EP2031162B1 - Self-locking door lock - Google Patents

Description

The present invention relates to a self-locking lock, in particular for doors or the like. In particular, the present invention relates to a lock with a slidably mounted, biased by a spring latch bolt assembly having a combined of a trap and a latch latch bolt, which continues automatically in the door closed position extends out of the lock housing than in the door open position to lock the lock.

Such a door lock is, for example, from the DE 32 41 273 known. It has a case that is held by a lock with the door open in an only partially disengaged intermediate position in which it protrudes only with its frontally arranged ramp over the lock plate, by a lock. To release the lock, a trigger mechanism is provided, which includes a arranged below the case and parallel to this sliding slider and associated linkage, which acts on the lock. The trigger mechanism is biased by a spring in the direction of the lock plate.

When the door closes, the trap slides back into the lock as it hits the strike plate. At the same time, the strike plate presses over the slider on the linkage of the trigger mechanism, whereby the lock is released, so that in the door closing position, the trap automatically moves deeper under the action of its spring in the strike plate. This is the breakthrough security the door is raised. Compared to simple latch locks, it is now harder to forcibly move back the trap by introducing a sufficiently solid burglary tool, such as a sheet metal, screwdriver or the like., In the door gap located between the door lock and the strike plate.

However, it has been considered disadvantageous that the trigger formed by the sliding body is formed as an auxiliary trap which projects between the latch and an additional key-operated latch and is mounted in the lock box together with the lock underneath the latch bolt. The trigger located in this way can be pressed in unintentionally with the door open unintentionally, as a result of which the latch is prematurely moved out to its fully disengaged position. The door can then not be closed without a handle operation and can be damaged if it is slammed inadvertently. The lock is thus unsuitable for use, for example, in fire doors, panic doors or similar applications requiring high security. In addition, the case is already released by the trigger mechanism for their full extension movement, although the slider has been pressed by the strike plate, the case, however, has not been retracted into the strike plate opening, for example when not fully pressed into the closed position door leaf. If the door were opened again, the trap would again be inappropriate with the door open in its fully disengaged position.

To prevent this, is in the DE 8 914 367 U1 proposed to accommodate the trigger in the latch bolt itself protected. The trigger is in the form of a double-armed release lever, which in a horizontally extending recess of the latch bolt head arranged and is pivotally mounted about an axis extending transversely thereto. The release lever has at its front end at the level of the ramp an over the locking surface of the latch bolt head projecting release nose, which cooperates with the associated inner wall side of the striking plate opening, and a short distance behind arranged locking lug for engaging behind the lock plate on. At the rear end of the release lever is laterally offset from the pivot axis, a latch spring is provided which seeks to push the latch bolt in the extended position and the release lever in the locked position.

Through this training can be ensured that the trigger and the locking lug located on it release the latch bolt for its full extension movement only when the free end of the latch bolt is already snapped into the strike plate opening. However, the above-mentioned false lock can not be completely avoided. After the release lever is pivotally mounted on the latch bolt head and protrudes its front end over the locking surface of the latch bolt head, can be operated with carelessness, eg. In a collision with a person or an object, or deliberately the release lever and the lock can be canceled with the door open. In addition, no means are provided to secure the latch bolt in its fully disengaged position against violent indentations. It can thus not be completely ruled out that with a special, introduced between the door leaf and the door frame tool the latch bolt forcibly pressed into the lock case and the door can be opened.

In a well-known from practice development of this castle therefore an additional locking device is provided to the latch bolt in his complete to secure the disengaged position against being pressed in. Serves this purpose, another pivotally mounted locking lever which is biased by a spring and having a locking lug which engages a vertical shoulder of the latch bolt when it is fully disengaged. An additional linkage, the locking lug is brought in handle operation with the latch latch disengaged to release the latch bolt for a retraction movement. The lock has a relatively large number of items that are sometimes designed to be complicated and to couple with each other, whereby the structure is relatively difficult and expensive.

On this basis, it is an object of the present invention to simplify the construction of such a lock with an automatically locking latch bolt. In particular, it is an object of the invention to provide such a self-locking lock, which offers a great security against tampering in a simplified structure.

This object is achieved by the castle with the features of claim 1.

The lock according to the invention, in particular door lock, has a housing and a latch bolt arrangement arranged in the housing, to which belongs a displaceably mounted and spring-loaded latch bolt with a latch bolt head which is in a fully engaged position in which it is substantially completely accommodated in the housing , A fully disengaged position in which the latch bolt head protrudes furthest out of the housing, and in a partially disengaged intermediate position can be transferred. A first locking device is for locking the latch bolt in its partially disengaged Intermediate position established to prevent this from further disengagement. A trigger mechanism is configured to actuate disengagement of the latch bolt to its fully disengaged position and includes a trigger member slidably disposed within the latch bolt head for disengaging the first latch assembly. A second locking means is arranged to lock the latch bolt in its fully disengaged position to prevent shifting of the latch bolt. An actuator is used to move the latch bolt, if necessary, for example. By means of a pusher or key, in its fully engaged position to open the lock.

According to the invention, the second locking device and the actuating device on a common swash plate, which carries a control cam which acts directly on this in all positions of the latch bolt. The control curve is divided into a first section and a second section. The first cam portion is effective in the fully disengaged position of the latch bolt and is adapted to prevent displacement of the latch bolt from outside on the force of the latch latch head, but to allow retraction of the latch bolt via the actuator. The second cam portion is operative between the partially disengaged intermediate position and the fully engaged position of the latch bolt and is adapted to permit or cause displacement of the latch bolt upon actuation of the actuator as well as application of external force to the latch latch.

According to the invention thus several measures are provided to the reliability of the function of the lock and to improve security against unintentional or unauthorized manipulation of the lock. Due to the largely protected housing of the trigger element in the latch bolt head, in particular in the blocking surface, and its displaceable arrangement in the horizontal direction, parallel to the blocking surface is the risk of false triggering of the trigger mechanism with the door open compared to a pivotally mounted shutter release according to the prior art reduced. For this purpose, a vertical force would be required only slightly beyond the locking surface of the latch bolt laterally projecting outer face of the trigger element and a minimum displacement of the trigger element relative to the latch bolt. Both is at least unintentionally difficult to achieve and is also effectively prevented by the outermost edge of the latch bolt head at the end of its ramp. The first locking device holds the latch bolt securely with the door open in its intermediate position. The embodiment of the invention also ensures that the trigger element of the strike plate is only then pressed and releases the latch bolt for its full extension movement only when the free end of the latch bolt is already snapped into the strike plate opening, so that the latch bolt actually completely in his Locking position is disengaged. In this position, the latch bolt is securely held by the second locking device, so that even when inserting a specially designed tool in the gap between a door leaf and a door frame of the latch bolt can not be pushed back into the castle. Manipulation is thereby largely prevented. The lock can only be opened via the actuating device, which is able to transfer the latch bolt into a fully engaged position by releasing the lock of the second locking device. The lock is for use in fire doors, Panic doors, hotel doors or similar applications well suited.

Despite the numerous measures, the lock has a simple structure. This is particularly because the second locking device and the actuating device together use the swivel disk according to the invention with a specially designed control cam, which always acts directly on the latch bolt and, depending on the position of the latch bolt, permits or prevents it from being displaced while the swashplate is being given. An additional locking lever or the like. With associated bearing and biasing means is not needed. The number of parts can be significantly reduced and the structure simplified. As a result, manufacturing costs and vulnerabilities of the lock on wear and other defects or malfunctions can be reduced.

In one embodiment, the latch bolt has a carrier integrally connected to the latch bolt head, which is slidably guided in the housing and carries an engagement means, which engages with the control cam of the swash plate. In an advantageous embodiment, the engagement means is formed by an engagement bolt attached to the support, comprising a roller body, e.g. a roller, roller or the like., Rotatably holding, which rolls on the control cam. The friction occurring between the engagement means and the control cam can be reduced and high ease of operation can be achieved upon actuation of the lock.

The first locking device may be formed by a pivotally mounted, preferably one-armed locking lever, which is biased by a spring means and having a locking lug to a provided on the latch bolt Advantage to take advantage of. As a result, the latch bolt is locked in its intermediate position. The locking lever may further include a control surface with which the trigger element cooperates to release the lock. The first locking device is thus relatively simple.

The triggering element may, for example, be designed in the form of an elongate, essentially parallelepiped or latch-shaped slide, which is guided longitudinally displaceably in horizontal recesses of the latch bolt head and of the housing. For example. may be formed in the locking surface of the latch bolt head a cross-sectionally substantially rectangular groove from which the triggering element protrudes only slightly beyond the locking surface of the latch bolt head. As a result, the trigger element occurs in the door open position practically neither visible in appearance, nor can it be operated unintentionally. This is especially true for folding doors in which the trigger element between the projecting door rabbet and the latch bolt is hardly unintentionally touched and inaccessible to fingers of an average adult person. In addition, the groove in the latch bolt head preferably ends in close proximity, but at a small distance to the outer edge of the latch bolt head, so that the outermost end face of the trigger element is set back with respect to this outer edge. As a result, the security against intentional or unwanted false triggering can be further increased.

Inside, the triggering element can carry a control nose, which can interact with the control surface of the first locking device, in particular of the locking lever, to release the latch bolt as the door closes.

In addition, the triggering element is preferably by a Spring element, for example. A compression spring biased outward in the direction of the latch bolt head. In a space-saving design, the coil spring surrounds a telescoping device which has a receiving tube secured to the housing, which is aligned parallel to the direction of displacement of the latch bolt assembly, and a shaft slidably received in the receiving tube and connected to the control lug. The telescopic device additionally prevents jamming or jamming of the triggering element in its reciprocation.

The actuator may include a manual actuator for manual operation of the latch assembly. In particular, it can have a rotatably mounted nut which is adapted for the application of a pusher and which can be associated with a biasing means counteracting its rotation in one direction in order to determine the actuating force.

The rotational movement of the nut is translated by a gear mechanism into a reciprocating motion of the latch assembly. The transmission device may, for example, have a driving plate, which is positively connected via a coupling device with the nut to be rotated together with the nut around its axis. In one embodiment, the coupling device has a first positive-locking element integrally formed on the nut and at least one second positive-locking element fastened to the driving plate and forming coupling elements.

The coupling connection can also be detachable. For this purpose, a coupling element, for example. A pin which serves to couple the two coupling members together, and, for example. An electric motor may be provided, the drive shaft acts on the coupling element via a clutch actuating element, selectively bringing the two coupling elements into or out of engagement with one another in order to establish or separate a form-locking connection therebetween. It is possible to provide two coupling devices and depending on the configuration engage such that the door can be opened via a pusher or the like. Only from one side or from both sides of the door.

The transmission device preferably also has a connecting element, which is connected in an articulated manner both to the co-design disk and to the swivel disk, in order to pivot the swivel disk during a nut rotation.

The lock may also include a key operated lock cylinder coupled to the latch bolt assembly via another gear means such that it can be moved by key operation to open the latch. The further transmission device can have a slider element coupled to the lock cylinder, which is arranged to be displaceable substantially transversely to the latch bolt arrangement, and a pivot lever. It can also use the connecting element and the swash plate of the first transmission device, so that parts can be saved. The pivot lever is preferably pivotally mounted about an axis parallel to the axis of the swashplate axis, while the connecting element is articulated on the one hand to the pivot lever and on the other hand on the swash plate to move over the control cam the latch bolt.

In addition, the lock may have a separate from the latch latch key-operated lock bolt.

Particular advantages of the invention are achieved by the special design of the swash plate with the control curve, which fulfills different functions. The swivel disk can be designed in the form of an elongate, one-armed pivoting lever which has a bearing area and a control area remote from the bearing area. The bearing area is rotatably supported about an axis parallel to the axis of the nut and connected via further elements of the transmission device, in particular the connecting element and the driving plate, with the nut, so that the swash plate is pivoted upon rotation of the nut. The control section comprises the control cam and is connected to the latch bolt. By a biasing device, the swash plate is biased against the latch assembly in the sense of a disengagement of the same.

In one embodiment of the invention, the control cam is formed by a slot formed in the swashplate, which has a first hole section which forms the first section of the control cam and a second hole section which is connected to the first hole section and forms the second section of the control curve. In this case, in all positions of the latch bolt, the first hole section is aligned in its longitudinal extension at an obtuse angle with respect to the longitudinal axis or displacement direction of the latch assembly, while the second hole section has a longitudinal alignment at an acute angle with respect to the longitudinal axis or displacement direction of the latch assembly , The two hole sections are connected to each other via a kink or a bend. Such a trained slot provides the two functions of the pivot plate according to the invention, namely the lock in the fully disengaged position of the latch bolt to prevent tampering, and the possibility of hand or key operation to move the trap assembly and open the lock, sure.

In an advantageous embodiment, the first portion of the through-hole defining the cam is bounded by relatively short parallel first wall portions substantially perpendicular to a radius line extending from the pivot axis of the swashplate and intersecting any point of these first wall portions. With an external force acting on the latch bolt in the fully disengaged position, the engagement means bears against one of these first wall portions so that the force is received substantially radially with respect to the pivot axis of the swashplate. In the circumferential direction with respect to the pivot axis of the swash plate, no or only a small force whose torque is insufficient to pivot the swash plate acts. The second hole portion is preferably bounded by elongate parallel second wall portions which extend at an angle other than 90 ° with respect to a radius line extending from the pivot axis of the swashplate and intersecting any point on the second wall portions so as to engage the nut manually or upon key operation of a key cylinder, enabling transmission of a force component parallel to the direction of displacement of the latch assembly sufficient to displace the latch latch.

Incidentally, the lock according to the invention may alternatively or additionally comprise one or more of the following details: it may have a key-operated lock cylinder which is coupled to the latch bolt arrangement via a further gear mechanism in such a way that it can be displaced by key operation to open the lock. The further transmission device can, for example, a sliding element coupled to the lock cylinder, which is displaceably arranged substantially transversely to the latch bolt arrangement, a pivot lever which is pivotally mounted about an axis parallel to a pivot axis of the swash plate, a movable connecting element, on the one hand with the pivot lever and on the other hand connected to the swash plate, and having the swash plate. The lock may further comprise a key-operated lock bolt separate from the latch bolt.

• Fig. 1 ein erfindungsgemäßes Einsteckschloss in einer Seitenansicht bei geöffnetem Gehäuse und mit nur teilweise aus dem Schlossstulp herausragendem Fallenriegel;
• Fig. 2 eine Draufsicht auf die Rückseite des Gehäuses des erfindungsgemäßen Schlosses nach Figur 1;
• Fig. 3 das Einsteckschloss nach Figur 2 in einer ausschnittsweisen Schnittdarstellung gemäß der Linie III-III nach Figur 1;
• Fig. 4 eine der Figur 1 entsprechende Ansicht des erfindungsgemäßen Schlosses, wobei sich der Fallenriegel in einer vollständig ausgerückten Stellung befindet;
• Fig. 5 eine der Figur 1 entsprechende Ansicht des erfindungsgemäßen Schlosses, wobei sich der Fallenriegel in einer vollständig eingezogenen Stellung befindet; und
• Fig. 6 eine Perspektivansicht einer in dem erfindungsgemäßen Schloss verwendeten Schwenkscheibe in einer stark vergrößerten schematisierten Darstellung.

Further details of advantageous embodiments of the invention will become apparent from the drawings, the description or subclaims. In the drawing, for illustrative purposes, embodiments of the invention are illustrated which in no way limit these. Show it:

• Fig. 1 an inventive mortise lock in a side view with the housing open and with only partially protruding from the lock cuff latch bolt;
• Fig. 2 a plan view of the back of the housing of the lock according to the invention FIG. 1 ;
• Fig. 3 the mortise lock after FIG. 2 in a sectional sectional view along the line III-III according to FIG. 1 ;
• Fig. 4 one of the FIG. 1 corresponding view of the lock according to the invention, wherein the latch bolt is in a fully disengaged position;
• Fig. 5 one of the FIG. 1 corresponding view of the lock according to the invention, wherein the latch bolt is in a fully retracted position; and
• Fig. 6 a perspective view of a swash plate used in the lock according to the invention in a greatly enlarged schematic representation.

In FIG. 1 a detail of a lock 1 is illustrated, which is particularly suitable for installation in panic doors, fire doors and hotel room doors but also for house doors, apartment doors, closet doors or similar applications. The lock 1 has a housing 2, which has a housing bottom 3, a housing cover 4, which in FIG. 1 taken off and off FIG. 3 can be seen, as well as a cuff 6, which is arranged on one side of the housing 2 between the bottom 3 and the lid 4. The forend 6 is provided with a plurality of passage openings. These include a passage opening 7 for an optional existing, shown here only schematically illustrated latch 8 and an opening 9, which is penetrated by a latch bolt 11. The latch bolt 11 belongs to a latch bolt arrangement 12 which is mounted so as to be displaceable linearly in the housing 2 in a direction 13 which substantially corresponds to the longitudinal alignment of the latch bolt 11 and is perpendicular to the forend 6. In use, the displacement direction 13 is in a horizontal plane. To guide the latch bolt arrangement 12, a sliding guide 14 is provided, which here has an elongated groove or passage opening 16 established in the housing bottom 3 (cf. FIGS. 2 and 3 ).

The latch bolt 11 of the Fallenriegelanördnung 12 has at its front end projecting through the forend 6 on a latch bolt head 17 which is conventionally formed with a locking surface 18 and an inclined ramp surface 19, which when closing a door leaf with a posted on a window frame strike plate 21, which has a strike plate opening 22, cooperates to the latch bolt 11 against the action of a biasing spring 23 into the lock into the in Fig. 5 illustrated position. The biasing spring 23 is configured to urge the latch latch 11 to its disengaged position.

To the latch bolt assembly 12 also includes a latch bolt carrier 24 which is formed here by a integrally formed on the inner end of the latch bolt 11 shank. The free inner end of the latch bolt carrier 24 carries a transversely disposed between the housing bottom 3 and the housing cover 4 bolts 26, one end of which is guided in the groove 16 in the direction 13 slidably. The other end of the bolt 26 carries a rolling body 27 which is formed here by a roller or roller and is rotatably mounted on the bolt 26. The bolt 26 with the rolling body 27 cooperates as a power transmission means with a pivot plate 28 explained in more detail below to implement a pivotal movement of the swash plate 28 about its pivot axis 29 in a linear movement of the latch bolt 11 and vice versa. The latch bolt 11 biasing spring 23 is wound around the pivot axis 29 and is supported at one end to a housing-fixed pin 31 and with its other end against a fixed to the swash plate 28 pin 32 so that they pivot plate 28 against the latch bolt 11th tries to suppress in the sense of its release.

To lock the sliding movement of the latch bolt 11 in his in FIG. 1 illustrated partially disengaged intermediate position, which corresponds to the door open position and protrudes in the latch bolt head 17 by the partial stroke h beyond the forend 6, a locking device 33 is provided, to which in the embodiment illustrated here, a one-armed, substantially L-shaped locking lever 34 belongs. The locking lever 34 is pivotally mounted at one end to the housing 2 about an axis 36 which is transverse to the displacement direction 13 of the latch bolt 11, substantially perpendicular to the housing bottom 3 and housing cover 4 and parallel to the pivot axis 29 of the swash plate 28 runs. It extends from the axis 36 upwards and is then bent to extend in the direction of the cuff 6 on the latch bolt carrier 24 to the latch bolt head 17. At its free end, the locking lever 34 carries a latching lug 37 which faces the latch bolt head 17 and retracts in the intermediate position of the latch bolt 11 FIG. 1 engages behind a projection 38 formed on the latch bolt head 17 in order to lock it. The locking lever 34 is biased by a spring means 35 on the latch bolt 11 out.

In approximately in the middle of the locking lug 37 having L-leg of the locking lever 34 has a projecting in the direction of the latch bolt 11 control surface 39 is formed, which belongs to a trigger mechanism 41, which serves to lift the lock of the locking device 33. The triggering mechanism 41 includes a trigger member 42 having an elongate latch-shaped slider 43 and a control lug 44 formed on the end of the slider 43. The slider 43 is slidably received in a formed in the locking surface 18 of the latch bolt head 17 longitudinal groove 46 and an aligned in the housing bottom 3 to the longitudinal groove 46 longitudinal opening 47, which form parallel sliding guides 13. The longitudinal groove 46 terminates at a slight distance from an outer edge 48 of the latch bolt head 17, which connects the ramp surface 19 with the blocking surface 18, so that the aligned parallel to the face plate 6, outwardly facing end face 49 of the slider 43 relative to the outer edge 48 in the direction de castle interior is set back.

The control nose 44 is formed at the inner end of the slider 43 so as to project toward the lock lever 34 to cooperate with the control surface 39. Against the control nose 44 is based one end of a Compression spring 51 from whose other end is supported on a housing-fixed part 52. The compression spring biases the trigger element 42 in the direction 13 out of the housing 2 to the outside. The compression spring 51 is wound around a telescoping device 52, to which a receiving tube 54 fixed to the housing part 52 and a shaft 56 slidably received in the latter belong, which are aligned in the direction of the forend 6. Upon a displacement of the triggering element 42, the shaft 56 is slidably guided in the interior of the receiving tube 54 with low backlash.

In order to open the lock as needed, an actuator 57 is provided. In the exemplary embodiment presented, this comprises a manual actuation device 58, which has a nut 59 rotatably mounted in the housing 2 with, for example, a four-edged insertion opening 60 for a door handle. The nut 59 is under the action of a spring 61, which tends to pivot the nut 59 via a formed on the nut 59 radial arm 62 against a stop 63. The nut 59 communicates with a first gear means 66 via a dog lug 64 disposed between the pusher 59 and the latch bolt 11 to translate rotational movement of the nut 59 into reciprocal movement of the latch bolt assembly.

To the transmission device 66 includes a rotatably coupled to the nut 59 driving plate 67, a connecting element 68 which connects the driving plate 67 with the above-mentioned Schenkscheibe 28 and the swash plate 28. The driving plate 67 is pivotally mounted about the axis of the nut 59 and carries Driving element 69 which is positively connected to the driving lug 64 of the nut 59. In the embodiment illustrated here, a movable coupling element is in the form of a pin 70 provided to selectively bring the driving element 69 with the driving lug 64 in engagement or disengagement. The driving lug 64, the driving element 69 and the coupling element thus form a coupling device 71 which is able to produce or interrupt the form-fitting drive connection between the nut 59 and the gear device 66.

For clutch actuation, a clutch actuation device 72 is provided, to which substantially an electric motor 73 and a clutch actuation element 74 belong. The clutch actuating element 74 is coupled to a drive shaft of the electric motor 73 in such a way that, depending on the direction of rotation of the electric motor 73, the coupling element 70 is displaced against the nut 59 between the driving lug 64 and the driving element 69 in order to positively connect them to each other, or can be moved away from the coupling element 70, so that it shifts away from the nut 59 under the action of its gravity and interrupts the coupling connection.

There may be two such pairs of couplings on both axial sides of the nut 59 and the follower plate 67, and the clutch actuator 72 may be adapted to provide one of the coupling connections or both coupling connections to the door either from inside, from outside or from both sides to open.

The driving plate 67 carries at a peripheral portion of this a coupling pin 76 which engages in an elongated coupling hole 77 which is formed at one end of the connecting element 68. The other end of the elongated, flat connecting element 68 is hinged to the pivot plate 28 attached to the pin 32 so that it to This can be rotated around with respect to the swash plate 28, but otherwise moved in other directions together with the swash plate 28. The pin 32 is arranged parallel and at a small distance from the pivot axis 29 of the swash plate 28. The connecting element 68 is in the FIGS. 1 and 5 for illustrative purposes over the Mitnamescheibe 67 and the swash plate 28 lying while it in FIG. 4 is arranged under this, in order to make other elements, in particular also the swash plate 28 recognizable.

In Fig. 6 is the swash plate 28 according to the invention illustrated in a schematic perspective view on an enlarged scale. The swash plate 28 is in the form of an elongated flat one-armed pivot lever having at one end a bearing portion 78 having a first hole 80a for the pivot axis 29 and a second hole 80b located adjacent to the pin 32 and at the other end a control portion 79th having. In the control portion, there is formed a long hole 81 having a shorter first hole portion 82 and a longer second hole portion 83 connected thereto and aligned at an angle different from 180 ° with respect to the first hole portion 82. In particular, the first hole portion 82 is disposed in all positions of the latch bolt 11 at an acute angle with respect to the displacement direction 13, while the second hole portion 83 with the direction 13 always includes an obtuse angle, see. eg Fig. 1 . 4 and 5 , Both hole sections 82, 83 are connected to one another via a bending or bending point 84 in order to form a continuous slot 81.

In the slot 81, as can be seen from the figures, the engagement bolt 26 is received with the rolling body 27, so that the swash plate 28 engages over the slot 81 in all positions of the latch bolt 11 directly on this. The slot 81 is specially designed to allow in interaction with the engaging means 26, 27 of the latch bolt 11 depending on the position of the latch bolt different functions: When the engagement means 26, 27 is in the first hole portion 82, this prevents the Fallen bolt 11 is inserted as a result of acting on these from the outside force in the lock housing 2, wherein a handle operation is still possible. In the second hole portion 83, the engaging means 26, 27 cooperates therewith to allow a displacement of the latch bolt 11 together with a pivoting of the swash plate 28 both in an externally acting on the latch bolt 11 and force on the handle operation.

In order to make this possible, the wall regions 86a, 86b of the first hole section 82 and 87a, 87b of the second hole section 83 delimiting the oblong hole 81 jointly define a suitable control cam 88. The wall sections 86a, 86b of the first hole section 82 are substantially parallel to one another and are in the FIG Aligned substantially perpendicular to an imaginary radius line not shown here, which extends through the pivot axis 29 of the swash plate 28. The wall portions 87a, 87b of the second hole portion 83 are also parallel to each other, but are oriented at any point of their longitudinal extension at an angle other than 90 °, which is preferably at least 145 ° and less than 180 ° with respect to an imaginary radius line passing through the respective point of the wall portions 87a, 87b and passes through the pivot axis 29. The vertical distance between the wall portions 86a and 86 or 87a and 87b is preferably selected such that the rolling body 27 therebetween is received with little play, but can roll unimpaired on the control cam 88.

The lock 1 described so far operates as follows:

At rest, the castle is 1 in the in FIG. 1 shown operating position in which the latch bolt assembly is in a partially disengaged intermediate position and the latch bolt head 17 protrudes to the partial stroke h from the forend 6 out. This operating position corresponds to the door open position with respect to the frame open door 89, as in FIG. 3 illustrated. The locking lug 37 of the locking lever 34 is biased by the spring means 35 on the latch bolt head 17 and engages behind the projection 38, whereby the locking device 33 is prevented from acting under the action of the latch bolt spring 23 from the in FIG. 1 shown intermediate position in the fully disengaged end position according to FIG. 4 extend. In the intermediate position after FIG. 1 the engagement bolt 26 is arranged with the rolling body 27 in the second hole portion 83. The control cam 88 and the rolling body 27 thus do not prevent a shift of the latch bolt 11 into the lock.

If the door is closed, initially the inclined ramp surface 19 comes into engagement with the striking plate 21 which is hinged on the frame side. The striking plate 21 presses the latch bolt head 17 over the ramp 19 into the lock housing. About the latch bolt carrier 24, the rolling body 27 is pressed against the wall portion 87 a, wherein he causes a result of a thereby initiated on the swash plate 28 torque simultaneously pivoting the swash plate 28. At this time, the rolling body 29 rolls along the wall portion 87a until he reaches approximately the upper hole end of the second hole portion 83. The latch bolt is at the same time completely or almost completely inserted into the lock housing 2, until he the in FIG. 5 illustrated fully engaged position reached. In the pivoting movement of the swash plate 28, although the hingedly connected to this connecting element 68 is slightly shifted. However, the elongated coupling hole 77 of the connecting element 68 slides past the coupling pin 76, so that no movement on the driving plate 67 and the nut 59 is transmitted.

In the shift from the intermediate position according to FIG. 1 in the fully engaged position according to FIG. 5 Together with the latch bolt head and the trigger element 42 of the trigger mechanism 41 is moved against the action of the compression spring 51 to the housing part 52 towards. When the control lug 44 reaches the control surface 39, the locking lever 34 is lifted against the action of the spring means 35 of the latch bolt head 17, so that the locking is canceled by the locking device 33.

After the latch bolt head 17 has passed the strike plate 21 and aligned with the strike plate opening 22, he snaps into this under the action of the latch bolt spring 23 a. More specifically, the swash plate 28 is pivoted by the latch bolt spring 23 about the pivot axis 29 in the figures clockwise to the latch bolt head 17, wherein the rolling body 27 along the wall portion 87 a to the kink 84 and then over the wall portion 86 a of the first hole section rolls to the lower end of the slot 81. About the engaging pin 26 thus the latch bolt head 17 from the lock housing 2 to the outside in the in FIG. 4 illustrated fully disengaged position in which he projects to the full stroke H from the forend 6.

While the latch bolt head 17 retracts into the strike plate opening 22, the slide 43 is still held by the strike plate 21 in the retracted position in the lock housing 2, in which the control nose 44 acts on the control surface 39, as shown in FIG FIG. 4 is illustrated. The locking device 33 thus does not prevent the latch bolt assembly 12 at an extension movement.

In the fully extended position of the latch bolt 11, the door is closed and the latch bolt assembly 12 is locked. In particular, the latch bolt head 17 can not be pushed back into the lock by an external force, for example by inserting a specially designed tool between the door leaf and the frame. Such retraction is prevented by the engagement bolt 26 with the rolling body 27 and the first hole portion 82, which together form a further locking device 91. When a force acting on the latch bolt from the outside, in the lock housing 2 inwardly directed force, the rolling body 27 is pressed against the wall portion 86 a of the first hole portion 82, so that this force is absorbed by the swash plate 28 substantially radially with respect to the pivot axis 29 becomes. It thus acts no torque on the swash plate 28, which would be enough to give away this. In an external force acting on the latch bolt 11 outwardly, the rolling body 27 is supported on the wall portion 86b of the first hole portion 82, so that the swash plate 28 in turn receives a radial, now inwardly directed force with respect to the pivot axis 29. In any case, in turn, no torque is transmitted from the latch bolt 11 on the swash plate 28. Thus, even a shaking movement of a possibly used burglary tool can not cause that through the second locking device 91 created locking is canceled.

However, the lock can be opened manually by means of the manual actuator 58. In a handle operation, the driving plate 67 is rotated together with the nut 59 in the figures counterclockwise via the coupling device 71, the driving plate 67 via the coupling pin 76 and walls of the coupling hole 77, the connecting element 68 moves approximately in the longitudinal direction. As a result, the connecting element 68 causes a restriction of the swash plate 28 via the pin 32. A pivoting movement of the Schenkscheibe 28 is not hindered in the normal state, without the action of an external force, by the pin 26 and rolling body 27. The rolling body slides or rolls on the wall portion 86b of the first hole portion 83 until it reaches the kink point 84. In a further handle operation and pivoting of the swash plate 28 of the rolling body 27 rolls on the wall portion 87b of the second hole portion 82 and is pressed by this in the direction 13 inward. The latch bolt 11 can from the fully disengaged position according to FIG. 4 in the fully engaged position according to FIG. 5 be inserted to open the lock and the door.

The lock 1 according to the invention has a particularly simple, robust and safe construction. This is primarily due to the design of the swash plate 28 with the cam 88, which fulfills the different functions of a transmission element or a locking device 91 under different operating conditions. A separate locking lever with associated spring means and bearing means and rods as in the prior art is avoided here by providing a single element 28. The lock 1 is in the closed state hard to manipulate. When the door is open, a false lock by accidental release of the trigger mechanism 41 is effectively avoided. This is particularly because the slider is largely protected in the latch bolt head 17, is set back relative to its outer edge 48 and is mounted displaceably thereon. It can hardly be accidentally pressed with the door open in such a way that the barrier formed by the first locking device 33 is released. In addition, the slider 43 is suitably arranged on the locking surface 18, which optionally a door rebate 92 (see. FIG. 3 ), so that it is hardly possible to intervene in the gap formed therebetween to displace the slider 43 sufficiently to effect locking of the latch bolt assembly 12 with the door open.

Numerous modifications are possible within the scope of the invention. Thus, for example, instead of a pusher also another handle, e.g. a knob, be provided for actuating the lock. It can also be created an electronically operated lock. Furthermore, the transmission device can be designed differently if it uses the pivot plate 28 configured according to the invention. The first locking device 33 can also be realized in a different form, for example by a slider acting on the latch bolt 11. In principle, other shapes of the cam 88 in the swash plate 28 are possible, which also fulfill the specified functions.

In addition, the castle can. 1 be set up for key operation. For this purpose, the lock 1, as in the FIGS. 1 . 4 and 5 illustrated, a lock cylinder 93 which is coupled via a further gear mechanism 94 with the latch bolt assembly 12 to match the latch bolt 11 from its fully disengaged To transfer locking position in the fully engaged position. In the in Fig. 4 illustrated embodiment, the lock cylinder 93 is coupled to a slider element 96 which is transversely, in use vertically upwards and downwards to the latch bolt assembly 12 slidably disposed and with its upper end to a substantially L-shaped pivot lever 97 approximately at the junction between the two L-legs of the pivot lever 97 is articulated. The pivot lever 97 is pivoted at one end about an axis parallel to the pivot axis 29 axis 98 and hinged via an opening provided on the other leg L-shaped elongated opening 99 on a pin 101 which is fixed to the connecting element 68 approximately in the middle.

By actuation of a key, a lock bit, not illustrated in more detail here, acts on the slide element 96 in such a way that it is displaced upward, as a result of which the swivel lever 97 moves inwards FIG. 4 is pivoted counterclockwise and the connecting element 68 entrains, whereby the swash plate 28 is pivoted about the pivot axis 29 counterclockwise. As a result, the latch bolt 11 is pulled into the lock 2. Advantageously, even with key operation, the connecting element 68 and the swash plate 28 are effective, so that the number of components is further reduced.

A lock, in particular for hotel doors, panic doors or the like., Has a sliding, spring-loaded latch bolt 11 with a latch bolt head 17, the door open in a partially disengaged intermediate position, with the door closed in a fully disengaged locking position and when opening in a fully engaged position can be converted, a first locking device 33 for locking the latch bolt 11th in its intermediate position, a trigger mechanism for releasing the first locking device, a second locking means 91 for locking the latch bolt 11 in its fully disengaged position and an actuator 57 for transferring the latch bolt 11 in its fully engaged position. According to the invention, the triggering mechanism on a triggering element 42 which is housed protected in the locking surface 18 of the latch bolt head 17 and slidably mounted. Furthermore, the second locking device 91 and the actuating device 57 use a common swivel plate 28, which has a control cam 88, via which the swash plate 28 engages in all positions of the latch bolt 11 directly on this. The cam 88 has a first portion 82 which prevents the latch bolt 11 in its fully disengaged position from being forcibly pressed in, and a second portion 83 which allows the latch bolt 11 to be displaced. The lock 1 has a simple construction with a reduced number of parts. The security against manipulation and against accidental or intentional locking of the lock with the door open is increased.

Claims (15)

1. Lock, in particular for doors, with a housing (2); with a drop latch arrangement (12), which is arranged in the housing (2) and has a displaceably mounted and spring-loaded drop latch (11) with a drop latch head (17), wherein the drop latch (11) is movable into a fully engaged position, in which the drop latch head (17) is received in the housing (2) to the greatest distance, a fully disengaged position, in which the drop latch head (17) projects out of the housing to the greatest distance, and into a partially disengaged intermediate position; with a first locking device (33) for blocking the drop latch (11) in its partially disengaged intermediate position to prevent further disengagement of the drop latch (11); with a release mechanism (41), which serves to release a disengagement of the drop latch (11) into its fully disengaged position, and which has a release element (42), which is displaceably arranged in the drop latch head (17) to release the first locking device (33); with a second locking device (91) for blocking the drop latch (11) in its fully disengaged position to prevent displacement of the drop latch (11); and with an actuation device (57) for moving the drop latch (17) into its fully engaged position; wherein the second locking device (91) and the actuation device (57) have a common swivel disc (28) with a cam (88), which acts directly on the drop latch (11) in all positions thereof; wherein the cam (88) has a first section (82), which is active in the fully disengaged position of the drop latch (11) to prevent displacement of the drop latch (11) by means of a force acting on the drop latch head (17) from the outside, and a second section (83), which is active between the partially engaged intermediate position and the fully engaged position of the drop latch (11) to allow displacement of the drop latch by pivoting of the swivel disc (28).
2. Lock according to claim 1, characterised in that the drop latch (11) has a drop latch support (24), which is connected to the drop latch head (17) and which is displaceably guided in the housing (2) and bears an engaging element (26, 27), which stands in engagement with the cam (88) of the swivel disc (28).
3. Lock according to claim 2, characterised in that the engaging element has a bolt (26) fastened to the drop latch support (24) and a rolling body (26), which is rotatably mounted on the bolt and rolls on the cam (88).
4. Lock according to claim 1, characterised in that the first locking device (33) has a pivoting and spring-loaded locking lever (34) with a locking lug (37) to engage behind a projection (38) of the drop latch (11) in order to block this in the intermediate position, and a control surface (39), with which a control lug (44) of the release element (42) interacts in order to release the blocking action.
5. Lock according to claim 1, characterised in that the release element (42) has an elongated substantially bar-shaped slide (43), which is guided in a longitudinally displaceable manner in horizontal recesses (46, 47) of the drop latch head (17) and the housing (2).
6. Lock according to claim 5, characterised in that the recess (46) is arranged in a rear side (18) of the drop latch head (17) located opposite the drop latch slope (19) and terminates in the direct vicinity of the outer edge (48) of the drop latch head at a distance therefrom.
7. Lock according to claim 1, characterised in that the release element (42) is biased outwards in the direction of the drop latch head (17) by a spring element (51), wherein the spring element (51) preferably surrounds a telescopic device (53), which has a receiving tube (54), which is secured to the housing and is arranged parallel to a displacing direction (13) of the drop latch arrangement (12), and a shaft (56), which is displaceably received in the receiving tube (54) and is connected to the release element (42).
8. Lock according to claim 1, characterised in that the actuation device (57) has a device (58) for manually actuating the drop latch arrangement (12), which has a rotatably mounted nut (59), which is arranged for attachment of a sneck and which has an associated spring element (61) acting against its rotation in one direction.
9. Lock according to claim 8, characterised in that the manual actuation device (58) has a gear arrangement (66) for converting a rotation movement of the nut (59) into a reciprocating movement of the drop latch arrangement (12), wherein the gear arrangement (66) preferably has a driving disc (67), which can be positively connected to the nut (59) by a coupling device (71) to be fixed against rotation, and a connection element (68), which is coupled to the driving disc (67) and to the swivel disc (28).
10. Lock according to claim 9, characterised in that the coupling device (71) has a positive-locking coupling member (64) moulded on the nut (59) and at least one positive-locking coupling member (69) fastened to the driving disc (67), and that the coupling device (71) has an associated electric motor (73), which by means of a coupling actuation element (75) acts on a coupling element (70), which creates or interrupts a positive-locking connection between the two coupling members (64, 69).
11. Lock according to claim 8, characterised in that the swivel disc (28) is configured in the form of an elongated single-arm swivel lever, which has a bearing section (78), which is rotatably mounted around a swivel axis (29) parallel to the axis of the nut and is coupled to the nut (59) in such a manner that the swivel disc can be pivoted around the swivel axis (29) upon a rotation of the nut (59), and a control section (79), which is spaced from the bearing section (78) and which bears the cam (88) and is connected to the drop latch (11).
12. Lock according to claim 1, characterised in that the swivel disc (28) is biased against the drop latch arrangement (12) in the sense of a disengagement thereof by a biasing device (23, 31, 32).
13. Lock according to claim 1, characterised in that the cam (88) is defined by an elongated hole (81), which is configured in the swivel disc (28) and has a first hole section (82), which defines the first section of the cam (88), and a second hole section (83), which defines the second section of the cam (88).
14. Lock according to claim 13, characterised in that in all positions of the drop latch (11) the first hole section (82) is oriented in its longitudinal extent at an obtuse angle in relation to a displacing direction (13) of the drop latch arrangement (12), whereas the second hole section (83) has a longitudinal orientation at an acute angle in relation to the displacing direction (13), and that the two hole sections (82, 83) are connected to one another by means of a bend (84).
15. Lock according to claim 13, characterised in that the first hole section (82) is delimited by parallel first wall regions (86a, 86b), which run substantially perpendicularly to a radius line, which extends from a swivel axis (29) of the swivel disc (28), whereas the second hole section (83) is delimited by elongated parallel second wall regions (87a, 87b), which run at an angle other than 90° in relation to a radius line, which extends from a swivel axis (29) of the swivel disc (28).

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