DK2907944T3

DK2907944T3 - LOCK WITH A LOCK PROTECTION DEVICE AGAINST MANIPULATION OF THE LOCK

Info

Publication number: DK2907944T3
Application number: DK15160482.4T
Authority: DK
Inventors: Lars Lundberg; Hans-Rainer Speckamp
Original assignee: Dormakaba Deutschland Gmbh
Priority date: 2010-04-01
Filing date: 2011-03-22
Publication date: 2018-07-23
Also published as: DE102010003644A1; EP2553190A1; EP2907944B1; SG184316A1; EP2907944A1; EP2553190B1; CN102834573B; DK2553190T3; WO2011120845A1; CN102834573A

Description

Lock having a protecting apparatus of the lock against manipulation of the lock

Description [0001] The present invention relates to a lock having a protecting apparatus of the lock against manipulation of the lock, wherein said lock includes at least one blocking element, which, through an opening in a faceplate of the lock, is movable forward and out of the lock into a locking position, and is movable back into the lock into an opening position.

[0002] Locks for doors, gates, windows and the like are known to be manipulatable in that the locking mechanism within the lock is tempered with by a manipulation object. The manipulation object may be introduced into the lock through the opening in the faceplate, because a gap is formed between the blocking element and the opening. In the event a spring wire or preferably a spring plate is used as the manipulation object, in particular with non-rebated doors, the manipulation object may easily act upon the pushback stop of the blocking element, in particular upon the lever tumbler. In case the pushback stop of the blocking element, for example of a lock dead-bolt or of a lock latch-bolt, is released, the blocking element may be guided back into the opening position of the lock, and an unauthorized individual may pass the door.

[0003] The gap between the blocking element and the opening is created in particular in that a more or less large sized clearance fit between the blocking element and the opening is required. Often, the opening in the faceplate serves as the guide of the movable blocking element, which for example may be represented by a dead-bolt or a latch-bolt. In addition, the clearance fit compensates for manufacturing tolerances of the individual structural components, whereby the gap may reach a lateral dimension of 0,5 mm for example.

[0004] Simple locks do not offer any safety precautions against a possible manipulating of the locking mechanism within the lock, such that they are categorized in a low class of burglar resistance. Higher quality locks include blocking elements, which are geometrically configured in that the gap between the blocking element and the opening may be at least partially covered. For example, a blocking element may include a blocking element shank with a smaller cross-section and a blocking element head with a larger cross-section. At the transition between the blocking element shank and the blocking element head, the blocking element head may have a collar-like conformation, which, however, considerably complicates manufacturing of the blocking element.

[0005] It is in particular disadvantageous in that specifically the blocking elements having a conformed manipulation protection need to be manufactured in an expensive process, for example by casting, moulding, transforming or the like. Machining the guiding surfaces, which serve for guiding the blocking element in the opening of the faceplate, is made particularly more difficult by the conformations for forming a manipulation protection, because the latter are no longer flat over the entire surface. However, in general machining work is required, as this is the only way to manufacture sufficient smooth and dimensional precise guiding surfaces at the blocking element. For high quality dead-bolts made from stainless steel, the machining simultaneously serves for surface refinement, e.g. by means of grinding, burnishing, polishing and the like. The document W02010/098721 A1 published in the mean-time discloses such a blocking element.

[0006] The document EP 2 907 944 A discloses a lock of said species.

[0007] Therefore, it is the object of the present invention to provide a protecting apparatus for a lock against manipulation of the lock, which may be easily manufactured and offers a high degree of security.

[0008] This problem is solved based on a lock with a protecting apparatus of the lock against manipulation of the lock according to the generic part of claim 1. Advantageous further developments of the invention are indicated in the dependent claims.

[0009] The invention includes the technical teaching that at least one protecting element be disposed at the blocking element such that a gap formed between the blocking element and the opening is covered.

[0010] In the event a protecting element is disposed at the blocking element, the gap created between the blocking element and the opening is covered to such an extent that a manipulation object may no longer be introduced through the gap and into the lock. If it is attempted to push a manipulation object through the gap, the manipulation object abuts against the protecting element, and it is impossible to move the manipulation object any further into the inside of the lock. According to the invention, the protecting element is configured as an individual structural component, which may be disposed at the blocking element. As a consequence, the blocking element may be manufactured from simple flat materials, wherein the finishing work of the guiding surfaces may be realized by simple machining operations, because the surfaces are entirely flat and no conformations for forming the manipulation protection could interfere with the flat machining operations.

[0011] The blocking element may include a blocking element shank and a blocking element head, wherein the protecting element is disposed at the blocking element in the area of the transition from the blocking element shank to the blocking element head. The blocking element head forms the part of the blocking element, which is able to project from the faceplate of the lock, if the blocking element is moved into the locking position. The blocking element shank forms the part of the blocking element which is oriented towards the inside of the lock and the locking mechanism acts upon the shank in order to induce the movement between the locking position and the opening position into the blocking element. With particular advantage, the protecting element may be disposed at the location at the blocking element, at which the blocking element shank transitions into the blocking element head. Said transition location is located almost at the rear side of the faceplate, when the blocking element is moved forward out of the lock and into the locking position. As a consequence, the protecting element is likewise located at the rear side at the faceplate, and an access to the inside of the lock through the gap is interrupted directly behind the faceplate, if the blocking element is moved forward out of the lock in order to occupy its locking position.

[0012] The blocking element shank may have a smaller cross-section than the blocking element head and, in the area of the transition from the blocking element shank to the blocking element head, may form a blocking element edge, wherein, from the direction of the blocking element shank, the blocking element is brought into abutment against the blocking element edge. The cross-section of the blocking element may correspond to a rectangular cross-section and the rectangular cross-section of the blocking element head has longer edge lengths than the edge lengths of the rectangular cross-section of the blocking element shank. Thus, a blocking element edge is created with an edge surface, which extends transversely to the direction of movement of the blocking element. The protecting element may be brought into abutment against said edge surface.

[0013] It is with advantage that the protecting element surrounds the blocking element at least partially and preferably completely such that the entire circumference of the gap between the blocking element and the opening is covered. As a consequence, no manipulation object may be introduced from either side into the gap between the blocking element and the opening in the faceplate. In particular with blocking elements having a basic rectangular cross-section, the protecting element may be configured such that the entire circumference of the blocking element is covered. A protecting element, which is disposed at the side of the blocking element, which is directed in the direction of a free door gap, achieves a particular protecting effect.

[0014] According to a potential advantageous embodiment of the present inventive protecting apparatus, the protecting element may be latched, clipsed, screwed, welded, soldered, pressed and/or injection-moulded to the blocking element by means of plastic material injection moulding. With the intention to not only achieve an increased protection effect against manipulation, but also a wear protection for the protecting element, which may serve as an abutment for the blocking element at the inside of the faceplate, the protecting element may be manufactured from hardened steel.

[0015] Furthermore, the protecting element may be manufactured from the same material as the blocking element itself. Furthermore, the protecting element may be manufactured from a plastic material, which is spray-moulded to the blocking element. For this purpose, the blocking element may include reception geometries with the intention to create a geometric form closure between the blocking element and the spray-moulded plastic material protecting element. However, the protecting element may be in particular mounted mechanically to the blocking element, wherein the connecting structure between the protecting element and the blocking element is configured to resist sufficient load in order to prevent the protecting element from being released from the position thereof at the blocking element by means of the manipulation object. The protecting element may be manufactured from sheet metal material by means of a bending-stamping process or else the protecting element is manufactured in a metal die-casting process.

[0016] The blocking element of the lock including the inventive protecting apparatus may be configured in different ways. For example, the blocking element may be configured as a lock dead-bolt of the lock. Generally, a lock presents a lock dead-bolt, which is moved between the locking position, in which it protrudes from the lock, and the opening position, in which it is retracted into the lock by means of the locking cylinder. As a consequence, the lock dead-bolt serves for interlocking a door, without the latter being able to be simply opened by means of a door knob.

[0017] The blocking element may be moved rotationally or along a trajectory within the opening in the faceplate.

[0018] Furthermore, blocking elements, which are rotationally moved forward or along a trajectory, are known and may pivot about a pivoting axis, which is stationarily inserted into the lock or which may be guided in a path in order to reach the locking position, in which it is moved out of the faceplate. According to the invention, the protecting element may be adapted to the embodiment type of the blocking element. The covering of the gap is realized in particular, if the blocking element in the locking position is moved forward and out of the faceplate, and the protecting element is adapted to the geometrical shape of the blocking element.

[0019] According to the invention, the blocking element is configured as a pivoting bolt and rotatable about a pivoting axis within the lock. Two protecting elements are provided, which may be disposed laterally from the direction of the pivoting axis on both sides of the blocking element and form a collar-shaped conformation at the pivoting bolt. The protecting elements may be configured like shells, and be disposed on both sides at the blocking element in that the protecting element surrounds the blocking element at least in the area, which remains within the lock also in the locking position of the blocking element. In this case, the shelllike protecting elements form a collar, which surrounds the part of the blocking element like a collar, which, in the locking position, projects from the faceplate of the lock. In said position, the collar formed by means of the protecting elements borders against the faceplate of the lock, such that the intended security against manipulation of the locking mechanism within the lock is created.

[0020] The protecting element may include an axle pin, which extends in the pivoting axis and forms the mechanical reception of the blocking element configured as the pivoting bolt. The axle pins may be configured such that the protecting elements, bearing laterally against the blocking element, together with the blocking element form one structural unit, and may be only released from the latter, by means of considerable mechanical forces.

[0021] In particular said collar-shaped conformation of the protecting elements is created at the pivoting bolt on the side of the pivoting bolt back, because the gap between the pivoting bolt and the faceplate of the lock is the largest in the area of the pivoting bolt back. Said conformation, with a pivoting bolt, which is rotatable about the pivoting axis within the lock, may form a constant gap having the same distance of the opening, wherein said gap does not change over the entire movement path of the blocking element.

[0022] Furthermore, the blocking element may be configured as a pivoting bolt having a pivoting bolt back, wherein the protecting element is formed as an insert element and is disposed on the pivoting bolt back. Preferably, the insert element may be connected positively by material or positively by form at the blocking element, and extend just over the pivoting bolt back, or else the insert element surrounds the pivoting bolt at least partially likewise in lateral direction.

[0023] According to yet another advantageous embodiment, the protecting element may cooperate with an electrical switching means such that a control unit is able to at least detect the locking position of the blocking element. For example, the electrical switching means may form a switch, preferably a micro-switch, with which the protecting element mechanically cooperates, in order to activate the electrical switching means. Thereby, for example, information may be transmitted to the control unit on whether or not the blocking element is located in the locking position or in the opening position.

[0024] With even further advantage, the protecting element, in the position, where it is moved forward out of the lock, may abut against the faceplate from inside the lock, wherein the protecting element is configured such that the protecting element creates a dampening effect upon abutment against the faceplate. In particular in the event the protecting element is realized from a plastic material, the advantageous dampening effect may be achieved. Furthermore, the protecting element may include an insert made from plastic material or from rubber, which insert dampens an inside abutment against the faceplate. If the blocking element is moved into the locking position, and if the latter projects, in particular assisted by a spring, into the locking position, a dampening effect may dampen an abutment of the protecting element against the inside of the faceplate, in particular dampen locking noises.

[0025] Further measures enhancing the invention will be illustrated in more detail in conjunction with preferred exemplary embodiments of the present invention. In a diagrammatic view it is shown in:

Figure 1 a perspective view of a blocking element including an exemplary embodiment of a non-inventive protecting element,

Figure 2 a perspective view of a blocking element including an exemplary embodiment of a non-inventive protecting element,

Figure 3 a lateral view of the arrangement of a blocking element in a lock in a locking position where it is projected forward out of the faceplate,

Figure 4 a blocking element, which is configured as a pivoting bolt and includes two protecting elements according to an exemplary embodiment, and

Figure 5 another embodiment of a pivoting bolt in a lock, wherein another exemplary embodiment of the protecting element is illustrated.

[0026] Figure 1 shows an exemplary embodiment of a non-inventive protecting apparatus. The blocking element 11 is illustrated, which is configured as a lock dead-bolt having a rectangular cross-section and being longitudinally movably guided in an opening of a faceplate of the lock. The blocking element 11 has a blocking element shank 16 transitioning into a blocking element head 17. The blocking element shank 16 forms the part of the blocking element 11, which both in the opening position and in the locking position of the blocking element 11 remains inside the lock, i. e. behind the faceplate. However, the blocking element head 17 is projected forward out of the faceplate of the lock, when the blocking element 11 is moved into the locking position, for example for locking a door.

[0027] A protecting element 14 is disposed in the area of the transition of the blocking element shank 16 to the blocking element head 17. The protecting element 14 is configured as an individual part and may be in particular brought to an abutment against a blocking element edge 18, which forms the transition area between the blocking element shank 16 and the blocking element head 17. The illustration shows a protecting element 14, which forms a collar-type surrounding of the cross-section of the blocking element head 17. In this case, the collar surrounds the entire circumference of the cross-section of the blocking element head 17.

[0028] Figure 2 shows the protecting element 14 as an individual part in a perspective view. In order to pass the blocking element shank 16 through the protecting element 14, the latter has a passage 19, which is disposed in the middle of the protecting element 14. The aperture 25 shown in the protecting element 14 forms a depression in the protecting element 14, and the cross-section of the blocking element head 17 may engage into the depression 25 in the protecting element 14 such that the blocking element edge 18 of the blocking element 11 is brought into abutment against the bottom surface of the depression 25.

[0029] Figure 3 shows the arrangement of the blocking element 11 in a lock 10, the front side thereof being delimited by the faceplate 13. In this non-inventive example, the blocking element 11 is likewise configured as a lock dead-bolt and linearly movable, wherein a double arrow indicates the direction of movement. In the cross-sectional view, the protecting element 14 is shown to border the abutment at the blocking element edge 18, which forms the transition between the blocking element shank 16 and the blocking element head 17. The blocking element 11 is shown in the locking position, where it projects forward out of the faceplate 13, and the protecting element 14 is bordering the inside of the faceplate 13. A gap 15 is formed between the blocking element head 17 and the opening 12 in the faceplate 13, wherein the gap 15 does not form a continuous area in the direction towards the inside of the lock 10, because the gap is interrupted by the protecting element 14. In the event a manipulation object would be introduced through the gap 15 into the inside of the lock 10, the protecting element 14 will form a barrier, and the inside of the lock 15 is protected against a manipulation object. The protecting element 14 may be connected in different ways to the blocking element 11, preferably positively by material or positively by form. Just by way of example, a welding 26 is shown, by means of which the protecting element 14 is attached positively by material to the blocking element 11.

[0030] Figure 4 shows in a perspective view of an exemplary embodiment of a blocking element 11, which is configured as a pivoting bolt. The blocking element 11 is accommodated in the lock 10 to be rotationally movable about a pivoting axis 20 and includes a plurality of plate-shaped elements, which are connected to each other, which in a package arrangement form the body of the blocking element 11 and are connected to each other via bolts [0031] The pivoting axis 20 is formed by means of an axle pin 24, which axle pin 24 is configured as a screw element. According to the invention, two protecting elements 14 are provided, which, respectively from the direction of the pivoting axis 20, are disposed laterally on both sides at the pivoting bolt. In this case, the protecting elements 14 form a collar-shaped conformation 21, which in particular extends over the pivoting bolt back 22. The collar-shaped conformation 21 is respectively formed laterally of the portion of the pivoting bolt, which also in the locking position of the pivoting bolt is located inside the lock 10. The protecting elements 14 are configured like shells and surround the blocking element 11 from a lateral direction. The protecting elements 14 are screwed in a captive manner to the blocking element 11 and via the axle pin 24.

[0032] Figure 5 shows a cross-sectional view through a lock 10 in the area of the faceplate 13. The blocking element 11 is likewise configured as a pivoting bolt and supported in the lock 10 to be rotatable about the pivoting axis 20. The opening 12 is shown in the faceplate 13, through which opening the blocking element 11 is able to project forward into the locking position. In this case, a gap 15 is created between the pivoting bolt back 22 and the opening 12, which gap is formed in particular between the pivoting bolt back 22 and the upper side of the opening 12. With the intention to interrupt said gap 15 as an introduction channel for a manipulation object intended for acting upon the locking mechanism, a protecting element 14 is provided, which is configured as an insert element 23. Said insert element is inserted on the side of the pivoting bolt back 22 and, for example, is welded or soldered to the pivoting bolt. In the position shown, the pivoting bolt is located in the locking position and projects from the faceplate 13. It can be seen in this case, that the gap 15 is covered by the insert element 23 in the direction towards the inside of the lock 10.

[0033] The embodiment of the present invention is not limited to the above presented preferred embodiments. In particular, protecting elements 14 with a rectangular basic cross-section and a central passage 19 may be utilized for blocking elements 11, which are configured as pivoting bolts according to the Figures 4 and 5.

List of reference numerals [0034] 10 lock 11 blocking element 12 opening 13 faceplate 14 protecting element 15 gap 16 blocking element shank 17 blocking element head 18 blocking element edge 19 passage 20 pivoting axis 21 collar-shaped conformation 22 pivoting bolt back 23 insert element 24 axle pin 25 aperture 26 welding

Claims

A lock (10) having a protective device in the lock (10) against manipulation of the lock (10), the lock (10) comprising at least one locking element (11) which can be moved forward from the lock (10) through an opening ( 12) in a locking post (13) in the lock (10) to a locked position and can be moved back in the lock (10) to an open position where at least one protective element (14) is placed on the locking element (11), thus a slot (15) formed between the locking member (11) and the opening (12) is covered, wherein the protective member (14) is designed as a single component which can be placed on the locking member (11), wherein the locking member (11) is designed as a pivot bolt and can be rotated about a pivot axis (20) in the lock (10), characterized in that two protective elements (14) are provided which can be placed on both sides of the locking element (11) laterally with respect to the pivot axis (20). ) direction and forms a collar-shaped configuration (21) on the pivot bolt.

Lock according to claim 1, characterized in that the locking element (11) is designed as a pivot bolt with a pivot bolt (22), wherein the protective element (14) is designed as an insertion element (23) and is located on the pivot bolt (22).

Lock according to one of the preceding claims, characterized in that the protective element (14) cooperates with an electrical coupling means, so that at least the locking position of the locking element (11) can be identified by a control unit.

Lock according to one of the preceding claims, characterized in that the protective element (14) in the position moved forward from the lock, abuts on the inside of the lock against the locking post (13) and is designed in such a way that the protective element ( 14), when abutting against the locking post (13), provides damping effect.