Connecting device

Abstract

To provide a connecting device capable of placing connecting parts on each other in a simple and easy manner and holding them securely and firmly at a connecting position. The coupling device 1 comprises a first base body 20, a first coupling part 2 having engagement protrusions 240, 241 firmly arranged on the body 20, a second base body 30, and a second coupling part 3 having an engagement portion 341 firmly arranged on the second base body and attachable to the first coupling part in a closing direction X. The first coupling part comprises a first magnetic device 21, and the second coupling part comprises a second magnetic device 31, which cooperate by magnetic attraction in the closing direction X to assist the first coupling part and the second coupling part in attaching to each other. The first coupling part has blocking portions 236, 238 which interact with the second coupling part in the coupling position to block the engagement of the engagement portion 341 with at least one engagement protrusion 240, 241 in the opposite direction to the engagement direction Y.

Description

[Technical Field]

[0001] The invention relates to a coupling device as defined in the preamble of claim 1 . [Background technology]

[0002] The coupling device includes a first coupling part having a first base body and at least one engagement protrusion firmly attached to the first base body. The coupling device further includes a second coupling part having a second base body and an engagement part firmly attached to the second base body, the second coupling part being capable of being placed on the first coupling part in a closing direction, the engagement part being capable of engaging with the at least one engagement protrusion of the first coupling part along an engagement direction different from the closing direction, and the engagement part engaging with the at least one engagement protrusion of the first coupling part at a coupling position between the first coupling part and the second coupling part. The first coupling part includes a first magnetic device, and the second coupling part includes a second magnetic device. The first magnetic device and the second magnetic device cooperate by magnetically attracting the first connecting part and the second connecting part along the closing direction to assist in placing the first connecting part and the second connecting part on each other.

[0003] In the coupling device, at least one engagement protrusion is rigidly formed on the first base body of the first coupling part. The second coupling part can be engaged with the at least one rigid engagement protrusion by engaging the engagement portion of the second coupling part with the at least one engagement protrusion of the first coupling part. The first coupling part and the second coupling part are placed together along a closing direction, and the magnetic devices of the coupling parts provide a magnetic attraction force along the closing direction, attracting the coupling parts to each other along the closing direction. Meanwhile, the engagement of the engagement portion of the second coupling part with the at least one engagement protrusion of the first coupling part occurs along an engagement direction transverse to the closing direction. In the coupling position, the engagement portion engages with the at least one engagement protrusion in a form-locking or force-form-locking manner, thereby holding the coupling parts together.

[0004] Here, the engagement direction being different from the closing direction means that the engagement direction is perpendicular to the closing direction or at an oblique angle to the closing direction. The engagement direction does not necessarily have to be strictly perpendicular to the closing direction, but may be at an oblique angle to the closing direction. However, the engagement direction is not oriented along the closing direction, and in particular, is not opposite to the closing direction.

[0005] From EP 3 616 553 A1, a fastening device for detachably connecting two parts is known, in which a first connecting part is placed on a second connecting part, which can be connected to one another, and on one connecting part a shoelace is arranged, which can be tightened by connecting the connecting parts to one another.

[0006] From EP 3 192 388 B1 a fastening device is known in which a first connecting part has a rigid engaging projection and can be connected to a second connecting part, on which a strap is adjustably arranged. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] European Patent Application Publication No. 3616553 [Patent Document 2] European Patent No. 3192388 Summary of the Invention [Problem to be solved by the invention]

[0008] In a connecting device of the above kind, it is generally desirable that the connecting parts can be connected in a way that is simple, easy, and tactilely pleasant for the user. Preferably, the connecting parts should be able to be connected in a positionally tolerant manner even if they are not placed accurately. At the connecting position, the connecting parts should have a secure and strong connection.

[0009] SUMMARY OF THE INVENTION It is an object of the present invention to provide a connecting device which allows the connecting parts to be placed together in a simple and convenient manner and which provides a secure and strong hold on each other in the connecting position. [Means for solving the problem]

[0010] This object is achieved by the subject matter comprising the features of claim 1.

[0011] In other words, the first base body has a form-engaging portion against which the second base body abuts at the connection position between the first connecting part and the second connecting part, thereby resisting tilting of the second connecting part relative to the first connecting part, and in the connection position, the second base body abuts against the first base body in a first region and does not abut against the first base body in a second region adjacent to the first region in the engagement direction, so that a free space is formed between the first base body and the second base body along the closing direction, and a third region adjacent to or spaced apart from the second region in the engagement direction is supported by the form-engaging portion.

[0012] The first base body has a form-engaging portion against which the second base body abuts at the connection position between the first connecting part and the second connecting part, thereby resisting tilting of the second connecting part relative to the first connecting part. Specifically, the form-engaging portion is formed in a front region of the first base body with respect to the engagement direction and is firmly formed on the first base body. The second base body is supported by the form-engaging portion, particularly so as to resist movement in the closing direction. This makes tilting of the second connecting part relative to the first connecting part at least more difficult due to the support of the form-engaging portion.

[0013] In the present connecting device, preferably, when a load is applied as intended in a loaded state, a load direction in which a load force acts on the second connecting component can be a direction having at least one directional vector component in the engagement direction, and therefore, in the loaded state, the second connecting component is subjected to a load in the engagement direction with the first connecting component, i.e., a load in the engagement direction with the at least one engagement protrusion firmly formed on the first connecting component.

[0014] Such a load may cause a torque to act on the second connecting part, causing the second connecting part to tilt about a lateral direction perpendicular to the closing direction and the engagement direction. To resist such tilting, the form-engaging portion that realizes support for the second base body is formed, particularly in the front region of the first base body, so that the second base body is supported against tilting, particularly about the lateral direction. This prevents the connecting parts from unintentionally loosening from each other due to the load.

[0015] The form-locking and resulting support ensure that the connecting parts are held together securely, reliably and strongly in the connected position without the possibility of the connecting parts coming apart due to loading forces.

[0016] In the coupled position, the second base body abuts against the first base body in a first region. For example, the base surface of the second base body can be placed against the bottom surface of the first base body, thereby creating surface contact between the second base body and the first base body in the first region. In contrast, in a second region adjacent to the first region in the engagement direction, the second base body does not contact the first base body, creating an empty space between the first base body and the second base body along the closing direction. A third region is adjacent to or spaced apart from the second region along the engagement direction. This third region of the second base body is supported by the form-engaging portion of the first base body.

[0017] In other words, the second base body is supported on the first base body in a two-point support manner with an empty space formed therebetween (note that there may also be a configuration in which contact occurs in two or more areas). Specifically, the third area may be formed in a region of the second base body that is forward in the engagement direction. This allows the third area to be used, in particular, to provide support against tilting about a lateral direction perpendicular to the closing direction and the engagement direction. In contrast, the first area may be formed in a portion of the second base body that is rearward relative to the engagement direction.

[0018] The free space formed between the second region of the second base body and the first base body allows the connecting parts to be easily attached to or detached from each other. For example, when detaching the connecting parts, it may be necessary or advantageous to first move the second connecting part a predetermined (slight) distance in the direction opposite to the engagement direction with the first connecting part, and then tilt it laterally toward the first connecting part. When tilting, for example, it is possible to move the second region and / or the third region into the free space. This allows the second connecting part to be tilted relative to the first connecting part in a way that is easy and tactilely pleasant for the user.

[0019] That is, in the coupled position, the second coupling part is fixed to the first coupling part with a limited degree of freedom, particularly under load. When disengaging, the coupling parts are moved in the opposite direction to the engagement direction (for example, within an allowable range) or slightly tilted relative to each other, causing the second coupling part to slide out of the form-engaging portion, thereby easing the limited degree of freedom. This allows the coupling parts to tilt relative to each other. That is, when disengaging, by inserting the coupling parts into the empty space after the initial movement, the coupling parts can be tilted or rotated relative to each other (more strongly), allowing the user to easily and tactilely disengage the coupling parts.

[0020] The at least one engagement protrusion is formed on the first base body of the first connecting part in a rigid and non-deformable manner (when a load is applied as intended) so that the engagement protrusion can reliably absorb and dissipate forces when engaging the engagement portion of the second base body. Preferably, the at least one engagement protrusion is formed as a single piece with the first base body of the first connecting part, and the first base body is rigid and non-deformable as a whole.

[0021] "Non-deformable" here should be understood to mean that the material choice and geometry of the base body are essentially rigid to ensure that the base body of the first connecting part and the engaging projections formed thereon do not deform under the intended load, i.e., the base body is inelastic. For example, the base body of the first connecting part may be made of metal or a hard plastic material.

[0022] Similarly, the base body on which the engaging portion of the second connecting part is formed is also rigid and undeformable, and is made of, for example, metal or hard plastic material.

[0023] The placement of the connecting parts is magnetically assisted. For this purpose, the first connecting part includes a first magnetic device, and the second connecting part includes a second magnetic device. In the connected position, the first and second magnetic devices magnetically attract and cooperate with each other, specifically assisting the placement of the connecting parts. When the connecting parts are placed together, the magnetic devices exert a magnetic attraction effect along the closing direction, generating a magnetic attraction force along the closing direction that attracts the connecting parts together. The magnetic devices can be formed, for example, by permanent magnets. However, it is also possible for one of the magnetic devices to be a permanent magnet and the other to be a magnetic armature, i.e., a passive magnetic element.

[0024] In one embodiment, when the first connecting part and the second connecting part are tilted relative to each other, for example, when the connecting parts are disengaged from each other, the second region and / or the third region of the second base body are configured to move closer to the first base body in the closing direction and narrow the empty space. For example, when tilted in this manner, the third region of the second base body can move out of contact with the form-engagement portion and into the empty space. This allows the connecting parts to be tilted relative to each other.

[0025] In one embodiment, the first base body has an insertion opening into which the third region of the second base body can project when the second connecting part tilts relative to the first connecting part in the closing direction. Specifically, the insertion opening can be formed in a front region of the first base body (based on the engagement direction) and can be formed as a recess in the first base body, for example. When the connecting parts tilt relative to each other (during connection or disconnection), a front edge portion of the second base body, in particular, which forms the third region, can project into the insertion opening.

[0026] The insertion opening may be formed, for example, as a recessed portion in the bottom surface of the first base body. In this case, the insertion opening may be adjacent to the bottom surface but recessed from the bottom surface, thereby recessing in the closing direction. The second base body may contact the bottom surface in a first region at the coupling position. Specifically, the insertion opening may extend below the at least one engaging protrusion, thereby providing a space in the region of the at least one engaging protrusion. In the coupling position, the second region of the second base body is spaced from the space (based on the closing direction), thereby forming the empty space. The third region of the second coupling component may project into the empty space, enabling the coupling device to be closed or opened not only when the coupling components are placed on each other but also when the coupling components are removed from each other.

[0027] Generally, a gap between the engagement portion of the second connecting part and the at least one engagement protrusion of the first connecting part can facilitate the relative tilting of the connecting parts to establish or release the connection. Furthermore, the free space between the second region of the second base body and the first base body also facilitates tilting in that the third region of the second base body can slide out of the form-fitting portion and enter the free space after a slight actuation in the opposite direction to the engagement direction and then a tilting movement.

[0028] The entry opening can be configured as a recess or a through opening in the first base body.

[0029] The form-engaging portion may be formed by, for example, a step on which the second base body rests at the coupling position. Specifically, the form-engaging portion may be a surface portion that supports the second base body and faces perpendicular to the closing direction or obliquely to the closing direction.

[0030] In another embodiment, the form-engaging portion may be formed as an engagement opening, for example, in the form of a notch. The form-engaging portion provides support to the first base body perpendicular to the engagement direction, i.e., along the closing direction, so that the connecting parts are unlikely to easily tilt relative to each other unintentionally in the connected position under load, but are instead supported by the form-engaging portion so as to resist (unintentional) tilting.

[0031] In one embodiment, the form-fitting portion is spaced apart from the at least one engagement protrusion along the closing direction. The form-fitting portion may extend above or below the at least one engagement protrusion along the closing direction.

[0032] Additionally or alternatively, the form-engaging portion may be spaced apart from the at least one engaging protrusion along the engagement direction. That is, the form-engaging portion is located at a different position from the at least one engaging protrusion with respect to the engagement direction. Specifically, the form-engaging portion may be located forward of the at least one engaging protrusion in the engagement direction. The form-engaging portion may be located radially outward of the at least one engaging protrusion, particularly in the case of an advantageous rotatable configuration. In this way, when a load force acts between the connecting parts, the second base body can contact the form-engaging portion with a suitable lever, and thus such form-engaging portion can provide suitable support that prevents the connecting parts from tilting relative to each other.

[0033] In one embodiment, the first base body has a support portion firmly formed on the first base body, and at the coupling position, the second base body is supported by the support portion that absorbs a load along the engagement direction. The second base body may, for example, form an edge portion that is in support contact with the support portion when a load is applied in the engagement direction. The edge portion may, for example, be formed in a front region of the second base body. Also, the edge The support portion may extend around the periphery of the second base body. The support portion is formed in a front region of the first connecting component with respect to the engagement direction. This allows the support portion to support the second base body in the engagement direction. In other words, when a load is applied from the second connecting component to the first connecting component in the engagement direction, the edge portion is pressed against the support portion, and the edge portion is supported by the support portion. Therefore, in the connected position, the edge portion of the second base body can contact the support portion of the first base body of the first connecting component, thereby allowing the load force to be guided from the second connecting component to the first connecting component.

[0034] In this case, it is possible to consider a configuration in which the edge portion always contacts the support portion in the engagement direction at the connecting position, or a configuration in which the edge portion does not contact the support portion in the engagement direction when no load is applied, but rather contacts the support portion only when the connecting parts are mutually loaded.

[0035] Advantageously, force can be transmitted from the second connecting component to the first connecting component via the support portion and the support portion's support of the edge portion of the second base body. For example, if the connecting device is configured as a strap fastener, the load direction acting between the connecting components when the connecting device is used as intended may be along the engagement direction. As a result, when a load is applied, the load is applied to the engagement portion in the engagement direction with the at least one engagement protrusion. In this case, the edge portion of the second base body is in support contact with the support portion, and the force acting in the engagement direction is dissipated through the contact of the edge portion with the support portion. The at least one engagement protrusion particularly functions to ensure the connection between the connecting components by providing support along the closing direction. The load force in the engagement direction is primarily absorbed and dissipated via the support portion.

[0036] In one embodiment, the support portion is curved in an arc shape on a cross-sectional plane perpendicular to the closing direction. That is, the edge portion may also be curved in an arcuate shape, and advantageously the arcuate shape of the edge portion is complementary to the arcuate shape of the support portion, so that the edge portion may come into surface contact with the support portion.

[0037] In one embodiment, the support portion is spaced apart from the at least one engagement protrusion along the closing direction. The support portion may extend above or below the at least one engagement protrusion along the closing direction.

[0038] Additionally or alternatively, the support portion may be spaced apart from the at least one engagement protrusion along the engagement direction. That is, the support portion is located at a different position from the at least one engagement protrusion with respect to the engagement direction. Specifically, the support portion may be located forward of the at least one engagement protrusion in the engagement direction. As a result, the support portion is located radially outward from the at least one engagement protrusion. In this way, when a load force acts between the connecting parts, the support portion can provide suitable support in that the second base body can contact the support portion with suitable leverage.

[0039] In one embodiment, the support portion is formed by a surface portion parallel to the closing direction or inclined relative to the closing direction. The support portion is firmly formed on the first base body of the first connecting part. Under load, the support portion of the first connecting part contacts the second base body of the second connecting part, thereby making it possible to absorb and release the load force acting in the engagement direction in a suitable manner.

[0040] In one embodiment, the second connecting part can be twisted around the closing direction relative to the first connecting part in the connecting position. This allows for angular tolerance when attaching the connecting parts to each other. Also, when the connecting parts are in the connecting position, the second connecting part can be twisted relative to the first connecting part. During the twisting, the engagement portion and the at least one engagement protrusion maintain their engagement. Furthermore, during the twisting, the (later described) of the first base body The blocking of the engagement by the blocking portion is also maintained, so that even if the connecting parts are twisted relative to each other around the closing direction at the connecting position, the connecting parts will not come off from each other.

[0041] The ability of the connecting parts to rotate relative to one another in the connected position may allow any rotational movement through any angle. However, it is also conceivable to limit the movement of the connecting parts relative to one another, for example by means of a stop, to a predetermined rotational angle, preferably greater than 10°, more preferably greater than 20°, and very preferably greater than 45° or even greater than 90°.

[0042] In one embodiment, the first connecting part has a block part firmly attached to the first base body, and the block part is configured to cooperate with the second connecting part to block engagement of the engaging part with the at least one engaging protrusion in a direction opposite to the engagement direction when in the connecting position. The second connecting part is twistable relative to the first connecting part around the closing direction when in the connecting position. During twisting, the engagement of the engaging part with the at least one engaging protrusion and the blocking of the engagement by the block part are maintained. The second connecting part can be tilted relative to the first connecting part to release the block in the direction opposite to the engagement direction, thereby allowing the first connecting part and the second connecting part to be disengaged from each other and the at least one engaging part to be disengaged from the engaging protrusion.

[0043] The coupling parts are placed together in the closing direction, and this placement is magnetically assisted by the magnetic devices of the coupling parts, which magnetically attract the coupling parts together when attached and magnetically hold them together in the coupled position.

[0044] When the connecting parts are placed together, the engaging portion of the second connecting part engages with the at least one engaging protrusion of the first connecting part in the engaging direction transverse to or oblique to the closing direction, thereby forming a form-fit or friction-fit connection between the connecting parts at the connecting position, and the connecting parts are firmly held together by the engagement of the engaging portion with the at least one engaging protrusion.

[0045] The blocking portion of the first connecting part, which is firmly formed on the first base body of the first connecting part, cooperates with the corresponding portion of the second connecting part in a blocking manner in the opposite direction to the engagement direction, so that the engaging portion cannot move relative to the at least one engaging protrusion in the opposite direction to the engagement direction, at least unless this blocking is released, thereby ensuring engagement between the engaging portion of the second connecting part and the at least one engaging protrusion of the first connecting part at the connected position. In other words, the blocking action of the blocking portion blocks the engagement of the engaging portion with the at least one engaging protrusion, thereby fixing the connecting parts to each other at the connected position.

[0046] Due to the magnetic interaction between the magnetic devices, the connecting parts are held together in the connecting position by being blocked in the direction opposite to the engagement direction by the blocking portion of the first connecting part, so that the connecting parts cannot be separated from each other by a (simple) sliding movement in the direction opposite to the engagement direction.

[0047] Rather, to separate the connecting parts, it is necessary to tilt the connecting parts relative to one another and move the second connecting part relative to the first connecting part in a tilting plane extending between the closing direction and the engaging direction, so that the second connecting part can move in the opposite direction to the engaging direction relative to the blocking part. By tilting the second connecting part relative to the first connecting part, the blocking action of the blocking part can be released, and the blocking part can be released. This allows the second connecting component to move beyond the engaging portion, thereby disengaging the engaging portion of the second connecting component from the at least one engaging protrusion of the first connecting component.

[0048] The blocking action of the blocking portion firmly attached to the first base body of the first connecting component ensures that the second connecting component cannot move linearly in the direction opposite to the engagement direction, whereas to disengage the connecting components from each other, the second connecting component must be tilted on the tilting plane extending in the closing direction and the engagement direction. This tilting movement may be performed around a predetermined tilting axis. However, the tilting movement may also be performed along a curved movement path located on the tilting plane. As a result of the tilting movement, the second connecting component tilts relative to the first connecting component. The tilting movement may be superimposed with a linear movement in the direction opposite to the engagement direction and / or the closing direction.

[0049] The connecting parts can be disengaged by tilting them relative to each other. However, the connection between the connecting parts is not established by a straight closing movement, but by placing the connecting parts on each other and engaging with each other with a tilting or swinging movement. When establishing the connection, the second connecting part can be tilted relative to the first connecting part, allowing the engaging portion of the second connecting part to engage with the at least one engaging protrusion of the first connecting part.

[0050] When tilting the connecting parts to disengage them from each other, the third region of the second base body is moved slightly in the direction opposite to the engagement direction as part of the clearance, thereby releasing the second base body from the interaction with the form-engaging portion of the first base body. A clearance that allows a (slight) displacement movement of the second connecting part in the direction opposite to the engagement direction may be provided between the second connecting part and the block portion of the first connecting part, or a clearance that allows a (slight) tilt movement and subsequent displacement movement of the second connecting part in the direction opposite to the engagement direction may be provided between the second connecting part and the at least one engaging protrusion. As a result of movement within the clearance range, the third region slides off the form-engaging portion, which is formed, for example, in the form of a step, and disengages from the form-engaging portion, for example. This allows the connecting parts to be tilted (more) toward each other, thereby allowing the connecting parts to be disengaged from each other.

[0051] A depth of the engaging protrusion along the engagement direction may be set to be deeper than a depth of a contact surface formed by the form-engaging portion along the engagement direction, such that after the third region first slides out of the form-engaging portion, the engaging portion of the second connecting component disengages from the at least one engaging protrusion of the first connecting component by further moving the third region in the opposite direction to the engagement direction.

[0052] In one embodiment, the second connecting part has a block element that is firmly attached to the second base body and cooperates with the block portion of the first connecting part. An element is formed on the second base body and protrudes, for example, from a base surface of the second base body along the closing direction. In the coupled position, the blocking element interacts with the blocking portion of the first coupling component, blocking movement of the coupling components in the direction opposite to the engagement direction. However, by tilting the coupling components relative to each other, the blocking element can be lifted above the blocking portion. This releases the block, and by tilting the coupling components and simultaneously moving them relative to each other in the direction opposite to the engagement direction, the engagement portion of the second coupling component and the at least one engagement protrusion of the first coupling component can be disengaged, allowing the coupling components to be removed from each other.

[0053] Preferably, in the coupled position, the blocking element is twistable relative to the blocking part about the closing direction, and upon twisting, blocking of the engagement of the engagement part with the at least one engagement projection is maintained. For example, the blocking element may be cylindrical for this purpose.

[0054] In one embodiment, the first base body has a recess at least partially defined by the block portion. In the coupling position, the block element is disposed in the recess, thereby blocking the engagement of the engagement portion with the at least one engagement protrusion in a direction opposite to the engagement direction. The recess may be formed, for example, as a depression in the bottom surface of the first base body of the first coupling component. That is, the recess is molded into the bottom surface. When the coupling components are placed together, the block element engages with the recess, thereby pressing the second coupling component against the at least one engagement protrusion of the first coupling component.

[0055] In one embodiment, the recess (in a cross-sectional plane perpendicular to the closing direction) is defined by at least one boundary wall realizing the blocking portion and extending along a circular arc. The recess may, for example, have a circular basic shape, with the at least one boundary wall extending in an arc along a (virtual) circle centered on a given axis.

[0056] For example, the recess is defined by two curved boundary walls that together form the blocking portion and receive the blocking element of the second connecting part between them in the connecting position, thereby blocking movement of the second connecting part relative to the first connecting part in the direction opposite to the engagement direction. The at least one boundary wall is, for example, arranged perpendicular to the bottom surface to provide a support surface for the blocking element, such that when a load is applied, the blocking element is supported by the boundary wall, thereby blocking the blocking element relative to the first connecting part.

[0057] In one embodiment, the block portion has a rising slope, and the rising slope is configured to raise the block when the second connecting part tilts relative to the first connecting part. The second connecting part is configured to guide the elements in a direction opposite to the engagement direction. For example, when the connecting parts tilt relative to each other, the block element of the second connecting part can come into contact with the rising slope. This allows the block element to climb up the rising slope, allowing the block element to move beyond the blocking part. Therefore, such a rising slope can make it easier for the connecting parts to be disengaged from each other.

[0058] In one embodiment, the second connecting part can be lifted from the first connecting part and tilted in the opposite direction of the closing direction relative to the first connecting part on the side opposite to the at least one engagement protrusion. In the coupled position, the second connecting part engages with the at least one engagement protrusion of the first base body of the first connecting part by the engagement portion firmly formed on the second base body, and this engagement occurs in a front region of the second connecting part as viewed from the engagement direction. In the coupled position, the second connecting part can be tilted relative to the first connecting part by lifting the second connecting part from the first connecting part in a rear region as viewed from the engagement direction in the direction opposite to the closing direction, thereby releasing the blocking action of the blocking portion of the first connecting part. This makes it possible to move the second connecting part relative to the blocking portion of the first connecting part, and the engagement portion can be disengaged from the at least one engagement protrusion in the direction opposite to the engagement direction.

[0059] For ease of handling by the user, the second connecting part may have an actuating part that can be actuated by the user to tilt the second connecting part relative to the first connecting part. The actuating part may be formed, for example, by a tab in the rear region of the second connecting part, so that the user can pull the tab to lift the second connecting part at its rear region away from the first connecting part in the direction opposite to the closing direction. However, the actuating part may also be formed, for example, by a gripping part, such as a concave grip, which the user can grasp to tilt the second connecting part relative to the first connecting part.

[0060] In one embodiment, the at least one engagement protrusion is curved in an arc shape centered on the closing direction. Therefore, when one engagement protrusion is provided, the engagement protrusion extends in an arc shape centered on the closing direction. For example, when multiple engagement protrusions are provided, each engagement protrusion may extend in an arc shape centered on the closing direction. Additionally or alternatively, the engagement protrusions may be aligned along a circumferential direction oriented around the closing direction, whereby the engagement protrusions are aligned along an arc-shaped line and jointly establish engagement with the engagement portion of the second connection component when the connection components are in the connection position.

[0061] The at least one engagement protrusion extends at an angle of less than 180°, preferably less than 150°, about the closing direction so that the engagement portion can engage with the at least one engagement protrusion in the engagement direction.

[0062] Preferably, the at least one engagement protrusion forms an undercut in the closing direction, i.e., the at least one engagement protrusion projects from a corresponding portion of the first connecting part transversely to the closing direction, thereby forming an undercut in the closing direction.

[0063] The undercut may be formed by a surface extending perpendicular to the closing direction or obliquely (at an acute or obtuse angle) to the closing direction.

[0064] Similarly, the engaging portion of the second connecting part preferably also forms an undercut in the closing direction, i.e., the engaging portion is an undercut in the closing direction in that it protrudes from the corresponding portion of the second connecting part so as to cross the closing direction.

[0065] Again, the undercut may be formed by a surface extending perpendicular to the closing direction or obliquely (at an acute or obtuse angle) to the closing direction.

[0066] In one embodiment, the engagement portion extends in a circumferential direction around the closing direction. The engagement portion may be provided on a pin element and protrude from the pin element so as to cross the closing direction, for example.

[0067] For example, the engaging portion is rotationally symmetrical with respect to the closing direction. This allows the engaging portion to engage with the at least one engaging protrusion of the first connecting component regardless of the rotational position of the second connecting component relative to the first connecting component, so that engagement exists between the engaging portion and the at least one engaging protrusion at any rotational position of the second connecting component relative to the first connecting component. This allows the connecting components to be twisted relative to each other without disengaging the engaging portion from the at least one engaging protrusion.

[0068] In one embodiment, the second base body of the second connecting part has a base portion.

[0069] In one embodiment, the base portion may have the engaging portion formed on the base portion, for example, on the periphery of the base portion, so that the engaging portion engages with the at least one engaging protrusion of the first connecting component.

[0070] In other embodiments, the engagement portion is spaced apart from the base portion along the closing direction, i.e., the engagement portion is spatially separated from the base portion in that, for example, the base portion extends along a first plane, while the engagement portion extends along a second plane that is spaced apart from the first plane along the closing direction.

[0071] When the engagement portion is physically separated from the base portion, the engagement portion may be formed, for example, on a pin element protruding from the base portion in the closing direction, where the engagement portion protrudes from the pin element in the engagement direction, thereby forming an undercut, which allows the engagement portion to engage with the at least one engagement protrusion of the first connecting part in a form-fit or friction-fit manner.

[0072] The engagement portion may, for example, be formed circumferentially on the pin element, thereby providing a mushroom-shaped engagement element that can engage with the at least one engagement protrusion of the first connecting part in any rotational position so as to connect the connecting parts together and hold them together in the connected position.

[0073] When the engaging portion is spatially separated from the base portion, the base portion can extend radially beyond the engaging portion in the closing direction, i.e., can protrude radially beyond the engaging portion. That is, the engaging portion is located radially inward, while the outer edge of the base portion is located radially outward of the engaging portion. This allows the base portion to favorably support the second connecting component with the first connecting component when the connecting components are in their connecting position.

[0074] In one embodiment, for example, the base portion is disk-shaped. The basic shape of the base portion may be, for example, cylindrical with a circular cross section.

[0075] For example, the base portion may be formed with a fastening portion, and the fastening portion may be used to connect a strap to the second connecting part.

[0076] In one embodiment, the base portion has a base surface, and the first base body has a bottom surface, the base surface and the bottom surface each extending perpendicular to the closing direction, and in the coupled position, the base surface of the base portion of the second coupling component and the bottom surface of the first base body of the first coupling component face each other.

[0077] For example, in the coupled position, contact may exist between the base surface and the bottom surface, such that when the coupled parts are rotated or twisted relative to each other around the closing direction, the base surface and the bottom surface move while sliding relative to each other.

[0078] However, this is not necessarily the case. It is also conceivable that there is a gap between the base surface and the bottom surface (i.e., they are not in contact) at the connection position.

[0079] In one embodiment, the base portion can be tilted relative to the first connecting component about a tilting axis perpendicular to the closing direction and the engaging direction to tilt the connecting components relative to each other. That is, by tilting the base portion relative to the first base body of the first connecting component about the tilting axis, the connecting components tilt and disengage from each other. The tilting axis can be formed by a contact line between the base portion and the first base body. However, it can also be considered that the tilting axis corresponds to a virtual line extending within or outside the base portion, which corresponds to a line about which the base portions rotate relative to each other when the connecting components tilt.

[0080] In one embodiment, the at least one engaging protrusion has, for example, a sliding slope that functions as a guide slope for guiding the connecting parts so that the connecting parts can easily, preferably almost automatically, transition into engagement with each other when the connecting parts are placed on each other. Preferably, the sliding slope is configured to guide the second connecting part on the at least one engaging protrusion along the closing direction when the second connecting part is placed on the first connecting part, thereby shifting the second connecting part in the direction opposite to the engagement direction relative to the first connecting part and allowing it to pass over the at least one engaging protrusion. After passing over, the second connecting part can be engaged with the at least one engaging protrusion of the first connecting part in the engagement direction. In other words, the second connecting part is guided relative to the first connecting part so as to pass over the at least one engaging protrusion by sliding on the at least one engaging protrusion. The engaging portion of the second connecting component passes through the at least one engaging protrusion of the first connecting component, and can thereby engage with the at least one engaging protrusion in the engaging direction.

[0081] In one embodiment, the strap fastener comprises a connecting device of the type described above, in particular, the second connecting part may be connected to a strap, which may be fixed and non-adjustable to the second connecting part, or may be adjustably disposed on the second connecting part.

[0082] The first connecting part may also be connected to a strap, but may also be fixedly arranged on a corresponding assembly, for example a textile or other object.

[0083] In one embodiment, when the connecting device is used in a strap fastener, the first connecting part has two engaging protrusions that are spaced apart transversely to the closing direction and the engaging direction so that the strap can be guided between the engaging protrusions at the connecting position between the first connecting part and the second connecting part, i.e., the strap is received between the engaging protrusions, and the second connecting part is supported on both sides of the strap relative to the first connecting part by the engaging protrusions.

[0084] In another application, an object fastening device may comprise a connecting device of the type described above for fastening an object to an assembly, where the object may be placed on one of the connecting parts, e.g., integral with the connecting part, while the other connecting part is placed on the assembly, whereby the connecting parts can be connected together to fasten the object to the assembly.

[0085] The following potential uses are intended to illustrate the wide range of uses for the present coupling device and are not intended to limit the invention, and in particular are not intended to be exhaustive. - helmet fixings; -Horse reins; -Removable (chest) pouch; - Bags, backpacks; -For roll tops, with (elastic) strap closures; - Jacket fastenings (e.g. sleeve, collar and button placket fastenings, shirt sleeve fastenings, etc.); -Motorhome roller blinds, mobile home privacy screens; -covering; -Awnings, tarps, camping tents, tent guy ropes; - Fastening and closing panniers and saddlebags (motorcycles, motorcycles); - Securing luggage and cargo, as well as securing bicycles and strollers on public transport; -Sorting and securing system for personnel in vehicles; -Strap fastenings, restraint systems and fastening devices for backpacks; -Chest strap, hip strap, shoulder strap; - Detachable handle or carrying strap on the bag; - Foldable sunshades, for example for prams; - Movable and detachable or releasable connection of the backpack carrying straps - Clothes hanger hooks; - for mounting furniture, e.g. pedestal elements; -Sleeping bags, sleeping mats, yoga mats (to roll up and fasten); -Towel rack -key ring -belt -Tool belt with tool hook - Detachable carrying straps for tools, gardening equipment, etc., handles for bags and electronics; - Gloves, shoes, golf bags (to close or fasten); - Mosquito repellents for prams and tents; - Luggage straps, for example for securing items in a motorcycle basket; and -For motorcycle parts and accessories (speedometers, lights, computers, electronic devices, etc.); It can be used for.

[0086] The idea underlying the invention will now be explained in more detail with reference to an embodiment shown in the drawings. [Brief explanation of the drawings]

[0087] [Figure 1] 1 illustrates an embodiment of a coupling device. [Figure 2A] FIG. 1 is an exploded view of a coupling device. [Figure 2B] FIG. 10 is another exploded view from another perspective. [Figure 3A] FIG. 10 is a view of the first connecting part of the connecting device; [Figure 3B] FIG. 10 is another view of the first connecting part. [Figure 4A] FIG. 2 is a plan view of the first connecting component. [Figure 4B] FIG. 10 is a view from below of the first connecting part. [Figure 4C] FIG. 4C is a cross-sectional view taken along line GG shown in FIG. 4B. [Figure 5A] FIG. 10 is a view of the second connecting part with the strap disposed thereon. [Figure 5B] FIG. 10 is another view of the second connecting part with the strap disposed thereon. [Figure 6A] FIG. 10 is a view from below of the second connecting part. [Figure 6B] FIG. 10 is a plan view of the second connecting component. [Figure 6C] FIG. 6C is a cross-sectional view taken along line II shown in FIG. 6B. [Figure 7A] 10 is a diagram of a connecting device when connecting connecting parts together. FIG. [Figure 7B] FIG. 7B is a cross-sectional view taken along line BB shown in FIG. 7A. [Figure 8A] FIG. 10 is a view of the coupling device when further closed. [Figure 8B] FIG. 8B is a cross-sectional view taken along line CC shown in FIG. 8A. [Figure 9A] FIG. 10 is a view of the coupling device when further closed. [Figure 9B] FIG. 9B is a cross-sectional view taken along line DD shown in FIG. 9A. [Figure 10A] FIG. 10 is a view of the coupling device when further closed. [Figure 10B] FIG. 10B is a cross-sectional view taken along line EE shown in FIG. 10A. [Figure 10C] FIG. 10B is a cross-sectional view taken along line LL shown in FIG. 10A. [Figure 11A] 1 shows a view of the coupling device in the coupling position of the coupling parts; [Figure 11B] FIG. 11B is a cross-sectional view taken along line JJ shown in FIG. 11A. [Figure 11C] FIG. 11C is a cross-sectional view taken along line KK shown in FIG. 11B. [Figure 11D]FIG. 11C is a cross-sectional view taken along line FF shown in FIG. 11B. [Figure 11E] FIG. 11B is an enlarged cross-sectional view of FIG. [Figure 12A] 10 is a plan view of the coupling device with the second coupling part in a twisted position relative to the first coupling part. FIG. [Figure 12B] FIG. 12B is a side view of the arrangement shown in FIG. 12A. [Figure 12C] FIG. 12B is a cross-sectional view taken along line NN in FIG. 12A. [Figure 12D] FIG. 2 is a side view of the coupling device from an oblique rear view. [Figure 12E] FIG. [Figure 12F] FIG. 12B is a cross-sectional view taken along line MM shown in FIG. 12E. [Figure 13A] FIG. 10 is a view of a second connecting part in another embodiment of the connecting device. [Figure 13B] FIG. 10 is another perspective view of the second connecting part. [Figure 14A] FIG. 10 is a view from below of the second connecting part. [Figure 14B] FIG. 10 is a plan view of the second connecting component. [Figure 14C] FIG. 14C is a cross-sectional view taken along line EE shown in FIG. 14B. [Figure 15A] 14A to 14C. FIG. 14B is a diagram of a first connecting part on which the second connecting part of FIGS. 13A, 13B, and 14A to 14C can be placed. [Figure 15B] FIG. 10 is another view of the first connecting part. [Figure 16A] FIG. 10 is a view from below of the first connecting part. [Figure 16B] FIG. 2 is a plan view of the first connecting component. [Figure 16C] FIG. 16C is a cross-sectional view taken along line FF shown in FIG. 16B. [Figure 17A] FIG. 10 is a view of the coupling device during closing. [Figure 17B] FIG. 17B is a cross-sectional view taken along line AA shown in FIG. 17A. [Figure 18A] FIG. 10 is a view of the coupling device when further closed. [Figure 18B]FIG. 18B is a cross-sectional view taken along line BB shown in FIG. 18A. [Figure 19A] FIG. 10 is a view of the coupling device when further closed. [Figure 19B] FIG. 19B is a cross-sectional view taken along line CC shown in FIG. 19A. [Figure 20A] 1 shows a view of the coupling device in the coupling position of the coupling parts; [Figure 20B] FIG. 20B is a cross-sectional view taken along line DD shown in FIG. 20A. [Figure 20C] FIG. 20C is a cross-sectional view taken along line GG shown in FIG. 20B. [Figure 20D] FIG. 20C is a cross-sectional view taken along line HH shown in FIG. 20B. [Figure 21] 10A and 10B show still another embodiment of the coupling device. [Figure 22A] FIG. [Figure 22B] FIG. 10 is another exploded perspective view of the coupling device. [Figure 23A] FIG. 10 is a view of the first connecting part of the connecting device; [Figure 23B] FIG. 10 is another view of the first connecting part. [Figure 24A] FIG. 2 is a plan view of the first connecting component. [Figure 24B] FIG. 10 is a view from below of the first connecting part. [Figure 24C] FIG. 24C is a cross-sectional view taken along line FF shown in FIG. 24B. [Figure 25A] FIG. 10 is a view of the second coupling part of the coupling device. [Figure 25B] FIG. 10 is another view of the second connecting part. [Figure 26A] FIG. 10 is a view from below of the second connecting part. [Figure 26B] FIG. 10 is a plan view of the second connecting component. [Figure 26C] FIG. 26C is a cross-sectional view taken along line GG shown in FIG. 26B. [Figure 27A] FIG. 10 is a view of the coupling device during closing. [Figure 27B] 27B is a cross-sectional view of the coupling device taken along line AA shown in FIG. 27A. [Figure 28A]FIG. 10 is a view of the coupling device when further closed. [Figure 28B] FIG. 28B is a cross-sectional view taken along line BB shown in FIG. 28A. [Figure 29A] FIG. 10 is a view of the coupling device when further closed. [Figure 29B] FIG. 29B is a cross-sectional view taken along line CC shown in FIG. 29A. [Figure 30A] 1 shows a view of the coupling device in the coupling position of the coupling parts; [Figure 30B] FIG. 30B is a cross-sectional view taken along line OO shown in FIG. 30A. [Figure 30C] FIG. 30C is a cross-sectional view taken along line AA shown in FIG. 30B. [Figure 30D] FIG. 30C is a cross-sectional view taken along line QQ shown in FIG. 30B. [Figure 31A] FIG. 10 is an exploded view showing yet another embodiment of the coupling device. [Figure 31B] 29C is a cross-sectional view corresponding to the cross-sectional view shown in FIG. 29B of the coupling device during closure. [Figure 31C] 30C is a cross-sectional view corresponding to the cross-sectional view of FIG. 30B, of the coupling device in the coupled position of the coupling parts. [Figure 32] FIG. 10 illustrates potential uses of the coupling device. [Figure 33] 10A and 10B show other potential uses of the coupling device. [Figure 34] 10A and 10B show further potential uses of the coupling device. [Figure 35] 10A and 10B show further potential uses of the coupling device. [Figure 36] 10A and 10B show further potential uses of the coupling device. [Figure 37] 10A and 10B show further potential uses of the coupling device. [Figure 38] 10A and 10B show further potential uses of the coupling device. [Figure 39] 10A and 10B show further potential uses of the coupling device. [Figure 40] 10A and 10B show further potential uses of the coupling device. [Figure 41]10A and 10B show further potential uses of the coupling device. [Figure 42] 10A and 10B show further potential uses of the coupling device. [Figure 43] 10A and 10B show further potential uses of the coupling device. [Figure 44] 10A and 10B show further potential uses of the coupling device. [Figure 45] 10A and 10B show further potential uses of the coupling device. [Figure 46] 10A and 10B show further potential uses of the coupling device. [Figure 47] 10A and 10B show further potential uses of the coupling device. [Figure 48] 10A and 10B show further potential uses of the coupling device. [Figure 49] 10A and 10B show further potential uses of the coupling device. [Figure 50] 10A and 10B show further potential uses of the coupling device. [Figure 51] 10A and 10B show further potential uses of the coupling device. [Figure 52] 10A and 10B show further potential uses of the coupling device. [Figure 53] 10A and 10B show further potential uses of the coupling device. [Figure 54] 10A and 10B show further potential uses of the coupling device. [Figure 55] 10A and 10B show further potential uses of the coupling device. [Figure 56] 10A and 10B show further potential uses of the coupling device. [Figure 57] 10A and 10B show further potential uses of the coupling device. [Figure 58] 10A and 10B show further potential uses of the coupling device. DETAILED DESCRIPTION OF THE INVENTION

[0088] In one exemplary embodiment shown in Figures 1 to 12A-12F, the connecting device 1 comprises a first connecting part 2 (the so-called female part) and a second connecting part 3 (the so-called male part) that is placed against the first connecting part 2.

[0089] The connecting parts 2, 3 can generally be placed against one another along the closing direction X. The connecting parts 2, 3 each comprise a magnetic device 21, 31 in the form of a permanent magnet (or one in the form of a permanent magnet and the other in the form of a magnetic armature), which cooperate by magnetic attraction and attract the connecting parts 2, 3 against one another along the closing direction X.

[0090] The connecting parts 2 and 3 may be arranged in a direction deviated from the closing direction X, for example, obliquely to the closing direction X. The magnetic devices 21 and 31 cooperate by magnetic attraction along the closing direction X, and attract the connecting parts 2 and 3 to each other along the closing direction X.

[0091] As can be seen from the exploded views of Figures 2A and 2B and the individual views of Figures 3A, 3B and 4A-4C, the first connecting part 2 has a base body 20 which forms a receiving opening 23 for receiving the second connecting part 3. The base body 20 is provided with a strap receptacle 22 in the form of a web and an opening adjacent to the web, to which the strap 5 is attachable or to which the strap receptacle 22 is attached. Behind the receiving opening 23, the base body 20 forms a fastening opening 25 for accommodating the magnetic device 21.

[0092] The receiving opening 23 is formed as a recess in the base body 20. Inside the receiving opening 23, a bottom surface 230 is formed in the form of a flat surface extending perpendicular to the closing direction X. When the second connecting component 3 is inserted into the receiving opening 23, it comes into surface contact with the bottom surface 230, thereby establishing the connection between the connecting components 2, 3.

[0093] A recess 231 in the form of a depression is formed in the bottom surface 230. As will be described later, a block element 303 of the base part 300 of the second connecting part 3 engages in the recess 231 when the connecting parts 2, 3 are in the connecting position.

[0094] The receiving opening 23 has a front end defined by a support portion 233. The support portion 233 functions as a support and load-bearing means for the second connecting part 3 in the connected position. An entry opening 232 is formed between the support portion 233 and the bottom surface 230. As can be seen in FIG. 10B and described later, the entry opening 232 serves to facilitate the establishment and separation of the connection between the connecting parts 2, 3 in that the edge portion 305 of the base portion 300 of the second connecting part 3 can protrude into the entry opening 232 not only when the connection between the connecting parts 2, 3 is established but also when the connection is separated.

[0095] The entry opening 232 is formed as a recess in the bottom surface 230 and is adjacent to the bottom surface 230 so as to be located between the support portion 233 and the bottom surface 230. At the transition between the entry opening 232 and the bottom surface 230, an inclined transition surface 237 is formed. The inclined transition surface 237 serves as a guide for the second connecting part 3 when establishing a connection as well as when disconnecting the connection.

[0096] The rigidly formed base body 20 is provided with engagement projections 240, 241 on two lateral raised portions 242, 243 rigidly formed on the base body 20. The engagement projections 240, 241 are located above the bottom surface 230 in a height direction H oriented in the closing direction X and serve to establish a form-locking or friction-fitting connection between the connecting parts 2, 3 in the connecting position. The engagement projections 240, 241 are spaced apart from each other in the lateral direction Q. The engagement projections 240, 241 jointly form an engagement device 24 that enables a form-locking or friction-fitting connection with the second connecting part 3. As will be described later, when the base portion 300 of the second connecting part 3 is in the connecting position, the engaging portions 341 formed on the base portion 300 fit between the engaging protrusions 240, 241 and the bottom surface 230, and the front edge 305 is supported by the support portion 233. This allows the connecting parts 2, 3 to be held together securely and reliably.

[0097] The engaging protrusions 240, 241 are formed with sliding slopes 244, 245 that are inclined obliquely in the height direction H, and when the connecting parts 2, 3 are placed together along the closing direction X, the second connecting part 3 is slid in the opposite direction to the engaging direction Y.

[0098] The recess 231 is laterally bounded by arcuate boundary walls 236. The boundary walls 236 jointly realize the block portion of the first connecting part 2 and are aligned perpendicular to the bottom of the recess 231 and to the bottom surface 230. The boundary walls 236 extend in an arcuate manner around a central axis B of the recess 231, which is oriented along the normal direction N of the bottom surface 230.

[0099] A rising slope 235 is formed between the boundary walls 236. The rising slope 235 is located rearward of the support portion 233 in the recess 231, and provides a sliding surface to facilitate sliding of the block element 303 into the recess 231 and removal of the block element 303 from the recess 231.

[0100] The bottom surface 230 extends flat along a plane perpendicular to the normal direction N.

[0101] As shown in the exploded views of Figures 2A and 2B and the individual views of Figures 5A, 5B, and 6A to 6C, the second connecting part 3 is fixedly connected to the strap 4. The second connecting part 3 has a base body 30. The strap 4 is fixedly and non-adjustably disposed on the base body 30 in that the strap 4 is disposed in a strap receiver 32 formed between the base part 300 and the fastening part 301, thereby being fixedly attached to the base body 30.

[0102] The base body 30 may be formed as a single unit with the base portion 300 and fastening portion 301, for example by plastic injection molding, and the strap 4 may be partially overmolded to provide a rigid and non-adjustable connection to the base body 30.

[0103] The base portion 300 has a cylindrical basic shape and forms a base surface 302 on the side that faces the first connecting part 2 (when the connection is made). The base surface is flat and contacts the bottom surface 230 of the receiving opening 23 when the second connecting part 3 is attached to the first connecting part 2.

[0104] From the base surface 302 protrudes a block element 303 which is concentric with the cylindrical base portion 300 and has a circular cross section and serves to engage in a recess 231 in the bottom surface 230 of the base body 20 of the first connecting part 2.

[0105] The block element 303 has a fastening opening 35 formed on its inside, which serves to accommodate a magnetic device 31 of the second connecting part 3, for example in the form of a permanent magnet, in which the magnetic device 31 is fastened.

[0106] The base portion 300, together with the engaging portion 341, forms the engaging device 34 of the second connecting part 3. The engaging portion 341 functions to cooperate with the engaging protrusions 240, 241 of the engaging device 24 of the first connecting part 2, and protrudes under the engaging protrusions 240, 241 when the connecting parts 2, 3 are connected together. This allows the connecting parts 2, 3 to be connected together by form-fit or frictional engagement.

[0107] In the illustrated embodiment, the engagement portion 341 is formed by a peripheral edge of the base portion 300 that protrudes radially beyond the fastening portion 301, thereby forming an undercut that allows the engagement portion 341 to engage with the engagement projections 240, 241 of the first connecting part 2, which also form undercuts, thereby connecting the connecting parts 2, 3 to each other.

[0108] 7A and 7B through 11A to 11D show a connecting method of the connecting device 1. FIG.

[0109] The connecting parts 2, 3 are generally attached to each other along the closing direction X. The magnetic devices 21, 31 magnetically attract and cooperate with each other along the closing direction X, thereby magnetically attracting the connecting parts 2, 3 to each other. The connecting parts 2, 3 can be manually brought close to each other, and once the connecting parts 2, 3 are brought close to each other to a certain extent, the magnetic attractive force automatically draws them into an engaged state, thereby establishing the connection of the connecting device 1. This allows the connecting parts 2, 3 to be placed imprecisely, and the connection is established almost automatically.

[0110] 7A and 7B, when the connecting parts 2, 3 are brought closer to each other, the base part 300 of the base body 30 of the second connecting part 3 comes into contact with the engaging protrusions 240, 241 from above in the closing direction X, as can be seen in Figures 8A and 8B. Since the engaging protrusions 240, 241 are formed with inclined sliding slopes 244, 245, the base part 300 slides on the engaging protrusions 240, 241 in the sliding direction A, and as shown in Figure 8B, the rear edge 304 of the base part 300 comes into contact with the bottom surface 230 inside the receiving opening 23 of the first connecting part 2, making it possible to guide the base part 300 to slide along the bottom surface 230 without the blocking element getting caught early.

[0111] As the base part 300 slides off the engagement protrusions 240, 241, and thus passes the engagement protrusions 240, 241 in the closing direction X, the engagement parts 341 formed on the periphery of the base part 300 slide in the engagement direction Y into engagement with the engagement protrusions 240, 241, assisted by the magnetic attraction of the magnetic devices 21, 31, as can be seen in Figures 9A and 9B and 10A and 10B. This movement (approximately) along the engagement direction Y is magnetically assisted. The engagement can also be assisted by an additional load force (introduced by the strap 4).

[0112] As can be seen in the transition from Figures 10A and 10B to Figures 11A to 11D, when the engagement portion 341 moves in the engagement direction Y into engagement with the engagement protrusions 240, 241, the blocking element 303 slides into the recess 231 of the receiving opening 23 of the first connecting part 2.

[0113] In the connection position shown in Figures 11A to 11E, as can be seen particularly from the cross-sectional view of Figure 11B, the block element 303 is positioned within the recess 231, and the base surface 302 formed on the base portion 300 is in surface contact with the bottom surface 230 within the receiving opening 23 of the first connection part 2.

[0114] In the connected position, the base part 300 is supported by the support part 233 with the (front) edge part 305 facing the support part 233. When a force is applied to the second connecting part 3 from the strap 4, the force is absorbed and released by the support contact of the base part 300 with the support part 233.

[0115] As can be seen from Figures 11C and 11D, the support portion 233 is curved in an arc about the closing direction X to match the curvature of the cylindrical base portion 300, thereby creating contact between the edge portion 305 of the base portion 300 and the support portion 233 along an arc-shaped support line or surface.

[0116] A central portion of the support portion 233 in the lateral direction Q is located between the engaging protrusions 240, 241, and the central portion is spaced apart from the engaging protrusions 240, 241 along the engaging direction Y. On the cross-sectional plane of FIG. 11D , the support portion 233 extends in an arc shape below the engaging protrusions 240, 241 and beyond the engaging protrusions 240, 241, thereby directly supporting the surface of the base portion 300 in the center between the engaging protrusions 240, 241 and also in the region of the engaging protrusions 240, 241.

[0117] In the connected position, the strap 4 on the connecting part 3 is located at approximately the same height as or below the engaging protrusions 240, 241 of the connecting part 2. This prevents the connecting part 3 from tilting within the receiving opening 23 even when a strap force is applied from the strap 4, or only a small tilting moment is generated, and the engaging protrusions 240, 241 fix the position of the connecting part 3 on the connecting part 2, particularly its position along the height direction H.

[0118] In the connected position or when a load is applied between the connecting parts 2 and 3, the strap 4 is located between the raised portions 242 and 243, that is, between the engaging protrusions 240 and 241. As a result, when a force is applied from the strap 4, the strap 4 is supported symmetrically by the engaging protrusions 240 and 241.

[0119] In the coupled position, the magnetic devices 21, 31 cooperate by magnetic attraction to hold the coupling parts 2, 3 in the coupled position.

[0120] Furthermore, the engagement of the block element 303 in the recess 231 blocks relative tangential displacement between the connecting parts 2, 3 in the direction opposite to the engagement direction Y. In the connected position, the block element 303 is positioned in the recess 231, and thus the block element 303 is accommodated between the arc-shaped boundary walls 236 that realize the blocking portion and comes into blocking contact with the boundary walls 236, preventing the block element 303 from moving in the direction opposite to the engagement direction Y relative to the boundary walls 236.

[0121] Due to the rotationally symmetrical shape of the blocking element 303 and the cylindrical shape of the base portion 300, in the coupling position, the connecting part 3 can rotate in the receiving opening 23 of the connecting part 2 along the circumferential direction U (see Figure 1) at any angle around the rotation axis R while maintaining the coupling engagement between the connecting parts 2, 3 and further the blocking of the blocking element 303 in the recess 231.

[0122] Moreover, because such twisting is possible, the connecting parts 2, 3 can be placed relative to each other in any rotational position, so that even if a load is applied from the strap 4, the connecting parts 2, 3 are aligned relative to each other so that the strap 4 remains between the engaging projections 240, 241. As a result, the connecting part 3 is symmetrically supported by the connecting part 2. Because twisting is possible, the connecting parts 2, 3 can be placed relative to each other with a large degree of positional tolerance, making the connection simple and easy.

[0123] 10A to 10C, when the base portion 300 having the front edge portion 305 slides under the engagement protrusions 240, 241, the edge portion 305 protrudes into the insertion opening 232 that is recessed into both the bottom surface 230 and the recess 231. By having the edge portion 305 protrude into the insertion opening 232, the block element 303 can slide into the recess 231 and the engagement between the engagement portion 341 formed on the base portion 300 and the engagement protrusions 240, 241 can be established. Furthermore, this allows the angular range of the opening force applied to the actuating portion 40 (tab) to be widened, making it possible to prevent the edge portion 305 from getting stuck during opening.

[0124] 11B, the front edge 305 of the base part 300 then rests on a form-fitting portion in the form of a step 234 formed between the projection opening 232 and the support part 233 and located at the level of the bottom surface 230. By the base part 230 resting on the step 234, the connecting part 3 receives additional support against tilting relative to the connecting part 2.

[0125] Alternatively, the shape-engaging portion may be formed, for example, by a notch in the support portion 233, and the edge portion 305 of the base portion 300 is supported by the support portion 233 by engaging with the shape-engaging portion so as to resist tilting corresponding to downward movement of the edge portion 305 on the support portion 233 in the closing direction X.

[0126] 11A to 11E, the form-fitting portion in the form of the step 234 provides resistance to tilting, particularly when a load is applied to the strap 4. That is, in the coupled position, a first region 300A of the base body 30 of the second connecting part 3 formed by the rear portion (based on the engagement direction Y) and the block portion 303 rests on the bottom surface 230 of the base body 20 of the first connecting part 2 and is arranged in the recess 231 (see FIG. 11E). In contrast, in the second region 300B formed by the portion adjacent to the engagement direction Y and above the insertion opening 232, the second base body 30 of the second connecting part 3 does not rest on the first base body 20 of the first connecting part 2. The second base body 30 rests on the step 234 by a third region 300C formed by the front edge 305 of the base part 300 adjacent to the second region 300B in the engagement direction Y. This allows a two-point support to be realized in the coupling position, with a free space being formed between these points in the region of the entry opening 232.

[0127] In a loaded state, the base portion 300 is loaded with the edge portion 305 abutting against the support portion 233. This allows the base portion 300 to be held in a manner that reinforces its contact with the step 234.

[0128] To release the connecting parts 2 and 3 from each other, the order of operations shown in FIGS. 7 and 7B through 11A to 11D is essentially reversed. Specifically, to release the connecting parts 2 and 3 from each other, the user operates an actuating portion in the form of a tab 40 (formed by a protruding portion of the strap 4) on the rear side of the second connecting part 3, opposite the engaging protrusions 240 and 241, to lift the rear end of the connecting part 3 from the bottom surface 230, thereby tilting the connecting part 3 from the connected position shown in FIGS. 11A to 11D. As a result, as can be seen in FIGS. 10A and 10B, the front edge portion 305 of the base portion 300 slides off the step 234, and the blocking element 303 lifts out of the recess 231. In this way, the blocking between the connecting parts 2 and 3 in the reverse direction of the engagement direction Y is released, and the connecting part 3 can be pulled out of engagement with the connecting part 2 in the reverse direction of the engagement direction Y, thereby separating the connecting parts 2 and 3 from each other.

[0129] The tilting occurs on a tilting plane perpendicular to the bottom surface 230, i.e., on a tilting plane that is bounded by the closing direction X and the engagement direction Y. The tilting occurs approximately around the tilting axis K (see FIGS. 10A and 10B ), and the connecting part 3 rotates on the tilting plane perpendicular to the tilting axis K, causing the blocking element 303 to lift out of the recess 231. This allows the connecting parts 2, 3 to be moved relatively in the direction opposite to the engagement direction Y, thereby disengaging them from each other.

[0130] In particular, when the coupling parts 2, 3 are to be released from the coupling device 1 while no load is being applied, the coupling parts 2, 3 are tilted relative to one another, in particular, moved relatively in the direction opposite to the engagement direction Y, whereby, as can be seen in Fig. 10B, the front edge portion 305 (forming the third region 300C) of the base portion 300 slides through the step 234 and enters the region of the entry opening 232. As a result, the form-engaging portion formed by the step 234 does not (or no longer resists) the tilting movement, and so the coupling parts 2, 3 can be simply and easily released from one another when tilted by the actuating portion 40.

[0131] 12A to 12F show the coupling device 1 in a state in which the second coupling part 3 is rotated relative to the first coupling part 2. At this time, the second coupling part 3 can be applied to the first coupling part 2 in (any) rotational position, and the engagement part 341 of the second coupling part 3 can engage with the engagement protrusions 240, 241 of the first coupling part 2 in any rotational position. In the coupling position, the second coupling part 3 can be twisted relative to the first coupling part 2 in the circumferential direction U about the rotation axis R, while maintaining the engagement of the engagement part 341 with the engagement protrusions 240, 241 and while keeping the block element 303 engaged in the recess 231.

[0132] When a load is applied such that a strap force acts between the straps 4 and 5 at the connection position of the connection device 1, the strap 4 is positioned between the engagement protrusions 240 and 241, as can be seen in Fig. 1. In this case, since the engagement protrusions 240 and 241 are positioned on the sides of the strap 4, the strap 4 extends between the engagement protrusions 240 and 241 (along the lateral direction Q from the engagement protrusion 240 to the engagement protrusion 241).

[0133] 12A to 12F, when the second connecting part 3 rotates in the circumferential direction U about the rotation axis R relative to the first connecting part 2, the strap 4 may bendably and flexibly deformed to extend over one of the engaging protrusions 240, 241, as can be seen particularly in FIGS. 12B and 12D. When twisted, the strap 4 slides and deforms over one of the engaging protrusions 240, 241 (depending on the direction of rotation). This allows the strap 4 to move over the corresponding engaging protrusion 240, 241.

[0134] 1 in conjunction with, for example, FIG. 6C , the strap 4 emerges from the fastening part 301 on the base part 300 at an exit line 306 that is curved in accordance with the cylindrical shape of the fastening part 301. In the region of the protruding edge of the base part 300 beyond the exit line 306, i.e., outside the fastening part 301, that forms the engagement part 341, the strap 4 is not connected but is instead free to move relative to the base part 300 and in particular can lift off from the base part 300. Therefore, when the connecting part 3 is twisted relative to the connecting part 2, the strap 4 deforms and can slide smoothly over the engagement protrusions 240, 241.

[0135] The exit line 306 is offset radially inward relative to the end face edge 305 of the base part 300, i.e., is radially spaced from the edge 305. The strap 4 therefore emerges from the fastening part 301 along a line that is set back relative to the edge 305.

[0136] It is also possible to rotate the connecting part 3 further from the position shown in Figures 12A to 12F In principle, the connecting part 3 can be rotated to any angle relative to the connecting part 2.

[0137] When a load is applied between the straps 4, 5, the connecting pieces 2, 3 automatically return to the position shown in FIG.

[0138] Furthermore, the connecting part 3 can be attached to or detached from the connecting part 2 at any rotational position.

[0139] In the exemplary embodiment of Figures 1 to 12A-12F, the connecting device 1 provides a strap fastener capable of connecting straps to one another, in which the load direction imposed by these straps in the connected position is essentially oriented along the engagement direction Y.

[0140] In another exemplary embodiment shown in Figures 13A and 13B to 20A-20D, the connecting device 1 is configured as an object fastening device and is used to fasten and fasten an object to a corresponding assembly. The object can be, for example, located on the (second) connecting part 3 or can be integral with the connecting part 3. This allows electrical or electronic devices, such as communication devices or lights, to be attached to a corresponding assembly, such as sports equipment, such as a helmet.

[0141] 13A and 13B and 14A to 14C, the (second) connecting part 3 of the illustrated exemplary embodiment has a rotationally symmetrical shape and forms a base part 300 provided on a cylindrical base body 30. A base surface 302 is formed on the underside of the base part 300, from which protrudes a block element 303 which has a circular cross section and is concentric with the base surface 302.

[0142] A housing section rising from the base section 300 defines a fastening opening 35 for receiving the magnetic device 31 .

[0143] The (second) connecting component 3 shown in Figures 13A and 13B and 14A to 14C can be attached to the (first) connecting component 2 shown in Figures 15A and 15B and 16A to 16C. The (first) connecting component 2 has a base body 20 on which a bottom surface 230 is formed. The bottom surface 230 extends flatly and uniformly on the side of the base body 20 that faces the connecting component 3 (when the connecting components 2 and 3 are attached to each other). When the connecting components 2 and 3 are connected to each other, the base surface 302 of the base portion 300 of the connecting component 3 comes into surface contact with the bottom surface 230.

[0144] As explained with reference to the previous exemplary embodiment, the bottom surface 230 is formed with a recess 231, which serves to receive the block element 303 of the connecting piece 3. Adjacent to the bottom surface 230 is an entry opening 232. The entry opening 232 is located between the bottom surface 230 and a support 233 formed in the front region of the base body 20.

[0145] The raised portions 242, 243 have engagement protrusions 240, 241 firmly formed with the base body 20, which are provided above the bottom surface 230 in the height direction H. At the connection position between the connecting parts 2, 3, an engagement portion 341 formed by a radially protruding periphery of the base portion 300 of the connecting part 3 is received between the bottom surface 230 and the engagement protrusions 240, 241.

[0146] Behind the bottom surface 230, the base body 20 defines a fastening opening 25. In the fastening opening 25, a magnetic device 21 is arranged, which magnetically interacts with the magnetic device 31 of the connecting part 3.

[0147] The method of connecting the connecting parts 2, 3 shown in Figures 17A and 17B to 20A-20D is carried out in the same way as described above for the exemplary embodiment of Figures 1 to 12A-12F.

[0148] 17A and 17B, the connecting parts 2 and 3 are moved toward each other in the closing direction X, which is oriented along the height direction H. The magnetic devices 21 and 31 cooperate by magnetic attraction, attracting the connecting parts 2 and 3 to each other in the closing direction X. As a result, as can be seen in FIGS. 18A and 18B, the connecting part 3 advances onto the engagement protrusions 240 and 241 and slides off the rear ends 246 and 247 of the engagement protrusions 240 and 241. At this time, the rear edge portion 304 of the base portion 300 comes into contact with the bottom surface 230, causing the connecting part 3 to slide along the sliding direction A relative to the connecting part 2. As a result, the base portion 300 moves along the engagement protrusions 240 and 241 until the base portion 300 can pass the engagement protrusions 240 and 241, and the connecting part 3 moves to the position shown in FIGS. 19A and 19B relative to the connecting part 2. The blocking portion is held above the recess 231 so that the connecting parts 2, 3 do not get caught prematurely.

[0149] As the base part 300 passes over the engagement protrusions 240, 241 in the closing direction X, as can be seen in the transition from Figures 19A and 19B to Figures 20A and 20B, the engagement parts 341 formed on the base part 300 slide in the engagement direction Y into engagement with the (rigid) engagement protrusions 240, 241. In this process, the blocking element 303 slides into the recess 231 while being magnetically assisted by the magnetic attraction of the magnetic devices 21, 31.

[0150] 20A to 20D, the base surface 302 of the base portion 300 is placed planarly against the bottom surface 230 of the connecting part 2. The block element 303 is disposed in the recess 231. The front edge portion 305 of the base portion 300 is in contact with the support portion 233. As can be seen in FIG. 19B, the front edge portion 305 also rests on the step 234 between the insertion opening 232 and the support portion 233. The engagement portions 341 formed on the base portion 300 engage with the engagement protrusions 240, 241, thereby holding the connecting part 3 on the connecting part 2 by form-fit or friction-fit. The positions of the connecting parts 2, 3 are fixed by the magnet devices 21, 31, and the block element 303 blocks disengagement in the direction opposite to the engagement direction Y.

[0151] The rotational symmetry of the connecting piece 3 allows it to rotate on the connecting piece 2 in said connecting position.

[0152] Furthermore, the rotational symmetry allows the connecting part 3 to be placed on the connecting part 2 in any rotational position, making the connecting parts 2, 3 easy and convenient to connect to each other.

[0153] To separate the connections 2 and 3, as can be seen in Figure 19B, the connecting part 3 is tilted relative to the connecting part 2 on a tilting plane extending in the closing direction X and the engagement direction Y, so that the engagement part 341 formed by the edge of the base part 300 enters the entry opening 232. This unblocks the blocking element 303 in the recess 231, making it possible to remove the connecting parts 2 and 3 from each other.

[0154] 21 to 30A-30D, a first connecting component 2 has a base body 20 having a receiving opening 23 formed therein. A pin element 340 formed on a base portion 300 of a base body 30 of a second connecting component 3 is inserted into the receiving opening 23, and the circumferential engaging portion 341 of the pin element 340 is engaged with an arc-shaped engaging protrusion 240 on the wall of the receiving opening 23 of the first connecting component 2, thereby attaching the second connecting component 3 to the first connecting component 2.

[0155] In the illustrated exemplary embodiment, the strap 4 is firmly connected to the base body 30 of the connecting piece 3 by a fastening part 301 formed on the base part 300. The base part 300 has a cylindrical and disc-like basic shape and forms a base surface 302 on the side facing the connecting piece 2.

[0156] A mushroom-shaped pin element 340 protrudes from the base surface 302. The pin element 340 carries an engagement portion 341 that extends circumferentially about the closing direction X to implement the engagement device 34. That is, the engagement portion 341 in the illustrated exemplary embodiment is spatially separated from the base portion 300 in that it is spaced apart from the base portion 300 along the closing direction X.

[0157] In the illustrated exemplary embodiment, an inclined surface 342 in the form of a conical surface is formed on the engaging portion 341, and when the connecting component 3 is attached to the connecting component 2, the inclined surface 342 of the engaging portion 341 moves over the engaging protrusion 240 in the receiving opening 23, thereby displacing the connecting component 3 relative to the connecting component 2 in the direction opposite to the engaging direction Y. Then, the engaging portion 341 can move past the engaging protrusion 240 and engage with the engaging portion 240 in the engaging direction Y.

[0158] The connecting parts 2 and 3 are each provided with a magnetic device 21 and 31 (see Figures 22A and 22B), which magnetically attract each other along the closing direction X, thereby magnetically assisting the alignment of the connecting parts 2 and 3 in the closing direction X.

[0159] In the illustrated exemplary embodiment, the disk-shaped base portion 300 projects radially beyond the engagement portion 341 of the pin element 340, as can be seen in Figures 25A and 25B and 26A and 26B.

[0160] As shown in the order from Figures 27A and 27B to Figures 30A to 30D, when the connecting parts 2 and 3 are placed on each other, the connecting part 3 approaches the connecting part 2 in the closing direction X, and as can be seen from Figure 28B, first the inclined surface 342 formed on the engaging portion 341 comes into contact with the engaging protrusion 240 in the receiving opening 23, and then the connecting part 3 can perform a swinging motion in which the engaging portion 341 slides past the engaging protrusion 240, as can be seen in the transition from Figures 28A and 28B to Figures 29A and 29B.

[0161] When the engaging portion 341 passes over the engaging protrusion 240, the engaging portion 341 engages with the engaging protrusion 240 in the engaging direction Y due to magnetic attraction between the magnetic devices 21 and 31, and the connecting parts 2 and 3 reach the connecting position shown in Figures 30A to 30D.

[0162] In the coupled position, the engagement portion 341 on the pin element 340 engages with the arcuately curved engagement protrusion 240 on the wall of the receiving opening 23. At this time, the engagement portion 341 faces, on the side opposite the engagement protrusion 240, a block 238 in the form of a protruding element protruding in the engagement direction Y within the receiving opening 23. In this way, the block portion 238 prevents tangential movement of the pin element 340 within the receiving opening 23 in the direction opposite to the engagement direction Y, thereby blocking the engagement between the engagement portion 341 and the engagement protrusion 240.

[0163] 30B, at the connected position, the base portion has an outer peripheral edge portion 305 that abuts against the support portion 233 that is located forward of the engagement protrusion 240 in the engagement direction Y. As a result, support for the base portion 300 in the engagement direction Y is realized by the support portion 233, so that when a load is applied between the connected parts 2 and 3, the force along the load direction corresponding to the engagement direction Y is absorbed and released by the support portion 233.

[0164] 30B, a form-engaging portion 234 in the form of a step is formed at the support portion 233, and the edge portion 305 of the base portion 300 rests on the form-engaging portion 234 in the closing direction X. The step resists tilting of the base portion 300, i.e., the connecting part 3, relative to the connecting part 2 under load, thereby preventing the connecting parts 2, 3 from unintentionally loosening.

[0165] 30B in conjunction with FIG. 29B, the step 234 is adjacent to the insertion opening 232. As can be seen from FIG. 29B, the insertion opening 232 serves to provide an empty space into which the base portion 300 can be inserted when the base portion 300 is tilted relative to the connecting components 2 and 3.

[0166] 29B, the user simply pulls the actuating portion in the form of tab 40 on the rear side of connecting part 3 opposite engagement protrusion 240, thereby lifting pin element 340 from receiving opening 23. During this process, the front region of base part 300 facing support part 233 protrudes into insertion opening 232, making it easier to tilt connecting part 3 relative to connecting part 2, and connecting parts 2 and 3 are separated from each other.

[0167] 1 to 12A-12F, resistance to tilting under load is provided by the support of the step 234. In this case, an empty space is formed by the insertion opening 232 in the portion adjacent to the step 234 in the opposite direction of the engagement direction Y, and when the connecting parts 2, 3 are tilted relative to each other to release the connection, the circumferential edge portion of the base portion 300 can insert into this empty space.

[0168] 21 to 30A-30D, the engagement portion 341 is not formed on the disk-shaped base portion 300, but rather on a pin element 340 that protrudes from the base portion 300 in the closing direction X. As a result, the engagement portion 341 is spaced apart from the base portion 300 in the closing direction X, and a circumferential edge portion 305 of the base portion 300 is located radially outward of the engagement portion 241.

[0169] Therefore, the engaging portion 341 is spatially separated from the base portion 300. Furthermore, the provision of form-fitting or friction-fitting by the engaging portion 341 is functionally separate from the support of the base portion 300 by the support portion 233 and the form-engaging portion 234. This makes it possible to suitably support the base portion 300 for load support by the support portion 233 and tilting resistance by the form-engaging portion 234, for example, in that the base portion 300 can provide a relatively large arm of leverage for support compared to the engaging portion 341.

[0170] 21 to 30A-30D, as shown in Fig. 30B in addition to Fig. 24A, the support portion 233 is firmly formed by a surface portion on the base body 20 of the connecting part 2 that extends perpendicular to the radial direction with respect to the closing direction X and is curved in an arc shape around the closing direction X. Similarly, the shape engaging portion 234 in the form of a step is also curved in an arc shape, thereby forming support for the edge portion 305 of the base portion 300.

[0171] 31A to 31C, an arc-shaped support portion 233 extending obliquely in the closing direction X serves both the function of the support portion 233 and the form-engagement portion 234 in the exemplary embodiment shown in FIGS. 31 to 30A to 30D. The obliquely extending support portion 233 in the exemplary embodiment shown in FIGS. 31A to 31C provides support for the oblique edge portion 305 of the base portion 300 of the connecting part 3. This allows the support portion 233 to provide both support in the engagement direction Y and support that resists tilting (i.e., resistance to movement of a region of the base portion 300 that is forward in the closing direction X).

[0172] The exemplary embodiment of FIGS. 31A-31C is equivalent to the exemplary embodiment of FIGS. 21-30A-30D, and therefore reference is also made to the preceding description.

[0173] 32 to 58 show examples of applications of the connecting device 1 described with reference to the embodiment of FIGS. 1 to 31.

[0174] The connecting device 1 can be used, for example, with a bag or backpack, as shown in Figures 32 to 39. The connecting device 1 can be used to connect the ends of straps together (Figures 32, 35, 36 and 39), to connect a strap to a bag body (Figures 33, 34 and 38), to close the lid of a bag or backpack, or to attach an object to a bag or backpack (Figure 37).

[0175] The connecting device 1 can be used as a shoe fastener (Figures 40 and 41), as a pocket fastener for textile products such as jackets and vests (Figure 42), or as a fastener for medical bandages (Figures 43 to 45).

[0176] The connector 1 can be used as a fastener for a fanny pack (FIG. 46) or a tool belt (FIG. 47).

[0177] The coupling device 1 can also serve as a holder for objects such as tools or objects such as electronic devices, lights, etc. for a belt such as a tool belt (FIG. 48).

[0178] The connecting device 1 can be used as a fastener for the strap of a musical instrument, for example a guitar (FIG. 49).

[0179] The coupling device 1 can be used to attach a strap to a bicycle, for example to a bicycle rack or basket (FIG. 50).

[0180] The connecting device 1 can also function as a helmet fastener (Fig. 51).

[0181] The connecting device 1 can provide a strap fastener for fastening an object such as a mat (Fig. 52).

[0182] The coupling device 1 can also provide a strap-type fastening for loading luggage onto a vehicle such as an automobile (FIG. 53).

[0183] The coupling device 1 can be used as a fastener for adjustment systems in vehicles, such as sun blinds (FIG. 54).

[0184] The coupling device 1 can provide a holder for the object to the rack, for example a key ring for a key rack (FIG. 55).

[0185] The coupling device 1 can function as a camera holder (FIG. 56), for example, to couple a camera with a strap.

[0186] The coupling device 1 can function as a clasp for a watch (Fig. 57) or a bracelet (Fig. 58).

[0187] In all of the above applications, the twistability of the connecting parts 2, 3 addresses an important aspect of the requirements of each application: conventional bayonet fasteners and closures often used in this type of application cannot be twisted.

[0188] Other uses are conceivable and possible.

[0189] The idea underlying the invention is not limited to the illustrated embodiment but can also be realized in other ways.

[0190] In particular, connectors of the type described can be used for purposes other than proximal-end connecting strap fasteners or object fastening devices, and connectors of the type described can be used to connect any number of assemblies. [Explanation of symbols]

[0191] 1 Coupling device 2 Connecting part (female part) 20 Base body 21 Magnetic Devices 22 Strap holder 23 Receiving opening 230 bottom 231 Recess 232 Entry opening 233 Support part 234 Step 235 Climbing Slope 236 Block section (boundary wall) 237 Transition plane 238 Block Section 24 Engagement device 240,241 Engagement protrusion 242,243 Prominent section 244,245 Sliding slope 25 Clasp fixed opening 3 Connecting parts (male parts) 30 Base body 300 base 300A~300C area 301 Fastener fixing part 302 base surface 303 Block Element (Tsuba) 304 Edge 305 Edge Exit Line 306 31 Magnetic Devices 32 Strap holder 34 Engagement device 340 pin elements 341 Engagement part 342 Inclined Surface (Cone) 35 Clasp fixed opening 4 Straps 40 Operating unit 5 Strap A. Sliding movement B axis H Height direction K Tilt axis N normal direction Q Horizontal R rotation axis U Zhou direction X Closure Direction Y tie direction

Claims

1. a first connecting part (2) having a first base body (20) and at least one engaging protrusion (240, 241) firmly attached to the first base body (20); a second connecting part (3) that can be placed on the first connecting part (2) in a closing direction (X), the second connecting part (3) having a second base body (30) and an engaging part (341) firmly attached to the second base body (30), the engaging part (341) being engageable with the at least one engaging protrusion (240, 241) of the first connecting part (2) along an engaging direction (Y) different from the closing direction (X), and the engaging part (341) engaging with the at least one engaging protrusion (240, 241) of the first connecting part (2) at a connecting position between the first connecting part (2) and the second connecting part (3); a coupling device (1) comprising: the first coupling part (2) comprising a first magnetic device (21); the second coupling part (3) comprising a second magnetic device (31); and the first magnetic device (21) and the second magnetic device (31) cooperating by magnetic attraction along the closing direction (X) to assist the first coupling part (2) and the second coupling part (3) in attaching to each other; the first base body (20) has a shape-engaging portion (234) against which the second base body (30) abuts at the connecting position between the first connecting part (2) and the second connecting part (3), thereby resisting tilting of the second connecting part (3) relative to the first connecting part (2); At the coupling position, the second base body (30) abuts against the first base body (20) in a first region (300A) and does not abut against the first base body (20) in a second region (300B) adjacent to the first region (300A) in the engagement direction (Y), thereby forming an empty space between the first base body (20) and the second base body (30) along the closing direction (X), and the second base body (30) at the coupling position is supported by the shape engaging portion (234) in a third region (300C) adjacent to or spaced from the second region (300B) in the engagement direction (Y), The second base body (30) is configured to approach the first base body (20) in the second region (300B) and / or the third region (300C) in the closing direction (X) while narrowing the free space when the first connecting part (2) and the second connecting part (3) tilt relative to each other.

2. 2. The coupling device (1) according to claim 1, characterized in that, in a loaded state, a load force acts on the second coupling part (3) with a directional vector component in at least the engagement direction (Y) relative to the first coupling part (2).

3. In the connecting device (1) described in claim 1, the first base body (20) has an insertion opening (232) into which the third region (300C) of the second base body (30) inserts when the second connecting part (3) tilts in the closing direction (X) relative to the first connecting part (2).

4. 4. The coupling device (1) according to claim 3, characterized in that the insertion opening (232) is located at least partially below the at least one engaging projection (240, 241) along the closing direction (X).

5. The coupling device (1) according to claim 1, characterized in that the form-engaging portion (234) is formed by a step on which the second base body (30) rests at the coupling position.

6. 6. The coupling device (1) according to claim 5, characterized in that the form-engaging portion (234) is formed by a surface portion oriented perpendicular to the closing direction (X) or obliquely relative to the closing direction (X).

7. The coupling device (1) according to claim 4, characterized in that the form-engaging portion (234) is spaced apart from the at least one engaging protrusion (240, 241) along the closing direction (X).

8. The coupling device (1) according to claim 7, characterized in that the form-engaging portion (234) is spaced apart from the at least one engaging protrusion (240, 241) along the engagement direction (Y).

9. The coupling device (1) according to claim 1, characterized in that the first base body (20) has a support portion (233) firmly formed on the first base body (20), and in the coupled position, the second base body (30) is supported by the support portion (233) that receives a load in the engagement direction (Y).

10. The coupling device (1) according to claim 9, characterized in that the support portion (233) is curved in an arc shape around the closing direction (X).

11. 11. The coupling device (1) according to claim 10, characterized in that the support portion (233) is spaced apart from the at least one engaging projection (240, 241) along the closing direction (X).

12. 12. The coupling device (1) according to claim 11, characterized in that the support portion (233) is spaced apart from the at least one engagement protrusion (240, 241) along the engagement direction (Y).

13. 13. The coupling device (1) according to claim 12, characterized in that the support portion (233) is formed by a surface portion oriented parallel to the closing direction (X) or obliquely relative to the closing direction (X).

14. 2. The coupling device (1) according to claim 1, wherein the second coupling part (3) is capable of being twisted around the closing direction (X) relative to the first coupling part (2) in the coupling position, and wherein the engagement of the engagement portion (341) with the at least one engagement protrusion (240, 241) is maintained during twisting.

15. 15. The coupling device (1) according to claim 14, characterized in that the second coupling part (3) can be moved in the coupling position relative to the first coupling part (2) through an angle of 10° or more around the closing direction (X).

16. 10. The coupling device (1) according to claim 1, wherein the first coupling part (2) has a block portion (236) firmly attached to the first base body (20), and the block portion (236) is configured to interact with the second coupling part (3) at the coupling position (1) to block the engagement of the engagement portion (341) with the at least one engagement protrusion (240, 241) in the direction opposite to the engagement direction (Y), and the second coupling part (3) can be tilted relative to the first coupling part (2) to release the block in the direction opposite to the engagement direction (Y), thereby disengaging the first coupling part (2) and the second coupling part (3) from each other and disengaging the engagement portion (341) from the at least one engagement protrusion (240, 241).

17. 17. The coupling device (1) according to claim 16, characterized in that the second coupling part (3) has a block element (303) that is firmly attached to the second base body (30) and cooperates with the block portion (236) of the first coupling part (2).

18. 18. The coupling device (1) according to claim 17, characterized in that the blocking element (303) is, in the coupled position, twistable about the closing direction (X) relative to the blocking portion (236) of the first coupling part (2), and that during twisting, blocking of the engagement of the engaging portion (341) with the at least one engaging protrusion (240, 241) is maintained.

19. 19. The coupling device (1) according to claim 18, characterized in that the first base body (20) has a recess (231) at least partially defined by the block portion (236), and the blocking element (303) is positioned in the recess (231) in the coupling position, thereby maintaining blocking of the engagement of the engagement portion (341) with the at least one engagement protrusion (240, 241).

20. 20. The coupling device (1) according to claim 19, wherein the block portion (236) has a rising slope (235), and the rising slope (235) is configured to guide the block element (303) in a sliding direction opposite to the engagement direction (Y) when the second coupling part (3) tilts relative to the first coupling part (2).

21. The coupling device (1) according to claim 16, characterized in that the second coupling part (3) can be lifted from the first coupling part (2) and tilted in the opposite direction of the closing direction (X) relative to the first coupling part (2) on the side opposite to the at least one engagement protrusion (240, 241).

22. 22. The coupling device (1) according to claim 21, characterized in that the second coupling part (3) comprises an actuation part (40) that can be actuated by the user to tilt the second coupling part (3) relative to the first coupling part (2).

23. The coupling device (1) according to claim 22, characterized in that the at least one engagement protrusion (240, 241) is curved in an arc shape centered on the closing direction (X), or multiple engagement protrusions (240, 241) are arranged in a row along a circumferential direction (U) oriented around the closing direction (X).

24. 2. The coupling device (1) according to claim 1, characterized in that the engagement portion (341) extends in a circumferential direction around the closing direction (X).

25. 25. The coupling device (1) according to claim 24, characterized in that the engagement portion (341) is configured to be rotationally symmetrical with respect to the closing direction (X).

26. 2. The coupling device (1) according to claim 1, wherein the second base body (30) of the second coupling part (3) has a base portion (300), and the base portion (300) forms the engagement portion (341), or the engagement portion (341) is spaced apart from the base portion (300) along the closing direction (X).

27. The coupling device (1) according to claim 26, characterized in that the second base body (30) has a pin element (340) protruding from the base portion (300) along the closing direction (X), the engagement portion (341) is provided on the pin element (340), and the engagement portion (341) protrudes from the pin element (340) along the engagement direction (Y).

28. 28. The coupling device (1) according to claim 27, characterized in that the base portion (300) protrudes beyond the engagement portion (341) in a radial direction relative to the closing direction (X).

29. 29. The coupling device (1) according to claim 28, characterized in that the base part (300) is disk-shaped.

30. The coupling device (1) according to claim 29, characterized in that the base portion (300) has an edge portion (305), and in the coupling position, the edge portion (305) of the base portion (300) is supported by the form-engaging portion (234).

31. A coupling device (1) according to claim 30, characterized in that the edge portion (305) extends in a circumferential direction around the closing direction (X) at the base portion (300).

32. The coupling device (1) according to claim 26, characterized in that the base portion (300) forms a base surface (302), the first base body (20) forms a bottom surface (230), and the base surface (302) faces the bottom surface (230) along the closing direction (X) in the coupled position.

33. In the coupling device (1) described in claim 27, the base part (300) can be tilted relative to the first coupling part (2) about a tilting axis (KP.5) perpendicular to the closing direction (X) and the engagement direction (Y) in order to tilt the second coupling part (3) relative to the first coupling part (2).

34. 2. The coupling device (1) according to claim 1, wherein the at least one engagement protrusion (240, 241) has a sliding slope (244, 245) extending obliquely with respect to the closing direction (X), and the sliding slope (244, 245) is configured to guide the second coupling part (3) on the at least one engagement protrusion (240, 241) along the closing direction (X) when the second coupling part (3) is placed on the first coupling part (2), thereby displacing the second coupling part (3) in the opposite direction to the engagement direction (Y) relative to the first coupling part (2) and causing it to pass over the at least one engagement protrusion (240, 241), and the coupling device (1) is characterized in that the engagement portion (341) can be engaged with the at least one engagement protrusion (240, 241) by passing over it in the engagement direction (Y).

35. A strap fastener comprising a connecting device (1) according to claim 1.

36. 36. The strap fastener of claim 35, further comprising: a strap (4) connected to the second connecting part (3); A strap fastener comprising:

37. 37. A strap fastener according to claim 36, characterized in that the strap (4) is fixedly and non-adjustably connected to the second connecting part (3).

38. 38. The strap fastener of claim 37, A strap fastener, characterized in that the first connecting part (2) has two engaging protrusions (240, 241), and the two engaging protrusions (240, 241) are spaced apart from each other so that the strap (4) can be guided through and between the engaging protrusions (240, 241) at the connecting position between the first connecting part (2) and the second connecting part (3).

39. An object fastening device for fastening an object to an assembly, comprising:

10. An object fastening device comprising the connecting device (1) according to claim 1, wherein the object is arranged on one of the connecting parts (2, 3) and the other connecting part (2, 3) is arranged on the assembly.

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