EP3339547B1 - Vehicle door drive device - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION

The invention relates to a vehicle door drive device used in a vehicle such as a bus or a rail vehicle. In such a vehicle, a lateral passenger entry opening for passengers of the vehicle can be closed by a vehicle door which, on the one hand, pivots outwardly about a vertical axis of the vehicle from a closed position and, on the other hand, has to be guided past the outer skin of the vehicle into the open position with a sliding movement, wherein an overlay the pivoting movement and the sliding movement of the vehicle door can take place. Such a vehicle door, for which the vehicle door drive device is preferably determined, may also be referred to as a swing sliding door. It is also possible that the vehicle door drive device is used for pivoting a vehicle door, which is not additionally displaced by a further drive device.

STATE OF THE ART

DE 28 05 639 B1 discloses a door leaf which is attached to pivot arms on a pivot column. By operating a screw gear by a pneumatic piston-cylinder unit, a pivoting of the rotary column, the pivot arms and the door leaf can be brought about. When the door is closed, the screw gear is blocked. A further pneumatic loading of the piston-cylinder unit in the locked state of the screw gear leads to a lifting of the rotary column, whereby a lock between the door leaf and a door frame of the passenger access opening comes into effect.

The pamphlets DE 10 2006 031 477 B4 . DE 10 2007 025 375 B4 . DE 10 2008 034 994 B3 . DE 10 2011 052 961 A1 and DE 10 2012 103 638 B4 The applicant discloses a vehicle door drive device with one of a fluidic piston-cylinder unit formed Spindle drive. Here, the rotary column forms the spindle, while a piston of the fluidic piston-cylinder unit forms the translationally guided in the direction of the vertical axis of the vehicle spindle nut. In the cited documents measures for achieving a cushioning in order to reduce the swing speed with approach to a closing angular position and / or an angular opening position of the rotary column, for locking the rotary column in a closing angular position by lifting the rotary column and for a lock proposed the rotary column by a positive or frictional locking the operating position of the piston. For the disclosed in the cited references embodiments, the piston-cylinder unit of the vehicle door drive device causes only a pivoting of the rotary column, while a further drive means for bringing about the sliding movement of the vehicle door is required.

EP 2 752 545 A2 discloses a vehicle door drive device in which a pneumatic piston-cylinder unit brings about both a rotation of the rotary column and thus a pivoting movement of the vehicle door as well as a translational movement of the vehicle door. The piston-cylinder unit is integrated here in a longitudinal guide device for the vehicle door. While with the closure of the vehicle door initially the pneumatic actuation of the piston-cylinder unit leads only to the displacement of the vehicle door, comes closer to the closed position, a driver, which couples the piston-cylinder unit with two toggle levers to operate them. The knee joint facing away from the end portion of a toggle lever is rotatably coupled to a rotary column, while the knee joint remote from the end portion of the other toggle lever is rotatably coupled about a vertical axis of the vehicle with a carriage. The carriage is slidably guided in the lateral direction of the vehicle. As a result of the coupling via the driver, the pneumatic actuation of the piston-cylinder unit leads in the direction of the closed position to an increase in the knee angle of the toggle lever drive. This increase in the knee angle results in both a pivoting of the rotary column and a lateral movement of the carriage.

GB 1 134 256 A discloses a hydraulic or pneumatic drive device for a door, in which oppositely acting pistons are connected to one another via a piston rod. In addition to the pressure chambers for actuating the piston, an oil-filled intermediate chamber is formed between the pistons, which is penetrated by the piston rod. The piston rod has on opposite sides via coaxial pins, which engage in fork-shaped end portions of a pivoting rocker, which is coupled to the door. By connecting the fork-shaped end portions of the rocker with the pin of the piston rod can be transmitted a fluidically induced translational movement of the two pistons with the connecting piston rod in a pivoting of the rocker.

DE 17 08 165 A1 relates to a drive device for a dome light, a window or a ventilation wing. A piston rod of a hydraulic actuating cylinder is rotatable via a fork with a slot of an angle lever and slidably coupled along the slot. The angle lever is articulated via a ball joint with a stay. The extension arm is in turn connected via a ball joint with the dome light, the ventilation wing or the window.

US 6 141 908 A discloses a vehicle door drive device with a fluidic actuator, by means of which, on the one hand, a rotational movement for opening and closing the vehicle door and, on the other hand, a translatory movement for locking and unlocking the vehicle door is to be brought about. The hydraulic actuator has a piston, which carries out a movement in a direction of adjustment depending on the fluidic action of oppositely acting on the piston pressure chambers. The piston has three circumferentially distributed grooves. At the lateral boundaries of the grooves roll from rings which are rotatably mounted with radially oriented axis of rotation on the inner surface of the cylinder of the actuator. The grooves have rectilinear and oriented in the direction of the actuator actuator sections and coiled sections, in which for the hydraulically caused movement of the piston on the one hand a translational movement coupled to the vehicle door rotary column for locking and unlocking the vehicle door and on the other hand, a rotation of the rotary column for opening and Closing the vehicle door can be brought about.

OBJECT OF THE INVENTION

• der Bauraumverhältnisse,
• der Sicherung einer Öffnungs- und/oder Schließstellung der Fahrzeugtür,
• der Kosten und des Bauaufwands,
• der Gestaltung der Kraft- und Bewegungsverhältnisse über den Öffnungs- und Schließhub und/oder
• der Anforderungen an eine Aufhängung der Fahrzeugtür-Antriebseinrichtung

verbessert ist.The present invention has for its object to propose a vehicle door drive device for a vehicle such as a bus or a rail vehicle, which in particular with regard to

• the installation space conditions,
• securing an open and / or closed position of the vehicle door,
• the cost and the construction effort,
• the design of the force and movement conditions over the opening and closing stroke and / or
• the requirements for a suspension of the vehicle door drive device

is improved.

SOLUTION

The object of the invention is achieved with the features of the independent claim. Further preferred embodiments according to the invention can be found in the dependent claims.

DESCRIPTION OF THE INVENTION

The invention relates to a vehicle door drive device, which is used for pivoting a vehicle door about a vertical axis of the vehicle. In this case, the vehicle door drive device may be the only drive device for the vehicle door. But it is also possible that an additional drive device for the vehicle door is present in order to bring about a further movement of the vehicle door, in particular a sliding movement of the vehicle door. Preferably, the vehicle door is a pivoting sliding door. It is also possible that the vehicle door together with another, correspondingly actuated vehicle door forms a counter-actuated double door for a common passenger entry opening.

According to the invention, the vehicle door drive device has a rotary column, which can be coupled to the vehicle door in a manner known per se. Furthermore, a fluidic, in particular pneumatic, piston-cylinder unit is present. The piston-cylinder unit is connected to the rotary column via a rocker in drive connection such that via an actuation of the piston-cylinder unit, the rotary column between a closing angular position and an opening angular position is pivotable. It is possible that a pneumatic actuation of the piston-cylinder unit causes a closing movement (or alternatively an opening movement), while the movement in the other direction via a spring, a separate drive device o. Ä. Can be brought about. It is also possible that the piston-cylinder unit is designed as a double-acting actuator, so that the application of different piston surfaces of a piston with oppositely oriented piston surfaces or two pistons can lead to a movement on the one hand in the opening direction and on the other hand in the closing direction.

According to the invention, a special coupling of the rocker is used on the one hand and the piston-cylinder unit: According to the invention, the rocker and the piston-cylinder unit are coupled directly to each other via a sliding block movable in a sliding gate. Such a coupling is a very simple, but still operational and permanent coupling. Preferably can be made possible by the inventive coupling via a slide guided in a sliding block, that a coupling of the rocker is done with the piston-cylinder unit without any pivot. On the design of the sliding and friction conditions between the Gleitkulisse and the sliding block can also be influenced on the power ratios of the vehicle door drive device. Furthermore, it is possible that, depending on the orientation of the sliding link to the direction of movement of the rocker and / or the piston-cylinder unit influencing the drive kinematics takes place, with a non-linear drive kinematics can be brought in a simple manner. Thus, for example, for a middle Stellhub between the closing angular position and the opening angular position by means of the coupling on the Gleitkulisse the same partial stroke of the piston of the piston-cylinder unit to a greater rotation of the rotary column (and thus a greater pivoting of the vehicle door) as for a control stroke which is adjacent to the opening and / or closing angular position of the rotary column. Thus, a kind of "end position damping" or reduction of the operating speed can be brought about in the region of the end positions in a simple manner. It is possible that this is done solely by specifying the orientation of a linear sliding gate. However, it is also possible for the sliding link to be curved, at least in one section, depending on the desired drive kinematics.

According to the invention is used (in surprising manner for the expert) in the sliding gate not supposedly better solution a role that can roll on the Gleitkulisse with a reduced friction, but rather a sliding block whose sliding contact with the slide gate under certain circumstances an adhesive sliding Transition with an increased static friction coefficient and / or a sliding friction brings with it. The invention deliberately uses the higher friction for sliding in the sliding link against a roller in a sliding link For example, in the area of the opening and / or closing angular position, a higher resistance to an undesired movement of the vehicle door (in particular not intentionally or unintentionally brought about by the vehicle door drive mechanism but by a passenger) can be provided.

According to the invention, the sliding block is coupled to the rocker. Here, the coupling of the sliding block on the rocker via any drive mechanism, in particular a coupling rod, a joint drive o. Ä. Made. Preferably, however, the sliding block is mounted directly rotatable about a vertical axis of the vehicle on the rocker.

The Gleitkulisse, in which the sliding block is arranged, is moved with the piston of the piston-cylinder unit. Here, the Gleitkulisse is provided in the piston itself or rigidly coupled thereto.

A particularly compact vehicle door drive device results because, according to the invention, the piston forms a slot-like receiving space, for example. In this receiving space, the rocker for actuation of the piston-cylinder unit, so at least enter in a control stroke of the piston-cylinder unit. Here, the extent to which the rocker extends in the receiving space may be dependent on the adjusting stroke of the piston-cylinder unit. The slide gate can be formed alongside or on one side of the receiving space and / or immediately adjacent thereto and / or in this transient.

If the sliding block is to be rotatably mounted on the rocker, there are many possibilities for such a rotatable mounting. For a proposal of the invention extends through the rocker a bearing shaft or a bearing pin. In this case, the sliding block may be supported on one side of the rocker by the bearing shaft or the bearing bolt. Here, the rotational degree of freedom of the sliding block relative to the rocker be ensured by the fact that the sliding block is rotatably mounted on the bearing pin or the bearing shaft is rotatably mounted on the rocker. For any such rotatable mounting any bearings (especially plain bearings or bearings) can be used.

Quite possible within the scope of the invention is that the coupling of the rocker and the piston-cylinder unit takes place exclusively via a single sliding block with a single associated sliding gate. By specifying the size of the contact surface of the sliding block with The sliding gate also a guarantee of permanent transmission of the required contact forces are guaranteed. For a further proposal of the invention find two sliding blocks with associated two sliding scenes use.

For one embodiment of the invention, the piston forms on one side of the receiving space a first sliding gate, while the piston forms a second sliding gate on the other side of the receiving space. In this case, carries the bearing shaft or the bearing pin on one side of the rocker the first sliding block, while the bearing shaft or the bearing pin on the other side of the rocker carries the second sliding block. The first sliding block is then guided in the first sliding gate and the second sliding block is guided in the second sliding gate. For this embodiment, the rocker is located between the two sliding blocks and the sliding scenes. By a distribution of the contact forces on both sides of the rocker can be brought about equalization or even a symmetrical force in the rocker on the one hand and in the piston on the other hand, whereby the stresses of the rocker and / or the piston (for example, with a running of the piston impairing moment ) can be reduced.

As mentioned above, an orientation of the slide against an axis of action of the rocker (and with respect to the direction of movement of the piston) can be arbitrarily specified structurally to bring about the desired drive kinematics. For a particular proposal of the invention forms in the opening angular position and / or the closing angular position, the axis of action of the rocker relative to the slide gate an angle which is in the range of 30 ° to 65 °, preferably 35 ° to 55 °. Such an orientation of the slide gate has the consequence that in the opening angular position and / or the closing angular position acting on the rocker pivoting force or a pivoting moment in the contact surface between the sliding block and Gleitkulisse is divided into a first force component, which in the direction of Movement of the sliding block acts in the Gleitkulisse, and a second force component, which acts vertically to the contact surface between the sliding block and the Gleitkulisse. This division into two force components can be used to secure the vehicle door in an end position: For example, for a moving vehicle, a passenger against the vehicle door or brings the passenger targeted opening forces on the vehicle door, this leads to a pivoting moment on the rocker, which should not possible to lead an undesirable opening movement of the vehicle door. However, in view of the selected angle of the sliding link relative to the axis of action of the rocker, the pivoting moment is counteracted by the frictional torque, which due to the Contact pressure of the sliding block to the limiting wall of the Gleitkulisse with the second force component arises. Even if this frictional force is overcome, the piston of the piston-cylinder unit still has to be moved with the first force component, that is, only part of the pivoting moment. Given the selected angle thus results in a poor force translation of the pivoting moment to the first force component for movement of the piston-cylinder unit. Alone in the piston-cylinder unit of the movement of the piston counteracting frictional force can already provide an additional resistance to unwanted opening of the vehicle door. It is possible that the piston-cylinder unit is pneumatically locked in said end position, so that additionally counteract pneumatic forces leaving the end position with the said power transmission ratios. But it is also possible that the change in the position of the piston of the piston-cylinder unit requires the displacement of pneumatic fluid through a conduit with a throttle effect or via a specially provided for this purpose throttle element. In this way, also a certain force can be set, which must be applied to move the piston-cylinder unit on the piston, which then on the rocker in view of the selected angular ratios an even larger swing torque must be applied, bringing one of the closing angular position is provided.

Alternatively or additionally, it is possible for an actuating stroke of the piston-cylinder unit between the opening angular position and the closing angular position, the axis of action of the rocker is oriented coaxially to the sliding gate. This has the consequence that a movement of the piston in the circumferential direction of the rocker is oriented for this stroke of the piston-cylinder unit, whereby the same movement of the piston has a greater pivoting of the rocker and thus the rotary column and the vehicle door result. Thus, a larger and faster movement of the vehicle door can be brought about for this adjusting stroke than is the case in the opening angular position and the closing angular position.

As mentioned above, it may be desirable that in individual subregions of the slide gate, in particular in the region of the closing angular position and / or the opening angular position, a higher friction of the sliding block against the slide gate is effective to an undesirable movement of the vehicle door by a passenger to avoid. In addition to influencing the frictional force on the angle of the sliding link relative to the axis of action of the rocker influencing the friction conditions can be effected in that the Gleitkulisse Having partial areas in which the movement of the sliding block in the sliding gate requires different frictional forces. For example, it is possible that the slide gate has different widths, in which case the sliding block is clamped in the partial areas with a smaller width, which leads to higher normal forces and thus higher frictional forces. It is also possible that the Gleitkulisse has sections with different coefficients of friction. The different coefficients of friction can be provided by different surface treatments, surface roughness and / or different materials or surface coatings. Preferably, the frictional forces in the partial regions of the sliding link, which correlate with the opening angular position and / or with the closing angular position, are greater than in the intermediate partial regions of the sliding link.

It is entirely possible that the piston-cylinder unit on the one hand and a pivot bearing for the rocker and / or the rotary column (or a housing forming this pivot bearing) are arranged separately from each other. In this case, the piston-cylinder unit and the pivot bearing must each be individually mounted on the vehicle. A coupling of the piston-cylinder unit and the pivot bearing or a pivot bearing housing then takes place via the rocker. However, the invention also proposes that the piston-cylinder unit and a pivot bearing for the rocker and / or for the rotary column form a structural unit, whereby the assembly is significantly simplified. Another advantage of the use of such a unit is that the piston-cylinder unit and the rocker with their arrangement on a common support of the unit cause that (except for the transmission of the pivoting torque on the rotary column) a closed power system is formed. This has the consequence that only the pivoting moment of the rotary column must be supported by the mounting of the unit to the vehicle, while internal forces of the piston-cylinder unit and the rocker need not be absorbed by the bracket to the vehicle.

It is quite possible that the assembly has an open housing, which can then form the said carrier. Preferably, the assembly has a closed housing, which then also provides the carrier for forming a closed power system. In this closed housing, the assembly can be mounted on the vehicle. The assembly is then on the one hand on the rotary column with other components of the vehicle door suspension mechanically in communication. In the simplest case, the assembly has next to the support on the vehicle and the connection via the rotary column only via an interface for fluidic pressurization of the piston-cylinder unit.

For the design of a part of the housing or the housing for the piston-cylinder unit, there are a variety of ways known per se from the prior art. For example, it may be a cast housing, which is configured to complex the piston-cylinder unit (and possibly also for the pivot bearing) for the rocker and / or the rotary column and also with a plurality of sub-housings, a lid u. Ä. Can be trained. For a vehicle door drive device according to the invention, the piston-cylinder unit has a housing or partial housing formed with a tube. On an inner surface of the tube can then be performed under sealing a piston of the piston-cylinder unit. Such a tube can be produced and purchased as semi-finished particularly cost.

When using such a tube as a (partial) housing of the piston-cylinder unit, for example, the piston with a connection region may extend out of the tube, in which case the pivotable articulation of the rocker can take place in the connection region. A compact design results for a further proposal of the invention, for which the tube has a lateral opening through which the rocker extends into the interior of the tube.

It is further possible within the scope of the invention that the vehicle door drive device has a first housing part and a second housing part (and possibly also further housing parts). In the first housing part of the assembly then the piston-cylinder unit is arranged. By contrast, the rocker and / or the rotary column is mounted in the second housing part of the unit. In this case, the rocker extends both in the interior of the first housing part and in the interior of the second housing part.

For such a configuration, the invention further proposes that a relative position of the first housing part and the second housing part is predetermined via at least one dowel pin.

Alternatively or additionally, it is possible that the first housing part and the second housing part are fastened to one another via a clamp. In this case, the clamp extends around the first housing part and the second housing part. With the tightening of the clamp, the two housing parts are then pressed against each other, fixed to each other and under certain circumstances also against each other closed against the entry of contaminants or even (then with the interposition of a seal) sealed against each other.

Advantageous developments of the invention will become apparent from the claims, the description and the drawings. The advantages of features and of combinations of several features mentioned in the description are merely exemplary and can take effect alternatively or cumulatively, without the advantages having to be achieved by embodiments according to the invention. Without thereby altering the subject matter of the appended claims, as regards the disclosure of the original application documents and the patent, further features can be found in the drawings, in particular the illustrated geometries and the relative dimensions of several components and their relative arrangement and operative connection. The combination of features of different embodiments of the invention or of features of different claims is also possible deviating from the chosen relationships of the claims and is hereby stimulated. This also applies to those features which are shown in separate drawings or are mentioned in their description. These features can also be combined with features of different claims. Likewise, in the claims listed features for further embodiments of the invention can be omitted.

The features mentioned in the patent claims and the description are to be understood in terms of their number that exactly this number or a greater number than the said number is present, without requiring an explicit use of the adverb "at least". So if, for example, a sliding block is mentioned, this is to be understood that exactly one sliding block, two sliding blocks or more sliding blocks are available. These features may be supplemented by other features or be the only characteristics that make up the product in question.

The reference numerals contained in the claims do not limit the scope of the objects protected by the claims. They are for the sole purpose of making the claims easier to understand.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1

zeigt in einer räumlichen Darstellung eine Fahrzeugtür-Antriebseinrichtung.

Fig. 2

zeigt in einer Fig. 1 entsprechenden räumlichen Darstellung die Fahrzeugtür-Antriebseinrichtung ohne ein Gehäuseteil einer Kolben-Zylinder-Einheit, wobei sich die Fahrzeugtür-Antriebseinrichtung in einer Schließ-Winkelstellung befindet.

Fig. 3

zeigt einen Schnitt in einer x-y-Ebene durch die Fahrzeugtür-Antriebseinrichtung gemäß Fig. 2, wobei sich die Fahrzeugtür-Antriebseinrichtung ebenfalls in der Schließ-Winkelstellung befindet.

Fig. 4

zeigt einen Fig. 3 entsprechenden Schnitt durch die Fahrzeugtür-Antriebseinrichtung, wobei sich die Fahrzeugtür-Antriebseinrichtung in einer Öffnungs-Winkelstellung befindet.

Fig. 5

zeigt einen Längsschnitt durch die Kolben-Zylinder-Einheit der Fahrzeugtür-Antriebseinrichtung für einen mittleren Stellhub.

In the following the invention will be further explained and described with reference to preferred embodiments shown in the figures.

Fig. 1

shows in a spatial representation of a vehicle door drive device.

Fig. 2

shows in one Fig. 1 corresponding spatial representation of the vehicle door drive device without a housing part of a piston-cylinder unit, wherein the vehicle door drive device is in a closed angular position.

Fig. 3

shows a section in an xy plane through the vehicle door drive device according to Fig. 2 , wherein the vehicle door drive device is also in the closed angular position.

Fig. 4

shows one Fig. 3 corresponding section through the vehicle door drive device, wherein the vehicle door drive device is in an opening angular position.

Fig. 5

shows a longitudinal section through the piston-cylinder unit of the vehicle door drive device for a medium Stellhub.

DESCRIPTION OF THE FIGURES

• eine mechanische Ankopplung einer Drehsäule oder eines Drehsäulenteils 6 an ein in Richtung der Hochachse z orientiertes, hier nicht dargestellte weiteres Drehsäulenteil,
• eine pneumatische Ankopplung von pneumatischen Leitungen über pneumatische Anschlüsse 5 sowie
• eine mechanische Befestigung des Gehäuseteils 3 an dem Fahrzeug, insbesondere einer Aufhängung für mindestens eine Fahrzeugtür (hier nicht dargestellt, unter Umständen auf der Rückseite des Gehäuseteils 3).

Fig. 1 shows a vehicle door drive device 1. The vehicle door drive device 1 has housing parts 2, 3. The vehicle door drive device 1 exclusively interacts with other components

• a mechanical coupling of a rotary column or a rotary column part 6 to a in the direction of the vertical axis z oriented, not shown here further rotary column part,
• a pneumatic coupling of pneumatic lines via pneumatic connections 5 and
• a mechanical attachment of the housing part 3 to the vehicle, in particular a suspension for at least one vehicle door (not shown here, possibly on the back of the housing part 3).

For the illustrated embodiment, the rotary column part 6 is rotatably connected via a keyway 7 with the other, not shown here, rotary column part for forming the rotary column.

The housing part 2 has a tube 8, which is in each case closed by a cover 9, 10 in both end regions, the connection 5 being provided on a cover 10. The tube 8 delimits an interior 11, in which, under radial sealing by sealing elements 12, 13, a piston 14 is displaceably guided in the direction of a longitudinal axis 15, which is oriented parallel to the vehicle longitudinal axis x. The piston 14 defines with the tube and the cover 10 a pressure chamber 16, in which the port 5 opens. The tube 8 has in the transition region to the housing part 3 via a longitudinal recess 17, which is formed here like a slot.

In the housing part 3, the rotary column 4, here the rotary column part 6, rotatably mounted, for which purpose at least one bearing, in particular a sliding bearing or a roller bearing, may be used. Also, the housing part 3 has an interior 18 which is connected by the longitudinal recess 17 with the interior 11 of the housing part 2. In the contact area between the housing parts 2, 3, the walls of the housing part 3 are concave corresponding to the lateral surface of the housing part 2, here corresponding to the partially cylindrical lateral surface of the tube 8, formed so that the housing part 3 is applied over a large area on the lateral surface of the tube 8, wherein the Contact surface between the housing parts 2, 3 preferably in the circumferential direction closed around the longitudinal recess 17 extends. The housing part 3 is stretched over two clamps 19, 20 to the housing part 2, wherein the clamps 19, 20 extend around the two housing parts 2, 3.

In the inner spaces 11, 18 and through the longitudinal recess 17 extends through a rocker 21 (see. Fig. 2 ). The rocker 21 has in an end region via a receptacle 22 through which the rotary column 4 or the rotary column part 6 extends and in which the rotary column 4 or the rotary column part 6 rotatably connected to the rocker 21. In the other end area the rocker 21 carries this a sliding block 23, which is formed here in a rough approximation cube-like. A rotation of the rotary column part 6 about the vertical axis z leads to a pivoting of the rocker 21 in an xy-direction oriented plane. The sliding block 23 is rotatably mounted relative to the rocker 21 about the vertical axis z. The sliding block 23 is slidably guided in a sliding gate 24. For the illustrated embodiment, the slide gate 24 is formed directly from the piston 14.

For the illustrated embodiment, the rocker 21 forms in the sliding block 23 bearing end portion of a bearing eye, a recess or a bore 25, in which a bearing pin 26 is fixed, which extends in the direction of the vertical axis z. In the direction of the vertical axis z, the bearing pin 26 extends on both sides of the rocker 21 out. On both sides of the rocker 21 on the bearing pin 26 each have a sliding block 23a, 23b mounted rotatably.

The piston 14 has on the side remote from the pressure chamber 16 via a recess or cutout 27. The cutout 27 is formed in the lateral direction y continuously and has a roughly approximating a lying mushroom or lying T corresponding cross-section. Below is described as a vertical leg of the vertical leg in the print image of the T and described as a horizontal leg of the horizontal leg in the print image of T, while these are oriented elsewhere in the lying T of the cutout 27. The parallel to the longitudinal axis 15 oriented vertical leg of the T is oriented outwards, whereby said cross section is formed on the side facing away from the pressure chamber 16 side open.

The rocker 21 passes through the longitudinal recess 17 of the tube 8 and the vertical leg of the T of the recess or cutout 27 in the interior of the piston 14 a. The longitudinal axis of the bearing pin 26 is oriented coaxially with the horizontal leg of the T here. The sliding blocks 23a, 23b are in this case in the side regions of the horizontal leg of the T, which form the Gleitkulissen 24a, 24b arranged. Contact surfaces between the sliding blocks 23a, 23b and the sliding scenes 24a, 24b are of the two in the longitudinal direction 15 opposite, oriented in the xz direction end faces 28a, 29a and 28b, 29b of the sliding blocks 23a, 23b and the inner surfaces 30a, 31a and 30b, 31b of the lateral regions of the transverse limb of the T of the recess or cutout 27.

The recess or cutout 27 has in the plane of the vertical leg of the T, ie in a central plane and in the plane in which the rocker 21 is arranged, on the housing part 3 side facing a recess 32. The recess 32 forms together with the vertical leg of the T of the recess or cutout 27 a receiving space 33, in which an end portion of the rocker 21 is arranged and may occur depending on the adjusting stroke of the vehicle door drive device 1 with different extension. The receiving space 33 is preferably formed in the same plane and with the same extension in the circumferential direction about the longitudinal axis 15 or the same extent in the direction of the vertical axis z as the longitudinal recess 17.

Also in Fig. 3 It can be seen that the rocker in the end region facing away from the piston 14 via a receptacle 22 for rotationally fixed connection with the rotary column part 6. Here, the rotary column part 6 in the arranged in the receptacle 22 portion has a flattening or even a rectangular cross-section, which corresponds is formed to the cross section of the receptacle 22. For the illustrated embodiment is in the surrounding area of the receptacle 22 in the rocker 21, a clamping screw 35 can be screwed, by means of which the coupling region of the rotary column part 6 in the receptacle 22 under elastic and / or plastic deformation can be clamped free of play. Such a connection has proved to be advantageous over a connection by means of a feather key, in particular as a result of the alternating load acting here. It is possible that the required contouring of the rotary column part 6 and / or the production of the receptacle 22 takes place in the rocker 21 via a design as a laser part.

It is possible that the specification of the relative position of the housing parts 2, 3 via acting between these dowel pins 36, 37 takes place.

The housing part 2 forms a cylinder 38. With the piston 14 and the cylinder 38, a piston-cylinder unit 39 is formed.

In the Fig. 2 and 3 is the piston-cylinder unit 39 in the closed position, for which the pressure chamber 16 has its minimum volume and the piston 14 is disposed closely adjacent the lid 10. This correlates with the closed-pivot position of the rotary column 4 or the rotary column part 6. The pressurization of the pressure chamber 16 via the connection 5 leads (with simultaneous ventilation of the interior 18, not shown) to the fact that in the figures the piston 14 is moved to the right, that is away from the cover 10, whereby the volume of the pressure chamber 16 increases and what goes along with the pivoting of the rotary column part 6 due to the coupling by the rocker 21.

While in the closed position according to the Fig. 2 and 3 an axis of action 40 with the longitudinal axis 15 has formed an angle 41 of about 40 °, this angle 41 increases with increasing movement of the piston 14 up to an angle of 90 °. For the angle of 90 °, a movement of the piston 14 leads to the largest connected pivotal movement of the rotary column part 6. With further displacement of the piston 14, the angle 41 increases beyond 90 °, until the open position according to Fig. 4 is reached, in which for the illustrated embodiment, the angle 41 is approximately 135 ° (or the counter-angle is 45 °). With the approach to the open position thus the displacement of the piston 14 again leads to a smaller pivoting of the rotary column part 6. With the approach to the open position occurs, as in Fig. 4 it can be seen, the rocker 21 in the receiving space 33 and in the recess 32 a.

In the figures it can be seen that the piston-cylinder unit 39 and the bearing and support for the rocker 21 and the rotary column 4 and the rotary column part 6 form a structural unit 42, which is formed here closed.

It is possible, for example, that the contact surfaces, here the end faces 28, 29, of the sliding block 23 and / or the contact surfaces, in this case the inner surfaces 30, 31, of the slide guide 24 have a surface treatment. It is possible that the sliding block 23 is made of brass and / or the slide gate 24 (and possibly also the piston 14) is made of aluminum.

LIST OF REFERENCE NUMBERS

1

Vehicle door driving device

2

housing part

3

housing part

4

rotating column

5

pneumatic connection

6

Rotating column part

7

Key Connection

8th

pipe

9

cover

10

cover

11

inner space

12

sealing element

13

sealing element

14

piston

15

longitudinal axis

16

pressure chamber

17

longitudinal recess

18

inner space

19

clamp

20

clamp

21

wing

22

admission

23

slide

24

sliding link

25

drilling

26

Bearing shaft or bearing pin

27

Cutout or recess

28

face

29

face

30

palm

31

palm

32

deepening

33

accommodation space

35

clamping screw

36

dowel

37

dowel

38

cylinder

39

Piston-cylinder unit

40

effective axis

41

angle

42

unit

Claims (12)

1. Vehicle door drive device (1) for a vehicle such as a bus or a railway vehicle, comprising

   a) a rotating column (4) or a rotating column part (6)

   b) a fluidic piston-cylinder unit (39) and

   c) a rocker (21),

   d) where the piston-cylinder unit (39) is connected to the rotating column (4) or the rotating column part (6) in a drive connection via the rocker (21) in such a way that by actuating the piston-cylinder unit (3) the rotating column (4) or the rotating column part (6) can be pivoted between a closing angular position and an opening angular position,

   e) the rocker (21) and the piston-cylinder unit (39) are coupled with one another via a sliding block (23) movable in a sliding link (24),

   characterised in that

   f) the sliding block (23) is coupled to the rocker (21),

   g) the sliding link (24), in which the sliding block (23) is arranged, is moved together with a piston (14) of the piston-cylinder unit (39), where the piston (14) embodies the sliding link (24),

   h) the piston (14) forms an accommodating space (33) into which the rocker (21) can enter in order to actuate the piston-cylinder unit (39) and

   i) the sliding link (24) is formed adjacent to the accommodating space (33).
2. Vehicle door drive device (1) according to claim 1, characterised in that

   a) a bearing shaft or a bearing pin (26) extends through the rocker (21) and

   b) the bearing shaft or the bearing pin (26) supports the sliding block (23) on one side of the rocker (21).
3. Vehicle door drive device (1) according to claim 2, characterised in that

   a) the piston (14) forms a first sliding link (24a) on one side of the accommodating space (33) and forms a second sliding link (24b) on the other side of the accommodating space (33),

   b) the bearing shaft or the bearing pin (26) supports a first sliding block (23a) on one side of the rocker (21) and supports a second sliding block (23b) on the other side of the rocker (21) and

   c) the first sliding block (23a) is guided in the first sliding link (24a) and the second sliding block (23b) is guided in the second sliding link (24b).
4. Vehicle door drive device (1) according to one of the preceding claims, characterised in that in the opening angular position and/or the closing angular position the axis of effect (40) of the rocker (21) forms an angle (41) in the range of 30° to 65° with respect to the sliding link (24).
5. Vehicle door drive device (1) according to one of the preceding claims, characterised in that for a positioning stroke of the piston-cylinder unit (39) between the opening angular position and the closing angular position the axis of effect (40) of the rocker (21) is oriented coaxially to the sliding link (24).
6. Vehicle door drive device (1) according to one of the preceding claims, characterised in that the sliding link (24) comprises partial regions with different friction forces.
7. Vehicle door drive device (1) according to one of the preceding claims, characterised in that the piston-cylinder unit (39) and a pivot bearing for the rocker (21) and/or for the rotating column (4) or the rotating column part (6) form a construction unit (42).
8. Vehicle door drive device (1) according to claim 7, characterised in that the construction unit (42) comprises a closed housing from which and/or into which the rotating column (4) or the rotating column part (6) extends.
9. Vehicle door drive device (1) according to one of the preceding claims, characterised in that the piston-cylinder unit (39) comprises a housing or housing part (2) formed with a tube (8), where on an interior surface of the tube (8) a piston (14) of the piston-cylinder unit (39) is sealingly guided.
10. Vehicle door drive device (1) according to claim 9, characterised in that the tube (8) comprises a lateral opening or longitudinal recess (17) through which the rocker (21) extends into an interior space (11) of the tube (8).
11. Vehicle door drive device (1) according to one of claims 7 to 10, characterised in that

    a) the piston-cylinder unit (39) is formed with the first housing part (2) of the construction unit (42),

    b) the rocker (21) and/or the rotating column (4) or the rotating column part (6) are/is supported in a second housing part (3) of the construction unit (42) and

    c) the rocker (21) extends in the interior space (11) of the first housing part (2) and in the interior space (18) of the second housing part (3).
12. Vehicle door drive device (1) according to claim 11, characterised in that

    a) the relative position of the first housing part (2) and the second housing part (3) is set by at least one locating pin (36, 37) and/or

    b) the first housing part (2) and the second housing part (3) are fixed to one another via at least one bracket (19, 20), which extends around the first housing part (2) and the second housing part (3).

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