EP4119750A1 - Locking cylinder and locking system - Google Patents

Abstract

The invention relates to a lock cylinder (100) with a housing (102), a core opening (110) formed in the housing (102) and a cylinder core (112) rotatably arranged in the core opening (110), the cylinder core (112) having a key channel (116), with a lateral tumbler (120, 124) extending along a longitudinal axis (118, 122) being arranged on both sides of the key channel (116), the tumblers (120, 124) lying opposite one another and the Longitudinal axes (118, 122) of the tumblers (120, 124) intersect at an angle (α) of less than 180° at a point (P1) which is spaced apart from the central longitudinal axis (114) of the cylinder core (112).

A locking system (300) with such a lock cylinder (100) and an associated key (200) is specified.

Description

The invention relates to a lock cylinder having the features of the preamble of claim 1. The invention also relates to a locking system having the features of the independent claim.

Locking cylinders and locking systems of the type mentioned are known from the prior art, for example CH 449 455 A . A cylinder lock with an associated key is described therein, the cylinder lock having opposite tumblers which are oriented at a 90° angle to the key channel are. In addition, the cylinder lock has additional tumblers, each of which is arranged at a 45° angle to the keyway. A comparatively high number of locked secrets can be realized in this way. However, the design and manufacturing costs are high and the cylinder lock has a large number of components. The cylinder core is weakened to a considerable extent by the many bores.

The object of the invention is to increase the security of a lock cylinder or a locking system with simple structural means. It is particularly desirable to minimize unauthorized rotation of the cylinder core.

The invention solves this problem with a lock cylinder having the features of claim 1.

The lock cylinder has a housing, a core opening formed in the housing and a cylinder core which is rotatably arranged in the core opening and which in turn has a key channel. A lateral tumbler extending along a longitudinal axis is arranged on both sides of the key channel (each tumbler extends along its own longitudinal axis). The tumblers are opposite each other in relation to the key channel and the longitudinal axes of the tumblers intersect at an angle of less than 180° at a point that is remote from the central longitudinal axis (axis of rotation) of the cylinder core is spaced. In other words, the longitudinal axes of the tumblers are not oriented along the radial direction of the cylinder core.

According to the proposed embodiment, the tumblers or their locking pins are in an angular position inclined downward toward the center of the cylinder core. Due to the inclined angular position to the key channel, the highest resistance forces against unauthorized turning attempts can be achieved in both directions of rotation, as a kind of wedge effect results. In addition, manipulation of the tumblers, which are angled relative to the key channel, is made more difficult. Furthermore, due to this angular position on the associated key, countersinks formed for querying the tumblers or the additional pins are more difficult to copy.

The housing of the lock cylinder can have a diameter area and an adjoining tapered area. The lock cylinder can be designed as a profile cylinder (e.g. according to DIN 18252).

The lock cylinder can be set up to hold an asymmetrical key, the key shank of which can only be inserted into the key channel in one orientation (conventional key or non-reversible key).

As an alternative to this, the lock cylinder can be set up to hold a reversible key, the key shank of which can be rotated in at least two different ways, for example by 180° along the longitudinal axis of the key shank staggered, orientations can be introduced into the key channel ("turning cylinder" or "turning system").

Within the scope of a preferred embodiment, the tumblers can each have a locking pin which is displaceably arranged in a core channel formed in the cylinder core, the core channel extending along the relevant longitudinal axis of the respective tumbler. This creates a structurally simple and at the same time stable locking device. Each tumbler preferably has only exactly one locking pin (not a plurality of pin elements). The core channel can open into the key channel at one end and be open to the outer surface of the cylinder core at the other end.

Advantageously, the locking pins can each have an end section on the end facing away from the key channel, preferably tapering towards the free end, in particular tapering to a point, e.g , In particular complementary to the end portion formed recess can engage or engages in the wall of the core opening. A precise engagement of the end section in the recess is hereby possible, so that a stable blocking effect can be achieved. This contributes to greater security.

If the end section of the locking pin and the associated recess each have a tapering contour, in particular tapering to a point, the locking pin can, when a key shank of an (authorised) key belonging to the lock cylinder is inserted into the key channel, be locked with its end section by rotating the cylinder core slide along the contour of the recess and are thus displaced in the direction of the keyway. Thus, the lateral tumbler or the lateral tumblers are released and the cylinder core can be rotated relative to the housing.

In concrete terms, the locking pins can each be designed in such a way that their end sections engage in the recess when a key shank of an unauthorized key is inserted into the key channel, so that the cylinder core cannot be rotated. This prevents the locking cylinder from being operated if there is no authorization.

Alternatively or additionally, the core pins can each be designed such that their end sections can disengage from the recess when a key shank of an associated (authorized) key is inserted into the key channel, so that the cylinder core can be rotated. Actuation of the lock cylinder is thus released on the basis of an existing authorization.

Within the framework of a preferred embodiment, a plurality of lateral tumblers can be arranged on both sides of the key channel. This increases the number of possible locking secrets. In addition, the blocking effect can be increased in the event of a lack of authorization (key not belonging to it).

Advantageously, each of the several tumblers can have a locking pin with an end section, in particular with an end section as described above, the locking pin(s) of the tumblers arranged on one side of the key channel being connected to one another by means of a locking bar. As a result, a high blocking effect can be achieved with a comparatively small number of components. The respectively associated recess, in which the locking bar can or does engage in the neutral position of the lock cylinder (key removal position), is designed to be complementary to the locking bar and can, for example, extend parallel to the central longitudinal axis of the core opening. A recess corresponding to the locking bar can be formed in the cylinder core, which recess can accommodate the locking bar if authorization is present (associated key), so that the cylinder core can be rotated. For example, between 1 and 4 locking pins can be arranged on the locking bar (different arrangements and variations of the locking pins are conceivable).

Expediently, in addition to the lateral tumblers described above, the lock cylinder can also have other (conventional) tumblers that extend along or parallel to the central longitudinal plane of the lock cylinder. Starting from the waisted area of the housing, these further tumblers can extend into the diameter area or the cylinder core arranged there. The tumblers can have core pins arranged in the cylinder core and housing pins arranged in the housing. In addition, a spring and/or a closure element for closing the tumbler bore, for example a plug or a ball, can be provided in each tumbler. The tumblers can be designed in one row or in two rows.

The object mentioned at the outset is also achieved by a locking system having the features of the independent claim. With regard to the advantages, reference is made to the relevant statements on the lock cylinder described above.

The locking system has a locking cylinder with one or more of the aspects described above and an associated (authorized) key. The key has a key bow and a key shank extending from the key bow along a longitudinal direction (key shank longitudinal direction). In each of the two side faces of the key shank there is a sinking recess, which extends along a sinking axis, for or for querying formed by lateral tumblers of the lock cylinder. The sinkers are opposite each other in relation to the key shank and the sinker axes of the sinkers intersect at an angle of less than 180° at one point.

The key shank has two side surfaces or flat sides and two narrow sides. Similar sides face each other. In each case there is a narrow side between the side surfaces or flat sides. One of the narrow sides can be the spine of the key.

The point at which the sinker axes intersect at an angle of less than 180° lies in particular within the cross section of the key shank. The angle β at which the lowering axes intersect at one point corresponds in particular to the angle α at which the longitudinal axes of the tumblers of the locking cylinder intersect at one point (angle β between the lowering axes and angle α between the longitudinal axes are identical).

In concrete terms, the key shank can have incisions for the further tumblers or for querying the further tumblers, in particular on the narrow side facing away from the back of the key. The key can thus carry a locking code relating to the other tumblers.

Expediently, the incisions along the longitudinal direction of the key shank each by a first Distance x be spaced apart. In other words, adjacent incisions can each be spaced apart from one another by the same distance, namely by the first distance x. A defined, equidistant arrangement of the incisions for the further tumblers is thus created. The distance x can be measured from the same point of the incisions, for example from the center of the incisions.

Advantageously, a plurality of depressions can be formed on each side surface (flat side) of the key shank, the depressions being spaced apart from each other by a second distance y along the longitudinal direction of the key shank. In other words, adjacent sink troughs can each be spaced apart from one another by the same distance, namely by the second distance y. This creates a defined, equidistant arrangement of the sink troughs. The distance y can always be measured from the same point on the trough, e.g. from the center of the trough.

In the context of a preferred embodiment, the depressions can be arranged on the key shank in such a way that a depression is located between two adjacent incisions along the longitudinal direction of the key shank. In other words, the depressions and the incisions are arranged alternately along the longitudinal direction of the key shank. This avoids excessive localized weakening of the key shaft. the The number of incisions and troughs can vary. The depressions can be arranged orthogonally to the longitudinal direction of the key shank in an overlap with or above the incisions.

The first distance x and the second distance y can advantageously be identical. Thus, the sinking troughs and the incisions are each arranged at identical distances relative to one another.

Fig.1

eine Ausführungsform eines Schließzylinders mit berechtigtem asymmetrischem Schlüssel in einer schematischen Schnittansicht;

Fig.2

den Schließzylinder aus Fig.1 mit unberechtigtem Schlüssel in einer schematischen Schnittansicht;

Fig.3

den berechtigten Schlüssel zum Schließzylinder gemäß Figur 1 in einer teilweise dargestellten Seitenansicht;

Fig.4

eine Ausführungsform eines Schließzylinders mit berechtigtem symmetrischem Schlüssel (Wendeschlüssel) in einer schematischen Schnittansicht;

Fig.5

den Schließzylinder aus Fig.4 mit unberechtigtem Schlüssel in einer schematischen Schnittansicht;

Fig.6

den berechtigten Schlüssel zum Schließzylinder gemäß Figur 4 in einer teilweise dargestellten Seitenansicht; und

Fig.7

eine Ausgestaltungsmöglichkeit der seitlichen Zuhaltungen in einer teilweisen Schnittansicht des Schließzylinders aus Figur 1 (Figur 7a) und mit möglichen Anordnung der Sperrstifte (Figur 7b) .

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 a lock cylinder with authorized asymmetrical key in a schematic sectional view;

Fig.2

the lock cylinder Fig.1 with an unauthorized key in a schematic sectional view;

Fig.3

the authorized key to the lock cylinder figure 1 in a partially shown side view;

Fig.4

an embodiment of a lock cylinder with authorized symmetrical key (reversible key) in a schematic sectional view;

Fig.5

the lock cylinder Fig.4 with an unauthorized key in a schematic sectional view;

Fig.6

the authorized key to the lock cylinder figure 4 in a partially shown side view; and

Fig.7

one possible embodiment of the lateral tumblers in a partial sectional view of the lock cylinder figure 1 ( Figure 7a ) and with possible arrangement of the locking pins ( Figure 7b ) .

the Figures 1 to 3 show a locking system, which is denoted overall by the reference numeral 300. The locking system 300 has a locking cylinder 100 (cf. Fig.1 ) and an associated key 200 (cf. Fig.3 ), which are described below.

The lock cylinder 100 has a housing 102 which has a diameter area 104 and a tapered area 106 (cf. Fig.1 ). The lock cylinder 100 is designed as a profile cylinder in the example. The lock cylinder 100 has a central longitudinal plane 108 .

A core opening 110 in which a cylinder core 112 is rotatably arranged is formed in the housing 102 or in the diameter region 104 . The cylinder core 112 extends along a central longitudinal axis 114 and has a Key channel 116 into which a key shank 206 of an associated key 200 can be inserted (cf. figure 3 ). In the example, the lock cylinder 100 is set up to accommodate an asymmetrical key (cf. Fig.1 ) .

At least one lateral tumbler 120, 124 extending along a longitudinal axis 118, 122 is arranged on both sides of the key channel 116 (cf. Fig.1 ). The tumblers 120, 124 are based on the keyway 116 opposite each other. The longitudinal axes 118, 122 of the tumblers 120, 124 intersect at an angle α of less than 180° at a point P1, which is spaced apart from the central longitudinal axis 114 of the cylinder core 112.

In the example, a plurality of tumblers 120, 124 are arranged on both sides of the key channel 116, specifically four tumblers 120, 124 each (cf. Fig.7a ).

The tumblers 120, 124 each have a locking pin 126, 128 which is displaceably arranged in a core channel 130, 132 (cf. Fig.1 ). The core channel 130, 132 extends in each case along the longitudinal axis 118, 122 of the relevant tumbler 120, 124.

In the example, the locking pins 126, 128 have a pointed end section 127, 129 on the end facing away from the key channel 116, which in the neutral position (key removal position) of the cylinder core 112 relative to the Housing 102 can engage or engages in a recess 134, 136, which corresponds to end portion 127, 129 and is designed to be complementary to end portion 127, 129, in wall 138 of core opening 110 (cf. Fig.1 and 2 ).

When a key shank 206 of an (authorised) key 200 belonging to the lock cylinder 100 is inserted into the key channel 116, the locking pin 126, 128 can slide along the contour of the recess 134, 136 with its end section 127, 129 by turning the cylinder core 112 and thereby be shifted in the direction of the key channel 116. Thus, the lateral tumblers 120, 124 are released and the cylinder core 112 can be rotated relative to the housing 102 (cf. Fig.1 ).

The locking pins 126, 128 are each designed in such a way that their end sections 127, 129 engage in the recess 134, 136 when a key shank 206 of an unauthorized key 200' is inserted into the key channel 116, so that the cylinder core 112 cannot be rotated (cf . Fig.2 ). The locking pins 126, 128 are each designed in such a way that their end sections 127, 129 can or do disengage from the recess 134, 136 when a key shank 206 of an associated (authorized) key 200 is inserted into the key channel 116, so that the Cylinder core 112 can be rotated (cf. Fig.1 ).

The locking pins 126, 128 of the tumblers 120, 124 each arranged on one side of the key channel 116 are connected to one another in the example by means of a locking bar 140, 142 (cf. Figure 7a ). The respectively associated recess 134, 136, into which the locking bar 140, 142 can or does engage when the lock cylinder 100 is in the neutral position, is designed in the example to complement the locking bar 140, 142 and can, for example, extend parallel to the central longitudinal axis 114 of the core opening 110 (cf . Fig.1 ). In the cylinder core 112, a recess corresponding to the locking bar 140, 142 can be formed, which can accommodate the locking bar 140, 142 if authorization is present (associated key 200), so that the cylinder core 112 can be rotated (not shown).

In addition to the tumblers 120, 124 described above, the lock cylinder 100 also has other (conventional) tumblers 150 which extend along or parallel to the central longitudinal plane 108 of the lock cylinder 100 (cf. Fig.7a ). The other tumblers 150 extend from the waisted area 106 of the housing into the diameter area 104 or the cylinder core 112 arranged there. In the example, six tumblers 150 are provided (cf. Fig.7a ).

In Figure 7a are the arranged on both sides of the key channel lateral tumblers 120, 124 shown on each of which one or more locking pins 126, 128 may be present, each by means of one of Locking bars 140, 142 are connected. In the representation of Figure 7a four locking pins 126, 128 are shown by way of example.

However, four locking pins 126, 128 do not have to be present on the locking strips 140, 142, but between one and four locking pins 126, 128 can be formed on the locking strip 140, 142 in each case.

Figure 7b shows the example of (in Fig.7a right) tumbler 124 the possible configurations of the locking pins 128. There are four possible locking pin positions A, B, C, D on the locking bar 142 (see Fig.7a ). A locking pin 128 may or may not optionally be present at these locking pin positions. In Figure 7b For example, the possible configurations of locking pins 128 on locking bar 142 are denoted by lower case letters a, b, c, d, e, f, g, h, i, j, k, l, m, n, o.

The key 200 has a key bow 202 and a key shank 206 extending away from the key bow 202 along a longitudinal axis 204 (cf. Fig.3 ). The key shank 206 has two flat sides or side surfaces 208, 210 and two narrow sides 212, 214 (cf. Fig.1 and 3 ).

In each of the two side faces 208, 210 of the key shank 206, there is at least one lowering trough 220, 222, which extends along a lowering axis 216, 218, for the lateral tumblers 120, 124 (cf. Fig.1 and 3 ). the Lowering troughs 220, 222 are opposite one another in relation to the key shank 206 and the lowering axes 216, 218 of the lowering troughs 220 intersect at an angle β of less than 180° at a point P2 (cf. Fig.1 ).

In the example, the point P2, at which the sinker axes 216, 218 intersect at an angle β of less than 180°, lies within the cross section of the key shank 206 (cf. Fig.1 ). The angle β at which the lowering axes 216, 218 intersect at a point P2 corresponds in particular to the angle α at which the longitudinal axes 118, 122 of the tumblers 120, 124 of the lock cylinder 100 intersect at the point P1 (cf. Fig.1 ).

On the narrow side 214 facing away from the narrow side 212 or from the back of the key 212, the key shank 206 has incisions 230 for the further tumblers 150 (cf. Fig.3 ). Six incisions 230 are provided in the example.

The incisions 230 are each spaced apart from one another by a first distance x along the longitudinal direction 204 of the key shank 206 . In other words, adjacent incisions 230 each have the same distance x from one another (equidistant arrangement).

In the example, a plurality of depressions 220, 222 are formed on each side surface 208, 210 of the key shank 206. In the example, four lowering troughs 220, 222 are provided (only lowering troughs 222 are shown). the Lowering depressions 220, 222 are each spaced apart from one another by a second distance y along the longitudinal direction 204 of the key shank 206 (cf. Fig.3 ). In other words, adjacent lowering troughs 220, 222 each have the same distance y from one another (equidistant arrangement).

The lowering troughs 220, 222 are arranged on the key shank 206 in such a way that a lowering trough 220, 222 is located along the longitudinal direction 204 of the key shank 206 between two adjacent incisions 230 (cf. Fig.3 ). The lowering troughs 220 , 222 are arranged orthogonally to the longitudinal direction 204 , partially overlapping the incisions 230 .

In the example, the second distance y and the first distance x are identical to one another.

the Figures 4 to 6 show an embodiment of the locking system 300 with lock cylinder 100 and associated key 200, which largely corresponds to the embodiment described above, so that to avoid repetition, reference is made to the explanations there.

Deviating from this, the lock cylinder 100 according to the present embodiment is set up to accommodate a reversible key 200 (cf. Fig.4 ), whose key shank 206 is inserted into the key channel 116 in two different orientations in the example can ("turning cylinder" or "turning system"). The key 200 is designed as a reversible key (cf. Fig.6 ).

The key 200 also has six notches 230 for the other tumblers 150 (cf. Fig.6 ). In addition, the key 200 has four depressions 220, 222 for the lateral tumblers 120, 124 in each of the two side faces 208, 210 of the key shank 206. The lowering troughs 220, 222 each extend along a lowering axis 216, 218. The lowering troughs 220, 222 are arranged orthogonally to the longitudinal direction 204 above the incisions (cf. Fig.6 ) .

The incisions 230 are each spaced apart from one another by a first distance x along the longitudinal direction 204 of the key shank 206 . The lowering troughs 220, 222 are each spaced apart from one another by a second distance y along the longitudinal direction 204 of the key shank 206. In the example, the second distance y and the first distance x are identical to one another.

The locking pins 126, 128 are each designed in such a way that their end sections 127, 129 engage in the recess 134, 136 when a key shank 206 of an unauthorized key 200' is inserted into the key channel 116, so that the cylinder core 112 cannot be rotated (cf . Fig.5 ). The locking pins 126, 128 are each formed such that their end portions 127, 129 when inserting a key shank 206 of an associated (authorized) key 200 in the Key channel 116 can disengage or disengage from recess 134, 136, so that cylinder core 112 can be rotated (cf. Fig.4 ).

The tumblers 120, 124 of the present lock cylinder 100 can be designed as above with reference to FIG Figures 7a and 7b described.

Claims (13)

Lock cylinder (100) having a housing (102), a core opening (110) formed in the housing (102) and a cylinder core (112) rotatably arranged in the core opening (110), the cylinder core (112) having a key channel (116). , characterized in that a lateral tumbler (120, 124) extending along a longitudinal axis (118, 122) is arranged on both sides of the key channel (116), the tumblers (120, 124) lying opposite one another and the longitudinal axes (118, 122) of the tumblers (120, 124) at an angle (α) of less than 180° at a point (P1) which is spaced apart from the central longitudinal axis (114) of the cylinder core (112). Lock cylinder (100) according to Claim 1, characterized in that the tumblers (120, 124) each have a locking pin (126, 128) which is displaceably arranged in a core channel (130, 132), the core channel (130, 132 ) each along the longitudinal axis (118, 122). Lock cylinder (100) according to Claim 2, characterized in that the locking pins (126, 128) have an end section (127, 129) on the end remote from the key channel (116) which preferably tapers towards the free end, in particular tapering to a point in neutral position of cylinder core (112) relative to the housing (102) in a recess (134, 136) in the wall (138) of the core opening (110) which corresponds to the end section (127, 129) and is in particular designed to be complementary to the end section (127, 129). can or intervenes. Locking cylinder (100) according to Claim 2 or 3, characterized in that the locking pins (126, 128) are each designed in such a way that their end sections (127, 129) when an unauthorized key (200') is inserted into the recess (134, 136) engage so that the cylinder core (112) cannot be rotated and/or that the locking pins (126, 128) are each designed in such a way that their end sections (127, 129) disengage when an associated key (200) is inserted can reach the recess (134, 136) so that the cylinder core (112) can be rotated. Lock cylinder (100) according to one of the preceding claims, characterized in that a plurality of tumblers (120, 124) are arranged on both sides of the key channel (116). Lock cylinder (100) according to one of the preceding claims, characterized in that the locking pin or pins (126, 128) of the tumblers (120, 124) are connected to one another by means of a locking strip (140, 142). Lock cylinder (100) according to one of the preceding claims, characterized in that the lock cylinder (100) has further tumblers (150) which extend along or parallel to the central longitudinal plane (108) of the lock cylinder (100). A locking system (300) comprising a lock cylinder (100) according to any one of the preceding claims and an associated key (200), the key (200) having a key bow (202) and a key shank (206) extending from the key bow (202). , wherein in each of the two side surfaces (208, 210) of the key shank (206) a lowering trough (220, 222) extending along a lowering axis (216, 218) is formed for the lateral tumblers (120, 124) of the lock cylinder (100), wherein the lowering troughs (220, 222) are opposite one another and the lowering axes (216, 218) of the lowering troughs (220, 222) intersect at a point (P2) at an angle (β) of less than 180°. Locking system (300) according to Claim 8, characterized in that the key shank (206) has incisions (230) for the further tumblers (150), in particular on the narrow side (214) facing away from the key back (212). Locking system (300) according to Claim 9, characterized in that the incisions (230) are each spaced apart from one another by a first distance (x) along the longitudinal direction (204) of the key shank (206). Locking system (300) according to one of Claims 8 to 10, characterized in that a plurality of depressions (220, 222) are formed on each side surface (208, 210) of the key shank (206), the depressions (220, 222) being along the Longitudinally (204) of the key shank (206) are spaced apart from each other by a second distance (y). Locking system (300) according to one of Claims 8 to 11, characterized in that the lowering troughs (220, 222) are arranged on the key shank (206) in such a way that a lowering trough (220, 222) extends along the longitudinal direction (204) of the key shank ( 206) between two adjacent incisions (230). Locking system (300) according to Claims 10 and 11, characterized in that the second distance (y) and the first distance (x) are identical.

Images