A running shoe and its sole

Abstract

This invention discloses a running shoe and its sole, comprising: an upper midsole layer close to the foot, which is a shock-absorbing and rebounding layer; a support layer, which is a rigid structural layer, with the maximum thickness of the forefoot section of the support layer being greater than the maximum thickness of the heel section; a bottom layer, which is an abrasion-resistant layer; and a support and cushioning layer for cushioning the support layer, located between the support layer and the bottom layer, and between the upper midsole layer and the support and cushioning layer, with the maximum height of the forefoot section of the sole being greater than the maximum height of the heel section. By setting the maximum height of the forefoot section of the sole to be greater than the maximum height of the heel section, a forefoot-high, heel-low sole is formed to adapt to the runner's forefoot and midfoot strike running posture. Furthermore, by adding a support and cushioning layer to cushion the support layer, breakage of the support layer is prevented, and the shock absorption effect of the sole is improved, extending its service life.

Description

Technical Field

[0001] This invention relates to the field of footwear technology, and in particular to a running shoe and its sole. Background Technology

[0002] Most people who run in shoes typically use a heel-first strike pattern, which is why current running shoes emphasize heel cushioning. However, research has found that a forefoot-midfoot strike pattern can reduce ground contact time and thus improve running efficiency. Therefore, to increase running speed, it's necessary to adjust your running style, gradually shifting from a heel-first strike to a forefoot-midfoot strike pattern.

[0003] Currently, conventional running shoes, whether thin-soled or thick-soled, are mainly designed for heel-strike running styles. Because current running shoe soles emphasize heel cushioning, the body becomes overly reliant on heel cushioning and it is not easy to change the existing heel-strike running style. If an adjustment to the running style is needed, current conventional running shoes do not have corresponding designs for forefoot strike styles.

[0004] Therefore, how to provide a running shoe that is suitable for forefoot strike running is a problem that urgently needs to be solved by people in this technical field. Summary of the Invention

[0005] In view of this, the present invention provides a running shoe sole suitable for forefoot strike running. Furthermore, the present invention also provides a running shoe having the aforementioned sole.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A running shoe sole, characterized in that it comprises:

[0008] The upper layer of the shoe midsole, which is close to the sole of the foot, is a shock-absorbing and rebound layer;

[0009] A 3D three-dimensional support layer, wherein the support layer is a rigid structural layer, and the maximum thickness of the forefoot section of the support layer is greater than the maximum thickness of the heel section of the support layer;

[0010] The base layer is a wear-resistant layer.

[0011] A support cushioning layer for cushioning the support layer, the support cushioning layer being located between the support layer and the bottom layer, the support layer being located between the upper layer of the shoe midsole and the support cushioning layer, and the maximum height of the forefoot portion of the shoe sole being greater than the maximum height of the heel portion.

[0012] Preferably, in the above-mentioned shoe sole, the upper layer of the midsole and the supporting and cushioning layer can both be EVA, PU, ​​TPU, TPE or nylon PEBAX polymer foam materials.

[0013] Preferably, in the above-mentioned sole, the support layer is a 3D structure, and the forefoot segment and / or the heel segment are both curved surfaces with lateral inclination.

[0014] Preferably, in the above-mentioned shoe sole, the hardness of the outsole is 50°-70° (Shore A), and the density is not greater than 1.5 g / cm³. 3 The coefficient of friction for dry friction systems is not less than 0.7, and the coefficient of friction for wet friction systems is not less than 0.5.

[0015] Preferably, in the above-mentioned sole, the support and cushioning layer includes separate forefoot and heel sections, or the support and cushioning layer is an integral structure.

[0016] Preferably, in the above-mentioned sole, the height difference between the thickness of the forefoot portion and the thickness of the heel portion of the sole is 5mm-20mm.

[0017] Preferably, in the above-mentioned sole, the thickness of the forefoot segment near the heel segment is greater than the thickness of the forefoot segment away from the heel segment.

[0018] Preferably, in the above-mentioned sole, the thickness of the heel section near the forefoot section is greater than the thickness of the heel section away from the forefoot section.

[0019] Preferably, in the above-mentioned sole, one side of the support and cushioning layer is bonded to the bottom layer, the other side of the support and cushioning layer is bonded to the upper layer of the midsole, and the support layer is embedded between the support and cushioning layer and the upper layer of the midsole.

[0020] A running shoe includes a sole, wherein the sole is any of the soles described above.

[0021] This invention provides a running shoe sole that, by setting the maximum height of the forefoot greater than the maximum height of the heel, creates a forefoot-high, heel-low sole to accommodate the runner's forefoot and midfoot strike pattern. Furthermore, by adding a support and cushioning layer, shock absorption is provided to prevent breakage of the support layer, while simultaneously improving the sole's shock absorption effect and extending its service life. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an exploded view of the sole of the running shoe disclosed in an embodiment of the present invention;

[0024] Figure 2 This is an exploded front view of the sole of a running shoe disclosed in an embodiment of the present invention;

[0025] Figure 3 This is a partial side view of the sole of a running shoe disclosed in an embodiment of the present invention. Detailed Implementation

[0026] This invention discloses a running shoe sole suitable for forefoot strike running. Furthermore, this invention also discloses a running shoe having the aforementioned sole.

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1-3 As shown, this application discloses a running shoe sole, including an upper midsole layer 1, a support layer 2, a bottom layer 4, and a support and cushioning layer 3. The upper midsole layer 1 is a shock-absorbing and rebounding layer, primarily providing shock absorption and rebound for the sole, mitigating shock during movement and protecting the bones. The thickness and shape of the upper midsole layer 1 need to be designed in conjunction with the running shoe sole and are not limited here. The aforementioned support layer 2 is a support component of the sole, primarily providing rigid support and playing a key role in the sole's functionality. It provides three-dimensional rigidity to the sole, improving the transition during running and enhancing running performance. The bottom layer 4, as the layer in contact with the sole surface, needs to have strong wear resistance and slip resistance to ensure the sole's lifespan and safety. The support and cushioning layer 3, which is set on the basis of the above, is located between the support layer 2 and the bottom layer 4. The support layer 2 is located between the upper layer 1 of the midsole and the support and cushioning layer 3. The maximum height of the forefoot part of the sole formed by the above components is greater than the maximum height of the heel part, which defines the composition and shape of the sole.

[0029] In this application, the maximum height of the forefoot is set to be greater than the maximum height of the heel, thus forming a forefoot-high, heel-low sole to accommodate the runner's forefoot and midfoot strike. Furthermore, this application adds a support and cushioning layer 3 to cushion the support layer 2, preventing it from breaking and improving the sole's shock absorption, thereby extending its lifespan.

[0030] In a specific embodiment, both the upper layer 1 of the shoe midsole and the supporting cushioning layer 3 can be made of EVA, PU, ​​TPU, TPE, or nylon PEBAX polymer foam. In practice, the upper layer 1 of the shoe midsole and the supporting cushioning layer 3 can be made of the same material or different materials. Furthermore, the upper layer 1 of the shoe midsole and the supporting cushioning layer 3 can have the same hardness or different hardness; that is, the upper layer 1 of the shoe midsole can be softer or harder. The materials and hardness of the upper layer 1 of the shoe midsole and the supporting cushioning layer 3 can be set according to different needs, and all are within the protection range.

[0031] The support layer 2 disclosed in this application is a 3D structure, specifically, shaped like a spoon, meaning that the forefoot segment and / or heel segment are both curved surfaces with a lateral inclination. In a specific embodiment, the forefoot segment extends longitudinally with curvature from the corresponding toe to the front of the arch, and its projected outline corresponds to the projected outline of the forefoot. It can be further divided into a corresponding toe region (part) and a corresponding metatarsal region. The frontmost point of the corresponding toe region is the frontmost point of the rigid component, with the side corresponding to the big toe being the medial side and the side corresponding to the little toe being the lateral side. The end of the corresponding metatarsal region corresponds to the front of the arch and has a smaller width. The frontmost line of the forefoot segment corresponding to the toe part can be a straight line or a curve (including an arc or curved line that conforms to the toe outline). Furthermore, the forefoot segment extends longitudinally in an arc shape, and the curvature of its corresponding toe region and corresponding metatarsal region can be the same or slightly different. The heel segment then extends from the corresponding heel to the forefoot segment, specifically extending longitudinally to the front of the arch, including the corresponding heel area and the corresponding arch area; the rear end of the corresponding heel area is the rear end of the rigid component, and the corresponding arch area is the connection point between the heel segment and the forefoot segment.

[0032] In practice, the support layer 2 can be made of carbon fiber, fiberglass, or nylon—any material with high rigidity and toughness is acceptable. The specific thickness and material of the support layer 2 can be customized according to different needs, all within the protection range. The shape of the support layer 2 can be optimized using ergonomics. Preferably, the length of the support layer 2 is not less than half the length of the sole, extending from the heel to the toe.

[0033] In a preferred embodiment, the hardness of the aforementioned base layer 4 is 50°-70° (Shore A), and the density is not greater than 1.5 g / cm³. 3The dry friction coefficient is not less than 0.7, and the wet friction coefficient is not less than 0.5. The hardness of the upper layer 1 of the midsole can be 30°-50° (Shore C), and the material density is less than 0.2 g / cm³. 3 Those skilled in the art will understand that the specific hardness, density, and other parameters of the supporting cushioning layer 3 and the upper layer 1 of the shoe midsole can be set according to different needs, and all are within the protection range.

[0034] The support and cushioning layer 3 disclosed in the above embodiments can be an integral structure or a split structure. In one specific embodiment, the forefoot section and the heel section of the support and cushioning layer 3 are set as separate structures. In practice, the support and cushioning layer 3 can also be multiple split components to facilitate processing and adjust thickness requirements.

[0035] Preferably, the thickness difference between the forefoot portion and the heel portion of the sole is 5mm-20mm. Based on the above structure, the height difference between the forefoot and heel portions can be achieved through the height difference between the forefoot and heel sections of the supporting cushioning layer 3, or it can be achieved simultaneously through the height difference of the supporting layer 2. The height difference between the forefoot and heel portions can also be achieved through the thickness difference of different components.

[0036] Because runners vary greatly in skill level, from amateur to professional athletes, their muscle capacity differs significantly, resulting in different demands on foot muscle strength. Therefore, to cater to runners of different skill levels, this application includes three drop schemes:

[0037] Based on the sole making full contact with the ground, a heel-to-toe drop of 20mm, with the forefoot higher than the heel, places the highest demands on foot muscles, meeting the needs of professional athletes in competition and training. Similarly, a heel-to-toe drop of 15mm places moderate demands on foot muscles, meeting the needs of elite runners in competition and training. A heel-to-toe drop of 10mm places lower demands on foot muscles, suitable for most amateur runners in competition and training. In other words, the heel-to-toe drop of the sole can have a certain range; the greater the drop, the higher the demands on the runner's muscle strength.

[0038] Compared to traditional running shoe soles, the sole in this application features a high forefoot and low heel structure; the heel thickness is less than the forefoot thickness. The biomechanical characteristics of a forefoot-landing running posture are: the forefoot lands first → a rapid transition to the heel (the heel bears almost no weight) → then a final push-off from the forefoot to propel the foot forward. The "spoon-shaped" structure of the sole in this application, with its higher forefoot and lower heel, is better suited to the biomechanical characteristics of forefoot-landing running, providing a professional functional running shoe for individuals using this forefoot-landing running style.

[0039] Based on the above technical solution, in this application, the thickness of the forefoot section near the heel is greater than the thickness of the forefoot section away from the heel. Furthermore, when the sole is placed normally on the ground, the height of the side of the forefoot section away from the heel is higher than the height of the side of the forefoot section near the heel, thus causing the toe tip of the sole to curve upwards to adapt to the changes in the human foot during running.

[0040] Similarly, the thickness of the heel section closer to the forefoot is set to be greater than the thickness of the section farther from the forefoot. This ensures heel shock absorption while reducing overall weight. For example, a standard adult men's size 41 shoe weighs 150g-300g. Those skilled in the art will understand that the shape and size of the forefoot and heel sections can be customized to meet different needs, and all are within the protection range.

[0041] Based on the above technical solution, the support and cushioning layer 3 disclosed in this application is bonded to the bottom layer 4 on one side and to the upper layer 1 of the shoe midsole on the other side. The support layer 2 is embedded between the support and cushioning layer 3 and the upper layer 1 of the shoe midsole. It can be completely buried and built in, or it can be partially exposed (exposed on the sidewall or bottom surface).

[0042] In addition, this application also discloses a running shoe, including a sole, wherein the sole is the sole disclosed in the above embodiments. Therefore, the running shoe with this sole also has all the above-mentioned technical effects, which will not be described in detail here.

[0043] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A running shoe sole, characterized in that, include: The upper layer (1) of the shoe midsole is close to the sole of the foot, and the upper layer (1) of the shoe midsole is a shock-absorbing and rebound layer; A 3D support layer (2) provides rigid support for the sole. The support layer (2) is a rigid structure layer. The maximum thickness of the forefoot section of the support layer (2) is greater than the maximum thickness of the heel section of the support layer (2). The support layer (2) is a 3D structure. Both the forefoot section and the heel section are curved surfaces in the lateral direction, forming a continuous 3D spoon-shaped structure. The bottom layer (4) is a wear-resistant layer; A support cushioning layer (3) is used to cushion the support layer (2). The support cushioning layer (3) is located between the support layer (2) and the bottom layer (4). The support layer (2) is located between the upper layer (1) of the shoe midsole and the support cushioning layer (3). The maximum height of the forefoot part of the shoe sole is greater than the maximum height of the heel part.

2. The sole according to claim 1, characterized in that, The upper layer (1) of the shoe midsole and the supporting and cushioning layer (3) are both made of EVA, PU, ​​TPU, TPE or nylon PEBAX polymer foam materials.

3. The sole according to claim 1, characterized in that, The hardness of the base layer (4) is Shore A 50°-70°, and the density is not greater than 1.5 g / cm³. 3 The coefficient of friction for dry slip is not less than 0.7, and the coefficient of friction for wet slip is not less than 0.

5.

4. The sole according to claim 1, characterized in that, The support and cushioning layer (3) includes the separate forefoot segment and the heel segment, or the support and cushioning layer (3) is an integral structure.

5. The sole according to claim 4, characterized in that, The difference in thickness between the forefoot portion and the heel portion of the sole is 5mm-20mm.

6. The sole according to claim 4, characterized in that, The thickness of the forefoot segment near the heel is greater than the thickness of the forefoot segment away from the heel.

7. The sole according to claim 4, characterized in that, The thickness of the heel segment closer to the forefoot segment is greater than the thickness of the heel segment farther from the forefoot segment.

8. The sole according to claim 1, characterized in that, The support and cushioning layer (3) is bonded to the bottom layer (4) on one side and to the upper midsole layer (1) on the other side. The support layer (2) is embedded between the support and cushioning layer (3) and the upper midsole layer (1).

9. A running shoe, comprising a sole, characterized in that, The sole is the sole as described in any one of claims 1-8.

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