Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
  • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
  • E05F3/10—Closers 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
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
  • E05F1/002—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means
  • E05F1/004—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means by thermostats, rain, wind or noise
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
  • E05F1/002—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means
  • E05F1/006—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means by emergency conditions, e.g. fire
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
  • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
  • E05F3/10—Closers 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
  • E05F3/102—Closers 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 rack-and-pinion transmission between driving shaft and piston within the closer housing
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
  • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
  • E05Y2201/25—Mechanical means for force or torque adjustment therefor
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
  • E05Y2201/499—Spring tensioners; Tension sensors
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/60—Suspension or transmission members; Accessories therefor
  • E05Y2201/622—Suspension or transmission members elements
  • E05Y2201/696—Screw mechanisms
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
  • E05Y2400/10—Electronic control
  • E05Y2400/20—Electronic control of brakes, disengaging means, holders or stops
  • E05Y2400/202—Force or torque control
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
  • E05Y2400/10—Electronic control
  • E05Y2400/40—Control units therefor
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
  • E05Y2400/61—Power supply
  • E05Y2400/612—Batteries
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
  • E05Y2600/10—Adjustable
  • E05Y2600/13—Adjustable by motors, magnets, springs or weights
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2900/00—Application of doors, windows, wings or fittings thereof
  • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
  • E05Y2900/13—Type of wing
  • E05Y2900/132—Doors

Definitions

• the present invention relates to a door system comprising a door with a leaf, a door closer for automatically closing the leaf, a closing force adjustment device for automatically adjusting the closing force of the door closer, and a control device for the closing force adjustment device.
• Door closers often pose a hindrance for disabled, elderly, or young people, as they make it difficult to open a door. However, door closers are necessary to ensure that doors close securely and thus protect critical fire compartments.
• the door closers are typically set to a high closing force, even though this is rarely needed.
• the EP 1 340 877 A2 Describes a door drive with a motorized closing force adjustment.
• the movement of the door leaf is detected by a sensor, whose output signal is used to adjust the closing force.
• the CH 712 076 A2 Describes a locking device for a door.
• the opening force required to open the door can be adjusted during operation. If there is excess pressure in a room, e.g., in the event of a fire, the closing force is reduced so that people can still open the door safely.
• the invention solves the above-mentioned problems by a door closer according to claim 1.
• the specified air pressure load may have a value or range of values that corresponds to a standard air pressure load.
• the specified air pressure load may, in particular, be zero or a range around zero.
• the specified air pressure load can be specified, for example, as a range of values or as a maximum and/or minimum value.
• the specified air pressure load can, for example, be stored in the control unit by the manufacturer and/or can be specified subsequently, e.g., by a user or a service technician.
• the door closer can be operated as a normal door closer, and the closing force can be reduced or increased as needed, adapting it to the ambient conditions.
• this can also be referred to as adaptive closing force adjustment.
• the door system of the invention is particularly suitable for complying with standard specifications regarding opening force in stairwells with positive pressure ventilation systems.
• the adaptive closing force can also be adjusted depending on the weather conditions. This ensures barrier-free access during normal operation and secure closing in windy conditions.
• the closing force of the door closer can also be automatically adjusted during installation using the closing force adjustment device for the specified air pressure load or normal operation.
• the invention allows for a compact design of the door closer and a comparatively cost-effective construction.
• An air pressure load can generally be effective in either the opening or closing direction.
• the signal from the signaling device can, for example, additionally indicate whether the air pressure load is effective in the opening or closing direction.
• the signaling device can, for example, have a sensor for the air pressure load, which determines whether an air pressure load is applied to the sash that deviates from a predetermined air pressure load.
• the sensor can also be configured to determine whether the air pressure load is effective in the opening or closing direction.
• control device is configured to reduce the closing force of the door closer when an increased air pressure load is applied to the door leaf in the closing direction. This makes it easier to pass through the door in the event of an air pressure load.
• the door system includes a positive pressure ventilation system that exerts air pressure on the door leaf when activated, with the signal from the signaling device indicating whether the positive pressure ventilation system is activated or not. This can be easily ensured that Even with an active overpressure ventilation system, the door can be opened with only minimal force, in particular with an opening force that complies with standards.
• the signaling device can, for example, be a fire alarm system.
• a positive pressure ventilation system is activated as a result of a fire alarm.
• the fire alarm can therefore, for example, be used as a signal indicating whether the air pressure load on the sash deviates from the specified air pressure load.
• the positive pressure ventilation system itself can also issue a corresponding signal or form a signaling device.
• the control device can, in particular, be configured to reduce the closing force of the door closer when the positive pressure ventilation system is active.
• the positive pressure ventilation system generates an air pressure load on the leaf in its closing direction.
• the control device can alternatively be configured to increase the closing force of the door closer when the positive pressure ventilation system is active. This can ensure safe closing after passing through the door.
• a combination of these approaches is also possible, for example, if positive pressure ventilation systems can be controlled differently for different building sections.
• a positive pressure ventilation system creates positive pressure in the stairwell. This keeps the stairwell smoke-free. Escape doors on the upper and lower floors usually open into the stairwell, counteracting the positive pressure. The exit from the ground floor stairwell to the outside opens outward from the stairwell and closes against the positive pressure.
• the closing force is either increased or reduced. This can be configured in the control unit during commissioning.
• the system is designed for doors that open into the stairwell against air pressure in order to reduce the closing force to a minimum (EN3 according to EN1154) in the event of a fire.
• the door closer according to the invention can therefore be particularly advantageously installed in a stairwell with a positive pressure ventilation system for smoke-free operation.
• the door closer preferably has a drive unit that can be controlled by a control device.
• the drive unit is preferably connected to the door closer in such a way that it can influence, in particular reduce or increase, the opening or closing force of the door closer.
• the control device is preferably connected to a control center in the building in such a way that, for example, in the event of a fire, the control device receives a signal through which the control device instructs the drive unit to reduce the closing force of the door closer. This allows escaping persons to escape from the building through the stairwell without great effort.
• the signal from the signaling device indicates whether or not there is wind in the vicinity of the door system and/or the prevailing wind speed in the vicinity of the door system. If there is wind in the area of the leaf, this makes it easy to ensure that the leaf closes securely.
• the signaling device comprises a wind sensor.
• the wind sensor can be arranged, for example, directly at the door or on the outside of or on top of the building in which the door is located.
• the signaling device can be configured to obtain information from a remote device, for example, an internet server, regarding whether or not there is wind in the vicinity of the door system and/or the wind strength in the vicinity of the door system.
• a remote device for example, an internet server
• the information can be determined from online weather data.
• the signaling device can, for example, form a central device or be part of such a device. Alternatively, the signaling device can also be integrated into the door closer and/or the control device.
• the door system in particular the door closer, the control device, and/or the signaling device can preferably comprise a communication interface, in particular an internet connection.
• a communication interface in particular an internet connection.
• the signal from the signaling device, a signal from an air pressure sensor, a fire alarm signal, a wind signal, and/or weather data can be transmitted via the communication interface.
• control device is configured to increase the closing force of the door closer when there is wind or when the wind speed exceeds a predetermined value. This provides a simple way to ensure that the door closes securely. In light or no wind, however, a lower closing force can be set to enable the easiest, most barrier-free access possible.
• the closing force can also be adjusted depending on the direction of the air pressure load. For example, the closing force can be increased if the wind is in the opening direction and/or decreased if the wind is in the closing direction.
• the door closer comprises a closing spring, wherein the closing force adjustment device is configured to adjust the preload of the closing spring in order to adjust the closing force of the door closer.
• a closing force adjustment device can be constructed simply and compactly.
• the closing spring can be supported on a movable spring seat, wherein the preload of the spring can be adjusted by moving the spring seat.
• the spring seat can be designed, for example, as a spring plate.
• the spring seat can be mounted in a housing of the door closer in a manner that prevents rotation and/or allows axial movement.
• the closing force is adjustable via a spindle mechanism, in particular by moving a spring seat via a spindle mechanism.
• the spindle mechanism can convert a rotational movement of a spindle and/or a drive shaft into an axial movement of the spring seat.
• the spindle mechanism is provided with a trapezoidal thread. This allows for the absorption of particularly high forces and particularly high functional reliability.
• a spindle of the spindle mechanism can, for example, be hollow.
• Other components of the door closer can be accommodated in the hollow spindle.
• the spindle mechanism comprises an end stop, wherein the end stop is assigned to a zero or reference position in the control device, and wherein the control device is configured to detect when the end stop has been reached. This allows for simple calibration of the closing force adjustment device.
• Reaching the end stop can be monitored or determined, for example, via the motor current of an electric motor driving the spindle mechanism. As the spindle rotates in the direction in which the preload force decreases, the required motor current also decreases. On this basis, the current value of the preload can be determined, at least approximately. If the motor current increases suddenly when the spindle mechanism is moving, it can be deduced that the end stop or a zero or reference position has been reached. When the end stop or the zero or reference position is reached, the motor is preferably switched off. Alternatively or in addition to determining via the motor current, reaching the end stop and/or a zero or reference position can be determined using a sensor. Such a sensor can be designed, for example, as a reed switch, potentiometer, rotary encoder, or similar.
• the end stop can generally be provided at minimum preload or at maximum preload of a closing spring or, advantageously, an end stop can also be provided at minimum as well as at maximum preload.
• the end stop is preferably designed with minimal preload. This gives the motor sufficient reserves to easily overcome the release forces.
• a drive spindle of the spindle mechanism is supported by an axial-radial bearing. This allows the drive spindle to rotate with particularly low force and ensures high functional reliability.
• An axial-radial bearing can absorb high forces, is compact, and easy to install, which reduces assembly costs.
• the axial-radial bearing can, for example, be arranged on and/or in a component that closes a housing of the door closer. Such a component can form a bearing cover.
• the axial-radial bearing can, for example, be pre-assembled in a bearing cover that is fixedly arranged in the housing.
• the end stop for the spindle mechanism or the spring seat can advantageously be used as an axial bearing point for the axial-radial bearing. This advantageously ensures optimal power transmission to the spindle.
• the drive spindle can preferably be sealed from the environment by means of a sealing element between the spindle and the bearing cover.
• a drive spindle of the spindle mechanism is mounted by means of a bearing, wherein the bearing is arranged on and/or in a component, in particular a bearing cover, wherein the spindle is driven by means of a motor, wherein the motor is centered relative to the component by means of a centering device.
• the centering device can comprise a centering collar on the component.
• a recess corresponding to the centering collar can be provided on the motor, a gearbox or a further component provided between the motor and gearbox, in particular a gearbox holder.
• a reverse arrangement is also possible, i.e. a centering collar on the motor, gearbox or further component, in particular a gearbox holder, and a corresponding recess on the component, in particular the bearing cover.
• the closing force adjustment device is driven by an electric motor.
• the electric motor is a stepper motor with a planetary gear.
• the drive spindle can preferably be aligned concentrically to the drive shaft and/or gearbox output shaft. This allows for a compact design and can be easily implemented using a planetary gear. In particular, this allows for the motor to be as large as possible and the connection between the drive spindle and the drive or gearbox output shaft to be very compact.
• the drive spindle is preferably hollow towards the gearbox output shaft so that the drive spindle can accommodate the gearbox output shaft.
• the components can, for example, be positively connected to one another. This eliminates the need for an additional, space-consuming coupling element between the drive spindle and output shaft.
• the door closer comprises a drive unit that includes the electric motor and the control device.
• the drive unit can, for example, be flanged to a housing of the door closer.
• the signaling device can, for example, be configured to output the signal wirelessly and/or wired.
• control electronics can incorporate a Bluetooth, Wi-Fi, and/or network module, or similar, to enable control and/or networking via the building network or external devices.
• This allows for flexible execution of trigger commands, parameterization, and maintenance. For example, this can also eliminate the need to manually adjust the door closer's closing force. For example, the installer can simply enter the door size and weight in an app, whereupon the control electronics automatically adjust the appropriate closing force.
• a networked door closer can also be informed about external influences such as fire alarms, weather, wind, footfall, etc., and react accordingly. If a permissible wind limit is exceeded in the recorded online weather data, for example, all door closers in the building can be set to a higher closing force to ensure safe closing. In light winds, however, a lower closing force is preferred to enable the easiest, most accessible access possible.
• the signaling device can be controlled, for example, by a control center of the building or another unit remote from the door closer, such as a fire alarm system or a positive pressure ventilation system. It can also be integrated into the door closer.
• the control device of the closing force adjustment device can, for example, have its own power supply and/or be supplied with power via a control center of the building in which the door system is installed.
• One embodiment provides that the closing force adjustment device has a mains power connection for the power supply.
• a battery can be provided to power the closing force adjustment device. This ensures that the closing force adjustment device or the door closer can be operated safely and reliably, even in the event of a power failure.
• the battery can be provided, for example, in a control center or in the door closer, particularly in a drive unit. A battery in the door closer or drive unit can be optional.
• the closing force adjustment device is supplied with power via the building's power grid during normal operation, wherein the control device is designed to keep the battery at a safe charge level during mains operation.
• the battery voltage can be lower than the voltage of the electric motor of the closing force adjustment device.
• the battery advantageously has a low voltage of, for example, 3.7 V, which is lower than the motor voltage and, due to the small number of cells, enables a compact design.
• the voltage is converted to a motor voltage, preferably 24 V, for example, via a step-up converter, which can be arranged on the control electronics to save space. This results in a very compact design for the door closer.
• the door closer 10 comprises a housing 12 in which a mechanism of the door closer 10 is housed, described in more detail below.
• the door closer 10 also includes a closing force adjustment device, which includes an actuating unit 14 and a drive unit 16.
• the actuator unit 14 comprises a spring plate 18, a spindle 20, and a bearing cover 22.
• the bearing cover 22 is fixedly connected to the housing 12 during assembly.
• a bearing for the spindle 20, described in more detail below, is arranged in the bearing cover 22.
• the bearing cover 22 forms a cover for the housing 12.
• the drive unit 16 comprises a gear motor 24, which comprises a gearbox 26 and an electric motor 28.
• the electric motor 28 is designed as Stepper motor, with gear 26 being a planetary gear. This enables a particularly compact design.
• the drive unit 16 also includes a housing 30 for accommodating a battery 31 and a control device 32.
• the gear motor 24 is fixedly connected to a gear holder 33.
• the control device 32 processes input signals, controls the electric motor 28, and automatically adjusts the operating modes of the door closer 10.
• the control device 32 is configured to adjust the closing force of the door closer via the gear motor 24 and the actuating unit 14 as a function of a signal.
• the signal is output by a signaling device (not shown in detail) and indicates whether an air pressure load deviating from a predetermined air pressure load is present on a door leaf equipped with the door closer 10.
• the signaling device can preferably be a central device in the building and/or located remotely from the door closer 10. Alternatively, however, it is also possible for the signaling device to be arranged on the door closer 10 or even integrated into the door closer 10.
• Fig. 2 The door closer 10 is shown in a longitudinal section in its assembled state.
• the described structural units show, in particular, the interior of the housing 12.
• a spring 34 designed as a compression spring, which forms a closing spring of the door closer 10, thus applying the closing force for automatically closing the leaf.
• the spring 34 transmits the force to a piston 36 and, via a gear 38, to a closer shaft 40.
• the closer shaft 40 is coupled or can be coupled to a door leaf in a manner not shown.
• the spring 34 is supported on the spring plate 18.
• the spring plate 18 is part of the closing force adjustment device and can be moved by means of the drive unit 16 and the actuating unit 14. During normal operation, the spring plate 18 is preferably not moved, i.e., it is static. It forms a counterbearing for the spring 34, and the door closer 10 operates like a conventional door closer during normal operation.
• the spindle 20 is rotated and the spring plate 18, which is coupled to the spindle via a thread, is moved axially.
• the spring plate 18 is moved toward the piston 36 to increase the preload of the spring 34 and increase the closing force, or away from the piston 36 to decrease the preload of the spring 34 and decrease the closing force.
• the spring 34 of the door closer 10 rests, on the one hand, on the piston 36, which is displaced against the spring 34 by the gear 30 when the door leaf opens, thus storing energy for the closing process.
• the spring 34 rests on the spring plate 18 of the actuating unit 14.
• the preload of the spring 34 on the gear 30 varies, thus changing the closing force of the door closer 10.
• An air pressure load on the wing can be exerted, for example, by wind or by a positive pressure ventilation system.
• the signaling device (not shown) emits a corresponding signal.
• the door closer 10 in the case of strong winds against the closing movement of the leaf, the door closer 10 must have a high closing force in order to securely close the leaf.
• the preload of the spring 34 must be high for this purpose. Therefore, if, for example, an air pressure load is exerted due to winds against the closing direction of the leaf, occurs, the spring plate 18 is moved towards the piston 36 or in Fig. 2 moved to the left to increase the preload of the spring 34 and the closing force.
• the door closer In the case of strong winds opposing the opening movement of the leaf, the door closer should have a low opening force in order to be able to pass through the door without excessive force.
• the preload of the spring 34 must therefore be low.
• the spring plate 18 is moved away from the piston 36 or Fig. 2 moved to the right.
• Fig. 3 shows an enlarged view of a section of the Fig. 2 , in particular the actuating unit 14.
• an axial-radial bearing 42 is visible, which is arranged in the bearing cover 22 and held in position.
• the bearing cover 22 is fixedly connected to the housing 12.
• the axial-radial bearing 42 forms a bearing for the spindle 20.
• the spindle 20 comprises an end stop 44 for the Fig. 2 visible spring plate 18. When the spring plate 18 rests against the end stop 44, this can, for example, form a zero or reference position.
• the end stop 44 forms an axial bearing point for the axial-radial bearing 42.
• a sealing element 46 is provided between the spindle 20 and the bearing cap 22.
• Another sealing element 48 is provided between the bearing cap 22 and the housing 12. This reliably seals the housing 12.
• the spindle 20 has a recess 50 into which a drive shaft 52 of the geared motor 24 extends.
• the drive shaft 52 forms an output shaft of the gear 26.
• the drive shaft 52 is positively coupled to the spindle 20, here via a key 54, for transmitting a rotary motion.
• the gear motor 24 is firmly connected to the gear holder 33 via screws 56.
• the gear holder 33 is also firmly connected to the housing 12 via screws 58, as can be seen from Fig. 4 This also shows a longitudinal section, but the cutting plane is different from the Fig. 2 and 3 is rotated by 90° around the axis of the spindle 20.
• the gear motor 24 is centrally aligned with the bearing cover 22 via the gear holder 33.
• the bearing cover 22 has a centering collar 60.
• the gear holder 33 has a recess corresponding to the centering collar 60 and defined by an inner collar 62.
• the gear motor 26 also has a centering collar 64.
• the bearing cover 22 and the gear motor 26 are each inserted with their centering collars 60 and 64 into the recess of the gear holder 33, whereby the components are precisely centered relative to one another. This design enables particularly simple production and precise and compact positioning of the components relative to one another.
• a centering collar could be provided on one side of the gear holder 33 facing the bearing cover 22, and the bearing cover 22 could have a recess into which the centering collar of the gear holder 33 can engage. The same applies to the centering between the gear motor 24 and the gear holder 33.

Landscapes

• Business, Economics & Management (AREA)
• Emergency Management (AREA)
• Power-Operated Mechanisms For Wings (AREA)

Priority Applications (1)

Applications Claiming Priority (1)

Publications (2)

Family

ID=82547401

Family Applications (1)

Country Status (5)

Family Cites Families (4)

• 2021
  • 2021-07-05 DE DE102021207029.9A patent/DE102021207029A1/de active Pending
• 2022
  • 2022-07-01 PL PL22182598.7T patent/PL4116533T3/pl unknown
  • 2022-07-01 FI FIEP22182598.7T patent/FI4116533T3/fi active
  • 2022-07-01 EP EP22182598.7A patent/EP4116533B1/de active Active
  • 2022-07-01 RS RS20251255A patent/RS67514B1/sr unknown

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