EP1835110B1 - Door actuating device, in particular for a revolving door - Google Patents

Door actuating device, in particular for a revolving door Download PDF

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Publication number
EP1835110B1
EP1835110B1 EP07003391A EP07003391A EP1835110B1 EP 1835110 B1 EP1835110 B1 EP 1835110B1 EP 07003391 A EP07003391 A EP 07003391A EP 07003391 A EP07003391 A EP 07003391A EP 1835110 B1 EP1835110 B1 EP 1835110B1
Authority
EP
European Patent Office
Prior art keywords
spring
door
actuating device
spring adjusting
door actuating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07003391A
Other languages
German (de)
French (fr)
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EP1835110A3 (en
EP1835110A2 (en
Inventor
Volker Bienek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dorma Deutschland GmbH
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Dorma Deutschland GmbH
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Publication date
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Publication of EP1835110A2 publication Critical patent/EP1835110A2/en
Publication of EP1835110A3 publication Critical patent/EP1835110A3/en
Application granted granted Critical
Publication of EP1835110B1 publication Critical patent/EP1835110B1/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/104Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with cam-and-slide transmission between driving shaft and piston within the closer housing
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/60Power-operated mechanisms for wings using electrical actuators
    • E05F15/603Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/63Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by swinging arms
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/40Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/404Motors; Magnets; Springs; Weights; Accessories therefore characterised by the function
    • E05Y2201/41Motors; Magnets; Springs; Weights; Accessories therefore characterised by the function for closing
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/40Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/404Motors; Magnets; Springs; Weights; Accessories therefore characterised by the function
    • E05Y2201/422Motors; Magnets; Springs; Weights; Accessories therefore characterised by the function for opening
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/40Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/43Motors
    • E05Y2201/434Electromotors; Details thereof
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/40Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/47Springs; Spring tensioners
    • E05Y2201/492Spring tensioners, tension sensors
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/60Suspension or transmission members; Accessories therefore
    • E05Y2201/622Suspension or transmission members elements
    • E05Y2201/696Screw mechanisms
    • E05Y2201/702Spindles; Worms
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/60Suspension or transmission members; Accessories therefore
    • E05Y2201/622Suspension or transmission members elements
    • E05Y2201/71Toothed gearing
    • E05Y2201/716Pinions
    • E05Y2201/718Bevelled pinions
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2600/00Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/10Adjustable or movable
    • E05Y2600/20Adjustable or movable characterised by the movement transmission
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/10Additional functions
    • E05Y2800/11Manual wing operation
    • E05Y2800/112Back driving the transmission or motor
    • E05Y2800/113Power assistance
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/10Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132Doors

Definitions

  • the present invention relates to a door operating device, in particular for a revolving door, with a drive unit which is coupled to a door and is arranged in a housing, further comprising a spring energy accumulator, in which at least the energy required to perform the closing movement of the door can be stored and which at least one arranged under a spring bias compression spring, wherein the spring bias of the compression spring is adjustable by means of a spring adjustment.
  • Such door actuation devices which are also referred to as door drives or door closers, are well known.
  • door actuation devices which comprise an electrohydraulic unit in order to also allow the door to be opened via the door actuation device
  • devices without an electrohydraulic drive merely control the kinematics of the door closing movement.
  • spring energy storage devices are present in the door operating devices, which store the energy required for the closing movement of the door in the form of mechanical work. The storage of the mechanical work by means of at least one compression spring, which is stretched during the opening movement of the door, so that the closing movement of the door via a relaxation of the compression spring takes place.
  • the devices can either be used on or in the door frame or be used or integrated on or in the door leaf.
  • the devices in fire doors must have minimum closing moments the doors are reached, depending on the width and weight of the doors.
  • specifications are to be complied with, which relate for example to the availability of a mechanically stored energy in the door operating devices, so that a fire door executes an automatic closing of the door even in the event of a power failure and thus a failure of a possible control of the door operating device.
  • the problem to be solved is often to minimize the size of the door actuation devices in such a way that even integration of the device in the door leaf becomes possible.
  • spring adjustments are provided by means of which the biasing force of the compression spring, which stores the mechanical energy to provide a minimum closing torque of the door leaf, can be adjusted.
  • a spring adjustment known which comprises a support disk on which the compression spring rests end side.
  • the support disk has an internal thread, into which a spring adjustment is screwed, wherein the spring adjustment is axially fixed in a screw plug at the end of the housing of the device.
  • the spring adjustment By rotating the spring adjustment, an axial movement of the support disk is caused, so that the compression spring is compressed or relaxed. In this case, the support disk can rotate with it, unless this is carried out in the housing complex via corresponding guide grooves.
  • no end stop is provided, so that during an axial movement in the compression direction of the compression spring, the spring adjustment can be unscrewed from the support disk and there is a failure of the device.
  • the EP 0 756 663 B1 discloses a door closer with a spring force adjustment, which comprises an adjusting sleeve and is formed so that in its inner region a cavity is present, wherein this further comprises a collar on which the compression spring can be supported by a support disk. In the region of the collar, a breakthrough is formed, which makes a correspondingly designed a driver geometric shape for positive connection between the driver and the adjusting possible. In this case, the driver dives according to the direction of movement through the opening in the cavity of the adjusting sleeve. At the same time, however, the driver is surrounded by the pressure spring, so that in the interior of the compression spring of the driver is placed.
  • the driver In order to change the spring force adjustment in the installed state, the driver is within a cap, which is arranged end in the housing of the door closing device, placed over a seal and for securing via a lock washer.
  • the protruding from the cap end of the driver is accessible with a corresponding tool to initiate a rotational movement in the driver.
  • a Verkontem which is not controllable by an operator on the outside of the housing adjusting screw and may not be solved again.
  • the operation of the spring adjustment is only possible via the adjusting screw, which end is arranged on the longitudinally formed housing of the door operating device.
  • a door closer with an adjustable closing force is known.
  • This has at least one arranged in the closer housing, supported with one end on an adjustable plate Compression spring and an actuatable from outside the housing means for adjusting the plate.
  • the plate is arranged on a rotatably mounted drivable threaded spindle, wherein the arranged on a threaded spindle spring plate is driven by a worm gear.
  • the worm gear takes a considerable amount of space, since a tangentially arranged to the worm drive screw can not be integrated in a small space.
  • this solution of a spring adjustment on a fixed stop which can lead to Verkontern.
  • the spring plate must be guided axially in order to avoid co-rotation of the spring plate with the threaded spindle.
  • stop edges may be provided in the housing, which are formed as diameter steps in the housing. These require a considerable manufacturing effort, with a stop in the compression direction of the compression spring is essential to avoid overload of the compression spring.
  • spring adjustments are provided, which are adjusted by an operating element, which end of the longitudinally formed housing of the device by means a tool is operable.
  • an electro-hydraulic unit which preferably takes place on the end side of the housing, a simultaneous arrangement of the operating elements of the spring adjustment is not possible.
  • the controls of the spring adjustment must be led out laterally on the housing, which is usually possible only over very space-consuming worm gears.
  • the invention includes the technical teaching that a rotational movement via a Federverstellhülse is introduced into the Federverstellmutter, and wherein the Federverstellmutter is arranged axially movable for Federverstellhülse and the rotational movement is transferable via a positive connection wherein the Federverstellhülse (19) on the support sleeve (16). and / or on the threaded spindle (17) is arranged axially fixed rotatably and the threaded spindle (17) through the Federverstellhülse (19) extends axially wherein the threaded spindle (17) is fixed both in the longitudinal direction and in the direction of rotation.
  • the spring adjustment comprises a housing-fixed support sleeve, wherein the support sleeve is arranged both in the longitudinal direction of the device and in the rotational direction stationary to the housing, which for example has an external thread which is screwed into an internal thread in the housing.
  • a threaded spindle is arranged, which is fixed both in the longitudinal direction and in the direction of rotation.
  • a Federverstellmutter is screwed with an internal thread, wherein the adjusting nut is adjustable due to rotation on the thread of the threaded spindle in the axial direction.
  • the Federverstellmutter has a spring plate on which the compression spring rests end.
  • the bias of the compression spring can be increased by the Federverstellmutter is rotated in the direction of the compression spring on the threaded spindle, wherein the spring tension can be reduced by the Federverstellmutter is adjusted in the direction of the support sleeve on the threaded spindle.
  • the rotational movement which is necessary for the axial adjustment of the spring adjustment, is introduced via a spring adjustment in the Federverstellmutter.
  • the spring adjusting sleeve is arranged to be axially movable relative to the spring adjusting nut, wherein the rotational movement can be transmitted via a positive connection.
  • the Federverstellhülse remain in an axially stationary position, the Federverstellmutter performs the axial movement.
  • This arrangement allows the initiation of a rotational movement in a stationary, but rotating Federverstellhülse, wherein furthermore an axially fixed and rotationally fixed threaded spindle can also be arranged stationary.
  • the positive connection between the Federverstellmutter and the Federverstellhülse comprises a uniform in the axial direction polygonal contour, which is formed on the inside in the Federverstellhülse and on the outside of the Federverstellmutter, wherein the inside and the outside polygon contour arranged one inside the other is to allow relative to each other rotationally fixed an axial movement.
  • a polygon contour for example, a hexagon can be provided, wherein also a square, an octagon or any other polygon can be provided.
  • a spline which also can transmit torque, and at the same time allows an axial movement between the nested components such as the Federverstellmutter and Federverstellhülse.
  • Alternative embodiments of the axially movable rotary joint can be seen in the application of sliding blocks or keyways, which may be designed in the sense of a shaft-hub connection.
  • the spring adjustment sleeve is rotatably arranged axially fixed to the support sleeve and / or on the threaded spindle and the threaded spindle extends axially through the Federverstellhülse.
  • the threaded spindle is screwed into the end of the support sleeve, and has a collar which between the end face of the support sleeve and the collar itself provides the formation of a cylindrical portion which is formed as a sliding bearing.
  • the spring adjustment sleeve has a cylindrical inner portion which is placed on the cylinder portion of the threaded spindle.
  • the spring adjustment sleeve is axially fixed, and rotatably supported due to the sliding bearing arrangement.
  • the Federverstellhülse is arranged coaxially with a portion of the threaded spindle, wherein the Spring adjusting nut can dip into the spring adjusting sleeve.
  • a first gear is rotatably connected to the Federverstellhülse, via which the rotational movement is introduced into the Federverstellhülse.
  • the first gear is engaged with a second gear, wherein the rotational planes of the gears occupy an angle of about 90 ° to each other.
  • the first gear may be pressed onto the portion of the sliding bearing between the Federverstellhülse and the threaded spindle on the Federverstellhülse or also include a polygon in order to arrange rotationally relative to the Federverstellhülse.
  • a second gear is arranged offset 90 ° to the first gear, wherein the angle describes the orthogonal to each other of the rotational planes of the gears.
  • the rotational movement can be initiated from a direction perpendicular to the longitudinal axis of the door operating device and thus perpendicular to the longitudinal axis of the threaded spindle or the spring adjustment.
  • Possible embodiments of the toothing may be a bevel gear, wherein also a crown gear can be provided. In this case, only the transmission of a rotational movement over an angle of 90 ° is required, so that any further toothing option in the context of the present invention is applicable.
  • the second gear is rotatably supported by a gear receptacle in the housing, which is positioned so that it is exactly in engagement with the first gear.
  • the positioning can be realized for example via a diameter stage, to which the support sleeve abuts, wherein the first gear rests flat against the end face of the support sleeve.
  • the Gear receptacle for receiving the second gear in the housing is pressure-tight relative to the housing, wherein the seal is realized via O-rings.
  • the gear receptacle can be screwed from the outside of the housing of the device, wherein the positioning can be provided to ensure an exact toothing via a stop collar, which is formed in the gear receptacle.
  • the gear receptacle in this case has a tool holder in order to initiate the rotational movement in the toothing and thus in the adjusting nut by means of a tool from the outside of the housing.
  • the tool holder may comprise a hexagon socket, so that with an Allen key, the bias of the compression spring can be adjusted.
  • the tool holder in the gear holder can be flush with the outside of the housing of the door operating device, so that no components protrude from the device to ensure installation, for example in a door leaf.
  • the tool holder for example, upwards, so that an operator by means of a tool, the bias of the compression spring and thus the restoring torque which exerts the door operating device on the door leaf, can adjust by means of a tool from above. If the door operating device is installed, for example, in the frame of a door, then the tool holder can be arranged in the direction of the door leaf, so that the operator performs the adjustment upside down.
  • the second gear wheel is set in rotation.
  • the rotational movement is transmitted through an angle of 90 ° to the longitudinal axis of the door operating device, so that the first gear receives the rotational movement. Due to the rotationally fixed arrangement of the first gear on the Federverstellhülse this is also rotated. This rotates the Federverstellhülse on the fixed Threaded spindle, wherein the Federverstellmutter is arranged coaxially in the Federverstellhülse.
  • the threaded spindle comprises a spring adjustment stop, against which the spring adjusting nut abuts on the threaded spindle in the direction of the compression spring during a screwing movement and limits the screwing movement.
  • the spring adjusting nut has an annular end surface which is attached to a formation which extends beyond the spring plate in the direction of the compression spring. Now, if the Federverstellmutter adjusted in the direction of the compression spring, abuts the annular end face of the Federverstellmutter to the spring adjustment stop when reaching the maximum adjustment.
  • the spring adjustment stop comprises a stop disc, which is accommodated on the threaded spindle.
  • the stop disc has an axial play wherein the axial play comprises about 0.1 mm to 1 mm, preferably about 0.3 mm to 0.8 mm and particularly preferably about 0.4 mm to 0.5 mm.
  • the stop disc is placed on the threaded spindle and secured by a locknut.
  • the said axial clearance thus arises between a collar on the threaded spindle, on which rests the axial disc and the lock nut.
  • the axial clearance is used so that the stop disc is rotatable, so that when abutting the Federverstellmutter to the stop plate no Verkontern can occur.
  • the effective friction diameter between the stopper plate and the locknut is smaller than between the stopper plate and the annular end face of the spring adjusting, so that even at a very firm twisting against the Federverstellanschlag at any time a release of the attack is possible without much effort.
  • the stop in the direction of the spring compression occur relatively high forces, the operator receives no information about where the spring adjusting nut is located. Therefore, it can not come to a failure of the system by a verkont réellespicks bracing the Federverstellmutter with the spring adjustment stop, because to adjust in Losdusraum no force peak must be overcome, since the stop plate can rotate.
  • locknut has a cylinder portion which allows centering of a pressure spring arranged in the second compression spring.
  • the second compression spring is arranged coaxially with the first compression spring and serves to increase the maximum possible spring force on the drive unit.
  • the second compression spring has an inner diameter which so fits over the cylinder portion, so that the spring is centered by the lock nut.
  • a hexagon is formed at the end, wherein between the spring stopper and the threaded portion of the threaded spindle also a hexagon is formed.
  • the door actuating device can be provided with an electro-hydraulic drive unit, wherein pressure chambers can be acted upon by a pressurized oil in order to adjust axially movable pistons arranged in the housing of the device in such a way that the drive unit can be operated to operate the revolving door.
  • electrohydraulic drives are used in particular for carrying out the opening movement of the revolving door, wherein at the same time the compression spring of the spring force accumulator is hydraulically tensioned to carry out a subsequent closing movement solely by the energy stored in the spring accumulator.
  • Even door actuators without electro-hydraulic drive often have an oil-hydraulic fluid system, which usually includes a closed circuit.
  • the pistons which are axially movable in the housings of the devices, are pressurized alternately, whereby the oil is conducted via oil passages, which are preferably introduced into the housing itself.
  • a pressure compensation unit is needed, as with a temperature increase due to the expansion of the oil, the oil pressure in the closed fluid system of the device can increase sharply. Depending on the temperature, oil pressures can occur, which can even damage the housing.
  • pressure equalization units have a volume accumulator which offers volumetric compliance, so that the volume accumulator can shrink when the oil expands, in order to avoid the mentioned pressure peaks.
  • the door actuating device comprises a pressure compensation unit, wherein the support sleeve of the spring adjustment is designed as a pressure compensation unit.
  • the support sleeve takes the function of receiving the spring adjustment in the housing true, and also serves as a pressure compensation unit, since the support sleeve can be formed with a corresponding volume memory.
  • the support sleeve comprises a cylinder in which a piston is received axially movable, wherein the support sleeve further comprises a closure element to form a pressure compensation chamber.
  • the pressure compensation chamber serves as a volume storage, wherein the chamber is formed from the interior of the cylinder, which is bounded on the one hand by the closure element and on the other hand is closed by the axially movable piston. If the oil now expands in the closed system of the door operating device, then the piston moves axially into the cylinder, so that the volume decreases. When the oil contracts again, the piston moves axially out of the cylinder and increases the volume of the pressure compensation chamber.
  • the pressure compensation chamber is formed pressure-tight due to an all-round seal, so that when the piston moves into the cylinder through the resulting compression, an increase in the internal pressure of the pressure compensation chamber. This is usually filled with air, so that the air is compressed.
  • there is a compression spring between the closure element and the piston which is also compressed, and the piston can increase the volume in the cylinder again with a decrease in the pressure of the oil in the device, since the compression spring the piston again pushes out of the cylinder.
  • the piston is sealed by means of at least one sealing element dynamically pressure-tight against the inner wall of the cylinder, wherein the sealing elements are preferably formed from two lip seals.
  • the spring adjustment is formed with the support sleeve formed as a pressure compensation chamber as a single preassembled unit which is screwed via a thread in the housing of the device.
  • the thread is formed on the outside of the support sleeve, wherein the support sleeve may also have sealing elements, at the same time to create a seal of the interior of the housing of the device by means of the screwed-support sleeve.
  • a door operating device 1 is shown, which is particularly suitable for a revolving door and can be installed for example in a door leaf or in a door frame.
  • the door operating device 1 comprises a drive unit 10, which can be coupled to a door according to the present exemplary embodiment.
  • the door operating device 1 consists of a housing 11 in which a spring energy accumulator 12 is arranged.
  • the spring energy accumulator 12 allows the storage of energy in the form of a spring compression, which is stored by the compression of a compression spring 13 when the door is opened.
  • the spring force memory 12 acts on the drive unit 10, which is connected to the revolving door such that it performs a closing movement.
  • the spring force accumulator 12 includes a spring adjustment 15, by means of which the biasing force in the compression spring 13 is adjustable.
  • the spring adjustment 15 is constructed at least from a housing-fixed support sleeve 16, on which a fixed threaded spindle 17 is arranged.
  • a Federverstellmutter 18 is screwed, wherein the Federverstellmutter 18 can be adjusted by a Federverstellhülse 19.
  • the Federverstellmutter 18 is rotatably connected to the Federverstellhülse 19 via a positive connection, so that they can indeed move axially to each other, but not rotate against each other.
  • the electrohydraulic drive 14 comprises a special electric motor and a hydraulic unit, which is selectively driven via a transmission by the motor. According to the embodiment of the door operating device 1, this has by means of the electro-hydraulic drive 14 the possibility to perform the opening movement of the revolving door automatically, during the opening movement, the revolving door is set in motion, and the compression spring 13 due to an axially moving adjacent to the compression spring 13 piston 20 tense becomes.
  • the opening movement of the revolving door is initiated via the pressurized pistons 20, 21, wherein the drive unit 10 comprises a cam-roller unit for converting the axial movement of the piston 20 and 21 into a rotational movement of a shaft 22.
  • the said components are arranged inside the housing 11, so that the door operating device 1 can be installed in a plurality of revolving doors within the door leaves due to the narrow formation with a width of for example 40 mm.
  • the pistons 20 and 21 are acted upon via respective adjacent pressure chambers with a hydraulic fluid, wherein the fluid pressure via the electro-hydraulic drive 14 is provided.
  • the fluid connections may be in the form of channels which are integrated in the housing 11.
  • Fig. 2 shows a section of the door operating device 1, so that in particular the spring adjustment 15 is shown in detail.
  • the spring adjustment 15 comprises a threaded spindle 17, which is screwed into the support sleeve 16 at the end.
  • the threaded spindle 17 is fixed both in the axial direction and in the direction of rotation.
  • the Federverstellmutter 18 is arranged, which extends into a Federverstellhülse 19 inside.
  • the Federverstellhülse 19 is rotationally connected to a first gear 23 which is arranged axially fixed between the support sleeve 16 and the Federverstellhggse 19.
  • the first gear 23 is toothed with a second gear 24, wherein the toothing according to the present embodiment comprises a bevel gear.
  • the toothing according to the present embodiment comprises a bevel gear.
  • the second gear 24 is received in a gear receptacle 25 which is stationary and rotatably mounted in the housing 11.
  • a tool 26 which in the tool holder 27 can be inserted, a rotational movement in the tool holder 27 and thus introduced into the second gear 24, the rotational movement is transmitted via the toothed engagement located in the first gear 23 to the longitudinal axis of the device.
  • the rotational movement is transmitted to this, the Federverstellhggse 19 are connected to the Federverstellmutter 18 via a hexagonal rotation and axially movable with each other.
  • the rotational movement is also transmitted to the Federverstellmutter 18 so that it performs on the thread of the threaded spindle 17 along an axial movement. If the rotational movement in one direction is then introduced by means of the tool 26, so that the spring adjusting nut 18 moves in the direction of the compression spring 13, the preload in the compression spring 13 is increased. This simultaneously increases the force level on the piston 20 (see Fig. 1 ), wherein the torque is increased to the shaft 22 via the roller cam drive.
  • a second compression spring 28 is provided, which extends coaxially within the compression spring 13.
  • the second compression spring 28 is supported on the housing-fixed threaded spindle 17, so that it is not affected by the spring adjustment 15.
  • Fig. 3 and Fig. 4 show the view of the spring adjustment 15, wherein these in Fig. 3 is shown cut in an assembled view and in Figure 4 is shown as an exploded view in the disassembled state.
  • the non-rotating, ie fixed components of the spring adjustment 15 include the support sleeve 16, the threaded spindle 17, and an end arranged in the direction of the compression spring stop plate 29, which is arranged by means of a lock nut 30 on the threaded spindle 17.
  • the rotating components include the first gear 23, which is rotationally connected to the Federverstellhülse 19. This has a hexagon socket, which is axially joined to the hexagon on the Federverstellmutter 18.
  • the Federverstellmutter 18 includes an integrally formed spring plate 31, on which the compression spring 13 rests end side.
  • the support sleeve 16 is designed as a pressure compensation unit 32, which comprises a cylinder 33 in which a piston 34 is axially guided.
  • the pressure compensation unit 32 further comprises a closure element 36 which has a threaded bore into which the threaded spindle 17 can be screwed on the outside.
  • a compression spring 37 is arranged between the piston 34 and the closure element 36, which moves the piston 34 in the unpressurized state of the fluidic system in a direction in which the pressure compensation chamber 35 is increased in volume.
  • the piston 34 comprises sealing elements 38, wherein these are designed according to the present embodiment as lip seals and are arranged twice radially in the lateral surface of the piston 34.

Abstract

The device (1) has spring adjustment (15) having threaded spindle (17) arranged at a housing-firm supporting case (16), on which a spring adjusting nut (18) is screwed having an internal thread and a spring retainer. A rotating motion is introduced over a spring adjusting case (19) into the spring adjusting nut, where the spring adjusting nut is arranged axially movable to the spring adjusting case and the rotating motion is transferred over a positive connection.

Description

Die vorliegende Erfindung betrifft eine Türbetätigungsvorrichtung, insbesondere für eine Drehtür, mit einer Antriebseinheit, welche mit einer Tür koppelbar ist und in einem Gehäuse angeordnet ist, weiterhin umfassend einen Federkraftspeicher, in welchem zumindest die zur Ausführung der Schließbewegung der Tür erforderliche Energie speicherbar ist und welcher zumindest eine unter einer Federvorspannung angeordnete Druckfeder aufweist, wobei die Federvorspannung der Druckfeder mittels einer Federverstellung einstellbar ist.The present invention relates to a door operating device, in particular for a revolving door, with a drive unit which is coupled to a door and is arranged in a housing, further comprising a spring energy accumulator, in which at least the energy required to perform the closing movement of the door can be stored and which at least one arranged under a spring bias compression spring, wherein the spring bias of the compression spring is adjustable by means of a spring adjustment.

Derartige Türbetätigungsvorrichtungen, welche auch als Türantriebe oder Türschließer bezeichnet werden, sind hinreichend bekannt. Zu unterscheiden sind insbesondere Türbetätigungsvorrichtungen, welche eine elektrohydraulische Einheit umfassen, um auch ein Öffnen der Tür über die Türbetätigungsvorrichtung zu ermöglichen, wohingegen Vorrichtungen ohne einen elektrohydraulischen Antrieb lediglich die Kinematik der Türschließbewegung steuern. Jedenfalls sind in den Türbetätigungsvorrichtungen Federkraftspeicher vorhanden, welche die für die Schließbewegung der Tür erforderliche Energie in Form mechanischer Arbeit speichern. Die Speicherung der mechanischen Arbeit erfolgt mittels zumindest einer Druckfeder, welche bei der Öffnungsbewegung der Tür gespannt wird, so dass die Schließbewegung der Tür über eine Entspannung der Druckfeder erfolgt.Such door actuation devices, which are also referred to as door drives or door closers, are well known. In particular, a distinction is made between door actuation devices which comprise an electrohydraulic unit in order to also allow the door to be opened via the door actuation device, whereas devices without an electrohydraulic drive merely control the kinematics of the door closing movement. In any case, spring energy storage devices are present in the door operating devices, which store the energy required for the closing movement of the door in the form of mechanical work. The storage of the mechanical work by means of at least one compression spring, which is stretched during the opening movement of the door, so that the closing movement of the door via a relaxation of the compression spring takes place.

Die Vorrichtungen können entweder auf oder im Türrahmen eingesetzt oder auch auf oder im Türblatt eingesetzt oder integriert werden. Beim Einsatz der Vorrichtungen in Brandschutztüren müssen Mindestschließmomente der Türen erreicht werden, wobei diese abhängig von der Breite und vom Gewicht der Türen sind. Dabei sind Vorgaben einzuhalten, welche beispielsweise die Verfügbarkeit einer mechanisch gespeicherten Energie in den Türbetätigungsvorrichtungen betreffen, so dass eine Brandschutztür auch bei einem Stromausfall und damit einem Ausfall einer möglichen Steuerung der Türbetätigungsvorrichtung ein selbsttätiges Schließen der Tür ausführt. Die zu lösende Aufgabe besteht häufig darin, die Türbetätigungsvorrichtungen in ihrer Baugröße derart zu minimieren, dass selbst eine Integration der Vorrichtung in das Türblatt möglich wird. Um für eine Vielzahl von Varianten hinsichtlich verschiedener Türbreiten und Türgewichte einheitliche Betätigungsvorrichtungen der Türblätter zu schaffen, werden Federverstellungen vorgesehen, mittels der die Vorspannkraft der Druckfeder, die die mechanische Energie zur Bereitstellung eines Mindestschließmomentes des Türblattes speichert, verstellt werden kann.The devices can either be used on or in the door frame or be used or integrated on or in the door leaf. When using the devices in fire doors must have minimum closing moments the doors are reached, depending on the width and weight of the doors. In this case, specifications are to be complied with, which relate for example to the availability of a mechanically stored energy in the door operating devices, so that a fire door executes an automatic closing of the door even in the event of a power failure and thus a failure of a possible control of the door operating device. The problem to be solved is often to minimize the size of the door actuation devices in such a way that even integration of the device in the door leaf becomes possible. In order to provide for a variety of variants with respect to different door widths and door weights uniform actuators of the door leaves, spring adjustments are provided by means of which the biasing force of the compression spring, which stores the mechanical energy to provide a minimum closing torque of the door leaf, can be adjusted.

Aus dem Gebrauchsmuster DE 92 09 276 U1 ist eine Federverstellung bekannt, welche eine Stützscheibe umfasst, auf der die Druckfeder endseitig aufliegt. Die Stützscheibe weist ein Innengewinde auf, in welches eine Federverstellung eingeschraubt ist, wobei die Federverstellung axial fixiert in einer Verschlussschraube endseitig am Gehäuse der Vorrichtung angeordnet ist. Durch ein Verdrehen der Federverstellung wird eine axiale Bewegung der Stützscheibe hervorgerufen, so dass die Druckfeder komprimiert bzw. entspannt wird. Dabei kann sich die Stützscheibe mitdrehen, sofern diese nicht aufwändig im Gehäuse über entsprechende Führungsnuten axial geführt ist. Bei einer Drehung der Federverstellung bzw. bei der axialen Bewegung der Stützscheibe ist kein Endanschlag vorgesehen, so dass bei einer axialen Bewegung in Kompressionsrichtung der Druckfeder die Federverstellung aus der Stützscheibe herausgedreht werden kann und es zu einem Versagen der Vorrichtung kommt.From the utility model DE 92 09 276 U1 is a spring adjustment known which comprises a support disk on which the compression spring rests end side. The support disk has an internal thread, into which a spring adjustment is screwed, wherein the spring adjustment is axially fixed in a screw plug at the end of the housing of the device. By rotating the spring adjustment, an axial movement of the support disk is caused, so that the compression spring is compressed or relaxed. In this case, the support disk can rotate with it, unless this is carried out in the housing complex via corresponding guide grooves. Upon rotation of the spring adjustment or in the axial movement of the support disk, no end stop is provided, so that during an axial movement in the compression direction of the compression spring, the spring adjustment can be unscrewed from the support disk and there is a failure of the device.

Die EP 0 756 663 B1 offenbart einen Türschließer mit einer Federkraftverstellung, welche eine Einstellhülse umfasst und so ausgebildet ist, dass in ihrem inneren Bereich ein Hohlraum vorhanden ist, wobei diese weiterhin einen Kragen aufweist, an dem sich die Druckfeder über eine Stützscheibe abstützen kann. Im Bereich des Kragens ist ein Durchbruch ausgebildet, der eine entsprechend einem Mitnehmer gestaltete geometrische Form zur formschlüssigen Verbindung zwischen dem Mitnehmer und der Einstellhülse möglich macht. Dabei taucht der Mitnehmer entsprechend der Bewegungsrichtung durch den Durchbruch in den Hohlraum der Einstellhülse ein. Gleichzeitig wird aber der Mitnehmer von der Druckfeder umgeben, so dass in dem Innenraum der Druckfeder der Mitnehmer platziert ist. Um die Federkraftverstellung auch im eingebauten Zustand verändern zu können, ist der Mitnehmer innerhalb einer Verschlusskappe, welche endseitig im Gehäuse der Türschließvorrichtung angeordnet ist, über eine Dichtung und zur Sicherung über eine Sicherungsscheibe platziert. Das aus der Verschlusskappe herausragende Ende des Mitnehmers ist mit einem entsprechenden Werkzeug zugänglich, um eine Drehbewegung in den Mitnehmer einzuleiten. Bei einer Verdrehung der Federverstellung bis an den Anschlag einer Sicherungsscheibe, welche an einer Verstellschraube angeordnet ist, kann es zu einem Verkontem kommen, welches von einer Bedienung über die außenseitig am Gehäuse angeordnete Verstellschraube nicht kontrollierbar ist und möglicherweise nicht wieder gelöst werden kann. Die Bedienung der Federverstellung ist lediglich über die Verstellschraube möglich, welche endseitig am längs ausgebildeten Gehäuse der Türbetätigungsvorrichtung angeordnet ist. Bei der Einrichtung einer elektrohydraulischen Betätigungseinrichtung ist eine endseitige Bedienung der Federverstellung nicht möglich, da an dieser Endseite am Gehäuse die elektrohydraulische Einheit angeordnet wird.The EP 0 756 663 B1 discloses a door closer with a spring force adjustment, which comprises an adjusting sleeve and is formed so that in its inner region a cavity is present, wherein this further comprises a collar on which the compression spring can be supported by a support disk. In the region of the collar, a breakthrough is formed, which makes a correspondingly designed a driver geometric shape for positive connection between the driver and the adjusting possible. In this case, the driver dives according to the direction of movement through the opening in the cavity of the adjusting sleeve. At the same time, however, the driver is surrounded by the pressure spring, so that in the interior of the compression spring of the driver is placed. In order to change the spring force adjustment in the installed state, the driver is within a cap, which is arranged end in the housing of the door closing device, placed over a seal and for securing via a lock washer. The protruding from the cap end of the driver is accessible with a corresponding tool to initiate a rotational movement in the driver. Upon rotation of the spring adjustment up to the stop of a locking washer, which is arranged on an adjusting screw, there may be a Verkontem, which is not controllable by an operator on the outside of the housing adjusting screw and may not be solved again. The operation of the spring adjustment is only possible via the adjusting screw, which end is arranged on the longitudinally formed housing of the door operating device. When setting up an electro-hydraulic actuator, an end-to-end operation of the spring adjustment is not possible since the electro-hydraulic unit is arranged on this end side on the housing.

Aus der DE 32 24 300 C2 ist ein Türschließer mit einer einstellbaren Schließkraft bekannt. Dieser weist wenigstens eine im Schließergehäuse angeordnete, mit einem Ende an einem verstellbaren Teller abgestützte Druckfeder und eine von außerhalb des Gehäuses betätigbare Einrichtung zur Tellerverstellung auf. Der Teller ist dabei auf einer drehbar gelagerten antreibbaren Gewindespindel angeordnet, wobei der auf einer Gewindespindel angeordnete Federteller über ein Schneckengetriebe angetrieben ist. Das Schneckengetriebe nimmt dabei einen erheblichen Platz in Anspruch, da eine tangential zum Schneckenrad angeordnete Antriebsschnecke nicht auf einem kleinen Bauraum integrierbar ist. Weiterhin weist auch diese Lösung einer Federverstellung einen festen Anschlag auf, bei dem es zu einem Verkontern kommen kann. Zudem muss der Federteller axial geführt werden, um ein Mitrotieren des Federtellers mit der Gewindespindel zu vermeiden.From the DE 32 24 300 C2 a door closer with an adjustable closing force is known. This has at least one arranged in the closer housing, supported with one end on an adjustable plate Compression spring and an actuatable from outside the housing means for adjusting the plate. The plate is arranged on a rotatably mounted drivable threaded spindle, wherein the arranged on a threaded spindle spring plate is driven by a worm gear. The worm gear takes a considerable amount of space, since a tangentially arranged to the worm drive screw can not be integrated in a small space. Furthermore, this solution of a spring adjustment on a fixed stop, which can lead to Verkontern. In addition, the spring plate must be guided axially in order to avoid co-rotation of the spring plate with the threaded spindle.

Ein weiterer Türschließer gemäß dem Oberbegriff des Anspruchs 1 ist in DE 28 19 334 offenbart.Another door closer according to the preamble of claim 1 is in DE 28 19 334 disclosed.

Bei dem bekannten Stand der Technik tritt daher das Problem auf, dass die Ausführungen zur Federverstellung einen erheblichen Bauraum in Anspruch nehmen, so dass eine schmalbauende Ausführung einer Türbetätigungsvorrichtung nicht möglich ist, um diese vorzugsweise in ein Türblatt zu integrieren oder allgemein an einem Ort einzubauen, an dem nur ein stark begrenzter Bauraum zur Verfügung steht. Weiterhin ergibt sich das Problem, dass bei der Verstellung der Feder über ein axial bewegtes und zusätzlich rotierendes Verstellelement ein Anschlag angefahren wird, bei dem es zu einem Verkontem des Verstellelements mit dem Anschlag kommen kann. Bei nicht rotierend in axialer Richtung geführten Federtellern entsteht das Problem, dass zur Vermeidung der Rotationsbewegung der Federteller im Gehäuse der Vorrichtung axial geführt werden muss, was eine aufwendige Fertigung von Nuten, Mitnehmern und ähnlichem erforderlich macht. Weiterhin können im Gehäuse Anschlagkanten vorgesehen sein, welche als Durchmesserstufen im Gehäuse ausgebildet sind. Diese erfordern einen erheblichen fertigungstechnischen Aufwand, wobei ein Anschlag in Kompressionsrichtung der Druckfeder unumgänglich ist, um eine Überlast der Druckfeder zu vermeiden. Häufig sind Federverstellungen vorgesehen, welche durch ein Bedienelement verstellt werden, welches endseitig am längs ausgebildeten Gehäuse der Vorrichtung mittels eines Werkzeugs bedienbar ist. Bei der Anordnung einer elektrohydraulischen Einheit, welche vorzugsweise an der Endseite des Gehäuses erfolgt, ist eine gleichzeitige Anordnung der Bedienelemente der Federverstellung nicht möglich. Dafür müssen die Bedienelemente der Federverstellung seitlich am Gehäuse herausgeführt werden, was zumeist nur über sehr bauraumintensive Schneckentriebe möglich ist.In the known prior art, therefore, the problem arises that the embodiments for spring adjustment take up a considerable amount of space, so that a narrow construction of a door operating device is not possible to integrate them preferably in a door leaf or generally installed in one place, where only a very limited space is available. Furthermore, there is the problem that during the adjustment of the spring via an axially moving and additionally rotating adjusting a stop is approached, in which it can come to a Verkontem of the adjusting element with the stop. When not rotatably guided in the axial direction spring plates, the problem arises that in order to avoid the rotational movement of the spring plate in the housing of the device must be guided axially, which makes a complicated production of grooves, drivers and the like required. Furthermore, stop edges may be provided in the housing, which are formed as diameter steps in the housing. These require a considerable manufacturing effort, with a stop in the compression direction of the compression spring is essential to avoid overload of the compression spring. Frequently spring adjustments are provided, which are adjusted by an operating element, which end of the longitudinally formed housing of the device by means a tool is operable. In the arrangement of an electro-hydraulic unit, which preferably takes place on the end side of the housing, a simultaneous arrangement of the operating elements of the spring adjustment is not possible. For this, the controls of the spring adjustment must be led out laterally on the housing, which is usually possible only over very space-consuming worm gears.

Es ist daher die Aufgabe der vorliegenden Erfindung, eine Türbetätigungsvorrichtung mit einer Federverstellung zu schaffen, welche einen kleinen Bauraum einnimmt, seitlich vom Gehäuse bedienbar ist sowie einen verkonterungsfreien Anschlag aufweist sowie den fertigungstechnischen Aufwand zu reduzieren.It is therefore an object of the present invention to provide a door operating device with a spring adjustment, which occupies a small space, can be operated from the side of the housing and has a verkonterungsfreien stop and to reduce the manufacturing effort.

Diese Aufgabe wird ausgehend von einer Türbetätigungsvorrichtung gemäß des Oberbegriffs des Anspruchs 1 in Verbindung mit dessen kennzeichnenden Merkmalen gelöst. Vorteilhafte Weiterbildungen der vorliegenden Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved on the basis of a door operating device according to the preamble of claim 1 in conjunction with its characterizing features. Advantageous developments of the present invention are specified in the dependent claims.

Die Erfindung schließt die technische Lehre ein, dass eine Drehbewegung über eine Federverstellhülse in die Federverstellmutter einleitbar ist, und wobei die Federverstellmutter axialbeweglich zur Federverstellhülse angeordnet ist und die Drehbewegung über eine formschlüssige Verbindung übertragbar ist wobei die Federverstellhülse (19) an der Abstützhülse (16) und /oder an der Gewindespindel (17) axial fixiert drehbar angeordnet ist und sich die Gewindespindel (17) durch die Federverstellhülse (19) axial erstreckt wobei die Gewindespindel (17) sowohl in Längsrichtung als auch in Drehrichtung feststeht.The invention includes the technical teaching that a rotational movement via a Federverstellhülse is introduced into the Federverstellmutter, and wherein the Federverstellmutter is arranged axially movable for Federverstellhülse and the rotational movement is transferable via a positive connection wherein the Federverstellhülse (19) on the support sleeve (16). and / or on the threaded spindle (17) is arranged axially fixed rotatably and the threaded spindle (17) through the Federverstellhülse (19) extends axially wherein the threaded spindle (17) is fixed both in the longitudinal direction and in the direction of rotation.

Diese Lösung bietet den Vorteil, dass eine Federverstellung geschaffen wird, welche einen geringen Bauraum einnimmt, und die aufgrund der an der Abstützhülse angeordneten, feststehenden Gewindespindel und der um diese rotierende Federverstellmutter bzw. der Federverstellhülse eine Verstellung der Federvorspannung möglich macht, die mittels einer Verstellmechanik in Längsrichtung seitlich am Gehäuse bedienbar ist. Die Federverstellung umfasst eine gehäusefeste Abstützhülse, wobei die Abstützhülse sowohl in Längsrichtung der Vorrichtung als auch in Rotationsrichtung ortsfest zum Gehäuse angeordnet ist, wobei diese beispielsweise ein Außengewinde aufweist, welches in ein Innengewinde im Gehäuse eingeschraubt ist. An der druckfederseitigen Endfläche der zylinderförmigen Abstützhülse ist eine Gewindespindel angeordnet, welche sowohl in Längsrichtung als auch in Drehrichtung feststeht. Auf der feststehenden Gewindespindel ist eine Federverstellmutter mit einem Innengewinde aufgeschraubt, wobei die Verstellmutter aufgrund einer Drehung auf dem Gewinde der Gewindespindel in axialer Richtung verstellbar ist. Die Federverstellmutter weist einen Federteller auf, auf dem die Druckfeder endseitig aufliegt. Somit kann aufgrund einer Drehbewegung der Federverstellmutter die Vorspannung der Druckfeder erhöht werden, indem die Federverstellmutter in Richtung der Druckfeder auf der Gewindespindel verdreht wird, wobei die Federspannung herabgesetzt werden kann, indem die Federverstellmutter in Richtung der Abstützhülse auf der Gewindespindel verstellt wird. Die Drehbewegung, welche zur axialen Verstellung der Federverstellmutter notwendig ist, wird über eine Federverstellhülse in die Federverstellmutter eingeleitet. Die Federverstellhülse ist relativ zur Federverstellmutter axial beweglich angeordnet, wobei über eine formschlüssige Verbindung die Drehbewegung übertragbar ist. Somit kann die Federverstellhülse in einer axial ortsfesten Position verbleiben, wobei die Federverstellmutter die Axialbewegung ausführt. Diese Anordnung ermöglicht die Einleitung einer Drehbewegung in einer ortsfesten, jedoch rotierenden Federverstellhülse, wobei weiterhin eine axial fixierte sowie rotationsfeste Gewindespindel ebenfalls ortsfest angeordnet werden kann.This solution has the advantage that a spring adjustment is created, which occupies a small space, and arranged due to the arranged on the support sleeve, fixed threaded spindle and rotating around this Federverstellmutter or Federverstellhülse a Adjustment of the spring preload makes possible, which is operated by means of an adjusting mechanism in the longitudinal direction of the side of the housing. The spring adjustment comprises a housing-fixed support sleeve, wherein the support sleeve is arranged both in the longitudinal direction of the device and in the rotational direction stationary to the housing, which for example has an external thread which is screwed into an internal thread in the housing. At the pressure spring-side end face of the cylindrical support sleeve, a threaded spindle is arranged, which is fixed both in the longitudinal direction and in the direction of rotation. On the fixed threaded spindle a Federverstellmutter is screwed with an internal thread, wherein the adjusting nut is adjustable due to rotation on the thread of the threaded spindle in the axial direction. The Federverstellmutter has a spring plate on which the compression spring rests end. Thus, due to a rotational movement of the Federverstellmutter the bias of the compression spring can be increased by the Federverstellmutter is rotated in the direction of the compression spring on the threaded spindle, wherein the spring tension can be reduced by the Federverstellmutter is adjusted in the direction of the support sleeve on the threaded spindle. The rotational movement, which is necessary for the axial adjustment of the spring adjustment, is introduced via a spring adjustment in the Federverstellmutter. The spring adjusting sleeve is arranged to be axially movable relative to the spring adjusting nut, wherein the rotational movement can be transmitted via a positive connection. Thus, the Federverstellhülse remain in an axially stationary position, the Federverstellmutter performs the axial movement. This arrangement allows the initiation of a rotational movement in a stationary, but rotating Federverstellhülse, wherein furthermore an axially fixed and rotationally fixed threaded spindle can also be arranged stationary.

Diese Anordnung ermöglicht damit eine durchrutschfreie und verkonterungsfreie Federverstellung ohne Anschläge oder Verdrehsicherungen im Gehäuse für die Federverstellmutter. Die drehfeste Spindel übernimmt statt des Gehäuses die Gegenmomente von der Gewindereibung und dem Lösen aus den Endanschlägen auf.This arrangement thus allows a slip-free and verkonterungsfreie spring adjustment without stops or anti-rotation in the housing for the Federverstellmutter. The non-rotatable spindle takes over instead of the housing on the counter moments of the thread friction and the release of the end stops.

Als eine vorteilhafte Ausführungsform der Erfindung ist vorgesehen, dass die formschlüssige Verbindung zwischen der Federverstellmutter und der Federverstellhülse eine in axialer Richtung gleichförmige Polygonkontur umfasst, welche innenseitig in der Federverstellhülse und außenseitig an der Federverstellmutter ausgebildet ist, wobei die innenseitige und die außenseitige Polygonkontur ineinander gefügt angeordnet ist, um relativ zueinander rotationsfest eine Axialbewegung zu ermöglichen. Als Polygonkontur kann beispielsweise ein Sechskant vorgesehen sein, wobei ebenso ein Vierkant, ein Achtkant oder ein anderes beliebiges Polygon vorgesehen werden kann. Ebenso ist die Anwendung einer Keilverzahnung möglich, welche ebenfalls ein Drehmoment übertragen kann, und zugleich zwischen den ineinander gefügten Komponenten wie der Federverstellmutter und der Federverstellhülse eine Axialbewegung zulässt. Alternative Ausführungsformen der axial beweglichen Drehverbindung können in der Anwendung von Nutensteinen oder Passfedern gesehen werden, welche im Sinne einer Welle-Nabe-Verbindung ausgeführt sein kann.As an advantageous embodiment of the invention, it is provided that the positive connection between the Federverstellmutter and the Federverstellhülse comprises a uniform in the axial direction polygonal contour, which is formed on the inside in the Federverstellhülse and on the outside of the Federverstellmutter, wherein the inside and the outside polygon contour arranged one inside the other is to allow relative to each other rotationally fixed an axial movement. As a polygon contour, for example, a hexagon can be provided, wherein also a square, an octagon or any other polygon can be provided. Likewise, the use of a spline is possible, which also can transmit torque, and at the same time allows an axial movement between the nested components such as the Federverstellmutter and Federverstellhülse. Alternative embodiments of the axially movable rotary joint can be seen in the application of sliding blocks or keyways, which may be designed in the sense of a shaft-hub connection.

Die Federverstellhülse ist an der Abstützhülse und /oder an der Gewindespindel axial fixiert drehbar angeordnet und die Gewindespindel erstreckt sich axial durch die Federverstellhülse. Die Gewindespindel ist endseitig in die Abstützhülse eingeschraubt, und weist einen Kragen auf, welcher zwischen der Endfläche der Abstützhülse und dem Kragen selbst die Ausbildung eines zylinderförmigen Abschnittes bietet, welcher als Gleitlager ausgebildet ist. Die Federverstellhülse weist einen zylinderförmigen Innenabschnitt auf, welcher auf dem Zylinderabschnitt der Gewindespindel aufgesetzt ist. Wird die Gewindespindel nun endseitig in die Abstützhülse eingeschraubt, so ist die Federverstellhülse axial fixiert, und aufgrund der Gleitlageranordnung drehbar gelagert. Somit ist die Federverstellhülse koaxial mit einem Abschnitt der Gewindespindel angeordnet, wobei die Federverstellmutter in die Federverstellhülse eintauchen kann. Mittels dieser Anordnung ist eine maximale Ausnutzung des Bauraums möglich, wobei sich die Gewindespindel zumindest abschnittsweise und in Abhängigkeit von der eingestellten Position in die Druckfeder hineinstreckt.The spring adjustment sleeve is rotatably arranged axially fixed to the support sleeve and / or on the threaded spindle and the threaded spindle extends axially through the Federverstellhülse. The threaded spindle is screwed into the end of the support sleeve, and has a collar which between the end face of the support sleeve and the collar itself provides the formation of a cylindrical portion which is formed as a sliding bearing. The spring adjustment sleeve has a cylindrical inner portion which is placed on the cylinder portion of the threaded spindle. If the threaded spindle is now screwed into the support sleeve at the end, then the spring adjustment sleeve is axially fixed, and rotatably supported due to the sliding bearing arrangement. Thus, the Federverstellhülse is arranged coaxially with a portion of the threaded spindle, wherein the Spring adjusting nut can dip into the spring adjusting sleeve. By means of this arrangement, a maximum utilization of the space is possible, wherein the threaded spindle extends at least in sections and in dependence on the set position in the compression spring.

Als eine vorteilhafte Weiterbildung der Erfindung wird vorgeschlagen, dass mit der Federverstellhülse ein erstes Zahnrad rotationsfest verbunden ist, über welches die Drehbewegung in die Federverstellhülse einleitbar ist. Das erste Zahnrad steht dabei mit einem zweiten Zahnrad im Eingriff, wobei die Rotationsebenen der Zahnräder einen Winkel von etwa 90° zueinander einnehmen. Das erste Zahnrad kann dabei auf dem Abschnitt des Gleitlagers zwischen der Federverstellhülse und der Gewindespindel auf der Federverstellhülse aufgepresst sein oder ebenfalls ein Polygon umfassen, um dieses verdrehfest gegenüber der Federverstellhülse anzuordnen. Ein zweites Zahnrad ist 90° versetzt zum ersten Zahnrad angeordnet, wobei der Winkel die senkrecht aufeinander stehenden Orthogonalen der Rotationsebenen der Zahnräder beschreibt. Somit kann die Drehbewegung aus einer Richtung senkrecht zur Längsachse der Türbetätigungsvorrichtung und damit senkrecht zur Längsachse der Gewindespindel bzw. der Federverstellung eingeleitet werden. Mögliche Ausführungsformen der Verzahnung können eine Kegelradverzahnung sein, wobei ebenfalls eine Kronenradverzahnung vorgesehen sein kann. Dabei ist lediglich die Übertragung einer Drehbewegung über einen Winkel von 90° erforderlich, so dass auch jede weitere Verzahnungsmöglichkeit im Sinne der vorliegenden Erfindung anwendbar ist.As an advantageous development of the invention, it is proposed that a first gear is rotatably connected to the Federverstellhülse, via which the rotational movement is introduced into the Federverstellhülse. The first gear is engaged with a second gear, wherein the rotational planes of the gears occupy an angle of about 90 ° to each other. The first gear may be pressed onto the portion of the sliding bearing between the Federverstellhülse and the threaded spindle on the Federverstellhülse or also include a polygon in order to arrange rotationally relative to the Federverstellhülse. A second gear is arranged offset 90 ° to the first gear, wherein the angle describes the orthogonal to each other of the rotational planes of the gears. Thus, the rotational movement can be initiated from a direction perpendicular to the longitudinal axis of the door operating device and thus perpendicular to the longitudinal axis of the threaded spindle or the spring adjustment. Possible embodiments of the toothing may be a bevel gear, wherein also a crown gear can be provided. In this case, only the transmission of a rotational movement over an angle of 90 ° is required, so that any further toothing option in the context of the present invention is applicable.

Das zweite Zahnrad ist mittels einer Zahnradaufnahme im Gehäuse drehbar gelagert, welches so positioniert ist, dass dieses exakt mit dem ersten Zahnrad in Eingriff steht. Die Positionierung kann beispielsweise über eine Durchmesserstufe realisiert werden, an die die Abstützhülse anstößt, wobei das erste Zahnrad plan an der Endfläche der Abstützhülse anliegt. Die Zahnradaufnahme zur Aufnahme des zweiten Zahnrades im Gehäuse ist gegenüber dem Gehäuse druckdicht ausgeführt, wobei die Abdichtung über O-Ringe realisiert wird. Die Zahnradaufnahme kann von der Außenseite des Gehäuses der Vorrichtung eingeschraubt werden, wobei die Positionierung zur Sicherstellung einer exakten Verzahnung über einen Anschlagbund vorgesehen werden kann, welcher in der Zahnradaufnahme ausgebildet ist. Die Zahnradaufnahme weist dabei eine Werkzeugaufnahme auf, um mittels eines Werkzeugs von der Außenseite des Gehäuses die Drehbewegung in die Verzahnung und damit in die Verstellmutter einzuleiten. Die Werkzeugaufnahme kann dabei einen Innensechskant umfassen, so dass mit einem Inbusschlüssel die Vorspannung der Druckfeder verstellt werden kann. Die Werkzeugaufnahme in der Zahnradaufnahme kann dabei bündig mit der Außenseite des Gehäuses der Türbetätigungsvorrichtung abschließen, so dass keine Komponenten aus der Vorrichtung hervorstehen, um einen Einbau beispielsweise in ein Türblatt sicherzustellen. Beim Einbau der Türbetätigungsvorrichtung in ein Türblatt weist die Werkzeugaufnahme beispielsweise nach oben, so dass ein Bediener mittels eines Werkzeugs die Vorspannung der Druckfeder und damit das Rückstellmoment, welches die Türbetätigungsvorrichtung auf das Türblatt ausübt, mittels eines Werkzeugs von oben verstellen kann. Wird die Türbetätigungsvorrichtung beispielsweise in den Rahmen einer Tür eingebaut, so kann die Werkzeugaufnahme in Richtung des Türblattes angeordnet sein, so dass der Bediener die Verstellung kopfüber vornimmt.The second gear is rotatably supported by a gear receptacle in the housing, which is positioned so that it is exactly in engagement with the first gear. The positioning can be realized for example via a diameter stage, to which the support sleeve abuts, wherein the first gear rests flat against the end face of the support sleeve. The Gear receptacle for receiving the second gear in the housing is pressure-tight relative to the housing, wherein the seal is realized via O-rings. The gear receptacle can be screwed from the outside of the housing of the device, wherein the positioning can be provided to ensure an exact toothing via a stop collar, which is formed in the gear receptacle. The gear receptacle in this case has a tool holder in order to initiate the rotational movement in the toothing and thus in the adjusting nut by means of a tool from the outside of the housing. The tool holder may comprise a hexagon socket, so that with an Allen key, the bias of the compression spring can be adjusted. The tool holder in the gear holder can be flush with the outside of the housing of the door operating device, so that no components protrude from the device to ensure installation, for example in a door leaf. When installing the door operating device in a door leaf, the tool holder, for example, upwards, so that an operator by means of a tool, the bias of the compression spring and thus the restoring torque which exerts the door operating device on the door leaf, can adjust by means of a tool from above. If the door operating device is installed, for example, in the frame of a door, then the tool holder can be arranged in the direction of the door leaf, so that the operator performs the adjustment upside down.

Leitet der Bediener nun mit einem Werkzeug eine Drehbewegung in die Werkzeugaufnahme und damit in die Zahnradaufnahme ein, so wird das zweite Zahnrad in Drehung versetzt. Durch den Eingriff mit dem ersten Zahnrad wird die Drehbewegung über einen Winkel von 90° auf die Längsachse der Türbetätigungsvorrichtung übertragen, so dass das erste Zahnrad die Drehbewegung aufnimmt. Aufgrund der verdrehfesten Anordnung des ersten Zahnrads auf der Federverstellhülse wird diese ebenfalls in Drehung versetzt. Damit rotiert die Federverstellhülse auf der feststehenden Gewindespindel, wobei die Federverstellmutter in der Federverstellhülse koaxial angeordnet ist. Aufgrund der formschlüssigen Verbindung über ein Polygon zwischen der Federverstellhülse und der Federverstellmutter wird nunmehr die Drehbewegung auf die Federverstellmutter übertragen, welche aufgrund des Gewindelaufs auf der Gewindespindel eine Axialbewegung ausführt. Läuft die Federverstellmutter nun entlang der Gewindespindel in Richtung der Druckfeder, so wird die Federvorspannung erhöht, und das Rückstellmoment, welches die Türbetätigungsvorrichtung auf das Türblatt ausübt, steigt. Weist die Drehbewegung eine Drehrichtung auf, so dass sich die Federverstellmutter in Richtung der Abstützhülse bewegt, so sinkt die Federvorspannung, was ein niedrigeres Rückstellmoment verursacht, welches die Türbetätigungsvorrichtung auf das Türblatt ausübt. Somit ist es möglich, mittels einer einfachen Verstellung das Rückstellmoment in Abhängigkeit der Türgröße, insbesondere der Türbreite und des Türgewichtes anzupassen, so dass die entsprechenden gesetzlichen Vorgaben (EN3... EN6) eingehalten werden können. Dies gilt insbesondere beim Einsatz für Brandschutztüren, bei denen Mindestrückstellmomente vorgegeben sind.If the operator now initiates a rotary movement with a tool into the tool holder and thus into the gear holder, the second gear wheel is set in rotation. By engaging with the first gear, the rotational movement is transmitted through an angle of 90 ° to the longitudinal axis of the door operating device, so that the first gear receives the rotational movement. Due to the rotationally fixed arrangement of the first gear on the Federverstellhülse this is also rotated. This rotates the Federverstellhülse on the fixed Threaded spindle, wherein the Federverstellmutter is arranged coaxially in the Federverstellhülse. Due to the positive connection via a polygon between the Federverstellhülse and the Federverstellmutter now the rotational movement is transmitted to the Federverstellmutter, which performs an axial movement due to the Gewindindelaufs on the threaded spindle. Now runs the spring adjusting nut along the threaded spindle in the direction of the compression spring, the spring preload is increased, and the restoring torque which exerts the door operating device on the door leaf increases. If the rotational movement has a direction of rotation, so that the spring adjustment nut moves in the direction of the support sleeve, the spring preload decreases, which causes a lower restoring moment, which exerts the door operating device on the door leaf. Thus, it is possible to adjust by means of a simple adjustment, the restoring moment depending on the door size, in particular the door width and the door weight, so that the corresponding legal requirements (EN3 ... EN6) can be met. This is especially true when used for fire doors, where minimum restoring torques are given.

Vorteilhafterweise umfasst die Gewindespindel einen Federverstellanschlag, an den die Federverstellmutter bei einer Schraubbewegung auf der Gewindespindel in Richtung der Druckfeder anstößt und die Schraubbewegung begrenzt. Die Federverstellmutter besitzt eine ringförmige Endfläche, welche an einer Ausformung angebracht ist, die sich über dem Federteller hinaus in Richtung der Druckfeder erstreckt. Wird nun die Federverstellmutter in Richtung der Druckfeder verstellt, so stößt bei Erreichen des maximalen Verstellweges die ringförmige Endfläche der Federverstellmutter an den Federverstellanschlag an.Advantageously, the threaded spindle comprises a spring adjustment stop, against which the spring adjusting nut abuts on the threaded spindle in the direction of the compression spring during a screwing movement and limits the screwing movement. The spring adjusting nut has an annular end surface which is attached to a formation which extends beyond the spring plate in the direction of the compression spring. Now, if the Federverstellmutter adjusted in the direction of the compression spring, abuts the annular end face of the Federverstellmutter to the spring adjustment stop when reaching the maximum adjustment.

Aus konstruktiven Gründen ist es von besonderem Vorteil, dass der Federverstellanschlag eine Anschlagscheibe umfasst, welche auf der Gewindespindel aufgenommen ist. Die Anschlagscheibe weist dabei ein Axialspiel auf, wobei das Axialspiel etwa 0,1 mm bis 1 mm, vorzugsweise etwa 0,3 mm bis 0,8 mm und besonders bevorzugt etwa 0,4 mm bis 0,5 mm umfasst. Die Anschlagscheibe wird dabei auf die Gewindespindel aufgesetzt und mittels einer Gegenmutter gesichert. Das genannte Axialspiel stellt sich somit zwischen einem Bund auf der Gewindespindel, auf dem die Axialscheibe aufliegt und der Gegenmutter ein. Jedenfalls dient das Axialspiel dazu, dass die Anschlagscheibe drehbar ist, so dass bei einem Anstoßen der Federverstellmutter an die Anschlagscheibe kein Verkontern auftreten kann. Der wirksame Reibdurchmesser zwischen der Anschlagscheibe und der Gegenmutter ist kleiner als zwischen der Anschlagscheibe und der ringförmigen Endfläche der Federverstellmutter, so dass auch bei einem sehr festen Verdrehen gegen den Federverstellanschlag jederzeit ein Lösen des Anschlags ohne großen Kraftaufwand möglich ist. Insbesondere beim Anschlag in Richtung der Federkompression treten vergleichsweise hohe Kräfte auf, wobei der Bediener keine Information darüber erhält, an welcher Position sich die Federverstellmutter befindet. Daher kann es durch ein verkonterungsfreies Verspannen der Federverstellmutter mit dem Federverstellanschlag nicht zu einem Versagen des Systems kommen, denn zur Verstellung in Losdrehrichtung muss keine Kraftspitze überwunden werden, da die Anschlagscheibe mitdrehen kann.For design reasons, it is of particular advantage that the spring adjustment stop comprises a stop disc, which is accommodated on the threaded spindle. The stop disc has an axial play wherein the axial play comprises about 0.1 mm to 1 mm, preferably about 0.3 mm to 0.8 mm and particularly preferably about 0.4 mm to 0.5 mm. The stop disc is placed on the threaded spindle and secured by a locknut. The said axial clearance thus arises between a collar on the threaded spindle, on which rests the axial disc and the lock nut. In any case, the axial clearance is used so that the stop disc is rotatable, so that when abutting the Federverstellmutter to the stop plate no Verkontern can occur. The effective friction diameter between the stopper plate and the locknut is smaller than between the stopper plate and the annular end face of the spring adjusting, so that even at a very firm twisting against the Federverstellanschlag at any time a release of the attack is possible without much effort. In particular, the stop in the direction of the spring compression occur relatively high forces, the operator receives no information about where the spring adjusting nut is located. Therefore, it can not come to a failure of the system by a verkonterungsfreies bracing the Federverstellmutter with the spring adjustment stop, because to adjust in Losdrehrichtung no force peak must be overcome, since the stop plate can rotate.

Eine vorteilhafte Ausführungsform der Gegenmutter sieht vor, dass diese einen Zylinderabschnitt aufweist, welcher eine Zentrierung einer in der Druckfeder angeordneten zweiten Druckfeder ermöglicht. Die zweite Druckfeder ist koaxial mit der ersten Druckfeder angeordnet und dient der Erhöhung der maximal möglichen Federkraft auf die Antriebseinheit. Die zweite Druckfeder weist einen Innendurchmesser auf, welcher derart über den Zylinderabschnitt passt, so dass die Feder durch die Gegenmutter zentrierbar ist. An der Gegenmutter ist endseitig ein Sechskant ausgebildet, wobei zwischen dem Federanschlag und dem Gewindeabschnitt der Gewindespindel ebenfalls ein Sechskant ausgebildet ist. Beim Fügen der Gewindespindel in die Endfläche der Abstützhülse sowie beim Fügen der Gegenmutter auf ein endseitig in Richtung der Druckfeder ausgebildetes Gewinde auf der Gewindespindel können entsprechende Werkzeuge angewendet werden, um über die Sechskantausbildungen die Gegenmutter mit der Gewindespindel zu verkontern bzw. die Gewindespindel in die Abstützhülse fest einzuschrauben. Die zweite Druckfeder stützt sich dabei axial rückseitig auf der Anschlagscheibe ab, so dass diese sowohl die Funktion eines Federtellers erfüllt, als auch als Anschlag der Federverstellmutter auf der Gewindespindel dient.An advantageous embodiment of the locknut provides that this has a cylinder portion which allows centering of a pressure spring arranged in the second compression spring. The second compression spring is arranged coaxially with the first compression spring and serves to increase the maximum possible spring force on the drive unit. The second compression spring has an inner diameter which so fits over the cylinder portion, so that the spring is centered by the lock nut. At the end nut a hexagon is formed at the end, wherein between the spring stopper and the threaded portion of the threaded spindle also a hexagon is formed. When joining the threaded spindle in the end face of the support sleeve and when joining the Locknut on a trained end in the direction of the compression spring thread on the threaded spindle corresponding tools can be applied to verkontern over the hexagonal formations the lock nut with the threaded spindle and screw the threaded spindle firmly into the support sleeve. The second compression spring is supported axially on the back of the stop plate, so that it fulfills both the function of a spring plate, and serves as a stop of the Federverstellmutter on the threaded spindle.

Die Türbetätigungsvorrichtung kann mit einer elektrohydraulischen Antriebseinheit versehen werden, wobei durch ein Drucköl Druckräume beaufschlagbar sind, um im Gehäuse der Vorrichtung angeordnete axialbewegliche Kolben derart zu verstellen, dass die Antriebseinheit zur Betätigung der Drehtür betreibbar ist. Diese elektrohydraulischen Antriebe dienen insbesondere zur Ausführung der Öffnungsbewegung der Drehtür, wobei zugleich die Druckfeder des Federkraftspeichers hydraulisch gespannt wird, um eine anschließende Schließbewegung allein durch die in dem Federkraftspeicher gespeicherten Energie auszuführen. Auch Türbetätigungsvorrichtungen ohne elektrohydraulischen Antrieb weisen häufig ein ölhydraulisches Fluidsystem auf, welches meist einen geschlossenen Kreislauf umfasst. Häufig werden die in den Gehäusen der Vorrichtungen axial beweglichen Kolben wechselseitig Druck beaufschlagt, wobei das Öl über Ölkanäle, welche vorzugsweise im Gehäuse selbst eingebracht sind, geleitet wird. Jedenfalls wird für ein geschlossenes System eine Druckausgleichseinheit benötigt, da bei einem Temperaturanstieg aufgrund der Ausdehnung des Öls der Öldruck im geschlossenen Fluidsystem der Vorrichtung stark ansteigen kann. In Abhängigkeit von der auftretenden Temperatur können Öldrücke entstehen, welche sogar eine Beschädigung des Gehäuses hervorrufen können. Druckausgleichseinheiten weisen dabei einen Volumenspeicher auf, welcher eine Volumennachgiebigkeit bietet, so dass sich der Volumenspeicher bei einem Ausdehnen des Öls verkleinern kann, um die genannten Drucküberhöhungen zu vermeiden.The door actuating device can be provided with an electro-hydraulic drive unit, wherein pressure chambers can be acted upon by a pressurized oil in order to adjust axially movable pistons arranged in the housing of the device in such a way that the drive unit can be operated to operate the revolving door. These electrohydraulic drives are used in particular for carrying out the opening movement of the revolving door, wherein at the same time the compression spring of the spring force accumulator is hydraulically tensioned to carry out a subsequent closing movement solely by the energy stored in the spring accumulator. Even door actuators without electro-hydraulic drive often have an oil-hydraulic fluid system, which usually includes a closed circuit. Often, the pistons, which are axially movable in the housings of the devices, are pressurized alternately, whereby the oil is conducted via oil passages, which are preferably introduced into the housing itself. Anyway, for a closed system, a pressure compensation unit is needed, as with a temperature increase due to the expansion of the oil, the oil pressure in the closed fluid system of the device can increase sharply. Depending on the temperature, oil pressures can occur, which can even damage the housing. In this case, pressure equalization units have a volume accumulator which offers volumetric compliance, so that the volume accumulator can shrink when the oil expands, in order to avoid the mentioned pressure peaks.

Daher ist als eine vorteilhafte Weiterbildung der Erfindung vorgesehen, dass die Türbetätigungsvorrichtung eine Druckausgleichseinheit umfasst, wobei die Abstützhülse der Federverstellung als Druckausgleichseinheit ausgebildet ist. Damit nimmt die Abstützhülse die Funktion der Aufnahme der Federverstellung im Gehäuse wahr, und dient zugleich als Druckausgleichseinheit, da die Abstützhülse mit einem entsprechenden Volumenspeicher ausgebildet werden kann. Diese vorteilhafte Weiterbildung der Erfindung bietet eine hohe Integrationsdichte, da Komponenten der Federverstellung zugleich die Funktion einer Druckausgleichseinheit umfassen.Therefore, it is provided as an advantageous development of the invention that the door actuating device comprises a pressure compensation unit, wherein the support sleeve of the spring adjustment is designed as a pressure compensation unit. Thus, the support sleeve takes the function of receiving the spring adjustment in the housing true, and also serves as a pressure compensation unit, since the support sleeve can be formed with a corresponding volume memory. This advantageous development of the invention offers a high integration density, since components of the spring adjustment at the same time include the function of a pressure compensation unit.

Vorteilhafterweise umfasst die Abstützhülse einen Zylinder, in welchem ein Kolben axial beweglich aufgenommen ist, wobei die Abstützhülse weiterhin ein Verschlusselement aufweist, um eine Druckausgleichskammer zu bilden. Die Druckausgleichskammer dient dabei als Volumenspeicher, wobei die Kammer aus dem Innenraum des Zylinders gebildet ist, welche einerseits durch das Verschlusselement begrenzt ist und andererseits durch den axial beweglichen Kolben abgeschlossen ist. Dehnt sich nun das Öl im geschlossenen System der Türbetätigungsvorrichtung aus, so bewegt sich der Kolben axial in den Zylinder hinein, so dass sich das Volumen verkleinert. Zieht sich das Öl wieder zusammen, bewegt sich der Kolben axial wieder aus dem Zylinder heraus, und vergrößert das Volumen der Druckausgleichskammer. Die Druckausgleichskammer ist aufgrund einer allseitigen Abdichtung druckdicht ausgebildet, so dass bei einer Bewegung des Kolbens in den Zylinder hinein durch die entstehende Kompression eine Erhöhung des Innendrucks der Druckausgleichskammer erfolgt. Diese ist meist mit Luft gefüllt, so dass die Luft komprimiert wird. Zudem befindet sich eine Druckfeder zwischen dem Verschlusselement und dem Kolben, welche ebenfalls komprimiert wird, und der Kolben bei einem Absinken des Druckes des Öls in der Vorrichtung das Volumen im Zylinder wieder erhöhen kann, da die Druckfeder den Kolben wieder aus dem Zylinder herausschiebt. Der Kolben ist mittels zumindest eines Dichtelements dynamisch druckdicht gegen die Innenwand des Zylinders abgedichtet, wobei die Dichtelemente vorzugsweise aus zwei Lippendichtungen gebildet sind.Advantageously, the support sleeve comprises a cylinder in which a piston is received axially movable, wherein the support sleeve further comprises a closure element to form a pressure compensation chamber. The pressure compensation chamber serves as a volume storage, wherein the chamber is formed from the interior of the cylinder, which is bounded on the one hand by the closure element and on the other hand is closed by the axially movable piston. If the oil now expands in the closed system of the door operating device, then the piston moves axially into the cylinder, so that the volume decreases. When the oil contracts again, the piston moves axially out of the cylinder and increases the volume of the pressure compensation chamber. The pressure compensation chamber is formed pressure-tight due to an all-round seal, so that when the piston moves into the cylinder through the resulting compression, an increase in the internal pressure of the pressure compensation chamber. This is usually filled with air, so that the air is compressed. In addition, there is a compression spring between the closure element and the piston, which is also compressed, and the piston can increase the volume in the cylinder again with a decrease in the pressure of the oil in the device, since the compression spring the piston again pushes out of the cylinder. The piston is sealed by means of at least one sealing element dynamically pressure-tight against the inner wall of the cylinder, wherein the sealing elements are preferably formed from two lip seals.

Aus konstruktiven Gründen ist es von besonderem Vorteil, dass die Federverstellung mit der als Druckausgleichskammer ausgebildeten Abstützhülse als einzeln vormontierbare Einheit ausgebildet ist, welche über ein Gewinde in das Gehäuse der Vorrichtung einschraubbar ist. Das Gewinde ist dabei außenseitig an der Abstützhülse ausgebildet, wobei die Abstützhülse ebenfalls Dichtelemente aufweisen kann, um zugleich eine Abdichtung des Innenraums des Gehäuses der Vorrichtung mittels der eingeschraubten Abstützhülse zu schaffen.For design reasons, it is of particular advantage that the spring adjustment is formed with the support sleeve formed as a pressure compensation chamber as a single preassembled unit which is screwed via a thread in the housing of the device. The thread is formed on the outside of the support sleeve, wherein the support sleeve may also have sealing elements, at the same time to create a seal of the interior of the housing of the device by means of the screwed-support sleeve.

Weitere, die Erfindung verbessernde Maßnahmen sind in den Unteransprüchen angegeben oder werden nachfolgend gemeinsam mit der Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung anhand der Figuren näher dargestellt.Further, measures improving the invention are specified in the subclaims or will be described in more detail below together with the description of a preferred embodiment of the invention with reference to FIGS.

Diese zeigen in

Fig. 1:
Eine quergeschnittene Seitenansicht einer Türbetätigungs- vorrichtung mit einer Federverstellung gemäß der vorliegen- den Erfindung;
Fig. 2:
einen vergrößerten Ausschnitt der Federverstellung der Tür- betätigungsvorrichtung aus Fig. 1;
Fig. 3:
eine Darstellung einer Federverstellung gemäß der vorlie- genden Erfindung; und
Fig. 4:
eine perspektivische Ansicht der Federverstellung aus Fig. 3 in einem nicht montierten Zustand.
These show in
Fig. 1:
A cross-sectional side view of a door operating device with a spring adjustment according to the present invention;
Fig. 2:
an enlarged section of the spring adjustment of the door operating device Fig. 1 ;
3:
an illustration of a spring adjustment according to the present invention; and
4:
a perspective view of the spring adjustment Fig. 3 in a non-assembled state.

In Fig. 1 ist eine Türbetätigungsvorrichtung 1 dargestellt, welche insbesondere für eine Drehtür geeignet ist und beispielsweise in einem Türblatt oder in einen Türrahmen eingebaut werden kann. Die Türbetätigungseinrichtung 1 umfasst eine Antriebseinheit 10, welche gemäß dem vorliegenden Ausführungsbeispiel mit einer Tür koppelbar ist. Die Türbetätigungsvorrichtung 1 besteht aus einem Gehäuse 11, in dem ein Federkraftspeicher 12 angeordnet ist. Der Federkraftspeicher 12 ermöglicht die Speicherung einer Energie in Form einer Federkompression, welche beim Öffnen der Tür durch die Kompression einer Druckfeder 13 gespeichert wird. Wird nun die Tür wieder geschlossen, so wirkt der Federkraftspeicher 12 auf die Antriebseinheit 10, welche derart mit der Drehtür verbunden ist, dass diese eine Schließbewegung ausführt. Der Federkraftspeicher 12 umfasst eine Federverstellung 15, mittels der die Vorspannkraft in der Druckfeder 13 einstellbar ist. Die Federverstellung 15 ist zumindest aus einer gehäusefesten Abstützhülse 16 aufgebaut, an der eine feststehende Gewindespindel 17 angeordnet ist. Auf der Gewindespindel 17 ist eine Federverstellmutter 18 aufgeschraubt, wobei die Federverstellmutter 18 über eine Federverstellhülse 19 verstellt werden kann. Die Federverstellmutter 18 ist mit der Federverstellhülse 19 drehfest über eine formschlüssige Verbindung verbunden, sodass diese sich zwar axial zueinander verschieben können, sich jedoch nicht gegeneinander verdrehen.In Fig. 1 a door operating device 1 is shown, which is particularly suitable for a revolving door and can be installed for example in a door leaf or in a door frame. The door operating device 1 comprises a drive unit 10, which can be coupled to a door according to the present exemplary embodiment. The door operating device 1 consists of a housing 11 in which a spring energy accumulator 12 is arranged. The spring energy accumulator 12 allows the storage of energy in the form of a spring compression, which is stored by the compression of a compression spring 13 when the door is opened. Now, if the door is closed again, the spring force memory 12 acts on the drive unit 10, which is connected to the revolving door such that it performs a closing movement. The spring force accumulator 12 includes a spring adjustment 15, by means of which the biasing force in the compression spring 13 is adjustable. The spring adjustment 15 is constructed at least from a housing-fixed support sleeve 16, on which a fixed threaded spindle 17 is arranged. On the threaded spindle 17, a Federverstellmutter 18 is screwed, wherein the Federverstellmutter 18 can be adjusted by a Federverstellhülse 19. The Federverstellmutter 18 is rotatably connected to the Federverstellhülse 19 via a positive connection, so that they can indeed move axially to each other, but not rotate against each other.

Der elektrohydraulische Antrieb 14 umfasst einen elektrischen Spezialmotor sowie eine Hydraulikeinheit, welche wahlweise über ein Getriebe durch den Motor angetrieben wird. Gemäß dem Ausführungsbeispiel der Türbetätigungsvorrichtung 1 besitzt diese mittels des elektrohydraulischen Antriebs 14 die Möglichkeit, auch die Öffnungsbewegung der Drehtür selbsttätig auszuführen, wobei während der Öffnungsbewegung die Drehtür in Bewegung gesetzt wird, sowie die Druckfeder 13 aufgrund eines sich axial bewegenden an die Druckfeder 13 angrenzenden Kolbens 20 gespannt wird. Über die druckbeaufschlagten Kolben 20, 21 wird dabei die Öffnungsbewegung der Drehtür eingeleitet, wobei die Antriebseinheit 10 eine Nocken-Rollen-Einheit zur Umsetzung der Axialbewegung des Kolbens 20 und 21 in eine Rotationsbewegung einer Welle 22 umfasst. Die genannten Komponenten sind innerhalb des Gehäuses 11 angeordnet, so dass die Türbetätigungsvorrichtung 1 aufgrund der schmalen Ausbildung mit einer Breite von beispielsweise 40 mm in eine Vielzahl von Drehtüren innerhalb der Türblätter eingebaut werden kann. Somit besteht die Möglichkeit, die Türbetätigungsvorrichtung von außen unsichtbar in die Tür zu integrieren. Die Kolben 20 und 21 werden über jeweils angrenzende Druckkammern mit einem hydraulischen Fluid beaufschlagt, wobei der Fluiddruck über den elektrohydraulischen Antrieb 14 zur Verfügung gestellt wird. Die Fluidverbindungen können in Form von Kanälen ausgebildet sein, welche im Gehäuse 11 integriert sind.The electrohydraulic drive 14 comprises a special electric motor and a hydraulic unit, which is selectively driven via a transmission by the motor. According to the embodiment of the door operating device 1, this has by means of the electro-hydraulic drive 14 the possibility to perform the opening movement of the revolving door automatically, during the opening movement, the revolving door is set in motion, and the compression spring 13 due to an axially moving adjacent to the compression spring 13 piston 20 tense becomes. The opening movement of the revolving door is initiated via the pressurized pistons 20, 21, wherein the drive unit 10 comprises a cam-roller unit for converting the axial movement of the piston 20 and 21 into a rotational movement of a shaft 22. The said components are arranged inside the housing 11, so that the door operating device 1 can be installed in a plurality of revolving doors within the door leaves due to the narrow formation with a width of for example 40 mm. Thus, it is possible to integrate the door operating device invisible from the outside into the door. The pistons 20 and 21 are acted upon via respective adjacent pressure chambers with a hydraulic fluid, wherein the fluid pressure via the electro-hydraulic drive 14 is provided. The fluid connections may be in the form of channels which are integrated in the housing 11.

Fig. 2 zeigt einen Ausschnitt aus der Türbetätigungsvorrichtung 1, so dass insbesondere die Federverstellung 15 detailliert dargestellt ist. Die Federverstellung 15 umfasst eine Gewindespindel 17, welche in die Abstützhülse 16 endseitig eingeschraubt ist. Damit ist die Gewindespindel 17 sowohl in axialer Richtung als auch in Drehrichtung fixiert. Über der ruhenden Gewindespindel 17 ist die Federverstellmutter 18 angeordnet, welche sich in eine Federverstellhülse 19 hinein erstreckt. Die Federverstellhülse 19 ist verdrehfest mit einem ersten Zahnrad 23 verbunden, welches zwischen der Abstützhülse 16 und der Federverstellhülse 19 axial fixiert angeordnet ist. Das erste Zahnrad 23 ist mit einem zweiten Zahnrad 24 verzahnt, wobei die Verzahnung gemäß des vorliegenden Ausführungsbeispiels eine Kegelradverzahnung umfasst. Damit ist eine Übertragung der Drehbewegung über einen Winkel von 90° möglich, so dass das zweite Zahnrad 24 relativ zum ersten Zahnrad 23 unter einem Winkel von etwa 90° angeordnet ist. Das zweite Zahnrad 24 ist in einer Zahnradaufnahme 25 aufgenommen, welche ortsfest und drehbar im Gehäuse 11 gelagert ist. Wird nun mittels eines Werkzeugs 26, welches in die Werkzeugaufnahme 27 einsteckbar ist, eine Drehbewegung in die Werkzeugaufnahme 27 und damit in das zweite Zahnrad 24 eingeleitet, so wird die Drehbewegung über das sich im Zahneingriff befindende erste Zahnrad 23 auf die Längsachse der Vorrichtung übertragen. Fig. 2 shows a section of the door operating device 1, so that in particular the spring adjustment 15 is shown in detail. The spring adjustment 15 comprises a threaded spindle 17, which is screwed into the support sleeve 16 at the end. Thus, the threaded spindle 17 is fixed both in the axial direction and in the direction of rotation. About the dormant threaded spindle 17, the Federverstellmutter 18 is arranged, which extends into a Federverstellhülse 19 inside. The Federverstellhülse 19 is rotationally connected to a first gear 23 which is arranged axially fixed between the support sleeve 16 and the Federverstellhülse 19. The first gear 23 is toothed with a second gear 24, wherein the toothing according to the present embodiment comprises a bevel gear. Thus, a transmission of the rotational movement over an angle of 90 ° is possible, so that the second gear 24 is arranged relative to the first gear 23 at an angle of approximately 90 °. The second gear 24 is received in a gear receptacle 25 which is stationary and rotatably mounted in the housing 11. Will now be by means of a tool 26, which in the tool holder 27 can be inserted, a rotational movement in the tool holder 27 and thus introduced into the second gear 24, the rotational movement is transmitted via the toothed engagement located in the first gear 23 to the longitudinal axis of the device.

Aufgrund der verdrehfesten Verbindung zwischen dem ersten Zahnrad 23 und der Federverstellhülse 19 wird die Drehbewegung auf diese übertragen, wobei die Federverstellhülse 19 mit der Federverstellmutter 18 über einen Sechskant verdrehfest und axial beweglich miteinander verbunden sind. Somit wird die Drehbewegung ebenso auf die Federverstellmutter 18 übertragen, so dass diese auf dem Gewinde der Gewindespindel 17 entlang eine Axialbewegung ausführt. Wird nun mittels des Werkzeugs 26 die Drehbewegung in einer Richtung eingeleitet, so dass sich die Federverstellmutter 18 in Richtung der Druckfeder 13 bewegt, so wird die Vorspannung in der Druckfeder 13 erhöht. Damit erhöht sich zugleich das Kraftniveau auf den Kolben 20 (siehe Fig. 1), wobei über den Rollen-Nocken-Trieb das Drehmoment auf die Welle 22 erhöht wird. Zur Unterstützung des gesamten Kraftniveaus innerhalb des Federkraftspeichers 12 ist eine zweite Druckfeder 28 vorgesehen, welche sich innerhalb der Druckfeder 13 koaxial erstreckt. Die zweite Druckfeder 28 stützt sich auf der gehäusefesten Gewindespindel 17 ab, so dass diese von der Federverstellung 15 nicht beeinflusst wird.Due to the rotationally fixed connection between the first gear 23 and the Federverstellhülse 19, the rotational movement is transmitted to this, the Federverstellhülse 19 are connected to the Federverstellmutter 18 via a hexagonal rotation and axially movable with each other. Thus, the rotational movement is also transmitted to the Federverstellmutter 18 so that it performs on the thread of the threaded spindle 17 along an axial movement. If the rotational movement in one direction is then introduced by means of the tool 26, so that the spring adjusting nut 18 moves in the direction of the compression spring 13, the preload in the compression spring 13 is increased. This simultaneously increases the force level on the piston 20 (see Fig. 1 ), wherein the torque is increased to the shaft 22 via the roller cam drive. To support the entire force level within the spring force accumulator 12, a second compression spring 28 is provided, which extends coaxially within the compression spring 13. The second compression spring 28 is supported on the housing-fixed threaded spindle 17, so that it is not affected by the spring adjustment 15.

Fig. 3 und Fig. 4 zeigen die Ansicht der Federverstellung 15, wobei diese in Fig. 3 in einer montierten Ansicht geschnitten dargestellt ist und in Fig.4 als Explosionszeichnung im demontierten Zustand gezeigt ist. Die sich nicht drehenden, d. h. feststehenden Komponenten der Federverstellung 15 umfassen die Abstützhülse 16, die Gewindespindel 17, sowie eine endseitig in Richtung der Druckfeder angeordnete Anschlagscheibe 29, welche mittels einer Gegenmutter 30 an der Gewindespindel 17 angeordnet ist. Fig. 3 and Fig. 4 show the view of the spring adjustment 15, wherein these in Fig. 3 is shown cut in an assembled view and in Figure 4 is shown as an exploded view in the disassembled state. The non-rotating, ie fixed components of the spring adjustment 15 include the support sleeve 16, the threaded spindle 17, and an end arranged in the direction of the compression spring stop plate 29, which is arranged by means of a lock nut 30 on the threaded spindle 17.

Die sich drehenden Komponenten der Federverstellung 15 umfassen hingegen das zweite Zahnrad 24, welches in einer Zahnradaufnahme 25 aufgenommen ist, wobei die Zahnradaufnahme 25 die sich in dieser drehende Werkzeugaufnahme 27 aufnimmt, um das zweite Zahnrad 24 mittels eines Werkzeugs anzutreiben. Weiterhin umfassen die sich drehenden Komponenten das erste Zahnrad 23, welches verdrehfest mit der Federverstellhülse 19 verbunden ist. Diese weist einen Innensechskant auf, welcher mit dem Sechskant auf der Federverstellmutter 18 axial gefügt ist. Die Federverstellmutter 18 umfasst einen angeformten Federteller 31, auf welcher die Druckfeder 13 endseitig aufliegt.The rotating components of the spring adjustment 15, however, include the second gear 24, which is received in a gear receptacle 25, wherein the gear receptacle 25 receives in this rotating tool holder 27 to drive the second gear 24 by means of a tool. Furthermore, the rotating components include the first gear 23, which is rotationally connected to the Federverstellhülse 19. This has a hexagon socket, which is axially joined to the hexagon on the Federverstellmutter 18. The Federverstellmutter 18 includes an integrally formed spring plate 31, on which the compression spring 13 rests end side.

Die Abstützhülse 16 ist als Druckausgleichseinheit 32 ausgebildet, welche einen Zylinder 33 umfasst, in dem ein Kolben 34 axial geführt ist. Um eine Druckausgleichskammer 35 zu bilden, weist die Druckausgleichseinheit 32 weiterhin ein Verschlusselement 36 auf, welches eine Gewindebohrung aufweist, in die die Gewindespindel 17 außenseitig einschraubbar ist. Zwischen dem Kolben 34 und dem Verschlusselement 36 ist eine Druckfeder 37 angeordnet, welche im drucklosen Zustand des fluidischen Systems den Kolben 34 in eine Richtung bewegt, in der die Druckausgleichskammer 35 im Volumen vergrößert wird. Der Kolben 34 umfasst Dichtelemente 38, wobei diese gemäß dem vorliegenden Ausführungsbeispiel als Lippendichtungen ausgeführt sind und zweifach radial in der Mantelfläche des Kolbens 34 angeordnet sind. Bei einer Erhöhung des Druckes des hydraulischen Fluids auf der Außenseite der Druckausgleichskammer 35 wird der Kolben 34 in Richtung der Druckausgleichskammer 35 bewegt, so dass sich der Druck in der mit Luft gefüllten Druckausgleichskammer 35 erhöht, und sich das Volumen zugleich vermindert.The support sleeve 16 is designed as a pressure compensation unit 32, which comprises a cylinder 33 in which a piston 34 is axially guided. To form a pressure compensation chamber 35, the pressure compensation unit 32 further comprises a closure element 36 which has a threaded bore into which the threaded spindle 17 can be screwed on the outside. Between the piston 34 and the closure element 36, a compression spring 37 is arranged, which moves the piston 34 in the unpressurized state of the fluidic system in a direction in which the pressure compensation chamber 35 is increased in volume. The piston 34 comprises sealing elements 38, wherein these are designed according to the present embodiment as lip seals and are arranged twice radially in the lateral surface of the piston 34. With an increase in the pressure of the hydraulic fluid on the outside of the pressure compensation chamber 35, the piston 34 is moved in the direction of the pressure compensation chamber 35, so that the pressure in the air-filled pressure compensation chamber 35 increases, and at the same time reduces the volume.

Damit ist sichergestellt, dass sich der Druck im geschlossenen System des hydraulischen Fluids bei einer Temperaturerhöhung nicht übermäßig erhöht, da die Druckausgleichskammer 35 die Funktion eines Hydrospeichers erfüllt. Damit ist mit der Federverstellung 15 sowohl die Einstellung der Vorspannung der Druckfeder 13 möglich, als auch die Integration einer Druckausgleichseinheit 32 möglich. Somit sind zwei wesentliche Einheiten einer Türbetätigungsvorrichtung als bauliche Einheit derart ineinander integriert, dass diese als vormontierte Einheit bei der Montage der Vorrichtung vormontiert werden kann.This ensures that the pressure in the closed system of the hydraulic fluid does not increase excessively during a temperature increase, since the pressure compensation chamber 35 fulfills the function of a hydraulic accumulator. This is with the spring adjustment 15 both the setting the bias of the compression spring 13 possible, as well as the integration of a pressure compensation unit 32 possible. Thus, two essential units of a door actuator as a structural unit are integrated with each other in such a way that it can be pre-assembled as a preassembled unit during assembly of the device.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
TürbetätigungsvorrichtungDoor actuator
1010
Antriebseinheitdrive unit
1111
Gehäusecasing
1212
FederkraftspeicherStored energy
1313
Druckfedercompression spring
1414
elektrohydraulischer Antriebelectrohydraulic drive
1515
Federverstellungspring adjustment
1616
Abstützhülsesupport sleeve
1717
Gewindespindelscrew
1818
FederverstellmutterFederverstellmutter
1919
FederverstellhülseFederverstellhülse
2020
Kolbenpiston
2121
Kolbenpiston
2222
Wellewave
2323
erstes Zahnradfirst gear
2424
zweites Zahnradsecond gear
2525
Zahnradaufnahmegear receiving
2626
WerkzeugTool
2727
Werkzeugaufnahmetool holder
2828
zweite Druckfedersecond compression spring
2929
Anschlagscheibestop disc
3030
Gegenmutterlocknut
3131
Federtellerspring plate
3232
DruckausgleichseinheitPressure compensation unit
3333
Zylindercylinder
3434
Kolbenpiston
3535
DruckausgleichskammerPressure equalization chamber
3636
Verschlusselementclosure element
3737
Druckfedercompression spring
3838
Dichtelementsealing element

Claims (19)

  1. A door actuating device (1), in particular for a swing door, with a drive unit (10), which can be coupled to a door and is disposed in a housing (11), furthermore comprising a spring energy accumulator (12), which stores at least the energy required to execute the closing movement of the door and which has at least one compression spring (13) disposed under spring pre-tension, wherein the spring pre-tension of the compression spring (13) is adjustable by means of a spring adjusting device (15), wherein the spring adjusting device (15) comprises a stationary threaded spindle (17) disposed at a support sleeve (16), which is fixed to a housing, to which spindle a spring adjusting nut (18) with a female thread can be screwed and comprises a spring plate (31), on which the end side of the compression spring (13) is supported,
    characterized in that
    a rotational movement can be introduced into the spring adjusting nut (18) via a spring adjusting sleeve (19) of the spring adjusting device (15), and wherein the spring adjusting nut (18) is disposed to be axially movable in relation to the spring adjusting sleeve (19) and the rotational movement is transferable via a positive connection, wherein the spring adjusting sleeve (19) is disposed to be axially fixed and rotatable at the support sleeve (16) and/or at the threaded sleeve (17), and the threaded sleeve (17) extends axially through the spring adjusting sleeve (19), wherein the threaded sleeve (17) is stationary in both the longitudinal direction and the direction of rotation.
  2. The door actuating device (1) according to claim 1, characterized in that the positive connection between the spring adjusting nut (18) and the spring adjusting sleeve (19) comprises a uniform polygon contour in axial direction, which is configured inside the spring adjusting sleeve (19) and outside the spring adjusting nut (18), wherein the inside and the outside polygon contours are disposed to be fitted into one another, in order to allow for a rotationally fixed and axial movement in relation to each other.
  3. The door actuating device (1) according to one of the above mentioned claims, characterized in that a first toothed wheel (23) is connected to the spring adjusting sleeve (19) to be rotationally fixed, via which toothed wheel the rotational movement can be introduced into the spring adjusting sleeve (19).
  4. The door actuating device (1) according to claim 3, characterized in that the first toothed wheel (23) is in engagement with a second toothed wheel (24), wherein the planes of rotation of the toothed wheels (23, 24) comprise an angle of approximately 90° with regard to each other.
  5. The door actuating device (1) according to claim 4, characterized in that the first toothed wheel (23) and the second toothed wheel (24) are configured as bevel gear teeth.
  6. The door actuating device (1) according to claim 4, characterized in that the first toothed wheel (23) and the second toothed wheel (24) are configured as contrate gear teeth.
  7. The door actuating device (1) according to one of the claims 4 to 6, characterized in that the second toothed wheel (24) is rotatably supported in the housing (11) by means of a toothed wheel reception (25).
  8. The door actuating device (1) according to claim 7, characterized in that the toothed wheel reception (25) has a tool reception (27) in order to introduce the rotational movement into the teeth and therefore into the spring adjusting nut (18) by means of a tool (26) from the outside of the housing (11).
  9. The door actuating device (1) according to one of the above mentioned claims, characterized in that the threaded spindle (17) comprises a spring adjusting abutment, against which the spring adjusting nut (18) abuts during a screwing movement on the threaded spindle (17) in the direction of the compression spring (13) and which delimits the screwing movement.
  10. The door actuating device (1) according to claim 9, characterized in that the spring adjusting abutment comprises a stop washer (29), which is accommodated on the threaded spindle (17).
  11. The door actuating device (1) according to claim 10, characterized in that a counter-nut (30) is screwable to the end of the threaded spindle (17), in order to axially secure the stop washer (29).
  12. The door actuating device (1) according to claim 10 or 11, characterized in that the stop washer (29) has an axial play, wherein the axial play comprises approximately 0.1 mm to 1 mm, preferably approximately 0.3 mm to 0.8 mm, and particularly preferred approximately 0.4 mm to 0.5 mm.
  13. The door actuating device (1) according to claim 11, characterized in that the counter-nut (30) has a cylindrical section, which allows for centering a second compression spring (28), which is coaxially disposed in the compression spring (13).
  14. The door actuating device (1) according to claim 13, characterized in that the second compression spring (28) is supported axially at the stop washer (29).
  15. The door actuating device (1) according to one of the above mentioned claims, characterized in that the support sleeve (16) is configured as a pressure compensating unit (32).
  16. The door actuating device (1) according to claim 15, characterized in that the support sleeve (16) comprises a cylinder (33), in which a piston (34) is accommodated to be axially movable and furthermore has a closure element (36), in order to form a pressure compensating compartment (35).
  17. The door actuating device (1) according to claim 16, characterized in that a compression spring (37) is disposed between the piston (34) and the closure element (36).
  18. The door actuating device (1) according to claim 16 or 17, characterized in that the piston (34) is sealed dynamically at the inner wall of the cylinder (33) in a pressure tight manner by means of at least one sealing element (38).
  19. The door actuating device (1) according to one of the claims 16 to 18, characterized in that the spring adjusting device (15) is configured with the support sleeve (16), which is configured as a pressure compensating compartment (35), as a single pre-mountable unit, which is screwable into the housing (11) of the device via a thread.
EP07003391A 2006-03-17 2007-02-19 Door actuating device, in particular for a revolving door Active EP1835110B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006012757.9A DE102006012757B4 (en) 2006-03-17 2006-03-17 Door operating device, in particular for a revolving door

Publications (3)

Publication Number Publication Date
EP1835110A2 EP1835110A2 (en) 2007-09-19
EP1835110A3 EP1835110A3 (en) 2009-12-02
EP1835110B1 true EP1835110B1 (en) 2011-11-16

Family

ID=38169295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07003391A Active EP1835110B1 (en) 2006-03-17 2007-02-19 Door actuating device, in particular for a revolving door

Country Status (5)

Country Link
EP (1) EP1835110B1 (en)
AT (1) ATE533910T1 (en)
DE (1) DE102006012757B4 (en)
DK (1) DK1835110T3 (en)
ES (1) ES2376085T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008063885A1 (en) 2008-12-19 2010-07-01 Dorma Gmbh + Co. Kg door closers
CA2994675C (en) 2015-08-04 2024-04-09 Kyntec Corporation Mechanical spring actuator
PL3563022T3 (en) * 2016-12-27 2023-10-09 Locinox Hydraulically damped actuator and self-closing hinge comprising the actuator
DE102018202812A1 (en) * 2018-02-23 2019-08-29 Geze Gmbh Drive device for door leaves and thus equipped door assembly
US20220136309A1 (en) * 2020-10-29 2022-05-05 Magna Closures Inc. Counterbalance mechanism with movable plate

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535244C3 (en) * 1975-08-07 1985-01-24 Geze Gmbh, 7250 Leonberg Universal door closer
DE2819334A1 (en) * 1978-05-03 1979-11-08 Ver Baubeschlag Gretsch Co Door closing mechanism with preloaded spring - has worm and wheel reduction drive accessible for adjusting spring preload
DE3224300C2 (en) * 1982-06-29 1984-11-29 Geze Gmbh, 7250 Leonberg Door closer with adjustable closing force
GB2244759A (en) * 1990-05-17 1991-12-11 Jebron Ltd Door closing device
DE9209276U1 (en) * 1992-07-10 1992-08-27 Dorma Gmbh + Co. Kg, 5828 Ennepetal, De
DE4323151C5 (en) * 1993-07-10 2005-12-22 Geze Gmbh Swing door drive
DE19506220C2 (en) * 1995-02-22 1996-12-12 Dorma Gmbh & Co Kg Door closer
US20020066157A1 (en) * 2000-12-06 2002-06-06 Sha-Na Chen Door closer
DE102004041358B4 (en) * 2004-08-25 2006-07-13 Dorma Gmbh + Co. Kg Overhead closer
DE102004061629A1 (en) * 2004-12-17 2006-07-06 Dorma Gmbh + Co. Kg Swing door drive

Also Published As

Publication number Publication date
DE102006012757A1 (en) 2007-09-20
EP1835110A3 (en) 2009-12-02
ES2376085T3 (en) 2012-03-08
EP1835110A2 (en) 2007-09-19
ATE533910T1 (en) 2011-12-15
DE102006012757B4 (en) 2014-03-27
DK1835110T3 (en) 2012-03-05

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