sole, comprising a reinforcement frame

Abstract

The present disclosure relates to a sole (101) for a shoe (100), in particular for a sports shoe, such as a running shoe, wherein the sole (101) comprises: a midsole (110); and a reinforcement frame (130), wherein at least a first part of the reinforcement frame (130) substantially surrounds an outer boundary (111) of the midsole (110) in one or more of the following: a lateral side region (115), a medial side region (116), a heel region (117) and a toe region (118) of the midsole (110), thereby defining an open space (112), wherein a part of the midsole (110) is received in the open space (112).

Description

1. Technical area

[0001] The present disclosure relates to a sole for a shoe, in particular for a sports shoe, such as a running shoe. The present disclosure also relates to a shoe, in particular a sports shoe, such as a running shoe, comprising such a sole. 2. State of the art

[0002] Soles for shoes, especially soles for sports shoes such as running shoes, are well known and have various purposes and applications.

[0003] A shoe sole typically serves a number of different functions, such as reducing or dampening the impact forces that occur at foot strike and providing traction to prevent the wearer's foot from slipping. In addition, a shoe sole typically serves the function of providing a degree of stability to the wearer's foot, thus reducing the risk of twisting the ankle or other types of injuries, such as plantar fascia injury or muscle strain, etc. Yet another function of a shoe sole, particularly for performance shoes such as running shoes, is to enable good transmission of forces from the athlete's legs through their feet to the ground and an efficient running form to improve the athlete's performance.

[0004] Some of the many particularly relevant requirements in this context are the provision of a sole for a shoe that enables safer walking, supports the wearer over longer distances, has a high degree of cushioning, provides the wearer with great energy return and is lightweight.

[0005] In this context, the following exemplary prior art documents may be mentioned.

[0006] Prior art document EP 3 868 242 A2 relates to a sole for a shoe, in particular a running shoe, comprising at least two reinforcing elements extending in a front half of the sole, wherein at least a first of the reinforcing elements extends further rearward beyond the midfoot region and into a heel region of the sole and wraps up to a rear portion of the ankle region.

[0007] Prior art document US 10 842 224 B2 relates to a plate for footwear with a sole structure comprising a foremost point located in a forefoot region of the sole structure, a rearmost point located closer to a heel region of the sole structure than the foremost point, and a concave portion extending between the foremost point and the rearmost point. The concave portion includes a constant radius of curvature from the foremost point to a metatarsophalangeal (MTP) point of the sole structure. The MTP point is opposite the MTP joint of a foot during use.

[0008] Prior art document EP 10 024 73 B1 relates to a device for increasing the movement stability of shoes for tennis or similar sports, comprising a plate-like support that is substantially Y-shaped and has a first curved portion adapted to follow the profile of the heel area and a second portion adapted to follow the outer profile of the foot. The second portion widens transversely with a third portion to influence the inner metatarsal region of the foot. The support is coupled in a downwardly directed region to a midsole made of shock-absorbing material to distribute the load transmitted thereto by the moving foot.

[0009] Prior art document KR 10 2 097 381 B1 relates to a shoe sole with shock absorption and walking impulse functions and a shoe incorporating them. The document discloses a first midsole supporting a rearfoot part with respect to an arched part of a foot; a second midsole supporting a forefoot part with respect to the arched part of a foot; and a shock absorption and walking impulse plate including a first support part mounted on an upper surface of the first midsole, a second support part mounted on a predetermined portion of a lower surface of the second midsole, and a third support part installed between the first midsole and the second midsole.The shock absorption and walking impulse plate is characterized in that when a load is applied to the rear foot part, the first support is elastically bent and deformed so that the first midsole can absorb shock, and when a load is applied to the forefoot part, impulse is transmitted to the front of the second support part by elasticity in the second support part after being elastically bent and deformed so that the second midsole can have rebound elasticity.

[0010] Prior art document US 7,263,788 B2 relates to a footwear with a stabilizing element incorporated into a sole structure. The stabilizing element is located primarily in the midfoot region of the footwear, but extends into both the forefoot and heel regions. In one embodiment, the stabilizing element includes five stabilizing elements extending from a connecting element. The function of the stabilizing elements is to provide support along the longitudinal length of the foot to limit non-axial, vertical bending in the midfoot and heel regions; to allow the forefoot to bend axially with respect to the heel; and to enable forefoot flexion.

[0011] Further prior art is disclosed, inter alia, in US 8 984 775 B2 and US 2022 / 0 061 457 A1.

[0012] The proposed solutions still have some shortcomings when it comes to meeting the above-mentioned requirements. For example, most of the known solutions provide reinforcement elements arranged under the wearer's foot and heel. While this could stiffen the sole and thus has the potential to provide a certain degree of energy return, the underfoot feel is quite stiff for the wearer. This is particularly detrimental during athletic activities. Thus, there is still room for improvement.

[0013] Against this background, it is an object of the present invention to provide an improved sole for a shoe that at least partially overcomes the deficiencies of the prior art. In particular, it is an object to provide a sole that improves performance characteristics, such as energy return to the wearer, without compromising other properties, such as providing sufficient cushioning. A general goal is to reduce the costs of providing such a sole for a shoe and to provide a lightweight sole. 3. Summary of the invention

[0014] The above-mentioned objects are at least partially achieved by the subject matter of the independent claims. Preferred embodiments are subject matter of the dependent claims, and other suitable aspects of the present invention are described by the overall disclosure of the present application. It is noted that the headings in the present disclosure are provided solely for the purpose of assisting in maintaining an overview during reading. The headings do not imply that features of the respective embodiments cannot be combined. sole for a shoe

[0015] In one aspect, the objects are achieved by a sole for a shoe, in particular for a sports shoe, such as a running shoe, the sole comprising: a midsole; and a reinforcing frame, wherein at least a first part of the reinforcing frame substantially surrounds an outer boundary of the midsole in one or more of the following: a lateral side region, a medial side region, a heel region and a toe region of the midsole, thereby defining an open space, wherein a part of the midsole is received in the open space.

[0016] In this way, the sole for a shoe, in particular for a sports shoe, provides improved stability, improved comfort, and improved energy return to the wearer. Overall, improved performance properties can be provided. This makes the sole particularly useful for sporting activities. As a result, the sole can provide significant advances when used in running shoes, in particular for long-distance running shoes. However, people who wear such shoes on occasions other than running can also benefit from these advantages. The sole according to the present disclosure has the further advantage that it is relatively lightweight, that it enables safer running, and that the midsole, particularly when provided with a foam as described elsewhere herein, can provide advantageous cushioning effects.

[0017] In most prior art solutions, rather rigid reinforcement elements are provided that cover a large lower portion of the midsole, e.g., the underfoot portion of the midsole, also referred to as the midsole's footbed. Without wishing to be bound by theory, it is believed that this can be disadvantageous, as it provides the wearer with a rather rigid underfoot feel. Additionally, this can impair the wearer's underfoot cushioning. According to the sole as proposed herein, these disadvantages of the prior art can be overcome while still providing the wearer with sufficient stability.

[0018] Another advantage of the reinforcement frame being in the form of a frame and surrounding the outer perimeter of the midsole is that the reinforcement frame is provided in dedicated locations where it is most needed and omitted where it is detrimental to the desired cushioning effect. It is understood that, due to the reinforcement frame surrounding the outer perimeter of the midsole in one or more of a lateral side region, a medial side region, a heel region, and a toe region of the midsole, a large underfoot area of ​​the foot can be left open, defining the open space. This can improve the cushioning effect of the midsole because it is not particularly compromised by the reinforcement frame interfering with a portion where cushioning is desired.For example, the reinforcement frame may not significantly interfere with the midsole, may not block the midsole, and / or may not interfere with the midsole in areas of the foot where cushioning is desired, e.g., in the underfoot portion.

[0019] In this way, the sole according to the present disclosure can guide the wearer's impact forces without adversely affecting underfoot cushioning. Specifically, considering a typical athlete's gait cycle during running, the sole begins to act during the loading phase, enabling dynamic stiffening of the midsole, attributable to the reinforcement frame, as the athlete moves toward the big toe and into a push-off, e.g., a toe-off.

[0020] The term "midsole" as used in the present disclosure may be referred to as a layer of material that may be located between an outsole of a shoe, e.g., the lower part of the sole that contacts the ground, and a shoe upper, e.g., the part of the shoe that covers the top of a wearer's foot.

[0021] The term "reinforcing frame" as used in the present disclosure may be referred to as a structural element that can provide the function of reinforcement. The structural element has the shape of a frame. Although possible, the reinforcing frame does not necessarily have to form a closed loop or frame. For example, the reinforcing frame may have two distinct ends. For example, the frame could be considered a paper clip or the like, which is an open frame. The reinforcing frame may be understood to form a frame, e.g., enclosing something.

[0022] The "outer boundary" of the midsole, as used in the present disclosure, may be referred to as a boundary that faces the outside of the midsole. For example, the outer boundary of the midsole may be an outermost portion of the midsole. As an illustrative example, an inner boundary would be a boundary that faces a central portion of the midsole. Thus, the inner boundary could be considered opposite the outer boundary. The outer boundary of the midsole may be one or more of a surface, edge, line, perimeter, or the like of the midsole. As can be deduced from the term "boundary," the "outer boundary" may indicate a boundary or the like. For example, the outer boundary may be free from the surroundings or the like.The outer perimeter of the midsole may provide a discernible demarcation between the midsole and other parts of the shoe and / or between the midsole and the surrounding environment. As a result, the midsole may not be present in the outward direction beyond the outer perimeter of the midsole. Nevertheless, it could well be the case that the midsole is configured such that portions of the midsole protrude outward to a greater extent than the "outer perimeter" of the midsole. Although such portions may also be referred to as having an outer perimeter of the midsole, the "outer perimeter" of the midsole, which protrudes outward to a lesser extent, can still be considered an outer perimeter of the midsole.

[0023] It should be noted that although at least a first portion of the reinforcement frame substantially surrounds an outer perimeter of the midsole in one or more of a lateral side region, a medial side region, a heel region, and a toe region, this does not mean that the entire reinforcement frame necessarily surrounds an outer perimeter of the midsole—this may or may not be the case. It is contemplated within the present invention that a second portion of the reinforcement frame, different from the first portion, does not surround an outer perimeter of the midsole.For example, the reinforcement frame may comprise a second portion, such as a substantially straight midfoot segment described elsewhere herein, which may not surround an outer perimeter of the midsole in one or more of a lateral side region, a medial side region, a heel region, and / or a toe region of the midsole. Of course, it is contemplated within the present disclosure that the reinforcement frame may comprise further portions that may or may not surround an outer perimeter of the midsole. Furthermore, the first portion of the reinforcement frame, the second portion of the reinforcement frame, and / or any further portion of the reinforcement may be integrally formed as one piece. Alternatively, they may be formed as separate pieces and connected to one another.

[0024] As described elsewhere herein, the first portion of the reinforcing frame that substantially surrounds an outer perimeter of the midsole in one or more of a lateral side region, a medial side region, a heel region, and / or a toe region of the midsole may, for example, be one or more of: the substantially straight lateral segment, the curved heel segment, the substantially straight medial segment, and the curved toe segment.

[0025] As one skilled in the art will understand, because at least a first portion of the reinforcement frame substantially "surrounds" an outer perimeter of the midsole, the outer perimeter of the midsole may not be fully exposed to the environment, as it may be at least partially covered by the reinforcement frame. Furthermore, the outer perimeter of the midsole may not be fully visible from the outside due to the reinforcement frame. In one example, the term "surround" means to enclose something on all sides. In one example, the term "surround" means to extend around an edge or rim of something.

[0026] The reinforcement frame substantially surrounds an outer perimeter of the midsole in one or more of "a lateral side region, a medial side region, a heel region, and a toe region of the midsole," which may be understood to mean that these regions are substantially wrapped, enclosed, or the like by the reinforcement frame. In other words, the reinforcement frame may be substantially disposed around those regions of the midsole, which are described in more detail elsewhere herein. As implied by the term "surrounding," it may not be sufficient for the reinforcement frame to form a flat shape in a plane, such as a horizontal plane, that merely lies on a flat plane of the midsole, such as a flat heel region of the midsole.In such a scenario, the flat heel region of the midsole cannot be considered surrounded by the reinforcement frame. However, the term "surrounding" does not exclude "sandwich"-like arrangements as described herein. The term "substantially" surrounding an outer perimeter may mean that the reinforcement frame surrounds an outer perimeter of the midsole by at least 60%, preferably at least 70%, more preferably at least 80%, most preferably at least 90% of the outer perimeter.

[0027] The term "open space" as used in the present disclosure can be referred to as a three-dimensional volume. Furthermore, a part of the midsole is accommodated in the open space. This may mean that the open space is not empty. Furthermore, it is not excluded that the open space may be at least partially filled with one or more additional parts, components, elements, or the like. However, the open space may not be filled with the reinforcing frame, as one skilled in the art will understand. Otherwise, the reinforcing frame could not define an open space. As one skilled in the art will understand, the open space may be a macroscopic space, i.e., a space that could easily be recognized as such by one skilled in the art.

[0028] The "lateral side region" and / or the "medial side region" of the midsole may refer to a side and / or edge of the midsole that extends from a heel region to at least one midfoot region. For example, the "lateral side region" and / or the "medial side region" of the midsole may extend from a heel region to a small toe portion.

[0029] The sole for a shoe described herein may be particularly useful in conjunction with and / or when applied to a sports shoe, such as a running shoe, especially a long-distance running shoe or the like. However, it should be noted that the sole could be used with any type of footwear, including, but not limited to, soccer shoes, hiking shoes, sneakers, basketball shoes, rugby shoes, baseball shoes, golf shoes, tennis shoes, and cross-training shoes. Furthermore, the sole can be used in conjunction with shoes for any type of athletic activity.

[0030] The term “physical activity” shall be understood to include one or more and / or any combination of at least the following non-exhaustive list: aerobics, athletic exercises, running, hiking, climbing, group fitness classes, walking, cycling, yoga, soccer, tennis, football, basketball, training, volleyball, gymnastics, weightlifting, cross-training, baseball, softball, rugby, field hockey, wrestling, squash, track and field (such as sprinting, long jump, high jump), cross country skiing.

[0031] Furthermore, it may be possible for the reinforcement frame providing the additional benefits described herein to be used additionally or alternatively for garments and / or equipment used in athletic activities. That is, the reinforcement frame is not necessarily limited to the example of a shoe sole. It could be possible for the reinforcement frame concept to be applied to any type of activity or athletic activity requiring stability, comfort, or, in general, any support for the wearer.

[0032] Nevertheless, it has been found that the advantages of the reinforcement frame described herein are particularly pronounced when applied to a sole for a shoe, such as a shoe used during a sporting activity.

[0033] The "wearer" referred to herein can be any type of person capable of wearing footwear. The term "wearer" can be used synonymously with the terms "user," "athlete," "human," or the like. Surrounded

[0034] In a preferred embodiment of the sole for a shoe as described herein, a part of the outer boundary of the midsole, which is substantially surrounded by the reinforcing frame, faces a lateral side of the sole and / or a medial side of the sole.

[0035] This can be understood as meaning that the reinforcing frame surrounds an outer boundary which may face one side, e.g., a horizontal direction versus a vertical direction.

[0036] This has the advantage of improving the mechanical support and / or stability of the midsole, as the reinforcement frame can act as a shield, essentially supporting the midsole from the outside in. The arrangement can also be considered self-supporting due to the presence of the reinforcement frame on the outside.

[0037] In a preferred embodiment of the sole for a shoe as described herein, the open space is arranged substantially in a plane defined by a heel-to-toe axis and a medial-to-lateral axis of the sole.

[0038] This has the advantage that the open space is provided essentially in a horizontal plane, where cushioning is more important to a wearer, than a plane arranged along a vertical axis. Because the open space is essentially free of the reinforcing frame, it cannot obstruct the midsole in this horizontal plane, where the wearer's foot needs cushioning. Sandwiched structure and form-fitting connection of the midsole

[0039] In a preferred embodiment of the sole for a shoe as described herein, the midsole comprises an upper midsole layer and a lower midsole layer, wherein the reinforcing frame is enclosed between the upper midsole layer and the lower midsole layer.

[0040] This has the advantage of allowing different materials to be used in the upper and lower midsole layers. For example, the stiffness of a material in the upper midsole layer may differ from that of the lower midsole layer. This has the added advantage of providing specific functions for these layers.

[0041] Additionally, the reinforcement frame sandwiched between the upper and lower midsole layers can provide additional support for the reinforcement frame. For example, gravitational forces alone can essentially hold the reinforcement frame in place, preventing it from significantly changing position under compressive load.

[0042] As will be understood by those skilled in the art, the upper midsole layer may be arranged in an upward direction (e.g., along the vertical axis from the ground to the sky as viewed during normal use of the shoe) relative to the reinforcement frame. Furthermore, the lower midsole layer may be arranged in a downward direction (e.g., along the vertical axis from the sky to the ground as viewed during normal use of the shoe) relative to the reinforcement frame.

[0043] Alternatively, in light of the present disclosure, it may be possible for the upper midsole layer and the lower midsole layer to be formed as a single unit. In such an alternative, the upper midsole layer and the lower midsole layer may not be separate, but may form a single midsole.

[0044] In a preferred embodiment of the sole for a shoe described herein, the reinforcing frame lies in a sandwich-like arrangement substantially flat between surfaces of the upper midsole layer and the lower midsole layer.

[0045] In a preferred embodiment of the sole for a shoe described herein, the upper midsole layer and the lower midsole layer are engaged with each other via a positive connection, thereby defining the outer boundary of the upper midsole layer, which is substantially surrounded by the reinforcing frame.

[0046] To be engaged can be understood as being taken in and / or receiving.

[0047] This has the advantage that the upper midsole layer and the lower midsole layer can be easily assembled, providing a rigid structure. Although possible, the rigid structure does not necessarily require separate fastening means such as adhesives or the like. The arrangement can therefore be considered at least partially self-supporting.

[0048] The positive connection can be understood in such a way that the upper midsole layer and the lower midsole layer can be shaped or configured to fit into each other. Furthermore, the reinforcing frame can also be shaped or configured to fit in a sandwich-like arrangement between surfaces formed by the upper midsole layer and the lower midsole layer. The various parts participating in the sandwich-like arrangement fit into each other due to their substantially complementary geometry. This can create a tight and secure fit without the need for additional fasteners or adhesives, but the use of additional fasteners or adhesives may not necessarily be precluded. The connection can rely on the geometry of the upper midsole layer and the lower midsole layer to create a strong and stable attachment.It is noted that in various examples, the use of additional fasteners or adhesives is preferred, for example, cement or the like may be used to improve the fit between the upper midsole layer and the lower midsole layer.

[0049] It should be noted that co-molding can be used as an alternative to assemble the upper midsole layer and the lower midsole layer. Co-molding may also be referred to as overmolding or two-shot molding. Co-molding can be a manufacturing process for creating a part or product made from two or more different materials. This process may involve injecting two or more materials into a mold in a sequential manner to create a single, integrated component with distinct layers or sections. The materials used in co-molding can vary in terms of color, texture, hardness, and even chemical properties.

[0050] The outer perimeter of the midsole, which is essentially surrounded by the reinforcing frame, can be defined by such an engagement and such a positive connection. This has the advantage that the outer perimeter of the thus defined midsole can be covered by the reinforcing frame. This has the potential to create a smooth outer perimeter of the sole.

[0051] In one example, the reinforcing frame may at least partially fill a gap provided between the upper midsole layer and the lower midsole layer when viewed along the vertical axis.

[0052] In a preferred embodiment of the sole for a shoe described herein, the upper midsole layer is at least partially received in an opening formed by the lower midsole layer.

[0053] This further contributes to a tight and secure fit without the need for additional fasteners or adhesives. However, the use of additional fasteners or adhesives cannot necessarily be precluded simply by the positive fit.

[0054] This embodiment can be understood to mean that the upper midsole layer may comprise an extension, a projection, a protrusion, or the like. This is at least partially received in the opening formed by the lower midsole layer, or more generally in a recess formed by the lower midsole layer. As a result, an outer surface of the extension, projection, protrusion, or the like of the upper midsole layer may at least partially contact an inner surface of the recess of the lower midsole layer.

[0055] The opening formed by the lower midsole layer may substantially correspond to an underfoot portion of the midsole. In particular, the opening may substantially correspond to the size of the open space as viewed in a horizontal plane.

[0056] In a preferred embodiment of the sole for a shoe as described herein, the lower midsole layer has a cutout arranged so that the reinforcing frame is at least partially visible from below the lower midsole layer, the cutout preferably having an elongated shape aligned along the heel-to-toe axis of the sole.

[0057] This has the advantage that a condition of the reinforcement frame, such as its solidity, strength or the like, can be assessed by a person.

[0058] This may have the further advantage that the external appearance of the sole and / or shoe could be customized to indicate to the wearer that the visible reinforcement frame may be equipped with a specific functionality. This could therefore influence the wearer's performance adjustment accordingly. Furthermore, such visibility may influence the wearer's performance, confidence, and / or motivation when practicing a sporting activity.

[0059] The reinforcement frame, which is at least partially visible from below the lower midsole layer, can be understood such that during normal use of the sole, a person can recognize the reinforcement frame from below the lower midsole layer. It is well within the scope of the present disclosure that a portion of the reinforcement frame is not visible from below the lower midsole layer.

[0060] The cutout may be understood as a through-hole, an aperture, a recess, or the like. The cutout may be implemented by one or more of a groove, a slot, a cut, and / or a vent, or the like. For example, the cutout may form a space free of the material of the lower midsole layer.

[0061] The term "elongated" means that there may be a dimension along one axis of the cutout that may be larger than one, and preferably both, of the dimensions along the remaining axes, the remaining axes being substantially perpendicular to the one axis. It is understood that when dimensions are described herein, manufacturing tolerances must typically be taken into account. Thus, the dimensions described herein may vary slightly.

[0062] The elongated shape of the cutout, aligned along the heel-to-toe axis of the sole, may have the advantage that the strength and / or stability of the lower midsole layer can be substantially maintained and / or at least not significantly compromised while the reinforcing frame is visible from below the lower midsole layer.

[0063] It is fully contemplated within the present disclosure that the lower midsole layer may comprise one or more, and in particular a plurality of, cutouts. Nevertheless, not all cutouts necessarily have to be configured such that the reinforcement frame is at least partially visible from beneath the lower midsole layer.

[0064] In a preferred embodiment of the sole for a shoe as described herein, the cutout of the lower midsole layer is arranged such that a midfoot segment (as described in more detail elsewhere herein) of the reinforcing frame is at least partially visible from below the lower midsole layer. Open space

[0065] In a preferred embodiment of the sole for a shoe described herein, the midsole comprises a polymer foam material.

[0066] This has the advantage that the polymer foam material can provide the desired cushioning effect. This is particularly useful in combination with the open space through which the midsole, in particular the upper midsole layer, can at least partially protrude. Furthermore, since the open space is essentially free of the reinforcing frame, the midsole, in particular the upper midsole layer, cannot be hindered by structural components when deformed under a compressive load on the sole. This improves the cushioning effect.

[0067] In a preferred embodiment of the sole for a shoe described herein, the open space is arranged in at least one of the following: a heel region, a midfoot region and a toe region of the sole.

[0068] This further contributes to the cushioning benefits mentioned elsewhere herein while providing sufficient energy return. In particular, the open space according to this embodiment can encompass fairly large areas of the underfoot of the sole. In these fairly large areas, the reinforcing frame does not significantly obstruct, block, and / or significantly impede the midsole. Accordingly, the midsole can adequately provide the cushioning effect.

[0069] In a preferred embodiment of the sole for a shoe described herein, the open space spans at least 10%, preferably at least 20%, more preferably at least 30%, more preferably at least 40%, more preferably at least 50%, more preferably at least 60%, more preferably at least 70%, most preferably at least 80% of an underfoot region of the sole and / or at most 99%, preferably at most 95%, most preferably at most 90% of the underfoot region of the sole. The open space may be a three-dimensional space. As understood by those skilled in the art, the term "spanning" in this context may mean that a two-dimensional projection of the three-dimensional open space onto the two-dimensional underfoot region spans the specified percentages of the underfoot region.

[0070] This further contributes to the damping benefits mentioned elsewhere herein while providing adequate energy return.

[0071] The open space should not span an underfoot region of the sole to such an extent that the stability of the sole may be compromised. Therefore, an upper limit for the spanning should be provided. Nevertheless, the open space should span an underfoot region at least to such an extent that the benefits of the open space, e.g., to provide a fairly large area where deformation of the midsole is not blocked and / or not compromised by structural components such as the reinforcing frame, become apparent. Additionally, spanning an underfoot region of the sole to a greater extent may have the potential to reduce material consumption due to the open space.

[0072] It is therefore assumed, without wishing to be bound by theory, that an optimal balance between these conflicting requirements can be achieved according to the values ​​given herein. Arm of the reinforcement frame

[0073] In a preferred embodiment of the sole for a shoe as described herein, the reinforcing frame comprises an arm having a flattened profile in a cross-section perpendicular to a longitudinal axis of the arm. The flattened profile may have a substantially rectangular cross-section.

[0074] The flattened profile has the advantage of providing a reinforcement frame with minimal volume and / or minimal physical presence, while also providing the benefits of improved energy return. Additionally, the flattened profile reduces material consumption.

[0075] The arm can be understood as a structural element that essentially forms the reinforcing frame. The "arm" can additionally or alternatively be referred to as a leg or the like.

[0076] The longitudinal axis of the arm can easily be recognized as the axis that essentially follows the extension of the largest dimension of the arm.

[0077] In a preferred embodiment of the sole for a shoe as described herein, the flattened profile has a width approximately in a plane defined by a heel-to-toe axis and a medial-to-lateral axis of the sole of at least 3 mm, preferably at least 5 mm, more preferably at least 8 mm, even more preferably at least 10 mm, even more preferably at least 12 mm, further more preferably at least 15 mm, most preferably at least 20 mm, and / or of at most 70 mm, preferably at most 60 mm, more preferably at most 50 mm, even more preferably at most 45 mm, even more preferably at most 40 mm, even more preferably at most 35 mm, further more preferably at most 30 mm, most preferably at most 25 mm.

[0078] The width of the flattened profile, as specified in this embodiment, allows for an optimal balance between two different and opposing requirements. On the one hand, sufficient stiffening, improved reinforcement, and improved energy return are desired, for which a larger width would be advantageous. On the other hand, it should be ensured that there is essentially no interference with the midsole, enabling improved cushioning properties and improved assembly capabilities. For this purpose, a smaller width would be advantageous.

[0079] In a preferred embodiment of the sole for a shoe as described herein, the flattened profile has a thickness approximately perpendicular to a plane defined by a heel-to-toe axis and a medial-to-lateral axis of the sole of at least 0.2 mm, preferably at least 0.5 mm, more preferably at least 0.8 mm, even more preferably at least 1.0 mm, further more preferably at least 1.2 mm, most preferably at least 1.5 mm, and / or of at most 3 mm, preferably at most 2.5 mm, more preferably at most 2.0 mm, even more preferably at most 1.8 mm, most preferably at most 1.5 mm.

[0080] The thickness of the flattened profile should not be too great, as this may require more material and result in a bulky reinforcement frame construction. A smaller thickness can contribute to a more minimalist design of the reinforcement frame. This has the advantage that the reinforcement frame does not look and / or feel like a large foreign part or object. Rather, the reinforcement frame can be smoothly integrated into the sole, which is appreciated by the wearer. Furthermore, this can reduce material consumption, which has economic and environmental advantages. In addition, a reinforcement frame with a smaller thickness and / or width has the further advantage of reducing the weight of the sole, thereby reducing the overall weight of the shoe, which is particularly beneficial when the shoe is used for a sporting activity such as running.Therefore, an upper limit for the thickness of the flattened profile should be provided. Nevertheless, the thickness of the flattened profile should at least have a minimum value so that the benefits of the reinforcing frame, e.g., to provide sufficient energy return for a beam, become apparent. Thus, without wishing to be bound by theory, it is assumed that an optimal balance between these conflicting requirements can be achieved according to the values ​​specified herein.

[0081] In a preferred embodiment of the sole for a shoe as described herein, the reinforcing frame has a substantially uniform thickness.

[0082] As one skilled in the art will understand, even though the reinforcement frame has a substantially uniform thickness, it may still be possible for the reinforcement frame to have certain portions where the thickness is slightly different than in other portions. For example, manufacturing tolerances may need to be taken into account, which could lead to such differences. Further, the thickness may vary along the width direction of a portion of the reinforcement frame; for example, the thickness may be greater or lesser in the center compared to an outer side of the portion. In one example, a surface of the reinforcement frame may be textured, e.g., embossed, so that slight differences in thickness may occur. Such structures may assist in the integral bonding of the reinforcement frame. Further, structures may be provided that provide a visual design that is engraved thereby. First end, second end, three-dimensional shape

[0083] In a preferred embodiment of the sole for a shoe as described herein, the reinforcing frame is formed to define a three-dimensional shape such that it is arranged in at least two substantially parallel planes defined by the heel-to-toe axis and the medial-to-lateral axis of the sole, wherein the two planes are spaced apart from each other by at least 1 cm, preferably at least 1.5 cm, more preferably at least 2 cm, even more preferably at least 2.5 cm, even more preferably at least 3 cm, further more preferably at least 3.5 cm, most preferably at least 3.6 cm, and / or by at most 5 cm, preferably at most 4.5 cm, more preferably at most 4.2 cm, most preferably at most 4.0 cm.

[0084] Being spaced apart means that there may be a distance between the at least two planes, the distance being measured substantially perpendicular to the at least two planes. In one example, the distance may be recognizable by a person skilled in the art without any specific equipment.

[0085] The three-dimensional shape has the advantage that the reinforcement frame does not lie solely in a plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole. Rather, the reinforcement frame can be provided in planes and / or areas of the sole where such reinforcement is desired and / or where it is most effective. The three-dimensional shape can assist in the reconstruction of natural shapes, such as anatomical forms, which could help to position the reinforcement frame more precisely in dedicated positions. The three-dimensional shape can also facilitate the integral connection of the reinforcement frame in the sole. For example, the reinforcement frame can be more easily integrally connected between the upper midsole layer and the lower midsole layer. This provides synergistic effects of the three components of the sole, i.e.the upper midsole layer, the lower midsole layer and the reinforcement frame.

[0086] In the prior art, a multitude of separate reinforcement parts or elements are typically required to achieve this effect. The inventors have paved a way to overcome this problem according to the reinforcement framework proposed herein.

[0087] The at least two substantially parallel planes spaced apart from each other may be understood as being spaced apart along a vertical axis.

[0088] The reinforcing frame should not be arranged in two planes spaced apart to such an extent that the arrangement of the reinforcing frame in the sole is compromised. Therefore, the inventors have found that an upper limit should be provided. Nevertheless, the reinforcing frame should be arranged in two planes spaced apart at least to a minimum extent so that the advantages of the reinforcing frame, e.g., to provide sufficient energy return for a wearer, become apparent. Thus, without wishing to be bound by theory, it is believed that an optimal balance between these conflicting requirements can be struck according to the values ​​specified herein.

[0089] The plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole may also be referred to as the horizontal plane, e.g., horizontal with respect to a floor when a shoe encompassing the sole is standing on the ground.

[0090] In a preferred embodiment of the sole for a shoe as described herein, a heel segment of the reinforcing frame extends a greater amount in an upward direction than any other segment of the reinforcing frame.

[0091] This extension of the heel segment has the advantage of further contributing to improved energy return to the wearer during the gait cycle and particularly during the toe-off phase.

[0092] Furthermore, since the heel segment can surround the heel portion of the midsole at a higher level when viewed along the vertical axis, this can have the added benefit of stopping shear forces and / or vibrations. This can also meet the needs of an athlete who is a heel striker, i.e., an athlete who strikes the ground with the heel of the shoe first.

[0093] In a preferred embodiment of the sole for a shoe as described herein, the reinforcing frame comprises an open frame structure having a first end and a second end, the first end and the second end being spaced apart from each other.

[0094] The open frame structure has the advantage of providing a dynamic and active reinforcement frame. Due to the open frame structure, i.e., without a closed frame or closed connection of the reinforcement frame, the reinforcement frame allows the wearer's foot to be guided while still adapting to the wearer's foot in terms of torsional capability. This can be particularly the case since dynamic forces are transferred from a lateral side to a medial side of the wearer's foot. Such a transfer of dynamic forces can occur, for example, during the gait cycle or when the wearer turns or the like.

[0095] It is noted that an open structure can adapt to such dynamic forces to a greater extent than a closed structure, e.g., a plate or the like commonly used in the prior art. Such a plate, which may additionally be arranged only in a single plane parallel to a medial-to-lateral and heel-to-toe axis of the sole (rather than in a plurality of such planes spaced apart and parallel to each other), may additionally encompass a large underfoot area of ​​the sole and adversely affect the wearer. Without wishing to be bound by theory, it is believed that such a plate would comparatively reduce torsion and adaptability.The open frame structure of the reinforcement frame as proposed herein allows to give freedom to the torsional capability while at the same time allowing the beam to be propelled in a forward direction due to the energy return.

[0096] In a preferred embodiment of the sole for a shoe described herein, the first end and the second end are spaced apart from each other by at least 10% of the length of the sole, preferably at least 20% of the length of the sole, more preferably at least 30% of the length of the sole, even more preferably at least 40% of the length of the sole, most preferably at least 50% of the length of the sole, and / or by at most 80% of the length of the sole, preferably at most 70% of the length of the sole, more preferably at most 60% of the length of the sole, most preferably at most 50% of the length of the sole.

[0097] Spacing the first end and the second end apart allows for greater design freedom and facilitates more dynamic behavior of the reinforcement frame. In particular, the first end and the second end can be arranged at locations where such energy return may be most desired, or at least to a great extent. Nevertheless, the first end and the second end should not be spaced apart to such a great extent that the reinforcement frame itself may lose some of its desired stiffness. Thus, without wishing to be bound by theory, it is believed that an optimal balance between these conflicting requirements can be achieved according to the values ​​specified herein.

[0098] It is noted that the length of the sole can generally be measured along the heel-to-toe axis of the sole.

[0099] In a preferred embodiment of the sole for a shoe described herein, the first end is arranged in a toe area, preferably in a small toe area.

[0100] This further contributes to the benefits of the reinforced frame in providing improved energy return for the wearer. In particular, it can provide support for the toe area, which can be helpful during the toe-off phase of the gait cycle.

[0101] In a preferred embodiment of the sole for a shoe described herein, the second end is arranged in a midfoot region of the sole.

[0102] This has the advantage of providing more energy return to the midfoot area of ​​the sole and thus to the midfoot area of ​​the wearer's foot. This is especially important during the toe-off phase.

[0103] In a preferred embodiment of the sole for a shoe described herein, the reinforcing frame comprises the following segments in the following order from the first end to the second end: a substantially straight lateral segment, a curved heel segment, a substantially straight medial segment, a curved toe segment, and a substantially straight midfoot segment.

[0104] This has the advantage that greater rigidity and a greater reinforcement effect can be ensured in essentially all places where it is desired.

[0105] The midfoot segment can extend from a toe section to a mid-section of the midfoot section. The midfoot segment can have a longitudinal shape. The midfoot segment has the additional advantage of providing sufficient stiffness for the toe-out phase. This can be particularly beneficial for the end of the gait cycle during the toe-out phase. Furthermore, stiffening the midfoot-to-forefoot section results in improved energy return for the wearer.

[0106] In a preferred embodiment of the sole for a shoe described herein, a width of the midfoot segment, in particular the width of the second end, is greater than any other width of the reinforcing frame, wherein the width lies substantially in a plane defined by a heel-to-toe axis and a medial-to-lateral axis of the sole.

[0107] The midfoot generally requires more support and / or stabilization and is a key area where energy return to the wearer can significantly improve the athlete's performance. Therefore, this design has the advantage that a wider frame width, i.e., a wider frame base, can meet these needs and help support a wearer's midfoot.

[0108] In a preferred embodiment of the sole for a shoe described herein, a width of the reinforcing frame decreases from the second end along the midfoot segment toward the toe segment, the width lying substantially in a plane defined by a heel-to-toe axis and a medial-to-lateral axis of the sole.

[0109] This has the advantage of improving the bonding of the reinforcement frame, as described elsewhere herein. Additionally, it allows more foam material to be provided in the midfoot and / or forefoot of the sole as the width of the reinforcement frame decreases toward the toe segment. This can improve the cushioning properties for the wearer's foot. This can be particularly helpful in the forefoot of the sole.

[0110] In a preferred embodiment of the sole for a shoe described herein, the midfoot segment, in particular the second end, extends a greater amount in a downward direction than any other segment of the reinforcing frame.

[0111] This has the advantage that the midfoot of a wearer's foot can be supported and / or stabilized to a greater extent. Accordingly, this design further improves the sole, making it particularly useful for athletic activities. outsole

[0112] In a preferred embodiment of the sole for a shoe described herein, the sole comprises an outsole disposed beneath the lower midsole layer.

[0113] The outsole can be the lower section of the sole that comes into at least partial direct contact with the ground. This means that the entire outsole doesn't necessarily have to touch the ground, although it often can. The outsole can provide several benefits that contribute to the overall performance of the sole, including comfort, grip, durability, stability and support, and water and weather resistance. visibility

[0114] In a preferred embodiment of the sole for a shoe as described herein, the outsole has a cutout arranged so that the reinforcing frame is at least partially visible from below the outsole, the cutout preferably having an elongated shape aligned along the heel-to-toe axis of the sole.

[0115] This has the advantage that a condition of the reinforcement frame, such as its solidity, strength or the like, can be assessed by a person.

[0116] This may have the further advantage that the external appearance of the sole and / or shoe could be customized to indicate to the wearer that the visible reinforcement frame may be equipped with a specific functionality. This could therefore influence the wearer's performance adjustment accordingly. Furthermore, such visibility may influence the wearer's performance, confidence, and / or motivation when practicing a sporting activity.

[0117] The reinforcement frame being at least partially visible can be understood in such a way that during normal use of the sole, a person can recognize the reinforcement frame from below the outsole.

[0118] The outsole cutout may be substantially similar or the same as the lower midsole layer cutout, which is described in more detail elsewhere herein.

[0119] The term "elongated" as used in connection with the outsole cutout may be understood in a similar manner as it is used in connection with the lower midsole layer cutout, which is described in more detail elsewhere herein.

[0120] The elongated shape of the outsole cutout, aligned along the heel-to-toe axis of the sole, may have the advantage that the strength and / or stability of the outsole can be substantially maintained and / or at least not significantly compromised while the reinforcing frame is visible from below the outsole.

[0121] It is fully contemplated within the present disclosure that the outsole may comprise one or more, and in particular a plurality of, cutouts. Nevertheless, not all cutouts necessarily have to be configured such that the reinforcement frame is at least partially visible from beneath the outsole.

[0122] In a preferred embodiment of the sole for a shoe as described herein, the cutout is arranged so that the midfoot segment of the reinforcing frame is at least partially visible from below the outsole.

[0123] This further contributes to the advantages related to the cutout mentioned elsewhere herein. Visibility of the midfoot segment can be particularly important, as this segment can provide a large portion of the energy return. This can make it advantageous to easily assess the condition of the midfoot segment, such as solidity, strength, or the like.

[0124] It may be possible for the lower midsole layer to have a cutout arranged such that the reinforcement frame is at least partially visible from below the outsole. The cutout of the lower midsole layer preferably has an elongated shape aligned along the heel-to-toe axis of the sole. The cutout of the lower midsole layer may be arranged such that the midfoot segment of the reinforcement frame is at least partially visible from below the outsole. The cutout of the lower midsole layer may be shaped substantially in line with the cutout of the outsole. In one example, the cutout of the lower midsole layer and the cutout of the outsole may form an integral cutout.

[0125] The same features and advantages as mentioned in the previous embodiment relating to the outsole cutout also apply to the lower midsole layer cutout.

[0126] In a preferred embodiment of the sole for a shoe as described herein, the reinforcing frame is at least partially visible from outside the shoe, wherein the reinforcing frame is preferably visible from a medial side, a heel side and / or a lateral side.

[0127] Without wishing to be bound by theory, it is believed that this may provide an additional benefit of lateral stability and / or preventing ankle twisting. This may be the case because the visibility means the reinforcement frame may extend to or even slightly beyond an outermost boundary of the midsole, e.g., foam material. This provides the additional benefit.

[0128] Additionally, visibility from a medial, heel, and / or lateral side can have the further advantage of enhancing the outward appearance of the sole and / or shoe. In particular, it could easily indicate to the wearer that the sole is equipped with a specific functionality. This visibility can also influence the wearer's performance, confidence, and / or motivation when practicing a sporting activity.

[0129] In a preferred embodiment of the sole for a shoe described herein, the reinforcing frame extends from a heel region of the sole to a toe region of the sole.

[0130] This further contributes to the benefits of the reinforcement frame as set forth elsewhere herein, e.g., providing improved energy return for the wearer. In particular, according to this embodiment, the reinforcement frame is provided over a fairly large area of ​​the sole while still defining the open space as described elsewhere herein. In this way, shocks received during any phase of the wearer's gait cycle can be stored in the reinforcement frame in the form of energy, which is returned to the wearer to assist in providing a propulsive force in the direction of movement for the wearer. This can provide improved performance.

[0131] This embodiment can also be useful for athletes when they deviate from their optimal running form due to fatigue, which can occur, for example, while running at higher speeds and / or during a long endurance run. Due to the large area enclosed by the reinforcement frame, the wearer can benefit from the reinforcement frame during essentially any type of running form, whether at the beginning when the wearer is still relatively fresh, or towards the end when fatigue predominates. Materials

[0132] In a preferred embodiment of the sole for a shoe described herein, the upper midsole layer comprises a first material and the lower midsole layer comprises a second material, wherein the first material preferably has a lower stiffness than the second material.

[0133] This has the advantage that the upper midsole layer can provide improved cushioning for the wearer's foot. This may be because it can at least indirectly make contact with the wearer's foot. Furthermore, the lower midsole layer, which comprises a stiffer material, can provide improved distribution of forces to an outsole of the sole and / or to the ground.

[0134] It is noted that the first material, i.e. the material of the upper midsole layer, can be lighter than the second material while still providing a higher energy return to the wearer.

[0135] The term "stiffness" referred to herein can be understood as rigidity or elastic modulus. It can refer to the ability of a material to resist deformation when subjected to an applied force. It can describe how much a material bends or stretches in response to an applied load. A stiffer material may experience less deformation under the same load than a less stiff material. Stiffness is measured by elastic modulus, which quantifies the relationship between stress (force per unit area) and strain (deformation). Stiffness can often be related to a material's ability to maintain its shape and resist bending or flexing.

[0136] In a preferred embodiment of the sole for a shoe described herein, the reinforcement frame comprises or consists of one or more of the following materials: thermoplastic polyurethane, TPU and / or polyamide, in particular nylon polyamide, and / or carbon fibers and / or a carbon fiber composite material and / or a glass fiber composite material. The reinforcement frame may additionally or alternatively comprise foam, in particular a dense foam, such as an ethylene-vinyl acetate (EVA) foam.

[0137] These materials have the advantage of providing sufficient stiffness and can contribute to improved energy return. Additionally, these materials can be relatively simple to obtain, are inexpensive, and are widely accepted in the field of shoe soles.

[0138] Furthermore, one or more of the following more general exemplary groups of materials may be used for the reinforcement frame: biological polymers, fiber-reinforced polymers, reinforced polymer composites, biological fibers.

[0139] The reinforcement frame can be manufactured using a dual-injection process. Such a process involves injecting the same or different materials, for example, different materials with different properties, such as different hardnesses, into the same mold. This can have the advantage of providing a reinforcement frame with different material properties, such as different hardnesses in different areas of the reinforcement frame.

[0140] In a preferred embodiment of the sole for a shoe described herein, the midsole comprises or consists of a particle foam material, in particular a particle foam material comprising one or more of the following materials: expanded thermoplastic polyurethane (eTPU); expanded polyamide (ePA); expanded polyether block amide (ePEBA); expanded polylactide (ePLA); expanded polyethylene terephthalate (ePET); expanded polybutylene terephthalate (ePBT); expanded thermoplastic polyester ether elastomer (eTPEE).

[0141] The foam particles are preferably made of or comprise expanded thermoplastic materials, in particular thermoplastic polyurethane (TPU), polylactate (PLA), polyamide (PA), polyether block amide (PEBA), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or thermoplastic polyester ether elastomer (TPEE). The foam particles may also be a bead containing multiple polymer types within one foam particle, or the foam particles may be a mixture of different particles of different foam polymers or combinations thereof. Preferably, the foam particles consist of 90% by weight of one or a mixture of these materials. These foam particles are particles comprising a so-called bead foam, also known in the art as pellet / particle foam.Often, foams derived from the use of bonded foam particles are designated with the designation “e” to indicate the bead shape of the polymer foam component, for example eTPU.

[0142] Particle foams are particularly useful for providing cushioning and energy return, as such materials can exhibit good elastic and damping properties. Furthermore, depending on the desired level of cushioning, support, stability, and / or solidity, a softer or harder material can be used. This allows for fine-tuning of the midsole's response under a compressive load on the sole. It may also be possible for the midsole material to be subordinate to the material of the upper and / or outsole. This can provide an advantage in terms of the attachment of the respective parts.

[0143] Further advantages of the materials that can be used according to the present disclosure can be found in EP 2 649 896 A2, WO 2016 / 030 026 A1 and WO 2016 / 030 333 A1, the disclosure of which is incorporated herein by reference.

[0144] Expanded thermoplastic polyurethane (eTPU) foam can be a versatile material that offers several advantages due to its ability to provide comfort, cushioning, insulation, and its relative lightweight properties. Expanded thermoplastic polyurethane (eTPU) particles offer excellent elastic and cushioning properties. This allows external shocks, such as those that occur when the sole hits the ground, to be absorbed, resulting in a comfortable fit.

[0145] Expanded polyamide (ePA) foam is also a beneficial material for the midsole. Polyamide foam is lightweight while maintaining a high level of cushioning, energy return, and comfort.

[0146] In a preferred embodiment of the sole for a shoe described herein, the midsole comprises or consists of a foam material produced in a foaming step. Such foams are often referred to as "homogeneous foams," "block foams," or "integral foams."

[0147] These foams are produced in a single foaming step using blowing agents, and these foams have no discernible granular structure, meaning they have no identifiable particles within the finished foam and only a singular internal cellular structure, unlike bead foams which contain multiple beads, each containing an internal cellular structure, and with intersections between the individual expanded beads creating a granular structure.

[0148] Homogeneous foams or slabstock foams can be made from well-known state-of-the-art polymers such as ethylene vinyl acetate (EVA), thermoplastic polyester ether elastomer (TPEE), polyether block amide (PEBA), polyurethane (PU), etc.

[0149] In a preferred embodiment of the sole for a shoe described herein, the reinforcing frame comprises a second part that does not surround the outer boundary of the midsole.

[0150] In a preferred embodiment of the sole for a shoe described herein, the second part comprises the substantially straight midfoot segment of the reinforcing frame. shoe

[0151] In a further aspect of the present disclosure, the objects are achieved by a shoe, in particular a sports shoe, such as a running shoe, the shoe comprising: a sole according to one of the embodiments described herein; and a shoe upper attached to the sole.

[0152] It is understood that the technical properties shown or described for the sole, as well as the advantages and improvements over the state of the art, are equally applicable to the shoe, especially the sports shoe. The same applies vice versa.

[0153] The shoe upper can be attached to the sole using any suitable fastening means. As one skilled in the art will understand, attaching the upper of a shoe to the sole may involve various methods and techniques, depending on the type of shoe, the materials used, and / or the desired level of durability and robustness of the shoe upper. 4. Short description of the characters

[0154] The invention is described in more detail below with reference to the following figures: Fig. 1: shows a sole for a shoe, in particular for a sports shoe, according to an embodiment of the present disclosure in an exploded view. Fig. 2: shows a reinforcing frame for a sole for a shoe according to an embodiment of the present disclosure in a first perspective view. Fig. 2A: shows a reinforcing frame for a sole for a shoe according to an embodiment of the present disclosure in a second perspective view. Fig. 2B: shows a reinforcement frame for a sole for a shoe according to an embodiment of the present disclosure in a third perspective view. Fig. 2C: shows a reinforcement frame for a sole for a shoe according to an embodiment of the present disclosure in a fourth perspective view. Fig. 2D: shows a schematic cross-section of a reinforcing arm of a reinforcing frame as used in a sole for a shoe according to an embodiment of the present disclosure. Fig. 3: shows a shoe, in particular a sports shoe, comprising an upper according to an embodiment of the present disclosure in a first perspective view. Fig. 3A: shows a shoe, in particular a sports shoe, comprising an upper according to an embodiment of the present disclosure in a second perspective view. Fig. 3B: shows a shoe, in particular a sports shoe, comprising an upper according to an embodiment of the present disclosure in a third perspective view. Fig. 3C: shows a shoe, in particular a sports shoe, comprising an upper according to an embodiment of the present disclosure in a perspective view from below. Fig. 4: shows a schematic cross-sectional view (as shown by the cross section BB in Fig. 3B and Fig. 3C) of a midsole of a sole for a shoe according to an embodiment of the present disclosure. 5. Detailed description of the preferred embodiments

[0155] Only a few possible embodiments of the invention are described in detail below. However, the present invention is not limited to these, and a variety of other embodiments are applicable without departing from the scope of the invention. The illustrated embodiments can be modified and combined with each other in a variety of ways whenever compatible, and certain features can be omitted if they appear unnecessary. In particular, the disclosed embodiments can be modified by combining certain features of one embodiment with one or more features of another embodiment.

[0156] It should be understood that not all features of the described aspects / embodiments need to be present to realize the technical advantages provided by the present disclosure, which is defined by the subject matter of the claims. The disclosed aspects / embodiments may be modified by combining certain features of one aspect / embodiment with one or more features of another aspect / embodiment. In particular, those skilled in the art will understand that features and / or functional elements of one aspect / embodiment may be combined with technically compatible features and / or functional elements of any other aspect / embodiment of the present disclosure, provided that the resulting combination falls within the definition of the present disclosure.

[0157] While the following embodiments are described primarily with reference to a sole for a shoe, in particular for a sports shoe, those skilled in the art will recognize that the inventive disclosure can equally be applied to a variety of different technical fields and / or applications.

[0158] In the present figures and description, the same reference numerals refer to the same elements. For clarity and conciseness, certain aspects of components or steps of certain embodiments are presented without undue detail when such details would be obvious to one of ordinary skill in the art in light of the teachings herein and / or when such details would obscure an understanding of more relevant aspects of the embodiments.

[0159] As will be understood by those skilled in the art and / or to avoid redundancies, reference is also made to the explanations in the preceding sections, which also apply to the following detailed description. Furthermore, for the sake of brevity and clarity, not all features, parts, elements, aspects, components, and / or steps are expressly identified by reference numerals. This applies in particular if those skilled in the art recognize that such features, parts, elements, aspects, components, and / or steps exist in multiples. Definitions

[0160] The term "medial," "medial side," "medial side region," and / or "medial side portion" of a sole / midsole, as used herein, may refer to an inner and / or inner edge of the sole / midsole. This side and / or edge may be closest to a midline of the wearer's body when the shoe incorporating the sole is worn. This side and / or edge may extend from a big toe portion to a heel region. The term "medial side portion" may additionally include a small region extending from the medial side to a heel-toe midline of the sole. The "medial side" and / or "medial side portion" is typically positioned facing the arch of the foot and / or the big toe.

[0161] The term "lateral," "lateral side," "lateral side region," and / or "lateral side portion" of a sole / midsole, as used herein, may refer to an outer side and / or outer edge of the sole / midsole. This side and / or edge may be farther from a midline of the wearer's body when the shoe incorporating the sole is worn. This side and / or edge may extend from a small toe portion to a heel region. The term "lateral side portion" may additionally encompass a small region extending from the lateral side to a heel-toe midline of the sole.

[0162] The term "heel portion" and / or "heel area" of a sole / midsole, as used herein, may refer to the rear portion of the sole / midsole, e.g., the rear portion of the sole, which typically provides support and cushioning for the heel of the wearer's foot when worn. A front end of a wearer's foot may be received within the heel portion and / or heel area of ​​the sole. In particular, the "heel area" of a wearer's foot may be received. The heel area is a large bone that forms the heel of the foot.

[0163] The term "toe portion" and / or "toe area" of a sole / midsole, as used herein, may refer to the front part of the sole / midsole, e.g., the forefoot portion of the sole / midsole, in which toes of the wearer's foot may be received when worn. The toes of the wearer's foot may include the big toe and / or the big toe malleolus. It may include a front end of the foot when worn. Further, the toe portion and / or toe area may include distal phalanges, intermediate phalanges, and proximal phalanges of a wearer's foot when worn. The toe portion and / or toe area may additionally include a front portion of the metatarsal bones of a wearer's foot when worn.

[0164] The term "forefoot" of the sole, as used herein, may refer to the front portion of the outsole. The forefoot portion of the outsole shoe may cover an area of ​​the foot corresponding to the toes and a base of the toes. In one example, the forefoot may cover less than about half of the front of the underfoot portion or less than about one-third of the front of the underfoot.

[0165] The term "underfoot area" of the sole, as used herein, may be determined, for example, in a plane defined by a heel-to-toe axis and a medial-to-lateral axis of the sole. In other words, the underfoot area of ​​the sole may be measured substantially in a horizontal plane perpendicular to a vertical axis. The underfoot area of ​​the sole may be the area with which a wearer's foot would come into contact (disregarding the presence of an upper and / or insole) when wearing a shoe incorporating such a sole.

[0166] The term "upward direction" as used herein may be the direction from an underfoot portion of the upper to an upper portion of the upper. For example, the upward direction may be the direction from the underfoot portion of the upper to an instep portion of the upper. The upward direction may be substantially parallel to a vertical axis.

[0167] The term “downward direction” as used herein may be substantially opposite to the upward direction.

[0168] The term “vertical axis” as used herein may substantially correspond to the wearer’s main body axis from head to toe when the wearer is standing on the ground.

[0169] Unless otherwise specified, the term "substantially" or "substantially" as used herein may be understood to mean to a large or significant extent, or to a large or significant extent. In particular, minor tolerances, such as manufacturing tolerances and / or variations, are intended to be encompassed by this term. Therefore, any values ​​or arrangements described using this term may differ slightly from the values ​​or arrangements described.

[0170] The term "and / or" is merely an association relationship describing associated objects and represents that three relationships can exist. For example, A and / or B can represent three conditions: i.e., independent existence of A, existence of both A and B, and independent existence of B. Additionally, the character " / " in the disclosure typically represents that previous and next associated objects form an "or" relationship. As another example, if it is mentioned herein that at least a first part of the reinforcing frame substantially surrounds an outer boundary of the midsole in a lateral side region, a medial side region, a heel region, and / or a toe region of the midsole, this means that the lateral side region, the medial side region, the heel region, and the toe region are all respectively associated with the "and / or" association.Alternatively, this expression may mean that at least a first part of the reinforcing frame substantially surrounds an outer boundary of the midsole in one or more of: a lateral side region, a medial side region, a heel region and a toe region of the midsole.

[0171] The terms "bottom", "top", "one end", "the other end", "outer side", "upper", "over", "inner side", "below", "horizontal", "coaxial", "center", "end", "part", "length", "outer end", etc., which indicate the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings.

[0172] The terms "upper", "over", "below", "under", and the like, as used in the present invention to indicate a relative position in space, are used for the purpose of ease of explanation to describe a sole for a shoe, element, part, object, and / or feature shown in the drawings relative to the relationship of another sole for a shoe, element, part, object, and / or feature. Description of the characters

[0173] Fig. 1 shows a sole 101 for a shoe 100, in particular for a sports shoe 100, according to an embodiment of the present disclosure in an exploded view.

[0174] The sole 101 comprises: a midsole 110; and a reinforcing frame 130. At least a first part 136, 137, 138, 139 (as in the Fig. 2 to Fig. 2C) of the reinforcement frame 130 substantially surrounds an outer boundary 111 of the midsole 110 in one or more of: a lateral side region 116, a medial side region 115, a heel region 117 and a toe region 118 of the midsole 110, thereby defining an open space 112 (the underlining of the reference numeral 112 in Fig. 1 indicates that the open space includes at least the area / space enclosed by the reinforcement frame 130). The outer boundary 111 is with respect to Fig. 4 is specified and described in more detail.

[0175] In addition, as can be seen from the exploded view in Fig. 1, a part of the midsole 110 is received in the open space 112.

[0176] How best to Fig. 2 to Fig. 2C, the first part 136, 137, 138, 139 of the reinforcement frame 130, which substantially surrounds an outer boundary 111 of the midsole 110, may be one or more of the following: a substantially straight lateral segment 136, a curved heel segment 137, a substantially straight medial segment 138, and a curved toe segment 139. Accordingly, the reinforcement frame 130 may comprise a second part, such as a substantially straight midfoot segment 140. As shown in Fig. 1 and from the Fig. 2 to Fig. 2C, this second part may not surround an outer boundary 111 of the midsole 110 in one or more of: a lateral side region 116, a medial side region 115, a heel region 117 and a toe region 118 of the midsole 110.

[0177] As can be seen, a portion of the outer boundary 111 of the midsole 110, which is substantially surrounded by the reinforcing frame 130, faces a lateral side 102 of the sole 101 and / or a medial side 103 of the sole 101. Thus, the outer boundary 111 may have a normal (such as a normal to a surface) that is at least partially directed toward the lateral side 102 of the sole 101 and / or the medial side 103 of the sole 101. The normal of the outer boundary 111 is understood to be the line perpendicular to the surface formed by the outer boundary 111.

[0178] The open space 112 is substantially arranged in a plane defined by a heel-to-toe axis HT and a medial-to-lateral axis ML of the sole. As can be understood, the open space 112, since it may be three-dimensional, encloses more than the plane, but may at least extend through the plane, as in Fig. 1 can be seen.

[0179] The midsole 110 comprises an upper midsole layer 120 and a lower midsole layer 125, wherein the reinforcing frame 130 is enclosed between the upper midsole layer 120 and the lower midsole layer 125. From the exemplary embodiment shown in the exploded view in Fig. 1, it can be deduced that a part of the upper midsole layer 120 is accommodated in the open space 112. However, it is not excluded that further parts of the midsole 110, such as a part of the lower midsole layer 125, are accommodated in the open space 112.

[0180] As described elsewhere herein, it may alternatively be possible for the upper midsole layer 120 and the lower midsole layer 125 to be formed as a single unitary piece, such that they are not separate. In such an alternative, the reinforcing frame 130 may be at least partially housed within the midsole 110 by means of grooves, bars, cutouts, or the like formed in the midsole 110.

[0181] The upper midsole layer 120 and the lower midsole layer 125 are engaged with each other via a positive connection, thereby defining the outer boundary 111, which is substantially surrounded by the reinforcing frame 130. In particular, the upper midsole layer 120 may be at least partially received in an opening 126 formed through the lower midsole layer 125, which, following receiving, is substantially filled with the upper midsole layer 120 (as best shown in Fig. 4). As can be seen from the exploded view in Fig. 1, the reinforcing frame 130 is placed between the upper midsole layer 120 and the lower midsole layer 125, so that a peripheral surface 129 (also in Fig. 4) of the lower midsole layer 125 essentially rests against the reinforcing frame 130 and presses it against a peripheral surface 121 (also in Fig. 4) of the upper midsole layer 120. The peripheral surfaces 129, 121 of the lower midsole layer 125 and the upper midsole layer 120 are substantially facing each other, with the reinforcing frame 130 placed therebetween. This is also with respect to Fig. 3, Fig. 3A, Fig. 3B and Fig. 4 to see more details.

[0182] The midsole 110 may comprise a polymer foam material. In this way, the respective cushioning and energy return benefits of the physical arrangement of the reinforcement frame 130 and the midsole 110, particularly the upper midsole layer 120 and the lower midsole layer 125, become even more pronounced due to the good cushioning properties of the foam material.

[0183] As in Fig. 1, the open space 112 is arranged in at least one of the following: a heel region 112a, a midfoot region 112b and a toe region 112c of the sole 101.

[0184] The open space can span at least 10%, preferably at least 20%, more preferably at least 30%, more preferably at least 40%, more preferably at least 50%, more preferably at least 60%, more preferably at least 70%, most preferably at least 80% of an underfoot region 104 of the sole 101 and / or at most 99%, preferably at most 95%, most preferably at most 90% of the underfoot region 104 of the sole 101. The underfoot region 104 of the sole 101 is exemplified in Fig. 1. The underfoot region 104 may be defined by the heel region 112a, the midfoot region 112b, and the toe region 112c of the sole 101. In other words, the underfoot region 104 may be the region with which a wearer's foot would come into contact (disregarding the presence of an upper 160 and / or an insole) when a shoe 100 comprising such a sole 101 is worn by a wearer.

[0185] As further stated in Fig. 1, the reinforcing frame 130 extends from a heel region 112a of the sole 101 to a toe region 112c of the sole 101.

[0186] It's noted that the frame-like construction of the 130 Reinforcement Frame provides rigidity and stability in areas under the foot where it's most needed, while maintaining a minimalist design. This also allows for weight-saving benefits.

[0187] For example, the reinforcement frame 130, as described herein, can serve to increase the overall stability of the midsole 110 and can provide a significant increase in energy return to the wearer without significantly compromising the cushioning and elastic properties of other components of the midsole 110. Thus, the reinforcement frame 110 adds further possibilities for influencing the stability properties of the sole 101.

[0188] These benefits are particularly pronounced during many athletic activities. This may be the case because a variety of different movement patterns may be performed by an athlete, including, but not limited to, the wearer's foot contacting the ground via a posterior heel strike, a medial heel strike, a lateral heel strike, or a medial forefoot strike. These different impact patterns may result in different compressive loads on the sole 101 and on the wearer's foot. According to the sole 101 as proposed herein, these different compressive loads may be advantageously returned to the wearer while ensuring improved cushioning.

[0189] Fig. 2, Fig. 2A, Fig. 2B and Fig. 2C show a reinforcement frame 130 for a sole 101 for a shoe 100 according to an embodiment of the present disclosure in four different perspectives. Fig. Figure 2D shows a schematic cross section 131b (as in Fig. 2) of a reinforcing arm 131 of a reinforcing frame 130 as used in a sole 101 for a shoe 100 according to an embodiment of the present disclosure. The features shown in these figures are applicable to all other embodiments of the sole 101 for a shoe 100 described elsewhere herein. For the sake of brevity, not all features of the sole 101 are shown and / or described.

[0190] The reinforcement frame 130 comprises an arm 131 having a flattened profile 132 in a cross-section 131b perpendicular to a longitudinal axis 131a of the arm 131. The flattened profile 132 has a width w_fp (as best shown in Fig. 2D) substantially in a plane defined by a heel-to-toe axis HT and a medial-to-lateral axis ML of the sole 101, of at least 3 mm, preferably at least 5 mm, more preferably at least 8 mm, even more preferably at least 10 mm, even more preferably at least 12 mm, further more preferably at least 15 mm, most preferably at least 20 mm, and / or of at most 70 mm, preferably at most 60 mm, more preferably at most 50 mm, even more preferably at most 45 mm, even more preferably at most 40 mm, even more preferably at most 35 mm, further more preferably at most 30 mm, most preferably at most 25 mm.

[0191] Furthermore, the flattened profile 132 has a thickness t_fp substantially perpendicular to a plane defined by a heel-to-toe axis HT and a medial-to-lateral axis ML of the sole 101, of at least 0.2 mm, preferably at least 0.5 mm, more preferably at least 0.8 mm, even more preferably at least 1.0 mm, further more preferably at least 1.2 mm, most preferably at least 1.5 mm, and / or of at most 3 mm, preferably at most 2.5 mm, more preferably at most 2.0 mm, even more preferably at most 1.8 mm, most preferably at most 1.5 mm. The reinforcing frame 130 can have a substantially uniform thickness.

[0192] As is particularly evident from Fig. 2, Fig. 2A and Fig. 2B, the reinforcement frame 130 may be provided with structures, such as raised structures and / or embossed structures. These structures may have any shape and may serve the purpose of reinforcing some portions of the reinforcement frame 130. In one example, these structures may be provided in substantially regular patterns along the length of the arm 131. For example, Fig. 2A that such structures are provided at least along a lateral segment 136 (as described further below), along a heel segment 137 and / or along a medial segment 138 of the arm 131 of the reinforcement frame 130.

[0193] The reinforcement frame 130 is designed to define a three-dimensional shape such that it is arranged in at least two substantially parallel planes 142, 143 defined by the heel-to-toe axis HT and the medial-to-lateral axis ML of the sole 101, wherein the two planes 142, 143 are spaced apart from each other by at least 1 cm, preferably at least 1.5 cm, more preferably at least 2 cm, even more preferably at least 2.5 cm, even more preferably at least 3 cm, further more preferably at least 3.5 cm, most preferably at least 3.6 cm, and / or by at most 5 cm, preferably at most 4.5 cm, more preferably at most 4.2 cm, most preferably at most 4.0 cm (indicated by the term s). The two substantially parallel planes 142, 143 are in Fig. 2C are indicated by the dashed lines and are to be understood as projecting into infinite space in a horizontal direction.

[0194] How best in Fig. 2C, a heel segment 137 of the reinforcement frame 130 extends a greater amount in an upward direction UD than any other segment 136, 138, 139, 140 of the reinforcement frame 130.

[0195] As from Fig. 2, Fig. 2A, Fig. 2B and Fig. 2C, the reinforcing frame 130 comprises an open frame structure having a first end 135 and a second end 141, wherein the first end 135 and the second end 141 are spaced apart from each other. The first end 135 and the second end 141 can be spaced apart by at least 10%, preferably at least 20%, more preferably at least 30%, even more preferably at least 40%, most preferably at least 50% of the length of the sole 101 (as best shown in Fig. 1) and / or by at most 80%, preferably at most 70%, more preferably at most 60%, most preferably at most 50% of the length of the sole 101. It is understood that the length of the sole 101 can be measured along the heel-to-toe axis HT of the sole 101.

[0196] The first end 135 can be arranged in a toe region 112c of the sole 101, preferably in a small toe region of the sole 101. The second end 141 can be arranged in a midfoot region 112b of the sole 101.

[0197] The reinforcement frame 130 may include the following segments 136, 138, 139, 140 in the following order from the first end 135 to the second end 141: a substantially straight lateral segment 136, a curved heel segment 137, a substantially straight medial segment 138, a curved toe segment 139, and a substantially straight midfoot segment 140.

[0198] It is noted that the midfoot region 112b of the sole 101 and / or the toe region 112c of the sole portion 101 may be subjected to a range of movements and / or pressures during athletic activities. Therefore, improvements to these regions 112b, 112c contribute to a more comfortable and improved sole 101.

[0199] It is noted that although the reinforcement frame 130 comprises a midfoot segment 140, the reinforcement frame 130 may nevertheless define an open space 112 in the midfoot region 112b of the sole 101. This may be particularly Fig. 2B and Fig. 2C can be derived.

[0200] As is particularly evident from Fig. 2 and Fig. 2A, a width w_se of the metatarsal segment 140, in particular the width w_se of the second end 141, is greater than any other width (the width w_ts of the toe segment 139 and the width w_ls of the lateral segment 138 are shown by way of example in Fig. 2A) of the reinforcement frame 130, wherein the width w_se lies substantially along a plane defined by a heel-to-toe axis HT and a medial-to-lateral axis ML of the sole 101.

[0201] Furthermore, the width w_se of the reinforcing frame 130 decreases from the second end 141 along the midfoot segment 140 to the toe segment 139, wherein the width w_se lies substantially in a plane defined by a heel-to-toe axis and a medial-to-lateral axis of the sole.

[0202] For example, Fig. 2C, the metatarsal segment 140, in particular the second end 141, extends by a greater amount in a downward direction DD than any other segment 136, 138, 139, 140 of the reinforcing frame 130.

[0203] In one example, the three-dimensional shape can be understood such that the reinforcement frame 130 can be configured to define a helical shape. A helical shape can be a shape resembling a coil or helix. A coil is a curve that winds around a central axis. In one example, a coil can wind around a central axis in a consistent manner, creating a helical pattern. In another example, a distance to the central axis can vary, which may be a preferred shape to adapt to the shape of the midsole 110.

[0204] In one example, the reinforcement frame 130 may be formed as shown in Fig. 2, Fig. 2A, Fig. 2B and Fig. 2C, it can be understood to be constructed to form a loop weft that essentially begins under the wearer's little toe, wraps around the wearer's heel, runs under the wearer's big toe, and back under the wearer's midfoot. This has the advantage that the reinforcement frame 130 provides a rigid construction capable of storing a large charge of energy upon ground contact of the sole and providing a large energy return to the wearer to increase propulsive force in the running direction.

[0205] This construction facilitates the stiffening of the midfoot-to-forefoot section, resulting in improved energy return while also stabilizing the wearer's landing phase and supporting the wearer. This can be helpful when the wearer's gait cycle is less than ideal and / or varies depending on wearer fatigue.

[0206] As from Fig. 2, an exemplary dashed box 130a and an exemplary dashed box 130b are indicated, which may represent a first portion 130a of the reinforcement frame 130 and a second portion 130b of the reinforcement frame 130.

[0207] The first portion 130a of the reinforcing frame 130 may be covered and / or embedded in the midsole 110 when the sole 101 is in an assembled state (as seen from the exploded view in Fig. 1). It should be noted that this first portion 130a may differ from the second part of the reinforcement frame 130, such as the substantially straight midfoot segment 140 (which may not surround the outer perimeter 111 of the midsole 110). This means that the first portion 130a of the reinforcement frame 130 is considered to surround the outer perimeter 111 of the midsole 110, as further described elsewhere herein.

[0208] The second portion 130b of the reinforcing frame 130 may be exposed to the outside when the sole 101 is in an assembled state (as seen from the exploded view in Fig. 1 is derivable).

[0209] The size of the first portion 130a and / or the second portion 130b may vary, as will be understood by those skilled in the art. In particular, the first portion 130a and / or the second portion 130b may extend along one or more of: the substantially straight lateral segment 136, the curved heel segment 137, the substantially straight medial segment 138, and the curved toe segment 139. Furthermore, their width may also vary depending on the specific configuration of the sole 101, as will be understood by those skilled in the art. Thus, the size of the first portion 130a and / or the second portion 130b is merely exemplary in Fig. 2 is specified.

[0210] Fig. 3, Fig. 3A and Fig. 3B show a shoe 100, in particular a sports shoe 100, comprising an upper 160 according to an embodiment of the present disclosure in three different perspectives. The features shown in these figures are applicable to all other embodiments of the sole 101 for a shoe 100 described elsewhere herein. For the sake of brevity, not all features of the sole 101 are shown and / or described.

[0211] The sole 101 includes an outsole 150 disposed beneath the lower midsole layer 125. The outsole 150 has a cutout 151 (as best shown in Fig. 3B) arranged so that the reinforcement frame 130 is at least partially visible from below the outsole 150. The cutout 151 may have an elongated shape aligned along the heel-to-toe axis HT of the sole 101.

[0212] The cutout 151 is arranged such that the midfoot segment 140 of the reinforcement frame 130 is at least partially visible from below the outsole 150.

[0213] In addition, the lower midsole layer 125 has a cutout 127 arranged such that the reinforcement frame 130 is at least partially visible from below the outsole 150. This cutout 127 can have an elongated shape aligned along the heel-to-toe axis HT of the sole 101. The cutout 127 of the lower midsole layer 125 can be arranged such that the midfoot segment 140 of the reinforcement frame 130 is at least partially visible from below the outsole 101. The cutout 127 of the lower midsole layer 125 can be shaped substantially in correspondence with the cutout 151 of the outsole 150. Such cutouts 151, 127 have the advantage, on the one hand, that less material is required for production. On the other hand, they allow the wearer and / or personnel to assess the condition of the reinforcement frame 130.Additionally, the cutouts 151, 127 can enable breathability, e.g., they can allow air circulation and moisture wicking, which can reduce overheating and sweat accumulation. Additionally, the cutouts 151, 127 can have the further advantage of improving the longevity of the shoe due to a reduction in moisture. Furthermore, the cutouts 151, 127 can have the further advantage of reducing the weight of the midsole, thereby reducing the overall weight of the sole 101 and the shoe 100. A lightweight shoe 101 is particularly advantageous when used for a sporting activity such as running.

[0214] One or both of the cutouts 151, 127 may have a length in a longitudinal direction of the outsole 150 and / or the midsole 110, such as along the heel-to-toe axis HT, of at least 2 cm, preferably at least 4 cm, more preferably at least 6 cm, even more preferably at least 8 cm, further more preferably at least 10 cm, further more preferably at least 12 cm, further more preferably at least 15 cm, further more preferably at least 20 cm, further more preferably at least 25 cm, and most preferably at least 30 cm.

[0215] One or both of the cutouts 151, 127 may have a tapered shape along the heel-to-toe axis HT.

[0216] Furthermore, as can be seen from Fig. 3 and Fig. 3A, the reinforcement frame 130 is at least partially visible from outside the shoe 100. For example, the reinforcement frame 130 is preferably visible from a medial side 103, a heel side, and / or a lateral side 102 of the sole 101.

[0217] In addition, one or more recesses 128 may be provided in the lateral side region 116 of the midsole 110 and / or the medial side region 115 of the midsole 110 or, in other words, in the side walls of the midsole 110. In Fig. 3A, four recesses 128 are indicated. The one or more recesses 128 may have an elongated shape. The one or more recesses 128 are angled with respect to an upward direction UD and a downward direction DD, wherein the angle increases from a recess 128 arranged in a front portion to a recess 128 in a rear portion of the midsole 110. The increase in the angle may be substantially continuous. The one or more recesses 128 may be formed substantially continuously across the upper midsole layer 120 and the lower midsole layer 125, as shown in Fig. 3A. Furthermore, since the one or more recesses 128 provide space in the material of the midsole 110, the reinforcing frame 130 is visible to a greater extent in these recesses 128.

[0218] The one or more recesses 128 may have the advantage that the reinforcement frame 130 does not fully abut a lower peripheral surface 121 of the upper midsole layer 120 and / or an upper peripheral surface 129 of the lower midsole layer 125. This may allow for some variation and fine-tuning of the energy return to the wearer.

[0219] The one or more recesses 128 may not be through-holes. The one or more recesses 128 may have the shape of a slot, a groove, a cut, or a vent. These shapes may have the potential to impart certain functional properties to the midsole 110. For example, a pressure load distribution may be influenced to a greater extent. This may be appreciated by an athlete performing their sporting activity. Additionally, the shapes may be described as follows and may have the following advantages: A slit may be a fairly long, narrow opening and / or a cut in a material, such as a material of the midsole 110. A slit typically has a length greater than its width; in some cases, its length is significantly greater than its width. For example, its length may be greater than its width by a factor of at least two, at least three, at least four, at least five, at least six, at least seven, at least eight, at least nine, at least ten, or even more. Slits may be straight or curved, and they may be composed of one or more straight segments and one or more curved segments. Furthermore, the one or more recesses 128 shaped like slits, together with one or more remaining portions of the sole 101, may be configured to coincide and / or facilitate guided deformation of the sole 101.

[0220] A groove may be a long, narrow channel and / or recessed portion cut into a material, such as a material of the midsole 110. The grooves may serve various purposes, such as guiding the flow of liquids or the like. This may aid in the removal of moisture resulting from perspiration or the like. This, in turn, may also improve odor. The grooves may be shallow and / or deep. As one of ordinary skill in the art will understand, this may depend on the thickness of the midsole 110. The grooves may be wide or narrow. The grooves may appear in a variety of shapes, including one or more of straight segments, curved segments, corner segments, regular segments, or irregular segments.

[0221] A cut may refer to a separation or division made in a material, such as a material of the midsole 110. A cut may be provided by applying a sharp edge or a sharp tool into the material. Cuts may be straight or angled and may be used for a wide range of purposes, including creating openings, shaping materials, or changing the structure of an object, such as the midsole 110. The cuts may appear in a variety of shapes, including one or more of straight segments, curved segments, corner segments, regular segments, or irregular segments.

[0222] A vent is an opening or passage in a material, such as a material of the midsole 110. A vent can allow the movement of gases, such as air, or liquids therethrough. Vents can be useful in regulating a temperature of the wearer's foot. The vents can be implemented in many different shapes and / or sizes, including one or more of straight segments, curved segments, corner segments, regular segments, or irregular segments.

[0223] The shoe upper 160 may be attached to the sole 101 by any suitable fastening means. For example, the attachment may involve cementing / gluing, which is a common method in which, for example, a strong adhesive is applied to one or both of the shoe upper 160 and the sole 101. They may then be pressed together and allowed to bond. This method may be used for athletic shoes, casual shoes, or the like. Further, the attachment may involve sewing the shoe upper 160 to the sole 101. Such a method may involve sewing the shoe upper 160 and the sole 101 together. The sewing may be fully or at least partially visible, or fully or at least partially concealed within the sole 101. Further, the attachment may involve injection molding.Such a process may involve injecting molten material into a mold that forms both the sole 101 and the lower portion of the shoe upper 160 separately or together. Once the parts have substantially cooled and / or solidified, the shoe upper 160 and the sole 101 may be fused together. This may be performed for some types of athletic shoes. Further, the attachment may involve direct injection molding. In such a process, a material of the sole 101 may be injected directly around the shoe upper 160. This, in turn, may result in a seamless and strong bond between the shoe upper 160 and the sole 101. It may often be used in athletic and / or outdoor footwear.Further, the attachment may include applying sole panels comprising sole material (such as rubber and / or EVA) that are cut to shape and then attached to the sole 101 and the shoe upper 160 using adhesive and / or heat bonding. Further, the attachment may include Strobel stitching, which may often be performed in athletic shoes and / or casual shoes. In such a method, the shoe upper 160 is sewn to an insole 101 before being attached to the sole 101 using adhesive or cementing. Further, the attachment may include gathering, wherein gathers comprising metal and / or plastic are used to join the shoe upper 160 and the sole 101 together. Further, the attachment may include lasting. Such a lasting method may include pulling the shoe upper 160 over a last (i.e.The method may include forming a shoe-like mold (e.g., a shoe-shaped mold) and attaching it to the sole 101 by stapling, sewing, and / or cementing. Furthermore, the attachment may include vulcanization. Such a method may utilize rubber soles 101 that are cured to bond them to the shoe upper 160. It is often used in some types of athletic shoes. Furthermore, the shoe upper 160 may be attached to the sole 101 by means of fusion bonding, thermal bonding, ultrasonic bonding, or the like.

[0224] Fig. 3C shows a shoe 100, in particular a sports shoe 100, comprising an upper 160 according to an embodiment of the present disclosure in a perspective view from below. The features shown in these figures are applicable to all other embodiments of the sole 101 for a shoe 100 described elsewhere herein. For the sake of brevity, not all features of the sole 101 are shown and / or described. As can be seen, the lower midsole layer 125 has a cutout 127 arranged such that the reinforcing frame 130 is at least partially visible from below the outsole 150. This cutout 127 has, in comparison to Fig. 3B has a different shape. The cutout 127 extends from a heel region 117 of the lower midsole layer 125 to a midfoot portion of the lower midsole layer 125. The cutout 127 of the lower midsole layer 125 can be shaped substantially in accordance with the cutout 151 of the outsole 150. Similar advantages of the cutouts 151, 127 as with respect to Fig. 3B also apply to this embodiment. It may be possible that the configuration of the cutouts 127, 151 of the Fig. 3C compared to the embodiment shown in Fig. 3B illustrated embodiment is preferred.

[0225] Fig. Figure 4 shows a schematic cross-sectional view of a midsole sole 110 as used in a sole 101 for a shoe 100 according to an embodiment of the present disclosure. The schematic cross-sectional view of these figures is indicated by cross section BB in Fig. 3B and Fig. 3C. The features shown in this figure are applicable to all other embodiments of the sole 101 for a shoe 100 described elsewhere herein. For the sake of brevity, not all features of the sole 101 are shown and / or described.

[0226] As in Fig. 4, the outer boundary 111 of the midsole 110 may be a surface of the midsole 110 whose normal is substantially perpendicular to the upward direction UD and the downward direction DD.

[0227] Furthermore, the outer boundary 111 of the midsole 110 may at least partially define the outer shape of the midsole 110. The outer boundary 111 of the midsole 110 may be referred to as the portion that is visible when the midsole 110 is viewed from the outside, e.g., from a side of the sole 101, such as a medial side and / or a lateral side. As can be understood, since the reinforcement frame 130 substantially surrounds the outer boundary 111 of the midsole 110, the outer boundary 111 may not be fully visible from outside the shoe 100.

[0228] Additionally, Fig. 4 the open space 112 which is defined by the reinforcing frame 130 and which is free from the reinforcing frame 130. Since Fig. 4 is a cross-section in a midfoot region 112b of the sole 101, the midfoot region 112b enclosed by the open space 112 is also shown. A part of the midsole 110 is received in the open space 112. In the example of Fig. 4, it is indicated that a portion of the upper midsole layer 120 is received in the open space 112. In other words, the upper midsole layer 120 at least partially fills the open space 112 to engage the lower midsole layer 125.

[0229] As further stated Fig. 4, the reinforcement frame 130 has, in cross-section, a midfoot segment 140 that is spaced further in the downward direction DD than the medial segment 138 and / or lateral segment 136.

[0230] In one of the embodiments of the sole 101 for a shoe 100 described herein, the upper midsole layer 120 comprises a first material and the lower midsole layer 125 comprises a second material, wherein the first material preferably has a lower stiffness than the second material.

[0231] In one of the embodiments of the sole 101 for a shoe 100 described herein, the reinforcing frame 130 comprises or consists of one or more of the following materials: thermoplastic polyurethane, TPU, polyamide, in particular nylon polyamide, carbon fibers, a carbon fiber composite material, a glass fiber composite material.

[0232] In one of the embodiments of the sole 101 for a shoe 100 described herein, the midsole 110 comprises or consists of a particle foam material, in particular a particle foam material comprising one or more of the following materials: expanded thermoplastic polyurethane (eTPU); expanded polyamide (ePA); expanded polyether block amide (ePEBA); expanded polylactide (ePLA); expanded polyethylene terephthalate (ePET); expanded polybutylene terephthalate (ePBT); expanded thermoplastic polyester ether elastomer (eTPEE).

[0233] In one of the embodiments of the sole 101 for a shoe 100 described herein, the foam particles used for the midsole 110 can be made of or comprise expanded thermoplastic materials, in particular thermoplastic polyurethane (TPU), polylactate (PLA), polyamide (PA), polyether block amide (PEBA), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or thermoplastic polyester ether elastomer (TPEE). In one of the embodiments of the sole 101 for a shoe 100 described herein, the foam particles used for the midsole 110 can also be a bead containing multiple polymer types in one foam particle, or the foam particles can be a mixture of different particles of different foam polymers or combinations thereof. In one of the embodiments of the sole 101 for a shoe 100 described herein, the foam particles used for the midsole 110 consist of 90 wt.-% of one or a mixture of these materials. The particles are described in more detail elsewhere herein.

[0234] In one of the embodiments of the sole 101 for a shoe 100 described herein, the midsole 110 comprises or consists of a foam material produced in a foaming step. As described in more detail elsewhere herein, such foams are often referred to as "homogeneous foams," "block foams," or "integral foams."

[0235] As described in more detail elsewhere herein, these foams, which may be used as a material for the midsole 110 in any of the embodiments of the sole 101 for a shoe 100 described herein, are produced in a foaming step using blowing agents, and these foams have no discernible granular structure, i.e., they have no identifiable particles within the finished foam and only a singular internal cellular structure, in contrast to bead foams that contain multiple beads, each containing an internal cellular structure, and with intersections between the individual expanded beads creating a granular structure.

[0236] Homogeneous foams or slabstock foams can be made from well-known state-of-the-art polymers such as ethylene vinyl acetate (EVA), thermoplastic polyester ether elastomer (TPEE), polyether block amide (PEBA), polyurethane (PU), etc.

[0237] Particle foam material, or particle foam, on the other hand, is different from homogeneous foam. To produce particle foam, expanded particles (or beads) are created in a first step from a particulate base material that is foamed. These expanded beads can then be assembled in a second step to form a coherent structure in which the individual particle boundaries are recognizable, i.e., clearly visible, in the finished foam. Expanded, in this context, means that each individual particle has a core of foamed material with many small foam cells; i.e., the particle cannot consist of a compact, solid material.

[0238] It is noted that one or more of the embodiments and / or examples described herein may be combined with other aspects as described herein, and details of the embodiments and / or examples may also be omitted, as will be understood by those skilled in the art. The scope of protection is determined by the claims and is not limited by the embodiments and / or examples disclosed in the above figures. 6. List of reference symbols used 100 shoes, especially sports shoes 101 soles for a shoe 102 lateral side of the sole 103 medial side of the sole 104 Underfoot area of ​​the sole 110 midsole 111 outer boundary of the midsole 112 open space 112a Heel area of ​​the sole 112b Midfoot area of ​​the sole 112c Toe area of ​​the sole 115 medial side area of ​​the midsole 116 lateral side area of ​​the midsole 117 Heel area of ​​the midsole 118 Toe area of ​​the midsole 120 upper midsole layer 121 Circumferential surface of the upper midsole layer 125 lower midsole layer 126 Opening formed by the lower midsole layer 127 Cutout / aperture of the lower midsole layer 128 one or more recesses 129 Circumferential surface of the lower midsole layer 130 reinforcement frames 130a first section of the reinforcement frame 130b second section of the reinforcement frame 131 Arm of the reinforcement frame 131a Longitudinal axis of the arm 131b Cross section 132 flattened profile w_fp Width of the flattened profile t_fp Thickness of the flattened profile s distance between two different planes defined by the heel-to-toe axis and the medial-to-lateral axis of the sole 135 first end of the reinforcement frame 136 essentially straight lateral segment of the reinforcing frame 137 curved heel segment of the reinforcement frame 138 essentially straight medial segment of the reinforcing frame 139 curved toe segment of the reinforcement frame 140 essentially straight midfoot segment of the reinforcement frame 141 second end of the reinforcement frame 142 first plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole 143 second plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole w_se Width of the second end of the reinforcement frame w_ts Width of the toe segment of the reinforcement frame w_ls Width of the lateral segment of the reinforcement frame 150 outsole 151 Cutout / Aperture of the Outsole 160 shoe upper HT heel-to-toe axis (longitudinal direction) of the sole ML Medial-to-lateral axis of the sole UD direction upwards DD Direction downwards QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 3 868 242 A2

[0006] US 10 842 224 B2

[0007] EP 10 024 73 B1

[0008] KR 10 2 097 381 B1

[0009] US 7 263 788 B2

[0010] US 8 984 775 B2

[0011] US 2022 / 0 061 457 A1

[0011] EP 2 649 896 A2

[0143] WO 2016 / 030 026 A1

[0143] WO 2016 / 030 333 A1

[0143]

Claims

[1] Sole (101) for a shoe (100), in particular for a sports shoe, such as a running shoe, the sole (101) comprising: a midsole (110); and a reinforcing frame (130), wherein at least a first portion of the reinforcement frame (130) substantially surrounds an outer boundary (111) of the midsole (110) in one or more of: a lateral side region (116), a medial side region (115), a heel region (117), and a toe region (118) of the midsole (110), thereby defining an open space (112), a portion of the midsole (110) being received in the open space (112). [2] Sole (101) according to claim 1, wherein a part of the outer boundary (111) of the midsole (110), which is substantially surrounded by the reinforcing frame (130), faces a lateral side (102) of the sole (101) and / or a medial side (103) of the sole (101). [3] Sole (101) according to one of the preceding claims, wherein the open space (112) is arranged substantially in a plane defined by a heel-to-toe axis (HT) and a medial-to-lateral axis (ML) of the sole (101). [4] Sole (101) according to any one of the preceding claims, wherein the midsole (110) comprises an upper midsole layer (120) and a lower midsole layer (125), wherein the reinforcing frame (130) is enclosed between the upper midsole layer (120) and the lower midsole layer (125). [5] Sole (101) according to the preceding claim, wherein the upper midsole layer (120) and the lower midsole layer (125) are engaged with each other via a positive connection, thereby defining the outer boundary (111) of the upper midsole layer (120) which is substantially surrounded by the reinforcing frame (130). [6] Sole (101) according to one of the preceding claims 4 or 5, wherein the upper midsole layer (120) is at least partially received in an opening (126) formed by the lower midsole layer (125). [7] Sole (101) according to one of the preceding claims 4 to 6, wherein the lower midsole layer (125) has a cutout (127) arranged so that the reinforcing frame (130) is at least partially visible from below the lower midsole layer (125), the cutout (127) preferably having an elongated shape aligned along the heel-to-toe axis (HT) of the sole (101). [8] Sole (101) according to any one of the preceding claims, wherein the midsole (110) comprises a polymer foam material. [9] Sole (101) according to one of the preceding claims, wherein the open space (112) is arranged in at least one of: a heel region (117), a midfoot region (112b) and a toe region (118) of the sole (101). [10] Sole (101) according to one of the preceding claims, wherein the open space (112) spans at least 10%, preferably at least 20%, more preferably at least 30%, more preferably at least 40%, more preferably at least 50%, more preferably at least 60%, more preferably at least 70%, most preferably at least 80% of an underfoot region (104) of the sole (101), and / or at most 99%, preferably at most 95%, most preferably at most 90% of the underfoot region (104) of the sole (101). [11] Sole (101) according to one of the preceding claims, wherein the reinforcing frame (130) comprises an arm (131) having a flattened profile (132) in a cross-section (131b) perpendicular to a longitudinal axis (131a) of the arm (131). [12] Sole (101) according to the preceding claim, wherein the flattened profile (132) has a width substantially in a plane defined by a heel-to-toe axis (HT) and a medial-to-lateral axis (ML) of the sole (101) of at least 3 mm, preferably at least 5 mm, more preferably at least 8 mm, even more preferably at least 10 mm, even more preferably at least 12 mm, further more preferably at least 15 mm, most preferably at least 20 mm, and / or of at most 70 mm, preferably at most 60 mm, more preferably at most 50 mm, even more preferably at most 45 mm, even more preferably at most 40 mm, even more preferably at most 35 mm, further more preferably at most 30 mm, most preferably at most 25 mm. [13] Sole (101) according to claim 11 or 12, wherein the flattened profile (132) has a thickness substantially perpendicular to a plane defined by a heel-to-toe axis (HT) and a medial-to-lateral axis (ML) of the sole (101) of at least 0.2 mm, preferably at least 0.5 mm, more preferably at least 0.8 mm, even more preferably at least 1.0 mm, further more preferably at least 1.2 mm, most preferably at least 1.5 mm, and / or of at most 3 mm, preferably at most 2.5 mm, more preferably at most 2.0 mm, even more preferably at most 1.8 mm, most preferably at most 1.5 mm. [14] Sole (101) according to one of the preceding claims, wherein the reinforcing frame (130) has a substantially uniform thickness. [15] Sole (101) according to one of the preceding claims, wherein the reinforcing frame (130) is formed to define a three-dimensional shape such that it is arranged in at least two substantially parallel planes (142, 143) defined by the heel-to-toe axis (HT) and the medial-to-lateral axis (ML) of the sole (101), wherein the two planes (142, 143) are spaced apart from each other by at least 1 cm, preferably at least 1.5 cm, more preferably at least 2 cm, even more preferably at least 2.5 cm, even more preferably at least 3 cm, further more preferably at least 3.5 cm, most preferably at least 3.6 cm, and / or by at most 5 cm, preferably at most 4.5 cm, more preferably at most 4.2 cm, most preferably at most 4.0 cm. [16] Sole (101) according to any one of the preceding claims, wherein a heel segment (137) of the reinforcing frame (130) extends by a greater amount in an upward direction (UD) than any other segment of the reinforcing frame (130). [17] Sole (101) according to one of the preceding claims, wherein the reinforcing frame (130) comprises an open frame structure having a first end (135) and a second end (141), the first end (135) and the second end (141) being spaced apart from each other. [18] Sole (101) according to claim 17, wherein the first end (135) and the second end (141) are spaced apart by at least 10% of the length of the sole (101), preferably at least 20%, more preferably at least 30%, even more preferably at least 40%, most preferably at least 50% of the length of the sole (101), and / or by at most 80%, preferably at most 70%, more preferably at most 60%, most preferably at most 50% of the length of the sole (101). [19] Sole (101) according to claim 17 or 18, wherein the first end (135) is arranged in a toe region (118) of the sole (101), preferably in a small toe region of the sole (101). [20] Sole (101) according to one of claims 17 to 19, wherein the second end (141) is arranged in a midfoot region (112b) of the sole (101). [21] Sole (101) according to one of claims 17 to 20, wherein the reinforcing frame (130) comprises the following segments (136, 138, 139, 140) in the following order from the first end (135) to the second end (141): a substantially straight lateral segment (136), a curved heel segment (137), a substantially straight medial segment (138), a curved toe segment (139) and a substantially straight metatarsal segment (140), wherein the first part of the reinforcing frame preferably comprises one or more of the substantially straight lateral segment (136), the curved heel segment (137), the substantially straight medial segment (138) and the curved toe segment (139). [22] Sole (101) according to claim 21, wherein a width of the midfoot segment (140), in particular the width (w_se) of the second end (141), is greater than any other width (w_ts, w_ls) of the reinforcing frame (130), wherein the width (w_se, w_ts, w_ls) lies substantially in a plane defined by a heel-to-toe axis (HT) and a medial-to-lateral axis (ML) of the sole (101). [23] Sole (101) according to claim 21 or 22, wherein a width (w_se, w_ts, w_ls) of the reinforcing frame (130) decreases from the second end (141) along the midfoot segment (140) towards the toe segment (139), the width lying substantially in a plane defined by a heel-to-toe axis (HT) and a medial-to-lateral axis (ML) of the sole (101). [24] Sole (101) according to one of claims 21 to 23, wherein the midfoot segment (140), in particular the second end (141), extends by a greater amount in a downward direction (DD) than any other segment (136, 138, 139, 140) of the reinforcing frame (130). [25] Sole (101) according to any one of the preceding claims 1 to 3 and 5 to 24 and additionally claim 4, wherein the sole (101) comprises an outsole (150) arranged below the lower midsole layer (125). [26] Sole (101) according to claim 25, wherein the outsole (150) has a cutout (151) arranged so that the reinforcing frame (130) is at least partially visible from below the outsole (150), the cutout (151) preferably having an elongated shape aligned along the heel-to-toe axis (HT) of the sole (101). [27] Sole (101) according to claim 21 or claim 26, wherein the cutout (151) is arranged such that the midfoot segment (140) of the reinforcing frame (130) is at least partially visible from below the outsole (150). [28] Sole (101) according to one of the preceding claims, wherein the reinforcing frame (130) is at least partially visible from outside the shoe (100). [29] Sole (101) according to the preceding claim, wherein the reinforcing frame (130) is preferably visible from a medial side (103), a heel side and / or a lateral side (102). [30] Sole (101) according to any one of the preceding claims 1 to 3 and 5 to 29 and additionally claim 4, wherein the upper midsole layer (120) comprises a first material and the lower midsole layer (125) comprises a second material, wherein the first material preferably has a lower stiffness than the second material. [31] Sole (101) according to one of the preceding claims, wherein the reinforcing frame (130) comprises or consists of one or more of the following materials: thermoplastic polyurethane, TPU, polyamide, in particular nylon polyamide, carbon fibers, a carbon fiber composite material, a glass fiber composite material, ethylene vinyl acetate, EVA. [32] Sole (101) according to one of the preceding claims, wherein the midsole (110) comprises or consists of a particle foam material, in particular a particle foam material comprising one or more of the following materials: expanded thermoplastic polyurethane, eTPU; expanded polyamide, ePA; expanded polyether block amide, ePEBA; expanded polylactide, ePLA; expanded polyethylene terephthalate, ePET; expanded polybutylene terephthalate, ePBT; expanded thermoplastic polyester ether elastomer, eTPEE. [33] Sole (101) according to one of the preceding claims, wherein the midsole (110) comprises or consists of a homogeneous foam material. [34] Sole (101) according to one of the preceding claims, wherein the reinforcing frame (130) comprises a second part which does not surround the outer boundary (111) of the midsole (110). [35] Sole (101) according to the preceding claim and additionally claim 21, wherein the second part comprises the substantially straight midfoot segment (140) of the reinforcing frame (130). [36] Shoe (100), in particular a sports shoe, such as a running shoe, the shoe (100) comprising: a sole (101) according to any one of claims 1 to 35; and a shoe upper (160) attached to the sole (101).

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