Fastening system and method for locking and releasing a first closure element to and from a second closure element by means of a fastening system
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- BUSCH PROTECTIVE GERMANY GMBH & CO KG
- Filing Date
- 2024-07-24
- Publication Date
- 2026-07-08
Smart Images
Figure EP2024071061_06032025_PF_FP_ABST
Abstract
Description
[0001] Fastening system and method for locking and detaching a first closure element to or from a second closure element by means of a fastening system
[0002] Description
[0003] The invention relates to a fastening system. Furthermore, the invention relates to a method for locking and detaching a first closure element to or from a second closure element by means of the fastening system.
[0004] With protective helmets and other safety clothing, it is often necessary to attach and later detach various accessories to the helmet or garment. Such helmet accessories include, for example, light sources in the form of headlights, visors, radios, and similar items. Attaching the accessory should be as simple as possible, since the helmet wearer is wearing the helmet and therefore cannot see it. Detaching the accessory should also be easy. At the same time, however, unintentional detachment should be prevented. Easy attachment and detachment is also advantageous for other safety clothing, such as body armor.
[0005] A fastening system for helmets, especially hard hats, and other safety gear should therefore allow for easy attachment and removal while simultaneously preventing accidental detachment. For example, if the accessories are secured solely by magnets, they can be easily attached, but depending on the strength of the magnets, this can either make removal difficult or make accidental detachment likely.
[0006] The object of the invention is therefore to provide a fastening system for safety helmets and clothing that securely and easily locks accessories without making it difficult to remove them.
[0007] This object is achieved by a fastening system comprising a first closure element and a second closure element, which are designed to be locked to one another by a movement of the first closure element relative to the second closure element along a locking direction and to assume a locked state, wherein the first closure element comprises at least one pivotably articulated locking element, wherein the second closure element comprises at least one receiving component with a stop wall, wherein the fastening system comprises a return element which is designed to exert an actuating force on the locking element in order to pivot the locking element in the direction of the receiving component of the second closure element, so that the stop wall of the second closure element limits a movement of the locking element and thus of the first closure element in an opposite direction,wherein the opposite direction is opposite to the locking direction, wherein the receiving component and the locking element each comprise at least one release wall which is designed to slide on one another during a movement of the first closure element relative to the second closure element along a release direction in order to pivot the locking element from a locking position against the actuating force into a release position, wherein the release direction runs transversely to the locking direction.
[0008] In the fastening system according to the invention, for example, one of the closure elements is connected to a protective helmet or a safety vest, and the other closure element is connected to an accessory, for example a visor or a lamp. The closure elements can advantageously be easily locked together by moving them towards one another along the locking direction. In the locked state, the locking element is pivoted by the actuating force so that it engages in the receiving component of the second closure element. The stop wall of the receiving component prevents the first closure element from being removed from the second closure element by movement in the opposite direction. In this way, unintentional detachment of the closure elements from one another is prevented.
[0009] To release the locking elements from one another, they must be moved relative to one another along the release direction, which differs from the locking direction and the opposite direction. This causes the release walls of the receiving component and the locking element to slide against one another, and this sliding movement moves the locking element from its locking position to the release position. In the release position, the locking element is no longer located in the receiving component and is therefore no longer limited by the stop wall. This allows the first locking element to be easily released from the second locking element without the locking element pressing against the stop wall.
[0010] One of the advantages of this fastening system is that the release direction specifies a specific direction along which the fastener elements must be released from each other. This largely prevents accidental release without making the removal process itself more difficult.
[0011] The detachment direction runs transversely to the locking direction. The term "transverse" in this description means that the transverse directions are not parallel to each other, but rather form an angle between them. In particular, the angle between the detachment direction and the locking direction is at least 20°, in particular at least 45°, and furthermore in particular at least 60°. In particular, the detachment direction and the locking direction are substantially orthogonal to each other.
[0012] The first closure element and the second closure element of the fastening system are locked or fastened to each other in the locked state. In a released state, the first closure element and the second closure element are separated from each other.
[0013] The locking element is pivotally connected to the first closure element, in particular via a flexure joint. The return element exerts an actuating force on the locking element in order to pivot the locking element from the release position into the locking position. In particular, the locking element protrudes from a surface of the first closure element in the locking position. In the release position, the locking element is in particular recessed into the surface of the first closure element. In order to move the locking element from the locking position to the release position, a force must be applied which overcomes the actuating force. This is done, for example, by the user of the helmet when they move the closure elements against one another. The release walls guide the movement of the locking element and ensure that the locking element experiences a force component counter to the actuating force when moving along the release direction.
[0014] Preferably, the first closure element has a first contact surface and the second closure element has a second contact surface, wherein the first contact surface in the locked state bears at least partially against the second contact surface in a contact direction, wherein the contact direction extends transversely to the locking direction, wherein the locking element is articulated to the first contact surface, wherein the actuating force comprises a force component along the contact direction in order to pivot the locking element out of a plane of the first contact surface. The contact surfaces ensure that the closure elements bear securely against one another in the locked state and that a defined contact zone is provided. The contact direction extends transversely to the locking direction and / or the opposite direction and in particular also transversely to the detachment direction.In particular, the first contact surface and the second contact surface move towards one another when the first closure element is locked to the second closure element along the locking direction. In particular, the first contact surface and the second contact surface move towards one another when the first closure element is detached from the second closure element along the detachment direction. The first contact surface and the second contact surface are in particular flat surfaces. The locking element protrudes in particular from the first contact surface when it is in the locking position. The contact direction in particular has an angle of at least 45° to the locking direction. In particular, the contact direction is substantially orthogonal to the locking direction.
[0015] According to one embodiment, the first contact surface is an upper side of the first closure element, and the second contact surface is an underside of the second closure element. A reverse arrangement is also encompassed by the invention. In particular, the first closure element and / or the second closure element is a flat body. The contact surfaces extend, in particular, along an upper side or underside of the flat body.
[0016] Preferably, the locking element is designed as a spring tongue, and a spring component of the spring tongue is the return element. In other words, by designing the locking element as a spring tongue, the return element is integrated into the locking element. The actuating force is then a spring force acting on the spring tongue. In particular, the locking position of the locking element is a rest position of the spring tongue. In contrast, the spring tongue is deflected from the rest position, particularly in the release position, so that the spring force or actuating force acts on the spring tongue. The spring tongue is, in particular, articulated with a rear side to the first locking element, while a front side of the spring tongue is free-standing and, in the locked state, points towards the stop wall.If the first locking element is moved in the opposite direction to the second locking element, the front side of the spring tongue hits the stop wall and prevents further movement in the opposite direction. The locking element is designed, in particular, as a leaf spring.
[0017] The receiving component is preferably designed as a recess in the second closure element, wherein the recess is in particular designed to be at least partially form-fitting with the locking element. In particular, the receiving component is introduced into the second contact surface or arranged on the second contact surface. For example, the receiving component is designed as a recess in the second contact surface. The receiving component is in particular introduced into the second closure element such that the receiving component is arranged in the contact direction opposite the locking element of the first closure element when the first closure element is locked to the second closure element in the locked state. The stop wall is in particular designed as the front wall of the recess.
[0018] When the locking elements are locked together, the locking element is pressed down, particularly by the second contact surface, and moved into the release position until the locking element is positioned opposite the receiving component. The receiving component provides the space required for the locking element to move back into the locking position under the actuating force. The release wall now prevents the first locking element from moving back in the opposite direction.
[0019] Preferably, the first closure element and the second closure element each have a guide wall, which each extend along the detachment direction and which abut one another in the locked state, wherein the first closure element and the second closure element are displaceable against one another along the guide walls in the locked state in order to slide against one another and detach the first closure element from the second closure element, wherein the detachment walls are in particular arc-shaped. The guide walls are in particular designed to facilitate detachment of the closure elements from one another by providing a forced guide for the movement of the closure elements relative to one another. The closure elements are moved by the guide walls, in particular along a control curve, along which the closure elements can be easily detached from one another.In particular, the detachment direction extends in an arcuate manner, so that the arcuate detachment walls follow the detachment direction.
[0020] According to one embodiment, one of the guide walls has a guide groove and the other guide wall has a protruding retaining lug, wherein the retaining lug engages in the guide groove in the locked state, wherein the guide groove extends in the detachment direction and wherein a length of the guide groove is greater than a length of the retaining lug in the detachment direction. The retaining lug and the guide groove ensure that the detachment movement is facilitated by guiding the movement along the detachment direction. Movements perpendicular to the detachment direction are, in particular, partially prevented. In particular, the retaining lug and the guide groove prevent the closure elements from being moved along the contact direction during the detachment process.
[0021] According to a further embodiment, one of the guide walls has at least one retaining plate projecting in the locking direction and the other guide wall has at least one guide indentation, wherein the retaining plate is arranged in the guide indentation in the locked state, wherein the guide indentation and the retaining plate each extend in the detachment direction, wherein a length of the guide indentation is greater than a length of the retaining plate in the detachment direction. Like the guide groove and the retaining lug, the guide indentation and the retaining plate guide the detachment movement and facilitate the detachment of the closure elements from one another. In particular, the fastening system comprises two retaining plates and two guide indentations, which are each arranged on both sides of the locking element and the receiving component, offset in the detachment direction.In particular, the retaining plate and / or the guide recess have beveled side walls. The bevels extend, in particular, in a plane of the contact surfaces, so that the bevels separate the closure elements from one another during the detachment movement.
[0022] Preferably, the release wall of the locking element and / or the receiving component is chamfered. A chamfered design of the release wall facilitates the movement of the locking element from the locking position to the release position, since the chamfered walls guide the movement of the locking element during detachment. In particular, the edges of the locking element and / or the edges of the receiving component are designed as chamfered edges. In particular, only the edges that extend in the detachment direction are chamfered. Thus, in particular, the stop wall and the front end of the locking element are not chamfered.
[0023] Preferably, the release walls of the locking element and / or the receiving component are inclined in the detachment direction. Designing the release walls as inclined surfaces in the direction of detachment guides the movement of the locking element into the release position during the detachment movement.
[0024] According to one embodiment, the locking element is divided along the locking direction into a first section and a second section, wherein the first section is wider than the second section. The first section and / or the second section have, in particular, a rectangular base area. Thus, the locking element has, in particular, a base area consisting of a wider rectangular first section and a subsequent, narrower rectangular second section. According to another embodiment, the first section and the second section are of equal width and, in particular, each have a rectangular base area. The side surfaces of the rectangular sections are, in particular, designed as the chamfered release walls.
[0025] Preferably, the locking element is hinged orthogonally to the locking direction. This facilitates pivoting of the locking element during locking of the closure elements to one another.
[0026] In particular, the first closure element and / or the second closure element comprise a spring element which, in the fixed state, exerts a force component in the opposite direction on the first closure element or a force component in the locking direction on the second closure element. The spring element preferably presses the regulating element towards the stop wall, so that the regulating element rests securely in the receiving component and the closure elements hold securely against one another. The spring element is designed, in particular, as part of the locking element or separately from the locking element. For example, the spring force of a locking element designed as a spring tongue ensures that the force is exerted in the opposite direction on the first closure element.
[0027] The fastening system preferably comprises at least one pair of magnets, which, in the locked state, exert an attractive magnetic force between the first closure element and the second closure element. The pair of magnets comprises, in particular, two magnets or a magnet and a magnetizable body. In either case, the pair of magnets attracts each other in the locked state and thus additionally holds the closure elements together in the locked state. The fastening system preferably comprises two pairs of magnets, which are arranged, in particular, to the left and right of the locking element and the receiving component.
[0028] According to one embodiment, the return element comprises the pair of magnets. In particular, the pair of magnets is provided as the return element or as part of the return element. Thus, instead of designing the locking element as a spring tongue, a magnetic pivoting of the locking element can be provided. According to another embodiment, the pair of magnets is designed separately from the return element.
[0029] According to one embodiment, at least one of the magnets of the magnet pair has a polarity direction that extends from a north pole to a south pole, wherein the polarity direction extends substantially parallel to the detachment direction. The polarity direction of the other magnet of the magnet pair extends in particular opposite to the polarity direction of the first magnet. In this way, it is achieved that in the locked state, the magnets hold securely together. However, if the closure elements are moved against each other along the detachment direction, the north poles and south poles of the magnets are no longer aligned opposite to each other, but rather a north pole of the first magnet is in opposition to a north pole of the second magnet or a south pole of the first magnet is in opposition to the south pole of the second magnet. This creates a repulsive force between the closure elements, which facilitates the detachment of the closure elements from one another.
[0030] Preferably, the first closure element or the second closure element is fixed or can be fixed to a helmet, and the other closure element is fixed or can be fixed to a helmet accessory. The helmet accessory is, for example, a visor, a lamp, headphones, a radio, or a similar accessory. The helmet is, in particular, a protective helmet.
[0031] The locking direction extends in particular from the front towards the helmet. This means that the accessory is moved from the front towards the helmet for securing it. The detachment direction extends in particular laterally along the circumference of the helmet or head circumference. This means that the helmet accessory is moved in particular sideways for removal, while detachment in the opposite direction, i.e. away from the helmet, is prevented. Designing the detachment direction as a lateral direction has the advantage, among other things, that if a force is applied laterally to the accessory, it is detached from the helmet without the force being transferred with full intensity to the helmet and the helmet user. If the helmet accessory is a protective visor, for example, and the lateral force is caused by a projectile or impact hitting the protective visor, the visor will detach from the helmet without the user's head being thrown sideways with the full force of the projectile or impact.This prevents serious injuries to the user.
[0032] The object is further achieved by a helmet comprising a helmet accessory and a fastening system according to one of the aforementioned embodiments, wherein the helmet accessory is releasably fixed or can be fixed to the helmet by means of the fastening system. The helmet embodies the same advantages, features, and properties as the previously described fastening system.
[0033] In addition, the object is achieved by a method for locking and detaching a first closure element to or from a second closure element by means of a fastening system, in particular according to one of the aforementioned embodiments, wherein the first closure element is moved relative to the second closure element along a locking direction, wherein an actuating force is exerted on a locking element of the first closure element by means of a return element, wherein the actuating force pivots the locking element in the direction of a receiving component of the second closure element and assumes a locking position, wherein a stop wall of the receiving component of the second closure element limits a movement of the locking element and thus of the first closure element in an opposite direction, so that the fastening system assumes a locked state, wherein the opposite direction is opposite to the locking direction,wherein, for detaching the first closure element, the first closure element is moved relative to the second closure element along a detachment direction, so that a release wall of the locking element slides along a release wall of the receiving component in order to pivot the locking element from the locking position against the actuating force into a release position, wherein the detachment direction runs transversely to the locking direction.
[0034] The method embodies the same advantages, features, and properties as the previously described closure system and helmet. Further features of the invention will become apparent from the description of embodiments of the invention together with the claims and the accompanying drawings. Embodiments of the invention may fulfill individual features or a combination of several features.
[0035] Within the scope of the invention, features marked with “in particular” or “preferably” are to be understood as optional features.
[0036] The invention is described below, without limiting the general inventive concept, using exemplary embodiments with reference to the drawings, whereby express reference is made to the drawings for all details of the invention not explained in more detail in the text. They show:
[0037] Fig. 1 is a schematically simplified front view of a first closure element to which a visor is attached,
[0038] Fig. 2 is a schematically simplified view of the closure element and the visor from Fig. 1 from above,
[0039] Fig. 3 is a schematically simplified view of the closure element and the visor from Figs. 1 and 2 from below,
[0040] Fig. 4 is a schematically simplified front view of a second closure element intended for attachment to a helmet, Fig. 5 is a schematically simplified view of the closure element from Fig. 4 from above,
[0041] Fig. 6 is a schematically simplified view of the closure element of Figs. 4 and 5 from below,
[0042] Fig. 7 is a schematically simplified representation of a first closure element which is locked along a locking direction on a second closure element,
[0043] Fig. 8 is a schematically simplified representation of the locking process from Fig. 7 along the section line A:A,
[0044] Fig. 9 is a schematic simplified representation of the
[0045] Fastening system with the first locking element and the second locking element from Fig. 8 during the locking process,
[0046] Fig. 10 is a schematic simplified representation of the
[0047] Fastening system from Fig. 8 and 9 in locked position,
[0048] Fig. 11 a is a schematically simplified representation of a
[0049] Fastening system with a first closure element and a second closure element, which are separated from each other by moving along a detachment direction,
[0050] Fig. 1 1 b to 1 1 d a schematically simplified cross-sectional view of the fastening system of Fig. 1 1 a during different detachment states, and
[0051] Fig. 12 a schematic simplified representation of a
[0052] Fastening system for attaching a helmet accessory to a helmet shell.
[0053] In the drawings, identical or similar elements and / or parts are provided with the same reference numbers, so that a repeated presentation is omitted.
[0054] Fig. 1 shows a simplified schematic of a first closure element 10, by means of which a visor 40 can be releasably secured to a helmet (not shown). The closure element 10 is fixed to an upper edge of the visor 40.
[0055] Fig. 2 shows the first closure element 10 and the visor 40 in a top view. This shows that the first closure element 10 has a substantially flat shape and the upper side is largely formed as a first contact surface 11. A locking element 12 is arranged centrally in the first contact surface 11 and is hinged to the first contact surface 11, which is shown in Fig. 2 by a dashed line. In the embodiment shown, the locking element 12 comprises a wider first section 12a and a narrower second section 12b, each of which has a substantially rectangular cross-section. According to another embodiment, the sections 12a and 12b can also be the same width. The lateral edges of the locking element 12 are designed as release walls 13, which have a beveled or chamfered shape. This is shown in Fig. 2 as dashed lines.While the rear end of the locking element 12 is hinged to the first contact surface 11, the front end is free-standing, so that the locking element 12 is pivotally arranged. In the illustrated embodiment, the locking element 12 is designed as a spring tongue 12d, which is lifted out of the first contact surface 11 by its spring force or actuating force. In this position protruding from the first contact surface 11, the locking element 12 assumes a so-called locking position. If, however, the locking element 12 is pressed downwards so that it is sunk into the first contact surface 11, this position is referred to as the release position.
[0056] A guide wall 17 extends upwards from the first contact surface 11 at the front, extending vertically upwards from the first contact surface 11. Two retaining plates 14 protrude inwardly from this guide wall 17 and are thus arranged above the first contact surface 11. A retaining lug 15 also protrudes from the guide wall 17 and points inward in the center. Two magnets 16 are also incorporated into the first contact surface 11.
[0057] Fig. 3 shows the first closure element 10 in a view from below. This view also shows the first locking element 12, which in the embodiment shown completely penetrates the first contact surface 11. However, the locking element 12 can also be arranged in the first closure element 10 such that it is not visible from the rear. The visor 40 is fixed to the first closure element 10 by means of a visor holder 18. For example, two screws are provided as part of the visor holder 18, with which the visor 40 is screwed to the first closure element 10.
[0058] Fig. 4 shows a second closure element 20 in a front view. The second closure element 20 comprises on its underside a second contact surface 21 which, in the locked state, bears against the first contact surface 11 of the first closure element 10. A guide wall 27 extends along the front side of the second closure element 20 and, in the locked state, bears against the guide wall 17 of the first closure element 10. A guide groove 25 is made centrally in the guide wall 27, into which the retaining lug 15 of the first closure element 10 engages in the locked state. Likewise, two guide indentations 24 are arranged on both sides of the second closure element 20, into which the retaining plates 14 engage. The side edges of the guide indentations 24 are oblique, which is shown in Fig. 4 by dashed lines. The guide wall 27 is extended centrally upwards and forms a helmet holder 29 there.This helmet holder 29 is fixed, for example, to an inside or outside of the helmet shell of the helmet.
[0059] Fig. 5 shows the second closure element 20 in a top view. This view shows that the second closure element 20 has two magnets 26 that are symmetrically formed and, when locked, are located directly above the magnets 16 of the first closure element 10. The magnet pairs 16, 26 formed in this way hold the closure elements 10, 20 together. Furthermore, Fig. 5 clearly shows that the guide recesses 24 are wider than the retaining plates 14 and thus allow movement of the retaining plates 14 in the guide recesses 24.
[0060] Fig. 6 shows the second closure element 20 in a view from below. In this view, a receiving component 22 can be seen, which is designed as a recess in the second contact surface 21 on the underside of the second closure element 20. The receiving component 22 is at least partially designed to complement the shape of the locking element 12. If the closure elements 10, 20 are moved into the locked state, the locking element 12 moves from the release position into the locking position due to the spring force, so that the locking element 12 enters the receiving component 22. The side walls of the receiving component 22 are at least partially designed as release walls 23, which are also designed as beveled or chamfered edges. This is represented by dashed lines.When the locking elements 10, 20 move laterally against each other, the release walls 13, 23 release the locking element 12 from the receiving component 22 and move it from the locking position into the release position.
[0061] Fig. 7 shows a simplified schematic of a fastening system 2 comprising the first closure element 10 and the second closure element 20. The visor 40 is not shown in Fig. 7 for reasons of clarity. In Fig. 7, the closure elements 10, 20 are separated from one another. By moving the first closure element 10 along a locking direction 50 toward the second closure element 20, the first closure element 10 is locked to the second closure element 20. This is the case, for example, if the visor 40, which is fixed to the first closure element 10, is to be attached to a helmet to which the second closure element 20 is fixed.
[0062] Fig. 8 shows a cross-sectional view of the locking movement from Fig. 7 along the axis A:A. In contrast to Fig. 7, however, the locking elements 10, 20 are already moved much closer together for reasons of clarity. In Fig. 8 it can be seen that the locking element 12, designed as a spring tongue 12d, is pivoted upwards out of the first contact surface 11 in the rest state and assumes the locking position. By means of a solid-state joint 12c, which acts as a return element 19, a spring force or adjusting force is exerted on the spring tongue 12d when it moves out of the locking position. In Fig. 8 it is also visible that the receiving component 22 is designed as a recess in the second locking element 20 and the stop wall 22a is a front wall of the recess.
[0063] Fig. 9 shows the fastening system from Fig. 8, wherein the first closure element 10 has already been partially pushed under the second closure element 20. Due to the movement of the first closure element 10 along the locking direction 50, the first contact surface 11 moves along the second contact surface 21. As a result, the locking element 12 is pressed downward against the actuating force 55 acting in a contact direction 52, where it assumes a release position. As a result, the first contact surface 11 and the second contact surface 21 can be easily moved relative to one another along the locking direction 50. This movement also inserts the retaining lug 15 into the guide groove 25, thereby preventing the closure elements 10, 20 from moving relative to one another along the contact direction 52.
[0064] Fig. 10 shows the fastening system of Figs. 8 and 9 in the locked state. In this locked state, the retaining lug 15 lies completely in the guide groove 25 and the guide wall 17 of the first closure element 10 rests against the guide wall 27 of the second closure element 20. Due to the actuating force 55, the locking element 12 moves upward in the contact direction 52 into the receiving component 22 of the second closure element 20. This prevents detachment of the first closure element 10 from the second closure element 20 in an opposite direction 51, which extends opposite to the locking direction 50. The stop wall 22a prevents movement of the locking element 12 in the opposite direction 51 and thus of the entire first closure element 10, so that the closure elements 10, 20 of the fastening system 2 lie securely against one another. In Fig.10 is not shown that, in the locked state, the magnets 16, 26 lie one above the other in two pairs of magnets and securely hold the locking elements 10, 20 together. Furthermore, the retaining plates 14 lie in the guide recesses 24, which is also not visible in the selected cross-sectional view.
[0065] Fig. 11 a shows a simplified schematic of a detachment process for detaching the first closure element 10 from the second closure element 20 of the fastening system 2. In the illustration shown, the closure elements 10 lie one above the other. For detachment, the first closure element 10 is moved along an arcuate detachment direction 53 or an opposite direction relative to the second closure element 20. The direction of movement of the detachment movement is predetermined by the arcuate guide walls 17, 27. For this purpose, the arcuate guide wall 17 of the first closure element, as shown for example in Figs. 1 to 3, moves along the arcuate guide wall 27, as shown for example in Figs. 4 and 5.In addition, the retaining lug 15 and the guide groove 25 as well as the holding plates 14 and the guide indentations 24 support the movement in the direction of the release directions 53, since they largely prevent movement in other directions. The movement in the release direction 53 causes the magnet pairs 16, 26 to no longer lie on top of one another and thus no longer hold the closure elements 10, 20 together. In addition, the movement in the release direction 53 moves the release walls 13 of the locking element 12 along the release walls 23 of the receiving component 22. This is shown in Figs. 11b, 11c and 11d. These figures each show a cross-sectional view in the direction of the locking direction 50 through the adjacent closure elements 10, 20 in different positions. In the locking position shown in Fig. 11b, the magnets 16, 26 are still on top of one another.In addition, the second section 12b of the locking element 12 is pivoted upwards and lies in the receiving component 22 designed as a recess, as already shown in Fig. 10 from a different viewing direction. In Fig. 11b it can be seen that the inclined or chamfered release walls 13 of the locking element 12 rest against the likewise inclined or chamfered release walls 23 of the second closure element. Since the release walls 13, 23 are each designed to be inclined or chamfered, the locking element 12 is pressed downwards in the detachment direction 53 by the movement of the second closure element 20 relative to the first closure element 10, as shown in Fig. 11c. Finally, the locking element 12 lies completely under the second contact surface 21 of the second closure element 20 and thus moves into the release position, shown in Fig. 11d. In this release position, the locking element 12 is released from the receiving component 22.In this way, the visor 40 can be easily detached from the helmet by moving it along the detachment direction 53, while at the same time, unintentional removal of the visor 40 is largely prevented. Thus, the fastening system 2 defines the detachment direction 53, which differs from the locking direction 50 or the opposite direction 51.
[0066] Fig. 12 shows a further embodiment of a fastening system 2 for securing a helmet accessory 45, which in the embodiment shown is a lamp 44, to a helmet 42. The lamp 44 is fixed to the first closure element 10, which is clamped to the outside of the helmet shell of the helmet 42. The second closure element 20 is firmly fixed to the helmet shell of the helmet 42. The first closure element 10 comprises at its lower end two locking elements 12, on each of which magnets 16 are arranged. The magnets 16 are attracted by magnets of the second closure element 20, which are hidden in Fig. 12, and pivoted towards the helmet shell, so that the locking elements 12 are introduced into receiving components 22 of the second closure element 20 when the first closure element 10 is fixed to the second closure element 20 in the locking direction 50.A spring element 31 of the first closure element 10, which rests against a spring element 32 of the second closure element 20, exerts a force component in the opposite direction 51 on the first closure element 10 in the locked state in order to fix it to the second closure element 20. The stop walls 22a of the receiving components 22 prevent the first closure element 10 from being detached from the second closure element 20 due to the force component in the opposite direction 51. To release the closure elements 10, 20 from each other, they are instead moved against each other in the direction of the detachment direction 53. Due to the release walls 13, 23 of the locking elements 12 or the receiving components 22, which are not shown in Fig. 12, the locking elements 12 are released from the receiving components 22 during a movement in the detachment direction 53, so that the first closure element 10 can be released from the second closure element 20 and thus the lamp 44 can be released from the helmet 42.
[0067] All mentioned features, including those revealed solely in the drawings as well as individual features disclosed in combination with other features, are considered essential to the invention, both individually and in combination. Embodiments according to the invention may be fulfilled by individual features or a combination of several features.
[0068] 2 Fastening system
[0069] 10 first closure element
[0070] 11 first contact area
[0071] 12 Locking element 2a first section 2b second section 2c Solid joint 2d Spring tongue
[0072] 13 Release wall
[0073] 14 Holding plate
[0074] 15 retaining lug
[0075] 16 Magnet
[0076] 17 Guide wall
[0077] 18 Sight mount
[0078] 19 Reset element
[0079] 20 second closure element
[0080] 21 second contact surface
[0081] 22 Receptacle component 2a Stop wall
[0082] 23 Release wall
[0083] 24 Guide recess
[0084] 25 guide groove
[0085] 26 Magnet
[0086] 27 Guide wall
[0087] 29 Helmet holder
[0088] 31 spring element
[0089] 32 spring element
[0090] 40 visor
[0091] 42 Helmet
[0092] 44 Lamp 45 Helmet accessory
[0093] 50 Locking direction
[0094] 51 Opposite direction
[0095] 52 Installation direction 53 Detachment direction
[0096] 55 actuating force
Claims
Fastening system and method for locking and detaching a first closure element to or from a second closure element by means of a fastening system 1. Fastening system (2) comprising a first closure element (10) and a second closure element (20), which are designed to be locked to one another by a movement of the first closure element (10) relative to the second closure element (20) along a locking direction (50) and to assume a locked state, wherein the first closure element (10) comprises at least one pivotably articulated locking element (12), wherein the second closure element (20) comprises at least one receiving component (22) with a stop wall (22a), wherein the fastening system (2) comprises a return element (19) which is designed to exert an actuating force (55) on the locking element (12) in order to pivot the locking element (12) in the direction of the receiving component (22) of the second closure element (20), so that the stop wall (22a) of the second closure element (20) prevents a movement of the locking element (12) and thus of the first closure element (10) in an opposite direction (51), wherein the opposite direction (51) is opposite to the locking direction (50), wherein the receiving component (22) and the locking element (12) each comprise at least one release wall (13, 23) which is designed to slide on one another during a movement of the first closure element (10) relative to the second closure element (20) along a detachment direction (53) in order to pivot the locking element (12) from a fixed position into a release position counter to the actuating force, wherein the detachment direction (53) runs transversely to the locking direction (50).
2. Fastening system (2) according to claim 1, characterized in that the first closure element (10) has a first contact surface (11) and the second closure element (20) has a second contact surface (21), wherein the first contact surface (11) in the locked state bears at least partially against the second contact surface (21) in a contact direction (52), wherein the contact direction (52) extends transversely to the locking direction (50), wherein the locking element (12) is articulated on the first contact surface (11), wherein the actuating force (55) comprises a force component along the contact direction (52) in order to pivot the locking element (12) out of a plane of the first contact surface (11).
3. Fastening system (2) according to claim 1 or 2, characterized in that the locking element (12) is designed as a spring tongue (12d) and a spring component of the spring tongue (12d) is the return element (19).
4. Fastening system (2) according to one of claims 1 to 3, characterized in that the receiving component (22) is designed as a recess in the second closure element (20), wherein the recess is designed in particular at least partially to form a positive fit with the locking element (12).
5. Fastening system (2) according to one of claims 1 to 4, characterized in that the first closure element (10) and the second closure element (20) each have a guide wall (17) which each extend along the detachment direction (53) and which abut one another in the locked state, wherein the first closure element (10) and the second closure element (20) are displaceable against one another along the guide walls (17) in the locked state in order to slide against one another and to detach the first closure element (10) from the second closure element (20), wherein the detachment walls are in particular arcuate.
6. Fastening system (2) according to claim 5, characterized in that one of the guide walls (17) has a guide groove (25) and the other guide wall (17) has a protruding retaining lug (15), wherein the retaining lug (15) engages in the guide groove (25) in the locked state, wherein the guide groove (25) extends in the detachment direction (53) and wherein a length of the guide groove (25) is greater than a length of the retaining lug (15) in the detachment direction.
7. Fastening system (2) according to claim 5 or 6, characterized in that one of the guide walls (17) has at least one retaining plate (14) projecting in the locking direction (50) and the other guide wall (27) has at least one guide recess (24), wherein the retaining plate (14) is arranged in the guide recess (24) in the locked state, wherein the guide recess (24) and the holding plate (14) each extend in the detachment direction (53), wherein a length of the guide recess (24) is greater than a length of the holding plate (14) in the detachment direction (53).
8. Fastening system (2) according to one of claims 1 to 7, characterized in that the release wall (13, 23) of the locking element (12) and / or the receiving component (22) are chamfered.
9. Fastening system (2) according to one of claims 1 to 8, characterized in that the release wall (13, 23) of the locking element (12) and / or of the receiving component are inclined in the detachment direction (53).
10. Fastening system (2) according to one of claims 1 to 9, characterized in that the locking element (12) is divided along the locking direction (50) into a first section (12a) and a second section (12b), wherein the first section (12a) is wider than the second section (12b).
11. Closure element (10, 20) according to one of claims 1 to 10, characterized in that the locking element (12) is articulated orthogonally to the locking direction (50).
12. Fastening system (2) according to one of claims 1 to 11 comprising at least one pair of magnets (16, 26) which, in the locked state, exerts an attractive magnetic force between the first closure element (10) and the second closure element (20).
13. Fastening system (2) according to one of claims 1 to 12, characterized in that the first closure element (10) or the second closure element (20) is fixed or can be fixed to a helmet (42) and the other closure element (20) is fixed or can be fixed to a helmet accessory (45).
14. Helmet (42) comprising a helmet accessory (45) and a fastening system (2) according to one of claims 1 to 13, wherein the helmet accessory (45) is or can be fixed releasably to the helmet (42) by means of the fastening system (2).
15. A method for locking and detaching a first closure element (10) to or from a second closure element (20) by means of a fastening system (2), in particular according to one of claims 1 to 14, wherein the first closure element (10) is moved relative to the second closure element (20) along a locking direction (50), wherein an actuating force (55) is exerted on a locking element (12) of the first closure element (10) by means of a return element (19), wherein the actuating force (55) pivots the locking element (12) in the direction of a receiving component (22) of the second closure element (20) and assumes a locking position, wherein a stop wall (22a) of the receiving component (22) of the second closure element (20) limits movement of the locking element (12) and thus of the first closure element (10) in an opposite direction, so that the fastening system (2) assumes a locked state,wherein the counter direction (51) is opposite to the locking direction (50), wherein for detaching the first closure element (10) the first closure element (10) is moved relative to the second closure element (20) along a detachment direction (53), so, that a release wall (13) of the locking element (12) slides on a release wall (23) of the receiving component (22) in order to pivot the locking element (12) from the locking position against the actuating force (55) into a release position, wherein the detachment direction runs transversely to the locking direction (50).