EP3483365A1 - Key for operating a lock cylinder and locking system with key and lock cylinder - Google Patents

Abstract

A key (10) for actuating a lock cylinder (102) with a key bit (12) and a key shaft (16) extending from the key bit (12) is configured and developed with simple structural means for safe and reliable operation in that a channel (22) extending through the key shank (16) is formed in the key shank (16), in which a rolling element (24) displaceable along the channel (22) is actuated to actuate a lateral tumbler (134) of a lock cylinder (102 ) is arranged. 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 crayon and a key shaft extending from the crenel. In addition, the invention relates to a locking system with such a key and an associated lock cylinder.

Key and locking systems of the type mentioned are known from the prior art, for example. From the EP 2 388 415 A1 , Such keys comprise a key bit and a key shaft extending from the key bit, on which are formed recesses for aligning tumblers provided on an associated key cylinder. Such keys have been proven, as these, inter alia, due to the high number individual locking combinations offer the consumer a high level of security.

However, there is room for optimization. Thus, the Vorhalteaufwand and the use of materials in the production of corresponding lock cylinder key are quite high. In addition, it is problematic that comparatively complex key profiles can be recognized and reproduced by the availability of modern copying methods, for example using 3D scanners and 3D printers. This impairs the desired highest possible safety for end customers.

The invention has for its object to enable safe and reliable operation with a key or a locking system with simple structural means. It is desirable to reduce the use of materials.

The invention achieves the object by a key with the features of claim 1. Thereafter, the key is characterized in that in the key shank a through the key shank extending through channel is formed, in which a displaceable along or within the channel rolling elements for actuating a (side) tumbler (a lock cylinder) is arranged.

Such a configuration has the advantage that the copy security of such a key (lock cylinder key) is increased. This results from the fact that modern copying a key contour can be replicated relatively accurately, but not the kinematics of moving elements of the Key contour. Even their function based on the associated lock cylinder is not recognizable by the key. By arranged in a channel in the key shank rolling elements and a mechanical scanning of the rolling element is difficult, especially since the rolling elements in the channel can be freely moved. This also contributes to the copy security. Due to this configuration, further novel tumblers can be provided. The copy protection is increased. In this case, a force can be passed through the key shank by means of the rolling body. By extending across the key shaft channel, the stability of the key shaft is not or only negligibly affected.

Concretely, the channel for the rolling elements in the remote from the crayon half of the key shaft (front key shank half), in particular in the front third of the key shank, be arranged. As a result, a tumbler corresponding to the rolling element can be arranged at or near the inner end of the closing channel of an associated lock cylinder. This makes manipulation difficult.

Specifically, the channel for the rolling element can be adapted to the shape of the rolling element, so that the cross section of the channel corresponds to the cross section of the rolling element. In this case, the inner dimensions of the channel can in particular be selected to be slightly larger than the outer dimensions of the rolling element (cross section or main dimensions). This allows a mobility of the rolling body along the channel.

The rolling element is smaller in its transverse to the key shaft (key shaft strength) oriented dimensions dimensioned as the strength of the key shaft. In particular, the rolling element in a spherical or circular cylindrical configuration has a diameter which is less than the strength of the key shaft (key shank thickness). In a spherical configuration of the rolling element, the channel may be circular, for example. Drilled or punched, be.

The key shank extends in particular along an axial direction away from the key chalk. In particular, the key has narrow sides oriented along the direction of thickness / thickness of the key. In particular, each side surface of the key or of the key shaft is located between the narrow sides.

The key for actuating a lock cylinder (lock cylinder key) may in particular be a profile cylinder key. The associated lock cylinder can be designed in particular as a profile cylinder. "Associated" means that a key can be fitted into a lock cylinder so that the lock cylinder can be operated by the key.

The profile cylinder key can be designed as a beard key ("conventional profile cylinder key"). A beard key can only be inserted in one orientation into an associated lock cylinder. Alternatively, the profile cylinder key may be formed as a reversible key. A reversible key can be inserted in several, in particular in two, orientations in an associated lock cylinder.

In the context of a preferred embodiment, the channel (rolling element channel) can be reduced at the ends in each case open and at the end in cross section. In this way, the rolling elements can protrude in sections from the channel, but falling out of the rolling body from the channel is avoided. As a result, a secure assignment of the rolling element based on the key shank is ensured. In this case, the channel can be reduced at each end by forming in cross section. For example. the rolling element may be caulked in the key shank.

Conveniently, the channel may extend transversely or obliquely through the key shaft, in particular be arranged transversely or obliquely to the longitudinal center plane of the key shaft. As a result, a force can be transmitted over a short path through the key shaft. In particular, the channel can intersect the key shank at a right angle (right angle between the central longitudinal axis of the channel and the central longitudinal plane of the key shank).

Specifically, the rolling element may be formed as a ball, roller or needle. Hereby, a suitable rolling element for the respective application can be provided.

Advantageously, at least on one side of the key shaft, a longitudinal groove may be formed which extends (axially) from the channel to the free end of the key shaft (key shank tip). Hereby, a simple insertion of the key is made possible in a keyway, in particular when the cylinder-side stop element is stationary with respect to the keyway or the cylinder core of the lock cylinder and / or in the keyway protrudes. The longitudinal groove can then serve as access for the above cylinder-side stop element.

In the context of a preferred embodiment, the key shank can have a stabilization insert in its half (front half) facing away axially from the key bit, which has a higher strength than the material of the key shank. This strengthens and stabilizes the key shank. The risk of damage to the key shaft, for example by bending or breaking, is thus considerably reduced. The stabilization insert can be arranged axially on the side facing away from the free end of the key shaft side of the channel (Wälzkörperkanal).

In concrete terms, the stabilization insert can be arranged, in particular pressed, in a passage formed in the key shank, in particular punched. To achieve a defined offset, a cross-sectional reduction can be provided within the passage, for example in the form of a shoulder. The stabilization insert can come into contact with this cross-sectional reduction.

As part of a possible embodiment of the stabilization insert may be formed such that it is arranged flush or recessed relative to the side surfaces of the key shank. Alternatively, it is conceivable that the stabilization insert on one side or on both sides in each case has a protruding from the key shaft projection for closing coding.

Advantageously, the side surfaces of the key shaft can be formed parallel to each other and profile-free (side surfaces free of axial, a key shank profiling depressions and / or elevations). This facilitates the production and reduces the storage in the key production, since it can always fall back on the same base material. The above-described longitudinal groove does not constitute a profiling of the key shank, since this merely facilitates the insertion of a stop element into the channel. The cross section of the key shank itself thus does not contribute to the closing coding, but only the features incorporated in the key shank, for example by projections formed in inserts inserted into the key shank and / or recesses formed in the key shank (bearer side) for actuating cylinder-side tumblers. The base material for key production can thus be unprofiled plates, for example metal or sheet metal plates.

In an advantageous manner, the key shank may have recesses (for actuating cylinder-side tumblers) serving for closing coding, and a continuous outer edge may be formed in the region of the recesses. Thus, the recesses and the intervening elevations do not form a sharp-edged profile. The risk of injury to key users and damage to their garments is thus reduced. The recesses can also be referred to as incisions.

Conveniently, the outer edge may be formed by a web extending axially along the key shaft. This forms the dull outer edge and stabilizes the key shaft. To the web can be arranged on both sides of the recesses for closing coding. The web may in particular be arranged centrally in relation to the thickness of the key shank, wherein the web is located between the two rows of recesses and stabilizes the key shank. In other words, a double-row version of the recesses with web is created as an intermediate element.

Concretely, the key shank, in particular the key crest and the key shank, can have a material thickness of 1.5 mm to 2.5 mm (millimeters), preferably 1.7 mm to 2.3 mm, more preferably 1.8 mm to 2.2 mm, even more preferably 2 , 0mm, exhibit.

In the context of a preferred embodiment, the key can be formed from low-nickel metal or a low-nickel metal alloy, in particular from a stainless chromium steel. Thus, allergies that can arise on the part of the key users through contact with a lock cylinder key can be avoided. The term "low-nickel" is understood to mean that the nickel release is below a release rate which is relevant or perceptible for allergy sufferers, in particular below 0.5 μg nickel per cm 2 per week.

The object mentioned above is also achieved by a locking system with a key as described above and an associated lock cylinder with the features of the independent claim. This locking system is in particular a Combination consisting of the key as described above and an associated lock cylinder. With regard to the achievable advantages, reference is made to the statements in connection with the key described above.

The locking system is characterized in that the lock cylinder a lateral tumbler for actuation by the movable rolling elements of the key and on or in its keyway (key channel of the lock core of the lock cylinder) has a stop element, wherein upon insertion of the key in the keyway of the rolling elements with the Stop element comes into contact and is thereby displaced in the channel of the key shank, whereby the tumbler is displaced in the release position.

In the context of a preferred embodiment, the stop element can be designed as a pin (scanning pin) arranged orthogonally to the key channel in the cylinder core. Hereby a structurally simple and stable stop element is created. The pin can be stepped. For example. the pin may have a key portion facing the front portion having a first diameter and a keyway remote from the second channel, in particular wherein the second diameter is greater than the first diameter.

To facilitate insertion of the key, the stop element or the pin may have a conical free end facing the closing channel (conical tip or conical section). The pin can be fixed relative to the key channel and / or the cylinder core be arranged. The stylus may also be referred to as an activation stylus.

Advantageously, the lateral tumbler in the diameter range of the cylinder housing (the closing core receiving portion of the cylinder housing of the lock cylinder) may be arranged. Hereby, a lateral tumbler is created with simple structural means. The lateral tumbler may include a press-fit plug, a lock pin, and a compression spring disposed between the push-in plug and the lock pin.

Conveniently, an actuating element, in particular an actuating pin, can be arranged in the cylinder core of the lock cylinder, via which the rolling element acts on the tumbler. This makes it possible with simple means a transmission of a force from the rolling elements on the lateral tumbler. The actuating element may be opposite the stop element with respect to the keyway. In particular, the longitudinal axes of the actuating element and the stop element may be arranged parallel or congruent.

The actuating element may be formed as a deflection pin, which transmits the force with a lateral offset to the tumbler. The actuating element may thus have a cylindrical portion (pin portion) and an arm portion projecting therefrom. This embodiment allows an offset arrangement of the lateral tumbler or its locking pin relative to the stop element and / or the cylindrical portion of the actuating pin.

The lateral tumbler, the stop member and / or the actuator may be located (axially) at or near the inboard end of the keyway. This makes manipulation of these components difficult.

The lock cylinder may have further features. Thus, the lock cylinder may have tumblers for recesses in the key shank. The tumblers may have core pins, housing pins and springs (cylinder springs) for biasing the tumblers. Steel balls can close the openings for the tumblers in the cylinder housing. In the cylinder core can be arranged adjacent to the closing channel opening hard metal pins as Bohrschutz. The lock cylinder can have a double-row design on tumblers and lateral tumblers with profile sensing pins.

For further embodiment of the locking system can also serve the measures described in connection with the key.

Figur 1

eine Ausführungsform des Schlüssels in einer perspektivischen Ansicht;

Figur 2

den Schlüssel aus Figur 1 in einer Seitenansicht und einer Frontansicht (Blick auf die Spitze des Schlüsselschafts);

Figur 3

eine Ausführungsform des Schließsystems mit einem Schlüssel aus Figur 1 nebst einem zugehörigem Schließzylinder in einer Explosionsdarstellung; und

Figur 4

den Schließzylinder aus Figur 3 im verriegelten Zustand (Darstellung (a)) und im entriegelten Zustand (Darstellung (b)) jeweils in einer geschnittenen Ansicht.

The invention will be explained in more detail with reference to the figures, wherein identical or functionally identical elements are optionally provided only once with reference numerals. Show it:

FIG. 1

an embodiment of the key in a perspective view;

FIG. 2

the key out FIG. 1 in a side view and a front view (view of the tip of the key shaft);

FIG. 3

an embodiment of the locking system with a key FIG. 1 together with an associated lock cylinder in an exploded view; and

FIG. 4

the lock cylinder off FIG. 3 in the locked state (illustration (a)) and in the unlocked state (illustration (b)) each in a sectional view.

FIG. 1 shows an embodiment of a key (lock cylinder key), which is generally designated by the reference numeral 10. The key 10 is presently designed as a "conventional profile cylinder key" (beard key).

The key 10 has a key bit 12 and a key shank 16 extending away from the key bit 12 along an axial direction 14. The key shank 16 has a half 18 (front half 18) facing away from the key chalk 12 and a half 20 (rear half 20) facing the key chamfer 12.

In the key shank 16, a channel 22 extending through the key shank 16 is formed. In the channel 22, a rolling body 24 for actuating a lateral tumbler of an associated lock cylinder is arranged (see FIG. 3 and 4 ). The rolling element 24 is displaceable along the channel 22 within the channel 22. The rolling element 24 can move freely along the channel 22.

The channel 22 is in each case open at the end and is reduced in cross-section (with reference to the channel section located between the ends) (see FIG. 4 ). The roller body 24 may end up partially projecting out of the channel 22, but falling out of the rolling element 24 from the channel 22 is avoided. The rolling elements 24 may, for example, be caulked in the key shank 16, as shown here.

The channel 22 extends transversely through the key shank 16 (channel 22 disposed transversely to the longitudinal median plane of the key shank 16). The channel 22 intersects the key shank 16, in particular at a right angle.

The rolling element 24 is in the present case designed as a ball. The channel 22 has a circular cross-section and is minimally larger than the diameter of the rolling body 24. The channel 22 may be formed by drilling or punching.

The key shank 16 has a side 26 (side surface 27) and an opposite side 28 (side surface 29) (see FIG FIG. 1 ). On one side 26 of the key shaft 16, a longitudinal groove 30 is formed, which extends axially from the channel 22 to the free end of the key shaft 16 (key shank). The longitudinal groove 30 serves as access for a cylinder-side sensing element which scans the rolling element 24 (described below).

The key shank 16 has a stabilization insert 32 in its half 18 (front half 18), which is axially remote from the key bit 12. The stabilization insert 32 has a higher strength than the material of the key shank 16. Der Stabilization insert 32 is secured in a formed in the key shank 16 passage 33, in particular pressed. The stabilization insert 32 is designed in such a way that, when inserted, it is arranged flush or recessed relative to the side surfaces 27, 29 of the key shaft 16.

The side surfaces 27, 29 of the key shank 16 are formed parallel to each other and profile-free. This means that the side surfaces 27, 29 are free of - a key shaft profiling forming -, for example. Axial, surveys and / or depressions. The above-described longitudinal groove 30 does not constitute a profiling, since this serves merely to introduce a sensing element or, in other words, as access for a stop element into the channel 22.

The key shank 16 has recesses 34, 36 serving for the closing coding (notches for actuating lock-side tumblers 114). In the region of the recesses 34, 36 a continuous outer edge 38 is formed. The outer edge 38 is formed by a web 40 extending axially along the key shaft 16. On both sides of the web 40, the recesses 34, 36 are arranged (double-row design).

The key 10, in particular the key 12 and the key shank 16, may have material thicknesses as described above. Further, the key 10 may be formed of low-nickel metal or a low-nickel metal alloy, as described above.

FIG. 3 shows a locking system, which is generally designated by the reference numeral 100. The locking system 100 has a key 10 as described above and an associated lock cylinder 102. The lock cylinder 102 is formed as a "conventional profile cylinder" for receiving a beard key ("conventional profile cylinder key").

The profile cylinder 102 has a cylinder housing 104, which has a diameter portion 106 and a waisted portion 108. The cylinder housing 104 may be formed in one piece or modular (different lengths by a cylinder housing 104 formed from a plurality of elements of different lengths). In the cylinder housing 104, a core passage 110 for receiving a rotatable cylinder core 112 is formed.

The lock cylinder 102 has tumblers 114 which are inserted into tumbler bores 116 in the cylinder housing 104 and the cylinder core 112, respectively. The tumblers 114 have housing pins 118, core pins 120 and cylinder springs 122. Balls or steel balls 124 close the tumbler bores 116 at FIG. 3 lower end of the cylinder housing 104 (waisted portion 108).

The cylinder core 112 has a keyway 126 into which the key 10 can be inserted from an insertion end 128. At the insertion end 128, a drill protection 130 in the form of a hard metal pin is respectively introduced on both sides of the key channel 126. For this purpose, the hard metal pins 130 are introduced into bore protection openings 132 in the cylinder core 112.

The lock cylinder 102 has a lateral tumbler 134 for actuation by the displaceable rolling elements 24 of the Key 10 on. In addition, the cylinder core 112 has a stop element 136 on or in its keyway 126. The lateral tumbler 134 and the stop element 136 are arranged axially at the same height relative to the longitudinal direction of the keyway 126. The lateral tumbler 134 and the stopper 136 are thus opposite each other.

The stopper member 136 is formed as a pin orthogonal to the keyway 126 in the cylinder core 112 (scanning pin). The stop element 136 is arranged in a stop element receiving opening 138 fixed in the cylinder core 112. The stopper member 136 has, relative to the keyway 126, a front portion 140 having a first diameter and a rear portion 142 having a second diameter larger than the first diameter. The stop element 136 has a conical front end 144, which projects into the keyway 126.

The lateral tumbler 134 is disposed in the diameter portion 106 of the cylinder housing 104, in a recess 151 of the cylinder housing 104. The side tumbler 134 has a press-fit plug 146 which is cup-shaped and open to one side. In this opening of the press-fit plug 146, a compression spring 148 and a locking pin 150 are arranged (see FIG. 3 and 4 ).

In a recess 161 in the cylinder core 112 of the lock cylinder 102, an actuating element 152 is arranged, via which the rolling element 24 (ball) acts on the lateral tumbler 134. The actuator 152 may also be referred to as an actuating pin or deflection pin become. In the locked state, the actuating element 152 is in particular flush with the keyway 126.

The actuator 152 has a cylindrical portion 154. Cylindrical portion 154 may have a smaller diameter forward portion 156 relative to keyway 126 and a larger diameter rearward portion 158. The actuating element 152 also has an arm portion 160 projecting from the cylindrical portion 154. The arm portion 160 is in contact with the locking pin 150 of the side tumblers 134. The arm portion 160 allows a distributed arrangement of the tumbler 134 and the cylindrical portion 154 of the actuating element.

The function of the locking system 100 will be described with reference to FIG FIG. 4 explained.

FIG. 4 (a) shows a locked state of the lock cylinder 102. The key 10 is not inserted in the keyway 126.

The actuator 152 is inoperative, so that the side tumbler 134 is active and blocks actuation of the lock cylinder 102. The locking pin 150 thus protrudes into the cylinder core 112. Even if the tumblers 114 were in the release position, the cylinder core 112 could only be rotated relative to the cylinder housing 104 until the wall sections 162, 164 rest against the locking pin 150. A full operation of the lock cylinder 102 required for opening is not possible.

FIG. 4 (b) shows an unlocked state of the lock cylinder 102. The key 10 is inserted into the lock channel 126.

When inserting the key 10 in the keyway 126, the stop element 136 (conical end 144) first passes through the longitudinal groove 30 formed in the key shank 16 before the rolling element 24 (ball) comes into contact with the stop element 136 (conical end 144). In this case, the stop element 136 projects with its conical end 144 into the channel 22 formed in the key shank 16 and displaces the rolling element 24 along the longitudinal direction of the channel 22 (in FIG FIG. 4 to the right). The rolling element 24 then protrudes at the side facing away from the stop element 136 side of the key shaft 16 sections.

As a result, the lateral tumbler 134 is displaced in the release position. By the rolling element 24 protruding from the key shank 16 due to the contact with the stop element 136, the actuating element 152 is displaced accordingly in the direction of the tumbler 134. The front end of the locking pin 150 is thus in the parting plane between the cylinder core 112 and cylinder housing 104 (edge of the core passage) and thus in the release position. If the tumblers 114 are also in the release position, the cylinder core 112 can be rotated relative to the cylinder housing 104. Thus, a complete actuation of the lock cylinder 102 is possible.

The invention has been described in connection with a profile cylinder key designed as a beard key ("conventional profile cylinder key") and a profile cylinder designed as a "conventional cylinder" described. In embodiments not shown, the key may be formed as a profiled cylinder key in the form of a reversible key and the profile cylinder as a cylinder for such a reversible key. The key 10 may then have on both sides 26, 28 a longitudinal groove 30 which extends from the tip of the key shaft 16 to the channel 22.

Claims (15)

A key (10) for operating a lock cylinder (102), comprising a key bit (12) and a key shank (16) extending from the key bit (12), characterized in that in the key shank (16) a key shaft (16) extending therethrough channel (22) is formed in which a along the channel (22) displaceable rolling elements (24) for actuating a lateral tumbler (134) of a lock cylinder (102) is arranged. Key (10) according to claim 1, characterized in that the channel (22) is each end open and reduced in cross section. Key (10) according to claim 1 or 2, characterized in that the channel (22) extends transversely or obliquely through the key shank (16), in particular transversely or obliquely to the longitudinal center plane of the key shank (16) is arranged. Key (10) according to one of the preceding claims, characterized in that the rolling body (22) is designed as a ball, roller or needle. A key (10) according to any one of the preceding claims, characterized in that at least on one side (26, 28) of the key shank (16) is formed a longitudinal groove (30) extending from the channel (22) to the free end of the key shank (16) extends. A key (10) according to any one of the preceding claims, characterized in that the key shank (16) has a stabilization insert (32) in its half (18) axially facing away from the key bit (12), which has a higher strength than the material of the key shank (16). Key (10) according to any one of the preceding claims, characterized in that the side surfaces (27, 29) of the key shank (16) are formed parallel to each other and free of profile. A key (10) according to any one of the preceding claims, characterized in that the key shank (16) has recesses (34, 36) serving for closing coding, and a continuous outer edge (38) is formed in the region of the recesses (34, 36). A key (10) according to claim 8, characterized in that the outer edge (38) is formed by a web (40) extending axially along the key shaft (16). Key (10) according to one of the preceding claims, characterized in that the key shank (16), in particular the key chamfer (12) and the key shank (16), has a material thickness of 1.5 mm to 2.5 mm, preferably 1.7 mm to 2 mm , 3mm, more preferably 1.8mm to 2.2mm, even more preferably 2.0mm. Key (10) according to one of the preceding claims, characterized in that the key (10) is made of low-nickel metal or a low-nickel metal alloy, in particular of a stainless chromium steel. 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 (134) for actuation by the displaceable rolling element (24) of the key (10). 10) and on or in its keyway (126) has a stop element (136), wherein upon insertion of the key (10) in the keyway (126) of the rolling elements (24) with the stop element (136) comes into contact and thereby in the channel (22) of the key shaft (16) is displaced, whereby the tumbler (134) is displaced in the release position. Locking system (100) according to claim 12, characterized in that the stop element (136) as an orthogonal to the keyway (126) in the cylinder core (112) arranged pin is formed. Locking system (100) according to claim 12 or 13, characterized in that the lateral tumbler (134) in the diameter region (106) of the cylinder housing (104) is arranged. Locking system (100) according to one of claims 12 to 14, characterized in that in the cylinder core (112) of the lock cylinder (102) an actuating element (152) is arranged, via which the rolling body (24) acts on the tumbler (134).

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