Linear motor for moving locking mechanism and manufacturing method thereof, locking device for sliding door equipment and sliding door equipment

Abstract

The invention relates to a linear motor for moving a locking mechanism (13) between a release position and a locking position, the linear motor comprising a housing (11), a stator (21) arranged in the housing (11) and a rotor (24) which can be translated relative to the stator (21), wherein the rotor (24) is movably supported by means of a plurality of, in particular four, rolling bearings (26) or sliding bearings arranged on the stator (21) and / or on the housing (11).

Description

Technical Field

[0001] The invention relates to a linear motor for moving a locking mechanism between a release position and a locking position. In addition, the invention also relates to a method for producing such a linear motor. Further subjects of the invention are a locking device for a sliding door installation and a sliding door installation. Background Art

[0002] The present invention can be applied in a locking device having a locking mechanism, which can be moved between a release position and a locking position. Such a locking device is used, for example, in a sliding door installation to lock a sliding door element.

[0003] In linear motors, a relatively large attractive force usually acts between the stator and the rotor of the linear motor. The attractive force usually acts transversely to the direction of movement of the rotor and must be supported by suitable measures. Therefore, the rotor is usually held in a guide via a sliding or rolling bearing, which is arranged at a certain distance from the stator of the linear motor, in particular from the stator core and the coils of the stator. This results in a relatively bulky structure of the linear motor, so that a locking device equipped with the linear motor requires a relatively large construction space. Summary of the invention

[0004] Against this background, the object is to provide a locking drive which is as compact as possible for moving the locking mechanism.

[0005] In order to achieve this object, a linear motor is proposed for moving a locking mechanism between a released position and a locked position, the linear motor comprising a housing, a stator arranged in the housing and a rotor that can move translationally relative to the stator, wherein the rotor is movably supported by means of a plurality of, in particular four, rolling bearings or sliding bearings arranged on the stator and / or the housing.

[0006] The linear motor according to the invention forms a compact locking drive for moving a locking mechanism. Due to the provision of rolling bearings or sliding bearings on the stator and / or housing of the linear motor, the distance between the rotor and the stator can be reduced. A small air gap can thus be achieved between the stator and the rotor, which results in the additional advantage that the entire linear motor is less sensitive to tolerances and the forces that can be generated by the linear motor are increased.

[0007] In the sense of the present invention, a linear motor is understood to be an electric linear motor. Preferably, the linear motor comprises a translationally movable, in particular linearly movable rotor. Advantageously, the rotor is arranged to be supported so as to be movable relative to the stator of the linear motor, so that the air gap between the stator and the rotor is constant. Preferably, the magnetic field lines in the air gap extend perpendicularly to the direction of movement of the rotor and / or perpendicularly to the direction of force in which a force effect can be generated by the linear motor.

[0008] According to an advantageous embodiment, the rolling bearing or sliding bearing each has an outer bearing ring, in particular, against which the rolling surface of the rotor rests. This simplifies the installation of the rotor on the housing and / or the stator during the production of the linear motor. Preferably, the inner bearing ring of the rolling bearing or sliding bearing is each fastened to a fastening element, which is arranged on the stator and / or the housing.

[0009] Preferably, both rolling bearings or sliding bearings are fastened to a common fastening element, in particular a shaft, which is arranged in a stator recess in the stator and / or in a housing recess in the housing. It is thus possible during the production of the linear motor to first fasten the rolling bearing or sliding bearing to the fastening element and then to insert the fastening element together with the rolling bearing or sliding bearing into the stator recess and / or the housing recess.

[0010] According to an advantageous embodiment, the stator has a stator core having three, preferably exactly three, stator teeth, which are spaced apart from one another in the direction of movement of the rotor, wherein a first stator tooth of the stator teeth is arranged between two second stator teeth of the stator teeth, wherein the two second stator teeth each comprise a stator recess, in which a fastening element is arranged, in particular a shaft, a rolling bearing or a sliding bearing, each of which is fastened to the fastening element. In such a linear motor, the rotor can be switched between two final positions in order to move the locking mechanism between a locking position and a release position. The rotor can be locked into the two final positions and also hold the locking position against a defined external force until the rotor is switched and transformed into another final position by energizing the stator coil. In this respect, such a linear motor has a bistable operation, wherein the final positions of the rotor correspond to the locking position and the release position of the locking mechanism.

[0011] In this case, it is preferred that a first stator tooth of the stator tooth arranged between two second stator teeth of the stator tooth has a first tooth width, which is greater than the second tooth width of the second stator tooth. The tooth width is understood to be the extension of the stator tooth along the direction of movement of the rotor. The second stator teeth preferably have the same second tooth width.

[0012] According to an advantageous embodiment, the rotor has two, preferably exactly two, permanent magnets having opposite magnetization directions.

[0013] Particularly preferably, the permanent magnets have the same permanent magnet width, wherein the ratio of the permanent magnet width to the first tooth width is greater than 1, preferably greater than 1.1, particularly preferably greater than 1.2, for example 1.4. The permanent magnet width is understood to be the extension of the permanent magnet in the direction of movement of the rotor.

[0014] Advantageously, the stator core is designed as a laminated core. The laminated core can have a plurality of individual laminates, which are arranged in layers to form the laminated core. The individual laminates are preferably not insulated from one another. Preferably, the individual laminates each comprise a through hole, which forms one or more stator recesses in a layered arrangement. Alternatively, it can be provided that the stator core is designed as a milled part or a casting. Alternatively, it can be provided that the stator core is not designed as a separate component, but as a housing lower part.

[0015] According to an advantageous embodiment, the housing of the linear motor has a first stop for the rotor in the first end position and a second stop for the rotor in the second end position.

[0016] A preferred embodiment provides that the rotor has at least one attachment area for an operating mode spring element, via which the rotor can be preloaded into an end position. Via such an operating mode spring element, the rotor can enable operation of the linear motor in a preferred direction as an alternative to bistable operation. It is particularly advantageous if the rotor comprises two attachment areas, for example on opposite sides of the rotor, so that the operating mode spring element can be arranged alternatively on a first side of the rotor or on a second opposite side of the rotor.

[0017] Another subject of the invention is a locking device for a sliding door installation, comprising the above-mentioned linear motor and a locking mechanism which can be moved back and forth between a release position and a locking position.

[0018] The same advantages as already described in connection with the linear motor can be achieved in the locking device.

[0019] According to an advantageous embodiment of the locking device, the linear motor has an operating mode spring element.

[0020] - prestressing the rotor into a failsafe final position via the operating mode spring element, wherein the rotor is coupled to the locking mechanism so that the locking mechanism is arranged in a release position in the failsafe final position of the rotor; or

[0021] The rotor is preloaded into a failsecure end position via the operating mode spring element, wherein the rotor is coupled to the locking mechanism in such a way that the locking mechanism is arranged in a locked position in the failsecure end position of the rotor.

[0022] This alternative embodiment of the locking device can respectively enable an operation in which the rotor of the linear motor in the de-energized state is brought into a defined end position, so that the locking mechanism is in its release position or in its locking position.

[0023] The present invention also relates to a sliding door device, which includes: a door drive, which has a traction mechanism, especially a drive belt, rope or chain; a sliding door travel mechanism, which has a movable slide for a sliding door element, which is coupled to the traction mechanism and can be shifted from a closed position to at least one predetermined open position via a certain section; and a locking device as described above for locking the door drive.

[0024] In the case of a sliding door installation, the same advantages as those already described in connection with the linear motor can be achieved.

[0025] According to an advantageous configuration of the sliding door device, the locking section of the locking mechanism cooperates with the traction mechanism in a force-fitting and / or form-fitting manner in the locked position, so that the carriage coupled to the traction mechanism is locked. In such a sliding door device, the door drive can be locked by the direct cooperation of the locking mechanism, in particular the locking section of the locking mechanism, with the traction mechanism.

[0026] In the release position, the locking mechanism preferably releases the traction mechanism so that the traction mechanism can be moved. In this regard, in the release position, there is preferably no force fit and / or form fit between the locking mechanism and the traction mechanism. The traction mechanism is preferably a continuous traction mechanism. The traction mechanism can be a drive belt, for example a flat drive belt, a toothed belt or a wedge-shaped drive belt. Alternatively, the traction mechanism can be designed as a chain or a rope.

[0027] The locking device can be arranged, for example, in the area of ​​a traction mechanism drive of a door drive for driving the traction mechanism. Preferably, a control device of the door drive is also arranged in the area of ​​the traction mechanism drive, so that a short wiring between the control device and the locking device or the traction mechanism drive can be achieved.

[0028] Another subject of the present invention is a method for producing a linear motor for moving a locking mechanism between a release position and a locking position, wherein a housing is provided and wherein a stator and a rotor which can be moved translationally relative to the stator are arranged in the housing, wherein the rotor is movably supported by means of a plurality of, in particular four, rolling bearings or sliding bearings which are arranged on the stator and / or the housing.

[0029] In this method, the same advantages as already described in conjunction with the linear motor can be achieved.

[0030] An advantageous embodiment of the method provides that a plurality of individual laminations are inserted onto at least one common fastening element in order to form a stator core of the stator. The fastening element can be designed, for example, as a shaft. Preferably, the individual laminations are inserted onto a plurality of, in particular exactly two, fastening elements. The individual laminations can form a laminated stator core which provides a fastening region for a rolling bearing or a sliding bearing.

[0031] Preferably, a rolling bearing or a sliding bearing is applied to the free end of at least one fastening element or a plurality of fastening elements. Thus, on the one hand, the rolling bearing or the sliding bearing can be connected to the stator, in particular to the stator core. In addition, however, the single lamination stack can also be fixed in its position along the fastening element by means of the rolling bearing or the sliding bearing arranged at the free end.

[0032] The stator is preferably inserted together with the fastening element and the rolling bearing or sliding bearing arranged on the fastening element into one or more housing recesses in the housing, in particular in one or more housing recesses in the first housing part. The housing is then preferably closed, for example by fastening the second housing part to the first housing part, wherein the fastening element is fixed, for example clamped, between the two housing parts. Tool-free installation of the stator in the housing is thus possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Further advantages and details of the invention will be explained below based on the exemplary embodiments shown in the drawings. Here, it is shown:

[0034] Figure 1 A sliding door device shown in schematic form;

[0035] Figure 2a The locking device is shown in a perspective view;

[0036] Figure 2b The three-dimensional cross-sectional diagram shows Figure 2a Locking device;

[0037] Figure 2c The cross-sectional diagram shows Figure 2a Locking device;

[0038] Figure 3a A three-dimensional diagram showing Figure 2a a locking drive of a locking device;

[0039] Figure 3b A perspective view showing the base without a housing Figure 3a Locking drive of

[0040] Figure 3c The three-dimensional cross-sectional diagram shows Figure 3a Locking drive of

[0041] Figure 3d The cross-sectional diagram shows Figure 3a Locking drive of

[0042] Figure 3e A side view showing Figure 3a Locking drive of

[0043] Figure 4a A three-dimensional diagram showing Figure 3a A stator of a locking drive;

[0044] Figure 4b The three-dimensional cross-sectional diagram shows Figure 4a stator;

[0045] Figure 4c A first side view is shown according to Figure 4a stator;

[0046] Figure 4d A second side view is shown according to Figure 4a stator;

[0047] Figure 5a A three-dimensional diagram showing Figure 3a The rotor of the locking drive;

[0048] Figure 5b The three-dimensional cross-sectional diagram shows Figure 5a The rotor;

[0049] Figure 5c Relative to Figure 5a The rotating stereogram shows the Figure 5a The rotor;

[0050] Figure 6a The cross-sectional diagram shows Figure 3a A locking drive, wherein a first operating mode spring is used;

[0051] Figure 6b The cross-sectional diagram shows Figure 3a A locking drive wherein a second operating mode spring is used;

[0052] Figure 7a A three-dimensional diagram showing Figure 2a a locking device for removing the locking mechanism;

[0053] Figure 7b The three-dimensional cross-sectional diagram shows Figure 7a Locking device;

[0054] Figure 8a The top view shows Figure 2a a locking device for removing the upper housing part, wherein the locking mechanism is in a released position;

[0055] Figure 8b Show according to Figure 8a A locking device wherein the locking mechanism is in a locked position;

[0056] Figure 9a A partial cross-sectional view shows the Figure 8b Locking device;

[0057] Figure 9b A partial cross-sectional view shows the Figure 9a A locking device, wherein the locking section is positioned relative to Figure 9a The diagram in the diagram changes;

[0058] Figures 10a to 10f Different views showing a locking device according to an alternative embodiment;

[0059] Figures 11a to 11c Different views showing a locking device according to another alternative embodiment;

[0060] Fig.12a A schematic diagram showing a traction mechanism and a locking mechanism in a released position;

[0061] Figure 12b A schematic diagram showing a traction mechanism and a locking mechanism in an intermediate position between a release position and a locking position, in which intermediate position a positive fit is not possible;

[0062] Fig.12c A schematic diagram showing a traction mechanism and a locking mechanism in a locked position;

[0063] Fig.13 A position sensor is shown in perspective view;

[0064] Fig.14 A flow chart showing a first exemplary embodiment of a method for operating a shutdown device;

[0065] Fig.15 A flow chart showing a second exemplary embodiment of a method for operating a shutdown device;

[0066] Fig.16 a flow chart showing a third exemplary embodiment of a method for operating a shutdown device; and

[0067] Fig.17 Another embodiment of a guide slideway of a slideway mechanism is shown. DETAILED DESCRIPTION

[0068] exist Figure 1 In FIG. 1 , a sliding door device 1 is shown in a schematic diagram. The sliding door device 1 comprises a sliding door element 6 and a door drive 9 via which the sliding door element 6 can be moved electrically, for example Figure 1 , in which the sliding door element 6 is arranged in the door opening, and in which the sliding door element 6 is at least partially arranged behind the wall element 7 and thereby releases the door opening. According to the embodiment described, the door drive 9 is arranged above the sliding door element 6 of the sliding door device 1. However, it is also conceivable that the door drive 9 is alternatively arranged below the sliding door element 6, for example between the sliding door element 6 and the ground 8 or below the sliding door element 6 in the ground 8.

[0069] The door drive 9 of the sliding door device 1 includes an electric motor 2 and a traction mechanism 3. The traction mechanism 3 is coupled to the electric motor 2, in particular to a machine shaft or a pinion of the electric motor 2, so that the traction mechanism 3 can be driven by the electric motor 2. The traction mechanism 3 is configured as a continuous traction mechanism 3. According to the embodiment, the traction mechanism 3 is a drive belt configured as a toothed belt. Alternatively, the traction mechanism 3 can be configured as a rope or a chain or a flat drive belt or a wedge-shaped drive belt. The traction mechanism 3 is guided around a deflection element 4, such as a guide roller, a guide wheel or a guide pinion. The deflection element 4 is arranged on the side of the door drive 9 opposite to the electric motor 2.

[0070] Another element of the sliding door device is a sliding door travel mechanism with a movable carriage 5 for the sliding door element 6. The movable carriage 5 is coupled to the traction mechanism 3 of the door drive 9 so that the carriage 5 together with the sliding door element 6 moves from the Figure 1 From the closed position shown in FIG. , it is movable via a certain path into at least one predetermined open position.

[0071] In accordance with Figure 1In the sliding door device of , a locking device 10 for locking the door drive 9 is also provided. The locking device 10 has a locking mechanism that can be moved back and forth between a release position and a locking position. In the release position, the traction mechanism 3 is released and can be driven by the electric motor 2. In the locked position, the locking section of the locking mechanism cooperates with the traction mechanism 3 in a force-fitting and / or form-fitting manner, so that the carriage 5 coupled to the traction mechanism 3 and thus the sliding door element 6 are also locked. The locking device 10 does not need to be arranged in the area of ​​the electric motor 2 or in the area of ​​the deflection element 4, so that the locking device can be arranged at a freely selectable position along the traction mechanism 3, for example, in - as in Figure 1 - next to the electric motor 2.

[0072] Figure 2a , Figure 2b and Figure 2c The diagram in FIG. 1 shows a locking device 10, which can be used according to Figure 1 The locking device 10 comprises a housing 11 having two traction mechanism recesses 12.1, 12.2, in which a traction mechanism 3 designed as a toothed belt can be arranged. At the inner contour of the first traction mechanism recess 12.1, a locking section 14 of a movable locking mechanism 13 protrudes from the housing 11. Figure 2a In the locking position shown in FIG. 1 , the locking section 14 cooperates with the traction means 3 in a force-fitting and form-fitting manner. Here, the inner contour of the first traction means recess 12 . 1 opposite the locking section 14 forms a stop 16 for the traction means 3. In the locking position of the locking means 13 , the locking means presses the traction means 3 against the stop 16 so that the traction means 3 comes into contact with the stop 16.

[0073] The locking section 14 has a plurality of teeth, the outer contour of which matches the outer contour of the teeth of the toothed belt. In the locking position, the teeth of the locking section 14 are in engagement with the teeth of the traction mechanism 3.

[0074] from Figure 2a to Figure 2c It can also be seen from the illustration in that the housing 11 has a multi-piece structure. The multi-piece housing 11 comprises a first housing part 11.1, which forms a first housing cavity 11.4, in which a locking drive 20 is arranged. The second housing part 11.2 has a housing wall 17, which separates the first housing cavity 11.4 from the second housing cavity 11.5. In the second housing cavity 11.5 surrounded by the second housing part 11.2 and the third housing part 11.3, a locking mechanism 30 is arranged, which also includes a locking mechanism 13.

[0075] Figures 3a to 3eThe illustration in FIG. 4 shows details of the locking drive of the locking device 10. The locking drive is designed as a linear motor 20. The housing 11, in particular the first and second housing parts 11.1, 11.2 of the locking device 10, form the housing of the linear motor 20. The linear motor 20 also has a stator 21 arranged in the housing 11 and a rotor 24 that can be moved translationally relative to the stator 21, which will be explained below with reference to the illustrations in FIG. 4 and FIG. 5.

[0076] If you can Figures 3a to 3e As can be seen from the illustration in FIG. 2 , the rotor 24 is movably supported by means of a plurality of, here precisely four, rolling bearings 26 arranged on the stator 21 and / or on the housing 11. Via the rolling bearings 26, the rotor 24 is movable in a direction parallel to the displacement direction B of the traction mechanism 3, see FIG. Figure 2a The rolling bearings 26 each have an inner bearing ring 26.1 and an outer bearing ring 26.2 which is rotatable relative to the inner bearing ring 26.1 and which bears against the rolling surface 24.1 of the rotor 24. The inner bearing ring 26.1 of the rolling bearing 26 is always fastened to a fastening element 27 which is designed as a shaft. In this respect, the two rolling bearings 26 are each fastened to a common fastening element 27. The fastening element 27 is arranged in the stator recess 21.1 in the stator 21 and in the housing recess 11.6 in the housing 11.

[0077] according to Figures 4a to 4d , the details of the stator 21 of the linear motor 20 will be explained below. The stator 21 includes a stator core 22 which is designed as a laminated core. The laminated core is formed by a plurality of single laminations, which have the same cross section, here an E-shaped cross section. The single laminations are preferably made of a soft magnetic material, for example iron or steel. Preferably, the single laminations are not insulated relative to each other. The stator core 22 generally forms exactly three stator teeth 22.1, 22.2, which are arranged spaced apart from each other in the movement direction B of the rotor 24, that is, also in the movement direction B of the traction mechanism 3. The first stator tooth 22.1 is arranged between the two second stator teeth 22.2. Between the first stator tooth 22.1 and the two second stator teeth 22.2, a coil receiving portion is formed, in which the coil 22 of the stator 21 is received. The first stator tooth 22.1 has a first tooth width Z1, which is greater than the second tooth width Z2 of the second stator tooth 22.2. The two second stator teeth 22.2 each comprise a stator recess 21.1 in which one of the fastening elements 27 designed as a shaft is arranged. The recesses 21.1 are each designed as a circular recess in the laminated core 22 or in a single laminate of the stator core 22. In addition, a chamfer is provided at the free end of each second stator tooth 22.2, which is provided at the edge of the respective second stator tooth 22.2 facing the first stator tooth 22.1.

[0078] To produce the stator, the individual laminations of the stator core 22 can be plugged onto the fastening element 27. In a further step of the production method, the rolling bearing 26 can be applied to the free end of the fastening element 27. The assembly consisting of the stator core 22, the fastening element 27 and the rolling bearing 26 can be placed in the housing 11, in particular in the stator receptacle of the housing 11. Preferably, the coil 23 is connected to the stator core 22 before being placed in the housing. Alternatively, the coil 23 can be connected to the stator core 22 after the stator core 22 has been placed in the housing 11.

[0079] exist Figure 5a to Figure 5c , a rotor 24 of a linear motor 20 is shown. The rotor 24 is plate-shaped and has an underside which, in the assembled state of the linear motor 20, faces the stator 22. The rotor 24 is preferably made of a soft magnetic material, for example iron or steel.

[0080] On the underside, one or more rolling surfaces 24.1 are provided for rolling bearings 26, see Figure 5c . A plurality of, here precisely two, permanent magnets 28 are also provided on the lower side of the rotor. The permanent magnets 28 are arranged spaced apart from each other in the movement direction B of the rotor 24 or the traction mechanism 3 and have opposite magnetization directions. The magnetization directions of the two permanent magnets 28 are oriented perpendicularly to the surface of the lower side, i.e. perpendicularly to the rolling surface 24.1. The two permanent magnets 28 have the same permanent magnet width PM. The permanent magnet width PM is selected so that the ratio of the permanent magnet width PM to the first tooth width Z1 is greater than 1, preferably greater than 1.1, particularly preferably greater than 1.2, for example 1.4. By supporting the rotor 24 by means of rolling bearings 26, it can be ensured that the permanent magnets 28 of the rotor 24 are separated from the stator core 22 by an air gap, see for example Figure 3d .

[0081] On the upper side of the rotor 24, opposite the lower side, two control elements 25 are provided, which are designed as shafts protruding vertically from the rotor 24, see Figure 5a and Figure 5b The locking mechanism 30 of the locking device 10 is controlled via the control element 25. A first guide rolling bearing 41 and a second guide rolling bearing 42 arranged above the first guide rolling bearing are fastened to the control element 25. In the case of the linear motor 20, the first guide rolling bearing 41 is accommodated in a guide opening 18 of the housing wall 17 which is designed as an elongated hole. The first guide rolling bearing 41, in particular a bearing ring of the first guide rolling bearing 41 which is rotatable relative to the control element 25, can roll on the inner contour of the guide opening 18, see for example Figure 2b , Figure 2cIn the assembled state of the locking device 10, the second guide rolling bearing 42 of the control element cooperates with the locking mechanism 13. For this purpose, the second guide rolling bearing 42 is accommodated in the guide slot 19 of the locking mechanism 13. Here, the bearing ring of the second guide rolling bearing 42, which is rotatable relative to the control element 25, can roll on the inner contour of the guide slot 19, see for example Figure 2b , Figure 2c .

[0082] Figure 6a and Figure 6b The figures in each case show a top view of the linear motor 20 of the locking device 10, in particular a top view of the upper side of the rotor 24 of the linear motor 20. The two figures show two end positions of the rotor 24, which correspond to the release position and the locking position of the locking mechanism 13. If the rotor 24 is in the Figure 6a In the first position shown in FIG. 1 , the locking mechanism 13 coupled to the rotor 24 is in its locking position. Figure 6b , the locking mechanism 13 is then arranged in its release position. The linear motor 20 can stably latch the locking mechanism 13 in the illustrated end position without spring force in order to switch between the release position and the locking position and also hold the end position against defined external forces. By energizing the coil, it is possible to switch between the two end positions. In this respect, the linear motor 20 can realize a bistable operation.

[0083] Compared to lifting magnets or holding magnets, the linear motor 20 enables a greater range of travel of the rotor 24 with simultaneously high forces over the range of travel. In this respect, compared to lifting magnets or holding magnets, the linear motor can perform significantly more mechanical work with the same structural volume. In addition, the linear motor 20 has a lower energy requirement, since the coils 23 of the linear motor 20 only need to be energized when switching between the two end positions of the rotor 24.

[0084] In order to enable operation of the linear motor 20 in a preferred direction as an alternative to the bistable operation, the rotor 24 has at least one attachment area 24.2, 24.3 for an operating mode spring element 43, 44, via which the rotor 24 can be prestressed into an end position. In the illustrated embodiment, two attachment areas 24.2, 24.3 for such an operating mode spring element 43, 44 are provided on the rotor.

[0085] At the first attachment area 24.2, such as Figure 6aAs shown in , a first operating mode spring element 43 can be attached to enable a power-off door-closing (Failsecure) operation. The first operating mode spring element 43 preloads the rotor 24 into the power-off door-closing final position, wherein the rotor 24 is coupled to the locking mechanism 13, so that in the power-off door-closing final position of the rotor 24, the locking mechanism 13 is arranged in its locking position. In order to alternatively achieve a power-off door-opening (Failsafe) operation, a second operating mode spring element 44 is attached to the second attachment area 24.3. The second operating mode spring element 44 preloads the rotor 24 into the power-off door-opening final position. The rotor 24 is coupled to the locking mechanism 13, so that in the power-off door-opening final position of the rotor 24, the locking mechanism 13 is arranged in its release position.

[0086] Figure 7a and Figure 7b The illustration in FIG. 1 shows a locking device 10, wherein the locking mechanism 30, in particular the locking mechanism 13, the third housing part 11.3 and the traction mechanism 13 are not shown for better visibility of the linear motor 20. It can be seen that the two control elements 25 of the rotor 24 are arranged to extend through two independent guide openings 18 in the housing wall 17. The first guide rolling bearing 41 provided at the control element 25 can roll on the inner contour of the corresponding guide opening 18. The guide opening 18 can absorb the force of the control element 25 in the event of damage, that is, when a force is applied to the locking mechanism 13 via the sliding door element 6, and introduce the force into the housing 11, in particular the second housing part 11.2. As a result, the linear motor 20, in particular the rotor 24 of the linear motor 20 connected to the control element 25, can be protected from damage.

[0087] The first housing part 11 . 1 forming the first housing interior 11 . 4 has a wall which forms a first stop for the rotor 24 of the linear motor 20 in the first end position and a second stop for the rotor 24 in the second end position.

[0088] according to Figure 8a and Figure 8b The locking mechanism 30 of the locking device 10 shown in FIGS. 2 to 7 is described in detail below. The locking mechanism 30 includes a locking mechanism 13. Figure 8a The release position shown in Figure 8bThe locking mechanism has a locking section 14 and a supporting element 15 that supports the locking section 14. In the locked position, the locking section 14 of the locking mechanism 13 cooperates with the traction mechanism 3 in a force-fitting and / or form-fitting manner, thereby locking not only the traction mechanism 3 but also the carriage 5 of the sliding door device 1 that is coupled to the traction mechanism 3. In contrast, in the released position, the locking section 14 is arranged spaced apart from the traction mechanism 3, so that the traction mechanism and thus also the carriage 5 are also released and can be moved along the movement direction B. Therefore, in the released position, there is no form-fitting and / or force-fitting between the locking mechanism 13 or the locking section 14 and the traction mechanism 3.

[0089] In the embodiment described, the locking mechanism 13 is linearly movable between a locking position and a release position. For this purpose, the locking mechanism 13 is supported in a linearly movable manner in the second housing interior 11.5. Here, a linear movement of the locking mechanism 13 is achieved in a locking direction V arranged perpendicularly to the movement direction B of the traction mechanism 3. In addition, the locking mechanism 13, in particular the support element 15, has two guide slots 19, which together with the control element 25 of the rotor 24 form a slot mechanism, via which the locking mechanism 13 is placed in a movement in the locking direction V due to the movement of the rotor 24 parallel to the movement direction B of the traction mechanism 3. The two guide slots 19 are identically constructed so that an undesired tipping of the locking element 13 can be prevented.

[0090] The guide slot 19 has a nonlinear extension, so that a movement of the rotor 24 parallel to the movement direction B of the traction mechanism 3 by a predetermined distance is not converted into a movement of the locking mechanism 13 perpendicular to the movement direction B by the distance in all regions between the end positions of the rotor 24. More precisely, the nonlinear extension of the guide slot is selected so that, starting from the release position of the locking mechanism 13, a relatively small movement of the rotor 24 is first converted into a relatively large movement of the locking mechanism 13. In this regard, a steep extension of the guide slot 19 is selected. As a result, it can be achieved that the locking mechanism 13 approaches the traction mechanism 3 smoothly during locking. As a result, a large lift transmission ratio and a small force transmission ratio are generated in the region approaching the release position. The relatively steep extension of the guide slot transitions to a gentle extension towards the locking position, so that the movement of the rotor 24 causes a small movement of the locking mechanism 13. As a result, in the region of the locking position, a large force transmission ratio and a small travel transmission ratio are generated, so that the locking section 14 of the locking mechanism 13 engages with a large force in the traction mechanism 3 and can lock the traction mechanism. Optionally, the guide link can have an extension in the region of the locking position which is oriented parallel to the displacement direction of the traction means 3 , so that an increased supporting effect is provided against forces acting from the outside on the traction means 3 or the locking means 13 .

[0091] As in Figure 9a and Figure 9b As can be seen in FIG. 1 , the locking section 14 of the locking mechanism 13 is supported movably relative to the support element 15. The locking section 14 is supported movably on the support element 15 parallel to the movement direction B of the traction mechanism 3, preferably in a guided manner. In addition, a spring element 31 is provided, which acts on the locking section 14 with a restoring force. According to the embodiment described, the spring element 31 acts on the locking section 14 with a restoring force in a direction away from the closed position of the sliding door device 1. If the locking mechanism 13 is moved toward its locking position and the teeth of the locking section 14 are completely engaged with the recesses between the teeth of the corresponding traction mechanism 3, the locking section 14 can be moved relative to the support element 15 together with the traction mechanism 3 against the preload of the spring element 31. Thus, when the carriage 5 of the sliding door device 1 is in a pre-closing position that has not yet completely reached the closed position, in particular when the sliding door device leaves a certain gap, the locking mechanism 3 can move into its locking position. From the pre-closing position, the traction mechanism 3 can be moved so that the carriage 5 of the sliding door device 1 is moved toward the closed position, that is, in order to completely close the sliding door device. In this case, the locking section 14 is moved against the restoring force of the spring element 31. Preferably, the spring element 31 or the locking section 14 and / or the support element 15 are dimensioned so that the locking section can be moved relative to the support element 15 at least by a displacement distance corresponding to the spacing (tooth pitch) of two adjacent teeth of the traction mechanism 3. When the locking mechanism 13 is moved from the locking position toward the release position, the locking section 14 can be moved again to the initial position of the locking section by the spring element 31.

[0092] Figures 10a to 10f The illustration in FIG. 1 shows a locking device 10 according to an alternative embodiment, which is also suitable for use in accordance with Figure 1 The locking device 10 according to the alternative embodiment corresponds substantially to the locking device according to the first embodiment, so reference is made to the previous description of the first embodiment. Unlike the first embodiment, in the locking device 10 according to the alternative embodiment, the locking mechanism 13 is pivotably supported about the pivot axis S for movement between the release position and the locking position. Fig.10c and Fig.10d The locking device 10 is shown with the locking mechanism 13 in the released position. Fig.10e and Fig.10f , the locking mechanism 13 is in the locked position. Furthermore, the locking mechanism 13 or the carrier element 15 of the locking mechanism 13 has only one guide slot 19. Correspondingly, only one control element 25 is provided on the rotor 24 of the linear motor 20 according to the alternative embodiment, which control element engages with the guide slot 19 in order to pivot the locking mechanism 13.

[0093] According to this alternative embodiment, the locking mechanism 13 is dimensioned and arranged such that the ratio of the distance D1 between the locking section 14 and the pivot axis S to the distance D2 between the traction mechanism 3 and the pivot axis S is at least 3:1, particularly preferably at least 4:1.

[0094] Another alternative embodiment of the locking device 10 is Figures 11a to 11c The locking device 10 according to this exemplary embodiment corresponds substantially to the locking device according to FIG. 10 , wherein, in contrast to the locking device according to FIG. 10 , two guide slots 19 and two control elements 25 are provided.

[0095] The following should be based on Figure 12 to Fig.17 The illustration in discusses the details of the operation of the above-described sliding door device 1, which has a door drive 9 with a traction mechanism 3 designed as a toothed belt, which in the locked position cooperates with the traction mechanism 3 in a form-fitting manner. In the sliding door device 1, it is necessary that the form-fitting elements of the locking mechanism 13 and the traction mechanism 3, here teeth, are oriented toward each other in order to achieve a form fit between the locking mechanism 13 and the traction mechanism.

[0096] according to Fig.12a , shows the locking mechanism 13 in a released position, in which the locking mechanism 13 is arranged spaced apart from the traction mechanism 3. The locking mechanism 13 according to the embodiment has a locking section 14 which is formed integrally with the support element 15. The spacing between adjacent teeth of the traction mechanism 3 is described below as the tooth pitch T.

[0097] Figure 12b The diagram in FIG. 1 shows the following situation: the locking mechanism 13 is Fig.12a In the release position shown in FIG. 1 , the traction mechanism 3 moves in the locking direction V, and the traction mechanism 3 is in the release position shown in FIG. Fig.12a In this position of the traction mechanism 3, the locking section 14, in particular the teeth of the locking section 14, cannot engage in the recesses between the teeth of the traction mechanism 3. In this position of the traction mechanism 3, a positive fit between the locking mechanism 13 and the traction mechanism 3 cannot be achieved.

[0098] exist Fig.12c , a locking position of the traction mechanism 3 is shown, in which the teeth of the traction mechanism 3 are oriented toward the teeth of the locking mechanism 13, so that the teeth of the locking mechanism can be moved into the recesses between the teeth of the traction mechanism 3 along the locking direction V. In this case, a form fit between the locking mechanism 13 and the traction mechanism 3 is achieved.

[0099] Fig.13The diagram in FIG. 1 shows an embodiment of a locking device 10 having a position sensor 50 for detecting the position of a locking mechanism 13. In order to detect the position of the locking mechanism 13, the position sensor 50 detects the position of the rotor 24 of the linear motor 20. In this respect, the position of the locking mechanism 13 is detected indirectly. A first detection range 53 of the position sensor 50 is provided in fixed connection with the rotor 24, which moves along a direction parallel to the movement direction of the traction mechanism 3 with the movement of the rotor 24. The position sensor 50 also includes a first detector 51 for detecting the rotor 24 in a first position or a first end position and a second detector 52 for detecting the rotor 24 in a second position or a second end position. The first position of the rotor 24 corresponds to the locking position of the locking mechanism 13, and the second position of the rotor 24 corresponds to the release position of the locking mechanism 13. The detectors 51, 52 are arranged spaced apart from each other and are fixedly connected to the housing 11 of the locking device 10, so that when the rotor 24 moves between its end positions, the first detection range 53 moves between the two detectors 51, 52.

[0100] The first and second detectors 51 , 52 are preferably designed as detection contacts. Alternatively, it can be provided that the detectors 51 , 52 are designed as light barriers.

[0101] According to Fig.13 In the embodiment shown in FIG. 2 , the position sensor 50 has a second detection range 54, which is fixedly connected to the rotor 24. The second detection range 54 is arranged on the rotor 24 so that in a first position with the rotor 24 corresponding to the locking position of the locking mechanism 13, the second detection range cooperates with a switch, especially a microswitch, not shown in the drawings. The switch is preferably a switch that does not require power supply for operation, so that even when the current is interrupted, the locking position of the locking mechanism 13 can be detected by means of the second detection range 54 and the switch.

[0102] exist Fig.14 , a flow chart of a method for operating a sliding door device 1 is shown, in which a locking reference position of the traction mechanism 3 is determined and stored. In an initial step 101, the sliding door element 6 is in its closed position. In a pushing step 102, the sliding door element 6 is pushed towards its closed position, in particular with a preset pressure. Then, in a subsequent triggering step 103, a locking command for moving the locking mechanism 13 into the locked position is transmitted to the locking device 10. Next, the linear motor 20 is operated so that the rotor 24 of the linear motor 20 moves from one of its end positions into its other end position, and in the process, the locking mechanism 13 moves from the release position to its locked position.

[0103] In a detection step 104 following the triggering step 103, the position of the locking mechanism 13 is detected by means of a position sensor of the locking device 10. If it is determined that the locking mechanism is not in its position Fig.12c , then in the movement step 110 after the detection step 104, the traction mechanism 3 is moved relative to the locking mechanism 13 by a preset stroke length. In the first sub-step 107 of the movement step 110, a desired position of the traction mechanism 13 is set, which is offset from the current actual position of the traction mechanism 3 by a preset stroke length. Here, the preset stroke length is selected to be smaller than the tooth pitch T. In the second sub-step 108, the traction mechanism 3 is moved to the desired position. In the third sub-step 109, it is checked by means of a stroke sensor of the electric motor 2 of the door drive 9 whether the desired position has been reached. If the desired position has not been reached, the traction mechanism 3 is moved toward the desired position until it is reached.

[0104] After the movement step 110, the triggering step 103 and the detection step 104 are repeated until the locking mechanism 13 is detected in the detection step 104 in the locked position. Then, in the storage step 105, the position of the traction mechanism 3 is stored as a locking reference position. The locking reference position can be taken into account later to calculate a further locking position of the traction mechanism 3. In the final state 106, the door drive 9 of the closing device 1 is locked.

[0105] Fig.15 The diagram in FIG. 2 shows a flow chart of a method for operating a sliding door device 1, in which a door drive 9 is locked in another locking position of the traction mechanism 3. The other locking position is different from the locking reference position of the traction mechanism 3. In an initial step 201, the door drive receives a movement command for moving the sliding door element 6 or the traction mechanism 3 to a preset target position. In a calculation step 202, another locking position that is as close as possible to the preset target position is calculated based on the stored locking reference position. Then, in a further movement step 203, the traction mechanism 3 is moved towards the other locking position. Here, in a first sub-step 204, the traction mechanism 3 is moved towards the locking position. In a second sub-step 205, it is checked by means of a travel sensor of the electric motor 2 whether a preset interval relative to the locking position is exceeded. If the preset interval relative to the locking position is not exceeded, the traction mechanism 3 is moved towards the locking position until the preset interval relative to the locking position is exceeded.

[0106] After the movement step 203, in a triggering step 206, a locking instruction for moving the locking mechanism 13 into the locked position is transmitted to the locking device 10 while the traction mechanism 3 is in motion. In a detection step 207 after the triggering step 206, the position of the locking mechanism 13 is detected by means of the position sensor 50 of the locking device 10. If it is determined that the locking mechanism is not in its locked position, Fig.12c , the traction mechanism 3 is moved by a preset stroke length relative to the locking mechanism 13 in a movement step 213 after the detection step 207. In a first sub-step 209 of the movement step 213, a desired position of the traction mechanism 13 is set, which is offset from the current actual position of the traction mechanism 3 by a preset stroke length. Here, the preset stroke length is selected to be smaller than the tooth pitch T. In a second sub-step 210, the traction mechanism 3 is moved to the desired position. In a third sub-step 211, it is checked by means of a stroke sensor of the electric motor 2 of the door drive 9 whether the desired position has been reached. If the desired position has not been reached, the traction mechanism 3 is moved toward the desired position until it is reached.

[0107] After the movement step 213 , the triggering step 206 and the detection step 207 are repeated until it is detected in the detection step 207 that the locking mechanism 13 is in the locked position (final state 208 ).

[0108] Fig.16 The diagram in shows a flow chart of an alternative method for operating a sliding door device 1, in which the door drive 9 is locked in another locking position of the traction mechanism 3. In an initial step 301, the door drive receives a movement instruction for moving the sliding door element 6 or the traction mechanism 3 to a preset target position. Then, in a calculation step 302, another locking position that is as close as possible to the preset target position is calculated based on the stored locking reference position. Then, in another movement step 303, the traction mechanism 3 moves toward the other locking position. Here, in a first sub-step 304, the traction mechanism 3 moves toward the locking position. In a second sub-step 305, it is checked with the help of a travel sensor of the electric motor 2 whether the locking position has been reached. If the locking position has not been reached, the traction mechanism 3 continues to move toward the locking position until it is reached.

[0109] After the moving step 303, in a triggering step 306, a locking instruction for moving the locking mechanism 13 into the locked position is transmitted to the locking device 10. In a detecting step 207 after the triggering step 306, the position of the locking mechanism 13 is detected by means of the position sensor 50 of the locking device 10. If it is determined that the locking mechanism is not in its locked position, Fig.12c, then in the movement step 313 after the detection step 307, the traction mechanism 3 is moved by a preset stroke length relative to the locking mechanism 13. In the first sub-step 309 of the movement step 313, a desired position of the traction mechanism 13 is set, which is offset from the current actual position of the traction mechanism 3 by a preset stroke length. Here, the preset stroke length is selected to be smaller than the tooth pitch T. In the second sub-step 310, the traction mechanism 3 is moved to the desired position. In the third sub-step 311, it is checked by means of a stroke sensor of the electric motor 2 of the door drive 9 whether the desired position has been reached. If the desired position has not been reached, the traction mechanism 3 is moved toward the desired position until it is reached.

[0110] After the movement step 313 , the triggering step 306 and the detection step 307 are repeated until it is detected in the detection step 307 that the locking mechanism 13 is in the locked position (final state 308 ).

[0111] exist Fig.17 , another embodiment of a guide slot 19 of a slot mechanism is shown, which can be used in the present invention. The guide slot 19 can be arranged in the locking mechanism 13. The guide slot 19 is configured as an elongated hole with a curved extension. The radius of the curved portion of the extension is described with the reference numeral F. Fig.17 The illustration in shows the control element 25' on the left in the position in which it is located when the locking mechanism 13 is in its released position. Furthermore, on the right, the control element 25" is shown in the position in which it is located when the locking mechanism 13 is in its locked position. The lifting distance is described with the reference symbol E, the displacement distance parallel to the movement direction B of the traction mechanism 3 is described with the reference symbol G. D is the lifting angle. In order to make it difficult for the locking mechanism 13 to undesirably slip out of its locked position when forces are applied, for example due to destruction, the guide slot 19 has an angle C, in particular in its area facing the locking section 14. By means of the angle C, a surface is formed which is inclined relative to the movement direction B of the traction mechanism 3 and relative to the locking direction V, and which, in the locked position, acts together with the control element 25". Fig.17 As can be seen in FIG. 1 , due to the angle C, a force acts in a direction H which forms an acute angle with the locking direction V. As a result, it becomes difficult to press the locking mechanism 13 out of the locking position.

[0112] Reference numerals list

[0113] 1 Sliding door equipment

[0114] 2 Electric motor

[0115] 3 Traction mechanism

[0116] 4 Deflection element

[0117] 5 Slide

[0118] 6 Sliding door elements

[0119] 7 Wall elements

[0120] 8 Ground

[0121] 9 Door Driver

[0122] 10 Locking device

[0123] 11 Shell

[0124] 11.1 Housing components

[0125] 11.2 Housing components

[0126] 11.3 Housing components

[0127] 11.4 Shell cavity

[0128] 11.5 Shell cavity

[0129] 11.6 Housing recess

[0130] 12.1 Traction mechanism recess

[0131] 12.2 Traction mechanism recess

[0132] 13 Locking mechanism

[0133] 14 Locking section

[0134] 15 Load-bearing elements

[0135] 16 stopper

[0136] 17 Shell wall

[0137] 18 guide openings

[0138] 19 Guide chute

[0139] 20 Locking actuator, linear motor

[0140] 21 stator

[0141] 21.1 Stator recess

[0142] 22 stator core

[0143] 22.1 Stator teeth

[0144] 22.2 Stator teeth

[0145] 23 coils

[0146] 24 rotors

[0147] 24.1 Rolling surface

[0148] 24.2 Attachment Area

[0149] 24.3 Attachment Area

[0150] 25 control elements

[0151] 25' control element

[0152] 25" control element

[0153] 26 Rolling bearings

[0154] 26.1 Bearing ring

[0155] 26.2 Bearing ring

[0156] 27 Fastening elements

[0157] 28 permanent magnets

[0158] 30 Locking mechanism

[0159] 31 Spring element

[0160] 41 Guide rolling bearing

[0161] 42 Guide rolling bearing

[0162] 43 Operation mode spring element

[0163] 44 Operation mode Spring element

[0164] 50 Position Sensor

[0165] 51 detectors

[0166] 52 detectors

[0167] 53 Detection range

[0168] 54 Detection range

[0169] 101 First Steps

[0170] 102 Push Steps

[0171] 103 Trigger Steps

[0172] 104 Detection Steps

[0173] 105 Storage Steps

[0174] 106 Final State

[0175] 107 Substeps

[0176] 108 Substeps

[0177] 109 Substeps

[0178] 110 Moving Steps

[0179] 201 Initial Steps

[0180] 202 Calculation steps

[0181] 203 Move Steps

[0182] 204 Substeps

[0183] 205 Substeps

[0184] 206 Trigger Steps

[0185] 207 Detection Steps

[0186] 208 Final State

[0187] 209 Substeps

[0188] 210 Substeps

[0189] 211 Substeps

[0190] 213 Move Steps

[0191] 301 Initial Steps

[0192] 302 Calculation steps

[0193] 303 Move Steps

[0194] 304 Substeps

[0195] 305 Substeps

[0196] 306 Triggering Steps

[0197] 307 Detection Steps

[0198] 308 Final State

[0199] 309 Substeps

[0200] 310 Substeps

[0201] 311 Substeps

[0202] 313 Move Steps

[0203] B Moving direction

[0204] C Angle

[0205] D Lifting Angle

[0206] D1 interval

[0207] D2 interval

[0208] E Lift Distance

[0209] F Radius

[0210] G Distance

[0211] H force

[0212] PM permanent magnet width

[0213] T Pitch

[0214] Z1 tooth width

[0215] Z2 tooth width

[0216] V lock direction

Claims

1. A locking device (10) for a sliding door device (1), comprising a linear motor (20) and a locking mechanism (13), wherein the locking mechanism is capable of moving back and forth between a release position and a locking position, wherein the linear motor is configured to move the locking mechanism (13) between the release position and the locking position, wherein the locking mechanism (13) is configured to interact with a traction mechanism (3) of the sliding door device (1) to release and lock the traction mechanism (3), wherein the linear motor comprises a housing (11), a stator (21) arranged in the housing (11), and a rotor (24) capable of translational movement relative to the stator (21), wherein the rotor (24) is movably supported by means of a plurality of rolling bearings (26) or sliding bearings arranged on the stator (21) and / or on the housing (11).

2. The locking device (10) according to claim 1, It is characterized in that The rotor (24) is movably supported by means of four rolling bearings (26) or sliding bearings which are arranged on the stator (21) and / or on the housing (11).

3. The locking device (10) according to claim 1, It is characterized in that The rolling bearing (26) or sliding bearing each has a bearing ring (26.1) against which a running surface (24.1) of the rotor (24) rests.

4. The locking device (10) according to any one of claims 1 to 3, It is characterized in that In each case two of the rolling bearings (26) or sliding bearings are fastened to a common fastening element (27).

5. The locking device (10) according to claim 4, It is characterized in that The fastening element (27) is a shaft which is arranged in a stator recess (21.1) in the stator (21) and / or in a housing recess (11.6) in the housing (11).

6. The locking device (10) according to any one of claims 1 to 3, It is characterized in that The stator (21) has a stator core (22), which has three stator teeth (22.1, 22.2), which are spaced apart from each other in the movement direction (B) of the rotor (24), wherein a first stator tooth (22.1) of the stator teeth (22.1, 22.2) is arranged between two second stator teeth (22.2) of the stator teeth (22.1, 22.2), wherein the two second stator teeth (22.2) each include a stator recess (21.1), in which a fastening element (27) is arranged, to which two of the rolling bearings (26) or sliding bearings are fastened.

7. The locking device (10) according to claim 6, It is characterized in that A first stator tooth (22.1) of the stator teeth (22.1, 22.2) disposed between two second stator teeth (22.2) of the stator teeth (22.1, 22.2) has a first tooth width (Z1), which is greater than a second tooth width (Z2) of the second stator tooth (22.2).

8. The locking device (10) according to claim 7, It is characterized in that The rotor (24) has two permanent magnets (28) with opposite magnetization directions, wherein the permanent magnets (28) have the same permanent magnet width (PM), wherein the ratio of the permanent magnet width (PM) to the first tooth width (Z1) is greater than 1.

9. The locking device (10) according to claim 8, It is characterized in that A ratio of the permanent magnet width (PM) to the first tooth width (Z1) is greater than 1.

1.

10. The locking device (10) according to claim 9, It is characterized in that A ratio of the permanent magnet width (PM) to the first tooth width (Z1) is greater than 1.

2.

11. The locking device (10) according to claim 10, It is characterized in that The ratio of the permanent magnet width (PM) to the first tooth width (Z1) is 1.

4.

12. The locking device (10) according to claim 6, It is characterized in that The stator core (22) is designed as a laminated core.

13. The locking device (10) according to any one of claims 1 to 3, It is characterized in that The housing (11) has a first stop for the rotor (24) in a first end position.

14. The locking device (10) according to claim 13, It is characterized in that The housing (11) has a second stop for the rotor (24) in a second end position.

15. The locking device (10) according to any one of claims 1 to 3, It is characterized in that The rotor (24) has at least one attachment region (24.2, 24.3) for an operating mode spring element (43, 44), via which the rotor (24) can be preloaded into an end position.

16. The locking device (10) according to any one of claims 1 to 3, It is characterized in that The linear motor (20) has operating mode spring elements (43, 44), - prestressing the rotor (24) into a power-off door-opening final position via the operating mode spring element, wherein the rotor (24) is coupled to the locking mechanism (13) such that the locking mechanism (13) is arranged in a release position in the power-off door-opening final position of the rotor (24); or - The rotor (24) is preloaded into a power-off, door-closing final position via the operating mode spring element, wherein the rotor (24) is coupled to the locking mechanism (13) such that the locking mechanism (13) is arranged in a locked position in the power-off, door-closing final position of the rotor (24).

17. A sliding door device, the sliding door device include: A door drive (9) having a traction mechanism (3); a sliding door travel mechanism having a movable carriage (5) for a sliding door element (6), the carriage being coupled to the traction mechanism (3) and being displaceable from a closed position to at least one predetermined open position via a certain path; and a locking device (10) according to any one of claims 1 to 16 for locking the door drive (9).

18. The sliding door apparatus according to claim 17, wherein the traction mechanism (3) is a belt, a rope or a chain.

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