EP1479864A1 - 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 pivoting sliding door for vehicles, in particular public transport vehicles with the features of the preamble of claim 1 protection.

Sliding sliding doors of the type required here are known and for example, in EP 1 040 979 A2. They are generally like that designed that a spreading lever, on which the reaction force of the drive device for generating the displacement movement of the carrying guide in Transverse direction to the door opening exerts a torque in the closed position the carrying guide is in a position in or just past the dead center of his Pivoting movement is to lock the carrying guide in the closed position.

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

It is known in such a sliding sliding doors an emergency release device to provide e.g. the passengers at any time in case of power failure the Can open the door to leave the vehicle. The emergency release device has a spring-loaded cylinder, which in the normal state under pressure the supplied compressed air is and in this normal state, the tensioned spring locked. In a venting of the spring-loaded cylinder by means of a Nothahns the tensioned spring is released, and thereby the support guide is under the force of this spring pushed outwards to at least above the top mentioned dead center position, so that then the door completely by hand can be opened.

In such emergency unlocking devices now has the problem revealed that the door is no longer open after an emergency release and opening Hand can be returned to the closed position, as the force effect the spring released a released spring of the spring-loaded cylinder a pushing back prevents the carrying guide in the starting position. It must therefore Special measures are taken to the door after an emergency release to close again. For this it is necessary, the spring-loaded cylinder to put pressure back on, so that his spring is stretched and a backward movement the carrying guide in the starting position of the closed door no Oppose more resistance.

The invention has for its object to provide an emergency release to design the features of the preamble of claim 1 protection, that with the most simple technical means the reclosing of the emergency unlocked Sliding door is made possible by hand.

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

The basic idea of the invention is the emergency maneuver with which the emergency release the sliding door is triggered simultaneously to use to create conditions under which the door is closed again by hand can be. The invention is based on the idea that the unpressurized state of the spring-loaded cylinder is maintained only so long must be until the door or the support guide beyond the dead center is pushed out, after which it can be opened at any time completely. This means that the emergency valve after its operation in the very short term in the Rest position can be traced back. The education is such that in the Rest position of the spring cylinder again ventilated and the spring in the tense position. The complete opening of the door already has been pushed beyond the dead center, this is not hindered, and it is possible at any time to re-close the door by hand, because the spring the Federkernspeichers is returned to the cocked position and pushing in the carrying guide is not hindered.

As a passenger, by pressing the emergency maneuver the emergency release device triggers this emergency whistle after its operation in general immediately Let go again, there is the simplest embodiment of the invention Solution to the problem therein, the actuator of the emergency manhole releasing under spring force in the rest position, so that so that the emergency valve itself gets back into the resting position. Of course it is It is also possible, a releasable coupling between actuator and Nothahn provide, so that if the passenger but the actuator holds longer, the emergency valve itself still under spring force in the rest position can be returned. It is also possible to provide a timer, the emergency manhole regardless of the position of the actuator returns to the rest position after a predetermined time.

In general, it is advantageous or even prescribed that both in the Vehicle as well as outside of the vehicle in the area of the sliding door pivot Emergency valve is arranged to allow the door from both inside and outside can be unlocked. Of course it makes sense, then both Nothähne-with to equip the device described above, the re-closing of the door made possible by hand. So that unintentional operation of the emergency valve during the ride is prevented, it is advantageous here a corresponding device for preventing inadvertent actuation of the emergency maneuver provided. This can be arranged, for example, at an inside of the vehicle Nothahn done by a magnetic device that the emergency manhole in the rest position releasably fixed. In an outside of the vehicle arranged Nothahn it may be advantageous to the emergency manhole by means of a key operable locking device lockable to make the parked Vehicle can not be opened via the outer emergency valve.

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

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

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 release device of Figure 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 is important for the description of the emergency unlocking device are.

In Fig. 1, the door is shown from the inside in the fully opened state. The Door leaves 1A and 1B are in not self-illustrated manner against each other in slidably suspended in each case on a support guide 3. she can from the fully open position shown in Fig. 1 in a successive be merged to directed sliding movement, and then they can together with the carrying guide 3 in the transverse direction to the door opening inwards a closed position are performed, in which the door leaves 1A and 1B within of the door frame 2 and thus lie within the vehicle wall. In reverse Direction, the support guide from a closed position in a Moving position to be moved outwards, in which the door leaves again outside lying in front of the vehicle wall and to fully open the door in her Longitudinally can be pushed apart. As a drive device used in the illustrated embodiment, an electric motor 4, from which the Door leaves 1A and 1B in a manner not shown, for example via a Toothed belt drive to be moved. From the reaction force of the drive device is known per se and described for example in EP 1 040 979 A2 Make the force for the displacement of the carrying guide to the outside or inside derived. In this case, the transmission of the reaction force depending on the location of the Electric motor 4 to the farther end of the support guide via a coupling rod respectively. The transmission of the reaction force to the support guide 3 takes place thereby, 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 in a position in or shortly after the dead center of its pivoting movement located to lock the support guide 3 in the closed position. In In this position, the door can not be closed by pressing the inside be opened.

Thus the door in an emergency of the passengers, for example, even in case of power failure can be opened, an emergency release device is provided. she has a spring-loaded cylinder connected to the compressed air system of the vehicle 5, which in the manner shown in FIG. 4 via a 3/2-way valve 8 is connected to the compressed air network 9. The 3/2-way valve 8 is as Nothahn formed, via an actuating element 8.1, for example as Actuating lever may be formed is actuated. The 3/2-way valve 8 has a rest position in which the spring-loaded cylinder 5 to the compressed air network 9 is connected and pressurized. In this state, As can be seen from FIGS. 3 and 4, the spring 5.1 is tensioned and, as below is explained in more detail, the emergency release device out of service. Will that be 3/2-way valve by means of the actuating element 8.1 in the position, which is shown in Fig. 5 and in which the spring-loaded cylinder 5 with the Outside space is connected, the spring-loaded cylinder 5 is vented, which the pressurization is eliminated and the spring 5.1, via the piston rod 5.2 of the spring-loaded cylinder 5 and a spring plate 5.3 with ventilated spring-loaded cylinder 5 was held in tension, relaxes and device in the position shown in Fig. 2.

The piston rod 5.2 of the spring-loaded cylinder 5 is via a support member 6.1 connected to a long hole tab 6, and the device not shown to move the carrying guide 3 has an opening pin 7, the in the long hole tab 6 is guided. The arrangement is such that outside the Emergency operation, ie with the spring 5.1 in the "door closed operating state", As shown in Fig. 4, the opening bolt 7 at the inner end of the slot the long hole tab 6 is located while in the "operating state door fully open" as shown in Fig. 3 at the outer end of the slot of the long hole tab. 6 lies.

When the emergency release is actuated, the movement of the piston rod 5.2 of the spring-loaded cylinder 5 under the action of the spring 5.1, as in Fig. 2nd shown under the keyword "emergency operation", the inner end of the slot of the Long hole tab 6 moved together with the opening pin 7. This sliding movement causes the carrying guide 3 at least over the dead position pushed outward and then the door completely opened by hand can be. However, this type of emergency release has the disadvantage that when spring cylinder 5 and spring 5.1 in the illustrated in Fig. 2 Position, the support guide 3 and thus the door is not in the hand Closed position can be moved back because of the position the long hole tab 6 of the opening pin 7 against the strong pressure of the spring 5.1 can not be moved back into the position shown in Fig. 4. Out 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 you release the actuator 8.1 returns under spring force in the rest position, in which the spring-loaded cylinder 5 is ventilated again from the compressed air system 9 forth and in the in Fig. 3 and 4 shown operating state returns. The spring is 5.1 again in the tensioned state, and now at any time the carrying guidance 3 returned by hand on the dead center position in the closed position be closed and thus the door.

Claims (8)

Emergency unlocking device on a sliding door for vehicles, in particular public transport vehicles, with at least one sliding in its longitudinal direction door leaf, which is suspended in a support guide and slidably guided, which together with the door panel from a closed position in which the door leaf is in the vehicle wall, in a shift position, in which the door leaf is located outside in front of the vehicle wall, and is displaceable back and with a drive device for the displacement of the door leaf, from the reaction force of the force for the displacement of the support guide is derived, the arrangement being such that the door is guided from the closed position into the displacement position and back on a dead center position, by which it is locked in the closed position, wherein the emergency unlocking device has a spring-loaded cylinder in the vent by means of a Nothahns the spoiled nnte spring released and the support guide is pressed under spring force at least beyond the dead center out to the outside, characterized in that the emergency valve (8) is provided with a device for automatic return from the operating position to the rest position, wherein in the rest position of the spring-loaded cylinder (5 ) is ventilated and the spring (5.1) is guided in the cocked position in which the support guide (3) by hand on the dead center position in the closed position is feasible. Emergency unlocking device according to claim 1, characterized in that the device for automatic return of the emergency valve (8) comprises a spring element which guides the emergency valve (8) when the actuating element (8.1) is released and / or expires for a predetermined period of time. Emergency unlocking device according to claim 2, characterized in that the emergency valve (8) is designed as a 3/2-way valve, via which the spring-loaded cylinder (5) to a compressed air source (9) can be connected, wherein the circuit is such that in the Rest position of the spring-loaded cylinder (5) to the compressed air source (9) is connected and vented while it is vented in the operating position and the 3/2-way valve when releasing an actuator (8.1) returns under spring force from the operating position to the rest position , Emergency release device according to one of claims 1 to 3, characterized in that the device for moving the carrying guide (3) from the closed position to the outside beyond the Totpunktstellung an opening bolt (7), in one with the piston rod (5.2) of the spring-loaded cylinder ( 5) is guided, wherein the arrangement is such that when the spring (5.1) of the opening bolt (7) in the closed position at the inner end of the slot and in the open position at the outer end of the slot and when actuated Emergency release by the movement of the piston rod (5.2) under the action of the spring (5.1), the inner end of the oblong hole of the long hole tab (6) with the opening bolt (7) is moved. Emergency unlocking device according to one of claims 1 to 4, characterized in that both in the vehicle and on the outside of the vehicle in the region of the sliding door sliding an emergency valve is arranged. Emergency release device according to claim 5, characterized by a device for preventing inadvertent operation of the emergency maneuver. Emergency unlocking device according to claim 6, characterized in that in particular the emergency cock arranged in the vehicle is releasably fixed by a magnetic device in the rest position. Emergency unlocking device according to claim 6, characterized in that in particular the emergency tooth arranged on the outside of the vehicle can be locked by a locking device which can be actuated by means of a key.

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