EP1350909B1 - Key for cylinderlocks - Google Patents

Abstract

Key for a cylinder lock has a key shaft (3) with at least three control grooves (4-6) running primarily along the shaft insertion direction so that they also intersect in a number of points. One of the grooves (6) is deeper than the remaining three. The key shaft is essentially cylindrical and the grooves are cut into it. The invention also relates to a corresponding cylinder lock.

Description

The invention relates to a key for cylinder locks with an elongated Key shank that has at least one set of at least three, mainly in Key insertion direction extending and at least partially overlapping control grooves carries, one tax groove deeper than the other two, substantially parallel to each other extending control grooves is formed, the key shaft possibly with at least can be provided with a further control element. The invention further relates to Cylinder lock for such a key.

Conventional keys of this type are designed as flat keys, in which on the side surfaces of the flat key a control groove set is arranged. Such a flat key is known for example from AT-PS 389 559.

The present invention is intended to provide a key for cylinder locks at increased locking security while maintaining a very high number of possible variations as well as increased duplicate key security. This is according to the invention achieved that a substantially cylindrical key shaft is provided in the spatially curved outer surface which runs mainly in the direction of key insertion and at least partially overlapping tax grooves of at least one tax groove set are.

In the inventive design of the key, the spatially different closes Configuration of the distribution of the key shaft, which is distributed over the circumference of the key shaft, and different Angles in the key shank of the control nut of the respective control nut set a production of duplicate keys practically. The tax grooves of each tax groove set extend along 3-dimensional space curves, which are mainly in the direction of key insertion run, but are spatially intertwined and partially overlap each other. Even if the control grooves running along these 3-dimensional space curves each for are formed as a radial groove with parallel side walls, the three control grooves form one Tax groove set, due to the different angular position of their side walls, along the Key shank continually changing undercuts. This spatially 3-dimensional high complex configuration of the control grooves of each individual control groove set can be very complex CNC machines can be manufactured precisely. But it cannot from the original key more accepted with sufficient accuracy for the production of duplicate keys become.

To further increase the complexity of the spatial configuration of the control grooves, can mainly in the along the spatially curved outer surface of the key shaft Key slots running control grooves with irregularly distributed over their length and differently designed undercuts in the outer surface of the key shaft his.

To different variations in the undercuts of the tax grooves of a tax groove set can generate individual control grooves as a whole, or only in places, instead of something radial pierced into the key shaft at an angle to the respective radius with parallel side walls become.

The key according to the invention can have a hollow key shaft, the two on their in Has side shells connected to one another, each of which has a set of control grooves embedded in its spatially curved outside is. This enables a very stable and at the same time very light design of the invention Key.

According to a further feature of the invention, the key shaft can be tubular be and on its cylindrical outside two opposite one another, along the connecting lines of the two half shells extending in the direction of the key insertion or Have longitudinal grooves. This training allows the use of the key as a reversible key.

According to a further feature of the invention, the key shaft can be fully formed and have two shaft halves on the outside each containing a set of control grooves.

To facilitate the insertion of the key into the cylinder lock and at the same time the Control elements of the cylinder lock interacting with the control grooves of the key shaft To align the control grooves of the key can be provided according to the invention that the Control grooves of each set of control grooves into a key tip that widens towards the key tip open and recessed into the spatially curved outer surface of the key shaft Opening.

The cylinder lock according to the invention sets the associated with the key according to the invention high number of possible variations to secure locks, in addition to the large number great locking security and great security against break-ins is and the cylinder lock according to the invention practically only locked with original keys can be.

The cylinder lock according to the invention is characterized in that along the key channel at least one first annular control element surrounding the cylindrical key shaft with an inwardly projecting, engaging in a shallow tax groove of the key shaft, first control member and at least one second surrounding the cylindrical key shaft ring-shaped control element with an inwardly protruding, deep control groove of the key shaft engaging, second control member are arranged, and that further at least one locking element it is provided that in a corresponding position of the control elements in a release position can be brought for the rotation of the cylinder core relative to the cylinder housing.

According to a further feature of the invention, the annular first control elements in each case two inwardly projecting, engaging in the two shallow control grooves of a control groove set, have second control bodies. This training ensures that the ring-shaped first control elements also at the crossing points of the control grooves of a control nut set always intervene with one of their tax organs in a shallow tax groove of the key shaft.

According to another feature of the invention, the first and second annular ones Controls can be arranged alternately along the key channel.

According to a further feature of the invention, between two mutually adjacent annular control elements a non-rotatably held in the core sleeve, annular washer can be arranged, of which on both sides facing in it, backdrop grooves of the two control elements that extend only over a circular sector, protrude axial stop bolts. This design of the cylinder lock allows a restriction the range of rotation of the key according to the invention to a predetermined angular range, the due to the same size and position of the circular sector of their slot grooves in all ring-shaped control elements is set.

Fig. 1

eine erste Ausführungsform eines erfindungsgemäßen Schlüssels mit einem voll ausgebildeten Schlüsselschaft und zwei, an ihrer Außenseite jeweils einen Satz von Steuernuten enthaltende Schafthälften in Stirnansicht

Fig. 2

den Schlüssel der Fig. 1 in einer Schrägansicht mit vorne liegender linker Schlüsselschafthälfte,

Fig. 3

den Schlüssel der Fig. 1 in einer Schrägansicht mit vorne liegender rechter Schlüsselschafthälfte

Fig. 4

die linke Seite des Schlüssel der Fig. 1 in Draufsicht,

Fig. 5

die Oberseite des Schlüssel der Fig. 1 in Draufsicht,

Fig. 6

die abgerollte Mantelfläche der rechten Schlüsselschafthälfte des Schlüssel der Fig. 1 mit der tieferen Steuernut,

Fig. 7

die abgerollte Mantelfläche der rechten Schlüsselschafthälfte des Schlüssel der Fig. 1 mit den beiden seichten Steuernuten,

Fig. 8

einen Längsschnitt durch ein Zylinderschloss,

Fig. 9

eine Explosionsdarstellung des Zylinderschlosses der Fig. 8 mit Gehäuse, Kernhülse, Sperrwelle, zwei verschiedenen ringförmigen Steuerelementen und einer Zwischenscheibe,

Fig. 10

einen Querschnitt durch das Zylinderschloss der Fig. 8 mit eingesetztem Schlüssel und einem ersten, ringförmigen Steuerelement, das mit seinen beiden Steuerorganen in die beiden seichten Steuernuten der rechten Schlüsselschafthälfte eingreift,

Fig. 11

einen Querschnitt durch das Zylinderschloss der Fig. 8 mit eingesetztem Schlüssel und in eine Sperrstellung verdrehter Kernhülse

Fig. 12

einen Querschnitt durch das Zylinderschloss der Fig. 8 mit eingesetztem Schlüssel, in die Freigabestellung verdrehter Kernhülse und einem zweiten, ringförmigen Steuerelement, das mit seinem Steuerorgan in die tiefe Steuernut der rechten Schlüsselschafthälfte eingreift, und

Fig. 13

einen Querschnitt durch das Zylinderschloss der Fig. 8 mit eingesetztem Schlüssel, in die Freigabestellung verdrehter Kernhülse und einer zwischen dem ersten und zweiten ringförmigen Steuerelement angeordneten, ebenfalls ringförmigen Zwischenscheibe, die in der Kernhülse drehfest gehalten ist und mit ihren nach innen abstehenden Fortsätzen in die beiden, einander gegenüberliegenden Längsnuten des Schlüsselschaftes eingreift.

The invention is explained in more detail below using exemplary embodiments with reference to the drawings. The drawings show:

Fig. 1

a first embodiment of a key according to the invention with a fully formed key shaft and two, on the outside of each containing a set of control grooves shaft halves in front view

Fig. 2

1 in an oblique view with the left half of the key shaft in front,

Fig. 3

the key of Fig. 1 in an oblique view with the front right key shaft half

Fig. 4

the left side of the key of Fig. 1 in plan view,

Fig. 5

the top of the key of FIG. 1 in plan view,

Fig. 6

the rolled outer surface of the right key shaft half of the key of FIG. 1 with the deeper control groove,

Fig. 7

the unrolled outer surface of the right half of the key shaft of the key of FIG. 1 with the two shallow control grooves,

Fig. 8

a longitudinal section through a cylinder lock,

Fig. 9

8 with the housing, core sleeve, locking shaft, two different ring-shaped control elements and an intermediate washer,

Fig. 10

8 with a key inserted and a first, ring-shaped control element which engages with its two control elements in the two shallow control grooves of the right half of the key shaft,

Fig. 11

a cross section through the cylinder lock of FIG. 8 with the key inserted and in a locked position twisted core sleeve

Fig. 12

a cross-section through the cylinder lock of FIG. 8 with the key inserted, in the release position twisted core sleeve and a second, annular control element which engages with its control member in the deep control groove of the right key shaft half, and

Fig. 13

a cross-section through the cylinder lock of Fig. 8 with the key inserted, in the release position twisted core sleeve and between the first and second annular control element arranged, also annular washer, which is held in the core sleeve rotatably and with its inwardly projecting extensions in the two , opposite longitudinal grooves of the key shaft engages.

In the case of the key 1 according to the invention, one that projects above the key cord 2 is essentially cylindrical key shaft 3 is provided, in the spatially curved Outside surface the partially overlapping and partially overlapping control grooves 4, 5, 6 at least one set of control grooves are embedded. The individual ones arranged at an angle to each other Sections of rectilinear control grooves 4, 5, 6 (Fig. 6, 7) mainly extend in the direction of the insertion direction of the key 1 and mostly only slightly deviate from it from. Each set of tax grooves comprises at least two shallower ones, largely for the most part parallel control grooves 4, 5 and a deeper, the two shallower control grooves 4, 5 partially overlapping tax groove 6.

According to an embodiment not shown in the drawing, the key can be one have hollow key shank, the two on their in the key insertion direction or in the longitudinal direction of the key shaft extending side edges connected half shells, in each of which a set of control grooves in the spatially curved outside of the respective Half-shell is embedded.

According to a further exemplary embodiment, a key with a tubular key shaft be provided in the cylindrical outer surface of the control grooves of at least one set of control grooves are let in.

The embodiment shown in the drawings sees a key 1 with a full trained key shaft 3, which has two mirror-symmetrically designed shaft halves, a set of control grooves is embedded in the outside of each.

In both exemplary embodiments, the two half-shells or the two can be located at the interface Shaft halves extending in the key insertion direction or in the longitudinal direction of the key shaft 3 Longitudinal ribs or grooves 7 may be provided which the key when inserted into the Guide the associated cylinder lock in the direction of insertion. At the top and / or bottom of the Key shaft 3 can have additional control elements, such as shallow depressions 8, 9, etc. be provided.

The control grooves 4, 5, 6 of each control groove set open in the area of the tip of the key 1 in a forwardly widening, towards the key tip open recess 10, which in the spatial curved outer surface of the key shaft is embedded. The two shallow tax grooves 4, 5 of the control groove set each provide at least three control points, which are opposite to the at least four control points of the deeper control groove 6 are arranged offset in the longitudinal direction of the key shaft 3 are. In the embodiment shown in FIGS. 6 and 7, the control grooves are the six control points of the two shallow control grooves 4, 5 (FIG. 7) compared to the six control points the deeper control groove 6 (Fig. 6) in the longitudinal direction of the key shaft 3 each offset arranged. For all control grooves 4, 5, 6 of the control groove set, the control stations can be assigned Control unit heights vary from control unit to control unit.

Fig. 8 shows a longitudinal section through a cylinder lock 11, in which in the cylindrical, outer Housing 12 is a cylindrical core sleeve 13 is arranged, which are arranged one behind the other in the longitudinal direction and first and second annular ones each separated by an annular washer 14 Controls 15, 16 contains. Each first, annular control element 15 carries two inwards protruding, first control elements 17, which are in the two shallow control grooves 4, 5 of a set of control grooves of the key shaft 3 intervene. Every second, annular control element 16 carries one projecting inside, second control member 18, which in the deeper control groove 6 of a control groove set of Key shaft 3 engages. The two ring-shaped control elements 15 and 16 point at their a slot groove 19, 20, which extends only over a circular sector, on both side surfaces on. The link grooves 19, 20 are the same size and in all annular control elements 15, 16 arranged in the same position. Reach into the slots 19, 20 of the control elements 15 and 16 the axially from the intermediate disks 14 arranged between the control elements 15 and 16 protruding stop pin 21. The washers 14 have a circumference projections 22 projecting outside, which engage in a recess 23 of the core sleeve 13 and the intermediate disks 14 connect to the core sleeve 13 in a rotationally fixed manner, so that the annular control elements 15, 16 with respect to the intermediate disks 14 only within one defined by the link grooves 19, 20 Angular range can be rotated, whereby the range of rotation of the key 1 is set.

The cylinder lock 11 also has at least one locking element 24, which in the case of FIG. 9 illustrated embodiment as a parallel to the longitudinal central axis of the cylinder lock, in a longitudinal slot 25 of the core sleeve 13 received locking shaft is formed, the corresponding Position of the control elements 15 and 16 in a release position (Fig. 12) for the rotation the core sleeve 13 can be brought relative to the cylinder housing 12.

The key shaft is preferably milled from one piece of material with both shaft halves. The The key is preferably a reversible key.

Claims (15)

1. Key (1) for cylinder locks, whereby the elongated key shaft (3) of the same may be equipped with at least one further control element, and with at least one set of at least three control grooves (4, 5, 6) extending substantially in the direction of the insertion of the key and at least partially overlapping each other on its outside, of which one control groove (6) is deeper than the other two substantially parallel control grooves (4, 5), characterised in that a substantially cylindrical key shaft (3) is envisaged, whose arced external surface incorporates the control grooves (4, 5, 6) of at least one control groove set extending substantially in the direction of the insertion of the key, whereby the same overlap at least in part.
2. Key according to Claim 1, characterised in that the control grooves (4, 5, 6) extending along the arced external surface of the key shaft (3) substantially in the direction of the insertion of the key are positioned within rear cuts unevenly distributed and differently formed across the length of same within the external surface of the key shaft (3).
3. Key according to Claim 1 or 2, characterised in that the control grooves (4, 5, 6) incorporate sections extending along the arced external surface of the key shaft (3) from which the sections located at the control points extend approximately in the direction of the insertion of the key, and in that the sections located between the control points extend in a diagonal direction.
4. Key according to at least one of the preceding Claims 1 to 3, characterised in that the key shaft (3) is hollow, and in that the same incorporates two half-circular bowls that are connected to one another at their side edges that extend in the direction of the insertion of the key, whereby the same are each equipped with a recessed control groove set upon their arced external surface.
5. Key according to Claim 4, characterised in that at least one further control element in the form of a longitudinal rib (7) extending in the direction of the insertion of the key is envisaged on the external side of the hollow key shaft (3).
6. Key according to Claim 4 or 5, characterised in that the hollow key shaft (3) takes a tubular form, and in that the cylindrical outside of the same incorporates two opposing longitudinal ribs or longitudinal grooves (7) along the connecting lines of the two half-circular bowls extending in the direction of the insertion of the key.
7. Key according to at least one of the preceding Claims 1 to 3, characterised in that the key shaft (3) is solid, and in that the same incorporates two shaft halves that in turn incorporate one set each of control grooves.
8. Key according to Claim 7, characterised in that at least one further control element in the form of a longitudinal rib or longitudinal groove (7) is envisaged upon the outside of the solid key shaft (3) extending in the direction of the insertion of the key.
9. Key according to Claim 7 or 8, characterised in that the solid key shaft (3) incorporates two opposing longitudinal ribs or longitudinal grooves (7) on its cylindrical outside, whereby the same extend along the connecting lines of the two shaft halves in the direction of the insertion of the key.
10. Key according to at least one of the preceding Claims 1 to 9, characterised in that the deeper control groove (6) that forms a part of each of the control groove sets and that extends along the arced external surface of the key shaft (3) incorporates four possible control adjustment heights, and in that the shallow control grooves (4, 5) that extend along the arced external surface of the key shaft (3) each incorporate three possible control adjustment heights.
11. Key according to at least one of the preceding Claims 1 to 10, characterised in that the control grooves (4, 5, 6) of each control groove set open out into a recess (10) that widens in the direction of the key tip and that is open at the key tip, and that is recessed into the arced external surface of the key shaft (3).
12. Cylinder lock (11) for a key (1) according to at least one of the preceding Claims 1 to 11, characterised in that at least one first annular control element (15) with a first control organ (17) projecting towards the inside and engaging a shallow control groove (4, 5) of the key shaft (3) surrounding the cylindrical key shaft (3) along the key channel is envisaged, and in that at least one second annular control element (16) with a second control organ (18) projecting towards the inside and engaging a deeper control groove (6) surrounding the key shaft (3) is envisaged, and in that at least one locking element (24) is also envisaged, whereby the same can be positioned in a releasing position for the rotating of the cylinder core (13) in relation to the cylinder housing (12) in the relevant position of the control elements (15,16).
13. Cylinder lock according to Claim 12, characterised in that the annular first control elements (15) each incorporate two control organs (17) projecting towards the inside and engaging the shallow control grooves (4, 5) of a control groove set
14. Cylinder lock according to Claim 12 or 13, characterised in that the first and second annular control elements (15, 16) are alternately positioned along the key channel.
15. Cylinder lock according to at least one of the preceding Claims 12 to 14, characterised in that an annular interim disc (14) is rotation resistantly held within the core sleeve (13) along the key channel between adjacent annular control elements (15, 16), from which axial abutment bolts (21) extend on both sides within their relevant background grooves (19, 20) of the two facing control elements (15, 16) that extend only across a circular section, and that engage the two control elements (15, 16).

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