Magnetically coded lock

Abstract

The invention relates to a lock (20, 120, 220, 320, 420), in particular a cam lock, comprising a lock housing (22, 122, 222, 422) and a lock core (26, 126, 226, 326, 426) rotatably mounted in the lock housing (22, 122, 222, 422). The lock core (26, 126, 226, 326, 426) is designed for attaching a wrench (2, 102, 202, 302, 402), in particular a socket wrench, so as to transmit a torque at a first end (38, 138, 238) which can be accessed from the front face (28, 128, 228) of the lock (20, 120, 220, 320, 420), wherein the lock (20, 120, 220, 320, 420) has blocking means (52, 152, 252, 352, 452) which block a rotation of the lock core (26, 126, 226, 226, 426) in the lock housing (22, 122, 222, 422) between an open position and a closed position when the wrench (2, 102, 202, 302, 402) is removed, and the blocking means (52, 152, 252, 352, 452) are designed to release a rotation of the lock core (26, 126, 226, 326, 426) in the lock housing (22, 122, 222, 422) between the open position and the closed position when a wrench (2, 102, 202, 302, 402), in particular a socket wrench, comprising a specified magnet assembly (12, 112, 212, 312, 412) is attached onto the first end (38, 138, 238) of the lock core (26, 126, 226, 326, 426). The invention additionally relates to a wrench (2, 102, 202, 302, 402) and to a lock system (80, 180, 280, 380, 480).

Description

[0001] Magnetically coded closure

[0002] The present invention relates to a closure, in particular a cam lock, comprising a closure housing and a locking core rotatably mounted in the closure housing. The locking core is designed at a first end accessible from a front side of the closure for the torque-transmitting insertion of a key, in particular a plug-in key, and the closure has locking means which, when the key is removed, block rotation of the locking core in the closure housing between an open position and a closed position. The invention further relates to a key, in particular a plug-in key, for such a closure and to a closure system, in particular a cam lock system, comprising such a closure and such a key.

[0003] Locks such as cam locks and the like are used in the state of the art as industrial fittings, for example, for locking thin-walled sheet metal doors. Simple cam locks have a lock contour on the locking core, for example, in the form of a square or a square recess, for inserting a key with a corresponding key contour, for example, a key with a square hollow contour or a square recess.

[0004] Square contour, so that high torques can be transferred from the slip-on key to the locking core and thus to the rotary tongue. In this way, the often quite high friction forces in cam locks between the rotary tongue and a locking surface of a frame surrounding the sheet metal door, which is engaged behind the rotary tongue, can be overcome when the cam lock is opened or closed. The disadvantage of such cam locks is the low level of security against unauthorized operation, since such cam locks can be opened or closed quite easily even without a suitable slip-on key, for example with pliers. Furthermore, cam locks are known from the prior art in which a conventional cylinder lock is integrated.Such a conventional cylinder lock has a locking core with a keyway, with movable locking elements such as locking plates (in plate cylinders), locking discs (in disc cylinders), or locking pins (in pin cylinders) blocking the rotation of the locking core in the lock housing if the locking elements are not mechanically moved into a specific position by the key contour of a suitable key inserted into the keyway. This achieves a high level of security against unauthorized operation. However, conventional cylinder locks are more sensitive than snap-on key locks and therefore less robust under adverse environmental conditions. They also require lock covers to prevent contamination of the delicate keyway or the movable locking elements with dust and dirt, which complicates the handling of the locks.In addition, due to their low leverage and the delicate mechanics of conventional cylinder locks, only very low torques can be transmitted with standard cylinder keys, which limits their use with cam locks, which, as described above, sometimes require high torques for opening and closing.

[0005] In order to transmit high torques despite the use of a conventional cylinder lock, it is also known to provide a separate rotary handle for opening or closing the cam lock in addition to the cylinder lock for unlocking. However, such cam locks have the disadvantage of increased operating complexity and require significantly more installation space.

[0006] Against this background, the present invention is based on the object of proposing a closure, in particular a cam lock, a key for such a closure and a locking system which overcomes at least one or some of the disadvantages of the prior art described above.The above-mentioned object is achieved according to the invention by a closure, in particular a cam closure, with a closure housing and with a locking core rotatably mounted in the closure housing, wherein the locking core is designed at a first end accessible from a front side of the closure for the torque-transmitting insertion of a key, in particular a plug-in key, and wherein the closure has locking means which, when the key is removed, block rotation of the locking core in the closure housing between an open position and a closed position, wherein the locking means are designed to release rotation of the locking core in the closure housing between the open position and the closed position when a key, in particular a plug-in key, with a predetermined magnet arrangement is inserted onto the first end of the locking core.

[0007] In this way, a robust and compact lock, in particular a cam lock, is provided, to whose locking core preferably high or higher torques can be transmitted by inserting and turning a key and which at the same time offers a certain basic security against opening or closing without a suitable key.

[0008] The lock can, in particular, be a cam lock. In this case, the locking core preferably carries a rotary tongue at a second end. The rotary tongue can, in particular, be detachably connected to the locking core. The lock can then preferably transmit high or relatively high torques to the rotary tongue, for example, to lock it behind a counter surface or to move it out of a locked position behind a counter surface.

[0009] It is also conceivable for the lock to be a bar lock, for example, a door bar lock. In this case, a second end of the locking core is preferably coupled to one or more bars in such a way that a rotary movement of the locking core is converted into a pushing movement of the one or more bars. For example, the locking core can carry a gear at the second end, which meshes with a corresponding section, for example, a rack section, of a bar of the bar lock.

[0010] It is also conceivable for the closure to be an axial closure. In this case, a second end of the locking core can be provided with, for example, an axially movable contour that can be moved into a corresponding contour, for example, on a frame, for locking and / or moved out of the contour for unlocking. Furthermore, it is conceivable for the second end of the locking core to have a contour, for example, a screw or bayonet contour, that can be turned into a corresponding contour, for example, on a frame, for locking and / or turned out of the contour for unlocking. Combinations of these configurations are also conceivable.

[0011] It is also conceivable for the lock to be designed in the form of a profile cylinder. For this purpose, the lock housing, in particular, can have the shape of a profile cylinder. This allows the lock to be used instead of a conventional cylinder lock, for example, instead of a plate cylinder, disc cylinder, or pin cylinder. In particular, the lock can be easily installed in locking devices for profile cylinders. Such a lock in the form of a profile cylinder preferably has a locking lug that is non-rotatably connected to the locking core.

[0012] Because the locking means are designed to release the rotation of the locking core in the lock housing between the open position and the closed position when a key with a predetermined magnet arrangement is placed on the first end of the locking core, a magnetic unlocking function is provided, so that the key contour and the corresponding lock contour of the locking core can be optimized in geometric and mechanical terms, preferably for the transmission of high torques, for example, can be designed to be more robust.

[0013] In contrast, in conventional cylinder locking systems, the shape of the cylinder lock key and the key channel of the cylinder lock that accommodates the key are mechanically complex in order to achieve a mechanical unlocking function, which means that only very low torques can be transmitted.

[0014] The locking core is designed at a first end accessible from the front of the lock for the torque-transmitting insertion of a key. In this way, the locking core can be actuated by inserting a suitable key when the locking means permit rotation of the locking core.

[0015] The first end of the locking core is preferably designed in particular such that a suitable key can be positively attached to the first end of the locking core, enabling torque transmission from the key to the locking core with respect to the locking core's rotational axis. In this way, the locking core can be actuated by the key. Attaching the key can also involve inserting a protruding part of a key contour of the key, for example, a polygonal contour, into a corresponding recess at the first end of the locking core.

[0016] The locking means are designed such that, when the key is removed, they block rotation of the locking core in the lock housing between an open position and a closed position. The locking means can, for example, be designed to block rotation of the locking core in the lock housing from the open position to the closed position when the key is removed. Additionally or alternatively, the locking means can, for example, be designed to block rotation of the locking core in the lock housing from the closed position to the open position when the key is removed. It is not necessary, although conceivable, for the locking means to prevent any rotation of the locking core in the lock housing when the key is removed.In particular, a design is conceivable in which the locking core can be moved, for example, from an intermediate position between the open position and the closed position into the open position or into the closed position even when the key is removed, and the locking means only engage when the open and / or closed position is reached.

[0017] The locking means are designed to release the rotation of the locking core in the lock housing between the open position and the closed position when a key with a predetermined magnet arrangement is inserted onto the first end of the locking core. The locking means are therefore particularly configured for magnetic interaction with the predetermined magnet arrangement, which releases the rotation of the locking core.

[0018] By adapting the locking means to a predefined magnet arrangement of a key, the lock is magnetically coded. Operating the lock therefore requires the use of a matching key with the predefined magnet arrangement, whereas operating the lock with a key without a magnet arrangement or with a magnet arrangement deviating from the predefined magnet arrangement is only possible to a limited extent, for example only in intermediate positions between the open position and the closed position, or not at all. The predefined magnet arrangement therefore determines the design of the lock. Although the magnet arrangement itself is not part of the lock, the lock's locking means are specifically adapted to the predefined magnet arrangement, so that inserting a matching key with the predefined magnet arrangement causes the locking means to release the rotation of the locking core.The aforementioned object is further achieved according to the invention by a key, preferably a slip-on key, in particular for the previously described closure or an embodiment thereof. The key has a handle part and a slip-on part, which can also be formed as a single piece. The slip-on part has a key contour, in particular a polygonal contour, for torque-transmitting insertion onto a locking core of a closure, in particular of the previously described closure or an embodiment thereof. Furthermore, the key has a magnet arrangement on the slip-on part, in particular for magnetic interaction with locking means of a closure, in particular of the previously described closure or an embodiment thereof.

[0019] The key is, in particular, a socket key, for example, a polygonal key. The key can, in particular, have an outer and / or inner contour, for example, a polygonal contour, with which the key can be plugged onto a corresponding counter-contour, in particular the inner and / or outer contour, of a lock. An example of a socket key with an outer contour is a key with an outer square. An example of a socket key with an inner contour is a key with an inner square. It is also conceivable for a key to have both an outer and an inner contour.

[0020] Furthermore, the above-mentioned object is achieved according to the invention by a locking system, in particular a cam lock system, with the lock described above or an embodiment thereof and with a key matching the lock, in particular the key described above or an embodiment thereof.

[0021] The key of the locking system is a key that fits the lock of the locking system. For this purpose, the key and the lock are adapted to one another in particular such that the locking core is designed at the first end for the torque-transmitting insertion of the key and that the locking means of the cam lock are configured to release the rotation of the locking core in the lock housing between the open position and the closed position when the key is inserted onto the first end of the locking core. In particular, the magnet arrangement of the key is the predetermined magnet arrangement for which the locking means are designed to release the rotation of the locking core in the lock housing between the open position and the closed position when a key with this predetermined magnet arrangement is inserted onto the first end of the locking core.

[0022] Various embodiments of the lock, the key, and the locking system are described below. The individual embodiments apply independently to the lock, the key, and the locking system. Furthermore, the individual embodiments can be combined with one another as desired.

[0023] In one embodiment, the locking core has a lock contour, in particular a polygonal contour, at the first end for the torque-transmitting insertion of a key, preferably a plug-in key, in particular a polygonal key. Such a lock contour allows for the transmission of preferably high or relatively high torques when inserting a plug-in key with a corresponding key contour. Furthermore, such lock contours for plug-in keys are very robust compared to the keyways of conventional cylinder lock systems, particularly under adverse, such as dusty, environmental conditions. The lock contour can, in particular, have one or more recesses and / or one or more projections.

[0024] The lock contour of the locking core is designed for the torque-transmitting insertion of a key. Accordingly, the lock contour is specifically designed so that when a corresponding key is inserted, the lock contour forms a positive connection with the key contour for torque transmission.

[0025] The lock contour can, for example, have a recess, for example a multi-edge recess, for accommodating a corresponding projection, for example a multi-edge projection, of the key contour of an associated key. Furthermore, the lock contour can, for example, have a projection, for example a multi-edge projection, for accommodating a corresponding recess, for example a multi-edge recess, of the key contour of an associated key.

[0026] The locking core can also have a contoured part with a lock contour, in particular an outer contour, wherein the contoured part can project laterally beyond the lock housing at the first end, for example. The key can accordingly have a key contour, in particular an inner contour, adapted to the lock contour.

[0027] Preferably, the contoured part is flat and is bordered by an outer contour at the edge, which forms the lock contour. This allows for a very flat design of the lock contour. This prevents, for example, a user from getting caught on a protruding part of the lock contour. Furthermore, this reduces the risk of tampering.

[0028] Accordingly, the key can preferably have an inner contour that defines a flat region in which, for example, the magnet arrangement or one or more magnets thereof can be arranged. In this way, a robust key with a flat design can be provided.

[0029] The lock contour, for example, the outer contour, and / or the key contour, for example, the inner contour, can also be rounded, preferably in the shape of an oval. This improves the tamper-proof nature of the lock, as the rounded shape of the lock contour reduces the number of points of attack for foreign tools, such as pliers.

[0030] The lock contour and / or the key contour are preferably designed asymmetrically in such a way that the lock contour allows a key with the corresponding key contour to be placed in only one orientation.

[0031] In one embodiment, the predetermined magnet arrangement comprises a predetermined number of magnets, each with a predetermined position. In a further embodiment, the predetermined magnet arrangement comprises a predetermined number of magnets, each with a predetermined position and each with a predetermined pole orientation. Preferably, the magnet arrangement comprises two or more magnets, each with a predetermined position and optionally with a predetermined pole orientation. More preferably, at least two magnets of the magnet arrangement have different pole orientations, preferably antiparallel pole orientations. Furthermore, two magnets of the magnet arrangement can have respective pole orientations that are aligned at an angle to one another, for example at a right angle.In a corresponding embodiment of the key, the magnet arrangement comprises one or more magnets arranged at a respective position, wherein preferably at least two magnets have different pole orientations, particularly preferably pole orientations aligned antiparallel to one another.

[0032] By specifying a specific number of magnets, each with a specific position and optionally a specific polarity for the magnet arrangement, the security of the lock against unauthorized operation can be improved. In particular, this allows different magnet arrangements to be implemented for keys of the same geometry, allowing a key to be magnetically coded for a corresponding lock. This allows the corresponding lock to be unlocked with the corresponding key, but not a lock that requires a differently magnetically coded key.In one embodiment, the locking means comprise a locking element that is displaceably mounted between a locking position, in which the locking element blocks the rotation of the locking core in the breech housing between the open position and the closed position, and a release position, in which the locking element releases the rotation of the locking core in the breech housing between the open position and the closed position. In this way, the rotation of the locking core can be selectively blocked or released in a simple and reliable manner. Preferably, the locking element is designed to interact positively with the breech housing and the locking core in the closed position such that rotation of the locking core in the breech housing is blocked.

[0033] Preferably, the locking means comprise a plurality of locking elements which are displaceably mounted between a respective locking position in which the locking elements block the rotation of the locking core in the lock housing between the open position and the closed position, and a respective release position in which the locking elements release the rotation of the locking core in the lock housing between the open position and the closed position.

[0034] The one or more locking elements can, for example, be mounted so as to be displaceable axially and / or radially with respect to the axis of rotation of the locking core.

[0035] Preferably, both one or more axially movable locking elements and one or more radially movable locking elements are provided. This ensures good vibration resistance of the locking mechanism and also increases security against tampering.

[0036] In one embodiment, the locking core has a receptacle in which the locking element is slidably mounted. If there are multiple locking elements, the locking core preferably has several receptacles, each of which slidably mounts a locking element. This allows for a particularly compact design of the closure. The receptacle can be formed, for example, by a blind hole or through-hole in the locking core, or by an edge-side receptacle that is at least partially formed by the locking core.

[0037] In a further embodiment, the breech housing has a receptacle in which the locking element is slidably mounted. If there are multiple locking elements, the breech housing preferably has several receptacles, each of which slidably mounts a locking element. This allows for a particularly robust design of the breech.

[0038] Furthermore, a locking element can also be slidably mounted in a receptacle formed by both the locking core and the locking housing. This is conceivable, for example, with multi-part locking elements.

[0039] If one or more receptacles are arranged in the locking housing, preferably one or more associated recesses are provided in the locking core, into which the locking elements engage in the locked position, thus blocking any rotational movement between the locking core and the locking housing. If one or more receptacles are arranged in the locking core, preferably one or more associated recesses are provided in the locking housing, into which the locking elements engage in the locked position, thus blocking any rotational movement between the locking core and the locking housing.

[0040] In one embodiment, the locking means comprise a plurality of locking elements which are mounted in respective receptacles in the lock housing and / or the lock core, said receptacles being arranged around the rotational axis of the lock core, and which, in the locked position, engage in a respective associated recess in the lock core and / or the lock housing. Preferably, at least two, preferably all, of the receptacles and / or associated recesses arranged around the rotational axis of the lock core are at different distances from the rotational axis of the lock core. In this way, it can be prevented that a locking element arranged in a receptacle dips into a recess different from the recess associated with the receptacle when the lock core is rotated, thus blocking the rotational movement between the lock core and the lock housing.

[0041] The locking means, in particular the one or more locking elements, are preferably arranged at a distance from the lock contour, preferably such that the locking means, in particular the one or more locking elements, do not have direct contact with the attached key when a key is placed on the first end of the locking core. Preferably, the one or more receptacles and / or associated recesses are spaced from the lock contour.

[0042] In one embodiment, the closure has a holding element which is designed to hold the locking element in the closed position when the key is removed through magnetic interaction, in particular between the holding element and the locking element. In this way, the vibration resistance of the closure is increased, so that even in the event of mechanical vibrations or shaking, the locking elements are securely held in the closed position when the key is removed, thus preventing the closure from opening or closing when the key is removed. In the case of multiple locking elements, the holding element can preferably be designed to hold the multiple locking elements in the closed position when the key is removed through magnetic interaction between the holding element and the locking element.

[0043] The magnetic interaction between the holding element and the locking element or the plurality of locking elements is preferably a magnetically attractive interaction. However, it is also conceivable for the magnetic interaction between the holding element and the locking element or the plurality of locking elements to be a magnetically repulsive interaction. For example, the locking element can be a magnet or comprise a magnet, and the holding element can also be a magnet or be made of a ferromagnetic material, for example, a ferromagnetic metal plate, for example, a steel plate, or a ferromagnetic pin, for example, a steel pin.

[0044] In one embodiment, the locking element is designed to be moved into the release position when a key with the predetermined magnet arrangement is placed onto the first end of the locking core, specifically through magnetic interaction, in particular magnetic repulsion, between the locking element and the magnet arrangement. In the case of a plurality of locking elements, the locking elements are preferably designed to be moved into the release position when a key with the predetermined magnet arrangement is placed onto the first end of the locking core, specifically through magnetic interaction, in particular magnetic repulsion, between the locking elements and the magnet arrangement. Unlocking by means of magnetic repulsion between the magnet arrangement and the one or more locking elements enables a reliable and smooth unlocking mechanism.

[0045] Preferably, the magnet arrangement has an associated magnet for each blocking element, particularly preferably an associated respective magnet.

[0046] In one embodiment, the locking element is a magnet or comprises a magnet. If there are multiple locking elements, at least one, preferably several of the locking elements are magnets or comprise a magnet. In this way, the locking element can be held in the locked position, for example, by magnetically attractive interaction with a provided holding element when the key is removed. Furthermore, the locking element can be moved into the release position in this way, for example, by magnetically repulsive interaction with a magnet of the magnet arrangement of a key when the key is inserted onto the first end of the lock core.

[0047] The locking element can, in particular, comprise a magnet and a sleeve, particularly a metal sleeve, surrounding the magnet. This achieves greater shear force resistance of the locking element when blocking rotation of the locking core in the lock housing, thereby increasing the longevity of the lock.

[0048] The locking element can also be constructed in several parts, for example, comprising a magnet and a magnetically connected steel pin. The steel pin, in a locked position, causes the locking core to rotate in the lock housing. This can also increase the longevity of the lock.

[0049] In one embodiment, the lock has a contact surface arrangement for contacting the predetermined magnet arrangement, and the blocking means are arranged and designed such that the blocking means release the rotation of the locking core in the lock housing between the open position and the closed position when the predetermined magnet arrangement comes into contact with the contact surface arrangement, in particular in a predetermined orientation. This makes handling of the lock easier, since the user can check that the key is correctly seated on the lock by checking that it is in contact with the contact surface arrangement. Furthermore, by the magnet arrangement being in contact with the contact surface arrangement, the distance between the magnet arrangement and the blocking means can be kept as small as possible in order to reinforce the magnetic interaction between the magnet arrangement and the blocking means.

[0050] The contact surface arrangement can, in particular, have one or more contact surfaces intended for the engagement of one or more magnets of the magnet arrangement. The contact surface arrangement is, in particular, arranged such that the magnet arrangement comes into contact with the contact surface arrangement when the key is inserted. The one or more contact surfaces of the contact surface arrangement can, in particular, be arranged at the first end of the locking core and / or on the lock housing.

[0051] If the blocking means comprise one or more blocking elements, the blocking elements are preferably arranged in the region of the one or more contact surfaces of the contact surface arrangement, so that when the magnet arrangement is in contact, a magnetic interaction occurs between the magnet arrangement and the blocking elements, by means of which the blocking elements are moved into the release position.

[0052] In one embodiment, the contact surface arrangement is arranged completely or at least partially separate from the lock contour, for example, offset radially outward or inward relative to the rotational axis of the locking core. In a corresponding embodiment of the key, the magnet arrangement is arranged completely or at least partially outside the key contour. In this way, the unlocking function can be structurally separated from the torque transmission function, thereby achieving a more robust design of the lock and the key.

[0053] In one embodiment, the contact surface arrangement is arranged at least partially on the lock contour, preferably on an inner surface of a receptacle of the lock contour. In a corresponding embodiment of the key, the magnet arrangement is arranged at least partially on the key contour. In this way, the lock can be better protected against manipulation by magnets held from the outside.

[0054] In one embodiment, the locking core is constructed in several parts and comprises a core part arranged in the inner channel of the lock housing and a contoured part with the lock contour, wherein the core part and the contoured part are connected to one another in a rotationally fixed manner. For this purpose, the core part and the contoured part can, for example, have corresponding contours with which the core part and the contoured part engage in a form-fitting manner. The core part and the contoured part can be held together, for example, by a pin or a screw, for example by means of a screw running through the core part and screwed into an inner contour of the contoured part.

[0055] Due to the multi-part design of the locking core, in particular with a core part and a contour part, it is possible, for example, to provide the lock with a desired lock contour as required by selecting a suitable contour part from several different contour parts.

[0056] In one embodiment, the key has a wall thickness of at least 4 mm. Preferably, the key contour of the key has a wall thickness of at least 4 mm. This allows for higher torque transmissions with the key. Preferably, the lock contour is designed to accept a key contour with a wall thickness of at least 4 mm.

[0057] The key is preferably made at least partially of metal, which enables high torque transmissions. The handle part of the key preferably extends at least 2 cm, more preferably at least 3 cm, and particularly preferably at least 4 cm, transversely to the axis of rotation of the key intended for actuation of the key. In this way, the user can more easily transmit higher torques to the key and thus, when the key is attached to a locking core of a lock, to the locking core. Further features and advantages of the lock, the key, and the locking system will become apparent from the following description of exemplary embodiments, with reference to the accompanying drawings.

[0058] In the drawing show

[0059] Fig. la-g a first embodiment of the lock, the key and the locking system,

[0060] Fig. 2a-g a second embodiment of the lock, the key and the locking system,

[0061] Fig. 3a-l a third embodiment of the lock, the key and the locking system,

[0062] Fig. 4a-e a fourth embodiment of the lock, the key and the locking system and

[0063] Fig. 5a-e a fifth embodiment of the lock, the key and the locking system.

[0064] Figures 1a-g show a first embodiment of the lock, the key and the locking system. Fig. 1a shows the key 2 in a perspective view obliquely from above. Fig. 1b shows the key 2 in a perspective partial view obliquely from below. Fig. 1c shows the lock 20 in a perspective view obliquely from above and from the front. Fig. 1d shows the lock 20 with the key 2 attached in a perspective view obliquely from above and from the front. Figs. 1e and 1f show the lock 20 and the key 2 in a sectional view, before the key 2 is attached to the lock 20 (Fig. 1e) and after (Fig. 1f). Fig. 1g shows the lock 20 with the key 2 attached in an installed situation in a side view.

[0065] The key 2 and the lock 20 together form a locking system 80.

[0066] In the present example, the closure 20 is designed as a cam lock, and the locking system 80 is designed as a cam lock system. Alternatively, the closure 20 could also be designed as a rod lock or axial lock, and the locking system 80 could be designed as a rod lock system or axial lock system.

[0067] The key 2 is a socket wrench with a handle part 4 and a socket part 6, which in the present example are formed as a single piece. The socket part has a key contour 8, which in the present example is designed as a polygonal contour, namely as a square projection. However, other key contours 8 are also conceivable. The socket part 6 of the key has a collar 10 surrounding the key contour 8 with a magnet arrangement 12 comprising several magnets 14 with a predetermined position and predetermined pole orientation. The pole orientation of the individual magnets is indicated in Fig. 1b by "N" and "S" respectively, whereby an area designated "N" in Fig. 1b corresponds to the magnetic north pole and an area designated "S" in Fig. 1b corresponds to the magnetic south pole.In Fig. 1e-f, the polar orientation of the magnets shown therein is also marked by "N" and "S", where "N" indicates the arrangement of the magnetic north pole and "S" indicates the arrangement of the magnetic south pole of the respective magnet. The magnets 14 visible in Fig. 1e-f and marked "N" and "S" have polar orientations that are antiparallel to each other.

[0068] The cam lock 20 has a lock housing 22 with an inner channel 24 in which a locking core 26 is rotatably mounted about the axis A. The lock housing 22 has a collar 30 on the front side 28 of the cam lock 20, from which a housing body 32 with an external thread 34 extends.

[0069] For assembly, the cam lock 20 can be inserted, with the housing body 32 facing forward, into an opening 90 of a thin sheet metal door 92 until the collar 30 comes into contact with the sheet metal door 92. A nut 36 can then be screwed onto the external thread 34 from behind to fix the cam lock 20 to the sheet metal door 92.

[0070] The locking core 26 is designed at the first end 38 accessible from the front side 28 for the torque-transmitting insertion of the key 2. For this purpose, the locking core 26 has at its first end 38 a lock contour 40 corresponding to the key contour 8, which in this case is designed as a polygonal contour, namely as a square recess for receiving the key contour 8 designed as a square projection.

[0071] At the second end 42 of the locking core 26, opposite the first end 38, the locking core 26 carries a rotary tongue 44, which is connected to the locking core 26 in a rotationally fixed manner via corresponding contours 46, 48 on the locking core 26 and the rotary tongue 44 and is fixed by means of a screw 50. By inserting and turning the key 2, the locking core 26 and thus the rotary tongue 44 can be rotated between an open position and a closed position. Fig. 1g illustrates the closed position in the installed state, in which the rotary tongue 44 engages behind a locking surface 94 of a frame 96 surrounding the sheet metal door 92 and thus locks the sheet metal door 92. When the locking core 26 is rotated by, for example, 90°, the locking core 26 or the rotary tongue 44 moves into an open position in which the rotary tongue 44 no longer engages behind the locking surface 94, so that the sheet metal door 92 can be opened.

[0072] The cam lock 20 further comprises locking means 52 which, when the

[0073] Key 2 blocks rotation of the locking core 26 in the lock housing 22 between the open position and the closed position. In the example in Fig. 1a-g, the locking means 52 comprise a plurality of locking elements 54 which are displaceably mounted in respective edge-side receptacles 56 of the locking core 26. The locking elements 54 can be displaced in the respective receptacles 56 between a locking position (see Fig. 1e) and a release position (see Fig. 1f). In the locking position (Fig. 1e), the locking elements 54 engage in respective recesses 58 of a shaped element 60 fastened to the lock housing 22 and thereby positively block rotation of the locking core 26 in the lock housing 22 between the open position and the closed position. In the release position (Fig.lf) the locking elements 54 are retracted into the receptacles 56 and do not engage in the recesses 58, so that the locking elements 54 in this release position release the rotation of the locking core 26 in the lock housing 22 between the open position and the closed position.

[0074] The locking means 52 are designed to release the rotation of the locking core 26 in the lock housing 22 between the open position and the closed position when the key 2 with the magnet arrangement 12 is inserted onto the first end 38 of the locking core 26. This is achieved in the case of the cam lock 20 in that the locking elements 54 are designed as magnets and the number, positions and pole orientations of the magnets 14 of the magnet arrangement 12 of the key 2 correspond to the number, positions and pole orientations of the locking elements 54 such that when the key 2 is inserted, a magnet 14 of the magnet arrangement 12 and a respective locking element 54 with the same magnetic poles lie opposite one another, so that a magnetic repulsion force acts on the locking elements 54, which moves the locking elements 54 out of the respective recess 58 into the release position.

[0075] In this way, the cam lock 20 can be unlocked with a matching key 2 with a predetermined magnet arrangement, while a key of the same type with respect to the key contour 8 but with a different magnet arrangement does not unlock the cam lock 20. The cam lock 20 and key 2 are thus magnetically coded via the number, positions, and polar orientations of the magnets 14 of the magnet arrangement 12 and the corresponding number, positions, and polar orientations of the locking elements 54.

[0076] In order to hold the locking elements 54 in the locked position when the key 2 is removed, a holding element 62 in the form of a ferromagnetic sheet, for example sheet steel, with a central opening 63 for the lock contour 40 is provided on the lock housing 22. The locking elements 54 are held in the recesses 58 by a magnetic attraction force between the locking elements 54 and the holding element 62. The strengths of the magnets 14 and the locking elements 54 designed as magnets are adapted such that the magnetic attraction force between the locking elements 54 and the holding element 62 is overcome by the magnetic repulsion force between the magnets 14 and the locking elements 54 when the key 2 is inserted, and the locking elements 54 move into the release position.

[0077] In order to increase the longevity of the cam lock 20, magnets, each surrounded by a steel sleeve, can also be used as locking elements 54 in one possible embodiment.

[0078] On the annular end face 64 of the lock housing 22, which in the present example is formed by one side of the holding element 62, a marking 66 is provided which corresponds to a marking 16 on the key 2 in order to indicate to the user the correct alignment of the key 2 to the cam lock 20 for the correct alignment of the magnet arrangement 12 to the locking elements 54.

[0079] The end face 64 of the cam lock 20 simultaneously forms a contact surface 67 of a contact surface arrangement 68 of the cam lock 20, which is provided for the contact of the magnet arrangement 12 in the orientation specified by the markings 16 and 66. The contact surface 67 is arranged separately from the lock contour 40, specifically, with respect to the rotation axis A, radially outside the lock contour 40. The locking elements 54 are accordingly also arranged separately from the lock contour 40, namely in the region of the contact surface 67.

[0080] In this way, the unlocking function, caused by the magnetic interaction between the magnet arrangement 12 and the locking elements 54 when the magnet arrangement 12 rests against the contact surface 67, is spatially and structurally separated from the torque transmission function, caused by the positive interaction of the key contour 8 and the lock contour 40. As a result, the lock contour 40 and the key contour 8 can be optimized for torque transmission, in particular, they can be made more robust, without the need to integrate movable or delicate components such as magnets and locking elements directly into the lock contour 40 and the key contour 8.

[0081] Figures 2a-g show a second embodiment of the lock, the key, and the locking system. Fig. 2a shows the key 102 and the lock 120 in a perspective view. Fig. 2b shows the key 102 and the lock 120 in a perspective view with a partial cutaway corresponding to the sectional plane designated "IIc" in Fig. 2e. Figures 2c and 2d show the key 102 and the lock 120 in a sectional view according to the sectional plane designated "IIc" in Fig. 2e, specifically before the key 102 is inserted (Fig. 2c) and after the key 102 is inserted (Fig. 2d). Fig. 2e shows a sectional view corresponding to the sectional plane designated "IIe" in Fig. 2c. Fig. 2f shows a sectional view corresponding to the sectional plane designated "IIf" in Fig. 2d. Fig. 2g shows a sectional view corresponding to Fig. 2f after rotating the locking core by 45°.

[0082] The key 102 and the lock 120 together form a locking system 180. In the present example, the lock 120 is designed as a cam lock, and the locking system 180 is designed as a cam lock system. Alternatively, the lock 120 could also be designed, for example, as a rod lock or axial lock, and the locking system 180 could be designed as a rod lock system or axial lock system.

[0083] The wrench 102 is also a socket wrench with a handle portion 104 and a socket portion 106, which in the present example are formed as a single piece. The socket portion 106 has a key contour 108, which in the present example is designed as a polygonal contour, namely as a cross-shaped projection. However, other key contours 108 are also conceivable. In the key 102, a magnet arrangement 112 with several magnets 114 is arranged on the key contour 108. The magnets 114 are inserted into four radial blind bores 109 of the key contour 108. The magnets 114 have predetermined pole orientations, some of which are indicated in the figures as "N" (magnetic north pole) and "S" (magnetic south pole).

[0084] The cam lock 120 has a lock housing 122 with an internal channel 124 in which a locking core 126 is rotatably mounted about the axis B. The lock housing 122 has a collar 130 on the front side 128 of the cam lock 120, from which a housing body 132 with an external thread 134 extends. The cam lock 120 can be assembled as described for the cam lock 20.

[0085] The locking core 126 is configured at its first end 138, accessible from the front side 128, for the torque-transmitting insertion of the key 102. For this purpose, the locking core 126 has a lock contour 140 at its first end 138 that corresponds to the key contour 108 and, in this case, is designed as a cross-shaped recess for receiving the cross-shaped projection of the key contour 108. At the second end 142 of the locking core 126, opposite the first end 138, the locking core 126 carries a rotating tongue 144 that is connected in a rotationally fixed manner to the locking core 126 via corresponding contours 146, 148 on the locking core 126 and the rotating tongue 144 and is fixed by means of a screw 150. The rotation of the locking core 126 and thus of the rotary tongue 144 between an open position and a closed position with the key 102 inserted takes place analogously to that previously described for the cam lock 20.

[0086] The cam lock 120 further comprises locking means 152 which, when the key 102 is removed, block rotation of the locking core 126 in the lock housing 122 between the open position and the closed position. In the example in Fig. 2a-g, the locking means 152 comprise a plurality of locking elements 154 which are mounted radially displaceably with respect to the rotation axis B in receptacles 156 formed by the lock housing 122 and the locking core 126. A receptacle 156 accordingly comprises a first part 156a formed by the lock housing 122 and a second part 156b formed by the locking core 126. The locking elements 154 in the cam lock 120 are each formed in two parts and each comprise a steel pin 154a and a magnet 154b, which are held together by the magnetic force between the steel pin 154a and the magnet 154b.

[0087] The locking elements 154 can be moved in the respective receptacles 156 between a locking position (see Fig. 2c and Fig. 2e) and a release position (see Fig. 2d and Fig. 2f). In the locking position (Fig. 2c and 2e), the locking elements 154 are arranged such that the respective steel pins 154a are arranged in both the first part 156a and the second part 156b of the respective receptacle 156 and thereby positively block rotation of the locking core 126 in the lock housing 122 between the open position and the closed position. In the release position (Fig.2d and 2f), the locking elements 154 are arranged such that the steel pins 154a are arranged only in the first part 156a and the magnets 154b are arranged only in the second part 156b of the receptacle 156, so that the locking elements 154 in this release position release the rotation of the locking core 126 in the lock housing 122 between the open position and the closed position and the locking core 126 can be rotated as shown in Fig. 2g with the steel pins 154a being separated from the magnets 154b.

[0088] The locking means 152 are designed to release the rotation of the locking core 126 in the lock housing 122 between the open position and the closed position when the key 102 with the magnet arrangement 112 is inserted onto the first end 138 of the locking core 126. This is achieved in the case of the cam lock 120 in that the number, positions and pole orientations of the magnets 114 of the magnet arrangement 112 of the key 102 correspond to the number, positions and pole orientations of the magnets 154b of the locking elements 154, so that when the key 102 is inserted, a magnet 114 of the magnet arrangement 112 and a respective magnet 154b of the locking element 154 with the same magnetic poles are opposite one another, so that a magnetic repulsion force acts on the magnets 154b, which moves the magnets 154b and thus also the respective steel pins 154a in the receptacle 156 into the release position.

[0089] In this way, the cam lock 120 can be unlocked with a matching key 102 with a predetermined magnet arrangement, while a key of the same type with respect to the key contour 108 but with a different magnet arrangement will not unlock the cam lock 120. The cam lock 120 and key 102 are thus magnetically coded via the number, positions, and polar orientations of the magnets 114 of the magnet arrangement 112 and the corresponding number, positions, and polar orientations of the magnets 154b of the locking elements 154.

[0090] To hold the locking elements 154 in the locked position when the key 102 is removed, retaining elements 162 in the form of ferromagnetic elements, for example, steel elements, are provided in the locking core 126. The magnets 154b, and thus the locking elements 154 as a whole, are held in the locked position by the magnetic attraction force between the magnets 154b of the locking elements 154 and the retaining elements 162. The strength of the magnets 114 and the magnets 154b of the locking elements 154 is adjusted such that the magnetic attraction force between the magnets 154b and the retaining elements 162 is overcome by the magnetic repulsion force between the magnets 114 and the magnets 154b when the key 102 is inserted, and the locking elements 154 move into the release position.

[0091] In the present example, the lock contour 140 and the key contour 108 are designed asymmetrically, so that the key contour 108 can only be inserted into the lock contour 140 in a predetermined orientation, in which the correct alignment of the magnet arrangement 112 to the magnets 154b of the locking elements 154 is ensured when the key 102 is inserted.

[0092] In the case of the cam lock 120, four side surfaces of the lock contour 140 form contact surfaces 167 of a contact surface arrangement 168 of the cam lock 20, which are provided for the engagement of the magnet arrangement 112 in the orientation predetermined by the asymmetrical shape of the lock contour 140 and the key contour 108. The contact surfaces 167 are arranged on the lock contour 140 in the case of the cam lock 120. The locking elements 154 are also arranged accordingly on the lock contour 140, namely in the region of the contact surfaces 167.

[0093] In this way, the security of the cam lock 120 against unauthorized operation is increased, since the contact surfaces 167 are not easily accessible from the outside and therefore manipulation of the cam lock 120 without a suitable key is made more difficult by stopped magnets.

[0094] Figures 3a-l show a third embodiment of the closure, the

[0095] Key and the locking system. Figs. 3a-b show the key 202 in a perspective view obliquely from above (Fig. 3a) and obliquely from below (Fig. 3b). Fig. 3c shows the lock 220 in a perspective view obliquely from above and obliquely from the front, respectively, with some parts shown as transparent with dashed lines for the sake of clarity. Fig. 3d shows a side view of the key 202 and the lock 220. Fig. 3e shows a top view of the lock 220. Figs. 3f and 3g show perspective views with partial cutaway corresponding to the sectional plane designated "Ulf" in Fig. 3e, namely before the key 202 is inserted (Fig. 3f) and after the key 202 is inserted (Fig. 3g). Fig. 3f further shows - in the dot-dash circle - an enlarged detail in sectional view according to the viewing direction marked "X" in the perspective view. Figs. 3h and 3i show sectional views corresponding to the direction shown in Fig.3e with the sectional plane designated "IIIh", specifically before the insertion of the key 202 (Fig. 3h) and after the insertion of the key 202 (Fig. 3i). Figs. 3j, 3k and 3l show sectional views corresponding to the sectional plane designated "IIIj" in Fig. 3d, specifically before the insertion of the key 202 (Fig. 3j), after the insertion of the key 202 (Fig. 3k) and after the rotation of the locking core 226 with the inserted key 202 by 45° (Fig. 3l).

[0096] The key 202 and the lock 220 together form a locking system 280.

[0097] In the present example, the closure 220 is designed as a cam lock, and the locking system 280 is designed as a cam lock system. Alternatively, the closure 220 could also be designed, for example, as a rod lock or axial lock, and the locking system 280 could be designed as a rod lock system or axial lock system.

[0098] The wrench 202 is a socket wrench with a handle portion 204 and a socket portion 206, which in the present example are formed as a single piece. The socket portion 206 has a key contour 208, which in the present example comprises four ring-segment-like projections 209. However, other key contours 208 are also conceivable. The socket portion 206 of the wrench has a magnet arrangement 212 with a plurality of magnets 214, 215, each with predetermined positions and predetermined pole orientations. Some of the magnets 214 of the magnet arrangement 212 are arranged in surfaces 210 of the socket portion 206 that are set back from the ring-segment-like projections 209 and lie between the ring-segment-like projections 209. Another magnet 215 of the magnet arrangement 212 is arranged in a central surface 211 that is set back from the surfaces 210.

[0099] The pole orientations of the individual magnets 214, 215 are partly marked in the figures with "N" (magnetic north pole) and "S" (magnetic south pole).

[0100] The cam lock 220 has a lock housing 222 (partially shown transparent in dashed lines in Fig. 3c for clarity) with an internal channel 224 in which a locking core 226 is rotatably mounted about the axis C. The lock housing 222 has a collar 230 on the front side 228 of the cam lock 220, from which a housing body 232 with an external thread 234 extends. The cam lock 220 can be assembled as described for the cam lock 20.

[0101] The locking core 226 is designed at the first end 238 accessible from the front side 228 for the torque-transmitting insertion of the key 202. For this purpose, the locking core 226 has at its first end 238 a lock contour 240 corresponding to the key contour 208, which in this case is designed in the form of four recesses 241 corresponding to the ring-segment-like projections 209.

[0102] At the second end 242 of the locking core 226, opposite the first end 238, the locking core 226 carries a rotary tongue 244, which is connected to the locking core 226 in a rotationally fixed manner via corresponding contours 246, 248 on the locking core 226 and the rotary tongue 244 and is fixed by means of a screw 250. The rotation of the locking core 226 and thus of the rotary tongue 244 between an open position and a closed position with the key 202 inserted takes place analogously to that previously described for the cam lock 20.

[0103] The cam lock 220 further comprises locking means 252, which, when the key 202 is removed, block rotation of the locking core 226 in the lock housing 222 between the open position and the closed position. In the example in Fig. 3a-l, the locking means 252 comprise axial locking elements 254 for axial locking and a radial locking element 255 for radial locking.

[0104] The axial locking elements 254 are formed in two parts and each comprise a steel pin 254a and a magnet 254b. The axial locking elements 254 are each axially displaceably mounted in receptacles 256 formed by the locking core 226 and the closure housing 222. A receptacle 256 accordingly comprises a first part 256a formed by the closure housing 222 and a second part 256b formed by the locking core 226.

[0105] The locking elements 254 can be moved in the respective receptacles 256 between a locking position (see Fig. 3h) and a release position (see Fig. 3i). In the locking position (Fig. 3h), the locking elements 254 are arranged such that the respective steel pins 254a are arranged in both the first part 256a and the second part 256b of the respective receptacle 256 and thereby positively block rotation of the locking core 226 in the lock housing 222 between the open position and the closed position. In the release position (Fig.3i) the locking elements 254 are arranged such that the steel pins 254a are arranged only in the first part 256a and the magnets 254b are arranged only in the second part 256b of the receptacle 256, so that the locking elements 254 in this release position release the rotation of the locking core 226 in the lock housing 222 between the open position and the closed position and the locking core 226 - when the radial locking element 255 is also in the release position - can be rotated with the steel pins 254a being separated from the magnets 254b.

[0106] The radial locking element 255 is also constructed in several parts and comprises a steel pin 255a and a magnet 255b, as well as two slides 255c-d arranged in a receptacle 257 of the locking core 226. The receptacle has a central, axial part 257a in which the steel pin 255a and the magnet 255b are mounted for axial displacement, and a radial part 257b in which the slides 255c-d are mounted for radial displacement. The slides 255c-d can be moved in the radial part 257b of the receptacle 257 between a respective locking position (see Fig. 3f) and a release position (see Fig. 3g) of the radial locking element 255. In the locking position (Fig. 3f), the slides 255c-d of the locking element 255 engage in respective radial recesses 259 in the lock housing 222 and thereby positively block rotation of the locking core 226 in the lock housing 222 between the open position and the closed position. In the release position (Fig.3g) the slides 255c-d of the locking element 255 are retracted into the receptacle 257 and do not engage in the recesses 259, so that the locking element 255 in this release position releases the rotation of the locking core 226 in the lock housing 222 between the open position and the closed position.

[0107] The locking means 252 are designed to release the rotation of the locking core 226 in the lock housing 222 between the open position and the closed position when the key 202 with the magnet arrangement 212 is inserted onto the first end 238 of the locking core 226.

[0108] With regard to the axial locking elements 254, this is achieved in the case of the cam lock 220 in that the number, positions and pole orientations of the magnets 214 of the magnet arrangement 212 of the key 202 correspond to the number, positions and pole orientations of the magnets 254b of the axial locking elements 254, so that when the key 202 is inserted, a magnet 214 of the magnet arrangement 212 and a respective magnet 254b of an axial locking element 254 with the same magnetic poles are opposite one another, so that a magnetic repulsion force acts on the magnets 254b and thus on the respective locking elements 254, which moves the locking elements 254 out into the release position.

[0109] With respect to the radial locking element 255, unlocking in the case of the cam lock 220 is achieved in that the position and polarity of the magnet 215 corresponds to the position and polarity of the magnet 255b in such a way that when the key 202 is inserted, the magnet 215 of the magnet arrangement 212 and the magnet 255b with the same magnetic poles are opposite one another, so that a magnetic repulsion force acts on the magnet 255b and thus on the steel pin 255a, which moves the steel pin 255a in the direction of the slides 255c-d. On the slides 255c-d and the steel pin 255a, corresponding inclined surfaces 264, 265 are provided which, when the steel pin 255a is moved in the direction of the slides 255c-d, interact in such a way that the slides 255c-d are retracted into the receptacle 257 and the locking element 255 is thus moved into the release position.

[0110] In this way, the cam lock 220 can be unlocked with a matching key 202 with a predetermined magnet arrangement, while a key of the same type with respect to the key contour 208 but with a different magnet arrangement does not unlock the cam lock 220. The cam lock 220 and key 202 are thus magnetically coded via the number, positions, and polar orientations of the magnets of the magnet arrangement and the corresponding number, positions, and polar orientations of the locking elements 254.

[0111] To hold the axial locking elements 254 in the locked position when the key 202 is removed, retaining elements 262 in the form of ferromagnetic elements are provided in the locking core 226. The locking elements 254 are held in the locked position by the magnetic attraction between the magnets 254b of the locking elements 254 and the retaining elements 262. The strengths of the magnets 214 and the magnets 254b of the locking elements 254 are adjusted such that, when the key 202 is inserted, the magnetic attraction between the magnets 254b and the retaining elements 262 is overcome by the magnetic repulsion between the magnets 214 and the magnets 254b, and the locking elements 254 move into the release position.

[0112] In order to hold the radial locking element 255 in the locked position when the key 202 is removed, a holding element 263 in the form of a ferromagnetic element is provided in the locking core 226 at the central receptacle 257a. Furthermore, mutually corresponding magnets 266 are provided on the slides 255c-d and are arranged such that two magnets 266 with the same poles face each other. The magnetic attraction force between the magnet 255b and the holding element 263 holds the magnet 255b and thus also the steel pin 255a in a position remote from the slides 255c-d. The magnetic repulsion force between the mutually corresponding magnets 266 of the slides 255c-d holds the slides 255c-d in the recesses 241, and thus the locking element 255 in the locked position.The strengths of the magnet 215, the magnet 255b and the magnets 266 are adapted so that the magnetic attraction force between the magnet 255b and the holding element 263 when the key 202 is inserted is overcome by the magnetic repulsion force between the magnet 215 and the magnet 255b and when the magnet 255b and the steel pin 255a are moved in the direction of the slides 255c-d, the slides 255c-d are retracted into the receptacle 257 by the interaction of the inclined surfaces 264, 265 against the magnetic repulsion force of the magnets 266 and thus the radial locking element 255 is moved into the release position.

[0113] In the case of the cam lock 220, the surfaces 267 between the recesses

[0114] 241 and the centrally projecting surface 268 are respective contact surfaces of a contact surface arrangement 269 of the cam lock 220, which is provided for the contact of the magnet arrangement 212.

[0115] The combination of radially and axially movable locking elements ensures that the 220 cam lock achieves a particularly high level of vibration resistance.

[0116] Figures 4a-e show a fourth embodiment of the lock, the key, and the locking system. Fig. 4a shows the key 302 and the lock 320 in a perspective view obliquely from below and obliquely from behind, respectively. Fig. 4b shows the key 302 in a view from below. Fig. 4c shows the lock 320 in a plan view of the lock contour. Figs. 4d-e show the key 302 and the lock 320 in a three-quarter sectional view corresponding to the section planes designated "IVd / e" in Figs. 4b-c, namely before the key 302 is inserted (Fig. 4d) and after the key 302 is inserted (Fig. 4e).

[0117] The key 302 and the lock 320 together form a locking system 380.

[0118] The closure 320 has a fundamentally similar structure to the closure 20 in Fig. 1a-g. In this respect, reference is made to the above explanations regarding Fig. 1a-g. Corresponding components are partially provided with the same reference numerals, even if they may be configured differently in Fig. 1a-g and Fig. 4a-e.

[0119] The closure 320 differs from the closure 20 in that the locking core 326 has, at the first end accessible from the front side 28 of the closure 320, a contoured part 339, preferably laterally projecting beyond the collar 30 of the closure housing 22, with a lock contour 340, which in this case is designed as an outer contour. When installed in an opening in a thin wall, the collar 30 of the closure housing 22 forms a contact surface on one side of the thin wall. From the other side of the thin wall, a nut can be screwed onto the external thread 34 to secure the closure in the opening.

[0120] The key 302 has a plug-in part 306 with a key contour 308 in the form of an inner contour adapted to the lock contour 340. Several magnets 314 with a predetermined position and polarity are arranged in a recessed area 310 surrounded by the key contour 308, forming a magnet arrangement 312. The handle part 304 of the key 302 is formed by a handling contour arranged on the back of the plug-in part 306.

[0121] In the present closure 320, the locking core 326 is formed in several parts with the contour part 339 and a core part 327 arranged in the inner channel 24 of the closure housing 22, wherein the contour part 339 and core part 327 are connected to one another in a rotationally fixed manner. For this purpose, the contour part 339 in the present embodiment has an outer contour 370 and the core part 327 has a corresponding inner contour 371, for example a polygonal contour, which engage with one another in a form-fitting manner. In the present embodiment, the contour part 339 is also connected to the core part 327 by the screw 50 guided through the core part 327 being screwed into an internal thread 372 on the contour part 339. The multi-part design of the locking core 326 with a separate contour part 339 enables the selection of a contour part from a multitude of different contour parts, if necessary.

[0122] Alternatively, contour part 339 and core part 327 can also be formed as one piece.

[0123] As shown in Fig. 4d, a circumferential seal 323, for example an O-ring, can be provided on the collar 30 of the closure housing 22, preferably adjacent to the core part 327, which seals the closure housing 22 towards the wall and can also prevent the penetration of moisture between the closure housing 22 and the core part 327.

[0124] The locking means 352 of the cam lock 320 comprise a plurality of locking elements 354, which are slidably mounted in respective edge-side receptacles 356 of the lock housing 22. The locking elements 354 can be moved in the respective receptacles 356 between a locking position (see Fig. 4d) and a release position (see Fig. 4e). In the locking position (Fig. 4d), the locking elements 354 engage in respective recesses 358 of the locking core 326 and thereby positively block rotation of the locking core 326 in the lock housing 22 between the open position and the closed position. In the release position (Fig. 4e), the locking elements 354 are retracted into the receptacle 356 and do not engage in the recesses 358, so that the locking elements 354 release the rotation of the locking core 326 in the lock housing between the open position and the closed position.

[0125] The locking elements 354 are designed as magnets whose position and polarity are adapted to the magnet arrangement 312 of the key 302 such that the locking elements 354 are moved into the release position when the key 302 is inserted (Fig. 4d). For this purpose, the locking elements 354 designed as magnets and the magnets 314 of the magnet arrangement 312 are arranged and aligned in particular such that, when the key 302 is inserted, each locking element 354 is opposed by a respective magnet 314 of the magnet arrangement 314 with antiparallel polarity, so that a force acts on the locking element 354 that moves the locking element 354 into the release position. Furthermore, holding elements 362 in the form of ferromagnetic elements are provided in the locking core 326, in the present example in the contour part 339 of the locking core 326, which hold the locking elements 354 in the locking position without the key 302 being attached (Fig. 4c).The magnets 314 and locking elements 354 are adapted such that the holding force between holding element 362 and respective locking element 354 is overcome by the repulsive force between magnet 314 and respective locking element 354 when the key 302 is placed on.

[0126] The lock contour 340 and the key contour 308 are designed asymmetrically in the present example, so that the key contour 308 can only be placed on the lock contour 308 in a predetermined orientation. With the ten locking elements 354 designed as magnets in the present example and correspondingly ten magnets 314 of the magnet arrangement 312, 2 10 = 1024 different combinations for the pole directions of the magnets.

[0127] The pole orientations of the individual magnets 314 or the blocking elements 354 are partially marked in the figures with "N" (magnetic north pole) and "S" (magnetic south pole).

[0128] In the present example, the receptacles 356 and associated recesses 358 for the plurality of locking elements 354 are also spaced at different distances from the rotational axis D of the locking core 326 (see Fig. 4c). This prevents a locking element 354 from moving into another receptacle 356 and thus into a locking position during or after pivoting the locking core 326, in particular from the closed position, which could, for example, block the rotation of the locking core 326 back into the closed position. As a result, the locking core 326 can, for example, be freely moved into the closed position, since the locking elements 354 can only return to the locked position in their respective receptacles 356 upon reaching the closed position, once the key 302 has been removed.

[0129] Due to the different distances between the receptacles 356 and the rotational axis D of the locking core 326, the number of possible combinations for the magnet arrangement 312 can also be increased, for example, since in addition to the pole direction of the individual magnets 314, different radial positions for the individual magnets 314 with respect to the rotational axis D of the locking core 326 can also be selected. For this purpose, the magnetic force of the locking elements 354 and the magnets 314 is preferably dimensioned such that a locking element 354 is only moved into the respective release position when the associated magnet 314 is positioned at a predetermined distance from the rotational axis D.

[0130] Figures 5a-e show a fifth embodiment of the lock, the key, and the locking system. Fig. 5a shows the key 402 and the lock 420 in a perspective view. Fig. 5b shows the key 402 in a front plan view of the key contour. Fig. 5c shows the lock 420 in a plan view of the lock contour. Figs. 5d-e show the key 402 and the lock 420 in a three-quarter sectional view corresponding to the section planes labeled "Vd / e" in Figs. 5b-c, namely before the key 402 is inserted (Fig. 5d) and after the key 402 is inserted (Fig. 5e).

[0131] The key 402 and the lock 420 together form a locking system 480.

[0132] The closure 420 basically has a similar internal structure to the closure 20 in Fig. 1a-g. In this respect, reference is made to the above explanations regarding Fig. 1a-g. Corresponding components are partially provided with the same reference numerals, even if they may be configured differently in Fig. 1a-g and Fig. 4a-e.

[0133] The lock 420 differs from the lock 20 in that the lock 420 is not designed as a cam lock, but rather in the form of a profile cylinder with a locking lug 444 that is non-rotatably connected to the locking core 426 and, as shown in Fig. 4a, can optionally be held in a predetermined position with a spring 445 when the lock 420 is not actuated. The lock housing 422 here has the shape of a profile cylinder, so that the lock 420 can be used instead of a conventional cylinder lock.

[0134] The locking core 426 has a lock contour 440 at the first end accessible from the front side 28 of the lock 420, which in this case is designed as an inner contour, for example, as a square recess. The key 402 correspondingly has a plug-on part 406 with a key contour 408 adapted to the lock contour 440 in the form of a protruding outer contour. Alternatively, the lock contour 440 could also be designed as an outer contour, for example, as a square elevation, and the key contour 408 could be designed as an inner contour, for example, a square inner contour.

[0135] The locking means 452 of the cam lock 420 comprise a plurality of locking elements 454 designed as magnets, which are displaceably mounted in respective edge-side receptacles 456 of the lock housing 422. The locking elements 454 can be displaced in the respective receptacles 456 between a locking position (see Fig. 5d), in which the locking elements 454 engage in respective recesses 458 of the locking core, and a release position (Fig. 5e), into which the locking elements 454 are moved when the key 402 with the adapted magnet arrangement 412 is inserted, thus enabling the rotation of the locking core 426 in the lock housing 422.

[0136] In the present exemplary embodiment, the locking core 426 is formed in two parts, with a core part 427 arranged in the inner channel 424 of the locking housing 422 and a contour part 439 with the lock contour 440. The core part 427 and the contour part 439 are connected to one another in a rotationally fixed manner in that an outer contour 470 of the core part engages positively with an inner contour 471 of the contour part 439 and the screw 50 is screwed through the core part 427 into an internal thread 472 in the contour part 439. The lock contour 440 and the key contour 408 are formed asymmetrically, so that the key 402 can only be placed on the lock contour 440 in a predetermined orientation. With the locking means 452, which in the present example comprise nine locking elements 454 designed as magnets, and correspondingly nine magnets 414 of the magnet arrangement 412, 2 9 = 512 different combinations for the pole directions of the magnets.

[0137] The pole orientations of the individual magnets 414 or the blocking elements 454 are partly marked in the figures with "N" (magnetic north pole) and "S" (magnetic south pole).

[0138] As with the closure 320, the receptacles 456 and associated recesses 458 for the locking elements 454 are spaced at different distances from the axis of rotation of the locking core 426 in the closure 420 (see Fig. 5c) in order to prevent that when the locking core 426 is pivoted, a locking element 454 can move into another receptacle 456 and thus into the locking position, which could block the rotation of the locking core 426, for example, back to the starting position.

[0139] The holding element 462 in the closure 420 is formed as an annular sheet of ferromagnetic metal, which is inserted into the core part 439.

[0140] 2, 102,202,302, 402 keys

[0141] 4, 104, 204, 304, 404 handle part

[0142] 6, 106,206,306, 406 attachment

[0143] 8, 108,208,308, 408 key contour

[0144] 10 Collar of the attachment part

[0145] 12, 112,212, 312,412 magnet arrangement

[0146] 14, 114,214,215, 314,414 Magnet

[0147] 16 Marking

[0148] 20,120,220,320, 420 closure

[0149] 22,122,222, 422 bolt housing

[0150] 24, 124, 224, 424 inner channel

[0151] 26,126,226,326, 426 locking core

[0152] 28, 128, 228 front

[0153] 30, 130,230 Collar of the bolt housing

[0154] 32, 132,232 housing body

[0155] 34, 134, 234 external thread

[0156] 36 mother

[0157] 38, 138,238 first end of the locking core

[0158] 40, 140, 240, 340, 440 lock contour

[0159] 42, 142, 242 second end of the locking core

[0160] 44, 144, 244 rotary tongue

[0161] 46, 48, 146, 148, 246, 248 corresponding contours

[0162] 50, 150,250 screw

[0163] 52,152,252,352, 452 blocking agents

[0164] 54, 154,254,255, 354, 454 locking element

[0165] 56, 156,256,257, 356, 456 recording

[0166] 58,259 deepening

[0167] 60 form element

[0168] 62, 162,262,263, 362, 462 retaining element

[0169] 63 Opening 64 Front side

[0170] 66 Marking

[0171] 67, 167, 267, 268 contact surface

[0172] 68, 168, 269 Contact surface arrangement

[0173] 80, 180, 280, 380, 480 locking system

[0174] 90 opening

[0175] 92 sheet metal door

[0176] 94 Restricted area

[0177] 96 frames

[0178] 109 Blind hole

[0179] 154a, 254a, 255a steel pin

[0180] 154b, 254b, 255b Magnet

[0181] 156a first part of recording 156

[0182] 156b second part of recording 156

[0183] 164 side area

[0184] 209 supernatant

[0185] 210 area

[0186] 211 area

[0187] 241 Deepening

[0188] 255c-d sled

[0189] 256a first part of recording 256

[0190] 256b second part of recording 256

[0191] 257a axial part of the holder 257

[0192] 257b radial part of the receptacle 257

[0193] 264, 265 inclined surface

[0194] 266 Magnet

[0195] 310 area

[0196] 323 Seal

[0197] 327, 427 core part

[0198] 339, 439 contour part

[0199] 358, 458 Recess 370, 470 Outer contour of the contour part

[0200] 371, 471 inner contour of the core part

[0201] 372, 472 Internal thread of the contour part

[0202] 444 locking lug

[0203] 445 spring

[0204] A, B, C, D axis of rotation

Claims

Patent claims Closure (20, 120, 220, 320, 420), in particular a cam lock, with a lock housing (22, 122, 222, 422) and with a locking core (26, 126, 226, 326, 426) rotatably mounted in the lock housing (22, 122, 222, 422), wherein the locking core (26, 126, 226, 326, 426) is provided at a first end (38, 138, 238) accessible from a front side (28, 128, 228) of the closure (20, 120, 220, 320, 420) for the torque-transmitting insertion of a key (2, 102, 202, 302, 402), in particular a plug-on key, and wherein the closure (20, 120, 220, 320, 420) has locking means (52, 152, 252, 352, 452) which, when the key (2, 102, 202, 302, 402) is removed, block a rotation of the locking core (26, 126, 226, 326, 426) in the closure housing (22, 122, 222, 422) between an open position and a closed position, characterized in that the locking means (52, 152, 252, 352, 452) are designed toto release the rotation of the locking core (26, 126, 226, 326, 426) in the lock housing (22, 122, 222, 422) between the open position and the closed position when a key (2, 102, 202, 302, 402), in particular a plug-on key, with a predetermined magnet arrangement (12, 112, 212, 312, 412) is plugged onto the first end (38, 138, 238) of the locking core (26, 126, 226, 326, 426). Closure according to claim 1, characterized in that the locking core (26, 126, 226, 326, 426) has at the first end (38, 138, 238) a lock contour (40, 140, 240, 340, 440), in particular a polygonal contour, for torque-transmitting plugging, a key (2, 102, 202, 302, 402), in particular a polygon key.

3. Closure according to one of claims 1 to 2, characterized in that the predetermined magnet arrangement (12, 112, 212, 312, 412) comprises a predetermined number of magnets (14, 114, 214, 215, 314, 414) each with a predetermined position.

4. Closure according to one of claims 1 to 3, characterized in that the predetermined magnet arrangement (12, 112, 212, 312, 412) comprises a predetermined number of magnets (14, 114, 214, 215, 314, 414) each with a predetermined position and a predetermined pole orientation.

5. Closure according to one of claims 1 to 4, characterized in that the locking means (52, 152, 252, 352) comprise a locking element (54, 154, 254, 255, 354, 454) which can be moved between a locking position in which the locking element (54, 154, 254, 255, 354, 454) blocks the rotation of the locking core (26, 126, 226, 326, 426) in the closure housing (22, 122, 222, 422) between the open position and the closed position, and a release position in which the locking element (54, 154, 254, 255, 354, 454) blocks the rotation of the locking core (26, 126, 226, 326, 426) in the lock housing (22, 122, 222, 422) between the open position and the closed position, is displaceably mounted.

6. Closure according to claim 5, characterized in that the locking core (26, 126, 226, 326, 426) and / or the closure housing (22, 122, 222, 422) has a receptacle (56, 156, 256, 257, 356, 467) in which the locking element (54, 154, 254, 255, 354, 454) is displaceably mounted. Closure according to claim 5 or 6, characterized in that the locking means comprise a plurality of locking elements which are mounted in respective receptacles arranged around the axis of rotation of the locking core in the closure housing and / or in the locking core and which, in the locking position, engage in a respectively associated recess in the locking core and / or closure housing, wherein preferably at least two, in particular all, of the receptacles and / or associated recesses arranged around the axis of rotation of the locking core have different distances from the axis of rotation of the locking core.Closure according to one of claims 5 to 7, characterized in that the closure (20, 120, 220, 320, 420) has a holding element (62, 162, 262, 263, 362, 462) which is designed to hold the locking element (54, 154, 254, 255, 354, 454) in the closed position when the key (2, 102, 202, 302, 402) is removed by magnetic interaction, in particular between the holding element (62, 162, 262, 263, 362, 462) and the locking element (54, 154, 254, 255, 354, 454).Closure according to one of claims 5 to 8, characterized in that the blocking element (54, 154, 254, 255, 354, 454) is designed to be moved into the release position when a key (2, 102, 202, 302, 402) with the predetermined magnet arrangement (12, 112, 212, 312, 412) is placed onto the first end (38, 138, 238) of the locking core (26, 126, 226, 326, 426), namely by magnetic interaction, in particular magnetic repulsion, between the blocking element (54, 154, 254, 255, 354, 454) and the magnet arrangement (12, 112, 212, 312, 412). Closure according to one of claims 5 to 8, characterized in that the blocking element (54, 154, 254, 255, 354, 454) is a magnet or comprises a magnet. Closure according to one of claims 1 to 10, characterized in that the closure (20, 120, 220, 320, 420) has a contact surface arrangement (68, 168, 269) for contacting the predetermined magnet arrangement (12, 112, 212, 312, 412) and the locking means (52, 152, 252, 352, 452) are arranged and designed such that the locking means (52, 152, 252, 352, 452) release the rotation of the locking core (26, 126, 226, 326, 426) in the closure housing (22, 122, 222, 422) between the open position and the closed position when the predetermined magnet arrangement (12, 112, 212, 312, 412) comes into contact with the contact surface arrangement (68, 168, 269).Closure according to claim 11, characterized in that the contact surface arrangement (68, 168, 269) is arranged completely or at least partially separately from the lock contour (40, 140, 240, 340, 440), for example, is arranged radially outwardly or inwardly offset with respect to the rotational axis (A, B, C, D) of the locking core (26, 126, 226, 326, 426). Closure according to claim 11 or 12, characterized in that the contact surface arrangement (68, 168, 269) is arranged at least partially on the lock contour (40, 140, 240, 340, 440), preferably on an inner surface of a receptacle of the lock contour (40, 140, 240, 340, 440).Closure according to one of claims 1 to 13, characterized in that the locking core (26, 126, 226, 326, 426) is designed in several parts and has a core part (327, 427) arranged in the inner channel (24, 124, 224, 424) of the closure housing (22, 122, 222, 422) and a contour part (339, 439) with the lock contour (440), wherein the core part (327, 427) and the contour part (339, 439) are connected to one another in a rotationally fixed manner.

15. Closure according to one of claims 1 to 14, characterized in that the closure housing (22, 122, 222, 422) has the shape of a profile cylinder.

16. Key (2, 102, 202, 302, 402), preferably a plug-on key, in particular for a closure (20, 120, 220, 320, 420) according to one of claims 1 to 15, with a handle part (4, 104, 204, 304) and with a plug-on part (6, 106, 206, 306, 406), wherein the plug-on part (6, 106, 206, 306, 406) has a key contour (8, 108, 208, 308, 408), in particular a polygonal contour, for torque-transmitting plugging onto a locking core (26, 126, 226, 346, 426) of a closure (20, 120, 220, 320, 420), characterized in that the key (2, 102, 202, 302, 402) has a magnet arrangement (12, 112, 212, 312, 412) on the plug-on part (6, 106, 206, 306, 406).

17. Key according to claim 16, characterized in that the magnet arrangement (12, 112, 212, 312, 412) comprises one or more magnets (14, 114, 214, 215, 314, 414) arranged at a respective position, wherein preferably at least two magnets (14, 114, 214, 215, 314, 414) have different pole orientations.

18. Key according to claim 16 or 17, characterized in that the magnet arrangement (12, 112, 212, 312, 412) is arranged at least partially separately from the key contour (8, 108, 208, 308, 408) and / or at least partially on the key contour (8, 108, 208, 308, 408).

19. Key according to one of claims 16 to 18, characterized in that the key (2, 102, 202, 302, 402) has a wall thickness of at least 4 mm. Closure system (80, 180, 280, 380, 480), in particular Cam lock system, with a lock (20, 120, 220, 320, 420) according to one of claims 1 to 15 and with a key (2, 102, 202, 302, 402) matching the lock (20, 120, 220, 320, 420), in particular according to one of claims 16 to 19.

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