EP3791038A1 - Drive device for a door - Google Patents

Drive device for a door

Info

Publication number
EP3791038A1
EP3791038A1 EP19755808.3A EP19755808A EP3791038A1 EP 3791038 A1 EP3791038 A1 EP 3791038A1 EP 19755808 A EP19755808 A EP 19755808A EP 3791038 A1 EP3791038 A1 EP 3791038A1
Authority
EP
European Patent Office
Prior art keywords
drive device
fact
electromagnet
friction
door
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19755808.3A
Other languages
German (de)
French (fr)
Other versions
EP3791038B1 (en
Inventor
Hans-Joachim Büscher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Witte Automotive GmbH
Original Assignee
Witte Automotive GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Witte Automotive GmbH filed Critical Witte Automotive GmbH
Publication of EP3791038A1 publication Critical patent/EP3791038A1/en
Application granted granted Critical
Publication of EP3791038B1 publication Critical patent/EP3791038B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/003—Braking devices, e.g. checks; Stops; Buffers for sliding wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
    • E05Y2201/23—Actuation thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
    • E05Y2201/252—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore characterised by type of friction
    • E05Y2201/26—Mechanical friction
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/46—Magnets
    • E05Y2201/462—Electromagnets
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2400/00—Electronic control; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/10—Electronic control
    • E05Y2400/45—Control modes
    • E05Y2400/452—Control modes for saving energy
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
    • E05Y2900/531—Doors

Definitions

  • the present invention relates to a drive device for a door, in particular a sliding door of a motor vehicle.
  • Such a drive device is known in principle, particularly in the automotive field.
  • a sliding door move automatically, that the sliding door stops in a partially open position when necessary, and that such a partially open position is held securely even when the vehicle is in a downward position.
  • Actuators required for this are only actuated in the event of a crash, which may take many afterwards Years of use of a vehicle, which is why 100% functional reliability cannot be guaranteed due to the aging of the system due to corrosion and contamination. Since the period of time during or after an accident in which the decoupling of a motor / transmission unit must take place before the vehicle battery is destroyed or deactivated by a battery protection circuit and then no voltage is available for activating the decoupling device, this type includes decoupling a certain functional risk.
  • the invention is therefore based on the object of providing a drive device for a door, in particular a sliding door of a motor vehicle, which fixes the door securely on a slope in a desired holding position and also in
  • a drive device with the features of claim 1 is provided to achieve the object.
  • the drive device according to the invention for a door in particular a sliding door of a motor vehicle, comprises an output element which can be rotated about an axis of rotation by a drive motor and an electromagnetic locking mechanism for fixing the output element.
  • the invention is based on the general idea that, instead of an electromagnetic clutch, an electromagnetic locking mechanism, that is to say a brake for blocking the output element and thus locking the door in a desired opening position, is integrated into the drive device.
  • an electromagnetic locking mechanism that is to say a brake for blocking the output element and thus locking the door in a desired opening position
  • the drive device according to the invention manages with a smaller number of components and is therefore more compact and less expensive to produce.
  • the drive element can be fixed in any opening position of the door so that the door cannot close automatically due to its own weight, even on a slope.
  • the locking mechanism Since the locking mechanism is activated only to hold the door in an open position and must be released to move the door, it follows in an advantageous manner that the locking mechanism also deactivates the door in a closed position in which the door is locked by a door lock - can stay fourth. This ensures that the brake is released when the door is closed and thus also in the event of a crash, and manual opening of the door is possible immediately and in particular without additional actuation, in particular deactivation, of the locking mechanism. Furthermore, when the door is automatically opened, the state of the locking mechanism does not have to be queried first, since the locking mechanism is always released anyway when the door is closed.
  • the fact that the drive device enables the door to be held in any open position means that the manufacturer of the vehicle can also save the current mechanical door hold-open systems.
  • the locking mechanism comprises a friction element which has a magnetic material and is mounted on the output element in a rotationally fixed but movable manner in the direction of the axis of rotation, a friction surface which is fixed relative to the friction element and an electromagnet through which the friction element engages with the friction surface can be brought to determine the output element.
  • Both the electromagnet and the output element possibly also the drive motor, can be accommodated in a common housing of the drive device.
  • the electromagnet is preferably installed in a stationary manner in the housing and the output element is rotatably mounted in the housing.
  • the electromagnet comprises a magnet coil and a magnet body.
  • the magnet coil is preferably embedded in the magnet body.
  • a compact design also contributes if the magnetic body itself forms the friction surface. In principle, however, it is also conceivable to provide the friction surface on an additional component which is connected to the magnet body and / or the magnet coil.
  • a simple structure of the drive device contributes if the output element is a gearwheel. Such a gear wheel can sit directly on an output shaft of the drive motor or a gear unit can be connected between the drive motor and the gear wheel.
  • the friction element is a friction plate mounted on the gearwheel in the direction of the axis of rotation.
  • the magnetic material of the friction element is advantageously magnetically soft, ie it has no or at most a low remanent property.
  • the material of the friction element can be a soft iron material.
  • a friction element made of a material is also conceivable, which is so magnetically hard that there is indeed a separation from the electromagnet or from the Friction surface allows, but still maintains a certain residual magnetism after separation.
  • the magnetic body preferably has a material with a pronounced
  • the magnetic body can have a ferromagnetic material, in particular a magnetically hard material, e.g. hardened carbon steel.
  • the magnetic body Due to its retentive property, the magnetic body remains magnetic even when the energization of the magnetic coil is switched off again. In other words, all that is required to activate the locking mechanism is to apply a current pulse to the magnetic coil.
  • the residual magnetism of the magnetic body is sufficient to exert a sufficient holding force on the friction plate for holding the door in position, so that the door is also held in position when de-energized. In this way, no further electricity is required when the door is open for a longer period of time and thus a battery of the vehicle is protected.
  • the holding force of the locking mechanism can be adapted to the door system in such a way that the opened door is held reliably in position, but can nevertheless be closed manually with a sufficiently high actuating force.
  • the magnetic body must be demagnetized to release the locking mechanism. This is preferably done by pulsing the magnetic coil alternately, preferably with a pulse duration that reduces from pulse to pulse.
  • the electromagnet is advantageously controlled by means of a control unit, which can be integrated in the drive device or can be arranged outside of the latter.
  • FIG. 1 shows a schematic illustration of a drive device according to the invention
  • FIG. 2A shows a current pulse for activating an electromagnetic locking mechanism of the drive device from FIG. 1;
  • Fig. 2B current pulses for deactivating the locking mechanism.
  • Fig. 1 shows a drive device for a sliding door, not shown, of a motor vehicle.
  • the drive device comprises an electric drive motor 14 which drives an output element 18 via a gear unit 16.
  • the output element 18 is a gear wheel which is rotatably mounted about an axis of rotation 20 and is coupled to the sliding door by means of a mechanism (not shown), so that rotation of the output element 18 in a first direction causes an opening movement of the sliding door and a locking movement. rotation of the output element 18 in a second direction opposite to the first direction causes a closing movement of the sliding door.
  • the drive device has an electromagnetic locking mechanism 22.
  • the locking mechanism 22 comprises, on the one hand, a friction element 24 which is mounted on the driven element 18 in a rotationally fixed but movable manner in the direction of the axis of rotation 20.
  • the friction element 24 is a friction plate, which forms bearing pins 26 on its side facing the output element 18, which are slidably received in corresponding bearing bores 28 of the output element 18.
  • the friction element 24 is shown in a passive position, in which it is at a minimal distance from the driven element 18, while the lower part of FIG. 1 shows the friction element 24 in an active position, in which it is at a maximum distance to the output element 18.
  • the displacement of the friction element 24 from the passive position into the active position takes place against the restoring force of a restoring spring, not shown.
  • the friction element 24 has a magnetically soft material with negligible or at most minimal remanent properties.
  • it can be made of a soft iron material.
  • the locking mechanism 22 comprises an electromagnet 30, which is installed in a stationary manner in a housing 32 of the drive device opposite the friction element 24.
  • the electromagnet 30 has a magnetic coil 34 which is embedded in a magnetic body 36.
  • the magnetic body 36 is formed from a ferromagnetic and magnetically particularly hard material, such as a hardened carbon steel, so that the magnetic body 36, unlike the friction element 24, has a pronounced remanent property.
  • the magnetic body 36 On its side facing the friction element 24, the magnetic body 36 forms a friction surface 38, with which the friction element 24 comes into engagement when it assumes its active position (lower part of FIG. 1).
  • the solenoid 34 is acted upon by a control unit (not shown) with a current pulse, as is shown by way of example in FIG. 2A.
  • the magnet body 36 By energizing the magnet coil 34, the magnet body 36 is magnetized and the friction element 24 is attracted accordingly, ie it is moved away from the output element 18 until it comes into contact with the friction surface 38 of the electromagnet 30.
  • the electromagnet 30 exerts a holding force on the output element 18, ie the output element 18 is blocked and further movement of the sliding door by the drive motor 14 is prevented. Due to the remanence of the magnet body 36, the holding force is still maintained even when the magnet coil 34 is de-energized again.
  • the holding force can be adapted to the door weight as well as the door kinematics, system friction and incline in such a way that the sliding door is reliably in an open position even on a slope can be held.
  • the solenoid 30 is acted upon by a series of alternating current pulses to release the locking mechanism 22, the duration of which decreases from pulse to pulse, as is shown by way of example in FIG. 2B.
  • the magnetic body 36 is demagnetized, so that the friction element 24 is returned to its passive position by the return spring and the output element 18 is released.

Abstract

The invention relates to a drive device for a door, in particular a sliding door of a motor vehicle, having an output element which can be rotated about an axis of rotation by means of a drive motor, and an electromagnetic fixing mechanism for fixing the output element.

Description

Antriebsvorrichtunq für eine Tür  Drive device for a door
Die vorliegende Erfindung betrifft eine Antriebsvorrichtung für eine Tür, insbeson- dere eine Schiebetür eines Kraftfahrzeugs. The present invention relates to a drive device for a door, in particular a sliding door of a motor vehicle.
Eine derartige Antriebsvorrichtung ist grundsätzlich bekannt, insbesondere im Au- tomobilbereich. Allgemein besteht seitens der Nutzer von Fahrzeugen mit Schie- betüren der Wunsch, dass eine Schiebetür automatisch verfährt, die Schiebetür bei Bedarf in einer teilgeöffneten Position anhält und eine solche teilgeöffnete Po- sition auch in einer Gefällelage des Fahrzeugs sicher gehalten wird. Dies gilt ins- besondere, wenn die Fahrzeuge zu Transportzwecken eingesetzt werden, zum Beispiel von Zulieferdiensten. Such a drive device is known in principle, particularly in the automotive field. In general, there is a desire on the part of users of vehicles with sliding doors that a sliding door move automatically, that the sliding door stops in a partially open position when necessary, and that such a partially open position is held securely even when the vehicle is in a downward position. This applies in particular if the vehicles are used for transport purposes, for example from supplier services.
Aktuell auf dem Markt verfügbare Schiebetürantriebssysteme, welche diese An- forderungen erfüllen, sind mit Antriebsvorrichtungen ausgestattet, welche die Hal- tefunktion mittels einer Motor/Getriebe-Einheit mit ausreichend großer Selbsthem- mung realisieren. Dies hat allerdings zur Folge, dass die Schiebetüren nur mit Be- tätigungskräften manuell betätigt werden können, die höher als die Haltekräfte der Antriebsvorrichtungen sind, welche nötig sind, um die Schiebetüren im Gefälle in Position zu halten. Da derart hohe Betätigungskräfte in einem Notfall, beispiels weise bei einem Unfall, das Öffnen der Schiebetür stark behindern und je nach Kraftpotenzial des Bedieners sogar verhindern, beispielsweise im Falle von Kin- dern oder älteren Personen, wurden die Antriebsvorrichtungen mit elektromecha- nischen Entkopplungseinrichtungen versehen, die im sogenannten Crashfall die hemmenden Motor/Getriebe-Einheiten entkoppeln. Hierfür benötigte Aktuatoren werden allerdings nur im Crashfall aktuiert, was unter Umständen erst nach vielen Jahren der Nutzung eines Fahrzeuge erfolgen kann, weshalb aufgrund der durch Korrosion und Verschmutzung bedingten Systemalterung keine 100-prozentige Funktionssicherheit gewährleistet werden kann. Da die Zeitspanne bei oder nach einem Unfall, in welcher die Entkopplung einer Motor/Getriebe-Einheit erfolgen muss, bevor die Fahrzeugbatterie zerstört oder durch eine Batterieschutzschal- tung deaktiviert wird und anschließend keine Spannung mehr zur Aktivierung der Entkopplungsvorrichtung zur Verfügung steht, beinhaltet diese Art der Entkopp- lung ein gewisses Funktionsrisiko. Sliding door drive systems currently available on the market that meet these requirements are equipped with drive devices that implement the holding function by means of a motor / gear unit with a sufficiently large self-locking. However, this has the consequence that the sliding doors can only be operated manually with actuation forces which are higher than the holding forces of the drive devices which are necessary to hold the sliding doors in position on a slope. Since such high actuation forces in an emergency, for example in an accident, severely hinder the opening of the sliding door and, depending on the power potential of the operator, even prevent it, for example in the case of children or the elderly, the drive devices were provided with electromechanical decoupling devices. which decouple the inhibiting motor / gearbox units in the event of a crash. Actuators required for this, however, are only actuated in the event of a crash, which may take many afterwards Years of use of a vehicle, which is why 100% functional reliability cannot be guaranteed due to the aging of the system due to corrosion and contamination. Since the period of time during or after an accident in which the decoupling of a motor / transmission unit must take place before the vehicle battery is destroyed or deactivated by a battery protection circuit and then no voltage is available for activating the decoupling device, this type includes decoupling a certain functional risk.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Antriebsvorrichtung für eine Tür, insbesondere eine Schiebetür eines Kraftfahrzeugs, zu schaffen, welche die Tür im Gefälle sicher in einer gewünschten Halteposition fixiert und auch im The invention is therefore based on the object of providing a drive device for a door, in particular a sliding door of a motor vehicle, which fixes the door securely on a slope in a desired holding position and also in
Crashfall eine manuelle Öffnung der Tür mit minimalen Kräften dauerhaft zuver- lässig sicherstellt. In the event of a crash, a manual opening of the door with minimal forces is guaranteed to be reliable in the long term.
Zur Lösung der Aufgabe ist eine Antriebsvorrichtung mit den Merkmalen des An- spruchs 1 vorgesehen. A drive device with the features of claim 1 is provided to achieve the object.
Die erfindungsgemäße Antriebsvorrichtung für eine Tür, insbesondere eine Schie- betür eines Kraftfahrzeugs, umfasst ein durch einen Antriebsmotor um eine Dreh- achse verdrehbares Abtriebselement und einen elektromagnetischen Feststellme- chanismus zum Feststellen des Abtriebselements. The drive device according to the invention for a door, in particular a sliding door of a motor vehicle, comprises an output element which can be rotated about an axis of rotation by a drive motor and an electromagnetic locking mechanism for fixing the output element.
Der Erfindung liegt mit anderen Worten der allgemeine Gedanke zugrunde, anstel- le einer elektromagnetischen Kupplung einen elektromagnetischen Feststellme- chanismus, gewissermaßen also eine Bremse zum Blockieren des Abtriebsele- ments und somit Feststellen der Tür in einer gewünschten Öffnungsposition in die Antriebsvorrichtung zu integrieren. Dies hat zum einen den Vorteil, dass die erfin- dungsgemäße Antriebsvorrichtung mit einer geringeren Anzahl von Bauteilen aus- kommt und somit kompakter und kostengünstiger herstellbar ist. Zum anderen kann das Abtriebselement in jeder beliebigen Öffnungsposition der Tür so fixiert werden, dass die Tür auch im Gefälle nicht selbstständig durch ihr Eigengewicht zufahren kann. In other words, the invention is based on the general idea that, instead of an electromagnetic clutch, an electromagnetic locking mechanism, that is to say a brake for blocking the output element and thus locking the door in a desired opening position, is integrated into the drive device. On the one hand, this has the advantage that the drive device according to the invention manages with a smaller number of components and is therefore more compact and less expensive to produce. On the other hand the drive element can be fixed in any opening position of the door so that the door cannot close automatically due to its own weight, even on a slope.
Da der Feststellmechanismus ausschließlich zum Halten der Tür in einer Öff- nungsposition aktiviert wird und zum Verfahren der Tür gelöst werden muss, folgt in vorteilhafterweise, dass der Feststellmechanismus auch in einer geschlossenen Position der Tür, in welcher die Tür durch ein Türschloss verriegelt wird, deakti- viert bleiben kann. Auf diese Weise ist gewährleistet, dass die Bremse bei ge- schlossener Tür und somit auch in einem Crashfall gelöst ist und eine manuelle Öffnung der Tür umgehend und insbesondere ohne zusätzliche Aktuierung, insbe- sondere Deaktivierung, des Feststellmechanismus möglich ist. Des Weiteren muss beim automatischen Öffnen einer geschlossenen Tür nicht erst der Zustand des Feststellmechanismus abgefragt werden, da der Feststellmechanismus im geschlossenen Zustand der Tür ohnehin stets gelöst ist. Since the locking mechanism is activated only to hold the door in an open position and must be released to move the door, it follows in an advantageous manner that the locking mechanism also deactivates the door in a closed position in which the door is locked by a door lock - can stay fourth. This ensures that the brake is released when the door is closed and thus also in the event of a crash, and manual opening of the door is possible immediately and in particular without additional actuation, in particular deactivation, of the locking mechanism. Furthermore, when the door is automatically opened, the state of the locking mechanism does not have to be queried first, since the locking mechanism is always released anyway when the door is closed.
Dadurch, dass die Antriebsvorrichtung ein Halten der Tür in jeder geöffneten Posi- tion ermöglicht, kann der Hersteller des Fahrzeugs außerdem aktuell übliche me- chanische Türoffenhaltesysteme einsparen. The fact that the drive device enables the door to be held in any open position means that the manufacturer of the vehicle can also save the current mechanical door hold-open systems.
Vorteilhafte Ausbildungen der Erfindung sind den Unteransprüchen, der Beschrei- bung und der Zeichnung zu entnehmen. Advantageous embodiments of the invention can be found in the subclaims, the description and the drawing.
Gemäß einer Ausführungsform umfasst der Feststellmechanismus ein ein magne- tisches Material aufweisendes Reibelement, welches drehfest, aber in Richtung der Drehachse beweglich an dem Abtriebselement gelagert ist, eine relativ zu dem Reibelement feststehende Reibfläche und einen Elektromagneten, durch welchen das Reibelement mit der Reibfläche in Eingriff bringbar ist, um das Abtriebsele- ment festzustellen. Sowohl der Elektromagnet als auch das Abtriebselement, gegebenenfalls auch der Antriebsmotor, können in einem gemeinsamen Gehäuse der Antriebsvorrich- tung untergebracht sein. Dabei ist der Elektromagnet vorzugsweise ortsfest in dem Gehäuse verbaut und das Abtriebselement drehbar in diesem gelagert. According to one embodiment, the locking mechanism comprises a friction element which has a magnetic material and is mounted on the output element in a rotationally fixed but movable manner in the direction of the axis of rotation, a friction surface which is fixed relative to the friction element and an electromagnet through which the friction element engages with the friction surface can be brought to determine the output element. Both the electromagnet and the output element, possibly also the drive motor, can be accommodated in a common housing of the drive device. The electromagnet is preferably installed in a stationary manner in the housing and the output element is rotatably mounted in the housing.
Gemäß einer weiteren Ausführungsform umfasst der Elektromagnet eine Magnet- spule und einen Magnetkörper. Für eine besonders kompakte Bauform ist die Magnetspule bevorzugt in den Magnetkörper eingebettet. Zu einer kompakten Bauform trägt außerdem bei, wenn der Magnetkörper selbst die Reibfläche ausbildet. Grundsätzlich ist es aber auch vorstellbar, die Reibfläche an einem zusätzlichen Bauteil vorzusehen, welches mit dem Magnetkörper und/oder der Magnetspule verbunden ist. Zu einem einfachen Aufbau der Antriebsvorrichtung trägt bei, wenn es sich bei dem Abtriebselement um ein Zahnrad handelt. Ein solches Zahnrad kann direkt auf einer Ausgangswelle des Antriebsmotors sitzen oder es kann eine Getriebe- einheit zwischen den Antriebsmotor und das Zahnrad geschaltet sein. Gemäß einer weiteren Ausführungsform ist das Reibelement eine in Richtung der Drehachse verschiebbar an dem Zahnrad gelagerte Reibplatte. According to a further embodiment, the electromagnet comprises a magnet coil and a magnet body. For a particularly compact design, the magnet coil is preferably embedded in the magnet body. A compact design also contributes if the magnetic body itself forms the friction surface. In principle, however, it is also conceivable to provide the friction surface on an additional component which is connected to the magnet body and / or the magnet coil. A simple structure of the drive device contributes if the output element is a gearwheel. Such a gear wheel can sit directly on an output shaft of the drive motor or a gear unit can be connected between the drive motor and the gear wheel. According to a further embodiment, the friction element is a friction plate mounted on the gearwheel in the direction of the axis of rotation.
Damit das Reibelement durch das Zusammenwirken mit dem Elektromagneten nicht dauerhaft magnetisiert wird, ist das magnetische Material des Reibelements vorteilhafterweise magnetisch weich, d.h. es weist keine oder allenfalls eine gerin- ge Remanenzeigenschaft auf. Beispielsweise kann es sich bei dem Material des Reibelements um einen Weicheisen-Werkstoff handeln. Grundsätzlich ist aber auch ein Reibelement aus einem Material denkbar, welches derart magnetisch hart ist, dass es zwar eine Trennung von dem Elektromagneten bzw. von der Reibfläche ermöglicht, nach der Trennung aber trotzdem einen gewissen Rest- magnetismus beibehält. So that the friction element is not permanently magnetized by the interaction with the electromagnet, the magnetic material of the friction element is advantageously magnetically soft, ie it has no or at most a low remanent property. For example, the material of the friction element can be a soft iron material. In principle, however, a friction element made of a material is also conceivable, which is so magnetically hard that there is indeed a separation from the electromagnet or from the Friction surface allows, but still maintains a certain residual magnetism after separation.
Dagegen weist der Magnetkörper bevorzugt ein Material mit ausgeprägter In contrast, the magnetic body preferably has a material with a pronounced
Remanenzeigenschaft auf. Beispielsweise kann der Magnetkörper ein ferromag- netisches Material, insbesondere ein magnetisch hartes Material, aufweisen, z.B. gehärteten Kohlenstoffstahl. Retentive property on. For example, the magnetic body can have a ferromagnetic material, in particular a magnetically hard material, e.g. hardened carbon steel.
Durch seine Remanenzeigenschaft bleibt der Magnetkörper auch dann magne- tisch, wenn die Bestromung der Magnetspule wieder ausgeschaltet wird. Mit ande- ren Worten ist zur Aktivierung des Feststellmechanismus lediglich eine Beauf- schlagung der Magnetspule mit einem Strompuls erforderlich. Der Restmagnetis- mus des Magnetkörpers reicht aus, um eine für das Halten der Tür in Position aus- reichende Haltekraft auf die Reibplatte auszuüben, sodass die Tür auch stromlos in Position gehalten wird. Auf diese Weise wird bei über einen längeren Zeitraum geöffneter Tür kein weiterer Strom benötigt und somit eine Batterie des Fahrzeugs geschont. Due to its retentive property, the magnetic body remains magnetic even when the energization of the magnetic coil is switched off again. In other words, all that is required to activate the locking mechanism is to apply a current pulse to the magnetic coil. The residual magnetism of the magnetic body is sufficient to exert a sufficient holding force on the friction plate for holding the door in position, so that the door is also held in position when de-energized. In this way, no further electricity is required when the door is open for a longer period of time and thus a battery of the vehicle is protected.
Durch eine geeignete Auswahl und/oder Vergütung des Remanenzwerkstoffes des Magnetkörpers kann die Haltekraft des Feststellmechanismus derart an das Türsystem angepasst werden, dass die geöffnete Tür zuverlässig in Position ge- halten wird, mit einer ausreichend hohen Betätigungskraft aber trotzdem manuell geschlossen werden kann. By a suitable selection and / or remuneration of the remanent material of the magnetic body, the holding force of the locking mechanism can be adapted to the door system in such a way that the opened door is held reliably in position, but can nevertheless be closed manually with a sufficiently high actuating force.
Wenn die Tür aus ihrer geöffneten Position verfahren werden soll, sei es manuell oder elektrisch, so muss der Magnetkörper zur Lösung des Feststellmechanismus entmagnetisiert werden. Dies geschieht vorzugsweise indem die Magnetspule ge- pulst alternierend bestromt wird, bevorzugt mit sich von Puls zu Puls reduzieren- der Pulsdauer. Die Ansteuerung des Elektromagneten erfolgt vorteilhafterweise mittels einer Steuereinheit, welche in die Antriebsvorrichtung integriert oder außerhalb von die- ser angeordnet sein kann. If the door is to be moved from its open position, be it manually or electrically, the magnetic body must be demagnetized to release the locking mechanism. This is preferably done by pulsing the magnetic coil alternately, preferably with a pulse duration that reduces from pulse to pulse. The electromagnet is advantageously controlled by means of a control unit, which can be integrated in the drive device or can be arranged outside of the latter.
Nachfolgend wird die Erfindung rein beispielhaft anhand einer möglichen Ausfüh- rungsform unter Bezugnahme auf die beigefügte Zeichnung beschrieben. Es zei- gen: The invention is described below purely by way of example using a possible embodiment with reference to the attached drawing. Show it:
Fig. 1 eine schematische Darstellung einer erfindungsgemäßen Antriebs- vorrichtung; 1 shows a schematic illustration of a drive device according to the invention;
Fig. 2A einen Strompuls zur Aktivierung eines elektromagnetischen Fest- stellmechanismus der Antriebsvorrichtung von Fig. 1 ; 2A shows a current pulse for activating an electromagnetic locking mechanism of the drive device from FIG. 1;
Fig. 2B Strompulse zur Deaktivierung des Feststellmechanismus. Fig. 2B current pulses for deactivating the locking mechanism.
Fig. 1 zeigt eine Antriebsvorrichtung für eine nicht dargestellte Schiebetür eines Kraftfahrzeugs. Die Antriebsvorrichtung umfasst einen elektrischen Antriebsmotor 14, der über eine Getriebeeinheit 16 ein Abtriebselement 18 antreibt. Fig. 1 shows a drive device for a sliding door, not shown, of a motor vehicle. The drive device comprises an electric drive motor 14 which drives an output element 18 via a gear unit 16.
Bei dem Abtriebselement 18 handelt es sich um ein Zahnrad, welches um eine Drehachse 20 drehbar gelagert ist und mittels einer nicht dargestellten Mechanik mit der Schiebetür gekoppelt ist, so dass eine Verdrehung des Abtriebselements 18 in einer ersten Richtung eine Öffnungsbewegung der Schiebetür und eine Ver- drehung des Abtriebselements 18 in einer zu der ersten Richtung entgegengesetz- ten zweiten Richtung eine Schließbewegung der Schiebetür bewirkt. The output element 18 is a gear wheel which is rotatably mounted about an axis of rotation 20 and is coupled to the sliding door by means of a mechanism (not shown), so that rotation of the output element 18 in a first direction causes an opening movement of the sliding door and a locking movement. rotation of the output element 18 in a second direction opposite to the first direction causes a closing movement of the sliding door.
Um die Schiebetür auch bei geneigtem Kraftfahrzeug in einer gewünschten Öff- nungsposition zu halten, verfügt die Antriebsvorrichtung über einen elektromagne- tischen Feststellmechanismus 22. Der Feststellmechanismus 22 umfasst zum einen ein Reibelement 24, welches drehfest, aber in Richtung der Drehachse 20 beweglich an dem Abtriebselement 18 gelagert ist. Konkret handelt es sich bei dem Reibelement 24 um eine Reibplat- te, welche an ihrer dem Abtriebselement 18 zugewandten Seite Lagerzapfen 26 ausbildet, die verschiebbar in entsprechenden Lagerbohrungen 28 des Abtrieb- selements 18 aufgenommen sind. Im oberen Teil der Fig. 1 ist das Reibelement 24 in einer Passivlage dargestellt, in welcher es einen minimalen Abstand zu dem Abtriebselement 18 aufweist, während der untere Teil der Fig. 1 das Reibelement 24 in einer Aktivlage zeigt, in welcher es einen maximalen Abstand zu dem Ab- triebselement 18 einnimmt. Die Verlagerung des Reibelements 24 aus der Passiv- lage in die Aktivlage erfolgt entgegen der Rückstellkraft einer nicht dargestellten Rückstellfeder. Das Reibelement 24 weist ein magnetisch weiches Material mit vernachlässigbarer oder allenfalls minimaler Remanenzeigenschaft auf. Bei- spielsweise kann es aus einem Weicheisen-Werkstoff gebildet sein. In order to keep the sliding door in a desired opening position even when the motor vehicle is tilted, the drive device has an electromagnetic locking mechanism 22. The locking mechanism 22 comprises, on the one hand, a friction element 24 which is mounted on the driven element 18 in a rotationally fixed but movable manner in the direction of the axis of rotation 20. Specifically, the friction element 24 is a friction plate, which forms bearing pins 26 on its side facing the output element 18, which are slidably received in corresponding bearing bores 28 of the output element 18. In the upper part of FIG. 1, the friction element 24 is shown in a passive position, in which it is at a minimal distance from the driven element 18, while the lower part of FIG. 1 shows the friction element 24 in an active position, in which it is at a maximum distance to the output element 18. The displacement of the friction element 24 from the passive position into the active position takes place against the restoring force of a restoring spring, not shown. The friction element 24 has a magnetically soft material with negligible or at most minimal remanent properties. For example, it can be made of a soft iron material.
Des Weiteren umfasst der Feststellmechanismus 22 einen Elektromagneten 30, welcher in einem Gehäuse 32 der Antriebsvorrichtung dem Reibelement 24 ge- genüberliegend ortsfest verbaut ist. Furthermore, the locking mechanism 22 comprises an electromagnet 30, which is installed in a stationary manner in a housing 32 of the drive device opposite the friction element 24.
Der Elektromagnet 30 weist eine Magnetspule 34 auf, die in einen Magnetkörper 36 eingebettet ist. Der Magnetkörper 36 ist aus einem ferromagnetischen und magnetisch besonders harten Material gebildet, wie zum Beispiel aus einem ge- härteten Kohlenstoffstahl, damit der Magnetkörper 36 anders als das Reibelement 24 über eine ausgeprägte Remanenzeigenschaft verfügt. The electromagnet 30 has a magnetic coil 34 which is embedded in a magnetic body 36. The magnetic body 36 is formed from a ferromagnetic and magnetically particularly hard material, such as a hardened carbon steel, so that the magnetic body 36, unlike the friction element 24, has a pronounced remanent property.
An seiner dem Reibelement 24 zugewandten Seite bildet der Magnetkörper 36 eine Reibfläche 38 aus, mit welcher das Reibelement 24 in Eingriff gerät, wenn es seine Aktivlage einnimmt (unterer Teil von Fig. 1 ). Um das Reibelement 24 aus seiner Passivlage in die Aktivlage zu bringen, wird die Magnetspule 34 durch eine nicht dargestellte Steuereinheit mit einem Strom- puls beaufschlagt, wie er in Fig. 2A beispielhaft dargestellt ist. Durch die Bestro- mung der Magnetspule 34 wird der Magnetkörper 36 magnetisiert und das Reibe- lement 24 entsprechend angezogen, d.h. von dem Abtriebselement 18 weg verla- gert, bis es mit der Reibfläche 38 des Elektromagneten 30 in Kontakt gerät. Durch die resultierende Haftreibung zwischen der Reibfläche 38 und dem Reibelement 24 übt der Elektromagnet 30 eine Haltekraft auf das Abtriebselement 18 aus, d.h. das Abtriebselement 18 wird blockiert und eine weitere Bewegung der Schiebetür durch den Antriebsmotor 14 verhindert. Aufgrund der Remanenz des Magnetkör- pers 36 wird die Haltekraft auch dann noch aufrechterhalten, wenn die Magnet- spule 34 wieder stromlos ist. Durch eine geeignete Auswahl der Materialien für den Magnetkörper 36 und das Reibelement 24 beziehungsweise Vergütung von Magnetkörper 36 und Reibelement 24 kann die Haltekraft so an das Türgewicht sowie die Türkinematik, Systemreibung und Steigung angepasst werden, dass die Schiebetür auch im Gefälle zuverlässig in einer offenen Position gehalten werden kann. On its side facing the friction element 24, the magnetic body 36 forms a friction surface 38, with which the friction element 24 comes into engagement when it assumes its active position (lower part of FIG. 1). In order to bring the friction element 24 from its passive position into the active position, the solenoid 34 is acted upon by a control unit (not shown) with a current pulse, as is shown by way of example in FIG. 2A. By energizing the magnet coil 34, the magnet body 36 is magnetized and the friction element 24 is attracted accordingly, ie it is moved away from the output element 18 until it comes into contact with the friction surface 38 of the electromagnet 30. Due to the resulting static friction between the friction surface 38 and the friction element 24, the electromagnet 30 exerts a holding force on the output element 18, ie the output element 18 is blocked and further movement of the sliding door by the drive motor 14 is prevented. Due to the remanence of the magnet body 36, the holding force is still maintained even when the magnet coil 34 is de-energized again. Through a suitable selection of the materials for the magnetic body 36 and the friction element 24 or the tempering of the magnetic body 36 and the friction element 24, the holding force can be adapted to the door weight as well as the door kinematics, system friction and incline in such a way that the sliding door is reliably in an open position even on a slope can be held.
Soll die Schiebetür anschließend wieder verfahren werden, wird der Elektromag- net 30 zur Lösung des Feststellmechanismus 22 mit einer Reihe von alternieren- den Strompulsen beaufschlagt, deren Dauer von Puls zu Puls abnimmt, wie es in Fig. 2B beispielhaft dargestellt ist. Hierdurch wird der Magnetkörper 36 entmagne- tisiert, sodass das Reibelement 24 durch die Rückstellfeder wieder in seine Pas- sivlage zurückversetzt und das Abtriebselement 18 freigegeben wird. If the sliding door is then to be moved again, the solenoid 30 is acted upon by a series of alternating current pulses to release the locking mechanism 22, the duration of which decreases from pulse to pulse, as is shown by way of example in FIG. 2B. As a result, the magnetic body 36 is demagnetized, so that the friction element 24 is returned to its passive position by the return spring and the output element 18 is released.
Eine automatische Bewegung der Schiebetür durch den Antriebsmotor 14 ist also lediglich bei deaktiviertem bzw. gelöstem Feststellmechanismus 22 möglich, wodurch sichergestellt ist, dass der Feststellmechanismus 22 jedenfalls gelöst ist, wenn die Schiebetür ihre Schließposition einnimmt und durch ein Türschloss ver- riegelt ist. Abschließend sei bemerkt, dass die bei aktiviertem Feststellmechanismus 22 durch den Elektromagneten 30 auf das Abtriebselement 18 ausgeübte Haltekraft zwar so gewählt ist, dass die Schiebetür auch im Gefälle zuverlässig in einer offe- nen Position gehalten wird, dass es einem Fahrzeugnutzer aber dennoch möglich ist, die Haltekraft manuell zu überwinden und die Schiebetür manuell zu verfahren, beispielsweise manuell zu schließen. An automatic movement of the sliding door by the drive motor 14 is therefore only possible when the locking mechanism 22 is deactivated or released, which ensures that the locking mechanism 22 is in any case released when the sliding door assumes its closed position and is locked by a door lock. In conclusion, it should be noted that the holding force exerted on the output element 18 by the electromagnet 30 when the locking mechanism 22 is activated is selected such that the sliding door is reliably held in an open position even on a slope, but that it is still possible for a vehicle user, to overcome the holding force manually and to move the sliding door manually, for example to close it manually.
Bezuqszeichenliste LIST OF REFERENCES
14 Antriebsmotor 16 Getriebeeinheit 18 Abtriebselement14 drive motor 16 gear unit 18 output element
20 Drehachse 20 axis of rotation
22 Feststellmechanismus 24 Reibelement 22 locking mechanism 24 friction element
26 Lagerzapfen 26 journals
28 Lagerbohrung 28 bearing bore
30 Elektromagnet 32 Gehäuse  30 electromagnet 32 housing
34 Magnetspule 34 solenoid
36 Magnetkörper 38 Reibfläche 36 magnetic body 38 friction surface

Claims

Patentansprüche claims
1. Antriebsvorrichtung für eine Tür, insbesondere eine Schiebetür eines Kraft- fahrzeugs, mit einem durch einen Antriebsmotor (14) um eine Drehachse verdrehbaren Abtriebselement (18) und einem elektromagnetischen Fest- stellmechanismus (22) zum Feststellen des Abtriebselements (18). 1. Drive device for a door, in particular a sliding door of a motor vehicle, with an output element (18) which can be rotated about an axis of rotation by a drive motor (14) and an electromagnetic locking mechanism (22) for locking the output element (18).
2. Antriebsvorrichtung nach Anspruch 1, 2. Drive device according to claim 1,
dadurch g e k e n n z e i c h n e t , dass  because of the fact that
der Feststellmechanismus (22) ein ein magnetisches Material aufweisendes Reibelement (24), welches drehfest, aber in Richtung der Drehachse (20) beweglich an dem Abtriebselement (18) gelagert ist, eine relativ zu dem Reibelement (24) feststehenden Reibfläche (38), und einen Elektromagne- ten (30) umfasst, durch welchen das Reibelement (24) mit der Reibfläche (38) in Eingriff bringbar ist, um das Abtriebselement (18) festzustellen.  the locking mechanism (22) has a friction element (24) which has a magnetic material and is mounted on the driven element (18) in a rotationally fixed but movable manner in the direction of the axis of rotation (20), a friction surface (38) which is fixed relative to the friction element (24), and an electromagnet (30), by means of which the friction element (24) can be brought into engagement with the friction surface (38) in order to ascertain the output element (18).
3. Antriebsvorrichtung nach Anspruch 2, 3. Drive device according to claim 2,
g e k e n n z e i c h n e t durch  marked by
ein Gehäuse (32), in welchem der Elektromagnet (30) ortsfest verbaut und das Abtriebselement (18) drehbar gelagert ist.  a housing (32) in which the electromagnet (30) is installed in a fixed position and the driven element (18) is rotatably mounted.
4. Antriebsvorrichtung nach Anspruch 2 oder 3, 4. Drive device according to claim 2 or 3,
dadurch g e k e n n z e i c h n e t , dass  because of the fact that
der Elektromagnet (30) eine Magnetspule (34) und einen Magnetkörper (36) umfasst. the electromagnet (30) comprises a magnetic coil (34) and a magnetic body (36).
5. Antriebsvorrichtung nach Anspruch 4, 5. Drive device according to claim 4,
dadurch g e k e n n z e i c h n e t , dass  because of the fact that
die Magnetspule (34) in den Magnetkörper (36) eingebettet ist.  the magnetic coil (34) is embedded in the magnetic body (36).
6. Antriebsvorrichtung nach Anspruch 3 oder 4, 6. Drive device according to claim 3 or 4,
dadurch g e k e n n z e i c h n e t , dass  because of the fact that
der Magnetkörper (36) die Reibfläche (38) ausbildet.  the magnetic body (36) forms the friction surface (38).
7. Antriebsvorrichtung nach zumindest einem der vorstehenden Ansprüche, dadurch g e k e n n z e i c h n e t , dass 7. Drive device according to at least one of the preceding claims, characterized g e k e n n z e i c h n e t that
das Abtriebselement (18) ein Zahnrad ist.  the output element (18) is a gear.
8. Antriebsvorrichtung nach zumindest einem der Ansprüche 2 bis 7, 8. Drive device according to at least one of claims 2 to 7,
dadurch g e k e n n z e i c h n e t , dass  because of the fact that
das Reibelement (24) eine in Richtung der Drehachse (20) verschiebbar an dem Abtriebselement (18) gelagerte Reibplatte ist.  the friction element (24) is a friction plate mounted on the output element (18) and is displaceable in the direction of the axis of rotation (20).
9. Antriebsvorrichtung nach zumindest einem Ansprüche 2 bis 8, 9. Drive device according to at least one of claims 2 to 8,
dadurch g e k e n n z e i c h n e t , dass  because of the fact that
das Material des Reibelements (24) magnetisch weich ist und/oder ein Weicheisen-Werkstoff ist.  the material of the friction element (24) is magnetically soft and / or is a soft iron material.
10. Antriebsvorrichtung nach zumindest einem der Ansprüche 4 bis 9, 10. Drive device according to at least one of claims 4 to 9,
dadurch g e k e n n z e i c h n e t , dass  because of the fact that
der Magnetkörper (36) ein Material mit Remanenzeigenschaften aufweist.  the magnetic body (36) has a material with retentive properties.
11. Antriebsvorrichtung nach zumindest einem der Ansprüche 4 bis 10 11. Drive device according to at least one of claims 4 to 10
dadurch g e k e n n z e i c h n e t , dass der Magnetkörper (36) ein ferromagnetisches Material, insbesondere ein magnetisch hartes Material, aufweist, z.B. gehärteten Kohlenstoffstahl. characterized in that the magnetic body (36) has a ferromagnetic material, in particular a magnetically hard material, for example hardened carbon steel.
12. Antriebsvorrichtung nach zumindest einem der Ansprüche 4 bis 11 , 12. Drive device according to at least one of claims 4 to 11,
dadurch g e k e n n z e i c h n e t , dass  because of the fact that
die Aktivierung des Elektromagneten (30) durch eine pulsförmige Bestro- mung der Magnetspule (34) erfolgt.  the electromagnet (30) is activated by pulsing the solenoid (34).
13. Antriebsvorrichtung nach zumindest einem der Ansprüche 4 bis 12, 13. Drive device according to at least one of claims 4 to 12,
dadurch g e k e n n z e i c h n e t , dass  because of the fact that
die Deaktivierung des Elektromagneten (30) durch eine gepulste alternie- rende Bestromung der Magnetspule (34) erfolgt, insbesondere mit von Puls zu Puls abnehmender Pulsdauer.  the electromagnet (30) is deactivated by pulsed alternating energization of the magnet coil (34), in particular with a pulse duration that decreases from pulse to pulse.
14. Antriebsvorrichtung nach zumindest einem der Ansprüche 2 bis 13, 14. Drive device according to at least one of claims 2 to 13,
g e k e n n z e i c h n e t durch  marked by
eine Steuereinheit zur Steuerung des Elektromagneten (30).  a control unit for controlling the electromagnet (30).
EP19755808.3A 2018-07-13 2019-07-10 Drive device for a door Active EP3791038B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018117017.3A DE102018117017A1 (en) 2018-07-13 2018-07-13 Drive device for a door
PCT/EP2019/068620 WO2020011891A1 (en) 2018-07-13 2019-07-10 Drive device for a door

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EP3791038A1 true EP3791038A1 (en) 2021-03-17
EP3791038B1 EP3791038B1 (en) 2023-10-25

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WO (1) WO2020011891A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102022102779A1 (en) 2022-02-07 2023-08-10 Kiekert Aktiengesellschaft Device for acting on a motor vehicle actuating element such as a motor vehicle door and associated method for operating such a device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508390U (en) *
DE3205980C2 (en) * 1982-02-19 1985-10-03 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Electromagnetic holding brake
DE102005044579A1 (en) * 2004-10-28 2006-05-04 Stabilus Gmbh Drive for pivoting a arranged on a body of a vehicle flap about a pivot axis
DE102012024376A1 (en) * 2012-12-13 2014-06-18 Kiekert Aktiengesellschaft Motor vehicle door
DE102015011444A1 (en) * 2015-09-07 2017-03-09 Hans-Joachim Büscher Door control device for a vehicle sliding door with electromagnetic clutch
DE102015221067A1 (en) * 2015-10-28 2017-05-04 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg Drive device for adjusting a vehicle part with a magnetic braking device
DE102016015409A1 (en) * 2016-12-22 2018-06-28 Kiekert Ag Motor vehicle door with locking device

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