DE102015008016A1 - Key, in particular reversible key for a cylinder lock system - Google Patents

Abstract

The invention relates to a key, in particular reversible key for a cylinder lock system with key and key bit, wherein the key bit has a plurality of rotationally symmetrical depressions for receiving pin-like tumblers of a lock cylinder, wherein the pin-like tumblers are designed as a classic two-part arrangement in the lock cylinder housing and in the cylinder core , According to the invention, the key bit is provided with a non-rotationally symmetrical recess in at least one spacer surface between the rotationally symmetrical depressions, which consists of two side walls and a bottom with, in particular arcuate bottom surface, which is bounded by the side walls, so as to provide a further Schlüsselkodierungsmöglichkeit and through the Combination of drilled and milled codes makes unauthorized copying of the key difficult.

Description

The invention relates to a key, in particular reversible key for a cylinder lock system with key and key bit, wherein the key bit has a plurality of rotationally symmetrical depressions for receiving pin-like tumblers of a lock cylinder, wherein the pin-like tumblers are designed as a classic two-part arrangement in the lock cylinder housing and in the cylinder core , according to the preamble of claim 1.

From the US 5,682,779 is a system of key and cylinder lock previously known, which should provide more coding options and greater security.

This is achieved by providing in the key slots which correspond to pins in the cylinder, which have a prismatic shape and engage with their upper side in the respective slots.

The slots in the key can either lie on the longitudinal axis or be arranged parallel to it, but also have very different angular orientations. Specifically, in this regard, reference is made to angles in the range between 0 ° to 360 °. In a preferred embodiment of the solution according to US 5,682,779 the angular position is designed adjustable so that the customer can also make an individual coding. In a further embodiment, the angle and the position of the individual slots are already specified by the manufacturer.

The local slots or milling have an inclined position with respect to the longitudinal axis of the key.

A disadvantage, however, is the necessary production-side effort, especially in variable slot positions and despite angle variability only limited number of coding options.

From the foregoing, it is therefore an object of the invention to provide a further developed solution for a key, in particular reversible key for a cylinder lock system, the key starting from known core pins and corresponding tumblers has a very extensive possibility of additional codes and these codes with a technical solution can be implemented, which goes hand in hand with little manufacturing or technological effort, but at the same time makes it difficult to unauthorized copying the key.

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

Accordingly, the invention is based on a key, in particular a reversible key for a cylinder lock locking system known per se, the key having a key bit and a key bit. The key bit has a plurality of rotationally symmetrical depressions for receiving pin-like tumblers of a corresponding lock cylinder of the locking system, wherein the pin-like tumblers are designed as a classic two-part arrangement in the lock cylinder housing and in the cylinder core.

According to the invention, the key bit is provided with a non-rotationally symmetrical recess in at least one spacer surface between the rotationally symmetrical depressions. This non-rotationally symmetrical additional recess has two parallel side walls and a bottom. The bottom has a, in particular circular arc-shaped bottom surface, which is bounded by the side walls, so as to form a further key coding.

The distance surface between the rotationally symmetrical depressions is understood to be that free surface which exists between adjacent rotationally symmetrical depressions.

With respect to the created non-rotationally symmetrical recesses further pin-like tumblers are designed as a two-part series arrangement, each comprising a cylinder core pin and an associated spring-loaded outer pin.

The outer pin is located in the lock cylinder housing and the core pin in the cylinder core. The further row arrangement is preferably arranged or provided in relation to the already existing, conventional row arrangement opposite and / or incorporated into it.

The further additional key coding with regard to the non-rotationally symmetrical recesses respectively assigned tumbler has a tumbler tip which has a shape that is substantially complementary to the respective non-rotationally symmetric recess.

In this respect, the respective tumbler point on a bow, in particular a circular arc shape, which in particular circular arc-shaped bottom surface or a portion of this bottom surface is formed complementary to be able to dive accordingly in the non-rotationally symmetrical recess can.

The respective tumbler tip represents the core pin for the extended coding possibility or forms part of the same, wherein the core pin is secured while maintaining its displaceability about its longitudinal axis against rotation or rotation about its own axis in the cylinder core.

The relevant angular position then corresponds to the position in the recess of the side walls of the non-rotationally symmetric respective recess.

In one embodiment, the tumbler tip is formed as a stepped part of the core pin. The stepped part corresponds in its geometric shape of the respective associated non-rotationally symmetrical recess or a substantial part of this recess.

In one embodiment of the invention, the side walls of the non-rotationally symmetrical recesses extend parallel to the longitudinal axis of the key bit.

Alternatively or additionally, the side walls of the non-rotationally symmetrical recesses may be oriented at an angle other than 0 ° to the longitudinal axis of the key bit.

The side walls of the non-rotationally symmetric recesses may be parallel to each other or else a predetermined, z. B. include sharp angle.

In a technologically simple manner, the non-rotationally symmetric recesses are designed as milling and the rotationally symmetrical depressions as holes or depressions.

The invention will be explained below with reference to an embodiment and with the aid of figures.

Hereby show:

1 a longitudinal section through a cylinder lock locking system with inserted flat key;

2 a detailed representation of an area according to 1 ;

3 a front view of a cylinder lock system with inserted flat key with marked section plane as shown 1 ;

4 exemplary representations of the formation of the additional core pins with tumbler pins in different views and

5 Representations of another embodiment of a core pin with tumbler tip, wherein the circular arc shape of the tumbler tip in comparison to the illustration 4 other radius (radius 2) has.

The inventive solution according to the embodiment is based on a classic cylinder lock system. In a cylinder housing 1 there is a first cylinder core 2 and a second cylinder core 3 , which via coupling agent 4 are connectable.

The key 5 has in the area of its key bats a variety of rotationally symmetrical depressions on its top and bottom, with pin-like tumblers 6 ; 7 are located in the lock cylinder housing and in the cylinder core and correspond to a classic two-piece series arrangement.

In accordance with appropriate embodiment of the rotationally symmetric depressions in the flat key in conjunction with the relevant pin-like tumblers 6 ; 7 becomes the respective lock level 8th ; 9 released and it can rotate freely the cylinder core.

In addition to the known rotationally symmetrical depressions for receiving the associated pin-like tumblers, in the region of at least one distance surface between these rotationally symmetrical depressions there are further not rotationally symmetrical recesses 10 located. These non-rotationally symmetrical recesses 10 consist of two side walls and a floor, which in particular has a circular bottom surface (see detailed illustration to 2 ).

More pen-like tumblers 11 ; 12 can be formed as a one or two-part arrangement. These other pin-like tumblers 11 ; 12 one cylinder core pin each 13 and an associated spring-loaded outer pin fourteen on. The outside pin fourteen is in the lock cylinder housing 1 and the core pin 13 in the cylinder core 2 located.

The further series arrangement can be provided so far as opposed to the classical series arrangement and / or in this.

The tumbler associated with the further key coding has a tumbler tip 131 which has a shape corresponding to the respective non-rotationally symmetrical recess 10 can be essentially complementary.

So can the tumbler tip 131 have a bow, in particular circular arc shape, as the detailed representation of 2 exemplifies.

Exemplary further embodiments of the tumbler tip 131 are in the 4 and 5 shown.

The respective tumbler tip 131 of the cylinder core pin 13 may itself form the core pin or be part of it. The core pin is while maintaining its longitudinal displacement against rotation or twisting about its own axis in the cylinder core 2 secured, what with the help of a cam-like extension 132 is possible, which finds its fit in a relevant recess in the cylinder core.

According to the representations after the 4 and 5 is the tumbler tip 131 executed as a remote part of the core pin. This stepped part corresponds in its geometric shape of the respective associated, not rotationally symmetrical recess 10 or a corresponding part of this recess.

The side walls of the non-rotationally symmetrical recesses may extend parallel to the longitudinal axis of the key bit. Alternatively, the side walls of the non-rotationally symmetrical recesses may also be oriented at an angle other than 0 ° to the longitudinal axis of the key bit. In this regard, it is then also necessary to ensure a complementary position of the respective additional cylinder core pins with a corresponding tumbler tip.

The representations after the 4 and 5 show an embodiment of the tumbler tip in an arc shape with different radii (radius 1 and radius 2) and parallel planar sections 134 , namely for use in this complementary non-rotationally symmetric recesses with parallel side walls. If, however, the side walls of the non-rotationally symmetric recesses do not run parallel, but z. B. include an angle, in particular an acute angle, the side walls 134 also complementary angular realized (not shown in the figures).

The non-rotationally symmetrical recesses are technologically particularly easy to implement as milling, wherein the rotationally symmetric depressions or recesses are designed as holes or depressions.

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

• US 5682779 [0002, 0004]

Claims (10)

Key, in particular reversible key for a cylinder lock locking system with key and key bit, wherein the key bit a plurality of rotationally symmetrical depressions for receiving pin-like tumblers ( 6 ; 7 ) of a lock cylinder, wherein the pin-like tumblers as a classic two-part arrangement in the lock cylinder housing ( 1 ) as well as in the cylinder core ( 2 ) are executed, characterized in that in at least one distance surface between the rotationally symmetrical depressions of the key bit a non-rotationally symmetrical recess ( 10 ), which consists of two side walls and a bottom with, in particular circular arc-shaped, bottom surface, which is bounded by the side walls, to form a further key coding. Key according to claim 1, characterized in that further pin-like tumblers ( 11 ; 12 ) are formed as a two-part series arrangement, each having a cylinder core pin ( 15 ) and an associated spring-loaded outer pin ( fourteen ), wherein the outer pin in the lock cylinder housing and the core pin located in the cylinder core and the other row arrangement of the classical series arrangement opposite and / or provided in this is provided. Key according to Claim 1 or 2, characterized in that the tumbler respectively associated with the further key coding comprises a tumbler tip ( 131 ), which has a shape corresponding to the respective non-rotationally symmetrical recess ( 10 ) may be substantially complementary. Key according to claim 3, characterized in that the tumbler tip ( 131 ) has a bow, in particular circular arc shape, which is complementary to the particular circular arc-shaped, bottom surface or a portion of this bottom surface. Key according to claim 3 or 4, characterized in that the respective tumbler tip forms the core pin or is part of the same, wherein the core pin is secured while maintaining its longitudinal displaceability against rotation or rotation about its own axis in the cylinder core. Key according to one of claims 3 to 5, characterized in that the tumbler tip ( 131 ) is formed as a remote part of the core pin and the stepped part corresponds in its geometric shape of the respective associated, not rotationally symmetrical recess or a part of this recess. Key according to one of the preceding claims, characterized in that the side walls of the non-rotationally symmetrical recesses extend parallel to the longitudinal axis of the key bit. Key according to one of claims 1 to 6, characterized in that the side walls of the non-rotationally symmetrical recesses are oriented at an angle deviating from 0 ° to the longitudinal axis of the key bit. Key according to one of claims 1 to 6, characterized in that the side walls of the non-rotationally symmetrical recess parallel to each other or enclose a predetermined angle. Key according to one of the preceding claims, characterized in that the non-rotationally symmetrical recesses are designed as milling and the rotationally symmetrical depressions as bores or depressions.

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