HU196926B - Actuating device for push doors of vehicles - Google Patents

Abstract

What is described is an actuating device for vehicle sliding doors, especially for intermediate doors of railway carriages, with at least one door wing (1) which is loaded in the closing direction by a tensioned rope (8). A rope (4) rotating via two deflecting rollers (2, 3) is connected firmly to the door wing (1), and one deflecting roller (3) is provided with a brake actuable electrically in dependence on the position of the door wing (1). <IMAGE>

Description

BACKGROUND OF THE INVENTION The present invention relates to an actuator for sliding doors of vehicles, in particular intermediate doors of railway wagons having at least one door number, wherein the door number is loaded by a rope which is tensioned in the closing direction.

The disadvantage of the known intermediate doors of railway wagons is that the door wagon is permanently exposed to a structure that loads in the closing direction. For this reason, the passenger who opens the door must, for example, use his foot to prevent the door from locking while passing through the doorway with his luggage in his hand. In the case of hydraulically actuated structures, it is already known to delay the onset of movement of the door in the closing direction, which is usually sufficient to pass through the door opening. Such solutions are described in DE 3225559 and DE 3301808. descriptions. However, such structures are relatively complex and costly.

SUMMARY OF THE INVENTION The object of the present invention is to overcome the disadvantages of the prior art and to provide a simpler actuator that provides convenient passage through doors of the type described in the introduction.

The object of the present invention is solved by providing a rope which is guided through the door leaf by a rope which is guided through two turning discs, one of which can be actuated electrically depending on the position of the door leaf and automatically released after a certain time.

Essentially, with such a structure, it would be possible to provide the unbraked turning disc with a coil spring to provide tension on the rope load on the door leaf. Such a spring rope should, however, be of relatively large diameter to provide the intended opening of the door leaf. Therefore, a simpler solution is to have the rope loading the door leaf through a spring loaded disc which is additionally mounted above the turning discs. This measure enables the replacement of spring-loaded rope discs without the need for substantial intervention in the entire system. Such a change is necessary, for example, if the opening motion is to be assisted by a pneumatic device, and accordingly the restoring force must be increased, for example, from 25 to 45 N.

If a passenger opens the intermediate door only partially and the next passenger needs a wider opening width, the latter cannot be forced to wait for the electric brake to release again. Accordingly, it is desirable that the reversible rotating disc is provided with a freewheel so that the brake acts only in the closing direction of the door leaf.

The brake may in principle be actuated by a limit switch which is impeded by a fully or partially opened door. However, it is more advantageous to continuously display the position of the door by means of a potentiometer, all the more since it can also be determined whether the door leaf is at all moving, either in the closing or in the opening direction. In particular, it is advantageous to take into account the position of the potentiometer for the unbraked rotary dial, since this does not allow for a sudden shift towards the wrap around rope as for the braked rotary dial.

Continuous sensing of the position of the door, for example by means of a potentiometer, allows, in principle, to leave the intended freewheel if, on the one hand, the device is so designed that the brake is actuated only when the door is open at least the engaged brake can be released by loading or moving the door leaf in the opening direction.

The built-in brake according to the invention can be used not only to keep the door open, but also to prevent the door from being pulled too suddenly during closing movement, even when repeatedly applied.

The invention will be described in more detail in connection with an exemplary embodiment, based on the accompanying drawing.

In the drawing, Fig. 1 is a front view of an actuator according to the invention, Fig. 2 is a top view of the actuator of Fig. 1, Fig. 3 is a view of the actuator of Fig. 1, arrow 4; Figure 5 is a sectional view taken along line BB of Figure 1, Figure 6 is a view of the actuator of Figure 1 in the direction of arrow C, and Figure 7 illustrates the control of the brake from the voltage determined on the potentiometer, and depending on the voltage change.

In the actuator according to the invention shown in Figures 1 and 2, the door leaf 1 is secured in a ball conduit 10 by means of support portions 16 and 16 ', which allow it to be moved along a support rail 20. The door leaf 1 is continuously under the influence of a spring rope disc 11 which is loaded with a force of about 25 N in the closing direction. The spring rope disc 11 is supported by a bearing cover 13. Said rope 8 is connected, as shown in FIG. 4, to the support portion 16 secured thereto via the rope fastener 15.

The desired movement of the door leaf 1, which is opened manually or optionally by pneumatic assistance, is provided by a control device 9 which allows the movement of the door leaf 1 to be braked if the rope 4 passing through the turning discs 2 and 3 is stopped. Namely, this rope 4 is connected to the door number 1 at the positions 12 and 12 ', so that the braking of the turning disc 3 leads to the stopping of the door number 1. As shown in Fig. 6, braking is performed in a manner known per se by locking the freewheel 6 on which the pivoting disk 3 is mounted, which is preferably a pot magnet. The pivoting disc 3 can be rotated only in the opening direction of the nozzle 1 relative to the freewheel 6.

Information on the position of the door leaf 1 is received from the control device 9 via a potentiometer 7, the arrangement of which is shown in FIGS.

It stands out from 196,926. The potency elements 7 have a fixed portion which is mounted on a bracket 17 and is rotatable by means of an axis 19 which can be connected to the pivoting disk 2 by means of a driving pin 14 in a manner that ensures movement. The cover is protected by 18 covers from unauthorized interference.

Figure 7 illustrates the mode of operation of the actuator described below as follows: ₁ θ

The voltage U applied on the potentiometer 7 is proportional to the extent of the door opening, which is a total of 590 mm. The condition of the brake switch on the one hand, it requires that the voltage exceed a minimum value of a _Ü, representing ₁₅ opening the door about halfway. In addition, the brake applies only when the door is at rest; that is, when the time derivative of the voltage U 'has dropped to zero. This second measure is not necessarily necessary, but it prevents unnecessary operation of the free running 6. At the same time, the voltage is above the minimum value, that is, the door leaf 1 is properly opened and the door leaf is at rest, the brake is applied. This state is maintained by a timer, for example, ^ 5 for 10 seconds.

The door leaf 1 then moves under the action of a spring-loaded rope pulley to its closed position while the tension is reduced. The existence of a negative voltage change can be chosen as a condition for βθ to apply the brake repeatedly, as shown in the third movement of Figure 7.

Claims

Claims (7)

An actuating device for sliding doors of vehicles, in particular intermediate doors having at least one door leaf for railway wagons, wherein the door leaf is loaded with a rope 40 tensioned in a closing direction, characterized in that it is wound through two turning discs (2, 3) rigidly coupled, wherein one of the rotating discs (3) is electrically actuated depending on the position of the door leaf (1) and is provided with an automatically released brake (5) after a certain time. Actuator according to Claim 1, characterized in that the rope (8) which closes the door leaf (1) is guided through a spring-loaded rope disc (1), which is additionally mounted above the turning discs (2, 3). Actuator according to Claim 1 or 2, characterized in that the reversible disc (3) is provided with a freewheel (6) allowing the brake (5) to operate only in the locking portion of the door leaf (1). i. 1-3. An actuator according to any one of claims 1 to 3, characterized in that the brake (5) is designed as an anchor magnet which pulls the brake rotating disc (3) or a part connected therewith at least in a locking direction. 5. An actuator according to any one of claims 1 to 5, characterized in that a potentiometer (7) is preferably connected to the unbraked rotary dial (2) to indicate movement or position change of the door wing (1). 6. Actuator according to one of Claims 1 to 3, characterized in that the brake (5) can be actuated only at a given minimum opening of the door leaf (1). 7. An actuator according to any one of claims 1 to 3, characterized in that there is a release brake (5) when the door leaf (1) is open when moved in the open direction. 8. Figures 1-7. Actuator according to one of Claims 1 to 3, characterized in that the door (1) has a brake (5) which can be repeatedly actuated repeatedly during the closing movement of the door (1). 9. Figures 1-8. An actuator according to any one of claims 1 to 4, characterized in that, in the case of a double-leaf door, one door leaf is attached to the upper leg and the other door leaf to the lower leg.