DRIVE DEVICE FOR MOVING A WING

Description

[0001] The invention relates to a drive device for moving a wing with the features of the preamble of claim 1.

[0002] Drive devices can be used to move a door leaf, with a leaf being understood in particular to be a door or window leaf. The door leaf is the movable part of a door, also commonly referred to as a door leaf. Such drive devices for moving a leaf are known. Such drive devices comprise a drive unit and a gear transmission coupled to the drive unit. The drive unit is coupled to a door closer via the gear transmission, so that a door leaf can be closed by the door closer and opened by the electric motor when necessary - for example, in the event of a fire to extract smoke and heat. The gear transmission is provided exposed on an outer surface of the drive unit and therefore takes up additional installation space.

[0003] The drive systems mentioned above are typically installed directly on the leaf to be moved or on a door or window frame. Especially when mounted on the door or window frame, the available installation space is very limited.

[0004] WO 2013 / 169888 A1 discloses such a drive device.

[0005] Against this background, the task arises to enable a compact design of the drive device.

[0006] The object is achieved by a drive device for moving a leaf, in particular a door leaf or a window leaf, having the features of claim 1. Advantageous developments of the drive device are specified in the dependent claims, the description, and the figures. Features and details described in connection with the drive device according to the invention also apply in connection with the method according to the invention and / or the use according to the invention, and vice versa.

[0007] The description further characterizes and specifies the invention, particularly in connection with the figures.

[0008] Particularly advantageously, a drive device for moving a leaf, in particular a door leaf or a window leaf, is provided. The drive device comprises an electric machine comprising one, in particular a single, stator and one, in particular a single, rotor rotatable about a machine axis, and having a gear mechanism coupled to the electric machine. The gear mechanism has a first gear element rotatable coaxially with the machine axis. In particular, the first gear element can be connected to the rotor in a rotationally fixed manner.

[0009] This design is advantageous in terms of saving installation space in the radial direction of the electric machine.

[0010] The term axes, in particular as in the case of wing axis, output axis, machine axis, rotary axis, refers to virtual axes which are fundamentally not limited in their extension.

[0011] According to the invention, the transmission has a second transmission element which is operatively connected to the first transmission element, wherein an axis of rotation of the second transmission element runs in a space between the machine axis and an outer circumferential surface of the rotor which is virtually extended in the axial direction of the machine or an outer circumferential surface of the stator which is virtually extended in the axial direction of the machine, in particular parallel to the machine axis.

[0012] This design is advantageous in terms of further saving space in the radial direction of the electric machine.

[0013] In particular, each axis of rotation of each gear element can run parallel to the machine axis.

[0014] In particular, the first gear element can be arranged entirely in a construction space, wherein the construction space is limited by an outer surface of the rotor which is virtually extended in the axial direction of the machine.

[0015] It may be preferred that the first transmission element and the second transmission element or the entire transmission is arranged completely in one installation space, wherein the installation space is limited by an outer surface of the rotor that is virtually extended in the axial direction of the machine or by an outer surface of the stator that is virtually extended in the axial direction of the machine.

[0016] It may be preferred that the drive device comprises a machine housing and / or a transmission housing and / or a motor-transmission housing. It may also be preferred that the machine is arranged at least partially within the machine housing. It may be particularly preferred that the transmission is arranged at least partially within the motor-transmission housing.

[0017] The wording - within the housing - means that the elements are arranged at least partially, in particular completely, in the space formed by the housing.

[0018] Alternatively or cumulatively, the machine and / or the transmission can be arranged at least partially, in particular completely, within the engine-transmission housing.

[0019] This design is advantageous with regard to the modularity of the drive device, i.e. the modules and / or elements that can be separated from one another.

[0020] In particular, the machine housing and / or the gear housing can be formed from the motor-gear housing.

[0021] In particular, the machine housing and / or the gearbox housing can have prefabricated mounting points for positive and / or non-positive and / or material-to-material connection. Furthermore, the machine housing and / or the gearbox housing can be formed as a single piece.

[0022] In particular, the machine housing and / or the motor-gearbox housing and / or a closer housing can each have one or more prefabricated receiving points for a positive and / or non-positive and / or materially bonded connection to the electric machine and / or the gearbox. In particular, one or more such connections can be designed in the form of at least one screw connection and / or a pin connection and / or a press fit and / or a T-slot and / or a snap connection.

[0023] This design is advantageous in terms of a simple and easy-to-assemble construction.

[0024] It may be preferred that the transmission is designed as a gear transmission, in particular as a spur gear transmission and / or planetary gear transmission, or as an eccentric transmission.

[0025] As a planetary gear, the gear can comprise a sun gear that is rotationally fixed to the rotor, particularly a single piece, a plurality of planet gears mounted around the sun gear on a planet carrier, and a ring gear meshing with the planets. The ring gear can be rotatably mounted and form the power output of the planetary gear, with the planet carrier being stationary. Alternatively, the planet carrier can be rotatably mounted and form the power output of the planetary gear, with the ring gear being stationary. The terms planet and planet gear are used synonymously.

[0026] In particular, the transmission can be designed as a combination of a planetary gear and a spur gear. The ring gear of the planetary gear can have external teeth and act as a spur gear, in particular, wherein the ring gear engages with a closer gear of a closer module and / or an interface element, and / or wherein the ring gear forms the interface element.

[0027] As an eccentric gear, the gear can be designed as a planetary eccentric gear and / or a wave gear.

[0028] It may further be preferred that the transmission be designed as a planetary transmission, with the first transmission element being designed as a sun gear and at least one second transmission element being designed as a planetary gear. It may be preferred that the transmission have at least one Wolfrom stage.

[0029] As a planetary gear, the gear can further comprise at least one Wolfrom stage. In a preferred embodiment of such a Wolfrom stage, the planetary gear has a first gear stage and a second gear stage, wherein the first gear stage comprises the sun gear, a plurality of first planets fastened to a planet carrier and driven by the sun gear, and a first stationary ring gear. The second gear stage comprises a second rotatable ring gear and second planets that are rotationally fixed to the first planets, in particular integrally formed. The second planets drive the second ring gear. In particular, the second ring gear can form the power output of the planetary gear.

[0030] Preferably, the transmission may comprise the first ring gear which is in engagement with the planetary gear, wherein the planetary gear is rotatably mounted on a planetary carrier, wherein the planetary carrier is rotatably mounted on the sun gear or on the rotor which is connected in a rotationally fixed manner to the sun gear.

[0031] In particular, the first ring gear may have a first number of teeth and the transmission may have a second ring gear with a second number of teeth, wherein the difference between the first and the second number is a value that is less than 5, preferably less than 2, particularly preferably 1.

[0032] According to the invention, the drive device has an output shaft rotatable about an output axis for connection, in particular in a rotationally fixed manner, to a lever, wherein the output axis runs parallel or coaxially to the machine axis.

[0033] The lever serves to form the connection between the drive device and the leaf or a frame, whereby the drive device can be mounted either on the frame or on the leaf. Within the meaning of the invention, the term "frame" also encompasses a door frame or window frame. In particular, the lever can be designed such that a voltage supply for the electric motor and / or at least one control signal for the electric motor can be transmitted via the lever to a motor-gearbox module, in particular to the electric motor.

[0034] According to the invention, the drive device has a closer module with a mechanical energy storage device.

[0035] In particular, the mechanical energy storage device can comprise one or more compression springs and / or tension springs connected to a linkage carriage. The linkage carriage serves to create an operative connection between a transmission element and the mechanical energy storage device of the closer module. This allows the closer module to ensure safe, purely mechanical, i.e., non-energized closing even in an emergency, such as a fire.

[0036] According to the invention, the drive device comprises the closer module with the mechanical energy storage device and a transmission element for translating a linear movement of the energy storage device into a rotary movement of the transmission element. In particular, the transmission element can be designed as a cam disk. Depending on requirements, the cam disk can be symmetrical or asymmetrical. Furthermore, the cam disk can be designed as a cam disk with a stroke, in particular a heart-shaped one.

[0037] In particular, the closer module can be arranged at least partially, in particular completely, in a space between the electric machine and a main closing edge of the leaf.

[0038] According to the invention, the closer module comprises a closer gearwheel operatively connected to the energy storage device by means of the transmission element.

[0039] It may be preferred that the closer wheel is arranged coaxially, in particular rotationally fixed, with the transmission element. Preferably, the transmission element and the closer wheel can be connected in a form-fitting and / or non-positive and / or materially bonded manner, particularly preferably being formed in one piece. In particular, the output shaft and a rotational axis of the transmission element and / or the rotational axis of the closer wheel can be spaced apart from one another, in particular parallel to one another.

[0040] On the one hand, this means that the output shaft and the transmission element do not rotate around the same axis and can be arranged in different positions, especially in a modular configuration. On the other hand, the parallel alignment reduces energy losses and simplifies assembly.

[0041] The closing wheel and the transmission element can be mounted individually or jointly for rotation about a common axis of rotation. Furthermore, the closing wheel and the transmission element can be mounted individually or jointly for rotation on a fixed axle body by means of one or more pivot bearings, in particular roller bearings or plain bearings, in particular needle bearings or ball bearings. The axle body is not rotatable.

[0042] In particular, the transmission element and the closing wheel can be connected to one another in a force-locking and / or form-locking and / or material-locking manner in a rotationally fixed manner or can be formed in one piece.

[0043] This design is advantageous in terms of saving space in axial extension, in that the bearings can be arranged surrounded by the transmission element and / or by the closer wheel.

[0044] In particular, the transmission element and / or the closing wheel can each be rotatably mounted on the axle body individually or jointly by means of at least one rotary bearing, preferably a rolling bearing or a plain bearing, in particular a needle bearing or a ball bearing.

[0045] In particular, the closer module can have a closer housing. In particular, the axle body can be fixed to the closer housing.

[0046] It may be preferred that the gear has a transmission ratio as a quotient of the speed of the rotor as a dividend and the speed of the closing wheel or the speed of the transmission element less than 125, preferably less than 100, particularly preferably less than 75.

[0047] Preferably, the drive device may comprise at least one interface element for forming an operative connection between the electric machine and the closer module. In particular, the interface element may comprise at least one gear.

[0048] By means of the interface element, a torque can be transmitted from the rotor to the closer module and / or from the closer module to the rotor. The interface element can be formed by at least one gear element of the gear system, in particular a ring gear, and / or by at least one element of the closer module, in particular by the closer gear and / or by an additional element. The interface element can be designed as a single-part or multi-part unit. The interface element is operatively connected, in particular engaged, with the gear system and operatively connected with the energy storage device.

[0049] In particular, the interface element can be used to transmit torque from the output shaft to the closer module and / or from the closer module to the output shaft. The interface element can be formed by at least one gear element of the gear unit and / or by at least one element of the closer module and / or by an additional element. The interface element can be designed as a single or multi-part unit.

[0050] In particular, the motor-gearbox housing can comprise a first opening, and the closer housing can comprise a second opening. The motor-gearbox housing and the closer housing can be arranged relative to one another in such a way that the closer module, in particular the energy storage device, and the transmission, in particular an output shaft, are operatively connected to one another by means of the interface element through the first and second openings.

[0051] In particular, the walls of the respective housings, which comprise the first and the second opening, can be designed such that the motor-gearbox housing and the closer housing can be mounted flush with one another.

[0052] In particular, the interface element can extend into the motor-gearbox housing and / or the closer housing. In particular, the interface element can extend into the space formed by the respective housing.

[0053] In particular, the motor-gearbox housing can be connected to the closer housing in a force-fitting and / or form-fitting and / or material-fitting manner. Such a connection can be achieved, for example, by means of at least one screw connection and / or a pin connection and / or a press fit and / or a T-slot and / or a snap connection.

[0054] It may be preferred that the drive device comprises the motor-gearbox housing and the closer housing, wherein the machine and the gearbox are arranged at least partially within the motor-gearbox housing, wherein the energy storage device is arranged within the closer housing, wherein the electric machine and the energy storage device are operatively connected by means of the interface element. It may be preferred that the interface element protrudes through a first opening in the motor-gearbox housing into the motor-gearbox housing and / or through a second opening in the closer housing into the closer housing.

[0055] It may be preferred that the electrical machine is designed as an axial flux machine.

[0056] This configuration is advantageous in terms of a compact design combined with high performance. This configuration is advantageous in terms of saving installation space. It may further be preferred for the stator to have a stator base, in particular a plate-shaped one, and a plurality of stator teeth, in particular protruding from the stator base in the axial direction. It may be particularly preferred for a coil to be wound at least directly or indirectly around one, in particular around each, stator tooth.

[0057] The electric machine, also known as an axial flux machine, can be designed as a motor and / or generator. As a motor, the axial flux machine can generate a rotary motion, in particular a torque, from electrical energy. As a generator, the axial flux machine can generate electrical energy from a rotary motion, in particular from a torque.

[0058] In an axial flux machine, the magnetic flux is generated primarily parallel to the machine axis of the electric machine. The axial flux machine has a short axial length compared to other machine types. The axial length refers to a length in a direction parallel to the machine axis. The use of an axial flux machine therefore enables a reduction in the dimensions of the electric machine in the axial direction. This enables a compact design of the motor-gearbox module. In particular, the axial flux machine can be a brushless DC machine, especially a so-called BLDC machine. Such a machine is constructed like a three-phase synchronous machine with excitation by permanent magnets.

[0059] The machine axis refers to the axis of rotation around which a rotor of the electrical machine rotates.

[0060] In particular, the electric machine, especially as a motor, can have a ratio of the maximum torque to the axial extent of the machine that is greater than 30 Nm / m, preferably greater than 100 Nm / m, particularly preferably greater than 200 Nm / m. The axial extent refers to the extent of the machine parallel to the machine axis. In particular, this ratio can be greater than 50 Nm / m, preferably greater than 70 Nm / m, particularly preferably greater than 150 Nm / m. In particular, the electric machine can have a torque density, i.e. torque to motor volume, of greater than or equal to 6000 Nm / m^3, preferably of greater than or equal to 15000 Nm / m^3 and particularly preferably of greater than or equal to 20000 Nm / m^3 and / or a torque constant of greater than or equal to 0.1 Nm / A, preferably of greater than or equal to 0.2 Nm / A and particularly preferably of greater than or equal to 0.3 Nm / A.These electric motor designs enable a compact gearbox design and such small gear ratios, while still enabling reliable, particularly assisted, opening and / or closing of the sash. The overall drive system is compact.

[0061] In particular, the electric machine in the embodiment as an axial flux machine can have a ratio between the extension of at least one stator tooth in the axial direction of the electric machine as a dividend and the extension of the stator base in the axial direction of the electric machine, wherein the ratio is greater than or equal to 2, in particular greater than or equal to 3, in particular greater than or equal to 4, in particular greater than or equal to 5, in particular greater than or equal to 6.

[0062] The term "coil" refers to an electrical conductor with at least one winding. The electrical conductor can be embodied as a wire and / or insulated strip, in particular by means of a coating, preferably an insulating varnish. For this purpose, the conductor can have an insulating coating, in particular an insulating varnish. In particular, the coil can be designed as a potted coil, with individual windings of the coil being electrically insulated from one another by means of a potting material.

[0063] In particular, the stator may have one or more coils, preferably 7 to 16, particularly preferably 10 to 14 coils, wherein the coil or coils of the stator are arranged such that a magnetic flux can be generated by the coil or coils in a direction parallel to the machine axis.

[0064] In particular, a circuit board can be arranged in a space between the stator base and the rotor. In particular, at least one, in particular each, of the coils can be electrically connected to the circuit board. In particular, the coil can be soldered to the circuit board. In particular, at least one, in particular each, coil can be integrated into or on the circuit board, in particular arranged in the material of the circuit board.

[0065] A circuit board, in the sense of the invention, is a plate-shaped, particularly populated, element for conducting electrical energy. The circuit board can be designed as a printed circuit board. The terms are used synonymously below. The circuit board can comprise multiple layers and / or be made of plastic and / or be flexible. In particular, the circuit board can be designed as a solid aluminum circuit board. This design is advantageous in terms of good thermal conduction properties.

[0066] In particular, the printed circuit board can extend at least partially over an installation space which is delimited by a lateral surface of the stator which is extended in the axial direction of the electrical machine and / or by a lateral surface of the rotor which is extended in the axial direction of the electrical machine.

[0067] In particular, the circuit board can be arranged parallel to the stator base.

[0068] In particular, the stator can have the stator base, in particular a plate-shaped one, and a plurality of stator teeth protruding from the stator base in the axial direction of the machine. The printed circuit board is arranged in a first plane, in particular parallel to the stator base, wherein the first plane lies in a space between the stator teeth and the rotor. In particular, the printed circuit board can rest on the stator teeth.

[0069] In particular, the circuit board can be arranged in an air gap between the stator and the rotor.

[0070] In particular, the stator can have a plurality of stator teeth projecting from the stator base in the axial direction of the electrical machine, wherein the circuit board is arranged in a second plane, in particular parallel to the stator base, wherein the second plane is penetrated by at least one, in particular each stator tooth, of the stator.

[0071] This design is advantageous in terms of further tree savings in the axial direction.

[0072] In particular, the stator teeth can protrude from a common surface of the stator base. In particular, the stator base can be connected to at least one, in particular each, stator tooth in a form-fitting and / or force-fitting and / or material-fitting manner, or can be formed in one piece.

[0073] In particular, the circuit board can have one or more openings, in particular a number of openings corresponding to the number of stator teeth, through which the stator teeth pass.

[0074] The shape of the respective openings can correspond to the surface of the respective teeth parallel to the plate. In particular, the plate can comprise a single opening for several or all of the teeth.

[0075] In particular, the rotor can comprise at least one permanent magnet, wherein the permanent magnet is arranged along a virtual circle around the machine axis and spans a first angular range. In particular, the stator can comprise the stator base with at least one stator tooth protruding from the stator base, in particular in the axial direction of the axial flux machine, wherein the stator tooth is arranged along a virtual circle around the machine axis and spans a second angular range, wherein the ratio of the first angular range as a dividend to the second angular range is in the range from 1.1 to 1.6, preferably in the range from 1.2 to 1.5, particularly preferably in the range from 1.3 to 1.4. In the case of multiple teeth and / or magnets, each tooth can have the above-mentioned ratio to each magnet.Alternatively or cumulatively, with several magnets and teeth, a summed range, i.e. a ratio, can be in a range from 1.3 to 1.9 or even from 1.5 to 1.8.

[0076] The term circle around machine axis means that the machine axis forms the center of the circle.

[0077] In this case, a surface of the stator tooth, in particular of each stator tooth, running parallel to the stator base can be designed such that the surface widens in the radial direction of the stator, starting from the machine axis. Alternatively or cumulatively, a surface of the permanent magnet, in particular of each permanent magnet, running parallel to the stator base can be designed such that the surface widens in the radial direction of the rotor, starting from the machine axis. In this way, the specified ratio of the first angular range as a dividend to the second angular range can be kept constant along the radial course of the stator. In particular, the surface of the stator tooth, in particular of each stator tooth, running parallel to the stator base can remain constant along the axial course of the stator tooth.

[0078] In particular, at least one, in particular each, permanent magnet can be plate-shaped. In particular, the rotor can have a rotor plate, in particular a rotor disk. Furthermore, at least one, in particular each, permanent magnet can protrude from the rotor plate of the rotor in the axial direction of the machine, in particular in the direction of the stator. In particular, the rotor plate can have one or more recesses, in particular a number of recesses corresponding to the number of permanent magnets, with a permanent magnet being located in each recess. In particular, the shape of the recess, in particular of each recess, can correspond to the shape of the inserted permanent magnet. This serves to secure the permanent magnets on the rotor, in particular on the rotor plate.

[0079] In particular, the ratio between the number of permanent magnets as dividend and the number of windings can be in a range of 1.0 to 1.6, preferably in a range of 1.2 to 1.4, particularly preferably 4 / 3, in particular 1.1; in particular 7 / 6

[0080] In particular, the stator base can have a bearing mount for accommodating a rolling bearing or a plain bearing. In particular, the bearing mount can be arranged on a fixed bolt that is positively and / or non-positively and / or materially connected to the stator or formed as a single piece.

[0081] This design is advantageous in terms of a compact construction in the axial direction.

[0082] In particular, the bearing holder can have a bearing support surface, in particular annular, which is connected to the stator base in a form-fitting and / or force-fitting and / or material-fitting manner or is formed integrally with the stator base.

[0083] The bearing support surface refers to a surface on or against which the bearing can rest.

[0084] In particular, the bearing holder can be cylindrical, in particular hollow cylindrical.

[0085] In particular, the stator may have a fixed bolt, wherein the bolt is connected to the stator in a form-fitting and / or force-fitting and / or material-fitting manner or is formed in one piece and comprises the bearing receptacle.

[0086] In particular, the drive device can comprise a motor-gearbox module having an electric machine, wherein the electric machine has the, in particular, single stator and the, in particular, single rotor rotatable about a machine axis. The drive device also comprises a gearbox, wherein the drive device has an output shaft rotatable about an output axis. In particular, the gearbox can have a transmission ratio as a quotient of the rotational speed of the rotor as a dividend and the rotational speed of the output shaft, wherein the transmission ratio is less than 125, preferably less than 100, particularly preferably less than 75.

[0087] By selecting a gear ratio of less than 125, preferably less than 100, and particularly preferably less than 75, a compact design of the gear unit is possible, resulting in a compact overall drive system while also reducing friction. This also increases the efficiency of the gear unit, as energy losses can be reduced with low gear ratios.

[0088] In particular, the motor-gearbox module can have a motor-gearbox housing. In particular, the electric machine can be arranged entirely within the motor-gearbox housing. In particular, the output shaft can be arranged at least partially, preferably entirely, within the motor-gearbox housing.

[0089] In particular, the drive device can be used with a swing door drive or a sliding door drive or a revolving door drive.

[0090] With a swing door drive, a door leaf is pivoted from a closed position, in which the leaf rests against a frame or casing, to an open position about a leaf axis by means of the drive device, with the torque being transmitted from the output shaft of the drive device to the door or casing by means of a lever. The drive device can be mounted on the leaf, whereby a guide rail can be arranged on the frame, or on the casing, whereby a guide rail can be arranged on the leaf. In addition to the drive device, the swing door drive can also comprise the lever and / or the guide rail and / or the leaf. Particularly when used on fire-resistant leaves, the drive device can have a closer module. In the event of a fire, the closer module ensures that the fire-resistant leaf closes, in particular without the need for manual operation.

[0091] In a sliding door drive, a leaf is translated along a guide rail by means of the drive mechanism. The leaf can be connected to a carriage running in the guide rail. In addition to the drive mechanism, the sliding door drive can comprise the leaf and / or the guide rail and / or the carriage.

[0092] In a revolving door drive, two or more door leaves mounted on a vertical central axis, which rotate in a circular rotating housing, are rotated by the drive mechanism. In addition to the drive mechanism, the revolving door drive can comprise the rotating housing and / or the leaves.

[0093] The terms "axis," "vane axis," and "output axis" refer to virtual axes, especially rotational axes, whose extent is essentially unlimited. The "machine axis" refers to the axis of rotation around which the rotor of the electric machine rotates.

[0094] In particular, a control module can be arranged in or on the closer module.

[0095] In particular, the motor-gearbox module and / or the closer module and / or the control module can be arranged at least partially, in particular completely, within a higher-level casing, i.e., within a higher-level housing. The terms "higher-level housing" and "higher-level casing" are used synonymously below.

[0096] In particular, the control module can have a control housing. The control module can be arranged entirely within the control housing. In particular, the control housing can be connected to the higher-level housing and / or to the motor-gearbox housing and / or to the closer housing in a force-fitting and / or form-fitting and / or material-fitting manner. In particular, one or more such connections can be designed in the form of at least one screw connection and / or a pin connection and / or a press fit and / or a T-slot and / or a snap connection.

[0097] In particular, the drive device, preferably the electric motor and / or the transmission and / or the energy storage device, can be designed such that, by means of the drive device, in particular by means of a machine torque, a movement of the wing can take place on the wing, in particular fully automatically, without any manual force exerted by a person, in particular without any manual torque exerted by a person. However, the movement of the wing can be accelerated by the manual force exerted by the person, in particular the manual torque, on the wing.

[0098] The movement of the wing here means an opening movement and / or a closing movement of the wing.

[0099] Alternatively, the drive device, preferably the electric machine and / or the transmission and / or the energy storage device, can be designed as an auxiliary drive in such a way that a movement of the wing is only carried out if, at least at one point in time during the movement of the wing, in particular at the beginning of the movement, in addition to a force generated by the drive device, in particular a machine torque, a manual force exerted by a person, in particular a manual torque exerted by a person, is exerted on the wing.

[0100] In particular, the motor-gearbox housing and the closer housing can each be cuboid-shaped. The motor-gearbox housing and / or the closer housing can be cuboid-shaped, i.e., with four adjacent walls, with the adjacent walls being orthogonal to each other to enable mounting on both sides. In this way, the drive device can be mounted on both sides.

[0101] Further details and advantages of the invention will be explained below with reference to the exemplary embodiments shown in the figures. Herein: Fig. 1 shows an embodiment of a drive device according to the invention in a schematic sectional view; Fig. 2 shows the drive device from Figure 1as a detail in a perspective view; Fig. 3 a transmission element with a closing wheel in a plan view, Fig. 4 another embodiment of a drive device with planetary gear, Fig. 5 the drive device from Figure 4 with removed ring gear, and Fig. 6 an axial flux machine in a basic representation in section.

[0102] In the different figures, identical parts are always provided with the same reference symbols, which is why they are usually only described once.

[0103] Figure 1 shows a drive device 1 for moving a wing, in particular a door wing or a window sash.

[0104] The drive device 1 comprises a motor-gearbox module 3, which has a motor-gearbox housing 4, an electric machine 6 with a machine axis X1, and a gearbox 7 with an output shaft 8 rotatably mounted about an output axis X2 for connection to a lever 9. The drive device 1 also comprises a closer module 11, which has a closer housing 12 and a mechanical energy storage device 13. The drive device 1 comprises an interface element for forming an operative connection between the motor-gearbox module 3 and the closer module 11.

[0105] The transmission 7 has a transmission ratio as a quotient of the rotational speed of the rotor as a dividend and the rotational speed of the output shaft, wherein the transmission ratio is less than 125, preferably less than 100, particularly preferably less than 75.

[0106] The lever 9 serves to form a connection between the drive device 1 and the wing, i.e., with the exemplary door wing or window sash or with a frame, wherein the drive device 1 can be mounted either on the frame or on the wing. The term frame, within the meaning of the invention, also includes a door frame or window frame. In particular, the lever 9 can be designed such that a voltage supply for the electrical machine 6 and / or at least one control signal for the electrical machine 6 can be transmitted via the lever 9 to the motor-gearbox module 3, in particular to the electrical machine 6 and / or to the control module 26. The lever 9 is guided in a guide rail 2, which, in the illustrated embodiment, would be mounted on a frame (not shown).

[0107] As in the Figure 1 and 2As can be clearly seen, the output shaft 8 is arranged in a space between the machine axis X1 of the electric machine 6 and the energy storage device 13.

[0108] The motor-gearbox housing 4 has a first opening 16, while the closer housing 12 has a second opening 17. As in Figure 1 As can be seen, the motor-gearbox housing 4 and the closer housing 12 are arranged relative to one another in such a way that the closer module 11, in particular the energy store 13, and the gear box 7, in particular the output shaft 8, are operatively connected to one another by means of the interface element through the first opening 16 and the second opening 17.

[0109] The motor-gearbox module 3 and / or the closer module 11 are each arranged at least partially, in particular completely, within a higher-level housing 5. The motor-gearbox housing 4 is connected to the higher-level housing 5 and / or to the closer housing 12 in a force-fitting and / or form-fitting and / or material-fitting manner. The closer housing 12 is connected to the higher-level housing 5 in a force-fitting and / or form-fitting and / or material-fitting manner. One or more such connections are embodied, for example, in the form of at least one screw connection.

[0110] In the Figures 1 and 2 It can be seen that the cutting axis X2 is parallel to the machine axis X1.

[0111] The closer module 11 has a transmission element 18 for translating a linear movement of the energy storage device 13 into a rotational movement of the transmission element 18 about a rotational axis X3 of the transmission element 18. As shown by way of example in Figure 1 The output axis X2 and the rotational axis X3 of the transmission element 18 are spaced apart from each other and run parallel to each other. The transmission element 18 is designed as a cam disk, specifically a heart-shaped cam disk, and is rotatably mounted with a closing wheel 10.

[0112] For example, the mechanical energy storage device 13 is designed as a compression spring. The compression spring is connected via a link carriage 27 to the transmission element 18 for translating the linear movement of the mechanical energy storage device 13 into a rotary movement of the transmission element 18. The link carriage 27 has sliding elements 21, which are Figure 2 The flap carriage 27 is in Figure 4recognizable.

[0113] The closing wheel 10 is arranged coaxially and rotationally fixed to the transmission element 18 for translating the linear movement of the energy storage device 13 into a rotational movement of the transmission element 18.

[0114] The gear 7 has an output gear 22, in particular an output gear, which is coaxial with the output shaft 8 and non-rotatable, wherein the output gear 22 is in engagement with the closing gear 10.

[0115] The interface element is in the embodiment to the Figures 1 and 2 formed by the output gear 22.

[0116] For example, the motor-gearbox housing 4 has a first wall 23 with an output opening 24 for the particularly rotationally fixed connection of the output shaft 8 to the lever 9, a second wall adjacent to the first wall 23, and a third wall opposite the second wall. The drive device 1 is designed to be fastened with both the second wall and the third wall facing the leaf, i.e., the exemplary door leaf. The same can apply to the closer housing 12. The motor-gearbox housing 4 and also the closer housing 12 can each be cuboid-shaped to enable installation on both sides.

[0117] In Figure 1 The control module 26, which has a control device, is also visible. The control module 26 is completely arranged within the master housing 5 of the drive device 1.

[0118] Figure 3shows a special embodiment, wherein the transmission element 18 is designed as a cam disc, specifically as a heart-shaped cam disc. As in Figure 3 As can also be seen, a fixed axle body 19 is arranged, wherein the transmission element 18 and the closing wheel 10 are rotatably mounted on the axle body 19.

[0119] In the Figures 4 and 5 the drive device 1 is shown in a further embodiment, wherein the gear 7, in contrast to the embodiment, is Figures 1 and 2 is designed as a planetary gear. The terms planet and planetary gear are used synonymously.

[0120] As a planetary gear, the gear 7 has a Wolfrom stage. Such a Wolfrom stage has a first gear stage and a second gear stage. The first gear stage comprises a sun gear, a plurality of first planets 32 fastened to a planet carrier and driven by the sun gear, and a first, fixed ring gear. The sun gear and the first fixed ring gear are in the Figures 4 and 5 not visible due to the selected view. The second gear stage comprises a second rotatable ring gear 33, second planets 31 that are fixed to the first planets 32. The second planets 31 drive the second ring gear 33. The second ring gear 33 forms the power output of the planetary gear. Figure 5 the second ring gear is removed.

[0121] The transmission 7 according to the embodiment to the Figures 4 and 5is designed as a combination of planetary gear and spur gear. The second ring gear 33 of the planetary gear has an external toothing 34 and acts as a spur gear. The ring gear 33 meshes with the closer gear 10 of the closer module 11. In the exemplary embodiment, the closer gear 10 forms Figures 4 and 5 the interface element.

[0122] In the example of the Figures 4 and 5 the output axis X2 is coaxial to the machine axis X1.

[0123] In the described embodiments, the electrical machine 6 is designed as an axial flux machine.

[0124] The electrical machine 6 is shown as a detail in Figure 6shown in principle. The electrical machine 6 has a stator 36 and a rotor 37. The stator 36 has a plate-shaped stator base 38 and a plurality of stator teeth 39 protruding from the stator base 38 in the axial direction of the electrical machine 6. A coil 41 is arranged around each of the stator teeth 39. Each stator tooth 39 has an electrically insulating tooth shell 45, the stator 36 having a plurality of coils 41 and each of the coils 41 being wound around the tooth shell 45 and therefore indirectly via the tooth shell 45 around the stator tooth 39. The stator teeth 39 pass through a circuit board 44 to which the coils 41 are contacted.

[0125] In Figure 6 It can be seen that the stator 36 further comprises a fixed bolt 50, wherein the bolt 50 has a bearing receptacle 46 for receiving a rolling bearing 47. By way of example, in Figure 6a rolling bearing 47 with balls 47' is shown. The drive device 1 comprises the rolling bearing 47 for rotatably supporting the rotor 37 relative to the stator 36, wherein the rolling bearing 47 is received on the bearing receptacle 46 of the bolt 50. The rotor 37 is rotatably mounted on the stator 36 by means of the rolling bearing 47. In an embodiment not shown, a bearing receptacle can be provided directly on the stator base, on which a rolling bearing can be received. The rotor 37 comprises several permanent magnets 48. Each permanent magnet 48 is plate-shaped. The rotor 37 has a rotor plate 49 in the form of a rotor disk. Furthermore, each permanent magnet 48 protrudes from the rotor plate 49 of the rotor 37 in the axial direction of the electrical machine, in particular in the direction of the stator 36.

[0126] Like the Figures 1 and 2As can be seen, the transmission 7 has a first transmission element 42 which is rotatable coaxially with the machine axis X1 and which is in particular connected in a rotationally fixed manner to the rotor 37. The transmission 7 further has a second transmission element 43 which is operatively connected to the first transmission element 42, wherein an axis of rotation X4 of the second transmission element 43 runs in a installation space between the machine axis X1 and an outer circumferential surface of the rotor 37 which is virtually extended in the axial direction of the electrical machine 6 or an outer circumferential surface of the stator 36 which is virtually extended in the axial direction of the electrical machine 6, in particular parallel to the machine axis X1.

[0127] In the example of the Figures 4 and 5The first gear element 42 is designed as a sun gear 29 and the second gear element 43 as a planetary gear 32. The sun gear 29 is connected in a rotationally fixed manner to the rotor 37. The rotational axis X4 of the second gear element 43 runs in a space between the machine axis X1 and an outer circumferential surface of the rotor 37 that is virtually extended in the axial direction of the electric machine 6 or an outer circumferential surface of the stator 36 that is virtually extended in the axial direction of the electric machine 6, in particular parallel to the machine axis X1.

[0128] In the Figures 2 and 4 and 5, a circuit board 44 can also be seen, which is arranged in the installation space between the stator base 38 and the rotor 37. List of reference symbols:

[0129] 1Drive device 2Running rail 3Motor-gearbox module 4Motor-gearbox housing 5Superior housing 6Electric machine 7Gearbox 8Output shaft 9Lever 10Closing gear 11Closing module 12Closing housing 13Mechanical energy storage 16First opening in 4 17Second opening in 12 18Transmission element 19Axle body 21Sliding elements 22Output gear of 7 23First wall of 4 24Output opening 26Control module 27Latch carriage 31Planet 32Planet 33Ring gear 34External toothing 36Stator 37Rotor 38Stator base 39Stator teeth 41Coil 42First gear element 43Second gear element 44Board 45Tooth shell 46Bearing mount 47Rolling bearing 47Balls of the rolling bearing 47 48Permanent magnet 49Rotor plate 50Bolt

Claims

1. A drive device (1) for moving a window leaf or door leaf, having an electric machine (6) comprising a, in particular single, stator (36) and an, in particular single, rotor (37) that is rotatable about a machine axis (X1), and having a gear (7) coupled to the electrical machine (3), wherein the gear (7) has a first gear element (42) that is rotatable coaxially with the machine axis (X1), in particular wherein the first gear element (42) is connected to the rotor (37) in a rotationally-fixed manner, wherein the gear (7) has a second gear element (43) which is operatively connected to the first gear element (42), wherein an axis of rotation (X4) of the second gear element (43) runs, in particular parallel to the machine axis (X1), in an installation space between the machine axis (X1) and an outer lateral surface of the rotor (37) that is extended virtually in the axial direction of the electric machine (6) or an outer lateral surface of the stator (36) that is extended virtually in the axial direction of the electric machine (6), further having an output shaft (8) that is rotatable about an output axis (X2) for rotationally-fixed connection to a lever (9), and a closer module (11) having a mechanical energy storage device (13) and a transmission element (18) for translating a linear movement of the mechanical energy storage device (13) into a rotary movement of the transmission element (18), wherein the closer module (11) comprises a closer gear wheel (10) operatively connected to the energy storage device (13) by means of the transmission element (18), and the gear has an output wheel (22) which is coaxial with the output shaft (8) and is rotationally fixed, characterised in that the output axis (X2) runs parallel or coaxially to the machine axis (X1), and in that the output wheel (22) engages with the closer gear wheel (10).

2. The drive device (1) according to claim 1, characterised in that the first gear element (42) and the second gear element (43) or the entire gear (7) is arranged entirely in one installation space, wherein the installation space is delimited by an outer lateral surface of the rotor (37) that is extended virtually in the axial direction of the electric machine (6) or by an outer lateral surface of the stator (36) that is extended virtually in the axial direction of the electric machine (6).

3. The drive device (1) according to one of the preceding claims, characterised by a machine housing and / or a gear-housing and / or a motor-gear housing (4), preferably in that the electric machine (6) is arranged at least partially within the machine housing, particularly preferably in that the gear (7) is arranged at least partially within the motor-gear housing (4).

4. The drive device (1) according to one of the preceding claims, characterised in that the gear (7) is designed as a toothed gear, in particular as a spur gear and / or a planetary gear or as an eccentric gear.

5. The drive device (1) according to one of the preceding claims, characterised in that the gear (7) is designed as a planetary gear, wherein the first gear element (42) is designed as a sun gear and at least one second gear element (43) as a planetary gear (31), preferably in that the gear (7) has at least one Wolfrom stage.

6. The drive device (1) according to claim 5, characterised in that the gear (7) comprises a first ring gear, which is engaged with the planetary gear (32), wherein the planetary gear (32) is mounted so as to be rotatable on a planetary carrier, wherein the planetary carrier is mounted so as to be rotatable on the sun gear or on the rotor (37), which is connected to the sun gear in a rotationally-fixed manner.

7. The drive device (1) according to one of the preceding claims, characterised in that the transmission element (18) is designed as a cam disc.

8. The drive device (1) according to claim 7, characterised in that the closer wheel (10) is arranged coaxially, in particular rotationally fixed, in relation to the transmission element (18), preferably in that the transmission element (18) and the closer wheel (10) are connected in a form-fitting and / or force-fitting and / or materially-bonded manner, particularly preferably in one piece.

9. The drive device (1) according to claim 7 or 8, characterised in that the gear (7) has a transmission ratio as a quotient of the speed of the rotor (37) as a dividend and the speed of the closer wheel (10) or the speed of the transmission element (18) of less than 125, preferably less than 100, particularly preferably less than 75.

10. The drive device (1) according to one of claims 7 to 9, characterised by at least one interface element for forming an operative connection between the electric machine and the closer module, in particular in that the interface element comprises at least one gear wheel.

11. The drive device (1) according to one of claims 7 to 10, characterised by a motor-gear housing (4) and a closer housing (12), wherein the electric machine (6) and the gear (7) are arranged at least partially within the motor-gear housing (4), wherein the energy storage device (13) is arranged within the closer housing (12), wherein the electric machine (6) and the energy storage device (13) are operatively connected by means of the interface element, preferably in that the interface element protrudes through a first opening (16) of the motor-gear housing (4) into the motor-gear housing (4) and / or through a second opening (17) of the closer housing (12) into the closer housing (12).

12. The drive device (1) according to one of the preceding claims, characterised in that the electric machine (6) is designed as an axial flux machine, preferably in that the stator (37) has an, in particular plate-shaped, stator base (38) and a plurality of stator teeth (39) protruding from the stator base (38), in particular in the axial direction, particularly preferably in that a coil (41) is wound at least indirectly or directly around one, in particular around each, stator tooth (39).