EP1722049A2 - Electro-mechanical lock system - Google Patents

Abstract

The locking system has identifying bearer activation and a locking element attached to both door sides to operate the lock mechanism using bearer activation to change it from unlocked to engaged position. The coupling unit (12) which couples it to the identification bearer activation via an actuator has two halves, one (13,15) attached to a handle (9) on one side of the door, the other (14,16)attached to a handle (37) on the other. Through identifying bearer activation using an actuator (33) on the door, both halves can move from released to engaged mode.

Description

The present invention relates to an electromechanical locking system for a door lock with identifier activation according to the preamble of claim 1.

Such a locking system is known from DE 198 48 286 A1. This locking system has a lock cylinder which can be operated from the inside, ie from the side of a room to be protected with a rotary knob and from the outside with a key. In the lock cylinder, a closing element is rotatably mounted to act on a closing mechanism of the lock. There is a rotationally fixed connection between the rotary knob and the closing element, so that the door lock can always be opened from the side of a room to be protected by turning the rotary knob. On the outside, the lock cylinder has a rotatable inner cylinder with a slot-shaped recess for insertion of a matching key. After insertion of the key, this is initially not rotatably connected to the closing element. To produce such a connection, among other things a rotatably mounted in this clutch unit is arranged in the lock cylinder. This coupling unit has a slider which can be prestressed by inserting the key in the direction of a driving position. By inserting the key, an electrically conductive connection is simultaneously established between a communication unit arranged in the key and a control unit arranged in the rotary knob on the opposite side of the lock. As a result, information exchange is started by access or authorization codes stored in the control unit and by the communication unit carried by the key, whereby It is checked whether the inserted key is a key authorized for this locking system or not. If the codes do not match, the information exchange is aborted and the key is still not rotatably connected to the closing element. If the identity query reveals that the key has a suitable code, an electric motor is activated by the control unit, as a result of which a disk, which is seated in a rotationally fixed manner on its output shaft, is rotated with centrifugal weights arranged thereon. These centrifugal weights form a mechanical lock in their idle state for the slide of the coupling unit, so that it can not relax in the driving direction. By turning on the electric motor, the centrifugal weights are pushed outwards, whereby the mechanical lock for the slide is released and this can move into a driving position in which it produces a rotationally fixed connection between the key and the closing element. The lock can now be opened by turning the key.

The electromechanical locking system described above has the disadvantage that due to the required axial actuation of the coupling unit by a key not on both sides knob can be provided. In addition, this locking system is not suitable for a two-sided access authorization query, since the rotary knob is permanently rotatably connected to the closing element. The coupling unit of this locking system is also designed relatively expensive.

In DE 196 12 156 C2 an electromechanical door lock is described, which is equipped with an identifier activation and has an actuated by an actuator coupling unit which is driven by a coaxially arranged motor.

DE 43 14 854 C2 also describes an electromechanical locking system, wherein in this system, an electromechanical coupling is driven by a stepper motor.

Finally, DE 196 13 460 A1 describes an electromechanical locking system which has two separate clutches.

Object of the present invention is to provide a locking system of the generic type available, which allows the arrangement of a rotary knob with identifier activation on both the inside and outside with double-sided access authorization query, and also has a comparatively simple design coupling unit.

This object is achieved with an electromechanical locking system having the features of claim 1.

In the solution according to the invention two functionally identical halves of the coupling unit are provided by the activator separately, d. h., Each individually, from a release into a driving state can be transferred, in which the respective half of the coupling unit associated with the handle rotatably connected to the closing element. An activation or readiness preparation of the coupling unit by mechanical application of axial forces by means of a key is therefore not required, whereby a, of course, can also be used in the present invention as a handle usable key can be replaced by a rotary knob. This increases the variability of the locking system in terms of useable handling. The actuator is arranged on a door side, usually on the inside, to complicate manipulation. The access authorization can be queried from both door sides, wherein a non-rotatable connection of the respective query side associated handle with the closing element is made only by an identifier activation. Since the application of additional axial forces for "clamping" of the coupling unit in the inventive solution is not required, the coupling unit can be simpler compared with the prior art.

Although an electromechanical locking system with arranged on both sides rotary knob is known from DE 198 34 691 A1, but can be done in this locking system due to the dependent coupling of the two rotary knob no exchange of the two rotary knob by a key, which in the present invention by low structural changes in a simple manner is possible.

In an advantageous embodiment of the invention, the coupling unit has one associated with the two handles on the closing element, biased locking ram and an axially movable by the actuator in both directions, with the locking plungers in operative connection coupling rod, wherein upon movement of the coupling rod in one direction engages in this direction biased latching plunger for producing a rotationally fixed connection with the associated handle in the closing element, and engages in movement of the coupling rod in the other direction of the prestressed in this direction latching plunger for producing a rotationally fixed connection with the associated handle in the closing element. The preparation of a rotationally fixed connection between the handle and the closing element is thus effected by biased to the closing element locking plunger, said locking plunger are prevented in the release state by a by the actuator in both directions translationally driven coupling rod to a locking in the closing element. The driving state of the latching plunger can thus be brought about in a simple manner, that the coupling rod is displaced in one or the other direction. This control is simple and therefore robust.

In a further embodiment of the invention, a stepping motor is used as the actuator. A stepper motor has significant advantages over the electromagnets and DC motors used in conventional electromechanical lock systems. Due to its design, a stepper motor can only be rotated externally with greater effort. This self-locking can, if necessary, be reinforced by an upstream transmission. For the design of the transmission, it is advantageous that the stepping motor delivers particularly high torques, especially at the required low speeds for adjusting drives. The reduction can therefore be selected lower than that of corresponding DC motors and the transmission can be made more compact. In locking systems with authorization on both sides, manipulation is much more difficult than with DC motors and electromagnets. The stepper motor can not be rotated by simply applying a voltage, but remains in a specific position. To rotate the stepper motor, a special motor control (electronic circuit) is required, to which four, six or eight cables of the motor, depending on the design must be connected. The stepper motor can only be put into operation when properly connected and with the correct pulse sequence. An unauthorized operation of the locking system therefore requires deeper expertise and high time and material costs. The use of a stepper motor further increases the tamper resistance of the locking system.

The fact that a stepper motor delivers particularly high torques at low speeds, ie does not require an upstream reduction gear, is advantageously utilized in the present invention in that the stepping motor is arranged coaxially with the coupling rod and its drive shaft is designed as a hollow shaft with an internal thread the stepper motor facing the end of the coupling rod is provided with an internal thread, so that the coupling rod in the hollow shaft and is screwed out. By this design, an axial displacement of the coupling rod in both directions, without the interposition of a transmission has been realized in a simple manner. In kinematic reversal, the coupling rod can be provided with an internal thread and the drive shaft of the stepping motor at the interface with an external thread.

Fig. 1

eine Draufsicht auf einen zum erfindungsgemäßen Schließsystem gehörenden, mit einem Drehknauf bzw. Schlüssel betätigbaren Schließzylinder von der Schlüsselseite aus,

Fig. 2

einen Schnitt A-A gemäß Fig. 1 nach einer ersten Ausführungsform der Erfindung, wobei sich beide Hälften der Kupplungseinheit im Freigabezustand befinden,

Fig. 3

eine Darstellung gemäß Fig. 2, wobei sich die schlüsselseitige Hälfte der Kopplungseinheit im Mitnahmezustand befindet,

Fig. 4

eine Darstellung gemäß Fig. 2, wobei sich die drehknaufseitige Hälfte der Kupplungseinheit im Mitnahmezustand befindet,

Fig. 5

eine Darstellung gemäß Fig. 2 mit eingezeichneter Stromversorgung und Kommunikationseinrichtung des Schlüssels,

Fig. 6

eine Draufsicht auf weitere Ausführungsformen der Erfindung mit einem Schließzylinder und beidseitig angeordneten Drehknaufen,

Fig. 7

einen Schnitt B-B gemäß Fig. 6, wobei sich die beiden Hälften der Kupplungseinrichtung gemäß Fig. 1 in ihrem Freigabezustand befinden, und

Fig. 8

eine Darstellung gemäß Fig. 7 mit eingezeichneter Stromversorgung.

The invention will be explained in more detail below with reference to embodiments. In the accompanying schematic drawing shows:

Fig. 1

a top view of a locking system belonging to the invention, operable with a knob or key lock cylinder from the key side,

Fig. 2

1 according to a first embodiment of the invention, wherein both halves of the coupling unit are in the release state,

Fig. 3

2 is a representation according to FIG. 2, the key-side half of the coupling unit being in the driving state, FIG.

Fig. 4

2 is a representation according to FIG. 2, wherein the rotary knob-side half of the coupling unit is in the driving state, FIG.

Fig. 5

2 shows a representation of the power supply and communication device of the key,

Fig. 6

a top view of further embodiments of the invention with a lock cylinder and both sides arranged rotary knob,

Fig. 7

a section BB of FIG. 6, wherein the two halves of the coupling device of FIG. 1 are in their release state, and

Fig. 8

a representation of FIG. 7 with marked power supply.

The locking cylinder 1 shown in the drawing has a concentric with its longitudinal axis 2 arranged cylinder jacket 3, from which a locking tongue 4 protrudes radially downwards. The locking tongue 4 has a through hole 5, which serves to fasten the lock cylinder 1 in a door leaf, not shown, in which in this bore 5 through a screw from the front side of the door leaf is screwed.

The cylinder jacket 3 receives about the longitudinal axis 2 rotatably mounted inner cylinder 6, 7 and 8. The inner cylinder 6 consists of a plug 6.1 and a contact part 6.2. The contact part 6.2 is used to close a circuit by an inserted into the plug 6.1 key 9, as will be explained later. For receiving the shank 9.1 of the key 9, the insertion part 6.1 has a channel 10, into which open in the 6.1 6.1 transverse bores 11 open. These transverse bores 11 receive pins, not shown, which are biased in the direction of the receiving channel 10. This training corresponds in principle to a pin tumbler conventional lock cylinder. This ensures that the plug 6.1 only with fully inserted, the coding of Stiftzuhaltung corresponding key in the cylinder jacket 3 can be rotated, and ensures that the key 9 can be deducted only in a single angular position of the plug 6.1. The plug 6.1 and the contact part 6.2 are interlocked at their ends. Such a toothing is present between the contact part 6.2 and the inner cylinder 7. The inner cylinder parts 6.1, 6.2 and 7 are so rotatably connected to each other, i. by rotating an inserted into the lock cylinder 1 key 9, the inner cylinder parts 6.1, 6.2 and 7 rotate synchronously with.

The inner cylinders 7 and 8 each receive one half of a coupling unit 12. Each half of the coupling unit 12 has a cocking slide 13 or 14, a lock 15 or 16 and a latching plunger 17 or 18 on. The cocking slide 13 and 14 and the Einrastsperren 15 and 16 are mounted axially displaceably on a coupling rod 19. They are separated by a concentric on the coupling rod 19 seated compression spring 20 which bears against the mutually facing end faces of Einrastsperren 15, 16, to bear against a latched onto the free end of the coupling rod 19 locking disc 21 and to a shoulder 22 of the coupling rod 19 pressed. The Einrastsperren 15, 16 have radially projecting locking rings 23 and 24, in which retaining lugs 25 and 26 of the latching plunger 17 and 18 abut. In the release state shown in FIG. 2, which is determined by the axial position of the coupling rod 19, prevent the locking rings 23, 24 of the Einrastsperren 15 and 16 that the biased by compression springs 27, 28 on a closing element 29 locking plunger 17 and 18th engage in recesses 30 and 31 of the closing element 29. The closing element 29 is rotatably mounted about the longitudinal axis 2 of the lock cylinder 1 and has at its lower end a cam 32 for acting on a locking mechanism, such as a bolt of the lock.

The drive of the coupling rod 19 via a stepper motor 33 which is arranged in the lock cylinder 1 coaxial with the longitudinal axis 2. The arrangement of the stepper motor 33 in the lock cylinder 1 increases the security against manipulation of the locking system.

The drive shaft 34 of the stepping motor 33 is formed at least in its free end portion as a hollow shaft 35 with an internal thread. The stepper motor 33 facing the end of the coupling rod 19 is formed as a threaded rod 19.1 with an internal thread of the hollow shaft 35 matching external thread and screwed into the hollow shaft 35. Depending on the direction of rotation of the stepping motor 33, the coupling rod 19 is due to this training, based on the drawing, axially moved to the left or right, whereby the halves of the clutch unit 12 are transferred from its release state in the driving state, as later will be explained. In kinematic reversal, the coupling rod 19 may be provided with an internal thread and the drive shaft 34 of the stepping motor 33 at the interface with an external thread.

The power supply of the stepping motor 33 via batteries 36 which are housed in a rotary knob 37 which is provided on the opposite side of the key 9 door as a handle for the actuation of the lock cylinder 1. In addition to the batteries 36, the rotary knob 37 also takes on boards 38 with electronic components for the control of the lock cylinder 1 and for the authorization query.

The housing of the rotary knob 37 is guided through a tubular collar-like projection 39 in the cylinder jacket 3. The mutually facing end faces of this crude collar-like projection 39 and the inner cylinder 8 are intermeshed, so that there is a rotationally fixed connection between the rotary knob 37 and the inner cylinder 8.

The transfer of the two halves of the clutch unit 12 from its release state into its driving state will be explained below with reference to FIGS. 2 to 4.

As already described above, Fig. 2 shows the release state of both halves of the coupling unit 12. In this state, neither the inserted into the plug 6.1 key 9 nor the knob 37 rotatably connected to the closing element 29. Turning on the key 9 or on the rotary knob 37 would therefore be inconclusive, i.e., the lock could not be opened by these rotational movements.

When the lock is to be opened from the outside of the door, a key 9 is inserted into the insertion part 6.1 of the inner cylinder 6, whereby a circuit is closed via the contact part 6.2. By closing of the circuit enters a built-in key 9 communication unit with the arranged on the boards 38 control electronics in combination. There is a data exchange in which the key code is compared with a stored in a memory unit of the control electronics code. If this comparison gives correspondence, the electronic control unit controls the stepping motor 33, so that its drive shaft 34 runs in a direction of rotation which draws the coupling rod 19 into the hollow shaft 35, ie, the coupling rod 19 moves from the left with reference to the drawing to the right. This is shown in Fig. 3. Due to this translational movement of the coupling rod 19 and the lock 15 moves with its locking ring 23 from left to right, so that the latching ram 17 can engage 27 under the action of the compression spring 27 in the recess 30 of the closing element. Thus, the key 9 is rotatably connected via the inner cylinder 6, 7 and the latching plunger 17 with the closing element 29. Now, if the key 9 is rotated, the closing element 29 is taken and the lock bit 32 can for example act on a latch of the lock, so that the lock is opened.

If the lock is to be opened from the inside of the door, that is to say via the rotary knob 37, an authorization query likewise takes place again. For this purpose, a person seeking admission must bring an identifier in the vicinity of the rotary knob 37. It then takes place, for example via an electric field, a data exchange between the identifier and arranged in the rotary knob 37 control electronics. If this adjustment matches the mutual codes, the stepping motor 33, again this time in the other direction of rotation, is actuated again, as a result of which the coupling rod 19 is shifted to the left, as shown in the drawing, as shown in FIG. As a result, the lock 16 moves with its locking ring 24 to the left, so that the locking plunger 18 can engage under the action of the compression spring 28 in the latching recess 31 of the closing element 29. Thus, the knob 37 via the neck 39, the inner cylinder 8 and the latching plunger 18 rotatably connected to the closing element 29, and turning the knob 37 leads to the opening of the lock.

The locking cylinder 1 described above with reference to FIGS 2 to 4 can be easily reconfigured so that an operation from the inside without authorization query is possible .. For this purpose, only the locking ring 24 of the lock 16 to remove, or the lock 16 by a replace appropriate element without locking ring or omit altogether. The plunger 18 is then always engaged in the recess 31 of the Schüeßelementes 29, so that a permanent rotationally fixed connection between the knob 37 and the closing element 29 is made.

The locking cylinder 1 shown in Fig. 5 corresponds in its execution to the locking cylinder 1 described above with the exception that the stepping motor 33 in this embodiment with an internal hollow shaft, which is not apparent from the illustration, is executed. In this embodiment, the circuit and the communication unit of the key 9 is additionally drawn. The current is conducted via electrical lines 40 and sliding contacts 41 to the contact part 6.2 of the inner cylinder 6. In the contact part 6.2, one pole of the electrical leads 40 is connected to a central contact pin 42 and the other pole is connected to a contact spring 43. The communication unit of the key 9 is arranged in the handle part 9.2 and consists of two induction coils 44 and 45 and a transponder chip 46. One end 44.1 of the induction coil 44 is electrically conductively connected to the metallic shaft 9.1 of the key 9, while the other end 44.2 of the induction coil 44 as compared to the shaft 9.1 electrically insulated conductor 47 is guided to the front end of the shaft 9.1. If the key 9 is inserted into the insertion part 6.1 of the inner cylinder 6, then the circuit is closed by the contact spring 43 abutting the metallic shaft 9.1, while the insulated conductor 47 contacts the central contact pin 42. Due to the adjacent Voltage is a magnetic coupling between the inductors 44 and 45, whereby the transponder chip 46 is supplied with power, and in turn transmits the key code via the two induction coils 45 and 44 and via the circuit to the control electronics in the knob 37. If the mutual codes match, the stepper motor 33 is driven, as explained in the previous embodiment.

The exemplary embodiment according to FIGS. 6 and 7 differs from the preceding one in that rotary handles 48 and 51 are provided on both sides as handles for operating the lock cylinder 1. Another difference is that the stepping motor 33 is arranged in the rotary knob 48. Such an arrangement of the stepper motor 33 may be required if its placement in the lock cylinder 1 is not possible due to lack of space. The drive of the coupling rod 19 takes place here via two meshing gears 49 and 50, wherein the gear 49 is seated on the drive shaft 34 of the stepping motor 33, and provided with an internal thread gear 50 on the threaded portion 19.1 of the coupling rod 19 runs. A reduction between the gears 49 and 50 is not required due to the use of a stepper motor 33. The gears 49 and 50 are provided only to order the stepper motor 33 for reasons of space laterally in the knob 48 can.

Also, this lock cylinder 1 is designed for a two-sided access authorization query. For this purpose, corresponding electronic assemblies are present in the rotary knobs 48 and 51, which can communicate with an outer identifier for matching codes. Such communication devices are known and will therefore not be explained further here.

The embodiment of FIG. 8 corresponds to that of FIG. 7 and shows a possibility of laying power lines between the two rotary knobs 48 and 51. The power lines 40 extend here in or parallel to the longitudinal axis 2 of the lock cylinder 1 and the inner cylinder 6, 7 and 8 are always connected to each other in a rotationally fixed manner. As a result, both rotary knob 48, 51 rotate in the release state upon actuation of the rotary knob 48, 51, whereby sliding contacts are avoided. In an authorized operation, for example, the rotary knob 51, the associated latching plunger 17 is in engagement with the closing element 29 and the door can be opened.

Claims (5)

Electromechanical locking system for a door lock with identifier activation and a closing element for acting on a lock mechanism of the lock, wherein the closing element can be converted by an identifier activation via a actuated by an actuator coupling unit from a release into a driving state in which the closing element rotatably with one of two provided on both sides of the door handle to open the lock is connected, characterized in that the coupling unit (12) consists of two functionally identical halves, wherein the one half (13, 15, 17, 19) of the handle (9, 51) one of the door side and the other half (14, 16, 18, 19) of the handle (37, 48) is operatively associated with the other door side, and both halves (13, 15, 17, 19; 14, 16, 18, 19 ) by Identträger activation from one side or the other door side by means of the arranged on a door side actuator (33) separately from the release can be converted into the deadweight state. Electromechanical locking system according to claim 1, characterized in that the coupling units (12) each one the two handles (9, 37; 51, 48) associated prestressed latching plunger (17, 18) and one by the actuator (33) in both directions axially movable, with the latching plungers (17, 18) in operative connection coupling rod (19), wherein upon movement of the coupling rod (19) in one direction of the prestressed in this direction latching plunger (17) for producing a rotationally fixed connection with the associated handle ( 9, 51) in the closing element (29) engages and upon movement of the coupling rod (19) in the other direction of the prestressed in this direction latching plunger (18) for the production a non-rotatable connection with the associated handle (37, 48) engages in the closing element (29). Electromechanical locking system according to claim 1 or 2, characterized in that the actuator is a stepping motor (33). Electromechanical locking system according to claim 3, characterized in that the stepping motor (33) is arranged coaxially to the coupling rod (19) and its drive shaft (34) is designed as a hollow shaft (35) with an internal thread, wherein the stepper motor (33) facing the end ( 19.1) of the coupling rod (19) is provided with an external thread, so that the coupling rod (19) with the stepper motor (33) in its hollow shaft (35) and can be screwed. Electromechanical locking system according to one of claims 2 to 4, characterized in that the coupling rod (19) for the passage of electrical lines (40) is designed as a hollow shaft.

Images