EP4217569A1

EP4217569A1 - Drive device for pivoting a leaf

Info

Publication number: EP4217569A1
Application number: EP21782544.7A
Authority: EP
Inventors: Sven Busch; Thomas BALK; Martin WAGNE; Jan Eric Vom Brocke
Original assignee: Dormakaba Deutschland GmbH
Current assignee: Dormakaba Deutschland GmbH
Priority date: 2020-09-25
Filing date: 2021-09-24
Publication date: 2023-08-02
Also published as: DE102020125115A1; WO2022063952A1

Abstract

The invention relates to a drive device (1) for pivoting a leaf (2) about a leaf axis, in particular a door leaf or a window leaf, said device having a motor/transmission module (3) comprising an electric machine (6), wherein the electric machine (6) has a, in particular single, stator (36) and a, in particular single, rotor (37) that is rotatable about a machine axis (X1), and comprising a transmission (7), wherein the drive device (1) has an output shaft (8) that is rotatable about a drive axis (X2). According to the invention, the transmission (7) has a gear ratio as the quotient of the speed of the rotor (37) as the dividend and the speed of the output shaft (8), wherein the gear ratio is less than 125, preferably less than 100, particularly preferably less than 75.

Description

Title: Drive device for pivoting a wing

The invention relates to a drive device for pivoting a wing with the features of the preamble of claim 1.

The invention can be used in a drive device for pivoting a sash, a sash being understood to mean in particular a door or window sash. The pivoting part of a door is referred to as a door leaf, for which the term door leaf is also common.

Such drive devices are known. Such a drive device includes an electric machine and a transmission coupled to the electric machine. The electric machine is coupled to a closer unit via the transmission. This closer unit includes a mechanical energy store and a closer wheel coupled to the energy store. The rotor of the electrical machine and the closer wheel are operatively connected via the transmission, so that the wing can be driven either by the electrical machine or by the closer unit or by both.

The invention is based on the object of demonstrating an improved drive device with which reliable closing of a leaf is made possible, preferably in which the installation space required for the drive device is to be kept as small as possible.

The object is solved by a drive device having the features of independent claim 1 . Advantageous developments of the drive device are specified in the dependent claims, the description and in the figures. Features and details that are 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. The features mentioned in the description and in the claims can each be essential to the invention individually or in combination. The description additionally characterizes and specifies the invention, in particular in connection with the figures.

A drive device for pivoting a sash about a sash axis, in particular a door sash or a window sash, is particularly advantageous. The drive device has a motor-gearbox module, which has an electrical machine, the electrical machine having one, in particular a single, stator and a in particular having a single rotor which can be rotated about a machine axis. The drive device also has a gear, with the drive device having an output shaft which can be rotated about an output axis. It is particularly advantageous for the drive device that the transmission has a transmission ratio as the quotient of the speed of the rotor as a dividend and the speed of the output shaft, the transmission ratio being less than 125, preferably less than 100, particularly preferably less than 75.

By selecting the transmission ratio of the transmission, which is less than 125, preferably less than 100, particularly preferably less than 75, a compact design of the transmission is made possible, so that the drive device is compact overall, but friction is also reduced . The efficiency of the transmission can also be increased because energy losses can be reduced with small transmission ratios.

In known drive devices, it has proven to be disadvantageous that the torque provided by the closer module for closing the leaf is counteracted by a relatively high torque, which is caused by the transmission and/or the electric machine. This torque must be overcome by the closer module to close the sash. In an emergency in particular, for example in the event of a fire or a power failure, the functionality of the electrical machine cannot be guaranteed. In an ideal embodiment of the idea of the invention by the inventive selection of the transmission ratio of the gear, which is less than 125, preferably less than 100, particularly preferably less than 75, the torque counteracting the closer module can be reduced when closing the leaf. Therefore, even in an emergency, for example in the event of a fire, safe, purely mechanical closing can be enabled by the closer module.

In particular, the output shaft can be connected in particular in a rotationally fixed manner to a lever to form a connection of the drive device to the wing or to a frame. The lever is used to form the connection of the drive device to the wing or to the frame, the drive device being mountable on the frame or on the wing. Within the meaning of the invention, the term frame also includes a door frame or window frame. In particular, the lever can be designed in such a way that a voltage supply for the electrical machine and/or at least one control signal for the electrical machine via the lever to the motor-transmission module, in particular to the electrical machine, can be transmitted.

In particular, the motor-gearbox module can have a motor-gearbox housing. In particular, the electric machine can be arranged completely inside the motor/gearbox housing. In particular, the output shaft can be arranged at least partially, preferably completely, within the motor/gearbox housing.

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

In particular, the electrical machine can be designed as a motor and/or generator. As a motor, the machine can generate a rotary movement, in particular a torque, from electrical energy. As a generator, the machine can generate electrical energy from a rotational movement, in particular from a torque.

The terms axis, wing axis and output axis mean virtual axes, in particular also axes of rotation, which are fundamentally not limited in their extent. The machine axis means the axis of rotation around which the rotor of the electrical machine rotates.

Provision can preferably be made for the electrical machine, in particular as a motor, to 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. 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, ie torque to motor volume, of greater than or equal to 6000 Nm/m ^A 3 , preferably greater than or equal to 15000 Nm/m ^A 3 and particularly preferably greater than or equal to 20000 Nm/m ^A 3 and/or or have 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. These configurations of the electrical machine enable a compact design of the transmission and such small transmission ratios, while nevertheless enabling reliable, in particular assisted, opening and/or reliable closing of the sash. The drive device is therefore compact overall. In a preferred embodiment, the drive device has a closer module with a mechanical energy store and a translation element for translating the linear movement of the energy store into a rotary movement of the translation element.

In particular, the output axis and the axis of rotation of the transmission element can run parallel to one another. On the one hand, the output shaft and the transmission element therefore do not rotate about the same axis of rotation and can be arranged in different positions, in particular in a modular manner. On the other hand, the parallel run reduces energy losses and facilitates assembly.

In particular, the mechanical energy store can include one or more compression springs and/or tension springs, which are connected to the translation element via a link carriage to translate the linear movement of the energy store into a rotary movement of the translation element. In particular, the transmission element can be designed as a cam disk, particularly preferably as a heart-shaped lifting cam disk.

In a further preferred embodiment, the drive device has an interface element for forming an operative connection between the motor-gear module and the closer module. It is preferred that the interface element has at least one gear wheel, in particular a plurality of gear wheels.

In particular, the electrical machine can be arranged with the transmission in a motor-transmission housing, with the energy store being able to be arranged with the transmission element and/or a closer wheel in the closer housing. The motor/gear housing and a closer housing can include openings facing one another, through which the gear and the transmission element are in operative connection with one another by means of the interface element. The motor/gear housing can have at least one further opening coaxial to the output shaft for the connection have with the lever.

In particular, the motor-transmission housing can have a first opening, with the closer housing comprising a second opening. The motor/transmission housing and the closer housing are arranged relative to one another in such a way that the closer module, in particular the energy store, and the gear, in particular the output shaft, are in operative connection with one another through the first and the second opening by means of the interface element. It is preferred that the interface element protrudes into the motor-gear housing of the motor-gear module and/or into the closer housing of the closer module. In particular, it can be provided that the interface element protrudes into the space formed by the respective housing.

It is even more preferred that the interface element is at least partially formed by a closer wheel, in particular a closer gear wheel, or is in engagement with the closer wheel. The closer wheel is connected coaxially, in particular in a rotationally test, to the transmission element. It is preferred that the transmission element and the closer wheel are connected in a form-fitting and/or force-fitting and/or cohesive manner, preferably being formed in one piece. In particular, the transmission element and/or the closer wheel can be arranged at least partially, in particular completely, within the closer housing. In particular, the output shaft can be arranged at least partially, preferably completely, within the closer housing of the closer module.

It is also preferred that the closer module has a fixed axle body, with the transmission element and the closer gear wheel being rotatably mounted on the axle body.

In particular, the closer module can have the closer housing, with the axle body being fixed to the closer housing.

In particular, the motor-transmission housing can be connected to the closer housing in a non-positive and/or positive and/or material connection, preferably 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.

In particular, the motor-transmission housing can have one or more prefabricated receiving points for a form-fitting and/or non-positive and/or material connection with the electrical machine and/or the transmission and/or the output shaft. In particular, the closer housing can have one or more prefabricated receiving points for the positive and/or non-positive and/or material connection with the closer wheel and/or the transmission element and/or the axle body and/or the link plate carriage. In a further preferred embodiment, the transmission can have a driven wheel, in particular a driven gear wheel, which is coaxial with the driven shaft and is preferably non-rotatable. The driven gear may form the interface member, or may engage the interface member.

In particular, the driven wheel and the driven shaft can be connected in a form-fitting and/or force-fitting and/or cohesive manner, preferably in one piece.

In particular, the driven wheel and the closer wheel can be designed as meshing gears.

In particular, the axis of rotation of the driven wheel can run between the axis of rotation of the closer wheel and the machine axis. Alternatively or cumulatively, the axis of rotation of the driven wheel can run parallel to the axis of rotation of the closer wheel and/or to the machine axis.

In particular, a transmission ratio from the transmission element to the output shaft can be 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 up to 0.9. The transmission ratio here means the quotient of a speed of the transmission element as a dividend and a speed of the output shaft or the quotient of a torque of the transmission element as a dividend and a torque of the output shaft.

The transmission is preferably designed as a gear transmission, preferably as a multi-stage spur gear and/or as a planetary gear or as an eccentric gear.

In particular, the gear can be designed as a combination of planetary gear and spur gear. A ring gear of the planetary gear can have external teeth and act as a spur gear, in particular with the ring gear being in engagement with the closer wheel of the closer module and/or the interface element and/or with the ring gear forming the interface element.

As a planetary gear, the gear can have a sun gear that is non-rotatable with the rotor, in particular one piece, several planet gears fastened around the sun gear on a planet carrier, and the ring gear that meshes with the planets. The ring gear can be rotatably mounted and form the power output of the planetary gear, wherein the planet carrier is designed to be fixed. Alternatively, the planet carrier can be rotatably mounted and form the power output of the planetary gear, with the ring gear being designed to be stationary. The terms planet and planet wheel are used synonymously.

As a planetary gear, the gear can also have at least one tungsten stage. In a preferred embodiment of such a tungsten stage, the planetary gear has a first gear stage and a second gear stage, with the first gear stage comprising a sun gear, a plurality of first planets attached to a planet carrier and driven by the sun gear, and a first stationary ring gear, and the second gear stage comprising a second rotatable ring gear, second with the first planet torsionally fixed, in particular one-piece planet, wherein the second planet drive the second ring gear. In particular, the second ring gear can form the power output of the planetary gear.

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

In particular, the movement of the energy store can be dampened without hydraulics. Alternatively or cumulatively, the drive device can dampen the movement of the energy store exclusively via the transmission and the electric machine.

Even more preferably, the gear can have a first gear element that can be rotated coaxially with the machine axis. In particular, the first gear element can be non-rotatably connected to the rotor, it being preferred for the gear to have a second gear element which is operatively connected to the first gear element. It is particularly preferred that an axis of rotation of the second transmission element is in an installation space between the machine axis and an outer lateral surface of the rotor that is virtually extended in the axial direction of the electric machine or an outer lateral surface of the stator that is virtually extended in the axial direction of the machine, in particular parallel to the machine axis, runs. In particular, the second transmission element can be formed by means of a second spur gear or by means of a planetary gear. This achieves a compact design in the radial direction of the electrical machine.

It is preferred that the first and the second transmission element or the entire transmission is arranged completely in one installation space, the installation space being extended by an outer jacket surface of the rotor that is virtually extended in the axial direction of the electric machine or is delimited by an outer lateral surface of the stator that is virtually extended in the axial direction of the electrical machine.

It is particularly preferred that the electrical machine is designed as an axial flow machine. It is preferred that the stator has one or more coils and the rotor has one or more permanent magnets. In particular, at least one, in particular each, permanent magnet can be designed in the form of a plate. 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 indentations, in particular a number of indentations corresponding to the number of permanent magnets, with a permanent magnet lying in each indentation. In particular, the shape of the indentation, in particular each indentation, can correspond to the shape of the inlaid permanent magnet. This serves to secure the permanent magnets on the rotor, particularly on the rotor plate.

In the axial flux machine, the magnetic flux is mainly formed parallel to the machine axis of the electrical machine. The axial flow machine has a small overall axial length compared to other machine types. The axial overall length means an overall length in a direction parallel to the machine axis. The use of an axial flow machine therefore enables the dimensions of the electrical machine to be reduced in the axial direction. This allows a compact configuration of the motor-transmission module. In particular, the axial flow machine can be a brushless direct current machine, in particular a so-called BLDC machine. Such a machine is constructed like a three-phase synchronous machine with excitation by permanent magnets.

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

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

In particular, the drive device for moving or pivoting the sash, in particular the door sash or the window sash, can be provided with the electric machine, the electric machine being designed as an axial flux machine and the, in particular single, stator and the, in particular only, single one about the machine axis opposite the stator may have a rotatable rotor.

This refinement is advantageous with regard to the compact construction combined with high performance, and it is also possible to save installation space.

The axial flow machine can be designed as a motor and/or generator. As a motor, the axial flow machine can generate a rotational movement, in particular a torque, from electrical energy. As a generator, the axial flow machine can generate electrical energy from a rotational movement, in particular from a torque.

In particular, the rotor can have at least one permanent magnet, the permanent magnet being arranged along a virtual circle around the machine axis and spanning a first angular range, and the stator having the stator base with at least the 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, the ratio of the first angular range as a dividend to the second angular range being 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. If there are several teeth and/or magnets, each tooth can have the above-mentioned ratio to each magnet. Alternatively or cumulatively, in the case of a plurality of magnets and teeth, a summed range, ie a ratio, can be in a range from 1.3 to 1.9 or even from 1.5 to 1.8.

For the purposes of the invention, a circle around the machine axis means that the machine axis forms the center point of the circle.

A surface of the stator tooth running parallel to the stator base, in particular of each stator tooth, can be designed in such a way 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 running parallel to the stator base, in particular of each permanent magnet, can be designed in such a way 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 running parallel to the stator base, in particular of each stator tooth, can remain constant along the axial course of the stator tooth.

In particular, at least one, in particular each, permanent magnet can be designed in the form of a plate. Furthermore, at least one, in particular each, permanent magnet can protrude from a rotor disk of the rotor in the axial direction of the machine, in particular in the direction of the stator.

In particular, the stator can have the stator base, which has a base section, in particular in the form of a plate, and a plurality of stator teeth protruding from a common surface of the base section, in particular in the axial direction of the machine, it being possible for preference to have at least one, in particular each, stator tooth at least one winding is wound directly or indirectly.

It is further preferred that the stator has a stator base and a plurality of stator teeth protruding from the stator base, in particular in the axial direction of the machine, a coil being wound directly or indirectly around at least one of the stator teeth, in particular around each stator tooth. 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 cohesive manner or can be formed in one piece.

In particular, at least one tooth can have a tooth surface, it being possible for the coil to be arranged around the tooth surface. In particular, the tooth jacket can be electrically insulating, preferably consist at least partially of a plastic, particularly preferably be designed as an injection molded component.

More preferably, the electrical machine can have multiple stator teeth and multiple permanent magnets, with a ratio of the number of permanent magnets as Dividend to the number of stator teeth is between 1.1 and 1.6, preferably between 1.2 and 1.4, particularly preferably 4/3.

In particular, the stator for the axial flux machine for moving the sash, in particular the door sash or the window sash, with the, in particular plate-shaped, stator base and a plurality of stator teeth protruding from a common surface of the base section, in particular in the axial direction of the axial flux machine, can have, it being possible for provision to be made that the stator base has a bearing seat for receiving a roller bearing or a plain bearing. This configuration is advantageous with regard to the compact design in the axial direction. In particular, the bearing receptacle can be arranged on a stationary bolt which is connected to the stator in a form-fitting and/or force-fitting and/or material-fitting manner or is formed in one piece. In particular, the stator teeth can be connected to the stator base in a positive and/or non-positive manner and/or with a material bond.

The drive device can preferably be provided for use in a swing leaf drive. The drive device according to the invention can therefore in particular be a rotary vane drive device. In a swing leaf drive, a leaf is pivoted from a closed position, in which the leaf rests against a frame or frame, to an open position about a leaf axis by means of the drive device, with the torque being transmitted by means of a lever from the output shaft of the drive device to the door or to the door Frame is transferred. The drive device can be mounted on the wing, in which case a running rail can be arranged on the frame, or on the frame, in which case a running rail can be arranged on the wing. In addition to the drive device, the swing leaf drive can also include the lever and/or the running rail and/or the leaf. In particular when used on fire protection leaves, the drive device can have the closer module. In the event of a fire, the closer module ensures that the fire protection leaf closes, in particular without manual operation.

In particular, it can be that the drive device has a circuit board and the stator has one or more coils, the coils being electrically connected to the circuit board. According to the invention, a circuit board is a plate-shaped, in particular 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 several layers and/or have plastic and/or be flexible. In particular, the circuit board can be designed as a solid aluminum circuit board. This configuration is advantageous in terms of good heat conduction properties.

In particular, at least one coil, in particular each coil, can be integrated in or on the circuit board, in particular arranged in the material of the circuit board.

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, with at least one, in particular each, coil being electrically connected to the circuit board.

In particular, the coil can be soldered to the circuit board. In particular, the printed circuit board can extend at least partially over an installation space that is delimited by a lateral surface of the stator that is extended in the axial direction of the electrical machine and/or by a lateral surface of the rotor that is extended in the axial direction of the electrical machine. In particular, the circuit board can be arranged parallel to the stator base.

In particular, the stator can have the, in particular plate-shaped, stator base and a plurality of stator teeth protruding from the stator base in the axial direction of the machine, the circuit board being arranged in a first plane, in particular parallel to the stator base, the first plane being in a space between the Stator teeth and the rotor is located. In particular, the circuit board can rest on the stator teeth. In particular, the circuit board can be arranged in an air gap between the stator and the rotor.

In particular, the stator can have a plurality of stator teeth protruding from the stator base in the axial direction of the electrical machine, the circuit board being arranged in a second plane, in particular parallel to the stator base, the second plane being interrupted by at least one, in particular each stator tooth, of the stator will. This refinement 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 the number of openings corresponding to the number of stator teeth, through which the stator teeth pass. 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 of the teeth.

According to a further aspect of the invention, a method is specified 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 one Opening angle greater than 0° and/or from the open position at the opening angle greater than 0° to the closed position at the opening angle of 0° by means of a wing torque, the wing torque being a manual torque, in particular generated by a person, and a Drive torque includes. The drive torque is generated by the drive device with the motor-gear module, the closer module and a control module. The motor-gearbox module has an electrical machine, comprising the stator, in particular the only one, and the rotor, in particular the only one. The closer module has the energy store, in particular a mechanical one. The control module has a control device. The drive torque includes a machine torque generated directly or indirectly by the electric machine and a closer torque generated by the closer module. The machine torque is greater than 0 Nm for at least one of the opening angles greater than 0°.

In particular, this can be provided for any opening angle that is greater than 0°.

The term closing movement is used synonymously below with a movement from the open position to the closed position. The term opening movement is used synonymously below with a movement from the closed position to the open position.

The term -torque means torques exerted directly or indirectly on the wing.

The machine torque greater than 0 Nm means an amount of the machine torque. In this way, this means both a machine torque that supports the closing movement, in particular an additional closing torque, and a braking torque that counteracts the closing movement of the door, in particular a closer torque of the closer module.

In particular, the control module can be arranged in or on the closer module.

It is even more preferred that the motor/gearbox module and/or the closer module and/or the control module are arranged at least partially, in particular completely, within a higher-level covering, ie within a higher-level housing.

The terms superordinate housing and superordinate cladding are used synonymously in the following. In particular, the control module can have a control housing. The control device can be arranged entirely within the control housing. In particular, the control housing can be connected to the superordinate housing and/or to the motor-gear housing and/or to the closer housing in a non-positive and/or positive and/or material connection. 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 a press fit and/or a T-groove and/or a snap connection.

In particular, during a closing movement of the leaf from the open position to the closed position, in a first method step it can be provided that the electrical machine generates a first braking torque, the first braking torque being opposed to the closer torque of the closer module, so that the closing movement of the leaf slows down running and/or stopped.

In particular, the first method step can take place at an opening angle of less than 70°, in particular less than 60°, in particular less than 50°, in particular less than 40°, in particular less than 30°, in particular less than 20°, in particular less than 10° .

In particular, in a second method step that follows the first method step, the electric machine can generate an additional closing torque, which adds up to the closer torque of the closer module, so that the closing movement of the wing takes place with an increased drive torque, it being preferable for the electrical machine generates the additional closing torque when the wing has fallen below a first predetermined opening angle, and it can be particularly preferred that the first predetermined opening angle is in a range from 1 degree to 7 degrees, in particular in a range from 1 degree to 5 degrees, in particular in a range from 1 degree to 3 degrees.

In particular, the electric machine can only generate the additional closing torque if the predefined first opening angle is in a range from 1 degree to 7 degrees, in particular in a range from 1 degree to 5 degrees, in particular in a range from 1 degree to 3 degrees. This means that the electric machine does not generate any additional closing torque at other opening angles. With such small opening angles, it is ensured that the risk of injury is avoided, since, for example, no finger can fit into possible gaps between the sash and the frame.

In particular, the additional closing torque and/or the first braking torque can be adjusted via an operating element of the drive device.

In particular, a first opening angle range for carrying out the first method step and/or a second opening angle range for carrying out the second method step can be entered via an operating element of the drive device.

In particular, the opening angle can be determined by means of an angle measuring device of the drive device. It can be preferred that the angle measuring device is designed as at least one Hall sensor and/or as at least one inertial sensor. In particular, the inertial sensor can be arranged on a moving part, in particular on the rotor or on the wing or on the lever for connecting the drive device to the wing or to the frame. In particular, the Hall sensor and/or the inertial sensor can detect a position of the rotor.

In particular, the inertial sensor for detecting the six possible kinematic degrees of freedom can have three mutually orthogonal acceleration sensors for detecting the translational movement and/or three orthogonal gyroscopic sensors for detecting rotating movements.

Further details and advantages of the invention are to be explained below with reference to the exemplary embodiments shown in the figures. Herein shows:

1 shows an exemplary embodiment of a drive device according to the invention in a schematic sectional view;

FIG. 2 shows the drive device from FIG. 1 as a detail in a perspective view; FIG.

3 a transmission element as a detail in a plan view, 4 shows a further exemplary embodiment of a drive device with a planetary gear,

FIG. 5 shows the drive device from FIG. 4 with the ring gear removed; FIG. and

6 shows an axial flux machine in a schematic representation in section.

In the different figures, the same parts are always provided with the same reference numbers, which is why they are usually only described once.

Figure 1 shows a drive device 1 for pivoting a sash, in particular a door sash or a window sash. The drive device 1 has a motor-gear module 3, which has a motor-gear housing 4, an electric machine 6 with a machine axis X1, a gear 7 with an output shaft 8 rotatably mounted about an output axis X2 for connection to a lever 9 . The drive device 1 also has a closer module 11 which has a closer housing 12 and a mechanical energy store 13 . The drive device 1 has an interface element for forming an operative connection between the motor-gear module 3 and the closer module 11 .

The transmission 7 has a transmission ratio as a quotient of the speed of the rotor as a dividend and the speed of the output shaft, the transmission ratio being less than 125, preferably less than 100, particularly preferably less than 75.

The lever 9 is used to form a connection between the drive device 1 and the wing, ie with the exemplary door sash or window sash or with a frame, with the drive device 1 being mountable either on the frame or on the wing. Within the meaning of the invention, the term frame also includes a door frame or window frame. In particular, the lever 9 can be designed in such a way that a power supply for the electrical machine 6 and/or at least one control signal for the electrical machine 6 is transmitted via the lever 9 to the motor-transmission module 3, in particular to the electrical machine 6 and/or a Control module 26, are transferrable. The lever 9 is guided in a rail 2, which would be mounted in the illustrated embodiment on a frame, not shown.

As can be clearly seen in FIGS. 1 and 2, the output shaft 8 is arranged in a space between the machine axis X1 of the electric machine 6 and the energy store 13. The motor-transmission housing 4 has a first opening 16, the closer housing 12 having a second opening 17. As can be seen in Figure 1, the motor-transmission housing 4 and the closer housing 12 are arranged to each other that through the first opening 16 and the second opening 17, the closer module 11, in particular the energy storage 13, and the transmission 7, in particular the output shaft 8, are in operative connection with one another by means of the interface element.

The motor-gear module 3 and/or the closer module 11 is arranged at least partially, in particular completely, within a superordinate housing 5. The motor/gearbox housing 4 is connected to the superordinate housing 5 and/or to the closer housing 12 in a non-positive and/or positive and/or cohesive manner. The closer housing 12 is non-positively and/or positively and/or cohesively connected to the superordinate housing 5 . One or more such connections are designed, for example, in the form of at least one screw connection.

It can be seen in FIGS. 1 and 2 that the output axis X2 is parallel to the machine axis X1.

The closer module 11 has a translation element 18 for translating a linear movement of the energy store 13 into a rotational movement of the translation element 18 about an axis of rotation X3 of the translation element 18 . As can be seen by way of example in FIG. 1, the output axis X2 and the axis of rotation X3 of the transmission element 18 are spaced apart from one another and run parallel to one another. The transmission element 18 is designed as a cam disk, specifically as a heart-shaped lifting cam disk, and is rotatably mounted with a closer wheel 10 in a rotationally fixed manner.

For example, the mechanical energy store 13 is designed as a compression spring. The compression spring is connected to the translation element 18 via a link carriage 27 in order to translate the linear movement of the mechanical energy store 13 into a rotary movement of the translation element 18 . The plate carriage 27 has sliding elements 21, which can be seen in FIG. The plate carriage 27 can be seen in FIG.

The closer wheel 10 is arranged coaxially and non-rotatably with the translation element 18 for translating the linear movement of the energy store 13 into a rotational movement of the translation element 18 . The transmission 7 has a driven gear 22 , in particular a driven gear wheel, which is coaxial with the driven shaft 8 and non-rotatable, with the driven gear 22 being in engagement with the closer wheel 10 .

In the exemplary embodiment of FIGS. 1 and 2, the interface element is formed by the output wheel 22.

For example, the motor/gearbox housing 4 has a first wall 23 with an output opening 24 for the non-rotatable 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, with the Drive device 1 is designed such that both the second wall and the third wall facing the wing, so to be attached to the exemplary door leaf. The same can apply to the closer housing 12 . The motor-gear housing 4 but also the closer housing 12 can each be cuboid in order to enable assembly on both sides.

The control module 26, which has a control device, can also be seen in FIG. The control module 26 is complete, is arranged inside the superordinate housing 5 of the drive device 1 .

Figure 3 shows a special embodiment, wherein the transmission element 18 is designed as a cam, specifically as a heart-shaped lifting cam. As can also be seen in FIG. 3, a fixed axle body 19 is arranged, with the transmission element 18 and the closer wheel 10 being rotatably mounted on the axle body 19 .

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

As a planetary gear, the gear 7 has at least one tungsten stage. Such a tungsten stage has a first gear stage and a second gear stage. The first gear stage includes a sun gear, a plurality of first planets 31 fastened 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 cannot be seen in FIGS. 4 and 5 because of the section chosen. The second gear stage includes a second rotatable Ring gear 33, second planets 32 which are non-rotatable with the first planet 31, in particular in one piece. The second planets 32 drive the second ring gear 33. The second ring gear 33 forms the power output of the planetary gear. In Figure 5, the second ring gear is removed.

The gear 7 according to the embodiment of Figures 4 and 5 is designed as a combination of planetary gear and 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 closer wheel 10 of the closer module 11. In the exemplary embodiment of FIGS. 4 and 5, the closer wheel 10 forms the interface element

In the embodiment of Figures 4 and 5, the output axis X2 is coaxial with the machine axis X1.

In the exemplary embodiments described, the electrical machine 6 is designed as an axial flow machine.

The electrical machine 6 is shown in principle as a detail in FIG. 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 jacket 45 , the stator 36 having a plurality of coils 41 and each of the coils 41 being wound around the tooth jacket 45 and therefore indirectly via the tooth jacket 45 around the stator tooth 39 . The stator teeth 39 pass through a circuit board 44 on which the coils 41 are contacted.

It can be seen in FIG. 6 that the stator 36 also includes a fixed bolt 50 , the bolt 50 having a bearing mount 46 for accommodating a roller bearing 47 . A roller bearing 47 with balls 47' is shown in FIG. 6 as an example. The drive device 1 includes the roller bearing 47 for the rotatable mounting of the rotor 37 relative to the stator 36, the roller bearing 47 being accommodated on the bearing mount 46 of the bolt 50. The rotor 37 is rotatably mounted on the stator 36 by means of the roller bearing 47 . In an embodiment that is not shown, a bearing receptacle can be provided directly on the stator base, on which a roller bearing can be accommodated. The rotor 37 includes a plurality of 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, everyone stands Permanent magnet 48 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, from.

As can best be seen from FIGS. 1 and 2, the gear 7 has a first gear element 42 which can be rotated coaxially with the machine axis X1 and which is in particular non-rotatably connected to the rotor 37 . The transmission 7 also has a second transmission element 43, which is operatively connected to the first transmission element 42, with an axis of rotation X4 of the second transmission element 43 in an installation space between the machine axis X1 and an outer lateral surface of the rotor that is virtually extended in the axial direction of the electric machine 6 37 or an outer lateral surface of the stator 36 that is virtually extended in the axial direction of the electrical machine 6, in particular parallel to the machine axis X1.

Reference character list:

1 drive device

2 running track

3 engine-gearbox module

4 engine-gear box

5 parent housing

6 electric machine

7 gears

8 output shaft

9 levers

10 closer wheel

11 normally open module

12 NO housing

13 mechanical energy storage

16 first opening in 4

17 second opening in 12

18 translation element

19 axle body

21 sliding elements

22 driven gear from 7

23 first wall of 4

24 output opening

26 control module

27 strap wagons

31 planets

32 planets

33 ring gear

34 external teeth

36 stator

37 rotors

38 stator base

39 stator teeth

41 coil

42 first gear element

43 second gear element

44 circuit board 45 tooth jacket

46 bearing mount

47 rolling bearings

47' balls of rolling bearing 47 48 permanent magnet

49 rotor plate

50 bolts

Claims

23

Drive device (1) for pivoting a wing about a wing axis, in particular a door wing or a window wing, with a motor-gear module (3) comprising an electric machine (6), the electric machine

(6) has one, in particular single, stator (36) and one, in particular single, rotor (37) rotatable about a machine axis (X1), and having a gear

(7), the drive device (1) having an output shaft (8) rotatable about an output axis (X2), characterized 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 output shaft (8), the transmission ratio being less than 125, preferably less than 100, particularly preferably less than 75.

2. Drive device (1) according to claim 1, characterized in that the electric machine (6), in particular as a motor, has a ratio of the maximum torque to the axial extent of the electric machine (6) which is greater than 30 Nm/ m, preferably greater than 100 Nm/m, particularly preferably greater than 200 Nm/m.

3. Drive device (1) according to one of the preceding claims, characterized by a closer module (11) with a mechanical energy store (13) and a transmission element (18) for converting the linear movement of the mechanical energy store (13) into a rotary movement of the translation element (18).

4. Drive device (1) according to one of the preceding claims, characterized by an interface element for forming an operative connection between the motor-gear module (3) and the closer module (11), preferably that the interface element comprises at least one gear.

5. Drive device (1) according to claim 4, characterized in that the interface element in a motor-gear housing (4) of the motor-gear module (3) and / or in a closer housing (12) of the closer module (11) protrudes.

6. Drive device (1) according to one of Claims 3 to 5, characterized in that the interface element is formed at least partially by a closer wheel (10), in particular a closer gear wheel, or is connected to the closer wheel (10) in is engaged, the closer wheel (10) being connected coaxially, in particular non-rotatably, to the transmission element (18), preferably that the transmission element (18) and the closer wheel (10) are preferably positively and/or non-positively and/or are integrally connected, are preferably formed in one piece. Drive device (1) according to Claim 6, characterized in that the closer module (11) has a fixed axle body (19), the transmission element (18) and the closer wheel (10) being rotatably mounted on the axle body (19). . Drive device (1) according to one of Claims 3 to 7, characterized in that the transmission (7) has a driven wheel (22), in particular a driven gear wheel, which is coaxial with the driven shaft (8) and is preferably non-rotatable, preferably that the driven wheel (22) forms the interface element or engages with the interface element. Drive device (1) according to one of the preceding claims, characterized in that the gear (7) is designed as a toothed gear, preferably as a multi-stage spur gear and/or as a planetary gear or as an eccentric gear. Drive device (1) according to one of the preceding claims, characterized in that the gear (7) has a first gear element (42) which can be rotated coaxially with the machine axis (X1), in particular that the first gear element (42) is non-rotatably connected to the rotor (37 ) is connected, preferably that the transmission (7) has a second transmission element (43) which is operatively connected to the first transmission element (42), particularly preferably that an axis of rotation (X4) of the second transmission element (43) in a space between the machine axis (X1) and an outer lateral surface of the rotor (37) that is virtually extended in the axial direction of the machine or an outer lateral surface of the stator (36) that is virtually extended in the axial direction of the electrical machine (6), in particular parallel to the machine axis (X1) , runs. Drive device (1) according to claim 9 or 10, characterized in that the first and the second transmission element (42,43) or the entire transmission (7) is arranged completely in one space, the space being virtually in the axial direction of the electrical Machine (6) extended outer surface of the Rotor (37) or by a virtual in the axial direction of the electrical machine (6) extended outer surface of the stator (36). Drive device (1) according to one of the preceding claims, characterized in that the electrical machine (6) is designed as an axial flux machine, preferably that the stator (36) has one or more coils (41) and the rotor (37) has one or more Has permanent magnets. Drive device (1) according to one of the preceding claims, characterized in that the stator (36) has a stator base (38) and a plurality of stator teeth (39) protruding from the stator base (38), in particular in the axial direction of the electrical machine (6). , A coil (41) being wound directly or indirectly around at least one of the stator teeth (39), in particular around each stator tooth (39). Drive device (1) according to one of the preceding claims, characterized in that the electric machine (6) comprises a plurality of stator teeth (39) and a plurality of permanent magnets, a ratio of the number of permanent magnets as a dividend to the number of stator teeth (39) being between 1 1 and 1.6, preferably between 1.2 and 1.4, particularly preferably 4/3. Use of a drive device (1) according to one of the preceding claims in a swing leaf drive.