Outer door of a carriage for the track bound public transport and procedure for opening and closing the same.

(42) Date of commencement of the patent: 15. 4.1997 (45) Date of issue: 25.11.1997 (56) Documentation:

G8 2012845A FR 2264958A1 US 4761917A US 4805347A US 4924629A (73)

VIENNA FCTALLWERK GESHBH

A-2100 KDRNEUBURG / LEOBEMXBF, LOWER AUSTRIA (AT).

(54) OUTER DOORS, IN PARTICULAR TRANSITIONS ON THE HEADBOARD, A WAGGON FOR THE

RAIL-CONNECTED PASSENGER TRAFFIC AND METHOD FOR OPENING AND CLOSING THE SAME (57) External door, especially transitional door on the front wall, a wagon for rail passenger transport, the outer door being at least one, in particular two door leaves (1) and optionally an opening / closing device, for example, a cylinder-piston unit, and is preferably designed as a sliding door, which in their closed position by a fixed in the door frame, Door portal od. like. arranged volume and / or shape variable, a cavity (7) having seal (6) with rubber-elastic material which by means of a pressurized medium, for example compressed air, to the door leaf (1) can be applied, wherein the cavity (7) via at least a, in particular electrically operable. Outlet organ (V₂) is relieved in the closed position of the outer door, wherein immediately before the opening of the outer door, the outlet member (V₂) and with the initiation of the closing operation, the inlet member (V,) opens.

AT 403 148 sweerasiß

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The invention relates to an external door, in particular transitional door on the front wall, a wagon for rail-bound passenger, the outer door at least one, in particular two door leaves and optionally an opening / closing device, for example a cylinder-KolbenAggregat, and preferably designed as a sliding door is, which in their closed position od in a fixed door frame door portal. like. arranged volums- and / or variable shape, having a cavity seal made of rubber-elastic material, which by means of a pressurized medium, for example compressed air, can be applied to the door leaf, wherein the cavity via at least one, in particular electrically actuated, exhaust member in the closed position of the outer door relieved is, as well as subject to a method of opening and closing the same, slight deformation.

From US patents US 4,761,917 A, US 4,805,347 A and US 4,924,629 A swing doors are known on motor vehicles. These swing doors have a deployable seal, wherein when closing the door, a cavity of the seal is set under depression, so that a folding of the seal occurs. Closing the door is thereby realized with particularly low power.

From the British patent GB 2,012,845 A a sliding door with seals is known, as it is particularly suitable for automobiles. There are hiebei two doors provided, the movement is mechanically coupled together. The inflatable seals are acted upon by a pressure source, the compressed air lines each have a throttle point and a valve. These separate pneumatic circuits ensure that when pressure relief of a seal, as could occur through a leak in the lines or in the seal, the other seal remains under pressure and provides resistance to an opening movement due to friction corresponding resistance.

French Rail Specification 2,264,958 A1 describes a railroad car with sliding sliding doors. The object of this construction is to raise the edge of the lower door before opening it, so that the door can be opened even when the platform is located higher in a station than the lower edge of the door. This variable underlay can be achieved either by mechanical means or by pneumatic means, for example by an inflatable door extension. In order to allow the opening movement of the door at all, if a Perron limits the opening movement, it is imperative that a raising of the lower edge of the door before opening the same, otherwise the movement is limited by the edge of the Perrons.

Another type of doorway doorway is those located at the front of a wagon to allow people to pass from one wagon to the other. Preference is given to double sliding doors, since the space required in the space used by people is relatively small and at the same time the opening and closing can be realized via simple compressed air cylinder-piston units. In the first car of a train, the door facing the locomotive and, at the last wagon, the door at the end have the highest compressive stresses. These doors are on the one hand mechanically closed and on the other hand they are sealed in this closed state by a seal. This seal has a cavity which is acted upon by compressed air, wherein the admission via a manually operated valve, for example in a known manner with a square to complicate unauthorized handling, can be done. In the non-pressurized state, these seals cause a seal, but this is not sufficient, for example, to take into account the high Zugluftbeanspruchung, as it may be caused in the transition of a high-speed train from one car to another wagon. Such a transition has a high number of interconnected parts which, in order to keep the passage and the subsequent wagon part draft-free, must have an extreme seal, paying particular attention to the cleanliness of the sealing surfaces and avoiding nicks on the same when coupling the wagons is.

The present invention has set itself the goal of creating an outer door that can be opened and closed without much effort if necessary, being to be ensured in the closed state a perfect tightness against the car, in particular as a pressure-tight passage door at the end faces of Waggons can be used at crossings.

This object is achieved according to the invention in an outer door of the type mentioned in that immediately before opening the outer door, the outlet member and opens an inlet member with the initiation of the closing operation. By in the door frame u. a. Fixed parts that cooperate with the door in the closed position, a seal between the door and car can be achieved. The seal consists of a hollow profile, which can be pressed by a pressurized medium against the door leaf. With one-piece design of the seal, it can be connected to the door leaf in a particularly easy manner, both in the floor area, on the two sides and in the ceiling area. If two sliding doors are provided, they can be pressure tight against suitable interlocking profiles2

AT 403 148 Β be sealed each other in closed position. Opens immediately before opening the outer door, the outlet member, a pressure-tight closure of the car is guaranteed in the entire standby position to open the door, with a fast closing of the outer door is then given when the inlet member opens with the initiation of the closing process. Such a surprisingly simple construction does not require the additional arrangement of a seal, but it can the seal, as it is used for stationary Druckertüchtigung, so in permanently sealed door use.

Closes the exhaust member at the initiation of the closing process, it is ensured that the seal is completely depressurized, whereby a grinding od. Like. The seal can be avoided during the closing process.

Closes the inlet member with the outer door closed, so a particularly rapid opening and closing of the door can take place in immediate succession, as is particularly desirable, for example, when boarding the train in the station area and subsequent deployment of people.

Is a handle for operating the / of the door leaf / door leaves and an electrical switch provided, it is a forced control of the pressure relief or pressurization of the seal, the inertia of the pressure relief can be so low that the mechanical pulse to open or close the Door no frictions between door and seal conditional.

If a photocell accessible to persons is provided which actuates the electrical switch, a simple and proven control is provided with which the opening and closing movement of the door can also be controlled. The controller is usually equipped with an integrator to allow only from a certain pulse height to open and to prevent unwanted opening or closing of the doors.

Protrudes in the opening path of the door leaf / door leaves an operating element of an electrical switch, which covers the closing movement, in particular 5% to 25% of the closing path, opens the inlet member, so a particularly good match between closing movement and pressurization of the seal is guaranteed ,

If a line adjoining the outlet element has a larger cross-sectional area, in particular at least twice the cross-sectional area, than a line leading to the inlet element, then the times for opening the door can be adjusted particularly simply with those for closing the door, so that only short overall times are required become.

Is seen in the flow direction of the gaseous medium under pressure, disposed after the outlet organ a muffler, so a particularly quiet opening of the door can be ensured without causing a significant time delay, as would be caused for example by long gas lines.

If the seal has at least two outlets, in particular valves, then a particularly rapid and uniform pressure relief of the seal can be achieved. The same effect can be achieved for the pressure load, if the seal has at least two inlet members, in particular valves.

If at least one respective inlet and / or outlet member is provided in the substantially vertically disposed parts of the gasket, a particularly rapid release and loading of the pressurized medium can be achieved in those areas which are particularly susceptible to drafts and other penetrating Media are.

If an outlet and / or inlet member formed by a three-way valve, it is sufficient only one connection in the cavity of the seal for one inlet and one outlet.

If the inlet and / or outlet member, in particular the three-way valve, connected directly to the cavity of the seal, so very short flow paths are ensured, which allows to keep the inertia of the entire system particularly low.

A particularly simple constructive solution is when in a gaseous medium under pressure a cylinder-piston unit with, in particular double-acting, piston for opening and closing the outer door simultaneously with the inlet member into the cavity of the seal for the pressurized medium is operable. On the one hand, such a device can be controlled by virtue of the fact that the piston, as such, has a certain inertia due to its mass, wherein, moreover, a temporal control during actuation is also possible by the length of the lines.

If inductive sensors are provided for the control of the outlet and / or inlet member and / or cylinder-piston unit, then a particularly interference-free control can be realized, which can use conventional electrically actuated valves.

The method according to the invention for opening and closing an outer door in which, when the outer door is closed, the door leaf / door leaves are / are acted upon by the action of a pressurized medium in the cavity of a seal, and the outer door is opened

AT 403 148 B, the cavity is relieved of the pressurized medium, wherein the loading and unloading of the cavity via, in particular electrical, signals and / or pulses takes place, consists essentially in that after the signal and / or pulse to open the Outlet member is given a signal and / or pulse to the opening ZSchließvorrichtung to open the outer door. By such a method, a manual control for the seal is no longer necessary, and it was quite surprising that the opening and closing times are so low by the pressure and pressure relief that the normal transit traffic from one car to another is not subject to any time delay ,

If after the signal and / or pulse to close the outer door, a signal issued to open the inlet member for the pressurized medium in the cavity, so a procedure is given, in particular at short successive opening and closing operations of the door, as in a high frequency of passing people occurs, ensures a particularly rapid opening of the outer door.

Furthermore, the pressurized medium can be sucked out of the cavity to achieve an even faster opening.

In the following the invention will be explained in more detail with reference to the drawings.

Show it:

1 a sliding door in the front wall of a wagon,

2 shows a section through the door frame and a part of the door,

Fig. 3 is a block diagram of the pneumatic control and Fig. 4 associated with Fig. 3 electrical circuit.

The in Fig. 1 illustrated outer door, a transitional door on the front wall of a railroad car for passenger transport, has two door leaves 1, which are opened either via the handles 2 or the photocell 3, which is located above the door leaves 1. The opening and closing is carried out by a double-acting pneumatic cylinder-piston unit, wherein the respective reversal takes place by electrical impulses, which cause an opening and closing of the valves. If the sliding door is opened to 90%, then the inductively actuated switch 4 is acted upon, which then closes a relay, via which the compressed air supply to the cylinder-piston unit is interrupted.

As particularly clear the Fig. 1 and 2, a seal 6 is arranged in a circumferential groove 5 in the fixed door frame, which has a cavity 7 in which on the spout 8, a pressurized medium, for. B. Compressed air, can be initiated. By this compressed air, the seal 6 is deployed, so inflated and pressed against the door panel 1. As a material for the seal 6 are rubber-elastic materials such as rubber, polyurethane u. Like., Suitable. As shown in FIG. 1 it can be seen, the seal 6 at the two side regions and transverse and top in the ceiling area as well as down in the bottom area arranged circumferentially. The seal 6 is an endless seal and has in each case in the two side regions a in FIG. 1 not shown inlet and outlet member Vi, V2, A on.

In the in Fig. 3 Block diagram shown, the compressed air from the reservoir R enters the pressure reducer M and is reduced there to 0.8 bar overpressure. The compressed air can then pass through the manually openable and closable outlet A in the seal D. The outlet A is used for continuous pressure loading of the door leaves 1, if they are not to be opened, ie in the first or in the last wagon, where no transfer to another wagon is required. The sealing of the door leaves 1 to each other by interlocking elastically deformable seals, so that a complete tightness of the Türbiätter is ensured in the closed state. From the pressure reducer M branches off a line to the multi-way valve, a three-way valve Vi and another line to the multi-way valve, a three-way valve V2. Depending on the switching position, either the compressed air supply to the cylinder-piston unit 0 for the opening and closing of the sliding door can either be completely interrupted by the three-way valve Vi, as is desired in the open position of the door leaves 1, or on opening the door one side of the piston be acted upon and command the door closing the other side of the piston are acted upon, so that in each case an open or Closing movement of the door leaves 1 is realized. The three-way valve V₂ connects the cavity 7 of the seal D either with the pressure reducer M or with the silencer S. The seal 6 can then also be connected via a separate line with the suction B, wherein the suction B can also be done via the silencer S. Thus, depending on the position of the door leaves, either the seal 6 is subjected to compressed air or relieved of pressure by the three-way valve V2. Optionally, a suction of the compressed air from the cavity 7 of the seal 6, for example, with a negative pressure of 0.3 bar.

As shown in Fig. 4, the switch S1, which may be arranged, for example, in the handle 2 of the Türbiätter 1, or a photoelectric switch two switch positions Xi and X2. In

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Position Xi is the three-way valve V₂ open, so that the compressed air can escape from the cavity 7 of the seal D. At the same time the three-way valve Vi is operated so that the cylinder-piston unit 0 is acted upon by compressed air to open the door leaves 1. About the switch S₂ can also be an additional control of the three-way valve Vi at switch position Xi of the switch Si can be achieved. In switch position X₂ of the switch Si, the three-way valve Vi is brought into that switching position that the compressed air causes the closing movement of the cylinder, whereas the three-way valve V₂ the connection of the seal 6 between the muffler S and the suction B interrupts and the compressed air from the pressure reducer M in the cavity 7 of the seal D passes. The supply line for the compressed air has a diameter of 4 mm, whereas the discharge for the compressed air has a diameter of 8 mm. For a quick outflow of air from the cavity 7 of the seal 6 is possible. In order to coordinate the pressure load or To allow relief of the seal and the opening and closing of the door leaves 1 and thus to minimize the opening and closing times, the procedure when opening the sliding door as follows.

First, the cavity 7 of the seal 6 is pressure-relieved, after which only the movement of the cylinder-piston unit 0 takes place. Since the piston in the cylinder must have a relatively large mass, and further the Türbiätter 1 also have a large mass, is sufficient alone the delay due to the inertia of the masses that occurs with a suitable choice of the seal no friction due to still pressurized seal.

When closing the outer door is now proceeded so that first the cylinder-piston unit 0 is acted upon for closing with compressed air, after which, for example, in the position 90% open, a switch S.₂ is actuated, so that then the compressed air enters the cavity of the seal.

Instead of sliding doors swing doors or sliding doors can be used. In any case, such external doors are ideally suited to make the transition from one car to another with closed doors pressure-tight, so that no major design effort must be operated to ensure the pressure tightness of the transition as such.