Locking device comprising a locking cylinder with rib scanning of the key by means of a rocker

Abstract

The invention relates to a locking cylinder with rib scanning of the key (1) by means of a rocker (2). In order to provide a rib key with high security, it is provided that the rotational axis of the rocker (2) is oriented perpendicular to the key side surface of the rib key (1), and that on that of the key side surfaces facing the rocker (2), a first rib section (1r1) and a second rib section (1r2) are arranged, which are separated from each other by a groove.

Description

[0001] The invention relates to a locking device comprising a locking cylinder and a ribbed key with rib scanning of the key by means of a rocker according to the features of the preamble of claim 1.

[0002] Document DE 35 03 660 A1 describes a locking device comprising a lock cylinder and a flat key. The lock cylinder comprises, in a known manner, a lock cylinder housing and a lock cylinder core. The lock cylinder core has a keyway for inserting a flat key. A lever-like rocker is rotatably mounted in the lock cylinder core. The rocker has a first and a second lever arm. The first lever arm has an end that interacts with the tip of the flat key. The second lever arm has a probe head and a locking finger. The probe head interacts with a recess on the key side surface; the locking finger interacts with a groove in the lock cylinder housing.When a suitable flat key is inserted into the keyway, the rocker is displaced in such a way that the second lever arm engages in the recess on the key side surface of the flat key and the locking finger disengages from the groove of the lock cylinder housing, whereby the lock cylinder core can be rotated relative to the lock cylinder housing.

[0003] Document DE 29 10 886 C describes a locking device comprising a lock cylinder and a flat key. The lock cylinder comprises, in a known manner, a lock cylinder housing and a lock cylinder core. The lock cylinder core has a keyway for inserting a flat key. In a known manner, displaceable core pins are provided in the lock cylinder core and displaceable housing pins are provided in the lock cylinder housing, which interact with notches in the key face of the flat key. Additionally, the lock cylinder core contains a receptacle in which a ribbed interrogation pin is displaceably mounted. This interrogation pin interacts with a rib on the key side surface of the flat key. If a correct flat key is inserted into the keyway, the ribbed interrogation pin is displaced such that, upon rotation of the lock cylinder core, the ribbed interrogation pin can pass the housing pins.However, if a flat key is inserted that does not have a rib on the key side surface, when the lock cylinder core is rotated and the rib query pin passes the housing pins, the corresponding housing pin will retract into the receptacle of the lock cylinder core in which the rib query pin is mounted, thus preventing further rotation of the lock cylinder core.

[0004] It is therefore the object of the present invention to provide a locking device with increased security and improved copy protection. In particular, the rib scanning security feature is to be improved.

[0005] This object is achieved according to the invention by a locking device having the features of claim 1.

[0006] According to the invention, a locking device is proposed, comprising a ribbed key and a locking cylinder, wherein the ribbed key has a key back, two key side surfaces and a key breast, wherein the locking cylinder has a locking cylinder housing and a locking cylinder core rotatably mounted in the locking cylinder housing, wherein the locking cylinder core has a keyway into which the ribbed key can be inserted, wherein a rocker is rotatably mounted in the locking cylinder core about an axis of rotation, wherein the rocker comprises a first probe head and a second probe head, wherein the first probe head and the second probe head protrude into the keyway, wherein the rocker is configured such that when the ribbed key is inserted into the keyway, the rocker is rotated due to the contact of the ribbed key with at least the first probe head and the second probe head.What is important here is that the axis of rotation of the rocker is oriented perpendicular to the key side surface of the ribbed key, that on that of the key side surfaces which faces the rocker, a first rib section and a second rib section are arranged, which are separated from one another by a groove.

[0007] When the ribbed key is inserted into the lock cylinder's keyway, the first probe or second probe can come into contact with the ribbed key or the rib with the first rib section. Because the rocker's rotation axis is perpendicular to the key side surface of the ribbed key, the rocker rotates around the rotation axis as the ribbed key is further inserted. The second probe or first probe interacts with the second rib section to enable the rocker to rotate. With the correct rib structure of the key, the rocker rotates so that the ribbed key can be inserted into the lock cylinder as far as it will go.

[0008] In particular, the ribbed wrench has at least one raised rib on its side surfaces. The at least one rib has a longer longitudinal extension and a narrower transverse extension. Preferably, the at least one rib runs obliquely to the longitudinal extension of the wrench. In particular, the at least one rib runs with its longitudinal extension inclined relative to the longitudinal extension of the ribbed wrench or the insertion direction of the ribbed wrench. The inclination can be an angle to the insertion direction in the range between plus / minus 1 degree and plus / minus 40 degrees, preferably in the range between plus / minus 2 degrees and plus / minus 30 degrees, most preferably in the range between plus / minus 2 degrees and plus / minus 20 degrees.

[0009] Preferably, at least one guide web is arranged in the locking cylinder core, which guide web cooperates with the first rib section and with the second rib section, wherein the at least one guide web is arranged obliquely with respect to the insertion direction of the rib key, wherein the angle of inclination of the at least one guide web with respect to the insertion direction is equal to the angle of inclination of the first rib section and the second rib section with respect to the insertion direction.

[0010] In particular, two guide webs are arranged in the locking cylinder core, which are aligned parallel to one another and thereby form a guide channel, wherein the first rib section and the second rib section are guided between the two guide webs in the guide channel.

[0011] Preferably, the probes of the rocker protrude far enough into the lock channel that they come into contact with the ribs of the key when the ribbed key is inserted. With the correct rib structure, the rocker is rotated so that the two probes each engage in a recess or groove located between the raised ribs, allowing the ribbed key to be inserted into the lock cylinder.

[0012] If the rib structure is not correctly designed, the rocker cannot rotate as intended. The scanning heads then come into contact with the raised rib structure and jam the key in the lock channel. Since the rocker is only mounted for rotation and, in particular, is not spring-loaded, the rocker cannot avoid the rib key and thus blocks the insertion of the rib key into the lock channel of the lock cylinder if the rib structure is incorrect. This effectively prevents the lock cylinder from being operated by an incorrect key. If the rib key does not have the correct rib structure, the rocker prevents the rib key from being inserted further to the stop and thus prevents the lock cylinder from being operated.

[0013] The ribbed key can preferably be designed as a cylinder key. In particular, the ribbed key has two parallel key side surfaces and a key face and back, wherein the side surfaces have a greater transverse extension than the back and / or the key face.

[0014] In particular, the ribbed key has a flat shape with parallel side surfaces and a narrower key back and key face. In particular, the ribbed key has a substantially rectangular cross-section. Preferably, the key back is opposite the key face, and the two key side surfaces are opposite each other. The two key side surfaces are preferably arranged parallel to each other. The distance between the two parallel key side surfaces is defined by the key back or the key face.

[0015] The two key side surfaces can have the same rib structure, or each can have a different rib structure. Preferably, the surface of the key back is flat and does not have any surface structures such as ribs, depressions, recesses, or the like.

[0016] The surface of the key back extends in two directions: a longitudinal direction of the key back and a transverse direction of the key back. The longitudinal direction of the key back corresponds to the insertion direction of the key; the transverse direction of the key back extends perpendicular to the longitudinal direction of the key back.

[0017] The surface of each of the two key side surfaces extends in two directions: a longitudinal direction of the key side surface and a transverse direction of the key side surface. The longitudinal direction of the key side surface corresponds to the insertion direction of the key; the transverse direction of the key side surface extends perpendicular to the longitudinal direction of the key side surface.

[0018] Preferably, the dimension of the key back in the transverse direction of the key back is smaller than the dimension of the key side surface in the transverse direction of the key side surface. In particular, the dimension of the key back in the transverse direction of the key back is less than 50%, preferably less than 30%, most preferably less than 20%, of the dimension of the key side surface in the transverse direction of the key side surface.

[0019] Preferably, the rocker interacts with only one of the two key side surfaces, or is arranged on only one side surface. Designs are also possible in which two rockers are provided, with one rocker being arranged on each of the two key side surfaces.

[0020] In particular, the rocker is not spring-mounted.

[0021] Preferably, the rib on a side surface of the rib key extends with its longitudinal extent approximately in the insertion direction of the key, or is arranged obliquely to the longitudinal extent of the key and has a narrower transverse extent than the longitudinal extent. In particular, the transverse extent of the rib is narrow compared to the transverse extent of one of the side surfaces. In particular, the dimension of the transverse extent of the rib is less than 30%, preferably less than 20%, most preferably less than 10%, of the dimension of the key side surface in the transverse direction of the key side surface.

[0022] In particular, the first rib section and the second rib section on the rib key can be aligned with one another such that together they form a single rib pattern. The alignment of the rib sections, or the pattern of the rib, can be inclined relative to the insertion direction of the key, in particular by an angle in the range of plus / minus 1 degree to plus / minus 40 degrees. In particular, the two rib sections can be arranged on the same rib of the rib key.

[0023] Preferably, when the ribbed key is fully inserted into the keyway, the rocker can be oriented such that one of the probes protrudes into the groove between the first ribbed section and the second ribbed section. Preferably, the rocker can be designed such that the rocker has direct contact exclusively with the ribbed key. This means that the rocker does not have direct contact with or engage the lock cylinder housing or a groove or recess in the lock cylinder housing.

[0024] In particular, it can be provided that the first probe and the second probe are identically shaped. For example, the first probe and the second probe can have the shape of a flat cylinder.

[0025] In particular, one embodiment can provide for the first rib section to have a bevel and the second rib section to have a bevel. The bevel is arranged at the front end of the rib section, pointing in the direction of the key tip. The front end is preferably the end of the rib or rib section facing away from the key blade.The bevels can be configured such that when the ribbed key is inserted into the keyway, the bevel of the first rib portion comes into contact with the second probe head and rotation of the rocker about the rotation axis causes the first probe head to enter the groove between the first rib portion and the second rib portion, and such that when the ribbed key is further inserted into the keyway, the bevel of the second rib portion comes into contact with the first probe head and rotation of the rocker causes the second probe head to enter the groove between the first rib portion and the second rib portion.

[0026] In particular, one embodiment can provide for the locking cylinder core to have a recess in which a rib detection pin is mounted so that it can move radially relative to the rotational axis of the locking cylinder core. The correct rib structure can be scanned using the rib detection pin to further increase copy protection.

[0027] It may be provided that the rib query pin has an end which is provided with a bevel and is configured to be radially displaced by the first rib portion upon insertion of the rib key into the key channel.

[0028] Accordingly, a housing pin can be movably mounted in the locking cylinder housing and the recess in which the ribbed interrogation pin is accommodated can be dimensioned such that partial retraction of the housing pin into the recess is possible.

[0029] In particular, the housing pin can be movably mounted, acted upon by a housing spring, with the housing spring applying radial pressure to the housing pin relative to the rotational axis of the locking cylinder core. This allows the housing pin to engage the rotating locking cylinder core and prevent its further rotation beyond a certain angle of rotation if the rib structure is missing or too small.

[0030] In particular, the rocker can be rotatably mounted on the locking cylinder core. The rocker can have a bearing pin that is received in the locking cylinder core in a recess corresponding to the bearing pin. Preferably, the bearing pin forms the axis of rotation of the rocker. The bearing pin of the rocker preferably engages with play in the recess of the locking cylinder core, thereby ensuring stable mounting of the rocker with respect to the locking cylinder core and, in particular, preventing jamming when inserting a key into the locking cylinder.

[0031] Furthermore, it can be provided that the recess for the bearing pin is designed in the form of a cylindrical bore in the cylinder core, with the cylinder axis of the recess being collinear with the axis of rotation of the rocker. This creates a bearing that is technically simple to manufacture.

[0032] Preferably, the rocker is not translationally displaceable and can only rotate about a single axis of rotation. Due to its mounting via bearing pins in the recess of the lock cylinder core, the rocker is preferably in direct contact with the lock cylinder core, and via the contact heads, it is in direct contact with the ribbed key. Preferably, the rocker has no direct contact with the lock cylinder housing.

[0033] In the following, the invention is explained by way of example with the aid of the accompanying drawings. Fig. 1a shows a rib key of the locking device according to the invention with correct rib milling. Fig. 1b shows the rib key with correct rib milling, inserted into the locking cylinder. Fig. 1c shows the rib key with correct rib milling in interaction with the rocker and the rib query pin. Fig. 1d shows a cross-section through the locking cylinder of the locking device according to the invention, into which the rib key with correct rib milling is inserted. Fig. 2a shows a rib key not according to the invention with a continuous rib. Fig. 2b shows the rib key with a continuous rib, inserted into the locking cylinder. Fig. 2c shows a cross-section through the locking cylinder, into which the rib key with the rib completely milled off is inserted. Fig. 3 shows the rib query pin. Fig. 4 shows the rocker. Fig. 5a shows the rib key with the correct rib milling, inserted into the lock cylinder, together with the rocker. Fig.Fig. 5b shows a cross-section through the locking cylinder of the locking device according to the invention, into which the ribbed key with the correct rib milling is inserted, with the section running through the bearing pin of the rocker. Fig. 6a shows a front view of the locking cylinder core. Fig. 6b shows a section through the locking cylinder core. .

[0034] The locking device comprises a locking cylinder and a ribbed key. The locking cylinder has a locking cylinder housing 4g and a locking cylinder core 4k. The locking cylinder core 4k is rotatably mounted in a bore of the locking cylinder core 4k, but is not axially displaceable. The locking cylinder core 4k has a keyway for inserting a ribbed key 1, wherein the keyway extends in the axial direction of the locking cylinder core 4k.

[0035] The ribbed key 1 has a key blade and a key shank. The key shank is provided with a key stop 1an. The key shank has two opposing key flanks and a key face. The key face is provided in a known manner with a plurality of notches, each of the notches interacting with one of the core pins 4ks of the lock cylinder core 4k, which are mounted radially displaceably in the lock cylinder core 4k, and each core pin 4ks interacting with one of the housing pins 4gs of the lock cylinder housing 4g, which are mounted radially displaceably in the lock cylinder housing 4g. On one of the key side surfaces or on the two

[0036] A rib is formed on the key side surfaces. The rib extends in the insertion direction of the ribbed key 1 and protrudes perpendicular to the insertion direction from the key side surface. The rib has a substantially rectangular cross-section.

[0037] In Fig. 4 The rocker 2 is shown. The rocker 2 is rotatably mounted in a recess of the locking cylinder core 4k. The rocker 2 has a rocker body with a base surface 2b. A first probe 21 and a second probe 22 protrude from the base surface 2b. A raised area protrudes from the rocker 2, which has the shape of a circular segment. The rocker 2 is designed such that the first probe 21 and the second probe 22 protrude into the keyway. The axis of rotation of the rocker is perpendicular to the base surface of the rocker and perpendicular to the key side surface of the ribbed key 1.

[0038] In Fig. 3The ribbed interrogation pin 3 is shown. The ribbed interrogation pin is mounted radially displaceably in a recess of the locking cylinder core 4k. The ribbed interrogation pin 3 has a bevel 3a and an end surface 3e.

[0039] The bevel 3a interacts with a rib of the rib key 1. If a suitable rib key is inserted into the keyway of the locking cylinder core 4k, a rib strikes the bevel 3a of the rib interrogation pin 3 with its front edge, causing the rib interrogation pin 3 to be displaced radially outward, i.e., away from the axis of the locking cylinder core 4k. When a suitable rib key 1 is fully inserted, the rib interrogation pin 3 is then displaced radially outward to such an extent that the end surface 3e is aligned with the outer circumference of the locking cylinder core 4k.

[0040] Fig. 5ashows the rib key 1 with the correct rib milling, inserted into the lock cylinder, together with the rocker 2. This figure shows the bearing pin 2z of the rocker 2. The bearing pin 2z is formed on the back of the rocker body. The back of the rocker body is the side of the rocker 2 facing away from the base surface 2b, or the side facing away from the two probe heads 21, 22.

[0041] Fig. 5bshows a cross-section through the locking cylinder of the locking device according to the invention, into which the ribbed key 1 with the correct rib milling is inserted, wherein the cross-section runs through the bearing pin 2z of the rocker 2. The bearing pin 2z is received in the recess 4a of the locking cylinder core 4k and defines the rotation axis D of the rocker. The rocker 2 is mounted in the recess 4a in such a way that the rocker 2 is rotatable exclusively about the rotation axis D. Otherwise, the rocker 2 is rigidly mounted on the locking cylinder core 4k.

[0042] Fig. 6a shows a front view of the locking cylinder core 4k. The ribbed key 1 is in Figure 6a not shown. This means that Fig. 6a shows the locking cylinder core 4k without the ribbed key 1 inserted. Fig. 6aprovides a view into the key channel of the locking cylinder core 4k. Two guide webs 4f are arranged in the key channel, which interact with the corresponding ribs 4r of the rib key 1. The two guide webs 4f run parallel to each other and form a guide channel 4ka, with the first rib section and the second rib section being guided between the two guide webs in the guide channel.

[0043] Fig. 6b shows a section through the locking cylinder core. The guide webs 4f of the locking cylinder core 4k run diagonally to the longitudinal extension of the locking cylinder core. As shown in the Figures 1a and 1c As shown, the first rib section 1r1 and the second rib section 1r2 extend obliquely to the insertion direction of the rib wrench. The inclination of the first rib section 1r1 and the second rib section is 2°.

[0044] The angle of inclination of the two guide webs 4f relative to the insertion direction is equal to the angle of inclination of the first rib section 1r1 and the second rib section 1r2 relative to the insertion direction. Due to the engagement of the first rib section 1r1 and the second rib section 1r2 in the guide channel 4ka, the rib key 1 is guided along its entire insertion path during insertion of the rib key 1 into the lock cylinder core 4k.

[0045] Due to the angle of inclination of the two guide webs 4f, or the angle of inclination of the first rib section 1r1 and the second rib section 1r2 relative to the insertion direction, the rib key 1 changes its radial position relative to the axis of the locking cylinder core 4k during insertion. However, the rib key 1 is always aligned straight during insertion into the locking cylinder core 4k.

[0046] In the following, a first example describes the insertion of a ribbed key 1 with a correct rib structure, i.e., a ribbed key 1. Here, the rib is not designed as a continuous rib. The rib structure has a first rib section and a second rib section, which are separated from each other by a groove. The groove can be a milled section. In a second example, the insertion of an incorrect ribbed key 1 is described, in which a continuous rib 1 is provided on the key side surface and no groove is present. First example: rib wrench with correct rib structure

[0047] A rib key 1 with correct rib milling is in Fig. 1ashown. On the key side surface of the ribbed wrench 1, a rib is provided that protrudes perpendicularly from the key side surface of the ribbed wrench 1. However, this rib is not formed as a continuous rib 1rd, but rather is formed from a first rib portion 1r1 and a second rib portion 1r2. The first rib portion 1r1 and the second rib portion 1r2 are separated by a groove. Here, the second rib portion 1r2 is arranged closer to the key tip than the first rib portion 1r1.

[0048] The lengths of the first rib section 1r1, the second rib section 1r2, and the groove are dimensioned such that the rib key 1 can be fully inserted into the keyway, and that when the rib key 1 is fully inserted into the keyway, the lock cylinder core 4k can be rotated within the lock cylinder housing 4g. Since the groove can be produced by a milling process, this configuration of the rib structure is referred to below as correct rib milling.

[0049] If the ribbed key 1 is inserted into the keyway of the lock cylinder housing 4g with the correct rib milling, the second rib section of the ribbed key 1 first comes into contact with the second probe head 22 of the two-armed rocker 2 during insertion of the ribbed key 1 into the keyway. The second rib section 1r2 is provided with a bevel 1a2, along which the second probe head 22 slides during insertion, resulting in a clockwise rotation of the rocker 2. After the second rib section 1r2 has passed the rocker 2, the rocker 2 is oriented by the preceding rotation such that the first probe head 21 enters the movement range of the first rib section 1r1. Upon further insertion of the ribbed key 1 into the keyway, the first rib section 1r1 meets the first probe head 21.The first rib section 1r1 is provided with a bevel 1a1, along which the first probe head 21 slides, causing the rocker 2 to rotate counterclockwise. This rotation of the rocker 2 causes the second probe head 22 to reach the area of the rib milling between the first rib section 1r1 and the second rib section 1r2.

[0050] When inserting the ribbed key 1 into the keyway, the second rib portion 1r2 strikes the ribbed query pin 3. The ribbed query pin 3 is provided with a bevel 3a so that the ribbed query pin 3 is displaced radially outwards, ie away from the central axis of the lock cylinder core 4k, when the second rib portion 1r2 strikes the bevel 3a of the ribbed query pin 3 when inserting the ribbed key 1 into the keyway.

[0051] Finally, the key stop 1an of the ribbed key 1 comes into contact with the lock cylinder core 4k, whereby the ribbed key 1 is completely inserted into the lock cylinder core 4k. This fully inserted position is in Fig. 1b shown.

[0052] In this fully inserted position of the rib key 1, the second rib section 1r2 rests against the rib interrogation pin 3 such that an upper side 3o of the rib interrogation pin 3 is aligned with the outer circumference of the locking cylinder core 4k. This ensures that upon rotation of the locking cylinder core 4k, the housing pins 4gs of the locking cylinder housing 4g can slide off the locking cylinder core 4k or the upper side of the rib interrogation pin 3, enabling a complete rotation of the locking cylinder core 4k within the cylinder housing 4g. Second example: rib wrench with continuous rib

[0053] A rib key 1 with a continuous rib 1rd, ie a rib key 1 without rib milling, is in Fig. 2a shown. If the ribbed key 1 is inserted into the keyway of the lock cylinder housing 4g without rib milling, i.e. with a continuous rib 1rd, the continuous rib 1rd first comes into contact with the first probe head 21 of the two-armed rocker 2 during insertion of the ribbed key 1 into the keyway.

[0054] As the ribbed key 1 is further inserted into the keyway, the first probe 21 then strikes the front edge of the continuous rib 1rd, which leads to a rotation of the rocker 2. As a result of this rotation of the rocker 2, the first probe 21 rests against the lower edge of the rib. At the same time, the rocker 2 is rotated so that the second probe 22 protrudes into the movement range of the continuous rib 1rd. As the ribbed key 1 is further inserted into the keyway, the front edge of the continuous rib 1rd comes into contact with the second probe 22 of the rocker 2. This hinders further insertion of the ribbed key 1, since the second probe 22 of the rocker 2 rests against the front edge of the rib and the first probe 21 of the rocker rests against the lower edge of the rib.

[0055] This is in Fig. 2bThe rib key 1 cannot be fully inserted into the keyway because the front edge of the continuous rib 1rd rests against the second probe head 22 of the rocker. Fig. 2b It can also be seen that the continuous rib 1rd is not in contact with the rib interrogation pin 3 because the rib key 1 is not fully inserted into the keyway. Rotation of the lock cylinder core 4k is not possible because the rib key 1 is not fully inserted into the keyway. Third example: rib wrench with completely milled rib

[0056] Fig. 2cshows a cross-section through the locking cylinder, into which the ribbed key with its completely milled rib is inserted. In this case, it is possible to insert the ribbed key into the keyway as far as it will go, since the rocker 2 does not block the insertion of the ribbed key. Rotation of the locking cylinder core 4k is possible, at least within a certain angular range. However, upon rotation of the locking cylinder core 4k, the area of the locking cylinder core 4k in which the ribbed interrogation pin 3 is mounted moves into the area of the locking cylinder housing 4g in which the housing pins 4gs are mounted. One of the housing pins 4gs, urged by the housing spring 4gf associated with the housing pin 4gs, can retract into the receptacle of the locking cylinder core 4k associated with the ribbed interrogation pin 3. This prevents further rotation of the locking cylinder core 4k. List of reference symbols

[0057] DRotation axis 1Ribbed key 1a1Bevel of the first rib section 1a2Bevel of the second rib section 1r1First rib section 1r2Second rib section 1rdContinuous rib 1anKey stop 1reiKey blade 2Rocker 2bBase surface of the rocker 21First probe 22Second probe 2zBearing journal of the rocker 3Rib query pin 3aBevel of the rib query pin 3eEnd surface of the rib query pin 4aLocking cylinder recess 4kLocking cylinder core 4kaGuide channel 4fGuide bar 4gLocking cylinder housing 4ksCore pin 4gsHousing pin 4gfHousing spring

Claims

1. A locking device comprising a ribbed key (1) and a lock cylinder, wherein the ribbed key (1) has a key back, two key side surfaces and a key face, wherein the lock cylinder has a lock cylinder housing (4g) and a lock cylinder core (4k) rotatably mounted in the lock cylinder housing (4g), wherein the lock cylinder core (4k) has a key channel into which the ribbed key (1) can be inserted, wherein a rocker (2) is rotatably mounted about a rotation axis (D) in the lock cylinder core (4k), wherein the rocker (2) comprises a first probe head (21) and a second probe head (22), wherein the first probe head (21) and the second probe head (22) protrude into the key channel, wherein the rocker (2) is configured,that when the ribbed key (1) is inserted into the keyway, the rocker (2) is rotated about the rotation axis (D) due to the contact of the ribbed key with at least the first probe head (21) and the second probe head (22), , characterized by that the axis of rotation (D) of the rocker (2) is oriented perpendicular to the key side surface of the ribbed key (1), that on that of the key side surfaces which faces the rocker (2), a first rib section (1r1) and a second rib section (1r2) are arranged, which are separated from one another by a groove.

2. Locking device according to claim 1, characterized by that the first rib section (1r1) and the second rib section (1r2) on the rib key are arranged in alignment with one another in such a way that they together form a single rib pattern.

3. Locking device according to claim 1 or 2, characterized by thatwhen the ribbed key (1) is fully inserted into the keyway, the rocker (2) is oriented such that one of the probe heads (21, 22) projects into the groove between the first ribbed section (1r1) and the second ribbed section (1r2), wherein the rocker (2) is preferably designed such that the rocker (2) has direct contact exclusively with the ribbed key (1).

4. Locking device according to one of the preceding claims, characterized by that the first probe head (21) and the second probe head (22) are identically shaped.

5. Locking device according to claim 4, characterized by that the first probe head (21) and the second probe head (22) have the shape of a flat cylinder.

6. Locking device according to one of the preceding claims, characterized by thatthe first rib section (1r1) has a bevel (1a1) and the second rib section (1r2) has a bevel (1a2), wherein the bevels (1a1, 1a2) are configured such that when the rib key (1) is inserted into the keyway, the bevel (1a1) of the first rib section (1r1) comes into contact with the second probe head (22) and a rotation of the rocker (2) causes the first probe head (21) to enter the groove between the first rib section (1r1) and the second rib section (1r2), and that upon further insertion of the ribbed key (1) into the keyway, the bevel (1a2) of the second rib portion (1r2) comes into contact with the first probe head (21) and rotation of the rocker (2) causes the second probe head (22) to enter the groove between the first rib portion (1r1) and the second rib portion (1r2).

7. Locking device according to one of the preceding claims, characterized by thatthe locking cylinder core (4k) has a receptacle in which a ribbed interrogation pin (3) is mounted so as to be movable radially to the axis of rotation of the locking cylinder core (4k).

8. Locking device according to claim 7, characterized by that the rib query pin (3) has an end which is provided with a chamfer (3a) and is configured to be radially displaced by the first rib portion (1r1) upon insertion of the rib key (1) into the key channel.

9. Locking device according to claim 8 characterized by that a housing pin (4gs) is movably mounted in the locking cylinder housing (4g) and the receptacle in which the rib query pin (3) is accommodated is dimensioned such that partial retraction of the housing pin (4gs) into the receptacle is possible.

10. Locking device according to claim 9 characterized by thatthe housing pin (4gs) is movably mounted by a housing spring (4gf), wherein the housing spring (4gf) acts on the housing pin (4gs) radially to the axis of rotation of the locking cylinder core (4k).

11. Locking device according to one of the preceding claims, characterized by that the rocker (2) has a bearing pin (2z), the locking cylinder core (4k) has a recess (2a) corresponding to the bearing pin (2z), the bearing pin (2z) is received in the recess (2a), whereby the rocker (2) is rotatably mounted in the locking cylinder core (4k) and an extension direction of the recess (2a) defines the axis of rotation (D) of the rocker (2).

12. Locking device according to claim 11 characterized by that the recess (2a) is in the form of a cylindrical bore and the cylinder axis of the recess (2a) is collinear with the axis of rotation (D) of the rocker (2).

13. Locking device according to one of the preceding claims, characterized by that the first rib section (1r1) and the second rib section (1r2) are arranged obliquely to the insertion direction of the rib key (1), in particular are arranged inclined by an angle in the range of plus / minus 1° to plus / minus 30°, preferably by plus / minus 2° to plus / minus 20°, most preferably plus / minus 2° relative to the insertion direction.

14. Locking device according to claim 13, characterized by that at least one guide web (4f) is arranged in the locking cylinder core (4k), which guide web cooperates with the first rib section (1r1) and with the second rib section (1r2), wherein the at least one guide web (4f) is arranged obliquely with respect to the insertion direction of the rib key (1), wherein the angle of inclination of the at least one guide web (4f) with respect to the insertion direction is equal to the angle of inclination of the first rib section (1r1) and the second rib section (1r2) with respect to the insertion direction.

15. Locking device according to claim 14, characterized by that two guide webs (4f) are arranged in the locking cylinder core, which are aligned parallel to one another and thereby form a guide channel (4ka), wherein the first rib section (1r1) and the second rib section (1r2) are guided between the two guide webs (4f) in the guide channel (4ka).

Images