EP3372757A1 - Locking unit for a locking system of a door - Google Patents

Abstract

It is a locking unit (1, 2) for a locking system of a door, in particular for a drive rod lock with multiple locking, with at least
- one on a door, z. B. on a lock plate (5) mountable lock housing (22),
a lock chain (4) displaceable in the lock housing (22),
- And at least one in the lock housing (22) displaceable latch bolt (3) which one of the locking strip (7) associated beveled actuating edge (14) and is loaded with a latch spring (13) in the direction of an extended locking position.

This locking unit is characterized in that in the lock housing (22) in addition to the displaceable latch bolt (3) a pivotable pivot hook latch (25) is mounted, which is coupled to the lock chain (4) such that it with the lock chain (4) a pivoted-unlocking position can be converted into a swung-out locking position and vice versa, wherein the pivot bolt (25) is transferred to the swung-out locking position in the closed position reaching door, as soon as the latch bolt (3) reaches a partially extended limit position in which the latch bolt (3) to a Limit dimension (M2) from the lock housing (22) or over the forend (5) protrudes, which is greater than the Entriegelungsmaß (M1) in the unlocked position.

Description

• einem an einem Türflügel, z. B. Schlossstulpen montierbaren Schlossgehäuse,
• einer in dem Schlossgehäuse verschiebbaren Schlosskette,
• und zumindest einem in dem Schlossgehäuse verschiebbaren Fallenriegel, welcher eine der Schließleiste zugeordnete abgeschrägte Betätigungskante aufweist und mit einer Fallenfeder in Richtung einer ausgefahrenen Verriegelungsstellung belastet ist,

wobei der Fallenriegel mittels der Schlosskette aus einer (vollständig) ausgefahrenen Verriegelungsstellung (d. h. bei geschlossener Tür) oder einer teilausgefahrenen Entriegelungsstellung (d. h. bei offenstehender Tür) in eine (vollständig) eingefahrene Öffnungsstellung zurückziehbar ist, wobei der Fallenriegel in der teilausgefahrenen Entriegelungsstellung um ein Entriegelungsmaß über das Schlossgehäuse oder über den Stulp vorkragt,
wobei die Schlosskette von einem Sperrelement in der (neutralen) Entriegelungsposition gehalten wird und wobei der Fallenriegel von der Schlosskette in deren (neutraler) Entriegelungsposition in der teilausgefahrenen Entriegelungsstellung gehalten wird,
wobei das Sperrelement zum selbsttätigen Verriegeln der Verriegelungseinheit derart von einem Auslösemagnet betätigbar ist, dass das Sperrelement die Schlosskette (in die abgesenkte Verriegelungsposition) freigibt, so dass der Fallenriegel selbsttätig in die ausgefahrene Verriegelungsstellung überführt wird.The invention relates to a locking unit for a locking system of a door, in particular for a drive rod lock with multiple locking, with at least

• one on a door, z. B. castle cuffs mountable lock housing,
• a lock chain displaceable in the lock housing,
• and at least one latch bolt which is displaceable in the lock housing and which has a bevelled actuating edge assigned to the latch bolt and is loaded with a latch spring in the direction of an extended locking position,

wherein the latch bolt by means of the lock chain from a (fully) extended locking position (ie with the door closed) or a partially extended unlocking position (ie, with the door open) in a (fully) retracted open position retractable, the latch bolt in the partially extended unlocking position to a Entriegelungsmaß about the lock housing or over the forend,
wherein the lock chain is held by a blocking element in the (neutral) unlocking position and wherein the latch bolt is held by the lock chain in its (neutral) unlocking position in the partially extended unlocking position,
wherein the locking element for automatically locking the locking unit is actuated by a release magnet such that the locking element releases the lock chain (in the lowered locking position), so that the latch bolt is automatically transferred to the extended locking position.

Locking unit means in the context of the invention, in particular an additional locking of an espagnolette lock or a central lock of an espagnolette lock. Additional locks on the one hand and handle and key-operated central lock are connected in a conventional manner via connecting rods, so that in the course of locking not only the central lock arranged in the central lock, for example, but also arranged in the additional locking locking elements (in particular latch bolt) are excluded. The invention thus relates to a self-locking locking unit or a self-locking lock, which is also referred to in practice as an automatic lock. Characteristic of such an automatic lock is the fact that the locking elements, for. B. the latch bolt of the additional lock, automatically enters the locking position when the door is closed. In this case, the invention relates to an embodiment with magnetic release, that is, it is provided a release magnet, which is preferably arranged in or on the (frame-side) locking bar. As soon as the door is closed, the blocking element present in the locking unit reaches the area of the triggering magnet so that the lock chain is released. In the course of sinking the lock chain in the locked position of the latch bolt automatically moves into the extended locking position, so that a self-locking is realized by magnetic tripping.

Such a locking unit is z. B. from the DE 10 2008 011 551 A1 known. Therein, in particular, an embodiment is described in which the locking element is designed as a latch bolt, wherein the latch bolt is forcibly coupled to the lock chain via an intermediate lever. Such an embodiment with magnetic release has proven excellent in practice, but it is capable of further development. - This is where the invention starts.

Furthermore, one knows from the EP 2 543 804 A2 an espagnolette lock on the one hand with the main lock and on the other hand at least one secondary lock, wherein the secondary lock contains a locking element which is adjustable between a locking position and an unlocking position and is automatically adjustable in the locked position when the lock or door is moved to the locked position. In addition to the locking element, a conventional latch is provided which is slidably supported between an extended position and a retracted position. The latch of the secondary lock and the locking element of the secondary lock are each associated with a frame-side recess, which engages in which located in the locking position locking element of the secondary lock or in the extended position located latch of the secondary lock in the closed position of the castle. The locking element can, for. B. be designed as a pivot hook latch. The latch is a conventional latch which is spring loaded and occupies an extended position when unloaded. The latch thus runs when closing the door with its inclined surface against the frame and is thereby pressed in the direction of its retracted position. The latch of the secondary lock is coupled via a pivot lever with a transmission element such that upon actuation of the pusher the main lock and an associated movement of the drive rod, the latch is brought against the force of the spring element in the retracted position. When the trigger is released, the latch automatically returns to the extended position by means of the force of the spring element. By retracting the latch of the secondary lock in the associated frame-side recess when closing the wing of the door, the position of the wing in the vicinity of the secondary lock should be fixed so that the swivel hook in the course of the triggered by the swinging of the wing self-actuated lock freely and without friction can enter the associated opening of the frame-side strike plate. In this case, a partial retraction of the latch is sufficient to ensure the desired defined position of the wing. The latch is thus decoupled from the automatic locking effecting automatism and can get into the extended position and fix the wing in the desired position, even before the automatic locking of the locking element takes place or is triggered.

Similarly, the EP 2 543 802 A2 a lock with a latch and a locking element and with at least one securing element which is adjustable by means of a securing element and a frame-side triggering element acting magnetic attraction or repulsive force between a securing position and a Entsicherungsstellung. The locking element is held by this securing element in the unlocked position. In addition, the locking element is to be held by the located in the retracted position latch in the unlocked position. The triggering of the automatic locking should be controlled by a double fuse, namely once by that in the unlocked position located locking element is held by the securing element located in the securing position in the unlocked position and once by the fact that the locking element located in the unlocking position is held by the located in the retracted position latch in the unlocked position. Starting from the open position of the wing or the door or the like, a two-stage sequence control for triggering the automatic locking is realized in the operation of the castle, which increase the reliability and security of the lock and should rule out incorrect operation effectively. This lock, which is designed primarily as the central lock of a multiple lock, works with a conventional spring-loaded latch.

Incidentally, from the EP 2 862 996 A2 a locking device for a door or a window is known, which has a main lock box and at least one secondary or additional lock case, the secondary lock case has a freely zurückschließbaren in unlocking latch and at least one latch bolt is displaced by a latch spring beyond the case position into a locking position. The latch bolt forms a locking device for the drive rod, which is urged spring or gravity loaded in a locking position. However, the self-release is done mechanically by special locking and release elements in or on the latch bolt.

Based on the known prior art, in particular according to DE 10 2008 011 551 A1 , The invention is the technical problem of providing a locking unit for a locking system of a door, in particular for a drive rod lock with multiple locking, which ensures a reliable and reliable self-locking by magnetic release at the same time increased burglary protection.

To solve this problem, the invention teaches in a generic locking unit of the type described above, in addition to the sliding latch bolt a (pivotable about an axis) pivot hook latch is mounted in the lock housing, in its pivoted-out locking position, the locking bar or the striking plate or an element engages behind or in the closing strip and (for-) coupled with the lock chain so that he with the lock chain from a pivoted unlocking position, (ie lock chain in neutral unlocking) in a swung-out locking position (ie lock chain in lowered locking position) can be transferred and vice versa,
wherein the pivot bolt is (only or only then) in the closed position reaching door in the (fully) swung out locking position when / when the latch bolt reaches a partially extended limit position or passes over, in which the latch bolt by a limit measure (of eg. 13 mm) which is greater than the unlocking dimension (eg 10 mm) in the unlocked position and which is also smaller than the locking dimension (eg about 20 mm) which the latch bolt assumes in the extended locking position.

The invention is initially based on the recognition that a simple and at the same time manipulation-safe self-locking by magnetic release, taking into account a provided in the locking unit locking element is appropriate, which either blocks or releases the independently movable lock chain in the lock case. In this way, complicated mechanical release mechanisms, which in the prior art z. B. are integrated in a latch bolt or by Separate release lever can be realized omitted. The magnetic self-release is characterized by high security against manipulation, since a manipulation with purely mechanical means is not possible. Based on these considerations, the security against manipulation and burglary protection is further increased by a pivotable swivel hook bolt is provided in addition to the sliding latch bolt, not in combination with a simple latch, but in combination with another locking element, namely a latch bolt, so that Combination of the two locking elements ensures a particularly high level of security. The two locking elements, namely latch bolt on the one hand and swing hook latch on the other hand, go to magnetic release of the locking element in their locking positions. According to the invention, these locking operations are not realized simultaneously, but with a time delay, because the pivot hook latch is only extended when the latch bolt is already immersed by a certain amount in the locking bar, so that the latch bolt not only a lock, but also a pre-centering of the door takes place and thus dipping the pivot hook latch reliably in the region of the closing strip and can engage behind the locking bar or an element arranged therein or in it. The pre-centering, however, according to the invention does not take place with a simple spring-loaded latch, but with a latch bolt not only a defined fully extended (non-return) locking position, but also a defined, partially extended (not pressed-back) unlocked position can take. This is realized in the invention in particular by the fact that the latch bolt is not completely positive or positively coupled coupled to the lock chain, so that a certain kinematics of the latch bolt is also possible regardless of the movement or position of the lock chain. A coupling between the lock chain and the latch bolt is preferred only implemented such that the latch bolt by movement of the lock chain (in particular by lifting the lock chain) from the (fully extended) locking position or from the (partially extended unlocking position) in the fully retracted open position is retractable. Thus, in particular by pressing operation or key operation in the area of the main lock or by a motor drive the possibility of the latch bolt on the movement of the lock chain, the z. B. is connected to a drive rod, withdraw and open the lock. In addition, a coupling between the lock chain on the one hand and the latch bolt on the other hand is realized such that the latch bolt is held on the lock chain and the latch lever in the partially extended unlocking position. In the course of the extension of the latch bolt in the partially to fully extended locking position, no support is provided by the lock chain, ie the extension into the locking position does not take place by the displacement of the lock chain, but solely on the force of a latch spring, because the latch bolt is spring-loaded in the closing direction , The coupling of the latch bolt with the lock chain is therefore particularly limited to a coupling in the unlocking or opening direction, ie in the course of lifting the lock chain.

This can preferably be realized constructively in that the lock chain via at least one (pivotally mounted about an axis) latch lever (only) in operative connection with the latch bolt that the latch bolt on the latch lever from the locking position or from the partially extended unlocking position in the fully retracted open position is retractable and that the latch bolt is held with the door open in the partially extended unlocking position. While z. B. in the prior art after DE 10 2008 011 551 A1 a two-sided Forced coupling of the latch bolt with the lock chain via a pivotable latch lever or intermediate lever, the coupling with the help of the latch lever according to the invention is configured only on one side, in particular to avoid always synchronous extension of the latch bolt on the one hand and the pivot bolt on the other.

In a preferred embodiment, the lock chain after release by the locking element (as a result of a magnetic release) held by the latch bolt, d. H. blocked against lowering until the spring-loaded latch bolt reaches the partially extended limit position.

Such blocking of the lock chain up to partially extended limit position of the latch bolt can be realized by suitable structural design of the lock chain on the one hand and the latch bolt on the other hand, so that the latch bolt blocks the lock chain immediately. In a preferred embodiment, the operative connection between the latch bolt and lock chain in the course of a blockage, however, via an additional element, for. B. realized an additional control lever, via which the lock chain is in operative connection with the latch bolt. If the lock chain z. B. released after a magnetic release by the blocking element, it is not immediately a complete lowering of the lock chain, but the lock chain is held by the control lever until the spring-loaded latch bolt reaches the limit position.

In a particularly preferred embodiment of the latch bolt with the lock chain is thus on two elements or two levers in operative connection, namely on the one hand the latch lever, in particular in the course of unlocking and consequently in the course of raising the lock chain significance and on the other hand via the control lever, which in particular in the course of sinking the lock chain after an automatic triggering importance.

The control lever can also be equipped as a pivoting lever, the z. B. is pivotally mounted about a horizontal axis. This control lever itself is not spring loaded. It may also be appropriate that the latch lever itself is not directly spring loaded. However, it is preferably provided that on the one hand the latch bolt is directly spring-loaded, for example by a leg spring or a comparable spring element which acts in the extension direction on the latch bolt. In addition, the lock chain can be directly spring loaded, namely for gravity support, d. H. The lock chain is not only about gravity, but in addition to the force of another spring, z. B. a leg spring, pressed into the locking position and thus in the lowered position.

The control lever preferably has a (end) control cam acting as it were between latch bolt on the one hand and lock chain on the other hand. So this control cam on the one hand by the latch bolt, z. B. an actuating surface or an actuating edge of the latch bolt are actuated and on the other hand, this control cam can then act on the lock chain and thereby lift. The lock chain itself may have a corresponding control contour, on which the control lever, z. B. whose control cam works. The control contour is designed so that the described blocking function of the lock chain is guaranteed until the spring-loaded latch bolt reaches the partially extended limit position.

According to the invention is of particular importance that the burglary and tamper resistance of the locking unit is increased by that on the one hand a latch bolt and on the other hand, a pivot bolt are provided, wherein the latch bolt not only takes on a case function, but is itself designed as a locking element. For this it is particularly advantageous if the latch bolt is self-locking, z. B. with at least one additional securing element which secures the latch bolt in the extended locking position against a pushing back. Particularly preferably, the latch bolt is double-backed or two-stage non-return, not only in the (fully) extended locking position, but also (already) in or from the partially extended limit position, from which then also extends the pivot hook latch. It can be z. B. for the backup in the fully extended locking position an additional securing element may be provided which locks the latch bolt in this locking position against push back. In addition, the latch bolt is also (already) then non-return secured when the latch bolt has moved out to the limit position (or beyond). For this purpose, an additional safety lever or locking lever can be provided. Preferably, this backup can be realized in the limit position but with the help of the control lever already described in cooperation with the lock chain. For this purpose, reference is made to the description of the figures. In any case, it is particularly advantageous if a two-step backup is realized both for the locking position and for the limit position, preferably by cooperation of the latch bolt with the lock chain, z. B. with the interposition of one or more security elements. The locking system is characterized in this case by special manipulation and burglary security, because the latch bolt is back-secured even if the latch bolt does not reach the fully extended locking position, but (only) in the partially extended limit position or beyond. The swing hook latch is (also) provided with a backup, z. B. via a (further) securing element, which z. B. may be formed as a safety lever. One possible embodiment is described in the description of the figures.

Of particular importance in the context of the invention, the additional pivot hook latch, which is swung in the course of the movement of the lock chain from the unlocked position into the locking position and vice versa, so that the pivot hook bolt is forcibly coupled to the lock chain in both directions of action. For this purpose, it is advantageous if the lock chain an operating section, for. B. has an actuating arm or actuating projection, which is coupled to the pivot hook latch itself or with an (additional) operating lever for the pivot hook latch. This actuating lever can itself be designed as a pivotable or rotatable lever. It is particularly advantageous if the lock chain is coupled to the pivot hook bolt via a transmission, preferably a reduction gear, so that over a relatively small stroke of the lock chain a swinging and pivoting of the pivot hook bolt, z. B. is made possible by a swivel angle of 90 °. Constructively z. B. the possibility that the mentioned actuating lever forms a first transmission element and that on the pivot hook bolt (rotatably), a second transmission element is coupled or that the pivot hook latch has a corresponding gear portion as a second transmission element or forms such. These gear elements may be provided with corresponding teeth, so that the reduction gear is preferably designed as a gear transmission. In principle, however, other constructions and in particular transmission designs are possible.

Overall, according to the invention, a locking unit, in particular an additional locking mechanism for an espagnolette lock, is provided ensures a reliable and reliable self-locking based on a magnetic release. In addition, the locking unit is characterized by an increased level of manipulation and burglary security, since (at least) two locking elements, namely on the one hand a latch bolt and the other a pivot hook latch are provided. The reliability in the course of self-locking is optimized in particular by omitting a complete positive coupling between the latch bolt on the one hand and the lock chain on the other hand and thus a synchronous movement of this component. The kinematics in the course of self-locking is specified in terms of timing, so that a complete pivoting of the pivot bolt only or only then takes place when the latch bolt has sufficiently extended and provided for a pre-centering of the door.

The invention also provides an espagnolette lock with at least one central lock and with at least one additional lock, wherein, in particular, such an additional lock is designed in the manner described. Consequently, the locking unit is not only independently under protection, but also an espagnolette lock with such a locking unit. Furthermore, a locking unit is placed under protection, which consists on the one hand of a locking unit (or a drive rod closed with multiple locking units) and on the other hand, a locking unit associated closing bar, wherein in or on this closing bar of the trigger magnet is arranged.

Fig. 1

ein Treibstangenschloss in stark vereinfachter Seitenansicht,

Fig. 2a

eine erfindungsgemäße Zusatzverriegelung des Treibstangenschlosses in einer geöffneten (perspektivischen) Seitenansicht in einer ersten Funktionsstellung ("teilausgefahrene Entriegelungsstellung"),

Fig. 2b

die Zusatzverriegelung gemäß Fig. 2a in einer rückseitigen Ansicht,

Fig. 3

die Zusatzverriegelung nach Fig. 2b in einer zweiten Funktionsstellung ("voll eingefahrene Öffnungsstellung"),

Fig. 4

das Treibstangenschloss nach Fig. 2a in einer dritten Funktionsstellung ("Grenzstellung"),

Fig. 5a

die Zusatzverriegelung nach Fig. 2a in einer vierten Funktionsstellung ("voll ausgefahrene Verriegelungsstellung") und

Fig. 5b

die Zusatzverriegelung nach Fig. 2b in der vierten Funktionsstellung.

In the following the invention will be explained with reference to only one embodiment illustrative drawing. Show it

Fig. 1

an espagnolette lock in a greatly simplified side view,

Fig. 2a

an inventive additional locking of the espagnolette lock in an open (perspective) side view in a first functional position ("partially extended unlocking position"),

Fig. 2b

the additional locking according to Fig. 2a in a back view,

Fig. 3

the additional lock after Fig. 2b in a second functional position ("fully retracted open position"),

Fig. 4

the espagnolette lock after Fig. 2a in a third functional position ("limit position"),

Fig. 5a

the additional lock after Fig. 2a in a fourth functional position ("fully extended locking position") and

Fig. 5b

the additional lock after Fig. 2b in the fourth functional position.

In the figures, a multi-lock espagnolette lock in the embodiment is shown as a self-locking automatic lock. Fig. 1 shows an attachable to a door espagnolette lock, which as a locking units 1, 2 on the one hand a central lock 1 and on the other hand, an upper and a lower additional lock 2, which are fastened to the back of a (common) lock plate 5. In the course of a handle operation and / or a closing operation, the central lock 1 is unlocked on the one hand and on the other hand via the merely indicated drive rods 6 and the additional lock 2. The central lock 1 can in a conventional manner a latch, a central latch, a lock nut and / or have a lock cylinder. Details are not shown. Alternatively, there is the additional addition to provide an electric motor drive for unlocking. This option is not shown.

The actuatable via the espagnolettes 6 additional latches 2 each have a lock housing 22. In the lock housing 22, a displaceable (plate-shaped) lock chain 4 is arranged. In addition, a latch bolt 3 is provided in the lock housing as the first locking element, which is displaceable in the lock housing 22 and one of the locking bar 7 associated beveled actuating edge 14 and is loaded with a latch spring 13 in the direction of an extended locking position. In the course of unlocking on the central lock 1, the associated drive rod 6 operates on the attached lock chain 4 of the additional lock 2, which is guided along the Schlossstulpes 5 and consequently displaceable in the vertical direction in the lock housing 22 of the additional lock 2. By means of the lock chain 4 of the latch bolt 3 from a (fully) excluded locking position ( Fig. 5a . 5b ) in a (fully) enclosed unlocking position ( Fig. 3 ) and vice versa. While such unlocking z. B. is performed manually or via a motor via the central lock, the locking takes place selbsttätig or automatically in the espagnolette lock according to the invention or the additional lock 2 according to the invention, as soon as the door or the door reaches the closed position.

For this purpose, a locking element 9 is provided in the additional lock 2, which holds the lock chain 4 in the (neutral) unlocking position. This blocking element 9 is associated with a arranged on the closing strip 7 tripping magnet 10. This closing strip-side release magnet 10 operates for automatic locking or for automatic release of the latch bolt 3 on the locking element 9, which then releases the lock chain 4, so that the locking element 3 is automatically transferred to the locking position. The blocking element 9 is formed in the embodiment as a linearly displaceable locking pin 9, which is moved toward unlocking the lock chain 4 in an attractive sense in the direction of the release magnet 10. The release magnet 10 is designed as a permanent magnet. The associated blocking element 9 itself is not permanently magnetic, but can be magnetized and consequently made of a ferromagnetic material, so that it is attracted by the triggering magnet 10. The lock chain 4 itself is on the one hand by gravity and on the other hand via a locking spring 38 from the (neutral) unlocking position ( Fig. 2a . 2 B ) in the lowered locking position ( Fig. 5a . 5b ) Convertable as soon as the trigger magnet shifts the locking pin 9 and this releases the lock chain 4.

In addition to the latch bolt 3 already described, a pivot hook latch 25 pivotable about a (vertical) axis 26 is mounted in the lock housing 22, which in its swiveled out locking position dips into a recess of the striker bar (strike plate) and engages behind the striker bar 7. With this additional pivot hook latch 25, the manipulation and burglary security of the locking unit is increased. This swivel hook latch 25 is forcibly coupled to the lock chain 4 such that it can be transferred with the lock chain 4 from a pivoted-unlocking position (in which the lock chain is in neutral unlocking position) into a pivoted-out locking position (in which the lock chain is in the lowered locking position) and vice versa. After magnetic release in the course of self-locking consequently both the latch bolt 3 and the pivot hook latch 25 move into the respective locking positions. The construction is designed so that the pivot bolt 25 at in Closing position reaching door is then immediately transferred to the swung-out locking position, if or as soon as the latch bolt 3 a partially extended limit position ( Fig. 4 ), in which the latch bolt protrudes by a limit M2, which is greater than the Entriegelungsmaß M1 in the unlocked position and also smaller than the locking measure M3 in the fully extended locking position. This mode of operation according to the invention is explained below with reference to the figures:

The Fig. 2a and 2 B show the additional lock 2 from opposite directions, in an unlocked position with the door open. The pivot hook latch 25 is thus in the pivoted unlocking position and the latch bolt 3 is located in the partially extended unlocking position. The lock chain 4 is in the neutral unlocking position. It can be seen that an arranged on the lock housing 22 guide pin 40 engages in a slot 41 in the lock chain 4 such that the lock chain 4 from this neutral unlocking position Fig. 2a . 2 B can be displaced to a certain extent in both vertical directions and thus either raised or lowered. The latch bolt 3 projects beyond the lock housing 22 or over the lock plate 5 by the unlocking dimension M1. This unlocking M1 is about 10 mm in the embodiment.

Starting from this unlocking position ( Fig. 2a . 2 B ), in which the latch bolt 3 is not secured against recoil, there is now the first opportunity to further retract the latch bolt 3, in the z. B. in the course of a handle operation, the drive rod 6 and thus the lock chain 4 is raised (see. Fig. 3 ). It can be seen that in this case the latch bolt 3 is completely retracted and consequently retracted to the retracted opening dimension M0 of approximately 0 mm. This is the case latch 3 with the lock chain 4 via a latch lever 12 in operative connection, which is formed as (about a horizontal axis 15) pivotable lever in the embodiment L-shaped and one of the lock chain 4 associated first arm 12a and the latch bolt 3 associated second arm 12b. On the lock chain 4, an actuating cam or actuating pin 17 is arranged, which presses the first arm 12 a of the lever 12 upwards. The second arm 12b thus acts on an actuating cam 3b which is arranged on a latching extension 3a of the latch bolt 3, so that the latch bolt (guided in the latch guide sleeve 18) is withdrawn into the retracted open position (cf. Fig. 3 ). After releasing the trigger the lock chain 4 sinks back into the Fig. 2a . 2 B illustrated neutral position, so that the latch bolt 3 again occupies the partially extended (not pressed back) unlocked position. A further drop in the lock chain 4 is avoided via the locking pin 9, which engages under a locking edge 11 on the lock chain 4. In this neutral position of the lock chain 4 of the latch bolt 3 is held on the latch lever 12 in the partially extended unlocking position ( Fig. 2a . 2 B ).

If the door now moves from the position Fig. 2a . 2 B closed, the additional locking of the closing strip 7 approaches and thus the magnet 10 triggers the automatic locking. For this purpose, first of all the latch bolt 3 is pushed back into the lock housing 22 on contact with the closing strip 7 due to its beveled actuating surface or case bevel 14. The lock chain 4 is raised slightly. However, this lifting does not take place via a coupling by means of the latch lever 12, but via the additionally provided control lever 27, ie the actuating edge 30 pushes over the (to the axis 28 pivotable) control lever 27 on the lock chain 4 and raises this something. By this raising the lock chain 4 is the (positive and / or frictional) contact between the locking pin 9 and the locking edge 11 and a there intended undercut. Now comes in this functional position and arranged on the closing strip 7 release magnet 10 in the vicinity of the locking pin 9, so that the trigger magnet 10, the locking pin 9 (against the force of a locking spring) attracts. This triggering movement of the locking pin 9 via the magnet 10 is made possible by the above-described lifting of the lock chain 4, since an engagement of pin 9 and lock chain 4 is released. Once the door is completely closed, the latch bolt 3 enters the area of a corresponding latch receptacle, for. As an opening of the locking strip 7 and thus the latch bolt 3 can retract due to the spring force in the recess of the closing strip. Since the lock chain 4 is no longer held by the locking pin and thus drops, the latch bolt 3 is no longer held in the partially extended position, but can fully extend.

The lock chain 4 sinks into the lowered locking position and in the course of this lowering the pivot hook latch 25 is swung out. For this purpose, the lock chain 4 is coupled to the pivot hook latch 25. The lock chain 4 has a (hook-like) actuating arm 35 which cooperates via an actuating lever 36 with the pivot hook latch 25, to form a reduction gear. In this case, the actuating lever 36 forms with its toothing 36 ', the first gear member and the pivot hook bolt is rotationally fixed (or possibly also in one piece) connected to a second transmission element 37 / formed, which has a toothing 37'. This functional position is then in the Fig. 5a . 5b shown. The latch bolt 3 is also fully extended in this locked functional position. In addition, the pivot hook latch 25 is secured against reverse via a securing lever 33. The latch bolt 3 is in the in Fig. 5a . 5b illustrated fully extended locking position also backed up, via the fuse element 34th A comparative consideration of Fig. 4 and 5a shows that this fuse element 34 according to Fig. 5a has reached the non-return blocking position. The latch bolt 3 is, however, in the illustrated embodiment, not only in this fully extended locking position non-return secured, but already in the in Fig. 4 illustrated limit position or from the in Fig. 4 illustrated limit position. It is therefore realized a two-stage or double backup protection. In the in Fig. 4 illustrated limit position, the backup pressure of the latch bolt 3 is not done via the fuse element 34, but via the control lever 27 which cooperates with the lock chain 4. If you compare the functional position in Fig. 4 (Limit position) with the functional position in Fig. 2a , it can be seen that the latch bolt 3 in the unlocked position after Fig. 2a is not backed up, since the latch bolt 3 can raise the lock chain on the edge 30 and the control lever 27 due to their contour. In contrast, the control lever 27 in the functional position Fig. 4 blocked in an attempt to push the latch bolt 3 back over the lock chain, so that a reliable backup of the latch bolt 3 already in or from this limit position after Fig. 4 is realized.

Of particular importance now is the transition from the in Fig. 2a . 2 B on the one hand into the in Fig. 5a . 5b On the other hand illustrated functional positions that the pivot bolt is only transferred to the swung-out locking position when the latch bolt in the Fig. 4 has reached partially completed (feedback-protected) limit position. In this limit position, the latch bolt 3 protrudes by a limit dimension M2 over the lock housing or the lock forend, which is greater than the unlocking amount M1 and smaller than the lock amount M3. In the illustrated embodiment, the limit dimension M2 is about 13 mm, while the unlocking dimension M1 is about 10 mm and the locking amount M3 is about 20 mm. If therefore at closed door is pulled over the release magnet of the locking lever and thus the lock chain 4 is released, the lock chain 4 decreases and at the same time moves the latch bolt 3 gradually. Thus, the control lever 27 is pivoted, which initially prevents the lock chain 4 against lowering via the control cam 29. Only when the control lever is further pivoted, the lock chain 4 due to the provided on the lock chain 4 control contour 32 continue to drop, so that the pivot bolt is extended. This results from a comparative analysis of the Fig. 2a . 2 B (partially extended unlocking position) on the one hand and the Fig. 4 (Limit position during self-locking) and finally the Fig. 5a and 5b (Locked position).

The lock is unlocked from Fig. 5a . 5b z. B. by pusher or lock cylinder actuation or by a motor drive in which the drive rod and thus the attached lock chain 4 is raised. This leads, first of all, to the fact that the lock chain 4 pivots the back-up protection or the securing lever 33 slightly upwards, so that the back-up protection for the pivoting hook bolt 25 and the latch bolt 3 is released. This unlocked position is not shown separately in the figures, but it is in Fig. 5b recognizable that the lock chain 4 in the region of the actuating arm 35 has a projection which pivots in the course of raising the lock chain 4, the lever 33 in the clockwise direction and thus raises. In the course of raising the lock chain 4 of the pivot bolt 25 is retracted via the reduction gear 36 ', 37'. In addition, the latch lever 12 is pivoted due to the operation of the pin 17 and thus the latch bolt 3 retracted, so that then finally the functional position after Fig. 3 is reached. If the door remains in the open position, the latch falls into the in Fig. 2a . 2 B illustrated partially extended unlocking position in which the lock chain is blocked by the locking element. If the door then falls into the frame, it comes in the manner described to the self-locking, which then back in the functional position Fig. 5a . 5b ends.

Claims (14)

Locking unit (1, 2) for a locking system of a door, in particular for a drive rod lock with multiple locking, with at least - one on a door, z. B. on a lock plate (5) mountable lock housing (22), a lock chain (4) displaceable in the lock housing (22), - and at least one in the lock housing (22) displaceable latch bolt (3) having a the locking strip (7) associated beveled actuating edge (14) and is loaded with a latch spring (13) in the direction of an extended locking position, wherein the latch bolt (3) by means of the lock chain (4) from an extended locking position or a partially extended unlocking position in a retracted open position retractable, wherein the latch bolt in the partially extended unlocking position by a Entriegelungsmaß (M1) from the lock housing (22) or on the forend (5) projecting,
wherein the lock chain (4) by a locking element (9) is held in the unlocked position and wherein the latch bolt (3) is held by the lock chain (4) in its unlocked position in the partially extended unlocking position,
wherein the locking element (9) for automatically locking the locking unit in such a manner by a release magnet (10) is actuated, that the Locking element (9) the lock chain (4) free, so that the latch bolt (3) is automatically transferred to the extended locking position,
characterized in that
in the lock housing (22) in addition to the displaceable latch bolt (3) a pivotable pivot hook bolt (25) is mounted, which is coupled to the lock chain (4) such that it with the lock chain (4) from a pivoted unlocking position in a swung-out locking position is convertible and vice versa,
wherein the pivot bolt (25) is transferred into the pivoted-out locking position when the door leaf reaches the closed position as soon as the latch bolt (3) reaches or passes over a partially extended limit position in which the latch bolt (3) moves out of the lock housing (22) by a limit dimension (M2). or projecting beyond the forend (5), which is greater than the unlocking dimension (M1) in the unlocked position. Locking unit according to claim 1, characterized in that the lock chain (4) via at least one pivotable latch lever (12) only in operative connection with the latch bolt (3), the latch bolt (3) on the latch lever (12) only from the locking position or the partially extended unlocking position in the fully retracted open position is retractable and is held in the partially extended unlocking position with the door open. Locking unit according to claim 1 or 2, characterized in that the lock chain (4) after release by the blocking element (9) of the Trap bolt (3) is held until the spring-loaded latch bolt (3) reaches the partially extended limit position. Locking unit according to one of claims 1 to 3, characterized in that the lock chain (4) via a control lever (27) in operative connection with the latch bolt (3), the lock chain (4) after release by the locking element (9) the control lever (27) is held until the spring-loaded latch bolt (3) reaches the partially extended limit position. Locking unit according to claim 4, characterized in that the control lever (27) is designed as a pivotable lever and preferably about an axis (28) pivotally mounted in the lock housing (22). Locking unit according to claim 4 or 5, characterized in that the control lever (27) has a control cam (29) which is actuated by an actuating surface (30) of the latch bolt (3) and works on the lock chain (4). Locking unit according to one of claims 4 to 6, characterized in that the control lever (27), z. B. whose control cam (29) on a control contour (32) of the lock chain (4) works or these acted upon. Locking unit according to one of claims 1 to 7, characterized in that the pivot hook latch (25) with a first securing element (33), z. B. a safety lever, is secured against reverse. Locking unit according to one of claims 1 to 8, characterized in that the latch bolt (3) z. B. via a securing element (34) is rückdrückgesichert, preferably two-stage is non-return, by each in the partially extended limit position and in the fully extended locking position is each rückdrückgesichert. Locking unit according to one of claims 1 to 9, characterized in that the lock chain (4) has an actuating portion, for. B. an actuating arm or projection (35) which is coupled to the pivot hook latch (25) or with an actuating lever (36) for the pivot hook latch (25). Locking unit according to one of claims 1 to 10, characterized in that the lock chain (4) with the pivot hook bolt (25) via a transmission, preferably a reduction gear is coupled, wherein z. B. the actuating lever (36) is coupled as the first transmission element with a on the pivot hook latch (25) attached or formed by this second transmission element (37). Locking unit according to one of claims 1 to 11, characterized in that the locking unit is formed as an additional lock (2) of an espagnolette lock, wherein the lock chain (4) of the additional lock (2) to a central lock (1) and the additional lock (2) with each other coupling drive rod (6) is connected. Espagnolette lock with at least one central lock (1) and with at least one additional locking (2), wherein at least the additional locking (2) is designed as a locking unit according to one of claims 1 to 12. Locking unit, comprising at least one locking unit according to one of claims 1 to 12 and at least one locking bar associated with the locking bar (7), wherein in or on the locking bar (7) a trigger magnet (10) for the actuation of the locking element (9) of the locking unit (1, 2) is arranged.

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