Closure device having a locking element adjustably mounted on an actuating element

Abstract

The proposed solution relates to a closure device in which, in order to connect at least one closure part (2.1, 2.2) to a housing (1) of the closure device, the at least one closure part (2.1, 2.2) can be plugged onto the housing (1) using at least one plug portion (21.1, 21.2) and the at least one locking element (5.1, 5.2) can be form-fittingly connected to the at least one plug portion (2.1, 2.2) plugged onto the housing (1) by means of adjustment into a locking position. By adjusting an actuating element (4) of the closure device from a rest position into a release position, the form-fitting connection between the at least one locking element (5.1, 5.2) and the at least one plug portion (21.1,21.2) can be released. According to the invention, the at least one locking element (5.1, 5.2) is held on the actuating element for co-adjustment between the rest position and the release position and is mounted on the actuating element so as to be adjustable between the locking position and the unlocking position.

Description

[0001] FID430WO Page 1

[0002] Fidlock GmbH Kirchhorster Straße 39 30659 Hannover

[0003] Locking device with a locking element adjustable on an actuating element

[0004] Description

[0005] The proposed solution concerns a locking device with a housing and at least one locking part that can be fixed to it.

[0006] A locking device with at least one locking element, which has at least one plug-in section for connecting the at least one locking element to the housing, can be used, for example, as a buckle for a stroller or a child car seat. To secure the at least one locking element plugged into the housing, at least one locking element is provided on the housing, which is adjustable between a locked position and an unlocked position. Furthermore, an actuating element is provided on the housing, which is adjustable between a rest position and a release position. To connect the at least one locking element to the housing and thereby close the locking device, the at least one locking element can be plugged into the housing with its at least one plug-in section.The at least one locking element can in turn be positively connected to the at least one plug-in section attached to the housing by adjusting it into its locking position, wherein the positive connection between the at least one locking element and the at least one plug-in section can be released by adjusting the actuating element from its rest position to its release position.

[0007] P 0348 WO FID430WO Page 2

[0008] In this context, it is known, for example, from WO 2021 / 053230 A1, to design the actuating element as part of a push button or push-button, so that pressing the actuating element opens the locking device and allows the locking part to be separated from the housing again. Comparable locking devices are also known for two or more locking parts, for example for multi-strap connections in a 3-point or 5-point seat belt.

[0009] The purpose of the proposed solution is to provide a locking device that is easy to use, enables a secure and reliable connection of the locking part to the housing in a closed position, and is comparatively inexpensive to manufacture.

[0010] This problem is solved with a locking device of claim 1.

[0011] A locking device comprising a housing and at least one locking element is proposed, wherein the at least one locking element has at least one plug-in section for connecting the at least one locking element to the housing. Furthermore, the locking device includes at least one locking element adjustable on, and in particular within, the housing between a locking position and an unlocking position, and an actuating element adjustable on the housing between a rest position and a release position. To connect the at least one locking element to the housing and thus to enable the at least one locking element to assume a closed position on the housing, the at least one locking element can be plugged into the housing via its at least one plug-in section.The at least one locking element can be positively connected to the at least one plug-in section attached to the housing by adjusting it to its locking position, in order to secure the locking part attached to the housing in the closed position. The positive connection between the at least one locking element and the at least one plug-in section can only be released by adjusting the actuating element from a rest position to its release position. In the proposed solution, the at least one locking element is furthermore held on the actuating element for adjustment between the rest position and the release position, and is also adjustably mounted on the actuating element between the locking position and the unlocking position.

[0012] P 0348 WO FID430WO Page 3

[0013] The proposed solution is based on the fundamental idea of ​​arranging the locking element on the actuating element in such a way that, when the actuating element is moved from its rest position to its release position, it also moves the at least one locking element, and the at least one locking element is adjustably mounted on the actuating element, so that the at least one locking element is additionally adjustable on the actuating element between its locking position and its unlocking position. This implies that the direction of actuation along which the actuating element is adjustable on the housing between its rest position and its release position differs from the direction of adjustment along which the at least one locking element is adjustable between its locking position and its unlocking position.This makes the locking device more convenient for a user to handle manually, in order to release the locking mechanism of at least one locking part on the housing via the actuating element.

[0014] In particular, it can be provided that, when a load is applied to the locking element in the closed position, at least one locking element can absorb a force resulting from the load and transfer it into the housing. The adjustable mounting of the locking element on the actuating element makes it relatively easy to implement such force transmission, as it is simpler to ensure that an applied force does not lead to an unwanted opening of the locking device.

[0015] In one embodiment, the at least one locking element is pivotably mounted on the actuating element. The at least one locking element can thus pivot on the actuating element to move from its locked position to its unlocked position, or vice versa. A pivot axis of the at least one locking element, about which it is pivotably mounted on the actuating element, can run parallel to an actuation direction along which the actuating element on the housing can be adjusted from its rest position to its release position. For example, the actuating element on the housing can then be displaced along a straight actuation direction between its rest position and its release position.When the actuating element is used to open the locking device, at least one locking element is adjusted along the direction of actuation, i.e., moved along with it, and also shifted by one degree relative to the other.

[0016] P 0348 WO FID430WO Page 4

[0017] The actuation direction is pivoted parallel to the pivot axis in order to reach its unlocking position and release at least one locking part.

[0018] For example, the actuating element has a bearing section that defines a physical pivot axis about which the at least one locking element can pivot between the locking position and the unlocking position. Such a bearing section can be formed on the actuating element, for example, as a pin or a circular cylindrical bearing section.

[0019] In one embodiment, the at least one locking element has a control section designed to interact with an unlocking structure when the actuating element is moved into the release position and the at least one locking element is moved accordingly. This interaction forces the at least one (also moved) locking element into its unlocked position when the actuating element moves into the release position. Consequently, in this embodiment, the interaction of the control section and the unlocking structure results in the at least one locking element being moved into its unlocked position when the actuating element moves into its release position.For example, the actuating element can have an actuating element body with which the at least one locking element is adjustable along the actuating direction and relative to which the at least one locking element moves from the locked position to the unlocked position via the interaction of its control section with the unlocking structure. In the unlocked position, the at least one locking element is no longer positively connected to the at least one plug-in section, and thus the at least one locking part is released for separation from the housing.

[0020] The unlocking mechanism can, for example, be located on the at least one locking element. Alternatively, the unlocking mechanism can be located on a part of the housing. If the unlocking mechanism is located on the at least one locking element, interaction between the control section and the unlocking mechanism is only possible when the at least one locking element is attached to the housing. In contrast, if the unlocking mechanism is located on a part of the housing itself, the adjustment of the at least one locking element to its unlocked position when the actuating element is moved to the release position can occur regardless of whether the locking element is attached to the housing or not.

[0021] P 0348 WO FID430WO Page 5

[0022] In one embodiment, the unlocking structure is ramp-shaped. The unlocking structure can thus define, for example, a ramp onto which the control section of the at least one locking element encounters when the actuating element is moved into the release position, and along which the control section is then guided during further actuation of the actuating element. The resulting motion component imposed on the control section at the ramp, typically transverse to the actuation direction of the actuating element, then results in the at least one locking element being moved into its unlocked position.

[0023] In one embodiment, the control section is accordingly provided, for example, to impose an adjustment with a movement component on at least one locking element via the interaction of the control section with the unlocking structure, which runs perpendicular to an actuation direction along which the actuating element on the housing can be adjusted from its rest position to the release position.

[0024] Alternatively or additionally, the control section can be designed to force the at least one locking element into a release gap in a side wall section of the housing via the interaction of the control section with the release structure. Thus, the interaction of the control section with the release structure ensures that the control section moves into a release gap in a side wall section of the housing. This release gap, for example, is what makes it possible for the at least one locking element to move into the unlocked position. Conversely, movement of the control section is blocked by at least one area of ​​the side wall section adjacent to the release gap.Consequently, if the control section is not located within the area of ​​the release gap, adjustment of the at least one locking element into the unlocked position is blocked via portions of the housing-side side wall section. As long as the actuating element has not yet assumed its release position or is not yet at a defined distance from the release position, the control section cannot be displaced relative to the side wall section, and thus the at least one locking element cannot be moved into its unlocked position. This supports the conclusion that the locking element can only be engaged in exactly one position.

[0025] P 0348 WO FID430WO Page 6

[0026] adjustment position or in several precisely defined adjustment positions, from its locking position to its unlocking position.

[0027] The at least one locking element can have a locking section designed to engage behind a locking area on the at least one plug-in section for a positive-locking connection. Such a positive-locking connection between the locking element and the plug-in section can assist in securing the locking part to the housing by preventing displacement of the locking part over the engaging locking section of the at least one locking element without the locking element being moved into its unlocked position.

[0028] Alternatively or additionally, one embodiment provides that at least one locking element can be plugged into (and thus attached to) the housing along a connection direction that runs at an angle of 5° to 175° to an actuation direction along which the actuating element on the housing can be adjusted from its rest position to the release position. In such an embodiment, the locking element is therefore not attached to the housing parallel to the actuation direction of the actuating element. Such a configuration is particularly advantageous with regard to the possible provision of a multi-strap connection via the locking device.

[0029] Alternatively or additionally, in one embodiment, at least one locking element can be plugged into the housing along a connection direction that runs essentially or exactly perpendicular to a pivot axis about which the at least one locking element can pivot between the locked and unlocked positions. For example, the at least one locking element can be plugged into the housing laterally along a plane in which, or parallel to which, the pivot axis of the at least one locking element runs.

[0030] To conveniently secure the at least one locking element attached to the housing in a closed position, one embodiment provides that the at least one locking element is biased into the locked position in the rest position of the actuating element and, when the at least one locking element is attached to the housing, is first adjustable to its unlocked position and automatically returns to the locked position when the at least one

[0031] P 0348 WO FID430WO Page 7

[0032] The locking element is attached to the housing. In a disconnected state, where the at least one locking element is not (yet) connected to the housing and the actuating element is in its rest position, the at least one locking element is consequently in the locked position. Attaching the at least one locking element to the housing allows the at least one locking element to be moved into the unlocked position, but it then returns to the locked position when the locking element assumes a closed position relative to the housing. In this locked position, the at least one locking element is positively connected to the plug-in section and thus secures the at least one locking element to the housing until it is released by moving the actuating element into the release position.

[0033] In this context, it can also be provided that the at least one locking element is adjustable from the locked position to the unlocked position in both the release position and the rest position of the actuating element. The fundamental adjustability of the at least one locking element between the locked and unlocked positions in both the release position and the rest position of the actuating element can further facilitate the convenient attachment of the locking part to the housing, simultaneously creating a positive connection with the locking element without requiring the actuating element to be moved from its rest position.Simultaneously, adjusting the actuating element to the release position allows for a controlled separation of the positive-locking connection (and any associated locking mechanism between the housing and the locking element). It is understood that adjusting the actuating element to the unlocking position is only possible when it is in its rest position and at least one locking element is not connected to the housing.

[0034] In an embodiment in which the at least one locking element has a control section for adjusting the locking element to its unlocking position, it can additionally be provided that this control section is located at or opposite an adjustment gap in the side wall section of the housing when the actuator is in its rest position. In this way, when the at least one locking element is connected to the housing, the control section of the at least one locking element can be moved into the adjustment gap in the actuator's rest position to facilitate the adjustment.

[0035] P 0348 WO FID430WO Page 8 of the locking element allows movement into the unlocking position. The adjustment gap is then spaced apart from the release gap for the release position of the actuating element. Through the two different gaps in the side wall section, the adjustment gap on the one hand and the release gap on the other, the control section of at least one locking element thus only allows mechanical movement of the locking element from the locked position to the unlocked position in the area of ​​the rest position and the release position of the actuating element.

[0036] The at least one locking element can be displaced from the locked position to the unlocked position by the at least one plug-in section in the rest position of the actuating element when the at least one locking part is plugged into the housing. The displacement of the at least one locking element into its unlocked position occurs, with the locking element pre-loaded in the locked position, against a force with which the at least one locking element is biased into the locked position.

[0037] In principle, the at least one locking element can be mechanically and / or magnetically biased into its locking position in the rest position of the actuating element. For example, at least one spring element is provided for mechanical biasing of the at least one locking element into the locking position. For magnetic biasing of the at least one locking element into the locking position, the at least one locking element can be at least partially magnetic and / or have at least one magnetic element. This includes, for example, the at least one locking element being made entirely or partially of a ferromagnetic material or being designed as a permanent magnet, so that a magnetic device on the housing can magnetically interact with the locking element.In the case of a magnetic element of the locking mechanism, the magnetic element can also be made of a ferromagnetic material or be a permanent magnet. For example, the magnetic element can be designed as a steel insert, particularly in the form of a steel or sheet metal plate.

[0038] For the magnetic preloading of the at least one locking element into its locking position on the housing, one embodiment provides, for example, that the at least partially magnetic locking element or the at least one magnetic element of the locking element is connected with a

[0039] P 0348 WO FID430WO Page 9

[0040] The magnetic device of the actuating element and / or interacts magnetically with a magnetic device of the locking part. Via one or more magnets of the actuating element's magnetic device, the at least one locking element, which is adjustable on the actuating element, is always biased towards its locking position and thus automatically assumes the locking position. In this embodiment, the actuating element therefore integrates the additional function of magnetically biasing the at least one locking element into its locking position. If—alternatively or additionally—the locking element is biased via a magnetic device of the at least one locking part, a corresponding magnetic bias force is present, at least in the closed position, or is greater when the locking part is attached to the housing.In particular, it may be provided that a magnetic device of the locking part interacts with the at least partially magnetic locking element or the at least one magnetic element of the locking element, as well as a combination of magnets of a magnetic device of the locking part and magnets of a magnetic device of the actuating element.

[0041] Alternatively or additionally, the housing and / or the actuating element can have a first magnetic device that magnetically attracts a second magnetic device of the at least one locking part when the at least one locking part is connected. The locking part thus assumes a closed position on the housing by the mutually attracting first and second magnetic devices. This includes, in particular, an embodiment in which a user only needs to place the at least one locking part against the housing along a connection direction in the area of ​​a plug opening provided for the plug section, and then, under the action of the first and second magnetic devices, the locking part automatically assumes the closed position on the housing, in which the positive locking connection of the plug section with the locking element then occurs – again automatically.

[0042] A first magnetic device of the actuating element, which magnetically attracts a second magnetic device of the at least one locking part when the at least one locking part is connected to the housing, can also magnetically attract the partially magnetic locking element or the at least one magnetic element of the locking element in order to magnetically bias the at least one locking element into its locking position. The first magnetic device of the

[0043] P 0348 WO FID430WO Page 10

[0044] In this design variant, the actuating element thus performs a dual function. On the one hand, the first magnetic element of the actuating element interacts with the second magnetic element of the locking part to assist the locking part in assuming the closed position. On the other hand, the first magnetic element of the actuating element serves to magnetically pre-tension the locking element into the locked position.

[0045] In one embodiment, the actuating element has at least one ejection magnet which, in the release position of the actuating element, interacts magnetically with the second magnet of the at least one locking part in a repulsive manner. The ejection magnet and the second magnet can thus be oriented with like poles facing each other in the release position of the actuating element. In this way, an ejection force is magnetically applied to the at least one locking part by the ejection magnet of the actuating element in the release position. This force loads the locking part against its original direction of connection, thereby assisting or even causing the separation of the locking part from the housing.Because the ejection magnet only interacts magnetically with the second magnet of the locking element when the actuating element is moved into the release position, the repulsive effect is only triggered when the actuating element is moved into the release position, and possibly even only when the actuating element reaches the release position. Consequently, when the actuating element is moved into the release position, the ejection magnet is positioned relative to the second magnet of the locking element attached to the housing in such a way that the ejection magnet and the second magnet interact in a repulsive manner, thus exerting a force on the locking element away from the housing in the opposite direction to the connection direction along which the locking element can be attached.Without a positive locking connection with the plug-in section, the locking part can be moved towards the housing by magnetic force, for example by ejecting the plug-in section from a plug-in opening in the housing.

[0046] In one embodiment, the ejection magnet device can also be designed to magnetically preload at least one locking element into its locking position. The ejection magnet device can thus be equipped with at least a partially magnetic locking element or at least one magnetic element of the

[0047] P 0348 WO FID430WO Page 11

[0048] The locking element magnetically attracts each other to pre-tension the locking element into its locking position.

[0049] The actuating element can, in principle, be preloaded into its rest position. For example, a mechanical preload into the rest position can be provided by at least one spring element of the locking device. Such a spring element is, for example, designed as a coil spring. The at least one spring element can, for example, be supported on one side by the actuating element and on the other side by a part of the housing, thereby applying a preload force to the actuating element in the direction of its rest position. Consequently, without an actuating force exceeding the preload force of the at least one spring element being applied to the actuating element, the actuating element is always returned to its rest position by the action of the at least one spring element.An actuating element designed in the manner of a push button or push-button is thus always automatically pushed back into its rest position from the housing after being actuated to release the locking part.

[0050] In principle, it can be provided that the actuating element, designed as a push button or push-button, can be adjusted into the housing to reach its release position.

[0051] In one embodiment of the locking device, a free travel path is provided, which the actuating element must bridge from its rest position towards the release position before further adjustment of the actuating element towards the release position moves the at least one locking element towards the unlock position. In such an embodiment, a user must therefore first move the actuating element from its rest position by a predetermined portion of the total travel between the rest position and the release position before an adjustment mechanism encompassing the actuating element of the locking device acts on the at least one locking element and moves it towards its unlock position. This provides an additional safeguard against accidental unlocking of the locking device.Immediately upon moving the actuating element from its rest position towards the release position, there is consequently no movement of the at least one locking element. Rather, the at least one locking element is only capable of movement from the locking position towards the release position after a subsequent movement.

[0052] P 0348 WO FID430WO Page 12

[0053] The unlock position is provided when the actuating element has been moved by a predetermined portion of the total adjustment range towards its release position and continues to be moved. For example, the portion to be bridged corresponds to at least 20%, 30%, 40%, 50%, or 60% of the total adjustment range.

[0054] In one embodiment, to further secure the locking element to the housing, at least one support surface is formed on the at least one locking element. When the locking element is attached to the housing, this support surface faces at least one counter surface of the housing. The at least one support surface and / or the at least one counter surface has an inclined profile and is therefore designed with an angled shape. Furthermore, the at least one support surface and the at least one counter surface are configured to make self-reinforcing and clamping contact when a load is applied to the locking element attached to the housing. For example, in the closed position of the locking element, the at least one support surface is spaced apart from the at least one counter surface, such that a narrow gap exists between the support surface and the counter surface.If, as a result of a load acting on at least one locking element opposite to a connection direction, a gap defined by the respective gap is bridged, the at least one support surface comes into contact with the at least one counter surface and rests against it. The contact of the support surface with the counter surface then creates a self-reinforcing, clamping connection under load, which prevents the locking element from being removed from the housing.

[0055] In one embodiment, the housing is provided with at least one first guide section, which is designed to provide sliding guidance for at least one second guide section of the at least one plug-in section when the at least one locking element is plugged into the housing. Thus, the first and second guide sections provide physical guidance for the plug-in section and therefore the locking element when it is attached to the housing. This makes it easier to prevent the locking element from being incorrectly positioned on the housing.

[0056] For example, it may be provided that the first guide section projects transversely to a connection direction along which at least one locking part can be plugged into the housing and is intended to engage with the second guide section.

[0057] P 0348 WO FID430WO Page 13 when the at least one locking part with its at least one plug-in section is plugged into the housing. For example, the second guide section can be designed as a channel-shaped or groove-shaped recess on the section into which the first projecting guide section of the housing engages when the locking part is attached to the housing and moved into an end position in which locking occurs via the at least one locking element. Conversely, it can also be provided that the second locking part-side guide section projects transversely to the connection direction and is designed to engage with the first housing-side guide section when the at least one locking part with its at least one check section is plugged into the housing.Therefore, for example, a second guide section projecting laterally transversely to the connection direction can be provided on the section of track, which is moved along a channel-shaped or groove-shaped recess of the first guide section of the housing. For example, a projecting (first or second) guide section is designed to be pin-shaped or longitudinally extended, e.g., parallel to the connection direction, in particular web-shaped, strip-shaped, or rib-shaped.

[0058] In principle, the first and second guide sections can be designed and configured to counteract tilting of the at least one locking element relative to the housing when the at least one locking element is attached to the housing with its at least one section. Accordingly, the guide sections can be designed to interact during the attachment of the at least one locking element to the housing, and the first and second guide sections together mechanically counteract tilting of the locking element relative to the housing. Thus, the first and second guide sections can hold the locking element in a tilt-free position when it is attached to the housing. Such tilting is generally undesirable in order to ensure that the at least one locking element reliably engages with the locking element and is subjected to as few lateral forces as possible.

[0059] The locking device can also include more than one locking element in one embodiment. For example, if at least two locking elements are provided, each can be plugged into the housing (for example, into one of two plug-in openings on the housing) via a plug-in section. In their respective closed positions, the at least two locking elements are connected to the housing by a common locking element or each by one of several

[0060] P 0348 WO FID430WO Page 14

[0061] The locking elements can be positively connected to securely fix the locking parts to the housing. A single actuating element can also be provided for the simultaneous release of each positive connection between the locking element(s) and the other locking parts. However, a variant is also conceivable in which at least one actuating element is provided for the separate and thus individual release of a locking part from the housing.

[0062] In the case of multiple (at least two) locking components, it is generally possible to have only a single first magnetic device (for example, centrally located on the actuating element) and / or a single ejection magnetic device (for example, centrally located on the actuating element), each of which interacts with two second magnetic devices on the two locking components. Alternatively, two first magnetic devices, each of which is assigned to a second magnetic device of a locking component, and / or two ejection magnetic devices on the actuating element, each of which is assigned to a second magnetic device of a locking component, may be provided.

[0063] As explained in the introduction, at least one of the locking elements can be designed, for example, for connection to a strap or belt, securing this strap or belt to the housing. This locking element then has at least one strap attachment section to which a strap or belt can be fastened. Optionally, the housing itself can also be designed with a strap attachment point.

[0064] In one embodiment, at least one fastening element is provided for connection to an additional strap section, which is connected to the same strap or belt, or to another strap or belt. Such an embodiment is advantageous, for example, in a multi-strap connection provided via the fastening device. One fastening element can be designed for securing a waist belt, and the additional strap section for securing a shoulder strap to the housing. The fastening device can thus be designed, for example, as a 5-point buckle, where shoulder straps are secured to the housing via two additional strap sections. The additional strap sections can each be attached to one of two fastening elements that can be plugged into the housing and are designed for securing waist belts, before the two fastening elements are plugged into their respective corresponding openings on the housing.This includes, for example, one.

[0065] P 0348 WO FID430WO Page 15

[0066] A variant design in which the additional strap part can only be attached to and detached from the at least one locking part if the at least one locking part is not connected to the housing.

[0067] In one version, the housing has a strap attachment for connection to a strap or belt. For example, the housing can be designed to be attached to a central strap or belt, in particular a central strap or belt of a 3-point or 5-point harness.

[0068] For example, a dovetail joint can be provided between the additional strap section and a closure part. Such a dovetail joint allows the additional strap section to be attached to the closure part, which is not yet connected to the housing, relatively easily and securely.

[0069] In one embodiment, the additional strap section features a positive locking area that can be connected to a positive locking element on the housing, for example, on an outer surface of the housing, when the locking element with the additional strap section is attached to the housing. In the closed position of the locking element on the housing, there is thus an additional positive locking connection between the additional strap section and the housing, without the additional strap section being connected to the locking element. The positive locking connection between the additional strap section and the housing can be released, for example, by pulling the locking element away from the housing, without requiring separate release by the actuating element.

[0070] The proposed locking device can be used, for example, as a closure for a stroller, child carrier, cargo bike, bicycle trailer, high chair, or child seat. With the proposed configuration of the actuating element and the locking element on a housing to which at least one locking part can be attached, the corresponding closure can be conveniently opened and closed, although this would not be easily possible for a child.

[0071] The attached figures illustrate possible implementation variants of the proposed solution.

[0072] P 0348 WO FID430WO Page 16

[0073] This shows:

[0074] Figures 1 A-1 B Exploded views of an embodiment of a proposed locking device;

[0075] Figure 2A shows a top view of the locking device of Figures 1A and 1B, with two locking parts and belt parts attached thereto in a state unconnected to a housing of the locking device;

[0076] Figure 2B shows a front view of the locking device of Figure 2A;

[0077] Figure 2C shows a sectional view of the closing device along the section line CC of Figure 2A;

[0078] Figure 2D shows a sectional view of the locking device along the section line DD of Figure 2B;

[0079] Figure 2E is a top view of the locking device of Figure 2A without showing the upper part of the housing;

[0080] Figure 2F shows the locking device of Figure 2A in a bottom view without showing a lower part of the housing;

[0081] Figure 3A shows the locking device in top view when the two locking parts are attached to the housing;

[0082] Figure 3B shows a sectional view of the locking device along the

[0083] Section line BB of figure 3A;

[0084] Figure 3C shows a sectional view of the locking device along the

[0085] Section line CC of figure 3A;

[0086] Figure 3D shows a front view of the locking device of Figure 3A;

[0087] Figure 3E shows a sectional view of the locking device along the section line EE Figure 3D;

[0088] P 0348 WO FID430WO Page 17

[0089] Figure 3F shows a top view of the locking device of Figure 3A without

[0090] Illustration of the upper part of the housing; Figure 3G a bottom view of the locking device of Figure 3A without

[0091] Illustration of the lower part of the housing;

[0092] Figures 4A-4G, in views corresponding to Figures 3A to 3G, show the locking device with locking parts further attached to the housing, in front of a positive locking connection between a

[0093] Plug-in section of a respective locking part and an associated locking element of the housing;

[0094] Figures 5A-5G, in views corresponding to Figures 3A-3G and 4A-4G, show the locking device with the locking parts in a

[0095] Closed position in which the locking parts are positively secured to the housing via the locking elements; Figures 6A-6G corresponding to Figures 3A-3G, 4A-4G and 5A-5G

[0096] Views of the locking device with an actuating element slidably mounted on the housing at the beginning of an adjustment movement towards a release position; Figures 7A-7G in views corresponding to Figures 3A-3G, 4A-4G, 5A-5G and 6A-6G show the locking device with the actuating element in its release position, in which the locking elements are no longer positively engaged with plug-in sections of the locking parts inserted into the housing;

[0097] Figures 8A-8G in views corresponding to Figures 3A-3G, 4A-4G, 5A-5G, 6A-6G and 7A-7G show the locking device with the actuating element at the beginning of a return movement towards a rest position and the locking parts during a

[0098] Ejection from the housing under the influence of ejection magnet devices in the release position

[0099] P 0348 WO FID430WO page 18 present actuating element, which interacts magnetically with second magnetic devices of the locking parts;

[0100] Figures 9A-9B Exploded views of another embodiment of a proposed locking device;

[0101] Figure 10, in a view corresponding to Figure 2A, shows an unconnected

[0102] State of the locking device of Figures 9A and 9B;

[0103] Figure 1 1 a sectional view along the section line CC of Figure 10;

[0104] Figure 12 in a front view corresponding to the 3D figure.

[0105] Variant of the locking device shown in Figures 9A to 11 when attaching the two locking parts to the housing;

[0106] Figure 13 shows a sectional view along the section line EE of Figure 12.

[0107] Figures 1A and 1B show different exploded views of various embodiments of a proposed locking device, which is intended, for example, as a buckle for a 5-point harness. The locking device comprises a housing 1 (see also Figure 2A), which includes a lower housing part 10 and an upper housing part 11, together defining a housing space for receiving a locking assembly with an actuating element 4. The upper housing part 11 defines two opposing insertion openings 112.1, 111.2, to which a locking element 21, 2.2 can be attached to the housing 1.

[0108] Each closure element 2.1, 2.2 has a closure element body 20.1, 20.2, on which, among other things, a belt attachment section 201.1, 201.2 (e.g., for a waist belt) is formed. In the illustrated embodiment, the belt attachment section 201.1, 201.2 has, by way of example, a belt opening and a bridge for encircling a section of a belt or strap, which can be secured to the respective closure element 2.1 or 2.2.

[0109] Each of the locking element bodies 20.1 and 20.2 also has a plug-in section 21.1 or 21.2 which can be plugged into a corresponding plug-in opening 112.1 or 112.2 of the housing 1. Each plug-in section 21.1 or 21.2 has a locking area 210.1.

[0110] P 0348 WO FID430WO page 19 or 210.2 shaped, over which the locking part 2.1 attached to the housing 1 or

[0111] 2.2 can be locked to the housing 1.

[0112] An additional strap section 3.1 or 3.2 (e.g., for a shoulder strap) can be attached to a connecting section 203.1 or 203.2 of the closure body 20.1 or 20.2. For this purpose, the connecting section 203.1 or 203.2 is designed with a positive-locking area in the form of a dovetail groove. A connecting web 32.1 or 32.2 of an associated additional strap section 3.1, 3.2 can be positively inserted into this dovetail groove to positively connect and secure the respective additional strap section 3.1, 3.2 to a closure part 2.1 or 2.2 before the respective closure part 2.1 or 2.2 is attached to the housing 1.

[0113] Each additional strap section 3.1, 3.2 also has a strap attachment section, via which a strap or belt can also be secured. Furthermore, a strap attachment 101 is also provided on the underside of the lower housing part 10, for example, to secure the housing 1 to a central strap or belt.

[0114] Once the locking parts 2.1 and 2.2 are inserted into the housing 1, the plug-in sections 21.1 and 21.2 are locked to the housing 1 at their respective locking areas 210.1 and 210.2 by a locking element 5.1 or 5.2. The locking elements 5.1 and 5.2 are pivotally mounted on an actuating element 4 via pivot bearing sections 54.1 and 54.2, respectively. The pivot axes D1 and D2, about which the locking elements 5.1 and 5.2 can pivot, are parallel to each other and parallel to an actuating direction F (see in particular Figures 6A to 7G), along which the actuating element 4 is slidably mounted on the housing 1. Through an actuating element opening 1 14 in the housing upper part 11, the actuating element 4 with an actuating element body 40 can be moved into the housing 1 into a release position by a user in order to release a locking of the locking elements 5.1 , 5.2 and the locking parts 2.1 and 2.2 to release, so that the locking parts 2.1 and 2.2 can be removed from the housing 1 again. The actuating element body 40 also defines two bearing sections in the form of bearing pins 45.1, 45.2, on which the locking elements 5.1 and 5.2 are pivotably mounted on the actuating element 4 via their pivot bearing sections 54.1 and 54.2 (see in particular Figure 2C).

[0115] The lower housing part 10 defines a base surface 100 facing the upper housing part 11, on which guides 104A and 104B are attached for the sliding guidance of the

[0116] P 0348 WO FID430WO Page 20

[0117] Actuating element 4 are formed. Furthermore, two opposing side wall sections 102.1, 102.2 are formed on the base surface 100. These

[0118] Side wall sections 102.1 and 102.2 define positions for the locking elements 5.1 and 5.2, which are adjustable together with the actuating element 4, at which the locking elements 5.1 and 5.2 can be pivoted from a locked position to an unlocked position. For this purpose, each side wall section 102.1 ,

[0119] 102.2 Adjustment gaps and release gaps 1050.1 and 1051.1 as well as 1050.2 and 1051.2 are formed spaced apart from each other along the direction of actuation F. Between these gaps 1050.1 / 1051.1 and 1050.2 / 1051.2, on each side wall section 102.1 or

[0120] On the inside of 102.2, a ramp 105.1 or 105.2 is formed. This ramp 105.1, 105.2 defines a ramp-shaped adjustment contour that assists the return of a locking element 5.1, 5.2 to its locking position when the actuating element 4 is returned from a release position to a rest position under the action of a return spring 6 designed as a coil spring. This will be explained in more detail below.

[0121] The actuating element body 40 has recesses for receiving magnetic devices. In the illustrated embodiment, the actuating element body 40 carries two first magnetic devices M4.1 and M4.2, one of which, M4.1, is specifically designed to interact with a second magnetic device M2.1 of one of the locking parts 2.1. The other first magnetic device, M4.2, is specifically designed to interact with a second magnetic device M2.2 of the other locking part 2.2. The second magnetic devices M2.1 and M2.2, arranged in a recess on the respective plug section 21.1 or 21.2, are polarized opposite to the first magnetic devices M4.1 and M4.2, so that the first and second magnetic devices M4.1 / M2.1 and M4.2 / M2.2 attract each other magnetically when the locking parts 2.1 and 2.2 are connected to the housing 1.The first and second magnetic devices M4.1 / M2.1 and M4.2 / M2.2 thus magnetically support the assumption of a closed position of the locking parts 2.1 ,.

[0122] 2.2 on the housing 1, when the locking parts 2.1 , 2.2 are attached to the housing 1.

[0123] The first magnetic devices M4.1 and M4.2 are further intended to interact with magnetic elements 55.1 and 55.2 of the locking elements 5.1 and 5.2. Each magnetic element 55.1, 55.2 is provided here as a steel insert in the form of a steel plate on a respective locking element 5.1, 5.2. The first

[0124] P 0348 WO FID430WO Page 21

[0125] The magnetic devices M4.1 and M4.2 of the actuating element 4 interact magnetically with these steel plates 55.1 and 55.2 to pre-tension the locking elements 5.1 and 5.2 into their locking position on the actuating element 4.

[0126] The actuating element body 40 of the actuating element 4 further carries two ejection magnet devices MA4.1 and MA4.2. With respect to the actuating direction F of the actuating element 4, the ejection magnet devices MA4.1 and MA4.2 are arranged behind the first magnet devices M4.1 and M4.2 on the actuating element 4. In a release position of the actuating element 4, in which the actuating element 4 is moved into the housing 1 by a user in the manner of a push button or lever, the ejection magnet devices MA4.1 and MA4.2 interact magnetically with a corresponding second magnet device 2.1 or 2.2 of a locking part 2.1 or 2.2 attached to the housing 1. Consequently, like poles are opposite each other. The locking parts 2.1 and 2.2 are thus ejected by the ejection magnet devices MA4.1 and MA4.2.2 in the release position of the actuating element 4 is subjected to a magnetically induced ejection force, under which the locking parts 2.1 and 2.2 are biased away from the housing 1. Under the action of the ejection magnet devices MA4.1 and MA4.2, the plug sections 21.1 and 21.2 can thus be ejected from the plug openings 112.1 and 112.2 by magnetic force when the actuating element 4 is manually moved into its release position by a user.

[0127] In principle, the ejection magnet devices MA4.1 and MA4.2 can also be used to magnetically pre-tension the locking elements 5.1 and 5.2 into their respective locking positions. The ejection magnet devices MA4.1 and MA4.2 can thus, for example, interact magnetically with the steel plates 55.1 and 55.2 to pre-tension the locking elements 5.1 and 5.2 into their respective locking positions.

[0128] Figures 2A to 2F show, from different perspectives, the locking device during the attachment of the locking parts 2.1 and 2.2 to the housing 1 along the converging connecting elements R1.1 and R1.2. The additional strap parts 3.1 and 3.2 are already attached to the locking parts 2.1 and 2.2. As can be seen particularly from the sectional views in Figures 2C and 2D, the actuating element 4 is in a rest position on the housing 1, in which the actuating element 4 is pre-tensioned by the return spring 6. For this purpose, the

[0129] P 0348 WO FID430WO Page 22

[0130] The return spring 6 is supported at one end on an internally projecting spring bearing pin 16 of the upper housing part 11 and at the other end on a spring bearing pin 46 of the actuating element 4, which faces the spring bearing pin 16 on the housing side and projects from an end face of the actuating element body 40. The two locking elements 5.1 and 5.2 are biased into their locking position by the first magnetic devices M4.1 and M4.2 on the actuating element 4, as shown in Figure 2C, such that the locking sections 52.1, 52.2 of the locking elements 5.1, 5.2 are each spaced at a maximum distance from the base surface 100 of the lower housing part 10. The plug-in sections 21.1 and 21.2 are drawn towards the actuating element 4 and into the plug-in openings 1 12.1 and 112.2, thereby bringing the locking parts 2.12 into the closed position.2 on the housing 1. A magnetic preload of the locking elements 5.1, 5.2 can also be achieved via a magnetic device M2.1, M2.2 of the locking parts 2.1, 2.2. Thus, an applied magnetic preload force can be stronger, at least in the closed position, if the locking parts 2.1, 2.2 are attached to the housing 1 and the locking part-side magnetic devices M2.1, M2.2 are positioned within the housing 1 relative to the locking elements 5.1, 5.2 such that the locking part-side magnetic devices M2.1, M2.2 each magnetically attract an associated steel plate 55.1, 55.2 of a locking element 5.1, 5.2.

[0131] When the plug-in sections 21.1, 21.2 are inserted into the respective plug-in opening 112.1, 112.2 of the housing 1, the chamfered end faces of each plug-in section 21.1, 21.2 come into contact within the housing 1 with a locking lug of a corresponding locking section 52.1 or 52.21 of a locking element 5.1, 5.2. This causes the locking elements 5.1 and 5.2 to be displaced transversely to the connection direction R1.1 or R1.2 in the direction of the base surface 100 of the lower housing part 10. This results in a pivoting movement of a locking element 5.1, 5.2 about a respective pivot axis D1 or D2 defined by the bearing pin 45.1 or 45.2 with respect to the actuating element body 40 along a pivot direction R5.1 or R5.2. As can be seen in particular from the illustration in Figure 3B, the locking elements 5.1 and 5.2 are pivoted about opposite pivot directions R5.1, R5.2.The pivoting movement along the respective pivoting direction R5.1 or R5.2 causes a locking element 5.1 , 5.2 to be moved from the previously assumed locking position to an unlocking position in order to.

[0132] P 0348 WO FID430WO Page 23 to allow further immersion of a plug section 21 .1 or 21 .2 into the associated plug opening 1 12.1 or 1 12.2.

[0133] As can be seen particularly from the illustration in Figure 3C, the pivoting movement of a locking element 5.1 and 5.2 in the rest position of the actuating element 4 is only possible because a control section projecting laterally from a respective locking section 52.1 or 52.2, in the form of a control pin 520.1 or 520.2, is opposite the adjustment gap 1050.1 or 1050.2 of the respective side wall section 102.1 or 102.2 of the lower housing part 10. The control pin 520.1 or 520.2 is thus controlled by the side wall section 102.1 or

[0134] 102.2 is not blocked against adjustment transverse to the connection direction R1.1 or R1.2 in the direction of the base surface 100 of the lower housing part 10. The sectional view in Figure 3C illustrates this by way of example for one side of the housing 1 with the locking element 5.2.

[0135] By adjusting the locking elements 5.1 and 5.2 into their unlocked position under the action of the plug-in sections 21.1 and 21.2 of the locking parts 2.1 and 2.2 inserted into the plug-in openings 1 12.1 , 112.2, the locking areas 210.1 and

[0136] 210.2 of the plug-in sections 21.1 and 21.2 are pushed at least so far over the locking sections 52.1 and 52.2 of the locking elements 5.1 and 5.2 that the locking parts 2.1 and 2.2 can assume their respective closed position on the housing 1 without being prevented from doing so by the locking elements 5.1 , 5.2. The respective magnetic force applied by the mutually attracting first and second magnetic devices M4.1 / M2.1 and M4.2 / M2.2 along the respective connection direction R1.1 or R1.2 is in each case greater than a magnetic force by which, with a first magnetic device M4.2 and M4.2 in conjunction with the steel plates 55.1 and 55.2 of the locking elements 5.1 and 5.2, the locking elements 5.1 and 5.2 are magnetically biased into their locking position (see, for example, Figures 4A to 4G).

[0137] When the two locking parts 2.1 and 2.2 are inserted maximally into the housing 1, the locking elements 5.1 and 5.2 can pivot back into their locking position along opposite pivot directions -R5.1 and -R5.2 under the action of the first magnetic devices M4.1 and M4.2 of the actuating element 4, which remains in its rest position (see in particular the sectional view of Figure 5B). In the closed position of the locking parts 2.1 and 2.2 on the housing 1, the

[0138] P 0348 WO FID430WO Page 24

[0139] The locking parts 2.1 and 2.2 are secured to the housing via the locking elements 5.1 and 5.2. This closed position is illustrated in Figures 5A to 5G.

[0140] In the locked position of the locking elements 5.1 and 5.2, the locking elements 5.1 and 5.2 engage with their locking sections 52.1 and 52.2 in a form-fitting manner in the locking areas 210.1 and 210.2 of the plug-in sections 21.1 and

[0141] 21.2. In the illustrated embodiment, a locking lug of a locking element-side locking section 52.1 engages in each case, or

[0142] 52.2 into a longitudinal groove on the locking area 210.1 or 210.2 of a plug-in section 21.1 or 21.2 and thus engages behind a web-shaped web projecting towards the base surface 100 on the locking area 210.1 , 210.2. A locking part 2.1 or 2.2 can therefore no longer be pulled out of the respective plug-in opening 1 12.1 or 112.2 without first moving an associated locking element 5.1 , 5.2 into its unlocking position.

[0143] Each locking section 52.1, 52.2 has a support surface 521.1, 521.2 which – at least in the rest position of the actuating element 4 and the locking position of an associated locking element 5.1, 5.2 – is always opposite at least one counter surface in the form of an inclined surface, in this case several and, by way of example, three inclined inclined surfaces 105A.1, 105B.1, 105C.1 or 105A.2, 105B.2, 105C.2 of a side wall section 102.1 or 102.2 (see in particular the sectional view Figure 5B and Figures 1A, 1B and 2C). Each support surface 521.1 , 521.2 is spaced apart from the associated inclined surfaces 105A.1 , 105B.1 , 105C.1 or 105A.2, 105B.2 , 105C.2 in the closed position of the respective locking part 2.1 , 2.2, such that between a support surface 521.1 or,

[0144] 521.2 and the associated inclined surfaces 105A.1, 105B.1, 105C.1 or 105A.2, 105B.2, 105C.2. If, as a result of a load acting on a locking element 2.1 or 2.2 opposite to the connection direction R1.1 or R1.2, a clearance defined by the respective gap is bridged, the respective support surface 521.1 or 521.2 of a locking element-side locking section 52.1, 52.2 comes into contact with the opposing inclined surfaces 105A.1, 105B.1, 105C.1 or 105A.2, 105B.2, 105C.2 and rests against them. By placing a support surface 521.1 , 521.2 on an inclined surface 105A.1 , 105B.1 , 105C.1 or 105A.2 , 105B.2 , 105C.2 (here in each case inclined with respect to the base surface 100 and the inside of the housing towards the outside), a self-reinforcing, clamping connection is achieved which counteracts the removal of the locking part 2.1 , 2.2 from the housing 1.

[0145] P 0348 WO FID430WO Page 25

[0146] The inclined surfaces 105A.1, 105B.1, 105C.1 or 105A.2, 105B.2, 105C.2 of a side wall section 102.1 or 102.2 are each separated from one another along the direction of actuation F by the two gaps 1050.1, 1051.1 or 1050.2, 1051.2. An associated support surface 521.1, 521.2 extends on the associated locking element 5.1, 5.2 below the control pin 520.1, 520.2.

[0147] In the illustrated embodiment, a positive locking element projecting from the outside of the housing 1 in the form of a rib-like projection 113 additionally engages positively in a positive locking area in the form of a recess 31.1, 31.2 of the additional belt parts 3.1 and 3.2. The belt parts 3.1 and 3.2 are thereby aligned in a defined position relative to the housing 1 and held therein.

[0148] To unlock and thus open the locking device, so that the locking parts 2.1 and 2.2 can be removed from the housing 1, it is necessary to actuate the actuating element 4 along the actuating direction F, which is illustrated in more detail in Figures 6A to 6G, 7A to 7G and 8A to 8G.

[0149] To facilitate one-handed operation of the locking device by pressing the actuating element 4 into the housing 1 along the actuating direction F, a grip recess 1 15 is provided on the outside of the housing 1 opposite the actuating element 4. To provide sufficient space for one or more fingers to grip the recess, the additional strap sections 3.1, 3.2 are slightly curved in this area. A user can support an index finger and / or a middle finger of one hand on the grip recess 1 15 while pressing the actuating element 4 in along the actuating direction F with their thumb, or conversely, support their thumb while pressing the actuating element 4 in along the actuating direction F with their index finger and / or middle finger.

[0150] As illustrated in Figures 6A to 6G, by actuating the actuating element 4 along the actuating direction F, the actuating element 4 with its actuating element body 40 and the locking elements held therein is

[0151] 5.1 and 5.2 are moved into the housing 1 against the restoring force applied by the return spring 6 and adjusted relative to the locking elements 5.1 and 5.2. During this movement, the locking elements 5.1 and 5.2 remain biased in their locking position via the first magnetic devices M4.1 and M4.2 and slide on the locking surfaces.

[0152] 210.1 and 210.2 of the plug sections 21.1 , 21.2 along the direction of actuation F.

[0153] P 0348 WO FID430WO Page 26

[0154] A free travel distance is provided, which the actuating element 4 must bridge from its rest position towards the release position before further adjustment of the actuating element 4 towards the release position moves the locking elements 5.1, 5.2 towards the unlocking position. A user must therefore first move the actuating element 4 from its rest position by a predetermined portion of the total adjustment range between the rest position and the release position before the adjustment mechanism of the locking device, which encompasses the actuating element, acts on the locking elements 5.1, 5.2 and moves the locking elements 5.1, 5.2 towards their respective positions.

[0155] The unlocking positions can be adjusted. This further prevents accidental unlocking of the locking device. In the illustrated embodiment, the distance to be bridged corresponds to approximately 45% to 60% of the total adjustment travel by which the actuating element 4 can be adjusted between the rest position and the release position.

[0156] Shortly before the actuating element 4 reaches its release position, the laterally projecting control pins 520.1 and 520.2 each engage a release structure formed on a plug section 21.1, 21.2. This is shown in the sectional views of Figures 6C, 7C, and 8C. Here, a release structure of one of the locking parts 2.2 is shown. The release structure is formed by a release chamfer 211.2 on an edge of the plug section 21.2 located in the actuation direction F. The unlocking ramp 211.2 points towards the base surface 100, so that the control pin 520.2, which encounters the unlocking ramp 211.2 and slides along it in the actuation direction F when the actuating element 4 is further actuated, is forced into an adjusting movement with a movement component perpendicular to the actuation direction F towards the base surface 100. This occurs in conjunction with the control pin 520.2 with the unlocking chamfer 21 1.2 of the plug section 21.2, the locking element 5.2 is pivoted about its pivot axis D2 along the pivot direction R5.2 into the unlocked position. By adjusting the actuating element 4 along the actuating direction F, the locking elements 5.1, 5.2 are not only moved together along the actuating direction F, but also, upon reaching the release position, are pivoted by the actuating element 4 about their respective pivot axes D1, D2, parallel to the actuating direction F, into their unlocked position.

[0157] P 0348 WO FID430WO Page 27

[0158] To allow the respective control pin 520.1, 520.2 to be displaced transversely to the actuation direction F in the direction of the base surface 100, the release gap 1051.1 or 1051.2 is provided on the respective side wall section 12.1, 12.2. The respective control pin 520.1, 520.2 can engage in this release gap 1051.1 or 1051.2 when the actuating element 4 has moved sufficiently close to the release position (see in particular Figures 7A to 7G).

[0159] In the release position of the actuating element 4, into which the actuating element 4 has been moved along the actuating direction F by a user, the positive locking between the locking elements 5.1 and 5.2 and the plug-in sections is then

[0160] 21.1 and 21.2 are completely detached. The locking parts 2.1 and 2.2 can therefore be pulled off the housing 1 in the opposite direction to the original connection direction R1.1 or R1.2.

[0161] In the illustrated embodiment, the locking parts 2.1 and 2.2 are magnetically assisted with their plug-in sections 21.1, 21.2 from the plug-in openings.

[0162] 112.1 and 112.2 are ejected when the actuating element 4 reaches its release position. In the release position of the actuating element 4, the ejection magnets MA4.1 and MA4.2, with poles of the same type, are opposite the second magnets M2.1 and M2.2 of the locking parts 2.1, 2.2. An ejection magnet MA4.1, MA4.2 thus interacts with an associated second magnet M2.1 or M2.2 of a locking part inserted into the housing 1.

[0163] 2.1 or 2.2 magnetically repel each other, thus leading to an adjustment of the respective locking part 2.1, 2.2, which is no longer positively connected to a locking element 5.1 or 5.2, along an ejection direction -R1.1, -R1.2 opposite to the connection direction R1.1, R1.2. This is illustrated in Figures 8A to 8C in addition to Figures 7A to 7G.

[0164] If the actuating element 4 is no longer pressed by a user towards its release position, the return spring 6 moves the actuating element 4 back to its release position, this time in the opposite direction to the actuating direction F along a return direction -F as shown in Figures 8A to 8G. During the corresponding return movement along the return direction -F, the control pins 520.1 and 520.2 can each encounter their respective ramp 105.1 or 105.2, provided that the respective locking element 5.1, 5.2 has not yet fully assumed its locking position. Upon impact and sliding along the respective ramp

[0165] P 0348 WO FID430WO Page 28

[0166] The ramp 105.1 or 105.2 then additionally forces a mechanical adjustment into the locking position on the locking elements 5.1 , 5.2.

[0167] In a modification of the embodiment shown in Figures 1A to 8G, it is of course also possible, for example, to provide a single first magnetic device for magnetic interaction with the locking elements 2.1 and 2.2 on the actuating element body 40, instead of two separate first magnetic devices M4.1 and M4.2. Alternatively or additionally, the preloading of the locking elements 5.1 and 5.2 into their locking position can also be achieved mechanically, for example by means of a spring element or several spring elements, wherein a spring element is then supported on the actuating element body 4 and on a locking element 5.1, 5.2.

[0168] While the fastening device shown in the figures is designed as a buckle with the additional strap parts 3.1 and 3.2 for a 5-point harness connection, the additional strap parts 3.1 and 3.2 can also be omitted and the fastening device shown can thus be used for a 3-point harness connection.

[0169] Alternatively, it is also possible that the unlocking structure 21 1.2 for relocating the locking elements 5.1 and 5.2 into their unlocking position when adjusting the actuating element 4 into the release position is not provided on a plug section 21.1 , 21.2 of a locking part 2.1 , 2.2, but on one of the housing parts 10, 1 1 of the housing 1 .

[0170] Figures 9A-9B and 10 to 13 show, in different views, a further development of the locking device 1 of Figures 1A to 8G. Figures 9A and 9B each show an exploded view of the further embodiment from different perspectives. Figure 10, in accordance with Figure 2A, shows the further developed locking device 1 in a top view. Figure 11 shows a sectional view along section line CC of Figure 10. Figure 12, in accordance with Figure 3D, shows a front view of the further developed locking device 1, while Figure 13 shows a sectional view along section line EE of Figure 12. Corresponding components are identified with identical reference numerals.

[0171] In contrast to the embodiment shown in Figures 1A to 8G, the embodiment shown in Figures 9A-9B and 10 to 13 features improved physical guidance for the plug-in sections 21.1 and 21.2 of the two locking parts 2.1, 2.2.

[0172] P 0348 WO FID430WO Page 29

[0173] The plug-in section 21.1, 21.2 is designed for connection to the housing 1. For this purpose, each plug-in section 21.1, 21.2 forms second guide sections in the form of guide grooves 217.1a, 217.1b or 217.2a, 218.2b on two sides facing away from each other, perpendicular to the respective connection direction R1.1 or R1.2. When the respective plug-in section 21.1 or 21.2 is inserted into the corresponding plug-in opening 112.1 or 112.2 on the housing side, a first guide section of the housing 1, here in the form of a guide rib 17.1a, 17.1b, 17.2a or 17.2b, engages in each guide groove 217.1a, 217.1b, 217.2a or 217.2b. Along a pair of guide ribs 17.1a, 17.1b or 17.2a, 17.2b projecting towards each other transversely to the connection direction R1.1 or R1.2 on the inside of the insertion opening 112.1 or 112.2, the respective insertion section 21.1 or 21.2 is thus guided slidingly on both sides. This is achieved through the interaction of the two housing-side first guide sections 217.1a, 217.1b or 217.2a, 217.2b with the two associated second guide sections 17.1a, 17.1b or 17.2a, 17.2b of the respective plug-in section 21.1 or 21.2 provides improved physical guidance of the respective locking part 2.1, 2.2 when plugged into the housing 1. This guidance counteracts tilting about a connection axis parallel to the respective connection direction R1.1 or R1.2 with respect to the housing 1. Such tilting can lead to an undesirable force being exerted on the locking elements 5.1 and 5.2 by the respective locking part 2.1 or 2.2. This can be more reliably prevented by the further developed locking device 1 of Figures 9A to 13.

[0174] The illustrated fastening devices are particularly suitable as fasteners for a stroller, a child carrier, a cargo bike, a bicycle trailer, a high chair, or a child seat. Other uses are also readily possible.

[0175] P 0348 WO FID430WO Page 30

[0176] Reference symbol list

[0177] 1 case

[0178] 10 Housing base

[0179] 100 base area

[0180] 101 Belt attachment

[0181] 102.1, 102.2 Side wall section

[0182] 104A, 104B Guide

[0183] 105.1, 105.2 Ramp

[0184] 1050.1 , 1050.2 Adjustment gap

[0185] 105A.1 , 105B.1 , 105C.1 , inclined surface (opposite surface)

[0186] 105A.2, 105B.2, 105C.2

[0187] 1051.1, 1051.2 Release vulnerability

[0188] 11. Upper housing

[0189] 112.1 , 112.2 Plug opening

[0190] 113 Protrusion (form-locking element)

[0191] 114 Actuating element opening

[0192] 115 Recessed handle

[0193] 16 spring bearing pins (support section)

[0194] 17.1 a, 17.1b, 17.2a, 17.2b Guide bridge (first guide section)

[0195] 2.1 , 2.2 Closure part

[0196] 20.1, 20.2 Closure body

[0197] 201.1 , 201.2 Belt attachment section

[0198] 203.1, 203.2 Connecting section

[0199] 21.1, 21.2 Plug section

[0200] 210.1, 210.2 Locking area

[0201] 211.2 Unlocking ramp (unlocking structure)

[0202] 217.1a, 217.1b, 217.2a, Guide groove (second guide section)

[0203] 217.2b

[0204] 3.1, 3.2 Additional belt section

[0205] 31.1 , 31.2 Recess (form-fit area)

[0206] 32.1, 32.2 Connecting bridge

[0207] 4 Actuating element

[0208] 40 actuating element bodies

[0209] 45.1 , 45.2 Bearing journal (bearing section)

[0210] 46 Spring bearing pins (support section)

[0211] 5.1, 5.2 Locking element

[0212] P 0348 WO FID430WO Page 31

[0213] 52.1, 52.2 Locking section

[0214] 520.1, 520.2 Control pin (control section)

[0215] 521.1, 521.2 Support surface

[0216] 54.1, 54.2 Section of the German Civil Code (BGB)

[0217] 55.1, 55.2 Steel plate (magnetic element)

[0218] 6 Return spring

[0219] D1, D2 Swivel axis

[0220] F Actuation direction

[0221] M2.1, M2.2 Magnetic device

[0222] M4.1, M4.2 magnetic device

[0223] MA4.1, MA4.2 Ejection magnet device

[0224] R1.1, R1.2 Connection / Connection Direction

[0225] -R1.1, -R1.2 Ejection direction

[0226] R5.1, R5.2 Swivel direction

[0227] P 0348 WO

Claims

FID430WO Page 32 Claims 1. Locking device, with - a housing (1 ), - at least one locking part (2.1 , 2.2) which has at least one plug-in section (21 .1 , 21 .2) for connecting the at least one locking part (2.1 , 2.2) to the housing (1 ), - at least one locking element (5.1, 5.2) adjustable on the housing (1) between a locking position and an unlocking position, and - an actuating element (4) that is adjustable on the housing (1) between a rest position and a release position, wherein, for connecting the at least one locking part (2.1, 2.2) to the housing (1), the at least one locking part (2.1, 2.2) with its at least one plug-in section (21.1, 21.2) can be plugged into the housing (1), and the at least one locking element (5.1, 5.2) can be positively connected to the at least one plug-in section (21.1, 21.2) plugged into the housing (1) by adjusting it into its locking position, and wherein, by adjusting the actuating element (4) from its rest position to its release position, the positive-locking connection between the at least one locking element (5.1, 5.2) and the at least one plug-in section (21.1, 21.2) can be released, characterized in that the at least a locking element (5.1 , 5.2) is held for adjustment between the rest position and release position on the actuating element and is adjustable on the actuating element between the locking position and the unlocking position.

2. Locking device according to claim 1, characterized in that the at least one locking element (5.1 , 5.2) is pivotably mounted on the actuating element (4).

3. Locking device according to claim 2, characterized in that a bearing section (45.1 , 45.2) is provided on the actuating element (4) which defines a physical pivot axis (D1 , D2) about which the at least one P 0348 WO FID430WO Page 33 The locking element (5.1 , 5.2) is pivotable between the locking position and the unlocking position.

4. Locking device according to claim 2 or 3, characterized in that the at least one locking element (5.1 , 5.2) on the actuating element (4) is pivotable about a pivot axis (D1 , D2) which runs parallel to an actuating direction (F) along which the actuating element (4) on the housing (1 ) is adjustable from its rest position to the release position.

5. Locking device according to one of the preceding claims, characterized in that the at least one locking element (5.1 , 5.2) has a control section (520.1 , 520.2) which is provided to interact with an unlocking structure (21 1.2) when the actuating element (4) is moved into the release position and the at least one locking element (5.1 , 5.2) is moved in this manner, whereby the actuating element (4) moves the at least one locking element (5.1 , 5.2) into the release position and thereby moves it into the unlocking position.

6. Locking device according to claim 5, characterized in that the unlocking structure (211.2) is provided on the at least one locking part (2.1 , 2.2) or the unlocking structure is provided on a part (10, 1 1 ) of the housing (1 ).

7. Locking device according to claim 5 or 6, characterized in that the unlocking structure (21 1.2) is ramp-shaped.

8. Locking device according to one of claims 5 to 7, characterized in that the control section (520.1 , 502.2) is provided to impose an adjustment on the at least one locking element (5.1 , 5.2) via the interaction of the control section (520.1 , 502.2) with the unlocking structure (21 1.2) with a movement component which runs perpendicular to an actuation direction (F) along which the actuating element (4) on the housing (1 ) is adjustable from its rest position to the release position.

9. Locking device according to one of claims 5 to 8, characterized in that the control section (520.1 , 520.2) is provided to which at least one locking element (5.1 , 5.2) is adjusted via the interaction of the control section (520.1 , 520.2) with the unlocking structure (21 1.2) into a P 0348 WO FID430WO Page 34 to force a release gap (1051.1 , 1051.2) in a side wall section (102.1 , 102.2) of the housing (1 ).

10. Locking device according to one of the preceding claims, characterized in that the at least one locking element (5.1 , 5.2) has a locking section (52.1 , 52.2) which is provided to engage a locking area (210.1 , 210.2) behind the at least one plug-in section (21 .1 , 21 .2) for the positive locking connection with the at least one plug-in section (21 .1 , 21 .2).

11. Locking device according to one of the preceding claims, characterized in that the at least one locking part (2.1 , 2.2) can be plugged into the housing (1 ) along a connection direction (R1.1 , R1.2) which runs at an angle of 5° to 175° to an actuation direction (F) along which the actuating element (4) on the housing (1 ) can be adjusted from its rest position to the release position.

12. Locking device according to one of the preceding claims, characterized in that the at least one locking part (2.1, 2.2) can be plugged into the housing (1) along a connection direction (R1.1, R1.2) which runs substantially or exactly perpendicular to a pivot axis (D1, D2) about which the at least one locking element (5.1, 5.2) is located between the The locking position and the unlocking position can be pivoted.

13. Locking device according to one of the preceding claims, characterized in that the at least one locking element (5.1 , 5.2) is biased into the locking position in the rest position of the actuating element (4) and, when the at least one locking part (2.1 , 2.2) is attached to the housing (1 ), is initially adjustable into its unlocking position and automatically returns to the locking position when the at least one locking part (2.1 , 2.2) is attached to the housing (1 ).

14. Locking device according to claim 9 and claim 13, characterized in that the control section (520.1 , 520.2) of the at least one locking element (5.1 , 5.2) is adjustable in the rest position of the actuating element (4) when connecting the at least one locking part (2.1 , 2.2) with the housing (1 ) into an adjustment gap (1050.1 , 1050.2) in the side wall section (102.1 , 102.2) of the housing (1 ) spaced apart from the release gap (1051.1 , 1051.2). P 0348 WO FID430WO Page 35 15. Locking device according to claim 13 or 14, characterized in that the at least one locking element (5.1 , 5.2) is in the rest position of the actuating element (4) when connecting the at least one locking part (2.1 , 2.2) with the housing (1 ) by the at least one plug section (21 .1 , 21 .2) can be displaced from the locking position to the unlocking position against a force with which the at least one locking element (5.1 , 5.2) is loaded into the locking position.

16. Locking device according to one of claims 13 to 16, characterized in that the at least one locking element (5.1 , 5.2) is mechanically and / or magnetically biased into the locking position in the rest position of the actuating element (4).

17. Locking device according to claim 16, characterized in that at least one spring element is provided for a mechanical preload of the at least one locking element (5.1 , 5.2) into the locking position.

18. Locking device according to claim 16 or 17, characterized in that for a magnetic preload of the at least one locking element (5.1 , 5.2) into the locking position, the at least one locking element is at least partially magnetic and / or has at least one magnetic element (55.1 , 55.2).

19. Locking device according to claim 18, characterized in that the at least partially magnetic locking element (5.1 , 5.2) or the at least one magnetic element (55.1 , 55.2) of the locking element (5.1 , 5.2) with a magnetic device (M4.1 , M4.2) of the actuating element (4) and / or with a magnetic device (M2.1 , M2.2) of the at least one locking part (2.1 , 2.2) interact magnetically.

20. Locking device according to one of the preceding claims, characterized in that the housing (1 ) and / or the actuating element (4) has a first magnetic device (M4.1 , M4.2) which magnetically attracts a second magnetic device (M2.1 , M2.2) of the at least one locking part (2.1 , 2.2) when connecting the at least one locking part (2.1 , 2.2).

21. Locking device according to claim 19 and claim 20, characterized in that the first magnetic device (M4.1 , M4.2) of the P 0348 WO FID430WO Page 36 actuating element (4), which magnetically attracts a second magnetic device (M2.1 , M2.2) of the at least one locking part (2.1 , 2.2) when connecting the at least one locking part (2.1 , 2.2) to the housing (1 ), also magnetically attracts the at least partially magnetic locking element (5.1 , 5.2) or the at least one magnetic element (55.1 , 55.2) of the locking element (5.1 , 5.2) in order to magnetically bias the at least one locking element (5.1 , 5.2) into its locking position.

22. Locking device according to claim 20 or 21, characterized in that the actuating element (4) has at least one ejection magnet device (MA4.1 , MA4.2) which, in the release position of the actuating element (4), magnetically repulses the second magnet device (M2.1 , M2.2) of the at least one locking part.

23. Locking device according to one of the preceding claims, characterized in that the actuating element (4) is preloaded into its rest position.

24. Locking device according to one of the preceding claims, characterized in that a free travel is provided which the actuating element (4) has to bridge from its rest position in the direction of the release position before further adjustment of the actuating element (4) in the direction of the release position results in an adjustment of the at least one locking element (5.1 , 5.2) in the direction of the unlocking position.

25. Locking device according to one of the preceding claims, characterized in that at least one support surface (521.1, 521.2) is formed on the at least one locking element (5.1, 5.2), which, when the locking part (2.1, 2.2) is inserted into the housing (1), is opposite at least one counter surface (105A.1, 105B.1, 105C.1; 105A.2, 105B.2, 105C.2) of the housing (1), wherein the at least one support surface (521.1, 521.2) and / or the at least one counter surface (105A.1, 105B.1, 105C.1; 105A.2, 105B.2, 105C.2) is inclined and the at least one support surface (521.1, 521.2) and the at least opposite surface (105A.1 , 105B.1 , 105C.1 ; 105A.2, 105B.2, 105C.2) are configured to come into self-reinforcing and clamping contact under a load acting on the locking part (2.1 , 2.2) attached to the housing (1 ). P 0348 WO FID430WO Page 37 26. Locking device according to one of the preceding claims, characterized in that at least one first guide section (17.1 a, 17.1 b, 17.2a, 17.2b) is formed on the housing (1 ) which is provided for a sliding guide of at least one second guide section (217.1 a, 217.1 b, 217.2a, 217.2b) of the at least one plug-in section (21.1 , 21.2) when the at least one locking part (2.1 , 2.2) with its at least one plug-in section (21.1 , 21.2) is plugged onto the housing (1 ).

27. Locking device according to claim 26, characterized in that the at least one locking part (2.1 , 2.2) can be plugged into the housing (1) along a connection direction (R1.1 , R1.2) and - the first guide section (17.1 a, 17.1 b, 17.2a, 17.2b) projects transversely to the connection direction (R1.1 , R1.2) and is intended to engage with the second guide section (217.1 a, 217.1 b, 217.2a, 217.2b) when the at least one closure part (2.1 , 2.2) with its at least one plug-in section (21.1 , 21.2) is plugged into the housing (1 ), or - the second guide section projects transversely to the connection direction (R1.1 , R1.2) and is intended to engage with the first guide section when the at least one locking part (2.1 , 2.2) with its at least one plug-in section (21.1 , 21.2) is plugged into the housing (1 ).

28. Locking device according to claim 26 or 27, characterized in that the first and second guide sections (17.1 a, 17.1 b, 17.2a, 17.2b; 217.1 a, 217.1 b, 217.2a, 217.2b) are arranged and provided to counteract, by their interaction, when the at least one locking part (2.1 , 2.2) with its at least one plug-in section (21.1 , 21.2) is plugged onto the housing (1 ), a tilting of the at least one locking part (2.1 , 2.2) relative to the housing.

29. Locking device according to one of the preceding claims, characterized in that the locking device comprises at least two locking parts (2.1 , 2.2) which can each be plugged into the housing (1 ) with a plug-in section (21 .1 , 21 .2) and can be positively connected to the housing (1 ) with a common locking element (5.1 , 5.2) or with one of several locking elements (5.1 , 5.2). P 0348 WO FID430WO Page 38 30. Locking device according to one of the preceding claims, characterized in that the at least one locking part (2.1 , 2.2) is provided for connection with a belt or strap and for fixing this belt or strap to the housing (1 ).

31. Fastening device according to claim 30, characterized in that the at least one fastening part (2.1 , 2.2) is provided for connection with an additional belt part (3.1 , 3.2) which is connected to the same belt or strap or to a further belt or strap.

32. Locking device according to claim 31, characterized in that the additional belt part (3.1 , 3.2) can be plugged into and removed from the at least one locking part (2.1 , 2.2) when the at least one locking part (2.1 , 2.2) is not connected to the housing (1).

33. Locking device according to one of the preceding claims, characterized in that the locking device is provided as a closure for a stroller, a child carrier, a cargo bike, a bicycle trailer, a high chair or a child seat. P 0348 WO

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