CZ259595A3 - Electric or pneumatic drive of a door - Google Patents

Abstract

The door operating drive has a self-locking device (12,13) for holding the door in the fully closed position, with a manual operating device (15) on the drive side of the self-locking device, allowing the door to be brought into the fully closed position when the door operating drive is defective. Pref. the self-locking mechanism uses a dead-point mechanism or a knee-lever mechanism, with the manual operation device provided by a claw pivoted about an axis (16) for engaging the element (12) of the self-locking mechanism on the drive side.

Description

(57) The door drive is designed in particular for vehicle doors and is self-locking in the end closing position of the door. A manually operable device (15) is provided in the door drive branch on the self-locking drive side. the component (12) and hence the door can be brought to a position corresponding to the end closing position of the door.

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Electric or pneumatic door operator

9 £ Computer technology

BACKGROUND OF THE INVENTION The invention relates to an electric or pneumatic door drive, in particular for a vehicle door, which is formed in the end closing position of the door and self-locking.

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Current_stay_technics

Such drives are used very frequently and are formed in the region of the end closing position of the door in a self-locking manner, since after closing the door the electric drive is switched off or the pneumatic cylinder is not maintained or would not in itself be sufficient to prevent forcible opening of the door. The self-locking device, which may be designed as a dead-end mechanism or as a dead-end overlapping mechanism, for example a knuckle, prevents the door from being opened by shocks and / or manipulation with the door leaf.

This achieves that after the door has been moved to the closed end position, the door can only be opened by means of a drive or a specially adapted emergency control. The self-locking mechanism is designed so that even relatively large forces acting on the door do not open them.

Problems with this type of drive are created when the drive fails. In such a case, the door is usually opened by actuating the emergency door mechanism, and due to a malfunctioning drive it is not possible to close properly. Manual closing of the door is possible until the self-locking area is reached, because in this area the forces acting on the door are no longer transmitted to the drive. This results in the door being able to be reopened at any time by moving the vehicle or by a non-professional or arbitrary user, which is unacceptable for safety reasons.

Therefore, the door must be provided with an additional lock capable of reliably fixing the door in a closed area that corresponds to the transition to the self-locking area of the drive.

Usually, hooks or snap locks or the like are used.

However, a further problem arises in this respect, in those cases where the proper closing of the door is automatically checked and communicated to the train manager or other authorized person. Since the door is no longer in the closed end position, the control device detects that the door is not closed and does not provide a movement signal, so that the bridging of the control device is provided for each door.

Therefore, in the case of a prior art door, it is necessary to manually close the door in the event of a failure, lock, bypass or short-circuit the closed door control in this position, disconnect the failed drive for safety reasons and finally mark the door as out of service.

Although all this has taken place, the situation is still not satisfactory because, in the event of danger or accident, the closed doors cannot be opened by emergency operation. This can endanger passengers.

The state of the art in this context can be mentioned

AT-FS 391 912 of the same applicant. This document relates to an emergency control device for a door of the type in which a slider acting in the direction of opening of the door is provided for ease of emergency operation, the slider being held by a holding device which is manually released! No. Thus, this document addresses the problem of opening a door of a given type in an emergency, but not their subsequent closure upon failure of the drive.

DE-A 36 39 177, which relates to pneumatically or hydraulically operated door controls, is also mentioned in the prior art. Among other things, it is assumed that in the event of an emergency during the movement of the door, for example by gripping a person or object, the door is released. From this it is clear that this file also does not concern the failure of the door drive.

DE-A 43 11 287 discloses a safety release for overhead swinging door leaves in which, in the event of a power failure, the drive can only be disconnected from the door leaves in predetermined door leaf positions in order to prevent the door leaf from falling. The problems underlying the invention are not affected.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the drawbacks described and to provide a device which makes it possible in a simple and economically advantageous manner to reliably close a broken door and lock it for normal operation without preventing the door from opening in an emergency.

According to the invention, this object is achieved by providing a manually operable emergency closing device in the door drive branch, by means of which, in the event of a door drive failure, the drive can be moved to at least overcome the self-locking area.

This manually operable emergency closing device can be designed, for example, as a lever or a handle, taking into account that the actuator must only be moved by short paths since the door can be closed up to the closing end position by moving the door.

By means of the device according to the invention, the cost of a malfunctioning door operator is reduced to allow the person to close the door up to the self-locking region of the operator, then to final insert into the closing end position via the emergency closing device. marks the door as broken.

Thus, any handling of the closing check is eliminated, since the door is properly fixed in the end position and since it is not blocked by any device in this position, it is possible at any time to perform emergency opening by means of the emergency door opening device. Such opening is also indicated properly by the closing check.

Thus, an additional lock as well as a bypassing of the end closing position control becomes superfluous with the invention. There is also no risk of actuating the drive when the lock is locked.

Over £ 23S ch

The invention is explained in more detail below by way of example with reference to the drawing.

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Fig. 1 shows a door equipped according to the invention from the inside and side view. Fig. 2 shows a detailed view in the direction of arrow II of Fig. 1 in the closed position. Fig. 3 shows the view of Fig. 2 in the locked position.

FIG. 4 shows another enlargement of the mechanism analogous to FIG. 2. FIG. 5 shows the view of FIG. 4 but in the position of FIG. 3.

When for example _ management and "Elongated YX2 Ϊ ^E 5 ⁱⁿ FIG. 1 is an internal view and a side view of the invention 'equipped with double, electrically operated exterior swinging doors. The door leaf 1 is pivotable by means of a lower guide 2 and an upper guide 3 around a vertically arranged door column tube 4. A guide guide 5 is provided in the upper region of the door to ensure that the door leaf pivots substantially parallel to itself outside and from the center of the door opening. The actual door drive which carries out this movement is provided in the upper region between the door column tubes 4 of the two door leaves 1.

FIG. 2 is a larger-scale view in the direction of arrow II of FIG. 1, showing the drive mechanism for the door leaves 11; This drive consists of a pivot lever 6 which is pivotable about a vertical axis 7 »fixedly mounted on the vehicle body. The arm on the door side of the pivot lever 6 is connected by means of guides 8 and 10 in each case to one axial guide 9, 11 which is fixedly connected to one of the two door pillar tubes 4. This rotates the door pillar tubes 4 together with the pivot lever 6, if it rotates.

The pivoting lever 1) is rotated by engagement of the pivotably movable pin-shaped component 12 into the curved slide 13 in the arm of the pivoting lever 6, which is on the drive side. The engagement conditions are illustrated in more detail in FIGS. 4 and 5, wherein the position of the drive and thus of the pivoting lever 6 is always the same in FIGS. 2 and 4 or FIGS. 8 and 5.

The situation in FIGS. 2 and 4 corresponds essentially to the closed, but not yet locked, position of the door leaves. As can easily be seen from FIG. 4, the closing force in the direction of the arrow 3 coming from the door and acting on the pivoting lever 6, due to the shape of the curved gate 13, now leads to a slight displacement of the pin-shaped component 12 along the active direction 14 of the drive.

As can be clearly seen from FIG. 4, particularly in conjunction with FIG. 5, when the drive is operating properly, that is, when the pin-shaped component 12 moves in the actuator operating direction 14, it is very well capable of delivering the pivoting lever 6. to the position shown in FIG. 3, in which the opening of the door by pivoting the pivot lever 6 is no longer possible, also in the case of a freely movable pin-shaped component 12 with respect to the self-locking section of the curved slide 13.

Therefore, according to the invention, in the event of a door failure, a manually operable closing mechanism or a closing mechanism in the drive branch is provided in front of the self-locking part. In the present case, it is a tooth-shaped device 15 which is pivotable about a vertical axis 16, wherein the tooth-shaped device 1d acts in the closing direction on a drive part 17 which is in operative connection with the pin-shaped part 12.

Thus, in the case of a broken door drive, it is only necessary to bring the pin-shaped component 12 to the locking position by means of a lever or a rod as shown in FIGS. 2 and 3, if the position shown in FIG. 2 or 4. Since there is no self-locking effect from the open position of the door to the position shown, there is no difficulty in closing the door to this position. The remaining small path, i.e. the blocking path, can be easily overcome by means of a manually operated mechanism using the corresponding lever frame.

Upon reaching the locked closed end position shown in Figures 3 and 5, the door can no longer be opened manually from outside, the closed door detector indicates a proper closed position, and the door can be modified to indicate that it is defective and that it is closed for normal operation.

However, if an emergency occurs, the door can of course be opened by means of the emergency door switch.

typically, the emergency door opening mechanism consists of a resiliently loaded piston or the like, which forces the pin-shaped component 12, including its carrier, from the self-locking position and at the same time for safety reasons switches the door drive to the k position adapted for this purpose. This can be done either by interrupting the power supply of the electric drive or by venting the pneumatic cylinder of the pneumatic drive. This force-free connection of the door operator is usually carried out at a different location than the trip in the event of a failure of the door operator, so that the two devices operate completely independently of each other.

The invention is not limited to the illustrated example, but can also be applied to all other door drives which are self-locking in the end closing region of the door, i.e. all door drives in which the door can be slid into the closing end secure the positions against opening by means of a force acting on the door. In all these cases, only a manually operable closing device in the door drive must be provided in the area of the force transmission in front of the self-locking component.

4 and 5, it would be possible to provide a spindle with a thumb similar to a horizontally arranged car jack instead of a toothed rotary device 15, and it is also possible to provide a pull-wire mechanism.

In the case of a door drive device having a rotary drive and not a sliding drive, it is of course also possible to use the principle according to the invention, whereby there is only a need for an appropriate rotational movement in front of the self-locking component. on the rotating part of the drive.

Also for actuators, which is not self-locking action produced by means of sets, and means to pivot nezabírajícího but which exceeds the dead center .is possible to customize the machine according to the invention and it is essential only that the skutečnosfc _P by a manually operated mechanism by disturbance force-free door drive, or at least the component which interacts with the self-locking component to a position corresponding to the closing end position of the door.

Of course, it is not necessary to bring the drive itself to this position, which would require considerable forces under certain circumstances, and in fact it is sufficient to bring the component which is involved in the saring action and which is provided on the drive side to the corresponding position.

and

The term drive train means all mechanical components which are provided between the engine itself or the piston and between the door or door leaf, whereby the terms on the drive side and door side are used specifically in relation to self-locking for all components of the drive branch, which are <adjusted on the corresponding side of the force flow. The self-locking edge of the illustrated example extends between the kwi press on the door side and between the pin on the drive side. Other structures should be assessed accordingly.

Claims (3)

PATENT CLAIMS An electric or pneumatic door drive, in particular for a vehicle door, which is self-locking in the end closing position of a door, characterized in that a manually operable device (15) is provided in the door drive branch on the side of the self-locking device. the component (12) acting at least on the drive side of the self-locking device can be brought to a position corresponding to the end closing position of the door. Electric or pneumatic door drive according to claim 1, characterized in that the manually operable device (15) is in the form of a tooth, pivotable by means of a lever or the like around an axis (16) and acting on the door drive component (12). Electric or pneumatic door drive according to claim 1, characterized in that the controllable hub (15) is formed by a thumb nut which is axially slidable and rotatable by a crank, the thumb acting on the door drive component (12).