DE202004015472U1 - door drive - Google Patents

Abstract

Door drive for a swing door (2) consisting of a door frame (3) and a door leaf (5) which is articulated on the door frame (3) about a pivot axis (4),
with a drive unit (6) and a force transmission element (7),
wherein the drive unit (6) is arranged on the door frame (3) or the door leaf (5) and the force transmission element (7) is correspondingly arranged on the door leaf (5) or on the door frame (3),
wherein the drive unit (6) at a distance from the pivot axis (4) of the door leaf (5) is directly coupled to the force transmission element (7) and
wherein the door leaf (5) can be moved automatically by means of the drive unit (6),
characterized,
that the drive unit (6) has an electric drive motor (8) for motorized opening and / or closing of the door leaf (5).

Description

The The present invention relates to a door drive for a swing door consisting from a door frame and one on the door frame about a pivot axis hinged door leaf with the features of Preamble of claim 1 and a drive unit, in particular for one such door operator, with the features of the preamble of claim 64.

Out In practice, door drives are used known in which a drive unit for automatically closing the door panel a swing door provided is. Such a drive unit is usually arranged on the door frame, while a power transmission element coupled to the drive unit for power transmission on the door leaf is arranged. The drive unit has a spring, which when opening the door panel is stretched towards the closed position of the door leaf. The Tension the spring when opening of the door leaf takes place via a pivoting lever, which is connected to the power transmission element by means of a sliding guide is coupled. Will the door leaf After opening no further in the open Hold the position, the spring relaxes and closes the power transmitting Coupling between the pivot lever of the drive unit and the power transmission element the door leaf.

Furthermore, it is known from the prior art to provide a door drive as an electromechanical door opener ( DE 297 22 415 U1 ). In addition to the spring for closing the door leaf, the drive unit of the door drive has a drive motor for opening the door leaf. The coupling between the drive unit and the power transmission element takes place by means of an additional lever arrangement.

outgoing The invention is based on the door drive known from practice the problem underlying the door operator to optimize for ease of use and at the same time to maintain a simple arrangement. A drive unit is also intended be optimized in terms of structure and functionality.

The The aforementioned problem is with a door operator with the features of the preamble of claim 1 by the features of the characterizing Part of claim 1 solved. Advantageous further developments are the subject of dependent claims 2 to 63. A correspondingly optimized drive unit with the features of the preamble of claim 64 results from the features of the characterizing part of claim 64. Advantageous further developments are the subject of the subclaims 65 to 67.

A basic idea of the present invention is the drive unit to be provided with an electric drive motor without this inevitably a change the actual coupling between the drive unit and the power transmission element is required. this makes possible a simple construction of the door drive and an inexpensive implementation a motorized operation of the door operator. It is also possible the drive motor for both motorized opening and motorized Closing the door panel to use so that in a spring for the drive unit is not absolutely necessary and therefore no spring force to overcome even with manual adjustment is.

For a comfortable Operation of the door operator it is further advantageous if the drive unit has control electronics with which the drive motor can be switched on and off. The Control electronics can then have additional features, which serve to optimally control the door drive. these are for example position detection means, speed monitoring, Programmability and wireless remote control.

there is particularly advantageous if the speed monitoring is control-related is realized in that the Drive motor for switched off for a defined period of time and during this time the generator voltage of the trailing drive motor measured and as the speed equivalent Signal is evaluated. This is also the subject of a sibling Claim.

In particular It is advantageous if the drive unit has a slip clutch having. The slip clutch is between the drive motor and the power transmission element arranged that a manual adjustability of the door leaf essentially without retroactive effect guaranteed on the drive motor is. The slip clutch ensures that the power transmission chain between drive motor and power transmission element at most with manual adjustment of the door leaf is subjected to a force that is the transmission torque of the slip clutch equivalent.

at a particularly preferred embodiment, its structure is particularly simple, even without problems afterwards can be assembled and arranged discreetly, is the power transmission element designed as a rack, while the drive unit has a drive pinion as the drive element. The drive pinion and the rack form as a power transmission Coupling a gearbox connection. The drive unit is preferably here on the door leaf and the rack on the door frame arranged as a result for opening of the door leaf an optimal lever arm is available.

in the The following is the invention with reference to the drawing to preferred embodiments explained in more detail. in the In the course of these explanations are further refinements and developments and further features, Properties, aspects and advantages of the invention also explained. In the drawing shows

1 2 shows a schematic, perspective illustration of a first exemplary embodiment of a door drive according to the invention for a swing door,

2 2 shows a schematic illustration of a second exemplary embodiment of a door drive according to the invention,

3 a section through the power transmission element 2 .

4 2 shows a schematic, perspective illustration of a third exemplary embodiment of a door drive according to the invention,

5 the door operator 4 from above,

6 a section through the drive unit 5 .

7 a section through the power transmission element 4 .

8th 1 shows a schematic illustration of a fourth exemplary embodiment of a door drive according to the invention,

9 is a schematic representation of a fifth embodiment of a door drive according to the invention.

In the figures of the drawing are the same or similar Parts used the same reference numerals. This is meant to indicate be that corresponding or comparable properties and benefits are achieved, too if a repeated description of these parts is omitted.

1 shows a door operator 1 for a swing door 2 in a perspective, schematic representation. The swing door 2 consists of a door frame 3 and one on the door frame 3 about a pivot axis 4 hinged door leaf 5 , Furthermore, the swing door 2 still other components, such as. B. hinges and a door lock, which will not be discussed in more detail below, however, unless they are relevant to the present invention.

The door operator 1 has a drive unit 6 for the swing door 2 and a power transmission element 7 on. The drive unit 6 is here on the door frame 3 arranged. You can also on the door leaf 5 be arranged. The power transmission element 7 is corresponding on the door leaf 5 arranged. It is located on the door frame 3 when the drive unit 6 on the door leaf 5 is arranged. This freedom with regard to the arrangement of the drive unit 6 and the power transmission element 7 applies accordingly to the other exemplary embodiments ( 2 to 9 ). With regard to the power supply to the drive unit 6 has the arrangement of the drive unit 6 on the door frame 3 of course advantages.

The drive unit 6 is from the swivel axis 4 of the door leaf 5 spaced and directly with the power transmission element 7 coupled to transmit power. Between the drive unit 6 and the power transmission element 7 In this respect, no further lever arrangement, for example in the form of a knee joint mechanism, as is required in the prior art, is arranged. The door leaf 5 is thus by means of the drive unit 6 automatically movable, ie around the swivel axis 4 relative to the door frame 3 pivotable. So with this arrangement the mobility of the door leaf 5 is possible, it is necessary that at the power transmission point between the drive unit 6 and the power transmission element 7 an angle change is possible. Depending on the design, however, the necessary change in angle can be so small that it can be achieved by a corresponding play at the power transmission point. The respective implementation of this angular variability is explained in more detail below.

The drive unit 6 has an electric drive motor 8th with which the door leaf 5 can be opened or closed by a motor, in the present case it can be opened and closed by a motor. In addition, an additional spring (not shown) can be provided depending on requirements and, if necessary, in order to comply with safety regulations, in order also in the event of an emergency, ie if the drive motor fails 8th in particular closing the door leaf 5 to enable.

The drive unit 6 in the exemplary embodiments described here ( 1 to 9 ) of the door operator 1 and preferably control electronics 9 with which the drive motor 8th can be switched on and off. The control electronics 9 In this respect, it serves for a simple and possibly controlled actuation of the door drive 1 ,

Here and preferably the control electronics 9 a position detection means 9 ' for detecting the position of the door leaf 5 on to the door operator 1 as gently as possible and therefore also quiet in its end positions, i.e. with the door leaf open 5 and closed door leaf 5 , to stop. The position detection of the door leaf 5 does not have to be on the door leaf 5 done yourself, son That can also be done on other elements that allow conclusions about the position of the door leaf 5 allow.

If the control electronics 9 during an adjustment process of the door leaf 5 , for example due to an obstacle, the drive motor 8th switches off, the position detection means recognizes 9 ' directly or, shown here indirectly, the position of the door leaf 5 to continue and end the adjustment process after removing the obstacle.

The position detection means 9 ' is particularly useful as an incremental encoder in control electronics 9 integrated.

The position detection means 9 ' is especially designed so that manual operation, i.e. pressing or pulling on the door leaf 5 , is detectable. The control electronics preferably recognize 9 by means of the position detection means 9 ' the type of actuation of the door leaf 5 (Pushing or pulling).

Furthermore, the control electronics 9 be designed so that they drive the engine 8th with manual actuation of the door leaf 5 switches on accordingly. The door operator 1 insofar moves the door leaf 5 to the corresponding end position or acts as a support for the manual movement of the door leaf 5 ,

The control electronics 9 is also designed so that the door leaf is blocked 5 is detectable. This can be done, for example, by measuring a current of the drive motor 8th take place (current monitoring). The blocking of the door leaf is preferred 5 but detected by the fact that the drive motor 8th is switched on, the position detection means 9 ' but no change in position is detected. The control electronics 9 evaluates both signals and switches when the door leaf is blocked 5 the drive motor 8th from. This is an interesting solution, especially if a slip clutch is present (see below).

The control electronics 9 here and preferably has a means for monitoring the speed of the drive motor 8th on. The speed monitoring serves to determine the speed of the drive motor 8th to regulate. Such a regulation is particularly desirable with regard to reaching the end positions. The control electronics 9 can the speed of the drive motor shortly before reaching the respective end position 8th reduce in order to reach the end position as gently and quietly as possible.

Various means for speed monitoring, such as Hall sensors, are known from the prior art. Here and preferably no additional element is used, but instead the speed monitoring is implemented in terms of control technology. This happens because the drive motor 8th switched off for a defined period of time and during this time the generator voltage of the trailing drive motor 8th is measured and evaluated as a speed-equivalent signal. The generator voltage of the drive motor 8th results from the fact that this is still running due to the previous operation. The accuracy that can be achieved with this method with regard to the detection of the speed is for the control of the drive motor 8th sufficient. The speed monitoring of the drive motor 8th takes place here and preferably periodically, but can also take place at statistically random time intervals. The drive motor should be switched on for approximately 15 to 25 ms and switched off for approximately 0.5 to 5 ms. Here and preferably is the drive motor 8th 20 ms on and 1 ms off.

The control electronics 9 can also and / or additionally in other ways than by position detection means 9 ' to be controlled. For example, it is possible to use the drive unit 6 to work in the so-called block mode. The current consumption of the electric drive motor 8th or another parameter of the electric drive motor 8th monitors and the electric drive motor 8th switched off when certain limit values, possibly for certain periods, are exceeded.

Furthermore, the control electronics 9 programmable so that the drive motor 8th can be controlled according to the programming. Programming the control electronics 9 can consist in the fact that various parameters for the adjustment process are specified externally, such as the duration of an adjustment process, a bridging time in which the door leaf 5 held in the open position before closing, etc. Programming can also be done by the door drive 1 the door leaf 5 a first time from the closed position to the open position or vice versa and learns the movement process and in particular the speed control for the drive motor 8th adapts to this movement. This adaptation can take place, for example, via a time control, ie the control electronics 9 controls the drive motor 8th in terms of the time required for the movement. The time control can then also be used to smoothly approach the end positions.

In addition, the control electronics 9 remote control here and preferably wireless. The remote control can be moved on the one hand sensors are made so that the door leaf 5 is automatically adjusted when the motion sensor detects motion and / or on the other hand by means of a transponder, a remote control or the like. Motion sensors can also be foot mats, light barriers or the like. The control electronics can be used to implement remote control 9 eg have an infrared (IR), radio, Bluetooth, GSM or microwave interface. Such interfaces can also be integrated in a telecommunications system, for example as part of a central object control. The remote operability relates to manual actuation by means of a remote control or the like, as well as to a control which can be carried out, among other things, by the movement sensors.

The drive motor 8th is in the present exemplary embodiments ( 1 to 9 ) designed as a DC motor, since such a motor is particularly small and inexpensive to implement. If necessary, it can also be designed as an AC motor. The DC motor can be supplied with electricity by means of a battery / rechargeable battery arrangement or by connection to AC mains voltage. A battery / rechargeable battery arrangement can also be provided in addition to the mains connection in order to supply electrical energy for actuating the door drive in an emergency, ie in the event of a mains supply failure 1 to provide. For the mains connection of a DC motor, it is necessary that the drive unit 6 has a rectifier circuit. The rectifier circuit is connected upstream of the DC motor on the mains side. The DC motor can then be connected directly to the AC line voltage via the rectifier circuit.

For manual adjustability of the door leaf 5 essentially without any effect on the drive motor 8th to ensure the drive unit 6 a slip clutch 10 on that between the drive motor 8th and the power transmission element 7 is arranged. The manual adjustability of the door leaf 5 essentially without any effect on the drive motor 8th naturally refers to the fact that forces exceeding the transmission torque occur when the door leaf is adjusted manually 5 not on the drive motor 8th Act. The transmission torque is the torque that is necessary to the slip clutch 10 trigger, that is to say from static friction to sliding friction. The slipping clutch acts upon the power chain with a force corresponding to the transmission torque 10 not prevented. Accordingly, it is advantageous to use the slip clutch 10 to be adjustable with regard to the transmission torque, so that an adaptation to the actually required circumstances can take place.

For optical reasons, it is advantageous to use the drive unit 6 with a housing 11 or to provide a cover. The housing 11 or the cover in this case has at least one opening for a drive element 12 the drive unit 6 or, depending on the version, for the power transmission element 7 on. Additionally or alternatively, the housing has 11 or the cover has an opening through which the slip clutch 10 is adjustable.

At the in 1 shown embodiment of the door drive 1 is the drive unit 6 with a lateral distance from the swivel axis 4 of the door leaf 5 around one to the pivot axis 4 about parallel axis 4 ' pivoted. Furthermore, the power transmission element 7 pivoted. This arrangement allows the power transmission element 7 to the movement of the drive unit in a particularly simple manner 6 when adjusting the door leaf 5 adjust while doing the power coupling between the drive unit 6 and the power transmission element 7 maintained. The swiveling also serves to implement the angular changeability at the power transmission point. Correspondingly adapted arrangements can also be used for the power transmission element 7 or the drive element 12 result.

In the embodiment of the door operator 1 according to 1 has the drive unit 6 as a drive element 12 a swivel lever 12a on. The swivel lever 12a is roughly parallel to the plane of the door leaf 5 and approximately perpendicular to the pivot axis 4 of the door leaf 5 aligned. Due to the lateral distance of the swivel axis 4 of the door leaf 5 from the drive axle of the drive unit 6 results when the door leaf is pivoted 5 an angle change of the pivot lever 12a opposite the door leaf 5 which is kept within relatively narrow limits.

The drive unit 6 is here and preferably ( 1 ) on the door frame 3 arranged and the power transmission element 7 accordingly on the door leaf 5 , The power transmission element 7 here has a sliding guide for the swivel lever 12a on. Instead of the sliding guide, the force-transmitting coupling between the pivot lever 12a and the power transmission element 7 also in other ways, e.g. B. can be realized by means of a roller guide.

The drive motor acts when actuated 8th via a gearbox and the intermediate slip clutch 10 on the swivel lever 12a and turn it. The swivel lever 12a slides in the sliding guide of the power transmission element 7 and pushes (during the opening process) or pulls (during the closing process) over the power transmission element 7 the door leaf 5 in the appropriate direction.

The position detection means 9 ' the tax ereinheit 9 is with the in 1 shown embodiment preferably with the pivot lever 12a coupled and detects its location with the position of the door leaf 5 corresponds.

In the exemplary embodiments described below ( 2 to 9 ) applies in particular to the control arrangement 9 the description of the 1 accordingly, unless otherwise described.

The force-transmitting coupling between a drive element 12 the drive unit 6 and the power transmission element 7 is designed as a gear connection in the exemplary embodiments described below.

This in 2 shown embodiment of the door drive 1 points as a drive element 12 the drive unit 6 a drive spindle 12b on that by means of the drive motor 8th is drivable. In this embodiment, the drive unit 6 with a lateral distance from the swivel axis 4 of the door leaf 5 around one to the pivot axis 4 about parallel axis 4 ' pivoted. Furthermore, the power transmission element 7 , as already in the embodiment, arranged pivotally. The adjustment of the door leaf 5 takes place analogously to the first embodiment, by the drive spindle 12b from the drive motor 8th is turned and the spindle nut correspondingly on the drive spindle 12b shifts. The design of the force transmission element is not shown as a variant 7 as a spindle nut. The position detection means 9 ' the control unit 9 is arranged here so that it is the location of the drive unit 6 detected.

In the variant shown here is the slip clutch 10 Part of the power transmission element 7 ( 3 ). The slip clutch 10 has a braked pinion 13 on that together with the drive spindle 12b forms the gear connection. The pinion 13 is through a brake pad 14 braked by means of a disc spring 15 against the pinion 13 is pressed. The disc spring 15 is from a bolt 16 held, the same time setting the transmission torque of the slip clutch 10 serves.

The pinion 13 is on the power transmission element 7 hinged. The pinion is specific here 13 on the double-shell housing 7 ' of the power transmission element 7 stored. So that both a motorized and a manual adjustment of the door leaf 5 possible is the flank position of the pinion 13 the slip clutch 10 and the thread pitch of the drive spindle 12b matched accordingly so that self-locking does not occur.

The power transmission element 7 also has a counter bearing 17 for the drive spindle 12b on that the pinion 13 is arranged substantially opposite. The opposite arrangement is the optimal design with regard to the forces that occur. The counter bearing 17 serves to guide the drive spindle 12b , In addition, the counter bearing 17 be made elastic, so that it allows a certain adjustment to the change in angle at the power transmission point. This is the counter bearing 17 as a pressure roller, preferably made of an elastically deformable material, here made of rubber, and / or in turn also on the housing 7 ' of the power transmission element 7 elastically resilient.

As already explained above, in the exemplary embodiment shown here there is a change in angle between the force transmission element 7 and drive spindle 12b possible. In addition, as described above, the drive unit 6 pivoted. The pivoting bearing of the entire drive unit 6 enables in connection with the swiveling power transmission element 7 a rigid connection between the drive spindle 12b and the drive motor 8th and is therefore preferred in terms of design. It is sufficient if the drive unit 6 can be swiveled within certain limits, namely only as far as it is for opening the door leaf 5 is required. Usually about 90% swiveling for the drive unit 6 sufficient.

4 to 7 show a door drive according to the invention 1 , in which the power transmission element 7 as a rack 7a is executed. The drive unit 6 points as a drive element 12 a drive pinion 12c on. The drive sprocket 12c forms with the rack 7a the gearbox connection. Next to the drive pinion 12c has the drive unit 6 also a counter bearing 17 on that the drive sprocket 12c the drive unit 6 is arranged substantially opposite. The counter bearing 17 is also in this embodiment as a pressure roller, preferably made of an elastically deformable material, here made of rubber.

In addition, the drive unit has 6 the slip clutch 10 on ( 6 ). The drive sprocket 12c is by means of a brake pad 14 braked. The slip clutch 10 is realized in that the drive pinion 12c between the brake pad 14 and a thrust washer 14 ' is arranged between a counter bearing 15 ' and a disc spring 15 be held under spring pressure. The disc spring 15 is done by an adjusting screw 16 held by means of the transmission torque of the slip clutch 10 is adjustable. The counter bearing 15 ' , the brake pad 14 who have favourited the thrust washer 14 ' and the adjusting screw 16 are here and preferably so on the drive shaft 8th' of the drive motor 8th stored that they are driven by this. This is the drive wave 8th' executed square. The drive sprocket 12c and the brake pad 14 are using an adapter 8th" from the drive shaft 8th' decoupled. The drive sprocket 12c is so far only by the clamping effect between the thrust washer 14 ' and the counter bearing 15 ' taken as long as the transmission torque is not exceeded.

In the embodiment shown here and preferred in this respect ( 4 to 7 ) is the drive unit 6 on the door leaf 5 and the rack 7a on the door frame 3 arranged. Such an arrangement enables an optimal design with regard to the lever arm for opening the door leaf 5 , Furthermore, the power transmission element is here 7 with a lateral distance from the swivel axis 4 of the door leaf 5 around one to the pivot axis 4 about parallel axis 4 ' pivoted to ensure the angular variability.

To when connecting the drive motor 8th To be independent of the power network from free hanging cables here too, the rack shows 7a live conductor 18 on, and the drive unit 6 has corresponding pantographs 19 ( 7 ). The rack 7a points for each live conductor 18 a groove 20 in which the respective live conductor 18 is arranged protected. The live conductor 18 is designed for example as a metal strip in the groove 20 the rack 7a is inserted. But it can also by a corresponding metallic coating of the rack 7a be educated. However, the condition is that the current-carrying conductor 18 opposite the rack 7a is otherwise isolated. This can be achieved by arranging an insulating material between the rack 7a and the live conductor 18 be realized or by executing the rack 7a made of insulating material, for example plastic. In the present case there are two live conductors 18 provided on the top and bottom of the rack 7a in one groove each 20 are arranged. The pantograph 19 are designed as sliding contacts. This type of power supply is in particular in the case of a low-voltage power supply from one to the door frame 3 arranged power supply from expedient. Then the largely contact-protected arrangement of the conductors shown here is sufficient 18 in the grooves 20 ,

The position detection means 9 ' is preferably implemented as an incremental encoder in the exemplary embodiment described above and in the following exemplary embodiments. The position detection means 9 ' is with the drive element 12 , especially the drive pinion 12c , coupled. Because of the slip clutch 10 and the gear connection drive pinion 12c / Rack 7a enables the movement of the drive element 12 a conclusion about the position of the door leaf even when operated manually 5 ,

8th shows a further embodiment of a door drive 1 for a swing door 2 , In this embodiment, the power transmission element 7 as a circular rack 7b executed. As a drive element 12 has the drive unit 6 a drive pinion 12c on that together with the circular rack 7b forms the gear connection. Between the pinion 12c and the drive motor 8th is a slip clutch 10 arranged, which is not shown here.

The drive unit 6 has a counter bearing 17 for the circular rack 7b on that the drive sprocket 12c the drive unit 6 is arranged substantially opposite. The counter bearing 17 is again designed as a pressure roller, preferably made of an elastically deformable material, here made of rubber.

The circular rack 7b is arranged so that the center of the circle of the circular rack 7b with the pivot axis of the door leaf 5 coincides. Furthermore, the circular rack 7b here and preferably on the door leaf 5 fixed while the drive unit 6 on the door frame 3 is arranged. This enables the circular rack 7b with the door leaf closed 5 Arrange completely concealed by the circular rack 7b immersed in the door rebate or the door lining.

The toothing of the circular rack 7b is arranged on the outer circumference in the illustrated embodiment. This provides enough space for the drive unit 6 completely in the door frame 3 to be sunk.

At the in 9 illustrated embodiment of a door operator 1 is the power transmission element 7 as a link chain 7c executed with a toothing. A link chain in this sense is a non-rigid element that is composed of several links that are coupled together. The links thus form the link chain 7c , It is crucial that the link chain 7c can act in a force-transmitting manner in at least one position of its limbs on pressure.

The drive unit 6 points as a drive element 12 a drive pinion 12c on that with the interlocking of the link chain 7c forms the gear connection. A slip clutch 10 is also provided here, but not shown.

The links in the link chain 7c are pivotable against each other. The links in the link chain are for power transmission 7c at least in sections in a power transmission unit adjustable, in which several links together an arcuate section 21 form. Section by section means that several links can be adjusted together into the power transmission position, other links in the link chain 7c but can take a position other than the power transmission position. The arcuate section is essential for the power transmission 21 , In the power transmission position, the arcuate section has 21 the link chain 7c the interlocking of the individual links as a coherent interlocking. Here and preferably, this toothing is designed as an internal toothing.

In order to guide the links into the power transmission position, the drive unit has 6 a guide element 22 on. The guide element 22 is the drive pinion 12c arranged opposite each other. Depending on the design, the guide element 22 but also elsewhere in the drive unit 6 be arranged.

The links in the link chain 7c alternately have recesses 23 on their flanks or an engagement section 24 on its upper side for engagement with the respectively adjacent links in the power transmission position. The recesses 23 In this respect, two links correspond to the engagement section 24 of a link arranged between them.

The power transmission position of the link chain 7c is based on a closed door leaf 5 and, as shown here, when arranging the link chain 7c on the door leaf 5 , achieved in that the drive pinion 12c one link in the link chain 7c one after the other in the direction of the open position of the door leaf 5 drives over the corresponding toothing and the guide element 22 at the same time ensures that the position necessary for the power transmission position is reached. The next link in the link chain 7c then follows the first link, the recess 23 one link with the engaging portion 24 the other link comes to the plant. Breaking out of the power transmission position is not possible because the adjacent links of the link chain 7c adjoin each other on their inner circumference and also come into contact there. The limbs are pressed exactly into this position during the adjustment by the force acting on them, so that it is not possible to break out of this position. When moving in the opposite direction, the links become through the guide element 22 held in the power transmission position until the drive pinion 12c have happened. They can then leave the power transmission position and can limit the housing, for example 11 be moved out of the power transmission position and rolled up to a certain extent.

The links in the link chain 7c are here and preferably made of plastic, but can also be made of other materials with sufficient rigidity.

For the two last-described exemplary embodiments ( 8th . 9 ) it is advantageous if the drive unit 6 is arranged essentially in the door rebate or the upper door frame. The door operator 1 is thus almost completely hidden.

Already from the prior art explained at the beginning ( DE 297 22 415 U1 ) it is known that the drive unit 6 also embedded in the upper edge of the door leaf 5 can arrange, if you build them sufficiently narrow and elongated. Especially with a circular rack 7b as a power transmission element 7 can such a drive unit 6 with a drive pinion 12c as a drive element 12 can be used advantageously. However, the circular rack is of course then available 7b opposite the door frame 3 in the room.

For all embodiments, it is advantageous if the drive unit 6 is executed symmetrically. This enables the door operator to be used 1 for both right-opening and left-opening door leaves 5 without changing the design. Only the assembly is reversed.

For door drives 1 where the drive unit 6 on the door leaf 5 is arranged is a suspension device 25 (see. 5 . 6 ) provided with which the drive unit 6 on the door leaf 5 is attachable. A suspension device is preferred 25 with two bow-shaped brackets 26 , The drive unit 6 is then with the bow-shaped brackets 26 at the top of the door leaf 5 attachable, with screws from the top into the door leaf 5 extend. The hanger 25 leaves no visible traces on the visible surfaces of the door leaf 5 ,

If the swing door 2 a door latch or a door latch, it is advantageous if this also by means of the control electronics 9 can be released to then open the door. In particular, the door latch or the door latch is arranged and designed such that it is controlled by the control electronics 9 electrically, but also preferably by means of manual actuation, preferably a door handle, can be released.

Generally the door operator can 1 , as already described, only to support manual opening of the door leaf 5 serve.

The electrical connection also allows the integration of a Lighting device.

The invention further relates to a door operator 1 a drive unit 6 , especially for a door operator 1 , The drive unit 6 has a drive motor 8th , a transmission, a drive element 12 and control electronics 9 on. The drive element 12 is from the drive motor 8th drivable via the gearbox. The control electronics 9 is used to control the drive motor 8th and turns it on and off.

The control electronics 9 also has a means for monitoring the speed of the drive motor 8th on. The means for monitoring the speed is implemented in terms of control technology in that the drive motor 8th switched off for a defined period of time and during this time the generator voltage of the trailing drive motor 8th is measured and evaluated as a speed-equivalent signal.

For the drive unit 6 the description of the drive unit applies 6 of the door operator 1 according to the embodiment in 1 to which reference is made accordingly. Such a drive unit 6 can not only be used with a door operator 1 deploy. It can be used in other cases, for example for roller shutter or awning drives.

Claims (67)

Door operator for a swing door ( 2 ) consisting of a door frame ( 3 ) and one on the door frame ( 3 ) around a swivel axis ( 4 ) hinged door leaf ( 5 ), with a drive unit ( 6 ) and a power transmission element ( 7 ), the drive unit ( 6 ) on the door frame ( 3 ) or the door leaf ( 5 ) is arranged and the power transmission element ( 7 ) correspondingly on the door leaf ( 5 ) or on the door frame ( 3 ) is arranged, the drive unit ( 6 ) from the swivel axis ( 4 ) of the door leaf ( 5 ) directly spaced from the power transmission element ( 7 ) is coupled to transmit power and the door leaf ( 5 ) by means of the drive unit ( 6 ) can be moved automatically, characterized in that the drive unit ( 6 ) an electric drive motor ( 8th ) for motorized opening and / or closing of the door leaf ( 5 ) having. Door drive according to claim 1, characterized in that the drive unit ( 6 ) control electronics ( 9 ) with which the drive motor ( 8th ) can be switched on and off. Door drive according to claim 2, characterized in that the control electronics ( 9 ) a position detection means ( 9 ' ), preferably in the form of an integrated incremental encoder. Door drive according to claim 3, characterized in that a manual actuation of the door leaf ( 5 ) by means of the position detection means ( 9 ' ) is detectable. Door drive according to claim 4, characterized in that the control electronics ( 9 ) the drive motor ( 8th ) when the door leaf is operated manually ( 5 ) switches on. Door drive according to one of claims 3 to 5, characterized in that a blocking of the door leaf ( 5 ) by means of the control electronics ( 9 ) can be detected in that the drive motor ( 8th ) is switched on, the position detection means ( 9 ' ) but no change in position was detected. Door drive according to one of claims 2 to 6, characterized in that the control electronics ( 9 ) a means for monitoring the speed of the drive motor ( 8th ) having. Door drive according to claim 7, characterized in that the means for speed monitoring is implemented in terms of control technology in that the drive motor ( 8th ) switched off for a defined period of time and during this time the generator voltage of the trailing drive motor ( 8th ) is measured and evaluated as a speed equivalent signal. Door drive according to one of claims 2 to 8, characterized in that the control electronics ( 9 ) programmable and the drive motor ( 8th ) can be controlled according to the programming. Door drive according to claim 9, characterized in that the control electronics ( 9 ) is programmable in such a way that the drive motor ( 8th ) is controlled by a timer. Door drive according to claim 10, characterized in that the time control of the drive motor ( 8th ) takes place in such a way that the end positions are approached gently. Door drive according to one of claims 2 to 11, characterized in that the control electronics ( 9 ) can be remotely controlled wirelessly. Door drive according to claim 12, characterized in that the control electronics ( 9 ) has an IR, radio, Bluetooth, GSM or microwave interface to enable remote control. Door drive according to one of claims 2 to 13, in particular according to claim 12 or 13, because characterized in that the control electronics ( 8th ) a motion sensor is assigned. Door drive according to one of the preceding claims, characterized in that the drive motor ( 8th ) is designed as a DC motor. Door drive according to claim 15, characterized in that the drive unit ( 6 ) has a rectifier circuit connected upstream of the DC motor on the line side, via which the DC motor can be connected directly to line AC voltage. Door drive according to one of the preceding claims, characterized in that the drive unit ( 6 ) a slip clutch ( 10 ) and that the slip clutch ( 10 ) between the drive motor ( 8th ) and power transmission element ( 7 ) is arranged that a manual adjustability of the door leaf ( 5 ) essentially without any effect on the drive motor ( 8th ) is guaranteed. Door drive according to claim 17, characterized in that the slip clutch ( 10 ) is adjustable with regard to the transmission torque. Door drive according to one of the preceding claims, characterized in that the drive unit ( 6 ) with a housing ( 11 ) or a cover is provided. Door drive according to claim 19 , characterized in that the housing ( 11 ) or the cover at least one opening for a drive element ( 12 ) the drive unit ( 6 ) or for the power transmission element ( 7 ) and / or an opening for adjusting the slip clutch ( 10 ) having. Door drive according to one of the preceding claims, characterized in that on the door frame ( 3 ) the drive unit ( 6 ) or the drive element ( 12 ) the drive unit ( 6 ) or the power transmission element ( 7 ) with a lateral distance from the swivel axis ( 4 ) of the door leaf ( 5 ) around the swivel axis ( 4 ) approximately parallel axis ( 4 ' ) is pivotally mounted. Door drive according to claim 21, characterized in that the force transmission element ( 7 ) on the door leaf ( 5 ) is pivotally mounted. Door drive according to claim 22, characterized in that the drive unit ( 6 ) as a drive element ( 12 ) a swivel lever ( 12a ) having. Door drive according to claim 23, characterized in that the pivot lever ( 12a ) approximately parallel to the level of the door leaf ( 5 ) and approximately perpendicular to the swivel axis ( 4 ) of the door leaf ( 5 ) is aligned. Door drive according to claim 23 or 24, characterized in that the force transmission element ( 7 ) a sliding guide for the swivel lever ( 12a ) having. Door drive according to one of claims 1 to 24, characterized in that the force-transmitting coupling of a drive element ( 12 ) the drive unit ( 6 ) with the power transmission element ( 7 ) is designed as a gear connection. Door drive according to claim 26, characterized in that the drive unit ( 6 ) as a drive element ( 12 ) a drive spindle ( 12b ) which, by means of the drive motor ( 8th ) can be driven. Door drive according to claim 27, characterized in that the force transmission element ( 7 ) is designed as a spindle nut. Door drive according to claim 17 and possibly one of claims 18 to 28, characterized in that the slip clutch ( 10 ) Part of the power transmission element ( 7 ) is. Door drive according to claim 29, characterized in that the slip clutch ( 10 ) a braked pinion ( 13 ) and that the pinion ( 13 ) together with the drive spindle ( 12b ) forms the gear connection. Door drive according to claim 30, characterized in that the pinion ( 13 ) on the power transmission element ( 7 ) and that the flank of the pinion ( 13 ) of the slip clutch ( 10 ) and the thread pitch of the drive spindle ( 12b ) are coordinated. Door drive according to claim 30 or 31, characterized in that the force transmission element ( 7 ) a counter bearing ( 17 ) for the drive spindle ( 12b ) and that the counter bearing ( 17 ) the pinion ( 13 ) is arranged essentially opposite. Door drive according to claim 32, characterized in that the counter bearing ( 17 ) as a pressure roller, preferably made of an elastically deformable material, in particular rubber. Door drive according to one of claims 27 to 33, characterized in that the drive unit ( 6 ) is pivotally mounted. Door drive according to claim 26, characterized in that the force transmission element ( 7 ) as a rack ( 7a ) is executed. Door drive according to claim 35 characterized in that the drive unit ( 6 ) as a drive element ( 12 ) a drive pinion ( 12c ) and that the drive pinion ( 12c ) with the rack ( 7a ) forms the gear connection. Door drive according to claim 36, characterized in that the drive unit ( 6 ) a counter bearing ( 17 ) for the rack ( 7a ) and that the counter bearing ( 17 ) the drive pinion ( 12c ) the drive unit ( 6 ) is arranged essentially opposite. Door drive according to claim 37, characterized in that the counter bearing ( 17 ) as a pressure roller, preferably made of an elastically deformable material, in particular rubber. Door drive according to one of claims 35 to 38, characterized in that the drive unit ( 6 ) on the door leaf ( 5 ) and the rack ( 7a ) on the door frame ( 3 ) is arranged. Door drive according to claim 39, characterized in that the rack ( 7a ) live conductor ( 18 ) and the drive unit ( 6 ) corresponding pantographs ( 19 ) having. Door drive according to claim 40, characterized in that the rack ( 7a ) a groove ( 20 ) and the current-carrying conductor ( 18 ) in the groove ( 20 ) the rack ( 7a ) is arranged. Door drive according to claim 40 or 41, characterized in that the current collector ( 19 ) is designed as a sliding contact. Door drive according to claim 26, characterized in that the force transmission element ( 7 ) as a circular rack ( 7b ) is executed. Door drive according to claim 43, characterized in that the drive unit ( 6 ) as a drive element ( 12 ) a drive pinion ( 12c ) and that the drive pinion ( 12c ) with the circular rack ( 7b ) forms the gear connection. Door drive according to claim 44, characterized in that the drive unit ( 6 ) a counter bearing ( 17 ) for the circular rack ( 7b ) and that the counter bearing ( 17 ) the drive pinion ( 12c ) the drive unit ( 6 ) is arranged essentially opposite. Door drive according to claim 45, characterized in that the counter bearing ( 17 ) as a pressure roller, preferably made of an elastically deformable material, in particular rubber. Door drive according to one of claims 43 to 46, characterized in that the circular rack ( 7b ) is arranged so that the center of the circle of the circular rack ( 7b ) with the swivel axis ( 4 ) of the door leaf ( 5 ) coincides. Door drive according to one of claims 43 to 47, characterized in that the toothing of the circular rack ( 7b ) is arranged on the outer circumference. Door drive according to claim 26, characterized in that the force transmission element ( 7 ) as a link chain ( 7c ) is designed with a toothing. Door drive according to claim 49, characterized in that the drive unit ( 6 ) as a drive element ( 12 ) a drive pinion ( 7c ) and that the drive pinion ( 7c ) with the toothing of the link chain ( 7c ) forms the gear connection. Door drive according to claim 49 or 50, characterized in that the links of the link chain ( 7c ) are arranged pivotable against each other. Door drive according to one of claims 49 to 51, characterized in that the links of the link chain ( 7c ) for the power transmission can be adjusted, at least in sections, into a position - power transmission position - in which several members together form an arcuate section ( 21 ) form. Door drive according to claim 52, characterized in that the arcuate section ( 21 ) the link chain ( 7c ) the toothing has an internal toothing. Door drive according to claim 52 or 53, characterized in that the drive unit ( 6 ) a guide element ( 22 ) for guiding the links into the power transmission position, preferably the guide element ( 22 ) the drive pinion ( 12c ) is arranged opposite one another. Door drive according to one of claims 52 to 54, characterized in that the links of the link chain ( 7c ) alternating recesses on their flanks ( 23 ) or an engagement section on its upper side ( 24 ) for engagement with the respectively adjacent links in the power transmission position. Door drive according to one of claims 49 to 55, characterized in that the links of the link chain ( 7c ) are made of plastic. Door drive according to claim 3 and one of claims 35 to 56, characterized in that the position detection means ( 9 ' ) designed as an incremental encoder and with the drive element ( 12 ), especially the drive pinion ( 12c ), is coupled. Door drive according to one of the preceding claims, characterized in that the force transmission element ( 7 ) near or at the top of the door leaf ( 5 ) is arranged. Door drive according to one of claims 43 to 58, characterized in that the drive unit ( 6 ) is arranged essentially in the upper door rebate or the upper door frame. Door drive according to one of the preceding claims, characterized in that the drive unit ( 6 ) is symmetrical. Door drive according to one of the preceding claims, characterized in that a suspension device ( 25 ) is provided with which the drive unit ( 6 ) on the door leaf ( 5 ) can be attached. Door drive according to claim 61, characterized in that the suspension device ( 25 ) two bow-shaped brackets ( 26 ) having. Door drive according to claim 2 and possibly one of claims 3 to 62, characterized in that a door latch or a door latch is provided and that the door latch or the door latch is operated by means of the control electronics ( 9 ) can be released electrically and / or by means of manual actuation, preferably via a door handle. Drive unit, especially for a door drive ( 1 ), with a drive motor ( 8th ), a transmission, a drive element ( 12 ) and control electronics ( 9 ), the drive element ( 12 ) from the drive motor ( 8th ) can be driven via the transmission, the drive motor ( 8th ) by means of the control electronics ( 9 ) can be switched on and off and the control electronics ( 9 ) a means for monitoring the speed of the drive motor ( 8th ), characterized in that the means for speed monitoring is implemented in terms of control technology in that the drive motor ( 8th ) switched off for a defined period of time and during this time the generator voltage of the trailing drive motor ( 8th ) is measured and evaluated as a speed equivalent signal. Drive unit according to claim 64, characterized in that this Means for speed monitoring is designed such that the Speed monitoring periodically or at statistically random intervals. Drive unit according to claim 64 or 65, characterized in that the drive motor ( 8th ) approximately 15 ms to 25 ms, preferably approximately 20 ms, is switched on and approximately 0.5 ms to 5 ms, preferably approximately 1 ms, is switched off. Drive unit according to one of claims 64 to 66, characterized by one or more of the features of the characteristic Part of one or more of claims 2 to 20.