Door closer, electro-hydraulic damping module and method for influencing a drive movement of a door closer

Abstract

Drive device (20) for a wing element (14) such as a door, a window, a flap, in particular in the form of a door closer, which is movable relative to a frame element (12), with - a housing (22) in which a fluid piston (24) is axially displaceable, which is designed to transmit a driving force (48) and which acts on a first fluid volume (26), - a fluid converter (66) coupled to the first fluid volume (26) and designed to convert fluid energy into a mechanical converter movement (n) of a converter element (68), and - an electric machine (70) coupled to the converter element (68) and designed to convert the converter movement (n) into auxiliary electrical energy and / or heat energy, wherein the fluid converter (66) is configured to convert a fluid volume flow from the first fluid volume (26) to a second fluid volume (28) into the mechanical converter movement (n), wherein an output port (80) of the fluid converter (66) is connected to the second fluid volume (28) via an electrically controllable valve arrangement (82), wherein the electric machine (70) and the valve arrangement (82) are connected to an electronic control device (72) which is configured to control the electric machine (70) and the valve arrangement (82) depending on at least one environmental state variable, wherein a hydraulic damping function can be set up by means of the electrically controllable valve arrangement (82) which is a function of an opening angle or of another environmental state parameter.

Description

[0001] The present invention relates to a drive device for a wing element movable relative to a frame element, such as a door, a window, a flap, in particular in the form of a door closer, having a housing in which a fluid piston is mounted axially displaceably, which is designed to transmit a drive force and which acts on a first fluid volume, wherein the drive force is preferably generated by a closing spring acting on the fluid piston.

[0002] Document EP 1 340 877 B1 discloses a drive device in the form of a door closer, wherein the door movement during a closing process can be influenced by a closing spring, specifically by means of an influencing element that can be designed as a valve, a braking device, or a generator. If a generator is used, this is drivingly coupled to a piston toothing via a gear. A movement of the leaf element is detected by a sensor. The sensor signal is fed to a control device that controls the influencing element. Furthermore, the door closer can include an electric motor that can be used for motorized closing force adjustment. Motorized opening assistance using an electrically driven pump is also disclosed. In general, it should be possible to assign an adjustable and changeable value for the closing damping to each opening angle of the leaf.

[0003] Document DE 195 14 610 A1 discloses a door closer whose damping medium is designed as an electrorheological medium. A device interacting with the medium (e.g., in the form of electrodes) influences the opening and / or closing process.

[0004] Document DE 603 ​​20 349 T3 discloses a door closer with hydraulic damping, with means for locking the door in an open position. Control means with an electrical power supply can actuate the locking means. If the electrical power supply to the control means is lost, the locking means are reset to a retracted position. The mechanical locking mechanism ensures that the door always remains in the open position, thus ensuring that it remains permanently open, unlike a hydraulic locking device.

[0005] Document DE 10 2007 042 269 A1 discloses a door closer for controlling the movement of a door leaf. A control device includes a pressure medium-spring-damper unit coupled to an actuating device. When the door moves, a pressure medium is conveyed from a first chamber to a second chamber and vice versa. The pressure medium contains an electrorheological fluid. Electrical means for generating an electric field can change the flow properties of the pressure medium.

[0006] Document EP 0 662 560 A1 discloses a door control system with automatically adjustable damping capability. In one embodiment, a magnet is electronically controlled to control the speed of opening and closing. The damping fluid is a magneto- or electro-rheological fluid.

[0007] DE 10 2011 078 397 B3 discloses a drive for opening and closing a movable leaf of a door with a hydraulic pump. A piston can be driven in a first direction of movement by the hydraulic pump, compressing a closing spring, and in the other, second direction of movement by the closing spring, releasing its tension. A damping device is provided, which at least partially dampens the movement of the piston in the second direction of movement.

[0008] Drive devices for pivoting or sliding leaves in the form of door closers are well known. The main function of a door closer is to improve walking comfort. When a pivoting or sliding leaf is pushed open, energy is stored in an energy storage device. The energy storage device is preferably designed as a spring. When the leaf is released, the energy stored in the energy storage device causes the leaf to return to its original position.

[0009] Although door closers are generally used to close such leaves as doors or windows using stored energy, it is also possible to reverse this drive direction, meaning they can be used to open such leaves. Door closers can be designed as overhead door closers, floor door closers, or as frame or rebated door closers.

[0010] Another function of door closers can be that they are used in conjunction with smoke detectors as a holding device on fire and smoke protection doors.

[0011] In many cases, such a drive device includes a damping device designed to dampen the drive movement of a drive shaft or a leaf element connected to it. The degree of damping is often a function of the leaf's opening value. For example, shortly before reaching a closed position, a closing damper can be implemented first, followed by a so-called final latch to overcome the force of a door lock's latch.

[0012] The damping device is often implemented hydraulically. In this case, the damping device comprises a fluid piston that can be moved within a cylinder, acted upon by the energy storage device in the form of a compression spring. The longitudinal position of the piston generally corresponds to a rotational position of the drive shaft and thus to a degree or opening value of the vane. Different channels with different cross-sections can be incorporated into the cylinder, which is often formed by the housing, in order to implement the various damping functions described above.

[0013] Changes in the damping behavior are then usually only possible by modifying the piston or the housing of the drive device. Even adjustments to environmental conditions are often not feasible.

[0014] Against this background, it is an object of the invention to provide an improved drive device for a wing element movable relative to a frame element and an improved method for influencing a drive movement of such a drive device.

[0015] The above object is achieved according to the invention by a drive device according to claim 1, wherein the drive device mentioned at the outset includes a fluid converter which is coupled to the first fluid volume and which is designed to convert fluid energy into a mechanical converter movement of a converter element, and has an electric machine which is coupled to the converter element and which is designed to convert the converter movement into electrical auxiliary energy and / or into thermal energy.

[0016] Furthermore, the above object is achieved by an electro-hydraulic damping module according to claim 14, specifically for a drive device for a wing element movable relative to a frame element, in particular for forming a drive device of the type according to the invention.

[0017] Finally, the above object is achieved by a method for influencing a drive movement of a drive device of the type according to the invention, comprising the steps of driving the fluid piston so that it acts on a first fluid volume and mechanically moves the converter element so that the electrical machine is driven, wherein the electrical machine converts the converter movement of the converter element into electrical auxiliary energy and / or into braking energy.

[0018] The electric machine, which is driven by the fluid converter, can either be operated as a generator, providing auxiliary electrical power at the electric machine's output terminals. This can be used, for example, to operate an electronic control device and / or other electrical components. Alternatively, the electric machine can be controlled or wired in such a way that it generates braking energy, thus converting the converter movement into heat.

[0019] In other words, the electric machine can be used to brake a drive movement, in particular to dampen a drive movement.

[0020] The degree of damping or the braking energy provided by the electric machine can preferably be variably adjusted depending on the degree of opening of the wing element.

[0021] The fluid converter can convert static fluid energy in the form of pressure into a mechanical converter movement. It is preferred if the fluid converter is designed to convert hydrostatic energy contained in a fluid volume flow into mechanical energy.

[0022] The transducer movement of the transducer element is preferably a rotary movement, but could also be a linear movement.

[0023] If the converter movement is a rotary movement, the converter element is preferably directly coupled to a motor shaft of the electrical machine.

[0024] The sash element can, for example, be a pivoting sash like a rotating sash, but can also be a sliding sash.

[0025] The driving force acts either directly on the sash element, or via a scissor linkage or a slide rail.

[0026] The housing of the drive device may be rigidly connected to the frame element, but is preferably rigidly connected to the wing element.

[0027] The fluid piston is then preferably designed to drive a drive shaft which is connected to such a scissor linkage or to a slide rail linkage.

[0028] Overall, the drive device can therefore be designed as an electro-hydraulically damped drive device. In many cases, intelligent control of hydraulic functions is possible.

[0029] Furthermore, it is possible to integrate the electro-hydraulic damping components into an electro-hydraulic damping module that can be connected to existing drive device housings. Such drive device housings often have a cover at one axial end, instead of which such an electro-hydraulic damping module can be attached to the housing. Consequently, retrofitting existing drive devices such as door closers can be realized relatively easily.

[0030] The electric machine is preferably a direct current machine, in particular a brushless direct current machine, in particular a permanent magnet direct current machine. The rated power of the electric machine is preferably in a range from 25 W to 500 W.

[0031] The task is solved completely.

[0032] According to a preferred embodiment, the electric machine is short-circuited for braking the converter element.

[0033] A short circuit in the terminals of the electrical machine causes self-induction when the motor shaft rotates and consequently a damping of such a drive movement.

[0034] The short circuit can be a fixed short circuit. However, in many cases, the short circuit can also be time-controlled using an electronic control device, for example, through pulse-width modulation.

[0035] The electric machine is connected to an electronic control device which is designed to control the electric machine as a function of at least one environmental state variable.

[0036] The electrohydraulic damping function can be implemented intelligently. The ambient state variable can be a temperature, which can be used to determine the viscosity of a fluid in the housing and, consequently, the degree of required damping. Furthermore, the ambient state variable can be the degree of opening of the vane element, which can be detected, for example, by the rotational position of a drive shaft.

[0037] The electronic control device is therefore preferably connected to at least one sensor which can detect this environmental state variable and output it to the electronic control device.

[0038] Other environmental state variables can be motion signals from motion detectors, light barrier signals, brightness or darkness signals from brightness sensors, etc.

[0039] The fluid converter converts fluid energy into a mechanical converter movement of a converter element. The fluid converter is preferably designed to be leak-free. This means that, for example, a fluid volume flow flowing through the fluid converter can be used almost entirely to convert a converter movement. Leak-free is understood here in particular to mean that the ratio of a leakage fluid volume flow to a useful volume flow is less than 1:5, in particular less than 1:10, preferably less than 1:20.

[0040] According to the invention, the fluid converter is designed to convert a fluid volume flow from the first fluid volume to a second fluid volume into the mechanical converter movement.

[0041] In conventional drive devices, a return flow occurs directly from a first fluid volume to a second fluid volume. This fluid volume flow is then often controlled via valve arrangements.

[0042] In the present case, however, this fluid volume flow is preferably passed through the fluid converter, which uses the fluid volume flow to provide the mechanical converter movement to drive the electric machine.

[0043] Starting from the fluid converter, the fluid volume flow can then flow towards the second fluid volume.

[0044] It is further preferred if the second fluid volume is a low-pressure fluid volume.

[0045] Consequently, a pressure gradient is established between an inlet and an outlet of the fluid converter, which can be used to drive the converter element.

[0046] In many cases, the second fluid volume and the first fluid volume are connected to one another via a check valve arrangement in the fluid piston in order, for example, to allow fluid to flow from the second fluid volume into the first fluid volume during an opening movement of a wing element.

[0047] According to the invention, an output connection of the fluid converter is connected to the second fluid volume.

[0048] The output connection of the fluid converter is connected to the second fluid volume via an electrically controllable valve arrangement.

[0049] The controllable valve arrangement can be formed by conventional and standard available valve elements and does not necessarily have to be formed by bores or channels in the housing of the drive device.

[0050] Preferably, the electrically controllable valve arrangement can be controlled via electromagnets which are controlled by an electronic control device.

[0051] The electrically controllable valve arrangement can be used to set hydraulic damping, which is a function of an opening angle or another environmental condition parameter. This hydraulic damping can be superimposed on the electrohydraulic damping provided by the fluid converter and the electric machine.

[0052] In a preferred variant, the electric machine is arranged such that a motor shaft is aligned parallel to a longitudinal axis of the fluid piston.

[0053] This embodiment can be realized in a radially compact design.

[0054] Alternatively, it is preferred if the electric machine has a motor shaft that is aligned transversely to a longitudinal axis of the fluid piston.

[0055] This often makes it easier to connect the fluid converter to the first fluid volume. Furthermore, an axially compact design can be achieved.

[0056] Overall, it is preferred if the fluid converter is a hydraulic motor that converts the fluid energy into a rotary motion of a fluid converter shaft that is connected to the electric machine.

[0057] The hydraulic motor is preferably designed as a displacement flow meter.

[0058] Preferably, the positive displacement flowmeter is a reciprocating piston flowmeter, a spur gear flowmeter or a screw spindle flowmeter.

[0059] Other flow meter options include flow meters with a swash plate, a rotary vane cell, or an oval gear.

[0060] It is understood that the features mentioned above and those to be explained below can be used not only in the respective combinations specified, but also in other combinations or on their own, without departing from the scope of the present invention. They show. Fig. 1 a schematic representation of a drive arrangement with an embodiment of a drive device according to the invention; Fig. 2 an alternative embodiment of a drive device according to the invention; Fig. 3 is a schematic representation of an embodiment of a fluid converter; and Fig. 4 a further embodiment of a drive device according to the invention with a further embodiment of a fluid converter.

[0061] In Fig. 1, a drive assembly is schematically illustrated and generally designated 10. The drive assembly 10 includes a door frame 12 on which a door leaf 14 can be pivoted, either in an opening direction 16 or in an opposite closing direction 18.

[0062] The door leaf 14 forms a wing element. The wing element can also be formed by a sliding leaf.

[0063] The drive arrangement 10 further includes a drive device 20. The drive device 20 has a housing 22 within which a fluid piston 24 is mounted for axial displacement. For this purpose, the housing 22 can form a cylinder for the fluid piston 24. The fluid piston 24 is aligned along a longitudinal axis 25 and divides an interior of the housing 22 such that a first fluid volume 26 is formed on one axial side of the fluid piston 24 and a second fluid volume 28 is formed on an opposite axial side of the fluid piston 24.

[0064] The fluid piston 24 can be sealed from the housing 22 (or a cylinder inserted therein) by a piston seal 30. The fluid piston 24 separates the first fluid volume 26 from the second fluid volume 28 via the piston seal 30.

[0065] A closing spring 32 is also arranged in the housing 22 of the drive device 20. The closing spring 32 is designed as a helical compression spring and is supported at one end (not shown) on the housing 22. At its other axial end, the closing spring 32 engages the fluid piston 24.

[0066] The fluid piston 24 is connected to a drive shaft 38 via a translation / rotation converter 34. The translation / rotation converter 34 includes a gear 36 that is rotationally fixed to the drive shaft 38, and a rack portion 40 formed on the fluid piston 24.

[0067] When the fluid piston 24 is displaced axially with respect to the drive shaft 38 (which is fixedly mounted in the housing in the axial direction), the drive shaft 38 is rotated accordingly.

[0068] The drive shaft 38 extends out of the housing 22 and is rotationally connected to a coupling member 42 outside the housing 22. The coupling member 42 is part of a slide rail arrangement and is rotationally coupled at its free end to a carriage 44, which is slidably mounted in a slide rail 46.

[0069] In the present case, the housing 22 is fixed to the door frame 12, and the slide rail 46 is fixed to the door leaf 14. However, this assignment can also be reversed.

[0070] Instead of a slide rail arrangement, the drive shaft 38 can be connected to a scissor linkage which is connected to the door leaf 14 (or to the door frame 12 in the reverse arrangement).

[0071] The coupling of the drive shaft 38 to the slide rail arrangement is hereby released such that the closing spring 32 is largely or completely relaxed in a closed position of the door leaf 14. Opening the door leaf 14 in the opening direction 16 results in the fluid piston 24 being displaced axially toward the closing spring 32, so that the latter is tensioned and consequently stores spring energy. As soon as the door leaf 14 is released, the spring force 48 of the tensioned closing spring 32 acts on the fluid piston 24, as shown in Fig. 1 at 48. The fluid piston 24 is thereby displaced axially in the opposite direction (ie away from the closing spring 32), whereby the drive shaft 38 is rotated, as shown in Fig. 1 is shown at 50. As a result, the carriage 44 is displaced in the slide rail 46, as shown at 52, whereby a force is exerted on the door leaf 14 which serves to close the door leaf 14, specifically in the closing direction 18.

[0072] A fluid such as a hydraulic fluid is filled into the housing 22. The hydraulic fluid is typically located in both the first fluid volume 26 and the second fluid volume 28.

[0073] During the opening movement of the door leaf 14, the fluid can flow from the second fluid volume 28 towards the first fluid volume 26 via a check valve arrangement comprising a first check valve 54 and a second check valve 56 formed on the piston 24.

[0074] When the fluid piston 24 moves in the opposite direction, the check valves 54, 56 block, so that the fluid in the first fluid volume 26 is pressurized.

[0075] In prior art drive devices, the first fluid volume 26 and the second fluid volume 28 are connected to each other via a return flow line, which influences the return flow via orifices, valves or the like in order to dampen the closing movement of the door leaf 14.

[0076] In the present case, an electrohydraulic damping module 60 is connected to the housing 22 of the drive device 20. The damping module 60 has a module housing 62, which is sealingly connected to the housing 22 of the drive device 20 via a schematically indicated housing connection 64.

[0077] A fluid converter 66 is accommodated in the module housing 62 in such a way that the fluid converter 66 is in operative connection with the first fluid volume 26 when the module housing 62 is attached to the housing 22.

[0078] The fluid converter 66 includes a converter member 68 and is designed to convert fluid energy into a mechanical converter movement of the converter member 68, in this case into a rotary movement, which in Fig. 1 is indicated at n.

[0079] The fluid converter 66 can be, for example, a hydraulic motor and can in particular be designed as a displacement flow meter.

[0080] The converter element 68 is connected in a rotationally fixed manner to a motor shaft (not further designated) of an electrical machine 70.

[0081] In one variant, the electric machine 70 can be permanently short-circuited so that a rotational movement of the converter element 68 is braked due to self-induction in the electric machine 70.

[0082] In a preferred variant, the electric machine 70 is connected via power electronics (not shown in detail) to an electronic control device 72, which may be configured, for example, as a microcomputer. The control device 72 may be stored in an energy storage device such as a battery, which may also be accommodated in the module housing 62 (not shown).

[0083] However, the control device 72 can also be supplied via auxiliary electrical energy which is generated by a rotation of the electrical machine 70 by means of the converter element 68, wherein the electrical machine 70 in this case operates as a generator.

[0084] The control device 72 is preferably capable of controlling the electric machine in such a way that it provides either maximum braking power or low braking power, or no braking power at all.

[0085] For example, the control device 72 can also place the electric machine 70 into an idle state in which the electric machine 70 can rotate substantially freely.

[0086] The control device 72 is further connected to at least one sensor 74 that detects an ambient state variable. The ambient state variable can be, for example, an ambient temperature of the drive device 20, a rotation angle of the drive shaft 38 (and thus indirectly a degree of opening of the door leaf 14), a movement state detected by a motion sensor, etc.

[0087] The control device 72 is preferably designed to control the electric machine 70 depending on the at least one ambient state variable detected by the sensor 74. The control is preferably carried out intelligently, so that the electrohydraulic damping is optimally adjusted for each operating state and each ambient condition. For example, this can be used to control the closing damping, which sets up increased closing damping shortly before reaching a closed position and provides an end stroke upon reaching the end position (closed position), thus reducing the damping more or less to zero to enable safe engagement with a door lock.

[0088] Furthermore, in a preferred variant, the control device 72 can carry out the damping depending on the temperature, so that the viscosity of the fluid used in the electro-hydraulic damping device is taken into account.

[0089] The electric machine 70, which is driven by the converter element 68, can convert the mechanical kinetic energy of the converter element 68 either into electrical auxiliary energy, as described above, and / or into thermal energy, which is equivalent to braking energy.

[0090] In the following Fig. Figures 2 to 4 describe further embodiments of drive devices and fluid converters, which generally correspond in terms of structure and operation to the drive device 20 described above and the fluid converter 66 used therein. Identical elements are therefore identified by identical reference numerals. The differences are essentially explained below.

[0091] According to the invention, the fluid converter 66 is designed to convert a fluid volume flow into a mechanical converter element movement.

[0092] In Fig. 2 shows a drive device 20' in which the fluid converter 66 is connected to the first fluid volume 26 in such a way that when the fluid piston 24 is displaced away from the closing spring 32, the resulting reduced fluid volume 26 can be emptied via the fluid converter 66. In the drive device 20', the fluid converter 66 is connected to the second fluid volume 28 via a return device 78. More precisely, an output connection 80 of the fluid converter 66 is connected to a return device 78, via which the fluid displaced from the first fluid volume 26 can be guided back to the second fluid volume 28 while the fluid piston 24 moves in the closing direction.

[0093] In Fig. 2 further indicates that an electrically controllable valve arrangement 82 can be arranged in the return device 78. The valve arrangement 82 is controlled by the control device 72.

[0094] A hydraulic damping function is implemented by means of the valve arrangement 82. The hydraulic damping function of the valve arrangement 82 can be superimposed on the electrohydraulic damping function of the damping module 60'.

[0095] In Fig. 3 shows an embodiment of a fluid converter 66" which is designed as a hydraulic motor in the form of a displacement flow meter, more precisely in the form of a reciprocating piston flow meter.

[0096] At least one hydraulic piston 88 is displaceably mounted on a fluid converter housing 90. An inflow 92 from the first fluid volume 26 flows into the fluid converter housing 90. Furthermore, an outflow 94 flows out of the fluid converter housing 90 towards the return device 78. The respective hydraulic piston 88, from which in Fig. 3, which are displaceable in four directions offset by 90°, is connected to a connecting rod, which in turn is connected to a crankshaft 96. The crankshaft 96 forms a converter element 68, which is set in rotation due to the schematically indicated fluid volume flow from inlet 92 to outlet 94. The crankshaft 96 is preferably connected to a motor shaft of the electric machine 70 and is rotatable about an axis that is, for example, concentric with the longitudinal axis 25 of the fluid piston 24.

[0097] With several hydraulic pistons 88, as in Fig. 3, these pistons are hydraulically connected so that they drive the crankshaft 96 via respective connecting rods. By rotating the crankshaft 96, the inactive (pressurized) hydraulic pistons 88 are each pulled into an active area. This allows the hydraulic pistons to be activated sequentially. The crankshaft 96 is consequently driven by the fluid volume flow. The hydraulic pistons can be sealed very tightly to the fluid converter housing 90, which allows for low leakage rates. In this way, even very low fluid flows can be well controlled.

[0098] In Fig. 4 shows a further embodiment of a drive device 20''' in which a fluid converter 66''' is used. The fluid converter 66''' is designed as a hydraulic motor, specifically as a displacement flow meter in the manner of a spur gear flow meter. The fluid converter 66''' has a first gear 104, which meshes with a second gear 106. The gears 104, 106 have a straight spur gearing. When fluid is guided from the first fluid volume 26 to an engagement area between the gears 104, 106, as shown in Fig. 4 at 92''', the gears 104, 106 are rotated by the dynamic pressure and thus drive a crankshaft 96''', which forms a converter element 68'''. The electric machine connected to the crankshaft 96'''' can delay the rotation of the gears 104, 106 and thus directly control the fluid flow.

[0099] The leakage rates of the fluid converter 66''' are slightly higher than those of the fluid converter 66'' of the Fig. 3.

[0100] Overall, the disclosed drive devices can be used to implement an electrohydraulic brake based on a hydraulic fluid converter that redirects a fluid flow in the drive device 20 into a rotational movement of a converter element 68 with as little leakage as possible. By influencing the rotational movement, the fluid flow in the door closer can be controlled.

[0101] To control the displacement process, in which a fluid flow is displaced from the first fluid volume, the electric machine 70 brakes the converter element 68 and consequently the movement of the door leaf 14. The electric machine preferably acts in a short circuit.

[0102] The electronic control device 72 also makes it possible to close the door leaf 14 in a controlled manner by controlling the electric motor 70 to provide different resistance or braking torques. Specific speed profiles can be approached or followed depending on the ambient conditions. Reference symbol lists 10 Drive arrangement 12 door frames 14 door leaves 16 Opening direction 18 Closing direction 20 Drive device 22 housings 24 fluid pistons 25 Longitudinal axis 26 first fluid volume 28 second fluid volume 30 piston seal 32 closing spring 34 translation / rotation converters 36 gear 38 Drive shaft 40 rack section 42 coupling link 44 sleds 46 Slide rail 48 spring force 50 Coupling link movement 52 Carriage movement 54 first check valve 56 second check valve 60 damping module 62 module housings 64 Housing connection 66 fluid converters 68 converter element 70 electric machine 72 Control device 74 Sensor 78 Return device 80 output connector 82 Valve arrangement 88 hydraulic pistons 90 fluid converter housing 92 inflow 94 Drain 96 crankshaft 98 connecting rods 100 eccentric offset 104 first gear 106 second gear

Claims

[1] Drive device (20) for a wing element (14) movable relative to a frame element (12), such as a door, a window, a flap, in particular in the form of a door closer, with - a housing (22) in which a fluid piston (24) is mounted axially displaceably, which is designed to transmit a driving force (48) and which acts on a first fluid volume (26), - a fluid converter (66) coupled to the first fluid volume (26) and designed to convert fluid energy into a mechanical converter movement (n) of a converter member (68), and - an electrical machine (70) which is coupled to the converter element (68) and which is designed to convert the converter movement(s) into electrical auxiliary energy and / or into thermal energy, wherein the fluid converter (66) is designed to convert a fluid volume flow from the first fluid volume (26) to a second fluid volume (28) into the mechanical converter movement(s), wherein an output connection (80) of the fluid converter (66) is connected to the second fluid volume (28) via an electrically controllable valve arrangement (82), wherein the electric machine (70) and the valve arrangement (82) are connected to an electronic control device (72) which is designed to control the electric machine (70) and the valve arrangement (82) as a function of at least one environmental state variable, wherein a hydraulic damping function which is a function of an opening angle or another environmental state parameter can be set up by means of the electrically controllable valve arrangement (82). [2] Drive device according to claim 1, wherein the electric machine (70) is short-circuited for braking the converter element (68). [3] Drive device according to one of claims 1-2, wherein the fluid converter (66) is designed to be leak-free. [4] Drive device according to claim 1, wherein the second fluid volume (28) is a low-pressure fluid volume. [5] Drive device according to one of claims 1-4, wherein the electric machine (70) has a motor shaft which is aligned parallel to a longitudinal axis (25) of the fluid piston (24) or has a motor shaft which is aligned transversely to a longitudinal axis (25) of the fluid piston (24). [6] Drive device according to one of claims 1-5, wherein the fluid converter (66) is a hydraulic motor (66) which converts the fluid energy into a rotary movement of a fluid converter shaft (68) connected to the electric machine (70). [7] Drive device according to claim 6, wherein the hydraulic motor (66) is designed as a displacement flow meter (66). [8] Drive device according to claim 7, wherein the positive displacement flowmeter (66) is a reciprocating piston flowmeter, a spur gear flowmeter or a screw spindle flowmeter. [9] Drive device according to one of claims 1-8, wherein - the fluid piston (24) acts via a translation / rotation converter (34) on a drive shaft (38) by means of which the wing element (14) can be driven, and / or wherein - a closing spring (32) acts on the fluid piston (24) in such a way that the closing spring (32) is tensioned when the wing element (14) moves in a first direction (16), and can release the stored spring energy via the fluid piston (24) in order to drive the wing element (14) in a second direction (18). [10] Electro-hydraulic damping module (60) for a drive device for a wing element (14) movable relative to a frame element (12), in particular for forming a drive device (20) according to one of claims 1-9, with a module housing (62), a hydraulic fluid converter (66) which is designed to convert fluid energy into a mechanical converter movement(s) of a converter element (68), and an electric machine (70) which is coupled to the converter element (68) and which is designed to convert the converter movement(s) into auxiliary electrical energy and / or thermal energy, wherein the module housing (62) can be connected to a housing (22) of the drive device (20) in such a way that a fluid volume (26) in the housing (22) of the drive device (20) is in operative connection with the fluid converter (66). [11] Method for influencing a drive movement (50) of a drive device (20) according to one of claims 1-9, comprising the steps of driving the fluid piston (24) so that it acts on a first fluid volume (26) and mechanically moves the converter member (68) so that the electrical machine (70) is driven, wherein the electrical machine (70) converts the converter movement(s) of the converter member (68) into electrical auxiliary energy and / or into braking energy.

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