EP3330473A1 - Système de porte tournante et procédé de compensation d'une force externe sur un battant de porte - Google Patents

Système de porte tournante et procédé de compensation d'une force externe sur un battant de porte Download PDF

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Publication number
EP3330473A1
EP3330473A1 EP16202037.4A EP16202037A EP3330473A1 EP 3330473 A1 EP3330473 A1 EP 3330473A1 EP 16202037 A EP16202037 A EP 16202037A EP 3330473 A1 EP3330473 A1 EP 3330473A1
Authority
EP
European Patent Office
Prior art keywords
door
turnstile
force
door leaf
rotor
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.)
Granted
Application number
EP16202037.4A
Other languages
German (de)
English (en)
Other versions
EP3330473B1 (fr
Inventor
Mike SCHÜLLER
Dennis Meiering
Wolfgang Semelka
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.)
Dormakaba Deutschland GmbH
Original Assignee
Dormakaba Deutschland GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dormakaba Deutschland GmbH filed Critical Dormakaba Deutschland GmbH
Priority to EP16202037.4A priority Critical patent/EP3330473B1/fr
Publication of EP3330473A1 publication Critical patent/EP3330473A1/fr
Application granted granted Critical
Publication of EP3330473B1 publication Critical patent/EP3330473B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/90—Revolving doors; Cages or housings therefor
    • 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
    • E05F15/608—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for revolving wings
    • 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
    • E05F15/71—Power-operated mechanisms for wings with automatic actuation responsive to temperature changes, rain, wind or noise
    • 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
    • E05Y2201/43—Motors
    • E05Y2201/434—Electromotors; Details thereof
    • 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
    • E05Y2400/334—Position control, detection or monitoring by using pulse generators
    • E05Y2400/336—Position control, detection or monitoring by using pulse generators of the angular type
    • 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

Definitions

  • the present invention relates to a revolving door assembly and a method for compensating a force acting externally on a door of a revolving door assembly.
  • the present invention relates to a reliable, rapid and accurate response to an undesirable external force effect.
  • revolving door assemblies which have an asynchronous motor with downstream transmission.
  • a multi-stage transmission eg worm gear, toothed belt stages
  • a multi-tooth shaft is used, which is firmly connected to the drive unit.
  • This drive system is first installed in the ceiling construction. Then the turnstile including the door wings is mounted.
  • a rear drive force is applied to the door leaf to return the door leaf to its original position after an external force action
  • arrangements known in the prior art have disadvantages in comfort.
  • the above object is achieved by a method for compensating a force acting externally on a door wing of a revolving door assembly.
  • the revolving door assembly comprises a turnstile carrying a door leaf.
  • two, three, four or more doors can be attached to the turnstile.
  • the door leaves can be arranged equidistantly (ie, spaced from one another by identical angular ranges).
  • An evaluation unit is provided and may take the form of a programmable processor, a microcontroller, an electronic control unit or the like. be designed.
  • An electric drive is provided for driving the turnstile and includes a stator and a rotor mounted on the turnstile.
  • the drive can be configured, for example, as an electronically commutated poly pole motor having a stator lamination stack and a plurality of coils and a rotor comprising a rotor lamination stack and a plurality of permanent magnets.
  • the rotor can be arranged coaxially with the axis of rotation and can be connected to the turnstile for direct, gearless drive.
  • An evaluation unit is set up to carry out logical steps for the operation of the revolving door arrangement.
  • the method which is carried out by means of the aforementioned revolving door arrangement, comprises at least the following steps: First, it is determined that a force acts externally on the door leaf in a desired holding position. The force can, for example, by a gust of wind, an animal, or the like.
  • the external force can also be applied by a user to the door leaf.
  • the external force is merely to be understood as meaning that it should not be yielded without resistance. Rather, the door should despite the impact the external force remain at the target holding position.
  • the external force can for example be detected by a force sensor or implicitly from a position deviation without a corresponding control of the drive.
  • the force can also be determined implicitly due to the fact that the turnstile or the door leaf experiences a positional deviation, while the drive (eg permanently or in response to a sensed positional deviation) exerts a holding force on the door leaf / turnstile.
  • the stator of the electric drive is driven by an electrical signal, by means of which the external force acting on the door force is compensated such that the door remains at its desired holding position or short-term and against the direction of rotation caused by the external force in the target Holding position returns.
  • the stator causes a force opposing the external force such that the desired holding position is resumed.
  • the electrical signal can be adjusted in terms of its voltage, in terms of its current, in terms of its amplitude and / or in terms of its frequency, for example, and optionally readjusted depending on the current rotational position of the turnstile / the door leaf.
  • the predetermined position can represent, for example, a closed position. If there is a force acting on the door in this position, eg due to wind, then the evaluation unit adjusts accordingly and holds the door in the predetermined position.
  • the electrical signal can be designed, for example, as a clocked DC voltage signal (also known as “pulse-width-modulated (PWM) signal").
  • PWM pulse-width-modulated
  • the pulse width or the duty cycle of the PWM signal can be used to provide the required parameters of the electrical signal (eg voltage, current, amplitude and frequency).
  • the electrical signal may have a substantially linear dependence on a deviation of a position of the door leaf from a desired holding position.
  • a P-controller or a PI controller can be used. If the external force doubles or the angle of rotation doubles (ie the deviation from the nominal holding position), the torque generated by the electric drive also doubles according to the P component.
  • the current and / or the voltage on the stator can be doubled accordingly.
  • the I component integrating controller, I element
  • a proportional-integral controller PI controller
  • position sensors can be used which, for example, have an encoder on the rotor and a slave on the stator of the electric drive.
  • Hall sensors can be arranged on the stator of the electric drive and detect the rotor magnetic field. Depending on the rotational position results in a magnetic signature of the rotor, from which the current rotational position of the rotor relative to the stator can be determined.
  • electrical parameters of the electrical signal can be selected, which is a suitable Return momentum result.
  • the set position when the electrical signal is applied, the set position may have been run over by the door leaf or the door leaf may have run over the setpoint position due to the external force.
  • the aforementioned scenario can be determined by means of the position sensors.
  • a parameter of the electrical signal may be reversed to return the turnstile / door leaf in an opposite direction of rotation to the desired holding position.
  • a further external force can press on the door leaf in an opposite direction of action in time following the external force previously discussed.
  • the parameter of the electrical signal which is reversed to reverse the force on the electric drive, may for example be a phase shift of the electrical signal.
  • a 180 ° phase shift of the electrical signal and / or a reverse running direction of a rotating field in the electric drive can be generated in order to reverse the direction of rotation.
  • the turnstile can be a predefined force be crossed, be exceeded, be passed. This can be determined, for example, by means of a force sensor and / or implicitly by means of the position sensor. For example, this can also be concluded from a rotation of the turnstile implied by a predefined angular range.
  • a position closest to the desired holding position of the turnstile with the corresponding door leaf position can be defined as a new desired holding position.
  • a rotation of the turnstile can be admitted by such a rotation angle range, which arranges the door opposite the direction of rotation at the former target holding position of the previously discussed door leaf.
  • a revolving door assembly having a turnstile supporting a door is proposed. It is also possible to arrange or arrange two, three, four, five, six or more door leaves at the turnstile.
  • An evaluation unit is provided (eg in the form of an electronic control unit, a programmable processor, a microcontroller or the like) to carry out the steps of a method according to the invention.
  • An electric drive with a stator and a rotor connecting the turnstile with the fixed part of the revolving door assembly.
  • the turnstile is rotatable about an axis of rotation, wherein along the axis of rotation an axial direction and perpendicular to the axial direction a radial direction are defined.
  • the revolving door assembly can according to the above Be designed versions.
  • the evaluation unit is set up to determine a desired holding position of the door leaf, to determine a force acting externally on the door leaf in the desired holding position and to control the stator with an electrical signal by means of which the force acting externally on the door leaf is compensated ,
  • the revolving door arrangement according to the invention is set up to realize the features, combinations of features and the advantages resulting from them in a corresponding manner, in such a way that, in order to avoid repetition, reference is made to the above statements.
  • the stator of the electric drive may be provided for fixed mounting.
  • it may be arranged to be fastened to a ceiling (eg a suspended ceiling and / or a concrete ceiling).
  • the stator may be arranged on the axis of the door cross in such a way that together with the rotor it forms an air gap arranged coaxially with the axis of the turnstile. In other words, preferably no transmission is provided between the drive and the turnstile. The result is a backlash-free kinematic relationship between the drive and the turnstile.
  • the revolving door assembly may further comprise a frequency converter, which preferably also has the evaluation unit and an output stage for controlling the electric drive.
  • the evaluation unit is set up to realize a parameter of an electrical signal for controlling the electric drive by means of a pulse width modulation.
  • the frequency converter is set up to control the output stage with a multi-phase representation of the electrical signal as a function of the pulse-width-modulated signal.
  • a power signal can be generated by means of the output stage, which energization of the drive in response to an output signal of the Evaluation unit allows.
  • the components required for operating the revolving door arrangement according to the invention can thus be matched to one another in the best possible way. Preferably, they can be arranged in a common housing.
  • the housing may include the frequency converter, the power amplifier and the evaluation unit.
  • the housing may have a (in particular common) connection for an operating voltage of the aforementioned components.
  • the drive can be supplied with electrical energy via the operating voltage.
  • the evaluation unit can be set up to determine a current speed, a current position and / or a current speed of the turnstile based on a position sensor in the electric drive.
  • the position sensor may have at least one, preferably two, in particular three or more Hall sensors.
  • the position sensor can also have an encoder on the rotor of the drive. It may also have a magnetic action (e.g., a permanent magnet in conjunction with a Hall sensor).
  • an absolute rotational position of the rotor / turnstile can be determined via the encoder.
  • the Hall sensors may in particular be arranged in the stator of the electric drive and be set up to generate a signal depending on an alternating magnetic field generated by means of the rotor, by means of which the positioning, the rotational speed and / or the actual speed of the rotor (and thus of the turnstile) to be determined.
  • the electric drive can be designed as a brushless motor. The result is a highly efficient electric drive and an exact positioning of the rotor by means of the method according to the invention.
  • Fig. 1 shows an isometric view of a revolving door assembly 1.
  • the revolving door assembly 1 comprises a turnstile 2.
  • This hub 2 has four door leaves 3.
  • the door leaves 3 are each angled at 90 ° to each other.
  • the turnstile 2 is arranged rotatably about a rotation axis 4.
  • the axis of rotation 4 extends in the axial direction 5.
  • a radial direction 6 Perpendicular to the axial direction 5, a radial direction 6 is defined.
  • a circumferential direction 7 is defined.
  • a drive 8 is arranged on the turnstile 2.
  • This drive 8 is designed as electronically commutated Dahlpolmotor.
  • the rotor 17 (s. Fig. 2 )
  • This drive 8 is connected coaxially to the axis of rotation 4 with the turnstile 2. This allows the drive 8 a direct and gearless drive the turnstile. 2
  • FIG. 1 further shows a solid arrow, which symbolizes an external, acting on a door leaf 3 force 30.
  • This can be compensated after recognition by means of the electric drive 8. If, for example, due to an external alternating force, an external force corresponding to the dashed arrow subsequently acts on the door leaf 3, this external force can also be compensated for by electronically varying a parameter of a signal used to power the electric drive 8. An electrical reversal of the supply voltage of the electric drive is not required.
  • Fig. 2 shows a section through the revolving door assembly 1. From the revolving door assembly 1, only the drive 8 is shown.
  • the drive 8 comprises a stator 10 and the rotor 17. Like Fig. 1 shows, the drive 8 is arranged above the turnstile 2. In this case, the rotor 17 is located between the turnstile 2 and the stator 10.
  • Fig. 2 shows a rotatably connected to the rotor 17 connecting element, designed as a multi-toothed shaft. About this connecting element, the turnstile 2 is rotatably connected to the rotor 17.
  • the stator 10 comprises a stator disk 12.
  • a stator laminated core 11 is arranged on the outer circumference of the stator disk 12.
  • the individual coils 13 of the stator 10 are stuck on this stator laminated core 11.
  • Each coil comprises a bobbin 14, for example made of plastic.
  • this bobbin 14 are the windings 15 of the single coil thirteenth
  • the rotor 17 comprises a rotor disk 43. This rotor disk 43 lies opposite the stator disk 12. Between the two discs 43, 12, the laminated stator core 11 is arranged with the coils 13. At the outer periphery of the rotor disk 43, a rotor core 18 is arranged. Radially within the rotor core 18, a plurality of permanent magnets 19 are arranged on the rotor core 18.
  • a thrust bearing 20 and a radial bearing 21 are formed between the stator 12 and the rotor disk 43.
  • the thrust bearing 20 and the radial bearing 21 are formed as sliding bearings.
  • a frequency converter 25 which has a connection 27 for an operating voltage.
  • an evaluation unit 9 a motor IC 36 (integrated circuit for drive control) and an output stage 26 for controlling the drive 8 are provided.
  • the evaluation unit 9, the motor IC 36 and the output stage 26 are used in conjunction with Fig. 5 discussed in more detail.
  • an input module 35 is arranged, by means of which different inputs can be accepted by a user and feedback can be output to the user.
  • the desired holding positions and maximum force effects which according to the invention can be compensated for without redefinition of the nominal holding position by means of the drive, can be defined. This can be done, for example, depending on the currently used hardware. A weakly sized electric drive is thus not overloaded, while the possibilities of a stronger electric drive can be better utilized.
  • the in Fig. 1 shown drive 8 is part of the revolving door assembly 1.
  • This revolving door assembly 1 is in section in Fig. 2 shown.
  • the revolving door assembly 1 includes, in addition to the drive 8, an adapter unit 101.
  • This adapter unit 101 is used for mounting the drive 8 to a superordinate ceiling construction 103.
  • the ceiling construction 103 comprises two parallel horizontal beams.
  • the adapter unit 101 comprises at least one ceiling mounting element 102. This is formed here as a right angle bent angle.
  • the ceiling fastening element 102 is fastened in the profiles of the ceiling construction 103 via a screw connection and corresponding sliding blocks.
  • the adapter unit 101 further comprises an adapter plate 107. With this adapter plate 107, the ceiling mounting member 102 is firmly connected, for example, welded.
  • a plurality of fixing elements 104 of the adapter unit 101 are attached. These fixing elements 104 each serve to secure a suspended ceiling element 105.
  • the adapter unit 101 further comprises at least one drive fastening element 106. This is designed here as a screw connection and serves for fastening the drive 8 to the adapter unit 101, in particular to the adapter plate 107.
  • Vorfixierüen 110 here include a snap hook. This makes it possible to lift the drive 8 from below to the adapter plate 107.
  • the Vorfixierüen 110 engage and the drive 8 is at the Adapter unit 110 prefixed. Then designed as screw driving fasteners 106 can be set.
  • connection recess 111 in the adapter plate 107.
  • an electrical contact in particular one or two connectors within the drive 8 accessible from above.
  • the drive 8 has position sensors 28 in the form of Hall sensors, which are arranged between the at the periphery of the stator.
  • the position sensors 28 are arranged to detect (not shown) position sensor on the (not shown) rotor and to report a rotational position of the drive 8 to the (not shown) evaluation unit.
  • Fig. 4 3 shows a flow chart illustrating steps of an exemplary embodiment of a method according to the invention for compensating a force acting externally on a door wing of a revolving door arrangement.
  • step S100 a target holding position of the door leaf or the turnstile of the revolving door assembly is determined. This can be done, for example, using Hall sensors in the stator of an electric drive of the revolving door arrangement, which are set up to detect a magnetic field of the rotor of the electric drive.
  • the force acting externally on the door leaf in the desired holding position is determined by a force sensor or implicitly from a positional deviation of the turnstile / door leaf.
  • step S300 the stator of the electric drive is driven with an electrical signal, by means of which the force acting externally on the door leaf force effect is compensated.
  • the force acting externally on the door leaf force effect is compensated.
  • the electrical signal can be continuously readjusted.
  • step S400 a parameter of the electrical signal to compensate for another external force (acting in an opposite direction) is reversed. For example, a direction of rotation of a rotating field can be reversed within the electric drive.
  • a case of abuse is determined in which, in step S500, such a high external force effect on the door leaf is sensory determined that the force action exceeds a predefined reference.
  • step S600 a position of the turnstile closest to the desired holding position with the corresponding door leaf position is defined as the new desired holding position.
  • a previously considered door leaf nearest door is arranged at the former target holding position. This results in a corresponding to the previous target holding position target holding position.
  • Fig. 5 shows a block diagram of an embodiment of a revolving door assembly according to the invention.
  • an operating voltage of 24V is connected to the electrical system.
  • a DC / DC converter 41 feeds a microcontroller as the evaluation unit 9 with a voltage of 5V or optionally 3.3V.
  • the operating voltage is applied via a diode 42 to a motor IC 36 and an output stage 26 for energizing the stator 10.
  • the motor voltage may, for example, lie in a predefined range.
  • the microcontroller may have further input variables (not shown).
  • the Hall sensors can be connected to the microcontroller for determining a rotational position of the drive.
  • the microcontroller provides pulse width modulated signals for controlling the output stage to the motor IC 36. These also have a level of 5V or 3.3V.
  • the pulse width modulated signals are used to control the three phases U, V, W of the stator 10 z. With 6 signals U_H, U_L,
  • V_H, V_L, W_H, W_L H - High, L - Low.
  • a control line 39 and an error reporting line 40 are provided between the microcontroller and the motor IC 36.
  • the motor IC 36 high / low signals with adjusted voltage levels GH_U, GL_U, GH_V, GL_V, GH_W, GL_W for driving the MOSFETs of the output stage 26 can be output.
  • the motor IC 36 is used for short-circuit prevention for the control of the output stage 26. In other words, it is avoided that arranged in a common bridge branch transistors of the output stage 26 are simultaneously turned on and the power amplifier thereby takes damage.
  • the control signals GH_U, GL_U, GH_V, GL_V, GH_W, GL_W are designed as pulse width modulated signals.
  • the respective high (H) signal substantially represents the respective level reversal of the low (L) signal for the phases U, V, W, with a dead time for avoiding the abovementioned short circuit between the edges of the signals.
  • the microcontroller, the motor IC 36 and the output stage 26 are shown as components of a frequency converter 25, the components of which can be arranged in a common housing.
  • the components of the frequency converter 25 may be arranged on a common board.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
EP16202037.4A 2016-12-02 2016-12-02 Système de porte tournante et procédé de compensation d'une force externe sur un battant de porte Active EP3330473B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16202037.4A EP3330473B1 (fr) 2016-12-02 2016-12-02 Système de porte tournante et procédé de compensation d'une force externe sur un battant de porte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16202037.4A EP3330473B1 (fr) 2016-12-02 2016-12-02 Système de porte tournante et procédé de compensation d'une force externe sur un battant de porte

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Publication Number Publication Date
EP3330473A1 true EP3330473A1 (fr) 2018-06-06
EP3330473B1 EP3330473B1 (fr) 2020-03-25

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5647173A (en) * 1994-02-02 1997-07-15 Dorma Gmbh + Co. Kg Operating method for the operation of a revolving door
EP3034759A1 (fr) * 2014-12-16 2016-06-22 DORMA Deutschland GmbH Procédé de commande d'une porte à tambour

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5647173A (en) * 1994-02-02 1997-07-15 Dorma Gmbh + Co. Kg Operating method for the operation of a revolving door
EP3034759A1 (fr) * 2014-12-16 2016-06-22 DORMA Deutschland GmbH Procédé de commande d'une porte à tambour

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