DE202015003887U1 - Key for a lock cylinder of a key-lock system - Google Patents

Abstract

Key (1) for a lock cylinder (2) of a key-lock system with key and key bit (3), the key bit having a plurality of control recesses for receiving portions of associated tumbler pins (4) of the lock cylinder (2), characterized in that at least one of the control recesses has a recess for receiving a mold pin (5) inserted there, the mold pin having a stylus tip (6) of predetermined contour and furthermore at least the stylus tip (6) based on the material of the key bar (3) and / or the Zuhaltestifte (4) has other hardness and / or wear properties.

Description

The invention relates to a key for a lock cylinder of a key-lock system with key and key bit, wherein the key bit has a plurality of control recesses for receiving portions of associated tumbler pins of the lock cylinder, according to the preamble of claim 1.

From the DE 1 093 253 B is a key for rotary cylinder locks previously known, the local key has a longitudinal channel in which a tongue channel across three longitudinally displaceable beard step plates are arranged. When the key is inserted, the beard treads bring the tumbler pins arranged opposite the beard step plates into a starting position, in particular a so-called zero position.

In the locking system to US 2013/0091910 A1 is assumed by a key, the core key can be attached to the key, which allow additional coding.

The US 2013/0298621 A1 shows a key for a locking system, which has movable elements which cooperate with the mold pins of the lock cylinder. At the key for a rotary lock cylinder after WO 2015/004192 A1 the key has at least one movably arranged control element which has a control surface cooperating with a tumbler of the rotary locking cylinder.

The US Pat. No. 7,958,760 B2 on the other hand, a key-lock system with protrusions and recesses formed in the key by milling out with the aim of increasing the coding possibilities. The technique of milling out to obtain a multi-dimensional structure in the key profile is on the one hand very expensive and on the other hand not copy protection.

From the foregoing, it is therefore an object of the invention to provide a further developed key for a lock cylinder of a key-lock system with key and key bit, which allows an extension of the coding options and wherein the possibility is given to specify the duration of use of the key or set. In this case, the key to be created should be inexpensive and easy to produce, starting from a basic system key by simple measures, the mentioned coding options are expandable.

The object of the invention is achieved by a key for a lock cylinder of a key-lock system according to the combination of features of claim 1, wherein the dependent claims comprise at least expedient refinements and developments.

According to the invention, an additional recess, in particular a bore for receiving a mold pin to be used there, is formed in at least one of the usual control recesses in the key bit. The stylus has a stylus tip of predetermined contour. In the respective recess now completely different shape pins can be introduced with different stylus tips, so easily arise from a round profile manifold further coding possibilities.

Characterized in that the mold pin, but at least the stylus tip, may consist of a completely different material than that of the actual key, the possibility according to the invention, for example, to select a material for the molding pin, which has a lower hardness and thus a higher wear. This creates a possibility, after a certain period of use the key almost automatically unusable.

The introduction of the holes for receiving the mold pins can be carried out in a simple technological manner. Costly milling, especially for forming two- or three-dimensional structures are avoidable. Ultimately, the form of pins are virtually hidden and miniaturized ausbildbar, so that the user does not readily understand the meaning of the same, which in turn also serves to increase the security against unauthorized copying. The mold pins can be securely fixed in the recesses positively, non-positively and / or cohesively.

In a preferred embodiment, when the key is inserted in the lock cylinder, the respective stylus tip comes into contact with the flank of the respectively associated tumbler pin. In particular, the respective stylus tip lies on the flank of the respectively associated tumbler pin. Only then is a release position with the possibility of rotation of the lock cylinder achieved.

The stylus tip can z. B. be formed as a cone, truncated cone, pyramid, truncated pyramid or in the form of a wedge-like blade similar to the cutting edge shape of a chisel.

The mold pins include a mold pin foot which is partially or completely inserted in the recess in the key bit.

In one embodiment of the invention, the mold pin foot can have, in sections, a structuring, in particular a profiling or knurling or a circumferential thread cutting, on the outer peripheral side.

The structuring or profiling may preferably extend on the outer peripheral side in the direction of the longitudinal extent of the shaped pin, but may also be formed as a spiral-like cutting edge, so that a secure hold of the shaped pin in the recess is ensured.

The Formstiftfuß in a preferred embodiment, the shape of a cylinder. Likewise, however, it is possible to design the form pin base spherical, barrel-shaped or bulbous in order to secure this frictionally by pressing in the key.

About the choice of the wear properties of the molded pin material, in particular the pen tip can, as already explained, the use and duration of the respective key can be specified.

The invention will be explained in more detail below with reference to embodiments and figures.

Hereby show:

1a a side view in partially broken-away view of a lock cylinder with inserted key and recognizable locking pins that interact with tax recesses in the key bit;

1b a detailed view according 1a an exemplary tumbler pin interacting with a mold pin, the mold stud being located in a recess in the region of a control recess of the key;

1c a sectional view along the line AA according to 1b again having a recognizable stylus located within a recess in the key bit of the key, the stylus tip resting on the flank of an associated tumbler pin;

2a a perspective view of an exemplary mold pin formed in the region of the Formstiftfußes in the longitudinal axis direction of the mold pin knurling in the form of a toothing;

2 B a side view of the formation of the mold pin according to 2a ;

3a to c is a side view, a plan view and a perspective view of a molding pin with a truncated-cone shaped pin tip and cylindrical Formstiftfuß;

4a to c is a side view, a front view and a perspective view of a mold pin with a cylindrical Formstiftfuß and conical stylus tip;

5a to c is a side view, a front view and a perspective view of another embodiment of a mold pin with a cylindrical Formstiftfuß and a stylus tip formed as a wedge-shaped blunt cutting edge;

6a to c is a representation similar to that after 5 to c, but with a continuous, acute-angled wedge in the area of the stylus tip;

7a to c is a side view, a front view and a perspective view of another embodiment of a mold pin with a cylindrical Formstiftfuß and a stylus tip as a truncated pyramid;

8a to c, an embodiment of a molding pin similar to that according to the 7a to c, but with a cone tip in the area of the pen tip;

9 a side view of a mold pin with spherical pin base and apex;

10a , b is a side view of another embodiment of a mold pin with a spherical or bulbous or barrel-shaped Formstiftfuß and circumferential protruding cutting edges, wherein a cutting edge in detail in the 10b is shown, and

11 a side view of a molding pin with Kegelformstiftepitze and spherical Formstiftfuß, wherein on the surface of the Formstiftfußes two exemplary oblique cutting edge projections are formed in the form of a thread.

As in the 1a to 1c As shown, the invention proceeds from a standard key 1 out, with a lock cylinder 2 a key-lock system interacts. In the key bit 3 of the key 1 is a variety of particular milled control recesses for receiving portions of associated tumbler pins 4 of the lock cylinder 2 brought in.

Within at least one of the tax recesses (see in particular 1b ) is a recess for receiving a used there mold pin 5 formed, wherein the molding pin a stylus tip 6 having predetermined contour.

At least the pen tip 6 is related to the material of the key bast 3 and / or the tumbler pins 4 provided with other hardness and / or wear properties.

The respective stylus tip 6 arrives in the lock cylinder introduced correct key in contact with the edge of the respective tumbler pin, as in particular from 1b and 1c is apparent.

The 2a and 2 B show an exemplary mold pin.

This mold pin possesses in the 2a and 2 B the shape of a truncated cone. The mold pin foot 7 has a cylindrical shape of the basic structure, which extends over a peripheral portion of the Formstiftfußes 7 a directed in the longitudinal direction of the forming pin knurling in the form of a toothing 8th located when pressing the mold pin 5 in the associated recess in the key bit for a secure and tight fit due to the resulting form-fitting ensures.

The embodiment according to the 3a to 3c shows a stylus 5 with cylindrical pin base 7 and a stylus tip 6 as a truncated cone, the 4a to 4c an embodiment analogous to that after 3a , but with a cone tip in the area of the pen tip 6 ,

The illustrations according to 5a to c and 6a to c show the embodiment of a mold pin with a pen tip once as a blunt wedge ( 5a to 5c ) and as a pointed wedge ( 6a to 6c ).

A truncated pyramid-like shape of a stylus tip is in 7a to 7c removable, wherein a pointed pyramid of a stylus with corresponding stylus tip in the 8a to 8c is shown.

In one embodiment of the invention, the Formstiftfuß 7 a spherical shape or barrel-like shape 71 have, as in the 9 shown.

In addition, this spherical shape 71 still with circumferential cutting edges 72 according to the 10a and 10b be provided.

The cutting edges 72 can substantially perpendicular to the marked longitudinal axis according to 10a be realized, but also circulate circumferentially under an inclination, as in the 11 is shown.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 1093253 B [0002]
• US 2013/0091910 A1 [0003]
• US 2013/0298621 A1 [0004]
• WO 2015/004192 A1 [0004]
• US 7958760 B2 [0005]

Claims (10)

Key ( 1 ) for a lock cylinder ( 2 ) of a key-lock system with a key and a key bit ( 3 ), wherein the key bit a plurality of control recesses for receiving sections of associated tumbler pins ( 4 ) of the lock cylinder ( 2 ), characterized in that within at least one of the control recesses a recess for receiving a mold pin used there ( 5 ) is formed, wherein the molding pin a stylus tip ( 6 ) has given contour and continue at least the stylus tip ( 6 ) relative to the material of the key fob ( 3 ) and / or the locking pins ( 4 ) has other hardness and / or wear properties. Key according to claim 1, characterized in that the respective stylus tip ( 6 ) in the lock cylinder introduced key ( 1 ) in contact with the flank of the respectively associated tumbler pin ( 4 ). Key according to one of the preceding claims, characterized in that the stylus tip ( 6 ) is designed as a cone, truncated cone, pyramid, truncated pyramid or in the form of a wedge-like cutting edge. Key according to one of the preceding claims, characterized in that the molding pin has a mold pin foot ( 7 ), which is partially or completely inserted in the recess in the key bit, wherein the Formstiftfuß at least partially outer peripheral side has a structuring, in particular profiling, knurling or a circumferential thread cutting. Key according to one of the preceding claims, characterized in that on the choice of the wear properties of the molded pin material, the use and duration of use of the respective key is controllable. Key according to one of the preceding claims, characterized in that the one or more mold pins are firmly and immovably fixed in the respectively associated recess. Key according to claim 4, characterized in that the mold pin foot ( 7 ) is cylindrical. Key according to claim 4, characterized in that the mold pin foot ( 7 ) a convex or bulbous shape ( 71 ) having. Key according to one of the preceding claims, characterized in that the recess for receiving the respective mold pin ( 5 ) is formed by drilling. Key according to claim 2, characterized in that the respective stylus tip ( 6 ) with key inserted in the lock cylinder ( 1 ) on the flank of the respectively associated tumbler pin ( 4 ) rests.

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