Door lock has coupling element between mechanical lock cylinder(s), coupling device that moves axially to move coupling device drive element to open position when mechanical lock cylinder turned from initial position to end position

The invention relates to a locking device with a housing that can be inserted into a door lock, a rotatable locking bit, an actuating element on the inside of the door and an actuating element on the outside of the door and a coupling device for rotatably connecting the actuating element on the outside of the door to the locking bit, which coupling device is designed to be axially movable between a locking division and an open position, wherein at least one mechanical lock cylinder is provided and between the mechanical lock cylinder and the coupling device a coupling element formed by a locking element connected in a rotationally fixed manner to the mechanical lock cylinder and an adjoining non-rotatable adapter element is arranged

Lock cylinder with an associated key or the like. Carries out an axial movement in the direction of the coupling device from a starting position to a certain end position, so that a drive element for the coupling device can be moved into the open position and the locking element and the adapter element are arranged in a sleeve.

The subject locking device is intended in particular for use in so-called mortise locks for doors. In addition to known mechanical locking cylinders, which are operated with the appropriate keys, electronic locking systems are also used. The advantages of electronic locking systems are, in particular, greater security. The transponders used in electronic systems, which are sent via

Radio sends a corresponding access code to the electronics of the locking cylinder are much more difficult to copy. At the same time, the access authorization can be changed much more quickly than with mechanical locking systems.

For example, EP 999 328 A1 describes an electronic lock cylinder that is particularly secure and reliable. For this purpose there is an electronically activated coupling device with the aid of which the actuating element on the outside of the door can usually be rotatably connected to the lock bit. Usually the transponder is activated at a distance from the lock cylinder of a few centimeters to a few tens of centimeters, whereupon a drive device, in particular an electromagnet, responds and a drive element on which the coupling device is arranged is moved axially. As a result, the coupling device is moved for a predetermined period of a few seconds from a locking division in which the actuating element on the outside of the door is not connected to the lock bit, into an open position in which the actuation element on the outside of the door is rotatably connected to the cam via the coupling device. This means that after the transponder has been actuated, the lock can be opened for a certain period of time via the actuating element on the outside of the door. Thereafter, the coupling device automatically switches back to the locking division and opening of the door at least via the actuating element on the outside of the door is no longer possible, since it slips and has no connection to the locking bit. The actuating element on the inside of the door is usually rotatably connected directly to the lock bit, so that the lock can always be activated from the inside of the door. In the context of the present invention, however, it is possible for the electronic locking cylinder to be equipped with a coupling device both on the inside and on the outside of the door.

No. 5 040 391 A shows a locking device of the type in question, which, however, has a relatively complex structure and does not have a lock cylinder separate from the coupling element and thus makes retrofitting difficult or impossible.

The problem with such electronic locking cylinders, however, is that emergency opening is only possible with a suitably programmed transponder. It would be possible for authorized persons, such as fire brigade emergency services, to have such transponders, but this is rejected due to a lack of security, since, for example, a

Fault in the transponder or a fault in the lock-side receiver, such as a failure of the power supply, access is impossible.

AT 413 844 Β

The object of the present invention is therefore to provide a locking device with an option, independent of the coupling device, for emergency opening by authorized personnel. In particular, an electronic lock cylinder is to be provided with an option for emergency opening by authorized personnel that is independent of the electronically activated coupling device. The present invention should be made so small that it can be used in normal mortise locks. In particular, the construction of the cylinder should correspond to the DIN 18252 standards and the supplementary standard to DIN EN 1303. The functionality and security of the normal lock cylinder, in particular the electronic lock cylinder, should not be impaired by the present invention.

The object according to the invention is achieved in that the sleeve has a link for receiving part of the locking element or an element connected to it for the defined guidance of the rotational movement of the locking element. The sleeve together with all the components it contains can be installed and removed particularly quickly in existing lock cylinders. The rotational movement of the locking element is guided in a defined manner in that the sleeve has a link for receiving part of the locking element or an element connected to it. The gate thus also defines the direction of rotation and the necessary angular range of rotation of the key or the like, which is necessary to cause such an axial movement of the adapter element that the lock can be operated. The actuation of the lock bit takes place after a corresponding rotation of the key or the like. By that actuating element on whose side the mechanical lock cylinder is attached. The actuating element is usually formed by a cylindrical knob or a buckle. Thus, without affecting the functionality of the locking device, actuation of the coupling device with the aid of a key or the like of the mechanical lock cylinder is made possible. For this purpose, the rotary movement of the key or the like is converted into an axial movement which is transmitted to the coupling device. Instead of the usual key, other mechanical devices that are introduced into the lock cylinder can also be used. The coupling element, which performs the functional connection of the mechanical lock cylinder to the coupling device, can be formed according to a feature of the invention by a locking element connected in a rotationally fixed manner to the mechanical lock cylinder and an adjoining non-rotatable adapter element, the locking element and / or or the adapter element have formations on their facing sides, so that the adapter element performs an axial movement when the locking element is rotated. This construction represents a feasible option for converting the rotary movement of the key or the like into an axial movement which acts on the coupling device. or the adapter element can be used to set in which direction of rotation of the key an axial movement should take place. The formations can be formed, for example, by hemispherical elements on the locking element, which in the initial position of the key or the like engage in corresponding recesses on the adapter element and are moved out of these recesses when the key or the like is rotated, so that the adapter element is forced to move axially will. This represents a simple and space-saving way of implementing the rotary movement of the

Key or the like. In an axial movement acting on the coupling device.

The invention is particularly applicable to locking devices in which the coupling device can be activated electronically and is arranged on the drive element of a drive device, in particular an electromagnet. Thus, with such an electronic locking device, the actuation of the electronically activatable coupling device with the aid of a key or the like is possible. of the mechanical lock cylinder without affecting the functionality of the electronic lock cylinder. Authorized persons, such as the fire brigade, are given the appropriate keys or the like for the mechanical lock cylinder so that they can open the doors equipped with an electronic lock cylinder in an emergency. The opening of the electronic

AT 413 844 B

The locking cylinder is independent of the electronic locking system, which can be reprogrammed or changed by the owner at any time. This invention overcomes one of the few disadvantages of an electronic lock cylinder. The effort involved in implementing a mechanical lock cylinder in an electronic lock cylinder is relatively low.

The mechanical locking cylinder is advantageously arranged on the outside of the door, since, for example, emergency services mainly need to open the door from the outside.

In order to ensure a reliable reversal of the axial movement of the adapter element when the key or the like is turned back into the starting position or into another position, the adapter element is connected to a restoring element, in particular a compression spring. The compression spring thus ensures that the formations on the mutually facing sides of the locking element and adapter element are pressed against one another. Instead of a mechanical compression spring, another elastic element can of course also be provided.

The element connected to the locking element can be formed by a bolt.

To increase security, the sleeve can have at least one predetermined breaking point which, if attempted to open it by force, will destroy the sleeve and thus make it impossible to open the door without a corresponding key or the like. However, it should be possible to open the door with the aid of the transponder even after mechanical destruction on the outside of the door. For this purpose, all of the components required for electronic opening, such as receiver, power supply, etc., are arranged on the inside of the door, preferably in the actuating element on the inside of the door.

As a further safety measure, a catch bolt or the like can be arranged on the adapter element and an opening receiving the catch bolt or the like can be arranged on the sleeve, so that when the adapter element moves axially against the direction of the coupling element, the catch bolt is received by the opening. In this way it can be achieved that in the event of willful mechanical destruction of the lock cylinder, the adapter element is blocked in the sleeve via the catch bolt and an axial movement in the direction of the coupling element is prevented. Of course, it is also possible to arrange several catch bolts on the adapter element and associated openings in the sleeve radially at certain angular distances from one another.

According to a further feature of the invention it is provided that a blocking device is connected to the coupling element, with which the coupling device can be blocked in at least one further position when the key or the like of the mechanical lock cylinder is turned. A further function can thus be implemented by the present invention, namely the blocking of the clutch device, in particular the electronically activated clutch device. In this further position, which causes the coupling device to be blocked, the key or the like is preferably designed to be removable so that the function can be set with the aid of the key and can be determined by removing the key.

Usually a key or the like of a mechanical lock cylinder can only be withdrawn in the starting position. In order to enable the key to be withdrawn in the end position and in a further position, the mechanical lock cylinder must be designed accordingly. Depending on the function of the locking device, it will be expedient to make the key or the like removable or non-removable in certain positions. In the event of an emergency opening with the key or the like. it is advisable that this cannot be removed in the end position, but has to be moved back into the starting position, so that opening the door without a key or the like is still not possible.

AT 413 844 Β

There are two ways of blocking, namely blocking the coupling device in the locked position, i.e. in that position in which there is no connection between the actuating element on the outside of the door and the lock bit, and blocking the coupling device in the open position, i.e. in that position in which the door outside Actuating element is rotatably connected to the coupling device.

The blocking device is formed, for example, by a groove or the like in the adapter element, in which the coupling device can be received and can be held in the blocking pitch accordingly. This setting prevents access to a door equipped with a corresponding electronic lock cylinder, for example, using a transponder. This can be done, for example, in emergency situations after the loss of a transponder and before the electronic one has to be reprogrammed accordingly

Lock become necessary. In addition, a high security area can be protected in this way, which can only be protected by a mechanical key on the one hand and a

Transponder on the other hand can be opened. In such a case, it is of course expedient not to make the key removable in this corresponding blocking position, so that both the owner of the key and the owner of the transponder have to be present at the same time to open the door. The door can only be opened according to the so-called four-eyes principle.

It is also possible to use the blocking device by an actuating element 4 on the inside of the door and an actuating element 5 on the outside of the door a drive device 8, in particular an electromagnet, is arranged. To activate the drive device 8 and thus the coupling device 6, corresponding electronics 9 are preferably contained in the actuating element 4 on the inside of the door. The electronics 9 contain a receiver, in particular a high-frequency receiver, a voltage supply and a control circuit for controlling the electromagnet as well as a time control for deactivating the electromagnet after a specified period of time. The coupling device 6 can be formed by a bracket which is carried along by a sleeve 10 connected to the actuating element 5 on the outside of the door. In that position of the coupling device 6 which corresponds to the open position, a rotation of the actuating element 5 on the outside of the door causes a sleeve 10 connected to the actuating element 4 on the inside of the door to be carried along and subsequently a movement of the locking bit 3. In order to ensure opening in emergencies even without a transponder and, for example, in the event of a fault in the electronics 9, at least from the outside of the door, according to the invention a mechanical lock cylinder 11 is preferably arranged on the outside of the door, in particular in the actuating element 5 on the outside of the door, which is operated with the help of an associated key 12 or the like. Can be operated. Between the mechanical lock cylinder 11 and the electronically activated coupling device 6, a coupling element 13 is provided which, when the mechanical lock cylinder 11 is rotated with an associated key 12 from an initial position to a specific end position, performs an axial movement in the direction of the coupling device 6 according to the arrow X. Through this

Axial movement of the coupling element 13 in the X direction moves the drive element 7 of the coupling device 6 into the open position, in which, when the actuating element 5 on the outside of the door is actuated, the locking bit 3 can be rotated and the door opened. The mechanical lock cylinder 11 is preferably arranged on the outside of the door, in particular in the actuating element 5 on the outside of the door, but can alternatively or additionally also be arranged on the inside of the door, in particular in the actuating element 4 on the inside of the door.

As can be seen better from detail II according to FIG. 1 in FIG

AT413 844B elements 14 the adapter element 15 performs an axial movement in the direction of the arrow X. For this purpose, the blocking element 14 and the adapter element 15 have formations 16, 17 on their facing sides, which can be implemented, for example, by a hemispherical elevation 16 on the blocking element 14 and a corresponding recess 17 on the adapter element 15. When turning the key 12 or the like. of the mechanical lock cylinder 11 in a certain direction, the locking element 14 follows this rotary movement, whereupon the hemispherical formations 16 on the locking element slide out of the corresponding recess 17 on the adapter element 15, whereby the adapter element 15 and the elements connected to it perform an axial movement in the direction of arrow X. The adapter element io 15 and the blocking element 14 are preferably arranged in a sleeve 18. Adjacent to the adapter element 15 there is a coupling adapter 19 and an adapter extension 20, which finally acts on the coupling element 6 with axial movement in the direction of the arrow X and finally moves it into the open position, whereby when the actuating element 5 on the outside of the door is rotated, the sleeve 10 and thus the Lock bit 3 is moved and the door can be opened. The locking element 14 can be connected to a bolt 21, which runs in a link 22 in the sleeve 18, whereby the rotational movement of the locking element 14 and thus of the key 12 and the angular range is specified. This can be seen better from the views according to FIG. 3 and FIG. In this example, the backdrop is provided over 90 ° along the circumference of the sleeve 18, so that when the

Key 12 can be caused to open the lock by 90 °. Instead of a bolt 21, part of the locking element 14 itself can also protrude into the link 22. Furthermore, the sleeve 18 can have a predetermined breaking point 23, which serves to increase security, since if force is used, the sleeve 18 breaks at the predetermined breaking point 23 and thus the locking element 14 is separated from the rest of the lock and opening is difficult.

A further safety is achieved in that on the adapter element 15 or on elements connected to it, for example on the coupling adapter 19, catch bolts 24 or the like are arranged, and the catch pin (s) 24 receiving openings 25 are arranged on the sleeve 18, so that with axial Movement of the adapter element 15 or Coupling adapter 19 against the direction of the arrow X, the catch bolts 24 snap into the openings 25 and thus the lock is blocked and no opening is possible.

In order to ensure a safe return of the adapter element 15 or the subsequent components such as coupling adapter 19 or adapter extension 20, return elements, in particular compression springs 26, 27, can be arranged.

Figures 5 and 6 show two views of the adapter element 15 according to Figure 2, wherein the formations 16, 17 can be seen. When the locking element 14 is rotated clockwise, the formations 16 on the locking element 14 move along the arrow Y in FIG. 6, whereupon the formations 16 are forced out of the formations 17 in the adapter element 15 and the adapter element 15 thus performs an axial movement. Of course, other constructions for the formations 16 on the locking element 14 and for the formations 17 on the adapter element 15 are possible.

FIG. 7 shows the coupling adapter 19 according to FIG. 2 in a sectional view. From FIG. 8, which shows a section through FIG. 7 along the section line VIII-VIII, the receptacles 28 for the catch bolts 24 and a guide groove 29 can be seen. The guide groove 29, better shown in FIG. 9, makes it possible to force a corresponding movement of the coupling adapter 19 with the aid of a corresponding guide pin 30 (see FIG. 2).

FIG. 10 shows an embodiment which is expanded compared to FIG. 2, in which the adapter extension 20 is designed such that it has a groove 31 in which the coupling device 6 can be received and can be held in the blocking position. The coupling device 6 is received in the groove 31 by corresponding rotation of the adapter extension 20. If the adapter extension 20 is in the open position via the coupling device 6

AT413 844B rotated, the coupling device 6 can also be blocked in the open position. This enables further functions of the electronic lock to be achieved.

The invention is not limited to the illustrated embodiments, which can be modified and supplemented in various ways.