This variant includes, for example, that a locking of the different degrees inclined backrest in several approved use positions is possible on the detent fitting. However, the holding of the backrest in a corresponding with the easy-entry position forward folded adjustment is realized via the short-circuited electric motor drive. This electromotive drive can also - but need not - be provided for a power-operated adjustment of the backrest in the easy-entry position and / or for unlocking the locking fitting.

In one embodiment variant, the adjusting part of the adjusting device which is adjustable by means of the electromotive drive to be short-circuited is part of a lock in order to lock the first seat part relative to the second seat part. The circuit and / or control electronics is then set up in this variant, by shorting the electromotive drive to keep the adjustment part in an adjustment, in which an adjustment of the first seat part is made possible relative to the second seat part. The braking or holding torque generated by shorting the electromotive drive thus serves to hold the adjustment in a release position in which an adjustment of the first seat part is made possible.

A refinement based thereon provides, for example, that the adjusting device comprises a latching fitting, by means of which a backrest of the vehicle seat is locked in a locked state of the latching fitting relative to a seat bottom part of the vehicle seat. In an unlocked state of the detent fitting, therefore, the backrest is pivotable relative to the seat bottom. The adjustment is here at then part of a locking mechanism provided via the lock and between at least two adjustment manually or externally operated (for example, via the short-circuited electric motor drive) adjustable to lock the locking fitting or unlock. For example, it is thus in the adjustment part about a pivotally mounted pawl of a detent fitting. The circuit and / or control electronics is set up in such a variant to keep the adjusting part in an adjustment by shorting the electromotive drive, in which the locking fitting is unlocked.

An adjusting device designed according to the invention can in principle be part of a drive for the adjustment of a through-loading, a headrest, a center armrest or a seat depth adjustment. Alternatively or additionally, an actuator can be formed via the electromotive drive to be short-circuited, via which an adjustment part can be adjusted in an electromechanical lock. Also in connection with an adjusting mechanism for the easy-entry functionality of a vehicle seat an adjusting device according to the invention can be used.

Furthermore, the invention also relates to a method for controlling an adjustment of a first seat part of a vehicle seat relative to at least one second seat part of the vehicle seat.

Here, an adjusting device, for example, an inventively designed adjustment, provided with an electric motor drive by means of which an adjusting force is generated, which is transmitted via a self-locking adjustment mechanism of the adjustment to the first seat part and / or an adjustment of the adjustment. By virtue of the adjusting force transmitted via the self-locking adjustment mechanism, the first seat part and / or the adjusting part can assume a certain adjusting position with external force or the use of this adjusting position can be assisted by external force, although this is not mandatory. Rather, it is crucial according to the invention that, when a predetermined adjustment position of the first seat part or the adjustment part is reached, the electromotive drive is short-circuited in order to generate a moment which counteracts an adjustment of the first seat part and / or the adjustment part from an adjustment range about the predetermined adjustment position. The electromotive drive thus serves according to the invention initially as a means for an electrically controllable locking or locking of the first seat part and / or the adjusting part. Whether optionally the electromotive drive (also) is used to power-operated to adjust the first seat part and / or the adjustment, is secondary.

Since a control method according to the invention can also be implemented by means of an adjusting device designed according to the invention, advantages and features of embodiments of an adjusting device according to the invention explained above and below also apply to variants of a control method according to the invention and vice versa.

The attached figures exemplify possible embodiments of the invention

Hereby show:

1 second and third rows of seats with vehicle seats, which are equipped with at least one adjusting device according to the invention;

2 an electric motor drive with a schematically illustrated circuit and / or control electronics of an adjusting device according to the invention;

3 a flowchart illustrating a possible embodiment of a control method according to the invention.

The 1 shows by way of example two rows of seats SR1 and SR2 with a plurality of vehicle seats F1 and F2 for a second and third row of seats of a vehicle. The individual vehicle seats F1 and F2 each have a seat underframe SU which, in the case of the front seat row SR1, is mounted longitudinally displaceably via a rail arrangement SA. Part of the seat base SU are each a plurality of seat base ST, on which a backrest R of the respective vehicle seat F1 and F2 is pivotally mounted. On the backrest R adjustable headrests K are provided. In the case of the first row of seats SR1 further forward, a fold-through passage D is additionally provided. Further, a seat cushion support T is adjustably mounted on the seat bottom parts ST of the front seat row SR 1 for each vehicle seat F1, for example, to be able to adjust an inclination of the seat cushion or a seat depth.

Different adjustment devices VE1, VE2, VE3 and VE4 are provided for the different adjustable seat parts or seat components of the respective vehicle seat F1 or F2. A first adjustment device VE1 is provided, for example, for the adjustment of the seat cushion support T. A second adjusting device VE2 serves, with the use of at least one detent fitting or several detent fittings, the adjustable mounting of a backrest R of the first row of seats SR1. A third adjusting device VE 3 allows pivoting and folding a backrest R of the second row of seats SR2. A fourth adjusting device VE 4 also serves to retract and extend the headrest K to a backrest R.

The individual adjusting device in VE1 to VE4 are provided for a manual and / or power-operated adjustment of the respective seat component and thus a first seat part, for example in the form of the through D, the headrest K, the backrest R, the seat base ST or the seat cushion support T. , While in each case a crash-proof locking of the respective adjustably mounted seat component via a separate locking mechanism, for example, a through-loading or bottom lock, is realized, at least one of the adjusting VE1 to VE4 an electric motor drive AE, which - for holding a predetermined adjustment of the respective seat component D, K, R, ST or T or an adjustment part of an associated lock - targeted shorted.

By short-circuiting the electromotive drive AE, e.g. In this case generates a braking or holding torque, which counteracts an adjustment of the respective seat component D, K, R, ST or T from a predetermined adjustment position. This adjustment position is then usually an adjustment position which is not relevant to crash, that is, in which no seat occupant can take place on the respective vehicle seat F1 or F2 as intended. Although it is readily achievable via the short-circuiting of the respective electromotive drive AE that the respective seat component is stabilized in a predetermined adjustment position and retains this, in particular at elevated output-side forces, which are initiated for example by pulling or pressing a user to the respective seat component. The significantly higher loads on a seat component of a vehicle seat F1 or F2 which occur in a crash case, however, can not usually be compensated for via a short-circuited electromotive drive AE.

In the 2 is schematically illustrated a corresponding electric motor drive AE. This has an (electric) engine 1 , a gear unit coupled thereto 2 and an electronic control unit 3 on. The rotation of a drive shaft of the drive AE controlling control unit 3 is coupled to a power supply via lines L1 and L2. The electromotive drive AE is actuated via a schematically illustrated actuation switch 4 , This operating switch 4 is actuated, for example, by a seat user in order to trigger a power-operated adjustment of the respective seat component. There is also a short-circuit switch 5 provided to short-circuit the lines L1 and L2 and thus to generate via the electric motor drive AE a moment which counteracts a seat-side adjustment of a seat component. The operation of the short-circuit switch is controlled 5 via a circuit and / or control electronics 6 ,

The electromotive drive AE is coupled via a self-locking adjustment mechanism with the respective seat component of the respective adjusting device VE1 to VE4 to be locked. Such an output-side adjustment by the adjusting mechanism and the non-short-circuited drive AE is not blocked by shorting the drive AE, however, a self-locking can be simulated and a the output-side adjustment counteracting (braking or holding) torque generated.

For example, the short-circuited drive AE is part of an adjusting device VE2 or VE3, in which the respective backrest R is rotatably mounted on a seat bottom ST via a latching fitting. The catch fitting is manually unlocked here. When unlocked latch fitting then the backrest R is manually adjustable. The electromotive drive AE and the self-locking adjustment mechanism do not counteract such an adjustment via the adjustment force applied on the output side for pivoting the backrest R. In this way, the backrest R of the first row of seats SR 1 can for example be manually folded forward into a so-called easy-entry position. If the backrest R assumes the easy-entry position as intended and if the backrest R is located in a predetermined, pre-folded adjustment position relative to the respective seat bottom part ST, the control and / or control electronics are used 6 the short-circuit switch 5 pressed and the engine 1 the drive AE shorted. This results in an increased stiffness of manual backrest adjustment and the position of the backrest R is perceived as quasi fixed and locked. At the same time, this binding ensures overload protection. The fact that the backrest R has assumed the predetermined adjustment position is detected, for example, electronically via a button or a switch, possibly in the form of a relay.

In one embodiment, regardless of the adjustability of the backrest R in an easy-entry position - the electromotive drive AE be provided for a power-operated adjustment of the backrest R, the drive AE is short-circuited at resting backrest R. In this way, self-locking and / or stiffness is simulated via the short-circuited electromotive drive AE when the backrest R is in an erect use position and is to be adjusted by an adjusting force acting on the backrest R.

In this case, the backrest R in addition to the easy-entry position in a cargoposition on the seat bottom ST be hinged and externally powered from this via the electric motor drive AE are folded back into an upright position of use. The circuit and / or control electronics 6 is set up here, for a manual adjustment of the backrest R in the easy-entry position via the short-circuit switch 5 cancel a short circuit of the electromotive drive AE until the easy entry position is reached. The electromotive drive AE is thus on the one hand for a power-operated adjustment of the backrest R from the Cargoposition used in a use position (possibly also vice versa) and shorted inactivity to counteract improper adjustment and apply a corresponding holding or braking torque. In order to allow the easy-entry position to be taken by manual adjustment of the backrest R and in this case not create a counteracting moment, the short circuit can be deliberately interrupted until the easy-entry position is reached. After reaching the Easy-entry position, the electric motor drive AE is short-circuited again.

In order to enable a targeted interruption of the short circuit, the circuit and / or control electronics can be coupled to an operating element which can be manually operated by a user to adjust the backrest R in the easy-entry position. Such an operating element is provided, for example, on the vehicle seat F1, e.g. in the form of an operating lever at the upper end of the backrest R.

Alternatively or additionally, means could be provided for lifting the short circuit of the electromotive drive AE, for example on the vehicle seat F1 of the front seat row SR1 and in particular on the rear or underside thereof, in order to manually adjust the backrest R for a panic exit after a crash enable. In a variant, for example, means for receiving an electronically generated interrupt signal US are provided and the circuit and / or control electronics 6 is set to cancel on receipt of the interrupt signal US the short circuit of the electric motor drive AE. If a self-locking and / or a stiffness is simulated on the short-circuited drive AE in the normal case, a targeted interruption of the short circuit is made possible for a panic exit, so that for an adjustment of the backrest R at most still the mechanical locking must be solved via a snap fitting.

The interruption signal US is automatically generated in response to a sensed, for an imminent or already occurred crash case representative crash event, such as a deformation of a certain vehicle part and / or a detected impact of the vehicle on an obstacle. In one exemplary embodiment, the interruption signal US can be generated by manually actuating an operating element, for example a control element provided on the vehicle seat. Here, the user is then actuated by the user for panic exit and generates an electronic interrupt signal to cancel the short circuit. Alternatively or additionally, means for mechanically interrupting a connection of the lines L1 and L2 may be provided, without the short-circuit switch 5 to open again. Consequently, in this variant, the short circuit for the panic exit is mechanically canceled, for example by an additional break contact UK. The means for mechanical interruption may in this case also include an operating element BE on the vehicle seat F1, such as an adjustably mounted control lever, an extendable flap or a depressible control knob.

After an accident, a vehicle occupant seated on a vehicle seat F2 of the rear seat row SR2 can thus actuate a corresponding operating element BE on the vehicle seat F1 of the front seat row SR1 in order to electronically and / or mechanically cancel a short circuit of the electromotive drive AE of the adjusting device VE2 and to achieve that the backrest R can be adjusted for a panic exit on the self-locking adjustment mechanism without counteracting moment on the part of the electric motor drive AE. In another embodiment, it can be provided that, in the case of a latching fitting of an adjusting device VE2 or VE3, the catch fitting is actuated electrically via an actuator and the backrest R can be adjusted in a power-operated manner via a separate backrest drive. About the actuator, for example, an adjustment in the form of a pawl of the detent fitting in a release or unlocking position adjustable to unlock the latching fitting and to pivot the backrest R can freely. The actuator may in this case be part of an electromotive drive of the respective adjusting device VE2 or VE3, which is deliberately short-circuited to hold an adjusting part of the respective adjusting device VE2 or VE3 in an actuated position, in which one - here power-operated, but possibly also manual - adjustment the backrest R is possible.

In addition to the above explanations is a possible basic principle of a control method according to the invention using an adjusting device according to the invention on the basis of 3 illustrated.

It is provided in a first method step A1 that an adjusting mechanism of the respective adjusting VE1 to VE4 is actuated to a seat component, such as the through D, the headrest K, the backrest R, seat bases ST or the seat cushion support T of a vehicle seat F1, F2 or to adjust a whole seat row SR1, SR2. The actuation of the adjusting mechanism can in this case also be triggered by an electronically detected operating event and / or carried out by external power.

In a subsequent method step A2, the adjustment of the respective seat component then takes place. If the reaching of a predefined adjustment position, such as, for example, when an easy-entry position is reached when the backrest R is moved forward, then in a method step A3 this triggers the generation of a holding signal on a circuit and / or control electronics 6 for the respective adjustment VE1 to VE 4 off.

On the basis of this holding signal, the electromotive drive is then short-circuited in order to hold the respective seat component (the first seat part) and / or a corresponding adjustment part, which is adjustable, for example, via an actuator of the electromotive drive, in an adjustment range around the desired adjustment position and the corresponding one Stabilizing adjustment. A complex mechanical lock for securing the respective adjustment position can be omitted here.

LIST OF REFERENCE NUMBERS

1

engine

2

gear unit

3

control unit

4

actuating switch

5

Short-circuit switch

6

Circuit and / or control electronics

AE

drive

BE

operating element

D

through loading

F1, F2

vehicle seat

K

headrest

L1, L2

management

R

backrest

SA

rail arrangement

SR1, SR2

row

ST

Seat bottom

SU

Seat underframe

T

Seat cushion support

UK

Breakpoint

US

interrupt signal

VE1, VE2, VE3, VE4

adjustment

Claims (20)

Adjusting device for the adjustment of a first seat part (D, K, R, ST, T) of a vehicle seat (F1, F2) relative to at least one second seat part (R, SA, SU, ST) of the vehicle seat (F1, F2), wherein the Adjusting device (VE1-VE4) has an electric motor drive (AE), by means of which an adjusting force can be generated, via a self-locking adjustment mechanism of the adjusting (VE1-VE4) to the first seat part (D, K, R, ST, T) and / or an adjustment part of the adjusting device (VE1-VE4) is transferable, characterized in that the adjusting device (VE1-VE4) a circuit and / or control electronics ( 6 ), which is set up by shorting the electromotive drive (AE) to produce an adjustment of the first seat part (D, K, R, ST, T) and / or an adjustment of the adjustment counteracting moment to the first seat part (D , K, R, ST, T) and / or to keep the adjustment part in a predetermined adjustment range. Adjusting device according to claim 1, characterized in that the circuit and / or control electronics ( 6 ) is set up by the short-circuiting of the electric motor drive (AE) to simulate a self-locking or stiffness of the adjustment mechanism. Adjusting device according to claim 1 or 2, characterized in that the circuit and / or control electronics ( 6 ) at least one button and / or switch ( 5 ), by means of which the electromotive drive (AE) is intentionally short-circuited upon reaching the adjustment range. Adjusting device according to one of claims 1 to 3, characterized in that the circuit and / or control electronics ( 6 ) is set up, for an adjustment of the seat part (D, K, R, ST, T) and / or the adjusting part to suspend a short circuit of the electric motor drive (AE). Adjusting device according to one of the preceding claims, characterized in that the circuit and / or control electronics ( 6 ) comprises a control unit with an evaluation logic, by means of which the electromotive drive (AE) is intentionally short-circuited upon reaching the adjustment range. Adjusting device according to one of the preceding claims, characterized in that the first seat part a through-loading (D), a center armrest, a headrest (K), a backrest (R), a seat bottom (ST) or a seat cushion support (T) of the vehicle seat (F1 , F2). Adjusting device according to claim 6, characterized in that the backrest (R) of the vehicle seat (F1, F2) is adjustable from a use position into an easy-entry position and the circuit and / or control electronics ( 6 ) is arranged to hold the backrest (R) by shorting the electromotive drive (AE) in a predetermined by the easy-entry position adjustment relative to a seat bottom (ST) of the vehicle seat (F1, F2). Adjusting device according to claim 7, characterized in that via the adjusting device (VE2), the backrest (R) is adjustable in the easy-entry position and the circuit and / or control electronics ( 6 ) is arranged to hold the backrest (R) by shorting the electromotive drive (AE) in the predetermined adjustment, as soon as the backrest occupies the easy-entry position. Adjusting device according to one of the preceding claims, characterized in that the electromotive drive (AE) for a power-operated adjustment of the backrest (R) is provided and is short-circuited when the backrest (R). Adjusting device according to one of claims 6 to 8 and claim 9, characterized in that the backrest (R) in addition to the easy-entry position in a Cargoposition on the seat bottom (ST) is adjustable and the electric motor drive (AE) for a power-operated Adjustment of the backrest (R) from the cargo position is provided in an erect use position. Adjusting device according to claim 4 and claim 9 or 10, characterized in that the circuit and / or control electronics ( 6 ) is set up, for a manual adjustment of the backrest (R) in the easy-entry position to suspend a short circuit of the electric motor drive (AE) until the easy-entry position is reached. Adjusting device according to claim 11, characterized in that the circuit and / or control electronics ( 6 ) is coupled to a control element which is manually operable by a user to adjust the backrest (R) in the easy-entry position. Adjusting device according to one of claims 9 to 12, characterized in that means for lifting the short circuit of the electric motor drive (AE) are provided to allow for a panic exit after a crash, a manual adjustment of the backrest (R). Adjusting device according to claim 13, characterized in that means for receiving an electronically generated interrupt signal (US) are provided and the circuit and / or control electronics ( 6 ) is arranged, on receipt of the interrupt signal (US) cancel the short circuit of the electric motor drive (AE). Adjusting device according to claim 13, characterized in that means (BE) are provided for mechanically interrupting a line connection, wherein the interruption of a line connection of the short circuit of the electric motor drive (AE) is canceled. Adjusting device according to one of claims 6 to 15, characterized in that the adjusting device (VE2, VE3) comprises an unlockable detent fitting to the backrest (R) of the vehicle seat (F1, F2) relative to a seat bottom (ST) of the vehicle seat (F1, F2), and the circuit and / or control electronics ( 6 ) is arranged to lock the backrest (R) by shorting the electromotive drive (AE) in a predetermined adjustment relative to a seat bottom (ST) of the vehicle seat (F1, F2). Adjusting device according to one of the preceding claims, characterized in that the means of the electric motor drive (AE) adjustable adjusting part of the adjusting device (VE1-VE4) is part of a lock to the first seat part (D, K, R, ST, T) relative to the second seat part (R, SA, SU, ST) to lock, and the circuit and / or control electronics ( 6 ) is arranged by shorting the electric motor drive to keep the adjustment part in an adjustment, in which allows an adjustment of the first seat part (D, K, R, ST, T) relative to the second seat part (R, SA, SU, ST) is. Adjusting device according to claim 17, characterized in that the adjusting device (VE2, VE3) comprises a detent fitting, wherein - the backrest (R) of the vehicle seat (F1, F2) in a locked state of the detent fitting relative to a seat bottom (ST) of the vehicle seat ( F1, F2) is locked and in an unlocked state of the detent fitting is pivotable relative to the seat bottom (ST), - the adjusting part is part of a lock provided via the locking fitting and is manually or externally operated actuated adjustable between at least two adjustment positions to lock the catch fitting or to unlock, and - the circuit and / or control electronics ( 6 ) is arranged by shorting the electromotive drive (AE) to keep the adjustment part in an adjustment, in which the latching fitting is unlocked. Method for controlling an adjustment of a first seat part (D, K, R, ST, T) of a vehicle seat (F1, F2) relative to at least one second seat part (R, SA, SU, ST) of the vehicle seat (F1, F2), wherein an adjusting device (VE1-VE4) with an electromotive drive (AE) is provided, by means of which an adjusting force is generated, which via a self-locking adjustment mechanism of the adjusting (VE1-VE4) to the first seat part (D, K, R, ST, T ) and / or an adjusting part of the adjusting device (VE1-VE4) is transmitted, characterized in that upon reaching a predetermined adjustment position of the first seat part (D, K, R, ST, T) or the adjustment of the electric motor drive (AE) is shorted in order to generate a moment which counteracts an adjustment of the first seat part (D, K, R, ST, T) and / or of the adjustment part from an adjustment range encompassing the predetermined adjustment position. A method according to claim 19, characterized in that an adjusting device according to one of claims 1 to 18 is provided.

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