Sole element for adjustable forefoot stiffness

Abstract

The present invention relates to a sole element (100) designed to be arranged in a shoe, preferably a sports shoe. The sole element (100) is a Strobel board (120) and / or an insole. The sole element (100) comprises means for stiffening (110) at least one section (105a) of the sole element (100), wherein the at least one section (105a) of the sole element (100) is arranged at least in a region designed to accommodate a forefoot. The sole element (100) is designed to be arranged in the shoe when the shoe is worn.

Description

Field of invention

[0001] The present invention relates to sole elements designed to be arranged in a shoe, preferably a sports shoe. The sole element is a Strobel board and / or an insole. The sole element comprises means for stiffening at least one section of the sole element, wherein the at least one section of the sole element is arranged in an area designed to accommodate a forefoot. The sole element is designed to be arranged in the shoe when the shoe is worn. Technical background

[0002] The goal of maximizing an athlete's performance is central to the development and advancement of sporting goods. This is especially true for athletic shoes, such as running shoes, where the athlete's performance depends crucially on the shoe's performance. Therefore, considerable effort has been invested in optimizing the performance of athletic shoes, particularly running shoes.

[0003] An important criterion for evaluating a shoe's performance is its energy return and / or propulsion. For example, energy return and / or propulsion can be controlled by the shoe's stiffness. In particular, increased energy return and / or propulsion can be achieved by increasing the shoe's stiffness.

[0004] Typically, a shoe is manufactured with a predefined stiffness that cannot be adjusted after the manufacturing process is complete, making stiffness, energy return, and / or propulsion a permanent characteristic of the shoe. However, different athletes prefer different shoe stiffness levels, and an athlete's performance can be significantly reduced if the shoe stiffness does not match their specific preferences.

[0005] Therefore, there is a need for new technologies to change and improve the performance of shoes, especially sports shoes, which address at least some of the disadvantages of the state of the art described above and further improve other aspects. Summary of the invention

[0006] A first aspect of the present invention relates to a sole element configured to be arranged in a shoe, preferably a sports shoe. The sole element is a Strobel board and / or an insole, and the sole element comprises means for stiffening at least one section of the sole element. In particular, the at least one section of the sole element is arranged at least in a region configured to receive a forefoot. Additionally, the sole element is configured to be arranged in the shoe when the shoe is worn.

[0007] For example, the Strobel board and / or the insole may be configured to be arranged within the shoe. Being configured to be arranged within the shoe may include the sole element being permanently attached to the shoe. For example, the sole element may be arranged within the shoe in such a way that it is an integral part of the shoe. In particular, the sole element may be permanently attached to at least one part of the shoe, such as the upper and / or midsole. Specifically, the Strobel board may be arranged within the shoe in such a way that it is an integral part of the shoe. Additionally or alternatively, being configured to be arranged within the shoe may include the sole element being configured to be received by the shoe.For example, the size, geometry, and / or thickness of the sole element can be such that the shoe can accommodate it. In particular, the insole can be designed so that it can be received by the shoe, for example, by placing the insole inside the shoe.

[0008] The sole element comprises means for stiffening at least one section of the sole element. The stiffening means may include at least one means for stiffening the at least one section of the sole element. The stiffening means may be configured such that the at least one section of the sole element stiffened by the stiffening means is located in an area configured to receive a forefoot. The area configured to receive the forefoot may include an area that receives at least one section of the forefoot when the sole element is positioned in the shoe. For example, the forefoot area may include an area associated with a toe and / or phalanges of the foot.

[0009] Being designed to be positioned inside the shoe when the shoe is worn can include the insole being positioned inside the shoe when an athlete wears the shoe to perform (sporting) activities. In other words, the insole can be designed to be positioned inside the shoe at least during (typical) use of the shoe, e.g., for performing (sporting) activities such as walking and / or running.

[0010] Stiffening at least one section of the sole element, located in an area designed to accommodate the forefoot, allows for adjustment of the forefoot stiffness of the sole element. This adjustment enables localized and specific customization of the responsiveness and / or energy return of the shoe incorporating the sole element. As a result, the forefoot stiffness and / or responsiveness of the shoe can be tailored to the athlete's needs, thereby optimizing the athlete's performance and improving the shoe's comfort.

[0011] In general, the means for stiffening at least one section of the sole element can be configured to stiffen at least one section of the shoe designed to accommodate a forefoot. Additionally or alternatively, the means for stiffening at least one section of the sole element can be configured to stiffen at least one section of the shoe designed to accommodate a midfoot. In particular, the stiffening means can be arranged to extend from a section of the shoe designed to accommodate a forefoot to the section of the shoe designed to accommodate a midfoot.

[0012] In some embodiments, stiffening at least one section of the shoe, which is configured to accommodate a forefoot and / or a midfoot, may include increasing the propulsion associated with the shoe. Additionally or alternatively, stiffening at least one section of the shoe, which is configured to accommodate a forefoot and / or a midfoot, may include reducing the stud pressure associated with the shoe.

[0013] For example, the stiffening means may be arranged such that, when the sole element is arranged in the shoe, the stiffening means also stiffens a section of the shoe configured to receive a section of the forefoot. In other words, the stiffening means may stiffen both the section of the sole element and the section of the shoe. For example, the stiffening of the section of the shoe may be based on the stiffening of the section of the sole element. In particular, the stiffening of the section of the sole element by the stiffening means, when the sole element is arranged in the shoe, may result in the stiffening of the section of the shoe. The at least one section of the shoe that is stiffened by the stiffening means may substantially correspond to the at least one section of the sole element that is stiffened by the stiffening means.Alternatively, the at least one section of the shoe that is stiffened by the stiffening means can be a subsection of the at least one section of the sole element that is stiffened by the stiffening means. Alternatively, the at least one section of the shoe that is stiffened by the stiffening means can be a supersection of the at least one section of the sole element that is stiffened by the stiffening means.

[0014] The stiffening means can stiffen at least one section of the sole element and / or the shoe to increase the propulsion associated with the shoe. For example, the propulsion associated with the shoe can include energy return associated with the shoe. In particular, stiffening at least one section of the shoe designed to accommodate a forefoot can increase the shoe's energy return. Specifically, energy return associated with the forefoot area can be increased. Increasing the energy return associated with the forefoot area of ​​the shoe minimizes energy loss from the shoe and thereby optimizes the performance of an athlete wearing the shoe. For example, improved energy return of the forefoot-supporting section of the shoe can be especially beneficial for athletes who perform a forefoot strike.

[0015] Additionally or alternatively, the stiffening agent can stiffen at least one section of the sole element and / or the shoe in such a way as to reduce the stud pressure associated with the shoe. Reducing the stud pressure associated with the shoe can include reducing the pressure and / or force that a stud can exert on the sole element and / or the shoe, based on the weight of the athlete wearing the shoe. In particular, stiffening at least one section of the sole element and / or the shoe can allow the force exerted by the stud on the shoe and / or the sole element and / or the foot to be distributed over a larger area, thereby minimizing the pressure (force per unit area).Therefore, stiffening at least one section of the sole element and / or the shoe improves the comfort of the shoe that incorporates the sole element, thus contributing to optimized athletic performance. In particular, the reduced stud pressure and the increased propulsion and / or energy return create a synergistic effect that enables the athlete wearing the shoe to achieve optimal performance.

[0016] In general, the sole element can be arranged in the shoe in such a way that at least one section of the sole element is replaceable. In particular, the at least one replaceable section of the sole element can include the stiffening means.

[0017] Arranging the sole element in the shoe in such a way that at least one section of the sole element is replaceable may include allowing that at least one section of the sole element to be replaced without significantly affecting other components of the sole element and / or the shoe. For example, the at least one section of the sole element may not be permanently attached to other components of the shoe and / or the midsole, e.g., not by gluing and / or sewing. Additionally or alternatively, arranging the sole element in the shoe in such a way that at least one section of the sole element is replaceable may include allowing that at least one section of the sole element to be replaced based on the athlete's needs.In general, the at least one replaceable section of the sole element can be arranged in an area designed to accommodate a forefoot. In some embodiments, the at least one replaceable section of the sole element can essentially comprise the sole element itself; for example, the sole element itself can be replaceable. If, for instance, the sole element includes the insole, then the sole element can be replaceable.

[0018] By arranging the sole element such that at least one section of the sole element is replaceable, preferably a section of the stiffening means, the stiffness of the sole element and / or the shoe can be controlled based on the athlete's needs. In particular, the at least one section of the stiffening means that is / are replaceable can be exchanged and / or replaced by another at least one section of the stiffening means. In other words, a first section of the stiffening means can be exchanged and / or replaced by a second section of the stiffening means.

[0019] In particular, the first section of the stiffening means and the second section of the stiffening means may have different stiffening properties; for example, the first section may have primary stiffening properties and the second section may have secondary stiffening properties. Specifically, the primary stiffening properties of the first section may be such that they provide a primary stiffness to the sole element and / or the shoe. Additionally or alternatively, the secondary stiffening properties of the second section may be such that they provide a secondary stiffness to the sole element and / or the shoe. For example, the secondary stiffening properties of the second element may be such that at least one section of the sole element and / or the shoe comprising the second element is stiffer than at least one section of the sole element and / or the shoe comprising the first section.

[0020] In particular, at least one replaceable section of the sole element may be designed to be replaced and / or removed through an opening in the shoe. For example, at least one replaceable section of the sole element may be designed to be replaced and / or removed through an ankle opening in the shoe.

[0021] Replacing and / or removing at least one section of the sole element through an opening in the shoe allows for easy and quick replacement of that section. Specifically, replacing and / or removing the sole element through an ankle opening in the shoe allows for this to be done through a natural opening, such as one that a shoe necessarily has. In other words, if the sole element is replaced and / or removed through the ankle opening, no further or additional openings need to be created in the shoe, such as in a midsole. This simplifies and speeds up the shoe's manufacturing process.Additionally, the stability of the shoe can be increased, as no further openings, i.e. areas without material, need to be introduced.

[0022] In general, the stiffening means can include a pocket designed to receive a stiffening element. In particular, the pocket can be designed to receive the stiffening element through an opening.

[0023] The pocket can be located in an area designed to accommodate a forefoot. The pocket can be of a size and / or geometry such that it can accommodate the stiffening element. More generally, a pocket can include and / or define a cavity. For example, the pocket can be of a size and / or geometry such that the size and / or geometry of the cavity substantially corresponds to the size and / or geometry of the stiffening element. The pocket can include an opening, such as an access to the cavity, through which the stiffening element can be received. In particular, the pocket can be configured such that the opening faces the opening of the shoe when the sole element is located in the shoe. Specifically, the pocket can be configured such that the opening of the pocket faces the ankle opening of the shoe.

[0024] Additionally, the pocket opening can be designed to allow the stiffening element to be removed. In other words, the pocket can be configured to allow for the replacement of the stiffening element. For example, the pocket can initially accommodate a first stiffening element providing the first stiffening function. This first stiffening element can then be removed through the pocket opening, and a second stiffening element, providing the second stiffening function, can be inserted.

[0025] Stiffening devices that include a pocket designed to hold a stiffening element allow for efficient and easy replacement of the stiffening element. Efficient and easy replacement of the stiffening element contributes to optimized adjustment of the boot's propulsion, energy return, and / or lug pressure.

[0026] In particular, the bag can be contained within the Strobel board. Additionally or alternatively, the bag can be at least partially attached to the Strobel board. Specifically, the bag can be at least partially attached to the Strobel board by sewing. Additionally or alternatively, the bag can be at least partially attached to the Strobel board by knitting.

[0027] For example, the pocket can be an integral part of the Strobel board; e.g., the Strobel and the pocket can be a single piece. For example, a first section of the pocket can extend from the Strobel board, and a second section of the pocket can be contained within the Strobel board. In particular, at least one section of an inner surface of the pocket cavity can be formed by the Strobel board.

[0028] A pocket integrated into the Strobel board allows for the use of a one-piece Strobel board. A one-piece Strobel board improves the stability of the pocket and contributes to the Strobel board's durability. Additionally, the integrated pocket allows the pocket to be attached to the Strobel board without creating seams, thus optimizing the shoe's comfort.

[0029] Additionally or alternatively, at least a section of the bag can be attached to the Strobel board. For example, the bag can be attached to the Strobel board in such a way that a section of the bag is formed by the Strobel board itself. Additionally or alternatively, a separate bag can be attached to the Strobel board. In other words, a pre-made bag that itself forms a cavity can be attached to the Strobel board.

[0030] In particular, the bag can be attached to the Strobel board by sewing. For example, the bag can be attached to the Strobel board by sewing an outer edge and / or border area of ​​the bag to the Strobel. Additionally or alternatively, the bag can be attached to the Strobel board by knitting. For example, the bag can be attached to the Strobel board by knitting an outer edge and / or border area of ​​the bag to the Strobel.

[0031] Attaching the bag to the Strobel board by sewing and / or knitting simplifies its creation. Furthermore, this method improves the quality of the attachment, for example, creating a more resistant bond against external forces, thus contributing to the longevity of the Strobel board.

[0032] In some embodiments, the pocket can be arranged on a side of the Strobel board that is adapted to face the inside of the shoe.

[0033] For example, the pocket can be attached, at least partially, to a side of the Strobel board that is adapted to face the inside of the shoe. Additionally or alternatively, the pocket can be contained within the Strobel board, such that at least a section of the pocket extends from a side of the Strobel board that is adapted to face the inside of the shoe. For example, the pocket can be positioned on one side of the Strobel board such that the opening of the pocket is located on a side of the Strobel board that is adapted to face the inside of the shoe.

[0034] The Strobel board being designed to face the inside of the shoe can include the fact that at least a portion of its side is covered by components of the shoe. For example, at least a portion of the Strobel board's side might be covered by an insole. In other words, the side of the Strobel board that is designed to face the inside of the shoe may not be directly (visually) accessible, e.g., visible through the shoe's ankle opening, but may be covered by the shoe's insole.

[0035] Positioning the pocket on a side of the Strobel board adapted to face the inside of the shoe allows the pocket opening to be positioned on the same side. This facilitates the replacement of the stiffening element. Specifically, this ensures that the pocket opening is directly accessible through the shoe's opening, such as the ankle opening.This allows a first stiffening element, which is held in the pocket, to be removed from the pocket through the pocket opening and the ankle opening of the shoe, and a second stiffening element to be inserted into the pocket through the ankle opening and the pocket opening. Thus, positioning the pocket on a side of the Strobel board adapted to face the inside of the shoe optimizes the replaceability of the stiffening element section.

[0036] Generally, the bag can include a means of securing the stiffening element. For example, the means of securing it can be a hook-and-loop fastener.

[0037] For example, the means for fixing the stiffening element can include means for holding the stiffening element in the pocket. In particular, the means for fixing the stiffening element can include means for at least partially closing the opening of the pocket. Generally, the fixing means can be configured such that the stiffening element can be released. In other words, the means for fixing the stiffening element can include means for reversibly fixing the stiffening element. For example, the means for fixing the stiffening element can include a hook-and-loop fastener. Additionally or alternatively, the means for fixing the stiffening element can include at least one button, preferably a snap fastener. At least one section of the means for fixing the stiffening element can be arranged on a side of the Strobel board adapted to face the inside of the shoe.

[0038] A pocket that includes a means for securing the stiffening element, such as a hook-and-loop fastener to close at least part of the pocket opening, allows the stiffening element to be fixed and held in an intended and / or pre-configured position. Specifically, the means for securing the stiffening element allows it to be held within the pocket, ensuring that the stiffening element remains in an area of ​​the Strobel board designed to accommodate a forefoot. Thus, when the shoe is worn, the stiffening element remains in the pocket, stiffening an area of ​​the Strobel board and / or the shoe designed to accommodate a forefoot, thereby maximizing the shoe's energy return, minimizing stud pressure associated with the shoe, and optimizing the performance of an athlete wearing the shoe.

[0039] In general, the means of stiffening can include a stiffening plate.

[0040] A stiffening plate may include an extent that the stiffening plate's extent in a first direction is significantly smaller than its extent in a second direction. For example, the thickness associated with the stiffening plate may be significantly smaller than the planar extent of the stiffening plate. In particular, the stiffening plate may comprise a continuous and / or connected plate. The stiffening plate may include at least one recess. Additionally or alternatively, the stiffening plate may include at least one opening.

[0041] In general, the stiffening plate can be designed to fit into the pocket of the Strobel board. For example, the size and / or shape of the stiffening plate can be configured so that it can be accommodated by the pocket.

[0042] Stiffening devices that include a stiffening plate allow the Strobel board and / or the shoe to be stiffened with a thin element, thereby minimizing variations in the shape of the Strobel board when the stiffening plate is placed in the pocket. In particular, the use of a stiffening plate minimizes the formation of bulges within the Strobel board and / or deformation of the Strobel board when the stiffening plate is placed in the pocket. Minimizing the formation of bulges within the Strobel board and / or deformation of the Strobel board contributes to optimizing the shoe's comfort.

[0043] In some embodiments, the stiffening means may comprise a stiffening element that is at least partially attached to the Strobel board. In particular, the stiffening means may comprise a stiffening element that is at least partially attached to the Strobel board by gluing. Additionally or alternatively, the stiffening means may comprise a stiffening element that is at least partially attached to the Strobel board by sewing.

[0044] For example, the stiffening element can be attached to the Strobel board at a boundary and / or outer surface of the stiffening element. In particular, at least one section of the boundary and / or outer surface of the stiffening element can be sewn and / or embroidered to the Strobel board. Specifically, the stiffening element can be configured such that at least one section of the boundary and / or outer surface of the stiffening element follows a section of the boundary and / or outer surface of the Strobel board. In other words, a section of the boundary and / or outer surface of the stiffening element can be sewn and / or embroidered to a section of the boundary and / or outer surface of the Strobel board. Additionally or alternatively, at least one section of the stiffening element can be attached to the Strobel board by gluing.For example, bonding a section of the stiffening element to the Strobel board may involve bonding at least a central and / or middle section of the stiffening element to the Strobel board. In some embodiments, the stiffening element may be bonded to the Strobel board substantially over its entire surface facing the Strobel board.

[0045] Attaching the stiffening element at least partially to the Strobel board by gluing and / or sewing facilitates the attachment of the stiffening element and at the same time ensures a stable attachment, e.g. an attachment that is resistant to external forces.

[0046] In general, the stiffening element and / or the stiffening plate can comprise at least one opening. For example, the stiffening element and / or the stiffening plate can comprise at least two, preferably at least three, and most preferably at least four openings. In particular, the at least one opening can have an elliptical geometry. For example, a principal semi-axis of the elliptical geometry can be substantially parallel to an extension direction of the Strobel board and / or shoe. In general, the stiffening element and / or the stiffening plate can comprise a rib-like structure. For example, the at least one opening of the stiffening element and / or the stiffening plate can be separated by at least one rib. For example, the stiffening element and / or the stiffening plate can comprise at least one, preferably at least two, and most preferably at least three ribs.Additionally or alternatively, the stiffening element and / or the stiffening plate may include a grid and / or cell structure.

[0047] A stiffening element and / or a stiffening plate with at least one opening, preferably arranged in a rib- and / or grid- and / or cell-like structure, enables sufficient stiffening of the Strobel board and the shoe comprising the Strobel board, while minimizing the weight of the stiffening element and / or stiffening plate.

[0048] Additionally or alternatively, the stiffening element and / or the stiffening plate may comprise at least one finger. For example, the stiffening element and / or the stiffening plate may be configured such that the at least one finger extends toward a medial forefoot section of the Strobel board. In particular, the at least one finger of the stiffening element and / or the stiffening plate may extend toward the medial forefoot section of the Strobel board such that the at least one finger is positioned in an area of ​​the Strobel board associated with a hallux of the foot. Additionally or alternatively, the stiffening element and / or the stiffening plate may be configured such that the at least one finger extends toward a lateral and / or central midfoot section of the Strobel board.In general, the length of at least one finger can be at least 0.5 cm, preferably at least 1 cm, more preferably at least 1.5 cm, even more preferably at least 2 cm, most preferably at least 2.5 cm.

[0049] In general, at least one section of the stiffening agent can be injected into the Strobel board.

[0050] For example, injecting at least one section of the stiffening agent into the Strobel board can include injecting at least one section of the stiffening agent into a prefabricated Strobel board. For example, the at least one section of the stiffening agent can be injected into the Strobel board in such a way as to form an insole board. In particular, injecting the at least one section of the stiffening agent into the Strobel board can include arranging a textile, e.g., the Strobel, in a mold. For example, the textile can comprise a non-combustible material. In particular, the non-combustible material can comprise a nonwoven material. Injecting the at least one section of the stiffening agent into the Strobel board can further comprise injecting a material into and / or onto the textile, e.g., into and / or onto the Strobel board.For example, the material can be injected into and / or onto the nonwoven material. In particular, the material can be injected into the textile in such a way that it penetrates at least partially into the textile, e.g., the nonwoven material. Generally, the (injected) material can comprise polyamide. Additionally or alternatively, the (injected) material can comprise a thermoplastic elastomer. For example, the thermoplastic elastomer can comprise polyetherblockamide.

[0051] In general, at least one section of the stiffening agent can be injected into the Strobel board such that it is located in the forefoot area of ​​the board. Additionally or alternatively, the stiffening agent can be injected into the Strobel board such that it is located in the midfoot area. For example, the stiffening agent can be injected into the Strobel board such that it extends from the forefoot area to the midfoot area.Injecting the stiffening agent into the midfoot area of ​​the Strobel board provides midfoot stiffness, thereby improving the shoe's propulsion and / or energy return, thus optimizing an athlete's performance. Furthermore, injecting the stiffening agent in such a way that it extends from the forefoot to the midfoot section of the Strobel board allows for simultaneous stiffening of both the forefoot and midfoot sections. This simultaneous provision of forefoot and midfoot stiffness maximizes the shoe's propulsion and / or energy return, thus optimizing the athlete's performance.

[0052] Additionally or alternatively, at least a portion of the stiffening agent may be poured and / or applied to the Strobel board. For example, the stiffening agent may be poured and / or applied to one side of the Strobel board that is designed to receive a foot. Additionally or alternatively, the stiffening agent may be poured and / or applied to one side of the Strobel board opposite the side designed to receive a foot. In particular, the pouring and / or application of the stiffening agent to the Strobel board may include the application of a material to the Strobel board. For example, the material may include polyurethane.

[0053] In general, the Strobel board can comprise a non-woven material. Additionally or alternatively, the Strobel board can comprise a knitted material. For example, the Strobel board can be a knitted Strobel board. In some embodiments, the Strobel board can comprise a woven material. In general, the Strobel board can comprise a non-combustible material. Additionally or alternatively, the Strobel board can comprise a material with limited elasticity. For example, the Strobel board can comprise a material that is essentially non-elastic. For example, a Strobel board that comprises a material with limited elasticity facilitates the application of a Strobel stitch, e.g., sewing the Strobel board to a shoe.

[0054] In general, the stiffening agent can be attached to and / or injected into the Strobel board such that a boundary of the stiffening agent and a boundary of the Strobel board are spaced apart. This spacing between the boundary of the stiffening agent and the boundary of the Strobel board can include separating the boundary of the stiffening agent and the boundary of the Strobel board by a distance. In particular, the boundary of the stiffening agent and the boundary of the Strobel board can be spaced apart such that the distance between the boundary of the stiffening agent and the boundary of the Strobel board is substantially uniform along the boundary of the stiffening agent and the boundary of the Strobel board.

[0055] For example, the distance between the edge of the stiffening means and the edge of the Strobel board can be at least 5 mm, preferably at least 10 mm, more preferably at least 15 mm, more preferably at least 20 mm, and most preferably at least 25 mm. Additionally or alternatively, the distance between the edge of the stiffening means and the edge of the Strobel board can be at most 10 cm, preferably at most 8 cm, more preferably at most 6 cm, even more preferably at most 4 cm, and most preferably at most 2 cm. In some embodiments, the distance between the edge of the stiffening means and the edge of the Strobel board can be at most 1.5 cm, preferably at most 1 cm, more preferably at most 0.8 cm, even more preferably at most 0.6 cm, and most preferably at most 0.4 cm.

[0056] In general, the shape and / or size of the stiffening means can be configured to essentially rescale the shape and / or size of a section of the Strobel board. For example, the shape and / or size of the stiffening means can be configured to essentially rescale the shape and / or size of a forefoot section of the Strobel board. Additionally or alternatively, the shape and / or size of the stiffening means can be configured to essentially rescale the shape and / or size of a midfoot section of the Strobel board. For example, the shape and / or size of the stiffening means can be rescaled so that the boundary of the stiffening means and the boundary of the Strobel board are spaced apart.For example, the shape and / or size of the stiffening means can be a rescaling of the shape and / or size of a section of the Strobel board by a factor of at least 0.8, preferably at least 0.85, more preferably at least 0.9, even more preferably at least 0.92, most preferably at least 0.95.

[0057] In some embodiments, the stiffening means may be at least partially attached to the insole of the shoe. In particular, the stiffening means may be attached to a side of the insole adapted to face the Strobel of the shoe. Additionally or alternatively, the stiffening means may be attached to a side of the insole adapted to face a midsole of the shoe.

[0058] For example, the side of the insole adapted to face a midsole of the shoe may comprise a side of the insole opposite the side of the insole adapted to face the Strobel of the shoe. In particular, the stiffening agent may be injected into the insole of the shoe. Additionally, the stiffening agent may be cemented and / or glued to the insole of the shoe. For example, the insole of the shoe may comprise a sock liner. In particular, the stiffening agent may be injected and / or cemented and / or glued into the sock liner such that the stiffening agent is located on a side of the sock liner adapted to face a midsole of the shoe.

[0059] In particular, the stiffening agent can be attached to and / or injected into a section of the insole, e.g., a midfoot section of the insole and / or a forefoot section of the insole. Generally, a region can be associated with the stiffening agent. For example, the region associated with the stiffening agent can comprise a region of the section of the insole to which the stiffening agent is / was attached and / or a region of the section of the insole into which the stiffening agent is / was injected. In particular, the region associated with the stiffening agent can comprise at least 40%, preferably at least 50%, more preferably at least 60%, even more preferably at least 70%, and most preferably at least 80% of a corresponding region of the insole. For example, the corresponding region of the insole can be, e.g.,The area of ​​the insole corresponding to the stiffening means comprises a portion of the insole that surrounds and / or encloses the stiffening means. In particular, the portion of the insole surrounding and / or enclosing the stiffening means can extend from its beginning to its end. In some embodiments, the beginning of the stiffening means may be located in a forefoot section of the insole. Additionally, the endpoint of the stiffening means may be located in a midfoot and / or heel area of ​​the insole.

[0060] For example, a shoe, such as a sports shoe, can have at least two insoles. For example, a first insole can be assigned a first stiffness level, and a second insole can be assigned a second stiffness level. In particular, the insole and / or the shoe can be designed such that the insoles can be replaced. For example, the shoe can initially contain the first insole, e.g., the first insole can be located within a cavity of the shoe. Then, the first insole can be removed from the shoe, e.g., through an ankle opening in the shoe. After the first insole has been removed from the shoe, the second insole can be inserted into the cavity of the shoe, e.g., through the ankle opening in the shoe. Generally, a first stiffening agent can be attached to and / or injected into the first insole.The first stiffening agent can be attached to and / or injected into one side of the first insole, which is adapted to face a midsole of the shoe. For example, the first stiffening agent can be configured to increase the stiffness and / or propulsion of the shoe, e.g., the shoe that comprises the first insole. Additionally, the second insole may not include any stiffening agent; for example, no additional stiffening material can be attached to and / or injected into the second insole. In other words, the stiffness assigned to the second insole corresponds to the stiffness of a typical, e.g., non-stiffened, insole.

[0061] Assigning at least two (interchangeable) insoles to the shoe, e.g., the sports shoe, with different stiffness levels, allows the shoe's stiffness to be adjusted to the athlete's specific and individual needs. For example, in a situation where a flexible (low stiffness) and cushioned shoe is preferred, the athlete can select an insole from the at least two available options that has low stiffness and / or no additional stiffening.

[0062] A second aspect of the present invention relates to a shoe, preferably a sports shoe. The shoe comprises the sole element according to one of the embodiments described above. Brief description of the characters

[0063] Exemplary embodiments of the invention are described below with reference to the figures. They show: Fig. 1A: Strobel board comprising a stiffening plate arranged within a closed pocket, the pocket being closed via a Velcro fastener; Fig. 1B: Strobel board comprising a stiffening plate, wherein part of the stiffening plate is arranged outside the open pocket; Fig. 2: Strobel board comprising a stiffening plate, the stiffening plate being attached to the Strobel board by sewing; Fig. 3: Strobel board comprising a stiffening plate, wherein the stiffening plate is attached to the Strobel board by gluing; Fig. 4A: Strobel board, wherein at least one section of the stiffening agent(s) is / are injected into a forefoot section of the Strobel board; Fig. 4B: Strobel board, wherein at least one section of the stiffening agent(s) is / are injected into the Strobel board such that the stiffening agent extends from the forefoot section to a midfoot section of the Strobel board; Fig. 4C: Strobel board, wherein at least one section of the stiffening means(s) is / are injected into the Strobel board such that a central section of the stiffening means is arranged on a midfoot section of the Strobel board; Fig. 5A: Schematic representation of a Strobel board, comprising a stiffening plate arranged within a pocket of the Strobel board; Fig. 5B: Schematic representation of the Strobel board, showing the insertion of the stiffening plate into the pocket of the Strobel board; Fig. 5C: Schematic representation of an exemplary embodiment of a stiffening plate designed to be received in the pocket of the Strobel board. Detailed description of preferred embodiments

[0064] Only some possible embodiments of the invention are described in detail below. It is understood that these exemplary embodiments can be modified and combined in various ways whenever they are compatible, and that certain features can be omitted if they appear unnecessary.

[0065] Fig. 1A and Fig. Figure 1B illustrates an exemplary embodiment of a sole element 100 designed to be arranged in a shoe. The sole element 100 comprises a stiffening plate 110, a Strobel board 120, and a pocket 130. The Strobel board 110 comprises a nonwoven material. The pocket 130 is arranged in a region 105a of the sole element 100, which is designed to accommodate a forefoot. In some embodiments, the pocket 130 can be arranged in the region 105a of the sole element 100 such that it extends at least partially into a region 105b of the sole element 100, which is designed to accommodate a midfoot. Additionally, the pocket 130 can be arranged in the area 105a of the sole element 100 such that it extends at least partially into the area 105b and an area 105c of the sole element 100, which is designed to accommodate a hind foot.The bag 130 is attached to the Strobel board 120 on a side of the Strobel board 120 that is adapted to face the inside of a shoe. In particular, a section of a boundary and / or outer surface of the bag 130 is attached to the Strobel board 120.

[0066] The size and shape of the boundary and / or outer area of ​​the pocket 130 essentially follows the size and shape of the Strobel board 130 in the forefoot area 105 of the sole element. The pocket 130 includes an opening 132. The width of the opening 132 essentially corresponds to a width associated with the Strobel board 120 in an area associated with the opening 132.

[0067] As in Fig. As illustrated in Figure 1B, the pocket 130 is configured to receive the stiffening plate 110. In particular, the size and shape of the pocket 130 are such that the cavity formed by the pocket 130 can receive the stiffening element 110. For example, the size and shape of the pocket 130 substantially correspond to the size and shape of the stiffening plate 110. In particular, the stiffening plate 110 comprises two recesses 115a, 115b, e.g., a first recess 115a in a rear section of the stiffening plate 110 and a second recess 115b in a front section of the stiffening plate. In particular, the pocket 130 is configured such that the cavity formed by the pocket substantially mirrors the recess 115b of the stiffening plate 110. For example, a section of bag 130, corresponding to recess 115b, is attached to Strobel board 120.In particular, the section of pocket 130 corresponding to recess 115b is attached to Strobel board 115b in such a way that the section is excluded from the cavity formed by pocket 130.

[0068] The bag 130 also includes a Velcro fastener 134. Fig. Figure 1A illustrates the hook and loop fastener 134 in a closed configuration and Fig. Figure 1B illustrates the hook-and-loop fastener 134 in an open configuration. The hook-and-loop fastener 134 is designed to open and / or close at least one section of the pocket 130. In particular, the hook-and-loop fastener is designed to close at least one section of the pocket 130 in such a way as to prevent (unintentional) removal of the stiffening plate 110 from the pocket. Additionally, the hook-and-loop fastener 134 is designed to open at least one section of the pocket 130 in such a way as to allow (intentional) removal and / or replacement of the stiffening plate 110. In particular, the first recess 115a in the rear area of ​​the stiffening plate 110 and the hook-and-loop fastener 134 are configured such that the hook-and-loop fastener 134 can be closed by the recess 115b.In particular, the first recess 115a in the rear area of ​​the stiffening plate 110 and the hook and loop fastener 134 are configured such that the hook side (loop side) of the hook and loop fastener 134 touches the opposite loop side (hook side) of the hook and loop fastener 134 through the recess 115b.

[0069] Fig. Figure 2 illustrates an exemplary embodiment of a sole element 200, wherein the sole element 200 comprises a stiffening plate 210 and a Strobel board 220. The Strobel board 220 comprises a nonwoven material. The stiffening plate 210 is arranged on a section 205a of the sole element 200, which is configured to receive a forefoot. In some embodiments, the stiffening plate 210 can be arranged in the region 205a of the sole element 200 such that it extends at least partially into a region 205b of the sole element 200, which is configured to receive a midfoot. Additionally, the stiffening element 210 can be arranged in the area 205a of the sole element 200 such that it extends at least partially into the area 205b and an area 205c of the sole element 200, which is designed to accommodate a hind foot.

[0070] The stiffening element 210 comprises two recesses 215a, 215b, e.g., a first recess 215a in a rear section of the stiffening plate 210 and a second recess 215b in a front section of the stiffening plate 210. The stiffening plate 210 is attached to the Strobel board 220. In particular, the stiffening plate 210 is attached to the Strobel board 220 by a seam 230. Specifically, the stiffening plate 210 is attached to the Strobel board 220 by the seam 230 substantially along the entire boundary and / or outer area of ​​the stiffening plate 210. In some embodiments, the stiffening plate 210 may be attached to the Strobel board 220 by a seam 230 along a section of the boundary and / or outer area of ​​the stiffening plate.For example, the stiffening plate 210 can be attached to the Strobel board 220 by a seam 230 only along a lateral boundary and / or a medial boundary of the stiffening plate 210; e.g., the stiffening plate 210 cannot be sewn to the Strobel board 220 along a section of the boundary and / or outer surface of the stiffening plate 210 that is associated with the recess 215a and / or the recess 215b.

[0071] Fig. Figure 3 illustrates an exemplary embodiment of a sole element 300, wherein the sole element 300 comprises a stiffening plate 310 and a Strobel board 320. The Strobel board 320 comprises a nonwoven material. The stiffening plate 310 is arranged on a section 305a of the sole element 300, which is configured to receive a forefoot. In some embodiments, the stiffening plate 310 can be arranged in the region 305a of the sole element 300 such that it extends at least partially into a region 305b of the sole element 300, which is configured to receive a midfoot. Additionally, the stiffening element 310 can be arranged in the area 305a of the sole element 300 such that it extends at least partially into area 305b and an area 305c of the sole element 300, which is designed to accommodate a hind foot. The stiffening element 310 comprises two recesses 315a, 315b, e.g.A first recess 315a in a rear section of the stiffening plate 310 and a second recess 315b in a front section of the stiffening plate 310. The stiffening plate 310 is attached to the Strobel board 320. In particular, the stiffening plate 310 is attached to the Strobel board 320 by gluing the stiffening plate 310 to the Strobel board 320.

[0072] Fig. Figure 4A illustrates an exemplary embodiment of a sole element 400, wherein the sole element 400 comprises stiffening means 410 of at least one section of the sole element 400. The stiffening means 410 of at least one section of the sole element are arranged in a region 405a configured to receive a forefoot. The sole element 400 further comprises a Strobel board 420. The Strobel board 420 may comprise a nonwoven material. In some embodiments, the Strobel board may comprise a knitted and / or woven material. The stiffening means 410 is / are injected into the Strobel board 420. For example, the stiffening means 410 may be injected into the Strobel board 420 such that it infiltrates at least one section of the Strobel board 420, e.g., the Strobel board material. In particular, the stiffening agent may comprise 410 polyamide and / or a thermoplastic elastomer, e.g. polyether block amide.

[0073] The stiffening means 410 essentially follows the shape of the Strobel board 420. In particular, the shape of the stiffening means 410 in region 405a essentially follows the shape of the Strobel board 420 in region 405a. In particular, at least one section of a boundary and / or outer area of ​​the stiffening means 410 follows the boundary and / or outer area of ​​the Strobel board 420. In general, the stiffening means 410 can be configured and / or arranged such that the boundary of the stiffening means 410 is spaced apart from the boundary of the Strobel board 420. For example, the distance between the boundary of the stiffening means 410 and the Strobel board 420 can comprise a distance δ.Setting up and / or arranging the stiffening means 410 such that its boundary is spaced apart from the boundary of the Strobel board 420 may include ensuring that the distance between the boundary of the stiffening means 410 and the Strobel board 420 is substantially uniform along the boundary of the stiffening means 420 and / or along the boundary of the Strobel board 410. For example, the uniform distance may be the distance δ. In some embodiments, the stiffening means 410 may be set up to substantially correspond to a rescaling of a section of the Strobel board 420. For example, the stiffening means 410 may be set up to substantially correspond to a rescaling of a section of the Strobel board 420 in a forefoot region 405a.In particular, the stiffening element 410 can be rescaled such that its boundary is spaced δ away from the boundary of the Strobel board 420. The rescaled Strobel board 420 is indicated by the dotted line 402. Specifically, there is a distance δ between the rescaled Strobel board 402 (dotted line) and the boundary of the (unrescaled) Strobel board 420.

[0074] Fig. Figure 4B illustrates another exemplary embodiment of the sole element. The sole element 100 comprises the Strobel board 420 and stiffening means 410 of at least one section of the Strobel board 420. In particular, the stiffening means 410 is / are attached to and / or injected into a forefoot section 405a of the Strobel board 420 and attached to and / or injected into a midfoot section 405b of the Strobel board 420. Additionally, the stiffening means is / are attached to and / or injected into a hindfoot / heel section 405c of the Strobel board 420. In particular, the stiffening means 410 is / are attached to and / or injected into the Strobel board 420 in such a way that it / they extend from the forefoot section 405a of the Strobel board 420 to the hindfoot / heel section 405c of the Strobel board 420.

[0075] Fig. Figure 4C illustrates another exemplary embodiment of the sole element. The sole element 100 comprises the Strobel board 420 and stiffening means 410 of at least one section of the Strobel board 420. The stiffening means 410 is / are attached to and / or injected into the Strobel board 420 such that a central section 414 of the stiffening means 410 is located in a midfoot section 405b of the Strobel board 420. In particular, the stiffening means 410 extends toward the forefoot section 405a of the Strobel board 420. Additionally, the stiffening means 410 extends toward the hindfoot / heel section 405c of the Strobel board 420. In particular, two fingers 418a, 418b extend from the central section 414 of the stiffening means 410 to the forefoot section 405a of the Strobel board.Similarly, two fingers 418c, 418d extend from the central section 414 of the stiffening means 410 to the hind foot / heel section 405c of the Strobel board 410. Generally, the fingers 418a, 418b, 418c, 418d extend from the central section 414 such that they follow an (imaginary) boundary 402. For example, the (imaginary) boundary may encompass a rescaled boundary of the Strobel board 410.

[0076] Fig. Figure 5A illustrates an exemplary embodiment of the sole element. The sole element comprises a Strobel board 520, and a pocket 530 is arranged on the Strobel board 520. For example, the pocket 530 can be contained within the Strobel board 520; for instance, the Strobel board 520 and the pocket 530 can be formed as one piece. Additionally or alternatively, the pocket 530 can be attached to the Strobel board 520; for example, the pocket 530 can be sewn and / or glued to the Strobel board 520. The pocket is arranged on a side of the Strobel board 520 that is adapted to face an insole and / or a foot. The pocket 530 is configured to receive a stiffening element 510. In the Fig. In the situation illustrated in Figure 5A, the stiffening element 510 is arranged in the pocket 530, e.g., the stiffening element 510 has been inserted into the pocket 530. In particular, the pocket 530 is arranged in a forefoot section 505a of the Strobel board 520, e.g., a section of the Strobel board 520 configured to receive a forefoot. The size and / or shape of the pocket 530 is based on the size and / or shape of the stiffening element 510. In particular, the pocket 530 includes a finger 534 that extends from and / or emerges from a base section of the pocket 530. For example, the finger 534 of the pocket 530 may extend from and / or emerge from the base section of the pocket to reach a toe area of ​​the Strobel board 520. In particular, the size and / or shape of finger 534 are adapted such that finger 534 can accommodate finger 512 of stiffening element 510 (see Fig. 5B or Fig. 5C).

[0077] Fig. Figure 5B illustrates a situation in which the stiffening element 510 is not (yet) arranged in the pocket 530 of the Strobel board 520. In particular, the stiffening element 510 can be inserted into the pocket 530 of the Strobel board 520 through the opening 532 of the pocket 530. For example, the stiffening element 510 can be inserted into the pocket 530 through the opening 532 by moving the stiffening element 510 in the direction m→ is moved, for example, by moving the stiffening element 510 towards (and through) the opening 532 of the pocket 530. In particular, the stiffening element can be moved and / or displaced such that the finger 512 of the stiffening element 510 is received by the finger 534 of the pocket 530.

[0078] Fig.Figure 5C illustrates the exemplary stiffening element 510. The stiffening element 510 comprises a finger 512 extending from and / or emerging from a base section of the stiffening element 510. The base section of the stiffening element 510 comprises a plurality of openings 514a, 514b, 514c, 514d and a plurality of ribs 516a, 516b, 516c. In particular, the openings 514a, 514b, 514c, 514d are separated by the ribs 516a, 516b, 516c. For example, opening 514b is separated from opening 514c by rib 516b. The openings 514a, 514b, 514c, 514d have an elliptical shape. In particular, a semi-major axis of the elliptical shape of the openings 514a, 514b, 514c, 514d is substantially parallel to an extension direction of the Strobel board 520. In some embodiments, the openings 514a, 514b, 514c, 514d of the stiffening element 510 may have different shapes and / or sizes.For example, opening 514a can include a first shape and / or size, and opening 514b can include a second shape and / or size.

Claims

[1] Sole element (100) designed to be arranged in a shoe, preferably a sports shoe, wherein: the sole element (100) comprises means for stiffening (110) at least one section (105a) of the sole element (100), at least one section (105a) of the sole element (100) is arranged at least in an area designed to accommodate a forefoot, the sole element (100) is designed to be positioned in the shoe when the shoe is worn, and the sole element (100) is a Strobel board (120) and / or an insole. [2] Sole element (100) according to claim 1, wherein the stiffening means (110) of at least one section of the sole element is / are configured to: to stiffen at least one section (105a) of the shoe which is designed to accommodate a forefoot; and / or to stiffen at least one section (105b) of the shoe which is designed to accommodate a midfoot; preferably wherein the stiffening means is / are arranged such that it / they extend from the section (105a) of the shoe which is designed to accommodate a forefoot to the section (105b) of the shoe which is designed to accommodate a midfoot. [3] Sole element (100) according to claim 2, wherein stiffening at least one section of the shoe, which is configured to accommodate a forefoot and / or a midfoot, comprises increasing propulsion and / or reducing stud pressure associated with the shoe. [4] Sole element (100) according to one of claims 1 to 3, wherein the sole element (100) is arranged in the shoe such that at least one section (110) of the sole element (100) is replaceable, preferably wherein at least one section of the stiffening means(s) (110) is replaceable. [5] Sole element (100) according to claim 4, wherein the at least one section (110) of the sole element, which is replaceable, is provided to be replaced and / or removed through an opening in the shoe, preferably an ankle opening in the shoe. [6] Sole element (100) according to one of claims 1 to 5, wherein the stiffening means (110) comprises a pocket (130) which is configured to receive a stiffening element (110), preferably wherein the pocket (130) is configured to receive the stiffening element (110) through an opening (132). [7] Sole element (100) according to claim 6, wherein: the bag (130) is contained in the Strobel board (120), and / or the bag (130) is at least partially attached to the Strobel board (120), preferably wherein the bag (130) is attached to the Strobel board (130) by sewing and / or knitting. [8] Sole element (100) according to claim 6 or 7, wherein the pocket (130) is arranged on a side of the Strobel board (120) which is adapted to be facing an inside of the shoe. [9] Sole element (100) according to one of claims 6 to 8, wherein the pocket (130) comprises means for fastening (134) the stiffening element (110), preferably wherein the means for fastening (134) comprises a hook and loop fastener. [10] Sole element (100) according to any one of claims 1 to 9, wherein the stiffening means (110) comprises a stiffening plate. [11] Sole element (100) according to claims 1 to 10, wherein the stiffening means (110) comprises a stiffening element (110) which is at least partially attached to the Strobel board. [12] Sole element (200, 300) according to claim 11, wherein the stiffening element (210, 310) is attached to the Strobel board by gluing and / or sewing (230). [13] Sole element (400) according to one of claims 1 to 12, wherein at least a part of the stiffening means (410) is injected into the Strobel board (420). [14] Sole element (100) according to one of claims 1 to 13, wherein the Strobel board (120) comprises a nonwoven material. [15] Sole element according to one of claims 1 to 14, wherein the stiffening means is / are at least partially attached to the insole of the shoe, preferably wherein the stiffening means is / are attached to a side of the insole which is adapted to be facing the Strobel of the shoe and / or a midsole of the shoe. [16] Shoe, preferably a sports shoe, comprising the sole element (100) according to any one of claims 1 to 15.

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