Patent Grant
11136049
This patent application is a U.S. National Phase of International Patent Application No. PCT/EP2017/071881, filed Aug. 31, 2017, which claims priority to German Patent Application No. 10 2016 116 317.1, filed Sep. 1, 2016, the disclosure of which being incorporated herein by reference in their entireties.
The disclosed embodiments relates to a device for sealing at least one door leaf for a rail vehicle, to a rail vehicle and to a method for sealing a sliding door.
In rail vehicles, sliding doors are often used. Sliding doors run, owing to the design, in an opening direction or closing direction along at least one guide rail. Grinding seals can be used to form a seal along this guide rail.
The disclosed embodiments is based on the object of making available an improved device for sealing at least one door leaf for a rail vehicle, an improved rail vehicle and an improved method for sealing a sliding door.
According to the disclosed embodiments, this object is achieved by a device for sealing at least one door leaf for a rail vehicle, a rail vehicle and a method for sealing a sliding door.
Exemplary embodiments of the approach presented here are illustrated in the drawings and explained in more detail in the following description. In the drawings:
In the following description of advantageous exemplary embodiments of the present disclosed embodiments, identical or similar reference symbols are used for the elements which are illustrated in the various figures and act in similar ways, wherein a repeated description of these elements is dispensed with.
A device for sealing at least one door leaf for a rail vehicle is presented, wherein the device has at least one sliding element which is designed to move the door leaf in a z direction of the rail vehicle in the region of a closed position, in order to press a sealing element of the door leaf against a counter-sealing element of a portal of the rail vehicle.
Grinding of seals in a sliding door or pivoting sliding door can be largely prevented if a door leaf of the sliding door does not have any contact with the seals during the closing process and is in contact with the seals only as close as possible to a closed position. This can be achieved by a vertical movement of the door leaf. The door leaf can be moved using a guide system in a closing direction. In order in addition to achieve improved thermal insulation and additionally or alternatively to achieve improved sound insulation, it is possible to use a lifting device, also referred to as an elevating device, by which the door leaf can additionally be moved in the vertical direction, with the result that the vertical movement can be carried out. The lifting device can be embodied as a component of the guide system or as an independent device, and according to one embodiment can also be embodied as a retrofittable device. Therefore, the device for sealing can be understood, according to different embodiments, to be an independent lifting device as well as a component of the guide system or the entire guide system.
The door leaf can be, for example, a door leaf of a sliding door or of a pivoting sliding door. According to one embodiment, modularity is provided. For example, according to one embodiment, the guide system for the door leaf can be equipped with the lifting device without changes or without significant changes. Therefore, the lifting device can also be embodied as a subsequently retrofittable unit. A customer can therefore advantageously choose whether he wants to have a guide system “only” for opening and closing a door or else one with an improved sound seal or thermal seal by including the lifting device. This option can advantageously also be subsequently retrofitted. Therefore, the device for sealing can comprise at least one retrofittable component which can be installed in an existing door system, in order to make the door system movable in the vertical direction, and as a result permit improved sound protection and/or thermal protection.
The sliding element can be embodied as an active component which is designed to move the door leaf in response to a movement signal. The sliding element can also be designed to move the door leaf in an x direction of the rail vehicle, in order to move the door leaf between the closed position and an open position. Therefore, the device for sealing can comprise further functions of the guide system or can itself constitute the guide system. The sliding element can be embodied as a passive component which is designed to carry out a movement of the door leaf in the z direction using a movement of the door leaf in the x direction.
The sliding element can have at least one pivoting lever which can rotate about a pivoting point and has a guide arm. The pivoting point can be coupled to a supporting roller unit which is linearly movable along a supporting rail which is linear at least in certain sections. The guide arm is supported or capable of being supported on the guide path, for example, via a guiding roller unit which is movable along a guide path. In this context, the pivoting lever can have an attachment point for the door leaf.
According to one embodiment, the pivoting lever can have a first guide arm and a second guide arm. In this context, the first guide arm can have a first attachment point on which a first supporting roller unit for guiding a first guide arm along a guide path is arranged. The second guide arm can have a second attachment point, on which a second supporting roller unit for guiding the second guide arm along the guide path is arranged. The pivoting point can be coupled to the door leaf and can be arranged between the first attachment point and the second attachment point. Points, such as the pivoting point or the attachment points, can for example also be understood to be a position or location on the pivoting lever or, for example, also a passage opening for receiving an axle or shaft, or the center point of such a passage opening. The arrangement of the pivoting point between the attachment points can mean that the pivoting point can be arranged in the x direction, that is to say in parallel with the longitudinal axis of the vehicle, between the attachment points, wherein there can be an offset in the z direction, that is to say in parallel with a vertical axis of the vehicle. The guide path can have a linear guide face and a connecting link. The connecting link can be bent with respect to the guide face. A connecting link can serve as a guide element, for example for the guide roller unit. The guide roller unit can be steered onto a trajectory outside a plane of the guide face by the connecting link.
The guide path can be formed by the supporting rail or a linear section of the supporting rail. The connecting link can be connected in a positionally fixed fashion to the supporting rail. For example, the connecting link can be screwed on. The screwing on permits the connecting link to be easily positioned and secured. For example, the connecting link can be a wedge which is fitted onto the supporting rail.
The guide path can be formed by the supporting rail. The guide face and/or the connecting link can be embodied as a cutout from the supporting rail. For example, the guide path and/or the connecting link can be milled into the supporting rail. The milling permits the pivoting arm to be positioned precisely.
A transition from the guide face to the connecting link can be arranged less than 200 mm, for example also less than 120 mm or less than 80 millimeters before a closed position of the door leaf. As a result of the short distance, a short grinding path between the seals can be achieved. The first supporting roller unit can have a first supporting roller with a guide groove for guiding the first supporting roller along the linear guide face. The second supporting roller unit can have at least one second supporting roller with a guide groove for guiding the second supporting roller unit along the linear guide face and a connecting link face for guiding the second supporting roller unit along the connecting link. The movement path can be embodied with one track or two tracks. In the case of a two-track embodiment, the connecting link can be arranged in parallel with a section of the linear guide face. If the first supporting roller does not have a connecting link face, the first supporting roller can be guided further next to the connecting link on the specified section of the linear guide face, while the second supporting roller is guided on the basis of its connecting link face on the connecting link.
The attachment point can have travel of less than 15 millimeters. A small amount of travel is sufficient to separate the seals.
A load arm of the pivoting lever between the pivoting point and the attachment point can be shorter than the guide arm. As a result of the central position of the attachment point, a force acting on the supporting roller unit and the guide roller unit can be reduced.
The pivoting point can be arranged between the attachment point and the guide arm. The supporting roller unit can be loaded in an opposite direction to the guide roller unit by the attachment point at the free end. Therefore, the guide arm at least partially encloses the rail.
The supporting rail can have a convex supporting profile. The supporting roller unit can have at least one supporting roller with a concave rolling profile. The supporting profile can be at least partially enclosed by the rolling profile. Profiled rollers and rails result in good lateral guidance for the door leaf. An additional lateral guidance mechanism can therefore be dispensed with.
The guide system can have a door leaf carrier which is rotatably mounted at the attachment point. The door leaf carrier can be connected to the pivoting lever via a clip. The door leaf can be adjusted in its position by a door leaf carrier.
The door leaf carrier can be rotatably mounted in a further pivoting lever. Oscillation of the door leaf can be prevented by two pivoting levers.
Furthermore, a rail vehicle having a device according to the approach presented here is presented, wherein the supporting rail is oriented in the x direction, and the door leaf of a sliding door of the rail vehicle is connected to the attachment point of the pivoting lever, wherein the device is designed to raise or lower the door leaf in the region of the closed position.
In addition, a method for sealing a door leaf for a rail vehicle is presented, wherein in an operation of movement the region of a closed position of the door leaf the door leaf is moved in a z direction of the rail vehicle using the sliding element, in order to press a sealing element of the door leaf against a counter-sealing element of a portal of the rail vehicle.
The device 104 has at least one sliding element 112. The sliding element is designed to move the door leaf 106 in the z direction in the region of a first closed position of the sliding door 102. In this context, a sealing element of the door leaf 106 is pressed against a counter-sealing element of a portal 107 of the rail vehicle 100. The door leaf 106 can be raised or lowered to form a seal.
The sliding element 112 can be an active component, that is to say an actuator, such as, for example, a pneumatic cylinder or an electric motor. According to one exemplary embodiment, the sliding element 112 is then actuated directly, in order to move the door leaf 106 in the z direction. The sliding element 112 can subsequently be installed in the sliding door 102. For example, the sliding door 102 can already have receptacles for the sliding element 112.
In one exemplary embodiment, the device 104 comprises a supporting rail 108 which is oriented in a longitudinal direction of the vehicle, and a guide path 110 which is oriented essentially in the longitudinal direction of the vehicle. The sliding element 112 is embodied as a pivoting lever 112 and is movably mounted on the supporting rail 108 and connected to the door leaf 106. The pivoting lever 112 is supported on the guide path 110 at least nearly to a closed position of the door leaf 106, in order to bring about the vertical movement of the door leaf 106 via the pivoting lever 112.
According to one exemplary embodiment, the supporting rail 108 is embodied in an overall linear fashion. Alternatively, the supporting rail 108 can be embodied in a linear fashion in certain sections. According to one exemplary embodiment, the supporting rail 108 is embodied in a linear fashion at least in one section which forms a guide path.
The device 104 can be referred to as a guide system 104 and is designed to lower the door leaf 106 during a closing movement of the sliding door 102 in the region of the closed position, in order to bring seal devices on an upper edge and a lower edge of the sliding door into contact. Conversely, the door leaf 106 can be raised in the region of the closed position during the opening process, in order to separate the seal devices.
According to the approach described here, sliding doors 102 can advantageously be sealed very well both in the upper and in the lower region. For this purpose, there is no need for a grinding seal which is difficult to adjust. The sealing of the sliding doors 102 is required in order to improve the comfort for the passengers with respect to the sound insulation and the pressure tightness or also the thermal insulation for low energy consumption.
In the approach presented here, the door leaf 106 is raised or lowered. The raising or lowering can be referred to as displacement in the z direction. This function is basically dependent on the drive system for driving the door leaf 106 in the x direction and for locking the door leaf 106. As a result of the raising or the lowering, a sealing face in the upper and/or lower region of the door leaf 106 is sealed in addition to the rear edge and front edge or the finger protection rubber. The seal at the top or the bottom is effected by virtue of the fact that a seal is pressed against a sealing face, or the distance between two sealing faces is reduced. For example, the sealing faces can rest one on the other, as a result of which the distance between the sealing faces is zero. Basically, the raising of the door leaf 106 is carried out as close as possible to the closed position of the door leaf 106.
In one exemplary embodiment, the z movement of the door leaf 106 is also carried out by active components such as servomotors, magnets or cylinders. In a further exemplary embodiment, the z movement of the door leaf 106 is achieved by the drive, already present for the sliding movement, in the x direction, and suitable kinematics. The raising or lowering or the z travel of the sliding door is optimally carried out only when the closed position is reached, as a result of which a pure z movement without additional x movement and y movement is achieved, in order to minimize as far as possible a grinding distance of the seal at the top and the bottom. The raising can be effected, for example, by a lever system 112. Correspondingly, the door leaf can be lowered, as illustrated here.
In one exemplary embodiment, the rail vehicle 100 has a pivoting sliding door 102 which is raised or lowered by the device 104 in the z direction in the region of the closed position, in order to seal the sealing elements.
The guide path 110 is formed here by a guide face 218 of the supporting rail 108 and a connecting unit 220 which is screwed onto the supporting rail 108. The connecting unit 220 forms a rolling face, oriented obliquely with respect to the guide face 218, for the guide roller 216. When the guide roller 216 rolls on the connecting unit 220, the pivoting lever 112 is rotated about its rotational axis 200, and the door leaf 106 is raised. In one exemplary embodiment, the guide path 110 is formed by the guide face 218 and a cutout from the supporting rail 108. The guide roller 216 then rolls from the guide face 218 into the cutout, and the pivoting lever 112 rotates in the opposite direction about the rotational axis 200, wherein the door leaf 106 is lowered.
The load arm 208 is oriented essentially horizontally here when the guide roller 216 bears on the guide face 218. The guide arm 206 is bent with respect to the load arm 208 and points obliquely downward. The load arm 208 is approximately half as long as the guide arm 206. As a result, a lever ratio is produced in which the guide roller 216 is pressed with approximately half the weight force of the door leaf 106, loading the load arm 208, against the guide path 110. In this context, approximately one and a half times the weight force loads the supporting roller 204.
In other words,
In other words,
Parameters can be considered for the optimization with respect to a smallest possible displacement force or drive force with the smallest possible sealing travel, that is to say the travel of the door leaf 106 in the z direction. In this context, at least a small degree of release is necessary in order to prevent grinding of the seal over the entire travel distance, for example travel of the door, that is to say the movement in the x direction. For example, the lever ratios owing to the coordinate positions of the pivoting point 200, of the attachment point 212 and of the guide point are taken into account. Likewise, the weight force of the door leaf 106 can be taken into account. Furthermore, the sealing forces (N/mm) at the top and the bottom and the sealing forces as a result of the seal on the rear edge and on the finger protection rubber can be taken into account. A parameter is also a maximum possible drive force and a maximum necessary travel in the z direction. Inclination of the connecting link 220 can also be taken into account. A further parameter is grinding travel of the transverse seals at the top and/or bottom. This should be minimal in order to minimize the sealing wear. Likewise, a desired travel distance in the x direction just before the closed position can be taken into account in the case of a connecting link inclination of zero degrees. This can ensure that in the closed and locked position of the entry system no force is generated in the opening direction, which would counteract the locking. If the roller in the connecting link 220 is at an angle greater than zero degrees, a force component in the x direction is automatically produced as a function of the weight force of the door leaf 106 and of the connecting link angle.
Raising of the door leaf 106 additionally provides the advantage that when there is any emergency activation of the system 104 the door leaf 106 is pressed in the opening direction via the connection link 220 by the weight force of the door leaf 106, and a certain gap can therefore be produced between the finger protection rubbers.
The guide face 218 is embodied here as a cutout from the supporting rail 108. The oblique rolling face is embodied as a runout of the cutout. If the guide roller 216 is arranged in the region of the guide face 218, it is essentially not loaded and can lose contact with the guide face. If the guide roller 216 is arranged in the region of the oblique rolling face, the load arm 208 is deflected laterally upward with the door leaf 106.
Here, the sealing face 600 is arranged so as to be movable with the door leaf 106, and the sealing element 602 is arranged on the frame 606.
The door leaf 106 is guided here in the y direction by a lower portion of the frame 606. The lower portion of the frame 606 is arranged in a pocket and is also movable in the z direction in the pocket. A tread bar profile 608 is arranged on an outer side of the sliding door 102. The door leaf 106 runs in a slit between the tread bar profile 608 and a floor of the rail vehicle 100.
The sealing face 600 is formed by a lower transverse profile 610 of the door leaf 106. A molded part 612 is arranged as a sealing profile on a rear edge of the door leaf.
In other words,
In other words,
The upper sealing face 800 is here a component of an upper transverse profile of the door leaf 106.
In other words,
The seal 802 itself can be provided as a complete, peripheral sealing frame on the portal 107 of the vehicle 100. As a result, a very good junction between the longitudinal seal and the transverse seal is provided, and at the junction of the door leaves. The door leaf 106 is the sealing face 800 and does not require a receptacle for seals, apart from the finger protection rubbers.
If such a solution is not possible, the seals 802 can also be provided on the door leaf 106, wherein the sealing faces 800 are then provided on the portal 107. As a result of the raising of the door seals 802, the seals or molded parts can be embodied at the junctions between longitudinal seals and transverse seals in such a way that there is no leakage area present in the closed position.
The connecting link 220 is connected in a positionally fixed fashion to the supporting rail 108. For example, the connecting link 220 is welded or bonded to the supporting rail 108. The connecting link 220 has the oblique face 1002 which is oriented obliquely with respect to the guide face 218, and a latching face 1004 which is oriented in parallel with the guide face 218. The guide roller 216 is arranged on the latching face 1004 in the closed position. From a start of the oblique face 1002 as far as the closed position the connecting link 220 has a length of less than 80 millimeters.
During a closing movement, the guide roller 216 rolls downward over the oblique face 1002. As a result, the attachment point 212 is raised on the opposite side of the pivoting point 200. The attachment point 212 is raised by less than 15 millimeters.
According to a further exemplary embodiment, the operation 1204 is embodied together with or in combination with a further closing movement of the door leaf. For this purpose, the method 1200 also has, for example, a guidance operation 1202 in which the door leaf of the sliding door is guided, according to the approach presented here, from an open position in a closing direction as far as a region of a closed position using a guide system. Between the open position and the region of the closed position, at least one sealing face, oriented in the closing direction, of the sliding door and at least one sealing element, oriented in the closing direction, of the sliding door are guided in a contactless fashion using the guide system. In the raising or lowering operation 1204, the door leaf is raised or lowered in the region of the closed position using the guide system, in order to make contact with the sealing face and the sealing element.
Before or during the opening of the door leaf, the operation 1204 can be carried out again, wherein the door leaf is then moved in the opposite Z direction compared to the movement during the closing process, in order to release the sealing element of the door leaf from the counter-sealing element of the portal. Correspondingly, the operation 1202 can be carried out again during the opening process, wherein the door leaf is also subjected to an opposing movement in comparison to the movement during the closing process.
The first guide arm 1351 has at its free end a first attachment point 1355, and the second guide arm 1352 has at its free end a second attachment point 1356. According to this exemplary embodiment, the guide arms 1351, 1352 each have, in the region of the attachment points 1355, 1356, a passage opening, for example for receiving a shaft or axle. According to the exemplary embodiment shown, a first supporting roller 1360 of a first supporting roller unit 1361 is attached to the first guide arm 1351 at the first attachment point 1355, and at least one second supporting roller 1363 of a second supporting roller unit 1364 is attached to the second guide arm 1352 at the second attachment point 1356. The supporting roller units 1361, 1364 can comprise not only the supporting rollers 1360, 1363 but, for example, also axles for attaching the supporting rollers 1360, 1363 to the attachment points 1355, 1356.
According to one exemplary embodiment, the pivoting lever 1350 is embodied as a planar plate which extends in the x-y plane. Alternatively, the pivoting lever 1350 can also have at least one bend. The attachment points 1355, 1356 are arranged opposite with respect to one another in the x direction. The pivoting point 200 is arranged between the attachment points 1355, 1356 with respect to the x direction. If the guide arms 1351 and 1352 run, in contrast to the exemplary embodiment shown in
A supporting rail 108 with a guide face 218 and a connecting link 220 of the vehicle or of a door portal of the vehicle is shown in
According to one exemplary embodiment, a distance in the x direction between the first attachment point 1355 and the pivoting point 200 has the value a and a distance in the x direction between the second attachment point 1356 and the pivoting point 200 has the value b. The value a is, for example, larger, for example at least twice as large, as the value b. In the illustrated position of the device 104, a force F1 acts at the first attachment point 1355, a force F2 acts at the second attachment point 1356, and a force F3 acts at the pivoting point 200, in the downward direction.
The door leaf weight force F3, at the connecting point to the door leaf 106, is located between the first supporting roller 1360 (force F1) and the second supporting roller 1363. The second supporting roller 1363 moves, in the region of the closed position of the door leaf 106, onto a connecting link 220 which is shaped as a wedge. According to this exemplary embodiment, the first supporting roller 1360 moves exclusively on the guide face 218 which is shaped as a running face. The second supporting roller 1363 basically also rolls on the guide face 218, but just before the closed position it moves onto the oblique face 1002 of the connecting link 220 and as a result controls the vertical movement of the door leaf 106.
The pair of rollers, composed of the supporting rollers 1360, 1363, is formed, on each door leaf 106, at least on the front edge and the rear edge of the door leaf 106.
Therefore, according to one exemplary embodiment, the device 104 has a further pivoting lever with further supporting rollers and a further connecting link. In order to integrate this arrangement in as space saving a fashion as possible with respect to the space requirement in the longitudinal direction (x direction) and in terms of the required rail length of the supporting rail 108, a certain overlap is possible. Such an overlap permits the second supporting roller on the front edge to move up to the connecting link 220 of the second supporting roller 1363 on the rear edge of the door leaf 106, as can be seen in
The advantage of the exemplary embodiments shown in
The first supporting roller 1360 has a guide groove 1480 for guiding the first supporting roller 1360 along the guide face 218. The second supporting roller 1363 has a further guide groove 1483 for guiding the second supporting roller 1363 along the guide face 218, and a connecting link face 1485, arranged next to the guide groove 1483, for guiding the second supporting roller 1363 along the connecting link 220. According to this exemplary embodiment, the connecting link face 1485 is formed by a cylindrical section of the second supporting roller 1363.
According to this exemplary embodiment, the guide face 218 is formed by a U-shaped section of the supporting rail 108.
If an exemplary embodiment comprises an “and/or” conjunction between a first feature and a second feature, this is to be understood that according to one embodiment the exemplary embodiment has both the first feature and the second feature, and according to a further embodiment the exemplary embodiment has either only the first feature or only the second feature.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2016 116 317.1 | Sep 2016 | DE | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2017/071881 | 8/31/2017 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2018/041954 | 3/8/2018 | WO | A |
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| Number | Date | Country | |
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| 20190193758 A1 | Jun 2019 | US |
