Closure device having an adjustable connection element

Abstract

A closure device (1) comprises: a first closure part (2) which has a first body (20), an engagement apparatus (21) arranged on the first body (20) and a first magnet apparatus (22A, 22B); and a second closure part (3) which has a second body (30), a connection element (34A, 34B) arranged to move on the second body (30) and a second magnet arrangement (32A, 32B) arranged on the connection element (34A, 34B). To close the closure device (1), the first closure part (2) and the second closure part (3) can be moved towards one another, and in a closed position the connection element (34A, 34B) is in engagement with the engagement apparatus (21) in order to hold the first closure part (2) and the second closure part (3) together. For transition from an initial position to a functional position, the connection element (34A, 34B) can be moved relative to the second body (30) at least on part of an adjustment path along an adjustment direction (V, V') which differs from a linear direction (X), wherein in the closed position, as a result of the engagement between the connection element (34A, 34B) and the engagement apparatus (21), a movement of the connection element (34A, 34B) relative to the second body (30) along the adjustment direction (V, V') is prevented.

Description

[0001] Locking device with an adjustable connecting element

[0002] Description

[0003] The invention relates to a closure device according to the preamble of claim 1.

[0004] Such a closure device comprises a first closure part having a first body, an engagement device arranged on the first body, and a first magnetic device, and a second closure part having a second body, a connecting element movably arranged on the second body, and a second magnetic device arranged on the connecting element. To close the closure device, the first closure part and the second closure part can be placed against one another. In a closed position, the connecting element engages with the engagement device to hold the first closure part and the second closure part against one another. To open the closure device, the engagement between the connecting element and the engagement device can be released, so that the first closure part and the second closure part can be separated from one another.

[0005] In the closure device, the connecting element on the second body of the second closure part is adjustable along an adjustment path between an initial position, in which the connecting element is at least partially received in the body, and a functional position. In the functional position, the connecting element protrudes relative to the second body, viewed along a linear direction, so that the connecting element can be brought into engagement with the engagement device of the first closure part. The first magnetic device and the second magnetic device are designed to interact in a magnetically attractive manner when the first closure part and the second closure part approach one another, in order to transfer the connecting element from the initial position to the functional position.

[0006] In a closure device known from DE 10 2010 044 198 A1, spring locking elements are arranged on a closure part, which, in a closed position, engage with engagement elements of another closure part. The engagement elements are accommodated in a housing of the other closure part in an initial position, so that in the initial position the engagement elements do not protrude outward from the housing or protrude only slightly. From the initial position, the engagement elements can be adjusted relative to the housing, so that in a functional position the engagement elements protrude from the housing and can be engaged with the spring locking elements to connect the closure parts.

[0007] A locking device known from US 6,659,516 for locking a laptop computer in a closed position has a hook element which is received in an initial position in an associated housing and can be pivoted out of the housing for locking.

[0008] In a locking device, such as that known from DE 10 2010 044 198 A1, engagement elements on one locking part are extended when locking parts approach each other, in order to engage with spring locking elements on another locking part in a closed position and to establish a connection between the locking parts in the closed position. The engagement elements are pre-tensioned, for example, spring-elastically, relative to a body of the associated locking part in the direction of the initial position, which results in the locking parts being in pre-tensioned contact with each other in the closed position.

[0009] For example, when using a closure device in a vehicle, for example on a padded surface, it may be desirable for the closure parts to not be in contact with each other over a large area in a closed position, in order to enable a reliable connection between the closure parts even on irregularly shaped surfaces, for example, on padded surfaces. The object of the present invention is to provide a closure device that can be used variably and enables a reliable connection of closure parts, even on irregularly shaped surfaces, for example.

[0010] This object is achieved by an article having the features of claim 1.

[0011] Accordingly, the connecting element is movable relative to the second body at least over a part of the adjustment path along an adjustment direction different from the linear direction for transferring from the initial position to the functional position, wherein in the closed position a movement of the connecting element along the adjustment direction relative to the second body is blocked due to the engagement of the connecting element with the engagement device.

[0012] To close the closure device, the closure parts of the closure device are brought closer together, for example, along a closing direction. Due to the magnetic interaction of the magnetic devices on the side of the first closure part and the connecting element of the second closure part, when the closure parts approach each other, the connecting element of the second closure part is moved from the starting position to the functional position. While the connecting element is fully or partially enclosed in the body of the associated second closure part in the starting position, the connecting element is adjusted relative to the body of the second closure part in the functional position such that the connecting element protrudes from the body in a linear direction and can thus be brought into engagement with the engagement device on the first closure part.

[0013] The linear direction may, for example, approximately correspond to a closing direction along which the first closure part and the second closure part can be brought closer to one another to close the closure device.

[0014] The closure parts can, for example, be attachable to one another exclusively along the closing direction (at least over the final part of the closing path). In another embodiment, the closure parts can also be attached to one another along the closing direction and also along other directions, for example transversely to the closing direction, in order to close the closure device, so that the ability of the closure parts to approach one another is not limited to the closing direction. However, the adjustment of the connecting element from the initial position to the functional position when closing the closure device does not occur (exclusively) linearly along the linear direction, but at least over part of the adjustment path in a guided manner along an adjustment direction that differs from the linear direction.The adjustment movement of the connecting element for transferring it from the initial position to the functional position when closing the closure device contains, for example, superimposed movement components in which a superimposed adjustment takes place, on the one hand, along the linear direction and, on the other hand, along a direction perpendicular to the linear direction or rotating around the linear direction. The result of this is that, when the closure parts approach one another, the connecting element is adjusted relative to the body of the second closure part such that, in the functional position, the connecting element protrudes relative to the body along the linear direction. The movement of the connecting element therefore does not take place purely in a straight line along the linear direction. Rather, the connecting element moves in a guided manner along a movement path that deviates from the linear direction.

[0015] The connecting element can be linearly adjustable on the body of the second closure part. In this case, the adjustment direction is preferably transverse or oblique to the linear direction, so that one directional vector component of the movement points, for example, along the linear direction and another directional vector component points perpendicular to the linear direction.

[0016] In another embodiment, the connecting element is guided rotatably to the body of the second closure part, wherein in this case again a direction vector component of the rotational movement points along the linear direction and a further direction vector component points rotationally around the direction of rotation.

[0017] Other, superimposed movements can also occur. For example, to transfer the connecting element from the starting position to the functional position, it can initially be moved linearly along the linear direction, whereby on part of the adjustment path, for example on the last part of the adjustment path before reaching the functional position, a movement occurs along an adjustment direction different from the linear direction, for example along a helical line directed around the linear direction. In this case, the fact that the adjustment direction is different from the linear direction is to be understood as meaning that the adjustment direction deviates from the linear direction with a directional vector component at least over part of the adjustment path.The directional vector component deviating from the linear direction is in particular directed perpendicular to the linear direction or extends in a plane perpendicular to the linear direction, for example, in a rotational movement directed around the linear direction. However, a directional vector component of the adjustment direction preferably points in the linear direction, so that due to the adjustment movement in the adjustment direction, the connecting element is guided from the initial position into the functional position and, in the functional position, protrudes relative to the body of the second closure part, viewed along the linear direction.

[0018] The adjustability of the connecting element along the adjustment direction, which differs from the linear direction, can be utilized to lock the connecting element in its position relative to the body of the second closure part when the closure device is in the closed position. Thus, in the closed position, due to the engagement of the connecting element with the engagement device, movement of the connecting element along the adjustment direction relative to the second body of the second closure part is blocked. Due to the locking effect, the connecting element cannot move along the adjustment direction relative to the body of the second closure part when the closure device is in the closed position and the connecting element is engaged with the engagement device of the first closure part.Because movement along the adjustment direction is blocked, the connecting element is fixed in its functional position relative to the body of the second closure part, such that the connecting element cannot be adjusted from the functional position. This makes it possible to ensure that in the closed position the connecting element engages with the engagement device of the first closure part and thereby establishes the connection between the closure parts, but the body of the second closure part is not necessarily in contact with the body of the first closure part. By locking the connecting element in the functional position when the closure device is in the closed position, the bodies of the closure parts can be kept at a distance from one another, such that flat contact between the bodies of the closure parts is avoided.This makes it possible, in particular, to create a secure and reliable connection between the closure parts, even with irregularly shaped surfaces of the closure parts, for example, with a padded surface on a body. This connection is independent of the shape of the closure parts' surfaces. This also prevents signs of wear, such as scratches or abrasion, on a padded surface.

[0019] The second closure part can, for example, be arranged on a (quasi-)stationary assembly, for example in a vehicle, for example on a vehicle seat. In the initial position, the connecting element is, for example, completely or partially accommodated in the housing of the second closure part, so that in the initial position corresponding to a non-use position, the connecting element does not protrude outwards and is therefore not a hindrance and, moreover, does not impair the aesthetic external appearance of the associated assembly. The first closure part, on the other hand, can be arranged on an assembly that is to be fixed in a vehicle, for example on an electrical or electronic assembly such as a mobile phone or a navigation device or on a holding device such as a storage compartment, a coat hanger, a table or the like.When the closure parts approach each other, the connecting element is moved from the starting position into the functional position so that the closure parts can be fastened to each other and thus the first closure part is held in position on the second closure part in the closed position of the closure device.

[0020] In one embodiment, the connecting element has a head that is held positively on the engagement device in the closed position. In the closed position of the closure device, the connecting element protrudes with the head relative to the housing of the second closure part and engages the engagement device of the first closure part, so that the closure parts are fixed to one another in a positively locking manner.

[0021] The head of the connecting element can, for example, have an engagement projection forming an undercut, which in the closed position engages with the engagement device, such that the connecting element engages the engagement device in a form-fitting manner with respect to the linear direction. In one embodiment, the second body of the second closure part forms a surface which, in the closed position, faces the first closure part, wherein the head is substantially flush with the surface in the initial position and spaced from the surface along the linear direction in the functional position. In the initial position, the connecting element is received in the body of the second closure part such that the head does not protrude outwards, or only protrudes insignificantly, relative to the surface of the second body, but is substantially flush with the surface.The surface is not necessarily flat, but can be curved, for example. In this case, the head of the connecting element can have a shape that continues the shape of the surface and is thus flush with it. In the initial position, the second closure part thus has a self-contained shape on its outward-facing surface, without the connecting element protruding disruptively from the body of the second closure part.

[0022] In this context, substantially flush means that no sharp-edged areas of the fastener protrude from the surface. In particular, the fastener should not protrude more than 25 mm outward relative to the surface when the fastener is in its initial position.

[0023] When the closure parts approach each other to close the closure device, the connecting element is moved from the functional position to the initial position and, in the functional position, protrudes toward the surface along the linear direction. By moving the connecting element to the functional position, it can be brought into engagement with the engagement device of the first closure part to connect the closure parts to one another in the closed position.

[0024] In one embodiment, the surface of the second body does not contact the first body in the closed position. Because the connecting element is locked in its position relative to the body of the second closure part when the closure device is in the closed position, the bodies of the closure parts can be kept at a distance from one another in the closed position, whereby it can be achieved that in particular the surface of the second closure part does not contact the body of the first closure part. The connection of the closure parts is thus independent of the nature of the bodies of the closure parts, in particular a surface design of the bodies of the closure parts, for example padding on one of the bodies of the closure parts.

[0025] The engagement device of the first closure part can be designed in different ways.

[0026] For example, the engagement device can be designed to establish a latching connection with the connecting element in the closed position. For this purpose, the engagement device can comprise, for example, a spring locking element, such as that described in DE 10 2010 044 198 A1. When the closure device is closed, the connecting element thus engages the engagement device in a latching manner and is preferably held positively on the engagement device in the closed position.

[0027] In one embodiment, the engagement device has an insertion opening into which the connecting element can be inserted in the functional position for closing the closure device.

[0028] In this case, it can be provided that the first magnetic device is arranged on the first body of the first closure part in the region of the insertion opening and is designed to interact with the second magnetic device on the connecting element of the second closure part when the first closure part and the second closure part approach one another to close the closure device in such a way that the connecting element is drawn into the insertion opening due to the magnetic attraction. For example, the first magnetic device can be arranged on a base of the insertion opening so that, through magnetic interaction with the second magnetic device on the connecting element of the second closure part, the connecting element is moved along the linear direction into the insertion opening and the connecting element is thus magnetically drawn into the insertion opening.

[0029] For example, a receiving opening can adjoin the insertion opening, which extends from the insertion opening along an insertion direction pointing transversely to the linear direction and into which the connecting element can be pushed in the insertion direction after insertion into the insertion opening in order to transfer the closure device into the closed position. The closure device is thus closed in such a way that the connecting element is first inserted into the insertion opening along the linear direction and then pushed transversely to the linear direction into the receiving opening adjoining the insertion opening. In the closed position, the connecting element is, for example, positively engaged with the receiving opening, so that the closure parts are held together.

[0030] For example, the receiving opening has at least one edge portion. In the closed position, the connecting element engages behind the at least one edge portion, creating a positive connection between the connecting element and the engagement device, and securing the closure parts to one another in a positive-locking manner.

[0031] In this text, a positive engagement or a positive connection is understood to mean that the locking parts are trapped together with respect to the linear direction due to the shape of the engagement device on the one hand and the connecting element on the other. Thus, they cannot be separated from each other along the linear direction, at least not without breaking the positive connection. The positive connection may be subject to play. Surfaces of engaging projections that engage with each other may also be beveled or curved relative to the linear direction, for example, be spherically shaped.

[0032] In one embodiment, one or more wedge surfaces can be formed on the first closure part, onto which the connecting element engages when the connecting element is inserted into the receiving opening in the insertion direction. Such a wedge surface allows the connecting element to be secured to the engagement device axially without play along the linear direction (in and against the linear direction).

[0033] The keel surface can, for example, be formed on at least one edge section.

[0034] A first wedge surface can, for example, be formed on a side of the edge portion facing outwards towards the second closure part, while a second wedge surface can be formed on a side of the edge portion facing inwards away from the second closure part. The connecting element is designed to interact with both wedge surfaces for axial fixing by wedging when inserted into the receiving opening. In one design, the receiving opening has a slotted opening through which the connecting element engages in the closed position. The slotted opening can, for example, be defined between edge portions of the receiving opening which, for example, extend approximately parallel to one another along the insertion direction or at an oblique angle to the insertion direction, resulting in a pointed slotted opening that tapers in the insertion direction.In the closed position, the connecting element engages behind the edge sections of the slot opening with its head, for example an engagement projection formed on the head, so that there is a positive engagement between the connecting elements and the engagement device.

[0035] In one embodiment, the first closure part has a locking device designed to lock the connecting element to prevent movement counter to the insertion direction out of the closed position. The connecting element can be inserted into the receiving opening in the insertion direction, passing through the locking device during the insertion movement. However, when the closure device is in the closed position, moving the connecting element out of the receiving opening counter to the insertion direction is hindered or blocked by the locking device.

[0036] For example, the locking device can have a locking element that is spring-elastically adjustable relative to the first body, past which the connecting element can be moved in the insertion direction to transfer it into the closed position, but which blocks movement of the connecting element counter to the insertion direction from the closed position. When moving in the insertion direction, the connecting element pushes the locking element aside, for example, so that the locking element can be passed. Once the connecting element has passed the locking element, the locking element snaps back into a locked position due to the spring-elastic preload, so that movement of the connecting element back out of the receiving opening is blocked or made more difficult.

[0037] The locking element can, for example, protrude into the receiving opening in such a way that the connecting element, when moved back against the insertion direction, comes into contact with the locking element, thus locking the connecting element in the receiving opening or at least impeding its opening. To make opening more difficult, the locking element can, for example, be beveled on a stop surface facing the connecting element in the closed position along the insertion direction, so that the connecting element can run onto the stop surface against the insertion direction, and the locking direction can thus be opened upon overcoming a limit force (determined by the shape of the stop surface and the connecting element, and also by a spring preload).

[0038] In contrast, to block the opening, a stop surface of the locking element facing the connecting element in the closed position along the insertion direction can be positioned, for example, perpendicular to the insertion direction, so that the connecting element cannot run onto the stop surface and the locking device can only be opened by actuating the locking device to unlock.

[0039] In one embodiment, the connecting element is guided on the second body at least over part of the adjustment path in such a way that the connecting element can be rotated relative to the second body about an axis of rotation pointing along the v for adjustment between the starting position and the functional position and can be moved along the linear direction due to a rotation. At least over part of the adjustment path when transferred from the starting position to the functional position, the connecting element thus performs an adjustment movement that deviates from a linear movement along the linear direction. For this purpose, the connecting element is guided on the body of the second closure part so that when the connecting element is transferred from the starting position to the functional position, the connecting element is forced to move along the adjustment direction and, for this purpose, is rotated relative to the body about the axis of rotation pointing along the linear direction.

[0040] Due to the rotation, the connecting element also performs a movement along the linear direction and is thus adjusted along the linear direction relative to the body of the second closure part, so that the connecting element is extended from the body and protrudes along the linear direction relative to the body in the functional position.

[0041] The guided movement occurs at least over part of the adjustment path. In contrast, in another part of the adjustment path, a linear movement along the linear direction can occur, for example. For example, to transfer from the initial position to the functional position, the connecting element can first be moved linearly along the linear direction until the connecting element comes into operative connection with a guide device on the body of the second closure part, in order to then move in a guided manner relative to the body of the second closure part during further transfer toward the functional position.

[0042] For example, the second closure part has a guide part arranged on the second body, on which guide part the connecting element is adjustably guided at least over part of the adjustment path along the adjustment direction. For example, a guide track is formed on the guide part, along which the connecting element is guided at least over part of the adjustment path for adjustment along the adjustment direction. The guide track can, for example, be directed along a helical line, so that the connecting element executes a guided, helical movement relative to the body of the second closure part and is thus rotated in a superimposed manner about the linear direction and adjusted linearly along the linear direction relative to the body.

[0043] In one embodiment, the connecting element has a form-fitting section which, in the closed position, engages with the first closure part in a rotationally fixed manner in order to block any movement of the connecting element along the adjustment direction relative to the second body. In the closed position, not only are the closure parts held together, but the position of the connecting element relative to the body of the second closure part is also fixed by blocking any movement of the connecting element along the adjustment direction relative to the body of the second closure part. For this purpose, the connecting element, in the closed position, engages with the first closure part via the form-fitting section, such that any twisting movement of the connecting element in the closed position is blocked.

[0044] For example, the form-fitting section can engage the engagement device in a rotationally fixed manner in the closed position. For example, a head of the connecting element can have a rotationally symmetrical shape (with respect to an axis of rotation pointing along the linear direction) and, for example, form an engagement projection that runs around the axis of rotation and projects radially outwards. In contrast, the form-fitting section can, for example, deviate from a rotationally symmetrical shape, so that engagement with the engagement device can result in a rotationally fixed fixation of the connecting element to the engagement device. For example, in the closed position, the form-fitting section can lie between edge sections of the engagement device, for example between edge sections of a slot opening of a receiving opening of the engagement device.The form-locking section can, for example, be flattened when viewed along a plane perpendicular to the rotation axis, and form flat wall sections facing away from one another and running parallel to one another, with which the form-locking section engages the edge sections of the engagement device in the closed position. Due to the position of the form-locking section between the edge sections of the engagement device, the form-locking section, and above it the connecting element, are rotationally fixed in the closed position.

[0045] In this case, it can be provided that only the engagement of the form-fitting section with the engagement device causes the connecting element to be fully transferred into the functional position. For this purpose, the engagement device is preferably designed to act on the form-fitting section upon establishment of the engagement in order to move the connecting element along the adjustment direction into a rotational position associated with the functional position relative to the second body of the second closure part. For example, due to the magnetic attraction between the magnetic devices, the connecting element can be transferred from the initial position towards the functional position, wherein, for example, due to an elastic prestress, the connecting element is initially not fully moved into the functional position.Only when the connecting element with the form-fitting section engages with the engagement device is the connecting element transferred into a rotational position associated with the functional position due to the interaction with the engagement device and thus completely moved into the functional position, for example, counteracting the prestressing effect of a prestressing element. In the functional position, the connecting element is then preferably prestressed relative to the body of the second closure part and is thus held on the body of the second closure part without play.

[0046] It should be noted that the form-fitting section can also engage positively with other counter-sections on the side of the first closure part in order to fix the connecting element in a rotationally fixed manner relative to the first closure part.

[0047] In particular, the functions can also be separated: For example, the engagement device can only fix the connection along a linear direction, but still allow rotation of the connecting element. The rotation lock can then be achieved separately via one or more other design elements.

[0048] In one embodiment, the second closure part has an elastically deformable prestressing element designed to prestress the connecting element relative to the second body, at least in the functional position. The prestressing element can be formed, for example, by an elastic spring or by a rubber element, such as an O-ring, which extends around a rotational axis associated with the connecting element. Upon transfer into the functional position, the prestressing element is elastically tensioned, so that in the functional position, an elastic prestress is exerted on the connecting element relative to the body of the second closure part.

[0049] In one embodiment, the connecting element is held in the initial position relative to the second body when the closure device is in the open position. For example, the connecting element can be spring-loaded or magnetically preloaded relative to the body of the second closure part toward the initial position.

[0050] In one embodiment, the second closure part has a third magnetic device arranged on the second body of the second closure part, which magnetically interacts with the second magnetic device to hold the connecting element in the initial position. The third magnetic device interacts with the second magnetic device in a magnetically attractive manner, so that when the closure device is open, the connecting element is held in the initial position on the body of the second closure part.If the closure parts are brought closer together, the magnetic attraction between the first magnetic device of the first closure part and the second magnetic device on the connecting element of the second closure part superimposes the magnetic attraction between the second magnetic device and the third magnetic device and exceeds this as soon as the closure parts have been brought sufficiently close to one another, so that the connecting element is transferred from the starting position into the functional position due to the magnetic attraction between the first magnetic device and the second magnetic device.

[0051] In one embodiment, the first closure part and the second closure part are fixed relative to one another in the closed position, viewed along the linear direction and along a plane perpendicular to the linear direction. Thus, in the closed position, the first closure part and the second closure part cannot be moved relative to one another, in particular not even rotationally.

[0052] The fixed position, particularly in a plane perpendicular to the linear direction, in particular rotationally about the linear direction, can be achieved, for example, by a suitable engagement structure on the first closure part and the second closure part. Along the linear direction, however, the closure parts are fixed to one another by the engagement of the connecting element in the engagement device.

[0053] In one embodiment, the second closure part has two connecting elements, each of which is adjustable between an initial position and a functional position relative to the second body and, in the functional position, as viewed along the linear direction, protrudes relative to the second body such that the connecting elements can be brought into engagement with the engagement device of the first closure part. In the closed position, the connecting elements each engage with the engagement device to hold the first closure part and the second closure part against one another. The connecting elements each have an associated second magnetic device for magnetically interacting with the first magnetic device of the first closure part.

[0054] For example, the engagement device on the first closure part can have two spring locking elements, each associated with one of the connecting elements. In another embodiment, two engagement openings and two adjoining receiving openings can be formed on the engagement device, with one insertion opening and one receiving opening each associated with one of the connecting elements.

[0055] Because the connection between the closure parts in the closed position is established via two connecting elements and their engagement with the engagement device of the first closure part, the closure parts are fixed in a positionally fixed manner, in particular also in a rotationally fixed manner, to one another in the closed position and thus establish a positionally fixed connection between assemblies that are assigned to the closure parts.

[0056] If more than two connecting elements are provided, the rotation axes can all be in the same plane, but different from each other, for example. In one embodiment, the first closure part has a first electrical contact assembly, and the second closure part has a second electrical contact assembly. When the closure device is closed, the contact assemblies, each of which can have one or more electrical contacts, come into electrical contact with each other, thus establishing an electrical connection.

[0057] The first electrical contact assembly can be formed, for example, by a first electrical connector part, and the second electrical contact assembly by a second electrical connector part. When the locking device is closed, the connector parts engage with each other in a plug-in manner. The first electrical connector part and the second electrical connector part are connected to each other in a plug-in manner in the closed position. A plug-in direction, along which the plug-in connection is to be established, preferably corresponds to the insertion direction.

[0058] The connector parts can be used, for example, to establish a data connection or an electrical supply connection between assemblies associated with the closure parts. The connector parts can be configured, for example, as USB ports, such as USB-C ports, or other ports for electrical or electronic devices, such as for telecommunications applications.

[0059] In one embodiment, the second connector part is arranged on the connecting element of the second closure part. For example, the first connector part can be arranged in the region of a receiving opening of the engagement device of the first closure part. When the connecting element is brought into engagement with the engagement device upon closing the closure device, the connector parts are connected to one another in a plug-in manner, thus establishing not only the mechanical fastening of the closure parts to one another but also an electrical connection.

[0060] The closure device is designed to be magnetic. The first magnetic device and the second magnetic device can, for example, each be formed by a permanent magnet that faces each other with opposite poles and thus magnetically attracts each other. In another embodiment, the first magnetic device and the second magnetic device can be formed, on the one hand, by a permanent magnet and, on the other hand, by a passive magnetic armature, for example, made of a ferromagnetic material.

[0061] If the second magnetic device is formed by a permanent magnet, the third magnetic device can be formed, for example, by a passive magnetic armature. In another embodiment, the third magnetic device is formed by a permanent magnet that is magnetically attractive to the second magnetic device.

[0062] One or more of the magnetic devices can also be formed by electromagnets, for example.

[0063] The concept underlying the invention will be explained in more detail below with reference to the exemplary embodiments illustrated in the figures. They show:

[0064] Fig. 1A is an exploded view of an embodiment of a closure device;

[0065] Fig. 1 B shows another exploded view of the closure device;

[0066] Fig. 2A is a view of the closure device in an open position;

[0067] Fig. 2B is a plan view of the arrangement according to Fig. 2A;

[0068] Fig. 2C is a sectional view taken along the line AA of Fig. 2B;

[0069] Fig. 2D is a sectional view taken along line BB of Fig. 2C;

[0070] Fig. 2E is a sectional view taken along line DD of Fig. 2C;

[0071] Fig. 3A is a view of the closure device when closing the closure device;

[0072] Fig. 3B is a plan view of the arrangement according to Fig. 3A;

[0073] Fig. 3C is a sectional view taken along line AA of Fig. 3B; Fig. 3D is a sectional view taken along line BB of Fig. 3C;

[0074] Fig. 3E is a sectional view taken along line DD of Fig. 3C;

[0075] Fig. 4A is a view of the closure device during further closing of the closure device;

[0076] Fig. 4B is a plan view of the arrangement according to Fig. 4A;

[0077] Fig. 4C is a sectional view taken along the line AA of Fig. 4B;

[0078] Fig. 4D is a sectional view taken along line BB of Fig. 4C;

[0079] Fig. 4E is a sectional view taken along line DD of Fig. 4C;

[0080] Fig. 5A is a view of the closure device, when further closing the

[0081] locking device;

[0082] Fig. 5B is a plan view of the arrangement according to Fig. 5A;

[0083] Fig. 5C is a sectional view taken along the line AA of Fig. 5B;

[0084] Fig. 5D is a sectional view taken along line BB of Fig. 5C;

[0085] Fig. 5E is a sectional view taken along line DD of Fig. 5C;

[0086] Fig. 6A is a view of the locking device in a closed position of the

[0087] locking device;

[0088] Fig. 6B is a plan view of the arrangement according to Fig. 6A;

[0089] Fig. 6C is a sectional view taken along the line AA of Fig. 6B;

[0090] Fig. 6D is a sectional view taken along line BB of Fig. 6C;

[0091] Fig. 6E is a sectional view taken along line DD of Fig. 6C; Fig. 7A is an exploded view of another embodiment of a closure device;

[0092] Fig. 7B is another exploded view of the closure device;

[0093] Fig. 8A is a view of the closure device in an open position;

[0094] Fig. 8B is another view of the closure device in the open position;

[0095] Fig. 8C is a plan view of the arrangement according to Figs. 8A and 8B;

[0096] Fig. 8D is a sectional view taken along the line CC of Fig. 8C;

[0097] Fig. 8E is a sectional view taken along the line EE of Fig. 8D;

[0098] Fig. 8F is a sectional view taken along line FF of Fig. 8D;

[0099] Fig. 9A is a view of the locking device when closing the

[0100] locking device;

[0101] Fig. 9B another view of the locking device when closing the

[0102] locking device;

[0103] Fig. 9C is a plan view of the arrangement according to Figs. 9A and 9B;

[0104] Fig. 9D is a sectional view taken along the line CC of Fig. 9C;

[0105] Fig. 9E is a sectional view taken along the line EE of Fig. 9D;

[0106] Fig. 9F is a sectional view taken along the line FF of Fig. 9D;

[0107] Fig. 10A is a view of the closure device during further closing of the closure device;

[0108] Fig. 10B shows another view of the closure device during further closing of the closure device; Fig. 10C shows a plan view of the arrangement according to Figs. 10A and 10B;

[0109] Fig. 10D is a sectional view taken along the line CC of Fig. 10C;

[0110] Fig. 10E is a sectional view taken along the line EE of Fig. 10D;

[0111] Fig. 10F is a sectional view taken along the line FF of Fig. 10D;

[0112] Fig. 11A is a view of the closure device in a closed position of the closure device;

[0113] Fig. 11 B shows another view of the locking device, in the closed position of the locking device;

[0114] Fig. 11C is a plan view of the arrangement according to Figs. 11A and 11B;

[0115] Fig. 11 D is a sectional view taken along the line CC of Fig. 11 C;

[0116] Fig. 11 E is a sectional view along the line EE according to Fig. 11 D;

[0117] Fig. 11 F is a sectional view taken along the line FF of Fig. 11 D;

[0118] Fig. 12A is a view of guide parts for guiding connecting elements of a second closure part of a closure device;

[0119] Fig. 12B is a plan view of the guide parts;

[0120] Fig. 12C is a sectional view taken along the line AA of Fig. 12B;

[0121] Fig. 12D is a sectional view taken along line BB of Fig. 12C;

[0122] Fig. 13A is a sectional view according to Fig. 12C, in another embodiment of the guide parts; and

[0123] Fig. 13B shows the sectional view according to Fig. 12D, according to the other exemplary embodiment. In an exemplary embodiment shown in Fig. 1A, 1B to Fig. 6A-6E, a closure device 1 has a first closure part 2 and a second closure part 3 to be connected to the first closure part 2 along a closing direction X corresponding to a linear direction. The closure parts 2, 3 are separated from one another in an open position, shown in Fig. 2A to 2E. In a closed position, shown in Fig. 6A to 6E, the closure parts 2, 3 are fastened to one another, so that assemblies assigned to the closure parts 2, 3 are connected to one another via the closure device 1.

[0124] The closure part 2 has a body 20 on which an engagement device 21 is formed. The engagement device 21 forms, as can be seen, for example, from the exploded view according to Fig. 1B, insertion openings 210A, 210B, each of which is adjoined by an associated receiving opening 211A, 211B along an insertion direction Y.

[0125] Magnetic devices 22A, 22B are arranged in the region of the insertion openings 210A, 210B on the body 20. In the illustrated embodiment, the magnetic devices 22A, 22B are designed as permanent magnets and are received in openings 200A, 200B on the body 20, as can be seen from the exploded view according to Fig. 1A.

[0126] The closure part 3 has connecting elements 34A, 34B, which are guided on guide parts 31A, 31B and, above them, on a body 30 of the closure part 3. The guide parts 31A, 31B are attached to the body 30 via holders 301 in the form of locking devices and accommodate the connecting elements 34A, 34B within them.

[0127] Each connecting element 34A, 34B has a magnetic device 32A, 32B in the form of a permanent magnet, which interacts in a magnetically attractive manner with a respective associated magnetic device 22A, 22B on the body 20 of the closure part 2. As can be seen from the sectional view according to Fig. 2C in conjunction with Fig. 1A, the magnetic devices 32A, 32B are arranged in the region of a head 343 of the respective associated connecting element 34A, 34B.

[0128] Each connecting element 34A, 34B has an adjusting body 340 on which the head 343 is formed. The head 343 forms an engagement projection for engaging the engagement device 21 of the closure part 2. A form-fitting section 344 with flattened side surfaces is formed between the head 343 and a cylindrical section of the adjusting body 340. A collar 341 projects radially from the adjusting body 340 and carries engagement elements 342, via which the respective connecting element 34A, 34B is guided along guide tracks 310 inside the respectively associated guide part 31A, 31B.

[0129] Each guide part 31A, 31B is closed on a side facing away from a surface 300 of the body 30 by a base element 35A, 35BB, on which a third magnetic device 36A, 36B in the form of a permanent magnet is received. Each base element 35A, 35B has a base plate 350, from which a pin 351 protrudes centrally, within which the associated magnetic device 36A, 36B is received, as can be seen, for example, from the sectional view according to Fig. 2C.

[0130] Inside each guide part 31A, 31B, a prestressing element 33A, 33B in the form of a rubber-elastic O-ring is accommodated, which serves to prestress the respective connecting element 34A, 34B relative to the guide part 31A, 31B and thus relative to the body 30.

[0131] In the open position of the closure device 1, shown in Figs. 2A to 2E, the closure parts 2, 3 are separated from one another. The connecting elements 34A, 34B are in an initial position shown in Figs. 2A to 2E, in which the heads 343 of the connecting elements 34A, 34B are flush with the surface 300 of the body 30 and thus do not protrude outward. In the initial position, the connecting elements 34A, 34B are thus received inside the guide parts 31A, 31B and thus countersunk relative to the body 30 of the closure part 3.

[0132] In the initial position when the closure device 1 is open, the magnetic devices 32A, 32B of the connecting parts 34A, 34B interact with the magnetic devices 36A, 36B on the base elements 35A, 35B and thereby magnetically hold the connecting elements 34A, 34B in the initial position.

[0133] Because the connecting elements 34A, 34B do not protrude outwards from the body 30 in the initial position, the connecting elements 34A, 34B are not obstructive when the closure device 1 is open and do not disturb an aesthetic impression, for example in the interior of a vehicle (for example when the closure part 3 is fixed to an associated assembly, for example to a vehicle seat, in order to enable an assembly associated with the closure part 2 to be fastened to the vehicle assembly associated with the closure part 3 by connecting it to the closure part 2).

[0134] If the closure parts 2, 3 are brought (approximately) closer to one another along the closing direction X, as can be seen from Fig. 3A to 3E, the closure parts 2, 3 are brought into a position relative to one another due to the magnetic attraction forces between the magnetic devices 22A, 22B on the closure part 2 and the magnetic devices 32A, 32B on the closure part 3, in which the connecting elements 34A, 34B are opposite the insertion openings 210A, 210B of the engagement device 21 and are aligned with the insertion openings 210A, 210B along the closing direction X, as can be seen from the sectional view according to Fig. 3C.

[0135] If the closure parts 2, 3 are brought close to one another along the closing direction X to such an extent that the magnetic attraction forces between the magnetic devices 22A, 22B on the closure part 2 and the magnetic devices 32A, 32B on the closure part 3 exceed the magnetic holding forces between the magnetic devices 32A, 32B, 36A, 36B on the closure part 3, the connecting elements 34A, 34B are moved from the starting position according to Fig. 3A to 3E in the direction of a functional position relative to the body 30 of the closure part 3, as can be seen from Fig. 4A to 4E. The connecting elements 34A, 34B are thus adjusted on the guide parts 31A, 31B and thereby extended out of the body 30 through openings 302A, 302B in the surface 300, so that the connecting elements 34A, 34B protrude with their heads 343 relative to the surface 300 of the body 30.

[0136] The connecting elements 34A, 34B are guided via the engagement elements 342 on the collar 341 of the adjustment body 340 of the respective connecting element 34A, 34B on guide tracks 310 of the respectively associated guide part 31A, 31B in such a way that the connecting elements 34A, 34B execute a forced movement relative to the body 30 when transferred from the initial position towards the functional position. In particular, the connecting elements 34A, 34B do not move out of the guide parts 31A, 31B in a straight line along the closing direction X, but are rotated about an associated rotation axis D along an adjustment direction V on the respectively associated guide part 31A, 31B when transferred towards the functional position.The guideways 310, in the form of radially inwardly projecting, helically extending guide sections, have the effect, in the manner of a thread, that when rotating about the rotation axis D along the adjustment direction V, the connecting elements 34A, 34B are also adjusted in a superimposed movement along the closing direction X relative to the body 30 and are thus transferred in the direction of the functional position in which the connecting elements 34A, 34B protrude with their heads 343 from the surface 300 of the body 30 in the direction of the closure part 2.

[0137] In the position according to Fig. 4A to 4E, the connecting elements 34A, 34B with their heads 343 are in contact with a respective bottom of the associated insertion opening 210A, 210B and are located opposite the magnetic devices 22A, 22B on the body 20 of the closure part 2, as can be seen from Fig. 4C.

[0138] To completely close the closure device 1, the closure parts 2, 3 are now displaced relative to one another along the insertion direction Y, which extends transversely to the closing direction X, so that the connecting elements 34A, 34B run into the receiving openings 211A, 211B along the insertion direction Y, as can be seen from Fig. 5A to 5E. The connecting elements 34A, 34B thus engage with the receiving openings 211A, 211B in such a way that the connecting elements 34A, 34B engage with their heads 343 behind edge sections 212 of the receiving openings 211A, 211B and the form-fitting section 344 axially adjoining the respective head 343 engages between the associated edge sections 212, as can be seen in the transition from Fig. 5A to 5E to Fig. 6A to 6E.

[0139] In the illustrated embodiment, the connecting elements 34A, 34B are inserted into the receiving openings 211A, 211B manually by a user, whereby the insertion can be assisted, for example, by gravity.

[0140] When inserted into the receiving openings 211 A, 211 B, the magnetic devices 22A, 22B on the closure part 2 and the magnetic devices 32A, 32B on the connecting elements 34A, 34B on the closure part 3 are tangentially moved away from each other along the insertion direction Y, so that the insertion takes place against the magnetic attraction force of the magnetic devices 22A, 22B, 32A, 32B.

[0141] A locking device 24 is arranged on the body 20 of the closure part 2, which locking device has a locking element 240 that is adjustable on the body 20 transversely to the insertion direction Y and transversely to the closing direction X and is spring-loaded relative to the body 20 via a spring element 242. The locking element 240 engages with a locking lug 241 in the area of ​​the receiving opening 211 B, so that the connecting element 34B slides with its head 343 onto the locking lug 241 when inserted into the receiving opening 211 B, pushes it aside and thus passes the locking element 240, as can be seen in the transition from Fig. 5A-5E to Fig. 6A-6E.

[0142] In the closed position shown in Fig. 6A to 6E, the closure device 1 is thus locked in that the connecting element 34B is blocked by the locking device 24 in the receiving opening 211B and thus the other connecting element 34A cannot slide out of the associated receiving opening 211A against the insertion direction Y or can only do so with difficulty.

[0143] As can be seen from Figs. 4A-4E and 5A-5E, the prestressing element 33A, 33B of each connecting element 34A, 34B assumes an intermediate position between the collar 341 of the connecting element 34A, 34B and the body 30 during the magnetically induced adjustment of the connecting element 34A, 34B from the initial position toward the functional position and is elastically tensioned. The prestressing elements 33A, 33B ensure that the respective connecting element 34A, 34B is not yet fully transferred into a rotational position associated with the functional position due to the magnetic interaction of the magnetic devices 22A, 22B, 32A, 32B, but rather a slight residual angle remains, as can be seen from Figs. 4A-4E and 5A-5E.

[0144] Only when the connecting elements 34A, 34B are pushed into the receiving openings 211A, 211B are they fully transferred into their rotational position assigned to the functional position, brought about by the engagement of the form-fitting section 344 with the flattened side cheeks between the edge sections 212 of the respectively assigned receiving opening 211A, 211B. The pushing of the form-fitting section 344 between the edge sections 212 thus causes the respective connecting element 34A, 34B to rotate into the end position shown in Fig. 6A-6E, in which the form-fitting sections 344 of the connecting elements 34A, 34B engage in a form-fitting manner between the edge sections 212 of the receiving opening 211A, 211B and are thus locked in a form-fitting manner between the edge sections 212.

[0145] Because the connecting elements 34A, 34B engage with their form-fitting sections 344 in a form-fitting manner between the edge sections 212 of the receiving openings 211A, 211B when the closure device 1 is in the closed position according to Figs. 6A to 6E, the connecting elements 34A, 34B are locked in their rotational position relative to the body 20 of the closure part 2 and thus also relative to the body 30 of the closure part 3. The closure parts 2, 3 are fixed in position relative to one another in the closed position by the arrangement of two connecting elements 34A, 34B. Because the connecting elements 34A, 34B are locked in their rotational position, the connecting elements 34A, 34B cannot, in particular, rotate back relative to the guide parts 31A, 31B counter to the adjustment direction V and are thus fixed in the extended functional position relative to the body 30.

[0146] The final turning of the connecting elements 34A, 34B into the functional position when inserted into the receiving openings 211A, 211B causes the

[0147] Connecting elements 34A, 34B are extended slightly further along the closing direction X relative to the body 30, counter to the preload of the preload elements 33A, 33B, and the preload elements 33A, 33B are thus tensioned. By preloading the preload elements 33A, 33B, play is eliminated and rattle-free operation is achieved in the closed position.

[0148] In the closed position, the connecting elements 34A, 34B are thus fixed in their position relative to the body 30 of the closure part 3. This means that the connection between the closure parts 2, 3 is independent of whether the bodies 20, 30 of the closure parts 2, 3 touch each other in the closed position. Rather, the connection is established solely via the connecting elements 34A, 34B and their engagement in the engagement device 21, wherein the surface 300 of the body 30 of the closure part 3 can be spaced from the body 20 of the closure part 2, as can be seen, for example, from the sectional views according to Figs. 6C and 6E.

[0149] Because the bodies 20, 30 of the closure parts 2, 3 do not engage one another in the closed position, the bodies 20, 30 of the closure parts 2, 3 can have any desired shape on their mutually facing sides. In particular, the surface 300 of the body 30 of the closure part 3 can be curved or corrugated, rather than a flat shape. Because the connection of the closure parts 2, 3 in the closed position is independent of the contact of the bodies 20, 30, the shape of the bodies 20, 30 on their mutually facing sides or, for example, padding on the surface 300 does not impair the connection of the closure parts 2, 3.

[0150] This also enables, in particular, the integration of one or both closure parts 2, 3 into respective associated assemblies, for example, into a vehicle assembly, for example, into a vehicle seat. If the closure device 1 is to be opened again, a user can, for example, manually act on the locking device 24 and adjust the locking element 240 such that the locking lug 241 is removed from the region of the receiving opening 211B transversely to the insertion direction Y, so that the connecting elements 34A, 34B can be pushed out of the receiving openings 211A, 211B along the insertion direction Y, and the closure device 1 can thus be opened.

[0151] In the illustrated embodiment, an electrical connector part 23 is arranged on the body 20 of the closure part 2, which is located at one end of the receiving opening 211 B. An associated mating connector part 37 is arranged on the adjusting body 340 of the connecting element 34B. In the functional position of the connecting element 34B, the mating connector part 37 assumes a position opposite the connector part 23, so that when the connecting element 34B is inserted along the insertion direction Y into the associated receiving opening 211 B, the connector parts 23, 37 engage with one another in a plug-in manner, thus establishing an electrical connection between the connector parts 23, 37.

[0152] The connector parts 23, 37 can, for example, form an electrical connector via which data signals can be transmitted and / or an electrical supply can be provided. For example, such a connector can be a USB connector, for example a USB-C connector.

[0153] In a modified embodiment shown in Fig. 7A, 7B to 11A-11F, the surface 300 of the body 30 of the closure part 3 is curved, wherein in the open position of the closure device 1, shown in Fig. 8A to 8F, the heads 343 of the connecting elements 34A, 34B in the openings 302A, 302B are flush with the surface 300 and thereby take up and continue the curved shape of the surface 300.

[0154] In the embodiment according to Figs. 7A, 7B to 11A-11F, the guide parts 31A, 31B are formed integrally with the body 30.

[0155] The connecting elements 34A, 34B are guided on the guide parts 31A, 31B by corresponding alignment of the guide tracks 310 along opposite adjustment directions V, V', as can be seen, for example, in Fig. 9E in the transition to Fig. 10E. When transferred from the respective starting position towards the functional position, the connecting elements 34A, 34B are thus rotated in opposite directions to one another, wherein the pitch of the opposing guide tracks 310 on the guide parts 31A, 31B is equal in amount and thus the connecting elements 34A, 34B are extended the same distance along the closing direction X.

[0156] Accordingly, the final transfer of the connecting elements 34A, 34B into the functional position when inserted along the insertion direction Y into the receiving openings 211A, 211B is in the opposite direction, as can be seen from Fig. 10E in the transition to Fig. 11E.

[0157] Otherwise, the embodiment according to Figs. 7A, 7B to 11 A-11 F is functionally identical to the embodiment described above, so that reference should also be made to the explanations in this regard.

[0158] In the described embodiments, the guideways 310 on the guide parts 31A, 31B are formed by radially inwardly projecting guide sections shaped like threaded sections, which force the connecting elements 34A, 34B into a helical movement when transferred in the direction of the functional position, due to which the connecting elements 34A, 34B are adjusted axially along the closing direction X in a superimposed manner and are also rotated about the respectively assigned axis of rotation D pointing along the closing direction X.

[0159] In one embodiment, shown in Fig. 12A to 12D, the adjustment movement of the connecting elements 34A, 34B is guided along the entire adjustment path from the initial position towards the functional position along helical guideways 310.

[0160] In another embodiment, shown in Fig. 13A, 13B, the guidance along helical guideways 310 occurs only over a portion of the adjustment path. Initially, upon transfer from the initial position, each connecting element 34A, 34B is moved linearly along the closing direction X until the engagement elements 342 interact with the guideways 310, and then the further movement of the connecting elements 34A, 34B from the initial position to the functional position occurs in a guided manner along the guideways 310 in a helical movement. The concept underlying the invention is not limited to the previously described embodiments, but can also be implemented in other ways.A locking device of the type described can be used, for example, in a vehicle, for example to secure objects, such as electrical or electronic devices, to a vehicle seat or other vehicle component. However, this is not limiting. A locking device of the type described can be used to connect any number of components to one another.

[0161] List of reference symbols

[0162] 1 locking device

[0163] 2 locking part

[0164] 20 bodies

[0165] 200A, 200B recess

[0166] 201 recess

[0167] 21 Intervention device

[0168] 210A, 210B insertion opening

[0169] 211A, 211 B receiving opening

[0170] 212 marginal sections

[0171] 213 slot opening.

[0172] 22A, 22B Magnetic device

[0173] 23 Connector part

[0174] 24 locking device

[0175] 240 locking element

[0176] 241 locking lug

[0177] 242 spring

[0178] 3 closure part

[0179] 30 bodies

[0180] 300 surface

[0181] 301 bracket

[0182] 302A, 302 B opening

[0183] 31A, 31B guide part

[0184] 310 guideway

[0185] 32A, 32B magnetic device

[0186] 33A, 33B Preload element

[0187] 34A, 34B connecting element

[0188] 340 adjusting bodies

[0189] 341 Bund

[0190] 342 engagement element

[0191] 343 head

[0192] 344 Form-fitting section

[0193] 35A, 35B floor element

[0194] 350 base plate

[0195] 351 cones

[0196] 36A, 36B Magnetic element 37 Connector part

[0197] D axis of rotation

[0198] Q transverse direction

[0199] V, V' Adjustment direction X Closing direction

[0200] Y insertion direction

Claims

Claims 1. Closure device (1), with a first closure part (2) which has a first body (20), an engagement device (21) arranged on the first body (20) and a first magnetic device (22A, 22B), and a second closure part (3) which has a second body (30), a connecting element (34A, 34B) movably arranged on the second body (30) and a second magnetic device (32A, 32B) arranged on the connecting element (34A, 34B), wherein for closing the closure device (1) the first closure part (2) and the second closure part (3) can be brought closer to one another, in a closed position the connecting element (34A, 34B) is in engagement with the engagement device (21) for holding the first closure part (2) and the second closure part (3) against one another, and for opening the closure device (1) the engagement between the connecting element (34A, 34B) and the engagement device (21) can be canceled,such that the first closure part (2) and the second closure part (3) are separable from one another, wherein the connecting element (34A, 34B) is adjustable along an adjustment path between an initial position, in which the connecting element (34A, 34B) is at least partially received in the body (30), and a functional position relative to the second body (30) and, in the functional position, viewed along a linear direction (X), protrudes relative to the second body (30) in such a way that the connecting element (34A, 34B) can be brought into engagement with the engagement device (21) of the first closure part (2), wherein the first magnet device (22A, 22B) and the second magnet device (32A, 32B) are designed to cooperate in a magnetically attractive manner when the first closure part (2) and the second closure part (3) approach one another in order to move the connecting element (34A, 34B) from the initial position into the functional position to transfer, characterized bythat the connecting element (34A, 34B) is movable relative to the second body (30) at least over a part of the adjustment path along an adjustment direction (V, V') different from the linear direction (X) for transferring from the initial position to the functional position, wherein in the closed position, due to the engagement of the connecting element (34A, 34B) with the engagement device (21), a movement of the connecting element (34A, 34B) along the adjustment direction (V, V') relative to the second body (30) is blocked.

2. Closure device (1) according to claim 1, characterized in that the linear direction (X) corresponds to a closing direction along which the first closure part (2) and the second closure part (3) can be brought closer together to close the closure device (1).

3. Closure device (1) according to claim 1 or 2, characterized in that the connecting element (34A, 34B) has a head (343) which is held in a form-fitting manner on the engagement device (21) in the closed position.

4. Closure device (1) according to claim 3, characterized in that the second body (30) forms a surface (300) which, in the closed position, faces the first closure part (2), wherein the head (343) is substantially flush with the surface (300) in the initial position and is spaced from the surface along the linear direction (X) in the functional position.

5. Closure device (1) according to claim 4, characterized in that the surface (300) of the second body (30) is not in contact with the first body (20) in the closed position.

6. Closure device (1) according to one of the preceding claims, characterized in that the engagement device (21) has an insertion opening (210A, 210B) into which the connecting element (34A, 34B) can be inserted in the functional position for closing the closure device (1).

7. Closure device (1) according to claim 6, characterized in that the first magnetic device (22A, 22B) is arranged on the first body (20) in the region of the insertion opening (210A, 210B) and is designed to cooperate with the second magnetic device (32A, 32B) when the first closure part (2) and the second closure part (3) approach each other to close the closure device (1) in such a way that the connecting element (34A, 34B) is drawn into the insertion opening (210A, 210B) due to the magnetic attraction.

8. Closure device (1) according to claim 6 or 7, characterized in that the engagement device (21) has a receiving opening (211 A, 211 B) which adjoins the insertion opening (210A, 210B) along an insertion direction (Y) pointing transversely to the linear direction (X) and into which the connecting element (34A, 34B) can be inserted in the insertion direction (Y) after insertion into the insertion opening (210A, 210B) in order to transfer the closure device (1) into the closed position.

9. Closure device (1) according to claim 8, characterized in that the receiving opening (211A, 211B) has at least one edge portion (212), wherein the connecting element (34A, 34B) engages behind the at least one edge portion (212) in the closed position.

10. Closure device (1) according to claim 8 or 9, characterized in that the receiving opening (211A, 211B) has a slot opening (213) through which the connecting element (34A, 34B) engages in the closed position.

11. Closure device (1) according to one of claims 8 to 10, characterized in that the first closure part (2) has a locking device (24) which is designed to lock the connecting element (34A, 34B) to block a movement of the connecting element (34A, 34B) counter to the insertion direction (Y) out of the closed position.

12. Closure device (1) according to claim 11, characterized in that the locking device (24) has a locking element (240) which is resiliently adjustable relative to the first body (20), past which the connecting element (34A, 34B) can be moved in the insertion direction (Y) for transfer into the closed position, but which blocks a movement of the connecting element (34A, 34B) counter to the insertion direction (Y) out of the closed position.

13. Closure device (1) according to one of the preceding claims, characterized in that the connecting element (34A, 34B) is guided on the second body (30) at least over part of the adjustment path in such a way that the connecting element (34A, 34B) is rotatable relative to the second body (30) about an axis of rotation (D) pointing along the linear direction (X) for adjustment between the initial position and the functional position and is movable along the linear direction (X) due to a rotation.

14. Closure device (1) according to one of the preceding claims, characterized in that the second closure part (3) has a guide part (31 A, 31 B) arranged on the second body (30), on which the connecting element (34A, 34B) is guided adjustably at least over part of the adjustment path along the adjustment direction (V, V').

15. Closure device (1) according to claim 14, characterized in that a guide track (310) is formed on the guide part (31 A, 31 B), along which guide track the connecting element (34A, 34B) is guided at least on the part of the adjustment path for adjustment along the adjustment direction (V, V').

16. Closure device (1) according to claim 15, characterized in that the guide track (310) follows a screw line.

17. Closure device (1) according to one of the preceding claims, characterized in that the connecting element (34A, 34B) has a Form-locking section (344) which, in the closed position, engages rotationally fixedly with the first closure part (2) in order to block a movement of the connecting element (34A, 34B) along the adjustment direction (V, V') relative to the second body (30).

18. Closure device (1) according to claim 17, characterized in that the form-fitting section (344) is in rotationally fixed engagement with the engagement device (21) in the closed position.

19. Closure device (1) according to claim 17 or 18, characterized in that the form-fitting section (344) in the closed position lies in a form-fitting manner between edge sections (212) of the engagement device (21) for rotationally fixed fixing.

20. Closure device (1) according to one of claims 17 to 19, characterized in that the engagement device (21) is designed to act on the positive-locking section (344) when the engagement is established in order to move the connecting element (34A, 34B) along the adjustment direction (V, V') into a rotational position associated with the functional position relative to the second body (30) of the second closure part (3).

21. Closure device (1) according to one of the preceding claims, characterized in that the second closure part (3) has an elastically deformable prestressing element (33A, 33B) which is designed to clamp the connecting element (34A, 34B) at least in the functional position relative to the second body (30).

22. Closure device (1) according to one of the preceding claims, characterized in that the connecting element (34A, 34B) is held in the initial position relative to the second body (30) in an open position of the closure device (1).

23. Closure device (1) according to claim 22, characterized in that the second closure part (3) has a third magnetic device (36A, 36B) arranged on the second body (30) of the second closure part (3), which magnetically cooperates with the second magnetic device (32A, 32B) for holding the connecting element (34A, 34B) in the starting position.

24. Closure device (1) according to one of the preceding claims, characterized in that the first closure part (2) and the second closure part (3) are fixed to one another in the closed position, viewed along the linear direction (X) and along a plane perpendicular to the linear direction (X).

25. Closure device (1) according to one of the preceding claims, characterized in that the second closure part (3) has two connecting elements (34A, 34B), which are each adjustable between an initial position and a functional position relative to the second body (30) and, in the functional position, viewed along the linear direction (X), protrude relative to the second body (30) in such a way that the connecting elements (34A, 34B) can be brought into engagement with the engagement device (21) of the first closure part (2), wherein, in the closed position, the connecting elements (34A, 34B) are each engaged with the engagement device (21) for holding the first closure part (2) and the second closure part (3) against one another.

26. Closure device (1) according to one of the preceding claims, characterized in that the first closure part (2) has a first electrical contact assembly (23) and the second closure part (3) has a second electrical contact assembly (37), wherein the first electrical contact assembly (23) and the second electrical contact assembly (37) are electrically connected to one another in the closed position.

27. Locking device (1) according to one of the preceding claims, characterized in that the first electrical contact assembly (23) is formed by a first electrical connector part and the second electrical contact assembly (37) is formed by a second electrical connector part (37), wherein the first electrical connector part (23) and the second electrical connector part (37) are plug-connected to one another in the closed position.

28. Closure device (1) according to claim 26 or 27, characterized in that the second electrical contact assembly (37) is arranged on the connecting element (34).

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