EP1183435B1 - Control of the movement of a sliding or swinging and sliding door in its end closing area - Google Patents

Description

The invention relates to the control of the movement of a sliding or sliding door of a vehicle in its Schließendbereich in which by a freewheel, a ratchet or the like, the movement of the door leaf in the closing direction is always possible, the movement in the opening direction but only if a brake, Clutch or other fixation for the door leaffemen part of the freewheel is released and in which a device for determining the door position is present. Such a door is known, for example, from EP 0 673 464 A, corresponding to AT 401 082 B. The content of these references is incorporated by reference into this specification.

In automatic doors of all kinds, which are operated remotely or by an automatic timer or the like, measures are provided to prevent persons or objects from being caught by the closing door and so injured or damaged, or that it comes to so jammed People or objects also remain trapped during the journey of the train.

In many cases, in order to detect such pinching, sensors are used in the sealing area of the main closing edge of the door. The main closing edge is that vertical edge of the door which is located at the front during the closing movement of the door leaf. The vertical edge located at the rear during the closing movement of the door is called secondary closing edge. In the case of double-leaf doors, the main closing edges of the symmetrically arranged wings abut one another in the closed state of the door, while the secondary closing edges abut the door frame.

In the area of the seals at these main closing edges, often in the interior of the hollow seals, corresponding sensors are arranged, which detect when the seal encounters an obstacle before reaching the Schließendlage and so the possibility or risk of trapping a person or an object given is. Known strategies for operating the closing mechanisms of such doors are either to reverse the drive direction and to make a new closing attempt after a predetermined time or to interrupt the closing operation for a predetermined time in order to allow the passengers, who until then only slightly jammed ( if ever pinched) items to remove and then with continue the closing process. All these and other strategies have various advantages and disadvantages such as the time, the control and the energy consumption and in many cases in addition to this control still need components and fittings in the door area, especially the cost in their maintenance expensive sensors.

There are, of course, other methods and devices of anti-trap protection, but since they are all not on the problems mentioned below, they will not be discussed here.

In many cases, there is now an entrapment of an arm, a leg, a bag, a dog in the last part of the closing movement, in the so-called closing end area. If the entire security process is carried out, thus the door is reopened and then the closing process is repeated, it comes to completely unnecessary delays, which also invite the public to open other doors to enter, which prolongs the delay in the handling.

The size of the mentioned closing end area can now be determined by the respective operator of the train or legally country by country and is in most cases about 150 mm, measured at the Hauptschließkante and starting from their Schließendlage or between the main closing edges in double-leaf doors. In the following, the term closing end area is used both in connection with the door leaf and in connection with various parts of the door leaf or the door drive. Since each of these parts has to be assigned a unique position when the door leaf (more particularly its main closing edge) reaches the closing end area, this formulation is clear and unambiguous.

It is the object of the invention for a door of the type specified anti-pinch especially for the closing end of the door, in which it is no longer about to release people as a whole, but about luggage or dogs od.dergl. not to separate from the associated person to create, which is operated only on the door control itself, provides maximum security and to dispense with additional components in the door area and so on the always necessary for such components maintenance and inspection.

According to the invention, it is provided that any existing conventional measures for anti-trap in the predetermined closing end be disabled that, as long as the door leaf is in the closing end, the energization of the door drive and thus the closing force acting on the door leaf (the door leaves) is reduced so that a stop and opening of the door leaf (the door leaves) for normal users despite this energization is possible, and that the brake, clutch od.dergl., which acts on the Türblattfemen part of the freewheel, is ventilated.

This ensures that in the closing end no time-consuming measures, as they were usual, done, but that only the passenger is offered the opportunity to push the door so far that he can bring bags, umbrellas, etc. through the pressed gap. With the cessation of the opening force of the closing operation is continued immediately.

It is provided according to the invention that the manual pressing of the door during the interrupted closing operation only over the predetermined Schließendbereich is possible, and that when the monitoring device for the door position has determined that this predetermined range was left, the brake, clutch or the like come again is left, so that a further opening is not possible. In this way, while it can be achieved that jammed objects can be freed, but it prevents the doors from becoming a playground for adolescents or irresponsible persons.

In one embodiment of the invention is further provided, after a predetermined time, the brake, clutch or the like in any case (in normal closing, it falls when reaching the final position or when locking a) to be able to maintain the operation in any case. Since the train driver at the departure of the train, the doors at least substantially overlooks, thereby no security problems can occur.

In a variant it can be provided that the brake, clutch or the like is incident upon reaching a predetermined speed of the train.

In yet another variant, it can be provided that when the station leaves the station by a signal, the collapse of the brake, clutch or the like is effected. Through these embodiments, an operation is also possible if it does not come to complete closing of the door leaf because of the closing force in the closing force or because of the wanton clamping of beverage cans - a popular in some young people activity, although this, as described in more detail below , is well aimed.

The force with which the door leaf is acted upon in the closing end, on the one hand must be so great that even with dirty leadership and solidified or missing lubricant (winter operation, dry run) closing is reliably possible, but on the other hand also of children or frail persons the door leaf stopped and can be opened against the forces acting in the closing end closing force. Usually closing forces in the range of 50 to 150 N, preferably of about 75 N are suitable.

The invention can be variously designed and adapted to the conditions of use. Thus, the closing end area in which the brake, clutch, or the like is vented may be larger than the area where the closing force is reduced. This ensures that in an emergency by a great effort the door will be opened further than by a normal force.

• Die Fig. 1 zeigt eine erfindungsgemäß ausgerüstete Türe im geschlossenen Zustand,
• die Fig. 2 zeigt die Türe der Fig. 1 mit den Türblättern im Schließendbereich und
• die Fig. 3 zeigt einige Betriebszustände innerhalb bzw. außerhalb des Schließendbereiches.

The invention will be explained in more detail below with reference to the drawing purely schematically:

• 1 shows a door according to the invention equipped in the closed state,
• Fig. 2 shows the door of Fig. 1 with the door leaves in the closing end and
• FIG. 3 shows some operating states within or outside the closing end region.

Fig. 1 shows, purely schematically a door 1 with two door leaves 2. These are moved by a door drive 4 between its closed and its open position. The actual guides are not shown for reasons of clarity. The door drive 4 consists essentially of a motor 5, which sets a spindle 10 in rotation, with integrated position sensor, which determines the position of the door leaves 2 by monitoring the rotational movement of the spindle. Each door leaf 2 is fixedly connected by means of an arm with a screwed onto a spindle nut 10 6, so that upon rotation of the spindle 10 each door leaf 2 is moved accordingly.

The spindle 10 carries at its end facing away from the motor 5 a freewheel 8, which cooperates with the spindle so that it always allows a rotational movement in the direction corresponding to the closing direction of the door leaves. The rotational movement in the opposite direction but blocked by him. To open the door now, it is provided that the spindle-distal part of the freewheel 8 is not fixedly secured to the car body 11, but is connected to a clutch 9 or a brake or a similar releasable mechanism. This achieves that when releasing the clutch 9 of the spindle distant part of the Freewheel 8 can move in the opening direction and the opening of the door 1 allows.

In Fig. 1, the closed position of the door is now shown, the limit switch 7 has this situation "recognized" and the door drive is de-energized and the door or the door leaves 2 locked. A possibly applied force 3 in the opening direction can not press the door.

Fig. 2 shows the door 1 at the edge of the closing end. Depending on the applicable standard or applicable law, the width x is different in size, in most cases it is 150 mm. When closing the door outside the Schließendbereiches each door leaf is acted upon by a closing force FO, which ensures a speedy closing. According to the invention, however, in the closing end region during normal closing of the door 1, the door closing force is lowered to a predetermined value FS (shown schematically in the area of the nut 6), which is chosen so that on the one hand full closure even under adverse conditions (cold, dry running, dirty Guides), on the other hand reliably prevents injury to persons or animals. At the same time, the clutch 9 is released in this area, so that users of the door can press them against the reduced closing force FS (if the applied force 3 is greater than the closing force FS), since a reversal of the direction of rotation of the spindle is made possible.

This procedure is also apparent from Fig. 3, which shows schematically the course of the closing force on the closing movement in response to the respective position of the door leaf: As long as the closing end x is not reached, the closing force is FO on the door leaf, with the achievement of the Schließendbereiches the closing force is lowered to the predetermined, low value FS. At the same time, the hitherto sunken (dashed area) brake is released (dotted area) and thus the freewheel can also be moved in the otherwise locked direction of rotation.

The position sensor in the motor 5 detects the reaching or leaving the Schließendbereiches and can in the latter case the clutch 9 again to prevent "playing" with the door.

The opening of the door is done as usual in these systems, the brake od.dergl. is ventilated and the door drive is at the predetermined, mostly full power.

As can be seen from the above, there are many ways to realize the invention technically. Thus, for example, the position sensor can be provided separately from the engine and also equal to the limit switch 7 and fulfill its task and fulfill, it can also act in two-leaf doors, the spindle only on one wing and the other wing by means of a rotating belt od.dergl. be driven, it is possible to provide the freewheel and the clutch motor side, although this is useful only in exceptional cases, because of the complex storage of the engine, and much more.

It is essential that in the closing end region x of the door 1, or the door leaf 2, whose closing force is reduced from FO to FS, that their opening lock is canceled and that, if present, x other anti-pinch mechanisms are deactivated in the closing end.

Claims (7)

1. A control device for the movement of a sliding or swinging door (1) in the end closing range (x) of a door leaf (2), in which, by means of a freewheel mechanism (8) or the like, the movement of the door leaf (2) is always possible in closing direction but the movement in opening direction only when a brake, coupling (9) or other fixing for the part of the freewheel mechanism remote from the door leaf is released, and in which a device is provided for determining the door position, characterised in that conventional means which may be provided for jamming protection in the predetermined end closing range (x) are deactivated so that, as long as the door leaf (2) is situated in the end closing range (x), the current supply to the door drive (5) and thus the closing force (F), which acts on the door leaf (2), is reduced to a lower value (FS), and in that the brake, coupling (9) or the like, which acts on the part of the freewheel mechanism (8) remote from the door leaf, is released.
2. A control device according to Claim 1, characterised in that the brake, coupling (9) or the like drops after a predetermined time interval has elapsed.
3. A control device according to Claim 1, characterised in that the brake, coupling (9) or the like drops when the train reaches a predetermined speed.
4. A control device according Claim 1, characterised in that the brake, coupling (9) or the like is actuated upon leaving the station by a signal generator mounted on the platform.
5. A control device according to any one of preceding Claims, characterised in that the end closing range (x) is approximately 150 mm.
6. A control device according to any one of preceding Claims, characterised in that the closing force (FS) on the door leaf (2) in the end closing range (x) is 50 N to 150 N, preferably approximately 75 N.
7. A control device according to any one of preceding Claims, characterised in that the end closing range (x) is approximately 150 mm.

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