DE102009036872A1 - Door unit, particularly motor vehicle door unit, comprises motion transfer member which is attached to door leaf, drive shaft, and clutch member, which interacts with drive shaft for changing closing force - Google Patents

Abstract

The door unit comprises a motion transfer member (3) which is attached to a door leaf, drive shaft (4), and a clutch member (5), which interacts with the drive shaft for changing closing force. The clutch member comprises a clutch element, which is moved with the drive shaft, and a stationary clutch element.

Description

The Invention relates to a door unit, in particular motor vehicle door unit, with a motion transmission member connected to a door leaf with drive shaft, and changeable with a coupling member Closing force, which interacts with the drive shaft, wherein the coupling member with at least one mitbewegten with the drive shaft Coupling element and a stationary coupling element equipped.

A door unit of the structure described above, for example, in the DE 198 44 265 A1 presented. There, a drive device with safety coupling is provided, which has cooperating coupling elements. The coupling elements couple via a locking mechanism with a specified torque limitation. In this case, the closing mechanism for the coupling elements on a clutch spring, which provides the required closing force.

in the Detail is the first of the cooperating coupling elements Coupling member rotatably connected to an output member while the second coupling element rotationally fixed and concentric with a Output gear of a transmission is connected. The gear works with an electric motor drive together. The coupling elements are designed as clutch plates, which on their each other facing sides interlocking cam-like projections and have formations. This will decouple if necessary the engine of an associated tailgate available posed.

Quite apart from that one knows by the DE 101 14 938 B4 a device for actuating an automotive swing door. Also in this case, an electric motor is realized. There is also a motion transmitting member having one end connected to the pivoting door. In addition, there is an electromagnetic clutch provided between the electric motor and a speed reduction device. With the help of the coupling, the two aforementioned elements can either connect or disconnect.

Of the The state of the art can not be satisfied in all aspects. So finds the disengagement of the known safety clutch depending on preset conditions. That is, it is, for example, in terms of weight heavy or stiff doors, in particular Motor vehicle swing doors, the danger that, for example the continuous connection from the drive motor to the door is interrupted without a full opening or closing the door has been achieved.

All apart from that one observes with manually operated motor vehicle doors, that of a Reibbremsvorrichtung respectively a coupling member At this point applied holding forces are not sufficient are to secure the door in a specific fix Position to provide.

For example, the DE 10 2005 060 709 A1 a biased by a spring friction brake device or a coupling member with - if you like - changeable closing force. In fact, a rolling ball is realized in detail, which is biased by the spring in question and engages in a groove. Characterized in which a plurality of grooves are provided over the circumference of a ring hinge, depending on the opening angle of the door or the door leaf or swing gate wing different locking positions can be adjusted. This has proven itself in principle.

Of the However, the prior art does not take into account that the doors used in practice, respectively Swing door wing on the basis of changing Lever arms are hinged to a motor vehicle body. Such Lever arms can cause in extreme cases the well-known door lock with its built-up holding power is not (anymore) sufficient for a determination. Such scenarios For example, are conceivable when a motor vehicle at a Downhill slope turned off and the door opened becomes. Similar problems occur when the hinged door for example, is detected by wind.

In any case suffice the known door units with the there Coupling members did not meet today's requirements more. This applies both in the case that the in question Coupling member is used as a kind of safety coupling and For example, an electric motor drive when a Resistance during the opening movement of the Door decoupled. Similar problems are observed when the coupling member acts as a friction brake and not is capable for a reliable fixation and fixing the vehicle door or its door wings to be able to. Here, the invention aims to provide a total remedy.

Of the Invention is based on the technical problem of a door unit, in particular motor vehicle door unit of the initially described To develop further so that the closing force of the Coupling member to the actual requirements easily can be adjusted.

To solve this technical problem is provided in a generic door unit that the bias of the spring by means of we at least one actuator, in particular axial actuator, is changed.

Learns according to the invention So the bias of the spring, which moved along with the drive shaft Coupling element and the stationary coupling element both acted together, a change, with Help the actuator, preferably the Axialstellglieds. This means, there is a special actuator for the change of the Preload for use, which mainly in the axial direction is working. The axial direction is determined by the drive shaft. This means in essence that the spring and also the axial actuator regularly are arranged axially compared to the drive shaft. Mostly finds the drive shaft in the center of both said spring as well as the usually rotationally symmetrical axial actuator. The spring is generally a coil spring. Of course, also several actuators Find use.

The Change in the bias of the spring is done in the frame the invention in that the said spring in its length is changed. An increase corresponds to this the bias to a compression of the spring, whereas a reduction the bias is accompanied by a relaxation of the spring. Both Kraftbeaufschlagungen for compression or relaxation of the spring take place according to an advantageous embodiment in the by the drive shaft fixed axial direction.

Mostly are also the two coupling elements, that is with the drive shaft co-moving coupling element as well as the stationary coupling element arranged axially compared to the drive shaft. Indeed it is the coupling elements regularly around slats, which are in the manner of circular disks opposite the centrally located drive shaft are placed. By doing so leaves to realize a particularly compact structure, namely namely the coupling element in question with its clutch plates, the axial actuator and finally the spring each rotationally symmetrical compared to the arranged on the common axis drive shaft are placed. - The actuator is usually as adjusting sleeve, in particular Axialstellhülse, formed.

On This way there is a possibility that the actuator or Axialstellglied motor externally and / or motion-dependent internally adjusted. For this purpose, the invention continues before that the actuator with a switching element to its adjustment interacts. This switching element can now external motor and / or be subjected to internal movement dependent, then in turn to effect the desired adjustment of the actuator.

at an external motor actuation of the actuator respectively of the adjustment causing switching element engages regularly a motor directly or indirectly to the switching member to this so to urge that the movement of the switching element to an adjustment of the actuator and consequently the desired compression or relaxation of the spring corresponds. In the case of internal movement-dependent Adjustment is done so that the switching element in dependence from a door movement experiences an imposition. That is, for example, the pivotable about a pivot point Door leaf acts on the switching element. Dependent on from the movement of the door is now the switching element and, in turn, causes an adjustment the actuator and as a result, a compression or discharge the spring depending on the direction of movement of the door leaf.

Indeed you become related to the internal movement-dependent Adjust the actuator so that the spring with increasing Bias is applied to the larger an opening angle the door panel against a motor vehicle body is designed. That is, the farther the door wing pivoted about his one or more body-mounted hinges and the larger the associated opening angle is measured, the more regularly the pen compressed and consequently increases the bias. To Corresponds that the coupling member with its two coupling elements respectively the slats realized at this point an increased Closing force experiences with increasing opening angle.

Vice versa the closing force of the coupling element decreases the smaller the opening angle is measured.

By the increase in the closing force with increasing opening angle the door of the invention carries the invention Circumstance bill that, for example, a wide open Door wing an increased attack surface represents for example wind. When the coupling member as friction brake device is used, it means that the friction brake device with increasing opening angle the door wing opposite the body opposes increased friction resistance. That's wanted and takes into account that with increasing opening angle the door wing increased holding forces the Reibbremsvorrichtung required in the form of the coupling member are.

A similar interpretation is recommended in the event that the coupling member transmits, for example, driving forces of an electric motor drive on the door leaf. In this case, too, the design will advantageously be made so that with increasing opening angle of the door leaf opposite the body or vehicle body, the closing force of the coupling member increases. This is recommended and is usually required in order to allow a safe drive of the door unit in total even at any and with increasing opening angle increasing counter-forces (for example, wind). In any case, according to the invention, the closing force of the coupling member can be changed automatically as it were, namely, depending on the movement, it can be adjusted internally. In this case, the increasing opening angle of the door leaf corresponds to the fact that with the aid of the drive shaft via the regularly rotatably connected switching member, the actuator is acted upon so that as a result of the growing opening angle, the coupling member acting spring is increasingly compressed. Conversely, the closing force acting on the coupling member decreases in the event that the door leaf is closed and consequently the opening angle of the door leaf relative to the body decreases.

The means, depending on the movement of the with the coupling member equipped door leaf is its closing force changed. In the context of the invention thus gives the movement of the door leaf or the associated opening angle the closing force of the coupling element (automatically).

Next this quasi-internal automatic and motion-dependent Adjustment of the actuator can this complement or also completely independent thereof already described experience motor external adjustment. With the help of this motor External adjustment ensures the engine realized for this purpose ensure that the bias of the spring to external specifications is set. This can be done via a control unit, in which, for example, from preliminary tests for the respective Door unit and the door used optimum values for the bias of the spring stored are set externally and depending on the opening angle and be specified by the engine. That is, in this case For example, the course of the most favorable bias voltage the spring for the coupling member over the opening angle of the door wing opposite the vehicle body Preliminary tests have been determined. This characteristic of the bias voltage opposite the opening angle of the door leaf Of course, from vehicle type to vehicle type or from Door leaves to door leaves vary and can be in each case in preliminary tests or as part of a capture the previous calibration.

The Characteristic which belongs to the relevant type of motor vehicle, will now be stored in the control unit. Depending on, for example a rotation angle sensor detected opening angle of the door leaf opposite the vehicle body is now using the aforementioned characteristic, the closing force of the Coupling member opposite the opening angle and the corresponding to the closing force bias of Spring selected and with the help of the control unit acted upon engine via the actuator actually adjusted to the spring. This can be an optimal and realize accurate adjustment of the bias voltage. That is true Of course, in the event that the coupling member as friction brake device is used as it is then, when the coupling member as a practical safety coupling between the electromotive drive and the door leaf driven by it acts. In any case, in the context of the latter variant ensures that the closing force of the coupling member is sufficient to flawless the door to be able to move back and forth but also a slipping operation at the same time in the event that allows the door leaf For example, a braking torque attacks, which with the coupling member exceeds set closing force. This is urgently needed for safety reasons.

in the Detail, it has been proven, if the actuator as adjusting sleeve is trained. If it is advantageous embodiment is an axial actuator, the adjusting sleeve is as Axialstellhülse executed. The adjusting sleeve is generally arranged radially in relation to the drive shaft, which in contrast is in the center. This means, the adjusting sleeve is usually cylindrical. The same may apply to the switching element. In this way can the actuator and the switching element coaxially in comparison Arrange to the drive shaft, respectively the other hand, centrally is placed. As already explained, that interacts Actuator with the switching element for its adjustment.

there it has proven useful if the switching element rotative and, where appropriate is designed axially movable. In contrast, the actuator is usually rotated store firmly and axially movable. Because at the actuator respectively Axial actuator, it depends primarily on this an axial movement compared to the drive shaft and consequently the spring enclosing the drive shaft executes, to the desired change in the bias voltage to be able to realize.

in the Generally, the motion transmission is done by the most rotating switching member on the actuator such that the Switching member and the actuator with corresponding inclined surfaces abut each other. A rotational movement of the switching element leads So that the actuator by the interlocking inclined surfaces is axially adjusted and the voltage applied to the actuator spring compressed or relaxed.

In detail, the actuator has a the Spring at one end overarching stop. In addition, the actuator may have a spring-enclosed guide portion. As a result, the guide portion as it annularly enclosing spring is performed properly in their compression and relaxation.

It is possible that the spring by means of the actuator or Axial actuator only at one end with a corresponding Biasing force is applied. Of course it lies it is also within the scope of the invention, with two opposing ones Actuators respectively axial actuators to work, the Change spring in length from both ends. This is usually done when the bias of the spring sohl motor externally as well as motion-dependent internally a change experiences.

In In this case, the actuator is located at one end of the spring motor external variation of the bias while the other end of the spring with an actuator to the motion internal change of the bias voltage is equipped. This is of course only exemplary and not limiting to understand. In addition, like the actuator or axial actuator be formed in several parts. Here it has proven when the actuator via an actuator and a guide element features. Besides, it is cheap if the actuator in axial extension to a housing for the coupling member to the relevant housing followed. This will be the already mentioned compact Design provided. Furthermore allows the invention thus a variant, according to which the drive shaft the housing for the coupling member and at the same time the actuator and the switching element penetrates.

in the The result is a door unit, in particular motor vehicle door unit provided by a specially designed Coupling member with variable closing force distinguished. Actually, the closing force of the coupling member in principle two different ways changed.

First Once there is the possibility of the bias of the Closing force changing spring motor externally to adjust. That can be based on characteristics for the optimal Preload depending on the opening angle the door panel opposite the vehicle body respectively. It is just as good alternative or in addition conceivable, the bias tends to increase with the opening angle between the door and the vehicle body to increase. That is, depending on learns of the movement of the door leaf the spring biasing the coupling member a varying loading, which then also to a correspondingly changed closing force of the coupling member leads. All this can be done in a strikingly simple and constructive way and considering realize a particularly compact design.

in the The invention will be described below with reference to a purely exemplary embodiment descriptive drawing explained in more detail; show it:

1 an installation situation of the door unit according to the invention,

2 the door unit according to the invention in a perspective view, partly in section,

3 a detail from 1 for motor-external adjustment of the closing force of a coupling element,

4 another detail 1 , which has the movement-dependent internal adjustment of the closing force of the coupling element to the object and

5 different characteristics of the door wing attacking and generated by the coupling member force as a function of the opening angle of the door leaf.

In the 1 to 4 a door unit is shown, which in its basic structure consists of a door leaf 1 , a motion transmitting member 3 . 4 and finally a coupling member 5 variable closing force. At the door 1 it is a swing door wing 1 that is about a pivot point 2 swinging back and forth, as this is a double arrow in the 1 suggests. The door leaf or swing door leaf 1 is on a rack 3 connected, which is part of the motion transmission member 3 . 4 is.

Swiveling movements of the door leaf respectively swing door leaf 1 correspond to linear movements of the rack in question 3 , also in the 1 are indicated and of a gear arrangement ultimately on a drive shaft 4 be transmitted. By the indicated pivoting movements of the door leaf 1 becomes the drive shaft 4 in rotations. The rotations of the drive shaft 4 can be damped, with the help of the coupling member 5 which works in this case as a friction brake device.

Alternatively, the coupling member 5 but also as a kind of safety coupling work, namely in the transmission of rotational movements of an electric motor drive 6 on the door 1 , In fact, with the help of the elek tromotive drive 6 or the electric motor 6 a the coupling member 5 enclosing housing 7 in rotations. The rotations of the housing 7 be on the drive shaft 4 transfer. The drive shaft 4 For its part, the gearbox or the gearwheel assembly is rotated, so that, depending on the direction of rotation, the rack 3 is moved in one direction or the other. Because of the rack 3 the door leaf or swing door leaf 1 is connected, this follows the corresponding and the electric motor 6 predetermined movements.

If this process occurs, for example, a mechanical blockage of the swing door leaf 1 , so catch the coupling member 5 to slip on or slip through, so that the electric motor 6 no damage. For this purpose, the coupling member sits 5 in detail from at least one stationary coupling element 5a and one with the drive shaft 4 with moving coupling element 5b together. In fact, the respectively co-moving coupling element 5b together with the housing 7 in rotations. These rotations of the respective coupling element 5b be on the hereby rotatably coupled drive shaft 4 transfer. The movements of the drive shaft 4 are attenuated, depending on the force with which the stationary coupling elements 5a to the movable coupling elements 5b be created.

Because the two coupling elements 5a . 5b or realized at this point and the drive shaft 4 ring-like enclosing clutch plates respectively fins 5a . 5b are in engagement with each other or rubbing against each other, in the case of a friction brake device movements of the door leaf 1 braked accordingly or the rotational movements of the electric motor 6 with an associated closing force of the coupling member 5 transfer.

In the context of the invention can now be the closing force of the coupling member 5 change. For this purpose is a spring 8th provided, which for varying the closing force of the coupling member 5 serves. At the spring 8th it is a coil spring, in the center of the drive shaft 4 is arranged. The spring respectively coil spring 8th is concentric to the slats or clutch plates 5a . 5b arranged. By the spring 8th the coupling member 5 or the associated slats 5a . 5b applied, the frictional force between the slats in question can be 5a . 5b and hence the closing force of the coupling member 5 vary.

For this purpose, the invention proposes an actuator 9 . 9 ' ago, which is the spring in question 8th applied. In fact, in the representations are two actuators 9 . 9 ' , realized. Both actuators 9 . 9 ' , can be separated from each other or together the spring 8th apply or change their bias. The actuator 9 is adjusted externally by motor. In contrast, the actuator learns 9 ' an internal adjustment, depending on the movement. The movement dependence can be explained by movements of the door leaf 1 and hence rotations of the drive shaft coupled thereto 4 ,

According to the embodiment, the spring is located 8th or coil spring 8th each at the relevant actuator 9 . 9 ' at. To every actuator 9 . 9 ' belongs to an associated switching element 10 . 10 ' , The actuator 9 . 9 ' and associated switching element 10 . 10 ' interact with each other in such a way that by their mutual interaction the bias of the spring 8th and consequently the closing force of the coupling member 5 is changed. At the respective actuator 9 . 9 ' it is according to the embodiment, a setting sleeve 9 . 9 ' , Here is the adjusting sleeve 9 as Axstellstellhülse 9 whereas it is the adjusting sleeve 9 ' around a threaded sleeve 9 ' is. The respective actuator 9 . 9 ' or the adjusting sleeve 9 . 9 ' encloses the drive shaft 4 each ring-like or in the manner of a cylinder. The drive shaft 4 is in contrast arranged in the center. Also the associated switching element 10 . 10 ' is each cylindrical in shape and with the drive shaft arranged in the center 4 equipped. Both the actuator 9 . 9 ' as well as the switching element 10 . 10 ' are each the same axis compared to the drive shaft 4 placed.

The switching element 10 . 10 ' can be rotated in each case and also optionally adjust axially. The suggest appropriate arrows in the 3 and 4 at. In contrast, the respective actuator 9 . 9 ' only be moved in the axial direction A. For this purpose, the respective actuator has 9 . 9 ' over a footbridge 11 respectively. 11 ' , The jetty 11 respectively. 11 ' prevents a rotary movement of the associated actuator 9 . 9 ' in comparison to the housing 7 or a housing 7 ' which is the actuator 9 ' assigned.

In the embodiment of the 3 or according to the 4 the bridge attacks 11 ' of the actuator 9 ' in an unillustrated axial groove of the housing 7 ' one. The bridge provides similar results 11 that in conjunction with an axial groove in the associated housing 7 Rotary movements of the actuator 9 opposite the housing 7 be prevented. That is, with the help of the bars 11 . 11 ' ensures that the associated actuators 9 . 9 ' opposite the corresponding housings 7 . 7 ' are each designed only axially movable. Comparable bars 11 also have the case with the case 7 with moving coupling elements 5b on. In this way, the coupling elements 5b not opposite the case 7 but rather are from the housing 7 taken.

The actuator 9 is - as already stated - motorized externally adjusted. For this purpose, there are the switching element 10 and the actuator 9 with corresponding inclined surfaces 12 . 13 equipped, which abut each other. In the context of the detailed representation after 3 are the shelves 12 . 13 each wedge surfaces on the one hand the switching element 10 and on the other hand the actuator 9 ,

By the switching element 10 in rotations, it ensures that by the interlocking inclined edges or shelves 12 . 13 the actuator 9 is raised or lowered in the direction of the arrow. This will be the spring 8th compressed or relieved. A compression of the spring 8th causes that from the spring 8th acted coupling member 5 with the local slats 5a . 5b is acted upon by an increased closing force. As a result, the fins become 5a . 5b stronger pressed against each other and generate an increased frictional force during operation of the door unit according to the invention or of the coupling member 5 as if friction brake device. A comparably increased closing force is of course also present when the coupling member 5 practically as a safety coupling in conjunction with the electric motor or electric motor drive 6 is used.

In the context of the detailed representation after 4 and looking at the movement-dependent internally adjusted actuator 9 ' , it is the corresponding inclined surfaces 12 ' . 13 ' around inclined edges 12 ' . 13 ' of intermeshing threads on the one hand of the actuator 9 ' and on the other hand the switching element 10 ' , Because the drive shaft 4 for the realization of the motion-dependent internally adjustable actuator 9 ' rotationally fixed with the switching element 10 ' is connected, performs a rotation of the drive shaft 4 automatically to the fact that the only axially movable actuator 9 ' opposite to the drive shaft 4 co-rotating switching element 10 ' is screwed in or unscrewed. That depends on the direction of rotation of the drive shaft 4 from.

As already explained, the movement-dependent internally adjustable actuator 9 ' around a threaded sleeve 9 ' , The switching element 10 ' is designed as a threaded bush. Depending on the direction of rotation of the drive shaft 4 becomes the spring again 8th compressed or relaxed, as the associated arrow in the 4 suggests. Consequently, depending on the rotational movement of the drive shaft 4 the closing force of the coupling member 5 vary again.

In the motion-dependent internally adjustable actuator 9 ' , the closing force of the coupling member 5 thereby changing that the actuator 9 ' internally undergoes an adjustment, depending on movement. Depending on whether the drive shaft 4 moved at all and, if so, in which direction does the coupling member experience 5 a variation of its closing force. In fact, the drive shaft actually provides 4 for internal adjustment, depending on their movement. As soon as the drive shaft 4 turns, becomes the spring or coil spring 8th compressed or relaxed, depending on the direction of rotation of the drive shaft 4 , This leads to the described movement-dependent and internal adjustment of the actuator 9 ' ,

In contrast, the actuator can be 9 motor externally adjust, as this particular detail after 3 shows. In this case, namely, the switching element 10 from an additional engine 14 acted upon by a driven gear, which with the switching element 10 Combs, ensures that the switching element 10 is rotated. Depending on the direction of rotation and angle of rotation of the switching element 10 becomes the actuator 9 moved more or less in the axial direction A. As a result, the spring experiences 8th a compression or discharge.

Accordingly, can be with the help of the additional motor drive or the additional electric motor 14 via the switching element 10 and the actuator 9 the bias of the spring 8th and hence the closing force of the coupling member 5 individually set and pretend. - Regardless of the coupling member 5 alternatively or additionally changed with respect to its closing force, with the aid of the motion-dependent internally adjustable actuator 9 ' ,

In connection with the motor externally adjustable actuator 9 likes in a control unit, not shown, for acting on the electric motor 14 a characteristic be stored. An example of this is in the 5 shown. Of course, several characteristic curves can be stored in the control unit in question. The characteristic expresses the dependence of the bias for the spring 8th opposite to an opening angle α of the door leaf 1 compared to a motor vehicle body. Depending on the application, different characteristics and specifications can be considered. Anyway, with the help of the additional electric motor 14 the closing force of the coupling member 5 - regardless of the particular in the 4 represented and movement-dependent internally adjustable actuator 9 ' including switching element 10 ' - Be set using external and stored for example in the control unit specifications or characteristics.

Looking now at the 5 in detail, like that one recognizes those from the coupling member 5 on the door 1 constructed force or counterforce F against the opening angle α of the door leaf 1 , This counterforce or holding force F may have the dot-dashed course relative to the opening angle α when the bias of the spring 8th is not varied. In contrast, the bias of the spring 8th increases with increasing opening angle α, so you observed a solid curve (according to the invention).

That is, within the scope of the invention, the bias of the spring 8th at the beginning of the door opening, ie be set low at an opening angle α in the range of 0 °. The holding force F of the coupling member 5 is then only about twice as large as a dashed illustrated manual operating force for the door or swing door 1 , This manual operating force (dashed) is due to frictional resistance of the door leaf 1 automatically and neglects virtually forces or holding forces F of the coupling member 5 , According to the invention, the holding force F or its on the door leaf 1 additionally constructed counterforce can be adjusted so that this force is low at the beginning of the door movement and increases only with increasing opening angle α. In this way, the invention takes into account, inter alia, the fact that, for example, a wide-open door 1 represents an increased attack surface for example wind.

The continuous course of the holding force or counterforce F on the door leaf 1 According to the invention on the one hand with the aid of the motion-dependent internally adjustable actuator 9 ' and on the other hand additionally by the motor externally adjustable actuator 9 specified. In fact, the spring will 8th in the context of the embodiment as it were between the two actuators 9 . 9 ' and the switching elements 10 . 10 ' locked in. Here is the actuator 9 ' including switching element 10 ' for the movement-dependent internal adjustment arranged at the upper end of the spring, whereas the actuator 9 including switching element 10 for motorized external adjustment at the lower end of the spring 8th place.

Finally, the figures still make it clear that both the actuator 9 as well as the actuator 9 ' are formed in two parts. This results in particular from the 3 and 4 , In fact, the respective actuator sits down 9 . 9 ' from as it were an actuator 9a . 9a ' on the one hand and a guide element 9b . 9b ' on the other hand together. The guide element 9b . 9b ' ensures primarily for the leadership and support of the spring 8th whereas the actuator 9a . 9a ' transfers the positioning movements.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19844265 A1 [0002]
• - DE 10114938 B4 [0004]
• DE 102005060709 A1 [0007]

Claims (10)

Door unit, in particular motor vehicle door unit, with a door leaf ( 1 ) connected motion transmission member ( 3 . 4 ) with drive shaft ( 4 ), and with a coupling member ( 5 ) variable closing force, which with the drive shaft ( 4 ) interacts, the coupling member ( 5 ) with at least one with the drive shaft ( 4 ) with moving coupling element ( 5a ) and a stationary coupling element ( 5b ), both from a common spring ( 8th ) are biased, characterized in that the bias of the spring ( 8th ) by means of at least one actuator ( 9 . 9 ' ) is changed. Door unit according to claim 1, characterized in that the actuator ( 9 . 9 ' ) is adjusted internally by a motor, externally and / or depending on the movement. Door unit according to claim 1 or 2, characterized in that the actuator ( 9 . 9 ' ) as adjusting sleeve ( 9 . 9 ' ), in particular Axstellstellhülse ( 9 ) or threaded sleeve ( 9 ' ) is formed, each radially compared to the drive shaft ( 4 ) is arranged. Door unit according to one of claims 1 to 3, characterized in that the actuator ( 9 . 9 ' ) with a switching element ( 10 . 10 ' ) interacts with its adjustment: Door unit according to one of claims 1 to 4, characterized in that the actuator ( 9 . 9 ' ) and the switching element ( 10 . 10 ' ) coaxially compared to the drive shaft ( 4 ) are arranged. Door unit according to one of claims 1 to 5, characterized in that the switching element ( 10 . 10 ' ) is formed rotatably and optionally axially movable, while the actuator ( 9 . 9 ' ) is rotationally fixed and axially movable. Door unit according to one of claims 1 to 6, characterized in that the actuator ( 9 . 9 ' ) and the switching element ( 10 . 10 ' ) with corresponding inclined surfaces ( 12 . 13 ; 12 ' . 13 ' ) abut each other. Door unit according to one of claims 1 to 7, characterized in that the actuator ( 9 . 9 ' ) in several parts with an actuating element ( 9a . 9a ' ) and a guide element ( 9b . 9b ' ) is trained. Door unit according to one of claims 1 to 8, characterized in that the actuator ( 9 . 9 ' ) in axial extension to a housing ( 7 . 7 ' ). Door unit according to claim 9, characterized in that the drive shaft ( 4 ) the housing ( 7 . 7 ' ), the coupling member ( 5 ) and the actuator ( 9 . 9 ' ) as well as the switching element ( 10 . 10 ' ) penetrates together.

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