LOCK, ESPECIALLY FOR DOORS, WITH LOCKABLE SWING LATCH

Description

[0001] The present invention relates to a lock, in particular a door lock, with a lockable pivoting latch.

[0002] Locks are primarily used to secure a door or window in a building. In addition to the security aspect, door locks must fulfill different functionalities and requirements, particularly depending on their location of use (e.g., fire doors, stairwell doors, doors for barrier-free living), and depending on the operating conditions (e.g., daytime or nighttime operation). For example, a door lock can be opened from the outside using only a key or via remote control or access control, while it can be opened from the inside using a key, a handle, or an automatic door operation system. From a security perspective, the ability to securely lock the lock with a low risk of tampering is crucial.

[0003] In applications where a door must be able to be opened from the inside (from inside a building, a room, or a secured area) at any time, while simultaneously being locked from the outside (from outside the building, room, or secured area), so-called panic locks are often used. Panic locks can, for example, enable a safe exit from the building, room, or secured area when securing escape routes or in fire doors. From the inside, the door can be opened quickly at any time using a handle without a key, while from the outside it can only be opened with a key or via access control. As soon as a door closes, an automatic self-locking mechanism ensures secure closure and burglary protection. Depending on the solution requirements, different panic locks are used: mechanical, electrical, or motor-operated.

[0004] Panic locks of a similar design are also suitable for doors in barrier-free living. Here, opening and closing doors must be possible even with minimal effort. So-called swing latch locks can be used for this purpose. These locks feature a slidably mounted and self-locking swing latch. In one functional state, the swing latch can tilt under the application of force and fall into the lock housing, allowing the door to be pushed open simply by applying force to the door leaf. The potentially laborious operation of a handle or turning knob to retract the swing latch is not necessary. In another functional state, pivoting or tilting of the swing latch can be blocked, but the swing latch can still be pushed in and out of the lock housing and function like any normal latch.In a further functional state, both pivoting and sliding of the pivot latch can be blocked, so that the lock is locked in the same way as by means of a bolt in a standard mortise lock.

[0005] For example, DE 102 07 630 C5 discloses a door lock that can also be used for panic doors or doors for barrier-free living. The lock comprises a displaceably mounted latch assembly with a pivotably mounted latch, a locking device associated with the latch, and an actuating device associated with the locking device. The locking device is provided for locking and releasing the pivoting movement of the latch and is displaceably attached to the latch assembly together with the latch. The actuating device comprises a door handle received in a lock nut and / or an electric motor for transferring the locking device into a locked or released position. The locking device comprises a locking lever that acts on the rear of the latch via a locking pin. The locking lever engages with a free terminal lug in a recess of a cam follower lever and is thus held non-pivotable.The door can then no longer be opened by applying pressure to the door leaf. To open the door, the cam follower lever can be pivoted via a lock mechanism, e.g. by operating the door handle, so that it disengages from the nose of the locking lever and the locking lever is released. The pivot latch can then be pivoted or tilted, and the door can be opened by simply applying force, e.g. by pressing on the door leaf or pulling. Alternatively, the locking device can be released by a motor by energizing the electric motor to act on the cam follower lever via a gear and an eccentric pin to pivot it into the release position. In one embodiment, in addition to the pivot locking device with the locking lever and the cam follower lever, a displacement locking device is provided which comprises a pivotable locking lever which blocks displacement of the latch assembly.The actuating device comprises a pivotable release lever having a projection which, in a locking position, bears against the locking lever of the pivot locking device and control surfaces which are configured to act against the cam follower lever and the locking lever of the displacement locking device when the release lever is pivoted into the release position and to pivot them in order to release both the pivot lock and the displacement lock.

[0006] The lock has generally proven itself in practice, but it can also have shortcomings. For example, in a case where the door is still open while a control device of the door lock causes the electric motor to pivot the cam follower lever into the locked position and secure the locking lever, the blocked tilting of the pivoting latch can prevent or at least impede closing the door.

[0007] In addition, the pivot latch must first fully extend from the lock housing so that the cam follower lever, with its recess, can engage and secure the locking lever's nose. However, various factors, such as a compromised door seal, a warped or curved door, a damaged strike plate, and the like, can prevent the latch bolt from extending fully outward. In this case, the pivot latch remains unlocked and can therefore still be pivoted or tilted. The door can then still be opened from the outside. However, this should be avoided.

[0008] Locks with pivoting latch bolts and tumblers for these are known in various versions. DE 39 38 655 A1, for example, discloses an electromagnetic door lock with a slidably mounted latch assembly with a pivoting cross latch and a locking locking device that prevents the latch assembly from moving into the interior of the lock housing if necessary. An actuating device driven by an electric motor, which has a link-like force transmission element that can be moved up and down, serves to retract a bolt into its retracted position in the lock. At the end of the retraction movement, the locking device for the latch is simultaneously moved into an unlocked position. The locking device serves only to lock and release the sliding movement of the latch assembly, but not to lock and release the pivoting movement.The locking mechanism does not prevent the latch from pivoting. Furthermore, the locking mechanism is only effective when the latch is fully extended from the lock.

[0009] DE 38 12 313 A1 discloses a door lock with a pivoting latch mounted on a displaceable latch body, wherein a displacement lock with a locking lever is provided to engage the latch body in the fully extended position of the latch to prevent its displacement into the lock. The locking lever is actuated by a solenoid device via an adjusting member. The displacement lock serves solely to lock and release the displacement movement of the latch assembly and not to release and lock the pivoting movement. The locking lever can only engage the latch body when the latter is fully extended from the lock housing.

[0010] DE 10 2015 109 005 A1 discloses a lock with a displaceably mounted latch bolt assembly containing a pivotable latch head and a spring-loaded sliding sleeve, and with a locking device for locking the pivoting latch. The locking device has a locking arm that interacts via a pin with a locking lever pivotally mounted in the lock case. The locking lever has a locking roller at its end that rolls on a concave surface on a rear side of the sliding sleeve of the latch bolt assembly and, in the locked position, prevents axial displacement of the sliding sleeve and thus both displacement and pivoting or tilting of the pivoting latch.The locking arm for locking and releasing the pivoting latch is actuated by a slide plate mounted for longitudinal movement within the lock housing. It interacts with a locking bolt tail via a guide track in such a way that, upon linear displacement of the slide plate, the lock bolt is either expelled from the lock case or retracted into the lock case and mechanically secured in its end positions. In the locked position, the pivoting latch is also fully locked.

[0011] The previously known lock has a lock bolt. To lock the pivoting latch, the lock bolt must be actuated. For some applications, e.g., in combination with commercially available electric door openers, and also for cost reasons, it is desirable or necessary to omit the lock bolt and the associated lock mechanism and to lock the lock solely by blocking the pivoting latch. Furthermore, independent blocking of the pivoting movement and the sliding movement of the pivoting latch may be desired or necessary, which is not possible with the previously known lock. Unfortunately, the pivoting latch of the previously known lock is only blocked when the latch assembly extends completely out of the lock case, which, as explained above, may be prevented under certain circumstances.

[0012] Based on this, it is an object of the present invention to provide a lock, in particular a door lock, having a slidably mounted pivoting latch bolt that can be securely locked against both pivoting and displacement as needed. In particular, the lock should have a simple design, be easy to operate, and preferably be flexible for different applications and requirements, especially for panic locks or locks for barrier-free doors.

[0013] This problem is solved by the lock having the features of patent claim 1.

[0014] The lock according to the invention, in particular a door lock, comprises a housing having a front end with a latch bolt opening. The lock further comprises a latch bolt assembly displaceably mounted in the housing transversely to the front end, which can be moved by means of a lock mechanism between an extended position protruding beyond the front end through the latch bolt opening and a retracted position retracted into the housing. The latch bolt assembly comprises a pivotably or tiltably mounted latch bolt. The lock further comprises a slide plate displaceably mounted in the housing along the front end, which slide plate can be moved between a locked position and a released position by an actuating device.The lock further comprises a pivot locking device for locking and releasing the pivoting movement of the latch bolt, the pivot locking device being slidably mounted on the latch bolt assembly together therewith, coupled to the slide plate and configured to be activated and engage the latch bolt to block the pivoting movement thereof once the slide plate is in the locked position.The lock further comprises a sliding locking device separate from the pivot locking device for locking and releasing the sliding movement of the latch bolt assembly, wherein the sliding locking device is mounted on the housing, coupled to the slide plate and configured to be activated and engage the latch bolt to block the sliding movement of the latch bolt assembly when the slide plate is in the locked position and the latch bolt assembly is in its extreme extended position.

[0015] The invention provides both a pivot locking device for locking and releasing the pivoting movement of the latch bolt, and a separate, largely functionally decoupled, sliding locking device for locking and releasing the sliding movement of the latch bolt assembly. The latch bolt can be locked, if necessary, only against pivoting or both against pivoting and sliding, i.e., completely locked. A separate locking bolt is not required. The lock is preferably free of such a locking bolt. The latch bolt can also be permanently fully unlocked for a special daytime function.

[0016] The pivot locking device is designed in such a way that it is activated and immediately engages the latch bolt as soon as the slide plate changes to the locked position. The locked position can preferably be the lower position of the slide plate in a normal vertical usage position of the lock, while the release position can be the upper position of the slide plate. The change to the locked position can, for example, already occur as soon as a door handle is released after manually opening the door. Advantageously, the pivot locking device remains activated during the entire extension movement of the latch bolt assembly from the outermost retracted position to the extended position and also subsequently, in order to block the pivoting movement of the latch bolt as long as the slide plate remains in the locked position. Even if the latch bolt assembly is obstructed by obstacles, e.g.If something prevents the latch from fully extending from the lock housing (e.g., a damaged door seal, a warped door leaf, a defective strike plate, or similar), the latch bolt remains locked against pivoting. Opening the door or manipulating the latch bolt, especially from the outside, is then no longer possible. This also applies to motor-assisted lock operation or operation using a locking cylinder.

[0017] The anti-slide locking device according to the invention is activated as soon as the slide plate is in the locked position and the latch bolt assembly is extended to its full extension position. Then, the latch bolt assembly cannot be moved, and the lock is completely locked. Advantageously, the activation and deactivation of the pivot locking device and the anti-slide locking device can be controlled by a common slide plate.

[0018] The pivot locking device and the displacement locking device can advantageously be configured to change to a deactivated state when the slide plate is in the release position. In the deactivated state, the pivot locking device and the displacement locking device disengage from the latch bolt in such a way that they respectively release the pivoting movement of the latch bolt and the displacement movement of the latch bolt assembly.

[0019] Preferably, the slide plate can be preloaded toward the locking position by a spring-loaded mechanism. The slide plate can then be automatically moved into the locking position by spring action, possibly assisted by gravity, as soon as it is no longer held in the release position.

[0020] In preferred embodiments of the invention, the latch bolt assembly can comprise a carrier which is guided in a sliding guide in a displacement direction transverse to the end face of the housing and is pretensioned towards an extended position by a pretensioning spring. The carrier can comprise a preferably cylindrical carrier section. The latch bolt assembly further comprises the latch bolt, which can be pivoted about a hinge axis oriented along the end face and preferably perpendicular to the displacement direction. The latch bolt assembly can further comprise a sliding sleeve which is arranged displaceably on the carrier section relative to the latch bolt and is pressed against the latch bolt by a spring means.

[0021] The sliding sleeve and the latch bolt can preferably be designed so that when the sliding sleeve presses on the latch bolt, the latch bolt is pivoted or tilted back into a defined starting position. For example, the latch bolt can have a suitably rounded rear side against which the spring-loaded sliding sleeve presses, the force being sufficient to pivot the latch bolt into its starting position. The starting position can be the position that allows an opened door to fall back into the lock in the conventional way, with the latch bolt assembly being pushed into the housing when it hits the striking plate. Alternatively, no defined starting position can be specified, and the pivoting or tilting of the latch bolt into the respective position can be achieved solely through the action of the striking plate.

[0022] In the preferred embodiments mentioned above, the pivot locking device and the displacement locking device can advantageously be configured to act directly against the sliding sleeve of the latch bolt assembly in order to block the pivoting movement or the sliding movement of the latch bolt assembly. The pivot locking device attached to the latch bolt assembly can engage directly on the sliding sleeve and press it against the latch bolt and lock it against pivoting movement, so that the latch bolt is no longer able to tilt about its pivot axis. The displacement locking device is supported on the one hand against the housing of the lock and, on the other hand, in the activated state, presses directly against the sliding sleeve and this against the latch bolt in order to effectively prevent any displacement movement of the latch bolt assembly.Advantageously, the displacement locking device and the pivot locking device do not interact with each other in any way. Their modes of operation are independent of each other except for the coupling with the slide plate.

[0023] In a particularly preferred embodiment, the sliding sleeve has a first and a second concave surface, which can be formed in the transverse direction, transversely to the end face of the lock housing on a rear side of the sliding sleeve facing away from the latch bolt, and in the longitudinal direction, along the end face of the lock housing on different sides with respect to the support section of the sliding sleeve. The pivot locking device can then be configured to act against the first concave surface, and the displacement locking device can be configured to act against the second concave surface. For example,The first concave surface of the sliding sleeve can be formed at the connection between the rear and the underside of the sliding sleeve in the use position, while the second concave surface can then be formed symmetrically to a longitudinal center axis of the latch bolt at the connection between the rear and the top of the sliding sleeve. In this way, the locking forces of the pivot locking device and the displacement locking device can advantageously be distributed evenly across the top and bottom of the sliding sleeve and the latch bolt, and the latch bolt can be loaded symmetrically in the fully locked state. This provides a particularly stable and secure locking of the latch bolt against pivoting and displacement and against possible tampering.

[0024] In advantageous embodiments, the pivot locking device can have a pivotable first locking lever, which preferably carries a first locking roller at one end thereof, which is configured to roll on the first concave surface. The displacement locking device can similarly have a pivotable second locking lever, which preferably carries a second locking roller at one end thereof, which is configured to roll on the second concave surface. When activated, the first and second locking levers are brought into engagement with the respective first and second concave surfaces and roll thereon until they fully engage this surface, thus preventing the respective pivoting or displacement movement. By using the locking rollers, frictional forces can be reduced, which can reduce wear and extend the service life and facilitate the operation of the pivot and displacement locking devices.

[0025] The first and second locking levers can preferably each be elastically preloaded in one direction against the latch bolt assembly by a spring means. As a result, the first locking lever of the pivot locking device can automatically roll into the associated first concave surface of the slide sleeve under spring force as soon as the slide plate changes to the locked position and relieves the first locking lever. The second locking roller of the sliding locking device can automatically roll into the second concave surface of the slide sleeve under the force of the spring means when the slide plate is in the locked position, the latch bolt assembly is extended to its outermost extension position, and the latch bolt is pivoted into its initial position.

[0026] In preferred embodiments of the invention, the lock may have an auxiliary latch which is displaceably mounted in the housing between an extended position, in which the auxiliary latch protrudes from the housing through an auxiliary latch opening in the front side, and a retracted position, in which the auxiliary latch is inserted into the housing. The auxiliary latch may be arranged such that it is pressed into the retracted position by the door frame or the strike plate when the door is closed, and may be urged outwards out of the housing by a compression spring. The lock may further have a retaining lever which is configured to hold the latch bolt assembly in an intermediate extension position, in which the latch bolt assembly only partially protrudes outwards beyond the front side of the housing.The auxiliary latch can then be configured to cooperate with the retaining lever to prevent pivoting of the retaining lever in the extended position, thus fixing the intermediate extension position of the latchbolt assembly. This can facilitate operation of the lock, e.g., for opening in the daytime function, and prevent the latchbolt from being fully locked when the door is open. In its retracted position, the auxiliary latch can permit pivoting of the retaining lever to allow the latchbolt assembly to be extended to the extreme extension position and locking of the latchbolt.

[0027] Preferably, the slide plate can extend continuously over a large part of the longitudinal extent of the bolt and be configured to interact with the various devices and components of the lock and enable the desired functionalities. For example, the slide plate can have a first gate opening designed to interact with the pivot locking device via a pin provided, for example, on the first locking lever in such a way that the slide plate, in the release position, deactivates the pivot locking device and disengages it from the latch bolt in such a way that pivoting of the latch bolt is unhindered or possible, and in the locking position, releases the pivot locking device for activation and blocking of the pivoting movement.

[0028] In addition, the slide plate can have a second gate opening which is designed to cooperate with the displacement locking device via a pin of a lever in such a way that the slide plate, in the release position, deactivates the displacement locking device and disengages it from the latch bolt such that displacement of the latch bolt arrangement is unhindered or possible, and in the blocking position, releases the displacement locking device for the activation and blocking of the displacement movement.

[0029] In the latter embodiment, the lever may additionally comprise a blocking projection arranged to lock the sliding locking device in the activated state when the slide plate is in the locked position. For example, the blocking projection may prevent the second locking lever from pivoting and releasing the latch bolt, e.g., from leaving the second concave surface of the pivot sleeve.

[0030] The lock according to the invention can be configured for different types of actuation. For example, the actuating device for manually actuating the latch bolt arrangement can have a rotatably mounted nut configured to receive a handle and a lever mechanism that functionally connects the nut to the slide plate. The slide plate can have a third gate opening configured and arranged to cooperate with a pin of the lever mechanism in order to be able to transfer the slide plate via the lever mechanism, for example, from the locked position to the released position. In this case, the pivot locking device and the sliding locking device are deactivated or released simultaneously.

[0031] The lever mechanism between the follower and the slide plate can be designed so that even a slight actuation of the handle, e.g., turning the handle or follower by less than 45°, preferably less than 30°, causes the slide plate to move into the release position. Advantageously, however, the follower is decoupled from the latch bolt assembly, so that actuation of the handle does not require the latch bolt assembly to be pushed into the lock housing. Thus, actuation of the handle in this manner does not require a great deal of force.

[0032] Additionally or alternatively, the actuating device for motor actuation can comprise an electric motor with a gear mechanism and a control device connected to the electric motor to control the motor. The slide plate can then comprise an actuating surface that can be coupled to the gear mechanism to enable the slide plate to be moved, for example, from the locked position to the released position by motor drive. In this case, the pivot locking device and the displacement locking device are deactivated and released, respectively, simultaneously.

[0033] The motorized actuator control can be triggered by a handle, successful access control verification, remote control, electric strike, or other means. The manual actuator and the motorized actuator can be implemented individually or in combination.

[0034] Furthermore, key operation of the lock can also be enabled. For this purpose, the actuating device can additionally or alternatively comprise a locking cylinder, the locking lug of which can be coupled to the slide plate via a force transmission mechanism in order to be able to move the slide plate from the locked position, for example, to at least the released position, by actuating the locking cylinder using a key. In this case, the pivot locking device and the sliding locking device are deactivated or released simultaneously. The actuating device based on the locking cylinder can be implemented in addition to the manual and / or motorized actuating device.

[0035] According to the invention, the slide plate can thus be designed with link openings or tracks, actuating and control surfaces in such a way that it enables both manual actuation and motor actuation and key actuation of the lock via the locking cylinder in order to switch the pivot locking device and the displacement locking device via the slide plate optionally into the release position or into the blocking position in order to release or block pivoting or tilting of the latch bolt or displacement of the latch bolt arrangement.

[0036] Advantageously, the lock configuration according to the invention, in particular the arrangement, arrangement, and movement of the latch bolt assembly, the slide plate, the pivot locking device, and the displacement locking device relative to one another, makes it possible to create a latch bolt assembly whose latch bolt, in the outermost extension position, protrudes more than 20 mm beyond the front of the lock housing. Since no lock components are arranged transversely behind the latch bolt in the lock housing, a latch bolt projection of more than 20 mm can be achieved even with very narrow locks with a width of, for example, only approximately 50 mm. When the latch bolt is fully locked, the door is thus extremely effectively secured against tampering and protected against burglary.

[0037] Furthermore, the lock according to the invention is characterized by its high degree of flexibility in its configurability for various applications. It can be configured as a panic lock for emergency exits, escape routes, and fire doors, or as a door lock for barrier-free living, with various functions, e.g., with a basic function in which the swing latch bolt is automatically locked after the door is closed, with a daytime function in which the swing and slide locks are permanently deactivated, or with a nighttime function with permanent locking of the swing latch bolt.

[0038] Further details of advantageous embodiments of the invention emerge from the drawing, the associated description and the subclaims.

[0039] Embodiments of the invention are illustrated in the drawings. They show: Fig. 1a a lock according to the invention in a partial side view in the locked state; Fig. 1b the lock according to the invention Fig. 1a in essentially the same side view and in the locked state, with the slide plate removed; Fig. 1c the castle after Fig. 1a and 1b in a top view, highly schematic; Figuren 2a-2c the lock according to the invention in essentially the same views as in Figuren 1a-c but in a release state; Figuren 3-6 the lock according to the invention in different functional states without slide plate; and Fig. 7 an enlarged detailed view of the lock according to the invention in the functional state of the Fig. 5 .

[0040] In the Figuren 1a-c and 2a-c 1 shows a detail of a lock 1 which is suitable for installation in front doors, apartment doors, hotel doors, fire protection doors, stairwell doors, garden gates and similar applications. The lock 1 has a housing 2 which is provided with a face plate 4 on its front side 3. The front side 3 or the face plate 4 has a latch bolt opening 6 through which a latch bolt 7 projects. The latch bolt 7 belongs to a latch bolt arrangement 8 which is mounted in the housing 2 so as to be linearly displaceable in a transverse direction 9. The transverse direction 9 is aligned essentially perpendicular to the front side 3 or the face plate 4. A sliding guide (not shown in detail here) serves to guide the latch bolt arrangement 8, which is formed, for example, in the base plate of the housing 2 or fastened to it.

[0041] The latch bolt assembly 8 includes a carrier 11, the latch bolt 7, and a sliding sleeve 12. The carrier 11 is guided in the sliding guide in the sliding or transverse direction 9 and is preloaded toward the end face 3 by a preload spring 13, which is supported between the carrier 11 and the housing 2. The carrier 11 contains a preferably cylindrical carrier section 14, on which the sliding sleeve 12 is arranged so as to be displaceable relative to the latch bolt 7. The latch bolt 7 is attached to the end face of the carrier section 14.

[0042] The sliding sleeve 12 has a front side 16 facing the latch bolt 7, which is essentially flat, and a rear side 17 parallel thereto, facing away from the latch bolt 7, and is pressed against the latch bolt by a compression spring not shown in detail in the figures. The rear side 17 of the sliding sleeve 12 has a first concave surface 18 and a second concave surface 19. The first concave surface 18 is recessed into the rear side 17 at the connection to the top side of the sliding sleeve 12 in the Figuren 1a ,b and in the use position. The second concave surface 19 is formed on the rear side 17 at the connection to the underside of the sliding sleeve 12.

[0043] The latch bolt 7 is pivotable or tiltable about a hinge axis 21, which is oriented in the longitudinal direction 22, essentially perpendicular to the transverse direction 9, along the front side 3 and in the Figuren 1b , c and 2cis merely indicated. The latch bolt 7 rests with its slightly rounded rear surface 23 against the sliding sleeve 12 and has a first and a second front surface 24, 26, which in plan view Fig. 1c and 2c an essentially triangular design of the latch bolt head.

[0044] A lock mechanism 27 is arranged in the lock 1, which, in conjunction with a number of actuating devices, supports different types of actuation of the latch bolt arrangement 8. The lock mechanism 27 includes, in particular, a slide plate 28, which extends continuously from a lower section of the lock 1 to an upper section of the lock 1, almost over its entire length. The slide plate 28 is mounted in the housing so as to be displaceable in the longitudinal direction 22, along the end face 2, and can be moved between a release position, in which the slide plate 28 is in the Fig. 2a shown upper position relative to the housing 2, and a locking position in which the slide plate 28 is in the position shown in Fig. 1a The slide plate 28 is moved by a spring mechanism 29 towards the locking position (lower position in Fig. 1a ) prestressed. In the Figuren 1b and 2b the slide plate 28 is omitted for illustrative purposes in order to better recognize the internal components of the lock 1.

[0045] The slide plate 28 has numerous active and actuating surfaces that serve to interact with other components of the lock 1. These active and actuating surfaces include a recess 31, which is arranged near a locking cylinder receptacle 32 and to which a force transmission mechanism (not shown in detail here) is assigned. This mechanism is designed to interact with a locking lug of a locking cylinder (not shown in detail here) that is received in the locking cylinder receptacle 32. By opening or closing the locking cylinder, the slide plate 28 can be moved upwards into the release position or downwards into the locking position via the force transmission mechanism.

[0046] The slide plate 28 further comprises a first link opening 33 which is designed and arranged to actuate a pivot locking device explained below, a second link opening 34 which is designed and arranged to cooperate with a displacement locking device explained in more detail below, a third link opening 36 which is designed and arranged to cooperate with a manual actuating device for the latch bolt arrangement 8 explained in more detail below, and at least one actuating surface 37 which is essentially flat here and extends in the transverse direction 9 and which is designed and arranged to cooperate with a motor actuating device for the latch bolt arrangement 8 explained in more detail below.

[0047] To lock and release the pivoting movement of the latch bolt 7, a pivot locking device 38 is provided, which is slidably mounted on the latch bolt assembly 8 together with the latter and is coupled to the slide plate 28. The pivot locking device 38 is configured to be activated and engage with the latch bolt 7 to block its pivoting movement as soon as the slide plate 28 is in the locked position.

[0048] The pivot locking device 38 includes a pivotable first locking lever 39, which is pivotally mounted about a pin 41. At one end, the first locking lever 39 carries a first locking roller 42, which is designed to roll on the first concave surface 18 of the sliding sleeve 12. At its other end, the first locking lever 39 carries a pin 43, which is designed to cooperate with the first slotted opening 33 of the slide plate 28 in order to be displaced or pivoted by the slide plate 28 and to cause a resulting pivoting of the first locking lever 39 about the pin 41. The first locking lever 39 is elastically preloaded against the latch bolt assembly 8 by a first spring means 44.

[0049] To lock and release the sliding movement of the latch bolt assembly 8, a sliding locking device 46 is provided, which is separate from the pivot locking device 38 and acts independently of the pivot locking device 38. The sliding locking device 46 is attached to the housing 2 and is operatively coupled to the slide plate 28. The sliding locking device 46 is configured to be activated and to directly engage the latch bolt 7 to block the sliding movement of the latch bolt assembly 8 when the slide plate 28 is in the locked position and the latch bolt assembly 8 is in its outermost extension position, in which the latch bolt 7 projects furthest outward through the latch bolt opening 6.

[0050] The sliding locking device 46 includes a second locking lever 47, which is pivotally mounted about a pin 48. At one end, the second locking lever 47 carries a second locking roller 49, which is designed to roll on the second concave surface 19 of the sliding sleeve 12. The second locking lever 47 further has a pin 51, which Fig. 2b is most clearly visible and which is arranged to cooperate with a lever 52 to raise the end of the second locking lever 47 with the second locking roller 49 as required or to rotate the bolt 48 counterclockwise (as in the Figuren 1a , b and 2a,b viewed from the side). The lever 52 is rotatably mounted for this purpose and has a lever lug 53 that engages with the pin 51 of the second locking lever 47. The lever lug 53 carries a pin 54 that is designed and arranged to cooperate with the second slotted opening 34 of the slide plate 28 in order to pivot the lever 52 and thus the second locking lever 47 therethrough.

[0051] The lever 52 further comprises, on its lower side facing the second locking lever 47, a blocking projection 56 which is arranged to engage a blocking pin 57 of the second locking lever 47 in the locking position of the slide plate 28, so as to block the displacement locking device 46 against pivoting in its activated state. A second spring means 58 engages the end of the second locking lever 47 opposite the end with the second locking roller 49, which spring means is arranged and configured to urge the second locking lever 47 in a direction against the latch bolt arrangement 8 (clockwise in the Figuren 1a , b and 2a,b ) elastically prestressed.

[0052] For manual operation of the latch bolt assembly 8, a manual actuation device 59 is provided, which in the illustrated embodiment comprises a nut 61 rotatably mounted in the housing 2, which nut has, for example, a square through-opening 62 for a door handle. The nut 61 is functionally connected to the slide plate 28 via a lever mechanism 63 in order to be able to transfer the slide plate 28 into the release position upon actuation of the door handle. The lever mechanism 63 comprises a driver lug 64 formed on the nut 61, which is designed and arranged to engage with a pin 66 of a lever element 67 that is rotatably mounted about an axis coaxial with the rotational axis of the nut 61.The lever element 67 has, in a section remote from the axis of rotation, a driver pin 68 which is designed and arranged to engage in the third link opening 36 of the slide plate 28 and to cooperate with it in such a way that the slide plate 28, when the door handle is actuated and the lever element 67 is pivoted counterclockwise (as shown in the . Figuren 1a , b and 2a,b viewed) into its release position. A tension spring 69 engages the nut 61 to move it in the opposite direction, i.e. clockwise (as in the Figuren 1a , b and 2a,b viewed) to return it and the door handle to a horizontal starting position, for example.

[0053] For motor actuation of the latch bolt assembly 8, a motor actuation device 70 is provided with an electric motor 71 connected to a reduction gear device 72. In the example shown, the gear device 72 includes a worm 73 and a worm gear 74 meshing with it. The rotational axis of the worm gear 74 is preferably perpendicular to the transverse direction 9 and the longitudinal direction 22. The electric motor 71 can directly support the worm 73 on its motor shaft. If necessary, it can itself be designed as a geared motor with a reduction gear.

[0054] The motor actuation device 70 also includes a control device 75, which is electrically connected to the electric motor 71 on the one hand and to a battery or other electrical energy storage device for supplying power to the motor actuation device 70 on the other. The control device 75 can be connected to a radio communication device for remote control. Alternatively, another communication device can be provided for remote control, electrical access control, or other release.

[0055] The rotatably mounted worm gear 74 has an eccentric pin 76 which is designed and arranged to selectively engage and cooperate with the actuating surface 37 of the slide plate 28. By rotating the worm gear 74 when the electric motor 71 is actuated by the control device 75, the eccentric pin 76 can be moved from its bottom dead center, as shown in the Figuren 1a , bshown, to its top dead center, as shown in the Figuren 2a,b displayed and transferred back.

[0056] The lock 1 further comprises an auxiliary latch 77, which makes it possible to detect the closed state of a door (not shown in detail here) supporting the lock 1, in order to fully lock the latch bolt assembly 8. The auxiliary latch 77 is displaceably mounted in the housing 2 between a position extended from the housing 2, in which the auxiliary latch 77 protrudes from the housing 2 through an auxiliary latch opening (not shown in detail here) on the front side 3 or in the face plate 4, and a position inserted into the housing 2, and is urged outward from the housing 2 by a spring element. The auxiliary latch 77 carries an auxiliary latch projection 81 on its upper side, which projects essentially vertically upwards.

[0057] By additionally focusing on the Fig. 7 Referring to Figure 1, which shows an enlarged detailed view of the lock 1, it can be seen that the auxiliary latch 77 is assigned a retaining lever 82 which, in plan view, has a substantially U-shaped configuration. The retaining lever 82 is arranged so as to be rotatable or pivotable on a pivot pin 83. A compression spring 84, which is supported between a first leg 86 of the U-shaped retaining lever 82 and the forend 4, biases the retaining lever 82 to pivot about the pivot pin 83 in a counterclockwise direction (as can be seen in the figures). A second leg 87 of the U-shaped retaining lever 82 is intended to engage a lower end portion 88 of the carrier 11 of the latch bolt assembly 8 (cf. Fig. 7 ) to hold it in an intermediate extension position in which the latch bolt assembly 8 only partially projects outwards beyond the front side 3 of the housing 2. This prevents the latch bolt assembly 8 from moving into the Figuren 1a-c and 2a-c The latch bolt assembly 8 can only be extended to the outermost extension position if, by pivoting the retaining lever 82, the free end of the second leg 87 disengages from the lower end portion 88 of the support 11 of the latch bolt assembly 8.

[0058] In order to prevent or enable pivoting of the retaining lever 82 caused by the compression spring 84, the retaining lever 82 has a contoured lower surface 89 with a first surface portion 91 and a second surface portion 92. The first surface portion 91 is arranged to, in the extended state of the auxiliary latch, as in Fig. 7 shown, to be supported by the auxiliary latch projection 81, thereby preventing pivoting of the retaining lever 82. The second surface portion 92 extends from the first surface portion 91 toward the rear of the lock 1, away from the end face 3, and is slightly curved upwards to define a recess 93 configured to receive the auxiliary latch projection 81 in the retracted position of the auxiliary latch 77, thereby enabling pivoting of the retaining lever 82 about the pivot pin 83 and disengagement of the retaining lever 82 from the carrier 11 of the latch bolt assembly 8.

[0059] A leg spring 94 is mounted in the space between the first and second legs 86, 87 of the retaining lever 82. The leg spring 94 has a spring arm 96 that projects toward and is fixed to the auxiliary latch 77. The leg spring 94 biases the auxiliary latch 77 toward the extended position.

[0060] The functioning of the lock 1 described above will now be explained with reference to the Figuren 1-7 be described in more detail. Lock 1 works as follows:

[0061] Figuren 1a-c show a locked state of the lock 1, which results when the door is closed and the latch bolt arrangement 8 engages in a strike plate opening 97 of a strike plate fastened to the door frame 98. The latch bolt arrangement 8 is in its outermost extension position, in which the latch bolt 7 protrudes more than 20 mm outwards beyond the front side 3. The bolt projection can be more than 20 mm, for example 22 mm or even more. Such a large bolt projection of the pivoting or tilting latch bolt 7 is possible with the inventive configuration and arrangement of the components of the lock 1 despite the very small width of the lock 1, for example only about 50 mm.

[0062] As from Fig. 1a As can be seen, the slide plate 28 is in its lower or locked position, in which an upper edge of the first link opening 33 presses against the pin 43 of the first locking lever 39 of the pivot locking device 38 in order to hold the first locking lever 39 in a pivoted position such that the first locking roller 39 is pressed against the first concave surface 18 of the sliding sleeve 12 of the latch bolt arrangement 8. This is supported by the first spring means 44 of the pivot locking device 38. The pivot locking device 38 is consequently in its locked position and blocks the latch bolt 7 against pivoting or tilting. Any force applied to the latch bolt 7 in order to pivot it is securely absorbed by the first locking lever 39 with the first locking roller 42 and pivoting or tilting of the latch bolt 7 is prevented, even in the event of attempts at manipulation.

[0063] The displacement locking device 46 is also in the locked position, in which the second locking lever 47 with the second locking roller 49 engages directly into the second concave surface 19 of the slide sleeve 12 and effectively and safely prevents the latch bolt assembly 8 from being pushed into the housing 2, even if improper force is applied to the latch bolt 7. The lever 52 prevents the second locking lever 47 from pivoting upwards to release the displacement lock, as its blocking projection 56 presses against the blocking pin 57 on the second locking lever 47.Due to the advantageous symmetrical arrangement of the engagement connection between the first locking roller 42 and the first concave surface 18 to the engagement connection between the second locking roller 49 and the second concave surface 19 of the sliding sleeve 12 with respect to a longitudinal center line of the latch bolt 7, the latch bolt 7 is loaded symmetrically and a particularly high level of security against manipulation attempts is achieved.

[0064] When the latch bolt assembly 8 is actuated by the motor, the eccentric pin 76 assumes its bottom dead center and is not in engagement with the actuating surface 37 of the slide plate 28. As a result, the slide plate 28 can be moved into the position shown in the drawing under the action of the spring mechanism 29 and with the assistance of the force of gravity. Fig. 1a , b shown lower locking position or remain there.

[0065] When the door is closed, the auxiliary latch 77 is largely retracted into the housing 2. The leg spring 94 urges the auxiliary latch 77 out of the housing 2. However, since no auxiliary latch opening is provided in the door frame to accommodate the auxiliary latch 77, a strike plate in the door frame prevents the auxiliary latch 77 from moving outward. In the retracted position of the auxiliary latch 77, the auxiliary latch projection 81 is located below the second surface portion 92 in the recess 93 of the retaining lever 82, and the retaining lever 82 is disengaged from the lower end portion 88 of the support 11 of the latch bolt assembly 8, so that the latch bolt assembly 8 is extended to its outermost extension position.If the latch bolt 7 engages in the strike plate opening 97 and both the pivot locking device 38 and the sliding locking device 46 are activated, the door cannot be opened by pushing or pulling the door leaf or by manipulating the latch bolt 7.

[0066] To open the door, the electric motor 71 can be briefly activated by the control device 75 to rotate the worm gear 74 by approximately 180° via the worm 73. This brings the eccentric pin 76 to its top dead center or close to it. The eccentric pin 76 then lifts the slide plate 28 into its upper or release position via the actuating surface 37. In this state, which is Figuren 2a-c As shown, both the pivot locking device 38 and the displacement locking device 46 are deactivated. When the slide plate 28 is moved into its release position, a lower edge portion of the first link opening 33 entrains the pin 43 on the first locking lever 39 of the pivot locking device 38, so that the first locking lever 39 is pivoted and the first locking roller 42 rolls out of the first concave surface 18 of the sliding sleeve 12 of the latch bolt assembly 8.

[0067] Similarly, a lower edge portion of the second link opening 34 engages the pin 54 of the lever 52, and the lever nose 53 pivots the second locking lever 47 via the pin 51 in such a way that the second locking roller 49 rolls out of the second concave surface 19 of the sliding sleeve 12 of the latch bolt assembly 8. In the deactivated state of the pivot locking device 38 and the displacement locking device 46, the latch bolt assembly 8 is completely unlocked, allowing both pivoting or tilting of the latch bolt 7 and displacement of the entire latch bolt assembly 8 into the housing 2.

[0068] The door can now be opened by turning it in the direction of arrow 99 Fig. 2c The latch bolt 7 is released and can be pivoted about its hinge axis 21. Due to the force acting on the door leaf in the direction of arrow 99, the first front surface 24 of the latch bolt 6 engages with the edge of the strike plate, so that the latch bolt 7 is pivoted about the hinge axis 21 into the Fig. 2c shown position is pivoted or tilted. Upon further application of force, the latch bolt assembly 8 is pressed into the housing 2 under the effect of the force acting through the edge of the strike plate opening 97 on the first front surface 24 of the latch bolt 7, until the latch bolt 7 assumes its fully retracted position in the housing 2, as shown in Fig. 3 The latch bolt 7 has left the strike plate opening 97 and overcomes the door frame 98, so that the door is almost open. In this state, the slide plate 28 remains in the upper release position (as shown in Fig. 2a ), and the pivot locking device 38 and the shift locking device 46 remain in their deactivated state.

[0069] As soon as the latch bolt 7 overcomes and leaves the door frame 98, the latch bolt 7 can be moved into its Fig. 1c pivot or tilt back to the initial position shown. In addition, the entire latch bolt assembly 8 can extend out of the housing 2 again. At the same time, the auxiliary latch 77 is pushed outwards out of the housing 2 by the spring arm 96 of the leg spring 94. The auxiliary latch projection 81 thereby passes under the first surface section 91 of the lower surface 89 of the holding lever 82. As a result, the holding lever 82 is pivoted clockwise (as viewed in the figures) against the action of the compression spring 84, so that the free end of the second leg 87 of the holding lever 82 holds and secures the lower section 88 of the carrier 11 of the latch bolt assembly 8 and prevents the latch bolt assembly 8 from being able to extend completely. The latch bolt assembly 8 can only extend to the Fig. 4 shown intermediate extension position, in which the latch bolt 7 protrudes, for example, by about 10-15 mm beyond the front side 3 of the lock 1. In the functional state according to Fig. 4 The door is still open, and the slide plate 28 continues to be held in its upper release position by the eccentric pin 76. The pivot locking device 38 and the sliding locking device 46 remain in their deactivated state.

[0070] Depending on the embodiment, the control device 75 transfers the motor actuating device 70 into the locking position, for example, after a preset time of, for example, a few seconds or after receiving a closing signal (locking signal). For this purpose, the eccentric pin 76 is returned to its bottom dead center position by controlling the electric motor 71 and rotating the worm gear 74. Fig. 5a The eccentric pin 76 releases the actuating surface 37 of the slide plate 28, so that it returns to its Fig. 5a shown lower locking position. An upper edge of the first link opening 33 takes the pin 43 of the pivot locking device 38 with it, so that the first locking lever 39 is pivoted counterclockwise and the first locking roller 42 rolls into the first concave surface 18 of the sliding sleeve 12. The pivot locking device 38 is thus activated and blocks the latch bolt 7 against pivoting or tipping. The sliding locking device 46 remains in the deactivated state because the second locking lever 47 with its second locking roller 49 cannot roll into the second concave surface 19 of the sliding sleeve 12 when the latch bolt 7 is in the intermediate extension position. This is prevented by the upper side of the latch bolt 7.

[0071] Fig. 5b shows the functional status after Fig. 5a without the slide plate 28, and Fig. 7 shows an excerpt from Fig. 5b around the latch bolt assembly 8 in an enlarged detail view. In this functional state, the latch bolt assembly 8 can continue to fulfill the conventional latch function, so that the door can be closed by simply pulling it shut, without having to operate a handle. When closing the door, as in Fig. 6 illustrated, the latch bolt assembly 8 is pressed into the housing 2 under the action of a force exerted by the door frame or the striking plate on the second front surface 26 of the latch bolt 7 in order to overcome the door frame 98 up to the striking plate opening 97. At the same time, the auxiliary latch 77 is pushed into the housing 2, so that the auxiliary latch projection 81 penetrates up to the area of the recess 93 below the second surface portion 92 of the lower surface 89 of the retaining lever 82 and releases the retaining lever 82 for pivoting. The compression spring 84 then pivots the retaining lever 82 about the pivot pin 83 in a counterclockwise direction (as viewed in the figures), and the retaining lever 82 releases the lower end portion 88 of the carrier 11 of the latch bolt assembly 8.As a result, when the latch bolt assembly 8 encounters the strike plate opening 97, it can be pushed into the strike plate opening 97 by the force of the pre-tensioning spring 13 and move out into its fully extended position.

[0072] The slide plate 28 is in its lower locking position during this process, and the pivot locking device 38 is advantageously already activated, so that the first locking lever 39 with the first locking roller 42 presses against the second concave surface 19 of the slide sleeve 12 during the entire extension movement of the latch bolt assembly 8, thus effectively preventing pivoting or tilting of the latch bolt 7. Even if the latch bolt assembly 8 is prevented from fully extending by an external obstacle, such as a defective door seal, a warped door leaf, a damaged strike plate, or the like, the latch bolt 7 remains blocked from pivoting or tilting. The door cannot be opened solely by a pulling force from the outside or by a compressive force on the door leaf from the inside. It remains closed even if the latch bolt assembly 8 is not fully extended.As a result, the security of the lock 1 according to the invention is significantly improved.

[0073] As soon as the latch bolt assembly 8 is fully extended and reaches its outermost extension position, the second locking lever 47 with its second locking roller 49 can roll into the second concave surface 19, so that the displacement locking device 46 is activated and effectively prevents displacement of the latch bolt assembly 8. The lock 1 is then again in the Figuren 1a-c shown fully locked state.

[0074] As an alternative to motor operation, the lock 1 according to the invention can also be operated manually. To open the door, starting from the Figuren 1a-c In the fully locked state, the nut 61 can be turned by a door handle by a few degrees. The driver lug 64, via the pin 66, takes the lever element 67 with it, which in turn engages via the driver pin 68 at an upper edge of the third slotted opening 36 and pivots the slide plate 28 into the upper release position. As with motorized actuation, this deactivates the pivot locking device 38 and the displacement locking device 46. The lock 1 is then in the position shown in the Figuren 2a-c shown state in which the door is opened by pressing on the door leaf in the direction of arrow 99 ( Fig. 2c ) can be easily pushed open.

[0075] When the door is opened and the door handle is released, the slide plate 28 automatically changes to its lower locking position under the action of the spring mechanism 29 and the force of gravity, and the lock 1 takes the position in Fig. 5shown state, in which the latch bolt assembly 8 is extended into the intermediate extension position, the pivot locking device 38 is activated and effectively prevents pivoting or tilting of the latch bolt 7, while the displacement locking device 46 is deactivated and allows displacement of the latch bolt assembly 8. The door can then be closed in the same manner as described above, by simply pulling it shut, without operating the door handle.

[0076] Alternatively, a locking cylinder (not shown) arranged in the locking cylinder receptacle 32 can also be used to open the door from the outside. If the locking cylinder is unlocked with a key, the locking lug of the locking cylinder can act on the slide plate 28 via the force transmission mechanism and move it into the upper release position to deactivate the pivot locking device 38 and the sliding locking device 46, completely unlock the lock 1, and enable the door to be pulled or pushed open.

[0077] Of course, only one type of actuation can be implemented: manual actuation, motorized actuation, and locking cylinder actuation, or any combination of these can be provided. The lock is therefore flexibly configurable and suitable for various applications, including panic and fire doors, doors for barrier-free living, and in combination with electric openers. Even with manual actuation, handling is relatively simple because a door handle only needs to be operated with little force to deactivate the pivot locking device 38 and the sliding locking device 46, but not to insert the latch bolt assembly 8. The use of the locking rollers 42, 49 ensures smooth operation of the locking devices 38, 46. The lock 1 is robust, low-wear, and ensures a long service life.

[0078] A lock 1, in particular a door lock, is provided for use in panic and fire doors, for doors for barrier-free living, or for other applications. The lock 1 comprises a housing 2 with a front face 3, a latch bolt assembly 8 displaceably mounted in the housing 2, a slide plate 28 displaceably mounted in the housing 2 along the front face 3, a pivot locking device 38 for locking and releasing the pivoting movement of the latch bolt 7, and a displacement locking device 46 for locking and releasing the displacement movement of the latch bolt assembly 8. The latch bolt assembly 8 is movable between an extended position protruding beyond the front face 3 and a retracted position retracted into the housing 2, and has a pivotably mounted latch bolt 7. The slide plate 28 is movable between a locked position and a released position by an actuating device 59, 70.The pivot locking device 38 is slidably mounted on the latch bolt assembly 8 together therewith, coupled to the slide plate 28, and configured to be activated and block pivotal movement of the latch bolt 7 as soon as the slide plate 28 is in the locked position. The displacement locking device 46 is separate from the pivot locking device 38 and mounted on the housing 2, coupled to the slide plate 28, and configured to be activated and block displacement movement of the latch bolt assembly 8 when the slide plate 28 is in the locked position and the latch bolt assembly 8 is in its extreme extended position.

Claims

1. A lock (1), in particular for doors, comprising a housing (2) which has an end face (3) with a latch bolt opening (6); comprising a latch bolt arrangement (8) which is displaceably mounted in the housing (2) transversely to the end face (3) and which is movable between an extended position projecting beyond the end face (3) through the latch bolt opening (6) and a retracted position retracted into the housing (2), the latch bolt arrangement (8) having a pivotably mounted latch bolt (7); comprising a slide plate (28) which is displaceably mounted in the housing (2) along the end face (3) and which is movable between a locking position and a release position by an actuating device (59, 70); comprising a pivot locking device (38) for locking and releasing the pivoting movement of the latch bolt (7), wherein the pivot locking device (38) is mounted on the latch bolt arrangement (8) so as to be slidable together therewith, coupled to the slide plate (28) and configured to be activated and engage with the latch bolt (7) to block its pivoting movement as soon as the slide plate (28) is in the locking position; and comprising a displacement locking device (46) separate from the pivot locking device (38) for locking and releasing the displacement movement of the latch bolt arrangement (8), wherein the displacement locking device (46) is attached to the housing (2), coupled to the slide plate (28) and configured to be activated and to engage with the latch bolt (7) in order to block the displacement movement of the latch bolt arrangement (8) when the slide plate (28) is in the locking position and the latch bolt arrangement (8) is in its outermost extended position.

2. The lock (1) according to claim 1, wherein the pivot locking device (38) and the displacement locking device (46) are arranged to change to a deactivated state and to release the pivoting movement of the latch bolt (7) and the displacement movement of the latch bolt arrangement (8) when the slide plate (28) is in the release position.

3. The lock (1) according to claim 1 or 2, wherein the slide plate (28) is biased by a spring accumulator (29) in the direction of the locking position.

4. The lock (1) according to any of the preceding claims, wherein the latch bolt arrangement (8) comprises a carrier (11) which is displaceably guided in a sliding guide and is biased by a biasing spring (13) in the direction of an extended position, wherein the carrier (11) has a preferably cylindrical carrier section (14), the latch bolt (7), which is pivotable about a hinge axis (21), and a sliding sleeve (12), which is displaceably arranged on the carrier section (14) relative to the latch bolt (7) and is pressed against the latch bolt (7) by a spring means.

5. The lock (1) according to claim 4, wherein the pivot locking device (38) and the displacement locking device (46) are arranged to act against the sliding sleeve (12) of the latch bolt arrangement (8) in order to block the pivoting movement and the displacement movement of the latch bolt arrangement (8).

6. The lock (1) according to claim 5, wherein the sliding sleeve (12) has a first and a second concave surface (18, 19) which are formed in a transverse direction (9) transverse to the end face (3) of the housing (1) on a rear side (17) facing away from the latch bolt (7) and in a longitudinal direction (22) along the end face (3) of the housing (1) on different sides with respect to the carrier section (14) of the sliding sleeve (12), wherein the pivot locking device (38) is arranged to act against the first concave surface (18) and the displacement locking device (46) is arranged to act against the second concave surface (19).

7. The lock (1) according to claim 6, wherein the pivot locking device (38) comprises a pivotable first locking lever (39) which carries at one end a first locking roller (42) which is arranged to roll on the first concave surface (18), and the displacement locking device (46) comprises a pivotable second locking lever (47) which carries at one end a second locking roller (49) which is arranged to roll on the second concave surface (19).

8. The lock (1) according to claim 7, wherein the first and second locking levers (39, 47) are each elastically biased in a direction against the latch bolt arrangement (8) by a spring means (44, 58).

9. The lock (1) according to any of the preceding claims, further comprising an auxiliary latch (77) which is displaceably mounted in the housing (2) between a position extended from the housing (2) and a position inserted into the housing (2), and a retaining lever (82) which is arranged to retain the latch bolt arrangement (8) in an intermediate extended position, in which the latch bolt arrangement (8) projects only partially outwards beyond the end face (3) of the housing (2), wherein the auxiliary latch (77) is arranged to cooperate with the retaining lever (82) to prevent pivoting of the retaining lever (82) in the extended position and to permit pivoting of the retaining lever (82) in the inserted position in order to permit extension of the latch bolt arrangement (8) into the outermost extended position.

10. The lock (1) according to any of the preceding claims, wherein the slide plate (28) has a first link opening (33) which is designed to cooperate with the pivot locking device (38) via a pin (43) of the latter in such a way that the slide plate (28) deactivates the pivot locking device (38) in the release position and releases the pivot locking device () for activation in the locking position.

11. The lock (1) according to any of the preceding claims, wherein the slide plate (28) has a second link opening (34) which is designed to cooperate with the displacement locking device (46) via a pin (54) of a lever (52) in such a way that the slide plate (28) deactivates the displacement locking device (46) in the release position and releases the displacement locking device (46) for activation in the locking position.

12. The lock (1) according to claim 11, wherein the lever (52) has a blocking projection (56) arranged to block the displacement locking device (46) in the activated state in the locking position of the slide plate (28).

13. The lock (1) according to any of the preceding claims, wherein the actuating device (59) for manually actuating the latch bolt arrangement (8) comprises a rotatably mounted nut (61) adapted to receive a handle and a lever mechanism (63) which operatively connects the nut (61) to the slide plate (28), and the slide plate (28) has a third link opening (36) which is arranged and disposed to cooperate with a pin (66) of the lever mechanism (67) in order to be able to move the slide plate (28) via the lever mechanism (63) at least into the release position.

14. The lock (1) according to any of the preceding claims, wherein the actuating device (70) for motor actuation has an electric motor (71) with a transmission device (72) and a control device (75) which is connected to the electric motor (71) in order to control the latter, and the slide plate (28) has an actuating surface (37) which can be coupled to the transmission device (72) in order to be able to move the slide plate (28) in a motor-driven manner at least into the release position.

15. The lock (1) according to any of the preceding claims, wherein the actuating device comprises a lock cylinder which is coupled to the slide plate (28) via a force transmission mechanism in order to be able to move the slide plate (28) at least into the release position by actuating the lock cylinder.

16. The lock (1) according to any of the preceding claims, wherein the latch bolt arrangement (8) has a latch bolt projection of more than 20 mm in its outermost extended position.