EP2206867A2 - Door actuator for actuating a door leaf - Google Patents

Abstract

The actuator i.e. door drive (1) has a shutter shaft (2) actuating a door leaf that is driven from a electric drive motor (4), a flap carriage (5) and a spring force torque arm in a direction by a mechanical operative connection with the motor, carriage and the arm. The carriage implements a movement i.e. linear movement, during driving of the shutter shaft by the motor, carriage and the arm. An electric switch (3) is mechanically operated by the flap carriage such that electrical information about an opening position of a rotary leaf is provided.

Description

The present invention is directed to a door actuator configured to open and / or close a connected rotary wing, i. H. to pivot a connected door leaf in at least one direction. The door operator has a drive unit and a closer shaft for actuating the door leaf. The closer shaft can be driven by the drive unit via a mechanical operative connection, wherein the mechanical operative connection has at least one element which performs a movement when the closer shaft is driven by the drive unit.

Door operators of the present type may be designed as a purely mechanical door closer, so that the drive unit comprises only a spring energy store, which has a closing spring, which is tensioned at a manual opening of the door, so that the closing movement of the door can be performed by the closing spring. For this purpose, a gear must be provided between the spring energy store and the closer shaft, which includes, for example, a cam against which a pressure roller runs, wherein the pressure roller is pressed against the cam and the pressure force is applied by the spring force accumulator. The connecting member between the spring energy accumulator and the pressure roller can represent an element that performs a linear movement. Furthermore, the energy stored in the closing spring can be transmitted via other types of transmission to the closer shaft, this rack-and-pinion arrangements are known, and also mechanical-fluidic power transmissions are possible, which also have at least one movable element.

Further embodiments of door drives have an electric drive motor, which can drive the closer shaft either individually or in addition to the spring energy storage, in a direction opposite to the action of the closing spring direction. By rotation of the closer shaft, the door leaf is moved between a closed position and an open position, wherein the operative connection between the closer shaft and the door leaf often comprises a sliding arm, which is guided in a slide rail end. In the present case, however, the operative connection between the closer shaft and the door leaf can also be designed in accordance with any further known design.

In order to drive the closer shaft with the electric drive motor, a gear and / or a pump is provided, which may also have an element that performs a movement and in particular a linear movement. In the present case, the drive unit consequently comprises both an electric drive motor and a spring force accumulator. The mechanical operative connection between the drive unit and the closer shaft may comprise any type of transmission comprising one or more movable elements.

In order to detect the opening state of the door leaf of the door, rotary encoders are known, which are usually arranged in the transmission for driving the closer shaft and output an electrical signal. Such rotary encoders can be controlled or read by means of relatively expensive electronics, and in the event of a failure of the electronics, in particular in the case of door arrangements with a closing sequence control, it may further be necessary to obtain a simple electrical signal via the opening state of the door leaf. A decoupling of the closing sequence control of the electrical control of the individual door drives of the door leaves is not possible with known door drives, so that only with increased effort an electrical signal is available as information about the opening and closing state of the door leaf.

It is therefore an object of the present invention to provide a door operator, preferably a door drive, which has a simplified structure for providing an electrical signal on the open position of a door leaf.

This object is achieved on the basis of a door operator for actuating a door leaf according to the preamble of claim 1 in conjunction with its characterizing features. Advantageous developments of the invention are specified in the dependent claims.

The invention includes the technical teaching that an electrical switch is provided, which is actuated by a movable element of the door actuator according to the invention such that electrical information about an open position of the rotary wing is provided. Ie. the electrical switch is mechanically operated by the movable element.

According to the invention, the electrical switch is actuated by the movable element in such a way that the electrical switch preferably outputs electrical information when the door leaf assumes a specific open position. The provision of electrical information is therefore decoupled from a possibly also present rotary encoder in the transmission of the door operator. However, the arrangement of the electrical switch may be provided in addition to a rotary encoder, wherein the electrical switch may be formed as a simple on-off switch.

Advantageously, a drive unit of the door operator according to the invention has an electric drive motor, which can preferably be switched off by the electrical switch. The opening position leading to shutdown of the door leaf connected to the door operator preferably corresponds to the end impact of the door leaf, so that the shutdown by the electrical switch preferably takes place in the final impact of the door leaf. The final impact describes the maximum possible opening position of the door leaf, so that in this position, the electric drive motor must be turned off, the shutdown can be done by the electrical switch. The electrical switch can be arranged within the door operator such that the actuation of the electrical switch corresponds to the position of the end impact of the door leaf.

Alternatively or additionally, the drive motor is operated as a generator when driving the door leaf in the at least one direction. As a result, the drive motor preferably sets the closing movement of the door leaf against a predetermined resistance, thus dampening the movement of the door leaf. The electrical switch is connected to the drive motor in such a way that upon actuation of the electrical switch the predetermined resistance of the drive motor is changed. As a result, a change in the damping behavior without hydraulic aids is possible.

For this purpose, the electrical switch is preferably connected in series between an electrical load resistor and the drive motor. This results in an enormously simple interconnection of the electrical switch. Preferably, apart from the drive motor and electrical switch, the entire interconnection part of a control for the door drive.

Depending on the installation situation of the door, the end impact of the door leaf may be present, for example, at an opening angle of 90 °, whereby an opening angle of 120 ° and more may occur. Preferably, the electrical switch is received in a simple manner so mechanically in the door drive, that the output of the electrical information about the achievement of the end impact of the door leaf takes place in the correct position. Once the door leaf reaches the end stop, the electric drive motor can be switched off by the electrical switch, which can be connected to a controller, so that the electrical information only causes the shutdown of the electric drive motor by the controller. The electrical information about the opening state of the door leaf can also serve only to monitor the door, for example by means of a central, existing in a building control center.

According to a further advantageous embodiment, the drive unit has a spring energy store with a closing spring, which is operatively connected to the closer shaft and is stretched over the opening movement of the door leaf and relaxed again on the closing movement of the door leaf. By the relaxation of the closing spring, a movement of the door leaf is effected in the closed position, wherein the operative connection between the closing spring and the closer shaft comprises the movable member. The movable element may be arranged between the closing spring and the closer shaft and designed as a flap carriage, which is connected via a rod, a pull and / or push rod, with the closing spring and to which a pressure roller is taken, which rolls over the cam, the sits on the closer shaft.

The rod preferably extends through the closing spring and is connected to the flap carriage or fixed thereto, against which the closing spring is supported. By way of example, if a tensile force is applied to the rod, then the closing spring compresses, and the rod executes a linear movement. The rod is preferably rigidly connected to the flap carriage so that it moves equally with the rod. If, for example, the door leaf is opened, either manually or by means of a possibly existing electric drive motor, the pressure roller rolls over the cam disk, the radial distance of the pressure roller from the axis of rotation of the closing spring increases. This increase in the radial distance leads to a linear movement of the flap carriage and the rod, whereby the closing spring is compressed. Consequently, the movement position of the flap carriage corresponds to the respective opening position of the door leaf. The electric switch may be arranged in the vicinity of the flap truck so that it is actuated by the flap carriage in the execution of its linear movement.

The door operator may be provided in a door assembly having a stationary leaf and a walking wing. In such door arrangements closing sequence controls are provided, so that initially the inactive leaf, an open position, for example, the closed position must take, in which a safe closing of the active leaf is guaranteed to subsequently close the active leaf, as this overtops the inactive leaf with a door rebate. For this purpose, preferably mechanical coupling elements are provided between the door operator of the inactive leaf and the door operator of the active leaf, wherein a part of these coupling elements may comprise a signal plunger which is arranged on the flap carriage and mitbewegbar with this. The electrical switch can therefore be arranged, for example, in the door leaf side door actuator so that it can be actuated by the movement of the signal plunger. For this purpose, the signal tappet may have an actuating lug which cooperates with a triggering element of the electrical switch for its actuation. The signal tappet may extend in a longitudinal direction which runs parallel to the extension direction of the closing spring, wherein the signal tappet may be arranged adjacent to the spring force accumulator.

It is particularly advantageous if the switch receptacle for receiving the electrical switch is accommodated by means of receiving elements on a base body of the door drive and / or on the spring energy accumulator. The switch receptacle can with the electric switch in the direction be made adjustable to move the signal plunger to make the triggering of the electrical switch adjustable depending on the opening position of the door leaf. In particular, with differently wide-opening door leaves can be done so a simple adjustment of the position of the electrical switch so that it detects, for example, at an opening position of 90 ° or, for example, at an opening position of 120 ° or beyond the Endschlag position of the door leaf.

In order to make the switch receptacle adjustable by means of the receiving elements, they can be provided with oblong holes, in which the receiving elements are received longitudinally movable. The elongated holes may extend within the switch receptacle in the direction of movement of the signal plunger and have a mushroom-like approach, which has a diameter or a slot width, through which the receiving elements can be guided. If the switch receptacle is moved relative to the receiving elements, they travel through the narrow region of the oblong holes, and the switch receptacle is arranged captively by the receiving elements or even fixed.

The receiving elements can be designed to be screwed, so that the screws of the receiving elements are released upon adjustment of the switch receptacle and tightened upon reaching the desired position. Alternatively, the receiving elements may comprise spring-loaded clamping body, so that the switch receptacle can be moved longitudinally movable by a force to be applied. In this case, the force required to move the switch receptacle is greater than the actuation force of the electrical switch, so that the switch receptacle does not change its position without manual intervention by the receiving elements within the door drive.

According to a further embodiment, the electrical switch can also be actuated by a plunger, which is preferably arranged on the end side of the spring force accumulator. The spring force accumulator extends along the direction of movement of the flap carriage or the drawbar, wherein in the region of the free and the tab carriage end remote from the pull rod of the plunger is arranged. If the door is operated, there is a longitudinal movement of the rod, so that this longitudinal movement is continued in the ram end to the rod. Consequently, the axial movement position of the plunger corresponds to the open position of the door leaf.

The operative connection between the plunger and the electrical switch may comprise a rocking element, which is received in a rocking axis pivotable in the door drive. The rocker element has a first Betätigungsanformung which is articulated by the plunger, wherein the rocker element further has a second Betätigungsanformung which serves to trigger the electrical switch. The rocking axis extends at an angle and preferably transversely to the direction of movement of the plunger, wherein the two Betätigungsanformungen are introduced on a respective opposite side in the rocking element in order to pivot both Betätigungsanformungen to the rocking axis around.

The electrical switch is accommodated by means of a switch receptacle in the door drive, wherein the switch receptacle with the electrical switch in the position relative to the rocker element is adjustable to perform the triggering of the electrical switch depending on the open position of the door leaf adjustable. If the door leaf is opened, the closing spring compresses. Consequently pulls or pushes the tab carriage, the rod a little way out of the closing spring, so that the plunger is moved toward the closer shaft and thus away from the electrical switch. This initially increases the distance between the electrical switch and the plunger.

Due to the reversal of movement achieved by the rocking element, the first actuating formation follows the movement of the plunger, with the opposing second actuating formation moving in the direction of the electrical switch by the rotation about the rocking axis. In order to achieve a logical movement of the rocking element, a spring element is provided which biases the rocker element about the rocker axis such that the first actuating formation in the direction of the ram is preferably urged in such a way that it comes to rest against the ram permanently. The spring element may be formed as a double leg spring and causes a sufficiently large bias around the rocker axis, that also the electrical switch can be actuated.

The door operator may have a locking device with which the door leaf is lockable in an open position, wherein the locking device can be designed switchable with the electrical switch. The determination of the door leaf can be done, for example, in the area of the end impact, so that the electrical switch then activates the locking device when the door leaf has reached the end impact.

According to a further advantageous embodiment, the door operator has a system carrier for forming its basic structure, wherein at least the electrical switch, the switch receptacle and / or the rocker element can be accommodated in the system carrier. The electrical switch can likewise advantageously be fastened to the spring force accumulator or to the drive motor, wherein the arrangement of the electrical switch must only take place on a stationary element within the door drive.

Further, measures improving the invention will be described in more detail below together with the description of a preferred embodiment of the invention with reference to FIGS.

Figur 1 a

eine perspektivische Ansicht von Teilen eines Türbetätigers gemäß einer Ausführungsform der Erfindung in Form eines Türantriebs mit einem elektrischen Antriebsmotor sowie einer Schließerfeder zur Betätigung einer Schließerwelle des Türantriebs,

Figur 1 b

eine andere perspektivische Ansicht des Türantriebs von Figur 1 a,

Figur 2

eine perspektivische Teilansicht einer Antriebseinheit des Türantriebs von Figur 1 a mit einem elektrischen Antriebsmotor sowie einem Federkraftspeicher,

Figur 3

eine perspektivische Teilansicht des Federkraftspeichers des Türantriebs von Figur 1 a,

Figur 4

eine perspektivische Detailansicht der Schalteraufnahme des Türantriebs von Figur 1 a,

Figur 5a

die Anordnung der Schalteraufnahme von Figur 1 a in Bezug auf einen Systemträger des Türantriebs,

Figur 5b

eine Schnittansicht entlang einer Linie A - A in Figur 5a,

Figur 6

eine perspektivische Detailansicht des Signalstößels zur Auslösung des elektrischen Schalters von Figur 1 a,

Figur 7

eine andere perspektivische Teilansicht der Antriebseinheit des Türantriebs von Figur 1 a,

Figur 8a

ein weiteres Ausführungsbeispiel einer Anordnung eines elektrischen Schalters zur Auslösung durch einen endseitig an der Schließerfeder angeordneten Stößel,

Figur 8b

die Anordnung von Figur 8a in einer Schnittansicht, mit Systemträger,

Figur 8c

die Anordnung von Figur 8b in einer anderen Ansicht,

Figur 9

ein Prinzipschaltbild einer Verschaltung des Schalters von Figur 1a, gemäß einer anderen Ausführungsform der Erfindung und

Figur 10

ein Prinzipschaltbild einer Verschaltung des Schalters von Figur 1a, gemäß wiederum einer anderen Ausführungsform der Erfindung.

Show it:

FIG. 1 a

a perspective view of parts of a door operator according to an embodiment of the invention in the form of a door drive with an electric drive motor and a closing spring for actuating a closer shaft of the door drive,

Figure 1 b

another perspective view of the door drive of FIG. 1 a,

FIG. 2

a partial perspective view of a drive unit of the door drive of FIG. 1 a with an electric drive motor and a spring energy storage,

FIG. 3

a partial perspective view of the spring force memory of the door drive of FIG. 1 a,

FIG. 4

a detailed perspective view of the switch receptacle of the door drive of FIG. 1 a,

FIG. 5a

the arrangement of the switch receptacle of FIG. 1 a with regard to a system carrier of the door drive,

FIG. 5b

a sectional view taken along a line A - A in FIG. 5a .

FIG. 6

a detailed perspective view of the signal plunger for triggering the electrical switch of FIG. 1 a,

FIG. 7

another perspective partial view of the drive unit of the door drive of FIG. 1 a,

FIG. 8a

a further embodiment of an arrangement of an electrical switch for triggering by a end arranged on the closing spring plunger,

FIG. 8b

the arrangement of FIG. 8a in a sectional view, with system carrier,

FIG. 8c

the arrangement of FIG. 8b in another view,

FIG. 9

a schematic diagram of an interconnection of the switch of FIG. 1a , According to another embodiment of the invention and

FIG. 10

a schematic diagram of an interconnection of the switch of FIG. 1a , again according to another embodiment of the invention.

In FIG. 1 a is shown in a perspective view of a door operator according to an embodiment of the invention in the form of a door drive 1 in parts. The door drive 1 is used to actuate a door leaf of a connected door, not shown. The basic structure of the door drive 1 is exemplified by a in FIG. 1 a for reasons of clarity not shown system support 17 of the door drive 1 is formed, which may be extended in a modular manner by further carrier components of the door drive 1.

The actuation of the door leaf by the door drive 1 via a closer shaft 2, which protrudes from the door drive 1. The closer shaft 2 is driven in rotation by means of a drive unit.

The door drive 1 is in the present case designed as an electric door drive 1 with an electric drive motor 4. The closer shaft 2 is drivingly connected to the drive motor 4 via a gear 20.

The drive unit further has an in FIG. 1 This is coupled via a plate carriage 5 with the closer shaft 2 such that upon rotation of the closer shaft 2, a compression of the shutter spring 19 can be effected. For this purpose, a pressure roller is attached to the flap carriage 5 - in a manner not shown in detail - which rolls on a cam which is arranged rotationally fixed on the closer shaft 2. By a variable over the rotation angle of the closer shaft 2 radius of the cam a linear movement of the flap carriage 5 is generated when the closer shaft 2 is rotated by opening or closing the door leaf. The linear movement of the flap carriage 5 causes compression or decompression of the closing spring 19, so that the closing spring 19 is preferably compressed when opening the door leaf and can cause the closing movement of the door leaf without energization of the electric drive motor 4.

On the tab carriage 5, a signal plunger 6 is mounted in a preferably rigid arrangement, which cooperates with an electrical switch 3 to its actuation. In order to receive the electrical switch 3 within the door drive 1, a switch receptacle 7 is advantageously provided.

FIG. 1b shows the door drive 1 of FIG. 1a , but with system carrier 17 and an unspecified control for the door drive. 1

The exact operative connection between the electrical switch 3 and the signal plunger 6 is shown in more detail in the following figure.

FIG. 2 shows a perspective view of the drive unit of the door drive 1 with the electric drive motor 4 and the spring energy storage 18, in which the in FIG. 2 invisible closing spring 19 is received and cooperates linearly movable with the flap carriage 5 to enable the closer shaft 2 in rotation.

The signal plunger 6 preferably extends along the longitudinal axis of the spring force accumulator 18 and consequently along the direction of movement of the flap carriage 5, which is indicated by a double arrow. The signal plunger 6 is preferably mounted on the tab carriage 5 via a plunger seat 21, so that it performs the same linear movement as the flap carriage 5. The signal plunger 6 preferably has an actuating tab 8, which points in the direction of the electrical switch 3.

In the example shown, the electrical switch 3 has a triggering element 9, which is preferably arranged spring-back over the switch 3 and thus forms a switching lug. Moves the signal plunger 6 along the double arrow shown in the example shown to the left in FIG. 2 Thus, the actuating lug 8 of the signal plunger 6 at least partially covers the triggering element 9 of the electric switch 3. Due to an inclination of the triggering element 9 with respect to the path of movement of the actuating lug 8, the triggering element 9 is lowered in FIG FIG. 2 pressed and thus the electrical switch 3 is actuated. Thus, the switch 3 can provide an electrical signal. The operation of the electrical switch 3 is thus advantageously carried out by depressing the triggering element 8 in the direction of switch 3. The electrical switch 3 is preferably received via the switch receptacle 7 on the spring force accumulator 18 or its housing. The recording is done by way of example via receiving elements 10, which are guided in preferably elongated holes 15 within the switch receptacle 7 along. Thus, the electric switch 3 in its direction of movement, so preferably in the direction of movement of the flap carriage 5, be changed in its axial position with respect to the actuating lug 8. The electrical switch 3 is firmly received in the switch receptacle 7.

The switch receptacle 7 advantageously has a handle molding 22, so that the axial position of the switch receptacle 7 can be changed manually. Consequently, the electric switch 3 can be displaced in the direction of movement of the flap carriage 5, represented by the double arrow, in such a way that the triggering of the electrical switch 3 by the signal plunger 6 can take place at differently adjustable positions which correspond to respective rotational positions of the closer shaft 2. Since the respective rotational positions of the shutter shaft 2 correspond to a respective door opening angle, it is possible to set the operation of the electric switch 3 by means of the actuating lug 8 to a desired door opening angle.

FIG. 3 shows the relevant parts of the signal plunger 6 of the unspecified here door drive 1. The spring energy accumulator 18 opens at a in FIG. 3 right end, ie that of the shutter shaft 2, not shown facing end, for example in a flange plate 28 and is inserted into this. The flange plate 28 is used to fasten the spring force accumulator 18 preferably on a gear housing of the door drive 1. The signal plunger 6 is preferably stored in the flange plate 28 by means of a guide bush 29 inserted into this preferably further linearly stored.

The guide bush 29 is advantageously designed so that the signal plunger 6 brushes along it in such a way that dirt particles from the outside, ie from the left in FIG. 3 , not through the flange plate 28 through and thus can get into a transmission housing interior.

Particularly clearly, the actuating lug 8 of the signal plunger and the tripping element 9 of the switch 3 inclined thereto can be seen.

Further, the receiving elements 10 are shown, to which the switch receptacle 7 is attached via the elongated holes 15 on the spring force spoke 18 or mounted at least longitudinally movably.

FIG. 4 shows a perspective view of only the switch receptacle 7 of one with respect to FIG. 3 opposite side, in which the slots 15 are incorporated for receiving the receiving elements 10, not shown here.

The oblong holes 15 preferably extend in the longitudinal direction of the switch receptacle 7, which preferably corresponds to the direction of movement of the flap carriage 5, also not shown, within the door drive 1. The oblong holes 15 preferably terminate in a respective mushroom-like formation 23, through which the receiving elements 10, not shown here, can first be passed through in order to clamp, for example, in the region of the oblong holes 15. For this purpose, the receiving elements 10 may have screw-head-like ends, which may indeed be guided through the mushroom-like formations, but due to the narrower design of the slots 15 abut against the surface of the sheet-like switch receptacle 7.

The attachment of the electrical switch 3, also not shown, by means of mounting holes 24, through which the electrical switch 3 can be screwed to the switch receptacle 7. On the opposite side of the thus formed attachment for the electrical switch 3 through the mounting holes 24 is the Griffanformung 22, wherein the switch receptacle 7 is made in one piece by punch-bending method of a sheet metal component.

In addition or as an alternative to the oblong holes 15, the switch receptacle 7 preferably has a projection 30. The projection 30 preferably has a slot 33 inside again. The oblong hole 33 serves for the stationary fastening of the switch receptacle 7 on the door drive 1, preferably on the system carrier 17 or on the housing of the spring force accumulator 18.

To connect the connecting cables of in FIG. 4 not shown electrical switch 3 to be able to safely move also not shown control of the door drive 1, preferably through holes 31 are provided. These serve to carry out conventional cable ties, by means of which the connection lines of the electrical switch 3 can be fixed and thus securely laid.

FIG. 5a shows the arrangement of switch receptacle 7 and exemplary system support 17 in a perspective view obliquely from the front right above with respect to the system carrier 17. As can be seen, the slot 33 of the locking projection and a corresponding mounting opening 32 in the system carrier 17 are aligned. Furthermore, the electrical switch 3 is hinted at.

FIG. 5b shows the arrangement of FIG. 5a along a section line A - A in FIG. 5a , The locking of the switch receptacle 7 on the system carrier 17 is preferably carried out by means of a locking screw 34 which is inserted from one side through the mounting hole 32 and the slot 33 and screwed at the free end with a nut 35, as indicated by the dashed line.

The system carrier 17 is in FIGS. 5a and 5b each shown from a top. The door drive 1 or its system support 17 is mounted with a bottom, for example on a mounting plate, which in turn is attached, for example, to a lintel. Ie. the top of the system carrier 17 always points to the fitter. This has the consequence that in the embodiment shown, both the locking screw 34 for screwing and the Griffanformung 22 for moving the switch receptacle 7 are accessible at any time, which facilitates the adjustment of the switch receptacle 16. For this purpose, the locking nut 35 is preferably taken captive by means of terminals or the like in the system support 17.

Alternatively, the locking screw 34 is screwed into the mounting opening 32, for example, self-tapping.

FIG. 6 shows a perspective view of the signal plunger 6, on which the actuating lug 8 is formed for triggering the trigger element 9 of the electric switch 3, not shown here. At a first, not shown, closer shaft 2 of the door drive 1 end facing the signal plunger 6 has a receiving end 25. The receiving end is used to attach the signal plunger 6 to the flap carriage 5, not shown here.

FIG. 7 shows the connection of the signal plunger 6 here, for example, to the tab truck 5 from a different perspective. The signal plunger 6 is preferably screwed with its receiving end 25 in a correspondingly formed receptacle 21 of the flap carriage 5, but can also be pressed, glued or attached in any other way. The attachment of the signal plunger 6 on the tab carriage 5 is preferably rigid, but can also be designed, for example, pivotable. In the case, the above-described, not shown here guide bush 29 ensures the linear movement of the signal plunger. 6

A pressure roller 39 rolls on the circumferential surface of a corresponding Hubkurvenscheibe 40 of the door drive 1, for example, substantially in Pressed off towards signal plunger 6. Drucktolle 39 and Hubkurvenscheibe 40 are added freely rotatable in the tab carriage 5.

In FIG. 8a is a further embodiment of an arrangement now shown an electrical switch 3 'within the door drive 1, and indeed for reasons of clarity without system support 17. The electrical switch 3' is attached via a switch receptacle 16 on the door drive 1.

The switch receptacle 16 is arranged variably in the door drive 1 preferably along the double arrow shown.

The electrical switch 3 'is mounted below the preferably sheet-shaped switch receptacle 16 and has an actuating end, preferably in the form of a triggering element 9', so that at a pressure on the actuating end of the electrical switch 3 'can be triggered.

At a the switch 3 'facing the end of the not visible here closing spring 19, a plunger 11 is attached. To form an operative connection between the plunger 11 and the electrical switch 3 ', a rocking element 12 is provided, which is received in the door drive 1 so as to be pivotable about a rocking axis 13. The rocker axis 13 preferably extends transversely to the direction of movement of the non-visible flap carriage 5 and thus transversely to the compression direction of the closing spring 19th

The rocker element 12 has a first Betätigungsanformung 26 which is articulated by the plunger 11, and a second Betätigungsanformung 27, which serves to trigger the electrical switch 3 '. The Betätigungsanformungen 26, 27 are preferably ends of the rocker element 12th

Advantageously, the rocker element 12 is acted upon by a spring element 14, for example in the form of a double leg spring, such that the spring element 14 presses the first actuating projection 26 against the plunger 11 or pushes in the direction of the plunger 11.

The other spring end of the double leg spring is, as in FIG. 8b to recognize, at an inner, down in FIG. 8b pointing surface preferably supported by the system carrier 17. The supported on the system support 17 spring ends preferably have a distance to each other, so that between them creates a gap in which the second Befestigungsanformung 27 is advantageously arranged and by eie in FIG. 8b recognizable passage opening 36 in the system carrier 17 passes freely pivotable.

Upon compression of the shutter spring 19, the plunger 11 moves in the longitudinal direction of the shutter spring 19, in the example shown by the switch 3 'away. As a result, the first actuating projection 26 also moves or pivots away from the electrical switch 3 'due to the action of the spring element 14. As a result, the second Betätigungsanformung 27 in the direction of electrical switch 3 'moves or pivoted and pressed after a certain path of movement against the switch 3' and its trigger element 9 'and due to the action of the spring element 14 of the switch 3' ultimately operated.

It is thus achieved a reversal of movement of the plunger 11 with respect to the second Betätigungsanformung 27; the first Betätigungsanformung 26 below the rocking axis 13 follows the movement of the plunger 11, whereas the second Betätigungsanformung 27 moves in an opposite direction.

The spring element 14 is preferably provided, the rocker element 12 with the first Betätigungsanformung 26 permanently against the plunger 11th to bring to the plant, and preferably also extends around the rocking axis 13 around.

In FIG. 8b is the shutter spring 19 to recognize approach.

The electrical switch 3 'is similar to the electrical switch 3 now attached to the switch receptacle 16 by means of mounting holes 24'.

In order to adjust the operation of the switch 3 'to a desired open position of a connected rotary vane, the switch receptacle 16 is preferably provided with fastening means 37, for example in the form of screws.

As in particular in FIG. 8c For this purpose, the screws are accommodated in oblong holes 38, preferably of the system carrier 17 of the door drive 1, for this purpose. The elongated holes 38 preferably extend along the direction of movement of the plunger 11. At the desired position, which corresponds to an opening position of the connected door leaf due to the plunger arrangement, the switch receptacle 16 or the switch 3 'fastened thereto is fixed to the door drive 1 by means of the fastening means 37 whose system carrier 17 is locked.

FIG. 9 shows a schematic diagram of an interconnection of the switch 3 according to another embodiment of the invention. Additional switching elements such as protective capacitors and the like are omitted for clarity.

In this embodiment, the drive motor 4 may preferably be operated as a generator when closing a door leaf. So that the drive motor 4 does not block the movement of the door leaf, the electrical energy generated by it must be dissipated.

This is done by way of example an adjustable electrical resistance R _1, preferably in the form of a potentiometer. The potentiometer offers the possibility of adapting the door drive to the respective conditions on site, for example to the door leaf weight.

The drive motor 4 is connected in series with a control element, for example in the form of an NPN transistor T, with its collector and emitter terminals. The emitter terminal of the transistor T is further coupled to an input of a regulator Re. An output of the regulator Re is coupled to the base of the transistor T and thus controls the transistor T. Another output of the regulator Re is connected in series with the resistor R ₁ , which is connected with its other terminal to ground. Ie. the removal of the electrical energy generated by the drive motor 4 is dissipated via the resistor R ₁ , which thus determines the resistance that opposes the drive motor 4 due to its regenerative operation of its own movement and thus the movement of the door leaf; he thus determines the damping effect of the drive motor.

The resistor R ₁ is connected in parallel to a series circuit consisting essentially of the switch 3 and another electrical resistor R ₂ , preferably again in the form of a potentiometer.

If the door leaf is in the predetermined opening position, the switch 3 is actuated.

Is the switch 3, as in FIG. 9 shown, designed as normally open, it switches the electrical resistance R ₂ to. This reduces the total resistance of the voltage applied to the other output of the regulator Re total electrical resistance. As a result, more of the electrical energy or power generated by the drive motor 4 can be dissipated, which results in that the damping effect of the regeneratively driven drive motor 4 decreases.

This is useful, for example, for an end impact control, if it is to be ensured that the door drive 4 securely brings the door leaf into the closed position. A preferred solution is to increase the driving force of the door drive 4 shortly before reaching the closed position, for example at 7 ° opening angle of the door leaf. This is preferably done by switching the switch 3 on actuation of the resistor R ₂ .

This solution allows the use of the door drive also for a fire door, which in an emergency, d. H. in the absence of power supply, must close safely, for example, to prevent smoke extraction in other rooms.

If, in addition, the switch 3 'is connected in a similar manner as an opener, as shown in the left-hand part of the interconnection, the reverse effect can be achieved. Ie. an actuation of the switch 3 'leads to a separation of the electrical connection between now a third electrical resistance R ₃ and the controller Re and thus the drive motor 4. This reduces the power that can be dissipated by the resistance circuit; the damping effect of the drive motor 4 increases. This can be used, for example, to reduce the closing speed of the door leaf, so that the risk of injury due to the falling door leaf can be reduced.

To set a door leaf in motion, its inertia must be overcome. If, due to the opener 3 ', the damping effect of the drive motor 4 is reduced, the spring energy accumulator can introduce more force into the door leaf and thus start its movement more easily.

The switches 3, 3 'can each also be reversed, d. H. instead of normally open as normally closed or vice versa.

The interconnection according to FIG. 9 is preferably designed such that the normally-open switch 3 is actuated when the door leaf occupies an opening angle smaller and / or equal to a predetermined first opening angle, preferably close to the closing position. By contrast, the switch 3 ', which is designed as an opener, is actuated when the door leaf occupies an opening angle greater than or equal to a predetermined second opening angle, preferably close to the opening position.

The regulator Re is preferably designed as a constant voltage regulator, i. H. it controls the voltage applied to the drive motor 4 voltage.

Instead of two resistors, the switches 3, 3 'also, as in FIG. 10 shown cooperate with a single resistor R _D. As a result, an equal damping effect is achieved at the beginning and at the end of the movement of the door leaf.

The resistors R ₁ , R ₂ , R ₃ , R _{D used} can, of course, each be designed as unchangeable electrical resistors.

If the drive motor 4 is also used when closing, the switches 3, 3 'can now be used to connect or disconnect the drive motor or to connect a respective electrical resistance or to disconnect it electrically from the drive motor.

The invention is not limited in its execution to the above-mentioned preferred embodiment. Rather, a number of variants is conceivable, which of the illustrated solution also makes use of fundamentally different designs. All features and / or advantages resulting from the claims, the description or the drawings, including design details, spatial arrangements and method steps, can be essential to the invention, both individually and in the most diverse combinations.

Advantageously, the electrical switches 3, 3 'are identical.

Furthermore, it is possible to provide both described switch arrangements on one and the same door drive 1 at the same time. This has the advantage that the switches 3, 3 'can be used to detect once the fully open position and once the fully closed position of the connected door leaf.

Alternatively, the switches 3, 3 'can be operated redundantly, so that a switch 3, 3' can fail without impairing the operational safety.

The invention is of course also applicable to door operators, in which the pressure roller between the closing spring and cam is arranged. In that case, the pressure roller holder is designed to receive the signal plunger 6 in a stationary manner for the electrical switch 3. For the electric switch 3 'this time a push rod is inserted into the closing spring, which actuates the rocking element 12.

In the case of a rack-based door operator example, the above-described electrical switch 3 'with the switch receptacle 16 again operatively connected to a push rod which passes through the closing spring and at a the rack piston remote end of the closing spring, for example, sealingly from the housing of the door operator exits and acted on at one of the rack piston end facing this and thus moved with. Push rod and rack piston are preferably fixed to each other fixed. The free end of the push rod is analogous to the plunger 11 brought into operative connection with the switch 3, so that the same switch function can be achieved.

The switches 3, 3 'are also suitable for closing sequence controls. On one of the stand-side door actuators, one of the switches 3, 3 'can be provided for triggering or releasing an exemplary electric locking device, the actuation of which causes blocking or release of the door leaf-side door actuator. The other switch 3 ', 3 can be used to detect the fully open position of the passive leaf, for example, to shut off a drive motor 4.

Since the electrical switches 3, 3 'are preferably operated mechanically, their switching function is ensured even in the event of a power failure, which increases the reliability.

LIST OF REFERENCE NUMBERS

1

door drive

2

closer shaft

3, 3 '

electrical switch

4

electric drive motor

5

movable element, flap carriage

6

signal follower

7

switch bracket

8th

operation flag

9, 9 '

triggering element

10

receiving element

11

tappet

12

rocker

13

rocking axis

14

spring element

15

Long hole

16

switch bracket

17

system support

18

Stored energy

19

closer spring

20

transmission

21

Ram receptacle

22

Griffanformung

23

mushroom-like shape

24, 24 '

mounting hole

25

receiving end

26

first Betätigungsanformung

27

second Betätigungsanformung

28

flange

29

guide bush

30

locking projection

31

Cable ties implementing

32

fastening opening

33

Long hole

34

locking screw

35

locking nut

36

Through opening

37

screw

38

Long hole

39

pressure roller

40

cam disc

R ₁

electrical resistance

R ₂

electrical resistance

R ₃

electrical resistance

R _D

electrical resistance

re

regulator

T

transistor

Claims (19)

Door operator (1), arranged to pivot a door leaf in at least one direction, with • a drive unit (4, 5, 18) and A closer shaft (2) for actuating the door leaf, which is driven via a mechanical operative connection with the drive unit (4, 5, 18) from the drive unit in the at least one direction, wherein The mechanical operative connection has at least one element (5) which performs a movement when the closer shaft (2) is driven by the drive unit (4, 5, 18), and • an electrical switch (3, 3 ') is provided, which is mechanically actuated by the movable element (5) such that electrical information about an open position of the rotary wing is provided characterized in that • that the movement of the at least one element (5) is a linear movement. Door operator (1) according to claim 1, characterized in that the drive unit (4, 5, 18) further comprises an electric drive motor (4). Door operator (1) according to claim 2, characterized in that the electrical switch (3, 3 ') is coupled to the drive motor (4) such that the electrical switch (3, 3') upon actuation of the drive motor (4) on a switches off predetermined opening position of the door leaf. Door operator (1) according to claim 2, characterized in that • The drive motor (4) is operated as a generator in driving the door leaf in the at least one direction, so that the drive motor (4) opposes the movement of the door leaf a predetermined resistance, and • the electrical switch (3, 3 ') is connected to the drive motor (4) in such a way that upon actuation of the electrical switch (3, 3') the predetermined resistance of the drive motor is changed. Door operator (1) according to claim 4, characterized in that the electrical switch (3, 3 ') is connected in series between an electrical load resistor (R ₂ ) and the drive motor (4). Door operator (1) according to one of claims 3 to 5, characterized in that the actuation of the electrical switch (3, 3 ') takes place in the end impact of the door leaf. Door operator (1) according to one of the preceding claims, characterized in that • The drive unit (4, 5, 18) further comprises a spring energy store (18) with a closing spring (19), the - is operatively connected to the closer shaft (2), - Is stretched over an opening movement of the door leaf and - Is relaxed over a closing movement of the door leaf, and • the mechanical operative connection between the closing spring (19) and the closer shaft (2) is connected. Door operator (1) according to claim 7, characterized in that the movable member (5) by means of a flap carriage (5) is formed, which is mechanically operatively connected to a rod which extends through the closing spring (19) therethrough. Door operator (1) according to claim 8, characterized in that • A signal plunger (6) on the flap carriage (5) is arranged mitbewegbar with this, and • the electrical switch (3) via a switch receptacle (7) in such or on the door actuator (1) is arranged, that the electrical switch (3) by the movement of the signal plunger (6) of the signal plunger (6) is actuated. Door operator (1) according to claim 9, characterized in that the signal plunger (6) has an actuating lug (8) which cooperates with a triggering element (9) of the electrical switch (3) for its actuation. Door operator (1) according to claim 9 or 10, characterized in that the switch receptacle (7) • by means of receiving elements (10, 34) on a base body of the door drive (1) and / or on the spring force accumulator (18) is arranged stationary and • with the electrical switch (3) in the direction of movement of the signal plunger (6) is adjustable, wherein a respective position of the electrical switch (3) with respect to the main body or the spring energy accumulator (18) corresponds to an associated opening angle of the door leaf. Door operator (1) according to claim 11, characterized in that the switch receptacle (7) elongated holes (15, 33), • in which the receiving elements (10, 34) are received longitudinally movable and • extending substantially in the direction of movement of the signal plunger (6). Door operator (1) according to one of claims 8 to 12, characterized in that • The spring force accumulator (18) along the direction of movement of the flap carriage (5) or the rod extends and • In the region of a free and the flap carriage (5) facing away from the end of the rod, a plunger (11) is arranged, which cooperates with an electrical switch (3 '). Door operator (1) according to claim 13, characterized in that • the operative connection between the plunger (11) and the electrical switch (3 ') comprises a rocking element (12) which is received in a rocking axis (13) so as to be pivotable in the door operator (1), • The rocker element (12) has a first Betätigungsanformung (26) which is articulated by the plunger (11), and • The rocker element (12) has a second Betätigungsanformung (27), which serves to trigger the electrical switch (3 '). Door operator (1) according to claim 14, characterized in that • the electrical switch (3 ') by means of a switch receptacle (16) in the door actuator (1) is received and • the switch receptacle (16) with the electrical switch (3 ') in a position relative to the rocker element (12) is adjustable, wherein a respective position of the electrical switch (3') with respect to the rocker element (12) an associated opening angle of the door leaf equivalent. Door operator (1) according to claim 14 or 15, characterized in that the rocker element (12) by means of a spring element (14) is biased about the rocking axis (13) such that the first Betätigungsanformung (26) in the direction of plunger (11) is urged , Door operator (1) according to one of claims 14 to 16, characterized in that the switch receptacle (16) • is fixedly arranged on a system support (17) of the door drive (1) and • with the electric switch (3 ') in the direction of movement of the plunger (11) is adjustable, wherein a respective position of the electrical switch (3') with respect to the rocker element (12) corresponds to an associated opening angle of the door leaf. Door operator (1) according to one of the preceding claims, characterized in that • the door operator (1) has a locking device with which the door leaf is lockable in an open position, and • An actuation of the locking device by means of the electrical switch (3, 3 ') is controlled. Door operator (1) according to one of the preceding claims, characterized in that • the door operator (1) has a system support (17) for forming the basic structure and At least the electrical switch (3, 3 '), the switch receptacle (7, 16) and / or the rocker element (12) is or are attached to the system carrier (17).

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