EP1380714B1 - Cylinder lock with a blocking device - Google Patents

Cylinder lock with a blocking device Download PDF

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Publication number
EP1380714B1
EP1380714B1 EP03011871A EP03011871A EP1380714B1 EP 1380714 B1 EP1380714 B1 EP 1380714B1 EP 03011871 A EP03011871 A EP 03011871A EP 03011871 A EP03011871 A EP 03011871A EP 1380714 B1 EP1380714 B1 EP 1380714B1
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EP
European Patent Office
Prior art keywords
actuator
locking bolt
locking
core
movement
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
EP03011871A
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German (de)
French (fr)
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EP1380714A2 (en
EP1380714A3 (en
Inventor
Gernot Hartmann
Peter Bickert
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Aug Winkhaus GmbH and Co KG
Original Assignee
Aug Winkhaus GmbH and Co KG
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Publication date
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Priority to SI200331797T priority Critical patent/SI1380714T1/en
Publication of EP1380714A2 publication Critical patent/EP1380714A2/en
Publication of EP1380714A3 publication Critical patent/EP1380714A3/en
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Publication of EP1380714B1 publication Critical patent/EP1380714B1/en
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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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/04—Spring arrangements in locks
    • E05B2015/0431—Modifying spring characteristic or tension
    • 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
    • E05B2047/0048—Circuits, feeding, monitoring
    • E05B2047/0065—Saving energy
    • 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
    • E05B47/0011—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with piezoelectric actuators
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00—Locks or fastenings with special structural characteristics
    • E05B63/0056—Locks with adjustable or exchangeable lock parts

Definitions

  • the invention relates to a lock cylinder with a locking mechanism for selectively blocking or releasing a housing arranged in a movable core, with a guided in the range of movement of the core locking bar, with a provided for biasing the locking bar in the core blocking direction locking spring, with an actuator for Holder of the locking bolt, wherein the directions of movement of the locking bolt and the actuator are substantially transverse to each other, and with control electronics for controlling the actuator, wherein the actuator is fixed with its locking bar remote end in the housing and the actuator for holding the locking bolt by clamping in which the movement of the core releasing position and for releasing the movement of the locking bar is formed in the movement of the core blocking position.
  • a locking mechanism in which in the releasing position of the core, a blocking element is held by an electromagnet in a housing.
  • the blocking element is biased in the direction of the core.
  • the electromagnet moves a pin which penetrates into an annular groove of the blocking element.
  • Such a lock cylinder with a locking mechanism is for example from the DE 32 08 818 C2 known.
  • the locking bar is designed pin-shaped and protrudes in obliquely to the lateral surface expiring domes of the core.
  • a bearing axis of the actuator and the locking bolt are arranged in parallel, so that when driving the piezoelectric element, the actuator is pressed into a locking recess of the locking bolt.
  • a return spring pulls the actuator back out of the recess.
  • the piezoelectric element must be permanently driven to hold the actuator in the locking recess of the locking bar.
  • the control so that the actuator is moved out of the return spring from the locking recess of the locking bolt.
  • the piezoelectric element of the locking spring is arranged opposite and thus moves a structural unit of actuator and locking bolt against the force of the locking spring.
  • a disadvantage of the known locking mechanism that the actuator is arranged either opposite to the locking spring or its own return spring, so that when releasing the movement of the core of the actuator against the force of at least one spring must be moved. This leads to a high energy consumption of the locking mechanism. Furthermore, the constant readiness of the control electronics and a constant control of the piezoelectric element requires a very high energy consumption. Since such locking mechanisms are often used in front doors of commercial or residential areas and a longer period without power should be functional, high energy consumption is very disturbing.
  • a locking device in which a strike plate or a bolt has the actuator.
  • the actuator may, for example, a piezoelectric element, a magnetostrictive actuator or a shape memory actuator and pushes a lever against the force of a spring against a profile. Even with this locking device, the movement of the actuator against the force of the spring leads to a very high power consumption.
  • the invention is based on the problem of designing a lock cylinder with a locking mechanism of the type mentioned above so that it has a particularly low energy consumption.
  • the actuator is at least partially formed as a piezobender or magnetostrictive element and that the locking bolt during insertion of a key in a closing channel or the initial rotation of the core is displaced and projecting into the range of motion of the actuator unevenness to move of the actuator, that the actuator has a pulse generating during its movement, preferably piezoelectric element and that the control electronics can be activated by the pulse generated by the movement of the actuator.
  • the actuator can move freely and thus without obstruction of a spring.
  • the energy required to move the actuator is therefore particularly low.
  • the actuator is only activated when a release of the locking mechanism is to take place. Because the nucleus is usually blocked in the majority of the time Position remains, this leads to a strong reduction in energy requirements.
  • On the arranged on the locking bar locking recess can be omitted, since the locking bar is held by clamping forces. In this way, the path that the actuator must travel between the position blocking the movement of the core and the position which releases the movement of the core is kept particularly small. This leads to a further reduction in the energy requirement of the actuator.
  • the entrapment of the locking bolt by the actuator in the movement of the core releasing position also leads to very low holding forces of the locking bolt.
  • the locking bar is clamped between a single actuator and the housing.
  • the locking cylinder according to the invention requires a particularly small space when the actuator is plate-shaped and fixed with its remote from the locking latch end in the housing and when a free end of the actuator is aligned against the locking bar in its movement of the core releasing position.
  • the locking mechanism can be particularly easily arranged in a profile lock cylinder.
  • the piezoelectric Element is designed plate-shaped and essentially forms the actuator.
  • Clamping the locking bolt or its entanglement with the actuator can be easily avoided according to another advantageous embodiment of the invention, when the control electronics is formed at an intended blocking of the core for reverse control of the actuator to release the movement of the locking bolt.
  • the bumps arranged on the locking bar require a particularly low design effort, if the lateral surface of the locking bolt is bulbous or wavy.
  • the clamping force required to hold the locking bolt can be easily adjusted according to another advantageous embodiment of the invention, when an actuator for adjusting the position of the locking bolt relative to the actuator is arranged on the opposite side of the actuator of the locking bolt.
  • the locking spring has an adjusting element for adjusting the biasing force of the locking bolt.
  • the adjusting element is formed as screwed into a receiving the locking bolt channel grub screw or a ball pressed therein.
  • High holding forces of the locking bolt with a particularly low energy consumption of the actuator can be easily generated according to another advantageous embodiment of the invention, if at least one friction lining on the lateral surface the locking bolt and / or the actuator and / or a guide of the locking bolt is provided.
  • the friction lining is preferably formed as a coating of the corresponding component.
  • the mounting of the lock cylinder according to the invention is particularly simple if the housing has a transition into a stepped bore pocket and if guided in the stepped bore of the locking bolt and is arranged in the pocket of the actuator. By this design also the locking bolt can be secured by a shoulder of the stepped bore from falling out.
  • FIG. 1 shows a lock cylinder unlockable from two sides with a housing 1 and with a core 2 rotatably disposed therein.
  • the core 2 has in its central region a lock bit 3 and in its ends in each case a closing channel 4, 5 for insertion of a key, not shown.
  • the closing channels 4, 5 have a round cross-section.
  • each driver 6, 7 are arranged on the end faces of the core 2.
  • the drivers 6, 7 are used to produce a positive connection with a Reide also not shown the key.
  • the lock cylinder has an electronically activated locking mechanism 8, each near the end faces
  • the locking mechanism 8 has an actuator 11 and one of a locking spring 12 in the direction of the core 2 biased locking bar 13.
  • the actuator 11 has a plate-shaped piezoelectric element 14.
  • the piezoelectric element 14 is fastened with its end facing away from the locking bar 13 in the housing 1 and engages over a provided with corrugated unevenness 15 portion of the locking bolt 13.
  • An electronic control unit 16 receives the signals of the code receiver 9, 10 and the piezoelectric element 14 and controls the Actuator 11 on.
  • a battery 17 is disposed in the housing 1.
  • a slider 21 for transmitting an axial movement of an inserted into one of the closing channels 4, 5 key is arranged in the region of the locking bolt 13 ramps 18, which face a designed as a ball displacement element 19.
  • the locking bar 13 In the illustrated basic position of the locking bar 13 is in the range of movement of the core 2 and thus blocks its movement.
  • the actuator 11 and the control electronics 16 are arranged in a pocket 20 of the housing.
  • the locking bolt 13 is guided longitudinally displaceable in a stepped bore 22.
  • the slider 21 Upon insertion of the key into one of the closing channels 4, 5, the slider 21 is moved and pushes with the ramps 18, the displacement element 19 down. In this case, the locking bar 13 is also pressed down until it comes out of the range of movement of the core 2. For clarity, the movements of the slider 21 and the locking bar 13 in the drawing are indicated by arrows.
  • the code receiver 9, 10 detect signals from transponders of the key and These lead to the control electronics 16.
  • the control electronics 16 determines from the signals of the transponder, whether the key is entitled to unlock the lock cylinder. In the presence of an authorization controls the control electronics 16, the piezoelectric element 14 of the actuator 11, whereby the actuator 11 is pressed against the locking bar 13.
  • the locking bar 13 is held in its position outside the range of motion of the core 2.
  • the drive of the piezoelectric element 14 of the actuator 11 is omitted or this is driven in the reverse manner, so that the actuator 11 moves away from the locking bar 13.
  • the locking bar 13 is pressed by the force of the locking spring 12 back toward the core 2.
  • FIG. 2 shows the lock cylinder FIG. 1 in a sectional view along the line II - II.
  • the movements of the actuator 11 are marked with arrows.
  • the actuator 11 Upon actuation of the piezoelectric element 14, the actuator 11 is pressed against the locking bolt 13 and holds it in a force-fitting manner in its position outside the range of movement of the core 1.
  • a frictional connection between the actuator 11 and the locking bolt 13 is no longer sufficient to hold it against the force of the locking spring 12.
  • the locking bolt 13 is pressed into pockets 23, 24 arranged next to the displacement element 19. This blocks further movement of the core 2.
  • the unevenness 15 of the corrugated portion causes the piezoelectric element 14 is slightly moved.
  • a movement of the piezoelectric element 14 leads to an electrical signal which is received by the control electronics 16.
  • the control electronics 16 is activated by this signal and switches the code receiver 9, 10 to readiness for reception. This leads to a particularly low power consumption of the control electronics 16.
  • FIG. 2 shows FIG. 2 in that the pretensioning of the locking bolt 13 against the actuator 11 and the prestressing of the locking spring 12 are adjustable by means of adjusting elements 25, 26.
  • the adjusting elements 25, 26 are designed here as stud bolts.
  • FIG. 3 shows a further embodiment of the lock cylinder in cross section through a locking mechanism 27, which is different from those of FIGS. 1 and 2 especially differs in that an unevenness 28 of a locking bar 29 is designed spherical. Furthermore, an adjusting element 30 for adjusting the biasing force of the locking bar 29 acting on the locking spring 31 is formed as pressed into the stepped bore 22 ball.
  • a core 32 of the lock cylinder has a groove 33 arranged between two pockets 33 for receiving the free end of the locking bolt 29. Upon an initial rotation of the core 32, the locking bar 29 is pushed out of the range of movement of the core 32 and moves the piezoelectric element 14, which, as in the embodiment of the lock cylinder after the FIGS. 1 and 2 a signal to activate the control electronics 16 supplies.
  • a failure to control the actuator 11 causes the locking bar 29 passes in a further rotation in the pockets 33 of the core 32 and blocks its further movement.
  • the function of the locking mechanism 27 is designed according to the embodiments of the FIGS. 1 and 2 described.
  • the actuator 11 has a friction lining 35.

Abstract

Blocking mechanism for selectively blocking or releasing a core (2) movably arranged in a housing (1) comprises a locking bolt (13) guided in the movement region of the core, a locking spring (12) for pre-tensioning the locking bolt in the direction blocking the core, an actuator (11) for holding the locking bolt, and an electronic control device for controlling the actuator. The actuator is formed at least partly as a piezo bending element or a magnetostrictive element. king the movement of the core. The actuator is fixed in the housing with its end facing away from the locking bolt. The actuator is designed for holding the locking bolt by clamping in the position releasing the core and for releasing the movement of the locking bolt in the position bloc

Description

Die Erfindung betrifft einen Schließzylinder mit einem Sperrmechanismus zum wahlweisen Blockieren oder Freigeben eines in einem Gehäuse angeordneten beweglichen Kerns, mit einem in den Bewegungsbereich des Kerns geführten Sperrriegel, mit einer zur Vorspannung des Sperrriegels in die den Kern blockierende Richtung vorgesehenen Sperrfeder, mit einem Aktor zur Halterung des Sperrriegels, wobei die Bewegungsrichtungen des Sperrriegels und des Aktors im Wesentlichen quer zueinander verlaufen, und mit einer Steuerelektronik zur Ansteuerung des Aktors, wobei der Aktor mit seinem dem Sperrriegel abgewandten Ende in dem Gehäuse befestigt ist und der Aktor zur Halterung des Sperrriegels durch Festklemmen in der die Bewegung des Kerns freigebenden Stellung und zur Freigabe der Bewegung des Sperrriegels in die die Bewegung des Kerns blockierende Stellung ausgebildet ist.The invention relates to a lock cylinder with a locking mechanism for selectively blocking or releasing a housing arranged in a movable core, with a guided in the range of movement of the core locking bar, with a provided for biasing the locking bar in the core blocking direction locking spring, with an actuator for Holder of the locking bolt, wherein the directions of movement of the locking bolt and the actuator are substantially transverse to each other, and with control electronics for controlling the actuator, wherein the actuator is fixed with its locking bar remote end in the housing and the actuator for holding the locking bolt by clamping in which the movement of the core releasing position and for releasing the movement of the locking bar is formed in the movement of the core blocking position.

Aus der EP 0 668 422 A1 ist ein Sperrmechanismus bekannt geworden, bei dem in der freigebenden Stellung des Kerns ein Blockierelement von einem Elektromagneten in einem Gehäuse gehalten ist. Das Blockierelement ist in Richtung des Kerns vorgespannt. Der Elektromagnet bewegt einen Stift, der in eine Ringnut des Blockierelementes eindringt.From the EP 0 668 422 A1 a locking mechanism has become known in which in the releasing position of the core, a blocking element is held by an electromagnet in a housing. The blocking element is biased in the direction of the core. The electromagnet moves a pin which penetrates into an annular groove of the blocking element.

Ein solcher Schließzylinder mit einem Sperrmechanismus ist beispielsweise aus der DE 32 08 818 C2 bekannt. Hierbei ist der Sperrriegel stiftförmig gestaltet und ragt in schräg zur Mantelfläche auslaufende Kalotten des Kerns hinein. Eine Lagerachse des Aktors und der Sperrriegel sind parallel angeordnet, so dass bei einer Ansteuerung des piezoelektrischen Elements der Aktor in eine Sperrausnehmung des Sperrriegels eingedrückt wird. Eine Rückholfeder zieht den Aktor wieder aus der Ausnehmung heraus. Zum Blockieren der Bewegung des Kerns muss das piezoelektrische Element permanent angesteuert werden, um den Aktor in der Sperrausnehmung des Sperrriegels zu halten. Bei einer vorgesehenen Freigabe des Sperrmechanismus unterbleibt die Ansteuerung, so dass der Aktor von der Rückholfeder aus der Sperrausnehmung des Sperrriegels herausbewegt wird. In einer alternativen Ausführungsform ist das piezoelektrische Element der Sperrfeder gegenüberstehend angeordnet und bewegt damit eine bauliche Einheit aus Aktor und Sperrriegel gegen die Kraft der Sperrfeder.Such a lock cylinder with a locking mechanism is for example from the DE 32 08 818 C2 known. in this connection the locking bar is designed pin-shaped and protrudes in obliquely to the lateral surface expiring domes of the core. A bearing axis of the actuator and the locking bolt are arranged in parallel, so that when driving the piezoelectric element, the actuator is pressed into a locking recess of the locking bolt. A return spring pulls the actuator back out of the recess. To block the movement of the core, the piezoelectric element must be permanently driven to hold the actuator in the locking recess of the locking bar. In an envisaged release of the locking mechanism is omitted, the control, so that the actuator is moved out of the return spring from the locking recess of the locking bolt. In an alternative embodiment, the piezoelectric element of the locking spring is arranged opposite and thus moves a structural unit of actuator and locking bolt against the force of the locking spring.

Nachteilig bei dem bekannten Sperrmechanismus ist, dass der Aktor entweder der Sperrfeder oder einer eigenen Rückholfeder gegenüberstehend angeordnet ist, so dass bei einer Freigabe der Bewegung des Kerns der Aktor gegen die Kraft zumindest einer Feder bewegt werden muss. Dies führt zu einem hohen Energieverbrauch des Sperrmechanismus. Weiterhin erfordert die ständige Bereitschaft der Steuerelektronik und eine ständige Ansteuerung des piezoelektrischen Elements einen sehr hohen Energieverbrauch. Da solche Sperrmechanismen häufig in Eingangstüren von Gewerbe- oder Wohnräumen eingesetzt werden und eine längere Zeitspanne ohne Stromzufuhr funktionstüchtig sein sollen, ist ein hoher Energieverbrauch jedoch sehr störend.A disadvantage of the known locking mechanism, that the actuator is arranged either opposite to the locking spring or its own return spring, so that when releasing the movement of the core of the actuator against the force of at least one spring must be moved. This leads to a high energy consumption of the locking mechanism. Furthermore, the constant readiness of the control electronics and a constant control of the piezoelectric element requires a very high energy consumption. Since such locking mechanisms are often used in front doors of commercial or residential areas and a longer period without power should be functional, high energy consumption is very disturbing.

Weiterhin ist aus der DE 196 17 151 A1 eine Zuhalteeinrichtung bekannt, bei der ein Schließblech oder ein Riegel den Aktor aufweist. Der Aktor kann beispielsweise ein piezoelektrisches Element, einen magnetostriktiven Aktor oder einen Shape-Memory-Aktor aufweisen und drückt einen Hebel gegen die Kraft einer Feder gegen ein Profil. Auch bei dieser Zuhalteeinrichtung führt die Bewegung des Aktors gegen die Kraft der Feder zu einer sehr hohen Stromaufnahme.Furthermore, from the DE 196 17 151 A1 a locking device is known in which a strike plate or a bolt has the actuator. The actuator may, for example, a piezoelectric element, a magnetostrictive actuator or a shape memory actuator and pushes a lever against the force of a spring against a profile. Even with this locking device, the movement of the actuator against the force of the spring leads to a very high power consumption.

Der Erfindung liegt das Problem zugrunde, einen Schließzylinder mit einem Sperrmechanismus der eingangs genannten Art so zu gestalten, dass er einen besonders geringen Energieverbrauch aufweist.The invention is based on the problem of designing a lock cylinder with a locking mechanism of the type mentioned above so that it has a particularly low energy consumption.

Dieses Problem wird erfindungsgemäß dadurch gelöst, dass der Aktor zumindest bereichsweise als Piezobieger oder als magnetostriktives Element ausgebildet ist und dass der Sperrriegel beim Einführen eines Schlüssels in einen Schließkanal oder beim anfänglichen Drehen des Kerns verlagerbar ist und eine in den Bewegungsbereich des Aktors ragende Unebenheit zur Bewegung des Aktors aufweist, dass der Aktor ein bei seiner Bewegung einen Impuls erzeugendes, vorzugsweise piezoelektrisches Element hat und dass die Steuerelektronik durch den durch die Bewegung des Aktors erzeugten Impuls aktivierbar ist.This problem is inventively achieved in that the actuator is at least partially formed as a piezobender or magnetostrictive element and that the locking bolt during insertion of a key in a closing channel or the initial rotation of the core is displaced and projecting into the range of motion of the actuator unevenness to move of the actuator, that the actuator has a pulse generating during its movement, preferably piezoelectric element and that the control electronics can be activated by the pulse generated by the movement of the actuator.

Durch diese Gestaltung des erfindungsgemäßen Schließzylinders kann sich der Aktor frei und damit ohne Behinderung einer Feder bewegen. Der Energiebedarf zur Bewegung des Aktors ist daher besonders gering. Weiterhin wird dank der Erfindung der Aktor nur dann angesteuert, wenn eine Freigabe des Sperrmechanismus erfolgen soll. Da der Kern in der Regel die überwiegende Zeit in der blockierten Stellung verbleiben soll, führt dies zu einer starken Verringerung des Energiebedarfs. Auf die auf dem Sperrriegel angeordnete Sperrausnehmung lässt sich verzichten, da der Sperrriegel durch Klemmkräfte gehalten wird. Hierdurch wird der Weg, den der Aktor zwischen der die Bewegung des Kerns sperrenden Stellung und der die Bewegung des Kerns freigebenden Stellung zurücklegen muss, besonders klein gehalten. Dies führt zu einer weiteren Verringerung des Energiebedarfs des Aktors. Die Einklemmung des Sperrriegels durch den Aktor in die die Bewegung des Kerns freigebende Stellung führt zudem zu sehr geringen Haltekräften des Sperrriegels. Vorzugsweise wird der Sperrriegel zwischen einem einzigen Aktor und dem Gehäuse eingeklemmt. Durch diese erfindungsgemäße Gestaltung wird ein Impuls des Elements des Aktors genutzt, um die Steuerelektronik von einem Zustand ohne oder mit sehr geringem Stromverbrauch in einen Zustand zu schalten, in dem eine Schließberechtigung des in den Schließkanal eingeführten Schlüssels erfasst wird. Der Einsatz des piezoelektrischen Elements hat den Vorteil, dass der Aktor einen besonders geringen Strombedarf hat und kostengünstig herstellbar ist.By this design of the lock cylinder according to the invention, the actuator can move freely and thus without obstruction of a spring. The energy required to move the actuator is therefore particularly low. Furthermore, thanks to the invention, the actuator is only activated when a release of the locking mechanism is to take place. Because the nucleus is usually blocked in the majority of the time Position remains, this leads to a strong reduction in energy requirements. On the arranged on the locking bar locking recess can be omitted, since the locking bar is held by clamping forces. In this way, the path that the actuator must travel between the position blocking the movement of the core and the position which releases the movement of the core is kept particularly small. This leads to a further reduction in the energy requirement of the actuator. The entrapment of the locking bolt by the actuator in the movement of the core releasing position also leads to very low holding forces of the locking bolt. Preferably, the locking bar is clamped between a single actuator and the housing. By this design according to the invention, a pulse of the element of the actuator is used to switch the control electronics from a state without or with very low power consumption in a state in which a locking authorization of the inserted into the lock channel key is detected. The use of the piezoelectric element has the advantage that the actuator has a particularly low power consumption and is inexpensive to produce.

Der erfindungsgemäße Schließzylinder erfordert einen besonders geringen Bauraum, wenn der Aktor plattenförmig gestaltet und mit seinem von dem Sperrriegel abgewandten Ende in dem Gehäuse befestigt ist und wenn ein freies Ende des Aktors gegen den Sperrriegel in seiner die Bewegung des Kerns freigebenden Stellung ausgerichtet ist. Hierdurch lässt sich der Sperrmechanismus besonders einfach in einem Profilschließzylinder anordnen.The locking cylinder according to the invention requires a particularly small space when the actuator is plate-shaped and fixed with its remote from the locking latch end in the housing and when a free end of the actuator is aligned against the locking bar in its movement of the core releasing position. As a result, the locking mechanism can be particularly easily arranged in a profile lock cylinder.

Zur Verringerung der Anzahl der Bauteile des erfindungsgemäßen Schließzylinders trägt es bei, wenn das piezoelektrische Element plattenförmig gestaltet ist und im Wesentlichen den Aktor bildet.To reduce the number of components of the lock cylinder according to the invention, it contributes, if the piezoelectric Element is designed plate-shaped and essentially forms the actuator.

Ein Klemmen des Sperrriegels oder dessen Verhaken mit dem Aktor lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach vermeiden, wenn die Steuerelektronik bei einer vorgesehenen Blockierung des Kerns zur umgekehrten Ansteuerung des Aktors zur Freigabe der Bewegung des Sperrriegels ausgebildet ist.Clamping the locking bolt or its entanglement with the actuator can be easily avoided according to another advantageous embodiment of the invention, when the control electronics is formed at an intended blocking of the core for reverse control of the actuator to release the movement of the locking bolt.

Die auf dem Sperrriegel angeordneten Unebenheiten erfordern einen besonders geringen konstruktiven Aufwand, wenn die Mantelfläche des Sperrriegels bauchig oder gewellt ist.The bumps arranged on the locking bar require a particularly low design effort, if the lateral surface of the locking bolt is bulbous or wavy.

Die zum Haltern des Sperrriegels erforderliche Klemmkraft lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach einstellen, wenn auf der dem Aktor gegenüberliegenden Seite des Sperrriegels ein Stellelement zur Einstellung der Position des Sperrriegels gegenüber dem Aktor angeordnet ist.The clamping force required to hold the locking bolt can be easily adjusted according to another advantageous embodiment of the invention, when an actuator for adjusting the position of the locking bolt relative to the actuator is arranged on the opposite side of the actuator of the locking bolt.

Eine zuverlässige Verriegelung oder Freigabe des erfindungsgemäßen Schließzylinders lässt sich einfach sicherstellen, wenn die Sperrfeder ein Stellelement zur Einstellung der Vorspannkraft des Sperrriegels hat. Vorzugsweise ist das Stellelement als in einen den Sperrriegel aufnehmenden Kanal eingedrehte Madenschraube oder eine darin eingepresste Kugel ausgebildet.A reliable locking or release of the lock cylinder according to the invention can be easily ensured if the locking spring has an adjusting element for adjusting the biasing force of the locking bolt. Preferably, the adjusting element is formed as screwed into a receiving the locking bolt channel grub screw or a ball pressed therein.

Hohe Haltekräfte des Sperrriegels bei einem besonders geringen Energiebedarf des Aktors lassen sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach erzeugen, wenn zumindest ein Reibbelag an der Mantelfläche des Sperrriegels und/oder des Aktors und/oder einer Führung des Sperrriegels vorgesehen ist. Der Reibbelag ist vorzugsweise als Beschichtung des entsprechenden Bauteils ausgebildet.High holding forces of the locking bolt with a particularly low energy consumption of the actuator can be easily generated according to another advantageous embodiment of the invention, if at least one friction lining on the lateral surface the locking bolt and / or the actuator and / or a guide of the locking bolt is provided. The friction lining is preferably formed as a coating of the corresponding component.

Die Montage des erfindungsgemäßen Schließzylinders gestaltet sich besonders einfach, wenn das Gehäuse eine in eine Stufenbohrung übergehende Tasche aufweist und wenn in der Stufenbohrung der Sperrriegel geführt und in der Tasche der Aktor angeordnet ist. Durch diese Gestaltung kann zudem der Sperrriegel durch einen Absatz der Stufenbohrung vor einem Herausfallen gesichert werden.The mounting of the lock cylinder according to the invention is particularly simple if the housing has a transition into a stepped bore pocket and if guided in the stepped bore of the locking bolt and is arranged in the pocket of the actuator. By this design also the locking bolt can be secured by a shoulder of the stepped bore from falling out.

Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips sind zwei davon in der Zeichnung dargestellt und werden nachfolgend beschrieben. Diese zeigt in

Fig.1
einen Längsschnitt durch einen erfindungsgemäßen Schließzylinder mit einem Sperrmechanismus,
Fig.2
einen vergrößerten Querschnitt durch den Schließzylinder aus Figur 1 entlang der Linie II - II,
Fig.3
einen erfindungsgemäßen Schließzylinder im Querschnitt in einer weiteren Ausführungsform des Sperrmechanismus.
The invention allows numerous embodiments. To further clarify its basic principle, two of them are shown in the drawing and will be described below. This shows in
Fig.1
a longitudinal section through a lock cylinder according to the invention with a locking mechanism,
Fig.2
an enlarged cross section through the lock cylinder FIG. 1 along the line II - II,
Figure 3
a lock cylinder according to the invention in cross section in a further embodiment of the locking mechanism.

Figur 1 zeigt einen von zwei Seiten entriegelbaren Schließzylinder mit einem Gehäuse 1 und mit einem darin drehbar angeordneten Kern 2. Der Kern 2 hat in seinem mittleren Bereich einen Schließbart 3 und in seinen Enden jeweils einen Schließkanal 4, 5 zum Einführen eines nicht dargestellten Schlüssels. Die Schließkanäle 4, 5 weisen einen runden Querschnitt auf. Zur Übertragung einer Drehbewegung des Schlüssels auf den Kern 2 sind an den Stirnseiten des Kerns 2 jeweils Mitnehmer 6, 7 angeordnet. Die Mitnehmer 6, 7 dienen zur Erzeugung eines Formschlusses mit einer ebenfalls nicht dargestellten Reide des Schlüssels. Der Schließzylinder hat einen elektronisch aktivierbaren Sperrmechanismus 8 mit jeweils nahe der Stirnseiten des Gehäuses 1 angeordneten Codeempfängern 9, 10. Der Sperrmechanismus 8 hat einen Aktor 11 und einen von einer Sperrfeder 12 in Richtung des Kerns 2 vorgespannten Sperrriegel 13. Der Aktor 11 weist ein plattenförmiges piezoelektrisches Element 14 auf. Das piezoelektrische Element 14 ist mit seinem dem Sperrriegel 13 abgewandten Ende in dem Gehäuse 1 befestigt und übergreift einen mit gewellt ausgebildeten Unebenheiten 15 versehenen Abschnitt des Sperrriegels 13. Eine Steuerelektronik 16 empfängt die Signale der Codeempfänger 9, 10 und des piezoelektrischen Elements 14 und steuert den Aktor 11 an. Zur Stromversorgung der Steuerelektronik 16 und des Aktors 11 ist in dem Gehäuse 1 eine Batterie 17 angeordnet. In dem Kern 2 ist ein Schieber 21 zur Übertragung einer axialen Bewegung eines in einen der Schließkanäle 4, 5 eingeführten Schlüssels angeordnet. Der Schieber 21 weist im Bereich des Sperrriegels 13 Rampen 18 auf, welche einem als Kugel ausgebildeten Verdrängungselement 19 gegenüberstehen. In der eingezeichneten Grundstellung befindet sich der Sperrriegel 13 im Bewegungsbereich des Kerns 2 und blockiert damit dessen Bewegung. Der Aktor 11 und die Steuerelektronik 16 sind in einer Tasche 20 des Gehäuses angeordnet. Der Sperrriegel 13 ist längsverschieblich in einer Stufenbohrung 22 geführt. FIG. 1 shows a lock cylinder unlockable from two sides with a housing 1 and with a core 2 rotatably disposed therein. The core 2 has in its central region a lock bit 3 and in its ends in each case a closing channel 4, 5 for insertion of a key, not shown. The closing channels 4, 5 have a round cross-section. For transmitting a rotary movement of the key to the core 2 each driver 6, 7 are arranged on the end faces of the core 2. The drivers 6, 7 are used to produce a positive connection with a Reide also not shown the key. The lock cylinder has an electronically activated locking mechanism 8, each near the end faces The locking mechanism 8 has an actuator 11 and one of a locking spring 12 in the direction of the core 2 biased locking bar 13. The actuator 11 has a plate-shaped piezoelectric element 14. The piezoelectric element 14 is fastened with its end facing away from the locking bar 13 in the housing 1 and engages over a provided with corrugated unevenness 15 portion of the locking bolt 13. An electronic control unit 16 receives the signals of the code receiver 9, 10 and the piezoelectric element 14 and controls the Actuator 11 on. To power the control electronics 16 and the actuator 11, a battery 17 is disposed in the housing 1. In the core 2, a slider 21 for transmitting an axial movement of an inserted into one of the closing channels 4, 5 key is arranged. The slider 21 has in the region of the locking bolt 13 ramps 18, which face a designed as a ball displacement element 19. In the illustrated basic position of the locking bar 13 is in the range of movement of the core 2 and thus blocks its movement. The actuator 11 and the control electronics 16 are arranged in a pocket 20 of the housing. The locking bolt 13 is guided longitudinally displaceable in a stepped bore 22.

Bei einem Einführen des Schlüssels in einen der Schließkanäle 4, 5 wird der Schieber 21 bewegt und drückt mit den Rampen 18 das Verdrängungselement 19 nach unten. Dabei wird der Sperrriegel 13 ebenfalls nach unten gedrückt, bis er aus dem Bewegungsbereich des Kerns 2 herausgelangt. Zur Verdeutlichung sind die Bewegungen des Schiebers 21 und des Sperrriegels 13 in der Zeichnung mit Pfeilen gekennzeichnet. Mit dem Einführen des Schlüssels in einen der Schließkanäle 4, 5 erfassen die Codeempfänger 9, 10 Signale von Transpondern des Schlüssels und leiten diese zu der Steuerelektronik 16. Die Steuerelektronik 16 ermittelt aus den Signalen des Transponders, ob der Schlüssel berechtigt ist, den Schließzylinder zu entriegeln. Bei Vorliegen einer Berechtigung steuert die Steuerelektronik 16 das piezoelektrische Element 14 des Aktors 11 an, wodurch der Aktor 11 gegen den Sperrriegel 13 gedrückt wird. Hierdurch wird der Sperrriegel 13 in seiner außerhalb des Bewegungsbereichs des Kerns 2 befindlichen Lage gehalten. Bei fehlender Berechtigung unterbleibt die Ansteuerung des piezoelektrischen Elements 14 des Aktors 11 oder dieser wird in umgekehrter Weise angesteuert, so dass sich der Aktor 11 von dem Sperrriegel 13 wegbewegt. Damit wird der Sperrriegel 13 von der Kraft der Sperrfeder 12 wieder in Richtung Kern 2 gedrückt.Upon insertion of the key into one of the closing channels 4, 5, the slider 21 is moved and pushes with the ramps 18, the displacement element 19 down. In this case, the locking bar 13 is also pressed down until it comes out of the range of movement of the core 2. For clarity, the movements of the slider 21 and the locking bar 13 in the drawing are indicated by arrows. With the introduction of the key in one of the closing channels 4, 5, the code receiver 9, 10 detect signals from transponders of the key and These lead to the control electronics 16. The control electronics 16 determines from the signals of the transponder, whether the key is entitled to unlock the lock cylinder. In the presence of an authorization controls the control electronics 16, the piezoelectric element 14 of the actuator 11, whereby the actuator 11 is pressed against the locking bar 13. As a result, the locking bar 13 is held in its position outside the range of motion of the core 2. In the absence of authorization, the drive of the piezoelectric element 14 of the actuator 11 is omitted or this is driven in the reverse manner, so that the actuator 11 moves away from the locking bar 13. Thus, the locking bar 13 is pressed by the force of the locking spring 12 back toward the core 2.

Figur 2 zeigt den Schließzylinder aus Figur 1 in einer Schnittdarstellung entlang der Linie II - II. Hierbei sind die Bewegungen des Aktors 11 mit Pfeilen gekennzeichnet. Bei einer Ansteuerung des piezoelektrischen Elements 14 wird der Aktor 11 gegen den Sperrriegel 13 gedrückt und hält diesen kraftschlüssig in seiner außerhalb des Bewegungsbereichs des Kerns 1 befindlichen Lage. Bei einer ausbleibenden Ansteuerung des piezoelektrischen Elements 14 reicht ein Kraftschluss zwischen dem Aktor 11 und dem Sperrriegel 13 nicht mehr aus, um diesen gegen die Kraft der Sperrfeder 12 zu halten. Dies führt dazu, dass der Sperrriegel 13 bei einem Drehen des Kerns 2 durch die Kraft der Sperrfeder 12 in neben dem Verdrängungselement 19 angeordnete Taschen 23, 24 gedrückt wird. Damit wird eine weitere Bewegung des Kerns 2 blockiert. FIG. 2 shows the lock cylinder FIG. 1 in a sectional view along the line II - II. Here, the movements of the actuator 11 are marked with arrows. Upon actuation of the piezoelectric element 14, the actuator 11 is pressed against the locking bolt 13 and holds it in a force-fitting manner in its position outside the range of movement of the core 1. In the absence of actuation of the piezoelectric element 14, a frictional connection between the actuator 11 and the locking bolt 13 is no longer sufficient to hold it against the force of the locking spring 12. As a result, when the core 2 is rotated by the force of the locking spring 12, the locking bolt 13 is pressed into pockets 23, 24 arranged next to the displacement element 19. This blocks further movement of the core 2.

Wenn der Schlüssel in den Schließkanal 4, 5 eingeführt und damit der Sperrriegel 13 aus dem Bewegungsbereich des Kerns 2 herausbewegt wird, führt die Unebenheit 15 des gewellten Abschnitts dazu, dass das piezoelektrische Element 14 geringfügig bewegt wird. Eine Bewegung des piezoelektrischen Elements 14 führt zu einem elektrischen Signal, welches von der Steuerelektronik 16 empfangen wird. Die Steuerelektronik 16 wird durch dieses Signal aktiviert und schaltet die Codeempfänger 9, 10 auf Empfangsbereitschaft. Dies führt zu einem besonders geringen Energieverbrauch der Steuerelektronik 16. Weiterhin zeigt Figur 2, dass die Vorspannung des Sperrriegels 13 gegen den Aktor 11 und die Vorspannung der Sperrfeder 12 mittels Stellelementen 25, 26 einstellbar sind. Die Stellelemente 25, 26 sind hier als Stiftschrauben ausgebildet.When the key is inserted into the closing channel 4, 5 and thus the locking bar 13 is moved out of the range of motion of the core 2, the unevenness 15 of the corrugated portion causes the piezoelectric element 14 is slightly moved. A movement of the piezoelectric element 14 leads to an electrical signal which is received by the control electronics 16. The control electronics 16 is activated by this signal and switches the code receiver 9, 10 to readiness for reception. This leads to a particularly low power consumption of the control electronics 16. Further shows FIG. 2 in that the pretensioning of the locking bolt 13 against the actuator 11 and the prestressing of the locking spring 12 are adjustable by means of adjusting elements 25, 26. The adjusting elements 25, 26 are designed here as stud bolts.

Figur 3 zeigt eine weitere Ausführungsform des Schließzylinders im Querschnitt durch einen Sperrmechanismus 27, welche sich von denen aus den Figuren 1 und 2 vor allem dadurch unterscheidet, dass eine Unebenheit 28 eines Sperrriegels 29 ballig gestaltet ist. Weiterhin ist ein Stellelement 30 zur Einstellung der Vorspannkraft der auf den Sperrriegel 29 einwirkenden Sperrfeder 31 als in die Stufenbohrung 22 eingepresste Kugel ausgebildet. Ein Kern 32 des Schließzylinders weist eine zwischen zwei Taschen 33 angeordnete Hohlkehle 34 zur Aufnahme des freien Endes des Sperrriegels 29 auf. Bei einem anfänglichen Drehen des Kerns 32 wird der Sperrriegel 29 aus dem Bewegungsbereich des Kerns 32 herausgedrückt und bewegt das piezoelektrische Element 14, welches wie zu der Ausführungsform des Schließzylinders nach den Figuren 1 und 2 ein Signal zur Aktivierung der Steuerelektronik 16 liefert. Eine ausbleibende Ansteuerung des Aktors 11 führt dazu, dass der Sperrriegel 29 bei einem weiteren Drehen in die Taschen 33 des Kerns 32 gelangt und dessen Weiterbewegung blockiert. Die Funktion des Sperrmechanismus 27 gestaltet sich wie zu den Ausführungsformen nach den Figuren 1 und 2 beschrieben. Der Aktor 11 weist einen Reibbelag 35 auf. FIG. 3 shows a further embodiment of the lock cylinder in cross section through a locking mechanism 27, which is different from those of FIGS. 1 and 2 especially differs in that an unevenness 28 of a locking bar 29 is designed spherical. Furthermore, an adjusting element 30 for adjusting the biasing force of the locking bar 29 acting on the locking spring 31 is formed as pressed into the stepped bore 22 ball. A core 32 of the lock cylinder has a groove 33 arranged between two pockets 33 for receiving the free end of the locking bolt 29. Upon an initial rotation of the core 32, the locking bar 29 is pushed out of the range of movement of the core 32 and moves the piezoelectric element 14, which, as in the embodiment of the lock cylinder after the FIGS. 1 and 2 a signal to activate the control electronics 16 supplies. A failure to control the actuator 11 causes the locking bar 29 passes in a further rotation in the pockets 33 of the core 32 and blocks its further movement. The function of the locking mechanism 27 is designed according to the embodiments of the FIGS. 1 and 2 described. The actuator 11 has a friction lining 35.

Claims (9)

  1. Lock cylinder comprising a locking mechanism (8) for selectively blocking or releasing a core (2) arranged movably in a housing (1), comprising a locking bolt (13, 29) which is guided into the movement region of the core (2), comprising a locking spring (12) provided for biasing the locking bolt (13, 29) in the direction blocking the core (2), comprising an actuator (11) for holding the locking bolt (13, 29), the directions of movement of the locking bolt (13, 29) and of the actuator (11) extending substantially perpendicular to one another, and comprising control electronics (16) for activating the actuator (11), the end of the actuator (11) remote from the locking bolt (13, 29) being fastened in the housing (1) and the actuator (11) being formed so as to hold the locking bolt (13, 29) by clamping in the position releasing the movement of the core (2) and to release the movement of the locking bolt (13, 29) into the position blocking the movement of the core (2), characterised in that the actuator (11) is formed at least in regions as a piezo bender or as a magnetostrictive member, and in that the locking bolt (13, 29) is displaceable upon the introduction of a key into a locking channel (4, 5) or upon the initial rotation of the core (32) and comprises an unevenness (15, 28) projecting into the movement region of the actuator (11) for moving the actuator (11), in that the actuator (11) has a preferably piezoelectric member (14) which generates a pulse when it moves, and in that the control electronics (16) can be activated by the pulse generated by the movement of the actuator (11).
  2. Lock cylinder comprising a locking mechanism according to claim 1, characterised in that the actuator (11) is plate-shaped and the end thereof remote from the locking bolt (13, 29) is fastened in the housing (1), and in that a free end of the actuator (11) is oriented against the locking bolt (13, 29) in the position thereof releasing the movement of the core (2, 32).
  3. Lock cylinder comprising a locking mechanism according to either claim 1 or claim 2, characterised in that the piezoelectric member (14) is plate-shaped and basically forms the actuator (11).
  4. Lock cylinder comprising a locking mechanism according to at least one of the preceding claims, characterised in that the control electronics (16) are formed for reverse activation and deflection of the actuator (11) to release the movement of the locking bolt (13, 29) when the core (2, 32) is blocked.
  5. Lock cylinder comprising a locking mechanism according to at least one of the preceding claims, characterised in that the lateral surface of the locking bolt (13, 29) is bulged or wavy.
  6. Lock cylinder comprising a locking mechanism according to at least one of the preceding claims, characterised in that there is an adjustment member (25) for adjusting the position of the locking bolt (13, 29) relative to the actuator (11).
  7. Lock cylinder comprising a locking mechanism according to at least one of the preceding claims, characterised in that the locking spring (12, 31) has an adjustment member (26, 30) for adjusting the biasing force of the locking bolt (13, 29).
  8. Lock cylinder comprising a locking mechanism according to at least one of the preceding claims, characterised in that at least one friction lining (35) is provided on the lateral surface of the locking bolt (13, 29) and/or of the actuator (11) and/or of a guide for the locking bolt (13, 29).
  9. Lock cylinder comprising a locking mechanism according to at least one of the preceding claims, characterised in that the housing (1) comprises a recess (20) transitioning into a stepped hole (22), and in that the locking bolt (13, 29) is guided in the stepped hole (22) and the actuator (11) is arranged in the recess (20).
EP03011871A 2002-07-10 2003-05-27 Cylinder lock with a blocking device Expired - Lifetime EP1380714B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200331797T SI1380714T1 (en) 2002-07-10 2003-05-27 Cylinder lock with a blocking device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10230953A DE10230953A1 (en) 2002-07-10 2002-07-10 Locking mechanism, especially for a lock cylinder
DE10230953 2002-07-10

Publications (3)

Publication Number Publication Date
EP1380714A2 EP1380714A2 (en) 2004-01-14
EP1380714A3 EP1380714A3 (en) 2006-09-06
EP1380714B1 true EP1380714B1 (en) 2010-02-10

Family

ID=29723810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03011871A Expired - Lifetime EP1380714B1 (en) 2002-07-10 2003-05-27 Cylinder lock with a blocking device

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EP (1) EP1380714B1 (en)
AT (1) ATE457400T1 (en)
DE (2) DE10230953A1 (en)
ES (1) ES2339930T3 (en)
SI (1) SI1380714T1 (en)

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Also Published As

Publication number Publication date
DE50312402D1 (en) 2010-03-25
EP1380714A2 (en) 2004-01-14
EP1380714A3 (en) 2006-09-06
ATE457400T1 (en) 2010-02-15
DE10230953A1 (en) 2004-01-22
ES2339930T3 (en) 2010-05-27
SI1380714T1 (en) 2010-06-30

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