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 sash, where a sash is understood to be, in particular, a door or window sash. The pivoting part of a door is referred to as the door leaf. Such drive devices for moving a sash are known. These 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 sash can be closed by the door closer and, if necessary—for example, in case of fire for smoke and heat extraction—opened by the electric motor. The gear transmission is exposed on an outer surface of the drive unit and therefore occupies additional installation space.WO2014 / 152907 A1, DE 10 2015 112685 B3 and DE 32 09 608 A1 disclose drive devices with motor-gearbox module and closing module.

[0003] The aforementioned drive units are typically mounted directly on the sash to be moved, or on a door frame or window frame. Particularly when mounted on the door frame or window frame, the available installation space is severely limited.

[0004] Against this background, the task arises to enable a compact design of the drive unit.

[0005] The problem is solved by a drive device for moving a wing, in particular a door wing or a window wing, with the features of claim 1. Advantageous embodiments of the drive device are specified in the dependent claims, the description, and the figures.

[0006] A particularly advantageous drive device for moving a wing, especially a door wing or a window sash, is presented. The drive device comprises a motor-gearbox module, which includes a motor-gearbox housing, an electric motor with a machine shaft, and a gearbox with an output shaft rotatably mounted about an output axis for connection to a lever. The drive device also includes a closing contact module, comprising a closing contact housing and a mechanical energy storage device. The drive device includes an interface element for establishing a functional connection between the motor-gearbox module and the closing contact module.

[0007] The invention provides a compact drive unit, which also advantageously offers modularity. This means that the drive unit is modularly designed, allowing individual modules to be used independently of the others. Retrofitting modules of the drive unit according to the invention to existing drive units is also possible. The modular design, as defined by the invention, is further achieved by housing both the motor-gearbox module and the normally closed contact module in separate, individual enclosures. The normally closed contact housing and the motor-gearbox housing, i.e., the modules themselves, can be enclosed by a larger, overarching enclosure. The terms "overarching enclosure" and "overarching housing" are used synonymously in the following.

[0008] The lever serves to connect the drive unit to the sash or frame, with the drive unit being optionally mountable on either the frame or the sash. For the purposes of this invention, the term "frame" also includes a door frame or window frame. In particular, the lever can be designed such that a power supply for the electric motor and / or at least a control signal for the electric motor can be transmitted via the lever to the motor-gearbox module, especially to the electric motor itself.

[0009] In particular, the mechanical energy storage device can comprise one or more compression springs and / or tension springs connected via a linkage carriage to a transmission element for converting the linear motion of the energy storage device into a rotary motion of the transmission element. In particular, the transmission element can be designed as a cam disk, most preferably as a heart-shaped cam disk, which will be discussed further below.

[0010] In particular, the motor-gearbox module and / or the normally closed contact module can be arranged at least partially, and in particular completely, within the larger housing. In particular, the motor-gearbox housing can be connected to the larger housing by frictional, positive, and / or material-locking connections. In particular, the normally closed contact housing can be connected to the larger housing by frictional, positive, and / or material-locking connections. In particular, one or more such connections can be implemented in the form of at least one screw connection and / or a pin connection and / or an interference fit and / or a T-slot and / or a snap-fit ​​connection.

[0011] In particular, the electric machine can be configured as a motor and / or generator. As a motor, the machine can generate rotary motion, especially torque, from electrical energy. As a generator, the machine can generate electrical energy from rotary motion, especially torque.

[0012] The machine axis refers to the axis of rotation around which the rotor of the electric machine rotates.

[0013] In particular, the gearbox can be arranged at least partially, and in particular completely, in a space between the output shaft and the machine shaft of the electric machine. In particular, the electric machine and the gearbox can be arranged at least partially, and in particular completely, within the motor-gearbox housing. In particular, the mechanical energy storage device can be arranged at least partially, and in particular completely, within the closing contact housing.

[0014] The phrase "within the housing" means that the elements are arranged at least partially, and in particular completely, within the space formed by the housing.

[0015] In particular, the interface element can be operatively connected, especially in engagement, with the gearbox and operatively connected with the energy storage device. A torque can be transmitted from the output shaft to the closing module and / or from the closing module to the output shaft via the interface element. The interface element can be formed by means of at least one gear element of the gearbox and / or by means of at least one element of the closing module and / or by an additional element. The interface element can be designed as a single piece or in multiple parts.

[0016] Preferably, the drive unit can be integrated into a swing door drive. In a swing door drive, a door leaf is pivoted from a closed position, where it rests against a frame or jamb, to an open position around a leaf axis by means of the drive unit. The torque is transmitted from the drive unit's output shaft to the door or jamb via a lever. The drive unit can be mounted on the door leaf, with a guide rail optionally attached to the jamb, or on the jamb, with a guide rail optionally attached to the door leaf. The swing door drive can include the lever, the guide rail, and / or the door leaf itself. Particularly when used with fire-resistant doors, the drive unit can include a closing contact module.In the event of a fire, the closing module ensures that the fire protection wing closes, particularly without manual operation.

[0017] According to the invention, the output shaft is arranged in a space between the machine axis and the energy storage device. This space has a width, a height, and a depth, the width being limited by the distance between the machine axis and the energy storage device. In particular, the height and / or depth of the space can be limited by the motor-gearbox housing, the gearbox, the electric machine, the energy storage device, or the closing contact housing.

[0018] The output shaft can be arranged, in particular at least partially, preferably completely, within the motor-gearbox housing. In particular, the output shaft can be arranged, in particular at least partially, preferably completely, within the closing contact housing.

[0019] In a further preferred embodiment, the motor-gearbox housing may comprise a first opening and the closing contact housing a second opening. The motor-gearbox housing and the closing contact housing may be arranged relative to each other such that the closing contact module, in particular the energy storage device, and the gearbox, in particular the output shaft, are operatively connected to each other via the interface element through the first and the second openings.

[0020] In particular, the walls of the respective housings, which include the first and second openings, can be designed in such a way that the motor-gearbox housing and the closing device housing can be mounted flush against each other.

[0021] In a further preferred embodiment, the interface element may project into the motor-gearbox housing and / or the closing contact housing. In particular, the interface element may project into the space formed by the respective housing.

[0022] In a favorable embodiment, the interface element may have at least one gear. In particular, the interface element may have several gears, which will be discussed further below.

[0023] In an advantageous embodiment of the invention, the motor-gearbox housing can be connected to the closing device housing by frictional, positive, and / or material-locking means. Such a connection can be achieved, for example, by means of at least one screw connection, a pin connection, an interference fit, a T-slot, and / or a snap-fit ​​connection.

[0024] According to the invention, the output axis is provided to run parallel or coaxially to the machine axis.

[0025] According to the invention, the closing module comprises the translation element for converting a linear movement of the energy storage device into a rotary movement of the translation element about an axis of rotation of the translation element. Furthermore, the output axis and the axis of rotation of the translation element are spaced apart from each other and run parallel to each other.

[0026] On the one hand, the output shaft and the transmission element do not rotate around the same axis and can therefore be arranged in different positions, particularly in a modular fashion. On the other hand, the parallel alignment reduces energy losses and simplifies assembly.

[0027] In particular, the translation element can be designed as a cam disk. The translation element can be symmetrical or asymmetrical, in particular as a heart-shaped cam disk.

[0028] According to the invention, the closing module comprises a closing gear, in particular a closing gear, wherein the closing gear is arranged coaxially, preferably rotationally fixed, to the transmission element. Preferably, the transmission element and the closing gear are positively connected and / or frictionally connected and / or materially connected, and are particularly preferably formed in one piece.

[0029] In particular, the translation element can be arranged at least partially, and especially completely, within the closing mechanism housing.

[0030] According to the invention, the interface element is at least partially formed by the closing gear, in particular a closing gear, or engages with the closing gear, wherein the closing gear is arranged coaxially, preferably rotationally fixed, to the transmission element for translating the linear movement of the energy storage device into a rotary movement of the transmission element. In particular, it can be provided that the transmission element and the closing gear are positively locked and / or force-locked and / or material-locked, preferably formed in one piece.

[0031] The closing gear and the transmission element can be rotatably mounted, either individually or together, about a common axis of rotation. Furthermore, the closing gear and the transmission element can be rotatably mounted, either individually or together, on a fixed axle body by means of one or more rotary bearings, in particular rolling bearings or plain bearings, in particular needle bearings or ball bearings. In particular, the transmission element and the closing gear can be non-rotatably connected to each other by frictional, positive, and / or material-bonded means, or formed as a single piece. This design saves space in axial terms, in particular because the bearings can be arranged surrounded by the transmission element and / or by the closing gear.

[0032] In particular, the closer wheel can be arranged at least partially, and especially completely, within the closer housing.

[0033] In particular, the closing module can have a housing, i.e., the closing module housing and the carriage for forming an operative connection between the mechanical energy storage device and the transmission element. The carriage can be linearly guided on the housing of the closing module, i.e., on the closing module housing, by means of at least one or more sliding elements. Preferably, the sliding element can be plate-shaped. In particular, each sliding element can be movably arranged in a sliding guide of the closing module housing.

[0034] In particular, the linear guidance of the carriage and the absorption of the linear forces transverse to the direction of travel of the carriage are advantageous in the sense of the invention.

[0035] In particular, the casing, i.e., the closer housing, can be made in one piece or in multiple pieces. Specifically, the casing, i.e., the closer housing, can have a bottom wall and / or two end walls, wherein the guide carriage is linearly guided on the bottom wall and / or on one or both end walls. Specifically, the end walls of the casing, i.e., the closer housing, can run parallel to the sash in its closed position. Specifically, the sliding elements can be arranged parallel to the end walls.

[0036] In particular, the sliding element or elements can be designed as a sliding skid or skids. In particular, the sliding element and / or the sliding guide can be coated, at least on the respective contact surfaces, especially by means of a friction-reducing coating. In particular, the sliding element or elements and the carriage can be positively connected and / or frictionally connected and / or materially connected, and are especially preferably formed in one piece.

[0037] According to the invention, the transmission has an output gear, in particular an output pinion, that is coaxial with the output shaft and preferably rotationally fixed. In particular, the output gear and the output shaft can be positively connected and / or frictionally connected and / or materially bonded, preferably forming a single piece. According to the invention, the transmission has the output gear, in particular an output pinion, that is coaxial with the output shaft and in particular rotationally fixed, wherein the output gear is in engagement with the interface element or at least forms a part of the interface element.

[0038] In particular, the interface element can comprise a component, preferably a wheel, most preferably a gear, wherein the component is in direct operative connection with the closing wheel and the driven wheel. In particular, the component can be a belt, a chain or a rope.

[0039] In a further preferred embodiment, the closing module can have the translation element for translating a linear movement of the energy storage device into a rotary movement of the translation element about a rotational axis of the translation element, wherein a translation ratio from the translation element to the output shaft is in the range of 0.6 to 1.1, preferably in the range of 0.65 to 1.05, particularly preferably in the range of 0.7 to 1.0, and in particular 0.75 to 0.9.

[0040] The translation ratio here refers to the quotient of the rotational speed of the translation element (dividual) and the rotational speed of the output shaft, or the quotient of the torque of the translation element (dividual) and the torque of the output shaft.

[0041] In a further preferred embodiment, the motor-gearbox housing or the closing device housing may have a first wall with an output opening for connecting the output shaft to the lever in a particularly rotationally fixed manner, a second wall adjacent to the first wall and a third wall opposite the second wall, wherein the drive device is designed to be attached to the wing with both the second wall and the third wall facing it.

[0042] In particular, the motor-gearbox housing and the normally closed contact housing can each be cuboid in shape. Specifically, the motor-gearbox housing and / or the normally closed contact housing can be cuboid, i.e., with four adjacent walls, where the adjacent walls are orthogonal to each other. This allows the drive unit to be mounted on either side.

[0043] In particular, the drive unit can be mounted on either the hinge side or the opposite side of the sash, and / or on both left- and right-handed sashes. This makes the drive unit more flexible and adaptable to different mounting conditions. For this purpose, the drive unit can be designed symmetrically along a vertical plane running parallel to the closed sash. Furthermore, the output shaft can be rotatably mounted in both directions of rotation from a neutral position. Additionally, the output shaft can be connected to the sash or frame via a lever on either side along its axial path. Finally, a fourth wall of the motor-gearbox housing, opposite the first wall, can have a further output opening.This allows both ends of the axial path of the output shaft to be connected to the sash or frame in a rotationally fixed manner using a lever. In particular, the lever can be designed as a scissor linkage.

[0044] In particular, the transmission can be designed as a gear transmission, preferably as a multi-stage spur gear transmission and / or as a planetary gear transmission or as an eccentric gear transmission.

[0045] In particular, the transmission can be designed as a combination of a planetary gear and a spur gear. A ring gear of the planetary gear can have external teeth and act as a spur gear, especially if the ring gear engages with the closing gear of the closing module and / or the interface element, and / or if the ring gear forms the interface element.

[0046] As a planetary gear system, the transmission can comprise a sun gear fixed to the rotor, particularly a single piece, several 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 system, with the planet carrier being stationary. Alternatively, the planet carrier can be rotatably mounted and form the power output of the planetary gear system, with the ring gear being stationary. The terms "planet" and "planet gear" are used synonymously.

[0047] As a planetary gear system, the transmission can further comprise at least one Wolfrom stage. In a preferred embodiment of such a Wolfrom stage, the planetary gear system has a first gear stage and a second gear stage, wherein the first gear stage comprises a sun gear, several first planets mounted on a planet carrier and driven by the sun gear, and a first stationary ring gear, and the second gear stage comprises a second rotatable ring gear, second planets fixed to rotation with the first planets, in particular planets formed in one piece, wherein the second planets drive the second ring gear. In particular, the second ring gear can form the power output of the planetary gear system.

[0048] As an eccentric gear unit, the gearbox can be designed as a planetary eccentric gear unit and / or a wave gear unit.

[0049] In particular, the interface element can engage with a gear, especially a ring gear, of the transmission, and it can be provided that the gear of the transmission has external teeth. In particular, the external teeth can be operatively connected or engaged with the closing gear, and the closing gear can be operatively connected or rotationally fixed to the transmission element, in particular by positive locking and / or frictional locking and / or material locking, or be formed integrally.

[0050] In a further preferred embodiment, it may be provided that the drive unit has a control module with a control device, wherein it may be preferred that the control module is arranged at least partially, in particular completely, within the superior housing, i.e. within the superior housing of the drive unit.

[0051] In particular, a control module can be arranged in or on the normally closed contact module.

[0052] It is even more preferred that the motor-gearbox module and / or the closing module and / or the control module are arranged at least partially, in particular completely, within the overarching cladding, i.e. within the overarching housing.

[0053] In particular, the control module may include a control housing. The control device may be arranged entirely within the control housing. In particular, the control housing may be connected to the higher-level housing and / or to the motor-gearbox housing and / or to the normally closed contact housing by means of a force-fit, a positive-fit, and / or a material-fit connection. In particular, one or more such connections may be in the form of at least one screw connection and / or a pin connection and / or an interference fit and / or a T-slot and / or a snap connection.

[0054] In particular, the motor-gearbox housing may have one or more pre-fabricated mounting points for a positive-locking and / or friction-locking and / or material-locking connection with the electric machine and / or the gearbox and / or the output shaft. In particular, the closing mechanism housing may have one or more pre-fabricated mounting points for a positive-locking and / or friction-locking and / or material-locking connection with the closing mechanism wheel and / or the transmission element and / or the axle body and / or the link carriage.

[0055] A preferred embodiment provides for the electric machine to be designed as an axial flux machine. In an axial flux machine, the magnetic flux is generated primarily parallel to the machine axis. Compared to other machine types, the axial flux machine has a short axial length. The axial length is defined as the length in a direction parallel to the machine axis. The use of an axial flux machine therefore allows for 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 permanent magnet excitation.The axial flux machine can be configured as a motor and / or generator. As a motor, the axial flux machine can generate rotary motion and / or torque from electrical energy. As a generator, the axial flux machine can generate electrical energy from rotary motion and / or torque.

[0056] In particular, the electric machine, especially as a motor, can have a ratio of maximum torque to axial extent of the machine that is greater than 30 Nm / m, preferably greater than 100 Nm / m, and particularly preferably greater than 200 Nm / m. The axial extent is parallel to the machine axis. In particular, this ratio can be greater than 50 Nm / m, preferably greater than 70 Nm / m, and 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 / m³, preferably greater than or equal to 15000 Nm / m³, and particularly preferably greater than or equal to 20000 Nm / m³, and / or a torque constant of greater than or equal to 0.1 Nm / A, preferably greater than or equal to 0.2 Nm / A, and particularly preferably greater than or equal to 0.3 Nm / A.This design allows for a compact gearbox and small gear ratios, while still ensuring reliable door closing. Furthermore, the entire drive unit can be built compactly.

[0057] In particular, the electric machine, preferably in the configuration as an axial flux machine, can have a single stator and a rotor, in particular a single rotor, rotatable about a machine axis relative to the stator. In particular, the stator can have one or more coils, preferably 7 to 16, more 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.

[0058] The term "coil" refers to an electrical conductor with at least one winding. The electrical conductor can be insulated, particularly by means of a coating, preferably an insulating varnish, wire, and / or insulated tape. 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, wherein individual windings of the coil are electrically insulated from each other by means of a potting material.

[0059] In particular, the rotor can have 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, wherein the stator has a stator base with at least one stator tooth projecting from the stator base, in particular in the axial direction of the axial flux machine, and 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 dividend to the second angular range is in the range of 1.1 to 1.6, preferably in the range of 1.2 to 1.5, particularly preferably in the range of 1.3 to 1.4.

[0060] With multiple teeth and / or magnets, each tooth can have the aforementioned ratio to each magnet. Alternatively or cumulatively, with multiple magnets and teeth, the summed ratio can range from 1.3 to 1.9 or even from 1.5 to 1.8.

[0061] In the context of the invention, "circle around machine axis" means that the machine axis forms the center of the circle.

[0062] 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 extends in the radial direction of the stator starting from the machine axis.

[0063] 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 extends radially from the machine axis in the direction of the rotor. In this way, the specified ratio of the first angular range as dividend to the second angular range can be kept constant along the radial path 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 path of the stator tooth.

[0064] In particular, at least one, and in particular each, permanent magnet can be plate-shaped. The rotor can, in particular, have a rotor plate, and in particular a rotor disk. Furthermore, at least one, and in particular each, permanent magnet can project from the rotor plate of the rotor in the axial direction of the machine, and in particular towards the stator. The rotor plate can, in particular, have one or more recesses, and in particular a number of recesses corresponding to the number of permanent magnets, with each recess containing a permanent magnet. The shape of the recess, and in particular of each recess, can correspond to the shape of the permanent magnet inside. This serves to secure the permanent magnets to the rotor, and in particular to the rotor plate.

[0065] In particular, the ratio between the number of permanent magnets as dividends and the number of coils can be in the range of 1.0 to 1.6, preferably in the range of 1.2 to 1.4, and most preferably 4 / 3. In particular, the ratio between the number of permanent magnets as dividends and the number of coils can be 1.1. In particular, the ratio between the number of permanent magnets as dividends and the number of coils can be 7 / 6.

[0066] In particular, the electrical machine in the configuration as an axial flux machine can have a ratio between the extension of at least one stator tooth in the axial direction of the machine as dividend and the extension of the stator base in the axial direction of the machine, wherein the ratio can be 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.

[0067] In particular, the stator can have a stator base comprising a base section, particularly a plate-shaped one, and several stator teeth projecting from a common surface of the base section, particularly in the axial direction of the machine. Preferably, at least one coil is wound directly or indirectly around at least one, particularly each, stator tooth. In particular, at least one stator tooth can have a tooth sleeve, the coil being arranged around the tooth sleeve. In particular, the tooth sleeve can be electrically insulating, preferably made at least partially of a plastic, and most preferably formed as an injection-molded component.

[0068] In particular, the stator for the electric machine, preferably the axial flux machine for moving the wing, especially the door wing or the window wing, with the, in particular plate-shaped, stator base, and several protruding stator teeth from a common surface of the base section, especially in the axial direction of the axial flux machine, has stator teeth projecting from a common surface of the base section, in particular in the axial direction of the axial flux machine, wherein the stator base has a bearing receptacle for receiving a rolling bearing or a sliding bearing.

[0069] This design is advantageous with regard to its compact construction in the axial direction.

[0070] In particular, the stator teeth can be connected to the stator base by a form-fit, force-fit, and / or material-fit connection.

[0071] In particular, the bearing receptacle can have a bearing support surface, especially an annular one, which is positively and / or force-fit and / or materially bonded to the stator base or is formed integrally with the stator base. The bearing support surface is a surface on or against which the bearing can rest. In particular, the bearing receptacle can be cylindrical, especially hollow cylindrical.

[0072] In particular, the stator may have a fixed bolt, wherein the bolt may be positively connected and / or force-fit and / or materially bonded to the stator or be formed in one piece and may have the bearing receptacle.

[0073] In particular, the gearbox can have a first gearbox element rotatable coaxially with the machine axis; in particular, the first gearbox element can be non-rotatably connected to the rotor. This design is advantageous with regard to saving installation space in the radial direction of the electric machine.

[0074] In particular, the transmission can have 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 an installation space between the machine axis and an outer surface of the rotor or an outer surface of the stator that is virtually extended in the axial direction of the machine, in particular parallel to the machine axis. This design results in a further saving of installation space in the radial direction of the electric machine.

[0075] In particular, the first gear element can be arranged entirely within a construction space, the construction space being limited by an outer surface of the rotor that is virtually extended in the axial direction of the machine.

[0076] In particular, the first and second gear elements or the entire gear unit can be arranged completely within a single installation space, wherein the installation space is limited by an outer surface of the rotor virtually extended in the axial direction of the machine or by an outer surface of the stator virtually extended in the axial direction of the machine.

[0077] In particular, the drive unit can comprise a machine housing and / or a gearbox housing and / or the motor-gearbox housing, wherein the electric machine can be arranged at least partially within the machine housing, and wherein the gearbox can be arranged at least partially within the motor-gearbox housing. Alternatively or cumulatively, the machine and / or the gearbox can be arranged at least partially within the motor-gearbox housing. In particular, the machine housing and / or the gearbox housing can be formed from the motor-gearbox housing. In particular, the machine housing and / or the gearbox housing can have prefabricated receiving points for a positive-locking and / or force-locking and / or material-locking connection to one another. Furthermore, the machine housing and / or the gearbox housing can be formed in one piece.In particular, the machine housing and / or the motor-gearbox housing and / or the closing device housing can each have one or more prefabricated mounting points for a positive-locking and / or force-locking and / or material-locking connection with the electric machine and / or the gearbox. These designs are advantageous with regard to a simple and easy-to-assemble construction; these designs are particularly advantageous with regard to modularity.

[0078] In particular, the electric machine can be arranged at least partially, and especially completely, in a space between a wing axis and the output axis. Specifically, the electric machine can be arranged between the secondary closing edge of the wing, particularly its virtually extended edge, and the output axis.

[0079] The sash has a secondary closing edge facing the sash axis and a main closing edge opposite the secondary closing edge, with the main closing edge usually facing the door handle.

[0080] The electric motor is thus positioned closer to the wing axis than the output shaft, resulting in favorable transmission ratios from the motor to the output shaft when combined with a gearbox. Furthermore, such a drive unit can be easily connected to the mechanical energy storage device of a door closer, since the motor's position places the output shaft towards the main closing edge of the wing, allowing for similarly favorable transmission ratios from the door closer to the output shaft. This design also saves installation space by allowing the control unit to be mounted closer to the electric motor.

[0081] The terms axis, wing axis and output axis refer to virtual axes whose extension is fundamentally unlimited.

[0082] The installation space has a width, a height, and a depth, the width being limited by the distance between the blade axis and the output shaft or gearbox. In particular, the height and / or depth of the installation space may be limited by the motor-gearbox housing, the gearbox, or the electric machine. In particular, the blade axis and / or the output axis may have a substantially vertical orientation, with the vertical component of the orientation being between 90 and 100 percent, particularly 95 percent.

[0083] In particular, the gearbox can be located, at least partially, in a space between the output shaft and the machine shaft. This allows the desired torque and / or speed to be transmitted from the electric machine to the output shaft via the gearbox in a simple and / or space-saving manner.

[0084] In particular, the motor-gearbox module can have a motor-gearbox housing with a first side wall facing the wing axis and a second side wall facing away from the wing axis, wherein the electric machine is arranged at least partially, preferably completely, in a space between the first side wall and the output shaft. In particular, the electric machine can be arranged completely within the motor-gearbox housing. Cables, etc., of the electric machine are not included.

[0085] In particular, the gearbox can have a transmission ratio as the quotient of the rotor speed (divided by the rotational speed) and the output shaft speed, wherein the transmission ratio is less than 125, preferably less than 100, and particularly preferably less than 75. This design enables a compact gearbox construction, resulting in a more compact overall drive unit and a reduction in friction.

[0086] In particular, the drive unit may have a circuit board and the stator may have one or more coils, the coils being electrically connected to the circuit board.

[0087] A circuit board, as defined in the invention, is a plate-shaped, and in particular populated, element for conducting electrical energy. The circuit board can be designed as a printed circuit board (PCB). The terms are used synonymously below. The circuit board can comprise several layers and / or be made of plastic and / or be flexible. In particular, the circuit board can be designed as a solid aluminum PCB. This design is advantageous with regard to good thermal conductivity.

[0088] In particular, at least one, and especially each, coil can be integrated into or onto the circuit board, and especially arranged in the material of the circuit board.

[0089] In particular, the electrical machine in the configuration as an axial flux machine can have a circuit board which is arranged in a space between the stator base and the rotor, wherein at least one, in particular each, of the coils is electrically connected to the circuit board.

[0090] In particular, the coil can be soldered to the circuit board. The circuit board can, in particular, extend at least partially over a space bounded by an axially extended surface of the stator and / or by an axially extended surface of the rotor. The circuit board can, in particular, be arranged parallel to the stator base.

[0091] In particular, the stator can have a stator base, especially a plate-shaped one, and several stator teeth projecting from the stator base in the axial direction of the machine, wherein the plate is arranged in a first plane, especially parallel to the stator base, the first plane being located in a space between the stator teeth and the rotor. In particular, the plate can rest on the stator teeth. In particular, the plate can be arranged in an air gap between the stator and the rotor.

[0092] In particular, the stator can have several stator teeth projecting from the stator base in the axial direction of the electric machine, wherein the circuit board is arranged in a second plane, in particular parallel to the stator base, and wherein the second plane is penetrated by at least one, in particular each, stator tooth of the stator. This design is advantageous with regard to further space savings in the axial direction. In particular, the circuit board can have one or more openings, in particular a number of openings corresponding to the number of stator teeth, which are penetrated by the stator teeth. In particular, the shape of the respective openings can correspond to the surface of the respective teeth parallel to the circuit board. In particular, the circuit board can include a single opening for several or all teeth.

[0093] According to a further aspect of the invention, a method is provided for pivoting the sash, in particular the door sash or the window sash, from a closed position at an opening angle of 0° to an open position at an opening angle greater than 0° and / or from the open position at an opening angle greater than 0° to the closed position at an opening angle of 0° by means of a sash torque, wherein the sash torque comprises a manual torque, in particular generated by a person, and a drive torque. The drive torque is generated by means of the drive unit with the motor-gearbox module, the closer module, and a control module. The motor-gearbox module comprises an electric machine comprising the stator, in particular a single stator, and the rotor, in particular a single stator. The closer module comprises the energy storage device, in particular a mechanical one. The control module comprises a control device.The drive torque comprises a machine torque generated directly or indirectly by the electric machine and a closing torque generated by the closing module. The machine torque is greater than 0 Nm when at least one of the opening angles is greater than 0°.

[0094] In particular, this can be provided for any opening angle greater than 0°.

[0095] The term "closing movement" is used synonymously with a movement from the open position to the closed position. The term "opening movement" is used synonymously with a movement from the closed position to the open position.

[0096] The term "moment" refers to torques exerted directly or indirectly on the wing.

[0097] The term "machine torque greater than 0 Nm" refers to the magnitude of the machine torque. This includes both a machine torque that assists the closing movement, particularly an additional closing torque, and a braking torque that counteracts the closing movement of the door, particularly a closing torque of the closing module.

[0098] Further details and advantages of the invention will be explained below with reference to the exemplary embodiments shown in the figures. These show: Fig. 1 shows an embodiment of a drive device according to the invention in a schematic sectional view; Fig. 2 shows the drive device made of Figure 1 as a detail in a perspective view; Fig. 3 a translation element as a detail in a top view, Fig. 4 another embodiment of a drive device with planetary gears, Fig. 5 the drive device made of Figure 4with removed ring gear; and Fig. 6 an axial flux machine in principle in section.

[0099] In the different figures, identical parts are always provided with the same reference symbols, which is why they are usually only described once.

[0100] Figure 1Figure 1 shows a drive unit 1 for moving a wing, in particular a door wing or a window wing. The drive unit 1 comprises a motor-gearbox module 3, which includes 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 unit 1 also includes a normally closed contact module 11, which includes a normally closed contact housing 12 and a mechanical energy storage device 13. The drive unit 1 has an interface element for forming an operative connection between the motor-gearbox module 3 and the normally closed contact module 11.

[0101] The lever 9 serves to connect the drive unit 1 to the sash, i.e., to the exemplary door or window sash, or to a frame, wherein the drive unit 1 can be optionally mounted on the frame or on the sash. For the purposes of this invention, the term "frame" also includes a door or window frame. In particular, the lever 9 can be configured such that a power supply for the electric motor 6 and / or at least a control signal for the electric motor 6 can be transmitted via the lever 9 to the motor-gearbox module 3, in particular to the electric motor 6 and / or to a control module 26. The lever 9 is guided in a track 2, which in the illustrated embodiment would be mounted on a frame (not shown).

[0102] As in the Figure 1 and 2As can be clearly seen, the output shaft 8 is arranged in an installation space between the machine axis X1 of the electric machine 6 and the energy storage device 13.

[0103] The motor-gearbox housing 4 has a first opening 16, while the closing contact housing 12 has a second opening 17. As shown in Figure 1 As can be seen, the motor-gearbox housing 4 and the closing device housing 12 are arranged in such a way that the closing device module 11, in particular the energy storage device 13, and the gearbox 7, in particular the output shaft 8, are operatively connected to each other by means of the interface element through the first opening 16 and the second opening 17.

[0104] The motor-gearbox module 3 and / or the normally closed contact module 11 are each at least partially, and in particular completely, arranged within a larger housing 5. The motor-gearbox housing 4 is connected to the larger housing 5 and / or to the normally closed contact housing 12 by frictional, positive, and / or material-locking connections. The normally closed contact housing 12 is connected to the larger housing 5 by frictional, positive, and / or material-locking connections. One or more such connections are exemplified by at least one screw connection.

[0105] In the Figure 1 and 2 It can be seen that the drive axis X2 is parallel to the machine axis X1.

[0106] The closing module 11 has a translation element 18 for translating a linear movement of the energy storage device 13 into a rotational movement of the translation element 18 about a rotational axis X3 of the translation element 18. As shown in Figure 1 The output axis X2 and the axis of rotation X3 of the transmission element 18 are clearly spaced apart 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 to a closing wheel 10 in a rotationally fixed manner.

[0107] The mechanical energy storage device 13 is designed as a compression spring as an example. The compression spring is connected via a link carriage 27 to the transmission element 18 for converting the linear motion of the mechanical energy storage device 13 into a rotary motion of the transmission element 18. The link carriage 27 has sliding elements 21 which are Figure 2 are recognizable. The lashing wagon 27 is in Figure 4 The closing wheel 10 is arranged coaxially and rotationally fixed to the translation element 18 for translating the linear movement of the energy storage device 13 into a rotary movement of the translation element 18.

[0108] The gearbox 7 has an output gear 22, namely output gear, which is coaxial with the output shaft 8 and rotationally fixed, wherein the output gear 22 is in engagement with the closing gear 10.

[0109] In this embodiment, the interface element is connected to the Figure 1 and 2 formed by the output gear 22.

[0110] By way of example, the motor-gearbox housing 4 has a first wall 23 with an output opening 24 for a particularly rotationally fixed connection of the output shaft 8 to the lever 9, a second wall adjoining the first wall 23, and a third wall opposite the second wall, wherein the drive unit 1 is designed to be attached to the leaf, i.e., the exemplary door leaf, with both the second wall and the third wall facing it. The same can apply to the closer housing 12. Both the motor-gearbox housing 4 and the closer housing 12 can each be cuboid in shape to allow mounting from either side.

[0111] In Figure 1 The control module 26, which includes a control device, is still recognizable. The control module 26 is completely arranged within the larger housing 5 of the drive unit 1.

[0112] Figure 3Figure 1 shows a particular embodiment in which the translation element 18 is designed as a cam disk, specifically as a heart-shaped lifting cam disk. As in Figure 18, the translation element 18 is designed as a cam disk, specifically as a heart-shaped lifting cam disk. Figure 3 Furthermore, it can be seen that a fixed axle body 19 is arranged, wherein the translation element 18 and the closing wheel 10 are rotatably mounted on the axle body 19.

[0113] In the Figures 4 and 5 The drive unit 1 is shown in a further embodiment, wherein the gearbox 7 differs from the embodiment shown in the previous example. Figure 1 and 2 It is designed as a planetary gear system. The terms planet and planetary gear are used synonymously.

[0114] As a planetary gear system, the gear system 7 has at least one Wolfrom stage. Such a Wolfrom stage comprises a first gear stage and a second gear stage. The first gear stage includes a sun gear, several first planets 31 attached to a planet carrier and driven by the sun gear, and a first, stationary ring gear. The sun gear and the first stationary ring gear are in the Figures 4 and 5 Not discernible due to the chosen section. The second gear stage comprises a second rotatable ring gear 33, and second planets 32 that are fixed to rotation with the first planets 31, in particular as one-piece components. The second planets 32 drive the second ring gear 33. The second ring gear 33 forms the power output of the planetary gear set. Figure 5 The second ring gear has been removed.

[0115] The gearbox 7 according to the exemplary embodiment to the Figures 4 and 5is designed as a combination of a planetary gear and a spur gear. The second ring gear 33 of the planetary gear has external teeth 34 and acts as a spur gear. The second ring gear 33 meshes with the normally closed gear 10 of the normally closed module 11. In this embodiment, the normally closed gear 10 forms the Figures 4 and 5 the interface element.

[0116] In the exemplary embodiment of the Figures 4 and 5 The output axis X2 is coaxial with the machine axis X1.

[0117] In the described embodiments, the electrical machine 6 is in each case designed as an axial flux machine.

[0118] The electric machine 6 is a single unit in Figure 6The electrical machine 6 is shown in principle. It has a stator 36 and a rotor 37. The stator 36 has a plate-shaped stator base 38 and several stator teeth 39 projecting 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 sleeve 45. The stator 36 has several coils 41, and each coil 41 is wound around the tooth sleeve 45 and therefore indirectly around the stator tooth 39 via the tooth sleeve 45. The stator teeth 39 extend through a circuit board 44, to which the coils 41 are connected.

[0119] In Figure 6 It can be seen that the stator 36 further comprises a stationary bolt 50, wherein the bolt 50 has a bearing receptacle 46 for receiving a rolling bearing 47. For example, in Figure 6A rolling bearing 47 with balls 47' is shown. The drive unit 1 includes the rolling bearing 47 for rotatably mounting the rotor 37 relative to the stator 36, wherein the rolling bearing 47 is received in 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, in 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 projects from the rotor plate 49 of the rotor 37 in the axial direction of the electric machine, in particular in the direction towards the stator 36. Reference symbol list:

[0120] 1 Drive unit 2 Guide rail 3 Motor-gearbox module 4 Motor-gearbox housing 5 Main housing 6 Electric machine 7 Gearbox 8 Output shaft 9 Lever 10 Normally closed contact wheel 11 Normally closed contact module 12 Normally closed contact housing 13 Mechanical energy storage device 16 First opening in 4 17 Second opening in 12 18 Transmission element 19 Axle body 21 Sliding elements 22 Output gear of 7 23 First wall of 4 24 Output opening 26 Control module 27 Carriage 31 Planet 32 ​​Planet 33 Ring gear 34 External teeth 36 Stator 37 Rotor 38 Stator base 39 Stator teeth 41 Coil 42 First gear element 43 Second gear element 44 Circuit board 45 Tooth sleeve 46 Bearing mount 47 Rolling bearing 47 Balls of the rolling bearing 47 48 Permanent magnet 49 Rotor plate 50 Bolt

Claims

1. A drive device (1) for moving a leaf, in particular a door leaf or a window leaf, with a motor-gearbox module (3) which comprises a motor-gearbox housing (4), an electric machine (6) with a machine axis (X1), a gearbox (7) with an output shaft (8) mounted rotatably about an output axis (X2) for connection to a lever (9), and with a closer module (11) comprising a closer housing (12) as well as a mechanical energy accumulator (13) and an interface element for forming an operative connection between the motor-gearbox module (3) and the closer module (11), wherein the output axis (X2) runs parallel or coaxial to the machine axis (X1), and the interface element is at least partially formed by a closer wheel (10), in particular a closer gear wheel, or is in engagement with the closer wheel (10), wherein the closer wheel (10) is arranged coaxially, preferably non-rotatably, relative to a transmission element (18) for translating the linear movement of the mechanical energy accumulator (13) into a rotary movement of the transmission element (18), wherein the gearbox (7) has an output wheel (22), in particular an output gear wheel, which is coaxial, in particular non-rotatable, with the output shaft (8) wherein the output wheel (22) is in engagement with the interface element or forms at least a part of the interface element, wherein the output shaft (8) is arranged in an installation space between the machine axis (X1) and the mechanical energy accumulator (13), wherein the closer module (12) comprises the transmission element (18) for translating a linear movement of the mechanical energy accumulator (13) into a rotary movement of the transmission element (13) about an axis of rotation (X3) of the transmission element (18), characterised in that the output axis (X2) and the axis of rotation (X3) of the transmission element (18) run spaced apart from one another and parallel to one another.

2. The drive device (1) according to claim 1, characterised in that the motor-gearbox housing (4) comprises a first opening (16) and the closer housing (12) comprises a second opening (17), wherein the motor-gearbox housing (4) and the closer housing (12) are arranged relative to one another in such manner that the closer module (11), in particular the mechanical energy accumulator (13), and the gearbox (7), in particular the output shaft (8), are operatively connected to one another by means of the interface element through the first and second openings (16, 17).

3. The drive device (1) according to one of the preceding claims, characterised in that the interface element projects into the motor-gearbox housing (4) and / or into the closer housing (12).

4. The drive device (1) according to one of the preceding claims, characterised in that the interface element comprises at least one gear wheel.

5. The drive device (1) according to one of the preceding claims, characterised in that the motor-gearbox housing (4) is connected to the closer housing (12) in a force-fitting and / or form-fitting and / or materially-bonded manner.

6. The drive device (1) according to one of the preceding claims, characterised in that the transmission element (18) and the closer wheel (10) are connected in a force-fitting and / or form-fitting and / or materially-bonded manner, preferably are in one piece.

7. The drive device (1) according to one of the preceding claims, characterised in that a transmission ratio from the transmission element (18) to the output shaft (8) is in the range from 0.6 to 1.1, preferably in the range from 0.65 to 1.05, particularly preferably in the range from 0.7 to 1.0, in particular 0.75 to 0.9.

8. The drive device (1) according to one of the preceding claims, characterised in that the motor-gearbox housing (4) or the closer housing (12) comprises a first wall (23) with an output opening (24) for connecting the output shaft (8) to the lever (9), in particular in a non-rotatable manner, a second wall adjoining the first wall (23) and a third wall opposite the second wall, wherein the drive device (1) is designed in such manner to be fastened both to the second wall and to the third wall facing the leaf or a frame.

9. The drive device (1) according to one of the preceding claims, characterised by a control module (26) with a control device, preferably in that the control module (26) is arranged preferably at least partially, in particular completely, within a higher-level housing (5) of the drive device (1).

10. The drive device (1) according to one of the preceding claims, characterised in that the electric machine (6) is in the form of an axial flux machine.