EP1479864B1 - Emergency unlocking mechanism for plug in door for vehicles, in particular for public transport - Google Patents

Abstract

The system includes a cylinder (5), a spring (5.1) and a slotted link (6) engaging a door opening bolt (7). A knob or plunger operates a 3/2-way valve supplying compressed air to the cylinder. The drive supplements an electric motor (4) connected to the upper support and guide system (3) for the door frame members (2) and the left (1A) and right (1B) door leaves.

Description

The invention relates to an emergency unlocking device on a sliding door for vehicles, in particular vehicles of public transport with the features of the preamble of claim 1 protection.

Sliding sliding doors of the type assumed here are known per se and described for example in EP 1 040 979 A2. They are generally designed so that a spreading lever on which the reaction force of the drive device for generating the displacement movement of the support guide in the transverse direction to the door opening exerts a torque in the closed position of the support guide is in a position at or shortly after the dead center of its pivoting movement Locking the carrying guide in the closed position.

In this position, the door can not be opened by pressing inside.

It is known to provide an emergency unlocking device in such pivoting sliding doors, e.g. Passengers can always open the door in case of power failure to leave the vehicle. The emergency release device has a spring-loaded cylinder, which is in the normal state under the pressure of the supplied compressed air and locked in this normal state, the tensioned spring. In a venting of the spring-loaded cylinder by means of a Nothahns the tensioned spring is released, and thereby the support guide is pressed under the force of this spring to the outside to at least the above-mentioned Totpunktstellung addition, so that then the door can be fully opened by hand.

In such Notentriegelungsvorrichtungen the problem has now emerged that the door after an emergency release and opening can not be returned by hand in the closed position, since the force of the released relaxed spring of the spring cylinder prevents a pushing back of the support guide to the starting position. It must therefore be taken special measures to close the door after an emergency release again. For this purpose, it is necessary to put the spring-loaded cylinder under pressure again, so that its spring is tensioned and no resistance opposes a return movement of the carrying guide in the starting position of the closed door.

In DE 197 45 753 A1 an emergency release system for a power-operated vehicle door is described in which the door leaf is held by means of a drive member in its closed position in a dead center-near locking position. In order to open the door leaf in case of failure of the power-drive, an emergency operating member is provided, which is movable by means of a pneumatic actuator in an emergency unlocking position in which the drive member is in a manual operation of the door leaf enabling position. In this position, the door leaf is moved back to a manual return operation of acting as an emergency valve switching member in a locking position, which does not correspond to the normal locking position, but a lying before the dead center position.

The invention has the object of providing an emergency unlocking device with the features of the preamble of claim 1 protection in such a way that the simplest technical means the re-closing of the emergency unlocked sliding door by hand on the dead center is possible.

The solution of this object is achieved according to the invention with the features of the characterizing part of the protection claim 1. Advantageous developments of the invention emergency release device are described in the dependent claims.

The basic idea of the invention is to simultaneously use the emergency maneuver with which the emergency unlocking of the sliding sliding door is triggered in order to create conditions under which the door can be closed again by hand. The invention is based on the idea that the non-pressurized state of the spring-loaded cylinder must be maintained only until the door or the support guide is pressed beyond the dead center out to the outside, after which they can be fully opened at any time. This means that the emergency maneuver can be returned to the rest position very short time after his operation. The training is such that in the rest position of the spring-loaded cylinder ventilated again and the spring is guided in the cocked position. The complete opening of the door, which has already been pushed beyond the dead center, this is not hindered, and it is always possible to re-close the door by hand, because the spring of the spring core memory is returned to the cocked position and does not hinder the pushing of the support guide.

Since a passenger who actuates the emergency release device triggers this emergency maneuver by operating the emergency maneuver, the simplest embodiment of the solution according to the invention of the problem consists in returning the actuation element of the emergency valve to the inoperative position after release under spring force, so that so that the emergency manhole itself gets into the rest position. Of course, it is also possible to provide a releasable coupling between the actuating element and emergency valve, so that when the passenger, the actuator yet holds longer, the emergency valve itself can still be returned by spring force in the rest position. It is also possible to provide a timer, which returns the emergency maneuver regardless of the position of the actuating element after a predetermined time in the rest position.

In general, it is advantageous or even prescribed that both in the vehicle and on the outside of the vehicle in the area of the sliding door sliding an emergency valve is arranged so that the door can be unlocked both from the inside and from the outside. Of course, it makes sense to then equip both emergency valves with the device described above, which allows the re-closing of the door by hand. In order to prevent inadvertent actuation of the emergency maneuver while driving, it is advantageous to provide here a corresponding device for preventing inadvertent actuation of the emergency maneuver. This can be done, for example, in a arranged inside the vehicle emergency valve by a magnetic device that removably fixes the emergency valve in the rest position. In an emergency valve arranged on the outside of the vehicle, it may be advantageous to make the emergency manure lockable by means of a locking device which can be actuated by means of a key, so that the parked vehicle can not be opened via the outer emergency manhole.

The emergency unlocking device according to the invention can be used both in sliding doors with a door leaf as well as sliding doors with two against each other in their longitudinal direction movable door leaves, which are suspended in each case via a guided on a round rod carriages in the carrying guide. As a drive device can serve a common for both door leaves electric motor, and the transmission of the reaction force to at least one end of the support guide can be done in a conventional manner via a coupling rod.

In the following an embodiment of an emergency release device according to the invention will be explained in more detail with reference to the accompanying drawings.

Fig. 1

eine zweiflügelige Schwenkschiebetür von innen gesehen im voll geöffneten Zustand;

Fig. 1A

den Bereich E aus Fig. 1 in vergrößerter Darstellung;

Fig. 2

in gegenüber Fig. 1A weiter vergrößerter Darstellung den Federspeicherzylinder der Notentriegelungsvorrichtung nach Fig. 1 und 1A mit Anschlusselementen im Notbetriebs-Zustand;

Fig. 3

in einer Darstellung analog Fig. 2 den Federspeicherzylinder im Betriebszustand, in dem die Tür ganz geöffnet ist;

Fig. 4

in einer Darstellung analog Fig. 2 den Federspeicherzylinder in dem Betriebszustand, in dem die Tür geschlossen ist;

Fig. 5

in einem pneumatischen Schaltbild die Druckluftzuführung zum Federspeicherzylinder mit dem Nothahn.

In the drawings show:

Fig. 1

a double-leaf sliding door seen from the inside in the fully open state;

Fig. 1A

the area E of Figure 1 in an enlarged view.

Fig. 2

in comparison with FIG. 1A further enlarged view of the spring-loaded cylinder of the emergency unlocking device according to Figures 1 and 1A with connection elements in the emergency mode.

Fig. 3

in a representation analogous to Figure 2 the spring-loaded cylinder in the operating state in which the door is fully open.

Fig. 4

in a representation analogous to Figure 2 the spring-loaded cylinder in the operating state in which the door is closed.

Fig. 5

in a pneumatic circuit diagram, the compressed air supply to the spring accumulator cylinder with the emergency valve.

Fig. 1 shows a sliding door for a public transport vehicle. In the following, only the elements of the swing sliding door, which are important for the description of the emergency release device.

In Fig. 1, the door is shown from the inside in the fully opened state. The door leaves 1A and 1B are in a manner not shown separately against each other in its longitudinal direction slidably suspended in each case on a support guide 3. They can be brought together from the fully open position shown in Fig. 1 in a mutually facing sliding movement, and then they can together with the support guide 3 in the transverse direction to the door opening inwards a closed position are performed, in which the door leaves 1A and 1B are within the door frame 2 and thus within the vehicle wall. In the opposite direction, the support guide can be moved from a closed position into a displaced position to the outside, in which the door leaves are outside again in front of the vehicle wall and can be pushed apart for full opening of the door in its longitudinal direction. When driving device is used in the illustrated embodiment, an electric motor 4, from which the door leaves 1A and 1B are moved in a manner not shown, for example via a belt drive. From the reaction force of the drive device, the force for the displacement of the carrying guide is derived in a manner known per se and described, for example, in EP 1 040 979 A2, to the outside or inside. In this case, the transmission of the reaction force can take place depending on the position of the electric motor 4 to the remote end of the carrying guide via a coupling rod. The transmission of the reaction force to the support guide 3 takes place, as also explained in the above-cited document, in such a way that a force transmitting spreader in the closed position of the support guide 3 is in a position at or shortly after the dead center of its pivoting movement Locking of the carrying guide 3 in the closed position. In this position, the door can not be opened by hand even by pressing the inside.

So that the door can be opened by the passengers in an emergency, for example, even in case of power failure, an emergency release device is provided. It has a connected to the compressed air system of the vehicle spring-loaded cylinder 5, which is connected in the manner shown in FIG. 4 via a 3/2-way valve 8 to the compressed air network 9. The 3/2-way valve 8 is designed as an emergency valve, which is actuated via an actuating element 8.1, which may be formed, for example, as an actuating lever. The 3/2-way valve 8 has a rest position in which the spring-loaded cylinder 5 is connected to the compressed air network 9 and is pressurized. In this state, As can be seen from FIGS. 3 and 4, the spring 5.1 is tensioned and, as will be explained in more detail below, the emergency unlocking device becomes inoperative. If the 3/2-way valve is brought by means of the actuating element 8.1 in the position shown in Fig. 5 and in which the spring-loaded cylinder 5 is connected to the outer space, the spring-loaded cylinder 5 is vented, whereby the pressurization is omitted and the Spring 5.1, which was held on the piston rod 5.2 of the spring-loaded cylinder 5 and a spring plate 5.3 with ventilated spring-loaded cylinder 5 in the tensioned state, relaxes and gets into the position shown in Fig. 2.

The piston rod 5.2 of the spring-loaded cylinder 5 is connected via a holding element 6.1 with a long hole tab 6, and the device not shown in detail for moving the carrying guide 3 has an opening pin 7, which is guided in the elongated hole 6. The arrangement is such that outside the emergency operation, ie when the spring 5.1 in the "operating state door closed", as shown in Fig. 4, the opening pin 7 at the inner end of the slot of the long hole tab 6, while in the "operating state door open "as shown in Fig. 3 at the outer end of the slot of the long hole tab 6 is located.

Upon actuation of the emergency release is the movement of the piston rod 5.2 of the spring-loaded cylinder 5 under the action of the spring 5.1, as shown in Fig. 2 under the keyword "emergency operation", the inner end of the slot of the long hole tab 6 is moved together with the opening pin 7. This sliding movement causes the support guide 3 is pushed outwards at least beyond the dead position and then the door can be fully opened by hand. However, this type of emergency release has the disadvantage that when spring-loaded cylinder 5 and spring 5.1 are in the position shown in Fig. 2, the support guide 3 and thus the door is not in the hand Closed position can be moved back, because due to the position of the long hole tab 6 of the opening bolt 7 against the strong pressure of the spring 5.1 can not be moved back into the position shown in Fig. 4. For this reason, the emergency unlocking device is designed in such a way that the emergency valve, so the 3/2-way valve 8, when releasing the actuator 8.1 returns under spring force in the rest position in which the spring cylinder 5 is ventilated by the compressed air system 9 ago and returns to the operating state shown in Figs. 3 and 4. The spring 5.1 is again in the tensioned state, and now at any time the support guide 3 can be returned by hand on the dead center position in the closed position and thus the door to be closed.

Claims (7)

1. An emergency unlocking device on a swinging-sliding door for vehicles, particularly vehicles of the local public transport system, having at least one door leaf which is displaceable in its longitudinal direction and is hung and displaceably guided in a supporting guideway which, together with the door leaf, can be moved from a closed position, in which the door leaf is located in the vehicle wall, into a displaced position, in which the door leaf is located on the outside in front of the vehicle wall, and back, and having a drive device for the displacement of the door leaf, the force for the movement of the supporting guideway being derived from the reaction force of the drive device and the arrangement being such that the door is guided from the closed position into the displaced position and back via a dead centre position by means of which it is held shut in the closed position, the emergency unlocking device having a spring cylinder and the tensioned spring being released and the supporting guideway being pressed outwards at least beyond the dead centre position under spring force when the spring cylinder is vented by means of an emergency cock, characterised in that the emergency cock (8) is provided with a device for its automatic return from the operating position into the rest position, said device having a spring element which, when the actuating element (8.1) is released and/or a predetermined time period has elapsed, returns the emergency cock (8) into the rest position, the spring cylinder (5) being ventilated in the rest position and the spring (5.1) being guided into the tensioned position in which it does not exert a spring force on the supporting guideway (3).
2. An emergency unlocking device according to Claim 1, characterised in that the emergency cock (8) is constructed as a 3/2 directional control valve by way of which the spring cylinder (5) can be connected to a compressed-air source (9), the connection being such that the spring cylinder (5) is connected to the compressed-air source (9) and ventilated in the rest position, whilst it is vented in the operating position and the 3/2 directional control valve returns from the operating position into the rest position under spring force when an actuating element (8.1) is released.
3. An emergency unlocking device according to one of Claims 1 and 2, characterised in that the device for moving the supporting guideway (3) outwards from the closed position beyond the dead centre position has an opening pin (7) which is guided in a slot plate (6) connected to the piston rod (5.2) of the spring cylinder (5), the arrangement being such that, when the spring (5.1) is tensioned, the opening pin (7) is located at the inner end of the slot in the closed position and at the outer end of the slot in the open position and, upon actuation of the emergency unlocking system by the movement of the piston rod (5.2) under the effect of the spring (5.1), the inner end of the slot of the slot plate (6) is displaced with the opening pin (7).
4. An emergency unlocking device according to one of Claims 1 to 3, characterised in that an emergency cock is arranged both in the vehicle and on the outside of the vehicle in the region of the swinging-sliding door.
5. An emergency unlocking device according to Claim 4, characterised by a device for preventing unintentional actuation of the emergency cock.
6. An emergency unlocking device according to Claim 5, characterised in that particularly the emergency cock arranged in the vehicle is releasably fixed in the rest position by a magnetic device.
7. An emergency unlocking device according to Claim 5, characterised in that particularly the emergency cock arranged on the outside of the vehicle is lockable by a locking device which is be actuated by means of a key.

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