EP1620626A1

EP1620626A1 - Hydromechanical closing sequence controller

Info

Publication number: EP1620626A1
Application number: EP04700976A
Authority: EP
Inventors: Falko Schweitzer
Original assignee: Dorma Deutschland GmbH
Current assignee: Dormakaba Deutschland GmbH
Priority date: 2003-01-09
Filing date: 2004-01-09
Publication date: 2006-02-01
Anticipated expiration: 2024-01-09
Also published as: EP1620626B2; ES2295813T3; ATE376113T1; DE502004005267D1; DK1620626T3; EP1620626B1; WO2004063508A1

Abstract

The invention relates to a hydromechanical closing sequence controller for double-leaf doors, comprising a fixed leaf and a moving leaf, whereby both the fixed leaf and the moving leaf are each operated by a hydraulic action door closer (1, 2), each of which is provided with an axis (3). According to the invention, a hydromechanical closing sequence controller which guarantees a secure closing sequence which is achieved with the least possible number of components of simple construction can be achieved, whereby a cam wheel (5) is arranged on the axis of the door closer for the fixed leaf, cooperating with a valve (7) which controls the door closer of the moving leaf, or a slide piece on the fixed leaf cooperates with the valve (7) which controls the door closer on the moving leaf.

Description

Title: Hydraulic-mechanical closing sequence control

description

The invention relates to a hydraulic-mechanical closing sequence control for double-leaf doors.

Such a closing sequence control is known from EP 0 141 902. There, an actuator interacting with a fixed leaf actuates a Bowden cable, which controls a valve arranged on a moving leaf. If the valve is opened via the Bowden cable, the hydraulic fluid can flow out of the locking piston and thus ensure that the passive leaf is always closed before the active leaf.

With this construction, the transmission element, namely the Bowden cable, has a great influence on the function. If the Bowden cable fails, z. B. by wrong setting, wrong length of the Bowden cable, loosening the cable clamps, etc., it happens that the correct closed position of the folded door leaf (active and passive leaf) is not maintained. However, since closing sequence controls are usually used in door systems in fire compartments, there is an increased risk potential if the double-leaf door is not closed correctly.

Another closing sequence control is known from DE 32 04 975 A1, in which a control valve is provided which is connected directly or indirectly to the passive leaf. The axis of a door closer for the passive leaf is provided with a toothed wheel which meshes with a toothed rack arranged in a piston, so that a rotation of the axis of the door closer is converted into a translatory movement of the piston. The piston controls the flow of hydraulic fluid on the active leaf

BESTATIGUNGSKOPIE and thus ensures that the active leaf cannot be closed in front of the passive leaf.

The object of the present invention is therefore to further develop the state of the art and to create a hydraulic-mechanical closing sequence control which ensures a secure closing sequence of a double-leaf door, but achieves this with as few components as possible and also of simple construction. Furthermore, the closing sequence control should be retrofittable.

This object is achieved by the features of claim 1.

According to the invention, the hydraulic-mechanical closing sequence control is for double-leaf doors that have a passive leaf and a active leaf, both the fixed leaf and the active leaf being acted upon by a hydraulically actuated door closer or drive, which is provided with an axis on which a linkage engages. which, on the other hand, cooperates with a slide rail via a slide or a roller, characterized in that a cam disk is arranged on the axis of the door closer for the passive leaf, which cam cooperates with a valve which controls the door closer of the active leaf. In addition to the above-mentioned version of an overhead door closer with a slide rail, a version with scissor linkage can also be selected.

As a result of this configuration, a closing sequence control is provided with a few and simply constructed components, which ensures a secure closing sequence. The design also has the advantage that the entire closing sequence control is very compact and can therefore be easily and conveniently installed and removed, e.g. B. for a repair or for maintenance purposes. Since it consists of only a few and relatively small individual parts, it is not just the storage of the entire closing sequence control, but ^'the provision of individual or spare parts simple and straightforward and requires little space. For maintenance and repair work, the closing sequence control according to the present invention can also be installed or removed without problems because of its low weight. Due to the arrangement of the valve on the passive leaf, a higher reaction speed is also achieved. The entire closing sequence control is inexpensive, can be easily installed in a system carrier and enables easy adjustment. Pre-assembly is also possible. Through the direct control, without the use of intermediate links, the position of the door leaf can be recognized directly. Furthermore, there is no interference in the hydraulic circuit of the active leaf by elements of the door closer of the passive leaf.

Door closers are understood to mean both classic door closers and door drives with an electrohydraulic opening aid and electrohydraulic door drives.

The use of the proposed closing sequence control is also easily possible with floor door closers. In such a case, the cam disc is mounted on the axis of the active leaf door closer and the connection to the valve is established from the passive leaf door closer via corresponding hydraulic lines.

It goes without saying that, according to this invention, door drives also come under the term door closer.

The dependent claims contain advantageous developments of the invention. According to an advantageous embodiment, the door closer of the active leaf is controlled via a hydraulic connection. This ensures simple control and is also extremely inexpensive.

According to one embodiment variant, lines which can preferably be integrated in a system carrier are suitable as the hydraulic connection. For example, according to an advantageous embodiment, the lines can be extruded into the system carrier during manufacture. This is also a visually appealing solution. Instead of a system carrier, a slide rail can also be used, in which, for. B. additional chambers are available or two hydraulic lines are installed in one chamber.

According to another embodiment variant, the hydraulic connection consists of hoses.

According to an advantageous embodiment, the closing sequence control according to the invention is constructed such that the valve allows unrestricted movement of the active leaf in the open state and blocks movement of the active leaf in the closed state.

In order to ensure that the passive leaf is always closed in front of the active leaf, according to an advantageous embodiment the valve is only opened in one single position of the cam disc, but is closed in all other positions. This open position is given when the passive leaf remains in its correct closed position or from a certain small opening angle of the passive leaf, which is always smaller than the opening angle of the active leaf. With the exception of this very specific position of the passive leaf, the active leaf can always be moved. In this way, the desired closing sequence control is ensured with the simplest of means. As soon as the passive leaf and the active leaf are opened (both at the same time), only one can the passive leaf can be moved. The active leaf remains in its position and can only be moved again when the passive leaf has reached its closed position or is just before the closed position.

According to an advantageous development, the valve used in the closing sequence control according to the invention is provided with a valve body from which a spring-loaded pin protrudes. This pin is pressed against the cam disk in an advantageous manner by a spring. This ensures that the pin is always in contact with the cam disc, thus ensuring reliable control of the valve.

The valve is advantageously closed when the pin is engaged and opened when the pin is disengaged. Characterized in that a cylinder located in a piston chamber, which is operatively connected via its toothing to the output axis of the door drive on the aisle side, has a pressure chamber with hydraulic fluid on each of its end faces within the piston chamber and these two pressure chambers each on one of the The valve, which is mounted on the actuator of the passive leaf, is connected to leading lines, depending on the position of the valve (open and closed), a blocking of the piston on the aisle side or free movement can be effected.

While in a first embodiment the spring-loaded pin of the valve interacts directly with the cam disk, in a second embodiment a rotary lever is interposed. The pin of the valve presses on a pressure plate which is arranged on one end of the release lever, while on the other side the one-armed release lever is pivoted. Furthermore, the release lever has a projection which is in direct or indirect contact with the cam disc. To keep friction losses as low as possible, there is a pivot bearing on the projection, e.g. B. a ball bearing, which rests on the cam. The valve can be embedded within a slide rail and actuated by the corresponding slide on the passive leaf. Such an arrangement can be carried out both with a closing and with an opening valve. Furthermore, it is possible for the valve to be arranged within a further chamber of the slide rail, in which the connecting lines also lead simultaneously to the closer or the device of the active leaf.

Furthermore, the above-mentioned closing sequence control can be used not only with floor closers or overhead door closers, but also with interior door closers that are installed inside the door leaf or also with frame door closers that are located above the door inside the frame or the door frame. In the case of a version within a closing sequence arrangement for floor door closers, the cable routing can also take place within a separate channel.

Further details, features and advantages of the invention result from the following description of a preferred embodiment with reference to the drawings.

Show it:

Figure 1: An overall view of the closing sequence control according to the invention;

Figure 2: the details "X" and "Y" from Figure 1;

Figure 3: the detail "X" in a first embodiment of a valve control; Figure 4: a valve used in the closing sequence control according to the invention in an enlarged view;

Figure 5: a second embodiment of the valve control;

FIG. 6: a hydraulic circuit diagram of the closing sequence control;

Figure 7: a third embodiment of the valve control.

The closing sequence control according to the invention is suitable for a double-leaf, folded door, in which a moving leaf and a passive leaf are each connected to a door frame or the door leaves via a swivel arm 4. The active leaf, the passive leaf, the door frame and the two swivel arms 4 are general prior art and are therefore not shown or explained in more detail here.

The closing sequence control according to a first preferred embodiment of the present invention has two hydraulically operated door closers 1, 2, one of which acts on the passive leaf and the other on the active leaf. The two door closers 1, 2 are constructed essentially the same. They each have an axis 3 on which a swivel arm 4 is arranged, which is movably connected to the active leaf or the fixed leaf via a slide piece or a roller and a slide rail.

The door closer 1 cooperating with the passive leaf additionally has a cam disc 5 on its axis 3. This cam disk 5 is essentially round and has an indentation 6 at one point. The cam disc 5 can also be subsequently connected to the axis 3. The connection is non-positive and positive. A valve 7 attached to the door closer 1 interacts with the cam disk 5. The valve 7 has a valve housing 8 from which a pin 9 protrudes, which is under the action of a spring 10 which tries to push the pin 9 out of the housing 8.

Lines or hoses 11 are connected to the valve 7 and are connected at their other end to the hydraulic circuit of the door closer 2 for the active leaf. The lines or hoses 11 can also be extruded directly into a system carrier 12 during manufacture.

The construction of the valve 7 is selected so that the valve 7 is open when the pin 9 is pressed out of the housing 8. The force for pushing out the pin 9 is realized via the spring 10. In this position, the active leaf can be moved freely without restriction. When the pin 9 of the valve 7 protrudes from the housing 8, as shown in Figures 2, 3 and 4, the valve 7 is open. In this position, movement of the hydraulic fluid in the door closer 2 of the active leaf is not prevented, with the result that the passive leaf located in the closed position can be moved freely.

The function of the closing sequence control according to the invention is now explained below.

In Figure 2, the cam disc 5 is shown in a position in which the pin 9 protrudes from the housing 8 of the valve 7. In this position, valve 7 is open. As a result, a flow of the hydraulic fluid in the door closer 2 for the active leaf is not prevented.

If the passive leaf is opened after the active leaf, the cam disk 5 rotates, the pin 9 emerges from the indentation 6 and is pressed into the housing 8 of the valve 7. In this position the valve is 7 closed. The consequence of this is that a flow of the hydraulic fluid in the door closer 2 for the active leaf is no longer possible and the active leaf can therefore no longer be moved.

The active leaf can only move again and is closed via the drive 2 when the passive leaf is in its closed position or is just before it and the valve 7 releases the flow through the lines 11 to the drive 2 of the active leaf, so that in it is ensured in every case that the passive leaf is closed in front of the active leaf. This is particularly important where the passive leaf and the active leaf are each equipped with a rebate and the leaves are in a fire zone.

FIG. 5 shows a variant of the actuation of the pin 9 of the valve 8. The valve 7 is in turn a valve which is connected to the pressure chambers of the door closer of the active leaf by connecting lines via the connecting piece 18. In this exemplary embodiment, the pin 9 does not interact directly with the cam plate 5. Rather, a release lever 14 is provided in between in order to minimize loads and friction losses when switching the valve 7 from “to” to “on or from“ to to “closed”. The trigger lever 14 is pivoted at a pivot point 15 and designed as a one-armed lever. At the end opposite the fulcrum 15, a pressure plate 17 is arranged, which forms a pressure surface for the pin 9. A ball bearing 16 mounted within the lever is in direct contact with the cam plate 5. If the cam disc 5 is now rotated due to the axis 3, the release lever 14 is actuated due to the lowering present within the cam disc or also due to a projection, which in turn causes the valve 8 to be actuated via the pin 9. The cam disc 5 is arranged on the axis 3 of the door closer of the active leaf so that the setting can be made continuously. When the valve 8 is precisely adjusted and thus triggered, the cam disc 5 is fixed accordingly on the axis 3.

In order to be able to easily assemble the assembly consisting of valve 7 and release lever 14, it is located on a mounting lever 13 which is fastened to the door closer of the active leaf in a non-positive and positive manner.

Another way to control the door closer of the active leaf via the passive leaf is that, for. B. the valve 7 can be installed within a slide rail 34. In order to operate the valve 7 with the pin 9, z. B., as can be seen from FIG. 7, press an edge 36 of a slide 35 when moving against the pin 9 and thus actuate the valve 7. Depending on the approach direction, a valve can be used that closes or opens when actuated. However, an opposite function is also conceivable.

In addition to the above-described designs of a door closer 1 and 2, a hydraulic mechanical drive can of course also be used according to the invention. The important thing here is whether the drive should only open the door and the closing process is then accomplished via a spring located within the drive, or the drive will also operate for the door closing process.

FIG. 6 shows a functional principle for a hydraulic circuit diagram of a active leaf and fixed leaf drive with a closing sequence control of the type according to the invention described above. A piston 25 is displaceably mounted within a piston space (not specified). While a compression spring 19 is present on the right-hand side in FIG. 6, there is no spring on the opposite side of the piston 25. Equal- A pressure chamber 20 on the pump side and a pressure chamber 33 on the spring side are formed on each side of the piston 25 in good time. In the area of axis 3 is z. B. an oil tank 32. The pressure chamber 20 is connected to the oil tank 32 via a line in which there is a suction valve for the opening direction. At the same time, however, the pressure chamber 20 is also connected to the oil tank 32 via a solenoid valve 31 via a line in which there is a closing damping valve 21. In parallel to the closing damping valve 21, a closing speed valve 22 is provided with an outlet that does not end in the pressure chamber 20. The pressure chamber 20 has a connection with a pump check valve 27 contained therein to a pump 28 with a motor 29. A pressure relief valve 30 is also present on the pump 28. The hydraulic medium delivered by the pump 28 from the oil tank 32 is pumped into the pressure chamber 20 (pump side) via the pump check valve 27 and thus causes the piston 25 to be displaced within the cylinder against the compression spring 19.

The pressure chamber 33 on the spring side is also connected to the oil tank 32 by a hydraulic line. An opening speed valve 23 and an opening damping valve 24 are arranged in parallel within this line.

The construction of the device for the active leaf drive is analogous to that of the passive leaf drive, with the exception that a line 11 in which the valve 7 is arranged extends from the oil tank 32. The second connection to the valve 7 via the line 11 goes via the already described valves 21 and 22 with a solenoid valve 31 still in between to the pressure chamber 20 on the pump side. In the schematic illustration, the pin 9 of the valve 7 interacts with the cam plate 5 in accordance with the manner described above. LIST OF REFERENCE NUMBERS

1 door closer

2 door closers

3 axis

linkage

5 cam

indentation

Valve

casing

pen

10 spring

11 lines or hoses

12 system carriers

13 assembly lever

14 release lever

15 pivot point

16 ball bearings

17 pressure plate

18 Connection piece 9 pressure spring 0 pressure chamber (pump side) 1 closing damping valve 2 closing speed valve 3 opening speed valve 4 opening damping valve 5 piston 6 suction valve (opening direction) 7 pump check valve 8 pump engine

Pressure relief valve

magnetic valve

oil tank

Pressure chamber (spring side)

slide

edge

Claims

claims

1. Hydraulic-mechanical closing sequence control for double-leaf doors that have a passive leaf and a active leaf, both the fixed leaf and the active leaf each having a hydraulically actuated device (1, 2) with at least one piston /

Cylinder unit for the respective opening and / or closing are acted upon, at least the cylinder unit of the active leaf having a pressure chamber (20, 33) on each side of the piston (25), which are interconnected by a hydraulic line (11) and a valve (7) included, which is controlled by an opening movement of the passive leaf, and which the devices (1, 2) are each provided with an axis (3), characterized in that on the axis (3) of the door closer (1) for the Inactive leaf a cam disc (5) is arranged, which cooperates with a valve (7), which the door closer (2) of

Active wing controls.

2. Hydraulic-mechanical closing sequence control for double-leaf doors that have a passive leaf and a active leaf, both the passive leaf and the active leaf each having a hydraulically actuated device (1, '2) with at least one piston /

Cylinder unit for opening and / or closing are acted upon, at least the cylinder unit of the active leaf having a pressure chamber (20, 33) on each side of the piston (25), which are interconnected by a hydraulic line (11) and a valve (7) contain, which is controlled by an opening movement of the passive leaf, which is each provided with an axis (3), each of which is engaged by a linkage, the other end of which is displaceable in a slide rail (34) Slider (35) is connected, characterized in that the slider (35) of the door closer (1) for the passive leaf interacts with a valve (7) which controls the door closer (2) of the active leaf.

3. Hydraulic-mechanical closing sequence control according to claim 1 or 2, characterized in that the device (1, 2) is an overhead door closer, an interior door closer, a frame door closer, a floor door closer or a hydraulic mechanical drive.

4. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the control of the door closer (2) of the active leaf takes place via a hydraulic connection.

5. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the hydraulic connection consists of lines (11) which are preferably integrated in a system carrier (12) or in a slide rail.

6. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the lines are extruded into the system carrier (12) or into the slide rail.

7. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the hydraulic connection consists of hoses (11).

8. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the Valve (7) allows movement of the active leaf in the open state and blocks movement of the active leaf in the closed state.

9. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the

Valve (7) allows movement of the active leaf in the closed state and blocks movement of the active leaf in the open state.

10. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the

Valve (7) is only open in a single indentation of the cam disc (5), but is closed in all other positions.

11. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the valve (7) is closed only in a single indentation of the cam disc and is open against it in all other positions.

12. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the valve (7) is provided with a valve body (8) from which a spring-loaded pin (9) protrudes.

13. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the spring (10) presses the projecting end of the pin (9) against the cam disc (5).

14. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the Valve (7) is closed when the pin (9) is engaged and is open when the pin (9) is disengaged.

15. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the valve (7) with the pin (9) open and with the disengaged

Pin (9) is closed.

16. Hydraulic-mechanical closing sequence control according to one of the preceding claims, characterized in that the pin (9) is controlled directly or indirectly by the cam disc (5).

17. Hydraulic-mechanical closing sequence control according to claim 16, characterized in that a release lever (14) is interposed between the pin (9) and the cam disc (5).

18. Hydraulic-mechanical closing sequence control according to claim 17, characterized in that the release lever (14) has a pressure plate (17) in the region of the contact of the pin (9).

19. Hydraulic-mechanical closing sequence control according to claim 17, characterized in that the release lever (14) in the region of the cam disc (5) has a ball bearing (16).