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
  • E05F15/00—Power-operated mechanisms for wings
  • E05F15/60—Power-operated mechanisms for wings using electrical actuators
  • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
  • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
  • E05F15/63—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by swinging arms
• • 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
  • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
  • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
  • E05F1/1008—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring parallel with the pivot axis
  • E05F1/1016—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring parallel with the pivot axis with a canted-coil torsion spring
• • 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
  • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
  • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
  • E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
  • E05F1/105—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring
  • E05F1/1058—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring for counterbalancing
• • 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
  • E05F15/00—Power-operated mechanisms for wings
  • E05F15/70—Power-operated mechanisms for wings with automatic actuation
• • 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
  • E05F15/00—Power-operated mechanisms for wings
  • E05F15/70—Power-operated mechanisms for wings with automatic actuation
  • E05F15/72—Power-operated mechanisms for wings with automatic actuation responsive to 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
  • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
  • E05F3/224—Additional arrangements for closers, e.g. for holding the wing in opened or other position for assisting in opening the wing
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
  • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
  • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current
  • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power
  • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
  • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
  • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
• • 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
  • E05Y2400/30—Electronic control of motors
  • E05Y2400/302—Electronic control of motors during electric motor braking
• • 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
  • E05Y2400/32—Position control, detection or monitoring
• • 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
  • E05Y2400/32—Position control, detection or monitoring
  • E05Y2400/322—Position control, detection or monitoring by using absolute position sensors
  • E05Y2400/324—Switches
• • 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
  • E05Y2400/32—Position control, detection or monitoring
  • E05Y2400/35—Position control, detection or monitoring related to specific positions
  • E05Y2400/354—End positions
• • 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
  • E05Y2400/36—Speed control, detection or monitoring
• • 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

• Technical field Present invention relates to a door operator for a swing door operator, a swing door system and a method for operating a door operator for a swing door.
• Swing door operators with self-closing or self-opening functionality are commonly used today.
• the self-closing functionality may be provided with a counter-weight, spring or an hydraulic cylinder to allow the door to close or open without use of the motor of the door operator.
• the self-closing functionality is of particular importance in swing door operators which are to be approved for use in fire door system.
• Standards and regulations such as EN 1154 and EN 17372 sets requirements for the closing and opening movement of the swing door leaf.
• Standards and regulations concerns for example latch, back check and speed control.
• the inventor has identified the need for providing a controllable self-closing functionality which does not require a hydraulic system and is operable when the operator operates in a passive mode.
• a door operator for a swing door system is configured to operate a door leaf of the swing door system between at least a first position and a second position in a trajectory of the door leaf.
• the door operator is further configured to operate in a powered mode and in a manual mode.
• the door operator comprises a brushed DC motor arranged to operate the door leaf between the at least first position and the second position in the powered mode.
• the door operator comprises a drive unit arranged to operate the door leaf between the at least first position and the second position in the manual mode. Further, the door operator comprises controlling circuitry comprising a first switch operably connected to the drive unit, wherein the first switch is configured to switch between a first speed control and a second speed control in the operation of the door leaf in the manual mode when an angle of the door leaf exceeds or becomes less than a corresponding threshold angle for the first switch.
• the first speed control and the second speed control are operatively connected to a respective semiconductor diode configured to provide a corresponding voltage for controlling the operation of the door leaf.
• a swing door system comprising a door leaf and a door operator according to the above.
• a method for operating a door operator according to the above comprises the steps being performed by controlling circuitry in the door operator of: determining a manual mode in the door operator, disconnecting the brushed DC-motor from operating the door operator, connecting the drive unit for operating the door operator, sensing the angle of the door leaf, switching to respective control based on the sensed angle of the door leaf, and controlling a speed of the door leaf based on the switched speed control.
• Figure 1 depicts a swing door system according to an embodiment.
• Figure 2 depicts a door operator according to an embodiment.
• Figure 3 depicts circuitry of an embodiment of the door operator.
• Figure 4 depicts aspects of a swing door system according to an embodiment.
• a swing door system 1 with a door operator 30 according to the invention is depicted.
• the swing door system 1 comprises the door leaf 10 and the door operator 30.
• the door leaf 10 has a first door leaf surface 12 and an opposing second door leaf surface
• the swing door 10 is pivotally supported at a vertical door edge 14, also known as a secondary closing edge, by hinges 16 for allowing opening of the door leaf 10 from a closed position to an open position, as well as for allowing closing of the door leaf 10 from the open position to the closed position.
• the door leaf 10 is hence supported by a door frame 11 for pivotal motion around a rotational axis 18 which is coincident with the hinges 16.
• the door operator 30 is a motorized automatic door operator 30 capable of causing opening and/or closing of the swing door 10 in an automatic mode, i.e. powered mode of the door operator 30.
• door operator 30 may also be capable of operating in a manual mode.
• a motor of the door operator 30 may not provide any driving torque to the door leaf.
• the manual mode may be a non-powered mode.
• the door operator 30 is configured to operate the door leaf 10 of the swing door system 1 between a first position and a second position in a trajectory of the door leaf 10.
• the door operator 30 is configured to operate in a powered mode and in a manual mode.
• a linkage mechanism 20 connects the automatic door operator
• the door operator 30 may be arranged in conjunction with the door frame 11, typically as a concealed overhead installation in or at the door frame 11.
• the powered mode may be triggered by sensor equipment in the swing door system, such as, for instance, a door-open push button 15, radar or a sensor such as an IR motion detector.
• the automatic door operator 30 may provide automatic opening of the door leaf 10 in various possible applications. Such applications includes, for instance, facilitating a disabled person’s access to his or her private home, providing access through entrance ports or internal doors at healthcare buildings, office premises, industries or retail stores, providing comfort access to hotel rooms, etc.
• the door operator 30 may also be used in fire door applications. Since entrance systems with automatic door operators are typically used in public areas, user safety is crucial.
• the automatic door operator 30 comprises a brushed dc motor 34.
• the brushed DC motor 34 is arranged to operate the door leaf between the at least first position and the at least second position.
• the brushed DC motor 34 is connected to a transmission 35.
• An output shaft 35a of the transmission 35 rotates upon activation of the brushed dc motor 34 and is connected to the linkage mechanism 20.
• the linkage mechanism 20 translates the motion of the output shaft 35a into an opening or closing motion of the door leaf 10 with respect to the door frame 11.
• the automatic door operator 30 may furthermore comprise a drive unit 36.
• the drive unit 36 is arranged to operate the door leaf 10 between the at least first position and the second position in the manual mode.
• the manual mode may be considered a mode in which the brushed dc motor
• the drive unit 36 may be arranged to store mechanical energy from the door leaf 10 between the at least one first and second position in the powered mode.
• the drive unit 36 may be a forced close arrangement or forced open arrangement which is adapted to provide mechanical energy via a transfer mechanism to the linkage 20, so as to cause forced closing or opening of the door leaf 10 with respect to the door frame 11.
• the forced close or open arrangement 36 may, for instance, comprise a helical spring.
• the helical spring may be arranged to urge movement of the door leaf 10 between the first and second open position.
• a forced close arrangement it may comprise a helical compression spring.
• the compression spring will be tensioned by the rotation of the output shaft 35a.
• the transfer mechanism for instance in the form of a pressure roller that acts on a cam curve being connected to the output shaft 35a.
• the torsion spring In the case of a forced open arrangement, it may comprise a helical torsion spring. During closing of the door leaf 10, the torsion spring will be tensioned by rotation of the output shaft 25a.
• the transfer mechanism for instance in the form of a pressure roller that acts on a cam curve being connected to the output shaft 35a.
• the manual mode may be initiated in response to said fire alarm.
• the manual mode activates the forced closed arrangement urging the door leaf 10 to move to the closed position.
• the door operator is configured to receive a fire alarm signal. In response to the fire alarm signal the door operator may be configured to switch to the manual mode.
• the drive unit may for example be a spring according to the above or a counter-weight arrangement.
• the automatic door operator 30 also comprises a control arrangement 20 which is configured for controlling the automatic door operator 30 to perform different functions thereof.
• the control arrangement 20 comprises a controller 31.
• the control arrangement may comprise a plurality of sensor functions for monitoring respective zones at the entrance system 10 for presence of a person or object.
• the sensor functions as well as other sensor equipment in the entrance system 1 like the door-open push button 15, are operatively connected with the controller 31 to report detection results to the controller 31.
• the controller 31 may be implemented in any known controller technology, including but not limited to microcontroller, processor (e.g. PLC, CPU, DSP), FPGA, ASIC or any other suitable digital and/or analog circuitry capable of performing the intended functionality.
• processor e.g. PLC, CPU, DSP
• FPGA field-programmable gate array
• ASIC application-specific integrated circuit
• the controller 31 has an associated memory 32.
• the memory 32 may be implemented in any known memory technology, including but not limited to E(E)PROM, S(D)RAM or flash memory. In some embodiments, the memory 32 may be integrated with or internal to the controller 31.
• the memory 32 may store program instructions for execution by the controller 31, as well as temporary and permanent data used by the controller 31, as can be seen at 32a in Figure 2
• One or more of the functions of the automatic door operator 30 relates to the opening 2 of the swing door 10 with respect to the door frame 11. Accordingly, the controller 31 of the control arrangement 20 has a control output 3 la connected to the motor 34 for controlling the actuation thereof.
• the door operator 30 may comprise a position sensor 33.
• the position sensor 33 may be operatively connected to a control circuitry which will be described with reference to Figure 4.
• the position sensor 33 is configured to sense an angle of the door leaf 10.
• the position sensor 33 may be a revolution counter 33, such as an encoder or other angular sensor, is provided at the brushed dc motor 34 to monitor the revolution of a motor shaft of the motor 34.
• the revolution counter is connected to an input 31b of the controller 31.
• the controller 31 is configured to use one or more readings of the revolution counter
• the controller 31 has an associated memory 32.
• the memory 32 may be implemented in any known memory technology, including but not limited to E(E)PROM, S(D)RAM or flash memory. In some embodiment, the memory 32 may be integrated with or internal to the controller 31.
• the memory 32 may store program instruction for execution by the controller 31, as well as temporary and permanent data used by the controller 31.
• the door operator 30 may be intended for fire door applications.
• the second embodiment of the automatic door operator 30 comprises a controller 31, memory 32, revolution counter 33, motor 34 and transmission 35.
• the door operator 30 comprises a drive unit 36 which may be adapted to provide mechanical energy via a transfer mechanism 37 to the linkage 20, so as to cause forced closing of the door leaf 14 with respect to the door frame 12 in the event of a fire alarm.
• the forced close arrangement 36 comprises a helical compression spring.
• the compression spring is tensioned by the rotation of the output shaft 35 a.
• the transfer mechanism 37 which in the disclosed embodiment includes a pressure roller that acts on a cam curve being connected to the output shaft 35a.
• the forced close arrangement 36 may comprise a different kind of spring, and the transfer mechanism 37 may comprise a different kind of mechanism.
• the controller 31 may receive an external fire alarm signal via a control input 3 Id and generate a control signal 36a to the forced close arrangement 36, so as to cause release of the accumulated spring force.
• Figure 3 discloses the circuitry of an embodiment of the door operator according to the invention.
• the door operator is configured to operate the door leaf of the swing door system between at least a first position and a second position in the trajectory of the door leaf.
• the door operator is further configured to operate in the powered mode and the manual mode.
• the door operator comprises the brushed DC motor 34.
• the brushed DC-motor 34 is arranged to operate the door leaf between the at least first position and the second position in the manual mode.
• the brushed DC motor 34 is a permanent magnet DC motor.
• the powered mode may comprise a mode wherein voltage is supplied to the brushed DC motor 34.
• the manual mode comprises a mode wherein voltage supply to the brushed DC motor 43 is temporarily or permanently stopped.
• the door operator comprises the drive unit. The drive unit is arranged to operate the door leaf between the at least first position and second position in the manual mode.
• the door operator 30 comprises controlling circuitry 100.
• the controlling circuitry comprises a first switch 140.
• the switch 140 is configured to switch between a first speed control and a second speed control in the operation of the door leaf 10 in the manual mode.
• the switch 140 is configured to switch when an angle of the door leaf exceeds or becomes less than a corresponding threshold angle for said first switch 140.
• the first and second speed control are operatively connected to a respective semiconductor diode 161, 162.
• the first speed control is operatively connected to a respective semiconductor diode 161 and the second speed control is operatively connected to a respective semiconductor diode 162.
• the respective semiconductor diodes 161, 162 is configured to provide a corresponding voltage for controlling the operation of the door leaf.
• the semiconductor diodes allows for shorting of the circuit over the semiconductor diodes 161, 162, whereby the speed of the door is controlled by means of the generator function of the brushed dc motor 34.
• the semiconductor diodes allows for passing of a certain current before the resistance is provided.
• the motor must reach a certain speed (rpm) before the diodes provides resistance.
• the door may be operated by hand in the manual mode without becoming heavy and slow to move.
• a greater resistance may be achieved at higher motor speeds, thus increasing the reliability of the speed control.
• the controlling circuitry 100 may further comprise a second switch 130.
• the second switch 130 is operably connected to the drive unit.
• the second switch 130 is configured to switch to a third speed control in the operation of the door leaf in the manual mode when an angle of the door leaf exceeds or becomes less than a corresponding threshold for the second switch 130.
• the second switch allows for additional control of the speed of the door leaf 10 in the manual mode.
• the corresponding threshold of first and second switch may be different.
• the corresponding thresholds are in the form of angle values of the door leaf.
• the operation of the door leaf in the manual mode comprises moving the door leaf at a controlled speed according to any of the first, second and third speed control.
• the speed of the door leaf may be adjusted based on the corresponding thresholds of the switches.
• the switches 130, 140 may be any one of a solid state switch such as hall elements or a mechanical switch.
• the switches are mechanical switches since it allows for reliable switching even in a state where no current is provided to the switches.
• the mechanical switches may be micro switches.
• the first switch 140 may be any one of a solid state switch such as a Hall element, a mechanical switch and a micro switch.
• the second switch 130 may be any one of a solid state switch such as a Hall element, a mechanical switch and a micro switch.
• the switches 130, 140 may be mechanical switches. This allows for the switches being operable even if the manual mode is a powerless mode.
• one or both of the switches may be mounted to a cam disc arranged to move in response to the movement of the door leaf 10.
• the switches may be mounted to the cam disc such that the switches activates at the corresponding thresholds.
• one or both the switches may be provided with Hall elements be arranged in a piston arrangement coupled to the linkage system.
• the door operator may comprise an operational mode switch 120 operatively connected to the brushed dc motor 34 and a power supply of the door operator.
• the operational mode switch 120 is operatively connected to the controller (depicted in Figure 2).
• the operational switch 120 is configured to selectively cut of the current provided to the brushed dc motor 34 from the power supply of the door operator, thereby causing switching between the manual mode and the powered mode. In the manual mode, current is only provided by means of the brushless motor 34 functioning as a generator.
• the controller is configured to in response to receiving a fire alarm signal activate the switch to cause switching from the powered mode to the manual mode.
• the respective semiconductor diode 161, 162 is configured to provide the corresponding voltage is comprised in a group of semiconductor diodes 160.
• each semiconductor diode 161, 162 is configured to provide a differing voltage from the other semiconductor diodes in the group of semiconductor diodes 160.
• each semiconductor diode may be configured to provide a voltage, each voltage being different.
• the differing voltages in the group of semiconductor diodes 160 enable differing speeds in the operation of the door leaf in the manual mode.
• the group of semiconductor diodes 160 may be connected in series.
• the group of semiconductor diodes 160 is configured to provide a drop in voltage.
• the semiconductor diodes may comprise Schottky diodes and/or P-N diodes.
• the group of semiconductor diodes 160 may include Schottky diodes and/or P-N diodes.
• the group of semiconductor diodes 160 preferably constitutes Schottky diodes and/or P-N diodes.
• the properties of the diodes are directly associated with the ability of the diode to discharge the heat generated by the current and the voltage drop generated over the diode.
• Schottky diodes have a forward voltage drop of about 0,2 Volt while P-N diodes have a forward voltage drop of about 0,6 Volt. Schottky diodes are thus preferable in terms of temperature management.
• Schottky diodes has the disadvantage of a low reverse breakdown voltage and a high reverse leakage current. The choice between Schottky and P-N diodes may be determined by how long the motor current passes through the diode and at what speed the door moves.
• the semiconductor diodes comprises a combination of Schottky and P-N diodes in order to achieve sufficient temperature management as well as sufficiently high reverse breakdown voltage and low reverse leakage current.
• the switches may be electrical or mechanical switches.
• the door operator 30 comprises the position sensor 33 (previously described with reference to Figure 2) operatively connected to the control circuitry 100.
• the position sensor 33 may be configured to sense an angle a of the door leaf 10.
• the above described speed controls may include a first, second and third speed control.
• the first and second position may correspond to the door leaf 10 being in a closed position C and the first position corresponds to the door leaf 10 being in an opened position O.
• the speed controls may be a main speed control, a back check control or a latch control.
• a conventional speed control sets the general speed for movement of the door leaf 10, while back check and latch control is controlled of the speed of the door leaf in certain intervals of the trajectory.
• Back check control involves a lowering of the speed of the door leaf 10 as the door leaf 10 approaches the opened position as the door leaf 10 moves from closed position towards said opened position.
• the back check control increases the safety of the swing door system due to the risk for collision during opening of the door is reduced.
• Latch control involves an increase of the speed of the door leaf 10 as the door leaf 10 approaches the closed position as the door leaf 10 moves from the opened position towards said closed position. This allows for a firm closure of the door leaf and mitigates the risk for the door leaf not engaging the door frame properly in the closed position.
• the intended latch control and/or back check control may be achieved also in the manual mode without having to add complex hydraulic or transmission system.
• the drive unit of the door operator may be arranged to move the door leaf 10 from the closed position to the opened position or from the opened position to the closed position.
• the second speed control may be a latch control.
• the first switch 140 may be configured to switch between the first speed control and the latch control in operation of the door leaf 10 in the manual mode when the angle of the door leaf 10 exceeds the corresponding threshold angle for the first switch 140.
• the third speed control may be a back check control.
• the second switch 130 may be configured to switch between the first speed control and the back check control in the operation of the door leaf 10 in the manual mode when the angle of the door leaf 10 exceeds the corresponding threshold for the second switch 130.
• the second speed control may be back check control.
• the first switch 140 may be configured to switch between the first speed control to the back check control in operation of the door leaf 10 in the manual mode when the angle of the door leaf 10 exceeds the corresponding threshold angle for the first switch 140.
• the third speed control may be a latch check control.
• the second switch 130 may be configured to switch between the first speed control and the latch check control in the operation of the door leaf 10 in the manual mode when the angle of the door leaf 10 exceeds a corresponding threshold for the second switch 130.
• Figure 3 depicts an example of the door operator according to the invention in which the second speed control is a latch control and the third speed control is a back check control. It may be envisioned however that the second speed control may be a back check control and the third speed control may be a latch control.
• the first switch 140 is connected to the semiconductor diodes by means of a first and second speed control circuit 151, 152.
• the first speed control circuit 151 and the second speed control circuit 152 each connects the brushless motor 34 to the controlling circuitry 100.
• the first switch 140 is configured to switch between said first control circuit 151 and the second speed control circuit 152.
• the first and second speed control circuit may be in the form of a first and second circuit leg each connected to the first switch 140.
• the switching between the first and second speed control thus involves switching between the first and second speed control circuit 151, 152, each speed control circuit comprising the respective semiconductor diode 161, 162 configured to provide the corresponding voltage for controlling the operation of the door leaf 10.
• the first and second speed control is operatively connected to a group of semiconductor diodes 160.
• the semiconductor diodes are configured to provide a differing voltage by means of being connected in series.
• the control circuitry 100 comprise a plurality of connections 169 such as plug socket connections, plinths etc. each connection being connected to one of the semiconductor diodes 161, 162. This allows for adaptation by means of adapting the speed by means of connecting the first and second speed control circuit to a connection with a corresponding semiconductor diode.
• the group of semiconductor diodes 161, 162 are connected in series and a connection 169 is provided between each semiconductor diode.
• One of the semiconductor diodes is connected to the first speed control circuit 151 and one of the semiconductor diodes is connected to the second speed control circuit.
• the first speed control circuit 151 is arranged to lead current through a first portion of the group of semiconductor diodes and the second speed control circuit 152 is arranged to lead current through a second portion of the group of semiconductor diodes.
• the semiconductor diodes used for the first and second speed control are Schottky diodes, which have a lower forward voltage drop compared to P-N diodes making them more suitable for speeding up the door (latch control).
• the controlling circuitry 100 further comprises the second switch 140, which is operably connected to the drive unit 36.
• the second switch 130 is configured to switch to the third speed control in the operation of the door leaf in the manual mode when the angle of the door leaf exceeds or becomes less than a corresponding threshold for the second switch 130.
• the third speed control is operatively connected to a respective semiconductor diode 194.
• the second switch 130 is thus configured to selectively switch to a third speed control circuit 153, the third speed control circuit 130 connecting the brushless motor 34 and the second switch 130.
• the third speed control circuit comprises the semiconductor diode 194.
• the second switch 130 allows for current passing through the third speed control circuit to the brushless motor 34.
• the semiconductor diode used for the third speed control is a P-N diode which has a higher forward voltage drop compared to Schottky diodes, making it more suitable for braking the door (back check control).
• a swing door system comprising a door leaf 10 and a door operator according to any one of the previously described embodiments of the door operator.
• a method for operating a door operator 30 for a swing door system 1 comprises steps being performed by controlling circuitry 100 in the door operator 30 of: determining the manual mode in the door operator 30, disconnecting the brushed DC motor (34) from operating the door operator 30, switching to respective speed control based on the angle of the door leaf 10, and controlling the speed of the door leaf 10 based on the switched speed control.
• the method further comprises the steps of connecting the drive unit 36 for operating the door operator 30, sensing the angle of the door leaf 10 and switching to respective control based on the sensed angle of the door leaf 10.
• the latch control generates an accelerated speed in the operation of the at least one door leaf 10 so that the at least one door leaf 10 firmly completes the trajectory in an interval of angle comprising the second position during a set time interval.
• the first speed control generates a constant speed in the operation of the door leaf 10 such that the door leaf 10 follows the trajectory at the constant speed during a time interval or angular interval of the door leaf 10.
• the back check control comprises a decelerated speed such that the door leaf 10 completes the trajectory in a lowered speed in an interval of angle comprising the first position during a set time interval or angular interval of the door leaf 10.

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• 2022
  • 2022-06-16 WO PCT/EP2022/066479 patent/WO2023280545A1/en not_active Ceased
  • 2022-06-16 EP EP22737420.4A patent/EP4367355A1/de active Pending

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