EP4119749A1 - Key and lock system - Google Patents

Abstract

The invention relates to a key (10) for actuating a lock cylinder (100), with a key bow (12) and a key shank (16) extending from the key bow (12), with a key shank (16) extending along a channel axis (22 ) is formed through the key shank (16) extending channel (24), wherein the channel (24) is formed as a stepped bore, the channel axis (22) with the central longitudinal plane (26) of the key shank (16) at an angle of less than 90 ° and that in the channel (24) there is an actuating pin (28) that can be displaced along the channel (24) for actuating a lateral tumbler (120) of the lock cylinder (100).A locking system (100) with such a key (10) and an associated lock cylinder (102) is indicated.

Description

The invention relates to a key for actuating a lock cylinder, with a key bow and a key shank extending from the key bow according to the preamble of claim 1. The invention also relates to a locking system with such a key and an associated lock cylinder according to the independent claim.

Keys and locking systems of the type mentioned are known from the prior art, for example FR 2 492 872 A1 . Therein a key is described, in the key shank a channel is formed, which extends perpendicular to the median longitudinal plane of the key shank and in which an actuating element is movably mounted. When the key shank is inserted into the locking channel, the actuating element can be displaced along the channel via a button element arranged in the cylinder core, so that a conventional tumbler arranged in a waisted area of the lock cylinder can be actuated. Such a design makes it difficult to use simple copying methods. However, it is problematic that such key profiles can also be identified and reproduced with copying processes that are now available, e.g. from 3D scanners and 3D printers. This affects security.

The invention is based on the object of enabling comparatively safe and reliable operation in a key or a locking system with simple structural means.

The key used to actuate a lock cylinder (lock cylinder key) has a key bow and a key shank extending away from the key bow. A channel extending through the key shank along a channel axis is formed in the key shank. The channel is designed as a stepped bore, in particular as a precision stepped bore, with the axis of the channel forming an angle of less than 90° with the central longitudinal plane of the key shank. In the canal is a along the canal displaceable actuating pin arranged for actuating a lateral tumbler of the lock cylinder.

The proposed configuration of the channel forms a comparatively compact undercut which, in addition to the actuating pin displaceable in the channel, can only be reconstructed with great effort, if at all, using modern copying methods. On the other hand, the stability of the key shank is only negligibly affected by the stepped bore. This favors security.

In concrete terms, the channel for the confirmation pin can be arranged in the half of the key shank facing away from the bow of the key (front half of the key shank), in particular in the front third of the key shank. As a result, a (lateral) tumbler corresponding to the actuating pin can be arranged at or near the inner end of the key channel of an associated lock cylinder. This makes manipulation more difficult.

In concrete terms, the channel for the confirmation pin can be adapted to the shape and/or the dimensions of the confirmation pin, so that the actuating pin can be moved along the channel.

The key shank extends in particular along an axial direction away from the key bow. In particular, the key has narrow sides that run along are oriented to the thickness/strength of the key. In particular, there is in each case a side surface of the key or of the key shank (key shank side) between the narrow sides.

The key for actuating a lock cylinder (lock cylinder key) can in particular be a profile cylinder key. The associated lock cylinder can be designed in particular as a profile cylinder. "Related" means that a key is matingly insertable into a lock cylinder such that the lock cylinder can be operated by the key.

The profile cylinder key can be designed as a bit key ("conventional profile cylinder key"). A bit key can only be inserted into the key channel of an associated lock cylinder in one orientation.

In a preferred embodiment, the channel can be the only channel extending through the key shank and the actuating pin can be the only confirmation pin arranged in the key shank. This contributes to a structurally simple design with as few components as possible.

Advantageously, the key shank, at least in sections, be profiled such that a Indentation on a key shank side is opposite a bulge on the other key shank side. This contributes to a comparatively stable design of the key shank, since material weaknesses caused by an indentation on one side of the key shank are largely compensated for by bulges on the other side of the key shank.

In particular, several indentations and bulges can be oriented to one another in such a way that the key shank has an M-shaped profile section ("M-profile"). As a result, greater stability can be achieved than in the case of profiles known in the prior art.

The key shank can expediently have an asymmetrical cross section. This allows a special key geometry to be created. In addition, the rigidity of the key shank can thus be increased.

In the context of a preferred embodiment, the key shank can be dimensioned in such a way that six profile incisions can be formed in each of the key shank sides. Thus, a total of twelve profile incisions can be formed on the key shank, preferably six on each side of the key shank. A comparatively large variety of key secrets can be provided in this way.

Advantageously, a longitudinal groove can be formed at least on one side of the key shank, which extends (axially) from the channel to the free end of the key shank (key shank tip). This enables the key to be easily inserted into a key channel, particularly when the stop element on the cylinder side is stationary in relation to the key channel or the cylinder core of the lock cylinder and/or protrudes into the key channel. The longitudinal groove can then serve as access for the projecting stop element on the cylinder side.

Expediently, the channel can be open and reduced in cross-section at a first channel end, with the actuating pin having an actuating section at a first pin end which protrudes at least partially from the key shank when the actuating pin is in contact with the first channel end. The actuating pin is thus secured at the first end of the channel against falling out of the channel. In addition, the actuation section of the actuation pin can actuate a lateral tumbler, in particular a locking pin (core pin) of the lateral tumbler.

Within the scope of a preferred embodiment, the channel at its first channel end and the actuating pin at its first pin end can be designed to be at least partially, preferably completely, complementary to one another. In other words, at the first end of the channel, the inner contour of the channel and the outer contour of the actuating pin correspond to each other. Thus, the actuating pin can lie against the first channel end of the channel over a large area. The cross sections of the channel and the actuating pin at the first end change in particular in the same way.

Advantageously, starting from the first end into the interior of the key shank, the channel can have a first channel section with a first cross section, in particular a first inner diameter, a second channel section with a second cross section, in particular a second inner diameter, and a third channel section with a third cross section, in particular a third inner diameter. Thus, there are several channel sections with different cross sections. If the second cross section is larger than the first cross section and the third cross section is larger than the second cross section, the weakening of the material of the key shank decreases towards the first end. This reduces any notch effect that may occur.

A connecting section can expediently be arranged between the first channel section and the second channel section, in which the channel cross section increases continuously, preferably conically, from the first channel section to the second channel section. This creates a comparatively large contact surface for the confirmation pin.

A shoulder can preferably be formed between the second channel section and the third channel section, in in which the channel cross-section increases from the second channel section to the third channel section. Precise guidance for the actuating pin can thus be achieved through the second channel section, with the shoulder creating a comparatively large contact surface for the actuating pin.

In the context of a preferred embodiment, the channel can be designed to be open at a second channel end and have a reduced cross section. Thus, a safeguard against falling out of the actuating pin is created. For this purpose, the edge of the channel at the second end of the channel can be shaped, for example compressed, in particular after the actuating pin has been inserted into the channel, such that the actuating pin is secured against falling out.

The object mentioned at the outset is also achieved by a locking system having the features of the independent claim.

The locking system has a key with one or more of the above aspects and an associated lock cylinder. The lock cylinder has a lateral tumbler for actuation by the displaceable confirmation pin of the key and a stop element on or in its keyway. When the key is inserted into the key channel, the actuating pin comes into contact with the stop element and is thus displaced in the channel of the key shank, which in turn moves the lateral guard locking to the release position.

With regard to the advantages that can be achieved in this way, reference is made to the relevant statements on the key.

In the context of a preferred embodiment, the lateral tumbler can be arranged in the diameter area of the cylinder housing. This creates a lateral tumbler with simple design means.

Advantageously, the stop element can be designed as a pin arranged orthogonally to the central longitudinal plane of the key channel in the cylinder core.
This creates a structurally simple and stable stop element. The stop element or the pin is in particular fixedly arranged in the cylinder core (pin cannot be displaced in the cylinder core). The free end (front end) of the pin can protrude into the keyway. The longitudinal groove formed in the key shank can correspond to the free end of the pin in such a way that the key shank can be inserted into the key channel.

The lateral tumbler can expediently have a housing pin and a locking pin, with the actuating pin acting on the housing pin via the locking pin when the key shank is inserted into the key channel. Thus, the locking pin can be actuated via the actuating pin in such a way that the parting plane of The housing pin and locking pin are located on the outer surface of the cylinder core, ie on the interface between the cylinder core and the lock cylinder housing. The housing pin can be arranged displaceably in the diameter area of the housing and/or be spring-loaded by means of a spring, in particular a compression spring. The locking pin can be slidably arranged in the cylinder core and/or not be spring-loaded. In addition, a press-in stopper can be provided, which closes an opening for lateral locking in the diameter area of the housing. The spring, in particular a compression spring, can be arranged between the press-in plug and the housing pin.

The central longitudinal axis of the locking pin and the central longitudinal axis of the actuating pin can preferably enclose an angle with one another. The central longitudinal axis of the actuating pin and the central longitudinal axis of the stop element (pin) can also form an angle with one another. This contributes to a comparatively compact arrangement of the components. The actuating pin acts as a deflection pin, which deflects a force applied to the actuating pin by the stop element (pin) onto the locking pin.

Irrespective of this, it is conceivable that the central longitudinal axis of the housing pin and the central longitudinal axis of the locking pin enclose an angle with one another. This also favors a compact arrangement of the components.

The measures discussed above with reference to the key and/or the measures explained below can also serve to further refine the locking system.

Fig.1

eine Ausführung des Schlüssels in einer perspektivischen Ansicht (Figur 1a), einer Seitenansicht (Figur 1b) und einer vergrößerten Teilansicht (Figur 1c);

Fig.2

den Schlüssel aus Figur 1 in einer weiteren Seitenansicht (Figur 2a), einer Schnittansicht (Figur 2b) und einem vergrößerten Teilschnitt (Figur 2c);

Fig.3

die Kontur des Schlüsselschafts des Schlüssels in einer Schnittansicht; und

Fig.4

eine Ausführung des Schließsystems mit Schlüssel und zugehörigem Schließzylinder in einer Seitenansicht (Figur 4a), einer Schnittansicht (Figur 4b) und einem vergrößerten Teilschnitt (Figur 4c).

The invention is explained in more detail below with reference to the figures, in which identical or functionally identical elements are provided with identical reference symbols, but only once if necessary. Show it:

Fig.1

an embodiment of the key in a perspective view ( Figure 1a ), a side view ( Figure 1b ) and an enlarged partial view ( Figure 1c );

Fig.2

the key out figure 1 in another side view ( Figure 2a ), a sectional view ( Figure 2b ) and an enlarged partial section ( Figure 2c );

Fig.3

the contour of the key shank of the key in a sectional view; and

Fig.4

an embodiment of the locking system with key and associated locking cylinder in a side view ( Figure 4a ), a sectional view ( Figure 4b ) and an enlarged partial section ( Figure 4c ).

the Figures 1 to 3 shows an embodiment of a key (lock cylinder key), the total with indicated by reference numeral 10. In the example, the key 10 is designed as a "conventional profile cylinder key" (bit key).

The key 10 has a key bow 12 and a key shank 16 extending away from the key bow 12 in an axial direction 14 (cf. Figure 1a and 1b ). The key shank 16 has a half 18 (front half 18) facing away axially from the key bow 12 and a half 20 (rear half 20) facing the key bow 12.

A channel 24 extending through the key shank 16 along a channel axis 22 is formed in the key shank 16 . In the example, the channel 24 is located in the half 18 of the key shank 16 that faces away axially from the key bow 12. The channel 24 is designed as a stepped bore. The channel axis 22 encloses an angle of less than 90° with the central longitudinal plane 26 of the key shank 16 (cf. Figure 2b and 2c ). A confirmation pin 28 that can be displaced along the channel is arranged in the channel 24 to actuate a lateral tumbler 120 of the lock cylinder 102 . The channel 24 and the actuating pin 28 are adapted in shape and/or in their dimensions to one another such that the actuating pin 28 can be moved along the channel 24 .

In the example, channel 24 is the only one that extends through key shank 16 Channel. In the present case, the actuating pin 28 represents the only actuating pin arranged in the key shank 16.

In the example, the key shank 16 is profiled at least in sections in such a way that an indentation 30 on one side 32 of the key shank is opposite a bulge 34 on the other side 36 of the key shank (cf. figure 3 ). In the example, several indentations 30 and bulges 34 are oriented to one another in such a way that the key shank 16 has an M-shaped profile section 40 .

In the example, the key shank 16 has an asymmetrical cross section. In the example, the key shank 16 is dimensioned such that six profile incisions can be formed in each of the key shank sides 32, 36 (not shown).

In the example, a longitudinal groove 44 is formed on a key shank side 32, which extends axially from the channel 24 to the free end 45 of the key shank 16 (key shank tip) (cf. Figure 1a and 1b ). The longitudinal groove 44 can serve as access for a stop element arranged in the associated lock cylinder (described below).

The channel 24 is open at a first channel end 46 and reduced in cross section, wherein the Actuating pin 28 has an actuating section 50 at a first pin end 48, which protrudes at least partially from key shank 16 when the actuating pin is in contact with first channel end 46 (cf. Figure 2c ). The actuating pin 28 is thus secured against falling out of the channel 24 .

As already indicated above, the channel 24 at its first channel end 46 and the confirmation pin 28 at its first pin end 48 in the example are designed to be at least partially complementary to one another. As a result, the confirmation pin 28 can bear against the first channel end 46 over a large area.

In the example, the channel 24 has, starting from the first channel end 46 into the interior of the key shank 16, a first channel section 52 with a first inner diameter, a second channel section 54 with a second inner diameter and a third channel section 56 with a third inner diameter (cf. Figure 2c ). In the example, the second inner diameter is larger than the first inner diameter and the third inner diameter is larger than the second inner diameter.

A connecting section 53 is arranged between the first channel section 52 and the second channel section 54, in which the channel cross section increases continuously, preferably conically, from the first channel section 52 to the second channel section 54 (cf. Figure 2c ). Between the second channel section 54 and the third Channel section 56 has a step 55 in which the channel cross section increases from the second channel section 54 to the third channel section 56 .

The channel 24 is open at a second channel end 58 and is reduced in cross-section. Thus, a safeguard against the actuating pin 28 falling out is created here as well. For this purpose, the edge of the channel 24 at the second channel end 58 can be reshaped, for example compressed, in such a way that the actuating pin 28 is secured against falling out.

figure 4 shows a locking system, is denoted by the reference numeral 100 in its entirety. The locking system 100 has a key 10 as described above and an associated lock cylinder 102 . The lock cylinder 102 is designed as a “conventional profile cylinder” for receiving a bit key (“conventional profile cylinder key”).

The lock cylinder 102 has a cylinder housing 104 which has a diameter area 106 and a waisted area 108 . The cylinder housing 104 can be designed in one piece or modularly (different lengths by means of a cylinder housing 104 formed from several elements of different lengths).

A core passage 110 for receiving a rotatable cylinder core 112 is formed in the cylinder housing 104 . The cylinder core 112 has a key channel 114 into which the key shank 16 can be inserted. The lock cylinder 102 has (lower) tumblers, each of which has a housing pin arranged in the diameter area 106 and a core pin arranged in the cylinder core 112 (not shown).

In the example, the lock cylinder 102 also has a lateral tumbler 120 for actuation by the displaceable actuating pin 28 of the key 10 and a stop element 130 on or in its key channel 114 (cf. Figure 4b and 4c ). When the key shank 16 is inserted into the key channel 114 , the actuating pin 28 comes into contact with the stop element 130 and is thereby displaced in the channel 28 of the key shank 16 , specifically toward the first channel end 46 . As a result, the lateral tumbler 120 is shifted to the release position (cf. Figure 4b and 4c ).

In the example, stop element 130 is embodied as a pin 132 arranged orthogonally to central longitudinal plane 116 of key channel 114 in cylinder core 112, which is arranged fixedly in cylinder core 112 (cf. Figure 4b and 4c ). The free end 134 (front end 134) of the pin 132 protrudes into the key channel 114 in the example. The longitudinal groove 44 formed in the key shank 16 (cf. Figure 1a and 1b ) corresponds to the free end 134 of the pin 132 in such a way that the key shank 16 can be inserted into the keyway 114.

In the example, the lateral tumbler 120 is arranged in the diameter area 106 of the cylinder housing 104 (cf. Figure 4b and 4c ). The lateral tumbler 120 has a housing pin 122 and a locking pin 124 , with the key shank 16 being inserted into the key channel 114 , the actuating pin 28 acting on the housing pin 122 via the locking pin 124 .

The locking pin 124 can thus be actuated via the actuating pin 28 in such a way that the parting plane 126 of the housing pin 122 and locking pin 124 is located on the lateral surface 118 of the cylinder core 112, i.e. on the parting surface between the cylinder core 112 and the cylinder housing 104.

The housing pin 122 is slidable in
Diameter area 106 of the cylinder housing 104 is arranged and spring-loaded in the example by means of a compression spring (not shown). The locking pin 124 is movably arranged in the cylinder core 112 and is not spring-loaded in the example. In addition, a press-in plug can be provided (not shown), which closes an opening 128 for the lateral tumbler 120 in the diameter area 106 of the cylinder housing 104 . The compression spring can be arranged between the press-in plug and the housing pin 122 (not shown).

The central longitudinal axis 125 of the locking pin 124 and the central longitudinal axis 29 of the actuating pin 28 enclose an angle with one another (cf. Figure 4b and 4c ). The central longitudinal axis 29 of the actuating pin 28 and the The central longitudinal axis 131 of the stop element 130 and of the pin 132 enclose an angle with one another. The actuating pin 28 can thus act as a deflection pin, which deflects a force applied by the stop element 130 or pin 132 to the actuating pin 28 to the locking pin 124 .

The central longitudinal axis 121 of the housing pin 122 and the central longitudinal axis 125 of the locking pin 124 enclose an angle with one another.

In summary, the present key 10 or the present locking system 100 makes use of the actuating pin 28 as a kind of deflection pin over which the locking pin 124, which is not spring-loaded, is pushed into the correct position.

The difficulty with the balancing of two spring-loaded locking pins known in the prior art is the spring forces. In order for this system to work, the forces used to move the two pins must always be in a constant ratio, ideally equal. It is difficult, if not impossible, to guarantee this over the long term due to wear and tear and environmental influences.

This problem is avoided by the proposed key 10 or the proposed locking system 100 . The fixed pin 132 presses on the the actuating pin 28 movably mounted in the key shank 16 pushes the movable locking pin 124 in the cylinder core 112 against the spring-loaded housing pin 122 in such a way that the parting plane 126 between the housing pin 122 and the locking pin 124 coincides with the parting surface between the cylinder core 112 and the housing 104 and the cylinder core 112 can be rotated .

Claims (15)

Key (10) for operating a lock cylinder (100), with a key bow (12) and a key shank (16) extending from the key bow (12), a key shank (16) extending along a channel axis (22) through the key shank (16) is formed through a channel (24) extending through it, characterized in that the channel (24) is formed as a stepped bore, the channel axis (22) having an angle of less than 90° with the central longitudinal plane (26) of the key shank (16). includes, and that in the channel (24) along the channel (24) displaceable actuating pin (28) for actuating a lateral tumbler (120) of the lock cylinder (100) is arranged. The key (10) of claim 1, characterized in that the channel (24) is the only channel (24) extending through the key shank (16) and the actuating pin (28) is the only one in Key shank (16) arranged confirmation pin (28) is. Key (10) according to Claim 1 or 2, characterized in that the key shank (16) is profiled, at least in sections, in such a way that an indentation (30) is formed on one side of the key shank (32) in each case a bulge (34) on the other key shank side (36) opposite. Key (10) according to one of the preceding claims, characterized in that the key shank (16) has an asymmetrical cross-section and/or that the key shank (16) is dimensioned such that six profile incisions are formed on each of the key shank sides (32, 36). be able. Key (10) according to one of the preceding claims, characterized in that a longitudinal groove (44) is formed on at least one key shank side (32, 36) and extends from the channel (24) to the free end (45) of the key shank (16 ) extends. Key (10) according to one of the preceding claims, characterized in that the channel (24) is open at a first channel end (46) and reduced in cross-section, the actuating pin (28) having an actuating section (50 ) which, when the actuating pin (28) rests against the first channel end (46), protrudes at least partially from the key shank (16). Key (10) according to one of the preceding claims, characterized in that the channel (24) at its first channel end (46) and the actuating pin (28) at its first pin end (48) are at least partially complementary to each other. Key (10) according to one of the preceding claims, characterized in that the channel (24), starting from the first channel end (46) into the interior of the key shank (16), has a first channel section (52) with a first cross section, a second channel section (54) having a second cross section and a third channel section (56) having a third cross section. Key (10) according to Claim 8, characterized in that a connecting section (53) is arranged between the first channel section (52) and the second channel section (54), in which the channel cross section from the first channel section (52) to the second channel section (54 ) in particular continuously, preferably conically, and/or that a step (55) is formed between the second channel section (54) and the third channel section (56), in which the channel cross section from the second channel section (54) to the third channel section (56 ) increases. Key (10) according to one of the preceding claims, characterized in that the channel (24) is open at a second channel end (58) and is reduced in cross-section. Locking system (100) with a key (10) according to one of the preceding claims and an associated lock cylinder (102), characterized in that the lock cylinder (102) has a lateral tumbler (120) for confirmation by the displaceable confirmation pin (28) and on or has a stop element (130) in its key channel (114), wherein when the key shank (16) is inserted into the key channel (114), the actuating pin (28) comes into contact with the stop element (130) and thereby in the channel (24) of the key shank (16) is shifted, whereby the lateral tumbler (120) is shifted into the release position. Locking system (100) according to Claim 11, characterized in that the lateral tumbler (120) is arranged in the diameter area (106) of the cylinder housing (104). Locking system (100) according to Claim 11 or 12, characterized in that the stop element (130) is designed as a pin (132) arranged orthogonally to the central longitudinal plane (116) of the key channel (114) in the cylinder core (112). Locking system (100) according to one of Claims 11 to 13, characterized in that the lateral tumbler (120) has a housing pin (122) and a locking pin (124), with the key shank being inserted into the key channel (114). (16) the actuating pin (28) acts on the housing pin (122) via the locking pin (124). Locking system (100) according to one of Claims 11 to 14, characterized in that the central longitudinal axis (125) of the locking pin (124) and the central longitudinal axis (29) of the actuating pin (28) form an angle with one another and/or that the central longitudinal axis (29) of the actuating pin (28) and the central longitudinal axis (131) of the stop element (130) enclose an angle with one another.

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