EP2110501B1 - Lock cylinder assembly - Google Patents

Description

The invention relates to a lock cylinder arrangement according to the preamble of claim 1.

At one of the DE 39 18 445 C1 known locking cylinder consists of an unlocking of a sliding bolt, which is blocked in the locked state by a trained as a trap fallen armature of an electromagnet and can be moved axially in the unlocked state with the armature tightened by an inserted key. Thereafter, a lock bit can be operated by the key. The power supply of the electromagnet via key contacts of a arranged in the key handle battery.

From the WO 2004/067885 A1 is a mechanically operated electromagnetic lock known. A key holder into which a key can be inserted and rotated is coupled by means of a coupling with a cam. The key contains a code which can be read by an evaluation circuit after inserting the key in the key holder. If the code is valid, the coupling is closed and by turning the key of the cam is rotated. If the code is invalid, no coupling takes place and the key can only be rotated freely.

The power supply of the evaluation circuit and the electromagnetic lock is carried out by the key either by galvanic contacts or by induction.

Similar versions are also from the EP 0 243 586 A2 , of the EP 1 443 162 A2 and the US 2007/0842259 A1 known.

The publication DE 9004623 U discloses a lock cylinder assembly having an electromagnet operated by a high inrush current and a weaker hold current, respectively.

The invention has for its object to provide a lock cylinder assembly, which is better protected against violence and consumes less power.

This object is achieved in a lock cylinder assembly according to the preamble of claim 1 by the features of this claim.

Further developments and advantageous embodiments will become apparent from the dependent claims.

In the solution according to the invention, the actuating device is ineffective in the uncoupled state of the coupling. Upon actuation, a free path or a blank rotation is performed without having to overcome a blockage. Only after engaging the clutch, the cam is non-positively or positively connected to the actuator. The energy required to actuate the clutch is fed contactless, so that neither any contacts can be damaged, nor a damaging overvoltage can be applied.

By means disposed in the lock cylinder and upstream of the control circuit induction coil can be transmitted through a window in the housing of the lock cylinder over a short distance required for actuating the actuator energy.

By means of an electrical energy store, which can be charged via the induction coil, the actuator can receive an increased inrush current via the control circuit in the turn-on phase. This requires the energy balance of the lock cylinder not be designed for the initial energy demand of the actuator, but can be dimensioned smaller.

The external induction coil and power source may be located in a protected area.

In this case, the lock cylinder can be designed in a simple manner so that the actuator is already activated when powering the external induction coil with energy.

Alternatively, the external induction coil and power source can be arranged in a key or operating device carried by a user.

In this case, a user needs a compatible key or compatible operating device to power the actuator via the induction coil. But this solution is self-sufficient and not dependent on a network connection.

In addition, the unlocking device may comprise an electric emergency opening device, which is connected upstream of the control circuit and from an additional, to the unprotected Range-facing induction coil or galvanic contacts.

This electrical emergency opening device makes it possible to open the cylinder lock nondestructively even in the event of failure of the intended opening possibility.

The unlocking device may comprise a mechanical emergency opening device, which consists of an access channel for coupling and a predetermined breaking opening in the lock cylinder.

In this embodiment, the cylinder lock can be opened even with moderate effort, if all electrical components fail.

According to a further development, the actuating device is a permanently installed spring-loaded pressure, rotary or pull button.

The integration of the push, turn or pull button in the lock cylinder allows a simple, fast and ergonomic operation.

Alternatively, the actuator is a positive receptacle for an externally inserted battery-powered key with a compatible male lug or attachment lug.

This allows additional security features to be implemented. In addition, the lock cylinder can be sunk or flush mounted without protruding parts.

Furthermore, the control circuit can be controlled by an external code or an internal code evaluation circuit arranged in the lock cylinder.

The release of the lock cylinder for actuation can be done according to different safety criteria.

By means of a central code evaluation circuit, the power supply of the external induction coil in the protected area can be switched on and off via a control line.

In this solution, no code evaluation circuit must be implemented in the lock cylinder itself, whereby a cost-effective design is possible.

As an alternative to a mechanical switching contact, the external induction coil can be part of a lock cylinder presence sensor, by means of an evaluation circuit the coupling to the induction coil arranged in the lock cylinder can be monitored.

A presence monitoring of the lock cylinder is possible in this way without additional presence contact.

By a second induction coil can be made by approaching the lock cylinder from the unprotected area in case of failure of the regular opening function, an emergency opening.

Alternatively zur.zentralen external code evaluation can be activated directly by means of an internal code evaluation circuit in the lock cylinder at code match the control circuit via a control output of the code evaluation circuit and thus the lock cylinder can be unlocked.

This embodiment allows a self-sufficient operation of the lock cylinder also in code evaluation.

The induction coil arranged in the lock cylinder can be designed as a combined energy and code receiver which receives energy and code from a key introduced into the key holder.

Due to the double use of the induction coil, the available space and the electronic components are optimally utilized in the tight structural conditions in the lock cylinder.

In a practical embodiment, the clutch of the unlocking device comprises a spring-loaded rocker arm which is coupled to the actuating device and is pivotable between an engagement position and a disengaged position with the lock bit. A support surface of the rocker arm is supported on a spring-loaded rocker which is pivotable between a coupling position and a coupling-out position of the rocker arm. The rocker is fixed by an actuator in its active state in the relaxed position and in its passive state by application of force to the rocker arm pivotable.

The invention will be explained with reference to an embodiment shown in the drawing.

Fig. 1

eine schematische Darstellung eines Schließzylinders mit Betätigungsknopf und Energiespeisung von einem schützen Bereich,

Fig. 2

eine schematische Darstellung eines Schließzylinders mit Schlüssel zur Energiespeisung und Codeübertragung,

Fig. 3

eine Sicht auf eine Betätigungsvorrichtung und einen Schließbart des Schließzylinders im unbetätigten Zustand,

Fig. 4

eine Sicht auf eine Betätigungsvorrichtung und einen Schließbart des Schließzylinders im entsperrten und betätigten Zustand,

Fig. 5

eine Ansicht und einen Schnitt durch einen Schließzylinder im unbetätigten Zustand,

Fig. 6

eine Ansicht und einen Schnitt durch einen Schließzylinder im gesperrten und betätigten Zustand,

Fig. 7

eine Ansicht und einen Schnitt durch einen Schließzylinder im entsperrten und betätigten Zustand.

Fig. 8

einen Türbetätigungsgriff mit einem Schließzylinder nach der Erfindung im geschlossenen Zustand,

Fig. 9

einen Türbetätigungsgriff mit einem Schließzylinder nach der Erfindung im geöffneten Zustand,

Fig. 10

ein vereinfachtes Blockschaltbild einer externen Zentrale mit einer Station im geschützten Bereich und eines Schließzylinders und

Fig. 11

ein vereinfachtes Blockschaltbild eines Schlüssels und eines Schließzylinders

In the drawing show:

Fig. 1

a schematic representation of a lock cylinder with actuator button and power supply of a protect area,

Fig. 2

a schematic representation of a lock cylinder with key for energy supply and code transmission,

Fig. 3

a view of an actuator and a cam of the lock cylinder in the unactuated state,

Fig. 4

a view of an actuator and a cam of the lock cylinder in the unlocked and actuated state,

Fig. 5

a view and a section through a lock cylinder in the unactuated state,

Fig. 6

a view and a section through a lock cylinder in the locked and actuated state,

Fig. 7

a view and a section through a lock cylinder in the unlocked and actuated state.

Fig. 8

a door operating handle with a lock cylinder according to the invention in the closed state,

Fig. 9

a door operating handle with a lock cylinder according to the invention in the opened state,

Fig. 10

a simplified block diagram of an external center with a station in the protected area and a lock cylinder and

Fig. 11

a simplified block diagram of a key and a lock cylinder

Fig. 1 shows a schematic representation of a lock cylinder 10 with cam 12, operating button 14 of an actuator and power supply via an induction coil as part of a series resonant circuit 16 of a protected area. If the induction coil of the series resonant circuit 16 is turned off, the operating knob 14 can only be pressed empty without moving the cam 12. When the induction coil of the series resonant circuit 16 is switched on, the clutch is engaged with an internal unlocking device of the lock cylinder, which establishes a non-positive or positive connection between the actuating device and the lock bit 12. When pressing the actuating button 14 and the cam 12 is moved.

Fig. 2 shows a schematic representation of a lock cylinder 10 with cam 12 and a key 18 for power supply and code transmission. Upon insertion of the key 18 with its compatible insertion lug 23 into a key receptacle 20 of the lock cylinder 10 energy is transmitted to an internal induction coil of the lock cylinder 10 via an induction coil 22 of the key 18.

At the same time a code is transmitted and evaluated by an internal code evaluation circuit in the lock cylinder 10. If the result of the evaluation is positive, the coupling is engaged with an internal unlocking device of the lock cylinder. By turning or pressing the key 18 and the lock bit 13 can then be moved.

Fig. 3 shows a view of an actuator 24 with an operating knob 14 and a cam 12 of the lock cylinder 10 in the de-energized state. The cam 12 consists of two pivotable about axes 26, 28 wings 30, 32, which are spread by a spring 34. The actuator 24 is formed as a displaceable between a stop pin 36 pin 38 and pressed in the unactuated state by a spring 40 to the outside.

With the pin 38, a spring-loaded rocker arm 42 is pivotally connected, which is part of a coupling of an unlocking device. The rocker arm 42 can assume two different tilting positions. In a disengaged position he performs when pressing the pin 38 together with this only a free path.

In an in Fig. 4 shown engaged position, however, passes on impressions of the pin 38 and entrainment of the rocker arm 42, a front-side abutment surface 44 in engagement with actuating surfaces 46, 48 of the pivotable wings 30, 32 and pivots them inwardly. Fig. 4 shows accordingly a view of the actuator 24 in the unlocked and actuated state.

Fig. 5 shows a view and a section through a lock cylinder 10 in the unactuated state. The rocker arm 42 is tiltably mounted about an axis 50 on the pin 38 and biased by a compression spring 52, which aims at an inclined orientation of the rocker arm 42. A support surface 54 of the rocker arm 42 is supported on a rocker 56, which is biased by a spring 58 and strives for a horizontal position of the rocker 56. Below the rocker 56 is an electromagnet 60 with a pivotable armature 62. The armature 62 is biased by a spring 64, which aims at a fallen position of the armature 62. In the fallen position 'of the armature 62, he fixed the rocker 56 in its horizontal position. On a circuit board 70, a rectifier, an energy storage and a control circuit for the electromagnet 60 are arranged.

The solenoid 60 can be powered externally via an induction coil 66 and then attracts the armature 62. When dropped anchor 62, the rocker 56 remains fixed in its horizontal position. If the pin 38 is then pressed in via the actuating button 14, the profiled support surface 54 of the entrained rocker arm 42 slides over the fixed rocker 56 and aligns the rocker arm 42 horizontally. In the horizontal position, the abutment surface 44 does not engage with the actuating surfaces 46, 48 of the pivotable wings 30, 32, but undercuts the actuating surfaces 46, 48. The rocker arm 42 performs a free travel and the pivotable wings 30, 32 remain in the spread position. This condition is in Fig. 6 shown, the locked and operated state.

When the induction coil 66 is supplied with power externally, the electromagnet 60 is activated and attracts the armature 62. The rocker 56 remains at first by the spring bias in its horizontal position, but can now give way when it is acted upon by a force that overcomes the force of the spring 58. This time is pressed over the actuator button 14 of the pin 38, then slides the profiled and in parts The force of the compression spring 52 is stronger than the force of the spring 58 and the profiled support surface 54 of the entrained rocker arm 42 can pivot the rocker 56 down while the rocker arm 42 maintains its inclined position. In this case, the abutment surface 44 engages with the actuating surfaces 46, 48 of the pivotable wings 30, 32 and pivots them inwardly. This condition is in Fig. 7 represented, the unlocked and actuated state.

By constructive modification of the coupling described as part of the internal unlocking of the lock cylinder and a trained as a rotary actuator can be non-positively or positively connected to a rotatable cam. The rotary cylinder can be confirmed with a knob or a key. In the disengaged state, he can spin freely, in the engaged state he takes with the rotatable cam with z. B. to operate a lock mechanism.

Fig. 8 shows a door operating handle 72 with a lock cylinder 10 in an embodiment according to the invention in the closed state and Fig. 9 in the open state.

A lock cylinder 10 with a push button 14 is installed in a pivotable and rotatable door operating handle 72. In the closed state, the door operating handle 72 engages in a groove of a door fitting 76 fastened to a door 74 and is thus secured in a form-fitting manner against rotation. On the back of the door 74 of the door fitting 76 is formed into a sleeve with grooves in the sleeve jacket. The spread wings of the Schließbarts 12 engage in these grooves and fix on the lock cylinder 10, the door operating handle 72 in the groove of the sleeve. On a circuit board 78 in the protected area, an external induction coil of a series resonant circuit 16 for the power supply of the lock cylinder 10 is arranged.

If the power supply is turned off, the push button 14 can only be pressed in empty without acting on the cam 12. If the power supply is turned on, the wings of the Schließbarts 12 are pivoted by pressing the push button 14 and the door operating handle 72 may at its lower formed by an undercut Nipples 82 are detected with a finger and swung out. Subsequently, it can be rotated to retract a door latch via its square 84, so that the door 74 can be opened. Upon subsequent closing of the door 74, the door operating handle 72 is again rotated in alignment with the door fitting 76 and pressed. The beveled wings of the Schließbarts 14 initially retract themselves when inserted into the sleeve of the Türbeschlags'76 and then spread by spring force into the grooves in the sleeve jacket. Via a likewise arranged on the board 78 switch 80 can be monitored mechanically, whether the door operating handle 72 is pressed with lock cylinder 10 and thus the door 74 is locked or not. The presence of the lock cylinder 10 can also be monitored electronically by detecting the vapor deposition of the induction coil of the series tuned circuit 16.

Fig. 10 11 shows a simplified block diagram of an external center 116 with a protected area station 118 and a lock cylinder 10. The external center 116 includes code evaluation circuit 88 and an alarm generator 92. The station 118 includes an AC voltage source 86 controlled by the code evaluation circuit 88 via a control line Further, the station 118 comprises a lock cylinder presence sensor, which may be the same induction coil of the series resonant circuit 16 in conjunction with a detection circuit 90 or a mechanical switch 80. The detection circuit 90 is connected via a signal line to the Alarm device 92 connected.

The lock cylinder 10 comprises an internal induction coil 66, to which a rectifier 94, an energy store 96 and a control circuit 98 are connected downstream. To the control circuit 98, an actuator 100 is connected. The control circuit 98 has a control characteristic according to which a charging process of the energy store 96 is first awaited, then the actuator 100 is acted upon in the startup phase by an increased startup current drawn by the energy store 96 and finally in the hold phase by a lower hold current drawn by the induction coil 66 , An additional internal induction coil 102, connected to the rectifier 94 and adjacent to the unprotected area, provides power for emergency opening.

Fig. 11 11 shows a simplified block diagram of a key 18 and a lock cylinder 10. The key 18 comprises an AC voltage source 104, a combined code generator and code evaluation circuit 106, a detector 108, a pushbutton 110, a battery 112 and an induction coil 22.

The lock cylinder 10 includes in addition to the Fig. 10 components described a combined code evaluation and feedback circuit 114. With the code evaluation circuit 114, the control circuit 98 is activated with a positive evaluation result.

Upon actuation of the button 110 in the key 18, the lock cylinder 10 is supplied with energy and a code from the code generator circuit 106 in the key 18 to the code evaluation circuit 114 in the lock cylinder 10 is transmitted. If the evaluation is positive, the control circuit 98 is activated to actuate the actuator 100 and a return message is transmitted to the key 18 and reported via the detector 108.

Claims (13)

1. A lock cylinder arrrangement, consisting of a casing with a locking cam (12), an unlocking device and an actuation device, said unlocking device including a coupling arranged between the actuation device and the locking cam (12) which is uncoupled in the locked state and coupled in the unlocked state, the coupling being able to be actuated via an electromagnetic or piezoelectric actuator (100) with a control circuit (98) which is contactlessly externally supplied with energy by the control circuit (98) having an induction coil (66) arranged in the lock cylinder (10) connected in front, said induction coil (66) being supplied with energy via an external induction coil (22) and energy source (112), characterised in that the control circuit (98) includes an electrical energy store (96) which can be charged up via the induction coil (66) and the actuator (100), via the control circuit (98), is supplied, in the switch-on phase, with an increased switch-on current obtained from the energy store (96) and is supplied, in the holding phase, with a lower holding current obtained from the induction coil (66).
2. The lock cylinder arrangement according to Claim 1, characterised in that the external induction coil (22) and energy source (112) are arranged in a protected area.
3. The lock cylinder arrangement according to Claim 1, characterised in that the external induction coil (22) and energy source (112) are arranged in a key (18) or operating unit carried along by a user.
4. The lock cylinder arrangement according to one of Claims 1 to 3, characterised in that the unlocking device includes an electrical emergency-opening device which is connected in front of the control circuit (98) and consists of an additional induction coil (102) pointing towards the unprotected area, or of galvanic contacts.
5. The lock cylinder arrangement according to one of Claims 1 to 4, characterised in that the unlocking device includes a mechanical emergency-opening device which consists of an access channel to the coupling and a predetermined breaking point in the lock cylinder (10).
6. The lock cylinder arrangement according to one of Claims 1 to 5, characterised in that the actuation device is a firmly installed spring-loaded pressing knob, turning knob or pull knob (14).
7. The lock cylinder arrangement according to one of Claims 1 to 6, characterised in that the actuation device is a key receptacle (20) with a key (18) inserted from the exterior.
8. The lock cylinder arrangement according to one of Claims 1 to 7, characterised in that the control circuit (98) is controlled by an external code evaluation circuit (114) or an internal code evaluation circuit (114) arranged in the lock cylinder (10).
9. The lock cylinder arrangement according to Claim 8, characterised in that the energy supply of the external induction coil (22) in the protected area can be switched on and off by means of a central external code evaluation circuit (106) via a control line.
10. The lock cylinder arrangement according to one of Claims 1 to 9, characterised in that the external induction coil (22) is a component of a lock cylinder presence sensor, by means of which the coupling to the induction coil (66) arranged in the lock cylinder (10) can be monitored via an evaluation circuit (106).
11. The lock cylinder arrangement according to Claim 8, characterised in that the control circuit (98) can be directly activated via a control output of the code evaluation circuit (114) by means of an internal code evaluation circuit (114) in the lock cylinder (10) if the code matches.
12. The lock cylinder arrangement according to Claim 11, characterised in that the induction coil (66) arranged in the lock cylinder (10) is configured as a combined energy and code receiver which receives energy and code from a key (18) introduced into the key receptacle (20).
13. The lock cylinder arrangement according to one of Claims 1 to 12, characterised in that the coupling of the unlocking device includes a spring-loaded rocker arm (42) which is coupled to the actuation device and which is pivotable between an engagement position and a non-engaging position with the locking cam (12), that a support surface (54) of the rocker arm (42) is supported on a spring-loaded rocker (56) which can be pivoted between a coupling-in position and a decoupling position of the rocker arm (42) and that the rocker (56) is fixed by an actuator (100) in its active state in the relaxed position and can be pivoted in its passive state by the application of force of the rocker arm (42).

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