DE202011001541U1 - sliding door - Google Patents

Abstract

Sliding door, the wings (2, 3) via support rollers (8, 32) on a mounted on a wall or in front of a wall or the like running rail (5, 33) are movable, wherein the wings (2, 3) preferably made of glass, plastic , Wood or metal or the like, characterized in that in each case at least one support roller (32) of the wings (2, 3) next to the support function at the same time as a stationary variable drive device (4, 7) is formed and on a round track rail (5) of two running surfaces (11, 12), which are formed current-carrying and electrically isolated from each other by an insulating piece (10), wherein the drive device (4, 7) is designed as an electrically commutating, brushless external rotor motor.

Description

The invention relates to a sliding door according to the preamble of claim 1.

Such sliding doors are, preferably made of glass, well known and are used for the interior of buildings. In this case, the sliding door essentially consists of a running rail which is fastened to a wall and on which, by means of rollers, the wings can be moved in a suspended manner. The wings can be struck directly with the rollers, but it is also possible that the wings are brought about fittings or tabs or the like with the support and rollers in operative connection.

A friction wheel sliding door drive for lifts are the WO 98/04801 A1 again. At least one sliding leaf is guided by means of guide rollers on a guide. In this case, at least one of the guide rollers is designed as a door moving motor role in the form of an external rotor. The motor can be designed as a DC motor with permanent magnets.

In the AT 319 850 B is a running rail made of metal with an inserted sliding coating made of plastic described. In this case, the sliding coating is formed by a profile body, which constitutes only a part of the rail profile. The rail can for example be formed from a tube which is characterized along a surface line for the purpose of forming a longitudinal groove accordingly. The sliding coating used here has the task of increasing the load capacity of metal rails without the additional use of grease.

An electrical machine which has at least one permanent-magnet pole pair and at least one conductor track which can be flowed through by an electric current to generate an exciter field is known from US Pat DE 32 31 966 A1 refer to. The magnetic pole pair is designed in the form of a permanent magnet and designed disk-shaped. The electrical track located between the permanent magnets is designed as a flat coil and mounted at least one layer on a support body. In this case, each, attached to the support body, current-flowable conductor track is arranged at least with the region of its effective portion within the geometry of the rotating permanent magnet.

Of the DE 103 35 688 A1 is the design of air coils, which are completely penetrated within rotating electrical machines by the magnetic field to remove. This design leads to electrical machines with high material exploitation and high efficiency and high torque in motors. The invention is based on the researched by Faraday ideal conditions for direct energy conversion between electric field and electrical conductor. The ideal conditions in end coils for different operations of the coils depending on the application are implemented in each case to a maximum extent.

The object of the present invention is to provide such manually operated sliding doors with at least one wing, which are mounted on wall brackets on a wall and guarantee the mobility of the wings by means of a running rail so as to automate this by using cost-effective configurations and assemblies.

The object of the invention is solved by the features of claim 1. The subclaims reflect a further embodiment of the inventive concept.

The invention proposes to automate the usually manually operated sliding door to the effect that one of the support rollers for each separate wing next to the support function is also designed as a drive device. On the one hand, such an embodiment would make the use of a drive device outwardly unrecognizable and, on the other hand, such a drive device would be quickly accessible in the event of a repair since it is not concealed behind a fighter, as is usually the case with sliding doors. Also, such a configuration in which the support roller is the drive device at the same time, inexpensive to produce.

In order to provide such a drive device, which will be discussed further below, with electrical energy, it is necessary that in a first preferred embodiment, the running rail, which may be preferably round or square, includes two treads electrically through an insulating piece are separated from each other. By this measure, it is possible to use, for example via the wall brackets, the two running surfaces of the running rail as electrical poles and form with corresponding electrical lines, which are guided for example by the wall brackets, as electrical conductors. Preferably, such systems are supplied with a voltage that is in the security area and thus below the contact voltage of 63 V.

In a second preferred embodiment of the track rail, this can be equipped with a contact insert, which consists of an insulating material. Within an example rectangular or square-shaped recess of the track, the contact insert is used. The contact insert has formed on its upper side corresponding contacts or contact rails which are connected at the other end to the previously described electrical connections via the wall bracket.

The drive device preferably consists of an electronically commutated brushless external rotor motor. In this case, the housing of the motor, and thus of the drive device, essentially consists of two circular housing shells, which are separated from each other by a central piece and have two spaced running surfaces. The center piece is designed as an insulating piece and thus makes it possible in a first preferred embodiment that the housing shells with the previously described first preferred embodiment of the track contact with the two above-described running surfaces of the track rail. Thus, the housing shells are designed accordingly as electrical conductors. By attached to the housing shells electrical conductors a control and regulation module is supplied with electrical energy and is thus part of the drive device. The control module is located inside the drive device. In addition to the control and regulating module, corresponding sensors or position-measuring devices or incremental encoders or the like can also be integrated into the drive device.

The control unit is designed so that it can be equipped, for example, for different applications with different programs. Such programs include z. B. a start-up phase and a braking phase of the drive device depending on the version. The course of the starting phase and the braking phase can be designed differently as needed. Further, for example, the drive device in a program learn the course of a route of a connected device itself and then store these characteristics themselves. The learnable or changeable parameters also include a speed limit, a current limit or a force limit. These programs are then preferably stored in at least one non-volatile memory. Depending on the application and compilation of the drive device from the individual modules another software is programmed into the control unit.

The winding is to be regarded as a self-supporting, executed without carrier flat, annular disc winding. The disk winding is designed as a self-supporting air coil with at least two separate windings, and depending on the number of phases and multiple windings can be performed and thus a multi-phase operation is possible. The individual windings are bifilar and at the same time meandering wound in such a way that the bifilarity is not executed in opposite directions. Thus, the individual windings are bifilar wound and connected in series in the same direction, so that a disc winding is created, which has a double turn number about four times the inductance over conventional coils. By such a winding arrangement is achieved that add in the working gap, the magnetic fields and at the same time cancel this in the winding head. By canceling the electric fields in the windings losses are reduced, which are otherwise converted into heat. The conductor material for the individual windings preferably consists of one or a plurality of twisted strands. Such a winding scheme means with less space a higher performance of the drive device.

Such a winding is impregnated by means of a corresponding temperature-resistant resin, wherein the resin can also be reinforced with, for example, glass fibers. To increase the stability of the winding, this can still be provided with a fabric, at least outdoors. Such a fabric may for example consist of glass fibers or a glass fiber mat.

In a further step, in order to increase the efficiency of the drive device, the resin or the potting compound, which are used to hold the individual winding wires, can also be mixed with a graphite powder or granules or with a ferromagnetic material and thus enriched.

In a further inventive step it is proposed that the permanent magnet systems used preferably consist of a magnetic material of the rare earths. These magnetic materials stand for high efficiency and guarantee high efficiency for such a drive device with the winding described above and a small, small air gap between the winding and the permanent magnets. The magnet material used is isotropic materials with an approximately linear characteristic in the second quadrant. Furthermore, materials can also be used in which the coercive field strength is substantially greater than the ratio of remanence to the magnetic field constant. Such materials are sintered or plastic bonded ferrites or rare earth magnets.

The rotor interacting with the winding constituting the stationary stator consists essentially of the permanent magnet systems, which are composed of a multiple pole length of alternating polarity (north / south) without iron in between. A pole length consists of several magnetized and arranged according to a specific scheme permanent magnets. The permanent magnets are arranged so that they have a directional, amplified, magnetic flux within a pole length at a pole face directed towards the winding. This also contributes to an increase in the efficiency of the drive device.

To achieve such an amplified magnetic directed flux, the pole length is sized to be a length of two equally long magnets plus a shorter magnet. Preferably, the length of the shorter magnet is dimensioned as half the length of the aforementioned equal length magnets.

In order to intensify the targeted direction of the magnetic flux even more, is directed to the pole face of the two magnets of equal length, another magnet, but only a small, preferably substantially the quarter height of the aforementioned magnets, pole height has. Thus, there is a pole length of preferably four magnets whose magnetization directions have been chosen so that on the flat magnet and thus on its pole face an enhanced directional magnetic flux is present. The different preferred magnetization is a so-called Halbach system. Such a Halbachmagnetsystem generates a particularly homogeneous magnetic field. In the case of the permanent magnet arrangement according to the invention, virtually every single permanent magnet thus receives a specific preferred magnetization direction. This results in a deviation from the homogeneity of the magnetic field generated in the winding due to the size of the individual magnets. In order to keep a deviation in the magnetic field as low as possible, it is therefore necessary to make a fine segmentation. Although this increases the production cost, but it creates a more homogeneous magnetic field.

The permanent single magnets are preferably made of isotropic permanent magnet material. Because the entire magnet system consists of a multiplicity of permanent magnet magnet systems arranged close to one another, it is necessary for the preferred magnetization direction also to vary locally within the individual segments.

The magnet material used is anisotropic materials with an approximately linear characteristic in the second quadrant. Furthermore, materials can also be used in which the coercive field strength is substantially greater than the ratio of remanence to the magnetic field constant.

Each pole length has a different alternating polarity, i. H. At each successive pole length, the North Pole and the South Pole alternate, the individual pole poles directly joining each other without gaps and intermediate poles of iron or the like.

On the opposite side (back to the pole face) of the individual magnets may be a ferromagnetic shield, which must have only a small thickness, since in this area no large magnetic flux is present, because a magnetic flux attenuation by the selected magnetic directions of the poles of single magnets is present. However, there may also be a magnetic inference.

In order to achieve a high efficiency of the assembled from different modules drive device, it is also necessary to use a control and regulation unit as a module, which is precisely matched to the winding and the cooperating permanent magnet systems. This reconciliation is achieved through the stored software which is reprogrammable for certain applications. For this purpose, specific parameters are changed in the open-loop and closed-loop control unit, which bring about a change or adaptation of the running behavior of the drive device in connection with the stored programs.

In this first preferred embodiment, a supply of the control and regulating module is made over the circumference of the housing shells, which in turn performs an energization of the windings. The windings are also embedded within the housing shells as disc-shaped windings.

Between the windings a disk is stationary, which has preferably placed on or on its outer periphery permanent magnets. With the magnets mounted on a standing axle, the housing shells of the drive device are rotatably placed about bearings around the magnets. With a corresponding energization by the control and regulation module, it will come to a movement due to repulsive forces between the magnets and the windings.

The axis of the drive device serves at the same time for attachment to the wing directly or via the interposition of a fitting or the like.

The winding is to be regarded as a self-supporting, executed without carrier flat, annular disc winding. The disk winding is designed as a self-supporting air coil with at least two separate windings, and depending on the number of phases and multiple windings can be performed and thus a multi-phase operation is possible. The individual windings are bifilar and at the same time meandering wound in such a way that the bifilarity is not executed in opposite directions. Thus, the individual windings are bifilar wound and connected in series in the same direction, so that a disc winding is created, which has a double turn number about four times the inductance over conventional coils. By such a winding arrangement is achieved that add in the working gap, the magnetic fields and at the same time cancel this in the winding head. By canceling the electric fields in the windings losses are reduced, which are otherwise converted into heat. The conductor material for the individual windings preferably consists of one or a plurality of twisted strands. Such a winding scheme means with less space a higher performance of the drive device.

Such a winding is impregnated by means of a corresponding temperature-resistant resin, wherein the resin can also be reinforced with, for example, glass fibers. To increase the stability of the winding, this can still be provided with a fabric, at least outdoors. Such a fabric may for example consist of glass fibers or a glass fiber mat.

In a further step, in order to increase the efficiency of the drive device, the resin or the potting compound, which are used to hold the individual winding wires, can also be mixed with a graphite powder or granules or with a ferromagnetic material and thus enriched.

In a further inventive step it is proposed that the permanent magnet systems used preferably consist of a magnetic material of the rare earths. These magnetic materials stand for high efficiency and guarantee high efficiency for such a drive device with the winding described above and a small, small air gap between the winding and the permanent magnets. The magnet material used is isotropic materials with an approximately linear characteristic in the second quadrant. Furthermore, materials can also be used in which the coercive field strength is substantially greater than the ratio of remanence to the magnetic field constant. Such materials are sintered or plastic bonded ferrites or rare earth magnets.

The rotor interacting with the winding constituting the stationary stator consists essentially of the permanent magnet systems, which are composed of a multiple pole length of alternating polarity (north / south) without iron in between. A pole length consists of several magnetized and arranged according to a specific scheme permanent magnets. The permanent magnets are arranged so that they have a directional, amplified, magnetic flux within a pole length at a pole face directed towards the winding. This also contributes to an increase in the efficiency of the drive device.

To achieve such an amplified magnetic directed flux, the pole length is sized to be a length of two equally long magnets plus a shorter magnet. Preferably, the length of the shorter magnet is dimensioned as half the length of the aforementioned equal length magnets.

In order to intensify the targeted direction of the magnetic flux even more, is directed to the pole face of the two magnets of equal length, another magnet, but only a small, preferably substantially the quarter height of the aforementioned magnets, pole height has. Thus, there is a pole length of preferably four magnets whose magnetization directions have been chosen so that on the flat magnet and thus on its pole face an enhanced directional magnetic flux is present. The different preferred magnetization is a so-called Halbach system. Such a Halbachmagnetsystem generates a particularly homogeneous magnetic field. In the case of the permanent magnet arrangement according to the invention, virtually every single permanent magnet thus receives a specific preferred magnetization direction. This results in a deviation from the homogeneity of the magnetic field generated in the winding due to the size of the individual magnets. In order to keep a deviation in the magnetic field as low as possible, it is therefore necessary to make a fine segmentation. Although this increases the production cost, but it creates a more homogeneous magnetic field.

The permanent single magnets are preferably made of isotropic permanent magnet material. Because the entire magnet system consists of a multiplicity of permanent magnet magnet systems arranged close to one another, it is necessary for the preferred magnetization direction also to vary locally within the individual segments.

The magnet material used is anisotropic or isotropic materials with an approximately linear characteristic in the second quadrant. Furthermore, materials can also be used in which the coercive field strength is substantially greater than the ratio of remanence to the magnetic field constant.

Each pole length has a different alternating polarity, i. H. At each successive pole length, the North Pole and the South Pole alternate, the individual pole poles directly joining each other without gaps and intermediate poles of iron or the like.

On the opposite side (back to the pole face) of the individual magnets may be a ferromagnetic shield, which must have only a small thickness, since in this area no large magnetic flux is present, because a magnetic flux attenuation by the selected magnetic directions of the poles of single magnets is present. However, there may also be a magnetic inference.

The integrated within the housing halves control unit is such that it is equipped for different applications with different programs or can be equipped and thus can be used for a wide range of applications. Such programs include, for example, a start-up phase or a braking phase of the drive device, depending on the customer's wishes. The course of the starting phase and the braking phase can be designed differently depending on the needs of the system. Furthermore, for example, the drive device with a program to learn the course of the route of a door system itself and then store these characteristics themselves. The learnable or changeable parameters include, in particular, a speed limitation, a current limitation, a force limitation or a change in the output torque. These individual programs are then preferably stored in at least one non-volatile memory.

To increase the efficiency, it is necessary that the control unit is precisely matched to the relationships between the individual windings and the permanent magnets. This tuning is preferably achieved via stored software which can be programmed accordingly for certain applications or can be achieved by replacing a memory.

In a second preferred embodiment, the drive device may be designed so that the housing shells are not used as live elements. In such a case, reference is made to the above description, in which a running rail is used, in which an insulating piece is introduced, which has a contact insert. This contact insert is equipped with corresponding contact tracks or busbars accordingly and allows it to be ensured by appropriate sliding contacts or the like, which are mounted within the insulating piece between the two housing shells, a power supply of the control unit. In this case, the contacts of the drive device can be performed correspondingly resilient.

In the preferred embodiments, the disc-shaped windings have been described on both sides of the permanent magnets, it is of course also possible that the windings are formed only on one side of the permanent magnets.

The invention will be explained in more detail with reference to various possible schematically illustrated embodiments or the track on the drawings.

It shows:

1 : A schematic sliding door system in front view;

2 a drive unit in conjunction with a track rail;

3 a section through a first preferred embodiment of a drive device;

4 A second preferred embodiment of a drive device in section.

Inside a wall 1 is a breakthrough, with sliding wings 2 . 3 can be closed or opened, shown. Here are the wings 2 . 3 in this embodiment via tabs 9 on running and carrying rollers 8th . 32 suspended. The rollers 8th . 32 move on a wall horizontally 1 secure running rail 5 that end up with appropriate stoppers 6 for the wings 2 . 3 Is provided.

According to the 2 is the first preferred embodiment of the track 5 made of three parts, with insulation in the middle 10 is present, to which laterally placed treads 11 and 12 connect. The entire track 5 has in this embodiment a round cross-section, which is not necessarily necessary for the invention. It is also possible that the track rail 5 could have a polygonal cross-section. However, for aesthetic reasons, the round cross-section has preferably been established in practice. On the track 5 is a first embodiment of a drive device 7 been reproduced. The drive device 7 consists essentially of housing shells 14 . 15 which are spaced by a center piece 13 , This centerpiece 13 is also to be regarded as insulating, wherein by the contact of the treads 16 the housing shells 14 . 15 in contact with the treads 11 . 12 come. Because of the treads 11 . 12 have, not shown in this illustration, electrical connections, would also electrical energy through the treads 11 . 12 on the housing shells 14 . 15 transfer.

In a first preferred embodiment of the 3 is the drive device 7 have been shown in a sectional view. Within the already out 2 known housing shells 14 . 15 are windings 22 . 23 , which are designed as disc windings embedded. At the same time is in at least one of the housing shells 14 . 15 a control module with integrated. The electrification of the control module 21 is via electrical connections 26 in conjunction with the housing shells 14 . 15 realized. In addition to the control and regulation module 21 is also a position detection device or position measuring device 29 available.

By the spacing over the middle piece 13 the housing shells 14 and 15 an interior space forms within the drive device 7 partially by a magnet holder 31 with magnets attached to its circumference 24 is taken. Between the magnets 24 and the windings arranged laterally therefrom 22 and 23 There is an air gap on each side 27 present as low as possible. The windings 22 . 23 are designed as disc-shaped windings. It is possible that these windings consist of several individual windings so as to be able to operate such a drive device in multiphase operation.

The magnet holder 31 is on an axis 28 attached, the axis 28 is stationary and thus the magnet holder 31 no rotation with the magnet 24 performs. On the axis 28 are also the housing shells 14 and 15 however, over stock 19 . 20 rotatably mounted. Thus, the existing drive device with the housing shells 14 . 15 on the track 5 move.

On the fixed axis 28 is about a fixture 17 in connection preferably with an intermediate piece of the wings 2 and 3 each directly or with the interposition of a tab 9 appropriate. This is the attachment 17 preferably via a screw connection 30 within the axis 28 set.

According to a second preferred embodiment of a drive device 4 is the area of the power supply for the drive device 4 and thus the execution of a running rail 33 been trained differently. Inside the track 33 is a contact insert 34 present, in the corresponding contacts 41 and 42 for the electrical power supply of the control and regulating module 21 available. At the contacts 41 . 42 are electrical connections 39 . 40 , the side of the track 33 about holes 35 and 36 be led out. With the track 33 is a wall holder 37 partially shown, in which also a hole 38 is present, through which the electrical connections 39 . 40 be passed. Within a center piece 25 are between the housing shells 14 . 15 also insulating sliding contacts 33 . 34 appropriate. These sliding contacts work with those within the track 33 embedded contacts 41 . 42 in the way that together about within the drive device 4 existing electrical lines 26 the electrical energy of the connections 39 . 40 is forwarded to the control module.

It turns out that in this illustration, the sliding door on the use of a transmission both in the drive device 7 as well as the drive device 4 can be waived.

The design of the sliding door with at least one wing 2 . 3 is not limited to an embodiment on the material glass, but it can also be used plastic, wood, metal or the like.

Furthermore, both support rollers can 8th . 32 as drive devices 7 be formed.

LIST OF REFERENCE NUMBERS

1

wall

2

wing

3

wing

4

driving device

5

runner

6

stopper

7

driving device

8th

supporting role

9

flap

10

insulation

11

tread

12

tread

13

centerpiece

14

shell

15

shell

16

tread

17

attachment

18

connecting piece

19

camp

20

camp

21

Control rule module

22

winding

23

winding

24

magnet

25

centerpiece

26

electrical connections

27

air gap

28

axis

29

Position measuring device

30

screw

31

magnetic holder

32

supporting role

33

runner

34

contact insert

35

drilling

36

drilling

37

wall mount

38

drilling

39

electrical connection

40

electrical connection

41

Contact

42

Contact

43

sliding contact

44

sliding contact

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 98/04801 A1 [0003]
• AT 319850 B [0004]
• DE 3231966 A1 [0005]
• DE 10335688 A1 [0006]

Claims (25)

Sliding door whose wings ( 2 . 3 ) via carrying rollers ( 8th . 32 ) mounted on a wall or in front of a wall or the like running track ( 5 . 33 ) are movable, the wings ( 2 . 3 ) preferably made of glass, plastic, wood or metal or the like, characterized in that in each case at least one support roller ( 32 ) the wing ( 2 . 3 ) in addition to the support function at the same time as a portable drive device ( 4 . 7 ) is formed and on a round track ( 5 ), which consist of two treads ( 11 . 12 ), the current-carrying formed and by an insulating piece ( 10 ) are electrically separated, the drive device ( 4 . 7 ) is designed as an electrically commutating, brushless external rotor motor. Sliding door according to claim 1, characterized in that the running rail ( 33 ) a contact insert ( 34 ), in which contacts ( 41 . 42 ), which are connected to electrical lines ( 39 . 40 ) via a wall bracket ( 37 ) or the like are supplied with electrical voltage and with sliding contacts ( 43 . 44 ) or the like of the drive device ( 4 ), so that the control module ( 21 ) to provide electrical energy. Sliding door according to one or more of the preceding claims, characterized in that the running surfaces ( 11 . 12 ) of the track ( 5 ) or the contact insert ( 34 ) of the tread ( 33 ) are connected to a stationary power supply. Sliding door according to one or more of the preceding claims, characterized in that the power supply via at least one wall mount ( 37 ) or the like of the running track ( 5 . 33 ) is realized. Sliding door according to one or more of the preceding claims, characterized in that the housing of the drive device ( 7 ) essentially consists of two circular housing shells ( 14 . 15 ) passing through a center piece ( 13 ) insulating isolated treads ( 16 ) in connection with the treads ( 11 . 12 ) of the track ( 5 ) a control module contained in the housing ( 21 ) is supplied with electrical energy. Sliding door according to one or more of the preceding claims, characterized in that inside housing shells ( 14 . 15 ) Windings ( 22 . 23 ), which are electrically connected to the control module ( 21 ) are connected. Sliding door according to one or more of the preceding claims, characterized in that the sliding contacts ( 43 . 44 ) or the contacts ( 41 . 42 ) are designed resilient. Sliding door according to one or more of the preceding claims, characterized in that the housing shells ( 14 . 15 ) by means of bearings ( 19 . 20 ) on one axis ( 28 ) are rotatably mounted. Sliding door according to one or more of the preceding claims, characterized in that the axis ( 28 ) for direct or indirect attachment to the wings ( 2 . 3 ) serves. Sliding door according to one or more of the preceding claims, characterized in that on the axis ( 28 ) via a magnet holder ( 31 ) Magnets ( 24 ) which are secured via respective air gaps ( 27 ) between the coils ( 22 . 23 ) cooperate with these, the coils ( 22 . 23 ) are disc-shaped and preferably may consist of several windings. Sliding door according to one or more of the preceding claims, characterized in that the drive device ( 4 . 7 ) a position measuring device ( 29 ) includes. Sliding door according to one or more of the preceding claims, characterized in that the winding ( 22 . 23 ) self-supporting, preferably provided with a potting compound. Sliding door according to one or more of the preceding claims, characterized in that the potting compound is mixed with a graphite powder or a granulate or a ferromagnetic material. Sliding door according to one or more of the preceding claims, characterized in that the winding ( 22 . 23 ) is provided with a potting compound and a fabric web, wherein the fabric web of glass fibers or the like is preferably. Sliding door according to one or more of the preceding claims, characterized in that the magnets ( 24 ) consist of one or more elements of the rare earths. Sliding door according to one or more of the preceding claims, characterized that the control module ( 21 ) can be connected to a wide variety of supply voltages. Sliding door according to one or more of the preceding claims, characterized in that the control and regulation module ( 21 ) comprises at least one microprocessor and at least one memory. Sliding door according to one or more of the preceding claims, characterized in that the at least one memory is a non-volatile memory, preferably an EEprom. Sliding door according to one or more of the preceding claims, characterized in that different programs are stored in the at least one memory. Sliding door according to one or more of the preceding claims, characterized in that the control unit ( 21 ) has saved a start-up and braking phase in a program. Sliding door according to one or more of the preceding claims, characterized in that the control unit ( 21 ) includes a current limit that is fixed or programmable. Sliding door according to one or more of the preceding claims, characterized in that the control unit ( 21 ) has a speed stabilization. Sliding door according to one or more of the preceding claims, characterized in that the control unit ( 21 ) allows programming of the delivered torque. Sliding door according to one or more of the preceding claims, characterized in that the drive device ( 4 . 7 ) can be operated on a single-phase or multi-phase network. Sliding door according to one or more of the preceding claims, characterized in that both carrying rollers ( 8th . 32 ) as a drive device ( 4 . 7 ) are formed.

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