Sole with reinforcing 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, the sole (101) comprising: a midsole (110); and a reinforcing frame (130). Wherein at least a first portion of the reinforcing frame (130) substantially surrounds an outer boundary (111) of the midsole (110) in one or more of: a lateral foot region (115), a medial foot region (116), a heel region (117), and a toe region (118) of the midsole (110), thereby defining an open space (112) in which a portion of the midsole (110) is received.

Description

Technical Field

[0001] The present disclosure relates to a sole for a shoe, in particular 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. Background Art

[0002] Soles for shoes, in particular for sports shoes such as running shoes, are generally known and have a variety of purposes and uses.

[0003] The sole generally has many different functions, such as reducing or cushioning the impact forces generated when the foot strikes, and providing traction to prevent the wearer's foot from slipping. In addition, the sole generally has the function of providing a degree of stability to the wearer's foot, thereby reducing the risk of twisting the ankle or other types of injuries, such as plantar fascia damage or muscle overload, etc. Another function of the sole (especially for performance shoes such as running shoes) is to facilitate good transfer of forces from the athlete's legs through their feet to the ground, and to facilitate efficient running form, so as to improve the athlete's athletic performance.

[0004] In this context, some of the many particularly relevant needs are to provide a sole for a shoe that enables safer running, supports the wearer during longer distances, has a high degree of cushioning, provides high energy return to the wearer, and is lightweight.

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

[0006] Prior art document EP3868242A2 relates to a sole for a shoe, in particular a running shoe, comprising at least two reinforcing members extending in the front half of the sole, wherein at least the first reinforcing member extends further rearward beyond the midfoot area of ​​the sole and into the heel area, and wraps upward to the rear of the ankle area.

[0007] Prior art document US10842224B2 relates to a plate for an article of footwear, the plate having a sole structure, the sole structure comprising a forward-most point disposed in a forefoot region of the sole structure, a rearward-most point disposed closer to a heel region of the sole structure than the forward-most point, and a concave portion extending between the forward-most point and the rearward-most point. The concave portion comprises a constant radius of curvature from the forward-most point of the sole structure to a metatarsophalangeal (MTP) point. During use, the MTP point is opposite to the MTP joint of the foot.

[0008] Prior art document EP1002473B1 relates to a device for increasing the sports stability of a tennis shoe or a shoe for similar sports, the device comprising a plate-like support which is substantially Y-shaped and has a first arcuate portion adapted to follow the contour of the heel area and a second portion adapted to follow the outer contour of the foot. The second portion is laterally widened with a third portion in order to affect the medial metatarsal region of the foot. The support is coupled in a downward region to a midsole made of a shock-absorbing material in order to distribute thereon the loads transmitted by the moving foot.

[0009] Prior art document KR102097381B1 relates to a sole with shock absorption and walking propulsion functions and a shoe including the sole. The document discloses: a first midsole that supports the rear foot portion of the foot relative to the arch portion; a second midsole that supports the forefoot portion of the foot relative to the arch portion; and a shock absorption and walking propulsion plate, which includes a first support portion installed on the upper surface of the first midsole, a second support portion installed on a predetermined portion of the lower surface of the second midsole, and a third support portion installed between the first midsole and the second midsole. The shock absorption and walking propulsion plate is characterized in that when a load is applied to the rear foot portion, the first support portion is elastically bent and deformed so that the first midsole can absorb shock, and when a load is applied to the forefoot portion, the propulsion force is transmitted to the front of the second support portion through the elasticity in the second support portion after the bending and deformation, so that the second midsole can have rebound resilience.

[0010] Prior art document US7263788B2 relates to an article of footwear having a stabilizing element incorporated into a sole structure. The stabilizing element is primarily located in the midfoot region of the shoe, but extends to the forefoot and heel regions. In one embodiment, the stabilizing element comprises five stabilizing members extending from a connecting member. The function of the stabilizing members is to provide support along the longitudinal length of the foot so as to limit non-axial vertical bending in the midfoot and heel regions; to allow the forefoot to flex axially relative to the heel; and to allow forefoot flexion.

[0011] Other prior art is disclosed in, inter alia, US8984775B2 and US2022 / 0061457A1.

[0012] The proposed solutions still have some drawbacks when it comes to providing the above requirements. For example, most known solutions provide a reinforcing element placed under the wearer's foot and heel. Although this can provide rigidity to the sole, and thereby carry the potential to provide a degree of energy return, it feels rather hard under the wearer's foot. This is particularly detrimental when performing physical activities. Therefore, there is still room for improvement.

[0013] Against this background, it is an object of the present invention to provide an improved sole which at least partially overcomes the deficiencies of the prior art. In particular, one object is to provide a sole which enhances performance properties, such as energy return to the wearer, without compromising other properties, such as providing adequate cushioning. An overall object is to reduce the cost of providing such a sole and to provide a sole which is lightweight. Summary of the invention

[0014] The above purpose is achieved through the embodiments of the present application. Other suitable aspects of the present invention are described through the overall disclosure of the present application. Note that the titles in this disclosure are provided only for the purpose of helping to keep an overview during reading. The titles do not mean that the features of the various embodiments cannot be combined.

[0015] Soles for shoes

[0016] In one aspect, the object is solved by a sole for a shoe, in particular for a sports shoe such as a running shoe, comprising: a midsole; and a reinforcement frame, wherein at least a first portion of the reinforcement frame substantially surrounds the outer boundary of the midsole in one or more of the following areas: a lateral area, a medial area, a heel area and a toe area of ​​the midsole, thereby defining an open space, wherein a portion of the midsole is received in the open space.

[0017] In this way, a sole for a shoe, in particular a sports shoe, provides the wearer with improved stability, comfort and energy return. In short, an enhanced performance can be provided thereby. This makes the sole particularly useful for sports activities. Therefore, when used for running shoes, in particular for long-distance running shoes, the sole can provide a significant improvement. However, people who wear such shoes in occasions other than running can also benefit from these advantages. The sole according to the present disclosure has the further advantage that it is quite light, it enables safer running, and the midsole, in particular when provided with a foam as described elsewhere herein, can provide a beneficial cushioning effect.

[0018] In most prior art solutions, a rather rigid reinforcing element is provided which covers a large bottom portion of the midsole, such as the underfoot portion of the midsole or also referred to as the footbed of the midsole. Without wishing to be bound by theory, it is believed that this may be detrimental because a rather stiff feeling is provided to the wearer underfoot. Furthermore, this may adversely affect the cushioning under the wearer's foot. According to the sole proposed herein, these disadvantages of the prior art can be overcome while still providing sufficient stability to the wearer.

[0019] Since the reinforcement frame has the shape of a frame and it surrounds the outer boundary of the midsole, another advantage is that the reinforcement frame is set at a specific position where it is most needed, while the reinforcement frame is omitted at a position that is not conducive to the desired cushioning effect. It should be understood that since the reinforcement frame surrounds the outer boundary of the midsole in one or more of the lateral area of ​​the foot, the medial area of ​​the foot, the heel area and the toe area of ​​the midsole, the main underfoot area of ​​the foot can remain open and an open space can be defined. As a result, the cushioning effect of the midsole can be enhanced because the cushioning effect is not particularly weakened by the interference of the reinforcement frame in the position where cushioning is desired. For example, in the area of ​​the foot where cushioning is desired (for example, in the underfoot portion), the reinforcement frame may not substantially obstruct the midsole, may not block the midsole, and / or may not interfere with the midsole.

[0020] In this way, the sole according to the present disclosure can direct the wearer's impact forces without adversely affecting underfoot cushioning. In particular, when considering an athlete's typical gait cycle during running, as the athlete moves toward the big toe and enters a push-off state, such as toe-off, the sole begins to function during the loading phase and allows for dynamic stiffening of the midsole (attributable to the reinforcing frame).

[0021] The term "midsole" as used in this disclosure may refer to a layer of material that may be located between the outsole of a shoe (e.g., the bottom of the sole that contacts the ground) and the upper of a shoe (e.g., the portion of the shoe that covers the top of the wearer's foot).

[0022] The term "reinforcement frame" as used in the present disclosure may be referred to as a structural element that can provide a reinforcement function. The structural element has the shape of a frame. Although possible, the reinforcement frame may not necessarily form a closed loop or closed frame. For example, the reinforcement frame may have two different ends. For example, the frame may be considered to be a paper clip or the like, which is an open frame. The reinforcement frame may be understood so that it frames (e.g. surrounds) something.

[0023] The "outer boundary" of the midsole as used in the present disclosure can be referred to as a boundary, which faces the outside of the midsole. For example, the outer boundary of the midsole can be the outermost part of the midsole. As an illustrative example, the inner boundary will be a boundary pointing to the central part of the midsole. Therefore, the inner boundary can be considered to be relative to the outer boundary. The outer boundary of the midsole can be one or more of the surface, edge, line, perimeter, etc. of the midsole. As can be derived from the term "boundary", the "outer boundary" can indicate a limit, etc. For example, the outer boundary can be free to the environment, etc. The outer boundary of the midsole can provide a recognizable dividing line between the midsole and other parts of the shoe and / or between the midsole and the environment. Therefore, in the direction toward the outside, beyond the outer boundary of the midsole, the midsole may not exist. However, it can also be the case that the midsole is formed so that some parts of the midsole protrude to a greater extent to the outside than the "outer boundary" of the midsole. Although these parts can also be referred to as having an outer boundary of the midsole, the "outer boundary" of the midsole that protrudes less to the outside can still be considered as the outer boundary of the midsole.

[0024] It should be noted that although at least the first portion of the reinforcement frame is substantially around the outer boundary of the midsole in one or more of the lateral area of ​​the foot, the medial area of ​​the foot, the heel area and the toe area, this does not mean that the entire reinforcement frame must be around the outer boundary of the midsole, which may or may not be the case. The present invention covers a second portion of the reinforcement frame, which is different from the first portion and does not surround the outer boundary of the midsole. For example, the reinforcement frame may include a second portion, such as a substantially straight midfoot segment described elsewhere herein, which may not surround the outer boundary of the midsole in one or more of the lateral area of ​​the foot, the medial area of ​​the foot, the heel area and / or the toe area of ​​the midsole. Of course, it is covered in the present disclosure that the reinforcement frame includes another portion, which may or may not surround the outer boundary of the midsole. In addition, the first portion of the reinforcement frame, the second portion of the reinforcement frame and / or any other portion of the reinforcement frame can be integrally formed as a single piece. Alternatively, they can be formed as separate parts and can be connected to each other.

[0025] As described elsewhere herein, the first portion of the reinforcing frame that substantially surrounds the outer boundary of the midsole in one or more of the lateral foot region, medial foot region, heel region, and / or toe region of the midsole can be, for example, one or more of: a substantially straight lateral foot segment, a curved heel segment, a substantially straight medial foot segment, and a curved toe segment.

[0026] As will be appreciated by those skilled in the art, since at least the first portion of the reinforcement frame substantially "surrounds the outer boundary of the midsole," the outer boundary of the midsole may not be fully exposed to the environment because it may be at least partially covered by the reinforcement frame. Furthermore, due to the reinforcement frame, the outer boundary of the midsole may not be fully visible from the outside. In one example, the term "surrounds" means to enclose something on all sides. In one example, the term "surrounds" means to extend around an edge or margin of something.

[0027] The reinforcement frame is substantially around the outer boundary of the midsole in one or more of the "lateral area of ​​the midsole, the medial area of ​​the midsole, the heel area and the toe area", which can be understood as making these areas substantially wrapped, surrounded, etc. by the reinforcement frame. In other words, the reinforcement frame can be substantially arranged around these areas of the midsole, which will be described in more detail elsewhere in this article. As the term "surrounding" implies, it may not be enough for the reinforcement frame to form a flat shape in one plane, and the plane is, for example, only located on a horizontal plane on the flat plane of the midsole (e.g., the flat heel area of ​​the midsole). In this case, the flat heel area of ​​the midsole may not be considered to be surrounded by the reinforcement frame. However, the term "surrounding" does not exclude any "sandwich"-type arrangement as described herein. The term "substantially" around the outer boundary can refer to that the reinforcement frame surrounds the outer boundary of the midsole to the following extent: at least 60% of the outer boundary, preferably at least 70%, more preferably at least 80%, and most preferably at least 90%.

[0028] The term "open space" as used in the present disclosure may be referred to as a three-dimensional volume. Furthermore, a portion of the midsole is received 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, etc. However, as will be appreciated by those skilled in the art, the open space may not be filled with a reinforcing frame. Otherwise, the reinforcing frame would not be able to define the open space. As will be appreciated by those skilled in the art, the open space may be a macroscopic space, i.e., a space that can be easily identified as such by those skilled in the art.

[0029] The "lateral area" and / or "medial area" of the midsole may refer to the side and / or edge of the midsole extending from the heel area to at least the metatarsal area. For example, the "lateral area" and / or "medial area" of the midsole may extend from the heel area to the little toe portion.

[0030] The soles for shoes described herein may be used in particular in conjunction with and / or when applied to athletic shoes, such as running shoes, particularly long-distance running shoes, etc. However, it should be noted that the soles may be used with any kind of footwear, including but not limited to: American football shoes, hiking boots, athletic shoes, basketball shoes, rugby shoes, baseball shoes, golf shoes, tennis shoes, cross-training shoes. Furthermore, the soles may be used in conjunction with shoes used for any type of athletic activity.

[0031] The term "physical activity" should be understood to include at least one or more and / or any combination of the following non-exhaustive list: aerobics, athletic training, running, hiking, climbing, group fitness classes, walking, cycling, yoga, soccer, tennis, American football, basketball, exercise, volleyball, gymnastics, weightlifting, cross-training, baseball, softball, rugby, hockey, wrestling, squash, track and field (e.g., sprinting, long jump, high jump), cross-country skiing.

[0032] Furthermore, the reinforcement frames providing the additional benefits described herein may be used in addition or alternatively for clothing and / or equipment used in sports activities. That is, the reinforcement frames need not be limited to the example of being used in the soles of shoes. It is feasible to transfer the concept of the reinforcement frames to any type of following activities or sports activities, wherein the said activities or sports activities require stability, comfort or generally any support for the wearer.

[0033] However, it has been found that the advantages of the reinforced frame described herein are particularly pronounced when applied to the sole of a shoe, such as a shoe used during sports activities.

[0034] The "wearer" referred to herein may be any type of person capable of wearing an article of footwear. The term "wearer" may be used synonymously with the terms "user," "athlete," "human being," and the like.

[0035] around

[0036] In a preferred embodiment of a sole for a shoe as described herein, a portion of the outer border of the midsole substantially surrounded by the reinforcement frame faces the lateral side of the sole and / or the medial side of the sole.

[0037] This may be understood in such a way that the reinforcement frame surrounds an outer boundary which may be facing to one side, for example in a horizontal direction opposite to a vertical direction.

[0038] This has the advantage that the mechanical support and / or stability of the midsole can be improved, since the reinforcement frame can act as a shield, supporting the midsole substantially from the outside to the inside. Due to the presence of the reinforcement frame on the outside, the arrangement can also be considered self-supporting.

[0039] In a preferred embodiment of a 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.

[0040] This has the advantage that the open space is substantially arranged in a horizontal plane, where cushioning of the wearer is more important than in a plane arranged along a vertical axis. In particular, since the open space is substantially free of a reinforcing frame, the open space may not interfere with the midsole in that horizontal plane where the wearer's foot needs to be cushioned.

[0041] Midsole sandwich structure and shape matching

[0042] 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 reinforcement frame is sandwiched between the upper midsole layer and the lower midsole layer.

[0043] This has the advantage that different materials can be provided in the upper mid-bottom layer and the lower mid-bottom layer. For example, the stiffness of the material of the upper mid-bottom layer can be different from the material of the lower mid-bottom layer. This has the additional benefit of providing specific functions to these layers.

[0044] In addition, sandwiching the reinforcement frame between the upper middle layer and the lower middle layer can provide additional support for the reinforcement frame between the upper middle layer and the lower middle layer. For example, gravity can basically maintain the reinforcement frame in its position so that it does not change its position substantially under the pressure load.

[0045] As will be appreciated by those skilled in the art, the upper mid-bottom layer can be arranged in an upward direction relative to the reinforcement frame (e.g., along a vertical axis from the ground to the sky as seen during normal use of the shoe). Additionally, the lower mid-bottom layer can be arranged in a downward direction relative to the reinforcement frame (e.g., along a vertical axis from the sky to the ground as seen during normal use of the shoe).

[0046] According to the present disclosure, alternatively, it is possible that the upper mid-bottom layer and the lower mid-bottom layer are formed as one integral piece. In such an alternative, the upper mid-bottom layer and the lower mid-bottom layer may not be separate, but may form one midsole.

[0047] In a preferred embodiment of the sole for a shoe as described herein, the reinforcement frame is placed substantially flat between the surfaces of the upper midsole layer and the lower midsole layer in a sandwich-like arrangement.

[0048] In a preferred embodiment of the sole for a shoe as described herein, the upper midsole layer and the lower midsole layer are joined to each other via a form-fitting connection, thereby defining an outer boundary of the upper midsole layer which is substantially surrounded by the reinforcement frame.

[0049] To engage may be understood as to be accommodated and / or to be received.

[0050] This has the advantage that the upper mid-bottom layer and the lower mid-bottom layer can be easily assembled and can provide a strong construction. Although possible, the strong structure may not necessarily require any separate attachment means, such as adhesives or the like. Therefore, the arrangement can be considered to be at least partially self-supporting.

[0051] The form-fitting connection can be understood as making the upper middle bottom layer and the lower middle bottom layer be shaped or designed to fit into each other (fit into one another). In addition, the reinforcing frame can also be shaped or designed to be assembled between the surfaces formed by the upper middle bottom layer and the lower middle bottom layer, in a sandwich-like arrangement. The various parts involved in the sandwich-like arrangement just fit into each other due to their substantially complementary geometric shapes. This can produce a tight and firm fit without the need for additional fasteners or adhesives, however, the use of additional fasteners or adhesives is not necessarily excluded. The connection can rely on the geometry of the upper middle bottom layer and the lower middle bottom layer to produce a strong and stable attachment. Note that in various examples, it is preferred to use additional fasteners or adhesives, for example, adhesives, etc. can be used to improve the fit between the upper middle bottom layer and the lower middle bottom layer.

[0052] Note that co-molding can be used as an alternative way to arrange the upper and lower mid-bottom layers. Co-molding can also be referred to as overmolding or two-shot molding. Co-molding can be a manufacturing method to create a part or product made of two or more different materials. The method can involve injecting two or more materials into a mold in a sequential manner to produce a single integrated component with different layers or parts. The materials used for co-molding can vary in color, texture, hardness, and even chemical properties.

[0053] The outer boundary of the midsole, which is substantially surrounded by the reinforcement frame, can be defined by this engagement and form-fit connection. This has the advantage that the outer boundary of the midsole defined in this way can be covered by the reinforcement frame. This has the potential to create a smooth overall outer boundary of the sole.

[0054] In one example, the reinforcement frame may at least partially fill a gap disposed between the upper mid-bottom layer and the lower mid-bottom layer as viewed along the vertical axis.

[0055] In a preferred embodiment of the sole for a shoe as described herein, the upper midsole layer is at least partially received in an opening formed by the lower midsole layer.

[0056] This further contributes to a tight and secure fit without the need for additional fasteners or adhesives.However, a form-fitting arrangement alone does not necessarily exclude the use of additional fasteners or adhesives.

[0057] This embodiment can be understood such that the upper middle bottom layer can include an extension, a protrusion, a ridge, etc. This is at least partially received in an opening formed by the lower middle bottom layer, or more generally received in a recess formed by the lower middle bottom layer. Thus, the outer surface of the extension, protrusion, ridge, etc. of the upper middle bottom layer can at least partially contact the inner surface of the recess of the lower middle bottom layer.

[0058] The opening formed by the lower midsole layer can substantially correspond to the underfoot portion of the midsole. In particular, the opening can substantially correspond to the size of the open space as seen in a horizontal plane.

[0059] In a preferred embodiment of a sole for a shoe as described herein, the lower midsole layer has a cutout arranged so that the reinforcement frame is at least partially visible from beneath the lower midsole layer, wherein the cutout preferably has an elongated shape aligned along the heel-to-toe axis of the sole.

[0060] This has the advantage that a person can assess the condition of the reinforcement frame, eg its solidity, firmness etc.

[0061] This may have the further advantage that the appearance of the sole and / or the shoe may be adjusted so as to indicate to the wearer that the visible reinforcement frame may be equipped with a specific function. This may thus influence the suitability of the wearer's performance accordingly. Furthermore, such visibility may primarily influence the performance, confidence and / or motivation of the wearer in participating in a sporting activity.

[0062] The reinforcement frame being at least partially visible from below the lower midsole layer can be understood to mean that during normal use of the sole, a person can identify the reinforcement frame from below the lower midsole layer. The present disclosure also fully encompasses that a portion of the reinforcement frame is not visible from below the lower midsole layer.

[0063] The cutout may be understood as a through hole, a hole, a recess, etc. The cutout may be realized by one or more of a groove, a slit, a cutout and / or a vent, etc. For example, the cutout may form a space without lower or middle substrate material.

[0064] The term "elongated" means that the dimension along one axis of the cutout may be greater than one dimension along the remaining axes, preferably greater than two dimensions along the remaining axes, the remaining axes being substantially perpendicular to the one axis. It should be understood that when describing dimensions herein, manufacturing tolerances must generally be taken into account. Therefore, the dimensions described herein may vary slightly.

[0065] The elongated shape of the cutout aligned along the heel-to-toe axis of the sole may have the advantage that the firmness and / or stability of the lower midsole layer may be substantially maintained and / or at least not substantially impaired while the reinforcement frame is visible from beneath the lower midsole layer.

[0066] The present disclosure also encompasses that the lower mid-bottom layer may include one or more cutouts, in particular, a plurality of cutouts. However, not all cutouts may necessarily be configured such that the reinforcement frame is at least partially visible from below the lower mid-bottom layer.

[0067] In a preferred embodiment of a sole for a shoe as described herein, the cutout of the lower midsole layer is arranged so that a midfoot section of the reinforcement frame (as described in more detail elsewhere herein) is at least partially visible from beneath the lower midsole layer.

[0068] Open Space

[0069] In a preferred embodiment of a sole for a shoe as described herein, the midsole comprises a polymer foam material.

[0070] This has the advantage that the polymer foam material can provide the desired cushioning effect. This is particularly useful in combination with an open space through which the midsole, in particular the upper midsole layer, can at least partially protrude. Furthermore, since the open space is substantially free of a reinforcing frame, the midsole, in particular the upper midsole layer, is not hindered by any structural components when deformed by pressure loads on the sole. This enhances the cushioning effect.

[0071] In a preferred embodiment of a sole for a shoe as described herein, the open space is provided in at least one of: a heel area, a midfoot area and a toe area of ​​the sole.

[0072] This further contributes to the advantages mentioned elsewhere herein in the context of cushioning, while providing adequate energy return. In particular, the open space according to this embodiment can encompass a considerable area under the foot of the sole. Furthermore, in these considerable areas, the reinforcement frame does not substantially interfere with the midsole, block the midsole and / or interfere with the midsole. As a result, the midsole can appropriately provide a cushioning effect.

[0073] In a preferred embodiment of a sole for a shoe as 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 the area under the foot of the sole, and / or at most 99%, preferably at most 95%, most preferably at most 90% of the area under the foot of the sole. The open space may be a three-dimensional space. As will be understood by those skilled in the art, the term "spanning" in this context may mean: a two-dimensional projection of a three-dimensional open space on a two-dimensional area under the foot, spanning the indicated percentage fraction of the area under the foot.

[0074] This further contributes to the advantages mentioned elsewhere herein in the context of cushioning while providing adequate energy return.

[0075] The open space should not span the underfoot region of the sole to such an extent that the stability of the sole may be adversely affected. Therefore, an upper limit of the span should be provided. However, the open space should span the underfoot region at least to such an extent that the advantages of the open space become apparent, such as providing a considerable area in which the deformation of the midsole is not blocked and / or weakened by any structural components (e.g., a reinforcing frame). In addition, spanning the underfoot region of the sole to a greater extent due to the open space can carry the potential for reduced material consumption.

[0076] Therefore, 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 ​​as specified herein.

[0077] Strengthening frame arms

[0078] In a preferred embodiment of the sole for a shoe as described herein, the reinforcing frame comprises an arm having a flat profile in a cross-sectional cut perpendicular to the longitudinal axis of the arm. The flat profile may have a substantially rectangular cross-section.

[0079] The flat profile has the advantage of providing a reinforced frame with minimal bulk and / or minimal physical presence while providing its advantages in terms of enhanced energy return. Furthermore, the flat profile reduces material consumption.

[0080] An arm may be understood as a structural element which essentially forms a reinforcing frame. An "arm" may additionally or alternatively be referred to as a leg or the like.

[0081] The longitudinal axis of the arm can be easily identified as the axis that substantially follows the extension of the largest dimension of the arm.

[0082] In a preferred embodiment of a sole for a shoe as described herein, the flat profile has a width, approximately in a plane defined by the heel-to-toe axis and the 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 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.

[0083] With the width of the flat profile specified in this embodiment, an optimal balance can be achieved between two different and conflicting requirements. On the one hand, sufficient rigidity, improved reinforcement and enhanced energy return are desired, so a larger width would be beneficial. On the other hand, it should be ensured that substantially no disturbance of the midsole occurs, to allow for improved cushioning properties and improved assembly capabilities. For this reason, a smaller width would be beneficial.

[0084] In a preferred embodiment of a sole for a shoe as described herein, the flat profile has a thickness, which is substantially perpendicular to a plane defined by the heel-to-toe axis and the 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 is 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.

[0085] The thickness of the flat profile should not be too large, because this may require more material and may lead to a bulky construction of the reinforcement frame. A smaller thickness can contribute to a more minimalist construction of the reinforcement frame. This has the advantage that the reinforcement frame does not act and / or feel like a large foreign part or object. On the contrary, the reinforcement frame can be smoothly integrated into the sole, which is desired by the wearer. In addition, the use of materials can be reduced thereby, which has economic and ecological 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 total weight of the shoe, which is particularly advantageous when the shoe is used for sports activities (such as running). Therefore, an upper limit of the thickness of the flat profile should be provided. However, the thickness of the flat profile should at least have a minimum value, so that the advantages of the reinforcement frame, such as providing enough energy return to the wearer, become apparent. Therefore, without wishing to be bound by theory, it is believed that the optimal balance between these conflicting requirements can be achieved according to the values ​​specified herein.

[0086] In a preferred embodiment of the sole for a shoe as described herein, the reinforcement frame has a substantially uniform thickness.

[0087] As will be appreciated by those skilled in the art, although the reinforcing frame has a substantially uniform thickness, it is still possible that the reinforcing frame may have certain portions whose thickness is slightly different from the thickness in other portions. For example, manufacturing tolerances may need to be taken into account, which may result in such differences. In addition, the thickness may vary along the width direction of a portion of the reinforcing frame, for example, the thickness may be greater or smaller at the center relative to the outside of the portion. In one example, the surface of the reinforcing frame may be structured, such as embossed, so that slight differences in thickness may exist. Such a structure may facilitate stock fitting of the reinforcing frame. In addition, such a structure may be provided to provide a design vision, thereby engraving the structure.

[0088] First end, second end, three-dimensional shape

[0089] In a preferred embodiment of a sole for a shoe as described herein, the reinforcement frame is formed to define a three-dimensional shape so 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, the two planes being spaced apart 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 at most 5 cm, preferably at most 4.5 cm, more preferably at most 4.2 cm, most preferably at most 4.0 cm.

[0090] 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, a person skilled in the art may identify the distance without any specific equipment.

[0091] The advantage that three-dimensional shape has is that the reinforcement framework is not only located in a plane limited by the axis of the heel of the sole to the toe and the axis of the medial side of the foot to the lateral side of the foot. On the contrary, the reinforcement framework can be arranged in multiple planes and / or regions of the sole, in which this reinforcement is desired and / or is the most effective. The three-dimensional shape can help to rebuild a natural shape, such as an anatomical shape, which can help to more accurately arrange the reinforcement framework at a special position. The three-dimensional shape can also facilitate the standing assembly of the reinforcement framework in the sole. For example, the reinforcement framework can be more easily standing assembled between the upper middle bottom layer and the lower middle bottom layer. This provides the synergistic effect of three parts of the sole, namely the upper middle bottom layer, the lower middle bottom layer and the reinforcement framework.

[0092] In the prior art, multiple separate reinforcement parts or elements are usually required to achieve this effect. According to the reinforcement framework proposed in this article, the inventors have paved the way to overcome this problem.

[0093] At least two substantially parallel planes spaced apart may be understood in such a way that they are spaced apart along a vertical axis.

[0094] The reinforcement frame should not be arranged in two planes spaced apart to such an extent that the arrangement of the reinforcement frame in the sole is compromised. Therefore, the inventors have found that an upper limit should be provided. However, the reinforcement frame should be arranged in two planes spaced apart at least to a minimum extent so that the advantages of the reinforcement frame, such as providing sufficient energy return to the wearer, become apparent. Therefore, 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 ​​as specified herein.

[0095] The plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole may also be referred to as a horizontal plane, eg, horizontal relative to the ground when a shoe including the sole is standing on the ground.

[0096] In a preferred embodiment of a sole for a shoe as described herein, the heel segment of the reinforcement frame extends in an upward direction by a greater amount than any other segment of the reinforcement frame.

[0097] This extension of the heel section has the advantage of further helping to enhance energy return to the wearer during the gait cycle, particularly during the toe-off phase.

[0098] Furthermore, since the heel section can surround the heel portion of the midsole at a higher level, this can have the additional benefit of preventing shear forces and / or vibrations. This can also meet the needs of athletes who are heel-strike players, that is, athletes who first contact the ground with the heel of the shoe.

[0099] In a preferred embodiment of a sole for a shoe as described herein, the reinforcement frame comprises an open frame structure having a first end and a second end, wherein the first end and the second end are spaced apart from each other.

[0100] 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 without a closed connection to the reinforcement frame, the reinforcement frame allows the wearer's foot to be guided while still accommodating the wearer's foot in terms of torsional capabilities. This is particularly the case when dynamic forces are transferred from the lateral side of the wearer's foot to the medial side. This transfer of dynamic forces may occur, for example, during the gait cycle or when the wearer turns, etc.

[0101] Note that the open structure can accommodate such dynamic forces to a greater extent than the closed structures (e.g., plates, etc.) commonly used in the prior art. In addition, such plates of the prior art may be arranged in only one plane parallel to the medial to lateral and heel to toe axes of the sole (rather than being arranged in multiple such planes spaced apart and parallel to each other), which may otherwise surround a large underfoot area of ​​the sole and may harm the wearer. Without wishing to be bound by theory, it is believed that such a plate will considerably reduce torsion and adaptability. The open frame structure of the reinforcement frame as proposed herein allows the freedom to give torsional capability, while at the same time the wearer can be propelled in a forward direction due to energy return.

[0102] In a preferred embodiment of a sole for a shoe as 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 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.

[0103] Spacing the first end and the second end apart allows for greater design freedom and contributes to a more dynamic behavior of the reinforcement frame. In particular, the first end and the second end may be arranged at positions where such energy return may be maximally or at least largely desired. However, the first end and the second end should not be spaced so far apart that the reinforcement frame itself may lose some of its desired stiffness. Therefore, without wishing to be bound by theory, it is believed that an optimal balance between these conflicting requirements may be achieved according to the values ​​as specified herein.

[0104] It should be noted that the length of the sole may generally be measured along the heel to toe axis of the sole.

[0105] In a preferred embodiment of the sole for a shoe as described herein, the first end is arranged in the toe area, preferably in the little toe area.

[0106] This further contributes to the advantages of the frame, as it provides enhanced energy return to the wearer. In particular, support to the toe area may be provided thereby, which may be helpful during the toe-off phase during the gait cycle.

[0107] In a preferred embodiment of the sole for a shoe as described herein, the second end is arranged in a midfoot region of the sole.

[0108] This has the advantage that more energy return can be provided to the midfoot area of ​​the sole and thereby to the midfoot area of ​​the wearer's foot. This is particularly important during the toe-off phase.

[0109] In a preferred embodiment of a sole for a shoe as described herein, the reinforcement frame has the following segments in the following order from the first end to the second end: a substantially straight lateral foot segment, a curved heel segment, a substantially straight medial foot segment, a curved toe segment, and a substantially straight midfoot segment.

[0110] This has the advantage that a greater rigidity and a greater reinforcement effect can be ensured at substantially all desired locations.

[0111] The midfoot section may range from a toe portion to a center portion of the midfoot portion. The midfoot section may have a longitudinal shape. The midfoot section has the additional advantage of providing sufficient stiffness for the toe-off phase. This is particularly beneficial at the end of a person's gait cycle during the toe-off phase. Furthermore, the stiffening of the midfoot to forefoot portion results in enhanced energy return to the wearer.

[0112] In a preferred embodiment of a sole for a shoe as described herein, the width of the midfoot segment, particularly the width of the second end, is greater than any other width of the reinforcement frame, which width is substantially in the plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole.

[0113] The midfoot generally requires greater support and / or stability and is an important part where energy return to the wearer can significantly improve athletic performance. Thus, this embodiment has the advantage that a greater width of the frame, i.e., a wider base of the frame, can meet these needs and can help support the wearer's midfoot.

[0114] In a preferred embodiment of a sole for a shoe as described herein, the width of the reinforcement frame decreases from the second end along the midfoot section toward the toe section, the width being substantially in a plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole.

[0115] This has the advantage that the stock assembly of the reinforcement frame can be enhanced as described elsewhere herein. It is also intended that more foam material can be provided in the midfoot and / or forefoot of the sole as the width of the reinforcement frame decreases towards the toe section. This can enhance the cushioning properties for the wearer's foot. This can be particularly helpful in the forefoot of the sole.

[0116] In a preferred embodiment of a sole for a shoe as described herein, the midfoot section, in particular the second end, extends in a downward direction by a greater amount than any other section of the reinforcement frame.

[0117] This has the advantage that the midfoot of the wearer's foot can be supported and / or stabilized to a greater extent. Thus, this embodiment further improves the sole and makes it particularly useful in sports activities.

[0118] Outsole

[0119] In a preferred embodiment of a sole for a shoe as described herein, the sole comprises an outsole disposed beneath a lower midsole layer.

[0120] The outsole may be the bottom portion of the sole that is at least partially in direct contact with the ground. This means that not the entire outsole must necessarily be in contact with the ground, although this may often be the case. The outsole may provide several advantages that contribute to the overall performance, comfort, grip, durability, stability and support, water resistance and weather resistance of the sole.

[0121] Visibility

[0122] In a preferred embodiment of a sole for a shoe as described herein, the outsole has a cutout arranged such that the reinforcement frame is at least partially visible from underneath the outsole, wherein the cutout preferably has an elongated shape aligned along a heel-to-toe axis of the sole.

[0123] This has the advantage that a person can assess the condition of the reinforcement frame, eg its solidity, firmness etc.

[0124] This may have the further advantage that the appearance of the sole and / or the shoe may be adjusted so as to indicate to the wearer that the visible reinforcement frame may be equipped with a specific function. This may thus influence the suitability of the wearer's performance accordingly. Furthermore, such visibility may primarily influence the performance, confidence and / or motivation of the wearer in participating in a sporting activity.

[0125] The reinforcement frame being at least partially visible may be understood to mean that during ordinary use of the sole, a person can identify the reinforcement frame from underneath the outer sole.

[0126] The cutouts of the outsole may be substantially similar or identical to the cutouts of the lower midsole described in greater detail elsewhere herein.

[0127] The term "elongated" used in the context of the cutouts of the outsole may be understood in a similar manner as used in the context of the cutouts of the lower midsole described in more detail elsewhere herein.

[0128] The elongated shape of the cutouts of the outsole aligned along the heel-to-toe axis of the sole may have the advantage that the firmness and / or stability of the outsole may be substantially maintained and / or at least not substantially impaired, while the reinforcement frame is visible from underneath the outsole.

[0129] It is fully contemplated in the present disclosure that the outsole may include one or more cutouts, in particular, a plurality of cutouts. However, not all cutouts must be configured such that the reinforcement frame is at least partially visible from below the outsole.

[0130] In a preferred embodiment of a sole for a shoe as described herein, the cutout is arranged such that a midfoot section of the reinforcement frame is at least partially visible from beneath the outsole.

[0131] This further contributes to the advantages mentioned elsewhere herein in the context of incisions. Visibility of the midfoot segment may be particularly important, as this segment may provide the majority of energy return. Therefore, being able to easily assess the condition of the midfoot segment - e.g., firmness, firmness, etc. - may be advantageous.

[0132] Possibly, in one example, the lower mid-bottom layer has a cutout that is arranged so that the reinforcement frame is at least partially visible from below the outsole. The cutout of the lower mid-bottom layer preferably has an elongated shape aligned along the heel-to-toe axis of the sole. The cutout of the lower mid-bottom layer can be arranged so that the midfoot section of the reinforcement frame is at least partially visible from below the outsole. The cutout of the lower mid-bottom layer can be shaped to substantially correspond to the cutout of the outsole. In one example, the cutout of the lower mid-bottom layer and the cutout of the outsole can form an integral cutout.

[0133] The same features and advantages as mentioned in relation to the cutouts in the outer sole in the previous embodiments also apply to the cutouts in the lower midsole.

[0134] In a preferred embodiment of the sole for a shoe as described herein, the reinforcement frame is at least partially visible from the outside of the shoe, wherein the reinforcement frame is preferably visible from the medial side, the heel side and / or the lateral side.

[0135] Without wishing to be bound by theory, it is believed that this may have the added benefit of lateral foot stability and / or prevention of ankle twisting. This may be the case because the visibility means that the reinforcement frame may extend to or even slightly beyond the outermost boundaries of the midsole (e.g. foam material). This provides the added benefit.

[0136] Furthermore, visibility from the medial side, the heel side and / or the lateral side of the foot may have the further advantage that the appearance of the sole and / or the shoe may be improved. In particular, it may be easily indicated to the wearer that the sole is provided with a specific function. Such visibility may also primarily influence the performance, confidence and / or motivation of the wearer in participating in sports activities.

[0137] In a preferred embodiment of a sole for a shoe as described herein, the reinforcement frame extends from a heel area of ​​the sole to a toe area of ​​the sole.

[0138] This further contributes to the advantages of the reinforcement frame disclosed elsewhere herein, for example, it provides enhanced energy return to the wearer. In particular, according to this embodiment, the reinforcement frame is disposed in a relatively large area of ​​the sole, while still defining an open space as described elsewhere herein. In this way, impacts received during any phase of the wearer's gait cycle can be stored in the reinforcement frame in the form of energy that is returned to the wearer in order to support propulsive forces in the wearer's direction of motion. This can provide enhanced performance.

[0139] This embodiment may also be useful to an athlete in situations when the athlete is out of their optimal running regime due to fatigue, which may occur illustratively during running at higher speeds and / or during long endurance runs. Since a large area is surrounded by the reinforced frame, the wearer may benefit from the reinforced frame during essentially any type of running regime, whether at the beginning - when the wearer is still fairly energetic, or closer to the end - when fatigue causes a different running regime to prevail.

[0140] Material

[0141] In a preferred embodiment of the sole for a shoe as 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.

[0142] This has the advantage that the upper midsole layer can provide enhanced cushioning for the wearer's foot. This may be because it may at least indirectly contact the wearer's foot. In addition, the lower midsole layer having a more rigid material may provide an improved distribution of forces to the outsole of the sole and / or to the ground.

[0143] It should be noted that the first material, ie the material of the upper, mid and lower layers, can be lighter than the second material while still providing a high energy return to the wearer.

[0144] As referred to herein, "stiffness" may be understood as rigidity or elastic modulus. It may refer to the ability of a material to resist deformation when subjected to an applied force. It may describe how much a material will deflect or stretch in response to an applied load. A more rigid material may undergo less deformation under the same load than a less rigid material. Stiffness is measured by Young's modulus, which quantifies the relationship between stress (force per unit area) and strain (deformation). Stiffness is generally related to a material's ability to maintain its shape and resist bending or flexing.

[0145] In a preferred embodiment of the sole for a shoe as described herein, the reinforcement frame comprises one or more of the following materials or consists of one or more of the following materials: thermoplastic polyurethane (TPU) and / or polyamide, in particular nylon polyamide, and / or carbon fiber, and / or carbon fiber composite material, and / or glass fiber composite material. The reinforcement frame may additionally or alternatively comprise foam, in particular dense foam, such as ethylene vinyl acetate (EVA) foam.

[0146] These materials have the advantage of providing sufficient stiffness and can contribute to enhanced energy return. In addition, these materials can be relatively easily obtained, are cost-effective, and are widely accepted in the field of soles.

[0147] Furthermore, one or more materials from the following more general exemplary group of materials may be used to reinforce the frame: biopolymers, fiber reinforced polymers, reinforced polymer composites, biofibers.

[0148] The reinforcement frame may be manufactured by a double injection process. This process involves injecting the same or different materials, for example different materials with different properties such as different hardness, into the same mold. This may have the advantage of providing a reinforcement frame with different material properties, for example different hardness in different areas of the reinforcement frame.

[0149] In a preferred embodiment of a sole for a shoe as described herein, the midsole contains 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).

[0150] The foam particles are preferably made of or comprise expanded thermoplastic materials, in particular thermoplastic polyurethanes (TPU), polylactates (PLA), polyamides (PA), polyether block amides (PEBA), polyethylene terephthalate (PET), polybutylene terephthalate (PBT) or thermoplastic polyester ether elastomers (TPEE). The foam particles can also be beads containing multiple polymer types in one foam particle, or the foam particles can be a mixture of different particles of different foam polymers, or a combination thereof. Preferably, the foam particles consist of 90% by weight of one or a mixture of these materials. These foam particles are particles comprising so-called bead foams, also referred to in the art as granular / particle foams. Typically, the foams obtained using connected foam particles are given the designation "e" to indicate the bead form of the polymer foam component, for example eTPU.

[0151] Particle foams are particularly useful for providing cushioning as well as energy return effects, as such materials may have good elasticity and cushioning properties. Furthermore, softer or harder materials may be used, depending on the desired degree of cushioning, support, stability and / or firmness. This allows fine-tuning of the response of the midsole under pressure loads on the sole. It is also possible that the choice of the midsole material may also be subject to the material of the upper and / or outsole. This may have advantages for the attachment of the various parts.

[0152] Further advantages of materials that can be used according to the present disclosure can be found in EP2649896A2, WO2016 / 030026A1 and WO2016 / 030333A1, the disclosures of which are incorporated herein by reference.

[0153] Expanded thermoplastic polyurethane (eTPU) foam can be a versatile material that offers several advantages due to its ability to provide comfort, cushioning, insulation and due to its relative lightness. Expanded thermoplastic polyurethane (eTPU) particles offer excellent elasticity and cushioning properties. Thus, external impacts, such as those generated when a shoe sole hits the ground, can be cushioned, thereby achieving pleasant wearing comfort.

[0154] Expanded polyamide (ePA) foam is also a favorable material for use in midsoles. Polyamide foam is lightweight while still maintaining high levels of cushioning, energy return, and comfort.

[0155] In a preferred embodiment of the sole for a shoe as described herein, the midsole comprises or consists of a foam material made in one foaming step. Such foam is often referred to as "homogeneous foam", "block foam" or "integral foam".

[0156] These foams are produced in one foaming step using a blowing agent and these foams do not have an identifiable granular structure, i.e., they do not have any identifiable particles in the finished foam and have only a single internal porous structure, unlike bead foams which contain a plurality of beads, each bead containing an internal porous structure and which have intersections between the individual expanded beads that produce the granular structure.

[0157] The uniform foam or block foam can be made from polymers known in the art, such as ethylene vinyl acetate (EVA), thermoplastic polyester ether elastomer (TPEE), polyether block amide (PEBA), polyurethane (PU), and the like.

[0158] In a preferred embodiment of the sole for a shoe as described herein, the reinforcing frame comprises a second portion which does not surround the outer boundary of the midsole.

[0159] In a preferred embodiment of the sole for a shoe as described herein, the second portion comprises a substantially straight midfoot section of the reinforcement frame.

[0160] shoe

[0161] In another aspect of the present disclosure, these objects are solved by a shoe, in particular a sports shoe such as a running shoe, comprising: a sole according to any of the embodiments described herein; and an upper attached to the sole.

[0162] It goes without saying that the technical properties, advantages and improvements over the prior art shown or described for the soles also apply to shoes, in particular sports shoes. The same applies vice versa.

[0163] The upper can be attached to the sole by any type of suitable attachment means. As those skilled in the art will appreciate, attaching the upper of a shoe to the sole can involve various methods and techniques, depending on the type of shoe, the materials used and / or the desired durability and firmness level of the upper. BRIEF DESCRIPTION OF THE DRAWINGS

[0164] The present invention will be described in more detail below with reference to the accompanying drawings:

[0165] Figure 1 : A sole for a shoe, in particular a sports shoe, according to an embodiment of the present disclosure is shown in an exploded view.

[0166] Figure 2 : A reinforcement frame for a shoe sole according to an embodiment of the present disclosure is shown in a first stereoscopic view.

[0167] Figure 2A : A reinforcement frame for a shoe sole according to an embodiment of the present disclosure is shown in a second stereoscopic view.

[0168] Figure 2B : A reinforcement frame for a shoe sole according to an embodiment of the present disclosure is shown in a third perspective.

[0169] Figure 2C : A reinforcing frame for a shoe sole according to an embodiment of the present disclosure is shown in a fourth stereoscopic view.

[0170] Figure 2D : A schematic cross-sectional view of a reinforcement arm of a reinforcement frame for a shoe sole according to an embodiment of the present disclosure is shown.

[0171] Figure 3 : A shoe, in particular a sports shoe, including an upper according to an embodiment of the present disclosure is shown in a first stereoscopic view.

[0172] Figure 3A : A shoe, in particular a sports shoe, including an upper according to an embodiment of the present disclosure is shown in a second stereoscopic view.

[0173] Figure 3B : A shoe, in particular a sports shoe, including an upper according to an embodiment of the present disclosure is shown in a third stereoscopic view.

[0174] Figure 3C : A shoe, in particular a sports shoe, including an upper according to an embodiment of the present disclosure is shown in a stereoscopic view viewed from the bottom.

[0175] Figure 4 : A schematic cross-sectional view of the midsole of the sole according to an embodiment of the present disclosure is shown (eg Figure 3B and Figure 3C ). DETAILED DESCRIPTION

[0176] Only some possible embodiments of the present invention are described in detail below. However, the present invention is not limited to these, and many other embodiments may be applied without departing from the scope of the present invention. The presented embodiments may be modified in various ways and may be combined with each other as long as they are compatible, and certain features may be omitted as long as they appear unnecessary. In particular, the disclosed embodiments may be modified by combining certain features of one embodiment with one or more features of another embodiment.

[0177] It should be understood that not all features of the described aspects / embodiments must be present to achieve 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. Specifically, those skilled in the art will understand that the 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, as long as the resulting combination falls within the definition of the present disclosure.

[0178] Although the following embodiments are mainly described with reference to soles for shoes, in particular for sports shoes, a person skilled in the art will appreciate that the disclosure according to the present invention may be equally applied to a number of different technical fields and / or use cases.

[0179] Throughout the drawings and description of the present application, the same reference numerals represent the same elements. For the sake of clarity and conciseness, certain aspects of the components or steps of certain embodiments are presented without excessive detail—when such details will be obvious to those skilled in the art based on the teachings herein and / or when such details will obscure the understanding of more relevant aspects of the embodiments.

[0180] As understood by those skilled in the art and / or to avoid redundancy, reference is also made to the explanations in the previous section, which also apply to the detailed description below. In addition, for the sake of brevity and clarity, not all features, parts, elements, aspects, components and / or steps are explicitly indicated by reference numerals. This is particularly applicable to situations where those skilled in the art recognize that these features, parts, elements, aspects, components and / or steps exist in multiple forms.

[0181] definition

[0182] As used herein, the terms "medial side," "medial side side," "medial side region," and / or "medial side portion" of a sole / midsole may refer to an inner side and / or inner edge of the sole / midsole. This side and / or edge may be closest to the center line of the wearer's body when the shoe including the sole is worn. This side and / or edge may extend from the big toe portion to the heel area. The term "medial side portion" may additionally include a small area extending from the medial side toward the heel of the sole to the midline of the toes. The "medial side" and / or "medial side portion" are typically positioned to face the arch of the foot and / or the big toe.

[0183] As used herein, the terms "lateral", "lateral side", "lateral side region" and / or "lateral side portion" of a sole / midsole may refer to an outer side and / or outer edge of the sole / midsole. When a shoe including the sole is worn, the side and / or edge may be further away from the center line of the wearer's body. The side and / or edge may extend from a small toe portion to a heel area. The term "lateral side portion" may further include a small area extending from the lateral side of the foot toward the midline from the heel to the toes of the sole.

[0184] As used herein, the terms "heel portion" and / or "heel region" of a sole / midsole may refer to the back portion of the sole / midsole, e.g., the rear portion of the sole, which generally provides support and cushioning for the heel of the wearer's foot when worn. In the heel portion and / or heel region of the sole, the rear end of the wearer's foot may be received. In particular, the "calcaneal region" of the wearer's foot may be received. The calcaneal is a large bone that makes up the heel of the foot.

[0185] As used herein, the term "toe portion" and / or "toe region" of a sole / midsole may refer to the front portion of the sole / midsole, for example, the forefoot portion of the sole / midsole, in which the toes of the wearer's foot may be received when worn. The wearer's toes may include the big toe and / or the big toe joint. When worn, it may include the front end of the foot. In addition, when worn, the toe portion and / or toe region may include the distal phalanges, the middle phalanges, and the proximal phalanges of the wearer's foot. When worn, the toe portion and / or toe region may additionally include the front portions of the metatarsal bones of the wearer's foot.

[0186] As used herein, the term "forefoot" of a sole may refer to the front portion of the outsole. The forefoot portion of the outsole may cover an area of ​​the foot corresponding to the toes and toe bases. In one example, the forefoot may cover less than about half of the front portion of the underfoot portion or less than about one-third of the underfoot portion.

[0187] As used herein, the term "underfoot region" of a sole may be determined, for example, in a plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole. In other words, the underfoot region of the sole may be measured substantially in a horizontal plane perpendicular to the vertical axis. The underfoot region of the sole may be the area that the sole of the wearer's foot will contact when a shoe including such a sole is worn (regardless of the presence of an upper and / or an insole).

[0188] As used herein, the term "upward direction" may be a direction from the foot portion of the upper to the upper portion of the upper. For example, the upward direction may be a direction from the foot portion of the upper to the instep portion of the upper. The upward direction may be substantially parallel to the vertical axis.

[0189] As used herein, the term "downward direction" may be directed substantially opposite to the upward direction.

[0190] As used herein, the term "vertical axis" may generally correspond to a body axis of the wearer from head to feet when the wearer is standing on the ground.

[0191] Unless otherwise indicated, the term "substantially" or "substantially" used in this context may be understood to mean to a great extent or to a significant extent, or for the most part, or essentially. In particular, the term includes small tolerances, such as manufacturing tolerances and / or variations. Thus, any value or arrangement described by using this term may deviate slightly from the described value or arrangement.

[0192] The term "and / or" is only used to describe the association relationship of associated objects, and indicates that there may be three relationships. For example, A and / or B can represent three situations: that is, A exists alone, both A and B exist, and B exists alone. In addition, the character " / " in the present disclosure generally indicates that the previous and next associated objects form an "or" relationship. As another example, in the case mentioned in this article, at least the first portion of the reinforcement frame substantially surrounds the outer boundary of the midsole in the lateral foot area, medial foot area, heel area and / or toe area of ​​the midsole, which means that the lateral foot area, medial foot area, heel area and toe area are all connected in an "and / or" association manner. Alternatively, the phrase may mean that at least the first portion of the reinforcement frame substantially surrounds the outer boundary of the midsole in one or more of the following: the lateral foot area, medial foot area, heel area and toe area of ​​the midsole.

[0193] Terms such as “bottom”, “top”, “one end”, “the other end”, “outside”, “above”, “above”, “inside”, “below”, “lower than”, “horizontal”, “coaxial”, “center”, “end”, “part”, “length”, “outer end”, etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings.

[0194] The terms "above", "higher than", "lower than", "below", etc. used in the present invention to indicate spatial relative positions are used for the purpose of convenience of explanation to describe the relationship of the soles, elements, parts, objects and / or features shown in the accompanying drawings relative to another sole, element, part, object and / or feature.

[0195] Description of the drawings

[0196] Figure 1 A sole 101 for a shoe 100 , in particular a sports shoe 100 , according to an embodiment of the present disclosure is shown in an exploded view.

[0197] The sole 101 includes: a midsole 110; and a reinforcement frame 130. At least the first portion 136, 137, 138, 139 (such as Figures 2 to 2C ) substantially surrounds the outer boundary 111 of the midsole 110 in one or more of the following areas: a lateral area 116, a medial area 115, a heel area 117, and a toe area 118 of the midsole 110, thereby defining an open space 112 ( Figure 1 The underline of the reference numeral 112 in FIG. 1 indicates that the open space includes at least the area / space surrounded by the reinforcement frame 130. Figure 4 Outer boundary 111 is indicated and described in greater detail.

[0198] In addition, if Figure 1 As can be seen from the exploded view in FIG. 1 , a portion of the midsole 110 is received in the open space 112 .

[0199] like Figures 2 to 2C As best seen in FIG. 1 , the first portion 136, 137, 138, 139 of the reinforcement frame 130 that substantially surrounds the outer boundary 111 of the midsole 110 may be one or more of the following: a substantially straight lateral foot segment 136, a curved heel segment 137, a substantially straight medial foot segment 138, and a curved toe segment 139. Accordingly, the reinforcement frame 130 may include a second portion, such as a substantially straight midfoot segment 140. As shown in FIG. Figure 1 and from Figures 2 to 2C It can be concluded that the second portion may not surround the outer boundary 111 of the midsole 110 in one or more of the following: the lateral foot region 116 , the medial foot region 115 , the heel region 117 , and the toe region 118 of the midsole 110 .

[0200] As can be seen, a portion of the outer boundary 111 of the midsole 110 that is substantially surrounded by the reinforcement frame 130 faces the lateral side 102 of the sole 101 and / or the medial side 103 of the sole 101. Therefore, the outer boundary 111 may have a normal (such as a normal on a surface) that at least partially points to 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 a line that is perpendicular to the surface formed by the outer boundary 111.

[0201] The open space 112 is substantially disposed in a plane defined by the heel-to-toe axis HT and the medial-to-lateral axis ML of the sole. As will be appreciated, since the open space 112 may be three-dimensional, it encompasses more than the plane, however, other planes may extend at least through the plane, such as Figure 1 Visible in.

[0202] The midsole 110 includes an upper midsole layer 120 and a lower midsole layer 125, wherein a reinforcing frame 130 is sandwiched between the upper midsole layer 120 and the lower midsole layer 125. Figure 1 In the exemplary embodiment depicted in the exploded view of FIG, it can be seen that a portion of the upper midsole layer 120 is received in the open space 112. However, it is not excluded that other portions of the midsole 110, such as a portion of the lower midsole layer 125, are received in the open space 112.

[0203] As described elsewhere herein, alternatively, the upper mid-layer 120 and the lower mid-layer 125 can be formed as a unitary piece so that they are not separate. In this alternative, the reinforcement frame 130 can be at least partially received in the midsole 110 by a groove, latch, cutout, etc. formed in the midsole 110.

[0204] The upper middle bottom layer 120 and the lower middle bottom layer 125 are engaged with each other by a form-fitting connection, so that they define an outer boundary 111 that is substantially surrounded by the reinforcement frame 130. In particular, the upper middle bottom layer 120 can be at least partially received in an opening 126 formed by the lower middle bottom layer 125, which is substantially filled by the upper middle bottom layer 120 after receiving (e.g., Figure 4 best seen in ). Figure 1 As can be understood from the exploded view of FIG. 1 , the reinforcing frame 130 will be placed between the upper midsole layer 120 and the lower midsole layer 125 so that the circumferential surface 129 (also on the lower midsole layer 125) of the lower midsole layer 125 Figure 4 ) substantially abuts against the reinforcing frame 130 and presses it against the circumferential surface 121 of the upper midsole layer 120 (also Figure 4 The circumferential surfaces 129, 121 of the lower middle bottom layer 125 and the upper middle bottom layer 120 are substantially facing each other, and the reinforcing frame 130 is placed therebetween. Figure 3 , Figure 3A , Figure 3B and Figure 4 See in more detail.

[0205] The midsole 110 may include a polymer foam material. In this way, due to the good cushioning properties of the foam material, the physical arrangement of the reinforcement frame 130 and the midsole 110, especially the physical arrangement of the upper midsole layer 120 and the lower midsole layer 125, in terms of cushioning and energy return, becomes more significant.

[0206] like Figure 1 As can be seen in FIG. 1 , the open space 112 is arranged in at least one of the following areas: a heel area 112 a , a midfoot area 112 b and a toe area 112 c of the sole 101 .

[0207] The open space may 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 the 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. Figure 1 104. 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, when the shoe 100 including such a sole 101 is worn by a wearer, the underfoot region 104 may be the region that the sole of the wearer's foot will contact (regardless of the presence of the upper 160 and / or the insole).

[0208] like Figure 1 As further shown in FIG. 1 , the reinforcement frame 130 extends from the heel region 112 a of the sole 101 to the toe region 112 c of the sole 101 .

[0209] It should be noted that the frame-like design of the reinforcement frame 130 provides stiffness and stability in the portion below the foot where it is most needed, while providing a minimalist design. The advantage of weight reduction can also be achieved.

[0210] The reinforcement frame 130 as described herein can be used, for example, to increase the overall stability of the midsole 110 and can provide a significant increase in energy return to the wearer without substantially compromising the cushioning and resiliency properties of other components of the midsole 110. Thus, the reinforcement frame 110 adds further possibilities for affecting the stability properties of the sole 101.

[0211] These advantages are particularly significant in many sports activities. This may be because athletes can perform multiple different movement patterns, including but not limited to the wearer's foot contacting the ground via a posterior heel strike, an inner heel strike, an outer heel strike, or an inner forefoot strike. These different impact patterns can result in different pressure loads on the sole 101 and on the wearer's foot. According to the sole 101 proposed herein, these different pressure loads can be advantageously returned to the wearer while ensuring improved cushioning.

[0212] Figure 2 , Figure 2A , Figure 2B and Figure 2C The reinforcement frame 130 for the sole 101 of the shoe 100 according to an embodiment of the present disclosure is shown at four different angles. Figure 2D 1 and 1. A schematic cross-sectional view of a reinforcing arm 131 of a reinforcing frame 130 used in a sole 101 of a shoe 100 according to an embodiment of the present invention is shown along a cutting line 131b (eg, Figure 2 100 ). The features shown in these figures are applicable to all other embodiments of the sole 101 for the shoe 100 described elsewhere herein. For the sake of brevity, not all features of the sole 101 are shown and / or described.

[0213] The reinforcement frame 130 includes an arm 131 that includes a flat profile 132 in a cross-sectional cut line 131b perpendicular to a longitudinal axis 131a of the arm 131. The flat profile 132 has a width w_fp substantially in a plane defined by a heel-to-toe axis HT and a medial-to-lateral axis ML of the sole 101 (e.g., Figure 2D ), the width w_fp is 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 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.

[0214] Furthermore, the flat profile 132 has a thickness t_fp substantially perpendicular to a plane defined by the heel-to-toe axis HT and the 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 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 reinforcement frame 130 may have a substantially uniform thickness. However, as in particular from Figure 2 , Figure 2A and Figure 2BIt can be deduced that the reinforcement frame 130 can be provided with structures such as raised structures and / or relief structures. These structures can have any shape and can serve the purpose of strengthening some parts of the reinforcement frame 130. In one example, these structures can be provided in a substantially regular pattern along the length of the arm 131. For example, from Figure 2A As can be seen in FIG. 1 , such structure is provided at least along the lateral foot segment 136 (as further described below), along the heel segment 137 and / or along the medial foot segment 138 of the arm 131 of the reinforcement frame 130 .

[0215] The reinforcement 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, the two planes 142, 143 being spaced apart (indicated by the term s) 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 at most 5 cm, preferably at most 4.5 cm, more preferably at most 4.2 cm, most preferably at most 4.0 cm. The two substantially parallel planes 142, 143 are spaced apart (indicated by the term s) 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 at most 5 cm, preferably at most 4.5 cm, more preferably at most 4.2 cm, most preferably at most 4.0 cm. Figure 2C It is represented by a dotted line and is understood to be projected into infinite space in the horizontal direction.

[0216] like Figure 2C As best shown in FIG. 1 , the heel segment 137 of the reinforcement frame 130 extends in the upward direction UD by a greater amount than any other segment 136 , 138 , 139 , 140 of the reinforcement frame 130 .

[0217] As from Figure 2 , Figure 2A , Figure 2B and Figure 2C It can be concluded that the reinforcement frame 130 includes 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 may be spaced apart from each other 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%, and most preferably at least 50% (e.g., Figure 1 ), and / or at most 80%, preferably at most 70%, more preferably at most 60%, and most preferably at most 50% of the length of the sole 101. It will be appreciated that the length of the sole 101 can be measured along the heel-to-toe axis HT of the sole 101.

[0218] The first end 135 may be disposed in a toe region 112c of the sole 101, preferably in a small toe region of the sole 101. The second end 141 may be disposed in a midfoot region 112b of the sole 101.

[0219] The reinforcement frame 130 can have the following segments 136, 137, 138, 139, 140 in the following order from the first end 135 to the second end 141: a substantially straight lateral foot segment 136, a curved heel segment 137, a substantially straight medial foot segment 138, a curved toe segment 139 and a substantially straight midfoot segment 140.

[0220] It should be noted that during athletic activities, the midfoot region 112b of the sole 101 and / or the toe region 112c of the sole 101 portion may be subjected to a range of motion and / or pressure. Therefore, improvements to these regions 112b, 112c contribute to a more comfortable and enhanced sole 101.

[0221] It should be noted that although the reinforcement frame 130 includes the midfoot section 140, the reinforcement frame 130 can define an open space 112 in the midfoot region 112b of the sole 101. This can be seen in particular from Figure 2B and Figure 2C It can be concluded.

[0222] As in particular from Figure 2 and Figure 2A As can be seen from the figure, the width w_se of the midfoot section 140, especially the width w_se of the second end 141, is greater than any other width of the reinforcement frame 130 (in Figure 2A , 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, the width w_se being substantially along a plane defined by the heel-to-toe axis HT and the medial-to-lateral axis ML of the sole 101 .

[0223] Furthermore, the width w_se of the reinforcement frame 130 decreases from the second end 141 along the midfoot section 140 toward the toe section 139 , the width w_se being substantially in a plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole.

[0224] For example, from Figure 2C It can be seen that the midfoot segment 140 , and in particular the second end 141 , extends in the downward direction DD by a greater amount than any other segment 136 , 137 , 138 , 139 of the reinforcement frame 130 .

[0225] In one example, the three-dimensional shape can be understood as allowing the reinforcement frame 130 to be formed to define a spiral shape. The helical shape can be a shape similar to a helix or a spiral. A spiral is a curve that winds around a central axis. In one example, the spiral can be wound around the central axis in a consistent manner, thereby producing a spiral pattern. In another example, the distance to the central axis can vary, which can be a preferred shape to adapt to the shape of the midsole 110.

[0226] In an example, Figure 2 , Figure 2A , Figure 2B and Figure 2C The reinforcement frame 130 shown can be understood to be configured to form a sling shot that generally starts from under the wearer's pinky toe, surrounds the wearer's heel, extends under the wearer's big toe, and returns under the wearer's midfoot. This has the advantage that the reinforcement frame 130 provides a rigid structure that can store a large energy load when the sole contacts the ground and provide a large energy return to the wearer to increase propulsion in the direction of running.

[0227] This configuration facilitates stiffening of the midfoot portion to the forefoot portion, resulting in enhanced energy return, while also stabilizing the wearer's landing phase and supporting the wearer. This may be helpful when the wearer's gait cycle is not ideal and / or varies based on wearer fatigue.

[0228] As from Figure 2 As can be understood in the figure, an exemplary dotted line frame 130a and an exemplary dotted line frame 130b are shown, which can represent the first portion 130a of the reinforcement frame 130 and the second portion 130b of the reinforcement frame 130.

[0229] When the sole 101 is in an assembled state (as can be seen from Figure 1 1 ), a first portion 130a of the reinforcement frame 130 may be covered and / or embedded in the midsole 110. It should be noted that this first portion 130a may be different from a second portion of the reinforcement frame 130, such as a substantially straight midfoot segment 140 (which may not surround the outer boundary 111 of the midsole 110). This means that the first portion 130a of the reinforcement frame 130 is considered to surround the outer boundary 111 of the midsole 110, as described in more detail elsewhere herein.

[0230] When the sole 101 is in an assembled state (as can be seen from Figure 1 ), the second portion 130b of the reinforcement frame 130 may be exposed to the outside.

[0231] The size of the first portion 130a and / or the second portion 130b can vary, as will be appreciated by those skilled in the art. In particular, the first portion 130a and / or the second portion 130b can extend along one or more of: a substantially straight lateral foot segment 136, a curved heel segment 137, a substantially straight medial foot segment 138, and a curved toe segment 139. In addition, as will be appreciated by those skilled in the art, their widths can also vary depending on the specific arrangement of the sole 101. Thus, the size of the first portion 130a and / or the second portion 130b can vary between: Figure 2 It is shown by way of example only.

[0232] Figure 3 , Figure 3A and Figure 3B A shoe 100, in particular a sports shoe 100, according to an embodiment of the present disclosure is shown at three different angles, including an upper 160. The features shown in these figures are applicable to all other embodiments of the sole 101 for the shoe 100 described elsewhere herein. For the sake of brevity, not all features of the sole 101 are shown and / or described.

[0233] The sole 101 includes an outer sole 150 disposed below the lower midsole 125. The outer sole 150 has a cutout 151 (e.g. Figure 3B ), which is arranged so that the reinforcement frame 130 is at least partially visible from below the outsole 150. The cutout 151 can have an elongated shape aligned along the heel-to-toe axis HT of the sole 101.

[0234] The cutout 151 is arranged so that the midfoot section 140 of the reinforcement frame 130 is at least partially visible from below the outsole 150 .

[0235] In addition, the lower mid-layer 125 has a cutout 127, which is arranged so that the reinforcement frame 130 is at least partially visible from below the outsole 150. The 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 mid-layer 125 can be arranged so that the midfoot section 140 of the reinforcement frame 130 is at least partially visible from below the outsole 101. The cutout 127 of the lower mid-layer 125 can be shaped to substantially correspond to the cutout 151 of the outsole 150. On the one hand, such cutouts 151, 127 have the advantage of less material required in manufacturing. On the other hand, they allow an indication to the wearer and / or personnel to assess the condition of the reinforcement frame 130. In addition, the cutouts 151, 127 can allow breathability, for example, they can allow air circulation and moisture wicking, which can reduce overheating and sweat accumulation. In addition, the cutouts 151, 127 may have the further advantage that the life of the shoe may be increased due to the reduction of moisture. In addition, the cutouts 151, 127 may 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 100 is particularly advantageous when used for athletic activities such as running.

[0236] In the longitudinal direction of the outsole 150 and / or the midsole 110, for example along the heel-to-toe axis HT, one or both of the cuts 151, 127 may have a length 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.

[0237] One or both of the cutouts 151 , 127 may have a tapered shape along the heel-to-toe axis HT.

[0238] In addition, if Figure 3 and Figure 3A It can be seen that the reinforcement frame 130 is at least partially visible from the outside of the shoe 100. For example, the reinforcement frame 130 is preferably visible from the medial side 103, the heel side and / or the lateral side 102 of the sole 101.

[0239] Furthermore, one or more recesses 128 may be disposed in the lateral area 116 of the midsole 110 and / or in the medial area 115 of the midsole 110, or in other words, in the sidewalls of the midsole 110. Figure 3A, four recesses 128 are shown. One or more recesses 128 may have an elongated shape. One or more recesses 128 are angled relative to the upward direction UD and the downward direction DD, wherein the angle increases from the recess 128 arranged in the front portion of the midsole 110 to the recess 128 in the rear portion. The increase in angle may be substantially continuous. Figure 3A As shown, one or more recesses 128 may be formed substantially continuously across the upper midsole layer 120 and the lower midsole layer 125. In addition, because the one or more recesses 128 provide space in the material of the midsole 110, the reinforcement frame 130 is more visible in these recesses 128.

[0240] One or more recesses 128 may have the advantage that the reinforcement frame 130 does not completely abut the lower circumferential surface 121 of the upper midsole layer 120 and / or the upper circumferential surface 129 of the lower midsole layer 125. This may allow for some variation and fine tuning in the energy return to the wearer.

[0241] One or more recesses 128 may not be through holes. One or more recesses 128 may have the shape of one of the following: a slit, a groove, a cutout or a vent. These shapes may have the potential to impart certain functional properties to the midsole 110. For example, the distribution of the pressure load may thereby be affected to a greater extent. This may be appreciated by an athlete performing his or her sporting activity.

[0242] In addition, the shape can be described as follows and has the following advantages:

[0243] The slits can be relatively long, narrow openings and / or cuts in a material (e.g., the material of the midsole 110). Slits typically have a length greater than their width, and in some cases, their length is significantly greater than their width. For example, their length can be greater than their width by 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 greater factors. Slits can be straight or curved, and they can include one or more straight segments and one or more curved segments. In addition, one or more recesses 128 shaped like slits can be designed to collapse and / or facilitate guided deformation of the sole 101 together with one or more remaining portions of the sole 101.

[0244] The grooves may be long, narrow channels and / or recessed portions that may be cut into a material, such as the material of the midsole 110. The grooves may be used for a variety of purposes, such as directing the flow of liquids, etc. This may help remove moisture generated by sweat, etc. This may in turn improve odor. The grooves may be shallow and / or deep. As will be appreciated by those skilled in the art, 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.

[0245] A cut may refer to a separation or division made in a material, such as the material of midsole 110. The cut may be provided by applying a sharp blade or tool to the material. The cut may be straight or angled and may be used for a wide variety of purposes, including creating an opening, shaping a material, or changing the structure of an object, such as midsole 110. The cut may appear in a variety of shapes, including one or more of a straight segment, an arcuate segment, an angled segment, a regular segment, or an irregular segment.

[0246] A vent is an opening or passage in a material, such as the material of midsole 110. The vent may allow a gas, such as air, or a liquid to move therethrough. The vent may be used to regulate the temperature of the wearer's foot. The vent may be implemented in a variety of shapes and / or sizes, including one or more of straight segments, curved segments, corner segments, regular segments, or irregular segments.

[0247] The upper 160 can be attached to the sole 101 by any type of suitable attachment means. For example, the attachment can include glue / adhesive bonding, which is a common method in which, for example, a strong adhesive is applied to one or both of the upper 160 and the sole 101. Subsequently, they can be pressed together and allowed to bond. This method can be used for sports shoes, casual shoes, etc. In addition, the attachment can include stitching the upper 160 to the sole 101. This method can include stitching the upper 160 and the sole 101 together. The stitches can be fully or at least partially visible, or fully or at least partially hidden in the sole 101. In addition, the attachment can include injection molding. This method can include injecting molten material into a mold that shapes the lower part of the sole 101 and the upper 160 separately or together. Once the parts are substantially cooled and / or solidified, the upper 160 and the sole 101 can be fused together. This can be performed in some types of sports shoes. In addition, the attachment can include direct injection molding. In this method, the sole 101 material can be injected directly around the upper 160. Then, this can lead to seamless and firm combination of upper 160 and sole 101. It can be used for sports and / or outdoor footwear articles generally. In addition, attachment can include applying a sole sheet containing sole material (e.g., rubber and / or EVA), which is cut to shape and then attached to sole 101 and upper 160 using adhesive and / or thermal bonding. In addition, attachment can include strobel stitching, which can be performed in sports shoes and / or casual shoes generally. In this method, upper 160 is stitched to insole 101 before being attached to sole 101 using adhesive or cement. In addition, attachment can include curling, including curling of metal and / or plastic for connecting upper 160 and sole 101 together. In addition, attachment can include lasting. This lasting method can include: upper 160 is pulled onto last (i.e., the form of shoe shape), and fixed to sole 101 by stapling, stitching and / or gluing. In addition, the attachment may include vulcanization. In this method, a rubber sole 101 may be used, which is cured so as to combine it with the upper 160. It is often used in some types of sports shoes. In addition, the upper 160 may be attached to the sole 101 by welding, thermal bonding, ultrasonic bonding, etc.

[0248] Figure 3C A shoe 100, in particular a sports shoe 100, according to an embodiment of the present disclosure is shown in a perspective view from the bottom, the shoe including an upper 160. The features shown in these figures are applicable to all other embodiments of the sole 101 for the 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 125 has a cutout 127 that is arranged so that the reinforcement frame 130 is at least partially visible from under the outsole 150. The cutout 127 is in contact with the outer sole 150. Figure 3BThe cutout 127 extends from the heel region 117 of the lower midsole layer 125 toward the midfoot portion of the lower midsole layer 125. The cutout 127 of the lower midsole layer 125 can be shaped to substantially correspond to the cutout 151 of the outsole 150. Figure 3B Similar advantages of the cutouts 151, 127 explained also apply to this embodiment. Figure 3B Compared to the embodiment shown, Figure 3C The configuration of the cutouts 127, 151 of the illustrated embodiment is preferred.

[0249] Figure 4 FIG. 1 shows a schematic cross-sectional view of a midsole 110 used in a sole 101 of a shoe 100 according to an embodiment of the present disclosure. Figure 3B and Figure 3C The cross-sectional cut line BB in FIG. The features shown in this figure are applicable to all other embodiments of the sole 101 for the shoe 100 described elsewhere herein. For the sake of brevity, not all features of the sole 101 are shown and / or described.

[0250] like Figure 4 As shown, the outer boundary 111 of the midsole 110 may be a surface of the midsole 110 , a normal line of which is substantially perpendicular to the upward direction UD and the downward direction DD.

[0251] In addition, 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 a portion that is visible when the midsole 110 is viewed from the outside, for example, from a side of the sole 101, such as the medial side and / or the lateral side. As will be appreciated, since the reinforcement frame 130 substantially surrounds the outer boundary 111 of the midsole 110, the outer boundary 111 may not be completely visible from the outside of the shoe 100.

[0252] also, Figure 4 An open space 112 is shown, which is defined by the reinforcement frame 130 and in which the reinforcement frame 130 is absent. Figure 4 1 is a cross-sectional cutaway view in the midfoot region 112b of the sole 101, and thus also shows the midfoot region 112b surrounded by the open space 112. A portion of the midsole 110 is received in the open space 112. Figure 4 In the example of FIG. 1 , it is indicated that a portion of the upper mid-bottom layer 120 is received in the open space 112. In other words, the upper mid-bottom layer 120 at least partially fills the open space 112 so as to be joined with the lower mid-bottom layer 125.

[0253] As from Figure 4As further seen, the reinforcement frame 130 in the cross-sectional cutaway view has a midfoot segment 140 that is spaced farther apart in the downward direction DD than the medial segment 138 and / or the lateral segment 136 .

[0254] In any embodiments of the sole 101 for the shoe 100 as described herein, the upper midsole layer 120 includes a first material and the lower midsole layer 125 includes a second material, wherein the first material preferably has a lower stiffness than the second material.

[0255] In any embodiments of the sole 101 for the shoe 100 as described herein, the reinforcing frame 130 includes one or more of the following materials or is composed of one or more of the following materials: thermoplastic polyurethane (TPU), polyamide - in particular nylon polyamide, carbon fiber, carbon fiber composite material, glass fiber composite material.

[0256] In any embodiment of the sole 101 for the shoe 100 as described herein, the midsole 110 contains 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).

[0257] In any embodiment of the sole 101 for the shoe 100 described herein, the foam particles for the midsole 110 may be made of or contain an expanded thermoplastic material, in particular thermoplastic polyurethane (TPU), polylactic acid (PLA), polyamide (PA), polyether block amide (PEBA), polyethylene terephthalate (PET), polybutylene terephthalate (PBT) or thermoplastic polyester ether elastomer (TPEE). In any embodiment of the sole 101 for the shoe 100 as described herein, the foam particles for the midsole 110 may also be beads containing multiple polymer types in one foam particle, or the foam particles may be a mixture of different particles of different foam polymers, or a combination thereof. In any embodiment of the sole 101 for the shoe 100 as described herein, the foam particles for the midsole 110 are composed of 90% by weight of one or a mixture of these materials. The particles are described in more detail elsewhere herein.

[0258] In any embodiment of the sole 101 for the shoe 100 as described herein, the midsole 110 includes or consists of a foam material that is manufactured in one foaming step. As described in more detail elsewhere herein, such foams are generally referred to as "homogeneous foams," "block foams," or "integral foams."

[0259] As described in more detail elsewhere herein, these foams can be used as the material for the midsole 110 in any embodiment of the sole 101 of the shoe 100 described herein, these foams are produced in a single foaming step using a foaming agent, and these foams do not have an identifiable granular structure, that is, they do not have any identifiable particles within the finished foam and have only a single internal porous structure, which is different from the bead foam, which includes multiple beads, each bead containing an internal porous structure, and the bead foam has intersections between the individual expanded beads that produce the granular structure.

[0260] The uniform foam or block foam can be made from polymers known in the art, such as ethylene vinyl acetate (EVA), thermoplastic polyester ether elastomer (TPEE), polyether block amide (PEBA), polyurethane (PU), and the like.

[0261] On the other hand, particle foam materials or particle foams are different from homogeneous foams. To produce particle foams, expanded particles (or beads) are produced in a first step from a foamed granular base material. These expanded beads can then be assembled in a second step to form a cohesive structure, wherein in the final foam, the individual particle boundaries are discernible, i.e. clearly visible. In this context, expansion means that each individual particle has a foam core with many small foam cells, i.e. the particles may not consist of dense solid material.

[0262] It should be noted that, as will be understood by those skilled in the art, any one or more of the embodiments and / or examples described herein may be combined with other aspects as described herein, and the details of the embodiments and / or examples may also be omitted. The scope of protection is determined by the claims and is not limited by the embodiments and / or examples disclosed in the above drawings.

[0263] List of reference symbols used

[0264] 100 shoes, especially sneakers

[0265] 101 Soles for shoes

[0266] 102 Outer side of the sole

[0267] 103 Inside side of the sole

[0268] 104 Underfoot area of ​​the sole

[0269] 110 midsole

[0270] 111 Outer boundary of midsole

[0271] 112 Open Space

[0272] 112a The heel area of ​​the sole

[0273] 112b midfoot area

[0274] 112c sole toe area

[0275] 115 Medial area of ​​the midsole

[0276] 116 Outer foot area of ​​the midsole

[0277] 117 Heel area of ​​the midsole

[0278] 118 Toe area of ​​the midsole

[0279] 120 Upper, middle and lower levels

[0280] 121 Circumferential surface of upper, middle and bottom layers

[0281] 125 Lower middle bottom

[0282] 126 Opening formed by the lower, middle and bottom layers

[0283] 127 Cutout / hole in the bottom middle layer

[0284] 128 One or more recesses

[0285] 129 Circumferential surface of lower middle layer

[0286] 130 Strengthening the framework

[0287] 130a Strengthen the first part of the frame

[0288] 130b Strengthen the second part of the frame

[0289] 131 Strengthening frame arm

[0290] 131a Longitudinal axis of arm

[0291] 131b Cross-section cutting line

[0292] 132 Flat Profile

[0293] w_fp Width of the flat profile

[0294] t_fp Thickness of the flat profile

[0295] s The distance between two different planes defined by the heel-to-toe axis and the medial-to-lateral axis of the sole

[0296] 135 Strengthen the first end of the frame

[0297] 136 reinforcing frame substantially straight lateral foot section

[0298] 137 Strengthen the curved heel section of the frame

[0299] 138 substantially straight medial foot section of reinforcement frame

[0300] 139 Curved toe section for reinforced frame

[0301] 140 Strengthens the substantially straight midfoot section of the frame

[0302] 141 Strengthen the second end of the frame

[0303] 142 A first plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole

[0304] 143 A second plane defined by the heel-to-toe axis and the medial-to-lateral axis of the sole

[0305] w_seWidth of the second end of the reinforcement frame

[0306] w_ts The width of the toe section of the reinforcement frame

[0307] w_ls Width of the outer foot section of the reinforcement frame

[0308] 150 outsole

[0309] 151 Cutouts / holes in the outsole

[0310] 160 upper

[0311] The heel-to-toe axis of the HT sole (longitudinal direction)

[0312] ML The axis from the inside to the outside of the foot of the sole

[0313] UD Up Direction

[0314] DD Downward direction

Claims

1. A sole (101) for a shoe (100), in particular a sports shoe, such as a running shoe, comprising: Midsole (110); as well as Strengthening 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 area (116), a medial area (115), a heel area (117) and a toe area (118) of the midsole (110), thereby defining an open space (112), wherein a portion of the midsole (110) is received in the open space (112).

2. The sole (101) according to claim 1, wherein: A portion of the outer boundary (111) of the midsole (110) substantially surrounded by the reinforcement frame (130) faces the lateral side (102) of the sole (101) and / or the medial side (103) of the sole (101).

3. The sole (101) according to any one of the preceding claims, wherein: 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 (101).

4. The sole (101) according to any one of the preceding claims, wherein: The midsole (110) includes an upper midsole layer (120) and a lower midsole layer (125), wherein the reinforcement frame (130) is sandwiched between the upper midsole layer (120) and the lower midsole layer (125).

5. The sole (101) according to the preceding claim, wherein: The upper middle bottom layer (120) and the lower middle bottom layer (125) are joined to each other via a form-fitting connection, thereby defining the outer boundary (111) of the upper middle bottom layer (120) which is substantially surrounded by the reinforcement frame (130).

6. The sole (101) according to claim 4 or 5, wherein: The upper mid-layer (120) is at least partially received in an opening (126) formed by the lower mid-layer (125).

7. The sole (101) according to any one of claims 4 to 6, wherein: The lower middle layer (125) has a cutout (127) arranged so that the reinforcement frame (130) is at least partially visible from below the lower middle layer (125), Wherein the cutout (127) preferably has an elongated shape aligned along a heel-to-toe axis (HT) of the sole (101).

8. The sole (101) according to any one of the preceding claims, wherein The midsole (110) comprises a polymer foam material.

9. The sole (101) according to any one of the preceding claims, wherein: The open space (112) is provided in at least one of: a heel region (117), a midfoot region (112b) and a toe region (118) of the sole (101).

10. The sole (101) according to any 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%, and most preferably at least 80% of the underfoot region (104) of the sole (101). and / or at most 99%, preferably at most 95%, most preferably at most 90% of the underfoot area (104) of the sole (101).

11. The sole (101) according to any one of the preceding claims, wherein The reinforcement frame (130) comprises an arm (131) comprising a flat profile (132) in a cross-sectional cut line (131b) perpendicular to a longitudinal axis (131a) of the arm (131).

12. The sole (101) according to the preceding claim, wherein The width of the flat profile (132) is substantially in a plane defined by a heel-to-toe axis (HT) and a medial-to-lateral axis (ML) of the sole (101), the width being 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 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. The sole (101) according to claim 11 or 12, wherein: The flat 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), the thickness being 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 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. The sole (101) according to any one of the preceding claims, wherein The reinforcement frame (130) has a substantially uniform thickness.

15. The sole (101) according to any one of the preceding claims, wherein The reinforcement frame (130) is formed to define a three-dimensional shape such that the reinforcement frame is arranged in at least two substantially parallel planes (142, 143) defined by a heel-to-toe axis (HT) and a medial-to-lateral axis (ML) of the sole (101), the two planes (142, 143) being spaced apart 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 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. The sole (101) according to any one of the preceding claims, wherein The heel section (137) of the reinforcement frame (130) extends in the upward direction (UD) by a greater amount than any other section of the reinforcement frame (130).

17. The sole (101) according to any one of the preceding claims, wherein The reinforcement frame (130) includes 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.

18. The sole (101) according to claim 17, wherein: The first end (135) and the second end (141) are spaced apart from each other by at least 10% of the length of the sole (101), preferably at least 20% of the length of the sole (101), more preferably at least 30%, even more preferably at least 40%, most preferably at least 50%, and / or 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. The 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 little toe region of the sole (101).

20. The sole (101) according to any one of claims 17 to 19, wherein: The second end (141) is disposed in a midfoot region (112b) of the sole (101).

21. The sole (101) according to any one of claims 17 to 20, wherein: The reinforcement frame (130) has the following segments (136, 137, 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), Wherein, the first portion of the reinforcement frame preferably includes one or more of the substantially straight lateral foot segment (136), the curved heel segment (137), the substantially straight medial foot segment (138) and the curved toe segment (139).

22. The sole (101) according to claim 21, wherein The width of the midfoot section (140), in particular the width (w_se) of the second end (141), is greater than any other width (w_ts, w_ls) of the reinforcement frame (130), and the widths (w_se, w_ts, w_ls) are substantially in a plane defined by a heel-to-toe axis (HT) and a medial-to-lateral axis (ML) of the sole (101).

23. The sole (101) according to claim 21 or 22, wherein: The width (w_se, w_ts, w_ls) of the reinforcement frame (130) decreases from the second end (141) along the midfoot section (140) toward the toe section (139), the width being substantially in a plane defined by a heel-to-toe axis (HT) and a medial-to-lateral axis (ML) of the sole (101).

24. The sole (101) according to any one of claims 21 to 23, wherein: The midfoot section (140), and in particular the second end (141), extends in a downward direction (DD) by a greater amount than any other section (136, 137, 138, 139) of the reinforcement frame (130).

25. The sole (101) according to any one of the preceding claims 1 to 3 and 5 to 24 and the further claim 4, wherein: The sole (101) includes an outer sole (150) arranged below the lower midsole (125).

26. The shoe sole (101) according to claim 25, wherein: The outer sole (150) has a cutout (151) arranged so that the reinforcement frame (130) is at least partially visible from below the outer sole (150), Wherein the cutout (151) preferably has an elongated shape aligned along a heel-to-toe axis (HT) of the sole (101).

27. The sole (101) according to claim 21 or 26, wherein: The cutout (151) is arranged so that the midfoot section (140) of the reinforcement frame (130) is at least partially visible from below the outsole (150).

28. The sole (101) according to any one of the preceding claims, wherein The reinforcement frame (130) is at least partially visible from the exterior of the shoe (100).

29. The sole (101) according to the preceding claim, wherein The reinforcement frame (130) is preferably visible from the medial side (103), the heel side and / or the lateral side (102).

30. The sole (101) according to any one of the preceding claims 1 to 3 and 5 to 29 and the additional claim 4, wherein: The upper mid-bottom layer (120) comprises a first material, and the lower mid-bottom layer (125) comprises a second material, wherein the first material preferably has a lower stiffness than the second material.

31. The sole (101) according to any one of the preceding claims, wherein The reinforcement frame (130) comprises one or more of the following materials or consists of one or more of the following materials: thermoplastic polyurethane (TPU), polyamide, especially nylon polyamide, carbon fiber, carbon fiber composite material, glass fiber composite material, ethylene vinyl acetate (EVA).

32. The sole (101) according to any one of the preceding claims, wherein The midsole (110) contains or consists of a granular foam material, in particular a granular 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. The sole (101) according to any one of the preceding claims, wherein The midsole (110) comprises or consists of a uniform foam material.

34. The sole (101) according to any one of the preceding claims, wherein The reinforcement frame (130) includes a second portion that does not surround the outer boundary (111) of the midsole (110).

35. The sole (101) according to claim 21, in, The reinforcing frame (130) includes a second portion that does not surround the outer boundary (111) of the midsole (110); and wherein the second portion includes the substantially straight midfoot section (140) of the reinforcement frame (130).

36. A shoe (100), in particular a sports shoe, such as a running shoe, comprising: A sole (101) according to any one of claims 1 to 35; as well as A shoe upper (160) is attached to the shoe sole (101).

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