EP2998472A1 - Knob cylinder for a door or a window - Google Patents

Abstract

The invention relates to a knob cylinder (10) for a door or a window, comprising a lock cylinder (12) which has a locking bit (14) for actuating a locking device (16) with a handle (20) for rotational actuation of a drive shaft (18). , In which a movement coupling of the drive shaft (18) with the cam (14) by means of an actuator (24) is controllable so that in a release state of the actuator (24) of the cam (14) by means of the handle (20) is actuated and in that a blocking state of the actuator (24) of the cam (14) is not actuated, wherein for controlling the actuator (24) a control device (28) is provided which has a receiving unit (62) for receiving an authorization signal, wherein the knob cylinder (10) a sensor arrangement (52), which detects a manipulation of parts of the knob cylinder (10), wherein the control device (28) upon detection of a manipulation of parts of the knob cylinder (10) the actuator (24) disabled in its locked state.

Description

The invention relates to a knob cylinder for a door or a window, with a lock cylinder having a cam for actuating a locking device, with a handle for rotational actuation of a drive shaft, wherein a movement coupling of the drive shaft with the cam by means of an actuator is controllable so that in a release state of the actuator, the cam is actuated by means of the handle and that in a locked state of the actuator, the cam is not actuated, wherein for controlling the actuator, a control device is provided which has a receiving unit for receiving an authorization signal.

Knob cylinders of the type mentioned above, an authorization signal is used to release the knob cylinder. The authorization signal is for example from a mobile electronic key in the form of a transmitter or transponder provided and transmitted to the receiving unit. Upon receipt of an authorization signal, the actuator is transferred to its release state, so that a rotary actuation of the handle by means of the drive shaft to the cam is transferable. The cam then serves to drive other lock parts, such as a latch or bolt, which lock parts are then operated so that the door or the window is released and can be opened.

Knob cylinder with electronic locking cylinders are for example from the DE 20 2012 007 659 U1 and from the DE 198 51 308 A1 known.

On this basis, the present invention has the object to provide a possible attack-proof knob cylinder.

This object is achieved in a knob cylinder of the aforementioned type according to the invention that the knob cylinder comprises a sensor arrangement which detects a manipulation of parts of the knob cylinder, wherein the control device deactivates the actuator in its locked state upon detection of a manipulation of parts of the knob cylinder.

The knob cylinder according to the invention makes it possible to detect a manipulation of parts of the knob cylinder and in response to this deactivate the actuator in its locked state. This makes it possible to prevent a manipulative transfer of the actuator in its release state.

The knob cylinder according to the invention allows a high attack protection. For example, a violent attempt to break open, which is associated with a corresponding change of parts of the knob cylinder can be detected by the sensor device, and it can already be initiated directly after the start of the manipulation process, the deactivation of the actuator so that it remains in its blocking state and not more - By further manipulation - in the release state can be transferred.

The manipulation to be detected is, in particular, a mechanical manipulation of parts of the knob cylinder. This concerns, for example, the drilling, sawing, hitting or knocking off parts of the knob cylinder, which are accessible from the outside of the lock ago. These parts are, for example, the handle, components of the handle or a connected to the handle portion of the drive shaft. However, these parts can in particular also be parts of the control device whose manipulation is detected so early that the deactivation of the actuator in its blocking state can already be initiated before parts of the control device are exposed as a result of the mechanical manipulation and for further manipulation ( For example, a Fremdbestromung) are accessible.

It is possible that the drive shaft comprises a predetermined breaking point, which fails when violently acting on the drive shaft or the handle, so that a mechanical connection between the handle and a further inner portion of the drive shaft is destroyed. Such a mechanical manipulation can also be detected by means of the sensor device in order to deactivate it of the actuator in its locked state to initiate. A mechanical manipulation of parts of the knob cylinder may also be to remove parts of the handle, such as a knob cap. In this case, the sensor device thus serves to monitor the joining state of different parts of the knob cylinder.

It is also conceivable that it is a manipulation of parts of the knob cylinder is a thermal manipulation, ie the loading of parts of the Knaufzylinders with cold or heat. This can be detected by a corresponding sensor arrangement with temperature sensor.

Regardless of the type of manipulation, it is preferred if the sensor arrangement is arranged on or in the handle. This has the advantage that the sensor arrangement requires no additional space. Furthermore, it is possible to arrange the sensor arrangement hidden, preferably within the handle.

The sensor arrangement advantageously comprises a structure-borne sound sensor. Such a sensor is used to detect structure-borne noise, which occurs in mechanical action on parts of the knob cylinder, especially when drilling or sawing. It is possible that an evaluation unit is provided for evaluating structure-borne sound signals, so that the structure-borne sound detected by the sensor arrangement can be checked with regard to specific structure-borne sound patterns (for example frequencies).

It is also particularly advantageous to use the structure-borne sound sensor as a wake-up device, so that in a passive, not manipulated state of the knob cylinder Control device can be operated in a power-saving mode.

In a further advantageous embodiment of the invention it is provided that the sensor arrangement comprises a contact switch. Such a contact switch is open, for example, in a non-manipulated state of the knob cylinder and is closed by the fact that parts of the contact switch come into contact with each other as a result of manipulation (for example, the removal or forcible deformation of a component). Such manipulation may be due to, for example, bending a component.

Correspondingly, it is possible for the sensor arrangement to comprise a capacitive sensor whose capacitance changes as a result of the mechanical manipulation of parts of the knob cylinder.

For a particularly space-saving integration of the sensor arrangement in parts of the knob cylinder, in particular in its handle, it is preferred if the sensor arrangement comprises a film structure. Such a film structure may for example form a contact switch and / or a capacitive sensor.

Furthermore, it is preferred if the control device is multi-part and comprises an outer part arranged on the outside of a drill guide and an inner part arranged on the inner side of the drill guide, the outer part and the inner part communicating with one another. In this way, it is possible to protect the inner part of the control device by means of Bohrschutzes from attacks, but on the other hand, parts of the control device outside of one on the inside order to order limited space. Parts that are suitable for the arrangement on the outside, in particular, the receiving unit, which is designed to receive the authorization signals. This includes, for example, an antenna that has an improved reception quality when arranged on the outside of the drill protection.

Moreover, it is possible that the sensor arrangement communicates with the outer part and / or that the actuator communicates with the inner part. In this way, the deactivation of the actuator in its blocking state of the protected by the Bohrschutz inner part of the control device can be made, even if the outer part in the course of an advanced attack removed or manipulated, for example, Fremdbestromt.

The manipulation of parts of the knob cylinder may therefore be an electrical manipulation, alternatively or in addition to a mechanical manipulation, which may be detected by the sensor arrangement detecting an electrical change of state. An example of an electrical manipulation consists in the above-mentioned Fremdbestromung in the course of an advanced attack on the knob cylinder or in an interruption of a power supply of the control device and / or the actuator.

In particular for protection against electrical manipulation, it is preferred if the sensor arrangement is part of the control device. By way of example, sensor arrangement parts which detect the change in an applied voltage can be integrated into the control device. These may be, for example, monitoring inputs of a circuit board and / or components which detect a short circuit and / or perform capacity measurements.

It is also preferred if commissioning of the control device is accompanied by a deactivation of the actuator in its blocking state. If, after failure of a power supply of the controller so this is the first time again connected to a power supply, the actuator is placed in a ground state in which it is disabled and assumes its blocking state.

It is possible that the actuator has a locking element, which is not effective in the release state of the actuator, so does not block a rotational movement of the drive shaft and the transmission of a rotational movement of the handle on the cam. In a blocking state of such an actuator whose locking element acts as a turnstile, which blocks the drive shaft in the direction of rotation. For an operator, this affects the handle so that the handle is blocked due to the blocking by the locking element of the actuator in the direction of rotation and can not be rotated.

But it is also possible that the actuator comprises a clutch which is closed in a release state of the actuator, so that a rotational movement of the handle via the drive shaft and the closed clutch is transmitted to the cam. In a blocking state of such an actuator whose coupling is open, so that a rotary movement of the handle is indeed possible, but not transmitted to the cam due to the open coupling; the handle thus turns "into the void".

The deactivation of the actuator in its blocking state means that an already assumed blocking state of the actuator is maintained, or that the actuator is transferred from its release state into its blocking state and then remains in this blocking state.

It is possible that the deactivation of the actuator is terminated as soon as the sensor device detects a tamper-free state. This has the consequence that the actuator is again transferred to the release state.

However, it is particularly preferred if a cancellation of the deactivation of the actuator takes place only when the receiving unit receives an unlock signal. In particular, it is preferred that a cancellation of the deactivation of the actuator takes place only when the sensor device detects a tamper-free state and at the same time the receiving unit receives an unlock signal.

The unlock signal can be the authorization signal, which is received in the non-manipulated state of the knob cylinder, in order to effect, by means of the control device, a transfer of the actuator from its blocking state into its release state. But it is also possible that the unlock signal is a different signal from the authorization signal and, for example, by means of an additional electronic key, in particular a service transponder, must be provided.

It is possible that the cancellation of the deactivation of the actuator merely causes the actuator after cancellation of the deactivation can receive control signals again, which is a transfer of the actuator in the release state enable. But it is also possible that the cancellation of the deactivation of the actuator is directly associated with a transfer of the actuator from its locked state in its release state.

Further features and advantages of the invention are the subject of the following description and the diagrammatic representation of a preferred embodiment.

Fig. 1

eine Seitenansicht einer Ausführungsform eines Knaufzylinders.

In the drawing shows

Fig. 1

a side view of an embodiment of a knob cylinder.

An embodiment of a knob cylinder is in FIG. 1 represented and designated there by the reference numeral 10. The knob cylinder 10 is used in a conventional manner to control the opening state of a door or a window.

The knob cylinder 10 includes a lock cylinder 12, which includes a lock bit 14 for actuating a known per se and therefore only schematically illustrated closing device 16. The closing device 16 is, for example, a change, which in turn actuates a bolt.

To actuate the Schließbarts 14, a drive shaft 18 is provided, which is drehbetätigbar means of a handle 20. The handle 20 is in particular a knob 22.

The knob cylinder 10 also includes an actuator 24 with an actuator 26. The actuator 26 is formed for example in the form of a coupling, which can be opened and closed. In an opened state of the coupling, the transmission of a rotational movement of an outer drive shaft portion 18a is prevented on an inner drive shaft portion 18b, so that a rotational movement of the handle 20 does not lead to a rotation of the drive shaft portion 18b and a corresponding movement of the Schließbarts 14. This corresponds to the blocking state of the actuator 24.

The release state of the actuator 24 when forming the actuator 26 as a clutch is achieved by closing the clutch so that the drive shaft portions 18a and 18b are non-rotatably connected to each other and rotationally moving the handle 20 via the drive shaft portion 18a, the clutch, and the drive shaft portion 18b the lock bit 14 is transmitted.

In the case of the adjusting element 26, in an alternative embodiment, it may be a mechanical latch, which prevents rotational movement of the drive shaft 18 in a blocking state. As a result, the handle 20 is blocked in the direction of rotation, and the cam 14 is not actuated. By unlocking the actuator 26 by means of the actuator 24, this blockage can be canceled, so that the actuator 24 assumes its release state and a rotational movement of the handle 20 by means of the drive shaft 18 on the cam 14 is transferable.

For controlling the actuator 24, a control device 28 is provided, which is designated overall by the reference numeral 28. The control device 28 comprises an outer part 30 and an inner part 32. The outer part 30 is arranged on an outer side 34 of the knob cylinder 10, preferably in an inner space 56 of the knob 22; of the Inner part 32 on an inner side 36 of the knob cylinder 10. The boundary between outer side 34 and inner side 36 is determined by a plane 38, which in turn is defined by the extension of a Bohrschutzelements 39. Preferably, the drive shaft 18 extends transversely to the Bohrschutzelement 39 and penetrates this in the region of a passage opening 43rd

It is possible that the drive shaft 18 has a predetermined breaking point 40, which is arranged on the outer side 34 with respect to the Bohrschutzelement 39. Forcible knocking off of the handle 20 then causes the drive shaft 18 with its drive shaft sections 18a and 18b to remain on the knob cylinder 10, wherein in particular the passage opening 43 of the drill protection element 39 is blocked by the drive shaft section 18a.

To power the control device 28 or the outer part 30 and the inner part 32 and the power supply of the actuator 24, a battery 41 and supply lines 42, 44, 46 are provided.

For communication between the parts 30 and 32 of the control device 28, a data line 48 is provided.

The inner part 32 communicates with the actuator 24 by means of a control line 50.

The knob cylinder 10 further includes a sensor assembly 52, which includes, for example, a structure-borne sound sensor 54. The structure-borne sound sensor 54 is preferably arranged in the interior 56 of the knob 22, which is covered by a knob cap part 58.

For communication between the sensor arrangement 52 with the control device 28, in particular with the outer part 30 of the control device 28, a line 60 is provided.

The control device 28, in particular the outer part 30 of the control device 28, comprises a receiving unit 62, which is designed to receive authorization signals. Such authorization signals are provided by means of an electronic key 64, which preferably has a transmission unit 66 for transmitting an authorization signal.

In a non-manipulated normal state of the knob cylinder 10, the actuator 24 assumes a locked state and thus prevents actuation of the Schließbarts 14 by means of the handle 20. When approaching a person with an electronic key 64, the receiving unit 62 receives an authorization signal, which from the outer part 30 on the inner part 32 of the control device 28 is transmitted to cause by means of the control line 50, a transfer of the actuator 24 from the locked state to the release state, so that then a rotational movement of the handle 20 by means of the drive shaft 18 is transferable to actuate the cam 14.

If, starting from the above-described normal state of the knob cylinder 10 (actuator 24 is in the locked state), parts of the knob cylinder 10 are manipulated, for example when attempting to drill the drill protection member 39, access to the battery 41 and / or to the inner part 32 of the control device 28, the structure-borne noise sensor 54 detects corresponding sound signals, which are characteristic, for example, for the high-frequency rotation of a drill. This way a can Manipulation of parts of the knob cylinder 10 are detected, so a structure-borne noise signal 1 are sent from the structure-borne sound sensor 54 to the outer part 30 of the control device 28. If the signal 1 exceeds a predefinable threshold (pattern and / or intensity), the outer part 30 generates a second signal 2 which the outer part 30 transmits to the inner part 32. The receipt of the second signal 2 causes the inner part 32 of the control device 28 to send a blocking signal 3 to the actuator 24, which is thus deactivated and remains in its blocking state. If the actuator 24 has not yet assumed its blocking state, the actuator 24 is brought into the blocking state, and the actuator 24 then remains in its blocking state.

Another way to deactivate the actuator 24 in its blocking state is that the inner part 32 generates a fourth signal 4 after a particular manipulative interruption of the power supply from the battery 41, which triggers the deactivation of the actuator 24. In this case, the inner part 32 generates an additional fifth signal 5, which is communicated via the data line 48 to the outer part 30 of the control device 28.

1. 1. Es liegt kein manipulierter Zustand des Knaufzylinders 10 vor. Beispielsweise liegen keine von dem Körperschallsensor 54 erfassten Körperschallsignale vor.
2. 2. Die Empfangseinheit 62 empfängt ein Entsperrsignal 70, welches beispielsweise von dem elektronischen Schlüssel 64 bereitgestellt wird.

A cancellation of the deactivation of the disabled actuator 24 now requires the cumulative conditions 1st and 2nd .:

1. 1. There is no manipulated state of the knob cylinder 10 before. For example, no structure-borne sound signals detected by the structure-borne noise sensor 54 are present.
2. 2. The receiving unit 62 receives an unlock signal 70, which is provided by the electronic key 64, for example.

If both of the above-mentioned conditions 1 and 2 are met simultaneously, the outer part 30 sends a sixth signal 6 to the inner part 32 so that it sends a seventh signal 7 to the actuator 24 to cancel the deactivation of the actuator 24 in its blocking state ,

After cancellation of the deactivation of the actuator 24 of this (after receiving an authorization signal) can be converted back into its release state.

In the manufacture of a knob cylinder 10, the outer part 30 and the inner part 32 of the control device 28 receive a common pairing key. Thus, the two parts 30 and 32 of the control device 28 form a unit in which it is not possible to replace one of the parts 30 or 32 while maintaining the other part 32 or 30.

At any time (may also be delayed in time before a manipulation attempt), the inner part 32 generates a random number and sends them together with a two parts 30 and 32 known sequence (eg a serial number) encrypted with the pairing key to the outer part 30. The outer part 30 then sends the random number in conjunction with the Entsperrsignal 70 to the inner part 30. The inner part 30 recognizes the identity of the random number with the locally stored in the inner part 30 random number that it is a legitimate Unlock signal 70.

The purpose of the random number that is sent from the inner part 32 to the outer part 30 is therefore that a Unlock signal 70, which is fed from the outside, the random number is extended and thus unique. Since the inner part 32 transmits to the outer part 30 a random number known only to these two components, and since the later-released unlock signal 70 is then expanded by the random number, a manipulatively introduced signal is unsuitable for effecting the unlocking since the inner part 32 recognizes the absence of the random number , The random number thus ensures that the unlock signal 70 can not be provided manipulatively.

Claims (15)

Knob cylinder (10) for a door or a window, comprising a lock cylinder (12) having a locking pin (14) for actuating a locking device (16), with a handle (20) for rotational actuation of a drive shaft (18), wherein a movement coupling the drive shaft (18) with the cam (14) by means of an actuator (24) is controlled so that in a release state of the actuator (24) of the cam (14) by means of the handle (20) is actuated and that in a locked state of the actuator (24) the cam (14) is not actuated, wherein for controlling the actuator (24) a control device (28) is provided, which has a receiving unit (62) for receiving an authorization signal, characterized in that the knob cylinder (10) a Sensor arrangement (52) which detects a manipulation of parts of the knob cylinder, wherein the control device (28) upon detection of a manipulation of parts of the knob cylinder (10) the actuator (24) in se disabled in the locked state. Knob cylinder (10) according to claim 1, characterized in that the manipulation of parts of the knob cylinder (10) is a mechanical manipulation. Knob cylinder (10) according to any one of the preceding claims, characterized in that the sensor arrangement (52) is arranged on or in the handle (20). Knob cylinder (10) according to one of the preceding claims, characterized in that the sensor arrangement (52) comprises a structure-borne sound sensor (54). Knob cylinder (10) according to one of the preceding claims, characterized in that the sensor arrangement (52) comprises a contact switch. Knauf cylinder (10) according to any one of the preceding claims, characterized in that the sensor arrangement (52) comprises a capacitive sensor. Knob cylinder (10) according to one of the preceding claims, characterized in that the sensor arrangement (52) comprises a film structure. Knob cylinder (10) according to one of the preceding claims, characterized in that the control device (28) is multi-part and one on the outside (34) of a Bohrschutzelements (39) arranged outer part (30) and one on the inside (36) of the Bohrschutzelements ( 39) arranged inner part (32), wherein the outer part and the inner part (32) communicate with each other. Knob cylinder (10) according to claim 8, characterized in that the sensor arrangement (52) communicates with the outer part (30) and / or that the actuator (24) communicates with the inner part (32). Knob cylinder (10) according to one of the preceding claims, characterized in that the manipulation of parts of the knob cylinder (10) is an electrical manipulation, in particular an interruption of a power supply of Control device (28) and / or the actuator (24), and that the sensor arrangement (52) detects an electrical change of state. Knob cylinder (10) according to one of the preceding claims, characterized in that the sensor arrangement (52) is part of the control device (28). Knob cylinder (10) according to any one of the preceding claims, characterized in that a commissioning of the control device (28) with a deactivation of the actuator (24) is accompanied in its locked state. Knob cylinder (10) according to any one of the preceding claims, characterized in that a cancellation of the deactivation of the actuator (24) takes place when the sensor device (52) detects a tamper-free state. Knob cylinder (10) according to any one of the preceding claims, characterized in that a cancellation of the deactivation of the actuator (24) takes place when the receiving unit (62) receives an unlock signal (70). Knob cylinder (10) according to any one of the preceding claims, characterized in that the cancellation of the deactivation of the actuator (24) with a transfer of the actuator (24) from its locked state is accompanied in its release state.

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