EP0141902B1 - Device for controlling the closure sequence of double doors - Google Patents

Abstract

Apparatus is described for regulating the closing sequence of double doors with at least one door closer associated with the leading door and a control arrangement which is actuated by the trailing door and which cooperates with the door closer of the leading door. The special feature of the apparatus lies in the fact that the control arrangement consists of a positioning member, which is arranged in the hinge edge region of the trailing door and is movable by the trailing door between first and second switching positions, and of a connection member which is connected to the positioning member. The connection member extends up to the door closer for the leading door and mechanically transmits the movement of the positioning member, to the closer for the leading door. The leading door end of the connecting member acts on a control member which blocks the closing movement of the door closer in one of the two switching positions of the positioning member.

Description

The invention relates to a device for regulating the closing sequence of double-leaf doors with at least one door closer assigned to the active leaf and a control arrangement which can be actuated via the standing leaf and which cooperates with the door closer of the active leaf and which consists of a first leaf arranged in the area of the passive leaf on the pivot axis side through the fixed leaf and a second switching position of the movable actuator and a connecting element connected to the actuator and mechanically transmitting the actuator movement to the active leaf and interacting with a stencil element.

Devices of this type are known. You have to ensure that the two leaves of a double-leaf door are always transferred from any open position to the closed position so that the passive leaf is the first to reach the closed position and then the active leaf enters the closed position and the door is properly and completely closed.

In addition to a hydraulic closing sequence controller, a mechanical closing sequence regulator of the type mentioned at the outset is also known (DE-A-31 47 239), in which, contrary to the action of a restoring force, e.g. B. a spring, parallel to the door plane adjustable rail is arranged. This rail is provided with a stop at each end. If the inactive leaf moves towards its closed position, the rail is moved so far by means of its inactive leaf side stop shortly before the final closed position is reached that the active leaf side stop of the rail is brought out of the swivel range of a counter stop attached to the active leaf and thus also the active leaf in the closed position is pivotable.

However, it proves to be disadvantageous that the active leaf has to be drilled to attach a counter-stop. This drilling work damages the active leaf and, in the case of fire doors, the behavior in the event of fire is impaired. In particular, it proves to be unfavorable that, when the open and blocked active leaf is forced shut, substantial damage to the rail, door and door frame can occur, which result in costly repair or replacement work.

The object of the present invention is to design a device of the type defined at the outset using a door closer as a locking device in a particularly simple yet reliable manner, to avoid the risks of damage to the door and door frame, to facilitate assembly and to adapt to the most varied of circumstances easy to design.

This object is achieved according to the invention in that the connecting element acts on the stay member of the door closer or its link arm and in that the active leaf end of the connecting member engages in one of the two switching positions of the actuator on the control member of the door closer or the link arm which engages the door closer or its Boom arm blocked during the closing movement.

Through the use of a connecting element which mechanically transmits the actuator movement and thus the instantaneous position of the passive leaf to the closer of the active leaf, in addition to the advantages resulting from the solution of the task at hand, the advantages that no interventions in the hydraulics of door closers are required and already with respect to them can be achieved mounted NO contact there is the possibility of retrofitting.

The connecting element mechanically transmitting the actuator movement is preferably a Bowden cable, but it is also possible, depending on the respective installation conditions, to use a rod or a combination of rod and Bowden cable mounted in the frame d or displaceably in the frame d as the mechanically transmitting connecting element.

If a Bowden cable is used, it is preferably connected to the door closer via a screw head and the control element assigned to the Bowden cable is biased into the blocking position by means of a spring. In this way, by adjusting the relative position of the Bowden cable sleeve and Bowden cable on the screw head, the closing angle of the passive leaf can be conveniently and precisely specified, upon reaching which the active leaf is released in the closing direction.

An advantageous embodiment of the invention is that the control member consists of a in a guide housing: arranged, under the bias of a spring and connected to the Bowden cable locking slide, which cooperates with a non-rotatably mounted cam on the closer axis, which stops a stop for the locking slide having. The guide housing is preferably screwed to the closer housing, i. H. the guide housing can be screwed onto the closer housing without difficulty even in the case of retrofitting.

In addition to the already mentioned advantage of retrofitting, the extremely simple construction and the possibility of being able to provide practically every conventional hydraulic door closer with an additional function by means of a few additional parts is significant in this embodiment variant.

According to a further embodiment of the invention, in the connecting joint of the two arms of the closer linkage, a cam disk which is connected to the closer-side arm in a rotationally fixed manner and has a stop is arranged, which cooperates with a locking slide guided in the other arm and under the pretension of a spring, which is connected to the Bowden cable supported by its sleeve on the arm.

The main advantages of this design variant are the particularly simple retrofitting, which is limited to a rod exchange, and the fact that a Bowden cable permanently attached to the frame does not have to be placed with a large loop for the normally mounted closer on the door, but directly from the frame into it Linkage can run.

Particularly advantageous refinements and variants of the invention are specified in the subclaims.

• Fig. 1 eine schematische Darstellung einer zweiflügeligen Tür mit einer Vorrichtung zur Schließfolgeregelung,
• Fig. 2 eine schematisierte Teilschnittdarstellung eines Türschließers mit einer Einrichtung zur Schließfolgeregelung,
• Fig. 3 eine schematische Draufsicht eines zwischen einem Türschließer und einer Zarge verlaufenden Gestänges mit einer integrierten Vorrichtung zur Schließfolgeregelung,
• Fig. 4 eine Teilschnittdarstellung zur Erläuterung des Funktionsprinzips der Vorrichtung nach Fig. 3,
• Fig. 5 eine schematische Teil-Seitenansicht eines mit einer gesteuerten Festhaltevorrichtung versehenen, an der Zarge befestigten Gestängearms,
• Fig. 6 eine Vorderansicht der Anordnung nach Fig. 5 mit im Schnitt zu sehendem Gestängearm,
• Fig. 7 eine Prinzipdarstellung zur Erläuterung der Wirkungcweise der Festhaltevorrichtung nach den Fig. 5 und 6,
• Fig. 8 eine schematische, teilweise geschnitten gezeigte Darstellung eines hydraulischen Türschließers mit steuerbarer Blockiereinrichtung,
• Fig. 9 eine schematische Darstellung einer weiteren Ausführungsvariante eines hydraulischen Türschließers mit steuerbarer Blockiereinrichtung, und

The invention is explained in more detail below with reference to the drawing using exemplary embodiments; in the drawing shows:

• 1 is a schematic representation of a two-leaf door with a device for closing sequence control,
• 2 is a schematic partial sectional view of a door closer with a device for closing sequence control,
• 3 shows a schematic top view of a linkage running between a door closer and a frame with an integrated device for closing sequence control,
• 4 shows a partial sectional view to explain the functional principle of the device according to FIG. 3,
• 5 is a schematic partial side view of a link arm provided with a controlled holding device and attached to the frame,
• 6 is a front view of the arrangement of FIG. 5 with the link arm to be seen in section,
• 7 is a schematic diagram for explaining the mode of operation of the holding device according to FIGS. 5 and 6,
• 8 shows a schematic illustration, partly in section, of a hydraulic door closer with controllable blocking device,
• 9 shows a schematic illustration of a further embodiment variant of a hydraulic door closer with controllable blocking device, and

Fig. 10 is a schematic partial sectional view of the coupling of a Bowden cable to a valve member provided in the closer housing.

1 shows a two-leaf door with passive leaf 11 and active leaf 12, which are shown in a partially open position. Each of the two wings 11, 12 is provided with an overhead door closer 2, 2 '. The axis 10 of each closer 2, 2 'is connected to the frame 13 via a linkage 9.

In the swiveling range of the end face of the fixed leaf 11 on the pivot bearing side there is an actuator 14 which, when the fixed leaf is in the closed position, assumes a first position and a second position in the open position of the fixed leaf 11. These two positions or positions of the actuator 14 are transmitted via a mechanical connecting element, in the example shown by means of a Bowden cable arrangement 5, to the door closer 2 of the active leaf in order to close the active leaf 12 as a function of the position of the actuator 14 and thus as a function of the position to control the passive leaf 11. The Bowden cable 5 is guided in the frame 13 and, when the device is mounted, does not appear optically and, in particular, does not cause any problems.

The arrangement shown in connection with top door closers according to FIG. 1 can in principle be used in the same way for floor door closers.

Fig. 2 shows a mechanical embodiment of a device for regulating the closing sequence, a cam 3 being placed on the axis 10 of the closer 2, which is secured against rotation by a corresponding flattening of the axis and a complementarily shaped receptacle in the cam 3. The cam disc 3 is held down by a spacer sleeve 6 extending between this disc 3 and a link arm 9 via the screw which serves to fix the linkage.

A locking mechanism interacts with the cam disc 3, which consists of a locking slide 8 which is displaceably mounted in a guide housing 4 and which is under the prestress of a compression spring 17 and is connected to the Bowden cable 5. The guide housing 4 is preferably screwed onto the top of the closer housing 2.

The locking slide 8 engages on the cam disc 3 and interacts with a cam stop 7, this stop 7 being structurally sufficiently stable and designed in such a way that the decoupling of the stop 7 and the locking slide 8 can take place with comparatively low forces. The mutually engaging surfaces of stop 7 and locking slide 8 preferably run obliquely to the locking slide longitudinal axis.

The device works as follows: When the passive leaf is open, the Bowden cable is relieved, d. H. the locking slide 8 engages on the cam disc 3, and when the passive leaf is closed, the Bowden cable is pulled; H. the locking slide 8 is retracted into the guide housing 4 against the biasing force of the spring 7.

If both doors, i.e. H. When the passive leaf and active leaf are open, these two doors close normally if they are not locked. The active leaf is only locked at an angle defined by the cam 3 or by the position of the cam stop 7, since the locking slide 8 comes to rest against the stop 7 and the further closing movement of the active leaf is blocked thereby.

If the inactive leaf moves into the closed position, this leads to the Bowden cable 5 being pulled, and thus to a decoupling between Locking slide 8 and stop 7 and thus to release the active leaf in the direction of its closed position.

The holding angle of the active leaf defined by the position of the stop 7 on the cam plate 3 must be selected so that the passive leaf can run past the fixed leaf when the active leaf is blocked. This is possible with an opening angle of the active leaf in the range of approximately 20 ° to 40 °, and the angle determined by the position of the stop 7 is also selected in this range.

Fig. 3 shows a variant with locking device integrated in the closer linkage, which is characterized above all by easy retrofitting, since practically only the linkage 9, 15 has to be replaced for the purpose of retrofitting.

Here, the cam 3 is rotatably connected to the closer arm 9, which is connected to the axis 10 of the closer 2. The locking device assigned to the cam plate 3 is accommodated in the link arm 15, into which the Bowden cable 5 is inserted. The link arm is connected to the frame in a pivot bearing pin 16, while the closer 2 is fastened to the active leaf 12.

FIG. 4 shows the arrangement according to FIG. 3 in the cut and opened state. It can be seen that the sleeve of the Bowden cable 5 is supported at the entry point of the Bowden cable in the closer arm 15 on the closer arm wall and the Bowden cable itself is connected to the locking slide 8, which is displaceably guided in a corresponding recess in the arm 15 and in the direction of the cam 3 is biased by a compression spring 17.

In addition to the advantage of the simple retrofitting of the solution according to FIGS. 3 and 4 already mentioned, this has an advantageous effect in practice that the Bowden cable 5 fixed to the frame does not have to be laid with a large loop to the normally open closer 2 which is mounted on the door , but that this Bowden cable can run directly from the frame into the linkage or the closer arm 15. Since the arm 15 moves relative to the wall less than the closer 2 mounted on the door 12, the Bowden cable 5 is little stressed and its smoothness is not impaired.

5 to 7 show a variant with stepless retention of the active leaf, using a wrap spring 18 which cooperates with a pivot bearing pin 16 connected in a rotationally fixed manner to the link arm 15 in the form of a spring freewheel. One end 19 of this spring 18 is connected to the bearing sleeve for the link arm 15 connected to the frame 13, while at the other end 20 of the spring 18 the Bowden cable acts, the sleeve of which is supported in a frame-fixed manner.

This support 21 can be seen in FIG. 6. The principle of operation of this stepless holding device is shown in FIG. 7. If the end 20 of the spring 18 is pulled in the direction of the arrow 22 by means of the Bowden cable 5, the bolt 16 and thus the link arm 15 can rotate or pivot freely. If the Bowden cable 5 is relieved, the pivot bearing pin 16 tensions in the direction of the arrow 23 in the spring 18 and is held in place by the lower end 19 of the spring 18 which is firmly connected to the bearing bush.

In the embodiment variant of the invention shown in FIG. 8, the closer is mechanically blocked at an opening angle of the active leaf preferably chosen between 20 ° and 40 ° via a blocking member 26 which prevents the movement of the piston 24 in the closer 2. The blocking member 26 is under the action of a compression spring 17 which prestresses the blocking member 26 in such a way that it projects into the pressure space to the left of the piston 24 when the Bowden cable 5 is relaxed and forms a lock for the piston 24. If the Bowden cable 5 is actuated or pulled, this causes the link 26 to be withdrawn from the pressure chamber and the piston 24 can move in the closing direction, which results in the closer being closed. The closing speed can be adjusted via a valve 28 which is arranged in a connecting channel 27 between the spaces located on both sides of the piston 24. The piston 24 is biased in the usual way in the closing direction by a closing spring 25.

The embodiment according to FIG. 8 is particularly suitable for applications in which the closer is mounted on the frame 13 and not on the door. In this case, the Bowden cable 5 can be laid in a particularly simple manner.

According to a variant not shown in the drawing, the blocking member 26 can also be actuated via a tappet by a cam disk which is arranged on a rod which can be rotated depending on the movement of the passive leaf, or depending on the respective position of the passive leaf between two swivel positions can be reversed. The pivoting of the cam disc then controls the blocking member 26 in a corresponding manner as has been explained in connection with FIG. 8.

9, the movement of the closer piston is controlled as a function of the respective position of the actuator assigned to the passive leaf by a valve 29 which is arranged in a flow channel 27, 27 'between the two pressure chambers of the closer and via rigid or flexible Controls between the closed or open position is reversible. In the closed position, the valve prevents any oil loss between the two pressure chambers and thus prevents any movement of the piston. The valve 29 is biased into the closed position by a compression spring 17. A movement of the closer piston is not possible. If the valve 29 is actuated via the plunger 30 protruding beyond the closer housing 2, this is initially blocked channel opened and the door can run into the closed position. The pushing of the plunger 30 against the force of the spring 17 takes place via a cone 31 which is mounted on a rod 32 which can be displaced relative to the closer 2. The linear displacement of this rod 32 again takes place as a function of the actuator 14 shown in FIG. 1.

A further valve 28 is arranged directly adjacent to the valve 29 in the channel 27, which allows the flow resistance in this channel to be changed and thus the closing speed to be regulated.

The control of a valve 29 housed in the closer 2 via a Bowden cable arrangement 5, 5 'is shown in FIG. 10.

The sleeve 5 of the Bowden cable is supported on an adjusting screw 33 of a screw head 34, which can be screwed into a corresponding threaded hole in the housing 2. The adjusting screw 33 can be used to adjust the Bowden cable.

The valve 29 is biased by the spring 17 into the closed position, in which passage of oil between the channel sections 27 and 27 'is prevented and movement of the closer piston is blocked. By actuating the Bowden cable, the valve body is shifted to the left, by a maximum of the stroke limited by a spacer sleeve 35. As a result, the channel section 27 is connected to the channel section 27 ′, the oil can flow freely through the channel via a downstream regulating valve, and the active leaf can close in a damped manner. This variant is characterized by good integrability in a door closer, compactness and easy adjustability.

While the mechanical design variants of the invention are characterized by a particularly simple construction and easy retrofitting, and in these embodiments there is also no so-called creeping of the closer due to low leakage of the hydraulics when the closer is determined, i. H. A slow closing of the respective door is reliably prevented, the training variants with a valve integrated in the closer and the blocking element have the additional advantages that the compact design of the closer housing is retained, no complicated installation on site when the double-leaf door, in particular fire protection door, is required , since the closing sequence control is already integrated in the closer and that contamination of a control element or control valve is made more difficult by the integrated design, which leads to a maintenance-friendly overall arrangement.

Claims (10)

1. Apparatus for controlling the closing sequence of double doors, the apparatus comprising at least one door closer (2) associated with the passage door (12) and a control arrangement which cooperates with the door closer (2) for the passage door (12) and is actuated via the standing door (11), the control arrangement consisting of a positioning member (14), which is arranged in the region of the pivot axle side of the standing door (11) and is movable by the standing door (11) between first and second switching positions, and of a connecting member (5) which cooperates with a control member (8, 18, 26, 29, 30), which is connected with the positioning member (14) and which mechanically transmits the movement of the positioning member to the passage door ; characterised in that the connecting member (5) acts on the control member (8, 18 ; 26, 29, 30) of the door closer (2) or of its linkage arm (9, 15) ; and in that the passage door end of the connecting member (5) acts in one of the two switching positions of the positioning member (14) on the control member (8, 18, 26, 29, 30) of the door closer (2) or-of the linkage arm (9, 15) which blocks the door closer (2) or its linkage arm (9, 15) during the closing movement.

2. Apparatus in accordance with claim 1, characterised in that the connecting member which mechanically transmits the movement of the positioning member is a bar (32) which is rotatably or displaceably journalled in the door case (13).

3. Apparatus in accordance with claim 1 or claim 2, characterised in that the connecting member which mechanically transmits the movement of the positioning member consists at least in part of a Bowden cable (5, 5') ; and in particular that a control member (8 ; 18 ; 29) associated with the Bowden cable (5, 5') is biased into the blocking position by means of a spring (17).

4. Apparatus in accordance with claim 3, characterised in that the passage door end of the connecting member which mechanically transmits the movement of the positioning member is provided with an eccentric element or a cone (31) for actuating a push rod (30) which directly or indirectly blocks the movement of the closer.

5. Apparatus in accordance with claim 3, characterised in that a cam disk (3) is arranged, in the connection hinge of the two arms (9, 15) of the closer linkage, with the cam disk (3) having an abutment (7), being rotatably fixedly connected to the arm (9) of the linkage adjacent the closer, and cooperating with a latch bolt (8) guided in the other arm (15) of the linkage, and with the latch bolt (8) being biased by a spring (17) and being connected to the Bowden cable (5), the sleeve of which is braced against the arm (15).

6. Apparatus in accordance with claim 3, characterised in that a wrap spring (18) is arranged on a pivot pin (16) which is rotationally fixedly connected with one arm (15) of the closer and supported in a bearing at the door case end, with one end (19) of the wrap spring (18) being connected with the door case bearing, and with the other end (20) of the wrap spring being connected with the Bowden cable (5), the sleeve of which is braced at the door case end, and being loadable in the sense of winding up the wrap spring (18).

7. Apparatus in accordance with claim 3, characterised in that a door closer (2), which is in particular to be mounted on the door case, has a bore which opens into the piston guiding chamber, with a blocking member (26) being provided in this bore and being movable in dependence on the positioning member (14) via the mechanical connecting member, in particular via the Bowden cable (5, 5'), into the path of movement of the piston (24) to block it.

8. Apparatus in accordance with claim 3, characterised in that a blocking valve (29) is provided in a bore (27, 27') which connects together the chambers provided on the two sides of the closer piston (24), in particular directly adjacent to a valve (28) provided in the bore (27) for adjusting the damping of the door closer ; with the blocking valve (29) being actuatable either via a push rod (30) which projects beyond the housing of the closer, or directly via the cable (5') of the Bowden cable (5) which is attached to the closer housing via a threaded nipple (34).

9. Apparatus in accordance with claim 3, characterised in that the control member comprises of a latch bolt (8), which is arranged in a guide housing (4), is biased by a spring (17), is connected to the Bowden cable (5, 5'), and cooperates with a blocking member (3, 36) secured to the axle (10) of the closer.

10. Apparatus in accordance with claim 9, characterised in that the blocking member comprises a cam disk (3) having an abutment (7).

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