Adaptive lacing device

Description

Technical area

[0001] The present invention relates to a lacing device for fixing a shoe to a foot, comprising a shoe base body for receiving a foot, at least one lacing element for holding a foot in the shoe base body, and at least one adapter for adjusting the degree of lacing of the lacing element, wherein the adapter is coupled to the lacing element. State of the art

[0002] It is known to secure shoes to the wearer's foot using a lacing device. Typically, the lacing device can be opened and closed when putting on and taking off the shoe. To close the lacing device, it can be knotted, buttoned, clamped, attached with Velcro, or snapped into place, for example. Such a lacing device is known, for example, from DE 10 2011 014 903 B4. According to this document, a lace is secured using a tensioning device. EP 3 361 900 A1 shows a shoelace fastening system in which a lace can be pre-tensioned using a pre-tensioning mechanism.

[0003] A disadvantage of the known lacing devices is that the degree of lacing is determined by closing or pre-tensioning the lacing element. However, the appropriate lacing degree can change depending on the wearer's activity. For example, when walking slowly or sitting, a low lacing degree, i.e., light lacing, may be preferable, whereas when running or jumping, a high lacing degree, i.e., tight lacing, would be more appropriate. The known lacing devices always require manual readjustment to adapt the lacing degree to the current requirements.

[0004] DE 10 2015 219 614 A1 proposes doing away with the lacing system entirely and instead equipping the upper shoe with materials of varying stiffness. Such solutions increase comfort. They also allow the shoe to be put on and taken off easily. However, these lacing-free solutions have the disadvantage that they do not always provide sufficient support, and the wearer can accidentally slip out of the shoe during sudden, rapid movements.

[0005] Consequently, there is a need for a lacing device that eliminates the need for readjustment and simultaneously reduces the risk of accidentally losing the shoe.

[0006] CA 3 118 513 A1 shows a foot movement damping device and a shoe.

[0007] WO 2014 / 036374 A1 shows a motorized clamping system with sensors.

[0008] GB 2 449 722 A shows a motorized shoelace fastening system. Description of the invention

[0009] Based on the known prior art, it is an object of the present invention to provide an improved lacing device for fixing a shoe to a foot.

[0010] The object is achieved by a lacing device for securing a shoe to a foot having the features of claim 1. Advantageous further developments emerge from the subclaims, the description, and the figures.

[0011] Accordingly, a lacing device for fixing a shoe to a foot is proposed, comprising a shoe base body for receiving the foot of a wearer, at least one lacing element for holding the foot in the shoe base body, and at least one adapter for adjusting the degree of lacing of the lacing element, wherein the adapter is a speed-dependent or acceleration-dependent damping element, wherein the adapter has a receptacle filled with an active medium and at least one active body, wherein the receptacle and the active body are movable relative to one another, wherein a part of the active body extends into the receptacle and is in contact with the active medium, wherein the active medium comprises a Newtonian fluid, a dilatant fluid or a dilatant polymer, wherein the adapter is coupled to the lacing element.According to the invention, the adapter is configured to release or lock the lacing element depending on the speed of a relative movement of the foot of a wearer with respect to the lacing element, which leads to a relative movement of the lacing element with respect to the shoe body, wherein at least a portion of the lacing element and / or the adapter extends from the lateral side anterior to the medial side of the shoe body.

[0012] The speed-dependent behavior of the adapter allows the lacing system to flex during slow movements of the foot relative to the shoe (or the shoe's body) and to lock during fast, jerky movements. A shoe equipped with this lacing system is thus able to adapt the lacing to the requirements of the wearer's current movement profile without the need for additional manual adjustment.

[0013] When sitting or walking slowly, the lacing device is exposed to slow relative movements of the foot. The adapter coupled to the lacing element can thus be deflected from its resting position. For example, the adapter can perform a lifting or extension movement, allowing the lacing element to adapt to the relative movement of the foot. In this case, the lacing device exhibits a low degree of lacing.

[0014] Sports activities such as running or jumping, however, can lead to sudden relative movements of the foot relative to the lacing element. The adapter coupled to the lacing element locks and can no longer be deflected, so the lacing element counteracts the relative movement of the foot. In this case, the lacing device has a high degree of lacing.

[0015] As a result, a shoe with this lacing system can primarily provide either a high level of comfort or a high level of stabilizing effect, depending on the situation. This eliminates the need for manual adjustment and minimizes the risk of accidentally slipping out of the shoe.

[0016] Because at least one section of the lacing element and / or the adapter runs from the lateral side anterior to the medial side of the shoe body, it is possible to adaptively influence the stroke of a relative movement between the instep and the upper shoe, which is greatest in the anterior region. During slow relative movements, the maximum possible stroke can be provided. This enables a high level of comfort and makes the shoe easy to put on and take off. During quick, jerky movements, however, the adapter locks, providing minimal or no stroke at the anterior. This allows the shoe to be held firmly on the foot.

[0017] In a preferred embodiment, the lacing element and / or the adapter comprises at least one section that is arranged proximally and anteriorly on the shoe body in order to be able to interact with the instep. The relative movements that occur between the foot and the upper shoe are generally greatest in the instep area. By arranging the lacing element in this area, the advantages of the adaptive lacing device can be fully exploited. A low lacing degree, i.e., loose lacing in the instep area, creates a high level of comfort for the wearer. Conversely, it is precisely the relative movement between the instep and the upper shoe that contributes significantly to slipping out of the shoe. A high lacing degree, i.e., tight lacing in the instep area, can effectively counteract slipping out.

[0018] In a further preferred embodiment, the at least one adapter is coupled to the lacing element in such a way that the adapter forms an intermediate section of the lacing element, wherein two ends of the adapter are coupled to a lacing element section, or the adapter forms an extension of the lacing element, wherein one end of the adapter is fastened to the shoe base body.

[0019] This ensures that any relative movement between the instep and upper shoe is transmitted via the lacing element to the adapter. In the case of slow relative movements between the instep and upper shoe, a stroke of movement of the lacing element can be provided by the lacing element directing the adapter from its rest position, so that the adapter describes an extension movement, for example. With a sufficiently stiff lacing element, the maximum stroke of movement of the lacing element is essentially limited by the maximum possible deflection of the adapter. In the case of fast, jerky relative movements between the instep and upper shoe, however, the coupling between the lacing element and adapter causes the adapter to deflect so quickly that it locks and does not allow any further deflection. A stroke of movement of the lacing element can thus be prevented.

[0020] If the adapter forms an intermediate section of the lacing element, the lacing element can be coupled to the adapter at opposite ends. In this case, the lacing element is interrupted by the adapter. In the alternative case, in which the adapter forms an extension of the lacing element, the adapter is coupled to an end section of the lacing element. The adapter, in turn, can be attached to the shoe. For example, the adapter can be integrated into the shoe upper or the shoe sole. Alternatively, an end of the adapter opposite the lacing element can be attached to the shoe via an additional stabilizing structure.

[0021] In a preferred embodiment, the at least one adapter is arranged in the force line of the lacing element. This ensures that a large portion of the relative velocity resulting from the lifting movement of the lacing element relative to the wearer's foot is transferred to the adapter.

[0022] In a further development, the adapter comprises a return element, wherein the return element is configured to move the lacing element into a tightened position and hold it there. If the adapter is deflected from its rest position, the return element is subject to a pre-tension. The pre-tension of the return element causes the adapter to always strive to assume its rest position and, for example, to perform a compression movement. The rest position of the adapter is selected such that, when a foot is present in the shoe, the adapter is always subject to a minimum pre-tension. This ensures that the lacing device is always held on the wearer's foot.

[0023] The preload of the return element should be selected so that the shoe can be put on and taken off easily. During slow relative movements between the foot and the shoe, only the force exerted by the return element counteracts the foot's movement. The return element can, for example, comprise a compression spring, a tension spring, and / or an elastic polymer.

[0024] In a preferred development, the adapter has a receptacle filled with an active medium, in which at least one active body is accommodated in a relatively movable manner for the receptacle, wherein either the active body or the receptacle or both is / are fastened to one end of the lacing element, and accordingly the receptacle or the active body is fastened to the shoe base body or to another end of the / a lacing element.

[0025] The receptacle and the active body form two components of the adapter that can move relative to one another. The receptacle contains an active medium through which the active body can move. A part of the active body, also called the extension body, extends into the receptacle and is in contact with the active medium. The active medium is, for example, a Newtonian fluid, a dilatant fluid, or a dilatant polymer. The relative movement between the receptacle and the active body essentially corresponds to a reciprocating movement. The adapter is preferably designed as a speed-dependent or acceleration-dependent damping element that enables a sudden increase in the resistance force. Suitable adapters are shown, for example, in EP 3 238 670 B1, WO 2020 / 115227 A1, EP 2 854 720 B1, EP 3 145 455 B1, or EP 3 092 980 A1, the subject matters of which are incorporated herein by reference.

[0026] Because the lacing element is coupled to the adapter, it benefits from the adapter's adaptive behavior. Depending on the wearer's activity, the adapter adapts its behavior, eliminating the need for manual readjustment.

[0027] In a preferred embodiment, the lacing element is attached to the shoe base body and / or forms an extension of the shoe base body.

[0028] The term lacing element includes herein a lace, a shoelace, a band, a strap, a tab, a buckle, a hook-and-loop fastener, a material section integrated into the upper shoe with a stiffness that differs from the rest of the upper shoe and other elements that are intended to enable a lacing effect, i.e. a fixing, of a shoe on a foot.

[0029] The lacing element can be attached to the shoe body, for example, through receptacles provided on the shoe body, such as loops, eyelets, or openings in the material of the shoe body. Alternatively, the lacing element can be integrated into the shoe body in the form of fibers.

[0030] Additionally or alternatively, the lacing element can be fixed to the upper at least at one end. Alternatively, the lacing element can form an extension of the shoe, preferably the upper, for example, in the form of a tab or strap. This allows for a particularly smooth, i.e., low-profile, upper surface to be created. This also results in advantageous design aspects, such as a clear and simple visual design language.

[0031] The surfaces of the mounts can be designed with low friction to ensure that as much kinetic energy as possible reaches the adapter. Alternatively, the surfaces of the mounts can also have higher friction values ​​(µ=0.4 to 0.6; according to DIN EN ISO 8295) to support the lacing function of the lacing device.

[0032] In a further preferred embodiment, the adapter is configured such that when the speed of a relative movement of the lacing element relative to the shoe body is below a threshold value, the lacing element permits the relative movement of the lacing element, and such that when the speed of the relative movement of the lacing element relative to the shoe body exceeds the threshold value, the lacing element prevents the relative movement of the lacing element relative to the shoe body in order to hold a foot located in the shoe.

[0033] The adapter's relative movement speed-dependent behavior, whereby the adapter's behavior depends on exceeding a relative movement speed threshold, reduces the need for manual readjustment by the shoe wearer. During slow relative movements between foot and shoe, the lacing device enables a high level of comfort. During fast, abrupt relative movements between foot and shoe, however, the lacing device enables the necessary fixation of the shoe on the foot.

[0034] By presetting the adapter's threshold, the application profile of the shoe can be defined. For example, shoes where comfort is a priority, such as shoes for everyday use, can be equipped with a high threshold. Blocking of the adapter and the resulting fixation of the shoe to the foot only occurs in extreme situations such as abrupt changes of direction, faster running, etc. In contrast, a low preset threshold may be preferable for work safety shoes or sports shoes, such as soccer, rugby, basketball, hiking, ski, or snowboard boots. In these cases, fixing the shoe to the foot may be desirable even with slower relative movements of the foot to the shoe, for example to prevent the shoe from being accidentally removed.

[0035] In a further preferred development, the adapter runs essentially in the longitudinal direction of the shoe and / or is curved.

[0036] In a further preferred embodiment, the lacing element is coupled to at least two adapters. This makes it possible to distribute the stroke caused by a relative movement between the foot and the shoe between at least two adapters. This allows for smaller dimensions of the individual adapters. The lacing element can, for example, be arranged between two adapters, with a first adapter being arranged on the lateral side and a second adapter being arranged on the medial side of the shoe body. Alternatively, two adapters can be arranged on the same—for example, lateral or medial—side of the shoe body, with the adapters being coupled to the same lacing element section or to different lacing element sections.

[0037] In another embodiment, the adapter is integrated into the lacing element. This allows for a low-profile upper surface. Furthermore, advantageous design aspects arise, such as a clear and simple visual design language.

[0038] In a further development, the lacing element comprises a hollow fiber, wherein the hollow fiber forms a receptacle for the adapter, and wherein the receptacle is filled with an active medium, and at least one active body extends partially within the receptacle. This allows the force distributions of forces acting from the foot to the shoe body to be absorbed even more precisely by the lacing element or adapter, depending on the application. This can further improve the comfort and the hold of the shoe on the wearer's foot. The hollow fiber can be incorporated into a textile / fabric structure of the shoe. Short description of the characters

[0039] Preferred further embodiments of the invention are explained in more detail in the following description of the figures. In the figures: Figure 1A schematically shows a side view of a lacing device for fixing a shoe base body to a foot; Figure 1B schematically shows a detailed view of the lacing device from Figure 1A ; Figure 2A schematically shows a side view of a lacing device for fixing a shoe base body to a foot; Figure 2B schematically shows a detailed view of the lacing device from Figure 2A ; Figure 3A schematically shows a side view of a lacing device for fixing a shoe base body to a foot; Figure 3B schematically shows a detailed view in plan view of the lacing device from Figure 3A; Figure 4A schematically shows a side view of a lacing device for fixing a shoe base body to a foot; Figure 4B schematically shows a detailed view of the adapter from Figure 4A; Figure 4C schematically shows a detailed view in plan view of the lacing device from Figure 4A; Figure 5A schematically shows a side view of a lacing device for fixing a shoe base body to a foot; Figure 5B schematically shows a detailed view of the lacing device from Figure 5A ; Figure 5C schematically shows a plan view of the lacing device from Figure 5A ; Figure 6 schematically shows a side view of a lacing device for fixing a shoe base body to a foot; Figure 7A schematically shows a lateral side view of a lacing device for fixing a shoe base body to a foot; Figure 7B schematically shows a medial side view of the lacing device from Figure 7A ; Figure 8A schematically shows a lateral side view of a lacing device for fixing a shoe base body to a foot; Figure 8B schematically shows a top view of the lacing device from Figure 8A; Figure 9A schematically shows a side view of a lacing device for fixing a shoe body to a foot in a closed position; Figure 9B schematically shows a side view of the lacing device from Figure 9A in an open position; and Figure 9C schematically shows a plan view of the lacing device from Figure 9A . Detailed description of preferred embodiments

[0040] Preferred embodiments are described below with reference to the figures. Identical, similar, or equivalent elements in the different figures are provided with identical reference numerals, and a repeated description of these elements is partially omitted to avoid redundancies.

[0041] In Figure 1AA lacing device 10 for securing a shoe base 20 to a foot is shown schematically. The lacing device 10 has an adapter 30, by means of which the behavior of the lacing device 10 can be adapted to the wearer's current activity without the need for manual readjustment.

[0042] The Figure 1A The shoe body 20 shown comprises an upper 22 and a sole 24. The upper 22 has a lateral reinforcement 26 that is glued to the upper 22. Alternatively, the reinforcement can also be sewn to the upper or formed integrally with the upper.

[0043] According to Figure 1A The reinforcement is connected at one end to the sole 24. This makes it possible to transfer forces acting on the reinforcement 26 into the sole and vice versa. The reinforcement 26 thus forms a force-transmitting structure.

[0044] The end of the reinforcement 26 opposite the sole 24 has lacing element receptacles 28 which are formed by hole-shaped cutouts in the reinforcement 26. Figure 1B shows that on the opposite medial side of the shoe body, a further reinforcement element 26' is arranged, which also has lacing element receptacles 28'. A lacing element 11 runs between the reinforcements 26 and 26', connecting the reinforcements 26, 26' to one another and serving to be laced against the instep of a foot accommodated in the shoe body.

[0045] The lacing element 11 is designed in the form of a lacing band, which is threaded through the lacing element receptacles 28, 28'. Figure 1BTwo lacing element receptacles 28, 28' are provided per reinforcement 26, 26'. Alternatively, more or fewer lacing element receptacles can be provided per reinforcement. The lacing element is threaded through the lacing element receptacles 28 in such a way that it crosses over in the area between the reinforcements 26, 26'. Alternatively, other known arrangements of the lacing element 11 in the lacing element receptacles 28 can also be provided.

[0046] An adapter 30 is arranged between the ends 12 and 13 of the lacing element 11, which couples the ends 12 and 13 of the lacing element 11 to each other. Eyelets (not shown) are provided at the opposite ends of the adapter, which enable coupling to the ends 12 and 13 of the lacing element 11, respectively. Alternatively, the ends 12 and 13 of the lacing element 11 can also be glued, welded, clamped, clipped, riveted, or formed integrally with the ends of the adapter. Depending on the relative speed with which the ends of the lacing element 11 move relative to the adapter 30, the behavior of the adapter 30 changes. During slow relative movements, the adapter 30 experiences an extension, for example in the form of a lifting movement, by means of which the ends 12 and 13 of the lacing element 11 can move apart.In the case of rapid relative movements, however, the adapter 30 locks so that the distance between the ends 12 and 13 of the lacing device 11 is fixed.

[0047] The relative movements of the lacing element 11 are generally due to relative movements of a foot in relation to the shoe base body 20. During a rolling movement, as occurs, for example, when walking, the instep presses against the upper shoe 22. A relative movement in the form of a lifting movement is induced between the instep and the upper shoe 22. Conventional lacing devices can be fixed in place to limit this relative movement. By fixing the lacing device, a degree of lacing is determined. Depending on the activity of the wearer - for example, the intensity of a rolling movement - a different degree of lacing may be necessary. For slow or passive activities of the wearer, a low degree of lacing, i.e., loose lacing, is generally desirable. For active activities, such as sporting activities, a high degree of lacing, i.e., tight lacing, is generally preferred.With conventional lacing devices, the lacing level can only be adjusted to changing conditions by manual readjustment.

[0048] The Figures 1A and 1B The lacing device 10 shown is capable of adapting the degree of lacing to the wearer's current activity without the need for manual readjustment thanks to the adapter 30 coupled to the lacing element 11. During slow relative movements, a maximum possible travel distance between the instep and the upper shoe 22 can be provided. The adapter 30 allows the ends 12 and 13 of the lacing element 11 to be moved apart. This enables a high level of comfort and easy entry and exit into the shoe.

[0049] During quick, jerky movements, however, the adapter 30 locks, providing minimal or no anterior travel between the instep and the upper shoe 22. The ends 12 and 13 of the lacing element 11 cannot move further apart. The shoe base body 20 can thus be held firmly on the foot.

[0050] The adapter 30 allows the provision or prevention of a stroke depending on the speed at which the ends 12 and 13 of the lacing element move apart. The behavior of the adapter 30 is based on a preset relative movement speed threshold. If the relative movement speed of the ends 12 and 13 of the lacing element 11 relative to the adapter 30 is below the threshold, the adapter can be extended so that the ends 12 and 13 can move further apart. If the relative movement speed of the ends 12 and 13 of the lacing element 11 relative to the adapter 30 is equal to or greater than the threshold, the adapter locks and prevents relative movement between the ends 12 and 13 of the lacing element 11. The relative movement speed threshold of the adapter 30 in Figure 1Ais 20 mm / s. Alternatively, the relative movement speed threshold can be between 5 and 200 mm / s, preferably between 10 and 30 mm / s. The adapter is preferably designed as a speed-dependent or acceleration-dependent damping element, which enables a sudden increase in the resistance force emanating from the adapter relative to the lacing element and / or the upper shoe. For example, the adapter can lock immediately upon a force jump from 4.5 N to 5 N.

[0051] The structure of the adapter 30 is described in more detail in WO 2020 / 115227 A1. Alternatively, adapters as described in EP 3 238 670 B1, EP 2 854 720 B1, EP 3 145 455 B1, and EP 3 092 980 A1 can also be used.

[0052] The Figure 1A The adapter 30 shown can provide a stroke of up to 10 mm. Alternatively, a stroke between 1 and 80 mm, preferably 5 and 20 mm, can be provided.

[0053] Figures 2A and 2Bshow an alternative embodiment of a lacing device 10. The shoe body according to Figure 2A largely corresponds to the basic shoe body Figure 1A agree. Figure 2B shows a detailed view showing reinforcements 26, 26' integrated into the upper shoe 22, which are arranged offset on the upper shoe 22. Loop-shaped lacing element receptacles 28 are included at the free ends of the reinforcements 26, 26', each extending across the entire width of the reinforcements 26, 26'. Alternatively, the loop-shaped lacing element receptacles can also be narrower or wider than the reinforcements 26, 26'.

[0054] Figure 2Bfurther shows a lacing element 11 extending through the lacing element receptacles 28, which is attached at a first end 12 to the shoe base body 20. The lacing element 11 extends from the fixed end 12 from the medial side 25 of the shoe base body to the lateral side 21 of the shoe base body and is deflected upon leaving the lacing element receptacles 28 to the other lateral / medial side 21, 25 of the shoe base body. A second end of the lacing element 11 is coupled to an adaptive adapter 30 of the type described above, which is integrated laterally into the sole 24. Alternatively, the adapter can also be attached externally to the sole, for example by an adhesive connection. The orientation of the adapter 30 is fixed. Alternatively, the adapter can also be movably attached to the shoe base body.For example, the adapter can be attached to the shoe body by means of an eyelet or a swivel joint in order to reproduce pivoting movements caused by the lacing element.

[0055] Just like the device according to the Figures 1A and 1B A relative movement between the foot and the upper shoe 22 leads to a relative movement of the lacing element 11 relative to the upper shoe. Since the first end 12 of the lacing element is attached to the upper shoe 22, a relative movement of the first end 12 of the lacing device 11 relative to the upper shoe 22 is not possible.

[0056] The second end 13 of the lacing device 11 is coupled to the adapter 30 and can deflect the adapter 30 from its rest position in the event of a slow relative movement relative to the upper shoe 22. This allows the lacing element 11 to move freely between the instep and the upper shoe 22. This increases comfort and makes it easier to put on and take off the shoe. In the event of a rapid, abrupt relative movement of the second end 13 of the lacing element 11 relative to the upper shoe 22, the adapter 30 locks, so that the lacing element 11 is fixed at both ends 12 and 13 and prevents any movement between the instep and the upper shoe 22. This holds the shoe firmly on the foot.

[0057] The second end 13 of the lacing device 11 is coupled to the adapter 30 via an eyelet of the adapter (not shown). Alternatively, the second end 13 of the lacing element 11 can also be glued, welded, clamped, clipped, riveted, or integrally formed with one end of the adapter.

[0058] Figure 3A shows an alternative embodiment of the lacing device 10. The shoe base body 20 essentially resembles that of Figure 1A . Only the differences will be discussed below. The lacing device 10 comprises a lacing element 11 and two separate lacing strips 14, which run from the lateral side 21 anterior to the medial side 25 of the shoe body 20, as shown in Figure 3B shown. The two lacing strips 14 are made of a flexible material, such as polyurethane, polyester and / or polyamide, and are arranged distally from the lacing element 11.

[0059] The lacing strips 14 are attached at their respective ends to the lateral side 21 and medial side 25 of the upper 22. In particular, the lacing strips 14 on the lateral side 21 are attached to a reinforcement 27 anchored in the sole 24, as shown in Figure 3A shown. Alternatively, the lacing strips can also be directly connected to the material of the lateral upper shoe. The elastic property of the lacing strips 14 can compensate for relative movements of the instep relative to the upper shoe 22. This allows the upper shoe 22 to be held against the instep, with the flexibility of the lacing strips 14 having a positive effect on wearing comfort.

[0060] The lacing element 11 comprises a band that is stiffer than the lacing strips 14, which is fixed medially to the upper shoe 22 at a first end and coupled at a second end 13 to an adaptive adapter 30 of the type described above. The adapter 30 is visibly attached laterally to the upper shoe 22. Figure 3A shows that the adapter 30 is arranged between the lateral side of the upper shoe 22 and the reinforcement 27. A viewing window 271 is integrated into the reinforcement 27, through which the adapter 30 is visible from the outside. Alternatively, the adapter can also be attached to the sole or integrated into it. In a further embodiment, the adapter can be invisibly attached to the shoe body or integrated into it. In a further embodiment, a viewing window is provided on the shoe body, through which the adapter attached to the shoe body or integrated therein is visible.

[0061] The second end 13 of the lacing element 11, which is coupled to the adapter 30, can deflect the adapter 30 from its rest position in the event of a slow relative movement relative to the upper shoe 22. This allows the lacing element 11 to move freely between the instep and the upper shoe 22. This increases comfort and simplifies putting on and taking off the shoe. In the event of a rapid, abrupt relative movement of the lacing element 11 relative to the upper shoe 22, the adapter 30 locks, so that the lacing element 11 is fixed at both ends and prevents any movement between the instep and the upper shoe 22. This allows the shoe to be held firmly on the wearer's foot.

[0062] Figure 4A shows a further embodiment of an adaptive lacing device 10. The shoe base body 20 essentially resembles that of Figure 1AThe lacing device 10 comprises three separate, band-shaped lacing elements 11, which run from the lateral side anterior to the medial side of the shoe body 20. The lacing elements 11 are essentially tensile-resistant and are each fixed at a first end 12 via an optional reinforcement 26 to the shoe body, as shown in Figure 4C The reinforcement 26 can, for example, be anchored in the sole (not shown). Alternatively, the first ends 12 of the lacing elements 11 can be attached directly to the medial side of the shoe body. At a second end 13, the lacing elements 11 each have loops 16, as shown in Figure 4A shown.

[0063] An arcuate adapter 30 of the type described above is arranged laterally on the upper shoe 22. A detailed view of the adapter 30 is shown in Figure 4Bshown. The adapter comprises a receptacle 32, the free end of which is attached to the sole 24. Furthermore, the adapter 30 comprises an active body 34, which is partially slidably received in the receptacle 32. A large part of the active body extends outside the receptacle 32 and rests on a flexible base 36 laterally on the upper shoe. The base 36 is made of polyamide. Alternatively, the base can also be coated with polyester, leather, synthetic leather and the like. Alternatively, a flexible sheath for receiving or guiding the active body can be provided on the upper shoe. The free end of the active body 34 is attached to the sole 24. The part extending in an arc from the adapter can also be an extension, for example made of a rigid plastic, which extends from the active body of the adapter. In this way, adapters with geometries such as in Figure 1A shown can be used.

[0064] The loops 16 of the lacing elements 11 encompass a central section of the active body 34. The curved shape of the adapter 30 enables a lifting movement emanating from the lacing elements 11 to be transferred into a lifting movement between the receptacle 32 and the active body 34.

[0065] The second ends 13 of the lacing elements 11, which are coupled to the active body 34 via the loops 16, can partially move the active body 34 out of the receptacle 32 in the event of a slow relative movement with respect to the upper shoe 22. As a result, the lacing elements 11 allow a travel path between the instep and the upper shoe 22. This enables increased wearing comfort and simplified donning and doffing of the shoe. In the event of a rapid, abrupt relative movement of the lacing elements 11 with respect to the upper shoe 22, the adapter 30 locks, so that the lacing elements 11 are fixed at both ends and do not allow any travel path between the instep and the upper shoe 22. This allows the shoe to be held firmly on the wearer's foot.

[0066] The number of lacing elements can vary depending on the shoe's intended use. In an alternative embodiment, the lacing elements can also be coupled to the receptacle instead of the active body. Alternatively, a second curved adapter can be arranged medially on the shoe base, which is coupled to the first ends of the lacing elements.

[0067] Figure 5A shows another embodiment of an adaptive lacing device 10. The shoe body 20 comprises a sole 24 and a closed upper 22. The upper 22 is made entirely or partially of a flexible material, such as elastane, and can be put on and taken off similarly to a sock. Gripping aids 29 are provided in the area of ​​the entry opening 23 to facilitate putting on and taking off the shoe.

[0068] The lacing device 10 comprises a band-shaped lacing element 11, which runs in a figure-eight shape around the shoe body and encompasses the heel, instep, and sole areas. The lacing element is tensile-resistant. A detailed view of the lacing element 11 is shown in Figure 5B From a first end 12, the lacing element 11 runs from the lateral side 21 anteriorly, proximally over the instep area, to the medial side 25 of the shoe body 20, as in Figure 5C shown. From the medial side, the lacing element 11 runs anteriorly, distally, i.e., across the sole area back to the lateral side 21 of the shoe body 20. From there, it runs again across the instep with a slightly posterior orientation toward the medial side 25. From the medial side, the lacing element 11 extends posteriorly around the heel area back to the lateral side to a second end 13.

[0069] The two ends 12 and 13 of the band-shaped lacing element 11 are coupled to each other via an adapter 30 of the type described above, so that the lacing device 10 describes a complete figure eight. As shown in the Figures 5A and 5C As shown, the adapter 30 is arranged on the lateral side 21 of the shoe body.

[0070] The Figures 5A to 5C The lacing device 10 shown is capable of adapting the degree of lacing to the wearer's current activity without the need for manual readjustment thanks to the adapter 30 coupled to the lacing element 11. During slow relative movements, a maximum possible travel distance between the instep and the upper shoe 22 can be provided. The adapter 30 allows the ends 12 and 13 of the lacing element 11 to be moved apart. This enables a high level of comfort and easy entry and exit into the shoe.

[0071] During quick, jerky movements, however, the adapter 30 locks, providing minimal or no travel between the instep and the upper shoe 22. The ends 12 and 13 of the lacing element 11 cannot move further apart. The shoe body 20 can thus be held firmly on the wearer's foot.

[0072] For further details regarding the Adaptor 30, please refer to the above comments on the Figures 1A and 1B referred to.

[0073] The figure-eight design is shown only as an example. Other designs are also possible, for example, providing multiple grips around the sole and / or heel area. Furthermore, the adapter's placement is not limited to the lateral side of the shoe body. Thus, the adapter can also be arranged in the instep area, on the medial side of the shoe body, or in the sole area. The band-shaped lacing element is made of polyamide. Alternatively, it can also be made of natural fiber, polyester, or other polymer-based materials.

[0074] Figure 6 shows a lacing device 10 with a shoe base body 20, which essentially corresponds to the shoe base body of Figure 5A Below, only the differences compared to the version from Figure 5Adescribed. The lacing device 10 comprises a plurality of fibrous lacing elements 11, 11'. The fibrous lacing elements are incorporated into the material of the upper shoe 22 in such a way that they can move longitudinally relative to the upper shoe 22. Longitudinal direction here means the extension along the fiber of a lacing element 11, 11', i.e., from a first end 12, 12' of a lacing element 11, 11' to a second end of the lacing element 11, 11'. The material of the upper shoe in this case is synthetic leather on a textile fabric base, optionally with a PVC or PU coating. The material of the upper shoe can also be made of natural fiber, polyester, or other polymer-based materials.

[0075] As in Figure 6As shown, three lacing elements 11 run almost parallel from a heel area of ​​the shoe body 20 across the lateral side, further across the instep area to the medial side, and finally posteriorly again to the heel area. In the heel area, the ends of the lacing elements 11 are attached to a reinforcement 27.

[0076] Three additional lacing elements 11' run almost parallel from the middle, lateral sole area across the instep area to the medial side, ending at the middle, medial sole area. In the lateral and medial sole areas, the ends of the lacing elements 11' are attached to reinforcements 27', e.g., glued, sewn, hooked, etc.

[0077] The first ends 12, 12' of the lacing elements 11, 11' on the lateral side terminate in the receptacles 32 and 32', respectively, which are embedded in the reinforcements 27 and 27', respectively. The lacing elements 11, 11' function as active bodies and, together with the receptacles 32, 32', each form an adapter 30, 30' of the type described above (cf. Figure 1A ).

[0078] The lacing elements 11, 11', which together with the receptacles 32, 32' form the adapters 30, 30', can be partially moved out of the receptacles 32, 32' in the event of a slow relative movement of the instep relative to the upper shoe 22. As a result, the lacing elements 11, 11' allow a travel path between the instep and the upper shoe 22. This enables increased wearing comfort and simplified donning and doffing of the shoe. In the event of a rapid, abrupt relative movement of the lacing elements 11, 11' relative to the upper shoe 22, the adapters 30, 30' lock, so that the lacing elements 11, 11' are fixed at both ends and do not allow any travel path between the instep and the upper shoe 22. This allows the shoe to be held firmly on the wearer's foot.

[0079] The Figures 7A and 7B show a lacing device 10 with a shoe base body 20, which essentially corresponds to the shoe base body of Figure 6The course and arrangement of the lacing elements 11, 11' also essentially corresponds to that of Figure 6 In contrast to the lacing device according to Figure 6 are in the Figures 7A and 7B the adapters 30 are integrated into the lacing elements 11, 11'. As can be seen from the partial section in Figure 7A As can be seen, the lacing elements 11, 11' comprise hollow fibers, wherein the hollow fibers form the receptacles 32 of the adapters 30. The basic principle of the adapters corresponds to that of the adapters from Figure 1A . Accordingly, the receptacles 32 are filled with an active medium and each comprise an active body 34 which extends in a fibrous manner within the receptacle 32.

[0080] As in Figure 7AAs shown, the receptacles 32 are embedded in the reinforcements 27 in the heel area in the area of ​​a first end of the lacing elements 11 on the lateral side of the shoe base body 20. From there, they extend over the area of ​​the instep to the medial side where they finally, as shown in Figure 7B shown, end with the receiving end 33. Similarly, the receptacles of the three additional lacing elements 11' extend almost parallel from a first end 12' at the middle, lateral sole region across the instep region to the medial side. The lacing elements 11' also include receptacles and active elements (not shown).

[0081] As in Figure 7B As shown, the active bodies 34 are embedded in the reinforcements 27 in the heel area in the area of ​​a second end 13 of the lacing elements 11 on the medial side of the shoe base body 20. From there, they extend over the area of ​​the instep to the lateral side where they finally, as shown in Figure 7Ashown, end with the active body end 35.

[0082] The lacing elements 11, 11', which encompass the receptacles 32 and the active bodies 34 and thus simultaneously form the adapters 30, cause the active bodies 34 to be partially moved out of the receptacles 32 in the event of a slow relative movement of the instep relative to the upper shoe 22. As a result, the lacing elements 11, 11' allow a travel path between the instep and the upper shoe 22. This can increase wearing comfort and simplify putting on and taking off the shoe. In the event of a rapid, abrupt relative movement of the lacing elements 11 relative to the upper shoe 22, the adapters 30 lock, so that the receptacles 32 and the active bodies 34 are fixed relative to one another and, as a result, do not allow any travel path between the instep and the upper shoe 22. This allows the shoe to be held firmly on the wearer's foot.

[0083] Alternatively, the receiving ends can also lead posteriorly to the second ends in the heel area and essentially coincide with the fixed end of the active bodies.

[0084] The Figures 8A and 8B show a lacing device 10 with a shoe base body 20, which essentially corresponds to the shoe base body of Figure 5A Below, only the differences compared to the version from Figure 5Adescribed. The upper shoe 22 comprises regions of varying stiffness. In the area of ​​the instep between the lateral side 21 and medial side 25 of the upper shoe 22, an intermediate section is arranged which has a lower stiffness than the material of the lateral side 21 and medial side 25 of the upper shoe 22. This intermediate section forms an elastic lacing element 11 and allows the shoe to be put on and taken off similarly to a sock. The stiffness of the material of the lateral side 21 and medial side 25 of the upper shoe 22 is at least twice as high as the stiffness of the material of the intermediate section.

[0085] When putting on and taking off the shoe or when the wearer's foot rolls, the elastic lacing element 11 undergoes a stretch, whereby the latter describes a relative movement with respect to the lateral side 21 and medial side 25 of the upper shoe 22.

[0086] Laterally on the upper shoe 22 there is an adapter 30 of the type described above (cf. Fig. 1A ). One end of the adapter 30, for example a receptacle, is attached, for example glued, to the lateral part of the upper shoe 22. The other end of the adapter 30, for example an active body, is attached to the flexible lacing element 11 by means of a loop 16 integrated into the lacing element 11. As a result, relative movements between the lateral side 21 of the upper shoe 22 and the elastic lacing element 11 can be at least partially transmitted to the adapter 30.

[0087] In the event of a slow relative movement of the instep relative to the upper shoe 22, the adapter 30 can be deflected, meaning the active body can be partially pulled out of the receptacle. As a result, the lacing element 11 allows a stroke between the instep and the upper shoe 22. This enables increased comfort and makes it easier to put on and take off the shoe.

[0088] In the event of a rapid, abrupt relative movement of the lacing element 11 relative to the lateral side 21 of the upper shoe 22, the adapter 30 locks, so that the possible relative movement of the lacing element 11 relative to the upper shoe 22 is limited and only a comparatively small travel distance is permitted between the instep and the upper shoe 22. This allows the shoe to be held more firmly on the wearer's foot.

[0089] Figure 9Ashows a further embodiment of a lacing device 10 with a shoe base body 20, which essentially corresponds to the shoe base body of Figure 5A Below, only the differences compared to the version from Figure 5A A tab-shaped lacing element 11 extends from the medial side 25 of the shoe body 20 over the instep area to the lateral side 21, as shown in Figure 9C shown. The tab-shaped lacing element 11 has a substantially triangular shape, with one side of the lacing element 11 being fastened medially to the shoe base body 20 and the other two sides being free. The two free sides of the lacing element 11 converge at one end 12 and can, as shown in the Figures 9A and 9C shown, can be folded over the instep area of ​​the shoe base body 20. In the folded state, the end 12 of the lacing element 11 is located on the lateral side 21 of the shoe base body.

[0090] On the lateral side 21 of the shoe base body 20, an adapter 30 is attached, which can be coupled to the lacing element 11 via a clip connection 17. Figure 9A shows the adapter 30 and the lacing element 11 in the coupled state, Figure 9B shows the adapter 30 and the lacing element 11 in the uncoupled state. Figure 9B shows a clip projection 18 arranged at the end 12 of the lacing element 11 and a clip receptacle 19 arranged on the adapter 30, which together provide a detachable clip connection between the adapter 30 and the lacing element 11.

[0091] In the Figure 9AIn the coupled state shown, the free end 12 of the tab-shaped lacing device 11 can deflect the adapter 30 from its rest position in the event of a slow relative movement of the instep of the foot relative to the upper shoe 22. As a result, the lacing element 11 allows a travel path between the instep of the foot and the upper shoe 22. This enables increased wearing comfort and easier putting on and taking off of the shoe. In the event of a rapid, abrupt relative movement of the lacing element 11 relative to the upper shoe 22, the adapter 30 locks, so that the lacing element 11 is fixed both on the medial side and on the free end 12, and does not allow any travel path between the instep of the foot and the upper shoe 22. This holds the shoe firmly on the wearer's foot.

[0092] The lacing element 11 is attached medially to the upper 22. Alternatively, the lacing element can also be attached medially to the sole. The adapter 30 can also be integrated into a reinforcement in the heel area of ​​the shoe body.

[0093] Alternatively, the tab-shaped lacing element can also be designed in the shape of a band and, for example, extend over the instep area from the medial to the lateral side of the shoe body.

[0094] In the above embodiments, a relative movement of an instep relative to the upper shoe implies that the wearer's foot is located within the shoe body.

[0095] Where applicable, all individual features shown in the embodiments may be combined and / or exchanged with each other without departing from the scope of the invention according to claims 1-12. List of reference symbols

[0096] 10Lacing device 11Lacing element 11'Lacing element 12End 12'End 13End 14Lacing strip 16Loop 17Clip connection 18Clip projection 19Clip receptacle 20Shoe body 21Lateral side 22Upper shoe 23Entrance opening 24Sole 25Medial side 26Reinforcement 27Reinforcement 27'Reinforcement 271Viewing window 28Lacing element receptacle 28'Lacing element receptacle 29Grip aid 30Adaptor 30'Adaptor 32Receptacle 32'Receptacle 33Receptacle end 34Active body 35Active body end 36Underlay

Claims

1. Lacing device (10) for securing a shoe to a foot, comprising: a shoe main body (20) for receiving the foot, at least one lacing element (11, 11') for holding the foot in the shoe main body (20), and at least one adaptor (30, 30') for adjusting the lacing degree of the lacing element (11, 11'), wherein the adaptor (30, 30') is a speed-dependent or acceleration-dependent damping element, wherein the adaptor (30, 30') comprises a receptacle (32, 32') filled with an active medium and at least one active body (34), wherein the receptacle (32, 32') and the active body (34) are movable relative to each other, wherein a portion of the active body (34) extends into the receptacle (32, 32') and is in contact with the active medium, wherein the active medium comprises a Newtonian fluid, a dilatant fluid, or a dilatant polymer, wherein the adaptor (30, 30') is coupled to the lacing element (11, 11'), and wherein the adaptor (30, 30') is configured to release or lock the lacing element (11, 11') depending on the speed of a relative movement of the lacing element with respect to the shoe main body (20), and at least one section of the lacing element (11, 11') and / or of the adaptor (30) runs anteriorly from the lateral side (21) to the medial side (25) of the shoe main body.

2. Lacing device (10) according to claim 1, characterized in that the lacing element (11, 11') and / or the adaptor (30) comprises at least one section arranged proximally, anterior to the shoe main body to interact with the instep of the foot.

3. Lacing device (10) according to any of the preceding claims, characterized in that the at least one adaptor (30) is coupled to the lacing element (11) such that the adaptor forms an intermediate section of the lacing element (11), wherein two ends of the adaptor (30) are coupled to a lacing element section, or the adaptor (30) forms an extension of the lacing element (11), wherein one end of the adaptor (30) is attached to the shoe main body (20).

4. Lacing device (10) according to any of the preceding claims, characterized in that the at least one adaptor (30, 30') is arranged in the force line of the lacing element (11, 11').

5. Lacing device (10) according to any of the preceding claims, characterized in that the adaptor (30, 30') comprises a restoring element, wherein the restoring element is configured to bring the lacing element (11, 11') into and hold it in a laced up position.

6. Lacing device (10) according to any of the preceding claims, characterized in that either the active body (34) or the receptacle (32, 32') is fastened to one end of the lacing element (11, 11'), and the receptacle (32, 32') or the active body (34) is fastened to the shoe main body or to another end of the lacing element (11), respectively.

7. Lacing device (10) according to any of the preceding claims, characterized in that the lacing element (11) is attached to the shoe main body (20) and / or is an extension of the shoe main body (20).

8. Lacing device (10) according to any of the preceding claims, characterized in that the adaptor (30, 30') is configured such that: if the speed of a relative movement of the lacing element (11, 11') with respect to the shoe main body (20) is below a threshold value, the adaptor (30, 30') allows said relative movement of the lacing element (11, 11'); and if the speed of the relative movement of the lacing element (11, 11') with respect to the shoe main body (20) exceeds the threshold value, the adaptor (30, 30') stops the relative movement of the lacing element (11, 11') in order to lace up a wearer's foot located in the shoe main body (20).

9. Lacing device (10) according to any of the preceding claims, characterized in that the adaptor (30) runs substantially in the longitudinal direction or transversely to the longitudinal direction of the shoe main body (20) and / or is arch-shaped.

10. Lacing device (10) according to any of the preceding claims, characterized in that the lacing element (11, 11') is coupled to at least two adaptors.

11. Lacing device (10) according to any of the preceding claims, characterized in that the adaptor (30, 30') is integrated into the lacing element (11, 11').

12. Lacing device (10) according to claim 11, characterized in that the lacing element (11, 11') comprises a hollow fibre, wherein the hollow fibre forms the receptacle (32) of the adaptor (30, 30'), and wherein the receptacle (32) is filled with an active medium and at least one active body (34) extends partially within the receptacle (32).