EP0356728B1 - Control device for the closure sequence of double-wing doors - Google Patents

Abstract

An arrangement for controlling the closing sequence of two wings of windows, doors, and the like, especially smoke or fire protection doors, which are closable by means of a door-closing device each. The two wings are a moving wing to be opened first and a resting wing to be opened subsequently, so that projecting edges of the doors which face each other come into contact with each other in the correct sequence. A control device is actuated primarily by the slide rollers of the door-closing device of the resting wing when the resting wing is opened. With the use of a control lever and a sliding member displaced by the control lever toward the axis of rotation of the resting lever, a locking member is pivoted into the return end region of the guide roller of the door-closing device of the moving wing. This locking member locks the final closing movement of the moving wing until the resting wing has been closed. The sliding member is maintained with the aid of a locking device in a swung-out position until the resting wing has again been closed. The guide roller of the door-closing device of the resting wing releases the locking device.

Description

The invention relates to a device for controlling the closing sequence of two sashes of windows, doors or the like which can be closed by means of a door closer, according to the preamble of claim 1. Such a device has become known from DE-A-33 36 739. If the door or window sash, which is the normal case, is provided with rebates, one wing must always be closed in front of the other so that the rebates interlock or the second door is closed at all by the fold of the first door without hindrance can. Often, in normal cases with two-leaf doors of this type, one door leaf is kept closed, which is why it is called a passive leaf, while the other door leaf is constantly open and closed or held for a while in an open position. It is called the active wing. Both door leaves are equipped with a door closer of a known type, which, if they have not been determined, turns them back into the closed position immediately after their release. In the case of a locking device, this must be released manually or automatically before closing so that the door closer can take over its locking function. In the case of smoke and fire protection doors, such a locking device can be automatically released in the event of a fire by an appropriate monitoring device. In this case in particular, it must then be ensured that the closing sequence of the two doors is strictly adhered to, because otherwise the doors cannot be closed completely. One can close one door, in particular the active leaf, up to a relatively small open position, but it must then remain in this position until the other leaf or the passive leaf has assumed its closed position.

It is assumed below that the passive leaf in front of the active leaf must always be closed.

Door closer is understood here in the usual way to be a device which basically loads the leaf in the closing direction of rotation and the force of which can have an effect if no other forces or holding forces act on the opened or partially opened leaf and the wing has not been locked. Such door closers can be located both at the top and at the bottom of the door.

A device for controlling the closing sequence, also referred to as a closing sequence controller for short, not only has to close the doors securely in a predetermined order, but also certain requirements are imposed on it aesthetically. In addition, it should be protected against damage, in particular against willful damage. It is also important that the closing sequence controller is as reliable as possible, especially when it comes to fire or smoke protection doors.

In the device known from DE-A-33 36 739, a sliding member is arranged in a guide rail parallel to the frame via a slider coupled to it by pivoting the passive leaf, which has different height gradations at one end, through which a locking member during the longitudinal displacement of the Push member is raised or lowered. In the closed position of the passive leaf, the sliding member is pushed so far towards the active leaf that the locking element is held in its highest position and the active leaf can be opened and closed freely. With the opening movement of the passive leaf there is a displacement of the slider and the associated sliding member in the opposite direction, whereby the Locking member is shifted downward and engages in a saw toothing of a bolt connected to the active wing swivel arm.

Characterized in that the sliding member of the known device is continuously coupled to the slider of the passive leaf, the active leaf is secured in any position by the engagement of the locking member in the saw teeth and can only be moved by skipping the teeth.

In the event of incorrect manipulation, if the active leaf is moved with force when the passive leaf is open, the locking element or the saw toothing in which the locking element engages can be damaged.

The object of the invention is therefore to avoid the disadvantages of the previously known closing sequence controller and to develop a device of the type described at the outset in such a way that operational reliability is increased. In addition, this device should be robust, inexpensive to manufacture and easy to assemble, with both the active leaf and the passive leaf being able to be operated essentially independently of the locking device for closing sequence control, essentially in the range of motion.

To achieve this object, it is proposed according to the invention that the device is designed according to the preamble of claim 1 in accordance with the characterizing part of this claim.

An embodiment of this device is used in connection with door closers which have a pivotable sliding arm and which are fastened to the door in the case of an overhead door closer. The sliding arm of the door closer is moved along the fixed frame, normally carrying a guide roller or the like at its free end, which is moved along the upper horizontal bar in an overhead door closer when the door is opened or closed. The guide roller is preferably guided in a corresponding rail which is mounted on the crossbar of the fixed frame. A corresponding sliding element can also take the place of a guide roller.

The horizontal movement of the guide roller or the like. Along the cross member of the fixed frame when opening the door and the movement in the opposite direction when closing the door is used to control the closing sequence. If it is assumed that the active leaf is to be opened as the first and the passive leaf as the second leaf, then the active leaf can also be easily opened and closed in a known manner when this control device is installed. However, if you open the passive leaf when the active leaf is open or at least partially open, whereby the active leaf must be open at least so far that the folds of the two leaves come past each other, then opening the passive leaf causes a corresponding displacement movement of the guide roller of its door closer against the axis of rotation of the passive leaf there. Of course, the guide roller of the active leaf moves towards the axis of rotation of the active leaf during its opening movement.

The guide roller of the passive leaf causes an adjustment movement of the locking member from the ineffective into a locking position during its opening movement. This is determined so that when the active leaf is closed, before the closing or at least before the passive leaf is completely closed, the active leaf is stopped in an open position, which enables the passive leaf to be closed completely without hindrance from the folds. When the passive leaf is closed, the guide role of its door closer also returns to the starting position. At the end of the return movement of this guide roller, it moves the locking part against the resistance of its load spring in the unlocking direction. This then releases the sliding member, which can return to its starting position due to the restoring spring acting on it. This return movement of the sliding member automatically returns the locking member to its ineffective position. This eliminates the obstacle for the guide role of the door closer on the active leaf and therefore this door closer can completely close the active leaf.

If you open the passive leaf in front of the active leaf in improper operation, this also leads to a corresponding sliding movement of the sliding member in the sense explained above and a resulting transfer of the locking member in the direction of its locking position. It then engages the guide roller of the active leaf door closer and, via this and the associated sliding arm, causes the active leaf to open. Because in the meantime the locking device on the passive leaf has come into operation, the locking member remains in its locked position until the entire device is activated in the manner described via the closing-end movement of the passive leaf.

The locking device consisting of the locking element of the sliding member and the frame part fixed but spring-loaded and displaceable locking part blocks the return movement of the sliding member until it is triggered, which is why it forms a locking locking device. The control lever can be mounted directly or indirectly on the sliding link. The control lever is spring loaded against the guide roller. So if you swivel the control lever over the guide roller, its load spring is tensioned or tensioned more. The locking member and the locking element are coupled to one another via the sliding member and are connected in terms of movement such that the pivoting movement of the control lever into a release position for the guide roller resting thereon is only released when the locking member is in its locked position. Because when the guide roller is released from the fixed leaf by the control lever, the sliding element is prevented from being displaced by the locking device, the correct closing sequence of the two leaves is ensured even when the passive leaf is opened again, during which the guide roller moves away from the control lever. As soon as this guide roller has been released or released by the control lever, the passive leaf can be opened more easily without any problems, if necessary determined in the open position and closed again at the necessary or desired time. The spring-loaded locking part is according to claim 1 in the Starting position of the fixed leaf guide roller held in an ineffective position, this being done in particular via the guide roller itself. It is under the effect of its load spring. As soon as the guide roller releases the latching part in the latter case, which can already be the case after a brief rotary opening movement of the passive leaf, the loading spring presses the latching part against the latching element and thereby causes the latching. The latching element is expediently designed in such a way that it can be latched in a plurality of displacement positions of the sliding member.

Another embodiment of claim 1 relates in particular to a floor closer. When the wing coupled with it is rotated, an element of the door closer is shifted in a straight line, which may in particular be the damping piston present in such door closers. Its movement can be guided, for example, via a lateral arm to a point on the housing at which the elements of the device according to the invention required for the closing sequence control of the two doors can be accommodated. The side arm can carry the role mentioned in claim 1, a pin or a similar component. If this roller or the like performs a movement corresponding to the passive leaf guide roller or the walking wing guide roller when opening and closing the door, it is easy to see that the elements shown in the drawing can be assigned to this roller in exactly the same way, as in the illustrated embodiment of the active leaf guide roller 14 or the fixed leaf guide roller 15. As a result, the run Movements and control processes in the second alternative are the same as in the first. Of course, in the case of a floor closer, the sliding link is assigned to the floor, and it must be appropriately protected and safely accommodated therein.

In claims 2 and following, reference is only made to the first embodiment, that is, an embodiment in particular for sliding arm door closers, in order to obtain claims that are as clear as possible. In the case of a floor closer, for example, "role of the active wing" and "role of the active wing" must be set at the relevant points at least instead of "active leaf guide roller" and instead of "passive leaf guide roller". The lack of reference to these "roles or the like." in claims 2 to 19 may not be understood or interpreted restrictively.

Further refinements of this device and the associated advantages result from the following description of an exemplary embodiment.

Fig. 1

Das obere Ende zweier Türflügel in einem festen Rahmen mit der eingebauten Vorrichtung zur Steuerung der Schließvorrichtung in der Ansicht bei geschlossenen Flügeln,

Fig. 2

eine Draufsicht auf die Oberseite der Fig. 1 bei geschlossenen Flügeln und angedeuteten teilweise geöffneten Flügeln,

Fig. 3

in vergrößertem Maßstab einen Ausschnitt aus der Vorrichtung, teilweise in horizontaler Richtung geschnitten,

Fig. 4

in stärkerer Vergrößerung einen Ausschnitt aus der linken Bildhälfte der Fig. 1 bei geschlossenem linken Flügel und

Fig. 5

bei teilweise geöffnetem linkem Flügel,

Fig. 6

eine dementsprechende Darstellung der rechten Bildhälfte der Fig. 3 bei geschlossenem rechten Flügel und

Fig. 7

bei teilweise geöffnetem rechtem Flügel,

Fig. 8

in nochmals stärkerer Vergrößerung ein Bauelement der Fig. 4,

Fig. 9

einen Schnitt gemäß der Linie IX-IX der Fig. 8,

Fig. 10

vergrößert einen senkrechten Schnitt durch das obere Flügelende und den festen Rahmen im Bereich eines Obentürschließers

The drawing shows such an embodiment. Here represent:

Fig. 1

The upper end of two door leaves in a fixed frame with the built-in device for controlling the locking device in the view when the leaves are closed,

Fig. 2

2 shows a top view of the top of FIG. 1 with the wings closed and the partially opened wings indicated,

Fig. 3

an enlarged section of the device, partially cut in the horizontal direction,

Fig. 4

in a larger magnification a section from the left half of FIG. 1 with the left wing closed and

Fig. 5

with the left wing partially open,

Fig. 6

a corresponding representation of the right half of FIG. 3 with the right wing closed and

Fig. 7

with the right wing partially open,

Fig. 8

in a still larger magnification a component of FIG. 4,

Fig. 9

8 shows a section along the line IX-IX of FIG. 8,

Fig. 10

Enlarges a vertical section through the upper wing end and the fixed frame in the area of an overhead door closer

Two doors are pivoted on a fixed frame 1. Usually only the left door is opened, which is why it is referred to as active wing 2. Because the right wing generally remains closed, it is referred to as the passive wing 3. The active wing 2 is attached to the left vertical beam 5 of the fixed frame 1 by means of at least two pivot bearings 4 arranged one above the other, while the passive wing 3 is pivoted to the right vertical beam by means of pivot bearings 6 7 of the fixed frame 1 is articulated. At least at their free vertical end, the two frames are equipped with a fold 8 or 9. When the wings are closed, the folds overlap. From Fig. 2 it can easily be seen that the passive leaf 3 cannot be closed completely if the active leaf 2 is too far or is already completely closed. For this reason, the device described below ensures that the passive leaf 3 is closed in front of the active leaf 2.

The closing of the active leaf 2 takes place via a door closer 10 of a known type. To close the passive leaf 3, a door closer 11 is also expediently used of the same design. In the exemplary embodiment, overhead door closers are used, which are designed as so-called sliding arm door closers. However, the invention can not only be used with door closers of this type, it can also be floor door closers. Sliding arm door closers, as shown by the broken line in FIG. 2, are attached to door 2 or 3 and each have a sliding arm 12 or 13. Each sliding arm carries a sliding roller 14 or 15 or the like at its free end. which can be seen particularly well in FIG. 10 but also in FIG. 3. While the slide arm 12, 13 assumes an approximately parallel or possibly slightly inclined position to the plane when the door is closed, it is pivoted relative to the plane of the door when the wing is opened. The roller then moves to the pivot side of the door. Accordingly, when the wing 2 is opened, it performs a sliding movement parallel to the fixed cross member in the direction of arrow 16, while the sliding roller 15 of the fixed wing 3 is displaced in the direction of arrow 17 (FIG. 3).

The partially or fully opened door can be determined in a known manner, for example by a locking device integrated in the door closer. When the partially or fully opened door is released, it closes in the direction of the arrow 18 (active leaf) or 19 (passive leaf). If, according to FIG. 2, the passive leaf 3 is opened further than the active leaf 2, the closing movement of the latter ends with the aid of the device according to the invention at the latest when the rotational position shown in FIG. 2 is reached. Then the fold 9 of the passive leaf 3 can still be moved past the fold 8.

As a rule, the sliding rollers 14 and 15 are guided in the opening and closing of the door in a guide rail 20 and 21, which is mounted on an upper door closer on the upper cross member of the fixed frame 1, as a rule. The guide rails 20, 21 are divided into two chambers 23 and 24 by means of a central wall 22. The outer chamber 24 forms the longitudinal guide for the associated slide roller 14 or 15. In the inner chamber 23 houses the essential elements of the closing sequence control device.

Essential elements of the device for controlling the closing sequence of the two leaves 2 and 3 form a locking member 25, a sliding member 26 and a latching device 27. In addition, the control lever 28 is an important element.

The rotary member 25 has an arcuate back 29, with which it is adapted to this shape e.g. slit-shaped receptacle of a guide part 30 supports. The latter is attached to the guide rail 20 at its right end (Fig. 3). Accordingly, the back 29 slides on the circular support surface 31 of the guide part 30. It is consequently a rotary member, the rotational movement of which is limited by an arcuate guide slot 32 of the locking member 25 and a guide pin 33 engaging therein. The latter is held in the guide part 30.

At its upper end in FIG. 3, the locking member 25 carries a driving bolt 34 which extends transversely to its plane and which projects on both sides and which, in the rotational position of the locking member 25 shown in FIG. 8, is supported on a wall 35 of the sliding member 26 which extends transversely to the image plane . The arcuate end 36 in the area of the driving pin 34 rests on a pressure piece 37, on which two concentrically arranged Support springs 38 and 39. They are helical compression springs. Their left ends (FIG. 9) are supported indirectly via a contact member 40 on the sliding member 26. Rotation of the locking member 25 from the locking position shown in FIG. 5 to the starting position shown in FIG. 4 causes the springs 38 and 39 to be tensioned. A third spring is attached to the inner end of the pressure piece 37, which has a return spring 41 for the sliding member 26 forms. Its left end, which can be seen in FIG. 4, is suspended on a bolt 42 of the guide rail 20. If this return spring 41 pulls the sliding member 26, which is shifted to the right in FIG. 5, back into the initial position shown in FIG. 4, the wall 35 presses against the driving pin 34 and thereby causes the locking member 25 to rotate back in the direction of the arrow 43 Springs 38 and 39 with the pressure piece 37 a damping device 44.

The lower end 45 in FIG. 4 of the approximately crescent-shaped locking member 25 surrounds the associated sliding roller 14 of the door closer 10 with an arcuate edge 46. When the door is opened, the sliding roller 14 emerges. When the locking member 25 is in its locking position (FIG. 5), the sliding roller 14 arriving in the direction of the arrow 47 can only be moved up to the bottom end 45. Any shock that occurs during this closing process of the active leaf is absorbed by the damping device 44.

The sliding roller 14 can, however, rotate the locking member 25 in the direction of arrow 43 when the sliding member 26 is released for displacement in the direction of arrow 48. This return movement of the sliding member 26 is blocked by the latching device 27 (FIG. 3) until the passive leaf 3 is closed.

The sliding link 26 consists at least essentially of two sliding link parts 49 and 50 arranged in an extension from one another, which are coupled via a preferably length-adjustable intermediate link 51. In the exemplary embodiment, the sliding link part 49 is assigned to the guide rail 20 and the sliding link part 50 is assigned to the guide rail 21. Each of these two sliding link parts can be constructed from further individual parts, but this is not important in detail. The intermediate link can be a cable pull, a connecting rod or the like. In order to be able to set the mutual distance between the two sliding link parts 49 and 50 exactly, a length adjustment device 52 is provided, for example, on the intermediate link 51. It can be of a known type. The construction of the exemplary embodiment is quite clear, for example from FIG. 3. A locking element 53 of the locking device 27 is located on the sliding link part 50 on the passive leaf side. According to FIG. It advantageously has the shape of a rack with sawtooth-like teeth. The locking element 53 works together with a spring-loaded locking part 54, which in the direction of the double arrow 55 transversely to the longitudinal axis the outer chamber 24 of the guide rail 21 is slidable, in which it is located. The loading spring is designated 56. The locking part 54 has a tooth 57 which can enter the tooth gaps of the locking element 53. 6, however, this tooth 57 does not engage in the tooth gaps because it is prevented from doing so by the sliding roller 15. However, if he does intervene, the sliding link part 50 can be moved further in the direction of the arrow 58, but cannot be moved back in the opposite direction. A displacement movement of the sliding member part 50 and thus of the entire sliding member 26 directed against the arrow 58 is only possible when the tooth 57 has been disengaged from the teeth of the latching element 53. In order to be able to adjust the tooth 57 in the longitudinal direction with respect to the latching element 53, the latching part 54 is slidably mounted on an adjusting member 59, which can be adjusted relative to the end piece 61 with the aid of an actuator 60 consisting of a screw spindle. The actuator 60 is rotatably but non-displaceably mounted in the adjusting member 59 and screwed into a thread 62 of the end piece 61.

For sliding guidance of the sliding link part 50 in the inner chamber 23 of the guide rail 21, the sliding link part 50 is provided with a longitudinal slot 63, in which a guide pin 64 engages and which extends in the longitudinal direction of the guide rail 21. In parallel there is a receptacle 65 for a compression spring 66, which is designed as a helical compression spring. Your left end is against the blind hole of the receptacle 65, while its right end, in particular with the interposition of a pressure member 67, bears against a first lever arm 68 of the control lever 28.

The control lever 28 is rotatably mounted on the sliding member 50 by means of a bearing axis 69. The bearing axis 69 is preferably located at the free end of the sliding link part 50 in the area of the right locking element end.

The compression spring 66 holds the control lever 28 when the passive leaf 3 is closed in the position shown in FIG. 6. He grips with its arcuate edge 70 the sliding roller 15. The wedge-shaped projection 71 creates an outer run-up slope 72 and an inner push-off slope 73. It is easy to see that the sliding roller 15 located on the right of the wedge-shaped projection 71 when the passive leaf 3 is open is in its return movement in the direction of the arrow 74 can pivot the control lever 28 against the resistance of the compression spring 66 in the direction of the arrow 75 via the ramp 72. In the same way, the slide roller 15 can also pivot the control lever 28 in the direction of the arrow 75 in the event of a displacement movement directed against the arrow 74 via the bevel 73.

At a lateral distance from the bearing axis 69, a parallel, in particular bolt-shaped, guide element 76 is attached to the control lever 28. It engages in a guide slot 77 which is in a plane below or above the pivoting plane of the control lever 28 can be. In the exemplary embodiment, this guide slot is provided on the guide rail 21, in particular on the bottom of the inner chamber 23. It consists of a straight, that is to say parallel to the longitudinal axis of the guide rail 21 central piece 78 and two diagonally extending, pointing towards the fixed frame 1 divergent side pieces 79 and 80 (Fig. 6). As a result, the control lever 28 cannot be rotated in the direction of the arrow 75 when the guide element 76 is located in the guide slot center piece 78. If, in the manner explained below, an opening movement of the fixed leaf 3 displaces its sliding roller 15 against the arrow 74, the control lever 28 remains in its initial position until the bolt-shaped guide element 76 reaches the obliquely inwardly directed side piece 79. Subsequently, a rotary movement in the direction of arrow 75 is possible, and the sliding roller 15 is then released from the curved edge 70 and is moved past the control lever 28 along the wedge-shaped projection 71.

As shown in FIG. 6 of the drawing, when the inactive leaf 3 is closed, the guide element 76 is located approximately at the transition from the side piece 80 into the middle piece 78. If the sliding member 26 is in its left starting position due to manipulation of this device after the locking device 27 has been released but the sliding roller 15 is located to the right of the wedge-shaped projection 71, the locking of the sliding roller 15 with the control lever 28 is possible in the closed position of the passive leaf 3, because the guide element 76 can escape into the side piece 80. The spring 66 then pivots the control lever 28 back into the starting position shown in FIG. 6. It remains to be added that, with normal actuation and the open leaf 3, the control lever 28 maintains its swiveled-up position as shown in FIG. 7. As a result, the sliding roller 15 cooperates with the ramp 72 only if the device is tampered with or to a small extent if, due to tolerances, the wedge-shaped projection 71 projects somewhat into the path of movement of the returning sliding roller 15.

When the sliding roller 15 arrives at the latching part 54 when the inactive leaf 3 is closed, its shape, in conjunction with a correspondingly extending push-off slope 81, causes the latching part 54 to disengage in the direction of the arrow 82 become effective and with the inactive leaf 3 now retracting the sliding member 26 to the left into the starting position, whereby the locking member 25 is then also turned back into its starting position. Thus, the closing end movement of the sliding roller 14 of the active leaf 2 is possible, whereby the latter is also closed by means of its door closer. It remains to be added that the second lever arm of the control lever 28 carrying the guide element 76 is designated 83.

From the above explanation of the various individual parts the operation of this device is relatively easy to understand. If both wings are closed and the active leaf 2 can be opened, this is easily possible in a conventional manner because there is no obstacle in the way of the necessary displacement movement of the sliding roller 14 of the door closer 10 on the leaf side (FIG. 4). As a result, it can also be closed easily. If, after opening the active leaf 2, the passive leaf 3 is opened, the sliding roller 15 of its door closer 11 takes the sliding member in the direction of the arrow 58 (FIG. 6) via the control lever 28. As soon as the sliding roller 15 has moved sufficiently far away from the latching part 54 of the latching device 27, the tooth 54 enters the latching element 53. This and the sliding member 26 can be moved even further in the direction of arrow 58, but not in the opposite direction. As a result, the locking member 25 rotated when the sliding member 26 is moved into a locking position remains in its locking position shown in FIG. 3. If the active leaf 2 is closed in front of the passive leaf 3, this is only possible until the sliding roller 14 hits the locking member 25. The slanting position of the active leaf 2, which can be seen in FIG. 2, subsequently enables the inactive leaf 3 to be closed. The latching device 27 is then released in the manner described and the locking member 25 is rotated out of the sliding end region of the sliding roller 14 via the sliding member 26, so that the door closer 10 can now cause the closing or remaining closing of the active leaf.

The parts of the device are protected in the guide rails 20, 21, so that they are normally not damaged and usually cannot be operated or overridden. Of course, this also has a correspondingly positive aesthetic effect. As already explained, functioning is ensured even in the case of unwanted and intentional incorrect operation. In the event of manipulation, damage to the parts is basically ruled out, so that the function is retained in each case. When the latching device is triggered, the locking member 25 is returned to its starting position by the spring 41, so that the spring force in the door closer is fully available for reaching the end position of the active leaf 2. It is therefore also possible to overcome the forces which are necessary, for example, to operate a trap.

The locking device is triggered regardless of the width of the door leaf. It is only necessary to adjust the length of the connection between the locking device 27 and the locking member 25.

As already indicated, the device can also be used in conjunction with floor door closers. It is essential that a longitudinal movement in the system of the floor door closer, for example on the damping piston, is used for the control. The locking device or the locking member 25 can be accommodated in the housing of such a floor closer.

Regarding the construction itself, it should also be noted that the path of the driving pin 34 on the locking member 25 is smaller than the path of the associated sliding roller 14. In addition, a separate insert 84 can be introduced and fastened into the inner chamber 23 of the guide rail 21, in which the sliding-link part on the passive leaf side 50 is slidably mounted. In this case, the guide slot 77 is located on this insert 84 or additionally on this insert 84.

If, when the passive leaf 3 is open, an attempt is made to close the active leaf under the action of force, this force is absorbed by the damping device 44. Then the leaf 2 is opened again by the spring force so that the correct closing sequence is guaranteed.

Claims (19)

1. Device for controlling the closing sequence of two leaves/wings (2, 3) of windows, doors, or the like, that is, a movable leaf/wing (2) which can be opened first and a fixed leaf/wing (3) which can be opened subsequently, each of which can be closed by means of a door closer (10, 11), wherein each door closer (10, 11) is fixed to its leaf/wing and is equipped with a guide roller (14, 15) or the like which is mounted on a pivotable sliding arm (12, 13) and is guided horizontally on a fixed frame (1), or each door closer and the door connected thereto has an element, particularly a hydraulic piston, which is movable as a result of the pivoting of the door, wherein the opening movement of the fixed leaf/wing (3) causes a sliding member (26), which is adjustable horizontally and parallel to the plane of the fixed frame, to actuate a blocking element (25) and the sliding member (26) is provided with or connected to a stop element (53) of a locating device (27) which prevents the movable leaf/wing (2) from closing as long as the fixed leaf/wing (3) is too far open or is fully open, characterised in that the blocking element (25) can be moved into the end region to which the guide roller (14) of the movable leaf/wing returns, or to which a roller or the like of the movable leaf/wing connected immovably to the movable element, returns; in that the stop element (53) can be moved by the opening movement of the guide roller (15) of the fixed leaf/wing or of the roller or the like thereof, against the force of a return spring (41); in that a spring-loaded control lever (28) mounted on the sliding member (26) is connected between the stop element (53) and the guide roller (15) of the fixed leaf/wing, or the roller or the like thereof, and projects into the initial sliding region of the guide roller (15) of the fixed leaf/wing, or the roller or the like thereof, and is released for pivoting only when the blocking element (25) is in the blocking position; and in that a spring-loaded locking part (54) of the locating device (27) is held in the inoperative position when the guide roller (15) of the fixed leaf/wing, or the roller or the like thereof, is in the initial position, and can be released by the return movement of the guide roller (15).
2. Device according to Claim 1, characterised in that the blocking element (25) is formed as a thrust element of rotary slide valve type mounted on the sliding member (26).
3. Device according to Claim 2, characterised in that the guide rollers (14, 15) of the door closers (10, 11) are mounted in a first longitudinal guide (24) of one or each guide rail (20, 21) mounted on the fixed frame (1) and the sliding member (26) is mounted in a second longitudinal guide (23) of the guide rail or rails (20, 21), parallel to the first, wherein the second longitudinal guide (23) is disposed in particular between the first guide (24) and the adjacent frame cross-member.
4. Device according to Claims 2 and 3, characterised in that the blocking element (25) is guided in the direction of rotation (43) by an arcuate guide slot (32) and a guide pin (33) engaged therein.
5. Device according to Claim 4, characterised in that the guide slot (32) is in the blocking element (25) and a rear face (29) of the blocking element (25), which is concentric with the slot (32), abuts a corresponding concave bearing surface (31) of a guide element (30) mounted on the guide rail (20).
6. Device according to at least one of Claims 2 to 5, characterised in that the blocking element (25), which is in particular substantially crescent-shaped, bears at its end (36) facing away from the guide roller (14) at the movable leaf/wing end an entrainment pin (34) which projects transversely to the rotational plane of the element (25) and is disposed between a wall (35) or the like of the sliding member (26), which can at least lie alongside it, and a damping device (44) adjacent the end of the blocking element.
7. Device according to Claim 6, characterised in that the damping device (44) comprises at least one, but preferably two, compression springs (38, 39).
8. Device according to Claim 7, characterised in that one end of the return spring (41) for the sliding member (26) is connected to a thrust element (37) mounted between the compression springs (38, 39) and the blocking element (25) and the other end of the spring is fixed to the guide rail (20) or to the fixed frame (1).
9. Device according to at least one of the preceding claims, characterised in that the sliding member (26) comprises two parts (49, 50) which are arranged end to end, each of which is housed, in particular, in a separate guide rail (20, 21), and which are connected by a connecting member (51) which is preferably adjustable longitudinally.
10. Device according to Claim 9, characterised in that the stop element (53) is connected to the part (50) of the sliding member which is on the fixed leaf/wing, in particular it is formed integrally therewith.
11. Device according to Claim 10, characterised in that the stop element (53) is constituted by a rack, particularly with saw teeth, and the locking part (54) has a tooth (57) of a corresponding shape.
12. Device according to at least one of Claims 9 to 11, characterised in that the control lever (28) is mounted pivotably on the part (50) of the sliding member which is on the fixed leaf/wing.
13. Device according to Claim 12, characterised in that the control lever (28) is formed by a lever with two arms, whereby its first lever arm (68) lies adjacent a tension spring (66) which bears against the sliding member (26) and, when the door is closed, its second lever arm (83) lies adjacent the guide roller (15) or the like of the door closer (11) of the fixed leaf/wing.
14. Device according to Claim 13, characterised in that when the fixed leaf/wing (3) is closed, the guide roller (15) or the like of the fixed leaf/wing is located between the second lever arm (83) of the control lever (28) and the locking part (54) of the locating device (27).
15. Device according to Claim 13 or Claim 14, characterised in that a guide element (76), particularly a pin-shaped guide element, is disposed on the second lever arm (83) of the control lever (28), at a distance from the bearing shaft (69) thereof, and engages in a guide slot (77) in the guide rail (21), the guide slot (77) comprising a central portion (78) which extends substantially parallel to the plane of the frame and two lateral portions (79, 80) which are inclined relative to the central portion (78) and diverge towards the fixed frame (1).
16. Device according to at least one of the preceding claims, characterised in that a wedge-shaped projection (71) of the control lever (28) extends around the guide roller (15), the two sides (72, 73) of the wedge forming inclined inlet and outlet surfaces for the guide roller (15).
17. Device according to at least one of the preceding claims, characterised in that the spring-loaded locking part (54) is disposed on an adjustment member (59) which is mounted parallel to the plane of the frame, particularly on the guide rail (21), and can be adjusted by means of a control member (60), particularly a screw spindle or the like.
18. Device according to at least one of the preceding claims, characterised in that, when the fixed leaf/wing (3) is closed, an inclined release surface (81) of the loading part (54) abuts the guide roller (15).
19. Device according to at least one of Claims 9 to 18, characterised in that the part (50) of the sliding member which is on the fixed leaf/wing is guided longitudinally on the guide rail (21) by means of a pin-and-elongate-slot connection (63, 64).

Images