EP2990570A1 - Lock striker plate and lock, comprising such a lock striker plate - Google Patents

Abstract

The invention relates to a lock latch (2) for a door, comprising a latch body (3), a latch shaft (4), and an actuating element (5), wherein the latch shaft (4) is connected to the latch body (3) or formed in one piece, wherein the actuating element (5) is displaceably arranged on the latch shaft (4), and wherein with the actuating element (5) a switching device (6) can be actuated.

Description

The present invention relates to a latch for a door. Furthermore, the invention relates to a lock comprising such a latch.

Lock traps are known from the prior art. In this case, the prior art also known additional traps that are only used to indicate a state of the door. For example, it is important for security doors to be able to retrieve the exact state of the door at any time, that is, whether the door is in an open or in a closed state. For this purpose, additional traps are used, with such an additional trap exemplified in FIG. 1 is shown.

FIG. 1 shows a lock for a door according to the prior art. The lock 1 comprises a lock body 8, in which a switching device 6 is arranged. The switching device 6 is actuated by a latch 2, the latch 2 having a latch body 3 and a rigid latch shaft 4. Is the door in which such a lock 1 is arranged, in an open state, the switching device 6 is not actuated by the latch shaft 4. However, if the door comprising the lock 1 is closed, the latch body 3 is pressed by a strike plate into the interior of the lock body 8, as a result of which the latch shaft 4 is also displaced in the direction of the switching device 6. In this way, the switching device 6 is actuated. By querying the switching state of the switching device 6 is thus determined at any time, whether the door is in a closed or in an open condition.

In order to take account of different spine sizes, different traps 4 are provided. In order to compensate for manufacturing tolerances, the switching device 6 is adjustable. In most cases, the switching device 6 is a micro-switch, which has a switching lug 11. The switching lug 11 can be readjusted by hand, so that the switching device 6 reliably displays the current state of the door. Thus, the only adjustment, especially the only way to compensate for manufacturing tolerances, the readjustment of the switching flag eleventh

However, a readjustment by hand of the switch lug 11 is very time consuming. In most cases, the lock body 8 is open to readjust the switching lug 11 and then close the lock body 8 again. In addition to this complex process there is still the danger that the switching lug 11 is destroyed, whereby a new switching device 6 must be installed.

It is therefore an object of the invention to provide a latch, which allows for simple and cost-effective production and installation a secure and reliable display of a door condition, the latch is universally applicable.

The solution of this object is achieved by the features of claim 1. Thus, the solution of the problem is carried out by a latch for a door that includes a latch body, a latch shaft and an actuator. The case body preferably has a case slope, wherein the trap body of a strike plate of a door frame is displaceable by the case slope. The trap shaft is with the trap body connected or integrally formed. In turn, the actuating element is displaceably arranged on the latch shaft. With the actuating element, a switching device is actuated. Due to the displaceable arrangement of the actuating element on the latch shaft is advantageously provided that the actuating element is adjustable. Thus, different distances between case shaft and switching device can be compensated by the actuating element. In particular, in the case in which a condition of the door is to be checked with the latch, thus a compensation of tolerances is possible. In this case, the lock latch installed in a lock can be adjusted by displacing the operating member relative to the latch shaft, so that the switching device is actuated by the actuator by movement of the latch body.

The dependent claims have advantageous developments of the invention to the content.

It is preferably provided that a locking element is arranged on the latch shaft. With the locking element, the actuating element can be detected on the latch shaft. This ensures that the adjusted lock latch is not subsequently adjusted.

Particularly advantageously, the locking element is a screw, in particular a grub screw. The screw is advantageously arranged in a thread of the trap shaft. Thus, the actuator is very easy to detect and very easily solved, whereby an adjustment of the latch can be performed very easily and with little effort.

The latch is preferably designed such that the actuating element is a latch pin. The latch pin is arranged in a bore of the latch shaft and preferably displaceable within this bore. Alternatively, it is preferably provided that the latch pin has a thread that can be screwed into a counter-thread of the latch shaft. In addition, the fixing element is particularly advantageous, as already described above, a grub screw which is arranged in a thread perpendicular to the bore of the trap shaft.

The invention further relates to a lock for a door. The lock comprises a lock body and a lock catch described above. The lock body can be used in a door leaf of the door. By the adjustability of the actuating element of the latch described above a tolerance compensation is possible. Therefore, it is ensured that the actuator reliably actuates the switching device. As a further advantage, the latch is suitable for use in locks with different mandrel dimensions.

In a preferred embodiment, the latch body is arranged outside the lock body and is at least partially displaceable into the lock body. In particular, such a displacement takes place in the lock body by the concerns of the case slope on a strike plate. This ensures the functionality of a trap.

In addition, it is particularly preferably provided that a switching device is attached to the lock body. The switching device is in particular a microswitch. It is further provided that the switching device is then actuated by the actuating element, if the case body at least partially moved into the lock body. Thus, with the switching device, a state of the door can be displayed. If the case body is displaced into the lock body, this indicates that a strike plate has displaced the latch body into the lock body due to the fall slope. In this case, the actuator actuates the switching device. If, on the other hand, the latch body is arranged outside the lock body, this indicates that a strike plate has not moved the latch body into the lock body, ie the door does not bear against the strike plate. In this case, the switching device is not actuated by the actuating element. A query of the switching device thus allows a conclusion to a state of the door.

On the lock body is advantageously arranged a bearing element. The bearing element is provided in particular for mounting the actuating element. In this case, the actuating element is displaceably mounted on the bearing element. Particularly advantageously, the bearing element is arranged directly on the switching device. Thus, it is ensured by the bearing element that the actuating element actuates the switching device.

Preferably, a spring, in particular a spiral spring, is arranged between the latch shaft and the bearing element. The spring is preferably supported on the latch shaft and on the bearing element. The spring generates a force that pushes out the case body from the lock body. Thus, the case body is hineinschiebbar against the pressure of the spring in the lock body.

Particularly preferably, it is provided that the spring surrounds the actuating element. It is provided in particular that the actuating element is a latch pin. The trap pin is preferred by the Surrounded by a spring formed as a spiral spring. In this way, the latch pin or the actuator additionally serves as a guide for the spring.

It can be seen that from the adjustability of the actuating element relative to the latch shaft, a safe and reliable operation of the switching device can be achieved by the actuating element. Thus, with the lock in particular a safe and reliable query about a current state of the door is possible. Therefore, the lock is preferably suitable for security doors. It is advantageous that even for a large series of locks only a single case shaft must be made. Both a tolerance compensation and an adjustment to different mandrel dimensions is done exclusively by the actuator. Thus, it is avoided that a plurality of different latch shafts must be provided to realize different locks.

Fig. 1

eine schematische Darstellung eines Schlosses für eine Tür gemäß dem Stand der Technik, und

Fig. 2

eine schematische Darstellung eines Schlosses für eine Tür gemäß einem Ausführungsbeispiel der Erfindung.

The invention will now be described in detail by means of embodiments with reference to the accompanying drawings. In the drawings:

Fig. 1

a schematic representation of a lock for a door according to the prior art, and

Fig. 2

a schematic representation of a lock for a door according to an embodiment of the invention.

Fig. 2 shows a latch 2, which is arranged in a lock according to an embodiment of the invention. The lock is in particular a mortise lock and can be inserted into a door leaf. The latch 2 is in particular an additional trap that in a closed state of the door is pressed by a lock plate, not shown in a lock body 8 of the lock 1. With an additional case, the door can not be locked, but it should only be determined a state of the door. Preferably should be determined with the additional trap, if the door is closed.

If the door is not closed, then a latch body 3 of the latch 2 is arranged outside the lock body 8. The case body 3 has a case slope, so that the case body 3 is movable by the strike plate. In particular, the latch body 3 is at least partially displaceable into the lock body 8 by the strike plate.

The trap body 3 has a trap head (not shown). The case head is either movable or rigid. A movable design of the case head allows the use of the lock latch 2 regardless of the closing direction of the door. A rigid case head comprises in particular only the case slope and is therefore dependent on the closing direction of the door.

The case body 3 is connected to a latch shaft 4 or formed integrally therewith. The latch shaft 4 is located completely inside the lock body 8 and serves to transmit the movement of the latch body 3 to an actuating element 5. The actuating element 5 is a latch pin which is arranged in a bore of the latch shaft 4. Thus, the actuating element 5 is displaceable relative to the latch shaft 4, since the latch pin is displaceable within the bore. To lock the actuating element 5, the latch 2 has a locking element 7. The locking element 7 is in particular a grub screw. The grub screw is arranged in a thread of the latch shaft 4, wherein the thread is oriented perpendicular to the bore of the latch shaft 4, as the latch pin trained actuator 5 receives. Thus, the trap pin is clamped by the grub screw within the bore. The formation of the locking device as a grub screw is only one possible embodiment. Other embodiments of the locking device, in particular a positive or cohesive locking device are also possible.

The actuator 5 is also slidably mounted in a bearing element 9, wherein the bearing element 9 is fixed to the lock body 8. Overall, therefore, a displacement of the case body 3 is transmitted via the latch shaft 4 to the actuating element 5, so that the actuating element 5 can actuate a switching device 6 within the lock body 8. The switching device 6 is in particular a microswitch. The microswitch has a switching lug 11. It is envisaged that by the switching device 6, a state of the door in which the lock 1 is arranged, is retrievable. Therefore, it is provided that the actuator 5 upon displacement of the case body 3 in the lock body 8 into the switching flag 11 move, thus switching the microswitch and thus the switching device 6 is actuated. If the case body 3 is moved out of the lock body 8 again, the actuating element 5 is released from the switching lug 11, so that the switching device 6 is no longer actuated.

For resetting the case body 3, that is, for moving the case body 3 out of the lock body 8, a spring 10 is provided. The spring 10 is in particular a spiral spring. Furthermore, it is provided that the spring 10 is arranged between the latch shaft 4 and the bearing element 9, is therefore supported both on the bearing element 9 and on the latch shaft 4. For a safe guidance of To ensure spring 10, it is also provided that the spring 10 surrounds the trained as a latch pin actuator 5.

If the case body 3 is displaced into the lock body 8 by the action of an external force, the spring 10 is simultaneously tensioned. After elimination of the external force, the spring 10 urges the case body 3 therefore again out of the lock body 8. At the same time by moving the case body 3 in the lock body 8 into the actuator 5 is moved. In this case, the actuating element 5 can be detected on the latch shaft 4 via the locking element 7 in such a way that the actuating element 5 actuates the switching device 6 in a state in which the latch body 3 is displaced into the lock body 8 at a maximum or at least over a predefined distance. Due to the slidable mounting and the detectability of the actuating element 5 to the latch shaft 4, a tolerance compensation is possible, so that it can be ensured that at a maximum or predefined displacement of the case body 3 in the lock body 8 in a safe and reliable operation of the switching device 6 through the Actuator 5 takes place.

It can be seen that the lock 1 according to the invention and the lock latch 2 according to the invention are very universally applicable. Thus, in particular a tolerance compensation, as described above, by the displaceability of the actuating element 5 relative to the latch shaft 4 is possible. At the same time, by a selection of a predefined length of the actuating element 5, the latch 2 can be adjusted to different mandrel dimensions of the lock 1. This ensures that a reliable and reliable actuation of the switching device 6 takes place by displacing the case body 3 into the lock body 8. Thus, a state of a door in which the lock 1 is arranged, via the switching device 6 is always safe and reliable interrogated. Therefore the lock 1 is advantageously suitable for use with a security door.

LIST OF REFERENCE NUMBERS

1

lock

2

latch

3

case body

4

latch shaft

5

actuator

6

switching device

7

Fixing element

8th

lock body

9

bearing element

10

feather

11

Schaltfahne

Claims (10)

Lock latch (2) for a door, comprising a trap body (3), - a trap shaft (4), and an actuating element (5), - wherein the latch shaft (4) is connected to the latch body (3) or formed in one piece, - Wherein the actuating element (5) is arranged displaceably on the latch shaft (4), and - With the actuating element (5) a switching device (6) can be actuated. Lock latch (2) according to claim 1, characterized in that on the latch shaft (4) a locking element (7) is arranged, wherein the locking element (7), the actuating element (5) on the latch shaft (4) is lockable. Lock latch (2) according to claim 2, characterized in that the locking element (7) is a screw, in particular a grub screw, which is arranged in a thread of the latch shaft (4). Lock latch (2) according to one of the preceding claims, characterized in that the actuating element (5) is a latch pin which is arranged in a bore of the latch shaft (4). Lock (1) for a door, comprising a lock body (8) and a lock catch (2) according to one of the preceding claims, wherein the lock body (8) can be inserted in a door leaf. Lock (1) according to claim 5, characterized in that the latch body (3) outside the lock body (8) is arranged and at least partially in the lock body (8) is slidable. Lock (1) according to claim 6, characterized in that on the lock body (8) a switching device (6), in particular a micro-switch, is mounted, wherein the switching device (6) by the actuating element (5) is actuated when the latch body ( 3) is at least partially displaced into the lock body (8). Lock (1) according to one of claims 5 to 7, characterized in that on the lock body (8) a bearing element (9) is arranged, wherein the actuating element (5) on the bearing element (9) is displaceably mounted. Lock (1) according to claim 8, characterized in that a spring (10), in particular a spiral spring, is arranged between the latch shaft (4) and the bearing element (9), wherein the spring (10) exerts a force on the latch shaft (4 ) exerts, which pushes out the case body (3) from the lock body (8). Lock (1) according to claim 9, characterized in that the spring (10) surrounds the actuating element (5), wherein the actuating element (5) is in particular a latch pin.

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