EP0363618B1 - Tourniquet - Google Patents

Tourniquet Download PDF

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Publication number
EP0363618B1
EP0363618B1 EP89115790A EP89115790A EP0363618B1 EP 0363618 B1 EP0363618 B1 EP 0363618B1 EP 89115790 A EP89115790 A EP 89115790A EP 89115790 A EP89115790 A EP 89115790A EP 0363618 B1 EP0363618 B1 EP 0363618B1
Authority
EP
European Patent Office
Prior art keywords
turnstile
accordance
shaft
braking device
passage
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.)
Expired - Lifetime
Application number
EP89115790A
Other languages
German (de)
English (en)
Other versions
EP0363618A1 (fr
Inventor
Axel Bäthge
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.)
Malkmus-Dornemann Carola Dr
Original Assignee
Malkmus-Dornemann Carola Dr
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 Malkmus-Dornemann Carola Dr filed Critical Malkmus-Dornemann Carola Dr
Publication of EP0363618A1 publication Critical patent/EP0363618A1/fr
Application granted granted Critical
Publication of EP0363618B1 publication Critical patent/EP0363618B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E06B11/00—Means for allowing passage through fences, barriers or the like, e.g. stiles
    • E06B11/08—Turnstiles; Gates for control of entry or exit of persons, e.g. in supermarkets

Definitions

  • the invention relates to a turnstile, the shaft of which can be locked against rotation in one direction by means of a controllable locking device, with a braking device which acts directly or indirectly on the turnstile shaft and can be actuated via an electrical signal.
  • Turnstiles of various types are known. They are used, for example, in security gates and have several locking arms or locking brackets arranged at equal angular intervals around the axis of rotation.
  • the axes of rotation of the turnstiles are generally either perpendicular or inclined downward by approximately 45 °.
  • the turnstiles should often only allow passage in one direction, especially if rooms are only to be entered through an entrance and exited again through an exit.
  • the turnstile has a controllable locking device which, in the event of disasters and the like, can also open the passage in both directions and without obstructing the people passing through.
  • latch and locking mechanisms wear out over time and require regular maintenance and security checks. This applies in particular if accidental or improper operating errors occur relatively frequently. In addition, they lead to an extraordinarily massive, space-consuming construction, which also leads to a large overall height of the turnstiles.
  • Such a path-dependent solution means that the turnstile shaft can be rotated more or less as long as certain limit values are not exceeded.
  • the contact disc must be precisely matched to the future turnstile in order to prevent misuse as far as possible.
  • the object of the invention is to propose a turnstile of the type mentioned in the introduction, which is safer against misuse without the need for space-consuming components.
  • turnstile which is characterized by the signal output device which, when there is a movement pulse in the respective blocking direction, outputs an electrical signal to the turnstile which directly or indirectly actuates the braking device.
  • the movement device which acts on the turnstile actuates the braking device and prevents any rotation of the turnstile. All components are space-saving.
  • the signaling device does not require any components that tend to fatigue, but brakes are relatively easy to maintain. Your components can be replaced regularly, while material fatigue is difficult to detect in jacks and the like in conventional systems.
  • An incremental angle encoder is particularly preferably used in the signal output device. It generates pulses in direct dependence on the rotation of the shaft to which it is assigned. Even with minimal Angular rotations, in other words practically the very first attempt to turn the turnstile in the blocked direction, are given a corresponding signal by the signal output device.
  • This signal is advantageously picked up by a control device, which is also inputted by an external command transmitter with information about which of the directions of rotation is the blocking direction and which is the passage direction.
  • a control device uses such a control device, the direction of rotation of the turnstile can be changed at any time if required.
  • an electronic circuit processes the incoming signals and actuates the braking device depending on the data supplied to it.
  • the braking device preferably remains actuated for a predetermined period of time after braking the turnstile on the basis of the signal caused by the improper rotation. This means that prevents that by turning the turnstile repeatedly in the blocking direction it is possible to cross the turnstile in this undesired direction. Secondly, it is easier to determine and determine the cause of repeated failed attempts.
  • turnstile shaft is connected to the shaft of a drive with reversible direction of rotation, a largely uniform angular movement of the turnstile from one locked position to the next as well as a secure transfer of the turnstile into the following position can be ensured.
  • the drive also makes it possible to make the turnstiles themselves very solid.
  • the braking device acts on the drive shaft in order to avoid loading the transmission between the two shafts.
  • It is preferably driven by an electric motor that is operated with a fraction of its nominal power (approximately 1/10 of its nominal power). This prevents people in the turnstile from being pushed through the turnstile arms if they move too slowly (for example due to a disability).
  • a particularly expedient embodiment is achieved if a frequency converter is arranged in the circuit of the drive motor. Via the frequency converter, the entire sequence of movements of the turnstile can be controlled and adapted to the respective conditions, for example to take into account the geometry of the turnstile with the axis of rotation running at an angle to the ground. It is advantageous if the circuit of the braking device is also connected to a frequency converter, so that the brake can also be precisely controlled.
  • the frequency converter can be influenced by signals from the incremental angle encoder or by the control device.
  • a contactless switch which can be actuated by approaching the turnstile in the respective passage direction or an additional switch which is arranged in the respective passage direction in front of the turnstile and which is connected to a mechanical or electronic lock, in particular actuatable by magnetic card, for opening the Circuit is provided for the braking device.
  • a mechanical or electronic lock in particular actuatable by magnetic card
  • the electronic lock can be connected to a data processing system, so that it can be determined by corresponding data of the magnetic card whether the person requesting the passage has the necessary authorization at all and when and who passed the turnstile.
  • Electromagnetic brakes are preferably used as the braking device. If the braking device can be actuated electromagnetically, depending on the switching of the electromagnets, the braking effect can take place either when the magnets are energized or when they are de-energized, additional compression springs being able to counteract the electromagnetic forces. Depending on the circuit of the braking device, the circuit of the braking device is opened or closed by the above-mentioned movement pulse.
  • a wrap spring brake is also particularly preferably used. This ensures particularly reliable functionality and safety even in the event of a power failure.
  • the turnstile 10 has three brackets 11 which are mounted on a turnstile shaft 12 in a rotationally secure manner.
  • the turnstile shaft 12 is perpendicular, the three brackets 11 each enclose an angle of 120 °.
  • a drive 20 which has a motor 21.
  • the motor 21 drives a drive shaft 22. It is an electric motor 21 with a power supply or voltage source 23, which can also be connected to the motor via a transformer if necessary.
  • the drive shaft 22 leads from the motor 21 to a gearbox 24.
  • the gearbox 24 in the example is an angular gearbox with two bevel gears 25, 26.
  • the bevel gear 25 sits on the drive shaft 22 of the motor 21 and rotates with it.
  • the bevel gear 26 sits securely on the turnstile shaft 12.
  • the motor 21 thus drives the turnstile 10 via the angular gear 24.
  • a worm gear can also be provided, the space requirement of which is particularly small.
  • a control device 30 is also provided. This control device 30 is supplied with a signal from an incremental angle transmitter 32 via a line 33 by a signal output device 31.
  • the incremental angle encoder 32 sits on the drive shaft 22.
  • Incremental angle encoders consist, for example, of an optoelectronic scanning system and one code disc sitting on the axis.
  • the incremental angle encoder 32 then emits a pulse with each rotation by a certain angle. It has (indicated in the drawing) two outputs that emit slightly offset pulses. The offset is expediently 90 ° or ⁇ / 2.
  • the control device 30 can recognize from which pulse it first arrives in which direction the code disk of the incremental angle transmitter 32 and thus the drive shaft 22 has been rotated. Since the rotation of the drive shaft 22 is determined by the rotation of the turnstile shaft 12, the direction of rotation of the turnstile 10 can be inferred directly.
  • the gear ratio of the gear 24 also makes it possible to ensure that the incremental angle transmitter 32 delivers a pulse even at minimal angles of rotation of the turnstile 10.
  • An external command transmitter 34 for example an operator in a control center or an automatic warning function in the event of a disaster or a magnetic card reader (not shown) can provide the control device 30 with additional information. In particular, it is determined which of the two possible directions of rotation of the turnstile 10 is to be operated as the direction of passage and which as the direction of blocking. In addition, the control device 30 can give information about its operating state to the outside in signal lamps 35 or other display devices.
  • a changeover contactor 36 With the information available to her, to a changeover contactor 36 via a line 37 which determines the direction of rotation of the motor 21 and connects it to the power supply.
  • control device 30 operates the Braking device 40.
  • two brakes 41, 42 are provided, which are addressed via lines 43, 44.
  • the brake 41 is actuated electromagnetically, the brake 42 is designed as a wrap spring brake. Details are not shown in Fig. 1.
  • a switch 50 which outputs further information to the control device 30 via a line 51.
  • the switch 50 provides, inter alia, whether the brackets 11 of the turnstile 10 are currently in one of the locking positions offset by 120 ° to one another. In this way, he determines whether, for example, a crossing process of the turnstile 10 by the person has ended.
  • the control device 30 then switches off the motor 21 on the basis of this information.
  • the switch 50 could possibly be replaced if the control device 30 is electronically equipped in such a way that it adds up the pulses coming from the incremental angle transmitter 32 and in this way determines the angular position.
  • the function of the turnstile 10 is as follows: After the command (at 34) by a push button, key switch, card reader, code device or in the event of permanent release, the brake 41 is released via the control device 30 and the user can press the turnstile arms or brackets 11 into the correct (passage) Direction trigger the independent motor rotation in the desired direction. The user can stop the turnstile 10 by hand or by stopping, but turning against the released direction is not possible. One attempt would be the control device 30 cause the brake device 40 to operate and block the turnstile in all directions for a predetermined time.
  • the rotary movement continues when the user releases the turnstile 10 again or the blocking is released.
  • a selector switch (not shown), which also acts on the control device 30 at 34, the operator is able to adjust the turnstile 10 as required so that both the input and the output are used only by authorized persons by the intended command transmitter can be. Only the entrance or only the exit can be reserved for authorized persons and the other generally unblocked direction can be used by everyone.
  • Fig. 2 shows a preferred wrap spring brake, one side view, partially broken away and partially cut and the other in plan view, from the view of arrow A in the left representation.
  • the drive shaft 22 leads into a stationary housing 61 of the wrap spring brake, designated overall by 42.
  • the drive shaft 22 is fixed via a tongue and groove connection 63 with a cylindrical to the drive shaft 22 axially parallel core 64 connected.
  • the drive shaft 22 emerges in the housing 61 on the back of the cylindrical core 64 and is rotatably supported at 65 there.
  • the core 64 is surrounded within the housing 61 by a prestressed coil spring 62. This is connected at one end at 66 to the housing 61. From the fixed end, the helical spring 62 surrounds the core 64 in a plurality of turns (five in the example) before it runs tangentially away from the core 64 to a pulling device indicated at 67, for example an electromagnetically blocked lifting magnet.
  • the coil spring 62 can now be actuated or released by the pulling device 67.
  • the lock is released in the direction of arrow 68. Braking would take place in the opposite direction. Due to the slight reduction in the inside diameter of the helical spring 62, the spring is frictionally engaged on the core 64, since the wrap angle is sufficiently large.
  • the lifting magnet (pulling device 67) is constantly supplied with current. It holds the coil spring 62 against the bias in the direction of the arrow 68.
  • the wrap spring brake 42 is therefore always “free”, and the entire brake control takes place via the electromagnetic brake 41 (FIG. 1).
  • the electromagnetic brake 41 (FIG. 1) no longer exerts a braking action in the event of a power failure, so that the wrap spring brake 42 now remains alone. If the drive shaft 22 is now rotated in the clockwise direction in FIG. 2, there is friction, but rotation is still possible, since this rotation against the winding direction results in the coil spring 62 opening and thus freewheeling.
  • a rotation of the drive shaft 22 in the counterclockwise direction takes place in the winding direction of the helical spring 62, pulls it in and, due to the sufficiently large wrap angle, now causes the helical spring 62 and core 64 to be frictionally engaged, which prevents further rotation of the drive shaft 22.
  • the turnstile In the event of a power failure, the turnstile can therefore be passed unhindered against the slight friction of the wrap spring brake 42 in a predetermined direction. A passerby who is hit by a power failure at the turnstile can therefore leave it in the specified direction and will not be locked up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Control Of Position Or Direction (AREA)
  • Lock And Its Accessories (AREA)
  • Braking Arrangements (AREA)

Claims (10)

  1. Tourniquet (10) dont l'axe (12) peut être empêché de tourner dans un sens au moyen d'un dispositif de blocage commandé, comprenant un dispositif de freinage (40) qui attaque indirectement ou directemt l'axe (12) du tourniquet et peut être actionné par un signal électrique (lignes 43, 44), caractérisé par un dispositif délivreur de signaux (31) qui, lors d'une impulsion de mouvement imprimée au tourniquet (10) dans le sens bloqué, délivre un signal électrique actionnant indirectement ou directement le dispositif de freinage (40).
  2. Tourniquet selon la revendication 1, caractérisé en ce que le dispositif délivreur de signaux (31) comporte un transmetteur d'angle incrémentiel (32).
  3. Tourniquet selon la revendication 1 ou 2, caractérisé par la prévision d'un dispositif de commande (30) auquel sont envoyées des données extérieures concernant le sens bloqué ou le sens passant par un générateur d'instructions (en 34), ainsi que les données de sortie du dispositif délivreur de signaux (31), le dispositif de commande (30) actionnant le dispositif de freinage (40) en fonction des données qui lui sont transmises.
  4. Tourniquet selon une des revendications précédentes, caractérisé en ce que le dispositif de freinage (40) maintient le tourniquet (10) freiné pendant un laps de temps déterminé après l'actionnement avant de le libérer de nouveau.
  5. Tourniquet selon une des revendications précédentes, caractérisé en ce que l'axe (12) du tourniquet est relié à l'arbre (22) d'un entraînement (20) dont le sens de rotation est reversible et le dispositif de freinage (40) attaque l'arbre d'entraînement (22).
  6. Tourniquet selon la revendication 5, caractérisé en ce que l'entraînement (20) comporte un moteur électrique (21) utilisé seulement à une fraction de sa puissance nominale.
  7. Tourniquet selon la revendication 5 ou 6, caractérisé par la disposition dans le circuit électrique du moteur (21) d'un convertisseur de fréquence qui est alimenté en signaux par le dispositif de commande (30).
  8. Tourniquet selon une des revendications précédentes, caractérisé en ce que le dispositif de freinage (40) comporte un frein à ressort enroulé (42) placé sur l'arbre d'entraînement (22) ou sur l'axe (12) du tourniquet.
  9. Tourniquet selon une des revendications précédentes, caractérisé par la prévision d'un second dispositif délivreur de signaux (50) qui, lorsqu'une impulsion de mouvement est imprimée au tourniquet (10) dans le sens passant, délivre un signal électrique actionnant indirectement ou directement le moteur d'entraînement (21).
  10. Tourniquet selon une des revendications précédentes, caractérisé par la prévision d'un commutateur fonctionnant sans contact, qui peut être actionné par une personne s'approchant du tourniquet dans le sens passant, ou par la prévision devant le tourniquet, dans le sens passant, d'un commutateur relié à une serrure mécanique ou électronique, actionnable en particulier par une carte magnétique, en vue du desserrage du dispositif de freinage.
EP89115790A 1988-09-13 1989-08-26 Tourniquet Expired - Lifetime EP0363618B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3831056A DE3831056C1 (fr) 1988-09-13 1988-09-13
DE3831056 1988-09-13

Publications (2)

Publication Number Publication Date
EP0363618A1 EP0363618A1 (fr) 1990-04-18
EP0363618B1 true EP0363618B1 (fr) 1993-02-17

Family

ID=6362823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115790A Expired - Lifetime EP0363618B1 (fr) 1988-09-13 1989-08-26 Tourniquet

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EP (1) EP0363618B1 (fr)
DE (2) DE3831056C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59003855D1 (de) * 1989-07-24 1994-01-27 Malkmus Doernemann Carola Sperreinrichtung und Drehkreuz mit einer solchen Sperreinrichtung.
FR2652854B1 (fr) * 1989-10-10 1995-06-23 Caddie Atel Reunis Portillon de controle dans un passage d'acces ou de sortie d'un lieu determine .
CA2093215A1 (fr) * 1991-08-09 1993-02-10 Wolfram Kocznar Commande pour tourniquet et tourniquet muni de cette commande
DE102007010385B4 (de) * 2007-03-03 2008-11-13 Kaba Gallenschütz GmbH Verriegelungsaggregat für eine Drehkreuzanlage
DE102012106404B4 (de) * 2012-07-17 2019-12-12 Wanzl Metallwarenfabrik Gmbh Eingangs- oder Ausgangsanlage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3019539A (en) * 1959-08-12 1962-02-06 Brecknell Dolman & Rogers Ltd Turnstiles
US3531894A (en) * 1968-03-05 1970-10-06 Advance Data Systems Corp Hydraulic turnstile
DE2414372A1 (de) * 1974-03-26 1975-10-16 Teq Ticket Equipment Gmbh Drehkreuz
US4627193A (en) * 1983-09-20 1986-12-09 Milan Schwarz Revolving door control system
DE3432274A1 (de) * 1984-09-01 1986-03-13 Malkmus-Dörnemann, geb. Dörnemann, Carola, Dr., 3320 Salzgitter Vorrichtung zur ver- und entriegelung von drehkreuzen
IE57246B1 (en) * 1986-02-14 1992-06-17 Digital Display Counting Ltd Operator controlled turnstile
GB2189838B (en) * 1986-04-06 1990-05-09 Alan Mcguinness A control mechanism for a turnstile, and a turnstile
DE3876235D1 (de) * 1988-03-08 1993-01-07 Malkmus Doernemann Carola Drehkreuz.

Also Published As

Publication number Publication date
EP0363618A1 (fr) 1990-04-18
DE3831056C1 (fr) 1989-09-14
DE58903566D1 (de) 1993-03-25

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