Electric actuator

Abstract

The invention relates to an electric actuator for opening and closing a supply door, comprising an electric motor (6), a drivetrain (20) and an output interface (63), wherein the drivetrain (20) is coupled to the motor (6) and the output interface (63) such that driving the motor (6) drives the output interface (63), e.g. for opening and closing a coupled supply door, and wherein the drivetrain (20) is arranged such that it is backdrivable via driving the output interface (63), wherein the drivetrain (20) comprises at least one input axis (11) connected to the motor (6), and further comprises at least a first output axis (61), connected to and driving the output interface (63), and a second output axis (31), connected to and driving a locking means (33) between at least one engagement position and at least one disengagement position, wherein the locking means (33) is arranged for locking the drivetrain's backdrivability in the at least one engagement position, and for unlocking the drivetrain's backdrivability in at least one disengagement position.

Description

[0001] Title: ELECTRIC ACTUATOR Description The present application generally relates to an electric actuator for opening and closing a supply door, such as a charge port door or a fuel lid of a vehicle, comprising an electric motor, a drivetrain, and an output interface. The drivetrain is coupled to the motor and the output interface such that driving the motor drives, optionally rotates the output interface, e.g. for opening and closing a coupled supply door. The drivetrain is arranged such that it is backdrivable via driving, optionally rotating the output interface. The actuator might also be used for moving and locking any other movable part especially in the domain of vehicles, etc. Related domains include arrangement or mounting of auxiliary drives for vehicles, instrumentation or dashboards for vehicles, arrangements in connection with cooling, air intake, gas exhaust or fuel supply of propulsion units in vehicles, devices for moving wings into open or closed position, checks for wings, wing fittings, concerned with the functioning of the wing and gearing. This application addresses the problem of securing a supply door, especially of a charge port of an electric vehicle, in a non-charging state, or a lid of a fuel port in a certain locking position. Doors for charge ports of electric cars need to be blocked in the non- charging state, i.e., when the door covers the charge port, for security reasons. The door is normally driven electrically via an electric motor. The invention deals with the problem of doors being provided with a back drivable gearing, which means that the door can be opened by an external force, e.g., manually pulling the door. Such back drivable gearings are advantageous as they do not need a security clutch. However, there is a need to provide a secure locking mechanism to secure and block the opening of the door, especially in the non-charging state but also in other states if applicable. The application provides solutions for effectively locking such doors or lids, especially by locking the turnability of at least one output axis, and especially of a driven gear of an electric actuator using a locking element and a counter locking element, ensuring the door remains closed and preventing any unwanted movement. Embodiments of the invention are associated with various advantages and / or technical effects. Within this application, the door is a synonym for any kind of element driven by the actuator between at least one first position where the element is unlocked and at least one second position where the element is locked or secured, respectively. This first position might be referred to as the door opened position or a movable position, respectively, and the second position might be referred to as a door closed position or a locking position, respectively. Multiple of the before defined “movable positions” and “locking positions” can be provided in the actuator, wherein optionally in at least two, preferably in each of these multiple positions the disclosure herein applies. In detail, the actuator might comprise two or more locking positions and / or moveable positions. The invention provides an electric actuator, especially for opening and closing a supply door, e.g. a charge port door or a fuel lid, of a vehicle, comprising an electric motor, a drivetrain and an output interface, wherein the drivetrain is coupled to the motor and the output interface such that driving the motor drives, optionally rotates the output interface, e.g. for opening and closing a coupled supply door, and wherein the drivetrain is arranged such that it is backdrivable via driving, optionally rotating the output interface, wherein the drivetrain comprises at least one input axis connected to the motor, wherein the drivetrain further comprises at least a first output axis, connected to and driving the output interface, and a second output axis, connected to and driving a locking means between at least one engagement position and at least one disengagement position, wherein the locking means is arranged for locking the drivetrain’s backdrivability in the at least one engagement position, and for unlocking the drivetrain’s backdrivability in at least one disengagement position. It optionally holds that the “door” and especially the “supply door”, within this disclosure, might refer to any part to be moved by the actuator, e.g. a charge door, a fuel lid, a flap etc. Within this disclosure the following definitions of movement and positions are used: Locking position: A position in which a supply door or any other movable part to be moved by the actuator, optionally the output interface, is locked and secured, preventing any unwanted movement. This typically refers to a door being in a closed position, covering a charge port or fuel lid. Movable position: A position in which a supply door or any other movable part to be moved by the actuator, optionally the output interface, is unlocked and can be moved freely. This typically refers to a door being in an open position, allowing access to a charge port or fuel lid. Alignment position: A position in which a supply door or any other movable part to be moved by the actuator is unlocked and can be moved freely, and in which locking means are aligned short before being secured and locked, respectively, especially where a locking element and a counter locking element, both being part of the locking means, are aligned relative to each other and short before engaging, thereby locking the movability of the first output axis, especially of the output interface, and further especially turnability of a driven gear, and especially preventing backdrivability of the drivetrain. Engagement position: The position in which the locking means is locking the drivetrain’s backdrivability, especially where a locking element and a counter locking element, both being part of the locking means, are engaged, thereby optionally locking the movability of the first output axis, especially of the output interface, and further especially turnability of a driven gear, and especially preventing backdrivability of the drivetrain. Disengagement position: The position in which the locking means is not locking the drivetrain’s backdrivability, especially where a locking element and a counter locking element, both being part of the locking means, are disengaged, thereby optionally unlocking the movability of the first output axis, especially of the output interface, and further especially allowing turnability of a driven gear, and especially allowing backdrivability of the drivetrain. Door closed position: A specific locking position where a door, e.g. a supply door or any other movable part to be moved by the actuator is locked, and especially closed and locked. According to the invention multiple closed positions can be provided. Door open position: A specific movable position where the door, e.g. a supply door or any other movable part to be moved by the actuator is movable, and especially open and unlocked. According to the invention multiple open positions can be provided. Door closing direction: The direction in which the first output axis and especially the output interface, and further especially a driven gear or a door, e.g. a supply door, moves to transition from an open (movable) position to a closed (locking) position. Door opening direction: The direction in which the first output axis and especially the output interface, and further especially a driven gear or a door, e.g. a supply door, moves to transition from a closed (locking) position to an open (movable) position. Securing direction: Another term for the door closing direction, emphasizing the action of securing and locking the door in place. Backdrivable: Refers to the capability of the drivetrain to be driven in reverse by an external force applied to the output interface, such as manually pulling the door open. The external force might be a force not applied by the motor but by a different power source, e.g. by a force or momentum acting on the door or parts coupled with the door, e.g. the output interface, originating from outside of the actuator and more optionally for outside of the vehicle. In general and especially dependent on the arrangement of the actuator, especially the input axis, the drivetrain and the first and second output axis, it might hold that driving a specific element might comprise a translational and / or rotational movement. If e.g. the first output axis comprises a driven wheel, driving this first output axis might comprise rotating this driven wheel. Similar might apply e.g. for a first input axis comprising a driving wheel, e.g. a first output axis comprising a carrier gear of a planetary gear train or e.g. a second output axis comprising a ring gear of a planetary gear train. The arrangement allows construction on electric actuator having a backdrivable geartrain without providing a security clutch. In a specific embodiment it is possible to arrange the drivetrain in such a way, that the output interface, and especially a door or lid connected thereto, can be moved manually, e.g. from a moveable to locking position, and in detail e.g. from an opened to a closed position without any additional technical effort. The integration of a drivetrain with one input and two output axis including a locking mechanism ensures a compact and efficient transmission of torque from the motor to the output interface, optimizing space within the actuator’s design. The engagement of the respective parts of the locking means, e.g. as will be mentioned further below optionally of a locking element with a counter locking element, at the locking position, provides a secure locking feature, enhancing the safety and security of the charge port etc. The engagement and disengagement of the means is directly combined with the movement of the output interface, e.g., opening and closing of the charge port, forth and backward movement, movement from the locking to the movable position and vice versa. The present application may find particular applicability in providing a "Push to Run" functionality for use in vehicle components, such as charge port doors, as well as other similar door or flap mechanisms employed in vehicles. One advantageous aspect of incorporating an actuator into such a system is the ability to facilitate a "Push to Run" function. This feature operates such that when the user exerts a force, either by pushing and / or pulling, on a flap or door while it is in its open (or closed) position, the actuator detects this user-initiated movement. In response, the actuator either directly actuates the flap or door, moving it in closing (or open) direction by itself, or via communication with the vehicle. The detection of this movement can be accomplished by sensing externally applied forces, e.g. forces that are applied when the actuator motor is not activated. This movement detection can be achieved, for example, through the incorporation of various types of sensors, such as Hall effect sensors or potentiometers, or alternatively, by using the motor of the actuator itself as a sensor to monitor the forces acting upon the system. To enable such movement detection, it is preferable to implement a backdrivable drivetrain, which allows external forces to induce movement in the system. However, it is important to note that the use of a backdrivable drivetrain in a closed position may be undesirable for safety reasons. Consequently, the present invention provides a solution that balances the need for a backdrivable drivetrain in open positions, while mitigating the safety concerns that arise when the flap or door is in a closed position. It might hold that the locking means is arranged for locking the drivetrain’s backdrivability in the at least one engagement position, when the output interface reaches at least one locking position, e.g. a position in which the supply door is in a closed position, and for unlocking the drivetrain’s backdrivability in the at least one disengagement position, when the output interface is in at least one moveable position, e.g. a position in which the supply door is in an open position, respectively. It might hold that the locking means is arranged for locking the relative movement of the first and the second output axis, wherein the interlocking is engageable and / or releasable by movement of the second output axis. According to an embodiment, the locking means comprises a locking element and a counter locking element, wherein optionally the locking element is coupled to the second output axis, and the counter locking element is coupled to the first output axis, or vise versa, wherein in an engagement position between the locking element and the counter locking element, drivability of the first output axis is locked thereby locking backdrivability of the drivetrain. It might hold that, a part of the locking means arranged at the second output axis, e.g. the counter locking element, might engage with a corresponding element of the locking means, e.g. a locking element, arranged at the first output axis, thereby locking the first output axis against moving and thereby locking backdrivability of the first out put axis and / or the drivetrain, respectively. According to an embodiment, the drivetrain is arranged such that, when the output interface reaches the at least one locking position, the locking element and the counter locking element are arranged in the engagement position. It further holds, that the drivetrain is arranged such that, when the output interface reaches the at least one moveable position, the locking element and the counter locking element are disengaged, i.e. are in a disengagement position. According to an embodiment, the first output axis and the second output axis are coupled to the motor in different transmission ratios. This allows e.g. that the output interface might move and especially rotate in different speed than the locking means, therefore allowing opening and closing movement, followed by a locking movement. The input axis might be any kind of arrangement by which rotation of the electric motor can be transferred to the drivetrain. The input axis might comprise e.g. at least one driving gear. The first and the second output axis might be any kind of arrangement by which movement of the drivetrain can be transferred to the output interface and the locking means, respectively. The output interface might comprise e.g. at least one driven gear. The first and / or second output axis might constitute at least parts of a planetary gear train, as will explained further down below. According to an embodiment, the drivetrain comprises a planetary gear train including a central sun gear, multiple planetary gears, a carrier gear and at least one ring gear, optionally the planetary gears meshing with the sun gear and the ring gear, and the planetary gears revolving around the sun gear while rolling along a circle of the ring gear. Also other embodiments of planetary gear trains might be provided, e.g. having multiple ring gears, not axially arranged planetary gears etc., and constituting an arrangement were the at least first and second output axis are driven individually to ensure that the at least a first output axis, connected to and driving the output interface, and the at least one second output axis, connected to and driving the locking means, are drivable between the least one engagement position and the at least one disengagement position. According to an embodiment, the input axis is coupled to the sun gear and the second output axis is coupled to the ring gear, or vise versa, wherein optionally the output interface is drivable by the input axis via the sun gear, meshing planetary gears and the carrier gear connected to the planetary gear, between the at least one locking position and the moveable position. According to an embodiment, the first output axis is coupled to, optionally is part of the carrier gear, which is connected to the planetary gears, especially is stacked on top of the planetary gears, and the second output axis coupled to, optionally is part of the ring gear, or vise versa. According to an embodiment, the locking means comprises a locking element coupled to, optionally arranged at the ring gear, and a counter locking element coupled to, optionally arranged at the output interface, e.g. the driven gear, or vise versa. According to an embodiment, the locking element is arranged as to rotate together with the ring gear, and the counter locking element is arranged as to rotate together with the output interface, optionally the driven gear or the carrier gear, or vise versa, and wherein optionally the locking element and the counter locking element are arranged as to rotate relative to each other and are arranged in such a way that, when the output interface reaches the at least one locking position the locking element engages with the counter locking element thereby locking turnability of the output interface and backdrivability of the drivetrain. The output interface might comprise the driven gear, optionally also the carrier gear. The carrier gear might mesh with the driven gear. The driven gear might be coupled, optionally be integrally formed with a connection portion where further elements to connect the door with the carrier gear might be provided, optionally one or more coupling gears. According to an embodiment, the locking element and the counter locking element are arranged in such a way that, when the input axis is driven to move the output interface towards the at least one locking position, e.g. in a door closing direction, the locking element and the counter locking element are relatively moving towards the engagement position, and when the input axis is driven to move the output interface towards the at least one moveable position, e.g. in a door opening direction, the locking element and the counter locking element are relatively moving towards a disengagement position, in which drivability of the output interface and backdrivability of the drivetrain are unlocked. According to an embodiment, a first endstop means is provided, arranged in such a way that, when the output interface reaches the at least one locking position, the first endstop means locks further driving of the output interface, optionally the first endstop means being arranged as at least one stop means hindering further rotation of the output interface and / or further movement of a the supply door. The first endstop means might be provided to prevent further rotation of the first output axis, and especially a driven gear, when the output interface, e.g. a door reaches a locking position, ensuring reliable door locking. If e.g. a planetary gear train is provided, although the first output axis, e.g. a driven gear or a door lid etc. gets stopped by the first endstop means, the second output axis, e.g. the ring gear might proceed rotating, thereby engaging the locking element and the counter locking element and providing secure locking of the first output and the driven gear, respectively. Especially locking against backdrive of the drivetrain and the driven gear, and therefore unauthorized opening of the door, is provided. According to an embodiment the drive train is arranged such that, when the input axis drives the output interface into the at least one locking position, where further driving of the output interface is blocked, for example by a first endstop means, the second output axis, optionally the ring gear can be driven further by the input axis, to drive the locking means into their engagement position, optionally to drive the locking element into engagement with the counter locking element, thereby locking the drivetrain’s backdrivability, and / or the drive train is arranged such that, when the locking means is in the engaged position, the output interface is in its locking position and is driven by the input axis in direction of the at least one movable position, the second output axis, optionally the ring gear, drives the locking means into a disengagement position, optionally drives the locking element into disengagement with the counter locking element, thereby unlocking the drivetrain’s backdrivability. Second endstop means might be provided e.g. at the ring gear, to stop rotation of the ring gear, when the movable position and / or the disengagement position of the locking element is reached, to hinder further rotation of the ring gear. Such second endstop means might be arranged to abut against second counter endstop means to stop rotation. The second counter endstop means might be arranged at the housing of the actuator. According to an embodiment, the actuator further comprises the second output axis and especially the ring gear being arranged such that when the input axis and especially the driving gear rotates in the door closing direction and rotation of the output interface and especially the driven gear is blocked, for example by a first endstop means, e.g. when the door reaches the closed position, the second output axis can be moved, especially the ring gear can rotate further to engage the locking means, optionally the locking element with the counter locking element, thereby additionally locking rotation of the first output axis, optionally the output interface, and in optionally the driven gear. According to an embodiment, the locking element and the counter locking element are arranged such that when the input axis is moving and especially a driving gear is rotating in the door closing direction, the locking element and the counter locking element are relatively moving towards an engagement position in which turnability of the first output axis, and especially of a driven gear, especially in an opening rotation direction opposite to the closing direction and optionally also in this closing direction, is locked. Optionally, when the driving gear is rotating in an, especially opposite direction to the door opening direction, the locking element and the counter locking element are relatively moving towards a disengagement position in which turnability of the driven gear, especially in an opening rotation direction, is unlocked. In general it holds that due to (an unlocked) backdrivability of the drivetrain, the drivetrain elements and especially gears are protected from overload during manual displacement The relative movement of the locking element and the counter locking element towards engagement and disengagement positions ensures automatic locking and unlocking of the driven gear, facilitating ease of use and reducing manual intervention. The actuator's design allows for a fail-safe operation where the door remains securely locked in the closed position even if power to the motor is interrupted. The automatic engagement and disengagement of the locking mechanism based on the direction of rotation of the driving gear contributes to the longevity of the actuator by preventing unnecessary strain on the components. According to an embodiment, the actuator further comprises a first endstop means provided such that when the driving gear rotates in the door closing direction and the driven gear reaches the door closed position, further rotation of the driven gear is hindered by the first endstop means. Such a first endstop means can be a door stopper at the area of the charge port. Such a first endstop means might be an arrangement provided with a stop element arranged at one of the provided gears, axles etc. in the drivetrain or the respective output axis, e.g. Such a first endstop means might comprise a stop element and a counter stop element standing against and / or being engaged with each other in the locking position, and being disengaged in a movable position. According to an embodiment, the actuator further comprises a current limiter configured to stop the motor when the locking element is engaged with the counter locking element. In this status, the driven gear is hindered from rotating by a first endstop means and by engagement of the locking element and the counter locking element. Locking of rotation of the driven gear results in a rise in current and off-switching the motor if a preset current threshold is reached.. This feature i.a. contributes to energy efficiency by ensuring that the motor consumes power only until the locking mechanism is engaged, thus avoiding unnecessary energy expenditure. If turning of the first output axis is locked by the locking means, optionally by the locking engagement of the locking element and the counter locking element, the driving current of the motor rises. The current limiter gets activated and the motor is stopped. In this state, the door is e.g. locked and cannot be opened manually due to the engagement of the locking element and the counter locking element. Alternatively or in addition, the actuator is arranged such that when the input axis drives, optionally the driving gear rotates in the door opening direction and the first output axis, optionally the driven gear is in the door closed position and the locking means is engaged, thereby hindering driving of the first output axis, e.g. rotation of the driven gear, driving, optionally rotation of the second output axis, e.g. the ring gear is possible via rotation of the input axis, e.g. the driving gear, thereby disengaging the locking means, and thereby allowing driving, e.g. rotation of the first output axis, e.g. the driven gear to open the door in a motor-driven way. According to an embodiment, the actuator further comprises a counter locking element comprising at least one recess and / or the locking element including at least one projecting finger, especially to be received by a recess, and / or vice versa. The inclusion of a counter locking element with at least one recess and / or a locking element with at least one projecting finger, or vice versa, enhances the precision of the locking mechanism, ensuring secure engagement and improved stability during operation. According to an embodiment, the locking element is arranged at a locking arm arranged at the second output axis, e.g. at the ring gear. The locking arm can be arranged integrally with a part of the second output axis, e.g. the ring gear. The same applies to the locking element. It can e.g. be arranged at the first output axis and especially at the output interface, e.g. the driven gear. The locking arm can be arranged as an elastic locking arm, especially comprising some flexibility, and in detail as an elastic locking arm which can be bent. The actuator allows an arrangement where the locking arm is biased against the first output axis and especially against the output interface, e.g. the driven gear, especially biasing the locking element against the output interface, and especially the counter locking element arranged there. The locking arm can be arranged at the second output axis, e.g. at a ring gear of a planetary gear train, and optionally in such a way that it swivels around a center of the ring gear, when the same rotates relative to the planetary gears, the carrier gear and / or the sun gear. The locking arm can be arranged such that when the output interface gets locked, e.g., by the connected door or a similar acting stop element abutting at a first endstop element, the locking arm moves furthers, optionally swivels further around the center of the second output axis, e.g. the ring gear and relative to the counter locking element, moving the locking element in engagement with the counter locking element, especially in a movement with a radial component to the swiveling movement. Such radial component movement might comprise a translational movement of the locking element arranged as a projecting finger in a recess built as the counter locking element at the output interface, e.g. the driven gear. The counter locking element might be fixed in position when the output interface is locked, wherein the locking element moves to align with the counter locking element in coincidence with the rotation of the second output axis, e.g. the ring gear. The relative movement of the locking element relative to the counter locking element can be a combination of a rotational movement along a circular path evolving around the center of the ring gear and a radial movement in the direction of the center of the driven gear. The locking element and the counter locking element can be arranged such that the engagement of the two comprises a snapping movement where the locking element is biased against the counter locking element. According to an embodiment, the actuator further comprises the counter locking element wherein especially the slider element is a projecting finger. The design wherein the slider element functions as a projecting finger simplifies the actuator's structure, potentially reducing manufacturing complexity and costs. According to an embodiment, the actuator further comprises the driving gear and the sun gear being force coupled via at least one first intermediate gear, especially integrally and / or coaxially arranged with the sun gear, optionally the driving gear meshing with the first intermediate gear, further optionally the first intermediate gear integrally produced with the sun gear. The driven gear and the sun gear might be coupled with each other via the carrier gear, especially coaxially arranged with the sun gear and / or the planetary gears, and optionally being provided as an individual gear. The carrier gear might be force coupled with the planetary gears, optionally meshing with the output interface and especially with the driven gear of the output interface. According to an embodiment, the actuator further comprises planetary gears being arranged on a cage element that comprises an axle for each of the planetary gears. The arrangement of planetary gears on a cage element that includes an axle for each gear ensures balanced load distribution and improved gear alignment, which can lead to increased mechanical efficiency and reduced wear. the cage element might be connectable with the carrier gear. The cage element might comprise connector element connectable with counter connector elements of the carrier gear. The arrangement of the cage element, the planetary gears, optionally the outer ring gear, and the carrier gear, connected to each other via engagement of the connector elements and the counter connector elements, might constitute a planetary gear train element fixed together. Optionally it holds that the actuator is sealed, especially sealed waterproof, and further especially sealed according too a IP67 rating. Due to the arrangement of the inventive locking means and its activation by the input axis coupled to the two output axis, sealing of the actuator can be reliably be provided. Optionally, all activator parts, e.g. the motor, the input axis, the first axis and the second axis, especially with all of their respective parts, e.g. axles and gears, are covered in a single sealed housing, allowing a simple sealing, without any need of means and especially mechanical means, e.g. for locking the actuator and unlocking the actuator, extending form the inside of the housing to the outside. Optionally it holds that the actuator is further comprising a disengaging means arranged for manually driving the locking means from the engagement position into the disengagement position, optionally arranged for manually unlocking the drivetrain’s backdrivability, when the output interface is in the at least one locking position, further optionally arranged for manually disengaging a locking element and a counter locking element, both being part of the locking means. The disengaging means might comprise a pull or push wire or similar activation arrangement, for manually driving the locking means from the engagement position to the disengagement position, optionally for rotating a ring gear of a planetary gear train, the ring gear comprising a locking element of the locking means. The present disclosure is illustrated by way of example and not limited in the accompanying figures in which like reference numerals indicate similar elements. Embodiments of the application will now be described with reference to the attached drawings: · Fig. 1 shows a top view of an embodiment of the invention; · Fig. 2 shows a side view of the embodiment of Fig. 1; · Fig. 3 shows a section view according to lines A-A of Fig.2 of the embodiment of Figs. 1 and 2, the actuator being in a movable position; · Fig. 4 shows a section view according to lines B-B of Fig.2 of the embodiment of Fig. 1 and 2, the actuator being in a movable position; · Fig. 5 shows a detail view of the cross section according to Fig. 4, the actuator being in a movable position; · Fig. 6 shows a section view according to lines B-B of Fig.2 of the embodiment of Fig. 1 and 2, the actuator being in an alignment position; · Fig. 7 shows a section view according to lines A-A of Fig.2 of the embodiment of Fig. 1 and 2, the actuator being in a locking position; · Fig. 8 shows a section view according to lines B-B of Fig.2 of the embodiment of Fig. 1 and 2, the actuator being in a locking position; · Fig. 9 shows a detail view of the cross section according to Fig. 4, the actuator being in a locking position; · Fig. 10 shows an exploded view of the embodiment according to Figs. 1 and 2; · Fig. 11 shows a further exploded view of the embodiment according to Figs. 1 and 2; · Figs 12 – 16 show different views and sections of an embodiment of a planetary gear train to be used in an embodiment of the invention, especially according to Fig. 1; and · Figs 17 – 19 show detailed section views according to lines A-A of Fig. 2 of the embodiment of Figs.1 and 2 of the actuator in a movable position, an alignment position, and a locking position, with indicated relative rotation directions. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs as read in the context of the description and drawings. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. In some instances, detailed descriptions of well-known devices and methods may be omitted so as not to obscure the description of the present systems and methods. Terminology used for describing particular embodiments is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood, that the terms "comprises" and / or "comprising" specify the presence of stated features but do not preclude the presence or addition of one or more other features. It will be further understood that when a particular step of a method is referred to as subsequent to another step, it can directly follow said other step or one or more intermediate steps may be carried out before carrying out the particular step, unless specified otherwise. Likewise it will be understood that when a connection between structures or components is described, this connection may be established directly or through intermediate structures or components unless specified otherwise. All publications, patent applications, patents, and other references mentioned herein are incorporated by reference in their entirety. In case of conflict, the present specification, including definitions, will control. The invention is described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The description of the exemplary embodiments is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the drawings, the absolute and relative sizes of systems, components, layers, and regions may be exaggerated for clarity. Embodiments may be described with reference to schematic and / or cross-section illustrations of possibly idealized embodiments and intermediate structures of the invention. Relative terms as well as derivatives thereof should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description and do not require that the system be constructed or operated in a particular orientation unless stated otherwise. Figures 1 – 9 are showing different views of one embodiment of the inventive actuator and e.g. of an electric actuator 1 designed to operate a door of a charging port of an electric vehicle. The electric actuator is in detail arranged for opening and closing a supply door, e.g. a charge port door or a fuel lid of a vehicle. It comprises an electric motor 6, a drivetrain 20 and an output interface 63, wherein the drivetrain 20 is coupled to the motor 6 and the output interface 63 such that driving the motor 6 drives, optionally rotates the output interface 63, e.g. for opening and closing a coupled supply door. The door can be coupled to the output interface by at least one gear and especially a driven gear 60. The output interface 63 might be the driven gear 60. In addition it might hold that the input axis11 might comprise at least one driving gear 10, especially coupled with the motor 6. The driving gear 10 might be coupled to the first output axis 61 and especially the driven gear 60 by the drive train 20. The drivetrain 20 is arranged such that it is backdrivable via driving, optionally rotating the output interface 63, wherein the drivetrain 20 comprises at least one input axis 11 connected to the motor 6, and at least a first output axis 61, connected to and driving the output interface 63. Here the backdrivability allows the output interface being driven manually to rotate the geartrain in a backward direction. Optionally the backdrivability and the arrangement of the actuator allows the supply door being moved manually by a user from especially an open direction to a closed direction, thereby driving back the geartrain. Optionally the arrangement allows to close the door into at least one closed position without any additional clutches and additional security means need to be provided. The door might be openable by activating the motor and driving the door from a closed position into the open position and being closed manually and especially with out activating the motor. Closing the door by motor might also be possible. Further, a second output axis 31 is provided, connected to and driving a locking means 33 between at least one engagement position and at least one disengagement position, wherein the locking means 33 is arranged for locking the drivetrain’s backdrivability in the at least one engagement position, when the output interface 63 reaches at least one locking position, e.g. a position in which the supply door is in a closed position, and for unlocking the drivetrain’s backdrivability in the at least one disengagement position, when the output interface 63 is in at least one moveable position, e.g. a position in which the supply door is in an open position, respectively. The actuator housing encloses especially the above key mechanical components. The housing might comprise a lower housing 2 and an upper housing 4. Optionally the drivetrain 20 comprises a planetary gear train 20 including a central sun gear 50, multiple planetary gears 40, and an ring gear 30. As can be seen especially in Fig. 4, optionally the planetary gears 40 are meshing with the sun gear 50 and the ring gear 30, and the planetary gears 40 revolving around the sun gear 50 while rolling along a circle of the ring gear 30. Further, the input axis 11 might be coupled to the sun gear 50. The first output axis 61 might be coupled to the carrier gear 54 and the second output axis 31 might be coupled to the ring gear 30, or vise versa. Also it might hold that the output interface 63 is drivable by the input axis 11 via the sun gear 50, optionally meshing with the planetary gears and the carrier gear, between the at least one locking position and the moveable position. As shown especially in Fig. 4, the actuator might include the ring gear 30 with a distinct gear pattern visible, and within this gear train, a central sun gear 50 and multiple planetary gears 40. Surrounding the planetary gear train 20, multiple screw holes and alignment features are visible, which are used for securing the actuator 1 components together and mounting the entire assembly to the vehicle. The general shape of the actuator 1 housing is irregular, with various protrusions and recesses to accommodate the internal components and external mounting requirements. The depiction is focused on the layout and arrangement of these components within the actuator 1 and provides an overview of how the internal parts are positioned relative to one another. In the following mentioning the drivetrain 20 might comprise the planetary drivetrain 20, the driven gear 60 and the driving gear 10 in common. Figs. 3 – 5 are showing different views and section of the actuator in an movable position. In detail section views according to lines A-A and B-B of Fig. 2 of the embodiment of Fig. 1 and 2 are shown, wherein the actuator 1 is in moveable state. In this state the drivetrain 20 of the actuator is not locked and in detail the driven wheel 60 is unlocked and a potentially coupled door is open and optionally moveable by extending a force at that door. As the shown drivetrain 20 is back drivable manually, it might be possible to drive the motor 8 especially in two directions by turning the driven gear 60, especially manually. As shown with Figs. 3 -5, the actuator 1 includes the motor 6 positioned in the upper housing 4, with the motor axle 8 comprising the driving gear 10, coupled with the gear train 20, optionally provided as a planetary gear train 20 (see e.g. Fig. 4). The various elements within this figure are part of a mechanism that translates the motor's driving and especially rotational motion into the controlled rotation of the first output axis 61, optionally of the driven gear 60 and therefore e.g. into an opening and closing of a coupled supply door (not shown), as outlined in the provided claims. As will explained later, also shown is a carrier gear 54 coupled with the sun gear 50. This carrier gear 54 is arranged as to be coupled to the output interface, especially the driven gear 60, in this particular embodiment optionally via an intermediate meshing gear 62 as shown with Figs. 10 and 11. This intermediate meshing gear 62 can be arranged integrally with the driven gear 60, constituting at least a part of the output interface 63. Optionally it holds that the driving gear 10 and the sun gear 50 are force coupled via at least one first intermediate gear 52, especially integrally and / or coaxially arranged with the sun gear 50. Also it might hold that the driven gear 60 and the sun gear 50 are coupled via the least one carrier gear 54, especially coaxially arranged with the sun gear 50. Fig. 4 is a section view according to lines B-B of Fig. 2 of the embodiment of Fig. 1 and 2, wherein again, the actuator 1 is in movable position, identical to the one shown in Fig. 3. The cross-sectional view provided in Fig. 4 presents the electric actuator 1, comprising motor 6 with the motor axle 8 connected to the driving gear 10. Below the motor 6 is the planetary gear train 20, which is made up of the central sun gear 50 surrounded by multiple planetary gears 40 located within the ring gear 30. The arrangement allows the planetary gears 40 to mesh with both the sun gear 50 and the ring gear 30. Following the force transmission path, the driving gear 10 is in operative connection with the sun gear 50. The driven gear 60 is optionally situated to the right side of the gear train, and it is rotatably mounted in a way that allows it to engage with the locking mechanism of the actuator 1. The drivetrain 20 is arranged in such a way that the driven gear is back drivable by manual rotation of the driven gear by a e.g. a user, and e.g. by swiveling the door couple to said driven gear. Optionally and a shown with e.g. Fig. 5, the locking means 33 comprises a locking element 34 and a counter locking element 64, wherein the locking element 34 is coupled to the second output axis 31, and the counter locking element 64 is coupled to the first output axis 61, or vise versa, wherein in an engagement position of the locking means (e.g. shown with Figs. 7 - 10), and optionally between the locking element and the counter locking element, drivability of the first output axis 61 is locked thereby locking backdrivability of the drivetrain 20. It might be possible that the drivetrain 20 is arranged such that, when the output interface 63 reaches the at least one locking position, the locking element 34 and the counter locking element 64 are arranged in the engagement position. This can be seen especially in Figs. 7 – 9. The locking means 33 optionally comprises the locking element 34 coupled to, optionally arranged at the ring gear 30, and a counter locking element 64 coupled to, optionally arranged at the sun gear, or vise versa, if the actuator, like shown here is provided with a gear train 20 comprising a planetary drive train. The locking element 34 might be arranged as to rotate together with the ring gear 30, and the counter locking element 64 might be arranged as to rotate together with the output interface 63, or vise versa. Optionally the locking element 34 and the counter locking element 64 are arranged as to rotate relative to each other and are arranged in such a way that, when the output interface 63 reaches the at least one locking position, the locking element 34 engages with the counter locking element 64 thereby locking turnability of the output interface 63 and backdrivability of the drivetrain 20 (e.g. shown with Figs. 7 - 10). The locking element 34 and the counter locking element 64 might further be arranged in such a way that, when the input axis 11 is driven to move the output interface 63 towards the at least one locking position, e.g. in a door closing direction, the locking element 34 and the counter locking element 64 are relatively moving towards the engagement position. Also it might hold that when the input axis 11 is driven to move the output interface 63 towards the at least one moveable position, e.g. in a door opening direction, the locking element 34 and the counter locking element 64 are relatively moving towards a disengagement position, in which drivability of the output interface 63 and backdrivability of the drivetrain 20, respectively, are unlocked. As shown e.g. with Figs. 5 and 9, the locking element 34 might be arranged at a locking arm 32, which is optionally arranged at a ring gear 30 of a planetary gear train. Also, the counter locking element 64 might comprise a recess 66 and / or the locking element 34 might include at least one projecting finger 38, especially to be received by a recess 66. As shown with the same Figs., the locking element 34 in addition might comprise a slider element 36 sliding along a sliding track 68 coupled to the first output axis 61, the sliding track 68 comprising the counter locking element 64, wherein especially the slider element 36 is a projecting finger 38. The ring gear 30 optionally features the locking arm 32 extending outward, with a locking element 34 e.g. at its end. This locking element 34 is designed to engage with the corresponding counter locking element 64 which might be a part of the driven gear 60 assembly. The locking mechanism operates in such a way that when the driven gear 60 reaches the defined locking position e.g. the closed position for the door, the driven gear 60 stops rotating. Due to the planetary gear train 20, the ring gear 30 further rotates, aligning the locking element 34 with the counter locking element 64 (see Fig. 6, showing the alignment position) and after that engaging the locking element 34 with the counter locking element 64, thereby preventing further rotation of the driven gear 60 and securing the door in the closed position (see Figs.7 - 9). Fig. 5 shows a detail view of the cross section according to Fig. 4, the actuator 1 again being in a movable position. The image shown is a detailed cross-sectional view of an electric actuator 1 mechanism. In the figure, reference numeral 10 identifies the driving gear 10, which is force coupled with the motor 6. The planetary gear train 20, indicated by reference numeral 20, consists of the multiple planetary gears 40 that mesh with the central sun gear 50 and the ring gear 30. These planetary gears 40 revolve around the sun gear 50, causing it to rotate along a circular path defined by the ring gear 30. The ring gear 30 comprises the locking arm 32. The locking element 34 is situated optionally at the locking arm’s end, optionally featuring the slider element 36 and optionally the projecting finger 38. Optionally directly opposite the projecting finger 38 is the driven gear 60, which comprises the counter locking element 64 that is capable of engaging with the locking element 34 when the driven gear 60 reaches the door closed position or any similar position, where the actuator needs to be locked. Notably, the counter locking element 64 optionally includes the recess 66 specifically designed to receive the projecting finger 38. Additionally, the driven gear 60 may incorporate the sliding track 68, which facilitates the sliding motion of the locking element's slider element 36. Optionally it holds that the locking element 34 and the counter locking element 64 are arranged in such a way that, when the input axis and especially the driving gear 10 is rotating in the door closing direction, the locking element 34 and the counter locking element 64 are relatively moving towards an alignment position and further towards the engagement position (see Fig. 6 the alignment position short before reaching the engagement position as shown with Figs. 7 – 9), in which turnability of the first output axis 61 and optionally the driven gear 60 is locked. Optionally, when the input axis and optionally the driving gear 10 is rotating in an opposite direction, e.g. the door opening direction, the locking element 34 and the counter locking element 64 are relatively moving towards the disengagement position. This can be any position shown in Fig. 6 and Figs. 3 - 5, in which turnability of the first output axis 61 and optionally the driven gear 60 is unlocked. At least one first endstop means (not shown) might be provided, arranged in such a way that, when the output interface 63 reaches the at least one locking position, the first endstop means locks further driving of the output interface 63. Optionally the first endstop means is arranged as at least one stop means hindering further rotation of the output interface 63 and / or further movement of a the supply door. I can be provided as a stop element, where the door abuts at, when it reaches the door closed position. The first endstop means might be provided as at least one stop element, e.g. the first output axis is driven against, hindering further movement of the first output axis, and e.g. as at least one stop element a driven gear or any other element of the first output axis or the gear train 20 moves and especially rotates against, getting stopped in its movement and especially rotation by that stop element. Optionally it holds that the ring gear 30 is arranged such that, when the input axis 11 and the driving gear 10, respectively, rotates in the door closing direction and rotation of the first output axis 61 and the driven gear 60, respectively, is blocked, for example by a first endstop means, when the door reaches the closed position, the ring gear 30 can rotate further, to engage the locking element 34 with the counter locking element 64, thereby additionally locking rotation of the driven gear 60. Also, in addition or as an alternative, it holds that the ring gear 30 might be arranged such that, when the first output axis 61 and the driving gear 10, respectively, rotates in the door opening direction, the driven gear 60 is in the door closed position, and the locking element 34 is in engagement with the counter locking element 64, thereby hindering rotation of first output axis 61, rotating of the ring gear 30 is possible thereby disengaging the locking element 34 and the counter locking element 64, and thereby allowing rotation of the first output axis 61 and the driven gear 60, respectively, especially in a counter direction to open the door. At least one Second endstop means 70 might be provided e.g. at the ring gear 30, to stop rotation of the ring gear, when the movable position and / or the disengagement position of the locking element 34 is reached, to hinder further rotation of the ring gear 30 (See. Fig. 5 and 14). Such second endstop means 70 might be arranged to abut against second counter endstop means 72 to stop rotation of the ring gear. The second counter endstop means might be arranged at the upper or lower housing 2, 4 of the actuator 1. As already mentioned, Fig. 6 is a section view according to lines B-B of Fig. 2 of the embodiment of Fig. 1 and 2, the actuator 1 being in an intermediate still moveable alignment position. In Fig. 6, we see a cross-sectional view of the electric actuator 1 identical to the one shown with Fig. 4, but in a position short before engagement of the locking element 34 and the counter locking element 64. In this position, the first output axis 61 and the driven gear, respectively, has reached a stop position, where it is stopped from turning further, e.g. by an endstop means as explained before. The ring gear 30 is allowed to rotate further, here swiveling the locking arm optionally in a clock turn direction and engaging the locking element 34 with the counter locking element 64, producing their relative engagement as shown in Fig. 6 and further with Figs. 7 – 9. In detail here, the locking element 34 is optionally swiveled into the recess 66 (see Fig. 9) of the counter locking element 64 Fig. 9 is a detail view of the cross section according to Fig. 4, the actuator 1 again being in a locking position. Fig. 9 is identical to Figs. 5, however showing the different gears of the drivetrain in different positions and especially the locking element 34 and the counter locking element engaged with each other. It shows the internal arrangement of gears and locking mechanisms within the actuator 1 housing. Here on the left side of the image, the input axis comprising the driving gear 10 is shown located within the lower housing 2 of the actuator 1. This gear is responsible for transmitting the motor's rotational force. In the center of the image lies the planetary gear train 20, which includes an ring gear 30, multiple planetary gears 40, and a central sun gear 50. These planetary gears 40 mesh with both the sun gear 50 and the ring gear 30, allowing for the distribution of torque and reduction of speed from the motor 6 to the first output axis 61 comprising the driven gear 60. The sun gear 50 is optionally directly force-coupled with the driven gear 60 which is depicted on the right side of the figure. The driven gear 60 is equipped with a counter locking element 64 that optionally contains a recess 66. When the driven gear 60 reaches its defined stop position, e.g. the door's closed position, this counter locking element 64 engages with the locking element 34. In this particular embodiment, when the driven gear 60 reaches its defined stop position, it is stopped being rotated by the rotation of the motor. However, the ring gear still can rotate further, till engagement of its locking element 34 with the counter locking element 64. Here, the locking element 34 is optionally shown as part of the locking arm 32 which is secured to the ring gear 30. A slider element 36, possibly a projecting finger 38, can be provided, arranged at the locking arm 32. Finally, a sliding track 68 can be provided, allowing the locking and counter locking elements to engage and disengage as the actuator 1 operates. This mechanism ensures the door is securely locked when closed and allows for its controlled opening and closing. Optionally, the actuator is arranged to open and close a supply door by use of the motor. Fig. 9 in addition shows a malfunction disengaging means 80 arranged for manually driving the locking means from the engagement position into the disengagement position, optionally arranged for manually unlocking the drivetrain’s backdrivability, when the output interface 63 is in the at least one locking position, further optionally arranged for manually disengaging a locking element 34 and a counter locking element, both being part of the locking means. This disengagement means can especially be used to unlock the actuator, e.g. to manually close the door, when a technical malfunction occurs, e.g. a power loss, so that the motor is not operating anymore. Here, the disengaging means 80 comprises a pull or push wire or similar activation arrangement, for manually driving the locking means from the engagement position to the disengagement position. Optionally the disengaging means 80 is attached at the ring gear 30 and a fixation part 82 of the housing of the actuator for rotating the ring gear, thereby disengaging the locking means, and especially lifting the projecting finger 38 out of the recess 66. It might be provided, that the locking ability and especially engagement of the locking means can be repositioned to engage also in a door open position. Figs. 10 and 11 show two different exploded views of an embodiment of the actuator, optionally the one described before. Figs. 12 – 16 show different views of an embodiment of a planetary gear train with could be provided with the embodiment according to Fig. 1 and described herein. In detail: Figs. 10 and 11 are showing two exploded views showing the major components of the actuator, including the motor 6, motor axle 8, driving gear 10, input axis 11, drivetrain 20, lower housing 2, and output interface 63, and are especially focusing on the interaction of the drivetrain 20 components, including the ring gear 30, locking means 33, planetary gears 40, cage element 42 and carrier gear 54, and sun gear 50. Fig. 12 shows an exploded view highlighting the carrier gear 54, counter locking element 64, second output axis 31, and related drivetrain elements. Fig. 13 shows a side view displaying the alignment of the first output axis 61, second output axis 31, carrier gear 54, and ring gear 30. Fig. 14 shows a cross-sectional top view showing the relative positions of the locking arm 32, locking element 34, projecting finger 38, and slider element 36 within the planetary gear train. Fig. 15 shows a detailed top view of the arrangement between the ring gear 30, first output axis 61, and carrier gear 54, showing the counter locking element 64. Fig. 16 shows a cross-sectional side view displaying the assembly of the first output axis 61, carrier gear 54, ring gear 30, and input axis 11. The actuator might include a planetary gear train as part of the drivetrain 20. This planetary gear train e.g. consists of a central sun gear 50, multiple planetary gears 40, a carrier gear 54, and a ring gear 30. The planetary gears 40 might mesh with both the sun gear 50 and the ring gear 30. As the sun gear 50 rotates, the planetary gears 40 revolve around it while rolling along the internal surface of the ring gear 30. The planetary gears 40 are comprising recesses 46 in which legs 44 of the carrier gear 54 are entered, coupling the planetary gears with the carrier gear. Revolving of the planetary gears around the sun gear 50 carries the carrier gear 54 in rotational movement coaxially to the sun gear. This rotational movement drives the output interface 63, and especially the driven gear 60 and the intermediate gear 62, respectively, meshing with the carrier gear 54. Figs. 17 – 19 are disclosing detailed section views according to lines A-A of Fig. 2 of an embodiment similar to the one shown with Figs. 1 and 2 of the actuator in a movable position (Fig. 17), an alignment position (Fig. 18) and a locking position (Fig. 19). In all of these Figures relative rotation directions are indicated by big arrows. In Figs. 17 - 19, the ring gear 30 can be rotated by the input axis 11 and its driving gear and rotates relative to the driven gear 60 till the locking element 34 engages with the counter locking element 64. In Fig. 17 it is shown, that the first output axis 61and its driven gear 60 can be rotated by driving and especially rotation of the input axis 11 and its the driving gear 10, rotating the sun gear 50. The driven gear, force coupled with the sun gear 50 is rotated in a door closing direction. The ring gear 30 abuts with its locking arm 32 against the driven gear 60 and especially against a sliding track 68. Here the ring gear and the locking arm respectively comprise a slider element 36 comprising a projecting finger 34 (see Fig. 10 and 11). Due to this abutment the ring gear is hindered in further rotating, till it reaches the alignment position shown in Fig. 18. In this position, the ring gear can slightly further rotate thereby engaging, here optionally lowering, the locking element 34 with / in the counter locking element 64. In this alignment position, optionally the driven gear is hindered in further rotating e.g. by a endstop means, e.g. by the coupled door abutting against a door bearing. As mentioned, the drivetrain in this embodiment is backdrivable. This is possible in the moveable position and also in the alignment position according to Fig. 18, by especially manually rotating the driven gear backwards, i.e. in a door opening direction, might rotate the gear train backwards. With Fig. 19, the engagement and locking position respectively, is shown, disclosing engagement of the locking element 34 with the counter locking element 64, where the driven gear is additionally hindered in further rotating and reverse rotating.

[0002] Reference signs 1 Actuator 2 Lower housing 4 upper housing 6 electric motor 8 motor axle 10 driving gear 11 input axis 20 drivetrain 30 ring gear 31 second output axis 32 locking arm 33 locking means 34 locking element 36 slider element 38 projecting finger 40 planetary gear 42 cage element 43 connector element 44 planetary gear axle 45 counter connector element 46 recess 50 sun gear 52 first intermediate gear 54 carrier gear 55 base plate 56 connecting axle 57 legs 60 driven gear 61 first output axis 62 intermediate meshing gear 63 output interface 64 counter locking element 66 recess 68 sliding track 70 second endstop means 72 second counter endstop means 80 disengaging means

Claims

AMENDED CLAIMS received by the International Bureau on 22 December 2025 (22.12.2025)1. Electric actuator for opening and closing a supply door, e.g. a charge port door or a fuel lid, of a vehicle, comprising an electric motor (6), a drivetrain (20) and an output interface (63), wherein the drivetrain (20) is coupled to the motor (6) and the output interface (63) such that driving the motor (6) drives, optionally rotates the output interface (63), e.g. for opening and closing a coupled supply door, and wherein the drivetrain (20) is arranged such that it is backdrivable via driving, optionally rotating the output interface (63), wherein the drivetrain (20) comprises at least one input axis (11) connected to the motor (6), c h a r a c t e r i z e d i n that the drivetrain (20) further comprises at least a first output axis (61), connected to and driving the output interface (63), and a second output axis (31), connected to and driving a locking means (33) between at least one engagement position and at least one disengagement position, wherein the locking means (33) is arranged for locking the drivetrain’s b ackdrivability in the at least one engagement position, and for unlocking the drivetrain’s backdrivability in at least one disengagement position, wherein the locking means (33) comprises a locking element (34) and a counter locking element (64), wherein the locking element (34) is coupled to the second output axis (31), and the counter locking element (64) is coupled to the first output axis (61), or vise versa, wherein in an engagement position between the locking element and the counter locking element, drivability of the first output axis (61) is locked thereby locking backdrivability of the drive train (20).

2. Electric actuator according to claim 1, c h a r a c t e r i z e d i n that the locking means (33) is arranged for locking the drivetrain’s backdrivability in the at least one engagement position, when the output interface (63) reaches at least one locking position, e.g. a position in which the supply door is in a closedposition, and for unlocking the drivetrain’s backdrivability in the at least one disengagement position, when the output interface (63) is in at least one moveable position, e.g. a position in which the supply door is in an open position, respectively.

3. Electric actuator according to claim 1 or 2, c h a r a c t e r i z e d i n that the locking element (34) is arranged at the second output axis or the output interface.

4. Electric actuator according to any one of the preceding claims, especially claim 3, c h a r a c t e r i z e d i n that the drivetrain (20) is arranged such that, when the output interface (63) reaches the at least one, optionally is in the at least one locking position, the locking element (34) and the counter locking element (64) are arranged in the engagement position.

5. Electric actuator according to any one of the preceding claims, c h a r a c t e r i z e d i n that the first output axis (61) and the second output axis (31) are coupled to the input axis, optionally the motor (6) in different transmission ratios.

6. Electric actuator according to any one of the preceding claims, c h a r a c t e r i z e d i n that the drivetrain (20) comprises a planetary gear train (20), optionally including a central sun gear (50), multiple planetary gears (40), a carrier gear (54), and at least one ring gear (30), optionally the planetary gears (40) meshing with the sun gear (50) and the ring gear (30), and the planetary gears (40) revolving around the sun gear (50) while rolling along a circle of the ring gear (30).

7. Electric actuator according to any one of the preceding claims, especially claim 6, c h a r a c t e r i z e d i n thatthe first output axis (1) is force coupled to, optionally is the carrier gear (54) and the second output axis (31) is force coupled to, optionally is the ring gear (30), or vise versa, wherein optionally the output interface (63) is drivable by the first output axis (61) via the carrier gear (50) between the at least one locking position and the moveable position.

8. Electric actuator according to any one of the preceding claims, especially any of the claims 5 - 7, c h a r a c t e r i z e d i n that the locking means (33) comprises a locking element (34) coupled to, optionally arranged at the ring gear (30), and / or a counter locking element (64) coupled to, optionally arranged at the output interface (64), optionally the driven gear (60) or the carrier gear (54).

9. Electric actuator according to any one of the preceding claims, especially claim 8, c h a r a c t e r i z e d i n that the locking element (34) is arranged as to rotate together with the ring gear (30), and the counter locking element (64) is arranged as to rotate together with the output interface (63) and / or the carrier gear (54), or vise versa, and wherein optionally the locking element (34) and the counter locking element (64) are arranged as to rotate relative to each other and are arranged in such a way that, when the output interface (63) reaches the at least one locking position, the locking element (34) engages with the counter locking element (64) thereby locking turnability of the output interface (63) and backdrivability of the drive train (20).

10. Electric actuator according to any one of the preceding claims, especially any of the claims 2 - 9, c h a r a c t e r i z e d i n that the locking element (34) and the counter locking element (64) are arranged in such a way that, when the input axis (11) is driven to move the output interface (63) towards the at least one locking position, e.g. in a door closing direction, the locking element (34) and the counter locking element (64) are relatively moving towards the engagement position, and when the input axis (11) is driven to movethe output interface (63) towards the at least one moveable position, e.g. in a door opening direction, the locking element (34) and the counter locking element (64) are relatively moving towards a disengagement position, in which drivability of the output interface (63) and back drivability of the drivetrain (20), respectively, are unlocked.

11. Electric actuator according to any one of the preceding claims, c h a r a c t e r i z e d i n that an endstop means is provided, arranged in such a way that, when the output interface (63) reaches the at least one locking position, the endstop means locks further driving of the output interface (63), optionally the endstop means being arranged as at least one stop means hindering further rotation of the output interface (63) and / or the carrier gear (54) and / or further movement of a the supply door.

12. Electric actuator according to any one of the preceding claims, c h a r a c t e r i z e d i n that, the drive train (20) is arranged such that, when the input axis (11) drives the output interface (63) into the at least one locking position, where further driving of the output interface (63) is blocked, for example by an endstop means, the second output axis (31), optionally a ring gear (30) of a planetary gear train, can be driven further by the input axis (11), to drive the locking means (33) into its engagement position, optionally to drive a locking element (34) into engagement with a counter locking element (64), thereby locking the drivetrain’s back drivability, and / or the drive train (20) is arranged such that, when the locking means (33) is in the engagement position, the output interface (63) is in its locking position and is driven by the input axis (11) in direction of the at least one movable position, the second output axis (31), optionally a ring gear (30) of a planetary gear train, drives the locking means (33) into a disengagement position, optionally drives a locking element (34) into disengagement with a counter locking element (64), thereby unlocking the drive train’s back drivability.

13. Electric actuator according to any one of the preceding claims, especially any of the claims 3-12, c h a r a c t e r i z e d i n that the locking element (34) being arranged at a locking arm (32), which is optionally arranged at a ring gear (30) of a planetary gear train, and / or the counter locking element (64) comprising a recess (66) and / or the locking element (34) including at least one projecting finger (38), especially to be received by a recess (66).

14. Electric actuator according to any one of the preceding claims, especially any of the claims 3-13, c h a r a c t e r i z e d i n that the locking element (34) comprises a slider element (36) sliding along a sliding track (68) coupled to the first output axis (61), the sliding track (68) comprising the counter locking element (64), wherein especially the slider element (36) is a projecting finger (38).

15. Electric actuator according to any one of the preceding claims, c h a r a c t e r i z e d i n further comprising a current limiter configured to stop the electric motor (6) when the locking element (34) is engaged with the counter locking element (64).

16. Electric actuator according to any one of the preceding claims, c h a r a c t e r i z e d i n further comprising a disengaging means (80) arranged for manually driving the locking means from the engagement position into the disengagement position, optionally arranged for manually unlocking the drivetrain’s back drivability, when the output interface (63) is in the at least one locking position, further optionally arranged for manually disengaging a locking element (34) and a counter locking element, both being part of the locking means.

17. Electric actuator according to any one of the preceding claims, especially claim 16,c h a r a c t e r i z e d i n the disengaging means (80) comprising a pull or push wire or similar activation arrangement, for manually driving the locking means from the engagement position to the disengagement position, optionally for rotating a ring gear of a planetary gear train, the ring gear comprising a locking element of the locking means.

Images