EP1098055A2 - Key for a lock - Google Patents

Abstract

The key has a key head (1) with an interactively programmable chip (3) and an electrically conducting loop (4) and a key shaft (2) for insertion into a lock cylinder shaft (14). The chip has an electronic identification code and the shaft has a pair of protruding electrical contacts (6) connected to the interactively programmable chip in the key head. The code can be fixed or randomly altered per opening.

Description

This invention relates to a key for a lock in the preamble of claim 1 Art.

The invention particularly relates to a key of this type that is versatile can be used because it has a shaft of a conventional type in which a conventional mechanical lock secret in the form of notches, incisions and depressions can be trained, and both as exclusively electronic Keys act and a lock that is not a conventional mechanical lock has, but is provided with a mechanical blocking, which by electrical / electronic means is controlled, as well as can operate a lock, which is a conventional mechanical lock or a combination of both Has possibilities.

The problem of incompatibility arises in the field of the present invention between the keys, which correspond to locks of a conventional type (where a mechanical lock secret based on sets of tumbler pins and lock pins are present between the rotor and the stator housing of the locking cylinder) and the keys, designed to operate electronic locks only are in which no conventional combination sets of tumblers and Counter-hold pins are available, but only an electronic coding, which controls an electromechanical blocking of the rotation of the rotor. If a part of the conventional mechanical locks of a building, which with the same key operated by modern, exclusively electronic Locks with more or less performance features are replaced it is necessary to use two different keys become.

On the other hand, for keys that have electronic identification devices, one type is known, the opposite retractable contact buttons has that against respective springs inside the material of a flat Neck approach are guided and attached to a key that is outside the Lock cylinder between the end of the key shaft inserted into the rotor and can be placed on the head of the key. This retractable Contact buttons come with respective semi-circular independent ones Tracks in contact in a tubular cylindrical extension of the front of the rotor are arranged. On the one hand, this solution requires a considerable amount Increased complexity in the construction of the rotor and on the other hand, the semicircular paths are completely under the influence of environmental influences exposed. Furthermore, the attachment of the retractable requires Contact buttons against the action of a spring take up a space of their arrangement limited to the edges of the flat neck section, the arrangement on the main surfaces of which, however, are not possible.

The invention has for its object a key of the aforementioned Art to create that can be used in many ways with a simple and space-saving construction and is easy to code without complicated constructions by it Key operated lock cylinder are required.

This object is achieved by the features specified in claim 1.

Advantageous refinements and developments of the invention result from the subclaims.

The key according to the invention has a key head which is interactive contains programmable chip and an electrical conductor loop, the interactive programmable chip has an electronic identification code, which is fixed during the entire opening process or according to a sequence or a randomness that can be modified by means of a data processing program is trained. The electrical conductor loop is with the interactive programmable chip connected, extends inside the outline of the Key head and follow this outline. The key still has one Key shaft on, in the key channel of a respective lock cylinder is insertable and with the key head over a neck section outside the Lock cylinder is connected, the key shaft having a cross section with any has a form known per se. On the back and in front of the outside Neck section jumps out of the key shaft a pair of opposite electrical terminals or contact buttons that interact with the interactive programmable chip of the key head are connected. The key shaft contains at least one recess that is reciprocal to the tip of a radial Locking pin of the lock cylinder rotor is formed, with a respective The counter pin is in contact with the spring preload in the stator housing the lock cylinder is attached. This deepening is in itself The central strip of the key shaft, which extends in the longitudinal direction, is worked into a shape, compatible with other incisions that may be provided is used to determine a conventional mechanical lock secret of the castle.

This new key can act as an exclusively electronic key, where the interactive programmable chip and the electrical conductor loop the Have task with the electronics of the locking cylinder to recognize the coding to interact, thereby releasing the rotary lock of the rotor becomes. In the invention, any of the opposite electrical ones Contact buttons with a radial electrical contact of the rotor of the Lock cylinder at a distance from the bottom of this key channel of this rotor come into contact, which is equal to the distance between this electrical Contact button and the tip of the key shaft. The best Performance shadows of this exclusively electronic key are achieved, if this interaction between the key and the cylinder is not only in the inserted position of the key, but continuously during the total rotational movement of the key by means of a device that the Maintaining the electrical connection ensures, for example by a device in which this radial electrical contact in turn in Is in contact with an annular electrically conductive track that has an inner portion surrounds the rotor firmly connected, this annular track on it Is in contact with an electrical current collector on the outside is installed under spring preload in the stator housing of the locking cylinder.

This new key can still be used like a conventional key the engraving of incisions of a conventional mechanical lock combination work in his shaft.

The versatility of the novel key both as exclusive electronic as well as conventional mechanical key enables its use for exclusively electronic actuation with an exclusively electronic locking cylinder and at the same time for actuating other locks of the same user, which is a conventional mechanical lap combination exhibit. This enables users to use electronic keys as such already now to make available that do not yet have electronic locking cylinders , but could acquire them in the future and in the meantime use this key as a conventional mechanical key, or they can be made available to users who have electronic locking cylinders have, however, not yet all of the features of a modern electronic key, which will be modern electronic in the future Want to acquire lock cylinders that are prepared for these new features are.

The new arrangement of the electrical contact buttons in front of the outer neck The key is with the usual external configurations of the lock cylinder rotor compatible, in which only the radial seat for the radial mentioned electrical contact must be formed. This solution also favors the arrangement of an annular conductive track behind the front edge of the rotor, this conductive track being covered from and by the outside is inaccessible and protected against environmental conditions, the Conductor a conductive element between the radial electrical contact and an electrical pantograph that forms with the electronics of the lock cylinder connected is.

In one embodiment, the respective electrical contact buttons are on respective ones Sides of a rigid core, which is a continuation of the rear end of the Key shaft is arranged.

In another embodiment, these electrical contact buttons are at the end attached by respective elastic projections, which are anchored to a rigid core are in a suitable position in the outer neck of the key Distance from the rear end of the key shaft.

Each of these solutions has a significantly reduced space requirement, so that the arrangement of the contact buttons both on the edges and on the main surfaces a shaft of a "flax" key is made possible. This results in a larger one Number of alternative embodiments of the keys according to the invention.

The arrangement of the recesses worked into the median of the key shaft to operate respective sets of tumbler and counter tumbler pins the conventional type provides a protective device against attempts to break in from the front of the castle by inserting objects in its key channel.

The new design of the key results in its complete Compatibility with any known type of key shaft shape as well with any known types of lock cylinder.

These and other features and advantages of the invention will be apparent from the detailed Explanation, the following based on the attached graphs he follows.

Die Figur 1 zeigt einen Schlüssel gemäß der Erfindung bei seitlicher Betrachtung, wobei das Innere des Kopfes (1) des Schlüssels und ein Teil des Schaftes (2) des Schlüssels gezeigt ist.

Die Figur 2 zeigt im Längsschnitt einen Schlüssel gemäß der Erfindung, der betriebsmäßig in einen Rotor (12) eines Schließzylinders (11) eingesteckt ist, und zwar entsprechend einer Ausführungsform mit nicht zurückziehbaren elektrischen Kontaktknöpfen (6).

Die Figur 3 ist eine Teilansicht der Figur 2, zeigt jedoch die Ausführungsform mit elektrischen Kontaktknöpfen, die schwimmend und zurückziehbar angeordnet sind.

Die Figuren 4 bis 11 zeigen einige abgeänderte Ausführungsformen von Schlüsseln gemäß der Erfindung.

Die Figuren 12 bis 19 zeigen jeweilige Querschnittsansichten des Schaftes des Schlüssels (2) entsprechend den Figuren 4 bis 11.

Die Figuren 20 bis 22 zeigen einige perspektivische Ansichten von Ausführungsformen des Schließzylinders (11), die mit einem Schlüssel gemäß der Erfindung betätigt werden.

For a better understanding of the nature of the present invention, a preferred commercial embodiment is shown in the accompanying drawings, which has an illustrative and non-limiting property only.

FIG. 1 shows a key according to the invention when viewed from the side, the interior of the head (1) of the key and part of the shaft (2) of the key being shown.

Figure 2 shows in longitudinal section a key according to the invention, which is operationally inserted into a rotor (12) of a lock cylinder (11), according to an embodiment with non-retractable electrical contact buttons (6).

Figure 3 is a partial view of Figure 2, but shows the embodiment with electrical contact buttons, which are arranged floating and retractable.

Figures 4 to 11 show some modified embodiments of keys according to the invention.

FIGS. 12 to 19 show respective cross-sectional views of the shaft of the key (2) corresponding to FIGS. 4 to 11.

Figures 20 to 22 show some perspective views of embodiments of the lock cylinder (11) which are actuated with a key according to the invention.

1. -

Schlüsselkopf

2.-

Schlüsselschaft

3.-

Interaktiver programmierbarer Chip

4.-

Elektrische Leiterschleife

5.

Halsansatz des Schlüssels

6.-

Elektrische Kontaktknöpfe im Schlüsselschaft (2)

7.-

Vertiefungen des Schlüsselschaftes (2)

8.-

Kombinations-Einschnitte im Schlüsselschaft (2)

9.

Einziehbarer Stift im Schlüsselschaft (2)

10.-

Vorspannfeder des zurückziehbaren Stiftes (9)

11.-

Schließzylinder

12.-

Rotor des Schließzylinders (11)

13.-

Statorgehäuse des Schließzylinders (11)

14.-

Schlüsselkanal im Rotor (12)

15.-

Radialer Zuhaltungsstift im Rotor (12)

16.-

Gegenzuhaltungsstift im Statorgehäuse (13)

17.-

Radialer elektrischer Kontakt im Rotor (12)

18.-

Vorspannfeder des Kontaktes (17)

19.-

Ringförmige elektrische Leiterbahn

20.-

Bewegliche Stifte

21.-

Elektrischer Stromabnehmer im Statorgehäuse (13)

22.-

Starrer Kern des Schlüsselschaftes (2)

23.-

Elastische Vorsprünge

The following reference numbers are given in these figures:

1. -

Key head

2.-

Key shaft

3.-

Interactive programmable chip

4.-

Electrical conductor loop

5.

Neck of the key

6.-

Electrical contact buttons in the key shaft (2)

7.-

Key Shaft Deepening (2)

8th.-

Combination cuts in the key shaft (2)

9.

Retractable pin in the key shaft (2)

10.-

Retractable pin bias spring (9)

11.-

Locking cylinder

12.-

Lock cylinder rotor (11)

13.-

Stator housing of the locking cylinder (11)

14.-

Key channel in the rotor (12)

15.-

Radial tumbler pin in the rotor (12)

16.-

Locking pin in the stator housing (13)

17.-

Radial electrical contact in the rotor (12)

18.-

Preload spring of the contact (17)

19.-

Annular electrical conductor track

20.-

Movable pens

21.-

Electrical current collector in the stator housing (13)

22.-

Rigid core of the key shaft (2)

23.-

Elastic protrusions

In the accompanying drawings preferred embodiments of a new one Key for a lock with either exclusively electronic and / or usual mechanical actuation shown. The key points in particular from Figures 1 and 2 recognizable way a key head (1), the one contains an interactive, programmable chip (3) and an electrical conductor loop (4), the interactive programmable chip (3) being an electronic one Identification code that is fixed with each opening process or according to a sequence or a randomness can be modified by means of a data processing program is trained. The electrical conductor loop (4) is interactive programmable chip (3) connected and extends under customization the outline of the key head (1) inside this key head.

The key also has a key shaft (2) which is in the key channel (14) of a respective locking cylinder (11) can be used, and with the Key head (1) via an outer neck (5) to this locking cylinder (11) is connected, the key shaft (2) having a cross section with any has a form known per se. In the back of the key shaft and in front of the outer neck (5) jumps towards this key shaft (2) a pair of opposite electrical contact buttons (6) in front, which with the interactive programmable chip (3) of the key head (1) are connected.

The key shaft (2) has at least one recess (7) that is reciprocal to the Tip of a radial tumbler pin (15) of the rotor (12) of the locking cylinder (11) is cut into contact with a respective counter-locking pin (16) is under spring tension in the stator housing (13) of the locking cylinder (11) is attached. The recess (7) is in a longitudinal central stripe of the key shaft (2) incorporated in a form that with others any provided recesses or incisions (8) is compatible, the to establish a usual mechanical lock secret of the lock are determined.

As shown in Figure 2, any of the opposite electrical ones Contact buttons (6) in contact with a radial electrical contact (17) of the rotor (12) of the lock cylinder (11) occur at a distance from the Bottom of the key channel (14) of this rotor, which is equal to that between the electrical contact button (6) and the tip of the key shaft (2) lies. This radial electrical contact (17) is in turn in constant Contact with an electrical annular conductor track (19) which has an inner portion of the rotor (12) firmly surrounds, said annular conductor track (19) on it On the outside in contact with an electrical current collector (21) is under spring tension in the stator housing (13) of the lock cylinder (11) installed and connected to the electronic circuit of the lock cylinder is.

FIG. 2 shows a preferred embodiment in which the electrical Contact buttons (6) rest on one side of a rigid core (22), which in Continuation of the rear end of the key shaft (2) is arranged. This Solution does not allow any retraction of the electrical contact buttons, so that it is used in combination with a radial electrical contact (17) which is movable in the rotor (12) against the action of a biasing spring (18) is arranged to make permanent contact between the two Elements.

An alternative embodiment is shown in Figure 3, in which this electrical Contact buttons (6) at the end of respective elastic projections or spring leaves (23) are arranged, which are anchored to a rigid core (22), the in the outer neck (5) of the key at a suitable distance from the rear end of the key shaft (2). Are with this solution the electrical contact buttons (6) can be elastically retracted or pressed in for this purpose they have a protruding convex shape and an end section of the spring leaves 23), such that the electrical radial contact (17) the preload spring (18) is not required to ensure permanent contact.

The reduced space requirement of the electrical contact buttons (6) enables them any arrangement in the vertical plane, which is the longitudinal axis of the key channel (14) of the rotor (12) with respect to a horizontal key channel (14), or in the horizontal plane that the longitudinal axis of the key channel (14) of the Contains rotor (12) with respect to a horizontal key channel (14). As examples for one case or the other, Figures 4 to 11 and the actual Figures 1 to 3 are considered. Considering one case or another is a function of whether the key is a "flat" shaft (Figures 1 to 6) or has a "toothed" shaft (Figures 7 to 9), in the first case the Key channel (14) is usually horizontal, while in the second case in general is vertical. For keys with "flat" or "flat" shaft (2) two longitudinal narrow sides or edges and two longitudinal ones Main areas available, in which, if necessary, the wells mentioned Notches (8) of the usual mechanical lock secret (not shown) cut are. Keys with a "toothed" shaft (2) have a longitudinal one Edge present, in which the incisions (8) of the usual mechanical Castle secret are incorporated.

The invention is based on keys with a "flat" shaft (FIGS. 1 to 6 and 12 to 14), with "toothed" shaft (Figures 7 to 9 and 15 to 17), with "cylindrical Shaft "(Figures 10 and 11, 18 and 19) and generally with other known shapes the cross section of the key shaft (2) compatible.

Furthermore, the invention is compatible with various copy security systems, which are formed in different shapes in the shaft of the key (2). FIGS. 5 and 13 show a "flat" key shadow (2), the movable one Has pins (20) in an oblique position, in their axial direction are freely movable. Figures 6 and 14 show a "flat" key shank (2) which has retractable pins (19) which are opposed to each other Biasing by respective springs (2) in a respective one of the edges of the key shaft (2) are arranged. FIGS. 9 and 17 show a "toothed" Key shaft (2) shown, which, similar to the previous case, a retractable Has pin (9) which is spring-loaded by a spring (10) in the edge or narrow side of the key shaft (2) is arranged, the any incisions (8) of the usual mechanical lock secret opposite the castle. There are many other security devices known for the key shaft that is compatible with the new key are.

For the sake of clarity, the "flat" key shafts shown have been used (2) omitting the recesses (8) of the usual mechanical lock secret, which are nevertheless present in the "toothed" key shafts (2) in which they do not affect the clarity of the drawing.

The invention is also compatible with various known locking cylinders (11). 20 to 22 are some simple types (only for access from the outside), although they are also double lock cylinders (for access from the outside and inside).

The conductor loop (4) enables inductive coupling to the chip (3) around it to program or to enable another signal or voltage transmission.

Claims (13)

Key for a lock with a locking cylinder, characterized by a key head (1) which contains an interactive programmable chip (3) and an electrical conductor loop (4), the interactive programmable chip (3) having an electronic identification code which is fixed during each opening process or according to a sequence or one Randomness can be modified, which is formed by means of a data processing program, the electrical conductor loop (4) being connected to the interactive programmable chip (3) and extending inside the key head (1) and following its outline; and a key shaft (2) which can be inserted into the key channel (14) of a respective locking cylinder (1) and which is connected to the key head (1) via an outer neck extension (5) to the locking cylinder (11), the key shaft ( 2) has a cross section with any known shape, and from this key shaft (2) at the rear part and at the front end of the outer neck extension (5) projects a pair of opposite electrical contact buttons (6), which interact with the programmable chip (3) of the key head (1) are connected. Key according to claim 1, characterized in
that the key shaft (2) has at least one recess (7) which is designed to be reciprocal to the tip of a radial tumbler pin (15) of the rotor (12) of the locking cylinder (11), which is in contact with a respective tumbler pin (16), which is fastened under spring tension in the stator housing (13) of the locking cylinder (11), the recess (7) being incorporated in a longitudinally extending central strip of the key shaft (2) in a shape which is compatible with other incisions (8) which may be provided compatible, which are intended for determining a common mechanical lock secret of the lock. Key according to claim 1 or 2,
characterized in that one of the opposite electrical contact buttons (6) can be brought into contact with a radial electrical contact (17) of the rotor (12) of the locking cylinder (11) at a distance from the bottom of the key channel (14) of this rotor (12), which is equal to the distance between this electrical contact button (6) and the tip of the key shaft (2), that the radial electrical contact (17) in turn is in permanent contact with an annular electrically conductive track (19) which is firmly connected surrounds an inner portion of the rotor (12), and that this annular track (19) in turn is in contact with an electrical current collector (21) on its outside, which is arranged under spring tension in the stator housing (13) of the locking cylinder (11). Key according to one of the preceding claims,
characterized in that the electrical contact buttons (6) rest on respective sides of a rigid core (22) which is arranged in continuation of the rear end of the key shaft (2). Key according to claim 1, 2 or 3, characterized in that
that the electrical contact buttons (6) are arranged at the end of respective elastic projections (23) which are anchored to a rigid core (22) which is located in the outer hat portion (5) of the key at a suitable distance from the rear end of the key shaft (2) located. Key according to one of the preceding claims,
characterized in that the electrical contact buttons (6) are arranged in the vertical plane which contains the longitudinal axis of the key channel (14) of the rotor (12) with respect to a horizontal key channel (14). Key according to one of claims 1 to 5,
characterized in that the electrical contact buttons (6) are arranged in a horizontal plane which contains the longitudinal axis of the key channel (14) of the rotor (12) with respect to a horizontal key channel (14). Key according to one of claims 1 to 7, characterized in that
that the key shaft (2) is a flat key, in which there are two smaller side surfaces or edges and two larger longitudinal sides, in which the lock secret is formed in the form of incisions (8). Key according to one of claims 1 to 7, characterized in that
that the key shaft (2) is of the type which has a longitudinal edge on which incisions (8) of the usual mechanical lock secret are formed. Key according to one of claims 1 to 7, characterized in that
that the key shaft (2) has a cylindrical cross section. Key according to claim 8, characterized in
that the key shaft (2) contains movable pins (20) in an oblique arrangement which are freely displaceable in their axial direction. Key according to claim 8, characterized in
that the key shaft (2) contains retractable pins (9) which are arranged opposite one another and under the bias of respective springs (10), one in each of the edges of the key shaft (2). Key according to claim 9, characterized in
that the key shaft (2) contains a retractable pin (9) which is arranged against a spring (10) in that edge of the key shaft (2) which is opposite that in which any incisions (8) of the usual mechanical lock secret are arranged .

Images