EP1443162B1 - Lock cylinder - Google Patents

Abstract

A coupling structure (30) has a coupling link (CL) (50) to shift between a coupling position for the CL to interlink a shaft (18) and closing bolt toe (CBT) (32) with a positive fit in a direction of rotation and a uncoupling position, where the shaft and the CBT uncouple from each other in a direction of rotation. A drive mechanism (34) is set up to move a drive link (40) so as to shift the CL. An independent claim is also included for a closing system for a door fitted with a closing cylinder with a closing bolt toe and operating elements on the inner and outer sides of the door.

Description

The present invention relates to a lock cylinder, in particular profile cylinder, with a shaft, a substantially concentric with the shaft member and a coupling arrangement for coupling the shaft with the component, wherein the coupling arrangement has at least one coupling element between a coupling position in which the coupling element the shaft and the component in the rotational direction positively connects to each other, and a Entkuppelposition is displaceable, in which the shaft and the component are uncoupled in the rotational direction of each other, and having a drive which is adapted to move a drive member, thereby to the coupling element to offset, wherein on the drive member at least one permanent magnet is arranged, which is adapted to move the coupling member in the coupling position upon movement of the drive member.

Generally, the present invention relates to the field of lock cylinders, and more particularly to the field of electronic lock cylinders. In the field of lock cylinders, the profile cylinders are of particular economic importance. According to DIN 18251, a profile cylinder is a lock cylinder intended to be used interchangeably in locks arranged for this purpose, e.g. Mortise locks to DIN 18251.

A mortise lock according to this DIN standard has a latch and a latch. The trap is usually operated with a pusher, the latch is usually moved by means of the profile cylinder.

Conventional mechanical profile cylinders are key-operated and generally have a plurality of so-called pin tumblers.

For some years there is a trend towards so-called electronic locking cylinders, in which the task of the key is completely or partially fulfilled by an electronic chip. In this connection is generally referred to lock + fitting market, issue March 1996, pages 70-73.

In the case of the electronic locking cylinders, the mechanical actuation of the bolt at the beginning of its development continued with the key. Previously, however, in these systems the authorization to operate the bolt is checked via a "badge" chip. In this case, it is often a passive or active transponder, so a chip on which a special authorization code is stored, which is queried by the respective lock or cylinder. The polling can be done via contacts (e.g., magnetic stripe reader) or wirelessly (usually by radio).

In a next stage of development, the use of mechanical keys has been completely dispensed with. For example, in the DE 199 23 786 A1 describes a system in which a cam of the profile cylinder is rotatably connected via a hollow shaft with a door inside knob.

Another shaft extends from the door inside knob to a door outside knob. The outside door knob is freely rotatable and uncoupled from the cam. Only when the authorization of the user has been successfully confirmed, the hollow shaft is coupled to the through shaft to connect the outside door knob with the lock bit. The coupling arrangement provided for this purpose has an electromagnet, which acts as a rocker-mounted magnet armature. The armature is displaceable between a dome position and a Entkuppelposition.

At one off DE 42 34 321 A1 known lock cylinder of the aforementioned type, the coupling element is formed as a ball of ferromagnetic material which is arranged in a ball trap in a cylindrical member, and can be displaced by activation of an electromagnet, so that it engages in a receptacle of a rotatably mounted in the bolt , In the engaged position, the ball held by a permanent magnet arranged in the receptacle, so that the electromagnet can be switched off. To decouple the electromagnet is activated unpoped, so that the ball can be brought out of engagement with the bolt by the electromagnetic field and a permanent magnet associated therewith.

Out DE 100 65 155 A1 Another electronic lock cylinder is known which has a hollow shaft connected to a door outside knob and an inner shaft extending therein, which is connected to both the lock bit and with the door inside knob. For coupling the two shafts, a coupling arrangement is provided which has a means of a lifting magnet axially displaceable slide, which forms a drive member. In an axial movement of the slide radially aligned coupling pins are offset to the outside and engage in innenumfängliche recesses or openings in the hollow shaft. The inner circumferential recesses are delimited from each other by roof-like flanks which are capable of pushing the coupling pins radially inwardly in the disengaging position of the slider to disengage the hollow shaft and the inner shaft from each other.

From the EP 0 999 328 A1 Another electronic profile cylinder is known. The door-side knob is in turn rotatably connected via a hollow shaft with the lock bit. The outside door knob is connected to a further hollow shaft whose front side can be coupled by means of a connecting sleeve with the inside of the hollow shaft. This is done by a drive in the form of a solenoid.

From the DE 198 34 692 A1 Another electronic profile cylinder is known. A door-side knob is rotatably connected to the cam via a hollow shaft. The door outside knob is rotatably connected to an inner hollow shaft, which extends into the door inside knob. A coupling arrangement for coupling the two hollow shafts is provided in the interior of the door inside knob.

From the DE 198 24 713 A1 An electronic profile cylinder is also known. A door-side knob is rotatably connected to a hollow shaft, which extends to the cam. In the same way is a door outside pommel with a hollow shaft connected, which reaches up to the lock bit. On the cam a rocker is pivotally mounted as a magnet armature. A central hollow shaft passes through the profile cylinder and carries two magnetic coils in the area of the cam. By means of the magnet coil arrangement, the pivotable armature can either spend in a position in which the cam is connected to the door inside knob, or in another position in which it is connected to the outside door knob.

In general, one strives in the field of electronic profile cylinder to realize the simplest possible mechanical solutions. Furthermore, it is generally advantageous if a continuous shaft is present, so that electrical lines from the door inside knob to the outside door knob can be easily installed without having to provide, for example, sliding contacts, as for example in the profile cylinder EP 0 999 328 A1 necessary is.

Against the above background, the object of the present invention is to provide an improved lock cylinder.

This object is achieved according to the invention in the lock cylinder mentioned above in that on the coupling element at least one permanent magnet is arranged, which is adapted to move the coupling element during a movement of the drive member and that the drive member in the uncoupling the coupling element by means of a second Permanent magnets offset in the uncoupling position.

By this measure, a movement of the drive member can be implemented largely without friction in an offset of the coupling element. The necessary power transmission takes place through the magnetic field of the permanent magnet.

Another advantage is usually that the drive can operate independently of the positional state of the clutch assembly, that is, regardless of whether the coupling element is in the dome position or the uncoupling position.

It is particularly advantageous according to the invention, when the component is a cam or a housing of the profile cylinder.

This makes it possible to set up the clutch assembly so that the coupling element establishes a direct positive connection between the shaft and the cam. Thus, space and components can be saved. It is not necessary to nest several waves in one another.

Under a cam are present drivers of any shape to understand, including pinions, gears, cross bars, etc.

It is also of particular advantage if the shaft is a shaft passing through from one end of the lock cylinder to the other end. In this embodiment, the lock cylinder can be mechanically very simple and robust overall. It is not necessary to store several rotatable shafts in each other.

By the measure to couple a continuous shaft of the lock cylinder via the coupling element directly to the cam, a mechanically particularly simple and robust construction with few components is achieved. In particular, it is not necessary to store several rotatable shafts nested one inside the other. This also simplifies the through-connection between inside and outside. There are no sliding contacts necessary.

In a lock cylinder according to the present invention, it is particularly advantageous if the cam has a radial recess in which the coupling element is mounted radially displaceable.

As a result, the available space in the lock cylinder space is utilized optimally. The coupling element is in the decoupled state in the cam and in the coupling position produces a positive connection to the shaft, which is preferably formed continuously.

Overall, it is also advantageous if the drive member is designed as an axially movable slide. As a result, the drive can be designed structurally simple.

Furthermore, it is altogether advantageous if the drive is designed as an axial drive. An axial drive can structurally comparatively easily integrate into a generally elongated profile cylinder. It is particularly advantageous if the drive is designed as an electric solenoid.

According to an alternative embodiment, the drive is designed as an electromotive spindle drive.

In the embodiment of the invention, the first permanent magnet is used to move the coupling element to the coupling position and the second permanent magnet to decouple the coupling element. As a result, the dome position can be set up with little friction. It is also possible to move the drive member in the coupling position, without this directly leads to the fact that the coupling element is placed in the dome position. Rather, this can only take place when, for example, by a rotation of a knob, the coupling element can fall into an opening or the like. In this case, no constant supply of energy is necessary because the force is provided for coupling of the permanent magnet.

Thus, for example, in one embodiment, the coupling element may be mounted in a housing of the profile cylinder, so that the uncoupling position of the coupling member allows the shaft and a locking bit fixedly connected thereto to be freely movable. In this embodiment, the shaft is rotatably fixed in the dome position on the housing and locked the lock bit.

If, however, the shaft is freely rotatable in the uncoupling position and rotatably connected in the dome position with the cam, the second permanent magnet can also be used to actively reset the coupling element from the dome position in the Entkuppelposition. In this embodiment, it is particularly preferred if the first and the second permanent magnet on the drive member are set offset in the direction of movement. It is understood that the first and the second permanent magnet are installed reversed so that the first permanent magnet forces the coupling element into the coupling position and the second permanent magnet forces the coupling element into the uncoupling position.

According to a further, overall preferred embodiment, the shaft is designed as a hollow shaft and the drive member is movably mounted in the shaft.

In this way, the available space in the profile cylinder is utilized optimally. Due to the design as a hollow shaft, a direct coupling to the cam is also structurally simple to implement.

Further, it is advantageous if the coupling element is mounted radially displaceable. The radial displaceability of the coupling element is structurally simple to implement, especially when the coupling element is mounted in the cam or in the housing of the lock cylinder.

Furthermore, a positive connection between the shaft and the component or cam can be realized in a comparatively simple manner. Thus, it is of particular advantage if the coupling element engages in the coupling position in an opening in the shaft. Thus, a positive connection between the component and the shaft can be realized in a simple manner, namely by providing one or more openings in the shaft.

It is particularly advantageous, however, that a permanent magnet is provided on the drive member and a further permanent magnet on the coupling element, so that add the effects of the permanent magnets.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Fig. 1

eine schematische, teilweise geschnittene Seitenansicht einer erfindungsgemäßen Schließanordnung gemäß einem ersten Ausführungsbeispiel;

Fig. 2

einen Schließzylinder gemäß einer weiteren bevorzugten Ausführungsform der Erfindung in perspektivischer Explosionsdarstellung;

Fig. 3

den Schließzylinder der Fig. 2 in Explosionsdarstellung aus einer anderen Perspektive;

Fig. 4

eine perspektivische Darstellung eines Schiebers des Antriebs des Schließzylinders der Figuren 2 und 3;

Fig. 5

eine Schnittansicht durch den Schließzylinder der Figuren 2 und 3 in einer Entkuppelposition;

Fig. 6

eine der Fig. 5 entsprechende Darstellung des Schließzylinders in einer Kuppelposition;

Fig. 7

eine der Fig. 5 entsprechende Darstellung eines Schließzylinders mit einer abgewandelten Kupplungsanordnung;

Fig. 8

eine der Fig. 5 entsprechende Darstellung eines Schließzylinders mit einer weiteren abgewandelten Kupplungsanordnung;

Figuren 9a und 9b

eine schematische Darstellung einer Ausführungsform einer Kupplungsanordnung für einen Schließzylinder der nicht gemäß der beanspruchten Erfindung ist.

Figuren 10a und 10b

eine schematische Darstellung noch einer weiteren Ausführungsform einer Kupplungsanordnung für einen Schließzylinder, der nicht gemäß der beanspruchten Erfindung ist;

Fig. 11

eine perspektivische Darstellung einer alternativen Ausgestaltung eines Schiebers für den Schließzylinder der Figuren 2 und 3; und

Fig. 12

eine schematische Darstellung des Schiebers der Fig. 4 in einer abgewandelten Ausführungsform; und

Fig. 13

eine schematische Darstellung einer Abwandlung der Ausführungsform der Fig. 10.

Embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description. Show it:

Fig. 1

a schematic, partially sectioned side view of a closing arrangement according to the invention according to a first embodiment;

Fig. 2

a lock cylinder according to another preferred embodiment of the invention in an exploded perspective view;

Fig. 3

the lock cylinder the Fig. 2 in an exploded view from another perspective;

Fig. 4

a perspective view of a slider of the drive of the lock cylinder of Figures 2 and 3 ;

Fig. 5

a sectional view through the lock cylinder of Figures 2 and 3 in a uncoupling position;

Fig. 6

one of the Fig. 5 corresponding representation of the lock cylinder in a dome position;

Fig. 7

one of the Fig. 5 corresponding representation of a lock cylinder with a modified clutch assembly;

Fig. 8

one of the Fig. 5 corresponding representation of a lock cylinder with a further modified clutch assembly;

FIGS. 9a and 9b

a schematic representation of an embodiment of a clutch assembly for a lock cylinder is not according to the claimed invention.

Figures 10a and 10b

a schematic representation of yet another embodiment of a clutch assembly for a lock cylinder, which is not according to the claimed invention;

Fig. 11

a perspective view of an alternative embodiment of a slider for the lock cylinder of Figures 2 and 3 ; and

Fig. 12

a schematic representation of the slider of Fig. 4 in a modified embodiment; and

Fig. 13

a schematic representation of a modification of the embodiment of the Fig. 10 ,

A first embodiment of a closing arrangement according to the invention is shown in FIG Fig. 1 generally designated 10.

The locking assembly 10 has a lock cylinder 12 which is formed as a profile cylinder for a mortise lock S, which is installed in a door T.

An outside of the door is marked A, the inside with I.

The lock cylinder 12 has a housing 17 in which a shaft 18 is rotatably mounted along a longitudinal axis 19.

The shaft 18 is formed as a hollow shaft and is rotatably connected to both an inner knob 14 and an outer knob 16.

The lock cylinder 12 is designed as an electronic lock cylinder.

Inside the outer knob 16 is an antenna 20. The antenna 20 is connected via an antenna line 22 to a control device 24 which is arranged in the inner knob 14. The antenna line 22 extends through the hollow shaft 18 and may be formed without contact with the sliding contact. In other embodiments, the antenna may also be provided in the inner knob.

In the inner knob 14, a further antenna 20 'is provided in this embodiment, which is connected directly to the control device 24.

In an idle state, the shaft 18 is freely rotatably mounted in the housing 17 with the knobs 14, 16 fixed non-rotatably thereon. To a Knaufdrehung a To actuate latch of the lock S, the shaft 18 is to be coupled with a lock bit 32 of the lock cylinder 12.

Before actuation of the clutch assembly 30, however, it is checked in the control device 24 whether the person requesting access in each case is authorized or not.

The authorized persons each carry a transponder 26 which is in communication communication with the respective antenna 20 or 20 'via a radio link 28, provided that the person stands close enough to the respective knob 14 or 16.

An authorization code stored in the transponder 26 is read out via the antenna 20 or 20 'and forwarded to the control device 24. This checks the authorization code and controls when released the clutch assembly 30. If the controller 24 does not release the read authorization code, the clutch assembly 30 is not activated. The same applies if a person without transponder 26 rotates at one of the knobs 14 or 16.

The transponder 26 may be a passive transponder that inductively derives the energy for transmitting its authorization code from a read signal transmitted by the antenna 20 or 20 '.

However, more preferred are active transponder 26, which have their own power supply and work over longer distances.

Active transponders are often in a sleep mode for energy saving purposes. They can be awakened, for example, by an idle rotation on one of the knobs 14 or 16 takes place and then informs a non-illustrated magnetic switch, the controller 24. The control device 24 then sends a wake-up signal via the respective antenna 20 or 20 'to the transponder 26, which then fed from its own power supply sends its authorization code, which is received by the respective antenna 20 and 20' and passed on.

In other embodiments, an authorization code may be entered via electrical or magnetic contact (credit card with card reader) or keyboard etc.

In the prior art, a distinction is often made in such electronic lock cylinders between the outside A and the inside I. In many cases, the inner knob 14 is permanently rotatably connected to the cam 32.

On the other hand, in the present embodiment, another concept is pursued. In this concept, it is also usually necessary from the inside to carry an authorized transponder 26 for unlocking the lock S.

Furthermore, it is understood that the lock cylinder 12 is designed as a replacement cylinder for conventional mechanical profile cylinder, that is, a power source for supplying the control device 24 and a drive 34 to be described is housed, for example, in the outer knob 16 or the inner knob 14.

Since the locking assembly 10 is designed so that the actual operation of locking or unlocking the lock S by muscle power of the user takes place, namely by turning the respective knob 14 and 16, the energy consumption of the locking assembly 10 is so low that an operation with a single battery can be guaranteed for very long periods.

It is further understood that the lock S as a mortise lock may also have a case, which is optionally actuated by a door handle (not shown).

The clutch assembly 30 for coupling the cam 32 with the shaft 18 and for decoupling these components has an axial drive 34. The axial drive 34 is arranged substantially in the interior of the shaft 18 and has an electromagnetic lifting magnet 36. The solenoid 36 is connected via a rod 38 with a drive member in the form of a slider 40. The solenoid 36 is configured to move the slider 40 in the direction parallel to the axis 19, as shown schematically at 41.

In the illustrated embodiment, the slider has a first permanent magnet 42 and a second permanent magnet 44.

The permanent magnets 42, 44 are arranged offset in the direction parallel to the axis 19 and are fixed to the slider 40 with opposite polarity.

While the solenoid 36 is disposed within the shaft 18 in a region between the cam 32 and the outer knob 16 (or the inner knob 14), the slider 40 is generally disposed in the region of the cam 32.

The solenoid 36 is connected via a line 46 to the control device 24 and receives from this drive signals.

In Fig. 1 the slider 40 is shown in a uncoupling position in which the second permanent magnet 44, due to its magnetic field, ensures that the cam 32 is uncoupled from the shaft 18. If the solenoid 36 receives a suitable drive signal via the line 46, the slider 40 is set in a coupling position, in which the first permanent magnet 42 due to its magnetic field ensures that the cam 32 is rotatably coupled positively to the shaft 18.

For this purpose, a coupling member in the form of a driver 50 is mounted radially displaceably in the cam 32.

In the illustrated radial position of the coupling member 50, the coupling member 50 is completely received in the cam 32.

In the illustrated embodiment, a third permanent magnet 54 is provided in the coupling member 50. In the uncoupling position of the slider 40 shown, the north pole of the second permanent magnet 44 is opposite the north pole of the third permanent magnet 54, so that they repel each other. As a result, the coupling member 50 is pressed radially outward into the cam 32.

If the solenoid 36 receives a drive signal, the slider 40 is placed in the dome position, in which the first permanent magnet 42 facing the coupling member 50. In this case, the south pole of the first permanent magnet 42 attracts the north pole of the third permanent magnet 54, so that the coupling member 50 is attracted to the slider 40.

In the shaft 18, at least one opening 52 is provided into which the coupling member 50 falls due to the magnetic attraction forces as soon as the shaft 18 by turning on one of the knobs 14, 16 in the correct rotational position.

It is understood that instead of a single opening 52, a plurality of openings may be provided. Then, the angle is smaller by which the shaft 18 must be rotated until the coupling member 50 enters the dome position.

1. 1. Zum einen wird das Kuppelglied 50 mittels des ersten Permanentmagneten 42 aktiv in die Kuppelposition versetzt. Mittels des zweiten Permanentmagneten 44 wird das Kuppelglied 50 auch aktiv zurückgestellt, in die Entkuppelposition.
   Demzufolge nimmt das Kuppelglied 50 immer eine definierte Position ein, nämlich entweder die Kuppelposition oder die Entkuppelposition.
2. 2. Der Schieber 40 kann zu einem beliebigen Zeitpunkt von der Entkuppelstellung in die Kuppelstellung bewegt werden. Wenn der Hubmagnet 36 bspw. selbsthemmend ausgebildet ist, ist nach dieser Bewegung keine weitere Energiezufuhr zu dem Hubmagneten 36 notwendig. Durch die Wirkung der Permanentmagnete wird das Kuppelelement 50 dann ohne weiteres in die Öffnung 52, d.h. in die Kuppelposition versetzt, sobald die Öffnung 52 sich in der geeigneten Drehstellung befindet.
3. 3. Dadurch, dass die Kraft zum Bewegen des Kuppelgliedes 50 durch die Magnetfelder der Permanentmagnete hervorgerufen wird, kann der Hubmagnet 36 mit geringer Reibung und folglich geringer Energiezufuhr bewegt werden.
   Durch die Anordnung des Kuppelgliedes 50 in dem Schließbart 32 wird der in dem Schließzylinder 12 vorhandene Bauraum optimal ausgenutzt.
4. 4. Durch die Maßnahme, dass der Innenknauf 14 und der Außenknauf 16 über eine durchgehende Hohlwelle miteinander verbunden sind, ist die Durchkontaktierung zwischen Innenseite und Außenseite einfach zu realisieren. Dadurch, dass die Kupplungsanordnung 30 mit der Welle 18 mitdrehend ausgebildet sein kann, kann die Durchkontaktierung auch durch den Schieber 40 hindurch erfolgen, ohne dass Schleifkontakte oder Ähnliches vorgesehen werden müssen.

The clutch assembly 30 is advantageous for several reasons:

1. 1. On the one hand, the coupling element 50 is actively displaced into the coupling position by means of the first permanent magnet 42. By means of the second permanent magnet 44, the coupling element 50 is also actively reset, in the uncoupling position.
   As a result, the coupling element 50 always assumes a defined position, namely either the coupling position or the uncoupling position.
2. 2. The slider 40 can be moved at any time from the uncoupling position to the coupling position. If, for example, the lifting magnet 36 is self-locking, no further energy supply to the lifting magnet 36 is necessary after this movement. By the action of the permanent magnets, the coupling element 50 is then readily displaced into the opening 52, ie in the dome position, as soon as the opening 52 is in the appropriate rotational position.
3. 3. The fact that the force for moving the coupling element 50 is caused by the magnetic fields of the permanent magnets, the solenoid 36 can be moved with low friction and consequently low power supply.
   Due to the arrangement of the coupling element 50 in the cam 32 of the present in the lock cylinder 12 space is optimally utilized.
4. 4. By the measure that the inner knob 14 and the outer knob 16 are connected to each other via a continuous hollow shaft, the through-connection between the inside and outside is easy to implement. Characterized in that the coupling assembly 30 may be formed mitdrehend with the shaft 18, the via can also be done through the slider 40 through, without sliding contacts or the like must be provided.

It is understood that exactly the two permanent magnets 42 and 44 shown may be provided on the slider 40 or distributed in the circumferential direction a plurality of respectively a plurality of first permanent magnet 42 and second permanent magnet 44th This is especially true if the clutch assembly 30 with the Rotates shaft 18 and a plurality of openings 52 are provided in the shaft 18. Then, a first or a second permanent magnet 42, 44 should be provided per opening 52 in each case.

In general, the two permanent magnets 42, 44 can each be the same size. Alternatively, it is also possible that the permanent magnets 42, 44 are different in size or provide a different strong permanent magnetic field. It would be particularly preferred if the first, attracting permanent magnet 42 is dimensioned smaller than the second, repelling permanent magnet 44. According to another embodiment, the one permanent magnet could also be set back slightly in the radial direction to the same dimensioning a different magnetic field on the coupling element 50 exercise.

It is understood that instead of an electromagnetic solenoid 36, an electromotive spindle drive can be used to move the slider 40 axially.

For Durchkontaktieren between the inside I and outside A, a longitudinal groove can be provided in the shaft 18, in which an electrical line or a plurality of electrical lines are inserted.

In general, it is also possible to provide only a permanent magnet in the slider 40, which acts attractively. In this case, the soft magnetic material dome member 50 could be radially slidably supported in the cam 32 and biased in the opposite direction by elastic means (e.g., a spring).

According to a further alternative embodiment, only at the coupling element 50, a permanent magnet is present, which is biased by elastic means in the uncoupling position. In this case, the slider 40 would be made of a soft magnetic Material, so that the permanent magnet is attracted in the coupling element against the spring bias to the slider out.

According to a further embodiment, it is also conceivable to replace the clutch assembly 30 by a magnetic coil in the region of the locking bit 32, wherein the magnetic coil is adapted to move the coupling element 50 between the coupling position and the uncoupling position.

In general, it is of course also conceivable to provide instead of a continuous shaft 18, a shaft which is rotatably connected to the cam 32, and another shaft which is rotatably connected to the outer knob 16 and by means of the clutch assembly 30 with the cam 32 is coupled.

Also, the inside could be operated with a switch to obtain a transponderfreies closing.

• der Schließbart 32,
• die Welle 18,
• der Schieber 40 (genauer das Schiebergehäuse zum Aufnehmen der Permanentmagnete),
• bei einem elektromotorischen Antrieb dessen Spindel,
• ggf. eine Außenhülle des Kuppelgliedes um den Permanentmagneten 54 herum.

It is understood that the following components should be made of non-magnetic material:

• the cam 32,
• the wave 18,
• the slider 40 (more precisely, the slider housing for receiving the permanent magnets),
• in an electromotive drive whose spindle,
• possibly an outer shell of the coupling element around the permanent magnet 54 around.

In the Figures 2 and 3 Another embodiment of a lock cylinder 60 is shown, which is usable in a closing arrangement, which is equal to the locking assembly 10 of Fig. 1 is.

The lock cylinder 60 is structurally and functionally identical in many respects to the lock cylinder 12 of FIG Fig. 1 , The same elements are therefore provided with the same reference numerals. In the following, only the differences to the lock cylinder 12 will be discussed.

The shaft 18 has a radial bore 62, via which the solenoid 36 is fixable within the shaft 18, for example by means of a grub screw.

Further, the shaft 18 has three circumferentially equally spaced openings 52, which are each formed longitudinally in the circumferential direction. Between two of the openings 52, a further radial bore 64 is provided into which a pin (not shown) for longitudinal guidance of the slider 40 can be inserted. For this purpose, the slider 40 has a longitudinal groove 66 into which the pin is inserted. The longitudinal groove 66 serves as a guide and has a length such that the pin can be used as a stop for defined end positions of the slider 40.

In Fig. 2 Furthermore, it can be seen that in the slider three pairs of respective first and second permanent magnets 42, 44 corresponding to the openings 52 are provided.

The housing 17 has a radial slot 68 in the cylindrical part. In a corresponding manner, the shaft 18 has a radial groove 70

By means of a snap ring or the like, the shaft 18 can therefore be fixed axially to the housing 17 without restricting the rotational mobility.

On the housing 17, a bore 72 is also provided for a forend screw in a conventional manner.

The cam 32 has a radial bore 74 extending from the outer periphery of its nose to a central bore 76.

In the radial bore 74, the coupling element 50 is mounted radially movable.

It is understood that after insertion of the coupling member 50, a plug or the like may be provided to prevent the coupling member 50 from accidentally slipping out of the radial bore 74.

The permanent magnet 54 is inserted into a longitudinal bore of the coupling element 50, which is designed as a blind bore.

As a result, the permanent magnet 54 is prevented from being directly in contact with one of the permanent magnets 42 or 44 and the coupling member 50 is given higher stability.

It is understood that the coupling element 50 is closed in the blind bore as soon as the permanent magnet 54 is inserted.

The central bore 76, which is penetrated by the shaft 18 in the assembled state, has radial recesses 78 at its axial edge regions. These serve to rotatably support the cam 32 on two plain bearings 80, 82, which are inserted into corresponding radial recesses of the housing 17.

In Fig. 4 the slider 40 is shown in greater detail. It can be seen that the slider 40 is formed as a solid, non-magnetic element with a cylindrical shape. Into the slider 40, a plurality of radial bores 86 have been bored to receive the permanent magnets 42, 44 therein. Furthermore, the longitudinal groove 66 is milled.

Fig. 5 shows the lock cylinder 60 in a cross-sectional view in the uncoupling position.

It can be seen that the coupling element 50 is held in the uncoupling position due to the repulsive effect of the third permanent magnet 54 and one of the second permanent magnets 44. In Fig. 5 It is shown that the permanent magnets 42, 44, 54 may be provided with reversed polarities. So is the in Fig. 5 shown uncoupling position by the repulsive forces of two south poles, whereas in Fig. 1 and Fig. 4 done by north poles.

In the in Fig. 5 shown uncoupling position, the shaft 18 can rotate freely. In other words, twisting of one of the knobs 14, 16 does not lead to co-rotation of the lock bit 32. Consequently, the lock S can not be unlocked or locked.

Fig. 6 shows one of the Fig. 5 corresponding representation, wherein the slider 40 has been moved to the coupling position. As a result, the coupling element 50 has been attracted by one of the first permanent magnets 42 and engages positively in the opening 52 assigned to this permanent magnet 42.

Rotational movements 90 of the shaft 18 are consequently converted into rotational movements 92 of the locking bit 32.

It can be seen that the openings 52 in the circumferential direction each have a length 96 or U, which is greater than the outer diameter K of the coupling element. As a result, a reliable meshing of the coupling element 50 in the opening 52 can be achieved even with rapid rotation of the shaft 18.

Furthermore, the length 96 of the openings 52 is also greater than the diameter 94 or d of the first and second permanent magnets 42, 44th

The ratio of U / K should be in the range of 1.1 to 3.5, preferably in the range of 1.6 to 2.2, in order to ensure that on the one hand a secure meshing of the coupling element 50 in the openings 52 is possible and on the other hand, a secure interaction between the magnets 42, 44 and 54 occurs, which corresponds to the desired operation.

Due to the fact that the openings 52 are longer in the circumferential direction than the diameter K of the coupling element 50, moreover, when no force is exerted on the shaft 18, a magnetic return results. Because in this state, the permanent magnets 54, 42 try to approach axially even further, so that the coupling element 50 detaches from the flank of the opening 52 and centered within the opening 52. Consequently, situations are avoided in which the coupling element 50 frictionally adheres to a side flank of the opening 52, with a force that possibly exceeds the force of the permanent magnets for decoupling.

Accordingly, the special configuration of the circumferentially elongated openings 52 a secure decoupling can be achieved by the magnetic return.

In Fig. 5 It is also shown how the slider 40 is guided in the longitudinal direction by means of a pin 98 which is inserted into the radial bore 64 and the longitudinal groove 66.

In Fig. 7 a lock cylinder 60 'is shown in modified form.

The lock cylinder 60 'corresponds in its operation and structure to the lock cylinder 60 and the same elements are provided with the same reference numerals.

In the following, only the differences will be discussed.

In contrast to the lock cylinder 60, the slider 40 'has only first permanent magnets 42 and no second permanent magnets 44.

The return of the coupling element 50 'by means of an elastic device, in the illustrated embodiment, a return spring 100. Alternatively, a compression spring 100' is provided.

The advantage of this embodiment is the smaller number of permanent magnets. However, the permanent magnets must be in the coupling position (in Fig. 7 shown) constantly overcome the force of the return spring 100.

In Fig. 8 is another modified embodiment of a lock cylinder 60 "shown.

The basic structure corresponds to the lock cylinder 60 of FIGS. 2 to 6 ; however, the functionality is slightly different and will be explained below.

In the lock cylinder 60 ', the cam 104 is designed in a conventional manner as a solid component and rotatably fixed to the shaft 18. It contains no coupling element.

Instead, a coupling member 108 is mounted radially displaceably on the housing 106. The coupling element 108 is provided in a manner corresponding to the coupling element 50 with a third permanent magnet 110.

In the in Fig. 8 shown uncoupling position, the shaft 18 is freely rotatable together with the cam 104.

Rotational movements of the knobs 14, 16 consequently lead to unlocking or locking movements of the lock bit 104.

If the slider 40 "is moved to the other position, the coupling member 108 engages in one of the openings 52 and thus blocks the shaft 18 and the cam 104 against rotational movements.

As a result, the coupling position in the lock cylinder 60 "is the home position so that unauthorized persons can not operate the lock cylinder 60". Only when a corresponding release by means of an authorization code, the coupling member 108 is placed in the uncoupling position to unlock the shaft 18 and thus the cam 104.

In the FIGS. 9a and 9b another embodiment of a coupling assembly 114 is shown which is not according to the claimed invention.

In the in Fig. 9a shown disengaging position is a soft magnetic rocker 116 in alignment with the shaft 18 and does not interfere with a cam 32, which is shown schematically.

This position is stably realized by a permanent magnet 118 which acts on one end of the rocker 116, the other end being held against rocking movements by means of a stop 117.

If the permanent magnet 118 is moved under the other end of the rocker 116, it is pivoted about an unspecified axis, so that one end of the rocker engages in a corresponding recess of the cam 32 to the shaft 18 and the cam 32 positively to each other to couple Fig. 9b ).

Another embodiment of a clutch assembly 120 is shown in FIGS Figures 10a and 10b shown. This clutch assembly is not in accordance with the claimed invention.

In the clutch assembly 120, a radial slide 122 is mounted on the shaft 18. At the radial slide 122, a permanent magnet 124 is fixed.

Another permanent magnet 126 can be displaced in the axial direction by means of a lifting drive, for example an electromotive spindle drive 119. In Fig. 10a The radial slide 122 is driven by the repulsive forces of the permanent magnets 124, 126 in an opening of the cam 32 to produce a positive connection between cam 32 and shaft 18.

In the presentation of the Fig. 10b the radial slide 122 is positively received in a recess of the shaft 18, so that no positive connection between shaft 18 and cam 32 is made.

The disengagement of the radial slide can be done automatically, e.g. by roof-like flanks between the radial slide 122 and the cam 32nd

Fig. 11 shows an alternative embodiment of a slider 40 "'.

In this embodiment, instead of a plurality of circumferentially distributed first permanent magnets 42 and a plurality of circumferentially spaced second permanent magnets 44, the slider has a disk-like permanent magnet 130 oriented longitudinally of axis 19 and independent of the rotational position, the north pole of permanent magnet 130 acts to decouple (or couple ) and the south pole for coupling (or decoupling).

Although the slide 40 "'is structurally simpler to manufacture, no magnetic return is achieved as described above.

Fig. 12 shows a further alternative embodiment of a slider 40 ^IV .

In this embodiment, the longitudinal groove 66 "is slightly longer in the region of the second permanent magnets 44.

In this case, a stable uncoupling of the slider 40 can be achieved even without self-locking of the lifting drive 36. Because the stroke H of the slider 40 ^IV is selected so that in the uncoupling position, the permanent magnet 54 is offset from the second permanent magnet 44 by a displacement amount Δs. As a result, the repulsive poles are slightly farther apart than if they were directly opposite one another. Consequently, a certain repulsive force must be overcome in order to move the slider 40 ^IV from the uncoupling position in the direction of the coupling position.

Fig. 13 shows a modification of the embodiment of the Fig. 10 , which is generally designated 120 ', which is also not in accordance with the claimed invention.

The clutch assembly 120 'has a spring biased in disengagement direction radial slide 122', to which a permanent magnet 124 'is fixed.

By means of an electromotive spindle drive 119 'is a soft magnetic element 126' displaceable in the axial direction.

In the in Fig. 13 shown position is the soft magnetic element 126 'in the same axial position as the radial slide 122' and the radial slide 122 'is pulled into an unspecified opening of the shaft 18, against the force of a compression spring 132nd

When the soft magnetic element 126 'is axially displaced (dashed position in FIG Fig. 13 ), no magnetic interaction takes place between the permanent magnet 124 'and the element 126', so that the radial slide 122 'is pulled by means of the compression spring 132 in the uncoupling position.

In this embodiment, only a permanent magnet is necessary, the travel of the drive 119 'are compared to the embodiment of the Fig. 10 a little bigger. Furthermore, there is no addition of the restoring forces as in the embodiment of Fig. 10 instead of.

Claims (12)

1. Lock cylinder (10; 60), in particular a profile cylinder, comprising a shaft (18), a component (32; 106) arranged substantially concentric with the shaft (18), and a coupling arrangement (30) for coupling the shaft (18) to the component (32; 106), the coupling arrangement (30) comprising at least one coupling member (50; 108), which can be displaced between a coupling position in which said coupling member (50; 108) interconnects the shaft (18) and the component (32; 106) in a positive fit in the direction of rotation and a decoupling position in which the shaft (18) and the component (32; 106) are decoupled from one another in the direction of rotation, and a drive (34) which is configured to move a drive member (40) between a coupling position and a decoupling position so as to displace the coupling member (50; 108), at least one first permanent magnet (42) being arranged on the drive member (40) and being configured to displace the coupling member (50, 108) into the coupling position when the drive member (40) moves into the coupling position thereof, characterised in that at least one permanent magnet (54; 110) is arranged on the coupling member (50; 108) and is configured to displace the coupling member (50; 108) when the drive member (40) moves, and in that in the decoupling position, the drive member (40) displaces the coupling member (50; 108) into the decoupling position by means of a second permanent magnet (44).
2. Lock cylinder according to claim 1, characterised in that the component (32) is a key bit (32) or a housing (106).
3. Lock cylinder according to either claim 1 or claim 2, characterised in that the shaft (18) is a continuous shaft (18) from one end to the other end of the lock cylinder (10; 60).
4. Lock cylinder according to claim 2, characterised in that the key bit (32) comprises a radial recess (74) in which the coupling member (50) is mounted so as to be displaceable.
5. Lock cylinder according to any one of claims 1 to 4, characterised in that the drive member (40) is in the form of an axially movable slide (40).
6. Lock cylinder according to any one of claims 1 to 5, characterised in that the drive (34) is in the form of an axial drive (34).
7. Lock cylinder according to claim 6, characterised in that the drive (34) is in the form of a lifting electromagnet (34).
8. Lock cylinder according to claim 6, characterised in that the drive is in the form of a an electric-motor-driven spindle drive.
9. Lock cylinder according to any one of claims 1 to 8, characterised in that the first and the second permanent magnet (42, 44) are fixed to the drive member (40) so as to be offset in the movement direction (41) thereof.
10. Lock cylinder according to any one of claims 1 to 9, characterised in that the shaft (18) is in the form of a hollow shaft (18), and in that the drive member (40) is mounted so as to be movable in the shaft (18).
11. Lock cylinder according to any one of claims 1 to 10, characterised in that the coupling member (50; 108) is mounted so as to radially displaceable.
12. Lock cylinder according to any one of claims 1 to 11, characterised in that in the coupling position, the coupling member (50; 108) engages in an aperture (52) in the shaft (18).

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