MAGNETIC-MECHANICAL LOCKING DEVICE

Description

[0001] The invention relates to a locking device according to the preamble of claim 1.

[0002] Such a locking device serves to connect two assemblies together, for example as a closure for bags, garments, shoes or helmets, to create a plug connection for electrical or electronic applications or as a coupling for straps or ropes, but also to connect components and accessories to higher-level assemblies, for example in or on vehicles (for example in motor vehicles, aircraft or ships or boats), on suitcases or bags or the like.

[0003] Such a locking device comprises a first locking part, which includes a base element and at least one locking element movable relative to the base element, with a positive locking section arranged thereon. A second locking part, in contrast, comprises an engagement element with an engagement section formed thereon. The first locking part and the second locking part are separated from each other in an open position of the locking device and can be brought together along a closing direction to close the locking device. The positive locking section of the at least one locking element can be brought into engagement with the engagement section of the engagement element in an engagement direction substantially transverse to the closing direction, so that in a closed position the first locking part and the second locking part are held together along the closing direction.

[0004] Due to the operative connection between the locking element of the first locking part and the engagement element of the second locking part, the locking parts are fixed relative to each other in the closed position of the locking device, so that assemblies assigned to the locking parts are connected to each other via the locking parts. By actuating at least one locking element, the locking parts can be released from each other, so that the assemblies can be separated.

[0005] With such a locking device, there is a fundamental need for a firm hold in the closed position, but with easy handling for closing and also for opening the locking device.

[0006] In a connection design known from WO 2008 / 006357 A2, a spring-loaded locking element is arranged on one locking module and a (rigid) locking piece on another locking module. In the closed position, the spring-loaded locking element and the locking piece engage with each other, holding the locking modules together. By moving the locking modules relative to each other, the connection design can be opened, allowing the locking modules to be separated. Magnetic means assist the assembly process by magnetically attracting the locking modules towards each other, thus establishing the engagement between the locking modules almost entirely automatically.

[0007] From US patent 8,555,470, a locking device in the form of a carabiner is known in which a locking piece of the carabiner is magnetically coupled in a closed position.

[0008] In a locking device known from EP 2 959 174 B1, two locking elements are pivotably arranged on a base element. The locking elements are mechanically pre-tensioned by a spring towards a closed position. When a locking element is engaged, the locking elements are forced apart by the engagement of the locking element on ramps of the locking elements, with magnetic assistance in this engagement.

[0009] US Patent 2016 / 0037879 A1 discloses a clasp according to the preamble of claim 1, for a wristwatch, wherein a first clasp part has sliders with projections formed thereon for locking with a second clasp part. The sliders are held magnetically in an open position of the clasp in a position corresponding to a locked position.

[0010] The object of the present invention is to provide a locking device that enables a secure connection with easy operation for both closing and opening the locking device.

[0011] This problem is solved by an object with the features of claim 1. Accordingly, the locking device has a first magnetic element arranged on the at least one locking element of the first locking part and a second magnetic element arranged on the engagement element of the second locking part. In the open position, the at least one locking element of the first locking part assumes a first position relative to the base element. When the locking device is closed, the first magnetic element and the second magnetic element attract each other magnetically, such that the at least one locking element with its positive locking section is moved in the engagement direction from its first position relative to the base element in order to bring the positive locking section into operative contact with the engagement section of the engagement element.

[0012] In one embodiment, at least one locking element of the first locking part is subjected to a force in the open position such that it assumes the first position relative to the base element. Thus, the at least one locking element is biased towards the first position by a force and is thereby held in that position when the locking device is open.

[0013] When the locking device is open, at least one locking element of the first locking part is in a first position that corresponds to a position of the locking element relative to the base element of the first locking part in which the engagement of the locking element with the engagement section of the engagement element of the second locking part is released. For example, by applying force to the locking element in the direction of this first position, or—additionally or alternatively—for example, by providing a locking element (as will be explained below), the locking element is thus held in the open position, making it easy and convenient for a user to close the locking device.

[0014] When the locking device is closed, the first magnetic element on at least one locking element and the second magnetic element on the second locking element attract each other. This creates a magnetic attraction between the locking elements, which magnetically assists their alignment. Furthermore, the magnetic interaction between the first magnetic element on the locking element and the second magnetic element on the second locking element causes at least one locking element to move from its initial position and engage with the engagement section of the other locking element.For this purpose, the magnetic elements are dimensioned, for example, such that the magnetic attraction between them exceeds the force exerted on the locking element in the direction of the first position, at least when the magnetic elements have been brought sufficiently close to each other, so that the functional connection between the locking element and the engagement element is established (automatically). Because the magnetic interaction between the magnetic elements is particularly strong in the (relative) near field, the connection between the locking element and the engagement element is only established when the locking parts have been brought sufficiently close to each other so that the engagement between the locking element and the engagement section of the engagement element can be reliably established.

[0015] In the closed position, at least one locking element is held in engagement with the engagement element by the magnetic interaction between the first magnetic element on the locking element and the second magnetic element on the second locking part, so that the locking parts are connected to each other and thus held securely together in the closed position.

[0016] Force can be applied to at least one locking element of the first locking part in the open position, particularly due to the magnetic effect of the first magnetic element. Thus, the first magnetic element of the locking element can magnetically interact with another magnetic element of the first locking part, so that, due to the magnetic interaction, the locking element is held in the first position when the locking device is open.When the locking device is closed and thus the second locking part is brought close to the first locking part, the magnetic attraction between the first magnetic element of the locking element and the second magnetic element of the second locking part exceeds the force acting on at least one locking element in the direction of the first position, so that at least one locking element is moved out of the first position and brought into engagement with the engagement section of the engagement element.

[0017] Additionally or alternatively, force can also be applied via other preload elements, for example a mechanical spring element.

[0018] If, for example, the first locking part has two locking elements that interact in the manner of pliers and can each be engaged with the engagement section of the engagement element, the force can be applied, for example, by first magnetic elements arranged on the locking elements, for example, by magnetic repulsion between these first magnetic elements.

[0019] In one embodiment, the first locking element has a locking element which, in the open position, engages the at least one locking element with a locking section to hold the at least one locking element in the first position. Such a locking element can, for example, be designed as an elastically resilient element, such as a rubber element or the like. The locking element prevents the locking element from moving out of the first position when the locking device is open, as it is locked in this position by the locking element. If, for example, two locking elements are provided on the first locking element, the locking element with its locking section can be positioned between the locking elements, preventing them from approaching each other.

[0020] In one embodiment, the locking element has a release section that projects into an area into which the second locking part is inserted when the locking parts are brought together to close the locking device. The release section is designed to interact with the second locking part when the locking device is closed, thereby moving the locking element out of its locked position and releasing at least one locking element.

[0021] Alternatively, the locking element can also be moved magnetically, for example by the locking element or another component arranged on the first locking part interacting magnetically with the second locking part, thereby adjusting the locking element so that when the locking parts are brought together, the locking element is moved out of its locked position by magnetic interaction.

[0022] Such a locking element ensures that the functional connection between at least one locking element of the first locking part and the engagement section of the engagement element of the second locking part is only established when the locking parts are (almost) completely and correctly aligned, thus reliably establishing the locking mechanism between them. Because the locking element is only released mechanically through interaction with the second locking part, incorrect locking caused by premature movement of at least one locking element can be prevented.

[0023] When using such a locking element, it may be unnecessary to apply (additional) force in the direction of the first position. In such a design, a locking device generally comprises a first locking part, which has a base element and at least one locking element movable relative to the base element with a positive locking section arranged thereon, and a second locking part, which has an engagement element with an engagement section formed thereon. The first locking part and the second locking part are separated from each other in an open position of the locking device and can be attached to each other along a closing direction to close the locking device.The form-fitting section of at least one locking element can be brought into engagement with the engagement section of the engagement element in an engagement direction essentially transverse to the closing direction, so that in a closed position the first locking part and the second locking part are held together along the closing direction.A first magnetic element is arranged on the first locking part, and a second magnetic element is arranged on the engagement element of the second locking part, wherein the first locking part has a locking element which, in the open position, acts with a locking section on the at least one locking element to hold the at least one locking element in a first position relative to the base element, wherein the second locking part is configured to act (directly or indirectly) on the locking element when closing in order to release the at least one locking element, so that the at least one locking element is moved with the positive locking section in the engagement direction from the first position relative to the base element in order to bring the positive locking section into engagement with the engagement section of the engagement element.

[0024] If the locking device needs to be reopened, at least one locking element can be actuated to disengage it from the engagement element, overcoming the magnetic attraction between the first and second magnetic elements. Once the connection between the at least one locking element and the engagement section of the engagement element is broken, the locking parts can be separated. Because opening also moves the first magnetic element on the locking element towards the second magnetic element on the engagement element, thus weakening (or even reversing) the magnetic attraction between the elements, opening can be accomplished easily and conveniently.

[0025] Actuating at least one locking element can, for example, be done manually by a user who grasps an actuating section of the locking element and moves it. However, actuating the locking element can also be achieved, for example, via an actuating mechanism (e.g., using an actuating element in the form of a lever or a push button) with a linkage, pull cords or cables, a power transmission via a gearbox or force-redirecting ramps, an eccentric element, or the like.

[0026] Additionally or alternatively, at least one locking element can be actuated magnetically, for example by making the second magnetic element of the second locking part reversible. This can be achieved, for instance, by mechanically rotating or shifting the second magnetic element on the second locking part so that, instead of an opposite pole, a pole of the same polarity is brought into opposition with the first magnetic element of the locking element of the first locking part, thus reversing magnetic attraction into magnetic repulsion. This allows the locking element to be magnetically disengaged from the engagement section of the engagement element.

[0027] According to the invention, at least one locking element is pivotable about a pivot axis relative to the base element. The pivot axis can extend along the closing direction, perpendicular to the closing direction, or at an oblique angle to the closing direction. The pivot axis is spaced apart from the engagement section of the engagement element of the second locking part such that the at least one locking element of the first locking part can be brought into engagement with the engagement section of the engagement element transversely, for example, at least approximately perpendicularly or along a circular path defined by an associated pivot axis.

[0028] For pivotable mounting, at least one locking element can be coupled to the base element via an axle element, so that at least one locking element can be rotated around the axle element to the base element.

[0029] Alternatively, though not according to the invention, the at least one locking element can be pivotable relative to the base element. For example, the locking element can be movable along a straight or curved path relative to the base element. In the first position, the locking element is offset outwards transversely to the closing direction. When the locking device is closed, the at least one locking element is brought into operative contact with the engagement section of the engagement element along the direction of engagement transversely to the closing direction, so that the locking parts are connected to each other and held together in the closed position.

[0030] In one embodiment, the at least one locking element has a claw section that forms a positive-locking section for positive engagement behind the engagement section. The claw section can, for example, be shaped like a half-shell, with the positive-locking section extending, for example, along a circular arc around the closing direction. The positive-locking section is preferably adapted to the shape of the engagement element of the second locking part, which is, for example, rotationally symmetrical about the closing direction. In a further embodiment, the positive-locking section can also be in the form of a pin that forms a positive-locking connection with the engagement section receiving the pin.

[0031] The positive locking section is, for example, axially offset from the first magnetic element arranged on the at least one locking element. For instance, the first magnetic element can be arranged on a wall section of the claw section that is axially spaced from the positive locking section and extends perpendicular to the closing direction, so that when the locking device closes, there is a magnetic attraction between the first magnetic element on the locking element and the second magnetic element on the engagement element both along the closing direction and along the engagement direction perpendicular to the closing direction, thus attracting the locking parts towards each other and bringing the locking element and the engagement element into engagement with each other.

[0032] The first magnetic element of at least one locking element and the positive locking section can, for example, be rigidly connected to each other. Alternatively, the positive locking section and the first magnetic element can also be elastically movable relative to each other, which can, for example, make it possible to create a backlash-free connection between the locking parts and to compensate for tolerances in the connection.

[0033] The base element can, for example, be realized by a housing element of the first locking part, to which at least one locking element is adjustable. However, the base element can also be realized by another (essentially identical in construction, but, for example, a mirror image) locking element, so that locking elements are adjustable relative to each other and, for example, mounted against each other like pliers, without an additional housing element.

[0034] In one embodiment, the first locking part has two locking elements and two first magnetic elements, each arranged on one of the locking elements. The locking elements can each be engaged with the engagement element of the second locking part, wherein the locking elements are movable in opposite directions to each other and can thus be engaged with the engagement section of the engagement element of the second locking part from different sides.

[0035] The two locking elements can, for example, each be pivotably arranged on a base element in the form of a housing element of the first locking part. Alternatively, the locking elements can be movably arranged next to each other.

[0036] The two locking elements can, for example, in the closed position, engage the engagement element between them in such a way that one locking element rests on one side of the engagement element and the other locking element rests on the other side. In the closed position, the locking elements thus encompass the engagement element, creating a secure and robust connection between the locking components.

[0037] For example, the locking elements can each have a claw section with a circular arc-shaped form-locking section, so that the locking elements encompass the engagement element by an angle (measured around the closing direction) greater than 180°, preferably greater than 270°, and more preferably greater than 315°.

[0038] In one embodiment, the locking elements are positively coupled to each other via a coupling device for synchronous movement. This means that the locking elements cannot move independently of each other, for example, pivoting; rather, a movement of one locking element always results in a movement of the other. The locking elements can therefore only move synchronously with each other, whereby the movement of the locking elements need not be uniform, but can be, for example, a movement of one locking element converted into a movement of the other in a geared or reduced manner.

[0039] If, for example, the locking elements are each pivotably mounted on a base element of the first locking part, the positive coupling can ensure that pivoting one locking element always coincides with pivoting the other locking element, preferably pivoting in opposite directions to each other. This allows the locking elements to engage synchronously with the engagement element of the second locking part from different sides when the locking device is closed, and similarly, to be moved synchronously out of engagement from the engagement element when the locking device is opened.

[0040] Such a positive coupling can be mechanically manufactured. For example, the locking elements can each have teeth, whereby the meshing of the teeth allows the locking elements to move only in relation to each other. Alternatively, a positive coupling can also be achieved via a linkage, a disc coupling, a belt coupling, or another coupling device.

[0041] In one embodiment, the locking elements are subjected to force in the open position by the repulsive effect of the first magnetic elements relative to each other. Each locking element preferably has a first magnetic element, wherein the first magnetic elements are, for example, magnetically repulsive to each other, and thus the locking elements are pushed away from each other by the first magnetic elements in the open position of the locking device. This can be achieved by having the first magnetic elements pointing towards each other with like poles or by having their magnetization direction aligned vertically with the direction of engagement.When the locking parts are brought close together, the magnetic attraction between the first magnetic elements of the locking elements of the first locking part and the second magnetic element of the second locking part exceeds the magnetic repulsion between the first magnetic elements, so that the locking elements are pulled towards each other, for example with their claw section, and thus the engagement between the locking elements and the engagement element of the second locking part is established.

[0042] In principle, the magnetic elements of the first locking part and the second locking part can be made of permanent magnets, electromagnets or passive magnetic armatures, for example made of a ferromagnetic material.

[0043] If, for example, the first locking component has only one locking element, the first magnetic element can be a permanent magnet or a magnetic armature. In the first case, the second magnetic element of the second locking component is designed as a permanent magnet or a magnetic armature; in the second case, it is a permanent magnet.

[0044] If the first locking component has two locking elements that can move relative to each other, then each locking element can, for example, have a first magnetic element in the form of a permanent magnet. In this case, the second magnetic element can also be a permanent magnet or, alternatively, a magnetic armature.

[0045] It is also conceivable that, for example, one first magnetic element is a permanent magnet and the other first magnetic element is a magnetic armature, with the force applied between the locking elements of the first locking part being effected, for example, by a mechanical preload, such as a spring element. In this case, the second magnetic element can be a permanent magnet or a magnetic armature.

[0046] It is also conceivable that the second magnetic element is a permanent magnet, while the first magnetic elements of the locking elements of the first locking part are each implemented by a magnetic armature. In this case as well, the force applied between the locking elements of the first locking part is achieved, for example, by a mechanical preload, such as a spring element.

[0047] In one embodiment, the first locking element has a preloading element designed to bias at least one locking element in the direction of engagement. Such a preloading element can, for example, be a mechanical spring, whereby the first position in which the at least one locking element is located when the locking device is open can be set in a defined manner by such a preloading element. The preloading element can be tensioned more strongly, for example, the further the locking element is moved against the direction of engagement relative to the base element. If a force applied to the locking element weakens against the direction of engagement due to a magnetic effect, the first position corresponds to the position of the locking element in which the force of the preloading element and the magnetic force, for example, are in equilibrium.

[0048] In one embodiment, the first locking part has at least one first electrical contact and the second locking part has at least one second electrical contact. The at least one first electrical contact and the at least one second electrical contact are electrically connected to each other in the closed position of the locking device. The at least one electrical contact of the first locking part can, for example, be arranged on the at least one locking element. The at least one second electrical contact of the second locking part, on the other hand, can, for example, be arranged on the engagement element.

[0049] For example, each locking part can have multiple contact elements, so that a multi-pole electrical connection can be established via the locking device.

[0050] The establishment of the electrical contact and the mechanical connection can, for example, be carried out in a staggered manner. It can be advantageous here that, when closing, the mechanical connection is established first, followed by the electrical contact between the contact elements. This can, in particular, prevent the contact elements of the locking parts from rubbing against each other during closing and opening. Instead, when closing, the electrical contact in the direction of engagement (perpendicular to the closing direction) only occurs after the mechanical connection has already been established, and when opening, the electrical contact is first broken (opposite the direction of engagement) before the mechanical connection is released.

[0051] In one embodiment, the locking device includes an indicator for showing its position. Such an indicator can, in particular, show whether the locking device is in the open or closed position. This indicator can be implemented, for example, by a colored marking, such as in a window of the base element of the first locking part, with the colored marking indicating the position of at least one locking element relative to the base element. In another embodiment, such an indicator can be implemented, for example, by a pin element that assumes a first position relative to the base element in the open position and a second position relative to the base element in the closed position, thus clearly indicating the position of the locking device.

[0052] A locking device of the type described can be used, for example, to create a plug connection for electrical or electronic devices.

[0053] Furthermore, such a closure device can be used for bags, garments, shoes or other textile assemblies.

[0054] The locking device can also be used as a closure for a suitcase or as a safety fastener, for example, for a life jacket or similar item. For instance, the locking device can be used on or for vehicles or personal protective equipment.

[0055] The locking device can also be used as a coupling, for example to connect several containers, such as several suitcases or bags, to each other.

[0056] The locking device can also be used to couple electrical and electronic devices together, for example for signal transmission or power supply.

[0057] The locking device can also provide a heavy-duty locking mechanism, which can be used, for example, to connect a vehicle to a trailer or the like.

[0058] The locking device can also be used, for example, as a rope or strap fastener.

[0059] The underlying concept of the invention will be explained in more detail below with reference to the exemplary embodiments shown in the figures. The figures show: Fig. 1A A perspective view of an embodiment of a locking device in an open position; Fig. 1B A view of the locking device according to Fig. 1A , in a closed position; Fig. 2 an exploded view of the locking device; Fig. 3A a view of the locking device in the open position; Fig. 3A view of the locking device when closing; Fig. 3C a view of the locking device when closing further; Fig. 3A view of the locking device when closing further; Fig. 3E a view of the locking device in the closed position; Fig. 4A a top view of the locking device in the open position; Fig. 4A side view of the locking device; Fig. 4C a front view of the locking device; Fig. 4A a sectional view along line AA according to Fig. 4A Fig. 5A A top view of the locking device in the closed position; Fig. 5A Side view of the locking device; Fig. 5C A front view of the locking device; Fig. 5A A sectional view along line AA according to Fig. 5A Fig. 6A A view of another embodiment of a locking device, in an open position; Fig. 6A Frontal view of the locking device according to Fig. 6A Fig. 6C A top view of the locking device; Fig. 6 A sectional view along line BB according to Fig. 6C Fig. 7A A view of the locking device in a closed position; Fig. 7B Frontal view of the locking device according to Fig. 7A ; Fig. 7C a top view of the locking device; Fig. 7A sectional view along line AA according to Fig. 7C Fig. 8A a view of yet another embodiment of a locking device, in an open position; Fig. 8Bone top view of the locking device; Fig. 8C a sectional view along line AA according to Fig. 8B ; Fig. 8Your sectional view along line BB according to Fig. 8B ; Fig. 9A a view of the locking device when closed; Fig. 9B legs top view of the locking device; Fig. 9C a sectional view along line AA according to Fig. 9B ; Fig. 9Your sectional view along line BB according to Fig. 9B ; Fig. 10A a view of the locking device during further closing; Fig. 10B top view of the locking device; Fig. 10C a sectional view along line AA according to Fig. 10B ; Fig. 10 Your sectional view along line BB according to Fig. 10B ; Fig. 11A a view of the locking device during further closing; Fig. 11B a top view of the locking device; Fig. 11C a sectional view along line AA according to Fig. 11B ; Fig. 11Your sectional view along line BB according to Fig. 11B ; Fig. 12A a view of the locking device in the closed position; Fig. 12B a top view of the locking device; Fig. 12C a sectional view along line AA according to Fig. 12B ; Fig. 12Your sectional view along line BB according to Fig. 12B ; Fig. 13 an exploded view of the locking device according to Fig. 8A bis 12D Fig. 14A A view of yet another embodiment of a locking device, in an open position; Fig. 14B Top view of the locking device; Fig. 15A A view of the locking device, in a closed position; Fig. 15B Top view of the locking device; Fig. 16A A view of yet another embodiment of a locking device, in an open position; Fig. 16B Top view of the locking device; Fig. 16C A sectional view along line AA according to Fig. 16B ; Fig. 17A a view of the locking device in a closed position; Fig. 17B a top view of the locking device; Fig. 17C a sectional view along line AA according to Fig. 17B Fig. 18A A view of yet another embodiment of a locking device, in an open position; Fig. 18B Top view of the locking device; Fig. 19A A view of the locking device, in a closed position; Fig. 19B Top view of the locking device; Fig. 20A A view of yet another embodiment of a locking device, in an open position; Fig. 20B Top view of the locking device; Fig. 21A A view of the locking device, in a closed position; Fig. 21B Top view of the locking device; Fig. 22A A view of yet another embodiment of a locking device, in an open position; Fig. 22B Top view of the locking device; Fig. 22C A sectional view along line AA according to Fig. 22B ; Fig. 22Your side view of the locking device; Fig. 22EA sectional view along line AA according to Fig. 22D Fig. 23A A view of the locking device with a housing part removed from the first locking part; Fig. 23Legs Top view of the arrangement according to Fig. 23A ; Fig. 24A a view of the locking device in a closed position; Fig. 24B a top view of the locking device; Fig. 24C a sectional view along line AA according to Fig. 24B ; Fig. 24Your side view of the locking device; Fig. 24EA sectional view along line AA according to Fig. 24D Fig. 25A A view of the locking device with a housing part removed from the first locking part; Fig. 25Legs Top view of the arrangement according to Fig. 25A ; Fig. 26A an exploded view of another embodiment of a locking device; Fig. 26A another exploded view of the locking device; and Fig. 27 a schematic view of an electrical contact between locking parts.

[0060] Fig. 1A, 1B until Fig. 5A-5D Figure 1 shows a first embodiment of a locking device 1, which has two locking parts 2, 3 that can be placed next to each other along a closing direction X1 and are mechanically locked together in a closed position, so that assemblies associated with the locking parts 2, 3 are connected to each other via the locking parts 2, 3.

[0061] Referring first to the exploded view according to Fig. 2 The locking element 2 has a base element in the form of a housing element 20, on which two locking elements 21A, 21B are pivotably mounted via axis elements 23A, 23B. The locking elements 21A, 21B each have a claw section 210 in the form of a half-shell, which together serve to create a locking connection with an engagement element 31 of the locking element 3.

[0062] The claw sections 210 each form a positive locking section 211, which extends approximately semicircularly around the closing direction X1 along a circular arc and can be approximated to the engagement element 31 of the locking part 3 with an inner edge section 212. A magnetic element 22A, 22B is arranged in each of the locking elements 21A, 21B on a wall section 213 facing away from the positive locking section 211 and spaced axially along the closing direction X1. The locking elements 21A, 21B are coupled to the axis elements 23A, 23B via a shaft section 214 and pivotably mounted on the housing element 20, so that the locking elements 21A, 21B can pivot relative to the housing element 20 and also relative to each other.

[0063] In the illustrated embodiment, pivot axes D1, D2 defined by the axis elements 23A, 23B are directed along the closing direction X1. The pivot axes D1, D2 are spaced transversely to the closing direction X1 from the engagement element 31 of the locking part 3 (in particular from a rotational symmetry axis of the engagement element 31), so that the claw sections 210 with the form-fitting sections 211 formed thereon can be brought into engagement in a plane directed perpendicular to the closing direction X1 and transversely to the closing direction X1 with an engagement section 310 of the locking part 3 formed on the engagement element 31.

[0064] It should be noted that the pivot axes D1 and D2 can also be arranged in a different configuration or in a different relationship to the closing direction. For example, in another embodiment, it is conceivable that they extend in a plane that is perpendicular to the closing direction or angled to the closing direction.

[0065] In the area of ​​the axle elements 23A, 23B, a coupling device 24A, 24B in the form of a toothed section is formed on each shaft section 214. The locking elements 21A, 21B are positively coupled to each other by the toothed engagement of the toothed sections, so that a pivoting of one locking element 21A, 21B is always accompanied by a synchronous, but oppositely directed pivoting of the other locking element 21B, 21A.

[0066] The locking element 3 has a base body 30 on which the engagement element 31 is arranged. A magnetic element 32 is embedded in the engagement element 31 and serves for magnetic interaction with the magnetic elements 22A, 22B of the locking elements 21A, 21B.

[0067] The magnetic elements 22A, 22B of the locking elements 21A, 21B can be configured as permanent magnets, magnetic armatures, or electromagnets. Likewise, the magnetic element 32 of the locking part 3 can be configured as a permanent magnet or a magnetic armature, wherein at least one of the magnetic elements 22A, 22B, 32 is formed by a permanent magnet or electromagnet.

[0068] In the illustrated embodiment, the magnetic elements 22A, 22B, 32 are each formed, for example, by a permanent magnet. The magnetic elements 22A, 22B of the locking elements 21A, 21B are arranged with the same polarity relative to each other and point, for example, with their like poles towards the engagement element 31 of the locking part 3, as shown in Fig. 2 The diagram shows that there is a magnetic repulsion between magnetic elements 22A and 22B perpendicular to the closing direction X1. Magnetic element 32, on the other hand, has an opposite pole oriented towards the magnetic poles of magnetic elements 22A and 22B, so that there is a magnetic attraction between magnetic elements 22A and 22B on the one hand and magnetic element 32 on the other.

[0069] In the illustrated embodiment, the magnetization directions of the magnetic elements 22A, 22B (corresponding to the direction vector from the north pole N to the south pole S) are aligned and parallel to the closing direction (see Fig. 2 There is therefore a magnetic repulsion between the magnetic elements 22A and 22B perpendicular to the closing direction X1. However, the magnetic elements 22A and 22B can also be oriented with like poles towards each other, so that the magnetization directions of the magnetic elements 22A and 22B are perpendicular to the closing direction X1 and opposite to each other.

[0070] Fig. 3A bis 3E show the locking device 1 when closing. Fig. 4A bis 4D Show views of the closure direction 1 in an open position before closing. Fig. 5A bis 5D Shows views in the closed position after closing.

[0071] When the locking parts 2, 3 are brought together along the closing direction X1 to close the locking device 1, the locking elements 21A, 21B are brought close to the engagement element 31. In the open position before closing, as shown in Fig. 3A as well as Fig. 4A bis 4D In this case, the locking elements 21A, 21B are in a first, open position, in which the claw sections 210 are spaced apart from each other opposite to an engagement direction X2 perpendicular to the closing direction X1. In this open position, the locking elements 21A, 21B are held in place in the illustrated embodiment by the magnetically repulsive effects between the magnetic elements 22A, 22B of the locking elements 21A, 21B.

[0072] As the locking elements 21A, 21B approach the engagement element 31, the magnetic attraction between the magnetic elements 22A, 22B on the one hand and the magnetic element 32 on the other hand becomes increasingly strong, so that the locking elements 21A, 21B are pulled towards each other against the magnetic repulsion between the magnetic elements 21A, 21B. Once the locking elements 21A, 21B have been brought sufficiently close to the engagement element 31, as occurs during the transition from Fig. 3B towards Fig. 3E As can be seen, the magnetic attraction of the magnetic element 32 on the magnetic elements 22A, 22B exceeds the magnetic repulsion between the magnetic elements 22A, 22B, so that the locking elements 21A, 21B are brought into contact with each other in the engagement direction X2 perpendicular to the closing direction X1, and thereby the positive locking sections 211 on the inside of the claw sections 210 of the locking elements 21A, 21B are in engagement with the engagement section 310 of the engagement element 31, as can be seen from Fig. 3E in conjunction with Fig. 5A bis 5D as is evident.

[0073] The locking parts 2, 3 are thus positively connected to each other in the closed position and are held securely together by the fact that the locking elements 21A, 21B with their claw sections 210 positively engage the engagement element 31 in the area of ​​the engagement section 310.

[0074] In the illustrated embodiment, the positive locking sections 211 are formed as rigid, inwardly projecting projections inside the claw sections 210. The engagement section 310 on the engagement element 31 is formed as a radially projecting, circumferential projection section on the engagement element 31, extending around the closing direction X1.

[0075] Due to the positive coupling via the coupling devices 24A, 24B, the pivoting movement of the locking elements 21A, 21B during closing is always synchronous. The positive locking sections 211 are thus brought into engagement with the engagement section 310 of the engagement element 31 in a synchronous and therefore uniform manner, so that the locking between the locking parts 2, 3 is established securely and reliably.

[0076] At a Fig. 6A-6D and 7A-7D In the illustrated embodiment, the locking element 2 additionally features a locking element 25 in the form of an elastically adjustable element, for example, a spring element, which, in the open position, lies between the locking elements 21A and 21B and thus locks them in the open position. The locking element 25 forms a locking section 250 in the form of a bar extending transversely to the closing direction X1, which holds the locking elements 21A and 21B apart from each other in the open position. The locking element 25 is fixed to the housing element 20 of the locking element 2 via a release section 251, wherein the release section 251 is elastically deformable and thus the locking element 25 can be adjusted to unlock it.

[0077] As can be seen in particular from the sectional view according to Fig. 6D As can be seen, the release section 251 projects into an area inside the claw sections 210, into which the locking part 3 with the engagement element 31 is inserted when the locking device 1 is closed. During closing, the locking part 3 thus interacts with the release section 251 and thereby moves the locking element 25 radially outwards, so that the locking section 150 is moved from a position between the locking elements 21A, 21B, as is the case in the transition from Fig. 6A-6D (representing the open position) towards Fig. 7A-7D (showing the closed position) is evident.

[0078] If the locking element 25 has been moved from its intermediate position between the locking elements 21A, 21B, the locking elements 21A, 21B are pulled towards each other due to the magnetic interaction with the magnetic element 32 of the engagement element 31 and thus enter the locking position in which the locking parts 2, 3 are connected to each other.

[0079] The locking element 25 ensures, in particular, that the locking elements 21A, 21B are only drawn towards each other to engage with the engagement element 31 once the engagement element 31 has been inserted sufficiently far into an opening 200 of the housing element 20, so that the locking connection between the locking elements 21A, 21B and the engagement section 310 of the engagement element 31 can be established securely and reliably. This prevents incorrect locking.

[0080] Otherwise, the exemplary embodiment is according to Fig. 6A-6D and 7A-7D functionally identical to the preceding one based on Fig. 1 bis 5D described embodiment, so reference should also be made to the preceding explanations.

[0081] In the embodiments described above, the locking device 1 can be reopened by a user acting on the locking elements 21A, 21B and, for example, pulling them apart in the opposite direction of engagement X2. This can be done manually or via a suitable actuating mechanism, for example in the form of a linkage, a lever mechanism, an eccentric element, or another mechanism.

[0082] It is also conceivable that, for example, the polarity of the magnetic element 32 is reversed by mechanically rotating the magnetic element 32 in order to open it. Thus, the magnetic element 32 can, for example, be rotatable so that instead of the south pole S (see Fig. 2 ) a north pole N points towards the magnetic elements 22A, 22B of the locking elements 21A, 21B, so that the magnetic attraction is reversed into a magnetic repulsion between the magnetic element 32 and the magnetic elements 22A, 22B. In this way, the locking elements 21A, 21B open magnetically, and the locking mechanism is released.

[0083] At a Fig. 8A-8D until Fig. 13 In the illustrated embodiment, the locking elements 21A, 21B each have an actuating section 215 in the form of a lever section, which is formed at a lever end of the respective locking element 21A, 21B facing away from the respective claw section 210 and can be manually actuated by a user. By acting on the actuating sections 215 in an actuating direction B (see, for example, Fig. 12A und 12B A user can adjust the locking elements 21A, 21B relative to the housing element 20 and to each other such that the claw sections 210 of the locking elements 21A, 21B are separated from each other, thus releasing the engagement element 31 from the closed position so that the locking parts 2, 3 can be separated from each other. By acting on the actuating sections 215, the locking device 1 can thus be opened and removed from the closed position ( Fig. 12A-12D ) into the open position ( Fig. 8A-8D ) are transferred.

[0084] Otherwise, the exemplary embodiment is according to Fig. 8A bis 13 functionally identical to the previously described embodiments, so reference should also be made to the preceding explanations.

[0085] At a Fig. 14A, 14B and 15A, 15B In the illustrated embodiment, an additional preload element 26 in the form of a mechanical spring is arranged between the locking elements 21A, 21B, which serves to effect a mechanical preload between the locking elements 21A, 21B in the engagement direction X2.

[0086] The preload element 26 acts between the actuating sections 215 and is designed as a compression spring. The preload force caused by the preload element 26 increases (at least approximately) linearly with the distance between the claw sections 210 in the direction of engagement X2.

[0087] The preload element 26, in conjunction with the magnetic repulsion between the magnetic elements 22A, 22B, serves to set a defined open position of the locking elements 21A, 21B. In the open position, the locking elements 21A, 21B assume a position relative to each other in which the magnetic repulsion between the magnetic elements 22A, 22B and the (oppositely directed) preload force of the preload element 26 are in equilibrium, such that the repulsive force of the magnetic elements 22A, 22B opposite the direction of engagement X2 and the preload force of the preload element 26 in the direction of entry X2 exactly balance each other.

[0088] Such a preloading element 26 can also be particularly advantageous if a locking element 25, as in the embodiment shown in the illustration, is used. Fig. 6A-6D and 7A-7D , is used. To open, the locking elements 21A, 21B with their claw sections 210 can be moved apart so far that the locking element 25, due to its inherent elasticity, enters the locking position according to Fig. 6A-6D Due to the preloading force of the preloading element 26, the locking elements 21A, 21B then come into a position in contact with the locking element 25, so that the locking device 1 can be reliably closed again when the locking parts 2, 3 are reattached.

[0089] If such a locking element 25 is provided, the magnetic elements 22A, 22B can optionally be designed such that there is no magnetic repulsion between the locking elements 21A, 21B. For example, the magnetic elements 22A, 22B can each be designed with a (passive) magnetic armature, so that the magnetic elements 22A, 22B attract the magnetic element 32 of the locking part 3, but do not interact magnetically with each other, and in particular do not repel each other. In this case, the locking element 25 holds the locking elements 21A, 21B open by preventing them from moving towards each other in the open position of the locking device 1.

[0090] Otherwise, the embodiment corresponds to Fig. 14A, 14B and 15A, 15B according to the exemplary embodiment Fig. 8A bis 13 .

[0091] At a Fig. 16A-16C and 17A-17C In the illustrated embodiment, a locking element 25 acts between the locking elements 21A, 21B in the open position ( Fig. 16A-16C ), to hold the locking elements 21A, 21B in their open position. Analogous to what was previously described using Fig. 6A bis 7D As described, the locking element 25 is unlocked when the locking device 1 is closed, so that the locking elements 21A, 21B are in the closed position ( Fig. 17A-17C ) in turn engage in a locking manner with the engagement element 31 of the locking part 3.

[0092] A guide section 201 on an edge section of the opening 200 in the housing element 20 of the locking part 2, facing away from the locking element 25, provides a guide for the engagement element 31 when the locking parts 2, 3 are joined together, so that the engagement element 31 interacts with the locking element 25 in a defined manner via the engagement section 310.

[0093] Actuating sections 215 on the locking elements 21A, 21B are designed in the illustrated embodiment by rounded button elements that can be pressed towards each other along the actuating direction B.

[0094] At a Fig. 18A, 18B and 19A, 19B In the illustrated embodiment, the housing element 20 is designed as an enclosing housing that surrounds the locking elements 21A, 21B in the area of ​​the axle elements 23A, 23B. Otherwise, the embodiment is functionally identical to the embodiment according to Fig. 8A bis 13 , so reference should also be made to the preceding statements.

[0095] At a Fig. 20A, 20B and 21A, 21B In the illustrated embodiment, the locking elements 21A, 21B are pivotably mounted on a common axis element 23 and thus pivotably arranged relative to one another. An additional base element in the form of a housing element is not required in this case.

[0096] Apart from this, the embodiment is functionally identical to the embodiment described above.

[0097] At a Fig. 22A-22E until Fig. 25A, 25B In the illustrated embodiment, the locking element 2 has a housing element 20 in the form of a housing, which is composed of housing parts 202, 203 and pivotably mounts the locking elements 21A, 21B inside it about axle elements 23A, 23B integrally formed with the housing part 203. Actuating sections 215 are accessible laterally on the housing and can be actuated by a user, in particular to release the locking elements 21A, 21C from the closed position ( Fig. 24A-24E , 25A, 25B ) into the open position ( Fig. 22A-22E , 23A, 23B to transfer.

[0098] In the illustrated embodiment, the locking elements 21A, 21B are formed with claw sections 210, each of which is connected to the shaft section 214 of the associated locking element 21A, 21B via a connecting section 216. In the region of the connecting section 216, the locking element 21A, 21B is elastic, so that the claw section 210 can deflect elastically relative to the shaft section 214 and, in particular, to the magnetic element 22A, 22B, which is rigidly connected to the shaft section 214. Thus, there is elasticity between the claw sections 210 and the magnetic elements 22A, 22B, which can be advantageous for creating a backlash-free connection between the locking elements 21A, 21B and the engagement element 31 of the locking part 3, as can be seen, for example, in the sectional view according to [reference to figure]. Fig. 24C and 24E as is evident.

[0099] Otherwise, the illustrated embodiment is functionally identical, for example, to the embodiment according to Fig. 8A bis 13 , so reference should also be made to the preceding statements.

[0100] At a Fig. 26A , 26B In the illustrated embodiment, the locking elements 21A, 21B have positive locking sections 211 in the form of pins, each of which engages with a corresponding engagement section 310 in the form of an engagement opening on the engagement element 31 of the locking part 3. In a modification of the previously described embodiments, the positive locking sections 211 of the locking elements 21A, 21B are thus not formed by arcuate detent projections, but by inwardly projecting pins which, in the closed position, engage with the engagement sections 310 in the form of the engagement openings on both sides of the engagement element 31 of the locking part 3.

[0101] In the embodiment according to Fig. 26A , 26B The locking elements 21A, 21B are enclosed in a housing element 20 in the form of a housing formed by housing parts 202, 203, 204 and pivotably mounted therein. Actuating sections 215 are, analogous to the embodiment shown, Fig. 22A bis 25B , accessible from the outside and can be operated to pivot the locking elements 21A, 21B, in particular to open the locking direction 1.

[0102] Functionally, the embodiment is as follows Fig. 26A , 26B otherwise identical to the embodiment according to Fig. 8A bis 13 , so reference should be made to the preceding statements.

[0103] The previously described fastening devices 1 can be used to connect two assemblies together, for example as a fastener for bags, for clothing, for shoes, for helmets, for safety equipment or for other assemblies that are to be securely fixed to each other.

[0104] The locking device 1 can also serve to establish an electrical connection. For this purpose, electrical contact elements can be arranged on the locking parts 2, 3, which come into electrical contact with each other when the locking device 1 is closed, so that an electrical connection is established between one or more electrical conductors via the locking parts 2, 3.

[0105] For example, such contacts can be arranged on the locking elements 21A, 21B and the engagement element 31. Thus, in the embodiments described above, electrical contact elements 27 can be arranged on the claw section 210 of one or both locking elements 21A, 21B. These contact elements are connected to electrical leads 270 and, in the closed position of the locking device 1, electrically contact contact elements 33 on the engagement element 31 of the locking part 3, as shown schematically in Fig. 27 The contact elements 27 can, for example, extend in a circular arc on the inside of the edge section 212 of the respective positive-locking section 211. In contrast, the contact elements 33 on the engagement element 31 can, for example, be formed as fully enclosed contact rings on the engagement element 31. Leads 270, 330 can be embedded in the respective element or attached to a surface.

[0106] Other arrangements of contact elements are also conceivable and possible.

[0107] For example, it is conceivable that the locking elements 21A, 21B and also the engagement element 31 are electrically conductive and thus an electrical contact is established directly via the locking elements 21A, 21B and the engagement element 31.

[0108] The underlying idea of ​​the invention is not limited to the embodiments described above, but can also be realized in a completely different way.

[0109] Although the previously described embodiments each provide two locking elements, this is not a limitation. In principle, only a single locking element is possible, designed to create a locking connection with an associated engagement element.

[0110] According to the invention, at least one locking element is pivotably mounted on an associated base element, for example in the form of a housing element. Bezugszeichenliste

[0111] 1 Locking device 2 Locking part 20 Housing element 200 Opening 201 Guide section 202-204 Housing part 21A, 21B Locking element 210 Claw section 211 Positive locking section 212 Edge section 213 Wall section 214 Shaft section 215 Actuating section 216 Connecting section 22A, 22B Magnet element 23, 23A, 23B Axle element 24A, 24B Coupling device 25 Locking element 250 Locking section 251 Release section 26 Preload element 27 Electrical contact element 270 Supply line 3 Locking part 30 Base body 31 Engagement element 310 Engagement section 32 Magnet element 33 Electrical contact element 330 Supply line B Actuating direction D1, D2 Swivel axis N, S Magnetic pole O Opening direction X1 Closing direction X2 Engagement direction

Claims

1. A closure device (1), comprising a first closure part (2), which includes a base element and at least one closure element (21A, 21B) movable relative to the base element (20) with a form-fitting portion (211) arranged thereon, and a second closure part (3), which includes an engagement element (31) with an engagement portion (310) formed thereon, wherein in an open position of the closure device (1) the first closure part (2) and the second closure part (3) are separated from each other and can be attached to each other along a closing direction (X1) for closing the closure device (1), and wherein the form-fitting portion (211) of the at least one closure element (21A, 21B) can be brought into engagement with the engagement portion (310) of the engagement element (31) in an engagement direction (X2) substantially transversely to the closing direction (X1), so that in a closed position the first closure part (2) and the second closure part (3) are held at each other along the closing direction (X1), further comprising a first magnetic element (22A, 22B) arranged on the at least one closure element (21A, 21B) of the first closure part (2) and a second magnetic element (32) arranged on the engagement element (31) of the second closure part (3), wherein in the open position the at least one closure element (21A, 21B) of the first closure part (2) takes a first position relative to the base element (20), and on closing the first magnetic element (22A, 22B) and the second magnetic element (32) cooperate in a magnetically attracting way so that the at least one closure element (21A, 21B) is moved with the form-fitting portion (211) in the engagement direction (X2) out of the first position relative to the base element (20) in order to bring the form-fitting portion (211) into engagement with the engagement portion (310) of the engagement element (31), characterized in that the at least one closure element (21A, 21B) can be pivoted relative to the base element (20) about a pivot axis (D1, D2).

2. The closure device (1) according to claim 1, characterized in that a force is applied onto the at least one closure element (21A, 21B) of the first closure part (2) in the open position such that the at least one closure element (21A, 21B) takes the first position relative to the base element (20).

3. The closure device (1) according to claim 1 or 2, characterized in that in the open position a force is applied onto the at least one closure element (21A, 21B) of the first closure part (2) by magnetic action of the first magnetic element (22A, 22B).

4. The closure device (1) according to any of the preceding claims, characterized in that the at least one closure element (21A, 21B) can be moved relative to the base element (20) against the engagement direction (X2) in order to eliminate the operative connection with the engagement portion (310).

5. The closure device (1) according to any of the preceding claims, characterized in that the pivot axis (D1, D2) extends along the closing direction (X1), perpendicularly to the closing direction (X1) or at an oblique angle to the closing direction (X1).

6. The closure device (1) according to any of the preceding claims, characterized in that the at least one closure element (21A, 21B) includes a claw portion (210) that forms a form-fitting portion (211) for positively engaging behind the engagement portion (310).

7. The closure device (1) according to claim 6, characterized in that the form-fitting portion (211) extends along a circular arc around the closing direction (X).

8. The closure device (1) according to claim 6 or 7, characterized in that the form-fitting portion (211) is elastically connected to the associated, first magnetic element (22A, 22B).

9. The closure device (1) according to any of the preceding claims, characterized in that the base element is realized by a housing element (20).

10. The closure device (1) according to any of the preceding claims, characterized in that the first closure part (2) includes two closure elements (21A, 21B) and two first magnetic elements (22A, 22B) each arranged on one of the closure elements (21A, 21B).

11. The closure device (1) according to claim 10, characterized in that the closure elements (21A, 21B) are forcibly coupled to each other via a coupling device (24A, 24B) for joint movement.

12. The closure device (1) according to any of claims 10 or 11, characterized in that in the open position a force is applied onto the closure elements (21A, 21B) due to the repelling effect of the first magnetic elements (22A, 22B) relative to each other and on closing said closure elements are drawn towards each other due to magnetic interaction with the second magnetic element (32).

13. The closure device (1) according to any of the preceding claims, characterized in that the first closure part (2) includes a pretensioning element (26) which is configured to load the at least one closure element (21A, 21B) in the engagement direction (X2), in particular wherein the pretensioning element (26) is formed by a mechanical spring.

14. The closure device (1) according to any of the preceding claims, characterized in that the first closure part (2) includes at least one first electrical contact (27) and the second closure part (3) includes at least one second electrical contact (33), wherein in the closed position the at least one first electrical contact (27) and the at least one second electrical contact (33) are electrically contacted with each other, in particular wherein the at least one first electrical contact (27) is arranged on the at least one closure element (21A, 21B).