EP2907944B1 - Lock with a device for safeguarding the lock against manipulation - Google Patents

Description

The present invention relates to a lock with a protective device of the lock against manipulation of the lock, which lock has at least one locking element which can be moved out through an opening in a forend of the lock in a closed position from the lock and moved back into an open position in the castle.

Locks for doors, gates, windows and the like can be manipulated by manipulating the locking mechanism within the lock with a manipulative object. The manipulation object can be inserted through the opening in the forend into the lock, since a gap is formed between the blocking element and the opening. If a spring wire or preferably a spring plate is used as the manipulation object, the non-rebated doors can easily be acted upon by the manipulation object on the reverse slide lock of the blocking element, in particular on the tumbler. If the push-back lock of the blocking element, for example a lock bolt or a lock latch, is released, this can be returned to the opening position of the lock, and a door can be passed without authorization.

The gap between the locking element and the opening is created in particular by the fact that a more or less large clearance between the locking element and the opening is required. The opening in the forend is often used as a guide of the movable locking element, which may for example represent a bolt or a trap. moreover
compensates for the clearance fit manufacturing tolerances of the individual components, whereby the gap can reach a lateral extent of, for example, 0.5 mm.

Against the possibility of manipulation of the locking mechanism within the castle simple locks provide no precautions, so that they are classified in low burglary protection classes. Higher-value locks have locking elements, which are designed geometrically such that the gap between the locking element and the opening can be at least partially covered. For example, a blocking element may have a blocking element shaft with a smaller cross section and a blocking element head with a larger cross section. In the transition between the blocking element shaft and the blocking element head, the blocking element head can have a kind of collar-like molding, which, however, makes the production of the blocking element considerably more difficult.

In particular, it is disadvantageous that the locking elements formed in particular with a manipulation protection have to be manufactured consuming, for example by casting, embossing, forming or the like. The processing of the guide surfaces, which serve to guide the blocking element in the opening of the Stulpes is made more difficult by formations to form a manipulation protection, as they are no longer flat over the entire surface. However, a reworking is usually required, since only so sufficiently smooth and dimensionally accurate guide surfaces on the locking element can be produced. The reworking is used for high quality stainless steel bars at the same time for surface refinement, z. B. by grinding, satin, polish and the like. The interim published WO2010 / 098721 A1 discloses such a blocking element.

EP 2 907 944 A discloses a generic lock.

It is therefore the object of the present invention to provide a lock with a guard against manipulation of the lock
that is easy to manufacture and offers a high level of safety.

This object is achieved on the basis of a lock with a protective device of the lock against manipulation of the lock according to the preamble of claim 1. Advantageous developments of the invention are specified in the dependent claims.

The invention includes the technical teaching that at least one protective element is arranged on the blocking element, so that a gap formed between the blocking element and the opening is covered.

If, according to the invention, a protective element is arranged on the blocking element, then the gap formed between the blocking element and the opening is covered to such an extent that a manipulation object can no longer be introduced into the castle through the gap. If an attempt is made to move a manipulation object through the gap, this abuts against the protective element, and it is impossible to move the manipulation object further into the interior of the lock. The protective element is designed according to the invention as a single component which can be arranged on the blocking element. Consequently, the locking element can be made of simple flat materials, wherein the reworking of the guide surfaces can be done by simple machining operations, since they are flat over the entire surface, since no protrusions to form a tamper protection could interfere with a flat machining.

The blocking element may have a blocking element shaft and a blocking element head, wherein the protective element is arranged in the region of the transition from the blocking element shaft to the blocking element head on the blocking element. The blocking element head forms the part of the blocking element which can protrude from the forend of the lock,
when the blocking element is moved to the closed position. The blocking element shaft forms the part of the blocking element which points in the direction of the inside of the lock and on which the closing mechanism engages in order to initiate the movement between the closing position and the opening position into the blocking element. With particular advantage, the protective element can be arranged at the location on the blocking element, at which the blocking element shaft merges into the blocking element head. This transition point is located approximately at the back of the Stulpes when the blocking element is moved out of the lock in the closed position. Consequently, the protective element is also located on the back of the forend, and access to the inside of the lock through the gap is interrupted immediately behind the forend when the locking element for moving the closed position is moved out of the lock.

The blocking element shaft can have a smaller cross section than the blocking element head and form a blocking element edge in the region of the transition from the blocking element shaft to the blocking element head, the protective element being brought into contact with the blocking element edge from the direction of the blocking element shaft. The cross section of the blocking element may correspond to a rectangular cross section, and the rectangular cross section of the locking element head has larger edge lengths than the edge lengths of the rectangular cross section of the blocking element shaft. This creates a locking element edge with an edge surface which extends transversely to the direction of movement of the blocking element. Against this edge surface, the protective element can be brought to bear.

Advantageously, the protective element at least partially and preferably completely surround the blocking element, so that the gap between the blocking element and the opening is completely covered. Consequently, a manipulation object can not be introduced into the gap between the blocking element and the opening in the forend from either side. In particular, in blocking elements which have a rectangular base cross-section, the protective element may be designed so that the blocking element is completely covered. Special protection achieves a protective element, which is arranged on the side of the blocking element, which points in the direction of a free door gap.

According to a possible advantageous embodiment of the present protective device according to the invention, the protective element can be latched, clipped, screwed, welded, soldered, pressed on and / or molded onto the blocking element by means of plastic injection molding on the blocking element. In order to further increase the protective effect against manipulation, but also to achieve wear protection of the protective element, which can serve against the inside of the Stulpes as a stop of the blocking element, the protective element may be made of a hardened steel.

Furthermore, the protective element may be made of the same material as the blocking element itself. In addition, the protective element may be made of a plastic material which is injection-molded onto the blocking element. For this purpose, the blocking element can have receiving geometries in order to form a geometrical positive connection between the blocking element and the molded plastic protective element. In particular, however, the protective element can be mechanically attached to the blocking element, wherein the
Connection structure between the protective element and the blocking element is designed to be sufficiently resilient in order to avoid that by means of the manipulative object, the protective element can be released from its position on the blocking element. The protective element may be made of a sheet metal material by means of stamping-bending process, or the protective element is made by means of a metal die-casting process.

The blocking element of the lock with the protective device according to the invention can be designed in various ways. For example, the blocking element can be designed as a lock bolt of the castle. A lock regularly has a lock bolt, which is moved via a lock cylinder between the protruding from the lock closing position and retracted into the lock opening position. Consequently, the lock bolt is used to lock a door, without this can only be opened by a door handle.

The blocking element can be rotationally moved in the opening in the forend or moved along a trajectory.

Furthermore, rotationally moving or moving along a trajectory barrier elements are known which can pivot about a pivot axis which is fixed in the lock introduced or which can be guided in a web to get out of the forend into the closed position. According to the invention, the protective element may be adapted to the embodiment of the blocking element. The cover of the gap is in particular when the blocking element has moved out in the closed position of the forend and the protective element is adapted to the geometric shape of the blocking element.

According to the invention the locking element is designed as a pivot bolt and rotatable about a pivot axis in the castle. There are two protective elements provided which are laterally from the direction of the pivot axis on both sides of the locking element can be arranged and form a collar-shaped Anformung on the pivot bolt. The protective elements may be designed shell-like, and be arranged on both sides of the blocking element such that the protective elements enclose the blocking element at least in the region which also in the closed position of the blocking element in the lock remains. In this case, the shell-like protective elements form a collar which surrounds the part of the blocking element in the shape of a collar which, in the closed position, protrudes from the forend of the lock. In this position, the collar formed by the protective elements adjoins the inner face against the forend of the lock, so that the desired security is provided against manipulation of the locking mechanism within the lock.

The blocking element may have an axle which extends in the pivot axis and forms the mechanical receptacle of the locking element designed as a pivot bolt. The axle bolts may be designed in such a way that the protective elements resting laterally against the blocking element form a constructional unit with the blocking element, and can only be detached therefrom by overcoming considerable mechanical forces.

In particular, the collar-shaped formation of the protective elements on the pivot bolt on the side of the pivot bolt back, since the gap between the pivot bolt and the forend of the lock in the region of the pivot lock back is greatest. This can at a pivot bolt which is rotatable about the pivot axis in the lock, with constant spacing of the opening form a constant gap, which does not change over the entire path of movement of the blocking element.

Furthermore, the blocking element can be designed as a pivot bolt with a pivot bolt back, wherein the protective element is designed as an insertion element and is arranged on the pivot bolt back. The insertion element may preferably be cohesively or positively arranged on the blocking element, and extend only over the pivot bolt back or the insertion element surrounds the pivot bolt at least also in the lateral direction.

According to yet another advantageous embodiment, the protective element can cooperate with an electrical switching means, so that at least one detection of the closing position of the blocking element is made possible by a control unit. The electrical switching means may, for example, a switch, Preferably, a micro switch, form, with which the protective element mechanically cooperates to activate the electrical switching means. For example, information can be transmitted to the control unit as to whether the blocking element is in the closed position or in the open position.

With even further advantage, the protective element in the position moved out of the lock can hit the inside of the cuff against the cuff, wherein the protective element is designed in such a way that the protective element creates a damping effect when it touches the cuff. In particular, when the protective element is made of a plastic material, the advantageous damping effect can be achieved. Further, the protective element may comprise a plastic or rubber insert which damps an inside stop against the forend. If the blocking element is moved into the closed position and this jumps in particular spring assisted in the closed position, so a stop of the protective element against the inside of the Stulpes with a damping effect in particular dampen closing noise.

Fig. 1

eine perspektivische Ansicht eines Sperrelementes mit einem Ausführungsbeispiel eines nicht erfindungsgemäßen Schutzelementes,

Fig. 2

eine perspektivische Ansicht eines Ausführungsbeispiels eines nicht erfindungsgemäßen Schutzelementes,

Fig. 3

eine Seitenansicht der Anordnung eines Sperrelementes in einem Schloss in einer aus dem Stulp hervorspringenden Schließposition,

Fig. 4

ein Sperrelement, welches als Schwenkriegel ausgeführt ist und zwei Schutzelemente gemäß eines Ausführungsbeispiels aufweist und

Fig. 5

eine weitere Ausführung eines Schwenkriegels in einem Schloss, wobei ein weiteres Ausführungsbeispiel eines Schutzelementes dargestellt ist.

Further measures which improve the invention are described in more detail below together with preferred embodiments of the present invention. In a schematic view:

Fig. 1

a perspective view of a blocking element with an embodiment of a non-inventive protective element,

Fig. 2

a perspective view of an embodiment of a non-inventive protective element,

Fig. 3

a side view of the arrangement of a locking element in a lock in a protruding from the forend closing position,

Fig. 4

a locking element, which is designed as a pivot bolt and two protective elements according to an embodiment and has

Fig. 5

a further embodiment of a pivot bolt in a lock, wherein a further embodiment of a protective element is shown.

FIG. 1 shows an embodiment of a non-inventive protection device. Shown is a blocking element 11, which is designed as a lock bolt with a rectangular cross-section and is longitudinally movably guided in an opening of a cuff of the castle. The blocking element 11 has a blocking element shaft 16, to which a blocking element head 17 adjoins. The blocking element shaft 16 forms the part of the blocking element 11 which, both in the opening position and in the closed position of the blocking element 11, remains inside the lock, ie, behind the forend. On the other hand, the locking element head 17 protrudes from the fortress of the lock, when the locking element 11 is moved to the closed position for closing, for example, a door.

In the region of the transition from the blocking element shaft 16 to the blocking element head 17, a protective element 14 is arranged. The protective element 14 is designed as a single part and can in particular be brought into abutment against a locking element edge 18, which forms the transition region between the blocking element shaft 16 and the blocking element head 17. The illustration shows a protective element 14, which is a collar-like border of the
Cross-section of the blocking element head 17 forms. The collar surrounds the cross section of the blocking element head 17 in full.

FIG. 2 shows the protective element 14 as a single part in a perspective view. In order to pass the blocking element shaft 16 through the protective element 14, this has a passage 19 which passes through the protective element 14 in the center. The recess 25 shown in the protective element 14 forms a recess in the protective element 14, and the cross section of the blocking element head 17 can engage in the recess 25 in the protective element 14, so that the locking element edge 18 of the locking element 11 abuts against the bottom surface of the recess 25.

FIG. 3 shows the arrangement of the locking element 11 in a lock 10, which is bounded on the front side by the forend 13. The blocking element 11 is also executed in this example not according to the invention as a lock bolt and linearly movable, wherein the direction of movement is indicated by a double arrow. In the cross-sectional view, the protective element 14 is shown abutting the locking element edge 18, which forms the transition between the blocking element shaft 16 and the blocking element head 17. The locking element 11 is shown in the protruding from the faceplate 13 closing position, and the protective element 14 adjacent to the inside of the faceplate 13 at. Between the blocking element head 17 and the opening 12 in the forend 13, a gap 15 is formed, wherein the gap 15 does not form a continuous region in the direction of the inside of the lock 10, since this is interrupted by the protective element 14. Would be penetrated with a manipulation object through the gap 15 into the interior of the lock 10, the protective element 14 will form a barrier, and the interior of the lock 15 is protected from a manipulation object. The protective element 14 may preferably cohesively or positively with in various ways be connected to the blocking element 11. By way of example only, a weld 26 is shown over which the protective element 14 is adhesively attached to the blocking element 11.

In FIG. 4 is an embodiment of a locking element 11 is shown in a perspective view, which is designed as a pivot bolt. The locking member 11 is rotatably received about a pivot axis 20 in the lock 10 and has a plurality of plate-like elements which form the body of the locking element 11 in a package arrangement and are connected to each other via bolts.

The pivot axis 20 is formed by a pivot pin 24, which axle pin 24 is designed as a screw. According to the invention two protective elements 14 are provided, which are arranged laterally from the direction of the pivot axis 20 on both sides of the pivot bolt. In this case, the protective elements 14 form a collar-shaped projection 21, which extends in particular over the pivot bolt back 22. The collar-shaped Anformung 21 is also formed laterally of the part of the pivot bolt, which is also in the closed position of the pivot bolt inside the lock 10. The protective elements 14 are executed shell-like and surround the locking element 11 from the side. The protective elements 14 are screwed captive over the axle 24 with the locking element 11.

FIG. 5 shows a cross-sectional view through a lock 10 in the region of Stulpes 13. The locking element 11 is also designed as a pivot bolt and rotatably mounted in the lock 10 about the pivot axis 20. In the faceplate 13, the opening 12 is shown, through which the locking element 11 can protrude into the closed position. This results between the Schwenkriegelrücken 22 and the opening 12 of the gap 15, in particular between the Schwenkriegelrücken 22 and the upper side of the opening 12 is formed. In order to interrupt this gap 15 as an insertion channel of a manipulation object for acting on the locking mechanism, a protective element 14 is provided, which is designed as an insertion element 23. This is used on the side of the pivot latch back 22 and welded, for example, in the pivot bolt or soldered. In the position shown, the pivot bolt is in the closed position and protrudes from the faceplate 13. It can be seen that the gap 15 is covered in the direction of the inside of the lock 10 by the insertion element 23.

The present invention is not limited in its execution to the above-mentioned, preferred embodiments. In particular, protective elements 14 can be used with a rectangular base cross section and a central passage 19 for locking elements 11, which serve as a pivot bolt according to the FIGS. 4 and 5 are executed.

LIST OF REFERENCE NUMBERS

10

lock

11

blocking element

12

opening

13

stulp

14

protection element

15

gap

16

Blocking element shaft

17

Locking element head

18

Blocking element edge

19

passage

20

swivel axis

21

collar-shaped formation

22

Swivel bolt back

23

inserter

24

axle

25

recess

26

welding

Claims (4)

1. A lock (10) having a protection apparatus of the lock (10) against manipulation of the lock (10), which lock (10) includes at least one blocking element (11), which, through an opening (12) in a faceplate (13) of the lock (10), is movable out of the lock (10) into a locking position and movable back into the lock (10) into an opening position, wherein at least one protecting element (14) is disposed at the blocking element (11) such that a gap (15) formed between the blocking element (11) and the opening (12) is covered, wherein the protecting element (14) is configured as an individual structural part, which may be disposed at the blocking element (11), wherein the blocking element (11) is configured as a pivotable bolt and rotatable about a pivoting axis (20) within the lock (10),
   characterized in that two protecting elements (14) are provided, which may be disposed laterally from the direction of the pivoting axis (20) on both sides of the blocking element (11) and form a collar-shaped conformation (21) at the pivoting bolt.
2. The lock according to claim 1, characterized in that the blocking element (11) is configured as a pivoting bolt having a pivoting bolt back (22), wherein the protecting element (14) is configured as an insert element (23) and disposed on the pivoting bolt back (22).
3. The lock according to any of the preceding claims,
   characterized in that the protecting element (14) cooperates with an electrical switching means, such that at least a recognition of the locking position of the blocking element (11) is possible by means of a control unit.
4. The lock according to any of the preceding claims,
   characterized in that the protecting element (14) in the position moved forward out of the lock abuts against the faceplate (13) on the inside of the lock and is configured such that the protecting element (14) provides a dampening effect during an abutment against the faceplate (13).

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