DE19951610A1 - Closure sequence control for two-paneled door involves door having stand panel and passage panel automatically closed by door closer, stop device being effective between panels - Google Patents

Abstract

The closure sequence control for a two-paneled door involves the door having a stand panel and a passage panel automatically closed by a door closer. A stop device is effective between the panels, which in the opened position of the stand panel blocks the passage panel in the closed position, while in the closed or virtually closed position of the stand panel the blocking is released. The stop device (3) is formed by a pneumatically operable unit, effectively connected with a pneumatic stop valve (9) operated by the stand panel (1). The pneumatically operable unit has a pneumatic cylinder (5), in which slides a piston (6) with a connecting rod (7). The connecting rod is effectively connected with a slide piece (11) moved by the passage panel (2).

Description

The invention relates to a closing sequence control for a door closer self-closing double-leaf door that has a passive leaf and a corridor has wing, according to the preamble of claim 1.

In the case of double-leaf doors, closing sequence controls are required if in the case of tightly closing doors, the door leaves overlap in the middle with door rebates pen. The inactive leaf forms a stop for the door with its door rebate rebate the active leaf so that the active leaf is always on when the door is closed Inactive leaf rests. Accordingly, the stand must always be in the closing process leaf must be closed before the active leaf at least the end of the closing gangs executes. In the case of fire protection doors in particular, the double-leaf door is required, accordingly, closing doors are required for such doors controls necessary so that the logical closing of the double leaf Door is ensured.

Mechanical closing sequence controls are described, for example, by the publication Chen publications DE 43 08 560 A1, DE 33 36 739 C2 and DE 36 04 091 C2 known. Here is a slide that is operatively connected to the active leaf piece with an sawtooth extension, where  in this saw toothing engages a corresponding counter toothing, which from Inactive leaf is controlled such that when the inactive leaf is not closed the Counter toothing engages in the saw toothing and thereby the formed Locking device prevents at least a complete closing of the active leaf different. To ensure that the correct closing sequence is observed, the active leaf is only allowed to do so close that the passive wing can still pass and the right one Occupies the closed position. The locking device is then released and the gear sash can be closed by the door closer.

A hydraulic closing sequence control for a double-leaf door with overlap DE 32 21 534 A1 shows door folds. This closing sequence control is with the door closer arranged cooperatively, the to the active leaf orderly door closers for hydraulic damping of the closing movement with a hydraulic cylinder which is provided by a piston in a pressure chamber and a pressure-less room is divided and a Dros between these rooms selkanal is provided, in which an actuatable from the passive leaf shut-off valve integ is. The check valve is actuated by a with the passive leaf cooperating release device in the area of the passive leaf in the door frame men is arranged and acts on the check valve via a Bowden cable. The spatially separate arrangement of the check valve and integrated in the door closer the release device requires a lot of assembly and maintenance. The Arrangement of the check valve in the hydraulically damped door closer requires that this closing sequence control is not arranged independently of the door closer that can.

The object of the present invention is to provide a closing sequence control for To create double-leaf doors that are easy to assemble and assemble.

This object is achieved according to the invention in that the between the inactive leaf and the active leaf effective locking device by a pneu matically actuated unit is formed, which is actuated by the passive leaf has pneumatic shut-off valve. The pneumatically operated unit is preferably by a pneumatic cylinder and a sliding therein and with  a piston rod connected piston formed, the piston rod with egg Nem component moved by the active leaf, for example with a slide, in Active connection is established. Such a closing sequence control is completely independent can be installed depending on the door closer. Accordingly, there is great freedom of movement guaranteed with regard to the selection and arrangement of the door closers.

This results in a locking device that takes up particularly little installation space created that in the pressure limited by the pneumatic cylinder and piston a feed channel that can be shut off by a check valve and a feed channel that Check valve operated drain channel opens. It is advantageous if the feeder box nal arranged in the piston and connected to an annular space, which is from the Kol benstange and the pneumatic cylinder is limited, which in this feeder check valve located only the inflow of air from the annulus allowed in the pressure room.

For safety reasons, a pressure relief valve is arranged in the cylinder base ches with the locking device in effect and stronger on the active leaf Closing force opens and connects the pressure chamber with the atmosphere. So that is ensures that there are none due to strong closing forces exerted on the active leaf Parts of the closing sequence control can be damaged.

The closing sequence control is simple in the different widths of Double-leaf doors adaptable when the check valve is connected via a connection line device is connected to the pressure chamber of the pneumatic cylinder, the cylin the bottom and the valve block opposite connections for the Have connecting line. By a length of the adjusted to the door width Connection line can thus the closing sequence control simply the respective Installation situation to be adjusted.

So that the last closing path of the active leaf without significant resistance from Door closers can be executed and the two can be closed properly wing door is guaranteed, a bypass line is installed in the pneumatic cylinder ordered, which opens into the pressure chamber in the area of the cylinder bottom and at  almost retracted piston ver the pressure chamber with the annular space air-guiding binds.

The check valve, which forms a structural unit with the locking device, is at an embodiment with a horizontally running actuating pin verses hen that is actuated by the passive leaf during the closing movement. With a wide one Ren version, the check valve has a vertical and with a Roll provided actuating pin with a corresponding inclined surface of the passive leaf cooperates.

So when opening the active leaf and when the pneumati is closed between the shut-off valve in the pressure chamber, a pressure is generated which is higher than the At atmospheric pressure, an embodiment is provided, the piston on which the Pressure chamber facing side has a smaller effective area than on the side facing the annulus.

To especially at low opening angles of the active leaf and not ge closed passive leaf to ensure a perfect effect of the locking device ensure a switching element is provided that either with the check valve forms a unit or interacts directly with the passive leaf, whereby a compressed air source, such as a compressed air generator or a compressed air tank with the Pressure chamber is connectable. Advantageously, it is from the compressed air source to the Piston applied force equal to or slightly less than the force exerted by the door closer of the active leaf in the area of a small opening angle to the col ben bar is exercised. So only during the opening movement of the active leaf the compressed air source can be connected to the pressure chamber, the piston rod stands with a switch for a pneumatic valve depending on the direction of movement Active connection. The switch is preferably in series with the switching element switched so that the connection between the Pressure chamber and the compressed air source is interrupted.

In preferred embodiments, the active leaf is with a sliding arm door closer and the passive leaf are equipped with a sliding arm door closer by the door closer housing on the door wing and on the fixed hori  zontal upper frame spar the slide rail of the door closer to go through the common slide is arranged. The pneumatic unit is in arranged the slide rail. It is actuated by the passive leaf telbar or through the glider of the leaf door closer. The glider of the passage wing door closer is used for blocking with the pneumatic genom men.

Based on the advantageous embodiments shown in the drawing The invention is explained in more detail below and the mode of operation is described. It shows:

Figure 1 shows a pneumatically acting closing sequence control for a two-leaf door in a schematic representation.

Fig. 2 shows an arrangement of a check valve with a horizontally extending actuation pin and its actuation by the passive leaf;

Figure 3 shows a check valve with vertical operating pin verlaufendem and its interaction with the fixed leaf.

Fig. 4 is a closing sequence control connected to a compressed air source.

The embodiment of a pneumatic closing sequence shown in Fig. 1 control for a double-leaf door, the fixed leaf 1 is overlapped in the center with the moving leaf 2 by door folds, includes a blocking means 3, which comprises a pneumatic cylinder 5 and a sliding therein and a piston rod 7 ver connected and on the inner wall of the pneumatic cylinder 5 sealingly guided piston 6 . The piston rod 7 slides in a piston rod guide 12 and carries at its end opposite the piston 6 a slide 11 which is axially movably guided in a slide rail 10 and is operatively connected to the active leaf 2 via a slide arm 22 . A pressure chamber 8 is limited by the pneumatic cylinder 5 , the piston 6 and a cylinder base 17 and is connected to an annular space 23 located between the pneumatic cylinder 5 and the piston rod 7 via a check valve 13 located in the piston 6 , which opens towards the pressure chamber 8 . In addition, a bypass line 4 connects the pressure chamber 8 to the annular space 23 having atmospheric pressure from a certain entry path of the piston 6 into the pneumatic cylinder 5 . The mouth of the by-pass line in the pneumatic cylinder is arranged in such a way that a correct closing sequence is guaranteed in any case from this particular drive-in path, that is to say that the fixed leaf 1 always comes into the closed position before the active leaf 2 . So that at high pressure in the pressure chamber 8 due to a very high force exerted on the active leaf 2 in the closing direction, for. B. by manually pressing the active leaf 2 , no parts of the closing sequence control are damaged, an overpressure valve 16 opening to the atmosphere is seen in the cylinder base 17 . Furthermore, the pressure chamber 8 has a drain channel 15 which is connected by a connecting line 18 to a valve block 19 , this Ven tilblock 19 is arranged in the slide rail 10 and carries a pneumatic check valve 9 , which acts on the passive leaf 1 via an actuating pin 24 and only connects the pressure chamber 8 to the atmosphere when the inactive leaf 1 is closed. The axial arrangement of the check valve 9 arranged in the valve block 19 to the standing wing 1 can easily be adapted by connecting lines 18 of different lengths to the respective installation situation, for which purpose the connections 20 and 21 on the cylinder bottom 17 and on the valve block 19 are used.

If the inactive leaf is not yet closed 1, the fixed leaf 1 does not contact the actuating pin 24, and the check valve 9 closes the pressure chamber 8 to the atmosphere. The open active leaf 2 , which is connected via the sliding arm 22 and the sliding piece 11 to the piston rod 7 , builds a pressure in the pressure chamber 8 until the piston 6 is applied by the closing force not exerted by the door closer via the piston 6 There is a balance of forces and the further closing movement is prevented. The passive leaf 1 is not interrupted in its closing movement and touches the actuating pin 24 of the pneumatic shut-off valve 9 shortly before the closing end, so that it opens and the compressed air in the pressure chamber 8 through the discharge duct 15 , the connecting line 18 and the ducts in the valve block 19 can flow into the atmosphere. Thus, the door closer can close the active leaf 2 , whereby from a predetermined closing angle of the active leaf 2, the piston 6 passes over the left opening of the bypass line 4 and connects the pressure chamber 8 to the annular chamber 23 and thereby causes a faster pressure reduction in the pressure chamber 8 , so that the last one Closing angle of the active leaf takes place without resistance by the locking device 3 . When the passive leaf 1 is closed, the pneumatic blocking valve 9 is thus opened and the active leaf 2 is free of the blocking effect of the blocking device 3 , so that only the door closer is effective. The opening of the active leaf 2 is set by the closing sequence control an extremely low resistance, which is caused by the inflow of air into the pressure chamber 8 , which is done via the check valve 13 , which responds to small pressure differences and, when the passive leaf is closed, also via the opened pneumatic shut-off valve 9 .

The bypass line 4 also serves to avoid malfunctions when opening a moving leaf 2 , the door closer of which is arranged in the so-called counter hinge assembly: due to the angular relationships between the axis of rotation of the sliding arm in the slider, the axis of rotation of the door hinges and the axis of rotation of the closer shaft, it is characteristic of such a door closer arrangement, that the sliding piece 11 when opening the door leaf 2 first moves in the closing direction before it reaches a so-called dead center and then only moves in the opening direction. Applied to the present construction according to FIG. 1, this means that the pressure chamber 8 first shrinks when the active leaf 2 is opened . In the event that the opening movement of the passive leaf 1 is started immediately after initiation of the opening movement of the active leaf 2 and the blocking valve 9 thus blocks before the slider 11 has reached the aforementioned dead center, this would mean that an excess pressure would arise in the pressure chamber 8 that would impede the opening movement of the active leaf 2 . The bypass line 4 prevents this overpressure from arising.

On the passive leaf 1 , the closing sequence control has no influence on the opening and closing movement.

An arrangement of the pneumatic shut-off valve 9 corresponding to FIG. 1 is shown in FIG. 2 in an enlarged representation and in a section running transversely to the slide rail. In the valve block 19 of the cooperating with the stationary wing 1 operating pin 24 is displaced against the force of a spring arranged and acting on a spring-loaded valve body 26, whereby the pneu matic check valve opens. 9 As a result, the channels present in the valve block 19 and thus also the pressure chamber of the blocking device are connected to the atmosphere. To further devices that are to be switched electrically, for example, depending on the position of the passive leaf, the check valve 9 is combined with a switching element 28 , which preferably closes a circuit when the standing leaf 1 is open.

A further arrangement of the pneumatic shutoff valve 9 is shown in FIG. 3, the actuating pin 24 running vertically. This actuating pin 24 carries a roller 25 and thus acts on an inclined surface 27 connected to the passive leaf 1 . Also in this check valve 9, the valve body 26 is raised with almost closed inactive leaf 1 by the actuating pin 24 and held at complete charge schlossenem inactive leaf 1 in the full opening, so that in this to stand the pressure chamber of the locking device is connected to the atmosphere. In this embodiment of the check valve 9 , a switching element 28 can be integrated for a circuit.

The embodiment according to FIG. 4 differs from that according to FIG. 1 in essence by a switchable compressed air source 30 which is connected by a pneumatic valve 31 to the pressure chamber 8 when the stand is opened or when the stand is opened. As a result, the pressure in the pressure chamber 8 is increased when the active leaf is open when the passive leaf is open, so that the force of the door closer can only exert a slight closing movement of the active leaf until the piston 6 has a balance between the closing force of the door closer and the pressure force in the pressure chamber. The switching element 28 integrated with the pneumatic shutoff valve 9 in the valve block 19 is used for this connection of the compressed air source 30 . So that when the passive leaf is open, the pneumatic valve 31 only creates a connection between the compressed air source 30 and the pressure chamber 8 during the opening process of the active leaf, a switch 29 which acts in a direction dependent on the direction of movement is also provided in the piston rod guide 12 and has a clamping ring arranged on the piston rod 7 , which is axially movable in a groove of the piston rod guide 12 and closes the circuit only in the opening movement of the active leaf. The switch 29 and the switching element 28 are connected in series, as a result of which the connection between the compressed air source 30 and the pressure chamber 8 can be established only when the passive leaf is open and during the opening process of the active leaf by the pneumatic valve 31 .

To increase the pressure in the pressure chamber 8 , when opening the active leaf and not yet closed inactive leaf, a pneumatic translation can also be provided with a type of step piston, the effective piston area to the annular space 23 being larger than the effective piston area in the pressure chamber 8 . For example, this can be achieved by differently strong piston rods. Furthermore, only a locking device with a stronger effect from a certain closing angle of the active leaf can be created in that the piston is provided with a cylindrical projection protruding into the pressure chamber, which plunges into a corresponding hole in the cylinder bottom from a predetermined closing angle of the active leaf.

Reference list

1

Inactive leaf

2nd

Active leaf

3rd

Locking device

4th

Bypass line

5

Pneumatic cylinder

6

piston

7

Piston rod

8th

Pressure room

9

pneumatic shut-off valve

10th

Slide rail

11

Slider

12th

Piston rod guide

13

check valve

14

Feed channel

15

Drain channel

16

Pressure relief valve

17th

Cylinder bottom

18th

Connecting line

19th

Valve block

20th

Connection in the cylinder bottom

21

Connection in the valve block

22

Sliding arm

23

Annulus

24th

Actuating pin

25th

role

26

Valve body

27

Sloping surface

28

Switching element

29

switch

30th

Compressed air source

31

Pneumatic valve

Claims (14)

1.Closing sequence control for a double-leaf door which closes automatically by means of a door closer and has a passive leaf and a active leaf, a locking device being active between the active leaf and the passive leaf, which blocks the active leaf in the closing direction in the open position of the passive leaf, while in the closed or almost closed position In its position of the passive leaf, the blocking is released, characterized in that the locking device ( 3 ) is formed by a pneumatically operable unit, which is operatively connected to a pneumatic blocking valve ( 9 ) actuated by the passive leaf ( 1 ). 2. Closing sequence control according to claim 1, characterized in that the pneumatically actuated unit by a pneumatic cylinder ( 5 ) and a sliding therein and with a piston rod ( 7 ) connected piston ( 6 ), the Kol benstange ( 7 ) with one of the active leaf ( 2 ) moving component (slider 11 ) is in operative connection. 3. closing sequence control according to claims 1 and 2, characterized in that in a by the Pneumatikzy cylinder ( 5 ), a cylinder bottom ( 17 ) and the piston ( 6 ) limited pressure chamber ( 8 ) by a check valve ( 13 ) lockable supply channel ( 14 ) and an outlet channel ( 15 ) which can be actuated by the shut-off valve ( 9 ) opens. 4. Closing sequence control according to claims 2 to 3, characterized in that the feed channel ( 14 ) in the Kol ben ( 6 ) is arranged and one of the piston rod ( 7 ) and the pneumatic cylinder ( 5 ) limited annular space ( 23 ) with the pressure chamber ( 8 ) connects and the check valve ( 13 ) located in the feed channel ( 14 ) allows the inflow of air from the annular space ( 23 ) into the pressure space ( 8 ). 5. Closing sequence control according to one or more of claims 2 to 4, characterized in that in the cylinder base ( 17 ) of the pneumatic cylinder ( 5 ) a pressure relief valve ( 16 ) is arranged, which with the locking device ( 3 ) and on the active leaf ( 2 ) exercised strong closing force connects the pressure chamber ( 8 ) with the atmosphere. 6. Closing sequence control according to one or more of claims 2 to 5, characterized in that the check valve ( 9 ) is preferably connected via a connecting line ( 18 ) to the pressure chamber ( 8 ) of the pneumatic cylinder ( 5 ), preferably providing that the cylinder base ( 17 ) and a valve block receiving the control valve ( 19 ) have mutually opposite connections ( 20 , 21 ) for the connecting line ( 18 ). 7. closing sequence control according to one or more of claims 2 to 6, characterized in that in the pneumatic cylinder ( 5 ) ei ne bypass line ( 4 ) is arranged, which in the region of the cylinder bottom ( 17 ) of the pneumatic cylinder ( 5 ) in the pressure chamber ( 8 ) opens and with the piston ( 6 ) almost retracted, the pressure chamber ( 8 ) is connected to an air-conducting space, preferably the annular space ( 23 ), in an air-conducting manner. 8. closing sequence control according to one or more of claims 1 to 7, characterized in that the check valve ( 9 ) has a ho rizontal extending actuating pin ( 24 ) which is actuated by the passive leaf ( 1 ) during its closing movement. 9. closing sequence control according to one or more of claims 1 to 7, characterized in that the check valve ( 9 ) has a vertically extending and provided with a roller ( 25 ) actuating pin ( 24 ) with a corresponding inclined surface ( 27 ) of the standing wing gels ( 1 ) is arranged to cooperate. 10. Closing sequence control according to one or more of claims 4 to 9, characterized in that the piston ( 6 ) on the side facing the pressure chamber ( 8 ) has a smaller effective area than on the effective area facing the annular space ( 23 ). 11. Closing sequence control according to one or more of claims 1 to 9, characterized in that when the inactive leaf ( 1 ) is open by a switching element ( 28 ) which forms a structural unit with the check valve ( 9 ) or cooperates directly with the inactive leaf ( 1 ), a compressed air source ( 30 ), for example a compressed air tank or a compressed air generator, can be connected to the pressure chamber ( 8 ). 12. Closing sequence control according to claim 11, characterized in that the force exerted by the compressed air source ( 30 ) on the piston ( 6 ) is the same or slightly smaller than that of the door closer in the area of a small opening angle of the active leaf ( 2 ) on a piston rod ( 7 ) transmitted power. 13. Closing sequence control according to claims 11 and 12, characterized in that the piston rod ( 7 ) is operatively connected to a switch ( 29 ) acting in the direction of movement for a pneumatic valve ( 31 ). 14. Closing sequence control according to claim 13, characterized in that the switching element ( 28 ) with the switch ( 29 ) is connected in series, whereby the pneumatic valve ( 31 ) with the inactive leaf ( 1 ) the connection between the pressure chamber ( 8 ) and the compressed air source ( 30 ) interrupts.