A sole with a front-heel cushioning and a shoe

CN224864028UActive Publication Date: 2026-10-20ANTA (CHINA) CO LTD
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Patent Information

Application Number
CN202522534915.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-28
Publication Date
2026-10-20
Estimated Expiration
2035-11-28

AI Technical Summary

Technical Problem

但是该种结构较为复杂,并且对前掌区域和后跟区域不同性能要求的针对效果较差

Benefits of technology

技术方案一提供一种前掌回弹后跟缓震的鞋底,该鞋底包括中底基体、回弹块和缓震块,其中中底基体的前掌部和后跟部分别凹陷设有第一凹槽和第二凹槽,回弹块和缓震块分别适配嵌入第一凹槽和第二凹槽中。该结构利用中底基体作为统一的承载框架,将回弹功能和缓震功能分别附加在前掌部和后跟部,由于回弹块和缓震块各自的物理性能特点,使得该鞋底在前掌蹬地发力能够直接作用于回弹块,后跟的落地冲击能够直接作用于缓震块,同时相互之间不会产生干扰,并且结构简单,易于制造。其中,本方案的关键在于令回弹块和缓震块形状适配地嵌入到第一凹槽和第二凹槽中,形状适配的目的在于,对于回弹块而言,由于回弹块具有大于中底基体的垂直回弹率,当足部前掌发力蹬地时,中底基体的第一凹槽侧壁对嵌入其中的回弹块形成围压约束,限制了回弹材料在受压时的侧向过度膨胀,这种侧向约束迫使材料的形变能量更多地转化为垂直方向的回弹动能,从而在不改变鞋底整体硬度感的前提下,显著提升了前掌起跳阶段的能量反馈效率;而对于缓震块而言,周围硬度相对较高的中底基体构成了刚性边界,在足部触地瞬间,缓震块发生形变吸收冲击能量,而周围的中底基体限制了缓震块的过度溃缩,提供了必要的结构支撑。因此,本方案通过在中底基体上嵌入回弹块和缓震块,利用凹槽的定位与围压作用,实现了前掌高回弹与后跟高缓震功能的独立运行,整体结构简单,并且直接针对足部的前掌区域和后跟区域实现功能,针对性高。

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Abstract

The utility model provides a kind of shoe sole of front palm rebound heel shock absorption, comprising: insole matrix, it is delimited with front palm part, arch part and heel part by front to back respectively corresponding to human foot;Insole matrix is recessed with first recess in its front palm part, and it is recessed with second recess in its heel part;Rebound block, its shape is adaptively embedded in first recess, and its upper side surface is flush with the upper side surface of insole matrix;The vertical rebound rate of rebound block is greater than the vertical rebound rate of insole matrix;Shock absorbing block, its shape is adaptively embedded in second recess, and its upper side surface is flush with the upper side surface of insole;The shock absorption G value of shock absorbing block is less than the shock absorption G value of insole matrix.The shoe sole realizes the structure of front palm rebound heel shock absorption, and the pertinence is high.
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Description

Technical Field

[0001] This invention relates to the field of shoe sole technology, specifically to a shoe sole and shoe with forefoot rebound and heel cushioning. Background Technology

[0002] The midsole of athletic shoes is a core component determining the comfort and performance of the footwear, primarily providing cushioning, rebound, and foot support. During exercise, users have different performance requirements for different parts of the foot. For example, the forefoot area requires high rebound to increase jump height, while the heel area requires good cushioning to absorb impact. To meet these performance needs, current shoe soles generally feature multi-layered midsoles, such as a softer upper layer and a harder lower layer; or they may incorporate additional mechanical shock-absorbing structures, such as air cushioning. However, this structure is relatively complex and offers less targeted effectiveness for the different performance requirements of the forefoot and heel areas. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned defects or problems in the prior art and to provide a shoe sole and shoe with forefoot rebound and heel cushioning, wherein the structure of the shoe sole for achieving forefoot rebound and heel cushioning is simple and highly targeted.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: Technical Solution 1: A shoe sole with forefoot rebound and heel cushioning, comprising: a midsole base, which is defined from front to back as a forefoot portion, an arch portion, and a heel portion corresponding to the human foot; the midsole base has a first groove recessed in its forefoot portion and a second groove recessed in its heel portion; a rebound block, which is shaped to be fitted into the first groove, and its upper surface is flush with the upper surface of the midsole base; the vertical rebound rate of the rebound block is greater than the vertical rebound rate of the midsole base; a cushioning block, which is shaped to be fitted into the second groove, and its upper surface is flush with the upper surface of the midsole; the shock absorption G-value of the cushioning block is less than the shock absorption G-value of the midsole base.

[0005] Technical Solution 2 based on Technical Solution 1: The shape of the rebound block on the projection plane perpendicular to the thickness direction is inclined from the outer rear side to the inner front side.

[0006] Technical Solution 3 based on Technical Solution 2: The shape of the rebound block on the projection plane perpendicular to the thickness direction is defined by the connection of an inner section, a front convex section, a first transition section, an outer section, a rear convex section, and a second transition section; the inner section extends from back to front and adapts to the shape change of the inner edge of the midsole substrate; the front convex section connects with the front end of the inner section and extends forward before bending outward and backward; the first transition section connects with the outer end of the front convex section and extends smoothly outward and backward; the outer section connects with the outer section of the first transition section and extends backward, adapting to the shape change of the outer edge of the midsole substrate; the rear convex section connects with the rear end of the outer section and extends backward before bending inward and forward; the second transition section connects with the inner end of the rear convex section and extends smoothly inward and backward before bending forward and connecting with the rear end of the inner section.

[0007] Technical Solution 4 based on Technical Solution 3: The position of the forward convex segment in the rebound block is adapted to correspond to the thumb of the foot, and the position of the rear convex segment is adapted to correspond to the metatarsophalangeal joint of the little toe of the foot.

[0008] Technical Solution 5 based on Technical Solution 4: The inner section of the rebound block is close to the inner edge of the midsole substrate, and the outer end of the rebound block is close to the outer edge of the midsole substrate.

[0009] Technical Solution Six based on Technical Solution One: The shape of the damping block on the projection plane perpendicular to the thickness direction is elliptical.

[0010] Technical solution seven based on technical solution six: The position of the shock-absorbing block is adapted to correspond to the central region of the calcaneal tuberosity of the foot.

[0011] Technical solution eight based on technical solution one: the thickness of the rebound block and the damping block is uniform.

[0012] Technical solution nine based on technical solution eight: the thickness of the damping block is greater than the thickness of the rebound block.

[0013] In addition, the present invention also provides technical solution ten: a shoe, which includes an upper and a sole based on any one of technical solutions one to nine, wherein the upper is attached to the sole.

[0014] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects: Technical Solution 1 provides a shoe sole with forefoot rebound and heel cushioning. The sole includes a midsole base, a rebound block, and a cushioning block. The forefoot and heel portions of the midsole base are respectively provided with a first groove and a second groove, and the rebound block and cushioning block are respectively fitted into the first and second grooves. This structure utilizes the midsole base as a unified load-bearing frame, adding rebound and cushioning functions to the forefoot and heel portions respectively. Due to the individual physical properties of the rebound block and the cushioning block, the force exerted by the forefoot during push-off directly acts on the rebound block, and the impact of heel landing directly acts on the cushioning block, without interference between them. Furthermore, the structure is simple and easy to manufacture. The key to this design lies in fitting the rebound block and cushioning block into the first and second grooves with appropriate shapes. The purpose of this shape fitting is that, for the rebound block, since the rebound block has a higher vertical rebound rate than the midsole matrix, when the forefoot pushes off the ground, the sidewall of the first groove of the midsole matrix forms a confining constraint on the rebound block embedded therein, limiting the excessive lateral expansion of the rebound material under pressure. This lateral constraint forces more of the material's deformation energy to be converted into vertical rebound kinetic energy, thereby significantly improving the energy feedback efficiency of the forefoot during the take-off phase without changing the overall hardness of the sole. As for the cushioning block, the relatively hard midsole matrix around it forms a rigid boundary. At the moment the foot touches the ground, the cushioning block deforms to absorb impact energy, while the surrounding midsole matrix limits the excessive collapse of the cushioning block, providing the necessary structural support. Therefore, this solution embeds rebound blocks and cushioning blocks into the midsole substrate, and utilizes the positioning and confining effect of the grooves to achieve independent operation of the high rebound function of the forefoot and the high cushioning function of the heel. The overall structure is simple and directly targets the forefoot and heel areas of the foot, making it highly targeted.

[0015] In technical solution two, the rebound block is shaped to extend from the outer rear side to the inner front side on the projection surface. This shape is roughly the same as the layout structure of the metatarsophalangeal joint of the human foot, which can adapt to the bending of the forefoot of the human foot, so that the rebound block can better fit the shape change of the forefoot of the human foot, thereby enabling the human foot to always receive energy feedback from the rebound block.

[0016] In technical solution three, the specific shape of the rebound block is defined. Compared with a simple rectangle or circle, this multi-segment irregular shape can minimize the stress concentration at the interface between the rebound block and the midsole substrate, and can better adapt to the shape changes of the forefoot of the human foot, ensuring flexible bending of the forefoot while providing a large area of ​​rebound support.

[0017] In technical solution four, the forefoot convex section corresponds to the big toe and the posterior convex section corresponds to the metatarsophalangeal joint of the little toe, ensuring that the rebound function covers the main force-generating area of ​​the forefoot and avoids other areas, thus preventing the rebound function from interfering with the support function of the midsole matrix.

[0018] In technical solution five, the inner and outer ends of the rebound block are close to the edge of the midsole matrix, ensuring the lateral coverage of the rebound block. Even when the foot is tilted significantly or exerts force laterally, the point of force is still within the coverage of the rebound block, avoiding the response lag that occurs in the edge area due to being filled only by the midsole matrix.

[0019] In technical solution six, the cushioning block adopts an elliptical design. Compared with a polygonal structure, its rounded edge contour eliminates stress concentration points at the corners. The elliptical interface can more evenly transfer impact stress to the surrounding midsole matrix, reducing the risk of midsole matrix cracking due to excessive local shear force.

[0020] In technical solution seven, the position of the shock absorber is aligned with the central area of ​​the calcaneal tuberosity, which can directly absorb energy at the main pressure points and improve the shock absorption effect of the shock absorber.

[0021] In technical solution eight, the rebound block and the damping block each maintain a uniform thickness. The uniform thickness ensures that the rebound block and the damping block are uniformly compressed at all locations when under pressure, avoiding local bottoming out or uneven rebound response caused by gradual thickness changes.

[0022] In technical solution nine, the thickness of the shock absorber is set to be greater than that of the rebound block. The thicker shock absorber provides ample deformation space to prevent instantaneous bottoming out, while the thinner rebound block reduces the ineffective stroke required for compression deformation, allowing athletes to more quickly sense ground feedback and complete the start. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is an exploded view of the forefoot rebound and heel cushioning sole structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the forefoot rebound and heel cushioning sole of an embodiment of the present invention.

[0025] Explanation of key figure labels: Midsole base 100; forefoot portion 101; arch portion 102; heel portion 103; first groove 110; second groove 120; Spring block 200; inner section 201; forward convex section 202; first transition section 203; outer section 204; rear convex section 205; second transition section 206; 300 shock absorber blocks. Detailed Implementation

[0026] 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 preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0028] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0029] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0030] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0031] Example This embodiment relates to a shoe, which includes an upper and a sole, the upper being attached to the sole. Specifically, the sole and the upper can be fixedly connected by means of bonding, sewing, injection molding, or a combination of the above processes. A cold bonding process is preferred, in which the bottom edge of the upper is tightly bonded to the upper surface of the sole using an adhesive to ensure a strong connection and maintain the lightweight characteristics of the athletic shoe. The upper is constructed as a cavity structure for wrapping and supporting the wearer's foot; its material is not particularly limited and can be selected from fabrics, natural leather, synthetic leather, thermoplastic polyurethane film, or a composite combination of the above materials.

[0032] Reference Figure 1 The sole consists of a midsole base 100, a rebound block 200, and a cushioning block 300.

[0033] The midsole substrate 100 corresponds to the human foot and is defined from front to back as a forefoot portion 101, an arch portion 102, and a heel portion 103. A first groove 110 is recessed in the forefoot portion 101, and a second groove 120 is recessed in the heel portion 103. The shape of the midsole substrate 100 is approximately the same as that of the human foot, and corresponds to the structure of the human foot, being defined from front to back as the forefoot portion 101, the arch portion 102, and the heel portion 103. It should be understood that the division of the various parts of the midsole substrate 100 in this invention is only a general division based on the structure of the human foot, and there are no clear dividing lines between the parts. Those skilled in the art can understand this division and determine its specific meaning. The midsole substrate 100 is preferably made of a polymeric foam material with good structural stability and certain cushioning performance, such as ethylene-vinyl acetate copolymer or polyurethane foam. The midsole base 100 remains continuous and has a certain thickness at the arch portion 102 to provide the torsional rigidity required for movement. The first groove 110 and the second groove 120 are both blind hole structures formed by recesses from the upper surface of the midsole base 100 downwards (i.e., not penetrating the bottom surface of the midsole base 100). Each groove has a flat bottom wall and a side wall extending approximately vertically upwards around the bottom wall, thereby defining the installation space for accommodating the rebound block 200 and the shock absorber 300, respectively.

[0034] The rebound block 200 is shaped and fitted into the first groove 110, with its upper surface flush with the upper surface of the midsole substrate 100. The vertical rebound rate of the rebound block 200 is greater than that of the midsole substrate 100. Specifically, the rebound block 200 is preferably made of a thermoplastic elastomer material processed by supercritical physical foaming, such as supercritically foamed thermoplastic polyurethane (E-TPU), polyether block amide (PEBAX), or nitrogen-modified ethylene-vinyl acetate copolymer (EVA). This material has a uniform and dense closed-cell microbubble structure, giving it lightweight and highly elastic physical properties. To ensure sufficient energy feedback at the moment of takeoff, the vertical rebound rate of the rebound block 200 is set between 65% and 85% (preferably above 75%), which is significantly higher than the 40% to 55% vertical rebound rate typically found in the midsole substrate 100.

[0035] The spring block 200, on its projection plane perpendicular to the thickness direction, extends obliquely from the outer rear side to the inner front side. Specifically, referring to... Figure 2 In this embodiment, the shape of the rebound block 200 on the projection plane perpendicular to the thickness direction is defined by the inner section 201, the front convex section 202, the first transition section 203, the outer section 204, the rear convex section 205, and the second transition section 206 connected end to end; the inner section 201 extends from back to front and adapts to the shape change of the inner edge of the midsole base 100; the front convex section 202 connects with the front end of the inner section 201 and extends forward and then bends outward and backward; the first transition section 203... The outer section 204 connects to the outer end of the front convex section 202 and extends smoothly outward and backward; the outer section 204 connects to the outer section of the first transition section 203 and extends backward, and its shape is adapted to the outer edge shape of the midsole base 100; the rear convex section 205 connects to the rear end of the outer section 204 and extends backward and then bends and extends inward and forward; the second transition section 206 connects to the inner end of the rear convex section 205 and extends smoothly outward and backward, then bends forward and connects to the rear end of the inner section 201.

[0036] Specifically, the inner segment 201 of the rebound block 200 is close to the inner edge of the midsole base 100, and the outer end of the rebound block 200 is close to the outer edge of the midsole base 100. That is, the inner segment 201 is a section close to the inner edge of the midsole base 100, and the outer end is a section close to the outer edge of the midsole base 100. The inner end of the forward-protruding segment 202 connects to the front end of the inner segment 201, and the outer end connects to the inner end of the first transition segment 203. The forward end of the forward-protruding segment 202 is higher than the front end of the inner segment 201 and the inner end of the first transition segment 203, thus forming a shape that protrudes forward relative to the first transition segment 203. The first transition segment 203 smoothly transitions backward and outward, and the outer segment 204 extends smoothly backward after connecting with the first transition segment 203. The outer end of the rear convex segment 205 connects to the rear end of the inner segment 201, and the inner end connects to the outer end of the second transition segment 206. The rear convex segment 205 forms a shape that protrudes rearward relative to the second transition segment 206. The second transition segment 206 extends smoothly and bends to the rear end of the inner segment 201.

[0037] Specifically, the forward convex segment 202 of the rebound block 200 is positioned to correspond with the big toe, and the rear convex segment 205 is positioned to correspond with the metatarsophalangeal joint of the little toe. This correspondence refers to the vertical alignment and coverage of the sole components with the anatomical structure of the human foot in the thickness direction under normal wearing conditions (or based on a standard shoe last design). Specifically, when the wearer wears the shoe, the forward convex segment 202 of the rebound block 200 is located directly below the big toe (i.e., the distal end of the first metatarsal bone), and its contour is sufficient to cover the pressure center of the big toe during the push-off action, thus ensuring that the downward pressure applied by the big toe during the final stage of takeoff directly acts on this high-rebound area; while the rear convex segment 205 is located directly below the fifth metatarsophalangeal joint (i.e., the joint at the base of the little toe), thus covering the initial force point on the outer side of the forefoot.

[0038] Reference Figure 1 and Figure 2The cushioning block 300 is fitted into the second groove 120, with its upper surface flush with the upper surface of the midsole. The shock absorption G-value of the cushioning block 300 is less than that of the midsole substrate 100. Specifically, the cushioning block 300 is preferably manufactured integrally from thermoplastic polyurethane or other polymer elastomers using a 3D printing process (e.g., selective laser sintering (SLS) or photopolymerization (DLP)). Its internal structure exhibits a three-dimensional lattice structure composed of interconnected skeletal units. This lattice structure has a high porosity (between 60% and 80%), making the cushioning block 300 structurally flexible in its physical properties. When the heel lands on the ground, the three-dimensional lattice structure undergoes significant adaptive collapse and bending deformation, thereby prolonging the impact time and effectively dissipating kinetic energy. Of course, the cushioning block 300 can also be made of foam material, as long as the shock absorption G-value of the foam material meets the above requirements. Preferably, the damping G-value of the damping block 300 is between 7.5 and 8.

[0039] Furthermore, the cushioning block 300 has an elliptical shape on its projection plane perpendicular to the thickness direction. The position of the cushioning block 300 is also adapted to correspond to the central region of the calcaneal tuberosity. The short axis of the elliptical shape formed by the cushioning block 300 is along the width direction of the sole, and the long axis is along the length direction of the sole. This arrangement of the long axis along the length direction of the sole conforms to the rolling direction of the foot when it lands, extending the effective travel of the cushioning effect. The correspondence between the cushioning block 300 and the central region of the calcaneal tuberosity means that when the wearer is standing or performing a landing motion, the geometric center of the cushioning block 300 approximately coincides with the center of force on the lower surface of the calcaneus, i.e., the vertical projection point of the calcaneal tuberosity.

[0040] Both the rebound block 200 and the cushioning block 300 have a uniform thickness. Furthermore, the thickness of the cushioning block 300 is greater than that of the rebound block 200. Specifically, depending on the thickness of different shoe sizes, the thickness of the rebound block 200 can be set between 6.0mm and 7.5mm, while the thickness of the cushioning block 300 can be set between 7.5mm and 9.0mm.

[0041] This embodiment relates to a shoe sole with forefoot rebound and heel cushioning. The sole includes a midsole base 100, a rebound block 200, and a cushioning block 300. The forefoot portion 101 and the heel portion 103 of the midsole base 100 are respectively recessed with a first groove 110 and a second groove 120. The rebound block 200 and the cushioning block 300 are respectively fitted into the first groove 110 and the second groove 120. This structure uses the midsole base 100 as a unified load-bearing frame, and adds the rebound function and the cushioning function to the forefoot portion 101 and the heel portion 103, respectively. Due to the physical properties of the rebound block 200 and the cushioning block 300, the force exerted by the forefoot when pushing off the ground can directly act on the rebound block 200, and the impact of the heel landing can directly act on the cushioning block 300, while there is no interference between them. Moreover, the structure is simple and easy to manufacture. The key to this solution lies in fitting the rebound block 200 and the cushioning block 300 into the first groove 110 and the second groove 120 in a shape-fitting manner. The purpose of this shape fit is that, for the rebound block 200, since the rebound block 200 has a higher vertical rebound rate than the midsole substrate 100, when the forefoot pushes off the ground, the sidewall of the first groove 110 of the midsole substrate 100 forms a confining constraint on the rebound block 200 embedded therein, limiting the excessive lateral expansion of the rebound material under pressure. This lateral constraint forces more of the material's deformation energy to be converted into vertical rebound kinetic energy, thereby significantly improving the energy feedback efficiency of the forefoot during the take-off phase without changing the overall hardness of the sole. As for the cushioning block 300, the relatively hard midsole substrate 100 around it forms a rigid boundary. At the moment the foot touches the ground, the cushioning block 300 deforms to absorb the impact energy, while the surrounding midsole substrate 100 limits the excessive collapse of the cushioning block 300, providing the necessary structural support. Therefore, this solution embeds a rebound block 200 and a shock-absorbing block 300 into the midsole substrate 100, and utilizes the positioning and confining effect of the groove to achieve independent operation of the high rebound function of the forefoot and the high cushioning function of the heel. The overall structure is simple and directly targets the forefoot and heel areas of the foot, making it highly targeted.

[0042] As one aspect of this embodiment, the rebound block 200 adopts a shape that extends obliquely from the outer rear side to the inner front side on the projection surface. This shape is roughly the same as the layout structure of the metatarsophalangeal joint of the human foot, which can adapt to the bending of the forefoot of the human foot, so that the rebound block 200 can better fit the shape change of the forefoot of the human foot, thereby enabling the human foot to always receive energy feedback from the rebound block 200.

[0043] As one aspect of this embodiment, the specific shape of the rebound block 200 is defined. Compared with a simple rectangle or circle, this multi-segment irregular shape can minimize the stress concentration at the interface between the rebound block 200 and the midsole substrate 100, and can better adapt to the shape changes of the forefoot of the human foot, ensuring flexible bending of the forefoot while providing a large area of ​​rebound support.

[0044] As one aspect of this embodiment, the forefoot protrusion 202 corresponds to the big toe and the posterior protrusion 205 corresponds to the metatarsophalangeal joint of the little finger, ensuring that the rebound function covers the main force-generating area of ​​the forefoot and avoids other areas, so as to prevent the rebound function from interfering with the support function of the midsole base 100.

[0045] As one aspect of this embodiment, the inner section 201 and the outer end of the rebound block 200 are close to the edge of the midsole base 100, ensuring the lateral coverage of the rebound block 200. Even when the foot is tilted significantly or exerts force laterally, the point of force is still within the coverage of the rebound block 200, avoiding the response lag that occurs in the edge area due to being filled only by the midsole base 100.

[0046] As one aspect of this embodiment, the shock absorber 300 adopts an elliptical design. Compared to a polygonal structure, its rounded edge contour eliminates stress concentration points at the corners. The elliptical interface can more evenly transfer impact stress to the surrounding midsole substrate 100, reducing the risk of cracking of the midsole substrate 100 due to excessive local shear force.

[0047] As one aspect of this embodiment, the position of the shock absorber 300 is aligned with the central region of the calcaneal tuberosity, which enables direct energy absorption at the main pressure points and improves the shock absorption effect of the shock absorber 300.

[0048] As one aspect of this embodiment, the rebound block 200 and the damping block 300 each maintain a uniform thickness. The uniform thickness ensures that the rebound block 200 and the damping block 300 are uniformly compressed at all positions when compressed, avoiding local bottoming out or uneven rebound response caused by gradual thickness changes.

[0049] As one aspect of this embodiment, the thickness of the shock absorber 300 is set to be greater than the thickness of the rebound block 200. The thicker shock absorber 300 provides sufficient deformation space to prevent instantaneous bottoming out, while the thinner rebound block 200 reduces the ineffective stroke required for compression deformation, enabling athletes to more quickly perceive ground feedback and complete the start.

[0050] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A shoe sole with forefoot rebound and heel cushioning, characterized in that it comprises: The midsole base (100) is defined from front to back as a forefoot part (101), an arch part (102) and a heel part (103) corresponding to the human foot; the midsole base (100) has a first groove (110) recessed in its forefoot part (101) and a second groove (120) recessed in its heel part (103); A spring block (200) is fitted into the first groove (110) in a shape that fits the shape, and its upper surface is flush with the upper surface of the midsole substrate (100); the vertical rebound rate of the spring block (200) is greater than that of the midsole substrate (100). A shock absorber (300) is fitted into the second groove (120) in a shape that fits the shape, and its upper surface is flush with the upper surface of the midsole; the shock absorption G value of the shock absorber (300) is less than the shock absorption G value of the midsole substrate (100).

2. The shoe sole with forefoot rebound and heel cushioning as described in claim 1, characterized in that, The shape of the rebound block (200) on the projection plane perpendicular to the thickness direction is inclined from the outer rear side to the inner front side.

3. The shoe sole with forefoot rebound and heel cushioning as described in claim 2, characterized in that, The shape of the rebound block (200) on the projection plane perpendicular to the thickness direction is defined by the inner section (201), the front convex section (202), the first transition section (203), the outer section (204), the rear convex section (205), and the second transition section (206) connected end to end; the inner section (201) extends from back to front and adapts to the shape change of the inner edge of the midsole base (100); the front convex section (202) connects with the front end of the inner section (201) and extends forward and then bends outward and backward; the first transition section (203) connects with ... shape of the rebound block (204) on the projection plane perpendicular to the thickness direction is defined by the inner section (201), the front convex section (202), the first transition section (203), the outer section (204), the rear convex section (205), and the second transition section (206). The outer end of the front convex segment (202) is connected and extends smoothly outward and backward; the outer segment (204) is connected to the outer segment of the first transition segment (203) and extends backward, and its shape is adapted to the outer edge shape of the midsole base (100); the rear convex segment (205) is connected to the rear end of the outer segment (204) and extends backward and then bends inward and forward; the second transition segment (206) is connected to the inner end of the rear convex segment (205) and extends smoothly inward and backward, then bends forward and connects to the rear end of the inner segment (201).

4. The shoe sole with forefoot rebound and heel cushioning as described in claim 3, characterized in that, The position of the forward convex segment (202) in the rebound block (200) is adapted to correspond to the thumb of the foot, and the position of the rear convex segment (205) is adapted to correspond to the metatarsophalangeal joint of the little toe of the foot.

5. The shoe sole with forefoot rebound and heel cushioning as described in claim 4, characterized in that, The inner section (201) of the rebound block (200) is close to the inner edge of the midsole base (100), and the outer end of the rebound block (200) is close to the outer edge of the midsole base (100).

6. The shoe sole with forefoot rebound and heel cushioning as described in claim 1, characterized in that, The damping block (300) has an elliptical shape on the projection plane perpendicular to the thickness direction.

7. The shoe sole with forefoot rebound and heel cushioning as described in claim 6, characterized in that, The position of the shock absorber (300) is adapted to correspond to the central region of the calcaneal tuberosity of the foot.

8. The shoe sole with forefoot rebound and heel cushioning as described in claim 1, characterized in that, The thickness of the rebound block (200) and the damping block (300) is uniform.

9. The shoe sole with forefoot rebound and heel cushioning as described in claim 8, characterized in that, The thickness of the damping block (300) is greater than the thickness of the rebound block (200).

10. A shoe comprising an upper, characterized in that, It also includes a forefoot rebound and heel cushioning sole as described in any one of claims 1-9, wherein the upper is attached to the sole.