EP0453878B1 - Locking cylinder with electromagnetic blocking, specially for profile cylinder in mortise dead locks - Google Patents
Locking cylinder with electromagnetic blocking, specially for profile cylinder in mortise dead locks Download PDFInfo
- Publication number
- EP0453878B1 EP0453878B1 EP91105728A EP91105728A EP0453878B1 EP 0453878 B1 EP0453878 B1 EP 0453878B1 EP 91105728 A EP91105728 A EP 91105728A EP 91105728 A EP91105728 A EP 91105728A EP 0453878 B1 EP0453878 B1 EP 0453878B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electromagnet
- cylinder
- locking
- current
- armature
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
- E05B47/0611—Cylinder locks with electromagnetic control
- E05B47/0619—Cylinder locks with electromagnetic control by blocking the rotor
- E05B47/0626—Cylinder locks with electromagnetic control by blocking the rotor radially
- E05B47/063—Cylinder locks with electromagnetic control by blocking the rotor radially with a rectilinearly moveable blocking element
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
- E05B47/0003—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core
- E05B47/0004—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core said core being linearly movable
Definitions
- the invention relates to a lock cylinder with electromagnetic locking, in particular a profile cylinder intended for mortise locks, which is provided with a cylinder housing and a cylinder core rotatably mounted therein, which can be actuated by key-operated tumbler elements and by an additional, by means of an electromagnet installed in the cylinder housing, under the action of a return spring standing locking element is to be secured against unauthorized rotation, the locking element is to be brought into its locking position securing the cylinder core against rotation by current flow through the electromagnet and is to be held therein, on the other hand if the electromagnet is not supplied with current it is to be brought into the release position by its return spring.
- a lock cylinder of the above type is known from DE-A 37 12 300. It differs from similar locking cylinders provided with additional electromagnetic locking, for example according to DE-A 38 00 823, primarily in that its additional blocking element comes into the blocking position due to current excitation of the electromagnet, but in the release position when the electromagnet is not energized. This has the advantage that the cylinder core can still be unlocked by means of a conventional suitable key in the event of a failure of the electrical power supply or the control of the electromagnet, which is otherwise not possible. Such a lock cylinder can be particularly advantageous can be used wherever the power supply of door locks equipped with it with electronic programming and remote monitoring option requires the fixed power line connection via the door wing anyway.
- the electromagnetic tumbler consists of a W-shaped electromagnet, which is housed flat in the cylinder housing web in the vicinity of the cam lock recess, with an armature lever lying thereon, which runs essentially parallel to the cylinder core, and an arm lever to be actuated by the latter and forming the locking element Flat slide.
- the invention is based on the object of improving a locking cylinder of the type mentioned in such a way that it is less constructional and space-saving with respect to the installation of its electromagnetic locking parts and, above all, does not require any significant additional weakening of the cylinder housing.
- the locking element consists of a locking pin which, together with its comparatively weak return spring, is limitedly displaceably accommodated in a radially running bore of the cylinder core and has its outer end connected to that in a bore in the cylinder housing web part housed, under the action of another, but stronger return spring armature of the electromagnet is supported so that the locking pin when the electromagnet is not energized to the cylindrical located between the cylinder core and the cylinder housing Separating surface reaches, however, in the case of an electromagnet through which current flows, protrudes into the bore of the cylinder housing web part receiving its armature and the return spring acting on the latter.
- the locking element is formed by the armature of the electromagnet, which together with the restoring spring engaging it, is located in a bore of the cylinder housing web part, which protrudes into a locking bore running radially in the cylinder core when the electromagnet flows through, but not with current-carrying electromagnet is to be pushed back into its mounting hole in the cylinder housing web part by the return spring.
- the invention provides that a voltage-current converter controllable by an adjustable timer is installed in the power supply circuit associated with the electromagnet, through which the electromagnet can be operated both for a short time with a stronger inrush current and for a long time with a weaker operating current.
- a voltage-current converter controllable by an adjustable timer is installed in the power supply circuit associated with the electromagnet, through which the electromagnet can be operated both for a short time with a stronger inrush current and for a long time with a weaker operating current.
- the invention also provides that a display device monitoring the electromagnet with regard to its weak operating power supply is provided, which is switched off when the electromagnet flows through a strong or interrupted current flow. In this way, the functional reliability of the locking cylinder can be easily checked and a corresponding error message can be triggered if the holding current flowing through the electromagnet is interrupted.
- the profile lock cylinder which is only shown in cross section, is provided with a cylinder housing 1, in the circular cylindrical part 1 'of which the cylinder head 2, which is used to actuate the door lock or can be coupled to it, is rotatably supported.
- tumbler bores with tumbler elements which are displaceable therein are provided in a conventional manner, which can be displaced by inserting the appropriate key into the key channel 3 of the cylinder core 2 so that they end face in pairs with one another cylindrical separating surface located between the cylinder core 2 and the cylinder housing 1.
- the cylinder core 2 could in principle be rotated by means of the key, provided that the electromagnetic lock of the cylinder core 2 additionally present here would also be canceled by the latter or by remote control.
- a locking pin 5 together with the comparatively weak return spring 6 engaging it, is accommodated to a limited extent in a radially extending bore 4 in the latter.
- This locking pin 5 rests with its outer end 5 'on the widened head 7' of the electromagnetic armature 8, which is accommodated together with the other, but stronger return spring 9 acting on it in the radial bore 10 located in the web part 1 '' of the housing 1.
- the electromagnet 11 which consists of the coil winding 14 surrounding the sleeve 12 and covered by the sleeve 13 to the outside, with the power connection cable 15.
- an end plug 16 made of soft iron is inserted in the lower end of the sleeve 12.
- This is provided with a funnel-shaped recess 16 'into which the lower end 8' of the electromagnet armature 8, which is correspondingly tapered in a funnel shape, can protrude.
- the electromagnetic armature 8 is pressed outwards by the spring 9 acting on it, causing it to lock the locking pin 5 against the action of the weak spring 6 completely pushes back into the core bore 4, so that the two adjacent, oppositely spherical or cylindrical end faces 5 'or 7' of the locking pin 5 or the electromagnet armature 8 reach the release position shown in FIG. 2, in which they have the cylindrical interface 17 tangent between the core 2 and the lock housing 1.
- the cylinder core 2 can be rotated with the aid of the appropriate key, which has also brought the mechanical tumbler elements into the release position, and the lock equipped with this lock cylinder can be actuated accordingly.
- the circuit of the electromagnet 11 must be such that the locking cylinder is released for the duration of the closing process and then the electromagnet armature 8 has to be tightened again in order to lock the locking cylinder. Furthermore, the circuit must ensure that the electromagnet 11 is attracted again with an initially comparatively strong current after a failure of its supply voltage caused by a malfunction and after this malfunction has been eliminated. Finally, it is also important for the functional reliability of this locking cylinder that the operating current flowing through the electromagnet 11 can be monitored, since when the current is interrupted the electromagnet armature 8 is not tightened and the locking cylinder could simply be closed with a mechanical key. Therefore, an error message is issued if the power is interrupted.
- the circuit must be dimensioned such that a short input pulse of, for example, about 50 ms releases the lock cylinder and locks it again after an adjustable time. Since the lock cylinder and the circuit can have several meters of connecting lines, it is advisable to also ensure that no interference pulses lead to undesired triggering of the electromagnet 11 by external radiation.
- FIG. 1 The expedient structure of such a circuit is shown in the block diagram shown in FIG.
- This circuit is operated with a constant voltage U, which is present at the voltage-current converter 20.
- This provides the power stage 21 connected upstream of the electromagnet 11 with a comparatively strong inrush current for attracting the electromagnet armature 8 and a comparatively weak current for holding the armature 8 in the blocking or operating position shown in FIG.
- the interference pulses are filtered out from the signal S incident here.
- the control signal is converted in such a way that the downstream timer switch 23 can be safely controlled.
- the time circuit controls the power stage 21 and the voltage-current converter 20.
- the current flow through the magnet 11 is first switched off.
- the magnetic monitoring device 24 does not report the lack of current in the downstream display device 25 as a magnetic defect.
- the electromagnet 11 is attracted by a comparatively strong inrush current that flows through the magnet only for a short time.
- the magnet 11 is operated with a comparatively weak current in the attracted position of the electromagnet armature 8.
- the monitoring device 24 is effective, which therefore monitors the operating current flowing through the electromagnet 11. If it fails, an error signal is output on the display device 25.
- the timer 23 also ensures that after the failure and switching on of the supply voltage, the electromagnet armature 8 is again attracted by a strong inrush current and is then held in the pull-in position with a weaker holding current.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Lock And Its Accessories (AREA)
- Clamps And Clips (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Die Erfindung betrifft einen Schließzylinder mit elektromagnetischer Verriegelung, insbesondere einen für Einsteckschlösser bestimmten Profilzylinder, der mit einem Zylindergehäuse und einem darin drehverstellbar gelagerten Zylinderkern versehen ist, der durch schlüsselbetätigbare Zuhaltungselemente sowie durch ein zusätzliches, mittels eines im Zylindergehäuse eingebauten Elektromagneten betätigbares, unter Wirkung einer Rückstellfeder stehendes Sperrelement gegen unbefugtes Verdrehen zu sichern ist, wobei das Sperrelement in seine den Zylinderkern gegen Verdrehen sichernde Sperrstellung durch Stromdurchfluß des Elektromagneten zu bringen und darin zu halten ist, hingegen bei nicht stromdurchflossenem Elektromagneten durch dessen Rückstellfeder in Freigabestellung zu bringen ist.The invention relates to a lock cylinder with electromagnetic locking, in particular a profile cylinder intended for mortise locks, which is provided with a cylinder housing and a cylinder core rotatably mounted therein, which can be actuated by key-operated tumbler elements and by an additional, by means of an electromagnet installed in the cylinder housing, under the action of a return spring standing locking element is to be secured against unauthorized rotation, the locking element is to be brought into its locking position securing the cylinder core against rotation by current flow through the electromagnet and is to be held therein, on the other hand if the electromagnet is not supplied with current it is to be brought into the release position by its return spring.
Ein Schließzylinder obiger Art ist durch die DE-A 37 12 300 bekannt. Er unterscheidet sich von ähnlichen, mit zusätzlicher elektromagnetischer Zuhaltung versehenen Schließzylindern, z.B. nach der DE-A 38 00 823, vor allem dadurch, daß sein zusätzliches Sperrelement durch Stromerregung des Elektromagneten in die Sperrstellung, dagegen bei nicht stromerregtem Elektromagneten in die Freigabestellung gelangt. Das hat den Vorteil, daß der Zylinderkern bei etwaigem Ausfall der elektrischen Stromversorgung oder der Steuerung des Elektromagneten immer noch mittels eines herkömmlichen passenden Schlüssels entsperrt werden kann, was andernfalls nicht möglich ist. Ein solcher Schließzylinder kann mit besonderem Vorteil überall dort verwendet werden, wo die Stromversorgung von damit ausgerüsteten Türschlössern mit elektronischer Programmierung und Fernüberwachungsmöglichkeit den ortsfesten Stromleitungsanschluß über den Türflügel ohnehin erfordert. Da für die Aufrechterhaltung der den Zylinderkern gegen Verdrehen sichernden Sperrstellung des Sperrelements nur vergleichsweise wenig Strom notwendig ist, spielt der dadurch bedingte elektrische Energieverbrauch bei solcher Stromversorgung des Türschlosses und seiner Elektronik keine nennenswerte Rolle. Bei dem gattungsgleichen bekannten Schließzylinder besteht die elektromagnetische Zuhaltung aus einem flachliegend in dem Zylindergehäusesteg in der Nähe der Schließbart-Ausnehmung untergebrachten, W-förmigen Elektromagneten mit einem darauf liegenden, im wesentlichen parallel zum Zylinderkern verlaufenden Ankerhebel und einem durch letzteren zu betätigenden, das Sperrelement bildenden Flachschieber. Da diese Teile recht bau- und platzaufwendig sind, bedingt ihr Einbau in der Nähe der Schließbart-Ausnehmung eine nicht unerhebliche Schwächung des Zylindergehäuses, daß an dieser Stelle durch das Vorhandensein der Schließbart-Ausnehmung und zusätzlich auch durch die im Gehäusesteg liegende Stulpschrauben-Gewindebohrung ohnehin schon geschwächt und daher aufbruchgefährdet ist.A lock cylinder of the above type is known from DE-A 37 12 300. It differs from similar locking cylinders provided with additional electromagnetic locking, for example according to DE-A 38 00 823, primarily in that its additional blocking element comes into the blocking position due to current excitation of the electromagnet, but in the release position when the electromagnet is not energized. This has the advantage that the cylinder core can still be unlocked by means of a conventional suitable key in the event of a failure of the electrical power supply or the control of the electromagnet, which is otherwise not possible. Such a lock cylinder can be particularly advantageous can be used wherever the power supply of door locks equipped with it with electronic programming and remote monitoring option requires the fixed power line connection via the door wing anyway. Since only comparatively little current is required to maintain the locking position of the locking element which prevents the cylinder core from rotating, the electrical energy consumption thereby caused does not play a significant role in the case of such a power supply for the door lock and its electronics. In the case of the known lock cylinder of the same type, the electromagnetic tumbler consists of a W-shaped electromagnet, which is housed flat in the cylinder housing web in the vicinity of the cam lock recess, with an armature lever lying thereon, which runs essentially parallel to the cylinder core, and an arm lever to be actuated by the latter and forming the locking element Flat slide. Since these parts are quite constructional and space-consuming, their installation in the vicinity of the lock bit recess causes a not inconsiderable weakening of the cylinder housing, that at this point anyway due to the presence of the lock bit recess and additionally due to the cuff screw threaded bore located in the housing web is already weakened and therefore at risk of breaking up.
Der Erfindung liegt demgegenüber die Aufgabe zugrunde, einen Schließzylinder der eingangs erwähnten Gattung dahingehend zu verbessern, daß er bezüglich des Einbaus seiner elektromagnetischen Zuhaltungsteile weniger bauaufwendig und platzsparender ist und vor allem auch keine nennenswerte zusätzliche Schwächung des Zylindergehäuses erfordert.The invention is based on the object of improving a locking cylinder of the type mentioned in such a way that it is less constructional and space-saving with respect to the installation of its electromagnetic locking parts and, above all, does not require any significant additional weakening of the cylinder housing.
Diese Aufgabe wird ausgehend von einem Schließzylinder der eingangs erwähnten Gattung erfindungsgemäß dadurch gelöst, daß das Sperrelement aus einem mitsamt seiner vergleichsweise schwachen Rückstellfeder in einer radial verlaufenden Bohrung des Zylinderkerns begrenzt verschieblich untergebrachten Sperrstift besteht, der mit seinem äußeren Ende an dem in einer Bohrung des Zylindergehäusestegteils untergebrachten, unter Wirkung einer anderen, jedoch stärkeren Rückstellfeder stehenden Anker des Elektromagneten so abgestützt ist, daß der Sperrstift bei nicht stromdurchflossenem Elektromagneten an die zwischen Zylinderkern und Zylindergehäuse gelegene zylindrische Trennfläche heranreicht, hingegen bei stromdurchflossenem Elektromagneten in die seinen Anker und die an letzterem angreifende Rückstellfeder aufnehmende Bohrung des Zylindergehäusestegteils hineinragt.This object is achieved on the basis of a lock cylinder of the type mentioned at the outset in that the locking element consists of a locking pin which, together with its comparatively weak return spring, is limitedly displaceably accommodated in a radially running bore of the cylinder core and has its outer end connected to that in a bore in the cylinder housing web part housed, under the action of another, but stronger return spring armature of the electromagnet is supported so that the locking pin when the electromagnet is not energized to the cylindrical located between the cylinder core and the cylinder housing Separating surface reaches, however, in the case of an electromagnet through which current flows, protrudes into the bore of the cylinder housing web part receiving its armature and the return spring acting on the latter.
Hierdurch wird nicht nur eine stromsparende Einbauweise für die elektromagnetische Verriegelung erziehlt sondern auch sichergestellt, daß der Elektromagnetanker selber nicht unmittelbar die Verdrehsicherung des Zylinderkerns übernimmt und mithin keiner dementsprechenden Abnutzung und Scherbeanspruchung ausgesetzt ist.This not only achieves a power-saving installation method for the electromagnetic locking but also ensures that the electromagnetic armature itself does not directly take over the anti-rotation protection of the cylinder core and is therefore not exposed to any corresponding wear and shear stress.
Grundsätzlich ist es aber auch möglich, daß bei dem gattungsgleichen Schließzylinder das Sperrelement von dem mitsamt der an ihm angreifenden Rückstellfeder in einer Bohrung des Zylindergehäusestegteils untergebrachten Anker des Elektromagneten gebildet wird, der bei stromdurchflossenem Elektromagneten in eine im Zylinderkern radial verlaufende Sperrbohrung hineinragt, dagegen bei nicht stromdurchflossenem Elektromagneten durch die Rückstellfeder in seine Aufnahmebohrung im Zylindergehäusestegteil zurückzudrücken ist.In principle, however, it is also possible that, in the case of the lock cylinder of the same type, the locking element is formed by the armature of the electromagnet, which together with the restoring spring engaging it, is located in a bore of the cylinder housing web part, which protrudes into a locking bore running radially in the cylinder core when the electromagnet flows through, but not with current-carrying electromagnet is to be pushed back into its mounting hole in the cylinder housing web part by the return spring.
Weiterhin sieht die Erfindung vor, daß in den dem Elektromagneten zugeordneten Stromversorgungskreis ein durch ein einstellbares Zeitschaltglied steuerbarer Spannungs-Strom-Wandler eingebaut ist, durch den der Elektromagnet sowohl kurzzeitig mit stärkerem Einschaltstrom als auch langzeitig mit schwächerem Betriebsstrom zu betreiben ist. Auf diese Weise wird den Erfordernissen des Elektromagneten Rechnung getragen, der zum Anziehen seines Ankers wegen des dabei zu überwindenden größeren Luftspalts einen wesentlich stärkeren Strom benötigt als er zum bloßen Halten des Ankers in seiner angezogenen Stellung notwendig ist, in der ein zu starker Strom nicht nur vermehrten Energieverbrauch sondern auch zu starke Erwärmung des Elektromagneten und seiner Umgebung bedingen würde.Furthermore, the invention provides that a voltage-current converter controllable by an adjustable timer is installed in the power supply circuit associated with the electromagnet, through which the electromagnet can be operated both for a short time with a stronger inrush current and for a long time with a weaker operating current. In this way, the requirements of the electromagnet are taken into account, which requires a much stronger current to attract its armature because of the larger air gap to be overcome than it is necessary to merely hold the armature in its attracted position, in which a too strong current is not only increased energy consumption but also to strong heating of the electromagnet and its surroundings would cause.
Schließlich sieht die Erfindung noch vor, daß eine den Elektromagneten hinsichtlich seiner schwachen Betriebsstromversorgung überwachende Anzeigeeinrichtung vorgesehen ist, die bei funktionsbedingt starkem oder unterbrochenem Stromdurchfluß des Elektromagneten abgeschaltet ist. Auf diese Weise kann die Funktionssicherheit des Schließzylinders leicht überprüft und bei Stromunterbrechung des den Elektromagneten durchfließenden Haltestroms eine entsprechende Fehlermeldung ausgelöst werden.Finally, the invention also provides that a display device monitoring the electromagnet with regard to its weak operating power supply is provided, which is switched off when the electromagnet flows through a strong or interrupted current flow. In this way, the functional reliability of the locking cylinder can be easily checked and a corresponding error message can be triggered if the holding current flowing through the electromagnet is interrupted.
In der Zeichnung ist ein vorteilhaftes Ausführungsbeispiel des neuen Schließzylinders dargestellt, und zwar in senkrechtem durch den Elektromagneten und das durch ihn betätigbare Sperrelement verlaufendem Querschnitt, wobei
- Fig.1
- die Sperrstellung und
- Fig.2
- die Freigabestellung des Sperrelements wiedergeben, während in
- Fig.3
- ein zugehöriges Blockschaltbild dargestellt ist.
- Fig. 1
- the blocking position and
- Fig. 2
- reflect the release position of the locking element while in
- Fig. 3
- an associated block diagram is shown.
Der lediglich im Querschnitt dargestellte Profilschließzylinder ist mit einem Zylindergehäuse 1 versehen, in dessen kreiszylindrischem Teil 1' der einen zur Betätigung des Türschlosses dienenden Schließbart tragende bzw. mit ihm kuppelbare Zylinderkern 2 drehverstellbar gelagert ist. Im Zylinderkern 2 sowie im Stegteil 1'' des Zylindergehäuses 1 sind in herkömmlicher Weise Zuhaltungsbohrungen mit darin verschieblichen Zuhaltungselementen vorgesehen, die durch Einführen des passenden Schlüssels in den Schlüsselkanal 3 des Zylinderkerns 2 so verschoben werden können, daß sie mit ihren paarweise aneinanderliegenden Stirnflächen in die zwischen Zylinderkern 2 und Zylindergehäuse 1 gelegene zylindrische Trennfläche gelangen. Dadurch könnte der Zylinderkern 2 grundsätzlich mittels des Schlüssels verdreht werden, sofern durch letzteren oder aber auch durch Fernsteuerung zugleich auch die hier zusätzlich vorhandene elektromagnetische Verriegelung des Zylinderkerns 2 aufgehoben würde.The profile lock cylinder, which is only shown in cross section, is provided with a
Für diese zusätzliche elektromagnetische Verriegelung des Zylinderkerns 2 ist in einer in letzterem vorhandenen radial verlaufenden Bohrung 4 ein Sperrstift 5 mitsamt der an ihm angreifenden, vergleichsweise schwachen Rückstellfeder 6 begrenzt verschieblich untergebracht. Dieser Sperrstift 5 liegt mit seinem äußeren Ende 5' an dem verbreiterten Kopf 7' des Elektromagnetankers 8 an, der mitsamt der an ihm angreifenden anderen, jedoch stärkeren Rückstellfeder 9 in der im Stegteil 1'' des Gehäuses 1 gelegenen Radialbohrung 10 untergebracht ist. Im erweiterten Abschnitt 10' dieser Gehäusebohrung 10 befindet sich der Elektromagnet 11, der aus der die Hülse 12 umgebenden und durch die Hülse 13 nach außen abgedeckten Spulenwicklung 14 mit dem Stromanschlußkabel 15 besteht. In das untere Ende der Hülse 12 ist ein aus Weicheisen bestehender Abschlußstopfen 16 eingesetzt. Dieser ist mit einer trichterförmigen Aussparung 16' versehen, in die das untere entsprechend trichterförmig zugespitzte Ende 8' des Elektromagnetankers 8 hineinzuragen vermag.For this additional electromagnetic locking of the
Bei Stromdurchfluß des Elektromagneten 11 bzw. seiner Spulenwicklung 14 wird der Elektromagnetanker entgegen der Wirkung der an ihm angreifenden Rückstellfeder 9 in der in Fig.1 dargestellten, eingefahrenen Stellung in der Gehäusebohrung 10 gehalten, so daß der Sperrstift 5 unter Wirkung der Feder 6 mit seinem äußeren Ende 5' in die Gehäusebohrung 10 hineinragt und dadurch den Zylinderkern 2 gegen unbefugtes Verdrehen sperrt. Zur Aufrechterhaltung dieser Sperrstellung ist lediglich ein vergleichsweise schwacher Betriebsstrom notwendig. Wird hingegen die Stromzufuhr zur Spule 14 mit Hilfe des passenden, in den Kanal 3 eingesteckten Schlüssels oder aber auch durch fernsteuerungs- oder störungsbedingten Stromausfall unterbrochen, so wird der Elektromagnetanker 8 durch die an ihm angreifende Feder 9 nach außen gedrückt, wodurch er den Sperrstift 5 gegen die Wirkung der schwachen Feder 6 vollständig in die Kernbohrung 4 zurückdrückt, so daß die beiden aneinanderliegenden, entgegengesetzt ballig oder zylindrisch ausgebildeten Stirnflächen 5' bzw. 7' des Sperrstiftes 5 bzw. des Elektromagnetankers 8 in die in Fig.2 dargestellte Freigabestellung gelangen, in der sie die zylindrische Trennfläche 17 zwischen dem Kern 2 und dem Schließgehäuse 1 tangieren. Dadurch kann der Zylinderkern 2 mit Hilfe des passenden auch die mechanischen Zuhaltungselemente in die Freigabeposition gebracht habenden Schlüssels verdreht und damit das mit diesem Schließzylinder ausgerüstete Schloß entsprechend betätigt werden.When current flows through the
Die Schaltung des Elektromagneten 11 muß so beschaffen sein, daß der Schließzylinder für die Dauer des Schließvorganges freigegeben und danach der Elektromagnetanker 8 aber wieder angezogen werden muß, um den Schließzylinder zu sperren. Weiterhin muß die Schaltung dafür sorgen, daß der Elektromagnet 11 nach etwa störungsbedingtem Ausfall seiner Versorgungsspannung und nach Beseitigung dieser Störung wieder mit einem zunächst vergleichsweise starken Strom angezogen wird. Schließlich ist es für die Funktionssicherheit dieses Schließzylinders auch wichtig, daß der den Elektromagneten 11 durchfließende Betriebsstrom überwacht werden kann, da bei Stromunterbrechung der Elektromagnetanker 8 nicht angezogen ist und der Schließzylinder einfach mit einem mechanischen Schlüssel geschlossen werden könnte. Deshalb wird bei Stromunterbrechung eine Fehlermeldung ausgegeben. Damit der Schließzylinder vielfältig eingesetzt werden kann, ist die Schaltung so zu bemessen, daß ein kurzer Eingangsimpuls von beispielsweise etwa 50ms den Schließzylinder freigibt und nach einer einstellbaren Zeit ihn wieder sperrt. Da der Schließzylinder und die Schaltung über mehrere Meter Anschlußleitungen verfügen kann, empfiehlt es sich, auch dafür zu sorgen, daß durch Fremdeinstrahlung keine Störimpulse zum unerwünschten Auslösen des Elektromagneten 11 führen.The circuit of the
Den zweckmäßigen Aufbau einer solchen Schaltung vermittelt das in Fig.3 wiedergegebene Blockschaltbild. Diese Schaltung wird mit einer konstanten Spannung U betrieben, die am Spannungs-Strom-Wandler 20 anliegt. Dieser stellt der dem Elektromagneten 11 vorgeschalteten Leistungsstufe 21 zum Anziehen des Elektromagnetankers 8 einen vergleichsweise starken Einschaltstrom und zum Halten des Ankers 8 in der in Fig.1 dargestellten Sperr- bzw. Betriebsstellung einen vergleichsweise schwachen Strom zur Verfügung. In der Eingangsstufe 22 werden aus dem hier einfallenden Signal S die Störimpulse ausgefiltert. Das Ansteuersignal wird darin so umgewandelt, daß damit das nachgeschaltete Zeitschaltglied 23 sicher angesteuert werden kann.The expedient structure of such a circuit is shown in the block diagram shown in FIG. This circuit is operated with a constant voltage U, which is present at the voltage-
Die Zeitschaltung steuert die Leistungsstufe 21 und den Spannungs-Strom-Wandler 20. Bei einem berechtigten Schließvorgang wird zunächst der Stromdurchfluß durch den Magneten 11 abgeschaltet. In diesem Schaltungszustand wird dafür gesorgt, daß die Magnetüberwachungseinrichtung 24 das Fehlen des Stroms in der nachgeschalteten Anzeigeeinrichtung 25 nicht etwa als Magnetdefekt meldet. Nach einer bestimmten im Zeitschaltglied 23 eingestellten Zeitdauer wird der Elektromagnet 11 durch einen vergleichsweise starken Einschaltstrom angezogen, der nur kurze Zeit durch den Magneten fließt. Danach wird der Magnet 11 mit einem vergleichsweise schwachen Strom in der Anzugstellung des Elektromagnetankers 8 betrieben. In diesem Schaltungszustand ist die Überwachungseinrichtung 24 wirksam, die also den den Elektromagneten 11 durchfließenden Betriebsstrom überwacht. Bei dessen Ausfall wird an der Anzeigeeinrichtung 25 ein Fehlersignal ausgegeben.The time circuit controls the
Das Zeitschaltglied 23 sorgt auch dafür, daß nach dem Ausfall und erneuten Einschalten der Versorgungsspannung der Elektromagnetanker 8 zunächst wieder durch einen starken Einschaltstrom angezogen und sodann mit schwächerem Haltestrom in der Anzugstellung gehalten wird.The
Claims (5)
- A locking cylinder having an electro-magnetic locking mechanism in particular for mortise locks which have a particular profiled cylinder, said locking cylinder having a cylinder casing (1) and rotatably mounted therein a cylinder core (2) which can be secured by virtue of keyoperated tumbler members as well as by an additional locking member (5) against unauthorised rotation, the said locking member (5) being operated by means of an electromagnet (11) installed in the cylinder casing (1) and being influenced by a return spring (6), wherein the locking member (5) can be brought into its locking position, which protects the cylinder core (2) from being rotated, and held therein by the current flowing through the electromagnet (11), whereas when there is no current flowing through the electromagnet (11) the locking member (5) is brought into the release position by its return spring (9), characterised in that the locking member consists of a locking pin (5) which together with its comparatively weak return spring (6) is accommodated with a limited amount of displacement in a radial bore (4) of the cylinder core (2) and which locking pin is supported with its outer end (5') abutting the armature (8) of the electromagnet (11) disposed in a bore (10) of the cylinder casing leg part (1'') and which armature is influenced by a second and stronger return spring (9) in such a way that when there is no current flowing through the electromagnet (11) the locking pin (5) extends as far as the cylindrical dividing surface (17) between the cylinder core (2) and the cylinder casing (1), whereas when current is flowing through the electromagnet (11) the locking pin protrudes into the bore (10) of the cylinder casing leg part (1''), which bore receives the armature (8) of the locking pin and the return spring (9) seated against the armature.
- A locking cylinder according to claim 1, characterised in that the abutting end faces (5',7') of the locking pin (5) and of the electromagnet armature (8) are formed spherically and cylindrically in a complementary manner.
- A locking cylinder according to the preamble of claim 1, characterised in that the locking member (5) is formed by the armature (8) of the electromagnet (11) disposed together with the return spring (9) engaging thereon in a bore (10) of the cylinder casing leg part (1''), which armature, when current is flowing through the electromagnet, protrudes into a locking bore (4) extending radially in the cylinder core (2), whereas when there is no current flowing through the electromagnet (11) it is pushed back by the return spring (6) into its receiving bore (10) in the cylinder casing leg part (1'').
- A locking cylinder according to any one of claims 1 to 3, characterised in that a voltage-current converter (20), which is controllable by an adjustable time switch member (23), is installed in the current supply circuit associated with the electromagnet (11) and by means of the voltage-current converter the electromagnet (11) can be powered both for a short time with a strong start-up current and for a long period with a weaker operating current.
- A locking cylinder according to claim 4, characterised in that a monitoring device (24) indicates by way of a display device (25) when current is not flowing through the electromagnet (11) outside the release time predetermined by the timing member (23).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9004623U DE9004623U1 (en) | 1990-04-24 | 1990-04-24 | Locking cylinders with electromagnetic locking, especially profile cylinders intended for mortise locks |
| DE9004623U | 1990-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0453878A1 EP0453878A1 (en) | 1991-10-30 |
| EP0453878B1 true EP0453878B1 (en) | 1994-08-31 |
Family
ID=6853157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91105728A Expired - Lifetime EP0453878B1 (en) | 1990-04-24 | 1991-04-11 | Locking cylinder with electromagnetic blocking, specially for profile cylinder in mortise dead locks |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0453878B1 (en) |
| AT (1) | ATE110814T1 (en) |
| DE (2) | DE9004623U1 (en) |
| ES (1) | ES2058972T3 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE505493C2 (en) * | 1992-03-26 | 1997-09-08 | Assa Ab | Cylinder |
| DE19901839A1 (en) * | 1999-01-19 | 2000-07-20 | Winkhaus Fa August | Electromagnetically activatable locking mechanism |
| DE19901838A1 (en) * | 1999-01-19 | 2000-07-20 | Winkhaus Fa August | Electromagnetically activatable locking mechanism |
| DE10328297A1 (en) | 2003-06-23 | 2005-01-20 | Buga Technologies Gmbh | Electromechanical lock cylinder |
| DE102004039531A1 (en) | 2004-08-14 | 2006-02-23 | Aug. Winkhaus Gmbh & Co. Kg | locking mechanism |
| EP1739631B1 (en) | 2005-06-24 | 2012-10-24 | Assa Abloy Ab | Modular cylinder lock |
| EP1736620A1 (en) * | 2005-06-24 | 2006-12-27 | BUGA Technologies GmbH | Lock cylinder with locked knob shaft |
| US7845202B2 (en) | 2006-09-22 | 2010-12-07 | Assa Abloy Ab | Interchangeable electromechanical lock core |
| DE102008018906B4 (en) * | 2008-04-14 | 2011-06-30 | ASTRA Gesellschaft für Asset Management mbH & Co. KG, 30890 | Lock cylinder arrangement |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3670538A (en) * | 1970-11-12 | 1972-06-20 | Robert E Curry | Controllable key lock |
| GB2055951B (en) * | 1980-08-04 | 1983-03-16 | Day H V | Locks |
| DE3501345A1 (en) * | 1985-01-17 | 1986-07-17 | Wolfgang 7961 Ebersbach-Musbach Bartel | PROFILE CYLINDER |
| AU5869586A (en) * | 1985-10-25 | 1987-05-19 | Lowe & Fletcher Limited | Security device, especially electrically operated lock |
| DE3712300A1 (en) * | 1987-04-10 | 1988-10-27 | Bks Gmbh | PROFILE LOCKING CYLINDER, ESPECIALLY FOR POCKET LOCKS |
| DE3800823A1 (en) * | 1987-08-19 | 1989-07-27 | Bks Gmbh | LOCKING CYLINDERS, PARTICULAR PROFILE CYLINDERS, IN PARTICULAR FOR POCKET LOCKS |
| DE3727566A1 (en) * | 1987-08-19 | 1989-03-02 | Bks Gmbh | Lock cylinder with electromagnetically actuable locking element |
| DE3800414A1 (en) * | 1988-01-09 | 1989-07-20 | Bks Gmbh | LOCKING CYLINDERS, PARTICULAR PROFILE CYLINDERS, IN PARTICULAR FOR POCKET LOCKS |
| DE3834538C1 (en) * | 1988-10-11 | 1989-12-21 | Geiger-Sicherheitssysteme Gmbh Haus Fuer Sicherheit, 7000 Stuttgart, De | Electronic control device on a control board for controlling a magnetic and/or electromechanical locking device for doors |
| DE8914508U1 (en) * | 1989-02-02 | 1990-06-13 | DOM-Sicherheitstechnik GmbH & Co KG, 5040 Brühl | Locking cylinders, especially for mortise locks |
-
1990
- 1990-04-24 DE DE9004623U patent/DE9004623U1/en not_active Expired - Lifetime
-
1991
- 1991-04-11 DE DE59102686T patent/DE59102686D1/en not_active Expired - Fee Related
- 1991-04-11 AT AT91105728T patent/ATE110814T1/en not_active IP Right Cessation
- 1991-04-11 ES ES91105728T patent/ES2058972T3/en not_active Expired - Lifetime
- 1991-04-11 EP EP91105728A patent/EP0453878B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ES2058972T3 (en) | 1994-11-01 |
| DE9004623U1 (en) | 1990-06-21 |
| ATE110814T1 (en) | 1994-09-15 |
| EP0453878A1 (en) | 1991-10-30 |
| DE59102686D1 (en) | 1994-10-06 |
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