Opener device for a motor vehicle door

Abstract

The invention relates to an opener device for a motor vehicle door (1), comprising a drive (2; 6, 7) for an opener element (3) and additionally comprising at least one sensor (4) and a holding element (9) which acts on the opener element (3) and / or the motor vehicle door (1). According to the invention, the sensor (4) is designed as a crash sensor (4). The opener element (3) additionally acts on the motor vehicle door (1) on the basis of crash signals of the crash sensor (4), and the holding element (9) secures the motor vehicle door (1) and / or the opener element (3) in the initiated open position.

Description

[0001] Description

[0002] Opening device for a motor vehicle door

[0003] The invention relates to a positioning device for a motor vehicle door, comprising a drive for a positioning element, further comprising at least one sensor, and comprising a holding element acting on the positioning element and / or the motor vehicle door.

[0004] For aerodynamic reasons, attempts are increasingly being made to eliminate the need for a door handle for opening motor vehicles, especially their doors, from the outside. To still be able to open the respective vehicle door, prop-up devices are provided. With the help of the prop-up device, the respective vehicle door is usually propped up after a possibly preliminary question-and-answer dialogue between an operator requesting access and the vehicle in question, as well as a possible preliminary unlocking. This requires a gap between the vehicle door and the associated vehicle body.

[0005] The gap occurs because the drive for the opening element or the rubber door seal forces usually ensure that the vehicle door in question is moved into the slightly open position. This usually corresponds to a gap of a few centimeters from the vehicle body, which allows the vehicle door to be grasped with one hand and swung open completely. This allows access to the interior of the vehicle.

[0006] In a positioning device for a motor vehicle door, as described in DE 10 2016 105 760 1, a first sensor is provided on a drive element, which can at least distinguish between a positioning process and a manual opening process of the motor vehicle door. This is intended to provide a low weight while simultaneously improving comfort.

[0007] The further prior art according to DE 10 2018 132 666 A1 involves accommodating a force measuring device with an associated sensor in a mounting device in such a way that the movement of a gear carrier can be detected. The gear carrier represents a component of a gear unit that belongs to an electric motor drive for the mounting element and is arranged between the mounting element and the electric motor drive.

[0008] In the generic prior art according to DE 10 2018 132 665 A1, the motor vehicle door or the associated door element can be held in place using an actuating device or the positioning element. For this purpose, a locking lever is provided, which can be positively connected to the vehicle body. This allows safe opening even on downhill roads, because the holding element prevents the motor vehicle door from swinging open uncontrollably.

[0009] Additionally, a sensor is implemented that detects the pulling force exerted by an operator on the vehicle door, thus unlocking the locking lever. This releases the vehicle door from the body.

[0010] The state of the art has generally proven itself. However, previous approaches reach their limits when, for example, a motor vehicle with handleless vehicle doors is involved in an accident. In this case, the electric motor drive for the opening element is usually disabled, requiring additional and separate measures to open the vehicle door by arriving security personnel. However, upon arrival at the vehicle, the personnel involved may be confronted with problems such as emergency operating handles not being immediately visible or even being damaged. The invention aims to remedy this situation.

[0011] The invention is based on the technical problem of further developing such a mounting device in such a way that a possible accident or crash can be controlled and a simple and quick door opening can be carried out by arriving security personnel.

[0012] To solve this technical problem, a generic positioning device for a motor vehicle door is characterized in that the sensor is designed as a crash sensor and, depending on crash signals, the positioning element acts on the motor vehicle door and the holding element secures the motor vehicle door and / or the positioning element in the raised position.

[0013] First of all, it should be noted that the term "motor vehicle door" is to be understood broadly and generally within the scope of the present invention. This means that this includes both motor vehicle side doors and motor vehicle tailgates. Likewise, if applicable, front hoods, motor vehicle sliding doors, tailgates, etc. This means that, according to the invention, the term "motor vehicle door" not only encompasses motor vehicle side doors that allow access to potentially injured vehicle occupants inside the vehicle. Rather, it is of course also conceivable that in the event of a crash, a hood must be opened to extinguish an engine, or that a tailgate may need to be opened so that potentially dangerous cargo can be removed. In either case, the crash in question can be detected using the sensor designed as a crash sensor.This typically corresponds to a deceleration of the vehicle in question that exceeds values ​​of several g (where g is the acceleration due to gravity), typically several tens of g. In any case, an accident or crash can be reliably detected using the crash sensor, which is typically connected to a control unit. The control unit then, in turn, ensures that safety measures are initiated in the vehicle, for example, a seatbelt pretensioner is activated, one or more airbags are deployed, etc.

[0014] According to the invention, the crash signal or multiple crash signals detected by the sensor or crash sensor result in the motor vehicle door being actuated by the deployment element and moved into its deployed position. In principle, the deployment of the deployed position can still occur during the crash, but is generally only implemented after the crash. This means that, as soon as the deceleration forces measured by the crash sensor and acting on the motor vehicle have subsided, the relevant crash signal is evaluated by the control unit to the effect that the corresponding motor vehicle door or multiple motor vehicle doors can be deployed at this time and subsequently.

[0015] The opening of the relevant motor vehicle doors can depend on whether the seat is occupied. This means that, for example, if only the driver's seat is occupied, the invention is limited to opening only the driver's door. For safety reasons, however, it is also generally possible to open all of the motor vehicle's doors in order to allow arriving security personnel comprehensive access to the interior of the motor vehicle. For example, it is conceivable that the driver's door is stuck and the injured driver has to be rescued via the passenger door. The holding element additionally activated in this context ensures that the motor vehicle door is secured in its opened position and does not swing open uncontrollably. The same applies alternatively or additionally to the opening element.This is possible, for example, in the event of a rollover or an accident on a downhill slope and must of course be prevented so that any injured persons in the vehicle interior do not tumble out and possibly injure themselves further.

[0016] The procedure can be such that the positioning element and the holding element are loaded simultaneously. It is also conceivable for the positioning element to first load the vehicle door, and then the holding element to secure the vehicle door in the opened position. In general, and to increase functional reliability and avoid any functional problems, the procedure is such that the holding element is first moved into its position securing the vehicle door or the positioning element, and only then does the positioning element move the vehicle door into the opened position.

[0017] The usual procedure is to ensure that the gap corresponding to the deployment position ranges from a few centimeters, for example 10 mm, 20 mm or more, up to generally 50 mm. Since the retaining element has usually already assumed its position securing the vehicle door when the deployment element is subjected to pressure, it is necessary for the retaining element to be able to withstand any forces exerted by the deployment element on the vehicle door and thus also on the retaining element. Such forces can be up to approximately 1 kN. Such deployment forces, exerted by the deployment element on the vehicle door, are often necessary in order to be able to deploy any vehicle door that may be braced against the vehicle body following a crash. The corresponding deployment forces are usually between approximately 0.5 kN and 1 kN, and can of course be even higher if necessary.

[0018] In any case, both the drive for the deployment element and the retaining element are designed to absorb the aforementioned deployment forces. At the same time, this ensures that even following a crash and in the event of any distortion of the vehicle door being opened relative to the vehicle body, the deployment forces are sufficient to provide access to the vehicle interior.

[0019] In general, the procedure is such that the crash sensor and the drive for the deployment element, as well as the holding element, or preferably a separate and additional drive for the holding element, are connected to the previously mentioned common control unit. This allows the control unit to control the drive for the deployment element and, if necessary, the additional separate drive for the holding element depending on the crash signals emitted by the crash sensor and evaluated by the control unit. As already explained, the typical procedure is such that the holding element first assumes its position holding or fixing the motor vehicle door, and only then is the deployment element subjected to a load.

[0020] In this context, various basic approaches are conceivable. For example, the drive for the deployment element can be designed as an electric motor drive. This can be used for normal operation. Additionally, an energy storage drive can be provided for the deployment element, which is only used in the event of a crash or immediately after the crash. As an alternative to the energy storage drive, a chemically reactive drive is also conceivable. In an advantageous embodiment, this can be a pyrotechnic drive, i.e. one in which a chemical reaction is triggered, which generally results in the expansion of a cylinder, which in turn then acts on the deployment element to deploy the vehicle door.

[0021] In principle, alternatively or additionally, an electromechanical drive can also be used for the deployment element. Such an electromechanical drive usually operates on the deployment element without a motor, in which case, for example, a shape memory metal, a piezoelectric drive, etc. is used. The drives already described can be used individually or in any combination. For example, the energy storage drive may be designed as a spring storage device or contain one or more such spring storage devices. The energy storage device in question can then be equipped with the required energy at the factory. The energy available in the energy storage device is then only used in the event of a crash to transfer the deployment element into its deployment position.In this context, the energy storage device can also be used to move vehicle doors that are tilted or blocked relative to the bodywork into the upright position in the event of a crash.

[0022] Instead of filling the energy storage drive or an energy storage device or spring storage device implemented at this point at the factory, it is also possible to charge the energy storage device during normal operation via the installation device or the drive for the installation element, either regularly or at certain predetermined intervals. If a spring storage device is used as the energy storage drive or associated energy storage device, it can be designed in such a way that when the installation position is reached, no force is (any longer) exerted on the holding element which is already in its holding or fixing position, thus preventing any damage. Furthermore, it is possible to implement the energy storage device or spring storage device in question using a combination of two or more springs. In this case, it is conceivable that, for example, a strong spring could be used as part of the energy storage device orThe spring-loaded mechanism applies pressure to the opening element to such an extent that the vehicle door is almost fully opened or almost completely closed. A second, weaker spring can then ensure that the opening element completes the remaining travel to the open position.

[0023] In this context, the drive for the opening element can also be equipped with its own power source, independent of a vehicle battery. This makes it possible for the drive for the opening element to raise the vehicle door even if a power supply line to the vehicle battery is interrupted in the event of a crash. This dedicated power source can be a battery, one or more capacitors, or combinations of these.

[0024] Of course, when implementing an electric motor drive for normal operation on the one hand and an energy storage drive for the event of a crash on the other, it is also possible for both of these drives to jointly actuate the positioning element and thus the vehicle door. Such joint actuation is generally also possible outside of and independent of a crash, for example when a particularly large force has to be overcome on the vehicle door in order to be able to open it. This is the case, for example, if the vehicle door is iced over. In this case, a force sensor may be implemented in addition to the sensor or crash sensor, whereby in this case the positioning element is acted upon by the electric motor drive for normal operation and additionally by the energy storage drive depending on signals from the force sensor.

[0025] In principle, the drive in question can also actuate a release element for the mechanical energy storage device. This means that in this case, the drive itself does not actuate the actuation of the positioning element. Rather, the release element is actuated via the drive, so that when the release element is removed or opened, the mechanical energy storage device can release the energy stored in it. In the simplest case, the mechanical energy storage device is the spring-loaded device described in detail above. The release element may be designed as a latch that releases the spring-loaded device and is actuated by the drive. In principle, the release element or latch can be actuated via the drive for the positioning element and for normal operation, for example, such that the drive in question is actuated beyond a certain end position for normal operation, is actuated in the opposite direction, etc.In any case, such a release element generally requires only a small amount of drive energy for its operation, so that in this case the additional energy source for the drive, which may be provided independently of the vehicle battery, can be designed to be particularly simple, small and lightweight, and with a low capacity.

[0026] Typically, the positioning element and / or the holding element can be moved into a position that releases the motor vehicle door by means of an actuating means. The actuating means can be a door handle, particularly an interior door handle. Alternatively or additionally, an actuating element, preferably accessible from the outside, can also be implemented.

[0027] In this way, it is possible, for example, for the holding element to be actuated via a door handle or interior door handle. This makes it possible for people inside the vehicle and those involved in the accident to easily open the vehicle door, which is secured using the holding element and in the raised position after the crash. Of course, this actuation option also takes into account the possibility that a child safety lock function is implemented on the rear vehicle side doors or that the child safety lock can be engaged. In this case, it has proven useful if the actuating device is mechanically coupled to the raised element and / or the holding element via a coupling that can be pushed in and out. In the "child safety lock on" position, the coupling is disengaged, so that children in the rear area can open the relevant vehicle door using the door handle or interior door handle, even after an accident.The interior door handle is not possible. This requires that the clutch is engaged, so that the relevant rear side door of the vehicle can then be opened using the interior door handle as the actuating means.

[0028] The externally accessible operating element may be an emergency handle or similar. For this purpose, the operating device in question may be equipped with a preferably flexible connecting element, for example a Bowden cable, via which the operating element establishes the necessary mechanical connection to the holding element and / or the setting element. In this context, it is also conceivable that the externally accessible operating element in question is marked in the event of a crash, slightly mechanically extended or otherwise identified so that arriving security personnel can recognise the externally accessible operating element in question and immediately open the vehicle door. For this purpose, it is only necessary that the holding element is usually released from its securing or positioning function via the externally accessible operating element.the position holding the motor vehicle door is removed so that the motor vehicle door in question can then be easily swung open manually. This is because the motor vehicle door in question is already in its open position following the crash, so that arriving security personnel can easily grasp a corresponding door leaf through the gap between the door leaf and the vehicle body and swing it open. Finally, it has proven effective if the setting element and / or the holding element engage with a contour of the motor vehicle door. This contour in question is particularly advantageous in the form of a lock holder connected to the motor vehicle door. The design is usually such that both the setting element and the holding element engage with the lock holder in question.As a result, any additional measures or additional training on the vehicle door are expressly not required, because the lock holder functions accordingly and is used for this purpose.

[0029] The result is a deployment device for a motor vehicle door that ensures that the vehicle door assumes its deployed position in the event of a crash. This allows arriving security personnel to gain particularly easy and intuitive access to any injured persons inside the vehicle. To do so, they simply need to remove the retaining element securing the vehicle door in the deployed or raised position. This can be done either very simply manually through the gap between the vehicle door and the vehicle body in the deployed or raised position assumed by the vehicle door.

[0030] However, it is also possible for arriving security personnel, for example, to activate the externally accessible actuating element for this purpose, which moves the retaining element from its position securing the vehicle door to a position releasing it. This then makes the vehicle door immediately accessible and can easily be swung open manually.

[0031] In this context, a further and advantageous approach is taken so that even warped or jammed motor vehicle doors can generally be raised following a crash. For this purpose, the invention generally uses, in addition to the electric motor drive for normal operation of the raising element (i.e., outside of a crash), an energy storage drive and / or a chemically reactive drive and / or an electromechanical drive, for example. The respective drives provide raising forces that significantly exceed those of the electric motor drive for normal operation. For example, raising forces of up to 1 kN and more can be realized and implemented with such an energy storage drive using, for example, a spring actuator.

[0032] This enormously increases the overall safety of any vehicle occupants involved in the accident and significantly simplifies the work of arriving security personnel. In the best case scenario, any tools or crowbars needed to pry open one or more vehicle doors are unnecessary, because the inventive positioning device has already ensured that the vehicle door has assumed its initial position following the crash. This represents the key advantages.

[0033] The invention will now be explained in more detail with reference to a drawing which merely represents an exemplary embodiment; in the drawings:

[0034] Fig. 1 shows the installation device according to the invention in a basic overview,

[0035] Fig. 2 is a schematic detailed view of the installation device according to Fig. 1,

[0036] Fig. 3 shows an embodiment of the invention,

[0037] Fig. 4 shows a further embodiment of the invention and

[0038] Fig. 5 shows the drive for the opening device of the motor vehicle door in connection with normal operation. The figures show a opening device for a motor vehicle door 1. In the exemplary embodiment, the motor vehicle door 1 is a front motor vehicle side door 1. In general, however, the motor vehicle door 1 can also be designed as a rear motor vehicle side door, tailgate, etc., as already described in the introduction. For this purpose, the opening device for the motor vehicle door 1 initially has a drive 2 for a opening element 3. In addition, a sensor 4 indicated in Fig. 1 is implemented, which according to the invention is a crash sensor 4. This means that with the help of the sensor or crash sensor 4, an accident or crash of the associated motor vehicle can be sensed. This generally corresponds to decelerations that are well above 5 g.

[0039] Figure 1 shows that, in addition to the drive 2 for the support element 3, a further energy storage drive 7 or chemically reactive drive 6 is implemented within the scope of the exemplary embodiment and is not limited thereto. This drive can be used to actuate the support element 3 as an alternative to the drive 2 for normal operation, specifically in the event of a crash. In addition, a release element 8 is implemented in this context, which will be explained in more detail below.

[0040] Of particular importance is a holding element 9 that acts on the motor vehicle door 1. It can be seen that the drive 2 for the positioning element 3 in normal operation, the sensor or crash sensor 4 and also the chemically reactive drive 6 or alternatively the energy storage drive 7 as well as the holding element 9 or an associated separate drive for the holding element 9 are connected to a common control unit 5. In this way, the control unit 5 as a whole can be designed and operate such that, depending on crash signals from the crash sensor 4, the positioning element 3 or the chemically reactive drive 6 or the energy storage drive 7 acts on the positioning element 3 and thus the motor vehicle door 1. Furthermore, the control unit 5 in the exemplary embodiment ensures that the holding element 9 secures the motor vehicle door 1 in the raised position.

[0041] The drives 2, 6, 7 can be functionally and conceptually differentiated in such a way that the drive 2 for normal operation is hereinafter referred to as the normal operation drive 2, whereas the alternative drives, i.e. the energy storage drive 7 or the chemically reactive drive 6, are hereinafter referred to as crash operation drives 6, 7. Consequently, according to the exemplary embodiment, the crash operation drives 6, 7 are only used when the crash event has been sensed with the aid of the crash sensor 4. In principle, joint operation of both the normal operation drive 2 and the two crash operation drives 6, 7 is of course also conceivable. This is not shown in detail, however. Also not shown is the further possibility of using an electromechanical drive as the crash operation drive 6, 7, as already explained in detail in the description.

[0042] The drive 2, 6, 7 can each be equipped with its own energy source 10, independent of a motor vehicle battery. This own energy source 10 may, in the exemplary embodiment and not limited to, be an accumulator or a battery, one or more capacitors, etc. Furthermore, the drive 2; 6, 7 and, more specifically, the crash-operation drive 6, 7 or the energy storage drive 7 can be equipped with a release element 8. In this context, the release element 8 ensures that a mechanical energy storage device 11 releases the energy stored therein. A small amount of electrical energy is sufficient to actuate the release element 8.

[0043] Only indicated is an actuating means 12, 13, with the aid of which the positioning element 3 and / or the holding element 9 can be actuated and moved into a position releasing the motor vehicle door 1. According to the exemplary embodiment, the actuating means 12, 13 is a door handle or interior door handle 12. In the example shown, the holding element 9 can be moved via the interior door handle 12 from its position securing the motor vehicle door 1 to its position releasing the motor vehicle door 1. To do this, the holding element 9 is simply pivoted out with respect to a lock holder 15, as can be seen from Fig. 5. In fact, the holding element 9, in its position securing the motor vehicle door 1, engages between two brackets of the respective lock holder 15 and ensures that the raised motor vehicle door 1 cannot pivot open uncontrollably.

[0044] A similar function is performed by an additionally indicated and externally accessible actuating element 13. For this purpose, the actuating element 13 may be connected to the holding element 9 using a preferably flexible connecting means 14. According to the exemplary embodiment, the flexible connecting means 14 is a Bowden cable. Accordingly, actuation of the externally accessible actuating element 13 results in the holding element 9 being moved again from its position securing the motor vehicle door 1 to its position releasing the motor vehicle door 1. As a result, the motor vehicle door 1 as a whole can be pivoted open without any problems, for example by security personnel arriving following the described crash by grasping the motor vehicle door 1, which is in the open position, through a gap in the motor vehicle body and thereby pivoting the motor vehicle door 1 open.

[0045] Not explicitly shown is the further possibility that the actuating means 12, 13 in question, and in particular the interior door handle 12, is mechanically coupled to the positioning element 3 or the holding element 9 via a clutch that can be engaged and disengaged. This makes it possible for a child safety lock function, for example, to still be implemented and implemented unchanged on a rear motor vehicle side door (not shown here). If the associated child safety lock unit is in its "child safety lock on" position, the clutch, which is disengaged in this case, ensures that the holding element 9 cannot be pivoted via the interior door handle 12 and consequently retains its unchanged position securing the motor vehicle door 1 even after a crash.This is only released when the retaining element 9 is moved, for example, from the outside from its position securing the motor vehicle door 1 to the position releasing the motor vehicle door 1, or the previously mentioned clutch is engaged. This is because the interior door handle 12 is then mechanically coupled to the retaining element 9, so that applying pressure to the interior door handle 12 ensures that the retaining element 9 is moved from its position securing the motor vehicle door 1 to the position releasing the motor vehicle door 1.

[0046] It functions as follows. If the motor vehicle is moved during normal operation, following the question / answer dialog described in the description and the unlocking and, if necessary, electric motor opening of a motor vehicle lock (not shown here), the opening element 3 is actuated by means of the normal operation drive 2. To this end, the normal operation drive 2 ensures that the motor vehicle door 1 is moved into its open position relative to the motor vehicle body (only indicated in Fig. 1). In this open position, the motor vehicle door 1 occupies a gap of a few centimeters relative to the motor vehicle body, so that an operator wishing to gain access can grasp the motor vehicle door 1 through the gap and swing it open.

[0047] If a crash occurs, this is usually associated with the normal operation drive 2 being electrically disconnected from a motor vehicle battery and therefore generally not (or no longer) working. In this case, the energy source 10, which is independent of the motor vehicle battery, ensures that the crash operation drive 6, 7 continues to work and can move the motor vehicle door 1 into its raised or open position. This happens in the exemplary embodiment and usually after the crash. This means that first the crash sensor 4 registers the crash and reports it to the control unit 5. After the crash or corresponding decelerations have subsided, the control unit 5 evaluates the corresponding crash signals from the crash sensor 4 and ensures that the crash operation drive 6, 7 is activated with the help of the energy source 10, which is independent of the motor vehicle battery.

[0048] The crash-operation drive 6, 7, in turn, ensures that, following the crash, the motor vehicle door 1 according to the exemplary embodiment is moved into the opening position with the aid of the energy storage drive 7 or by resorting to the chemically reactive drive 6, or by both. The crash-operation drive 6, 7 is capable of exerting a high opening force on the opening element 3 or the motor vehicle door 1, which can be, for example, 1 kN or more. In this way, even a tilted or jammed motor vehicle door is usually opened following the crash.

[0049] Previously, the holding element 9 has been moved into its position securing the motor vehicle door 1. As a result, following the crash, the crash operating drive 6, 7 in the exemplary embodiment ensures that the motor vehicle door 1 is not only moved into its raised position with the aid of the setting-up element 3, but also that the motor vehicle door 1, and more specifically the lock holder 15, moves against the holding element 9. In order to keep the observed forces low at this point, according to the individual illustration in Fig. 4 in connection with the energy storage drive 7 or the mechanical energy storage device 11 implemented at this point, the energy storage device 11 only acts on the motor vehicle door 1 until the set-up position is reached, thus preventing a stop on the holding element 9 or at least reducing its effect.For this purpose, it is conceivable, in a variant not shown, to design the mechanical energy storage device in two parts with a strong and a weak spring.

[0050] In this context, the strong spring ensures that the motor vehicle door 1 is raised by applying pressure to the raising element 3 until it almost reaches the raised position. The weak spring then ensures that the remaining travel until the raised position is reached and, specifically, that the lock holder 15 moves against the retaining element 9. In either case, the lock holder 15 generally functions as the contour of the motor vehicle door 1, which interacts with the raising element 3 and the retaining element 9 according to the exemplary embodiment.

[0051] This is best seen in the individual illustration in Fig. 5. Here, it is clear that the positioning element 3 is actuated as a whole via a lever drive with the aid of the electric motor drive 2 and moves against the lock holder 15. In the exemplary embodiment, actuation of the electric motor drive 2 results in the positioning element 3 adjusting the lock holder 15 "to the left," which corresponds to the motor vehicle door 1 being positioned "to the right" until the positioning position is reached relative to the vehicle body.

[0052] List of reference symbols

[0053] Motor vehicle door 1 drive 2

[0054] Installation element 3

[0055] Crash sensor 4

[0056] Control unit 5

[0057] Drive 6

[0058] Energy storage drive 7 Crash operation drives 6, 7 Release link 8

[0059] Holding element 9

[0060] Energy source 10

[0061] Energy storage 11

[0062] Interior door handle 12

[0063] Actuating means 12, 13

[0064] Actuating element 13

[0065] Connecting elements 14 Lock holder 15

Claims

Patent claims 1. A positioning device for a motor vehicle door (1), with a drive (2; 6, 7) for a positioning element (3), furthermore with at least one sensor (4), and with a holding element (9) acting on the positioning element (3) and / or the motor vehicle door (1), characterized in that the sensor (4) is designed as a crash sensor (4) and, depending on crash signals, the positioning element (3) acts on the motor vehicle door (1) and the holding element (9) secures the motor vehicle door (1) and / or the positioning element (3) in the erected position.

2. Device according to claim 1, characterized in that the crash sensor (4) and the drive (2; 6, 7) for the erection element (3) and optionally a separate drive for the holding element (9) are connected to a common control unit (5).

3. Device according to claim 1 or 2, characterized in that the drive (2; 6, 7) for the erection element (3) is designed as an electric motor drive (2) and / or energy storage drive (7) and / or chemically reactive drive (6) and / or electromechanical drive.

4. Device according to one of claims 1 to 3, characterized in that the drive (2; 6, 7) is equipped with its own energy source (10) which is independent of a motor vehicle battery.

5. Device according to one of claims 1 to 4, characterized in that the drive (2; 6, 7) comprises a release member (8) for a mechanical energy storage device (11 ) is applied.

6. Device according to one of claims 1 to 5, characterized in that the setting element (3) and / or the holding element (9) can be transferred by means of an actuating means (12, 13) into a position releasing the motor vehicle door (1).

7. Device according to claim 6, characterized in that the actuating means (12, 13) is designed as a door handle (12), in particular an inside door handle (12), and / or preferably an actuating element (13) accessible from the outside.

8. Device according to claim 7, characterized in that the actuating element (13) is coupled to the holding element (9) and / or the erection element (3) by means of a preferably flexible connecting means (14), for example a Bowden cable (14).

9. Device according to one of claims 6 to 8, characterized in that the actuating means (12, 13) is mechanically coupled to the erecting element (3) and / or the holding element (9) via an engageable and disengageable clutch.

10. Device according to one of claims 1 to 9, characterized in that the setting element (3) and / or the holding element (9) engage a contour (15) of the motor vehicle door (1), for example a lock holder (15) connected to the motor vehicle door (1).

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