Magnetically encoded lock

Abstract

The present invention relates to a lock (20, 120, 220, 320, 420), in particular a window lock, comprising a lock housing (22, 122, 222, 422) and a lock core (26, 126, 226, 326, 426) rotatably assembled within the lock housing (22, 122, 222, 422). The lock core (26, 126, 226, 326, 426) is formed at a first end (38, 138, 238) accessible from the front side (28, 128, 228) of the lock (20, 120, 220, 320, 420) for attaching a key (2, 102, 202, 302, 402), in particular a socket key, to transmit torque. The lock (20, 120, 220, 320, 420) has preventing means (52, 152, 252, 352, 452) for preventing rotation of the lock core (26, 126, 226, 326, 426) within the lock housing (22, 122, 222, 422) between an open position and a closed position when the key (2, 102, 202, 302, 402) is removed. The preventing means (52, 152, 252, 352, 452) is configured such that a key (2, 102, 202, 302, 402), in particular a socket key, having a predetermined magnet arrangement (12, 112, 212, 312, 412), allows rotation of the lock core (26, 126, 226, 326, 426) within the lock housing (22, 122, 222, 422) between an open position and a closed position when assembled to the first end (38, 138, 238) of the lock core (26, 126, 226, 326, 426). The present invention further relates to a key (2, 102, 202, 302, 402) and a lock system (80, 180, 280, 380, 480).

Description

Technical Field

[0001] The present invention relates to a lock, particularly a window lock, comprising a lock housing and a lock core rotatably assembled within the lock housing, the lock core being formed at a first end accessible from the front side of the lock for attaching a key, particularly a socket key, so as to transmit torque, and the lock having prevention means for preventing rotation of the lock core within the lock housing between an open position and a closed position when the key is removed. The present invention also relates to a key for such a lock, particularly a socket key, and a lock system comprising such a lock and such a key, particularly a window lock system.

[0002] Locks, such as window locks and the like, are used in the prior art as industrial hardware components, for example, for locking thin sheet metal doors. A simple window lock has a lock-side contour, for example, in the form of a square end or a square recess, on the lock core for attaching a key having a corresponding key-side contour, for example, a socket key having a square hollow contour or a square contour, whereby high torque can be transmitted from the socket key to the lock core and thus to the rotating tongue. Thus, when opening and closing the window lock, it is possible to eliminate the very high frictional force, often present, between the rotating tongue and the prevention surface of the frame surrounding the sheet metal door with which the rotating tongue engages on the back side. A disadvantage of such window locks is the low level of security against unauthorized operation. This is because such window locks can be opened and closed very easily, even without the appropriate key, for example, by means of pliers.

[0003] Furthermore, from the prior art, window locks are known in which a conventional cylinder lock is incorporated within the window lock or within its lock core. Such a conventional cylinder lock has a lock core with a key passage, and a movable preventing element, for example, a preventing plate (for a plate cylinder), a preventing disk (for a disk cylinder) or a preventing pin (for a pin cylinder), is mechanically moved to a specific position by a key-side contour of a suitable key inserted into the key passage, and when this is not possible, the preventing element prevents rotation of the lock core within the lock housing. This provides a high level of security against unauthorized operation. However, conventional cylinder locks are more vulnerable to damage than socket-key locks, and thus either are not very robust under adverse environmental conditions or require a key cover to prevent dust and dirt from contaminating the delicate key passage or the movable preventing element, which complicates the handling of the lock. Furthermore, due to the low leverage action of a standard cylinder key and the delicate mechanism of a conventional cylinder lock, a standard cylinder key can transmit only a very low torque, which, as described above, limits the use of conventional cylinder locks in window locks that, in part, require a high torque for opening and closing.

[0004] Despite the use of conventional cylinder locks, it is also known to additionally provide a separate rotary handle for opening and closing the window lock, in addition to the unlocking cylinder lock, in order to transmit a high torque. However, such window locks have the disadvantage of increased operational complexity and require a significantly large installation space.

[0005] Against this background, the present invention is based on the object of proposing a lock, in particular a window lock, a key for such a lock and a lock system that eliminate at least one or some of the disadvantages of the prior art described above.

[0006] According to the present invention, the above object is achieved by a lock, particularly a window lock, comprising a lock housing and a lock core rotatably assembled within the lock housing. The lock core is formed at a first end accessible from the front side of the lock for attaching a key, particularly a socket key, to transmit torque. The lock has a prevention means for preventing rotation of the lock core within the lock housing between an open position and a closed position when the key is removed. The prevention means is configured such that when a key, particularly a socket key, having a predetermined magnet arrangement is assembled to the first end of the lock core, it allows (German: freizugeben, English: release) rotation of the lock core within the lock housing between the open position and the closed position. This is solved by the lock.

[0007] In this way, a robust and compact lock, particularly a window lock, is provided, which has a lock core that can transmit preferably high or higher torque by assembling and rotating the key, and at the same time provides a certain basic safety against opening and closing without the appropriate key.

[0008] In particular, the lock may be a window lock. In this case, the lock core preferably has a rotating tongue at a second end. In particular, this rotating tongue may be removably connected to the lock core. In this case, the lock may be used, for example, to transmit high or higher torque to the rotating tongue, such as to lock the rotating tongue against the back side of the corresponding surface or to move it from the locking position on the back side of the corresponding surface.

[0009] It is also possible that the lock is a rod lock, for example a rod lock for a door. In this case, the second end of the lock core is preferably connected to one or more rods, such that the rotational movement of the lock core is converted into a pushing movement of the one or more rods. For example, the second end of the lock core may support a gear that meshes with a corresponding section of the rod of the rod lock, such as a rack section.

[0010] It is also possible for the lock to be an axial lock. In this case, a contour portion that can be moved, for example, in the axial direction may be provided at the second end of the lock core. This contour portion may be moved, for example, into a corresponding contour portion provided in a frame for locking, and / or may be moved out of the contour portion for unlocking. Also, the second end of the lock core may have a contour portion, for example, a screw or bayonet contour portion, and this contour portion may be rotated, for example, into a corresponding contour portion provided in a frame for locking, and / or may be rotated out of the contour portion for unlocking. Combinations of these designs are also possible.

[0011] It is also possible for the lock to be formed in the shape of a profile cylinder. For this purpose, the lock housing may in particular have the shape of a profile cylinder. This makes it possible to use the lock instead of a conventional cylinder lock, for example, a plate cylinder, a disk cylinder or a pin cylinder. In particular, in this way, the lock can be easily installed in a locking device for a profile cylinder. Such a lock in the form of a profile cylinder preferably has a locking lug non-rotatably connected to the lock core.

[0012] When a key having a predetermined magnet arrangement is attached to the first end of the lock core, a magnetic unlocking function is provided by the fact that the preventing means is configured to allow rotation of the lock core within the lock housing between the open position and the closed position. Thereby, the key-side contour portion and the corresponding lock-side contour portion of the lock core can be geometrically and mechanically optimized, preferably, for example, with a more robust design to transmit high torque.

[0013] In contrast, in a conventional cylinder lock system, in order to achieve a mechanical unlocking function, the shape of the key of the cylinder lock and the key passage of the cylinder lock that houses this key are mechanically complex, which means that only extremely low torque can be transmitted.

[0014] The lock core is formed at a first end accessible from the front side of the lock for the purpose of attaching a key to transmit torque. Thus, when the prevention means allows rotation of the lock core, the lock core can be actuated by attaching an appropriate key.

[0015] Preferably, the first end of the lock core is configured such that an appropriate key can be attached to the first end of the lock core in a form-fitting manner, whereby torque can be transmitted from the key to the lock core with respect to the axis of rotation of the lock core. Thus, the lock core can be actuated by the key. Attaching the key may include inserting a protruding portion of the key-side contour of the key, for example a polygonal contour, into a corresponding recess provided at the first end of the lock core.

[0016] The prevention means is designed to prevent rotation of the lock core within the lock housing between the open position and the closed position when the key is removed. The prevention means may be designed, for example, to prevent rotation of the lock core within the lock housing from the open position to the closed position when the key is removed. Additionally or alternatively, the prevention means may be designed, for example, to prevent rotation of the lock core within the lock housing from the closed position to the open position when the key is removed. It is possible, but not necessarily required, for the prevention means to prevent any rotation of the lock core within the lock housing when the key is removed. In particular, for example, even when the key is removed, the lock core may be moved from an intermediate position between the open position and the closed position to the open position or the closed position, and the prevention means may be designed to engage only when the open position and / or the closed position is reached.

[0017] The prevention means is designed to allow rotation of the lock core within the lock housing between the open position and the closed position when a key having a predetermined magnet arrangement is attached to the first end of the lock core. Thus, the prevention means is configured in particular to interact magnetically with the predetermined magnet arrangement, and this magnetic interaction allows rotation of the lock core.

[0018] By adapting the anti - tampering means to a predetermined magnetic arrangement part of the key, the lock is magnetically encoded. Thus, for the operation of the lock, the use of an appropriate key having a specific magnetic arrangement part is required, while the operation of the lock by a key having no magnetic arrangement part or a magnetic arrangement part different from the predetermined magnetic arrangement part is possible only to a limited extent, for example, only at an intermediate position between the open position and the closed position or not possible at all. Thus, the predetermined magnet arrangement part determines the design of the lock. The magnet arrangement part itself is not part of the lock. However, since the anti - tampering means of the lock is specifically adapted to the predetermined magnet arrangement part, the anti - tampering means allows the rotation of the lock core by the attachment of an appropriate key having this predetermined magnet arrangement part.

[0019] The above - mentioned object is further solved, according to the present invention, by a key, preferably a socket key, especially for the lock or its embodiment described above. This key has a grip part and an attachment part, and the grip part and the attachment part may be integrally formed. The attachment part has a key - side contour part, especially a polygonal contour part, for attaching to the lock, especially the lock core of the lock or its embodiment described above, so as to transmit torque. Further, the key has a magnet arrangement part provided on the attachment part for magnetically interacting with the anti - tampering means of the lock, especially the lock or its embodiment described above.

[0020] The key is especially a socket key, for example a polygonal key. In particular, the key may have an outer contour part and / or an inner contour part, for example, a polygonal contour part, and with this contour part, the key can be attached to the corresponding matching contour part of the lock, especially the inner contour part and / or the outer contour part. An example of a socket key having an outer contour part is a key having a square bar. An example of a socket key having an inner contour part is a key having a square hole. It is also possible for the key to have both an outer contour part and an inner contour part.

[0021] Furthermore, according to the present invention, the above-described object is solved by a lock system, particularly a window lock system, comprising the above-described lock or an embodiment thereof and a key that matches the lock, particularly the above-described key or an embodiment thereof.

[0022] The key of the lock system is a key that matches the lock of the lock system. For this purpose, the key and the lock are particularly adapted to each other in that the lock core is formed at a first end for the purpose of attaching the key so as to transmit torque, and when the key is attached to the first end of the lock core, the locking means of the window lock is configured to allow rotation of the lock core within the lock housing between an open position and a closed position. In particular, the magnetic arrangement of the key is a predetermined magnetic arrangement, and with respect to this magnetic arrangement, the locking means is configured to allow rotation of the lock core within the lock housing between an open position and a closed position when the key having this predetermined magnetic arrangement is attached to the first end of the lock core.

[0023] Various embodiments of the lock, key, and lock system will be described below, but the individual embodiments are applied to the lock, key, and lock system independently of each other. Furthermore, the individual embodiments may be combined with each other as necessary.

[0024] In one embodiment, the lock core has a lock-side contour, particularly a polygonal contour, at a first end for attaching a key, preferably a socket key, particularly a polygonal key, so as to transmit torque. Such a lock-side contour allows for the transmission of high or higher torque when a socket key having a corresponding key-side contour is attached. Furthermore, such a lock-side contour for a socket key is extremely robust under particularly adverse environmental conditions, such as a dusty environment, compared to the key passage of a conventional cylinder lock system. In particular, the lock-side contour may have one or more recesses and / or one or more protrusions.

[0025] The tablet-side contour portion of the tablet core is intended to attach a socket key so as to transmit torque. Therefore, the tablet-side contour portion is designed to form a shape fit with the key-side contour portion for torque transmission, particularly when the assigned key is attached.

[0026] The tablet-side contour portion may have, for example, a recess for accommodating a corresponding convex portion, such as a polygonal convex portion, of the key-side contour portion of the assigned key, for example, a polygonal recess. Further, the tablet-side contour portion may have, for example, a convex portion, such as a polygonal convex portion, for accommodating in a corresponding recess, such as a polygonal recess, of the key-side contour portion of the assigned key.

[0027] The tablet core may have a contour portion having a tablet-side contour portion, particularly an outer contour portion, and this contour portion may, for example, protrude laterally beyond the tablet housing at a first end. Therefore, the key may have a key-side contour portion adapted to the tablet-side contour portion, particularly an inner contour portion.

[0028] Preferably, the contour portion is flat and is defined at the edge by the outer contour portion forming the tablet-side contour portion. This enables a very flat design of the tablet-side contour portion. Thus, for example, it is possible to prevent a user from getting caught on the protruding portion of the tablet-side contour portion. Also, thus, there are fewer points of action for tampering.

[0029] Therefore, the key may preferably have, for example, an inner contour portion defining a flat region where a magnet arrangement or one or more of its magnets may be arranged. Thus, a robust key having a flat design can be provided.

[0030] The tablet-side contour portion, such as the outer contour portion, and / or the key-side contour portion, such as the inner contour portion, may be rounded, for example, preferably in an elliptical shape. This improves the anti-tampering property of the tablet because the rounded shape of the tablet-side contour portion provides few points of action for foreign tools, such as pliers.

[0031] The ingot side contour portion and / or the key side contour portion are preferably asymmetric, so that the ingot side contour portion enables a key having a corresponding key side contour portion to be attached in only one orientation.

[0032] In one embodiment, each predetermined magnet arrangement portion comprises a predetermined number of magnets having respective predetermined positions. In a further embodiment, each predetermined magnet arrangement portion comprises a predetermined number of magnets having respective predetermined positions and a predetermined magnetic pole orientation. Preferably, each magnet arrangement portion comprises two or more magnets having respective predetermined positions and optionally a predetermined magnetic pole orientation. More preferably, at least two magnets of the magnet arrangement portion have different magnetic pole orientations, preferably magnetic pole orientations that are antiparallel to each other. Further, two magnets of the magnet arrangement portion may have respective magnetic pole orientations that are aligned at a predetermined angle to each other, for example at a right angle. In a corresponding embodiment of the key, the magnet arrangement portion comprises one or more magnets arranged at respective positions, preferably at least two magnets having different magnetic pole orientations, particularly preferably magnetic pole orientations that are aligned antiparallel to each other.

[0033] The security of the ingot against unauthorized operation can be improved by specifying a particular number of magnets having respective predetermined positions and optionally a predetermined magnetic pole orientation for each magnet arrangement portion. Thus, in particular, various different magnet arrangement portions can be realized for keys having the same geometric shape, whereby the key can be magnetically encoded with respect to the assigned ingot, so that the key can unlock the assigned ingot rather than an ingot that requires a differently magnetically encoded key.

[0034] In one embodiment, the preventing means comprises a preventing element, which is assembled so as to be displaceable between a preventing position where the preventing element prevents rotation of the tablet core within the tablet housing between the open position and the closed position, and a permitting position where the preventing element permits rotation of the tablet core within the tablet housing between the open position and the closed position. Thus, rotation of the tablet core can be easily and surely prevented or permitted as required. Preferably, the preventing element interacts in a form-fitting manner with the tablet housing and the tablet core in the closed position, and is thus designed to prevent rotation of the tablet core within the tablet housing.

[0035] Preferably, the preventing means comprises a plurality of preventing elements, which are assembled so as to be displaceable between respective preventing positions where the preventing elements prevent rotation of the tablet core within the tablet housing between the open position and the closed position, and respective permitting positions where the preventing elements permit rotation of the tablet core within the tablet housing between the open position and the closed position.

[0036] One or more of the preventing elements may be assembled so as to be displaceable, for example, in the axial direction and / or the radial direction with respect to the rotation axis of the tablet core.

[0037] Preferably, one or more preventing elements displaceable in the axial direction and one or more preventing elements displaceable in the radial direction are provided. Thus, good vibration resistance of the tablet mechanism and an improvement in safety against tampering are achieved.

[0038] In one embodiment, the tablet core has a receiving portion in which the preventing element is assembled so as to be displaceable. In the case of a large number of preventing elements, the tablet core preferably has a large number of receiving portions in which the respective preventing elements are assembled so as to be displaceable. Thus, a particularly compact design of the tablet can be achieved. The receiving portion may be formed, for example, by a blind hole or a through hole provided in the tablet core, or may be formed by a circumferential receiving portion at least partially formed by the tablet core.

[0039] In a further embodiment, the tablet housing has a receiving portion in which the prevention element is displaceably assembled. In the case of a large number of prevention elements, the tablet housing preferably has a large number of receiving portions in which the respective prevention elements are displaceably assembled. In this way, a particularly robust design of the tablet can be achieved.

[0040] Furthermore, the prevention element may be displaceably assembled within a receiving portion formed by both the tablet core and the tablet housing. This is possible, for example, for a prevention element consisting of a plurality of members.

[0041] When one or more receiving portions are arranged in the tablet housing, preferably, one or more assigned recesses are provided in the tablet core to allow the prevention element to sink in at the prevention position and thus prevent rotational movement between the tablet core and the tablet housing. When one or more receiving portions are arranged in the tablet core, preferably, one or more assigned recesses are provided in the tablet housing to engage the prevention element at the prevention position and thus prevent rotational movement between the tablet core and the tablet housing.

[0042] In one embodiment, the prevention means comprises a plurality of prevention elements, which are assembled within respective receiving portions provided in the tablet housing and / or the tablet core. The receiving portions are arranged so as to surround the rotational axis of the tablet core. The prevention elements engage within respective assigned recesses provided in the tablet core and / or the tablet housing at the prevention position. Preferably, at least two, preferably all, of the receiving portions and / or the assigned recesses arranged so as to surround the rotational axis of the tablet core have different distances from the rotational axis of the tablet core respectively. In this way, it is possible to prevent the prevention element arranged within a given receiving portion from engaging within a recess different from the recess assigned to the receiving portion and from interfering with the rotational movement between the tablet core and the tablet housing when the tablet core is rotated.

[0043] The anti - means, in particular one or more anti - elements, are preferably arranged at a predetermined distance from the lock - side contour, and preferably, thereby, when the key is attached to the first end of the lock core, the anti - means, in particular one or more anti - elements, are prevented from coming into direct contact with the attached key. Preferably, one or more receiving parts and / or assigned recesses are spaced apart from the lock - side contour.

[0044] In one embodiment, the lock has a retaining element which is configured to hold the anti - element in the closed position, in particular by a magnetic interaction between the retaining element and the anti - element, when the key is removed. Thereby, the vibration resistance of the lock is improved, so that even when mechanical vibrations or oscillations occur when the key is removed, the anti - element is reliably held in the closed position, and thus, when the key is removed, the lock is prevented from opening and closing. In the case of a plurality of anti - elements, the retaining element may preferably be designed to hold the plurality of anti - elements in the closed position by a magnetic interaction between the retaining element and the anti - elements when the key is removed.

[0045] The magnetic interaction between the retaining element and a single anti - element or a plurality of anti - elements is preferably a magnetically attracting interaction. However, it is also possible that the magnetic interaction between the retaining element and a single anti - element or a plurality of anti - elements is a magnetically repelling interaction.

[0046] For example, the anti - element may be a magnet or may comprise a magnet, and the retaining element may be a magnet or may consist of a ferromagnetic material in the form of, for example, a ferromagnetic metal plate, such as a steel plate, or a ferromagnetic pin, such as a steel pin.

[0047] In one embodiment, the prevention element is moved to an allowable position when a key having a predetermined magnet arrangement is attached to the first end of the lock core, that is, it is configured to be moved to the allowable position by a magnetic interaction between the prevention element and the magnet arrangement, particularly magnetic repulsion. In many cases of the prevention element, the prevention element is preferably moved to the allowable position when a key having a predetermined magnet arrangement is attached to the first end of the lock core, that is, it is configured to be moved to the allowable position by a magnetic interaction between the prevention element and the magnet arrangement, particularly magnetic repulsion. Unlocking by magnetic repulsion between the magnet arrangement and one or more prevention elements enables a reliable and smoothly operating unlocking mechanism.

[0048] Preferably, the magnet arrangement has an assigned magnet for each prevention element, particularly preferably each assigned magnet.

[0049] In one embodiment, the prevention element is a magnet or includes a magnet. In many cases of the prevention element, at least one of these prevention elements, preferably many prevention elements, is a magnet or includes a magnet. Thus, the prevention element can be held in the closed position by a magnetically attracting interaction with a holding element provided, for example, when the key is removed. Further, thus, the prevention element can be moved to the allowable position by a magnetically repulsive interaction with the magnet of the key's magnet arrangement, for example, when the key is attached to the first end of the lock core.

[0050] In particular, the prevention element may have a magnet and a sleeve surrounding the magnet, particularly a metal sleeve. Thus, when preventing the rotation of the lock core within the lock housing, a greater shear force resistance of the prevention element is achieved, thereby improving the durability of the lock.

[0051] In particular, the prevention element may have a design consisting of a plurality of members. For example, it may include a magnet and a steel pin magnetically connected to the magnet. In this way, the steel pin causes the rotation of the lock core within the lock housing at the prevention position, thereby improving the durability of the lock.

[0052] In one embodiment, the lock has a contact surface arrangement portion for contacting a predetermined magnet arrangement portion, and the prevention means is arranged and configured to allow the rotation of the lock core within the lock housing between the open position and the closed position when the predetermined magnet arrangement portion contacts the contact surface arrangement portion, particularly in a predetermined orientation. This facilitates the handling of the lock because the user can confirm that the key is properly attached to the lock by contact with the contact surface arrangement portion. Furthermore, by arranging the magnet arrangement portion relative to the contact surface arrangement portion, the distance between the magnet arrangement portion and the prevention means can be kept as small as possible, thereby enhancing the magnetic interaction between the magnet arrangement portion and the prevention means.

[0053] In particular, the contact surface arrangement portion may have one or more contact surfaces provided for contacting one or more magnets of the magnet arrangement portion. The contact surface arrangement portion is arranged such that the magnet arrangement portion contacts the contact surface arrangement portion, particularly when the key is assembled. One or more contact surfaces of the contact surface arrangement portion may be arranged particularly at the first end of the lock core and / or on the lock housing.

[0054] When the prevention means includes one or more prevention elements, the prevention element is preferably arranged within the range of one or more contact surfaces of the contact surface arrangement portion, so that when the magnet arrangement portion is in contact, a magnetic interaction occurs between the magnet arrangement portion and the prevention element, causing the prevention element to move to the allowable position.

[0055] In one embodiment, the abutment surface arrangement is arranged completely or at least partially separately from the lock-side contour part, for example, offset radially outwards or inwards with respect to the rotation axis of the lock core. In the corresponding embodiment of the key, the magnet arrangement is arranged completely or at least partially outside the key-side contour part. 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.

[0056] In one embodiment, the abutment surface arrangement is at least partially arranged on the lock-side contour part, preferably on the inner surface of the receiving part of the lock-side contour part. In the corresponding embodiment of the key, the magnet arrangement is at least partially arranged on the key-side contour part. In this way, the lock can be better protected against operation by the magnet held from the outside.

[0057] In one embodiment, the lock core is formed of a plurality of parts and has a core part arranged in the inner passage of the lock housing and a contour part having a lock-side contour part, and the core part and the contour part are connected to each other so as not to be relatively rotatable. For this purpose, the core part and the contour part may have corresponding contour parts, for example, such that the core part and the contour part engage with each other in a form-fitting manner. The core part and the contour part may be held to each other by pins or screws, for example, screws extending through the core part and screwed into the inner contour part of the contour part.

[0058] With the design of the lock core consisting of a plurality of parts, especially the design having a core part and a contour part, it is possible to provide the lock with a desired lock-side contour part, for example, by appropriately selecting a suitable contour part from a variety of contour parts as required.

[0059] In one embodiment, the key has a wall thickness of at least 4 mm. Preferably, the key-side contour part of the key has a wall thickness of at least 4 mm. In this way, higher torque transmission is possible with the key. Preferably, the lock-side contour part is correspondingly designed to assemble the key-side contour part having a wall thickness of at least 4 mm.

[0060] The key is preferably at least partially formed of a metal that enables high torque transmission. The grip portion of the key preferably extends laterally with respect to the axis of rotation of the key by at least 2 cm, more preferably at least 3 cm, and particularly preferably at least 4 cm, with the intention of operating the key. In this way, it becomes easier for the user to apply a higher torque to the key and, thus, to transmit it to the lock core if the key is assembled to the lock core of the lock.

[0061] Further features and advantages of the lock, key and lock system will become apparent from the following description of exemplary embodiments with reference to the accompanying drawings.

Brief Description of the Drawings

[0062]

Figure 1A

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[0063] Figures 1A - 1G show a first exemplary embodiment of a tablet, a key, and a tablet system. Figure 1A shows a perspective view of the key 2 from an upper - diagonal angle. Figure 1B shows a partial perspective view of the key 2 from a lower - diagonal angle. Figure 1C shows the tablet 20 from perspective views from upper - diagonal and front - diagonal angles respectively. Figure 1D shows the tablet 20 with the key 2 assembled from perspective views from upper - diagonal and front - diagonal angles respectively. Figures 1E and 1F show cross - sectional views of the tablet 20 and the key 2, that is, a cross - sectional view before the key 2 is assembled to the tablet 20 (Figure 1E) and a cross - sectional view after assembly (Figure 1F). Figure 1G shows a side view of the tablet 20 with the key 2 assembled in an installation situation.

[0064] Both the key 2 and the tablet 20 form the tablet system 80.

[0065] In this example, the tablet 20 is designed as a window tablet, and thus, the tablet system 80 is designed as a window tablet system. Alternatively, the tablet 20 may be designed as a rod tablet or an axial tablet, and correspondingly, the tablet system 80 may be designed as a rod tablet system or an axial tablet system.

[0066] The key 2 is a socket key having a knob portion 4 and a mounting portion 6 integrally formed in this example. The mounting portion has a key-side contour portion 8, and this key-side contour portion 8 is designed as a polygonal contour portion, that is, a quadrangular convex portion in this example. However, other key-side contour portions 8 are also possible. The mounting portion 6 of the key has a flange portion 10 having a magnet arrangement portion 12 surrounding the key-side contour portion 8, and the magnet arrangement portion 12 includes a number of magnets 14 having a predetermined position and a predetermined magnetic pole orientation. The magnetic pole orientations of the individual magnets are marked with the symbols "N" or "S" in FIG. 1B, whereby the surface marked with the symbol "N" in FIG. 1B corresponds to the magnetic N pole, and the surface marked with the symbol "S" in FIG. 1B corresponds to the magnetic S pole. In FIGS. 1E to 1F, the magnetic pole orientations of the magnets shown in both figures are also marked with "N" and "S", whereby "N" indicates the arrangement of the magnetic N poles of each magnet, and "S" indicates the arrangement of the magnetic S poles of each magnet. As can be seen in FIGS. 1E to 1F, the magnets 14 marked with the symbols "N" and "S" have magnetic pole orientations that are antiparallel to each other.

[0067] The window tablet 20 has a tablet housing 22 having an inner passage 24 in which a tablet core 26 is rotatably assembled inside about an axis A. This tablet housing 22 has a flange portion 30 on the front side 28 of the window tablet 20, and a housing body 32 having a male thread 34 extends from this flange portion 30.

[0068] For assembly, first, the window tablet 20 may be inserted into the opening 90 of the thin sheet metal door 92 with the housing body 32, and the flange portion 30 may be brought into contact with the sheet metal door 92. Then, the nut 36 is screwed onto the male thread 34 from the back side, whereby the window tablet 20 can be fixed to the sheet metal door 92.

[0069] At the first end 38 of the lock core 26 that is accessible from the front 28, the lock core 26 is formed for the purpose of assembling the key 2 so as to transmit torque. For this purpose, the lock core 26 has, at its first end 38, a lock-side contour portion 40 corresponding to the key-side contour portion 8. In this case, the lock-side contour portion 40 is designed as a polygonal contour portion, that is, a square recess for accommodating the key-side contour portion 8 designed as a square protrusion.

[0070] At the second end 42 of the lock core 26 opposite to the first end 38, the lock core 26 supports a rotary tongue 44. The rotary tongue 44 is non-rotatably connected to the lock core 26 via corresponding contour portions 46, 48 provided on the lock core 26 and the rotary tongue 44 and is fixed by a screw 50. By assembling and rotating the key 2, the lock core 26 and thus the rotary tongue 44 can be rotated between an open position and a closed position. FIG. 1G shows the closed position in the installed state where the rotary tongue 44 is engaged with the back side of the prevention surface 94 of the frame 96 surrounding the sheet metal door 92, thus locking the sheet metal door 92. For example, when the lock core 26 is rotated by 90°, the lock core 26 or the rotary tongue 44 moves to an open position where the rotary tongue 44 no longer engages with the back side of the prevention surface 94, thereby enabling the sheet metal door 92 to be opened.

[0071] The window lock 20 further includes a prevention means 52 for preventing rotation of the lock core 26 within the lock housing 22 between the open position and the closed position when the key 2 is removed. In the example shown in FIGS. 1A to 1G, this prevention means 52 includes a plurality of prevention elements 54 displaceably assembled within the respective edge-side receiving portions 56 of the lock core 26. These prevention elements 54 may be displaced between a prevention position (see FIG. 1E) and an allowable position (see FIG. 1F) within each receiving portion 56. In the prevention position (FIG. 1E), the prevention element 54 engages within each recess 58 of the forming element 60 attached to the lock housing 22, and thus prevents rotation of the lock core 26 within the lock housing 22 between the open position and the closed position in a form-fitting manner. In the allowable position (FIG. 1F), the prevention element 54 is retracted into the receiving portion 56 and does not engage within the recess 58, whereby in this allowable position, the prevention element 54 allows rotation of the lock core 26 within the lock housing 22 between the open position and the closed position.

[0072] The prevention means 52 is configured to allow rotation of the lock core 26 within the lock housing 22 between the open position and the closed position when the key 2 having the magnet arrangement portion 12 is assembled to the first end portion 38 of the lock core 26. This means that in the window lock 20, the prevention element 54 is designed as a magnet, and the number, position, and magnetic pole orientation of the magnets 14 of the magnet arrangement portion 12 of the key 2 correspond to the number, position, and magnetic pole orientation of the prevention elements 54. Thus, when the key 2 is assembled, the magnets 14 of the magnet arrangement portion 12 and each prevention element 54 having the same magnetic pole face each other, and thereby, a magnetic repulsive force that moves the prevention element 54 from each recess 58 to the allowable position acts on the prevention element 54 to achieve this.

[0073] Thus, while the window lock 20 can be unlocked by a matching key 2 having a predetermined magnetic arrangement portion, the same type of key having various different magnetic arrangement portions with respect to the key-side contour portion 8 does not unlock the window lock 20. Accordingly, the window lock 20 and the key 2 are magnetically encoded via the number, position, and magnetic pole orientation of the magnets 14 in the magnet arrangement portion 12 and the corresponding number, position, and magnetic pole orientation of the prevention element 54.

[0074] When the key 2 is removed, in order to hold the prevention element 54 in the prevention position, the lock housing 22 is provided with a holding element 62 in the form of a ferromagnetic thin plate, for example a thin steel plate, having a central opening 63 for the lock-side contour portion 40. The prevention element 54 is held in the recess 58 by magnetic attraction between the prevention element 54 and the holding element 62. The strength of the magnet 14 and the strength of the prevention element 54 designed as a magnet are adapted such that when the key 2 is assembled, the magnetic attraction force between the prevention element 54 and the holding element 62 is canceled by the magnetic repulsive force between the magnet 14 and the prevention element 54, and the prevention element 54 moves to the allowable position.

[0075] In order to increase the durability of the window lock 20, in one possible embodiment, magnets each surrounded by a steel sleeve may be used as the prevention element 54.

[0076] In this example, a marking 66 is provided on the annular end face 64 of the lock housing 22 formed by one side of the holding element 62, and this marking 66 corresponds to the marking 16 on the key 2 for indicating to the user the proper orientation of the key 2 with respect to the window lock 20 regarding the proper orientation of the magnet arrangement portion 12 with respect to the prevention element 54.

[0077] In the window lock 20, the end face 64 simultaneously forms the contact surface 67 of the contact surface arrangement part 68 of the window lock 20, and this contact surface 67 is provided for contacting the magnet arrangement part 12 in the direction specified by the markings 16, 66. The contact surface 67 is separate from the lock-side contour part 40, that is, it is arranged radially outside the lock-side contour part 40 with respect to the rotation axis A. Correspondingly, the prevention element 54 is also arranged separately from the lock-side contour part 40, that is, within the range of the contact surface 67.

[0078] Thus, when the magnet arrangement part 12 is in contact with the contact surface 67, the unlocking function caused by the magnetic interaction between the magnet arrangement part 12 and the prevention element 54 is spatially separated by design from the torque transmission function caused by the form-fitting interaction between the key-side contour part 8 and the lock-side contour part 40. As a result, without the need to directly incorporate movable or delicate components, such as magnets and prevention elements, into the lock-side contour part 40 and the key-side contour part 8, the lock-side contour part 40 and the key-side contour part 8 can be optimized for torque transmission, and in particular, can be designed more robustly.

[0079] Figures 2A to 2G show a second exemplary embodiment of a lock, a key, and a lock system. In Figure 2A, the key 102 and the lock 120 are shown in a perspective view. In Figure 2B, the key 102 and the lock 120 are shown in a perspective view that is partially cut away and corresponds to the cross-sectional plane marked "IIc" in Figure 2E. In Figures 2C and 2D, the key 102 and the lock 120 are shown in cross-sectional views by the cross-sectional plane marked "IIc" in Figure 2E, that is, the cross-sectional view before the key 102 is assembled (Figure 2C) and the cross-sectional view after the key 102 is assembled (Figure 2D). Figure 2E shows a cross-sectional view corresponding to the cross-sectional plane marked "IIe" in Figure 2C. Figure 2F shows a cross-sectional view corresponding to the cross-sectional plane marked "IIf" in Figure 2D. Figure 2G shows a cross-sectional view corresponding to Figure 2F after the lock core is rotated by 45°.

[0080] The key 102 and the lock 120 together form a lock system 180.

[0081] In this example, the tablet 120 is designed as a window tablet, and thus, the tablet system 180 is designed as a window tablet system. Alternatively, the tablet 120 may be designed as, for example, a rod tablet or an axial tablet, and correspondingly, the tablet system 180 may be designed as a rod tablet system or an axial tablet system.

[0082] The key 102 is also a socket key having a grip portion 104 and an attachment portion 106 formed integrally in this example. The attachment portion 106 has a key-side contour portion 108, and this key-side contour portion 108 is formed as a polygonal contour, that is, a cross-shaped protrusion in this example. However, another key-side contour portion 108 is also possible. In the key 102, a magnet arrangement portion 112 having a plurality of magnets 114 is arranged on the key-side contour portion 108. The magnets 114 are inserted into four blind holes 109 in the radial direction of the key-side contour portion 108. The magnets 114 have a predetermined magnetic pole orientation with some shown as "N" (magnetic north pole) and "S" (magnetic south pole) in the drawing.

[0083] The window tablet 120 has a tablet housing 122 having an inner passage 124 in which a tablet core 126 is assembled rotatably about an axis B. This tablet housing 122 has a flange portion 130 on the front side 128 of the window tablet 120, and a housing body 132 having a male thread 134 extends from this flange portion 130. The assembly of the window tablet 120 may be carried out as described for the window tablet 20.

[0084] The tablet core 126 is formed for the purpose of assembling the key 102 so as to transmit torque at a first end 138 accessible from the front side 128. For this purpose, the tablet core 126 has, at its first end 138, a tablet-side contour portion 140 corresponding to the key-side contour portion 108, and this tablet-side contour portion 140 is formed as a cross-shaped recess for accommodating the cross-shaped protrusion of the key-side contour portion 108 formed as a cross-shaped protrusion in this example.

[0085] At the second end 142 of the tablet core 126, which is opposite to the first end 138, the tablet core 126 supports a rotating tongue piece 144. This rotating tongue piece 144 is non-rotatably connected to the tablet core 126 via corresponding contour portions 146 and 148 provided on the tablet core 126 and the rotating tongue piece 144, and is fixed by a screw 150. When the key 102 is assembled, rotating the tablet core 126 and thus the rotating tongue piece 144 between the open position and the closed position is performed in the same manner as described above for the window lock 20.

[0086] The window lock 120 further includes a preventing means 152 for preventing the rotation of the tablet core 126 within the lock housing 122 between the open position and the closed position when the key 102 is removed. In the example shown in FIGS. 2A to 2G, this preventing means 152 has a plurality of preventing elements 154 assembled to be displaceable in the radial direction with respect to the rotation axis B within a housing portion 156 formed by the lock housing 122 and the tablet core 126. Accordingly, the housing portion 156 includes a first portion 156a formed by the lock housing 122 and a second portion 156b formed by the tablet core 126. In the lock 120, each of the preventing elements 154 is formed of two members, and includes a steel pin 154a and a magnet 154b, respectively. The steel pin 154a and the magnet 154b are held together by the magnetic force therebetween.

[0087] The anti-rotation element 154 may be displaced between a blocking position (see FIGS. 2C and 2E) and an allowing position (see FIGS. 2D and 2F) within each receiving portion 156. In the blocking position (FIGS. 2C and 2E), the anti-rotation element 154 is arranged such that each steel pin 154a is disposed within both the first portion 156a and the second portion 156b of each receiving portion 156, and thus is arranged to prevent rotation of the lock core 126 within the lock housing 122 between the open and closed positions in a form-fitting manner. In the allowing position (FIGS. 2D and 2F), the anti-rotation element 154 is arranged such that the steel pins 154a are disposed only within the first portion 156a of the receiving portion 156 and the magnets 154b are disposed only within the second portion 156b of the receiving portion 156. Thereby, in the allowing position, the anti-rotation element 154 allows rotation of the lock core 126 within the lock housing 122 between the open and closed positions, and the lock core 126 is arranged to be able to rotate as shown in FIG. 2G by separation of each of the steel pins 154a from the magnet 154b.

[0088] The anti-rotation means 152 is configured to allow rotation of the lock core 126 within the lock housing 122 between the open and closed positions when the key 102 having the magnet arrangement portion 112 is assembled to the first end portion 138 of the lock core 126. This means that in the window lock 120, the number, position, and magnetic pole orientation of the magnets 114 of the magnet arrangement portion 112 of the key 102 correspond to the number, position, and magnetic pole orientation of the magnets 154b of the anti-rotation element 154. Thereby, when the key 102 is assembled, each magnet 114 of the magnet arrangement portion 112 and each magnet 154b of the anti-rotation element 154 face each other with the same magnetic poles, and thereby a magnetic repulsive force that moves the magnets 154b and thus each steel pin 154a within the receiving portion 156 to the allowing position is achieved by acting on the magnet 154b.

[0089] In this way, the window lock 120 can be unlocked by a matching key 102 having a predetermined magnetic arrangement, while the window lock 120 is not unlocked by the same type of key having various different magnetic arrangements with respect to the key-side contour portion 108. Therefore, the window lock 120 and the key 102 are magnetically encoded via the number, position, and magnetic pole orientation of the magnets 114 in the magnet arrangement portion 112 and the corresponding number, position, and magnetic pole orientation of the magnets 154b of the prevention element 154.

[0090] When the key 102 is removed, a holding element 162 in the form of a ferromagnetic element, for example a steel element, is provided in the lock core 126 to hold the prevention element 154 in the prevention position. The magnetic attraction between the magnet 154b of the prevention element 154 and the holding element 162 holds the magnet 154b and thus the prevention element 154 as a whole in the prevention position. The strength of the magnet 114 and the strength of the magnet 154b of the prevention element 154 are adapted such that when the key 102 is assembled, the magnetic attraction force between the magnet 154b and the holding element 162 is cancelled by the magnetic repulsive force between the magnet 114 and the magnet 154b, and the prevention element 154 is moved to the allowable position.

[0091] The lock-side contour portion 140 and the key-side contour portion 108 are asymmetric in this example, whereby the key-side contour portion 108 can be inserted into the lock-side contour portion 140 only in a predetermined orientation that ensures proper alignment of the magnet arrangement portion 112 with respect to the magnet 154b of the prevention element 154 when the key 102 is inserted.

[0092] The four side surfaces of the lock-side contour portion 140 form the contact surfaces 167 of the contact surface arrangement portion 168 of the window lock 20 in the window lock 120, and this contact surface 167 is provided for contacting the magnet arrangement portion 112 in an orientation specified by the asymmetric shape of the lock-side contour portion 140 and the key-side contour portion 108. The contact surface 167 is arranged on the lock-side contour portion 140 of the window lock 120. Correspondingly, the prevention element 154 is also arranged on the lock-side contour portion 140, that is, within the range of the contact surface 167.

[0093] In this way, the safety of the window lock 120 against malfunction is enhanced. This is because easy access from the outside to the abutment surface 167 becomes impossible, and as a result, it becomes more difficult to operate the window lock 120 without the appropriate key due to the attachment of the magnet.

[0094] Figures 3A - 3L show a third exemplary embodiment of a lock, a key, and a lock system. In Figures 3A and 3B, the key 202 is shown in a perspective view from above at an angle (Figure 3A) and a perspective view from below at an angle (Figure 3B). In Figure 3C, the lock 220 is shown in perspective views from above and in front at an angle, respectively, with some parts shown in a dashed - line transparency for illustrative purposes. In Figure 3D, side views of the key 202 and the lock 220 are shown. In Figure 3E, a top view of the lock 220 is shown. In Figures 3F and 3G, perspective views of a partially - broken - away section corresponding to the cross - sectional plane marked "IIIf" in Figure 3E are shown, namely, a perspective view before the key 202 is assembled (Figure 3F) and a perspective view after the key 202 is assembled (Figure 3G). Also, in Figure 3F, an enlarged detailed cross - sectional view in the line - of - sight direction marked "X" in the perspective view is shown as a dotted - line circle. In Figures 3H and 3I, cross - sectional views corresponding to the cross - sectional plane marked "IIIh" in Figure 3E are shown, namely, a cross - sectional view before the assembly of the key 202 (Figure 3H) and a cross - sectional view after the assembly of the key 202 (Figure 3I). In Figures 3J, 3K, and 3L, cross - sectional views corresponding to the cross - sectional plane marked "IIIj" in Figure 3D are shown, namely, a cross - sectional view before the assembly of the key 202 (Figure 3J), a cross - sectional view after the assembly of the key 202 (Figure 3K), and a cross - sectional view after the lock core 226 is rotated by 45° by the assembled key 202 (Figure 3L).

[0095] The key 202 and the lock 220 together form a lock system 280.

[0096] In this example, the lock 220 is designed as a window lock, and correspondingly, the lock system 280 is designed as a window lock system. Alternatively, the lock 220 may be designed as, for example, a rod lock or an axial lock, and correspondingly, the lock system 280 may be designed as a rod lock system or an axial lock system.

[0097] The key 202 is a socket key having a grip portion 204 and a mounting portion 206 integrally formed in this example. The mounting portion 206 has a key-side contour portion 208, and this key-side contour portion 208 includes four convex portions 209 in the shape of an annular segment in this example. However, another key-side contour portion 208 is also possible. The mounting portion 206 of the key has a magnet arrangement portion 212 including a number of magnets 214, 215 each having a predetermined position and a predetermined magnetic pole orientation. Some of the magnets 214 in this magnet arrangement portion 212 are arranged on the surface 210 of the socket portion 206, and this surface is recessed with respect to the annular segment-shaped convex portions 209 and is located between the annular segment-shaped convex portions 209. Another magnet 215 of the magnet arrangement portion 212 is arranged on the central surface 211 recessed with respect to the surface 210.

[0098] The magnetic pole orientations of the individual magnets 214, 215 are partially marked in the drawing with "N" (magnetic north pole) and "S" (magnetic south pole).

[0099] The window lock 220 has a lock housing 222 having an inner passage 224 in which a lock core 226 is rotatably assembled inside about an axis C (shown partially transparent by a dashed line in FIG. 3C for illustrative purposes). This lock housing 222 has a flange portion 230 on the front side 228 of the window lock 220, and from this flange portion 230, a housing body 232 having a male thread 234 extends. The assembly of the window lock 220 may be carried out as described for the window lock 20.

[0100] The lock core 226 is formed for the purpose of assembling the key 202 so as to transmit torque at the first end 238 that is accessible from the front side 228. For this purpose, the lock core 226 has, at its first end 238, a lock-side contour portion 240 corresponding to the key-side contour portion 208. In this example, the lock-side contour portion 240 is formed in the form of four recesses 241 corresponding to the annular segment-shaped protrusions 209.

[0101] At the second end 242 of the lock core 226, which is opposite to the first end 238, the lock core 226 supports a rotating tongue 244. The rotating tongue 244 is non-rotatably connected to the lock core 226 via corresponding contour portions 246 and 248 provided on the lock core 226 and the rotating tongue 244, and is fixed by a screw 250. When the key 202 is assembled, rotating the lock core 226 and thus the rotating tongue 244 between the open position and the closed position is carried out in the same manner as described above for the window lock 20.

[0102] The window lock 220 also includes a preventing means 252 for preventing rotation of the lock core 226 within the lock housing 222 between the open position and the closed position when the key 202 is removed. In the example shown in FIGS. 3A to 3L, this preventing means 252 includes an axial preventing element 254 for locking in the axial direction and a radial preventing element 255 for locking in the radial direction.

[0103] The axial preventing element 254 is formed of two members, each including a steel pin 254a and a magnet 254b. The axial preventing element 254 is axially displaceably assembled in a receiving portion 256 formed by the lock core 226 and the lock housing 222, respectively. Therefore, this receiving portion 256 includes a first portion 256a formed by the lock housing 222 and a second portion 256b formed by the lock core 226.

[0104] The prevention element 254 may be displaced between a prevention position (see FIG. 3H) and an allowable position (see FIG. 3I) within each receiving portion 256. In the prevention position (FIG. 3H), the prevention element 254 is arranged such that each steel pin 254a is disposed within both the first portion 256a and the second portion 256b of each receiving portion 256, and thus is arranged to prevent the rotation of the lock core 226 within the lock housing 222 between the open position and the closed position in a form - fitting manner. In the allowable position (FIG. 3I), the prevention element 254 is arranged such that the steel pin 254a is disposed only within the first portion 256a of the receiving portion 256 and the magnet 254b is disposed only within the second portion 256b of the receiving portion 256. Accordingly, in the allowable position, the prevention element 254 allows the rotation of the lock core 226 within the lock housing 222 between the open position and the closed position, and when the radial prevention element 255 is also in the allowable position, the lock core 226 is arranged to be rotatable by the separation of each steel pin 254a from the magnet 254b.

[0105] The radial prevention element 255 also has a design consisting of a plurality of members, and includes a steel pin 255a, magnets 255b, and two slides 255c, 255d. The steel pin 255a, the magnets 255b, and the two slides 255c, 255d are arranged within the accommodation portion 257 of the lock core 226. This accommodation portion has a central axial portion 257a in which the steel pin 255a and the magnets 255b are assembled so as to be axially displaceable, and a radial portion 257b in which the slides 255c, 255d are assembled so as to be radially displaceable. The slides 255c, 255d may be displaced within the radial portion 257b of the accommodation portion 257 between the respective prevention positions (see FIG. 3F) and the allowance positions (see FIG. 3G) of the radial prevention element 255. In the prevention position (FIG. 3F), the slides 255c, 255d of the prevention element 255 are engaged within the respective radial recesses 259 provided in the lock housing 222, and thus, rotation of the lock core 226 within the lock housing 222 between the open position and the closed position is prevented in a form-fitting manner. In the allowance position (FIG. 3G), the slides 255c, 255d of the prevention element 255 are retracted within the accommodation portion 257 and are not engaged within the recess 259. Accordingly, in the said allowance position, the prevention element 255 allows rotation of the lock core 226 within the lock housing 222 between the open position and the closed position.

[0106] The prevention means 252 is configured to allow rotation of the lock core 226 within the lock housing 222 between the open position and the closed position when the key 202 having the magnet arrangement portion 212 is assembled to the first end portion 238 of the lock core 226.

[0107] Regarding the axial prevention element 254, this means that in the window lock 220, the number, position, and magnetic pole orientation of the magnets 214 in the magnet arrangement portion 212 of the key 202 correspond to the number, position, and magnetic pole orientation of the magnets 254b of the axial prevention element 254. As a result, when the key 202 is assembled, each magnet 214 of the magnet arrangement portion 212 and each magnet 254b of the axial prevention element 254 having the same magnetic pole face each other. Thus, the magnetic repulsive force that moves the prevention element 254 to the allowable position is achieved by acting on the magnet 254b and thus on each prevention element 254.

[0108] Regarding the radial prevention element 255, unlocking is achieved by the window lock 220 such that the position and magnetic pole orientation of the magnet 215 correspond to the position and magnetic pole orientation of the magnet 255b. Thus, when the key 202 is assembled, the magnet 215 of the magnet arrangement portion 212 and the magnet 255b are positioned facing each other with the same magnetic pole. Thus, the magnetic repulsive force that moves the steel pin 255a in the directions of the slides 255c, 255d is achieved by acting on the magnet 255b and thus on the steel pin 255a. The slides 255c, 255d and the steel pin 255a are provided with corresponding inclined surfaces 264, 265. These inclined surfaces 264, 265 interact when the steel pin 255a is moved in the directions of the slides 255c, 255d. Thus, the slides 255c, 255d are pulled back into the housing portion 257, and thus the prevention element 255 is moved to the allowable position.

[0109] Thus, the window lock 220 can be unlocked by a matching key 202 having a predetermined magnetic arrangement portion, while the window lock 220 is not unlocked by the same type of key having various different magnetic arrangement portions with respect to the key-side contour portion 208. Therefore, the window lock 220 and the key 202 are magnetically encoded via the number, position, and magnetic pole orientation of the magnets in the magnet arrangement portion and the corresponding number, position, and magnetic pole orientation of the prevention element 254.

[0110] When the key 202 is removed, a holding element 262 in the form of a ferromagnetic element is provided in the lock core 226 to hold the axial prevention element 254 in the prevention position. The prevention element 254 is held in the prevention position by magnetic attraction between the magnet 254b of the prevention element 254 and the holding element 262. The strength of the magnet 214 and the strength of the magnet 254b of the prevention element 254 are adapted such that when the key 202 is assembled, the magnetic attraction force between the magnet 254b and the holding element 262 is canceled by the magnetic repulsive force between the magnet 214 and the magnet 254b, and the prevention element 254 is allowed to move to the allowable position.

[0111] Furthermore, when the key 202 is removed, a holding element 263 in the form of a ferromagnetic element is provided at the central receiving portion 257a in the lock core 226 to hold the radial prevention element 255 in the prevention position. Further, corresponding magnets 266 are provided on the slides 255c, 255d, and the two magnets 266 are arranged so as to face each other with the same magnetic poles. The magnetic attraction between the magnet 255b and the holding element 263 holds the magnet 255b and thus also the steel pin 255a at a position away from the slides 255c, 255d. The magnetic repulsive force between the corresponding magnets 266 of the slides 255c, 255d holds the slides 255c, 255d in the prevention position within the recess 241 and thus within the prevention element 255. The strength of the magnet 215, the strength of the magnet 255b, and the strength of the magnet 266 are such that when the key 202 is assembled, the magnetic attraction force between the magnet 255b and the holding element 263 is canceled by the magnetic repulsive 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, 255d, these slides 255c, 255d are drawn into the receiving portion 257 against the magnetic repulsive force of the magnet 266 by the interaction of the inclined surfaces 264, 265, and thus the radial prevention element 255 is adapted to be moved to the allowable position.

[0112] In the window lock 220, the surface 267 between the concave portion 241 and the centrally protruding surface 268 forms each contact surface of the contact surface arrangement portion 269 provided for contacting the magnet arrangement portion 212 of the window lock 220.

[0113] A particularly high level of vibration resistance is imparted to the window lock 220 by a combination of a radially movable prevention element and an axially movable prevention element.

[0114] Figures 4A to 4E show a fourth exemplary embodiment of a lock, a key, and a lock system. In Figure 4A, the key 302 and the lock 320 are shown in perspective views from obliquely below and obliquely behind, respectively. In Figure 4B, the key 302 is shown in a view from below. In Figure 4C, the lock 320 is shown in a top view with respect to the lock-side contour portion. In Figures 4D to 4E, the key 302 and the lock 320 are shown in 3 / 4 sectional views corresponding to the sectional plane marked with the reference symbol "IVd / e" in Figures 4B to 4C, that is, the 3 / 4 sectional view before the key 302 is assembled (Figure 4D) and the 3 / 4 sectional view after the key 302 is assembled (Figure 4E).

[0115] The key 302 and the lock 320 together form a lock system 380.

[0116] The lock 320 basically has a structure similar to that of the lock 20 shown in Figures 1A to 1G. For this, refer to the above description regarding Figures 1A to 1G. Even if the corresponding components are designed differently in Figures 1A to 1G and Figures 4A to 4E, some of them are marked with the same reference numerals.

[0117] The lock 320 is different from the lock 20 in that the lock core 326 has a contour portion 339 at a first end accessible from the front side 28 of the lock 320, and this contour portion 339 preferably protrudes laterally beyond the flange portion 30 of the lock housing 22 and forms a lock-side contour portion 340 formed as an outer contour portion in this example.

[0118] During installation into the opening provided in the thin wall, the flange portion 30 of the lock housing 22 forms a contact surface against one side of the thin wall. A nut is screwed onto the male thread 34 from the other side of the thin wall, whereby the lock can be fixed within the opening.

[0119] The key 302 has a socket portion 306 having a key-side contour portion 308 in the form of an inner contour portion adapted to the lock-side contour portion 340. Within the concave surface 310 surrounded by the key-side contour portion 308, a plurality of magnets 314 forming a magnet arrangement portion 312 having a predetermined position and magnetic pole orientation are arranged. In the key 302, the gripping portion 304 is formed by a handling contour portion arranged on the back side of the mounting portion 306.

[0120] In the present lock 320, the lock core 326 is designed in a plurality of parts by the contour portion 339 and a core portion 327 arranged within the inner passage 24 of the lock housing 22, and the contour portion 339 and the core portion 327 are connected in a non-rotatable relative manner. For this purpose, the contour portion 339 in this exemplary embodiment has an outer contour portion 370, and the core portion 327 has corresponding inner contour portions 371, for example polygonal contour portions, which are interlocked in a form-fitting manner. In this exemplary embodiment, the lock portion 339 is also connected to the core portion 327 such that a screw 50 guided through the core portion 327 is screwed into the female thread 372 provided in the contour portion 339. The design of the lock core 326 having separate contour portions 339 in a plurality of parts enables selection of a predetermined contour portion from a number of different contour portions as required.

[0121] Alternatively, the contour portion 339 and the core portion 327 may be integrally formed.

[0122] As shown in FIG. 4D, the flange portion 30 of the lock housing 22 may preferably be provided with a circumferential seal 323, for example an O-ring, adjacent to the core portion 327, and this seal seals the lock housing 22 towards the wall and can also prevent moisture from entering between the lock housing 22 and the core portion 327.

[0123] The anti-rotation means 352 of the window lock 320 includes a plurality of anti-rotation elements 354 displaceably assembled in the receiving portions 356 at the edge sides of each of the lock housings 22. These anti-rotation elements 354 may be displaced between an anti-rotation position (see FIG. 4D) and an allowable position (see FIG. 4E) within each receiving portion 356. In the anti-rotation position (FIG. 4D), the anti-rotation elements 354 are engaged in the respective recesses 358 of the lock core 326, and thus prevent the rotation of the lock core 326 within the lock housing 22 between the open position and the closed position in a form-fitting manner. In the allowable position (FIG. 4E), the anti-rotation elements 354 are retracted into the receiving portions 356 and are not engaged in the recesses 358, whereby the anti-rotation elements 354 allow the rotation of the lock core 326 within the lock housing between the open position and the closed position.

[0124] The anti-rotation elements 354 are designed as magnets, and the position and magnetic pole orientation of this magnet are adapted to the magnet arrangement portion 312 of the key 302 such that the anti-rotation elements 354 are moved to the allowable position when the key 302 is assembled (FIG. 4D). For this purpose, the anti-rotation elements 354 designed as magnets and the magnets 314 of the magnet arrangement portion 312 are arranged and aligned such that, in particular when the key 302 is assembled, each anti-rotation element 354 faces the respective magnet 314 of the magnet arrangement portion 314 with an anti-parallel magnetic pole alignment, whereby a force for moving the anti-rotation element 354 to the allowable position acts on and is aligned with the anti-rotation element 354. Further, in this example, a holding element 362 in the form of a ferromagnetic element is provided on the contour portion 339 of the lock core 326 of the lock core 326, and this holding element holds the anti-rotation element 354 in the anti-rotation position (FIG. 4C) when the key 302 is not assembled. The magnets 314 and the anti-rotation elements 354 are adapted such that when the key 302 is assembled, the holding force between the holding element 362 and each anti-rotation element 354 is cancelled by the repulsive force between the magnet 314 and each anti-rotation element 354.

[0125] The ingot-side contour portion 340 and the key-side contour portion 308 are asymmetric in this example, whereby the key-side contour portion 308 can only be arranged in a predetermined orientation with respect to the ingot-side contour portion 308. As a result of the ten anti-elements 354 designed as magnets and the corresponding ten magnets 314 in the magnet arrangement portion 312 in this example, 2 10 = 1024 different possible combinations can be obtained with respect to the magnetic pole directions of the magnets.

[0126] The orientations of the magnetic poles of the respective individual magnets 314 and anti-elements 354 are partially marked in the drawing with "N" (magnetic north pole) and "S" (magnetic south pole).

[0127] In this example, further, the receiving portions 356 for the plurality of anti-elements 354 and the assigned recesses 358 have different distances from the rotation axis D of the ingot core 326 (see FIG. 4C). In this way, in particular during or after the inversion of the ingot core 326 from the closed position, a predetermined anti-element 354 is prevented from entering another receiving portion 356, and thus from preventing the rotation of the ingot core 326 and returning to a prevention position, for example the closed position. As a result, the ingot core 326 can be freely moved, for example, to the closed position. This is because when the key 302 is removed, the anti-elements 354 can only return to their respective closed positions within their respective receiving portions 356.

[0128] Due to the different distances of the receiving portions 356 from the rotation axis D of the ingot core 326, the number of possible combinations with respect to the magnet arrangement portion 312 can be increased. This is because, for example, in addition to the magnetic pole directions of the individual magnets 314, different radial positions with respect to the rotation axis D of the ingot core 326 can also be selected for the individual magnets 314. For this purpose, the magnetic force between the anti-elements 354 and the magnets 314 is preferably adjusted such that the anti-elements 354 can only be moved to their respective allowable positions when the assigned magnets 314 are positioned at a predetermined distance from the rotation axis D.

[0129] Figures 5A - 5E show a fifth exemplary embodiment of a lock, a key, and a lock system. Figure 5A shows the key 402 and the lock 420 in a perspective view. Figure 5B shows the key 402 in a plan view from the front of the key - side contour. Figure 5C shows the lock 420 in a top view with respect to the lock - side contour. Figures 5D - 5E show the key 402 and the lock 420 in 3 / 4 cross - sectional views corresponding to the cross - sectional plane marked with the symbol "Vd / e" in Figures 5B - 5C, that is, the 3 / 4 cross - sectional view before the key 402 is assembled (Figure 5D) and the 3 / 4 cross - sectional view after the key 402 is assembled (Figure 5E).

[0130] Both the key 402 and the lock 420 form a lock system 480.

[0131] The lock 420 basically has an internal structure similar to that of the lock 20 shown in Figures 1A - 1G. For this, refer to the above description regarding Figures 1A - 1G. Even if the corresponding components are designed differently in Figures 1A - 1G and Figures 4A - 4E, some of them are marked with the same reference numerals.

[0132] The lock 420 is different from the lock 20 in that the lock 420 is not designed as a window lock and is designed in the form of a profile cylinder with a locking lug 444. The locking lug 444 is non - rotatably connected to the lock core 426 and may be optionally held in a predetermined position by a spring 445 when the lock 420 is not actuated, as shown in Figure 4A. In this example, the lock housing 422 has the shape of a profile cylinder, whereby the lock 420 can be used instead of a conventional cylinder lock.

[0133] At a first end accessible from the front side 28 of the tablet 420, the tablet core 426 has a tablet-side contour portion 440 formed as an inner contour portion, for example, a quadrangular recess, in this example. Accordingly, the key 402 has an attachment portion 406 provided with a key-side contour portion 408 in the form of a protruding outer contour portion adapted to the tablet-side contour portion 440. Alternatively, the tablet-side contour portion 440 may be formed as an outer contour portion, for example, a quadrangular protrusion, and the key-side contour portion 408 may be formed as an inner contour portion, for example, a quadrangular inner contour portion.

[0134] The preventing means 452 of the window tablet 420 includes a plurality of preventing elements 454 in the form of magnets displaceably assembled in the receiving portions 456 at the edge sides of each of the tablet housings 422. These preventing elements 454 are, in each of the receiving portions 456, in a preventing position where the preventing element 454 engages in each of the recesses 458 of the tablet core (see FIG. 5D), and when assembling the key 402 having a magnet arrangement portion 412 adapted thereto, the preventing element 454 may be displaced between an allowing position (FIG. 5E) where the preventing element 454 is moved to allow rotation of the tablet core 426 within the tablet housing 422.

[0135] In this exemplary embodiment, the tablet core 426 is formed in two parts by a core portion 427 disposed in the inner passage 424 of the tablet housing 422 and a contour portion 439 provided with the tablet-side contour portion 440. The core portion 427 and the contour portion 439 are connected to each other in a non-rotatable relative manner such that the outer contour portion 470 of the core portion engages securely with the inner contour portion 471 of the contour portion 439, and the screw 50 is screwed through the core portion 427 into the female thread 472 provided in the contour portion 439.

[0136] The tablet-side contour portion 440 and the key-side contour portion 408 are asymmetric, whereby the key 402 can be arranged in the tablet-side contour portion 440 only in a predetermined orientation. In this example, as a result of the preventing means 452 having nine preventing elements 454 designed as magnets and correspondingly nine magnets 414 of the magnet arrangement portion 412, 2 9 = 512 different possible combinations are obtained.

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

[0138] Similar to the lock 320, the lock 420 also has a housing portion 456 for the prevention element 454 and an assigned recess 458, each having a different distance from the axis of rotation of the lock core 426 (see FIG. 5C). Thereby, when the lock core 426 is reversed, a predetermined prevention element 454 is prevented from entering another housing portion 456 and thus from returning to a prevention position, for example, an initial position, that would prevent the rotation of the lock core 426.

[0139] In the lock 420, a holding element 462 is formed as an annular thin plate of ferromagnetic metal inserted into the core portion 439.

Explanation of reference numerals

[0140] 2, 102, 202, 302, 402 key 4, 104, 204, 304, 404 grip portion 6, 106, 206, 306, 406 mounting portion 8, 108, 208, 308, 408 key-side contour portion 10 flange portion of the mounting portion 12, 112, 212, 312, 412 magnet arrangement portion 14, 114, 214, 215, 314, 414 magnet 16 marking 20, 120, 220, 320, 420 lock 22, 122, 222, 422 lock housing 24, 124, 224, 424 inner passage 26, 126, 226, 326, 426 lock core 28, 128, 228 front side 30, 130, 230 flange portion of the lock housing 32, 132, 232 housing body 34, 134, 234 male thread 36 nut The first end of the 38, 138, 238 ingot cores The 40, 140, 240, 340, 440 ingot side contour parts The second end of the 42, 142, 242 ingot cores The 44, 144, 244 rotating tongue pieces The 46, 48, 146, 148, 246, 248 corresponding contour parts The 50, 150, 250 screws The 52, 152, 252, 352, 452 prevention means The 54, 154, 254, 255, 354, 454 prevention elements The 56, 156, 256, 257, 356, 456 accommodation parts The 58, 259 recesses The 60 forming element The 62, 162, 262, 263, 362, 462 holding elements The 63 opening The 64 front side The 66 marking The 67, 167, 267, 268 abutting surfaces The 68, 168, 269 abutting surface arrangement parts The 80, 180, 280, 380, 480 ingot system The 90 opening The 92 sheet metal door The 94 prevention surface The 96 frame The 109 blind hole The 154a, 254a, 255a steel pins The 154b, 254b, 255b magnets The first part of the 156 accommodation part The second part of the 156 accommodation part The 164 side surface The 209 convex part The 210 surface The 211 surface The 241 recess The 255c, 255d slides The first part of the 256 accommodation part The second part of the 256 accommodation part The axial direction part of the 257 accommodation part Radial portion of the housing 257 264, 265 Inclined surfaces 266 Magnet 310 Surface 323 Seal 327, 427 Core portions 339, 439 Contour portions 358, 458 Recesses 370, 470 Outer contour portions of the contour portions 371, 471 Inner contour portions of the core portions 372, 472 Female thread ridges of the contour portions 444 Locking lugs 445 Spring A, B, C, D Axes of rotation

Claims

1. A tablet (20, 120, 220, 320, 420), in particular a window tablet, comprising: - a tablet housing (22, 122, 222, 422), and - a tablet core (26, 126, 226, 326, 426) rotatably assembled within the tablet housing (22, 122, 222, 422). The tablet further comprises: - The tablet core (26, 126, 226, 326, 426) is formed at a first end (38, 138, 238) accessible from the front side (28, 128, 228) of the tablet (20, 120, 220, 320, 420) for attaching a key (2, 102, 202, 302, 402), in particular a socket key, so as to transmit torque. - The tablet (20, 120, 220, 320, 420) has preventing means (52, 152, 252, 352, 452) for preventing rotation of the tablet core (26, 126, 226, 326, 426) within the tablet housing (22, 122, 222, 422) between an open position and a closed position when the key (2, 102, 202, 302, 402) is removed. In the tablet (20, 120, 220, 320, 420): - The preventing means (52, 152, 252, 352, 452) is configured such that when a key (2, 102, 202, 302, 402), in particular a socket key, having a predetermined magnet arrangement (12, 112, 212, 312, 412) is assembled to the first end (38, 138, 238) of the tablet core (26, 126, 226, 326, 426), rotation of the tablet core (26, 126, 226, 326, 426) within the tablet housing (22, 122, 222, 422) between the open position and the closed position is allowed.

2. The tablet core (26, 126, 226, 326, 426) has a tablet-side contour portion (40, 140, 240, 340, 440), in particular a polygonal contour portion, at the first end (38, 138, 238) for attaching a key (2, 102, 202, 302, 402), in particular a polygonal key, so as to transmit torque. The tablet according to claim 1, characterized in that.

3. The tablet according to claim 1 or 2, characterized in that each of the predetermined magnet arrangement parts (12, 112, 212, 312, 412) includes a predetermined number of magnets (14, 114, 214, 215, 314, 414) having predetermined positions.

4. The tablet according to any one of claims 1 to 3, characterized in that each of the predetermined magnet arrangement parts (12, 112, 212, 312, 412) includes a predetermined number of magnets (14, 114, 214, 215, 314, 414) having predetermined positions and a predetermined magnetic pole orientation.

5. The tablet according to any one of claims 1 to 4, characterized in that the prevention means (52, 152, 252, 352) includes a prevention element (54, 154, 254, 255, 354, 454), and the prevention element (54, 154, 254, 255, 354, 454) is assembled so as to be displaceable between a prevention position where the prevention element (54, 154, 254, 255, 354, 454) prevents rotation of the tablet core (26, 126, 226, 326, 426) within the tablet housing (22, 122, 222, 422) between the open position and the closed position, and a permission position where the prevention element (54, 154, 254, 255, 354, 454) permits rotation of the tablet core (26, 126, 226, 326, 426) within the tablet housing (22, 122, 222, 422) between the open position and the closed position.

6. The tablet according to claim 5, characterized in that the tablet core (26, 126, 226, 326, 426) and / or the tablet housing (22, 122, 222, 422) has a housing part (56, 156, 256, 257, 356, 467) in which the prevention element (54, 154, 254, 255, 354, 454) is assembled so as to be displaceable.

7. The anti - tampering means comprises a plurality of anti - tampering elements, which are assembled in respective receiving portions provided in the tablet housing and / or the tablet core. The receiving portions are arranged so as to surround the axis of rotation of the tablet core. The anti - tampering elements are engaged in respective assigned recesses provided in the tablet core and / or the tablet housing at the anti - tampering position. Preferably, at least two, particularly all, of the receiving portions arranged to surround the axis of rotation of the tablet core and / or the assigned recesses have different distances from the axis of rotation of the tablet core. The tablet according to claim 5 or 6, characterized in that.

8. The tablet (20, 120, 220, 320, 420) has a retaining element (62, 162, 262, 263, 362, 462), which, when the key (2, 102, 202, 302, 402) is removed, holds the anti - tampering element (54, 154, 254, 255, 354, 454) in the closed position, in particular by a magnetic interaction between the retaining element (62, 162, 262, 263, 362, 462) and the anti - tampering element (54, 154, 254, 255, 354, 454). The tablet according to any one of claims 5 to 7, characterized in that.

9. The anti - tampering element (54, 154, 254, 255, 354, 454) is moved to the allowable position when a key (2, 102, 202, 302, 402) having the predetermined magnet arrangement portion (12, 112, 212, 312, 412) is attached to the first end (38, 138, 238) of the tablet core (26, 126, 226, 326, 426), that is, it is configured to be moved to the allowable position by a magnetic interaction, in particular magnetic repulsion, between the anti - tampering element (54, 154, 254, 255, 354, 454) and the magnet arrangement portion (12, 112, 212, 312, 412). The tablet according to any one of claims 5 to 8, characterized in that.

10. The anti - tampering element (54, 154, 254, 255, 354, 454) is a magnet or comprises a magnet. The tablet according to any one of claims 5 to 8, characterized in that.

11. The tablets (20, 120, 220, 320, 420) have a contact surface arrangement part (68, 168, 269) for contact with the predetermined magnet arrangement part (12, 112, 212, 312, 412), and the prevention means (52, 152, 252, 352, 452) is configured and arranged such that when the predetermined magnet arrangement part (12, 112, 212, 312, 412) is in contact with the contact surface arrangement part (68, 168, 269), the prevention means (52, 152, 252, 352, 452) allows rotation of the tablet core (26, 126, 226, 326, 426) within the tablet housing (22, 122, 222, 422) between the open position and the closed position. The tablet according to any one of claims 1 to 10, characterized in that.

12. The contact surface arrangement part (68, 168, 269) is arranged completely or at least partially separately from the tablet side contour part (40, 140, 240, 340, 440), and is arranged, for example, radially outward or inwardly displaced with respect to the rotation axis (A, B, C, D) of the tablet core (26, 126, 226, 326, 426). The tablet according to claim 11, characterized in that.

13. The contact surface arrangement part (68, 168, 269) is arranged at least partially on the tablet side contour part (40, 140, 240, 340, 440), preferably on the inner surface of the accommodating part of the tablet side contour part (40, 140, 240, 340, 440). The tablet according to claim 11 or 12, characterized in that.

14. The tablet core (26, 126, 226, 326, 426) is formed of a plurality of parts, and has a core part (327, 427) arranged in the inner passage (24, 124, 224, 424) of the tablet housing (22, 122, 222, 422) and a contour part (339, 439) having the tablet side contour part (440), and the core part (327, 427) and the contour part (339, 439) are connected to each other in a non-rotatable relative manner. The tablet according to any one of claims 1 to 13, characterized in that.

15. The tablet housing (22, 122, 222, 422) is formed in the shape of a profile cylinder. The tablet according to any one of claims 1 to 14, characterized in that.

16. A key (2, 102, 202, 302, 402) for a tablet (20, 120, 220, 320, 420) according to any one of claims 1 to 15, preferably a socket key, - comprising a gripping portion (4, 104, 204, 304) and an attachment portion (6, 106, 206, 306, 406), - wherein the attachment portion (6, 106, 206, 306, 406) has a key-side contour portion (8, 108, 208, 308, 408), in particular a polygonal contour portion, for attachment to a tablet core (26, 126, 226, 346, 426) of the tablet (20, 120, 220, 320, 420) so as to transmit torque, In the key (2, 102, 202, 302, 402), - the key (2, 102, 202, 302, 402) is characterized in that the attachment portion (6, 106, 206, 306, 406) has a magnet arrangement portion (12, 112, 212, 312, 412).

17. The key according to claim 16, wherein the magnet arrangement portion (12, 112, 212, 312, 412) comprises one or more magnets (14, 114, 214, 215, 314, 414) arranged at respective positions, preferably at least two magnets (14, 114, 214, 215, 314, 414) having different magnetic pole orientations.

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

19. The key according to any one of claims 16 to 18, wherein the key (2, 102, 202, 302, 402) has a wall thickness of at least 4 mm.

20. A tablet system (80, 180, 280, 380, 480), in particular a window tablet system, - comprising a tablet (20, 120, 220, 320, 420) according to any one of claims 1 to 15, - and a key (2, 102, 202, 302, 402) according to any one of claims 16 to 19, which matches the tablet (20, 120, 220, 320, 320, 420). A tablet system (80, 180, 280, 380, 480) comprising the same.

Images