Automatically locking espagnolette lock

Abstract

It is an automatically locking multi-point locking system (1) with a central lock (2) and at least one auxiliary lock (3, 4) which is coupled to the central lock (2) via at least one drive rod (5, 6), wherein the auxiliary lock (3, 4) has an auxiliary housing (10) and at least one auxiliary bolt (11, 12) adjustable in the auxiliary housing as well as a release mechanism (13) by which the auxiliary bolt (11, 12) is automatically moved into the extended locking position when the door leaf is in the closed position, wherein the central lock (2) has a central housing (8) and a central bolt (9) adjustable in the central housing (8).The lock is characterized in that the center bolt is designed as a center latch bolt (9) which has a chamfered actuating edge and is loaded with a latch spring in the direction of an extended locking position and which is adjustable between the extended locking position and a partially extended unlocking position as well as a retracted opening position, and in that the center latch bolt (9) is coupled to the release mechanism (13) of the auxiliary locking (3, 4) in such a way that, upon release, both the auxiliary bolt (11, 12) and the center latch bolt (9) are automatically extended into the respective locking position.

Description

[0001] The invention relates to an automatically locking espagnolette lock with multiple locking, with a center lock and at least one additional locking device which is coupled to the center lock via at least one drive rod, wherein the additional locking device has an additional housing and at least one additional bolt which can be adjusted in the additional housing, as well as a trigger mechanism via which the additional bolt is automatically transferred into the extended locking position when the door leaf reaches the closed position, wherein the center lock has a center housing and a center bolt which can be adjusted in the center housing, and wherein the center lock has a lock nut which can be actuated at least from the inside of the door and into which at least one actuating pin for an actuating handle, e.g. a lever handle or a panic bar, can be inserted on both sides.Preferably, the lock nut can be operated from both the inside and outside of the door, and at least one actuating pin for each actuating handle can be inserted into the lock nut on both sides.

[0002] Such a multi-point espagnolette lock is usually mounted in or on a door leaf of a pivoting door. One or more locking bars or striking plates can be arranged in the door frame, which interact with the locking elements of the espagnolette lock by engaging the locking elements of the espagnolette lock in openings in the locking bar when the door is closed. This usually involves locking both in the area of ​​the center lock and in the area of ​​the additional locking devices, which are also referred to as secondary locking devices in practice. Usually, one or at least one additional locking device is provided both above and below the center lock. The center lock and additional locking devices are attached, for example, (at the rear) to a lock faceplate, which in turn is attached to the door leaf.

[0003] The locking elements of the additional locking mechanism are designed, for example, as latch bolts. Such a latch bolt has a beveled actuating edge associated with the locking bar and is loaded by a latch spring toward an extended locking position. The latch bolt can be retracted (e.g., by means of the lock chain of the additional locking mechanism) from an extended locking position or a partially extended unlocked position into a retracted opening position, and the latch bolt projects a predetermined amount beyond the face plate in the partially extended unlocked position. Such a latch bolt, which is preferably protected against backpressure, is therefore a true locking element that must be distinguished from a simple, merely spring-loaded latch or lock latch.

[0004] The additional locking devices, on the one hand, and the center lock, which is operated via the lock follower (e.g., a handle), also known as the central lock, are connected to each other via one or more connecting rods. This means that during the unlocking process, not only the center bolt located in the central lock but also the locking elements located in the additional locking devices, in particular the deadbolts, are retracted. Alternatively, a motor-operated unlocking can also be achieved, for example, by operating an electric motor on one of the connecting rods.

[0005] In contrast, the automatic lock locks automatically as soon as the door leaf is in the closed position, via a suitable release mechanism. Within the scope of the invention, this release mechanism can, for example, be configured for magnetic release, i.e., a release magnet is provided, which is arranged, for example, in or on the frame-side locking bar. As soon as the door is closed, this release magnet triggers the automatic locking in the additional locking system. However, the invention also encompasses other, non-magnetic release mechanisms, which operate, for example, with a button or the like.

[0006] Such an automatic lock with multiple locking is known, for example, from DE 10 2008 011 551 A1. The locking element in the additional locking mechanism is a deadbolt, which is automatically released via magnetic release when the door leaf is in the closed position. The automatic locking is limited to the respective additional locking or secondary locking mechanism. This lock is characterized by its simple design and reliable function, and in particular, its reliable and secure magnetic release combined with a high level of tamper resistance.

[0007] EP 3 372 757 B1 describes a further development of the espagnolette lock known from DE 10 2008 011 551 A1, which in addition to the latch bolt in the additional locking mechanism has a swivel hook bolt as a further locking element, which is coupled to the lock chain of the additional locking mechanism in such a way that it can be moved from an unlocked position to a locked position and vice versa, whereby the swivel bolt is only moved into the locked position when the latch bolt reaches or exceeds a partially extended limit position when the door leaf moves into the closed position. The combination of a latch bolt with a swivel bolt within the additional locking mechanism ensures a particularly high degree of security. The two locking elements, namely the latch bolt on the one hand and the swivel hook bolt on the other, move into their locked position after a magnetic release.However, these locking processes are not carried out simultaneously, but rather staggered. The hook bolt is only extended when the latch bolt has already penetrated a certain distance into the strike plate. This means that the latch bolt not only locks the door but also pre-centers it, allowing the hook bolt to reliably penetrate into the area of ​​the strike plate and engage behind the strike plate or an element arranged on or within it. Pre-centering is not achieved with a simple, spring-loaded lock latch, but with a latch bolt that can assume not only a defined, fully extended and backpressure-protected locking position, but also a defined, partially extended unlocking position.

[0008] Automatic locks of the type described are also known as panic locks, which have a handle on both the inside and outside of the door leaf that operates the lock nut, such as a lever handle or a handle or panic bar fitting. Such designs are equipped, for example, with a split lock nut, in which the inside lock nut or nut half is always authorized to open for a panic function.

[0009] Special versions of an automatically locking multi-point locking system, which has a handle for opening the door on the inside and outside of the door leaf, are equipped with the option of electrically activating and deactivating the handle, and in particular the outside handle or the lock nut assigned to the outside of the door. The lock nut or the half of the nut assigned to the outside of the door can be coupled to the lock mechanism via an electrically operated element, so that the option of opening the door from the outside using the outside handle can be electronically controlled. Such special locks are primarily used in commercial buildings, e.g. in hospitals, fire doors, etc. Using an electronic switching signal, the outside handle nut can be coupled to or uncoupled from the unlocking mechanism. In the coupled state, the door can be easily opened even after automatic locking, e.g.Unlock and open a handle. When disengaged, the outside handle, for example, performs an idle stroke, making it impossible to enter the building or room from the outside. This makes it possible to control access remotely with such special locks with electronic coupling.

[0010] In practice, a design of an automatically locking multi-point locking system is known in which the trigger for the automatic locking is integrated into the center lock, namely as a mechanical release button positioned between a conventional center deadbolt and a cross latch. As soon as the release button is pressed by the locking part or the locking bar when the door leaf is swung closed, and the latch of the center lock extends into the corresponding recess in the locking part, both the center deadbolt and the locking elements of the secondary locking devices are extended. When the door is opened using the activated handle, the locking elements are first retracted and the lock of the latch or cross latch is released, allowing the door leaf to be opened.

[0011] In another embodiment of an automatic lock with multi-point locking, a latch bolt is provided as a locking element in both the central lock and the secondary locks. Each of these latch bolts is equipped with an integrated release button for triggering the automatic locking. If these buttons are pressed by the locking element when the sash is swung closed, the latch bolts extend completely. When the door is opened using the activated handle, the latch bolts of all locking units are retracted synchronously.

[0012] Based on the prior art, the object of the invention is to create an automatically locking espagnolette lock with multiple locking of the type described above, which is characterized by optimized function while at the same time offering high security and preferably low manufacturing and assembly costs.

[0013] To achieve this object, the invention teaches in a generic espagnolette lock of the type described at the outset, in which the trigger mechanism for the automatic locking is integrated in the additional locking, that the center bolt of the center lock is designed as a center latch bolt, which has a beveled actuating edge and is loaded with a latch spring in the direction of an extended locking position and which is adjustable between the extended locking position and a partially extended unlocking position as well as a retracted opening position and that the center latch bolt is connected to the trigger mechanism of the additional locking (orone of the additional locking devices) in such a way that when the additional locking device (or one of the additional locking devices) is triggered, both the additional bolt and the central bolt and consequently the central latch bolt are automatically extended into the respective locking position.

[0014] According to the invention, an automatic locking of the espagnolette lock with multiple locking is created, which has a latch bolt as the locking element in the center lock, without an additional or separate release mechanism, e.g. a release button, being arranged in the area of ​​the center lock, e.g. in the faceplate or in the latch bolt itself. Rather, the automatic locking for the center lock is triggered via the release mechanism integrated into the additional locking (secondary locking). When the door leaf is swung closed, the additional bolt of the additional locking is extended into the locked position, e.g. by magnetic release (by moving the lock chain). The center latch bolt in the center lock is then also extended automatically, without the need for an additional release mechanism in or on the center lock case to release the center latch bolt.

[0015] Preferably, the espagnolette lock has not just one additional locking mechanism in addition to the center lock, but two additional locking mechanisms, i.e., an upper additional locking mechanism and a lower additional locking mechanism. Both additional locking mechanisms can each be equipped with a release mechanism for the respective additional locking mechanism. However, one of the additional locking mechanisms, e.g., the lower additional locking mechanism, is coupled to the center lock in the manner according to the invention in order to also realize the automatic locking of the center lock or its release.

[0016] The center bolt of the center lock is designed according to the invention as a latch bolt which, in its basic position when the door is open in the partially extended position, projects beyond the faceplate by a first amount of, for example, 10 mm. When the door leaf moves into the closed position, the latch bolt is automatically locked by a second amount of, for example, 20 mm (in the extended locking position). When the door is opened using, for example, a handle and consequently by turning the lock follower, both the center latch bolt and the additional bolts are fully retracted so that the door leaf can be opened. If the handle is released when the door is open, the center latch bolt moves into its partially extended basic position with, for example, a projection of approximately 10 mm.

[0017] In a preferred embodiment, the release mechanism provided in one or both additional locking mechanisms is designed for magnetic release. The additional locking mechanism can have an additional lock chain which is displaceable in the additional housing in the longitudinal direction of the lock, which is connected to the drive rod and with which the additional bolt can be retracted from the extended locking position or from a partially extended unlocking position (basic position) into the retracted opening position when the drive rod is displaced in the unlocking direction, wherein the additional lock chain is held by a locking element in the, for example, raised unlocking position, and the locking element is actuated for automatic locking by, for example, aA release magnet arranged in or on the door frame or a locking strip can be actuated in such a way that the blocking element releases the additional lock chain, so that the additional bolt is automatically transferred into the extended locking position. In this respect, the locking units of the applicant known from DE 10 2008 011 551 A1 and EP 3 372 757 B1 can be used for the design of the additional locking devices. Consequently, a magnetic release is preferably implemented, which is characterized by a high degree of security against manipulation and ease of use. In principle, however, alternative release mechanisms can also be used.

[0018] The center lock has a center lock chain that can be moved in the center housing in the longitudinal direction of the lock (i.e., in the longitudinal direction of the face plate). This chain is connected to the drive rod and allows the center latch bolt to be retracted from the extended locking position or the partially extended unlocking position into the fully retracted opening position when the drive rod is moved in the unlocking direction. As the additional lock chain is released and moved, the center lock chain is also moved via the drive rod. This automatically or independently moves the center latch bolt into the extended locking position.

[0019] In particularly preferred embodiments, the center lock chain (which can be moved in the longitudinal direction of the lock) is positively coupled via the drive rod (or via just one of the drive rods) in both actuation directions to the additional lock chain of the additional locking device (or just one of the additional locking devices). A displacement of the center lock chain or the additional lock chain in any longitudinal direction necessarily leads to a displacement of the chain coupled via the drive rod in the same direction. Consequently, if the additional locking devices are extended by moving the additional lock chain, the center bolt is also necessarily extended by moving the coupled center lock chain. If one of the bolts is retracted by moving the respective chain, the other bolt is also necessarily retracted. This certainly applies to the coupling of the center lock with one of the additional locks.If two additional locking devices are implemented, it is sufficient to couple only one of the additional locking devices with the center lock in the manner described, while the other additional lock locks independently of the center lock.

[0020] A particularly advantageous embodiment is one in which a positive coupling of the center lock chain and the additional lock chain is implemented, but in which the center lock chain is decoupled from the center latch bolt when the center latch bolt is (forcefully) pushed in. If the center latch bolt is then properly retracted, e.g., by actuation with a handle, the additional bolts are also retracted in the manner described. However, if the center latch bolt is forced in with a locked door—in any way—this does not unlock the additional locks, since the center latch bolt is decoupled from the center lock chain in this direction.

[0021] For this purpose, the center lock chain, which can be moved within the center housing, is preferably coupled to the center latch bolt via a rotatable central driver, preferably via a latch lever, e.g., a pivoting latch lever, which additionally acts on the center latch bolt. Details are explained by way of example in the description of the figures.

[0022] Particularly preferably, the center latch bolt is secured in the (fully extended) locking position by at least one anti-return device. A design in which the center latch bolt is protected against multiple reversal by multiple anti-reversal devices is characterized by particularly high tamper and burglary protection.

[0023] A push-back device, e.g., a first push-back device, can be formed by the latch lever, which, in a dead-center position, rests against the center latch bolt, e.g., against its latch bolt head. Alternatively or additionally, a push-back device, e.g., a second push-back device, can have a spring-loaded safety slide, e.g., which engages behind a locking edge of the center latch bolt, e.g., its bolt shaft, and thus secures it against being pushed back. The safety slide can be actuated by the center lock chain against the spring force to release the push-back device, e.g., the second push-back device. The latch lever can be pivoted with the central driver to release the push-back device, e.g., the first push-back device.

[0024] To increase safety, the driver is decoupled from the center latch bolt when the center latch bolt is pushed in, so that the forceful pushing in of the center latch bolt cannot be transferred to the additional locking devices.

[0025] Overall, the espagnolette lock according to the invention is characterized by particularly high levels of tamper-evident and, consequently, burglary protection. This is especially true due to the implemented anti-return device, and especially in the case of multiple anti-return devices, especially since the locking elements of the secondary locking devices can also be designed with anti-return devices. This will be discussed further below.

[0026] Activation via the magnets integrated into the frame also provides a high level of protection against tampering, as manual activation via hand-pressable pushbuttons is avoided. Eliminating the need for an additional pushbutton mechanism in the center lock case further reduces component and assembly costs. Eliminating a separate release mechanism in the center lock, and in particular the additional pushbutton mechanism in the center lock case, also results in a very compact design, allowing the creation of a particularly compact center lock case and / or alternatively making space available in the center lock case for other functions. The inventive latch bolt control of the center latch bolt increases the achievable bolt counterpressure forces and thus ensures additional security and increased burglary classifications.The functional principle also allows for the use of an additional electric motor drive, which can be used to unlock the door by coupling the electric motor to one of the connecting rods. The invention therefore also optionally provides for the use of an electric motor drive, which can be coupled to one of the connecting rods in a known manner.

[0027] What is particularly interesting is the fact that the espagnolette lock according to the invention can be used with secondary locking devices of a generally known design.

[0028] Thus, it is within the scope of the invention to use a secondary locking system that has (only) a latch bolt as its locking element. Optionally, a secondary locking system can be used that has multiple locking elements, e.g., both a latch bolt and a hook bolt. It is always advantageous to equip such secondary locking systems with a magnetic release.

[0029] In one possible embodiment, the lock nut in the center lock, which retracts all locking elements of the multi-point locking system by rotation, can be designed as a one-piece lock nut. Particularly in an embodiment as a panic lock, the lock nut can be designed as a split lock nut with an outer nut assigned to the outside of the door and an inner nut assigned to the inside of the door. The inner nut, as a panic nut, is permanently coupled to the lock mechanism for retracting the center bolt and the additional bolt.

[0030] Both with a one-piece lock nut and a two-piece lock nut, the multi-point locking system can be equipped with remote activation, e.g. via an electronic switching signal, in order to remotely activate and deactivate access or the opening option of the espagnolette lock from the outside.

[0031] In a design with a one-piece lock follower, this lock follower can be coupled to the lock mechanism via a remotely activated coupling element to retract the central deadbolt and the additional deadbolt, and can be decoupled from the lock mechanism. In the coupled position, the lock follower is coupled to the lock mechanism, so that the deadbolts can be retracted by operating the handle, e.g., the outside handle. In the decoupled position, the lock follower, and thus also any handle connected to the lock follower, performs an idle stroke without retracting the deadbolts.

[0032] In a version with a split lock follower, the inner follower serves as a panic follower and is permanently coupled to the lock mechanism for retracting the center bolt and the additional deadbolt. The outer follower can be coupled to and decoupled from the lock mechanism via the remotely activated coupling element. Opening the door with the outside handle is only possible after activation, which allows it to be engaged temporarily or permanently.

[0033] What is interesting in this context is that the center lock case of the espagnolette lock according to the invention, due to its compact design without a separate release mechanism in the center lock case, provides space for the integration of the remotely activated coupling device.

[0034] The activatable coupling element can be designed, for example, as a pivoting coupling lever. The coupling element can be moved from a deactivated uncoupling position to an activated coupling position and vice versa by remote actuation, e.g., via a drive. In the coupling position, the coupling element couples the lock nut or its outer nut with the central driver. In the uncoupling position, the coupling element decouples the lock nut from the central driver. Details are explained using an example in the description of the figures.

[0035] The invention is explained in more detail below with reference to drawings, which merely represent exemplary embodiments. They show: Fig. 1A an embodiment of a drive rod lock according to the invention in a first functional position (basic position with the door open), Fig. 1B the drive rod lock according to Fig. 1Ain a second functional position (locking position with the door closed), Fig. 1Cthe espagnolette lock according to Fig. 1A in a third functional position (fully retracted locking elements, opening position), Fig. 2 the center lock of the object according to Fig. 1A in an exploded view from the front, Fig. 3 the object according to Fig. 2 in an exploded view from the rear, Fig. 4A and 5A the center lock in the functional position according to Fig. 1A in two different views, Fig. 6A, 7Athe additional lock in the functional position according to Fig. 1A , Fig. 4B, 5Bthe center lock in the functional position according Fig. 1B , Fig. 6B, 7Bthe additional lock in the functional position according to Fig. 1B , Fig. 4C, 5Cthe center lock in the functional position according to Fig. 1C , Fig. 6C, 7Cthe additional lock in the functional position according to Fig. 1C, Fig. 8A to 8Fine section of the center lock in different functional positions, Fig. 9a modified embodiment of a drive rod lock according to the invention with only one additional locking mechanism.

[0036] The figures show an automatically locking espagnolette lock with multiple locking points. Figures 1A, 1B, and 1Cshow a drive rod lock 1 that can be mounted on a door leaf in different functional positions, which on the one hand has a central center lock 2 and on the other hand two additional locking mechanisms 3, 4, namely an upper additional locking mechanism 3 and a lower additional locking mechanism 4, which are coupled to the center lock 2 via drive rods 5, 6, namely an upper drive rod 5 and a lower drive rod 6. The center lock 2 and the additional locking mechanisms 3, 4 are fastened to the rear of a lock face 7, which in turn is mounted on the door leaf. At least one locking strip is fastened to a door frame (not shown), which has perforations or openings into which the locking elements of the drive rod lock 1 engage during locking.

[0037] The center lock 2 has a center housing 8 fastened to the lock face 7 and a locking element 9 which is adjustable in the center housing 8 and is referred to as the center bolt 9. The two additional locks 3, 4 each have an additional housing 10 fastened to the lock face 7 and one or more additional bolts 11, 12 each. The figures show an embodiment in which each additional lock has two locking elements, namely a latch bolt 11 and a pivoting hook bolt 12. Furthermore, each of the additional locks 3, 4 has a release mechanism 13, via which the additional bolts 11, 12 of the additional locks 3, 4 are automatically transferred into the extended locking position when the door leaf moves into the closed position. In the embodiment, the release is implemented as a magnetic release. For this purpose, in the area of ​​the door frame, e.g.Release magnets 14 are arranged in the respective locking bar, for example. Fig. 1B are merely indicated. As soon as the door leaf moves into the closed position, the additional locking devices 3, 4 enter the effective range of the release magnets 14, thus triggering the automatic locking mechanism. This will be discussed in more detail below.

[0038] In any case, the locking of the lock 1 always occurs automatically, without the need for manual or electric motor actuation by a user. The lock and door can be unlocked and opened by operating a handle from the outside or inside of the door. For this purpose, in the exemplary embodiment, a lock follower 15 is provided in the center lock 2, which can be operated from both the outside and inside of the door. An actuating pin (not shown) for a handle or panic bar is inserted into both sides of the lock.

[0039] In the detailed representations of the Figures 2 to 8an embodiment of a connecting rod lock 1 with a panic function is shown, which is provided with a multi-part or split lock nut 15, which on the one hand has an outer nut 15a assigned to the outside of the door and on the other hand has an inner nut 15b assigned to the inside of the door. The inner nut 15b, as a panic nut, is permanently coupled to the lock mechanism for retracting the bolts 9, 11, 12. The outer nut 15a is not permanently coupled to the lock mechanism, but in the illustrated embodiment it is coupled via a remotely activated coupling element 16 in order to enable the door to be opened from the outside. This will also be discussed below. In any case, actuating the inner nut 15b always completely unlocks the connecting rod lock, i.e. all locking elements 9, 11, 12 are completely retracted (into the respective lock housing 8, 10 orbehind the face plate 7) to allow the door to be opened.

[0040] The structure and functioning of the additional locking devices 3, 4 are generally known. These can, for example, be additional locking devices according to EP 3 372 757 B1. The additional locking device 3, 4 has at least one locking element, which is particularly preferably a latch bolt 11. In addition, the aforementioned swivel hook bolt 12 is provided in the illustrated embodiment. In the additional housing 10, a lock chain 17 is provided which is displaceable in the longitudinal direction L of the lock. This lock chain is referred to as the additional lock chain 17 and is connected to the respective drive rod 5, 6 and with which the additional bolt or bolts are displaced from the extended locking position ( Fig. 1B ) into the retracted opening position ( Fig. 1C) is retractable. The additional lock chain 17 is held in the unlocked position by a locking element 18, and the locking element 18 can be actuated for automatic locking by a release magnet 14 arranged in or on the door frame or the locking strip in such a way that the locking element 18 releases the additional lock chain 17, so that the additional bolt 11, 12 is automatically transferred into the extended locking position. The latch bolt 11 can also be released from the extended locking position ( Fig. 1B ) or from a partially extended unlocking position ( Fig. 1A ) into a retracted opening position ( Fig. 1C ) retractable. This shows Fig. 1AThe partially extended unlocking position, which can also be referred to as the basic position, in which the spring-loaded latch bolt 11 of the additional locking device projects a predetermined amount from the lock housing 10 and over the face plate 7. As the door is closed, the latch bolt 11 is pushed back into the lock housing 10 against the force of the spring. At the same time, the automatic release takes place via the magnetic release, so that the latch bolt 11 reaches the fully extended locking position, which is Fig. 1B is shown. Additionally, the swivel hook latch 12 is extended. This mechanism, which will be discussed in more detail below, is generally known.

[0041] Of particular importance within the scope of the invention are the structure and function of the (in Figures 2 and 3shown in an exploded view) of the center lock 2 and its interaction with the additional locking devices 3, 4. This is because the center bolt 9 is designed according to the invention as a center latch bolt 9 which - like the latch bolts 11 of the additional locking devices 3, 4 - has a beveled actuating edge and is loaded by a latch spring in the direction of an extended locking position and which is adjustable between the extended locking position and a partially extended unlocking position as well as a retracted opening position (cf. Figures 1A, 1B and 1C). It is now of particular importance that the locking of the center lock 2 is also realized via the additional locking device, namely in the exemplary embodiment via the lower additional locking device 4. For this purpose, the center latch bolt 9 is coupled to the release mechanism 13 of the (lower) additional locking device 4 in such a way that upon release, not only the additional locking device 11, 12 or the several additional locking devices, but also the center latch bolt 9 is automatically extended into the locking position, which in Fig. 1B is shown.

[0042] The Figures 4A and 5A show the center lock 2 in the partially extended unlocking position and consequently in the basic position from two different views. Figures 6A and 7A show the additional locking mechanism 3, 4, e.g. the lower additional locking mechanism 4, in the same functional position as the Fig. 1A corresponds.

[0043] The center lock 2 has a center lock chain 19 that can be moved in the center housing 8 in the lock's longitudinal direction L. In practice, this chain is also referred to as a connecting rod slider and is connected to or interacts with the connecting rods 5, 6. The center lock chain is moved, for example, by actuating the handle, so that not only the center bolt 9 but also the additional locking elements 11, 12 are retracted. This retracted functional position, in which the door can be opened, is shown in the Figures 4C and 5C or 6C and 7C, which are the Fig. 1C are equivalent to.

[0044] In the course of the Fig. 1B The automatic locking mechanism shown then reaches both the additional locking devices 3, 4 and the center lock 2 the positions shown in the Figures 4B and 5Bas well as 6B and 7B. As already mentioned, the automatic locking of the center lock 2 is triggered by one of the additional locks, e.g., the lower additional lock 4. During the release and displacement of the additional lock chain 17, the center lock chain 19 is also displaced via the (lower) drive rod 6 and thus the center latch bolt 9 is automatically or automatically moved into the Figures 4B and 5B The locking position shown is transferred. For this purpose, the center lock chain 19 is positively coupled in both directions to the (lower) additional lock chain 17 via the drive rod 6.

[0045] The lock chain 19 is therefore rigidly connected to the lower drive rod 6. This is e.g. Fig. 4Ashown. The connection can be implemented, for example, such that a projection 19a of the center lock chain 19 engages in a corresponding recess at the upper end of the lower drive rod 6. In contrast, no forced coupling in both directions is realized between the center lock chain 19 and the upper drive rod 5. This is because the upper drive rod 5 only interacts with the center lock chain 19 in one direction, namely during unlocking, when the center lock chain 19 is moved upwards. In the illustrated embodiment, the upper drive rod 5 rests with its lower end loosely on the center lock chain 19 or on the safety slide 21 also provided in the embodiment, with the safety slide 21 in turn resting loosely on the upper end of the center lock chain 19. During unlocking, the center lock chain 19 therefore also acts on the upper drive rod 5.However, with automatic locking, the self-locking of the upper additional locking device 3 does not affect the locking of the center lock. As explained, the automatic locking of the center lock 2 is realized in the exemplary embodiment via the lower additional locking device 4. However, an arrangement in which the center lock is triggered via the upper additional locking device would also be possible.

[0046] The coupling of the center lock chain 17 with the center bolt 9 is effected via a rotatable, central driver 20, which acts on the bolt 9 via a pivoting latch lever 21. If the door leaf reaches - as in Fig. 1B shown - into the closed position and thus into the area of ​​the release magnets in the door frame, the locking elements 18 provided in the additional locking devices 3, 4, e.g. locking pins, are actuated in such a way that they release the lock chain 17, which then extends from the Figures 6A, 7A shown basic position into the Figures 6B, 7B The locking position shown is lowered. This automatically extends the additional latch bolt 11 and the swivel bolt 12 and also provides a back pressure protection. With the lowering of the (lower) additional lock chain 17, the connected lower drive rod 6 is also lowered, which in turn lowers the center lock chain 19 in the center lock. This pivots the central driver 20, which, via the latch lever 21, fully extends the center latch bolt 9, so that the Figures 4B and 5BThe functional position shown is achieved. It is interesting in this context that not only the additional locking devices 3, 4, but also the center lock 2 are protected against backlash in this locked position, and preferably multiple backlashes. A first backlash protection is provided by the latch lever 21, which, in a dead center position, rests against the center latch bolt 9, namely against its latch bolt head (cf. Fig. 5B ). A second push-back safety device is implemented by a spring-loaded safety slide 22, which, for example, with its safety projection 22' engages behind a locking edge 23 of the center latch bolt, e.g. its locking shaft, and thus secures the center latch bolt against being pushed back. This is shown in Fig. 4Bvisible. To release the first anti-return device, the latch lever 21 is pivoted with the central driver 20 during the unlocking process. To release the second anti-return device, the safety slide 22 is moved by the center lock chain 19 against the spring force.

[0047] The sequence of the locking function by means of the center latch control and the back pressure protection are also shown in detail based on a comparative analysis of the Figures 8A to 8F recognizable. Fig. 8A shows a section of the center lock 2 in the locked position with the latch bolt 9 fully extended. If, for example, the latch bolt 9 is pushed in during an attempted manipulation, the two push-back devices are activated. Fig. 8B It can be seen that the latch bolt 21 cannot be pushed in or can only be pushed in by a small amount of a few millimetres. Fig. 8CHowever, in this functional position, the lock can be unlocked, for example, via the outer nut. This removes the anti-return device. Fig. 8D shows a functional position in which the outer nut 15a is rotated by approximately 10°, so that the center lock chain 19 is raised by approximately 2 mm. This deactivates the two latch bolt locks. The outer nut 15a can be rotated further so that, according to Fig. 8E the chain 19 is raised by approximately 7 mm and the latch bolt 9 is retracted by approximately 14 mm. Fig. 8F shows the fully retracted functional position, in which the outer nut 15a is turned to the end stop and the chain 19 is raised by approximately 12 mm, so that the latch bolt 9 is fully retracted by, for example, 20 mm.

[0048] Prerequisite for the lock to be able to move over the Fig. 8A to 8FThe outer nut 15a shown can be unlocked by a corresponding electrical or remote activation. As already mentioned, the inner nut 15b is permanently coupled to the lock mechanism as a panic lock for retracting the bolts. However, the outer nut 15a can be coupled and uncoupled from the lock mechanism via a remotely activated coupling element 16. The activatable coupling element 16 is designed in the exemplary embodiment as a pivotable coupling lever 16. The function of this coupling lever 16 becomes clear from a comparative analysis of the Figures 8A and 8B on the one hand with the Fig. 8C on the other hand. The Figures 8A and 8B show the clutch lever 16 in the disengaged (lower) functional position. In Fig. 8C the clutch lever 16 is moved into the engaged functional position. If the outer nut 15a were in the functional position Fig. 8AIf the locking lever 21 were rotated, this would not result in a rotation of the locking lever 21 and thus in unlocking. In the engaged position, however, the outer nut 15a is coupled to the central driver 20 and thus also to the locking lever 21 via the upwardly pivoted coupling lever 16.

[0049] The activation and deactivation of this coupling element 16 is carried out remotely via, for example, an electric motor, which can be referred to as a coupling motor 24 and which, for example, Fig. 4B This clutch motor 24 operates on the Fig. 4B clutch lever 16 shown, whereby the Figures 4B and 5B the clutch lever 16 in the disengaged position. In the functional position according Figures 4B and 5Bunlocking the lock would therefore only be possible via the inside handle 15b and not via the outside handle 15a. However, via the clutch motor 24, the clutch lever 16 can be pivoted and moved into the effective range of the lock nut 15a, so that the outer lock nut 15a is coupled with the central driver 20, as well as in particular in Figures 8C to 8F is shown.

[0050] Of particular importance in the espagnolette lock according to the invention is the automatic release via one of the additional locking devices 3, 4, so that not only the additional locking devices but also the center lock 2 are locked without the need for a separate release mechanism in the center lock. This enables a particularly compact design of the center lock. Furthermore, compared to center locks with their own release mechanism, additional space is created, which can be used, for example, for the integration of the coupling function and, in particular, for the integration of the electric motor.

[0051] Of particular importance here is the forced coupling of one or both additional locking devices (e.g., only the lower additional locking device 4) with the center lock 2, so that the center lock chain 19 is forcedly coupled in both directions with the additional lock chain 17 of the lower additional lock 4 via the drive rod 6. However, it is advantageous that the center lock chain 19 is decoupled from the center latch bolt 9 when the center latch bolt 9 is forcibly pushed in. However, a free passage is not realized between the center lock chain 19 and the drive rod 4, but between the center latch bolt 9 and the center lock chain 19.

[0052] The center lock is also shown in an exploded view in the Figures 2 and 3 so that the individual mechanical components are clearly visible. Figures 2 and 3The structural design of the essential levers and in particular the structural design of the intermediate lever 20 and its interaction with the lock nut halves 15a and 15b are therefore clearly evident.

[0053] As already mentioned, the figures show an embodiment in which the secondary locking devices are each equipped with two locking elements 11, 12, namely a latch bolt 11 on the one hand and a swivel hook bolt 12 on the other. This embodiment is also described, for example, in EP 3 372 757 B1.

[0054] Alternatively, within the scope of the invention, an additional locking device with only one locking element, e.g., only one latch bolt 11, can also be used, as described, for example, in DE 10 2008 011 551 A1.

[0055] Alternatively, secondary locking devices can also be used that are equipped with a mechanical release rather than a magnetic one. It is important, however, that the center lock itself is not equipped with its own release mechanism; instead, the locking of the center lock is always triggered via one of the additional locking devices.

[0056] The Figures 1A, 1B and 1C show a preferred embodiment of a drive rod lock 1 according to the invention, which has several additional locking mechanisms 3, 4, namely an upper additional locking mechanism 3 and a lower additional locking mechanism 4. As described, the automatic or self-locking of the center lock 2 is effected via only one, namely the lower additional locking mechanism 4.

[0057] In contrast, Fig. 9a modified, second embodiment of a drive rod lock 1 according to the invention, which has only one (single) additional locking mechanism 4, which in this embodiment is arranged below the center lock 2. The center lock 2 and the lower additional locking mechanism 4 can be designed in this embodiment in the same way as in the embodiment according to Figures 1A, 1B and 1C . The explanations regarding the structure and functioning and the interaction of the central lock 2 and the lower additional locking device 4 therefore apply equally to the embodiment according to Fig. 9 . This shows Fig. 9 the espagnolette lock 1 in the locked functional position according to Fig. 1B .

[0058] Another interesting feature of the illustrated designs is that the exterior lock follower can be activated and deactivated via remote control, allowing, for example, the access options of a door in a commercial property to be specifically varied remotely. A panic release is always possible via the interior handle.

[0059] As an alternative to the illustrated embodiment with a split lock nut, the invention can also be implemented in a lock with a one-piece lock nut, which can also be provided with the described coupling lever without a panic function, via which the one-piece lock nut can then be temporarily coupled to and uncoupled from the lock mechanism.

[0060] There are various options for powering the clutch motor and transmitting the signals, e.g., from the door frame side to the lock case via cable connections or via plunger contacts. Alternatively, designs without cabling can be implemented, in which the power is supplied via an inductive interface. The transmitter unit can be installed in the frame-side locking bar, and the receiver unit can be integrated into the center lock case. Furthermore, the system according to the invention can be implemented in the generally known "working current" and "closed current" variants. In the working current variant, a signal is applied continuously or for a desired period of time, so that the follower halves are coupled or the one-piece follower is engaged, and the door can be opened from the outside. Access from the outside is granted when the power is applied, and locking from the outside occurs when no signal is present.Alternatively, a fail-safe option can be configured during installation. This option provides permanent power to the lock, but the outside handle is disengaged, preventing access. In an emergency, such as when a fire alarm system shuts off the power, the outside handle is engaged.

[0061] Of particular importance is the aforementioned use of a deadbolt in the center lock, preferably without any additional locking elements in the center lock. This deadbolt is not fully retracted in its basic position like a deadbolt, but deliberately protrudes a predetermined amount beyond the face plate. A mechanism for the usual locking of a traditional deadbolt is unnecessary. Furthermore, a deadbolt allows for a better translation of the longitudinal movement of the lock chain into the perpendicular movement of the deadbolt.

Claims

1. Automatic locking espagnolette lock (1) with multiple locking, with a center lock (2) and at least one additional lock (3, 4) which is coupled to the center lock (2) via at least one espagnolette (5, 6), wherein the additional lock (3, 4) has an additional housing (10) and at least one additional bolt (11, 12) which can be adjusted in the additional housing, as well as a release mechanism (13) via which the additional bolt (11, 12) is automatically transferred into the extended locking position when the door leaf reaches the closed position, wherein the center lock (2) has a center housing (8) and a center bolt (9) which can be adjusted in the center housing (8), wherein the center lock (2) has a lock nut (15) which can be actuated at least from the inside of the door and into which at least one actuating pin for an actuating handle, e.g. B. a push button or a panic bar, can be inserted, characterized by thatthe central bolt is designed as a central latch bolt (9) which has a bevelled actuating edge and is loaded by a latch spring in the direction of an extended locking position and which is adjustable between the extended locking position and a partially extended unlocking position as well as a retracted opening position, and that the central latch bolt (9) is coupled to the triggering mechanism (13) of the additional locking device (3, 4) in such a way that, upon triggering, both the additional locking device (11, 12) and the central latch bolt (9) are automatically extended into the respective locking position.

2. Espagnolette lock according to claim 1, wherein the lock nut (15) can be actuated from both the inside and the outside of the door, and at least one actuating pin for each actuating handle, e.g., a handle or a panic bar, can be inserted into the lock nut on both sides.

3. Espagnolette lock according to claim 2, characterized in that the lock nut (15) is designed as a split lock nut with an outer nut (15a) assigned to the outside of the door and an inner nut (15b) assigned to the inside of the door, wherein the inner nut (15b) is permanently coupled as a panic nut to the lock mechanism for retracting the central bolt (9) and the additional bolt (11, 12), and wherein the outer nut (15a) can be coupled to and uncoupled from the lock mechanism for retracting the central latch bolt (9) and the additional bolt (11, 12) via a coupling element (16) that can be activated, for example, by remote control.

4. Espagnolette lock according to claim 1 or 2, characterized in that the lock nut (15) is designed as a one-piece lock nut which can be coupled to the lock mechanism for retracting the central latch bolt (9) and the additional bolt (11, 12) and can be uncoupled from the lock mechanism via a coupling element (16) which can be activated, for example, remotely.

5. Espagnolette lock according to one of claims 1 to 4, characterized in that the trigger mechanism (13) provided in the additional locking device (3, 4) is designed for magnetic triggering.

6. Espagnolette lock according to one of claims 1 to 5, characterized in thatthe additional locking mechanism (3, 4) has an additional locking chain (17) which is displaceable in the additional housing (10) in the longitudinal direction (L) of the lock, which is connected to the drive rod (5, 6) and with which the additional bolt (11, 12) can be retracted from the extended locking position (or a partially extended unlocking position) into the retracted opening position when the drive rod (5, 6) is displaced in the unlocking direction, wherein the additional locking chain (17) is held in the (e.g. raised) unlocking position by a locking element (18) and the locking element (18) is actuated for automatic locking by a, for example, B. in or on the door frame or a locking strip arranged release magnet (14) can be actuated in such a way that the blocking element (18) releases the additional lock chain (17) so that the additional bolt (12, 11) is automatically transferred into the extended locking position.

7. Espagnolette lock according to one of claims 1 to 6, characterized in thatthe center lock (2) has a center lock chain (19) which is displaceable in the center housing (8) in the lock longitudinal direction (L), which is connected to the drive rod (5, 6) and with which the center latch bolt (9) can be retracted from the extended locking position or a partially extended unlocking position into the retracted opening position when the drive rod (5, 6) is displaced in the unlocking direction, wherein in the course of the release and displacement of the additional lock chain (17) via the drive rod (5, 6) the center lock chain (19) is also displaced and the center latch bolt (9) is thereby automatically or independently transferred into the extended locking position.

8. Espagnolette lock according to one of claims 1 to 7, characterized in that the central lock chain (19) is positively coupled to the additional lock chain (17) in both directions via the drive rod (5, 6).

9. Espagnolette lock according to one of claims 1 to 7, with an upper additional lock (3) arranged above the center lock (2) and a lower additional lock (4) arranged below the center lock (2), wherein the center lock chain (19) is positively coupled to only one of the additional locks, e.g. the lower additional lock (4), via the (lower) espagnolette (6) in both directions with the additional lock chain (17).

10. Espagnolette lock according to one of claims 1 to 9, characterized in that the center lock chain (19) is decoupled from the center latch bolt (9) during the (manipulative) pressing in of the center latch bolt (9).

11. Espagnolette lock according to one of claims 1 to 10, characterized in thatthe center lock chain (19) which is displaceable in the center housing (8) is coupled to the center latch bolt (9) via a preferably rotatable, central driver (20), e.g. via a latch lever (21) which acts on the center latch bolt (9), e.g. is pivotable.

12. Espagnolette lock according to claim 11, characterized in that the lock nut, e.g. the outer nut (15a) and / or the inner nut (15b), is coupled to the central driver (20) in such a way that, as the lock nut (15a, b) rotates in the opening direction, the driver (20) on the one hand retracts the central bolt (9), e.g. via the latch lever (21), and on the other hand displaces the central lock chain (19) and thus also the secondary lock chain (17) via the drive rod (5, 6), and retracts the secondary bolt (11, 12).

13. Espagnolette lock according to one of claims 1 to 12, characterized in thatthe or an additional bolt is designed as an (additional) latch bolt (11) which has a bevelled actuating edge associated, for example, with a frame-side locking bar and is loaded by a latch spring in the direction of the extended locking position.

14. Espagnolette lock according to one of claims 1 to 13, characterized in that the or an additional bolt is designed as a swivel hook bolt (12) or bolt bolt and / or that the additional locking device (3, 4) optionally has a swivel hook bolt (12) or bolt bolt as a further additional bolt, e.g. in addition to a latch bolt (11).

15. Espagnolette lock according to one of claims 1 to 14, characterized in that the central latch bolt (9) is secured in the locking position by at least one back-pressure safety device, preferably by multiple back-pressure safety devices.

16. Espagnolette lock according to claim 15, characterized in thata first push-back safety device is formed, for example, by the latch lever (21), which in a dead center position bears against the center latch bolt (9), for example its latch bolt head.

17. Espagnolette lock according to claim 15 or 16, characterized in that a second push-back safety device, for example, has a spring-loaded safety slide (22) which engages behind a locking edge (23) of the central latch bolt (9), for example its locking shaft, and thus secures it against being pushed back.

18. Espagnolette lock according to claim 17, characterized in that the safety slide (22) is actuated against the spring force by the center lock chain (19) to release the (second) push-back safety device.

19. Espagnolette lock according to one of claims 16 to 18, characterized in that the latch lever (21) is pivoted with the central driver (20) to release the (first) push-back safety device.

20. Espagnolette lock according to one of claims 1 to 19, characterized in thatthe activatable coupling element (16) is designed as a pivotable coupling lever.

21. Espagnolette lock according to one of claims 1 to 20, characterized in that the coupling element (16) can be transferred from a deactivated uncoupling position to an activated coupling position and vice versa by remote actuation, e.g. via a drive (24).

22. Espagnolette lock according to one of claims 1 to 21, characterized in that the coupling element (16) couples the lock nut (15) or its outer nut (15a) to the central driver (20) in the coupling position and uncouples it from the latter in the uncoupling position.

23. Espagnolette lock according to one of claims 1 to 22, characterized in that the driver (2) is decoupled from the center latch bolt (9) when the center latch bolt is pressed in.

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