DE102017102809B4 - Device for stepless locking of a vehicle door - Google Patents

Abstract

Device (3) for steplessly locking a vehicle door (2), comprising a first fastening section (5) for attachment to a vehicle body (4), with a second fastening section (6) for fastening to the vehicle door (2), with a guide unit (7 ), wherein the guide unit (7) is connected to the first fastening portion (5), with a locking unit (8), wherein the locking unit (8) is connected to the second fastening portion (6), wherein the locking unit (8) by the guide unit (7) in a direction of movement (B) is guided, wherein the locking unit (8) relative to the guide unit (7) in the direction of movement (B) along a Arretierungsstrecke (AS) displaceable and in different positions along the Arretierungsstrecke (AS) can be locked characterized in thatthe guide unit (7) has a first multi-plate clutch portion (13a) and the detent unit (8) has a second multi-disc clutch the first and second multi-disc clutch portions (13a, 13b) together constitute a multi-plate clutch, wherein the multi-disc clutch (13) locks the locking unit (8) relative to the guide unit (7), the device (3) comprises an adjusting actuator (19), wherein the Verstellaktorik (19) increases the frictional force (RK) of the multi-plate clutch (13), so that the locking unit (8) in the direction of movement (B) is blocked, wherein the Verstellaktorik (19) as a rotary-linear converter and the adjusting actuator (19) has a first and a second clamping plate (21, 22) and at least one rolling body (24), wherein the Wälzköper (24) between the two clamping plates (21, 22) in a clamping ramp track (22a) is arranged , wherein in a rotation of the two clamping plates (21, 22) against each other via the rolling elements (24) a distance between the two clamping plates (21, 22) is variable and a linear movement to the multi-plate clutch ( 13) is transmitted, so that the friction force (RK) of the multi-plate clutch (13) is adjustable.

Description

The invention relates to a device for stepless locking of a vehicle door with a first attachment portion for attachment to a vehicle body, with a second attachment portion for attachment to the vehicle door, with a guide unit, wherein the guide unit is connected to the first attachment portion, with a locking unit, wherein the Locking unit is connected to the second fastening portion, wherein the locking unit is guided by the guide unit in a direction of movement, wherein the locking unit relative to the guide unit in the direction of movement along a Arretierungsstrecke displaceable and in different positions along the Arretierungsstrecke can be locked. Application is a vehicle with this device.

Vehicle doors are connected via at least one hinge pivotally connected to the vehicle body, wherein by means of a locking device, the vehicle door usually engages, for example, in two or three predetermined positions. Furthermore, systems are known from the prior art, which allow a stepless locking of the vehicle door, so that the vehicle door is held in any opening positions. For this purpose, in particular hydraulic devices are known, such as e.g. Hydraulic piston cylinder, which block the piston by closing the flow path, so that a previously set door position can be locked continuously.

The publication DE 10 2004 023 667 A1 describes a locking device for a motor vehicle door with a first assembly in the form of a filled with a working medium, elongated guide tube and a second assembly in the form of a slidably mounted in the guide tube piston, one of the two assemblies is provided for connection to a motor vehicle door and the other module is provided for connection to a further body part of a motor vehicle and wherein the piston is steplessly lockable in different positions within the guide tube. The working fluid can be brought into a state by changing its temperature from a state in which it prevents a movement of the piston in the guide tube, in which it allows movement of the piston in the guide tube by displacement of the medium.

The DE 10 2012 110 449 A1 shows a locking device for locking a movable relative to a motor vehicle structure between two end positions motor vehicle part, such as a motor vehicle door, which is locked by means of the locking device in a respective achieved by displacement rest position between the two end positions.

The DE 10 2012 108 094 A1 shows a locking device for locking a movable relative to a motor vehicle structure between two end positions motor vehicle part, which is locked by means of the locking device in a respective achieved by displacement rest position between the two end positions, with at least two friction elements of the locking device whose friction surfaces during displacement of the motor vehicle part are relatively movable and abut each other in a respective rest position of the motor vehicle part under static friction conditions.

The DE 199 06 708 A1 shows a mechanical door lock for vehicle doors with a door pillar hinged to the door pillar and a door arranged on the holder housing in which a holding device is arranged with a housing-fixed abutment on the one and a spring-loaded, perpendicular to the handle bar movement direction holding body on the other side of the door retaining bar wherein in the holder housing, a driver is arranged, which engages with a sliding element on the door retaining rod and on which a release lever is articulated, wherein on the holder housing an amplifier lever is rotatably mounted, on which the holding body is rotatably mounted and on which the release lever engages in such a way, in that when the vehicle door is opened or closed, the driver, which is moved by the sliding element with the door retaining bar, pivots the amplifier lever into the release position of the holding body.

The DE 42 07 706 A1 shows a stepless door lock for motor vehicle doors, consisting of a posted on a door assembly part first part, in particular a holding element and a second part of the door assembly posted second part, in particular a braking and / or locking element, wherein in conjunction with a the inclination of the door hinge axis to its normal position A device for generating an unimpeded freewheeling of the door in the closing direction are provided for detecting the self-propulsion of the vehicle door resulting from the inclination position of the hinge axis and optionally in further connection with the two aforementioned devices.

According to the invention, a device for stepless locking of a vehicle door is proposed, which is suitable and / or designed for a vehicle door. The device serves, in particular, to lock the vehicle door steplessly at each opening angle and / or to lock it, so that the vehicle door is in the corresponding position Position is held. Preferably, the vehicle door is designed as a driver's door and / or a passenger door and / or a rear door and / or a rear door. The device is particularly preferably integrated in the vehicle door.

For this purpose, the vehicle door has a first and a second attachment portion, wherein the first attachment portion is connected to a vehicle body and the second attachment portion is connected to the vehicle door. Preferably, the first and / or the second attachment portion are fixedly connected to the vehicle body or the vehicle door, so that when opening or closing the vehicle door, the first and / or second attachment portion forms a tight fit. In particular, the first and / or the second attachment portion are connected via at least one attachment means to the vehicle body or the vehicle door.

For example, the fastening means is designed as a screw or bolt or dowel pin, etc.

The device has a guide unit, wherein the guide unit is connected to the first attachment portion. In particular, the guide unit is bonded and / or frictionally and / or non-positively and / or positively connected to the first attachment portion. Preferably, the first attachment portion has a joint member. The joint member is directly connected to the vehicle body, so that in particular a rotary joint is formed. Particularly preferably, the joint member is formed as a hinge or a joint head. The guide unit can be connected directly to the joint organ. Optionally additionally, the first fastening section has an extension element, wherein the extension element connects the guide unit to the joint element or extends the joint element into the interior of the door. For example, the extension member is designed as a threaded rod.

The device has a locking unit, wherein the locking unit is connected to the second fastening portion. In particular, the locking unit is integrally and / or frictionally and / or non-positively and / or positively connected to the second attachment portion. For example, the locking unit may comprise a screw means or a bolt or a rivet as the fastening means, wherein in particular the fastening means forms the second fastening portion. For this purpose, the locking unit is particularly preferably fixedly connected to the vehicle door, preferably with a door trim and / or a door inner panel, via the screw means.

The locking unit is guided by the guide unit in a direction of movement, wherein the locking unit is displaceable relative to the guide unit in the direction of movement along a Arretierungsstrecke displaceable and in different positions along the Arretierungsstrecke. In particular, the locking unit is guided straight through the guide unit, preferably linearly guided. For this purpose, the guide unit particularly preferably has a guide section, wherein the locking unit is arranged in the guide section. By opening the vehicle door, the locking unit is displaced relative to the guide unit in the guide portion along the Arretierungsstrecke, at the same time the locking unit remain stationary to the vehicle door and / or the guide portion stationary to the vehicle body. In particular, the vehicle door is held in an opening angle by the locking of the locking unit. For example, the opening angle is in a range of more than 1 degree and less than 90 degrees.

According to the invention, the guide unit has a first multi-disc clutch section and the locking unit has a second multi-disc clutch section, the first and the second multi-disc clutch section together forming a multi-disc clutch, the multi-disc clutch locking the locking unit relative to the guide unit. In particular, a basic friction between the first and the second multi-plate clutch section is generated by the multi-plate clutch, wherein the base friction is preferably so high that the vehicle door is self-holding in each opening angle. During an opening or closing operation, the basic friction, preferably by a slight force exerted by the vehicle occupant, is converted into sliding friction, so that the vehicle door can be opened or closed. In particular, the multi-plate clutch is designed as a translational lockable multi-plate clutch. The first multi-plate clutch section preferably has the guide section. Particularly preferably, the first and the second multi-plate clutch section are connected to each other via the screw means of the locking unit. Specifically, the guide unit and / or the locking unit is formed as the first and the second multi-plate clutch section.

The advantage of the invention is that a simple and cost-effective implementation of a continuous locking of vehicle doors can be realized by the multi-plate clutch. A further advantage consists in particular in the fact that the inventive design of the Device, the vehicle door is self-holding at any opening angle, with the multi-plate clutch is a particularly robust and reliable system is formed. Furthermore, the maintenance and / or repair costs for the device is reduced. For example, in hydraulic systems for locking the door, a certain spring force for opening and closing the valve must be overcome, which leads to a swinging of the door. By the system according to the invention a swinging of the vehicle door is prevented.

In a preferred embodiment of the invention, the first multi-plate clutch section has a plurality of guide plates and the second multi-plate clutch section has a plurality of locking plates, wherein the guide plates are arranged in alternating sequence between the Arretierungslamellen. In particular, a guide plate is always arranged between two Arretierungslamellen. Alternatively, a locking lamella is always arranged between two guide blades. Preferably, the guide plates and the locking lamellae contact each other flatly. The multi-plate clutch has in particular more than two, preferably more than four, in particular more than eight guide plates and / or locking lamellae. In particular, however, the number of guide and / or locking lamellae are adaptable to the vehicle type and / or the vehicle size and / or the weight of the vehicle door.

The guide plates and / or the locking lamellae are designed as friction plates, so that a frictional engagement between the first and the second multi-plate clutch section is formed. In particular, due to the frictional engagement, the base friction is generated. Preferably, the friction plates on a friction lining, so that the frictional engagement is favored. For example, the friction lining is designed as a paper coating and / or a plastic fiber coating and / or a sintered bronze coating and / or a graphite coating.

In a preferred structural implementation, the guide blades extend in the direction of movement longer than the locking lamellae. In particular, the guide plates are flat rod-shaped and the locking lamellae disc-shaped. Preferably, the guide blades each have an elongated guide opening extending in the direction of movement, in particular a slot, as the guide section. Particularly preferably, the locking unit, in particular the screw means, arranged in the guide opening and displaceable in the direction of movement. The guide opening limits the locking path in the direction of movement, so that the locking unit is limitedly displaceable within the guide opening in the direction of movement.

In particular, the screw means defines a locking axis, wherein in a projection from above, the locking axis intersects the direction of movement at right angles. Preferably, the locking lamellae are designed as annular discs, wherein the locking lamellae are particularly preferably arranged coaxially and / or concentrically with the locking axis. In particular, the locking lamellae are slide-mounted to the guide lamellae, wherein the latches slide, preferably when opening or closing the vehicle door along the guide lamellae in the direction of movement.

In a structural concretization, the locking unit has a spring device, wherein the spring device acts on the multi-plate clutch with a spring force, so that the frictional force of the multi-plate clutch is increased. In particular, the base friction in the multi-plate clutch is generated or increased by increasing the friction force. Preferably, the spring device is designed as a helical spring or a leaf spring package or cup spring package.

In particular, the spring device is arranged coaxially and / or concentrically to the locking axis, wherein the spring device acts on the first and / or the second multi-plate clutch section in the axial direction with the spring force. For this purpose, the second multi-plate clutch section preferably has a pressure plate and a spring sleeve, wherein the guide plates, the locking lamellae and the spring device are arranged between the pressure plate and the spring sleeve. Particularly preferred are in successive orders the pressure plate is the screw, the locking and the guide blades in alternating order, the spring means and the spring sleeve arranged coaxially and / or concentrically with the screw means. Specifically, the spring means urges the guide blades and the locking blades in the direction of the pressure plate with the spring force. In particular, the spring sleeve is used for positioning the spring device and / or as block protection for the spring device. Furthermore, the spring force is adjustable via the screw. For example, by tightening the screw means the distance between the spring sleeve and the pressure plate is reduced, so that the spring force and thus the frictional force is increased.

According to the invention, the device has an adjustment, wherein the Verstellaktorik increases the frictional force of the multi-plate clutch, so that the locking unit is blocked in the direction of movement. In particular, the Verstellaktorik used to the multi-plate clutch with an additional pressure force to act on. Preferably, the frictional force is increased and / or a static friction of the multi-plate clutch higher than the base friction, so that the locking unit is blocked in the direction of movement and further opening or closing of the vehicle door is prevented. Particularly preferably, the frictional force and / or the spring force and / or the static friction in the blocked state is greater than the frictional force and / or the spring force and / or the basic friction in the locked state of the locking device.

Optionally, in addition, the adjustment actuator can be signal-technically connected to a sensor system for detecting collision objects, so that a collision of the vehicle door with objects located in the vicinity is prevented by the blocking of the locking unit. Preferably, the sensor system comprises at least one ultrasonic sensor and / or a camera and / or a laser scanner. It is particularly preferred to detect a collision object, e.g. Cyclist or parked car, etc., the Verstellaktorik activated, preventing further opening of the vehicle door and / or the opening angle of the vehicle door is limited.

In a preferred embodiment of the invention, the Verstellaktorik for adjusting the spring force is formed, wherein when increasing the spring force, a frictional force of the multi-plate clutch is increased, so that the locking unit is blocked in the direction of movement. In principle, the guide unit may comprise the adjusting actuator, but particularly preferably the locking unit has the adjusting actuator. In particular, the Verstellaktorik via the second multi-plate clutch section, preferably via the pressure plate and / or the spring sleeve, coupled to the spring device and / or connected. Alternatively, the Verstellaktorik can also be connected directly to the spring device. When activating the Verstellaktorik the spring device is acted upon in the axial direction with respect to the locking axis with a compressive force, wherein the spring is compressed and at the same time the spring force and the bias of the spring is increased.

Specifically, the pressure plate, the guide plates, the Arretierungslamellen, the spring means and the spring sleeve slidably pushed onto the screw means, wherein the screw means is firmly connected to the body. Upon activation of the Verstellaktorik particular the pressure plate and / or the guide and / or the Arretierungslamellen and / or the spring means and / or the spring sleeve in the axial direction with respect to the Arretierungsachse be moved, preferably a distance between the pressure plate and the spring sleeve is reduced is and thus the spring means and / or the guide and the locking lamella are compressed.

According to the Verstellaktorik is designed as a rotary-linear converter. In particular, the adjusting actuator has a drive device. Preferably, the drive device is designed as an electric motor, in particular as a stepper motor. Particularly preferably, the adjusting actuator is designed to convert a rotational movement of the drive device into a linear movement. In particular, the linear movement takes place along the locking axis in the axial direction, so that the friction force increases and / or the spring force is adjusted.

According to the invention the Verstellaktorik on a first and a second clamping plate and at least one rolling element, wherein the Wälzköper is disposed between the two clamping plates in a clamping ramp track. In particular, the Wälzköper contacts the first and the second clamping plate in the axial direction with respect to the locking axis. Preferably, the first and / or the second clamping plate is arranged coaxially and / or concentrically with the locking axis. Particularly preferably, the first clamping plate is displaceable in the axial direction and / or non-rotatably pushed onto the screw means. Particularly preferably, the first clamping plate is flat against the pressure plate and / or is positively connected thereto. For example, the rolling element is designed as a ball or a roller. In particular, the Verstellaktorik more than two, preferably more than four, in particular more than six rolling elements. Preferably, each rolling element is received separately in a separate pocket-like recess.

In particular, the first clamping plate is designed as a cage disc, wherein the first clamping plate has at least one pocket-like recess for receiving the at least one rolling element. In particular, the second clamping plate is designed as a link disc, wherein the second clamping plate has the clamping ramp track for guiding the at least one rolling body.

Upon rotation of one of the clamping plates relative to the other, a distance between the two clamping plates is variable via the at least one rolling element, wherein a linear movement is transmitted to the multi-plate clutch, so that the frictional force of the multi-plate clutch is adjustable. In particular, the clamping ramp track has a contour on which the rolling element rolls during the rotation between a release position and a clamping position. Preferably, the contour of the release position to the clamping position towards increasing, for example wedge-shaped, formed so that an axial distance between the first and the second clamping plate increased by the rolling element and at the same time the distance between the pressure plate and the spring sleeve is reduced. By in the bag-like Recess in the direction of rotation in relation to the locking axis held rolling elements of the rolling elements is forced to follow the force-displacement adapted clamping ramp track.

Due to the axial displacement of the first clamping plate in the direction of the spring device, the locking and the guide plates and / or the spring device are compressed, so that the clamping position is reached and the frictional force or the spring force is increased. When the second rotatable clamping plate is rotated back relative to the first non-rotatable clamping plate, the at least one rolling element moves downwards in the clamping ramp path, so that the axial distance between the first and the second clamping plate is reduced and at the same time the distance between the pressure plate and the spring sleeve is increased. As a result, in particular the guide plates and / or the locking lamellae and / or the spring device are relaxed, so that the release position is reached and the frictional force or the spring force is reduced.

The rotation takes place in particular by the drive device, which is connected to the second clamping plate. In principle, the drive device can be connected directly to the second clamping plate, wherein the rotational movement is transmitted directly to the second clamping plate. Optionally in addition, the Verstellaktorik have a gear, which is preferably rotatably connected to the second clamping plate, so that a rotation of the gear is transmitted to the second clamping plate. Particularly preferably, the gear and / or the second clamping plate is arranged coaxially and / or concentrically with the locking axis. In particular, the gear and / or the second clamping plate is rotatably supported by the screw means. Specifically, the drive means may include a motor pinion which engages and / or is coupled to the gear, such that a torque of the drive means is transmitted to the second pinch plate via the motor pinion and the gear.

Optionally additionally, the first and / or the second clamping plate on a stop contour, which is guided in a corresponding slot of the first and the second clamping plate. In particular, the stop contour or the slide serves to restrict a rotation of the first and / or the second clamping plate to a region between the release position and the clamping position. For example, the stopper contour is formed as a nose or a web or a pin and integrally, e.g. from a common casting, connected to the first or the second clamping plate. In particular, the stop contour extends in the axial direction with respect to the locking axis and is guided in the circumferential direction in the backdrop and / or limited by the backdrop. For example, the backdrop is formed by an arcuate recess and / or slot and / or groove, etc. on a radial outer side of the first or the second clamping plate. One advantage of the stop contour is, in particular, the possibility of operating the drive device in a specific work area with two end stops, which in turn reduces the regulatory effort.

In an alternative constructive embodiment, the Verstellaktorik on an eccentric, wherein a linear movement of the multi-plate clutch can be transmitted by a rotation of the eccentric, so that the frictional force of the multi-plate clutch is adjustable. In particular, the eccentric disc is used to convert the rotational movement of the drive device into the linear movement, so that the rotary-linear converter is formed. Preferably, the eccentric disc is for this purpose connected to the drive device, wherein the drive means rotates the eccentric disc by a rotation angle, wherein particularly preferably by the change in angle, a linear movement is transmitted to the multi-plate clutch, preferably to the spring device. In particular, the angle of rotation is more than 90 degrees, preferably more than 130 degrees, in particular more than 180 degrees.

Preferably, the eccentric disc transmission technology, particularly preferably via a transmission device, connected to the drive device. Alternatively, the eccentric rotatably, preferably connected via a shaft hub connection with the motor shaft. For example, the eccentric disc is designed as a circular disc, wherein the center of the eccentric disc is located outside a rotational axis of the drive device. Alternatively, the eccentric disc may also be formed as an elliptical disc, wherein the center of the eccentric disc is located outside or on the axis of rotation.

In principle, the eccentric disc on the multi-plate clutch, preferably the first and / or the second multi-plate clutch section, particularly preferably rest against the pressure plate and / or the spring sleeve and / or the spring device and / or at least one of the guide plates and / or at least one of the locking lamellae. However, the eccentric disk is particularly preferably located against the pressure plate, with the pressure plate being displaced in the axial direction with respect to the locking axis during a rotation of the eccentric disk. In particular, in a rotation of the eccentric disc in a first direction of rotation, the locking and the guide blades and / or the spring means are compressed, so that the friction force and the spring force can be increased. In particular, in a rotation of the eccentric disc in a second direction of rotation, which opposite to the first direction of rotation, the guide plates and / or the spring device relaxed so that the frictional force or the spring force can be reduced.

Optionally additionally, the adjusting actuator can have a return device. In particular, the restoring device serves to bring the eccentric disk back to a starting position after a rotation. Preferably, the return device is designed as a return spring. The return spring acts on the eccentric disk in the direction of rotation with respect to the axis of rotation with a tensile or compressive force, so that the eccentric disk is returned to the starting position in the second direction of rotation. The restoring device has the particular advantage that the drive device can be operated with only one direction of rotation, preferably in a certain working range, which significantly reduces the control effort for the control.

An application is a vehicle with the device as described above or according to one of the preceding claims. In particular, all vehicle doors, in particular at least the side doors, of the vehicle have the device. Alternatively, the device may also be designed as a retrofit kit, so that the vehicle door or the vehicle doors can be retrofitted with the device.

• 1 eine Seitenansicht einer Fahrzeugtür eines Fahrzeugs mit einer Vorrichtung zur stufenlosen Arretierung der Fahrzeugtür als ein Ausführungsbeispiel der Erfindung;
• 2a, b in einer Schnittdarstellung die Fahrzeugtür aus 1 in einem geschlossenen und einem geöffneten Zustand;
• 3 die Vorrichtung aus 1 in einer Explosionsdarstellung;
• 4a, b die Vorrichtung mit einer Arretierungseinheit in einer ersten und einer zweiten Endposition;
• 5a, b eine Schnittdarstellung der Arretierungseinheit in einer Löse- und einer Klemmposition;
• 6a, b einen Teilausschnitt einer Verstellaktorik der Arretierungseinrichtung aus den 5a, b in der Löse- und der Klemmposition;
• 7a, b die Arretierungseinrichtung in gleicher Darstellung wie in den 5a, b in der Löse- und der Klemmposition mit einer alternativen Ausführung der Verstellaktorik

Further features, advantages and effects of the invention will become apparent from the following description of a preferred embodiment of the invention and the accompanying figures. Showing:

• 1 a side view of a vehicle door of a vehicle with a device for continuously locking the vehicle door as an embodiment of the invention;
• 2a, b in a sectional view of the vehicle door 1 in a closed and an open state;
• 3 the device off 1 in an exploded view;
• 4a, b the device with a locking unit in a first and a second end position;
• 5a, b a sectional view of the locking unit in a release and a clamping position;
• 6a, b a partial section of a Verstellaktorik the locking device from the 5a, b in the release and the clamping position;
• 7a, b the locking device in the same representation as in the 5a , b in the release and the clamping position with an alternative version of the Verstellaktorik

Corresponding or identical parts are each provided with the same reference numerals in the figures.

The 1 shows a side view of a vehicle 1 in a partial section. In the illustration shown is the vehicle 1 shown from the driver's side, the vehicle 1 a vehicle door 2 , in particular a driver's door, having. In a highly schematic representation, the vehicle door 2 a device 3 for stepless locking of the vehicle door 2 on. The device 3 is on the one hand with the vehicle body 4 and on the other hand with the vehicle door 2 connected. For example, the device 3 in the vehicle door 2 integrated, the device 3 is arranged for example between the vehicle interior trim and the vehicle door panel.

The 2a and 2 B show in a sectional view of the vehicle door 2 in a top view. It shows the 2a the vehicle door in a closed and the 2 B in an open state. In the open state defines the vehicle door 2 an opening angle alpha ,

The device 3 has a first and a second attachment portion 5 . 6 on, wherein the first attachment portion 5 with the vehicle body 4 and the second attachment portion 6 with the vehicle door 2 connected is. The device 3 has a leadership unit 7 and a locking unit 8th on, with the leadership unit 7 with the first attachment portion 5 and the locking unit 8th with the second attachment portion 6 connected is. The leadership unit 7 serves to guide the locking unit 8th during an opening or closing operation of the vehicle door 2 in which the locking unit 8th this relative to the leadership unit 7 is moved. The leadership unit 7 is permanently fixed over the first attachment section 5 articulated with the vehicle body 4 connected. The locking unit 8th is permanently fixed, in particular stationary, on the second attachment portion 6 with the vehicle door 2 connected.

The locking unit 8th locks the leadership unit 7 so the vehicle door 2 in the opening angle alpha is locked. The locking unit locks 8th the leadership unit 7 stepless so that the vehicle door 2 within the opening angle alpha is infinitely lockable and / or lockable at any angle. For example, is the opening angle alpha in a range of more than 1 degree and less than 90 degrees.

The 3 shows the device 3 in an exploded view. The first attachment section 5 has a joint organ 9 and an extension organ 10 on. The joint organ 9 is designed as a condyle, wherein the joint organ 9 directly with the vehicle body 4 is connectable for example via a fastener. The joint organ 9 forms with the vehicle body 4 a rotary joint, with the vehicle door being accessible via the swivel joint 2 or the device 3 is pivotable.

The extension organ 10 is designed for example as a threaded rod and can thus in the joint organ 9 screwed or pressed. The extension organ 10 is to accommodate the leadership unit 7 formed, wherein the extension member 10 for this purpose, a U-shaped receiving portion 11 for receiving the guide unit 7 having. The extension organ 10 extends the leadership unit 7 in the vehicle door 2 so the device 3 , in particular the leadership unit 7 or the locking unit 8th for example, in the middle of the vehicle door 2 can be arranged. The leadership unit 7 is about a fixative 12 , For example, a screw, rivet, dowel pin, etc. with the receiving portion 11 connected.

The leadership unit 7 has a first multi-plate clutch section 13a and the locking unit 8th a second multi-plate clutch section 13b on, wherein the two multi-plate clutch sections 13a , b form a multi-plate clutch. By the multi-plate clutch is thus a frictional locking of the vehicle door 2 implemented.

The first multi-plate clutch section 13a can have four guide blades 14 and the second multi-plate clutch section 13b can have five locking louvers 15 have, wherein the guide plates 14 in alternating order between the locking lamellae 15 are arranged. For example, the locking lamellae 15 designed as friction plates, so that a frictional engagement between the two multi-plate clutch sections 13a , b is favored. For this purpose, the locking lamellae 15 For example, have a friction lining or a corresponding coating with a rough surface.

The second multi-plate clutch section 13b also has a spring device 16 , a spring sleeve 17 and a printing plate 18 on. The guide blades 14 , the locking lamellae 15 and the spring device 16 are between the pressure plate 18 and the spring sleeve 17 arranged. In particular, the spring device 16 between the spring sleeve 17 and the outermost Arretierungslamelle arranged or supported on these. For example, the spring device 16 formed by a plurality of disc springs arranged one behind the other or one or more plate spring packets.

Furthermore, the device 3 a Verstellaktorik 19 for adjusting a frictional force in the multi-plate clutch. The adjustment actuator 19 includes a drive device 20 , a first and a second clamping plate 21 . 22 , a gear wheel 23 as well as four rolling elements 24 , The rolling elements 24 are evenly distributed between the first and the second clamping plate 21 . 22 arranged. The first clamping plate 21 is with the pressure plate 18 and the second clamping plate 22 with the gear wheel 23 rotatably connected via a positive plug connection. The clamping plate 22 can have four or more clamp ramp tracks 22a each having a rolling element, wherein the clamping ramp tracks 22a in the direction of rotation with respect to the locking axis A are arranged evenly spaced from each other. Furthermore, the second clamping plate 22 on its radial outside a backdrop 22b on, which is in the direction of rotation with respect to the locking axis A sections extends.

The device 3 has a screwdriver 25 , as the fastener, on, with the screw means 25 at the same time the second attachment section 6 forms. The screwdriver 25 defines with its longitudinal extent a locking axis A , wherein in the following fixed order the gear wheel 23 , the second clamp 22 , the rolling elements 24 , the first clamping plate 21 , the pressure plate 18 , in alternating order, the locking and guide blades 14 . 15 , the spring device 16 and the spring sleeve coaxial and / or concentric with the locking axis A , in particular the screwdriver 25 , are arranged.

The guide blades 14 have a guide opening 26 for receiving the screwdriver 25 on, with the leadership unit 7 , in particular the first multi-plate clutch section 13a , and the locking unit 8th , in particular the second multi-plate clutch section 13b , about the screwdriver 25 connected to each other. The guide opening 26 is formed as a slot, the guide opening 26 a Arretierungsstrecke AS defined, along which the locking unit 8th slidable and lockable in different positions.

The 4a and 4b show in a three-dimensional representation of the device 3 in two different end positions. Here is the locking unit 8th through the leadership unit 7 , in particular the guide opening 26 , in one direction of movement B along the Arretierungsstrecke AS guided. The Arretierungsstrecke AS is in the direction of movement B through the guide opening 26 limited, so that a first and a second end stop is formed.

In the 4a is the locking unit 8th shown in a first end position, wherein the locking unit 8th has reached the first end stop. In the 4b is the locking unit 8th a second end position shown, wherein the locking unit 8th has reached the second end stop. Here is the distance between the locking unit 8th and the first attachment portion 5 smaller in the first end position than in the second end position. In particular, the locking device 8th in the first end position with a minimum distance and in the second end position with a maximum to the first attachment portion 5 arranged. For example, the difference between the minimum and the maximum distance is about 200 millimeters. In the first end position is the vehicle door 2 in the closed state. In the second end position is the vehicle door 2 in an open state, wherein the opening angle alpha occupies a maximum angle, so that the vehicle door 2 is open at most.

The 5a, b show in a sectional view along the locking axis A the locking unit 8th , The 5a shows the locking unit 8th in a release position and 5b in a clamping position. The spring device 16 acts on the guide and locking lamellae 14 . 15 in the 5a with a spring force FK so that a frictional force RK or a base friction between the guide blades 14 and the locking lamellae 15 is produced. During an opening or closing operation of the vehicle door 3 The basic friction is converted into a sliding friction, so that the vehicle door 3 can be opened or closed with little effort. Due to the prevailing frictional force RK becomes the vehicle door 3 held in any position by the frictional engagement in the multi-plate clutch.

The locking unit 8th is about the screwdriver 25 or the second attachment portion 6 firmly with the vehicle body 4 connected. It is especially the spring sleeve 17 flat on the bodywork 4 at. The spring sleeve 17 serves on the one hand for positioning the spring device 16 as well as block protection for the spring device 16 , The spring sleeve 17 is for example on the screwdriver 25 deferred and extends in the direction of the pressure plate 18 , The spring sleeve 17 is thus for receiving and / or positioning the guide plates 14 , the locking lamellae 15 and the printing plate 18 trained and thus serves as a guide in the axial direction with respect to the locking axis A for this.

The rolling bearings 24 are between the first and the second clamping plate 21 . 22 arranged, wherein the first clamping plate 21 as a cage disc with several pocket-like recesses 21a for receiving in each case a rolling element 24 is trained. Thus, a tight fit for the rolling elements 24 formed, wherein at a rotation of the second clamping plate 22 relative to the first clamping plate 21 the rolling elements 24 stationary to the first clamping plate 21 remain. This ensures that the rolling elements 24 at a rotation of the two clamping plates 21 . 22 to each other, in the Klemmrampenbahnen 22a roll.

The adjustment actuator 19 is formed in the illustration shown as a rotary-linear converter, wherein a rotational movement of the drive means 20 in a linear movement in the axial direction along the locking axis A is converted. Due to the executed linear movement, the spring device 16 and the guide and locking lamellae 14 . 15 in the axial direction with respect to the locking axis A compressed, with the spring force FK and thus the frictional force RK , as in 5b is shown, increased and the clamping position is reached. In particular, the locking unit 8th in the clamping position in the direction of movement B blocked, leaving a further opening or closing the vehicle door 2 is prevented. For example, thus is a collision prevention measure with eg other road users or a limitation of the opening angle alpha realizable. In this case, the device 3 , in particular the Verstellaktorik 19 , For example, signal technology with an existing vehicle sensors, such as laser scanner, top-view camera, etc., are connected, wherein in a detection of possible collision objects, the locking unit 8th from the release position into the clamping position can be transferred and thus a collision is prevented.

For example, the drive device 20 a motor shaft with a motor pinion, which about a rotation axis D rotate. The motor pinion meshes with the gear wheel 23 and / or is engaged with this. Will the Verstellaktorik 19 activated, turns the drive device 20 the motor pinion in the direction of rotation with respect to the axis of rotation D in a first direction of rotation and thus transmits a rotational movement to the gear 23 , The gear wheel 23 For example, rotatable by the screw 25 be stored. The gear wheel 23 thus rotates relative to the screw means 25 in the direction of rotation with respect to the locking axis A in one direction of rotation DR where the screw means 25 remains stationary. The rotational movement is directly on the second clamping plate 22 transferred so that the rolling elements 24 the course of the clamping ramp track 22a consequences. In particular, at a rotation of the gear 23 in a second direction of rotation which is opposite to the direction of rotation DR is, the guide and locking lamellae 14 . 15 as well as the spring device 16 relaxed, so the friction force RK or the spring force FK be reduced again and the release position is taken again.

The clamping ramp tracks 22a have a contour on which the rolling elements 24 at a rotation of the second clamping plate 22 opposite the first clamping plate 21 between the release position and the clamping position rolls. The contour changes from the release position to the clamping position such that during the rotation of the two clamping plates 21 . 22 against each other a distance FROM between the first and the second clamping plate 21 . 22 is changed. For example, the distance decreases FROM from the release position, 5a , in the clamping position, 5b , by a few millimeters, for example, about 2 mm. This will cause the spring device 16 with an additional compressive force in the axial direction with respect to the locking axis A acted upon, so that the spring force FK and the frictional force RK are increased in the multi-plate clutch.

Furthermore, the first clamping plate 21 a stop contour 21b on which in the scenery 22b the second clamping plate 22 is guided. In particular, the stop contour serves 21b in addition, a rotation of the second clamping plate 22 or of the gear wheel 23 to be limited to a range between the release position and the clamping position. For example, the stop contour 21 b formed as a nose and in one piece, for example from a common plastic injection molding, with the first clamping plate 21 connected. The stop contour 21b extends in the axial direction with respect to the locking axis A in the direction of the gear wheel 23 and is in circulation in the scenery 22b guided and limited by these. Thus, the drive device 20 be operated in a particular work area, which in turn reduces the regulatory burden.

The 6a and 6b show in a sectional view a detailed view of the two clamping plates with one of the rolling elements 24 , It shows the 6a the rolling element 24 in the release position and 6b the rolling element 24 in the clamping position. The clamping roller conveyor 22a is formed like a ramp, wherein the contour is formed rising from the release position to the clamping position, wherein the rolling elements 24 at a rotation of the second clamping plate 22 , the first clamping plate 21 from the second clamping plate 22 pushes away due to the defined force-displacement path, so that the axial distance FROM between the first and the second clamping plate 21 . 22 is enlarged.

The 7a, b show in the same representation as the 5a, b arresting 8th in the release position, 7a , and the clamping position, 7b , as an alternative embodiment of the invention. For this purpose, the Verstellaktorik 19 instead of the clamping plates 21 . 22 , the rolling element 24 and the gear wheel 23 an eccentric disc 27 on. The drive device 20 is arranged in this embodiment such that the axis of rotation D the locking axle A cuts at right angles. For example, the eccentric disc 27 via a shaft-hub connection with the motor shaft of the drive device 20 rotatably connected. The drive device 20 generates a rotational movement, this on the eccentric disc 27 is transmitted and this in one direction DR is twisted.

In particular, by the rotation of the eccentric disc 27 a linear movement on the two multi-plate clutch sections 13a . b in the axial direction with respect to the locking axis A transfer. For example, the eccentric disc 27 this rotated by 180 degrees. The eccentric disc 27 is formed as a circular disc, wherein the center of the eccentric disc 27 outside the axis of rotation D lies.

The eccentric disc 27 lies on the pressure plate 18 at, wherein at a rotation of the eccentric disc 27 in the direction of rotation DR the pressure plate 18 in the axial direction with respect to the locking axis A in the direction of the spring sleeve 17 is moved. As a result, the locking and the guide blades 14 . 15 as well as the spring device 16 compressed so that the friction force RK or the spring force FK , as in 7b shown, are increased and the locking unit 8th is in the clamping position.

At a rotation of the eccentric disc 27 in a second direction of rotation which is opposite to the direction of rotation DR is, the slats are 14 . 15 and the spring device 16 relaxed, so the friction force RK or the spring force FK be reduced again and the locking unit 8th is again in the release position.

For this purpose, the Verstellaktorik 19 a reset device 28 for returning the eccentric disc 27 in a starting position. For example, the reset device 28 formed as a return spring, wherein the return device 28 the eccentric disc 27 in the opposite direction to the direction of rotation DR subjected to a tensile force, so that the eccentric disc 27 is returned to the starting position in the second direction of rotation. Thus, the drive device 20 with only one direction of rotation, preferably in a certain work area, operable, which significantly reduces the control effort for control.

LIST OF REFERENCE NUMBERS

1

vehicle

2

vehicle door

3

contraption

4

vehicle body

5

first attachment section

6

second attachment section

7

Guide unit

8th

arresting

9

hinged device

10

extension organ

11

receiving portion

12

fixative

13a

first multi-plate clutch section (guide unit)

13b

second multi-plate coupling section (locking unit)

14

Arrangers

15

lock-

16

spring means

17

spring sleeve

18

printing plate

19

Verstellaktorik

20

driving means

21

first clamping plate

22

second clamping plate

22a

Clamping ramp lanes

22b

scenery

23

Pinion

24

rolling elements

25

screw

26

guide opening

27

eccentric

28

Reset device

alpha

opening angle

A

locking shaft

B

movement direction

AS

Arretierungsstrecke

D

axis of rotation

RK

friction force

FK

spring force

DR

direction of rotation

Claims (6)

Device (3) for steplessly locking a vehicle door (2), comprising a first fastening section (5) for attachment to a vehicle body (4), with a second fastening section (6) for fastening to the vehicle door (2), with a guide unit (7 ), wherein the guide unit (7) is connected to the first fastening portion (5), with a locking unit (8), wherein the locking unit (8) is connected to the second fastening portion (6), wherein the locking unit (8) by the guide unit (7) in a direction of movement (B) is guided, wherein the locking unit (8) relative to the guide unit (7) in the direction of movement (B) along a Arretierungsstrecke (AS) displaceable and in different positions along the Arretierungsstrecke (AS) can be locked , characterized in that the guide unit (7) has a first multi-plate clutch section (13a) and the locking unit (8) has a second multi-plate clutch wherein the first and the second multi-plate clutch portion (13a, 13b) together form a multi-plate clutch, wherein the multi-plate clutch (13) locks the locking unit (8) relative to the guide unit (7), wherein the device (3) a Verstellaktorik (19), wherein the Verstellaktorik (19) increases the frictional force (RK) of the multi-disc clutch (13), so that the locking unit (8) in the direction of movement (B) is blocked, wherein the Verstellaktorik (19) as a rotational linear Converter is formed and the Verstellaktorik (19) has a first and a second clamping plate (21, 22) and at least one rolling element (24), wherein the Wälzköper (24) between the two clamping plates (21, 22) in a clamping ramp track (22a Is arranged), wherein in a rotation of the two clamping plates (21, 22) against each other via the rolling elements (24) a distance between the two clamping plates (21, 22) is variable and a linear movement on the slats clutch (13) is transmitted so that the friction force (RK) of the multi-plate clutch (13) is adjustable. Device (3) according to Claim 1 characterized in that the first multi-plate clutch section (13a) comprises a plurality of guide plates (14) and the second multi-plate clutch section (13b) comprises a plurality of detent plates (15), the guide plates (14) in alternating sequence between the locking lamellae (15) are arranged, wherein the guide plates (14) and / or the locking lamellae (15) are designed as friction plates, so that a frictional engagement between the first and the second multi-plate clutch portion (13a, 13b) is formed. Device (3) according to Claim 2 , characterized in that the guide blades (14) extend in the direction of movement (B) longer than the Arretierungslamellen (15), wherein the Arretierungslamellen (15) along the guide blades (14) in the direction of movement (B) slide. Device (3) according to any one of the preceding claims, characterized in that the locking unit (8) has a spring device (16), wherein the spring device (16) acts on the multi-disc clutch (13) with a spring force (FK), so that the frictional force (RK ) of the multi-plate clutch (13) is increased. Device (3) according to Claim 4 , characterized in that the Verstellaktorik (19) for adjusting the spring force (FK) is formed, wherein at an increase in the spring force (FK), the friction force (RK) of the multi-plate clutch (13) is increased, so that the locking unit (8) in the Movement direction (B) is blocked. Device (3) according to Claim 1 , characterized in that the Verstellaktorik (19) has an eccentric disc (27), wherein by a rotation of the eccentric disc (27) a linear movement to the multi-disc clutch (13) is transferable, so that the friction force (RK) of the multi-disc clutch (13) is adjustable ,

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