The invention provides a door locking system, in particular locking mechanisms mounted inside the door leaf.

Locking mechanisms are known in many different configurations.

Door locking mechanisms known in the art, where a door leaf is mounted in a door frame arranged within a door opening in a wall of a building, so as to ensure the best closing of the door against unauthorized access, should be provided with a correspondingly safe door lock. Such door lock has to be at least one and it has to lock the door leaf in a closed position in the most effective manner when needed.

Locking of a door leaf within a door frame mounted in a wall is effected by coupling at least one, preferably several, locking elements mounted in the door leaf, for example in its face and interacting with the corresponding seats in the door frame as a result of operating closing mechanism. If there are several locking elements, these may be coupled to each other so as to displace all the locking elements in one move. This may be effected by means of a wrapping connector which may be a metal bar coupled via the lock mechanism to all the locking elements. Displacement of the wrapping connector closes or opens all the locking elements. Displacement of the wrapping connector is often effected by turning the closing key within the lock insert and transferring the force by the lock mechanism to the wrappmg connector. In such an arrangement both closing and opening of the door is effected by turning a key in the door lock. In more advanced constructions of a door lock locking is often effected automatically so that locking elements, such as hooks and pins, are displaced to a closed position automatically (without any necessity to turn a key). This occurs at the moment when closing of a door leaf is being completed in the respective door frame and often is due to the weight of a metal bar constituting a wrapping connector. Force caused by the weight of the wrapping connector is used in such constructions to displace locking elements to a closing position.

Solutions are known where the gravity force of a wrapping connector is aided by a spring so as to lock locking elements within the seat in the door frame. Also known are solutions where force necessary to lock locking elements is accumulated exclusively in a spring. Of course, unlocking of locking elements and opening of the door requires a larger force in this case than the one necessary to turn a key and open the lock. As it issues from the above discussion on the prior art, energy necessary to close a door lock automatically is accumulated during opening of the lock as a potential energy of the wrapping connector and/or a spring energy if present.

Also attempts have been made to provide automatic opening of a lock door so as to enable opening it without using the user's force as a result of a signal to identify the user. Such a signal may be a code entered into a keyboard arranged on the door or some other signal.

As a result, in the known solutions, in order to enable fulfill the above described objective, the lock has to be equipped with a suitable drive, for example in a form of an electric rotational or linear motor.

The use of an electric motor for driving locking elements of a lock requires feeding it with electric power and this may be inconvenient. One of possible ways to solve the problem consists of feeding electric power from the respective urban infrastructure. This involves a necessity to use suitable adjustment devices, such as for example an adaptor with a rectifier, as well as suitable provision of electric conductors to such movable door leaf. Electric power obtained from municipal means has a disadvantage that as a result of power failure it will not be possible to access the locked interior or access will be hindered and require additional devices to maintain power supply, such as for example UPSs.

Therefore the solutions of the prior art propose battery-type power sources. An electric battery may be built-in in such arrangement into the door leaf. This solution, although it eliminates majority of disadvantages of the solutions powered from the urban infrastructure, brings new disadvantages in the door locking system. They are such that in order to unlock the door in this kind of a system a considerable amount of electric power is needed and this entails a necessity of frequent and usually strenuous replacement or loading of the electric energy source. For this reason, the solutions with automatic door locking and unlocking are not commonly applied.

Although locking mechanisms, according to the prior art, may operate well, within the range of use intended for them, they do not allow for broader dissemination of such automatic door clocking and unlocking systems or broader use of the accessible identification systems such as fingerprint readers or mobile Smartphone-type devices.

An example of a known locking mechanism is shown in the Polish patent application No. P.406120, where three locking elements for door lock placed in a door leaf are coupled to a wrapping connector that drives them concurrently.

Thus, there exists a need for a new enhanced door locking system which uses the components of the prior art but provides a new quality in the manner in which they are used to ensure automatic door locking and unlocking, avoiding disadvantages known in the prior art.

The subject invention addresses these and other problems related to door locking systems. The object of the invention is to provide a door locking system that does not require, for performing the task of unlocking of locking elements, a large amount of electric energy, as well as to introduce new solutions in this field of the art.

A further object of the invention is to develop a locking system to enable opening of door without a key.

The object of the invention is a door locking system comprising a door leaf mounted in a door frame, provided with at least one door lock equipped with at least one locking element controlled by a drive member, where the locking element interacts with a seat arranged in the door frame. The door leaf interacts with the door frame with an activating element that drives a tensioning mechanism, transmitting movement of the door leaf to an energy accumulator coupled to a drive member of the door lock, where the energy accumulator is locked, in its tensioned state, by a locking mechanism releasable with a releasing mechanism activated by a receiver controlled from a transmitter.

Preferably, the tensioning mechanism is a movable slider seated within a slideway arranged in a door leaf and pivotally coupled to a door frame by means of an activating element in a form of a coupling link being a flat bar.

It is a preferable feature that a tensioning mechanism is a movable slider seated within a slideway, arranged in a door leaf and interacting with a door frame by means of an activating element in a form of a coupling link, being a flat bar mounted rotationally with its one end to a slider, while its other end is provided with a fork interacting with a wheel mounted in the door frame, where the activating element and the door frame are separable, and the slider is provided with a return spring abutted against the slider by its one end and abutted against the door leaf by the other end.

It is also a preferable feature that a tensioning mechanism is a movable slider, seated within a slideway, arranged in a door leaf and interacting with a door frame by means of an activating element in a form of a coupling link, being a flat bar mounted rotationally with its one end to the door frame and on its other end provided with a fork interacting with a wheel seated on a slider, where the activating element and the door frame are separable and the slider is provided with a return spring abutted against the slider with its one end and abutted against the door leaf with the other end.

Preferably, a tensioning mechanism is a movable slider, seated within a slideway arranged in a door leaf and interacting with a door frame by means of an activating element in a form of a coupling link, being a pushing rod abutting the door frame, where the activating element and the door frame are separable, and the slider is provided with a return spring, abutting the slider with its one end and abutting the door leaf with the other end.

Preferably, a tensioning mechanism is a gear wheel rotationally mounted in a door leaf and interacting with a toothed bar coupled to a movable slider seated within a slideway placed in a door leaf, where the gear wheel is coupled to an activating element in a form of a coupling link being an articulated coupling link, to a door frame, and the articulated coupling link consists of a first arm, first end of which is rigidly coupled with the gear wheel while the other end of which is rotationally coupled to the first end of the second arm, the second end of which is seated rotationally in the door frame.

Preferably, a tensioning mechanism is a gear wheel rotationally mounted in a door leaf interacting with a toothed bar, coupled to a movable slider seated in a slideway arranged in a door leaf, where the gear wheel is coupled to an activating element in a form of a coupling link being a bar rigidly coupled with its one end to the gear wheel, and with its other end slideably coupled to the door frame.

Also more preferably, a tensioning mechanism is a gear wheel rotationally mounted in a door leaf, cooperating with a toothed bar coupled to a movable slider seated in a slideway arranged in a door leaf, where the gear wheel is coupled to an activating element in a form of a coupling link being a bar rigidly coupled with its one end to the gear wheel, where its other end is abutting against the door frame, where the coupling link and the door frame are separable and the slider is provided with a return spring abutted against the slider with its one end and abutted against the door leaf with the other end.

Also a preferable feature is that a tensioning mechanism is a gear wheel rotationally mounted in a door leaf and interacting with a toothed bar coupled to a movable slider seated in a slideway arranged in a door leaf, where an activating gear wheel is arranged in a door leaf, coaxially with the gear wheel, releasably coupled to an activating element in a form of a rack arranged on the horizontal part of the door frame.

Also preferably, the return spring is abutted with its one end against the slider and with the other end it is abutted against the door leaf by means of a movable active face of the energy accumulator.

Also preferably, the locking mechanism is a lever comprising a releasing catch at one end and at the other end interacting with the releasing mechanism so that deflection of the lever by means of the releasing mechanism causes releasing the energy accumulator and transferring its energy to the driving member of the door lock.

Also preferably, the locking mechanism is coupled to a slider.

Also preferably, the releasing mechanism is a cam that releases the locking mechanism, powered via a transmission by an electric motor.

Additionally preferably, the releasing mechanism is an intermediate lever activated by a screw mechanism having a nut, powered by an electric motor.

Also preferably, the tensioning mechanism, energy accumulator, locking mechanism, releasing mechanism and receiver are accommodated within one casing placed in the door leaf.

Also preferably, the casing, comprising the tensioning mechanism, energy accumulator, locking mechanism, releasing mechanism and receiver, is secured to the face bar that covers the driving member of the door lock. Also preferably, the casing, comprising the tensioning mechanism, energy accumulator, locking mechanism, releasing mechanism and receiver, is arranged at the upper horizontal edge of the door leaf.

Preferably, the activating mechanism is a roller rotationally coupled to the slider of the tensioning mechanism, and the roller interacts with an actuating mechanism being a protrusion comprising a sliding surface inclined relative to the direction of closing the door leaf and causing displacement of the roller along with the slider in the final phase of closing the door leaf.

Also preferably, the activating element is a knee-type mechanism arranged on the edge of the door leaf and consisting of a first knee coupling link and a second knee coupling link coupled in an articulated manner by their ends, where the end of the first knee coupling link opposite to the articulated connection is pivotally coupled to the slider of the tensioning mechanism and the end of the second knee coupling link opposite to the articulated connection is pivotally coupled to the door leaf.

Preferably, the tensioning mechanism is a slide-type mechanism comprising a first pusher coupled with one of its ends to the slider of the tensioning mechanism the other end thereof being seated via a first slider in a slideway arranged in the door leaf, where the activating element is a second pusher, one end thereof being seated, means of a second slider, in a slideway arranged in a door leaf and the other end thereof being coupled rotationally to the door frame.

Also preferably, the lock is equipped with an automatic locking functionality.

Further also preferably, the transmitter is a fingerprint reader.

Preferably, the transmitted is a numeric keyboard.

Also preferably, the transmitter is a pupil reader.

Also preferably, the transmitter is an electronic key.

Also preferably, the transmitter is a voice recognition device. Also preferably, the transmitter is a radio device

Also preferably, the transmitter is device of a Smartphone-type.

Also preferably, the transmitter operates via Bluetooth transmission protocol.

Also preferably, the energy accumulator is a coil spring.

Also preferably, the energy accumulator is a gas spring.

Also preferably, the energy accumulator is an elastomeric spring.

Also preferably, the energy accumulator is coupled to a drive member of the lock being a rigid connector in a form of a flat bar, via an intermediate connector by means of an angle lever.

Furthermore preferably, the accumulator is coupled to the driving member being a rigid connector in a form of a flat bar, via an intermediate connector by means of an flexible connector in an armour.

Moreover preferably, the locking element is a pin extendable from the door leaf.

Furthermore preferably, the locking element is a hook extendable rotationally from the door leaf.

An preferable feature is that the locking element is coupled to the door lock so as it may be driven by a key independently from the energy accumulator.

An preferable feature is also that in a door leaf there are placed three groups of locking elements, in upper, central and lower parts of the door leaf.

The invention is shown in embodiments in the drawing where fig. 1 shows schematically a system in accordance with the invention, fig. 2 shows a door leaf with a slide- type tensioning mechanism according to a first embodiment, fig. 3 shows a door leaf with a slide-type tensioning mechanism according to a second embodiment, fig. 4 shows a door leaf with a slide-type tensioning mechanism according to a third embodiment, fig. 5 shows a door leaf with a slide-type tensioning mechanism according to a fourth embodiment, fig. 6 shows a door leaf with a rack-type tensioning mechamsm according to a fifth embodiment, fig. 7 shows a door leaf with a rack-type tensiomng mechanism according to a sixth embodiment, fig. 8 shows a door leaf with a rack-type tensioning mechanism according to a seventh embodiment, fig. 9 shows a door leaf with a rack-type tensioning mechamsm according to a eighth embodiment, fig. 10 shows a mechanism with a spring abutting against an accumulator, fig. 1 1 shows a releasing mechanism with a transmission, fig. 12 shows a releasing mechanism with an intermediate lever, fig. 13 shows a power transmission arrangement with an intermediate connector from a accumulator to a driving member, fig. 14 shows a door leaf with a system according to the second embodiment of the invention, fig. 15 shows a door leaf with a system according to another embodiment of the invention, with a cassette comprising elements of the system, fig. 16 shows a door leaf with a roller-type tensioning mechanism in a cross-section through the door leaf, fig. 17 shows a door leaf with a roller-type tensioning mechanism in a perspective view, fig. 18 shows a door leaf with a roller-type tensioning mechanism in a view towards the edge of the door leaf, fig. 19 shows a door leaf with a roller-type tensioning mechamsm mounted on the upper edge of the door leaf, fig. 20 shows a door leaf mounted in a door frame with a knee-type tensioning mechanism in a perspective view, fig. 21 shows a door leaf with a knee-type mechanism in an open position, fig. 22 shows a door leaf with a knee- type mechanism in a closed position, fig. 23 shows a slide-type tensioning mechanism in a cross-section through the door leaf, and fig. 24 shows a door leaf with a slide-type mechanism in a perspective view.

As shown in fig. 1 a door locking system is related to a door leaf 1 mounted in a door frame 2. A door leaf 1 should be understood as any type of a leaf or wing, mounted in a frame 2 and pivotally movable relative to the latter on hinges. This it can be also a glazed movable element, including also a window sash.

Door leaf shown in fig. 1 is a full leaf and is shown in this embodiment provided with three door locks 3, controlled by a driving member 4, being a flat bar extending along the edge of the door leaf 1 and interacting with lock 3 mechanisms. Of course, in other embodiments a door leaf 1 may be equipped with another number of door locks 3 at its vertical edges as well as at its both horizontal edges.

In the embodiment shown in fig. 1 the central door lock 3 is equipped with an insert controlled with a key.

Door locks 3 seated in the door leaf 1 are equipped in this case with locking elements 5 that are hooked up in seats 6 in the door frame 2 during locking door locks 3. In this embodiment locking elements 5 are constituted by pins extendable from the door leaf 1 and displaced linearly into the seats 6 in the door frame 2, but in other embodiments these may be hook elements that penetrate the seats 6 in the door frame 2 in a rotational movement or a movement having a linear and rotational component.

Door leaf 1 is coupled to the door frame 2 by means of an activating element 7 in a form of a coupling link that drives, with its movement related to displacement of the door leaf 1 relative to the door frame 2, a tensioning mechanism 8 which transfers the movement energy from the door leaf 1 to an energy accumulator 10. The energy accumulator 10, during displacement of the door leaf 1, accumulates thus generated energy to be used during unlocking of the door which is at the time when movement of the driving member 4 is required.

Energy accumulated in the energy accumulator 10 is locked by an interlocking mechanism 1 1 that interacts with a releasing mechanism 12 and allows it to be released in a controlled manner solely when it is required. Releasing of the energy accumulated in the energy accumulator 10 is possible at the moment of transmitting a suitable signal emitted by a transmitter 14, being under control of the user of the room lockable with the present system, to a receiver 13 arranged in a door leaf 1. Control signal transmitted from a transmitter 14 to a receiver 13 in order to unlock the door lock 3 and open the door may be a signal from diverse kinds of transmitters 14. In this embodiment the transmitter 14 is a Smartphone-type telephone which, by means of Bluetooth transmission protocol, transmits an encoded signal to the receiver 13.

Of course, the transmitter 14 may be any suitable device enabling encoding information necessary to unlock the door and capable to be received by the receiver 13. Such devices are for example a fingerprint reader, an eye pupil reader, a voice recognition device, of the owner or user of the room lockable with the door equipped with the locking system according to the invention, a numeric keyboard for entering a code or other devices, such as for example an electronic key or radio frequency remote controller.

The transmitter 14 and receiver 13 devices may operate wired, for example with a numeric keypad, or wirelessly, for example with a Smartphone.

When the door unlocking process is initiated by transmitting a signal from the transmitter 14 to the receiver 13, and upon correct identification, the releasing mechanism 12 is actuated, the latter actuates the locking mechanism 11 that maintains the energy accumulator 10 in a tensioned state. Energy accumulated in the energy accumulator 10 is transferred to the driving member 4 of the door locks 3, and this leads to unlocking of locking elements 5.

Energy accumulator 10 may be a coil spring, an elastomeric spring or, as shown in embodiments in fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 19 a gas spring.

In a locking system in accordance with the invention, energy necessary to unlock the lock is derived from displacement of the door leaf relative to the door frame and is renewed in the energy accumulator 10 upon each entering the room.

In the embodiments shown in the drawing, for example in fig. 2, the receiver 13 is provided with an electric battery, for ensuring operations of the receiver 13 as well as an electric motor 32 of the releasing mechanism 12, nevertheless due to negligible electric power consumption it may operate for 5 to 10 years and the necessity of replacement is signaled by the system suitably earlier.

In order to implement the presented operational scheme for the door locking system, several solutions may be used as the individual system components.

Fig. 2 shows a First embodiment of the invention where the tensioning mechanism 8 is a slider 15 seated within a slideway 16 arranged in a door leaf 1 in the vicinity of its upper edge. The slider 15 is movable along this upper edge of the door leaf 1, guided in a slideway 16, as a result of displacement of the door leaf 1 relative to the door frame 2. The slider 15 is rotationally coupled to one end of an activating element 7 being in a form of a metallic flat bar. The other end of the activating element 7 is mounted rotationally to the door frame 2 and the relative displacement of the door leaf 1 and the door frame 2 causes linear movement of the slider 15 within the slideway 16.

As one of the ends of the slider 15 is engaged by means of a locking mechanism 11 with an energy accumulator 10, being in this case a gas spring, at the moment when the slider 15 is moved towards a vertical face edge of the door leaf 1 the energy accumulator 10 is compressed. When the energy accumulator 10 in a form of a gas spring becomes compressed to a predetermined position, it remains in its state of readiness to operate but is held by an interlocking mechanism 1 1 so that the energy accumulator 10 remains in a state in which it is ready for transferring energy upon a predetermined signal.

Fig. 2 also show a releasing mechanism 12 that is released as a result of operation of a receiver 13 receiving a signal from a transmitter 14 which enables unlocking the interlocking mechanism 11 and transferring energy accumulated in the energy accumulator 10 to a driving member 4, moving it upwards and unlocking the door by retracting locking elements 5 of the door locks 3 from the seats 6 in the door frame 2.

In this embodiment the releasing mechanism 12 is a cam 25 that releases the locking mechanism 11, driven via a transmission 24 by an electric motor 32. This is shown in fig. 2 and in more detail in fig. 1 1. The signal from the transmitter 13 actuates the electric motor 32 which via the transmission 24 turns the transmission gear with the cam 25 and the cam 25 turns and raises one of the arms of a double-arm lever 22. At the opposite side of the double-arm lever 22 there is a releasing catch 23, the movement of which causes unlocking of the locking mechanism 11 and operation of the energy accumulator 10.

The releasing catch 23 has thus two important functions in the operation of the door locking system: firstly, as an element of the tensioning mechanism 8 engaged with the slider 15, it displaces the movable end of the energy accumulator 10 and secondly, as a result of operation of the releasing mechanism 12, it releases energy from the energy accumulator 10.

In fig. 3 a second embodiment of the invention is shown where the tensioning mechanism 8 is a movable slider 15, seated within a slideway 16, arranged in a door leaf 1 and coupled to the door frame 2 by means of an activating element 7 in a form of a coupling link, being a flat bar rotationally mounted with its one end to a slider 15 and provided on its other end with a fork 75 interacting with a wheel 76 seated in a horizontal part of the door frame 2. With the door closed, i.e. when the door leaf 1 is within the door frame 2 the fork 75 of the activating element 7 encloses a pin 76 arranged in the door frame 2. During opening of the door leaf 1 the activating element 7 in a form of a coupling link is rotated around its axis in a slider 1 and then the fork 75 at some moment moves away from the pin 76. At this moment the activating element stops turning relative to the door frame 1 , since it is mounted in a self-braking manner. So as to ensure operation of the mechanism, a slider 15 is provided with a return spring 81 abutting the slider with its one end 15 and abutting the door leaf with the other end 1. During the door opening movement a return spring 81 urges thus the activating element 7 towards the door frame by means of the slider 15. During final closing of the door leaf 1 there occurs a moment when the fork 75 begins to enclose the pin 76 and this causes that the activating element 7 turns and the pin 76 forces the slider 15, in which the end of the activating element 7 is seated, to move and to tension the energy accumulator 10.

Fig. 4 shows a third embodiment of the invention where the tensioning mechanism 8 is a movable slider 15 seated within a slideway 16 arranged in a door leaf and engaged with the door frame 2 by means of an activating element 7 in a form of a coupling link, being a flat bar mounted rotationally with its one end to a horizontal part of the door frame 2 and on its other end provided with a fork 75 interacting with a wheel 76 seated on a slider 15. Operation of the system in accordance with this embodiment of the invention is analogous as the operation according to the first embodiment but the slider with the pin 76 affixed permanently therein is displaced relative to the door leaf 1 at the moment of becoming engaged with the fork 75 of the activating member 7 rotationally seated in the door frame 2.

In a fourth embodiment shown in fig. 5, comprising substantial elements similar to the ones shown in the earlier embodiment of fig. 2, the tensioning mechanism 8 is a movable slider 15 seated within a slideway 16 arranged in a door leaf 1 and coupled to the door frame 2 by means of an activating element 7, being a rod seated slideably in a door leaf 1 and abutting the door frame 2. The activating element 7 and the door frame 2 are separable and this means that the activating 7 is abutting solely against the door frame 2 and thus the latter may influence the activating element 7 in one direction only. In order to provide a two-way movement, the slider 15 is provided with a return spring 81, abutting the slider with its one end 15 and abutting the door leaf with the other end 1. Therefore the return spring 81 pushes the slider along with the rod towards the door frame 2 as the door leaf 1 moves away from the door frame 2. In a fifth embodiment of the invention, as shown in fig. 6, the door locking system as presented in the preceding embodiments is equipped with a movable slider 15 seated within a slideway 16 arranged in a door leaf 1, where the slider 15 is coupled to a toothed bar 18 interacting with the gear wheel 17.

The gear wheel 17 is coupled to the activating element 7, being an articulated coupling link 19. The articulated coupling link 19 consists of a first arm 20 coupled with its one end rigidly to the gear wheel 17 and with its other end to the first end of a second arm 21 the other end of which is rotationally seated in the door frame 2. Movement of the door leaf 1 relative to the door frame 2 causes rotation of the gear wheel 17 seated at an axle in a door leaf 1 and displacement of the toothed bar 18 along with the slider 15 coupled therewith and seated in a slideway 16 arranged in a door leaf 1. Operation of the tensioning mechanism 8 accordmg to this embodiment is analogous to operation in the preceding embodiments.

Another, sixth embodiment of the invention is shown in fig. 7. The movable slider 15 is seated in a slideway 16 arranged in a door leaf 1. The slider 15 is coupled to a toothed bar 18 interacting with the gear wheel 17. The gear wheel 17 is coupled to an activating element 7, being a bar rigidly coupled with its one end to a gear wheel 17, and with its other end coupled slideably to the door frame 2. An activating element 7 in a form of a bar with a guiding pin 71 is slideably movable relative to the door frame 2, but its movement is limited by a groove 72 made in the door frame 2 and in which the guiding pin 71 is guided and located in the bar of the activating member 7.

Another, seventh embodiment of the invention is shown in fig. 8. A movable slider 15 is seated in a slideway 16 arranged in a door leaf 1. The slider 15 is coupled to a toothed bar 18 interacting with the gear wheel 17. The gear wheel 17 is coupled to an activating element 7, being a bar coupled rigidly with one end to the gear wheel 17, and with its second end abutting, via a roller 73 provided at its end, against the door frame 2. The activating element 7 and the door frame 2 are separable which means that the activating element 7 is abutted solely against the door frame 2, and thus the latter may influence the activating element 7 in one direction only. In order to ensure a two-way movement, the slider 15 is provided with a return spring 81 abutting the slider with its one end 15 and abutting the door leaf with the other end 1. A return spring 81 thus forces the slider 15 along with the activating element 7 via a toothed bar 18 and a gear wheel 17 towards the door frame 2 from the side where the door leaf 1 is affixed. In the embodiment of the invention shown in fig. 10 the return spring 81 may be abutted against the door leaf 1 via a movable active face of the energy accumulator 10, being in this case a movable end of a gas spring

Fig. 9 shows an eighth embodiment where a tensioning mechanism 8 is a gear wheel 17 rotationally seated in a door leaf 1, interacting with a toothed bar 18, coupled to a movable slider 15 seated in a slideway 16 arranged in a door leaf 1, where an activating gear wheel 171 is arranged in a door leaf 1, coaxially with the gear wheel 17, releasably coupled to an activating element 7 in a form of a rack 181 seated in a horizontal part of the door frame 2. When the door leaf 1 approaches the door frame 2 during closing of the door, an activating gear wheel 171 is rotated by the rack 181 and transfers the rotational movement onto the gear wheel 17 interacting with the toothed bar 18, and the latter displaces a slider 15 and thereby tensions an energy accumulator 10. This occurs over a small angle of the movement of the door leaf 1 but it suffices to transfer energy to the energy accumulator 10 and provides an advantage that a very slight movement of the door leaf 1 relative to the door frame 2 initiates a process of tensioning the energy accumulator 10.

Fig. 10 shows an enlargement of a tensioning mechanism 8 also seen in fig. 5, where between the slider 15 and a movable active face of an energy- accumulator 10 a return spring 81 is provided to urge the slider 15, along with an activating element 7 affixed thereto, towards the door frame 2 when the door leaf 1 moves away from the door frame 2 during opening of the door. Opposite movement is caused by the door frame 2 urging the activating element 7 and the slider 15 coupled thereto during closing of the door when the distance between the door leaf 1 and the door frame 2 decreases. Abutting of the return spring 81 against the movable active face of the energy accumulator 10 provides an additional advantage that rebound of the energy accumulator during unlocking of the lock presses the return spring 81 and increases tensioning thereof and enables it to push the slider with a higher force during opening of the door.

Fig. 1 1 shows an enlarged view of a releasing mechanism 12 also shown in fig. 2, fig. 3, fig. 4, fig. 5 fig. 6, fig. 7 and fig. 8, where- the releasing mechanism 12 is a cam 25 that releases the locking mechanism 1 1 and is driven via a transmission 24 by an electric motor 32. Also the releasing catch 23 of a double-arm lever 22 is shown that is abutting with its second end against the cam 25.

Fig. 12 shows in an enlarged view of a releasing mechanism 12 in another embodiment where a lever 22 of a locking mechanism 11 is released as a result of movement of an intermediate lever 28 actuated by an electric motor 32 by means of a nut 29 seated on a threaded pin coupled to the shaft of a motor 32.

Fig. 13 shows an embodiment of drive transfer from an energy accumulator 10 via an intermediate connector 9 coupled to a driving member 4 of door locks 3 by means of a flexible connector 30 seated in a guiding armour 31. This makes it possible to make a change in the movement direction in a kinematic system according to a door locking system, from a horizontal direction into a vertical one.

Fig. 14 also shows a bar 150 that covers a driving member 4 of a door lock 3. The remaining elements as the functions thereof are analogous to the ones indicated in fig. 1. Fig. 15 shows an embodiment of the invention where all the important elements of a door locking system, i.e. a tensioning mechanism 8, an energy accumulator 10, a locking element 11, a releasing mechanism 12 and a receiver 13, are accommodated within a common casing 100 placed in a door leaf 1 as one assembly. This is convenient for both technological reasons during manufacturing of a door leaf with a locking system in accordance with the invention, as well as during routine use that requires periodic servicing or repair.

Of course, as in the embodiment shown in fig. 14 also in the embodiment shown in fig. 1 the movement energy of a door leaf 1 should be provided in some other way to an energy accumulator 10 than in the case shown in fig. 1, due to the positioning of the system mechanisms in the door leaf 1.

This may be effected in various manner and one of the embodiments of this task is shown in fig. 15, fig. 16, fig. 17, fig. 18 and fig. 19.

As shown in fig. 15 the casing 100, arranged in a door leaf 1 along a vertical outer edge of the latter and housing the main elements of the system, is provided with a roller 101, being an activating mechanism 7 of the door locking system.

In fig. 16 and 17 an activating mechanism 7 with a roller 101 is shown. The roller 101 is rotationaily coupled to a slider 15 so that it can move under certain conditions. The roller 101 is mounted outside the bar 150 of a door leaf 1 and the housing 100 with the slider 15 is mounted inside the door leaf 1 at the opposite side of the bar 150. Behind the bar 150 in a door leaf 1 a driving member 4 is slideably arranged that controls locking elements 5 of the door locks 3. This is shown in fig. 18 where one may note that in the stationary bar 150 there is a slot (not indicated with a reference number) in which the axle of the roller 101 is movable.

As shown in fig. 16 and fig. 17 the door frame 2 is equipped with an actuating element 102, interacting with a roller 101 during displacement of the door leaf 1 relative to the door frame 2. The actuating element 102 is a protrusion that has a sliding face 103, inclined relative to the direction of closing of the door leaf 1 and causing displacement of a roller 101 with a slider 15 along the door leaf 1 in the final phase of closing of the door leaf 1. This displacement of the roller 101 is transferred by means of a slider 1 of the tensioning mechanism 8 to an energy accumulator 10, in this case a gas spring. In the last phase of tensioning of the energy accumulator 10 it becomes locked in a position with energy accumulated by a locking mechanism 11 which releases energy accumulated in the accumulator 10 when the door becomes unlocked.

Roller 101 as an activating mechanism 7 may bye also used in a locking system where main mechanisms, i.e. a tensioning mechanism 8, an energy accumulator 10, a locking mechanism 1 1, a releasing mechanism 12 and a receiver 13 are arranged in a door leaf 1 along its horizontal upper edge. This embodiment is shown in fig. 19. Of course, main mechanisms of the locking system may be also accommodated within a casing 100 in this case.

In the embodiment shown in fig. 19 a roller 101 being an activating element 7 is coupled to a slider 15 of the tensioning mechanism 8. The slider 15 is seated in a slideway 16 arranged in a door leaf 1 at the vicinity of its upper edge. The slider 15 may be displaced along this upper edge of the door leaf 1, guided within the slideway 16, as a result of movement of the door leaf 1 relative to the door frame 2. The slider 15 is rotationally coupled to a roller 101 which is controlled by an actuating element 102 analogous to the one shown in fig. 16 and fig. 17 but arranged on a horizontal upper edge of the door frame 2.

Since one of the ends of a slider 15 is coupled by means of a locking mechanism 1 1 to an energy accumulator 10, being in this case a gas spring, at the moment when the slider 15 is displaced towards a face vertical edge of the door leaf 1 compression of the energy accumulator 10 takes place. When the energy accumulator 10 in a form of a gas spring becomes compressed to a predetermined position it remains in a state ready to operate, held by a locking mechanism 11 so that the energy accumulator 10 remains in a state in which it is ready to transfer the energy upon a predefined signal.

Fig. 19 also shows a releasing mechanism 12 which, as a result of operation of a receiver 13 receiving a signal from a transmitter 14, causes releasing the locking mechanism 11 which enables force transfer from the energy accumulated in the energy accumulator 10 to a driving member 4, displacement of the latter vertically and unlocking the door by retracting locking elements 5 of the door locks 3 from seats 6 in the door frame 2.

In this embodiment the releasing mechanism 12 is a releasing cam that releases a locking mechanism 1 1, driven via a transmission by an electric motor.

Signal from the receiver 13 actuates the electric motor which, via a transmission, rotates the gear wheel with a cam and the cam rotates and raises one of the arms of the double-arm lever. At the opposite side of the double-arm lever there is a releasing catch the movement of which causes releasing of the locking mechanism 11 and operation of the energy accumulator 10.

Fig. 20, fig. 21 and fig. 22 show another embodiment of the invention where the activating element 7 is a knee-like mechanism 104, seated at the edge of a door leaf 1, composed of the following elements coupled in an articulated manner by their ends: a first knee coupling link 105 and a second knee coupling link 106, where the end of the first knee coupling link 105 opposite to the articulated connection is rotationally coupled to the slider 15 of the tensioning mechanism 8 and the end of the second knee coupling link 106 opposite to the articulated connection is rotationally coupled to a door leaf 1. In this embodiment of the invention the end of the second knee coupling link 106 is rotationally coupled to a bar 150 that covers the driving member 4 of the door lock 3.

Fig. 21 shows a knee-like mechanism 104, being an activating element 7, in a position that corresponds to an open position of the door leaf 1 and fig. 22 to a closed position. Since the upper end of the second knee coupling link 106, as shown in the embodiment of fig. 22, is fixed to the door leaf 1 and the energy accumulator 10 in a form of a gas sprint has displaced the slider 15 with a roller 101 to an upper position, then the articulated connection defined in the location of the engagement of the first knee coupling link 105 and the second knee coupling link 106 is arranged out of the plane of the door leaf 1. At the moment when closing of the door leaf 1 is being completed, which is at the moment when the door leaf 1 becomes arranged in the door frame 2 the articulated connection made in the location of the engagement of the first knee coupling link 105 and the second knee coupling link 106 becomes pushed in towards the door leaf 1 and this causes displacement of the roller 101 and its axle down in the embodiment shown in fig. 22 and tensioning of the energy accumulator 10 in a manner analogous to the embodiments described above.

Of course, the knee-like mechanism 104 may be used in the case where the main system elements are arranged in an upper horizontal edge of the door leaf, both within a casing 100 and without it.

Fig. 23 and fig. 24 show another embodiment of the invention where the tensioning mechanism 8 constitutes a slider-type mechanism 107 comprising a first pusher 108 coupled with its one end to a slider 15 of a tensioning mechanism 8 and with its other end seated, by means of a first slider 109, in a slideway 112 arranged in a door leaf 1 and the activating element 7 constitutes a second pusher 110 seated with one its ends, via a second slider 1 1 1 , within the slideway 112 arranged in the door leaf 1 and with its other end rotationally coupled to the door frame 2.

A first pusher 108 and a second pusher 110 of the slide-type mechanism 107 interact with each other in an abutting manner at the location of contact of the first slider 109 and the second slider 1 1 1 within the slideway 1 12, which means that the pushers are not mechanically coupled to each other. As one end of the second pusher 110 is seated rotationally within the door frame 2 but it cannot be displaced linearly, then during opening of the door leaf 1, its opposite end and the second slider 111 coupled therewith have to be displaced. Closing of the door leaf 1 causes displacement of the second slider 1 1 1 and therefore the first slider 109 and the first pusher 108 coupled thereto. The first pusher 109 is coupled to a slider 15 and its movement causes tensioning of the energy accumulator 10 and accumulation of energy used to unlock the door locking system.

It is clear that in the case where the main locking system elements are accommodated in a horizontal upper edge of the door leaf 1, namely a tensioning mechanism 8, an energy accumulator 10, a locking mechanism IT, a releasing mechanism 12 and a receiver 13, a necessity arises to transfer the movement that unlocks the locking system from the energy accumulator 10 to a driving member that extends inside the door leaf 1 along its vertical edge. This is effected for example by means of an angle lever 27 shown in fig. 19, or some other suitable solution known from the prior art.

It is clear that various embodiments presented in the specification do not cover all the possible embodiments of the invention and that the technical features shown in some embodiments may be combined with features indicated in other embodiments described here.