Sole component and sports shoe for high-intensity running

Abstract

The present application provides a sole component and sports shoe for high-intensity running, the sole component comprising an upper midsole and a lower midsole, wherein a 3D full-length carbon plate is wrapped between the upper and lower midsoles to form a midsole; the 3D full-length carbon plate is a rigid plate covering the sole of the foot, formed by longitudinally connecting a forefoot section and a heel section, the forefoot section extending curvature from the corresponding toe to the front end of the arch of the foot, the heel section extending from the corresponding heel toward the forefoot section, the forefoot section and / or the heel section having a lateral inclination; the upper and lower midsoles are both elastic nylon foam components. The sole component and sports shoe, when used as a marathon running shoe, can achieve excellent propulsion and acceleration effects, making it easier for runners to experience a sense of control and improving individual performance.

Description

Technical Field

[0001] The present application belongs to the technical field of footwear products, and in particular relates to a sole component and sports shoes for high-intensity running. Background Art

[0002] Currently, more and more carbon plate running shoes are appearing on the market for high-intensity racing shoes such as marathons. Based on the rigidity, shape, position and size of the carbon plate, they can be divided into three categories: propulsion type, adjustment type and support type.

[0003] Among them, propulsion-type carbon plate running shoes have very high requirements for "structural design" and "midsole performance." Through the midsole material and the full-length carbon plate's warping guidance, they can achieve a certain acceleration effect. Adjustable carbon plates are often constructed in "X," "Y," or "8" shapes, strengthening the cross-center support while extending the carbon fiber structure. This extension not only allows the center of the carbon plate to provide arch support, but also controls foot deformation during exercise, maintaining dynamic stability through the carbon plate's balance of rigidity and elasticity. The value of carbon fiber in support-type carbon plate running shoes is primarily reflected in two aspects: arch support and control of the optimal bending point; however, the carbon plate is only placed at the waist of the sole for support.

[0004] For the existing propulsion-type carbon plate running shoe soles, since the carbon plates therein cannot fully conform to the natural transition of sports force, etc., the propulsion and acceleration functions need to be improved. Summary of the Invention

[0005] In view of this, the present application provides a sole component and sports shoes for high-intensity running, which can be used as marathon running shoes, etc., to achieve good propulsion and acceleration effects, which will make it easier for runners to experience the sense of control and improve the athlete's personal performance.

[0006] The present application provides a sole component for high-intensity running, comprising an upper midsole and a lower midsole, wherein a 3D full-length carbon plate is wrapped between the upper midsole and the lower midsole to form the midsole;

[0007] The 3D full-length carbon plate is a rigid plate covering the sole of the foot, formed by longitudinally connecting a forefoot section and a heel section. The forefoot section extends curvilinearly from the corresponding toe to the front end of the arch of the foot, and the heel section extends from the corresponding heel to the forefoot section. The forefoot section and / or the heel section have an inclination angle in the lateral direction.

[0008] The upper midsole and the lower midsole are both elastic nylon foam components.

[0009] Preferably, the maximum thickness of the forefoot of the midsole is 18-26 mm.

[0010] Preferably, the difference in maximum front-to-back thickness of the midsole is 5-7 mm.

[0011] Preferably, the thickness of the inner waist of the forefoot of the upper midsole is greater than the thickness of the outer waist thereof.

[0012] Preferably, the difference in thickness between the inner and outer waists of the forefoot of the upper midsole is 3-4 mm.

[0013] Preferably, the upper midsole and the lower midsole are both elastic nylon foam components made by supercritical foaming.

[0014] Preferably, the resilience of the elastic nylon foam component is greater than 50%.

[0015] Preferably, with the ground as a reference, the inclination angles of the lateral inclined portions of the forefoot section and / or the heel section of the 3D full-palm carbon plate independently do not exceed 10°.

[0016] Preferably, the sole component further comprises a non-slip PU outsole compounded on the lower surface of the lower midsole.

[0017] The present application provides a sports shoe for high-intensity running, comprising the sole component described above.

[0018] Compared with the prior art, the sole component provided by the present application is mainly composed of two layers of elastic nylon foam midsoles and a 3D rigid carbon plate therebetween. The forefoot section and / or heel section of the 3D carbon plate have an inclined angle in the lateral direction. In the present application, its superior performance is firstly reflected in the superior rebound and compression resistance of the midsole, as well as the lightweight density, which makes it more comfortable and easy for athletes to wear. Secondly, the high-strength full-palm 3D carbon plate used in the present application can ensure the natural transition of foot shape changes during exercise, and reduce energy consumption during bending during exercise, thereby improving energy efficiency.

[0019] Furthermore, the present application also includes a wear-resistant and anti-slip PU outsole, which also reduces the injuries caused to athletes during running due to slippery roads.

[0020] The shoes comprising the above-mentioned sole components of the present application can be used as marathon running shoes, which can achieve good propulsion and speed-up effects, making it easier for runners to experience a sense of control and improve the athletes' PB. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the structural decomposition of the sole components provided by some embodiments of the present application;

[0022] Figure 2 Schematic diagram of the general structure of the rigid component in the embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the rigid component provided by the first embodiment of the present application;

[0024] Figure 4 yes Figure 3 A schematic diagram of the top view of the structural markings of the rigid component shown;

[0025] Figure 5 yes Figure 3 a schematic side view of the rigid component shown in profile;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the rigid component provided by the second embodiment of the present application;

[0027] Figure 7 yes Figure 6 A schematic diagram of the top view structure and rear side view outline of the rigid component shown;

[0028] Figure 8 yes Figure 6 A schematic diagram of the laterally inclined portion of the rigid component shown;

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the rigid component provided by the third embodiment of the present application;

[0030] Figure 10 yes Figure 9 A schematic diagram of the top view structure and rear side view outline of the rigid component shown;

[0031] Figure 11 is a schematic diagram of the three-dimensional structure of the rigid component provided by the fourth embodiment of the present application;

[0032] Figure 12 yes Figure 11 A schematic diagram of the top view structure and rear side view outline of the rigid component shown;

[0033] Figure 13 is a schematic diagram of the three-dimensional structure of the rigid component provided in the fifth embodiment of the present application;

[0034] Figure 14 yes Figure 13 a schematic side profile view of the rigid component shown;

[0035] Figure 15 is a schematic diagram of the three-dimensional structure of the rigid component provided in the sixth embodiment of the present application;

[0036] Figure 16 is a schematic diagram of the three-dimensional structure of the rigid component provided in the seventh embodiment of the present application;

[0037] Figure 17 yes Figure 16 A schematic diagram of the top view of the structural markings of the rigid component shown;

[0038] Figure 18is a schematic diagram of the three-dimensional structure of the rigid component provided in the eighth embodiment of the present application;

[0039] Figure 19 is a side view of a sole component provided by a preferred embodiment of the present application;

[0040] Figure 20 This is a rear view of the sole component provided by the preferred embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will be combined with the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] The present application provides a sole component for high-intensity running, comprising an upper midsole and a lower midsole, wherein a 3D full-length carbon plate is wrapped between the upper midsole and the lower midsole to form the midsole;

[0043] The 3D full-length carbon plate is a rigid plate covering the sole of the foot, formed by longitudinally connecting a forefoot section and a heel section. The forefoot section extends curvilinearly from the corresponding toe to the front end of the arch of the foot, and the heel section extends from the corresponding heel to the forefoot section. The forefoot section and / or the heel section have an inclination angle in the lateral direction.

[0044] The upper midsole and the lower midsole are both elastic nylon foam components.

[0045] The sole component provided in this application is mainly used for shoes for high-intensity running such as marathons, and can achieve good propulsion and speed-up effects.

[0046] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of the sole components provided in some embodiments of the present application. This figure uses the right foot as an example (left and right feet are symmetrical). The midsole of the sole component is constructed by bonding an upper midsole A1, a 3D full-length carbon plate B, and a lower midsole A2. The preferred outsole C adopts a split-piece design, divided into forefoot and heel areas, with the heel area divided into medial and lateral sections.

[0047] The midsole is the middle main part of the sole, and its main function is to provide shock-absorbing protection for the foot. The midsole described in the embodiment of the present application adopts a two-layer structural design, namely, an upper midsole A1 and a lower midsole A2. When in use, the upper surface of the upper midsole A1 is close to the foot, and the lower surface of the lower midsole A2 is close to the ground; the side of the midsole is a side wall, which is divided into inner and outer sides corresponding to the foot. The contour shapes of the upper midsole and the lower midsole are basically the same, and the surfaces can cover the projection of the sole of the foot; the upper midsole and the lower midsole are correspondingly divided into the forefoot, the arch of the foot (mid-waist) and the heel. In addition, the two layers are integral sheet structures, bonded together by the edges; both are elastic nylon foam components.

[0048] In the embodiments of the present application, the elastic nylon foam component has a rebound rate greater than 50%, preferably greater than 60%, making it a highly elastic component. The midsole, composed of the upper midsole A1 and the lower midsole A2, has excellent rebound and compression resistance, and a relatively low density, making it more comfortable and relaxing for athletes to wear.

[0049] The two-layer midsole described in the embodiment of the present application is preferably produced by supercritical physical foaming of a highly elastic nylon modified material, that is, the upper midsole and the lower midsole are both elastic nylon foam components made by supercritical foaming.

[0050] Specifically, the nylon modified material includes: SEBS 16-18PHR; ethylene-vinyl acetate copolymer 45-55PHR; polyolefin elastomer 18-22PHR; polyamide thermoplastic elastomer 10-42PHR; graft modifier 2-3PHR; vulcanizer 0.7PHR; magnesium carbonate 2-3PHR; antioxidant 0.1-0.2PHR; the graft modifier is SEBS grafted with maleic anhydride.

[0051] The examples herein do not specifically limit the sources of all raw materials; they can be commercially available. PHR generally refers to the additive content per hundred parts of rubber, or the percentage of additives in rubber (or resin). SEBS is a linear triblock copolymer primarily composed of polystyrene as the terminal segments and an ethylene-butene copolymer derived from hydrogenated polybutadiene as the central elastomeric block.

[0052] In the embodiments of the present application, the mass content of styrene in the SEBS is preferably 30% to 35%, more preferably 31% to 34%, and even more preferably 33%; the hardness of the SEBS is preferably 70 to 80, more preferably 72 to 78, even more preferably 74 to 78, and most preferably 76; the SEBS described in the present application is most preferably the Kraton 1651 product.

[0053] The mass content of vinyl acetate in the ethylene-vinyl acetate copolymer (EVA) is preferably 25% to 35%, more preferably 26% to 32%, more preferably 26% to 30%, and most preferably 28%; the 200°C / 5kg melt index of the ethylene-vinyl acetate copolymer is preferably 20 to 30 g / 10 min, more preferably 22 to 28 g / 10 min, more preferably 24 to 26 g / 10 min, and most preferably 25 g / 10 min; in the present application, the EVA is most preferably Formosa Plastics 7760H product.

[0054] The polyolefin elastomer is preferably a copolymer of ethylene and octene; the polyolefin elastomer has a 200°C / 5kg melt index of preferably 1 to 1.5 g / 10 min, more preferably 1.1 to 1.3 g / 10 min, and even more preferably 1.2 g / 10 min; in the present application, the polyolefin elastomer is most preferably Mitsui DF810 product.

[0055] The polyamide thermoplastic elastomer is preferably a block copolymer elastomer composed of a polyamide (PA) hard segment and a polyether soft segment; wherein the polyamide hard segment is preferably one or more of PA6, PA610, PA612, PA11, and PA12; and the polyether soft segment is preferably one or more of polyethylene glycol (PEG), polypropylene glycol (PPG), and polytetramethylene glycol (PTMG). Furthermore, the molar ratio of the polyamide hard segment to the polyether soft segment is preferably (60-80):(40-20), more preferably (65-75):(35-25), and most preferably 70:30. The content of the polyamide thermoplastic elastomer in the midsole material provided herein is preferably 11-40 parts by weight, more preferably 11-35 parts by weight.

[0056] The graft modifier is maleic anhydride-grafted SEBS, wherein the maleic anhydride grafting rate is preferably 1% to 5%, more preferably 1% to 3%, more preferably 1.5% to 2%, and most preferably 1.5%; the styrene content in the graft modifier is preferably 25% to 35%, more preferably 28% to 32%, and more preferably 30%. The graft modifier has a melt index of 230°C / 5kg of 20 to 25 g / 10min, more preferably 21 to 24 g / 10min, more preferably 22 to 23 g / 10min, and most preferably 22 g / 10min.

[0057] The vulcanizing agent is preferably 1,4-di-tert-butyl diisopropylbenzene peroxide; and the antioxidant is preferably antioxidant 1076 and / or antioxidant 246.

[0058] The embodiments of the present application select specific raw materials and specific proportions, and use a foaming process to obtain a midsole material having low density while also having excellent rebound performance.

[0059] The present application also provides a method for preparing the above-mentioned midsole material, which specifically includes:

[0060] S1) extruding and granulating the polyamide thermoplastic elastomer to obtain elastomer particles;

[0061] S2) extruding and granulating the elastomer particles, SEBS, ethylene-vinyl acetate copolymer and polyolefin elastomer to obtain plastic pellets;

[0062] S3) mixing the plastic material graft modifier, the vulcanizing agent, the magnesium carbonate and the antioxidant to obtain a rubber material;

[0063] S4) extruding and granulating the rubber material to obtain rubber pellets;

[0064] S5) the granules are vulcanized by injection molding to obtain a sub-blank mold;

[0065] S6) subjecting the sub-blank mold to physical foaming by autoclave pressing to obtain a midsole material.

[0066] Alternatively, the rubber particles are mixed with a foaming agent and extruded for foaming to obtain foamed rubber particles;

[0067] The foamed rubber particles are subjected to injection molding and vulcanization to obtain a midsole material.

[0068] The SEBS, ethylene-vinyl acetate copolymer, polyolefin elastomer, polyamide thermoplastic elastomer, graft modifier, vulcanizing agent, magnesium carbonate and antioxidant are the same as those described above and will not be described in detail here.

[0069] In the present embodiment, the polyamide thermoplastic elastomer is extruded and granulated to obtain elastomer particles. The extrusion granulation temperature is preferably 180°C to 210°C; the extrusion granulation speed is preferably 100 to 180 rpm, more preferably 100 to 120 rpm.

[0070] In this embodiment of the present application, the elastomer particles, SEBS, ethylene-vinyl acetate copolymer, and polyolefin elastomer are extruded and granulated to produce plastic pellets. The extrusion granulation temperature is preferably 170°C to 190°C; the extrusion granulation speed is preferably 100 to 120 rpm. Performing a two-stage extrusion granulation process before mixing can reduce the melt index of the rubber material, thereby enabling injection molding.

[0071] In the embodiment of the present application, plastic particles, a grafting modifier, a vulcanizing agent, magnesium carbonate and an antioxidant are mixed to obtain a rubber compound. In the present application, it is preferred to first mix the plastic particles, the grafting modifier, magnesium carbonate and the antioxidant for a first time, and then add the vulcanizing agent for a second mixing to obtain the rubber compound. The temperature of the first mixing is preferably 92°C to 98°C; the time of the first mixing is preferably 5 to 10 minutes, more preferably 6 to 8 minutes, and more preferably 7 minutes. The temperature of the second mixing is preferably 102°C to 123°C; the time of the second mixing is preferably 3 to 8 minutes, more preferably 4 to 6 minutes, and more preferably 5.5 minutes. In the present application, the second mixing is preferably carried out in three steps of heating, the temperature of the first mixing step is preferably 102°C to 108°C; the time of the first mixing step is preferably 1 to 3 minutes, more preferably 2 minutes; the temperature of the second mixing step is preferably 112°C to 118°C; the time of the second mixing step is preferably 1 to 3 minutes, more preferably 2 minutes; the temperature of the third mixing step is preferably 117°C to 123°C; the time of the third mixing step is preferably 1 to 2 minutes, more preferably 1.5 minutes; the thickness of the rubber compound is preferably 2 to 4 mm.

[0072] According to the embodiments of the present application, the rubber compound is preferably subjected to a thinning treatment and then extruded and granulated to obtain rubber pellets. The temperature of the thinning treatment is preferably 60°C to 80°C; the thinning thickness of the thinning treatment is preferably controlled within 1 to 1.5 mm; the maximum value of the transverse pressure during the thinning treatment is 5 to 10° of the clamping arc; the thinning treatment can fully mix and melt the low-melting-point materials in the rubber compound. The die head temperature of the extrusion equipment used for the extrusion granulation is preferably 80°C to 100°C; the temperature of the screw is preferably 85°C to 90°C; the temperature of screw section 1 is preferably 85°C, the temperature of screw section 2 is preferably 85°C, and the temperature of screw section 3 is preferably 90°C.

[0073] In the embodiment of the present application, the pellets are injection molded and vulcanized to obtain a sub-mold. The temperature of the material pipe during the injection molding is preferably 80°C to 95°C; the material pipe is preferably divided into four sections, the temperature of the first section is preferably 80°C to 90°C, the temperature of the second section is preferably 80°C to 90°C, the temperature of the third section is preferably 80°C to 90°C, and the temperature of the fourth section is preferably 85°C to 95°C; the injection molding speed is preferably 28 to 36 cm / s. In the present application, the injection molding is preferably multi-stage injection molding, the injection speed of the first stage is preferably 34-36 cm / s, more preferably 36 cm / s, the injection speed of the second stage is preferably 32-34 cm / s, more preferably 34 cm / s, the injection speed of the third stage is preferably 30-32 cm / s, more preferably 32 cm / s, the injection speed of the fourth stage is preferably 28-30 cm / s, more preferably 30 cm / s, and the injection speed of the fifth stage is preferably 28-30 cm / s, more preferably 38 cm / s.

[0074] The vacuuming time during the injection molding is preferably 50 to 70 seconds, more preferably 55 to 65 seconds, and more preferably 57 to 63 seconds; the injection pressure during the injection molding is preferably 90 to 110 bar, more preferably 95 to 105 bar; the mixing time during the injection molding is preferably more than 60 minutes; the mold temperature during the injection molding is preferably 170°C to 180°C, more preferably 172°C to 178°C; the mass ratio of the release agent to water during the injection molding is preferably 1:(90 to 100), more preferably 1:(95 to 105), and more preferably 1:100; the mold opening speed during the injection molding is preferably 80%; the vulcanization time is preferably 250 to 350 seconds, more preferably 270 to 320 seconds, and more preferably 290 to 310 seconds.

[0075] According to an embodiment of the present application, the sub-blank mold is subjected to autoclave pressure physical foaming; the foaming agent of the autoclave pressure physical foaming is preferably a supercritical gas. The supercritical gas is preferably carbon dioxide and nitrogen; the volume ratio of carbon dioxide to nitrogen is preferably (1-3): (9-7), more preferably 2:8. The temperature of the autoclave pressure physical foaming is preferably 170°C to 180°C; the equipment pressure of the autoclave pressure physical foaming is preferably 25-30MPa, more preferably 26-28MPa, and more preferably 27MPa; the autoclave pressure physical foaming time is preferably 200-400s, more preferably 250-350s, and more preferably 300s; the autoclave pressure physical foaming ratio is preferably 1.5-3, more preferably 2-2.5, and more preferably 2.

[0076] In the embodiments of the present application, after autoclave physical foaming, secondary compression vulcanization is preferably performed to obtain the midsole material. The temperature of the secondary compression vulcanization is preferably 170°C to 180°C, more preferably 172°C to 178°C; the time of the secondary compression vulcanization is preferably 400 to 600 seconds, more preferably 450 to 550 seconds, and even more preferably 500 seconds; and the cooling time of the secondary compression vulcanization is preferably 400 to 600 seconds, more preferably 450 to 550 seconds, and even more preferably 500 seconds.

[0077] This embodiment of the present application utilizes the aforementioned modified nylon material as raw material, which is directly injected into a sub-mold. This sub-mold is then foamed directly using a kettle-pressed physical foaming process, seamlessly integrating the material with the production process to create a high-performance modified nylon supercritical foamed midsole material, namely the aforementioned upper midsole A1 and lower midsole A2. Furthermore, this embodiment of the present application achieves foaming by adjusting the tank inflation ratio and type of inflation, thus avoiding waste of raw materials and achieving a breakthrough in process to fully utilize the material.

[0078] In this embodiment of the present application, a push-type 3D full-length carbon plate B is wrapped between the upper midsole A1 and the lower midsole A2 of the sole component, together forming the midsole. The 3D full-length carbon plate is a rigid plate covering the sole of the foot, formed by longitudinally connecting a forefoot section and a heel section. The forefoot section extends curvilinearly from the corresponding toe to the front end of the arch of the foot, and the heel section extends from the corresponding heel to the forefoot section. The forefoot section and / or the heel section have a lateral inclination angle.

[0079] This application applies the high-strength full-palm 3D carbon plate (application patent number: CN202010731045.1), which can ensure the natural transition of foot shape changes during exercise, and reduce energy consumption during bending during exercise, thereby improving energy efficiency.

[0080] See also Figure 2 , Figure 2 This is a schematic diagram of the general structure of the 3D full-palm carbon plate (referred to as the rigid component) in the embodiment of the present application. The rigid component described in the embodiment of the present application is a component used in the sole. According to the position of the corresponding foot, it can be divided into a forefoot section 1 and a heel section 2. The two are longitudinally connected to form a rigid plate-like structure that covers the sole of the foot as a whole. Its surface shape is basically the same as the shape of the sole of the foot. The rigid component has high rigidity and high toughness. Its main manufacturing material is carbon fiber (carbon fiber). That is, the rigid component is made of carbon fiber and can be called a carbon sheet or carbon plate.

[0081] Some embodiments of this application utilize thermoplastic carbon sheeting. The preparation method involves CNC-cutting a 1-2 mm thick carbon sheet into smaller pieces (the current example uses 1.2 mm thickness), heating and pre-pressing the sheet, placing it in a mold for a second preheating and pressurization, and finally trimming and cleaning. The rigidity performance tests for the rigid components include static stiffness testing and a 5 mm strain test. The stress in the forefoot is typically 0.3-0.5 kN, the mid-waist stress is 0.2-0.3 kN, and the heel stress is 0.2-0.3 kN.

[0082] Taking the horizontal plane of the ground as a reference, the 3D full-palm carbon plate is a "spoon-shaped" three-dimensional structure with a low front and a high back. Among them, the forefoot segment 1 is a region that extends longitudinally from the corresponding toe to the front end of the arch with a curvature, and the projected contour shape corresponds to the projected contour of the forefoot; it can be further divided into the corresponding toe area (part) and the corresponding metatarsal area. The front end of the corresponding toe area is the front end of the rigid component, the side corresponding to the big toe is the inner side, and the side corresponding to the little toe is the outer side; and the end of the corresponding metatarsal area corresponds to the front end of the arch and has a smaller width. The front end line of the forefoot segment corresponding to the toe part can be a straight line or a curve (including a circular arc or a curved line that conforms to the contour of the toe). The forefoot segment extends longitudinally in an arc shape, and the curvatures of the corresponding toe area and the corresponding metatarsal area can be consistent or slightly different.

[0083] In addition, the 3D full-palm carbon plate heel segment 2 extends and connects from the corresponding heel to the forefoot segment 1, specifically extending longitudinally to the front end of the arch, including the corresponding heel area (position) and the corresponding arch area; the rearmost end of the corresponding heel area is the rearmost end of the 3D full-palm carbon plate rigid component, and the corresponding arch area is the connecting part between the heel segment and the forefoot segment.

[0084] In some embodiments of the present application, the forefoot section of the 3D full-palm carbon plate has a certain tilt angle in the lateral direction, while the heel section can be horizontal or tilted in the lateral direction. Alternatively, in other embodiments, the forefoot section has no tilt in the lateral direction, while the heel section has a tilt angle in the lateral direction. The working principle of the 3D full-palm carbon plate of the present application is to design a stiffness component (rigid component) with a certain arc drop shape based on the force characteristics of the foot transition during racing running, so as to improve the transition efficiency of running.

[0085] For marathon runners, the running gait generally starts with the outside of the foot or forefoot first, followed by a slight heel push-off, and then a quick transition to the inside push-off. Most high-level runners, when running, start with the outside of the foot first and then quickly transition to the inside.

[0086] The applicant's research has shown that, in addition to requiring a rapid arc-shaped transition in the front-to-back direction, a rapid arc-shaped drop transition in the left-to-right direction is also required. This is primarily achieved through the lateral tilt drop stiffness of the 3D full-palm carbon plate rigid component described in this application. With the ground as a reference, the inclination angle of the lateral tilted portion of the forefoot section and / or the heel section of the 3D full-palm carbon plate independently does not exceed 10°, and the preferred inclination angle is between 5-10° (the inclination angle of the forefoot section or heel section can be 5-10° independently, or both can have a 5-10° lateral tilt). This inclination angle is, for example, 6-9°.

[0087] In the present application, the 3D full-palm carbon plate not only has a spoon-shaped structure in the front-to-back direction, but also has an inclined drop in the left-rear direction, and its shape can be varied in many ways; and, the entire rigid component can be designed in this way, or the heel can be horizontal in the left-to-right directions, with only the left-to-right direction of the forefoot being inclined.

[0088] In some embodiments of the present application, the heel section of the 3D full-length carbon fiber plate is horizontal, and the forefoot section has a transverse inclination angle; the transverse inclination portion may have no undulations between the left and right ends, that is, a smooth spoon shape or a sloped design (such as a longitudinal gradient segmented transition to the heel section). Alternatively, in other embodiments, the heel section is horizontal, and the forefoot section has a transverse inclination angle; the transverse inclination portion has a smooth undulating shape between the left and right ends, and the smooth undulating shape can extend along a straight line or a curve, for example, in at least one wave shape or S shape.

[0089] According to the different designs of the forefoot section and the heel section of the 3D full-palm carbon plate, the 3D full-palm carbon plate rigid component described in the embodiment of the present application has multiple design schemes including but not limited to the following schemes.

[0090] See also Figure 3-5 Taking the right foot as an example, the specific shape and structure of the 3D full-palm carbon plate rigid component described in the first embodiment of the present application is as follows: the rigid component is a spoon-shaped component with a low front and a high back. The heel section is tilted left and right, and the tilt angle can be between 5°-10°. In this embodiment, it is 6° outward tilt. The rear part of the forefoot section corresponding to the metatarsal area is a three-dimensional structure with a horizontal tilt. The tilt angle can be between 5°-10°. In this embodiment, it is 6°. The specific angle mark of the heel section is as follows: Figure 4 As shown. Furthermore, the transversely inclined portion of the forefoot section forms a wave shape in a horizontal direction; it can be higher on the inside and lower on the outside, which is more suitable for most runners' gaits, or lower on the inside and higher on the outside for runners with a pigeon-toed gait. Furthermore, the forefoot section's frontmost line is a curved line, with the end line corresponding to the big toe area forming a convex curve, gradually concave and curving from the frontmost line to the outside of the corresponding little toe.

[0091] In the above embodiment of the present application, for example, taking a US size 9 as an example, the maximum width of the forefoot section is 88.6mm; the minimum width from the front end of the forefoot section to the outside of the corresponding little toe is 39.0mm, and the length from the front end of the forefoot section to the top of the corresponding little toe is 15.7mm; the maximum width of the heel section at the heel is 41.0mm; and the length from the front end of the forefoot section to the end of the heel section is 247.0mm. Figure 3 In the middle and lower part, the heel section is tilted outward at 6°, and the forefoot section, corresponding to the posterior part of the metatarsal region, is tilted laterally at an angle of 6°. Figure 4 From a side view, the front end arc of the forefoot segment extends to the lowest point (located on the horizontal line, the same below), the angle between the extension line and the horizontal line is 18.54°, and the vertical distance from the front end of the forefoot segment to the horizontal line is 30.54mm; the length from the front end projection point of the forefoot segment to the lowest point is 89.13mm, and the length from the lowest point to the projection point of the end of the arch is 88.87mm. The length of the remaining part of the heel segment is 76.13mm, and the vertical distance from the end of the arch of the heel segment to the horizontal line is 14.03mm. The arc of the lowest point of the forefoot segment extends to the front end of the arch, and the angle between the extension line and the horizontal line is 8.61°.

[0092] See also Figure 6-7 Taking the right foot as an example, the specific shape and structure of the 3D full-length carbon plate rigid component described in the second embodiment of this application are as follows: the heel section is horizontal, without lateral inclination, and extends from the heel section to the forefoot section. In the forefoot section corresponding to the metatarsal area, this embodiment adopts a left-right wave-shaped inclination, with the specific inclination angle and other dimensions being the same as the above embodiment. The shape can be higher on the inside and lower on the outside, which is more suitable for most runners' gaits, or lower on the inside and higher on the outside for runners with a pigeon-toed gait. In addition, the front end line of the forefoot section is a straight line.

[0093] In such embodiments of the present application, Figure 7The A-A' and B-B' structural markings are shown. The length from the front end of the forefoot section to the end of the heel section is 253.36mm. In the B-B' section, the maximum height is 6.48mm, and the height after the lowest point (height 0) is 3.06mm. The horizontal section width at the maximum height is 32.14mm. From the side view of part A-A', the front end arc of the forefoot segment extends to the lowest point, the angle between the extension line and the horizontal line is 18.54°, and the vertical distance from the front end of the forefoot segment to the horizontal line is 30.54mm; the length from the front end projection point of the forefoot segment to the lowest point is 89.13mm, and the length from the lowest point to the projection point of the end of the arch is 88.87mm. The length of the remaining part of the heel segment is 76.13mm, and the vertical distance from the end of the arch of the heel segment to the horizontal line is 14.03mm. The arc of the lowest point of the forefoot segment extends to the front end of the arch, and the angle between the extension line and the horizontal line is 8.61°.

[0094] Figure 8 yes Figure 6 The schematic diagram of the lateral tilted part of the 3D full-palm carbon plate rigid component is shown. Figure 8 The middle arrow points to a WAVE wave-shaped inclined shape in the left and right directions of the forefoot section, which constitutes an anisotropic structure with an inclination difference in the rigid component described in this application. The drop angle here is 6°; after the rigid component of this structure is applied to the midsole, the all-round bending and flexing stiffness of the sole can be adjusted.

[0095] See also Figure 9-10 Taking the right foot as an example, the specific shape and structure of the 3D full-length carbon plate rigid component described in the third embodiment of this application is as follows: the heel section is horizontal and extends toward the forefoot section. In the forefoot section corresponding to the metatarsal area, this embodiment has an S-shaped tilted shape in the left and right directions. It can be designed to be higher on the inside and lower on the outside, or lower on the inside and higher on the outside. In addition, the front end line of the forefoot section is a straight line.

[0096] In such embodiments of the present application, Figure 10The A-A' and B-B' structural markings are shown, and the length from the front end of the forefoot segment to the end of the heel segment is 253.36mm. In the B-B' section, the maximum height is 4.77mm, and after passing the lowest point (height is 0), it is horizontal, and the length of this section is 24.98mm; the width of the horizontal section at the maximum height is 23.51mm. From the side view of the A-A' section, the arc line of the front end of the forefoot segment extends to the lowest point, and the angle between this extension line and the horizontal line is 18.97°, and the vertical distance from the front end of the forefoot segment to the horizontal line is 31.26mm; the length from the front end projection point of the forefoot segment to the lowest point is 89.13mm, and the length from the lowest point to the projection point of the end of the arch is 88.86mm. The length of the remaining part of the heel segment is 76.13mm, and the vertical distance from the end of the arch of the heel segment to the horizontal line is 14.89mm. The arc line of the lowest point of the forefoot segment extends to the front end of the arch, and the angle between this extension line and the horizontal line is 9.06°.

[0097] See also Figure 11-12 Taking the right foot as an example, the specific shape and structure of the 3D full-palm carbon plate rigid component described in the fourth embodiment of the present application is as follows: the heel section is horizontal and extends toward the forefoot section; in the main area of ​​the forefoot section (corresponding to the metatarsal area), this embodiment has an inclination angle with no undulations left and right, that is, the lateral direction is not in a horizontal plane, the inclination angle is between 5-10°, and the inclination angle is set to 6° in this embodiment; and the lateral inclination part is higher on the inside and lower on the outside, and of course it can also be designed to be lower on the inside and higher on the outside.

[0098] In such embodiments of the present application, Figure 12 The A-A' and B-B' structural markings are shown, and the length from the front end of the forefoot segment to the end of the heel segment is 253.36mm. In the B-B' part, the maximum height is 3.41mm, and then the slope drops to the lowest point at the other end (height is 0). From the side view of the A-A' part, the arc line of the front end of the forefoot segment extends to the lowest point, and the angle between the extension line and the horizontal line is 19.15°, and the vertical distance from the front end of the forefoot segment to the horizontal line is 32.25mm; the length from the front end projection point of the forefoot segment to the lowest point is 89.13mm, and the length from the lowest point to the projection point of the end of the arch is 88.87mm. The length of the remaining part of the heel segment is 76.13mm, and the vertical distance from the end of the arch of the heel segment to the horizontal line is 15.73mm. The arc line of the lowest point of the forefoot segment extends to the front end of the arch, and the angle between the extension line and the horizontal line is 9.22°.

[0099] In the first through fourth embodiments described above, the forefoot section of the 3D full-length carbon plate rigid component has a certain lateral inclination, resulting in a non-planar, three-dimensional structure. This inclination angle is designed primarily to increase left-right stiffness and enhance the transition effect during running. Furthermore, the present application may also incorporate other structural designs in the inclined or non-inclined areas of the forefoot section of the rigid component.

[0100] See also Figure 13-14 Taking the right foot as an example, the specific shape and structure of the 3D full-palm carbon plate rigid component described in the fifth embodiment of this application is as follows: in the main area of ​​the forefoot section (corresponding to the metatarsal area), this embodiment is an inclined angle with no fluctuations left and right; the heel section is horizontal and extends towards the forefoot section; the shape is not a smooth transition, but a segmented transition, preferably divided into four sections. Figure 14 As shown, the heel section transitions to the forefoot section in four broken lines: B1, B2, B3, and B4. It should be noted that the forefoot section can also be non-inclined while the heel section has a lateral inclination, or both the front and back sections can have lateral inclinations, combined with a gradient segmented transition design.

[0101] See also Figure 15 Taking the right foot as an example, the specific shape and structure of the 3D full-length carbon plate rigid component described in the sixth embodiment of this application is as follows: In the main area of ​​the forefoot section (corresponding to the metatarsal area), this embodiment adopts a tilt angle with no fluctuations from side to side; the heel section is horizontal and extends normally towards the forefoot section; the forefoot section has a cutout at the edge corresponding to the big toe, that is, there is a small toe-splitting design corresponding to the big toe area, and it is not a whole piece. Of course, the forefoot section can also be non-tilted, while the heel section has a lateral tilt, or both the front and back sections can have a lateral tilt and then combine it with a toe-splitting design.

[0102] The toe split can be located at the lateral position of the inner 1 / 3 to 1 / 2 of the forefoot segment. The length of the incision should not exceed the length of the big toe bone. Generally, the length of the toe split from the front end of the forefoot segment to the rear is between 30-50 mm, and the width of the incision should not exceed 4 mm, and can be specifically 3-4 mm. The main design principle of this embodiment is that the big toe area is the main force-bearing area during running. Separating the big toe area facilitates localized force generation, thereby improving running efficiency.

[0103] In other embodiments of the present application, the forefoot section of the 3D full-length carbon fiber plate is not laterally tilted, while the heel section is laterally tilted; the left and right sides of the laterally tilted portion are generally smooth and level. Preferably, the heel section of the embodiment of the present application has medial and lateral wings extending to the left and right sides of the laterally tilted portion, respectively.

[0104] See also Figure 16-17Taking the right foot as an example, the specific shape and structure of the 3D full-length carbon plate rigid component described in the seventh embodiment of this application is as follows: the heel section extends normally toward the forefoot section, which has a normal curved planar shape. The main difference lies in the heel section, which has a horizontal angle and also extends two side wings on either side of this area. The inner side wing is horizontal, while the outer side wing is curved and wraps upward. Both side wings are exposed on the side wall of the sole and visible from the outside of the shoe; alternatively, they can be embedded and not exposed. Moreover, the shape of the two side wings is basically the same, and can be square with rounded corners or circular arcs, etc.

[0105] This application takes the US size 9 as an example, and the specifications of the two side wings are as follows: Figure 17 As shown: the main body length of the inner side wing is 30.0mm, and the width of its starting end is 24.5mm; the projection width of the starting end of the outer side wing is 14.2mm; the maximum width from the outer end of the inner side wing to the outer end of the projection of the outer side wing is 74.1mm. Figure 16 The lower middle part shows the structure of the arc-shaped upper package of the outer side wing. The height of this arc-shaped upper package is 7.6mm, and the maximum projected width of the outer side wing is 17.2mm.

[0106] See also Figure 18 Taking the right foot as an example, the specific shape and structure of the 3D full-palm carbon plate rigid component described in the eighth embodiment of this application is as follows: the heel section extends normally toward the forefoot section, and the forefoot section has a normal arc-shaped plane shape. The main difference is in the heel section. While having a lateral inclination angle, the heel section also extends two side wings to both sides of this area. Both side wings of the heel section are horizontal. For specific specifications, please refer to the above embodiments.

[0107] The above is an example of the three-dimensional structure with a certain curvature difference of the 3D full-palm carbon plate rigid component described in this application. The design of the "left and right directions" is mainly relative to other designs. This direction is basically a planar design. The various schemes of the rigid components described in the embodiments of this application are based on the fact that the structure in this direction is not a planar structure. The design principle is that the left and right directions (including the forefoot section and / or the heel section) are a three-dimensional structure with a difference in drop. This application proposes the above multiple implementation plans based on this principle, but is not limited to this.

[0108] The 3D full-palm carbon plate rigid component is the core component of the sole or sports shoe of this application. It is the main component that exerts the functionality of the sole. It can provide the main stiffness of the sole and provide three-dimensional stiffness for the sole, thereby improving the sole transition during running and improving running efficiency.

[0109] In addition, the sole component described in the embodiment of the present application also includes: a non-slip polyurethane (PU) outsole C compounded on the lower surface of the lower midsole A2. The outsole C mainly plays a wear-resistant role and improves the durability of the shoe. The outsole C is generally made of wear-resistant materials, which can be rubber or other wear-resistant materials, such as commercially available TPU (thermoplastic polyurethane) and CPU (cast polyurethane). The outsole C can be a whole piece, or it can be divided into two area blocks, the forefoot area block and the heel area block, and each block can be composed of multiple blocks. The hardness of the outsole C can be 60-70 degrees (Shore A); the preferred density is ≤1.5g / cm 3 Anti-slip performance: Dry friction coefficient ≥ 0.7; Wet friction coefficient ≥ 0.5. This application prefers a wear-resistant and anti-slip PU outsole, which also reduces the damage caused by wet and slippery roads during running.

[0110] In a preferred embodiment of the present application, the upper midsole A1, the 3D carbon plate B, the lower midsole A2, and the outsole C can be bonded together by a certain adhesive.

[0111] Figure 19 This is a side view of the sole component provided by a preferred embodiment of the present application; wherein, the maximum thickness of the midsole at the forefoot is preferably 18-26mm, more preferably 20-25mm, and most preferably 24mm. The thickness of the forefoot of a typical running shoe is 12-16mm. The thickness of the nylon foam midsole material at the forefoot of the preferred embodiment of the present application reaches 24mm, which is beneficial to the shock absorption protection and rebound experience of the forefoot. In addition, the difference in the maximum thickness of the front and back of the midsole is preferably 5-7mm, more preferably 6mm; unlike the usual 8-12mm drop, the preferred setting of the present application is more suitable for most elite runners who land on the forefoot and midsole first, and helps them improve their performance.

[0112] Figure 20 This is a rear view of a sole assembly provided by a preferred embodiment of the present invention; the thickness of the inner forefoot waist of the upper midsole is greater than that of the outer forefoot waist. This better aligns with the foot's gait, where the outer forefoot strikes the ground before transitioning to the inner forefoot waist to push off. This allows for a smoother gait and provides more rebound with every push. Specifically, the difference in thickness between the inner and outer forefoot waists of the upper midsole can be 3-4mm, for example, with the inner forefoot waist being 13.1mm thick and the outer forefoot waist being 9.4mm thick.

[0113] This application also provides a sports shoe for high-intensity running, specifically a marathon running shoe, comprising the aforementioned sole components. This application does not specifically limit the upper components; the marathon running shoe provided in the embodiments of this application comprises: a two-layer, high-elasticity supercritical physical foamed nylon midsole, a propulsion-type 3D full-length carbon plate wrapped between the two midsoles, and a PU outsole with high wear resistance and superior wet grip. Such a marathon running shoe will allow runners to more easily experience a sense of control and improve their personal bests.

[0114] In order to further illustrate the present application, the sole components and sports shoes for high-intensity running provided by the present application are described in detail below with reference to the embodiments.

[0115] The reagents used in the following examples are all commercially available.

[0116] Example 1

[0117] 1. Prepare a two-layer midsole

[0118] The recipe is:

[0119]

[0120] The polyamide hard segment in the block copolymer elastomer is nylon 12 (PA12), and the polyether soft segment is polytetramethylene ether (PTMG), and the molar ratio of the two is 70:30.

[0121] The polyamide thermoplastic elastomer is extruded and granulated at 200° C. and an extrusion rate of 100 rpm to obtain elastomer particles. The elastomer particles, SEBS, ethylene-vinyl acetate copolymer and polyolefin elastomer are extruded and granulated at 180° C. and an extrusion rate of 100 rpm to obtain plastic pellets.

[0122] The plastic particles, grafting modifier, magnesium carbonate and antioxidant were mixed at 95°C for 7 minutes, and then the vulcanizer was added and mixed at 105°C to 108°C for 2 minutes, and then the temperature was raised to 115°C and mixed for 2 minutes, and then the temperature was raised to 120°C and mixed for 1.5 minutes to obtain a rubber compound with a thickness of 2 to 4 mm.

[0123] When the rubber material is thinned, the maximum value of the lateral pressure is at 5 to 10 degrees of the clamping arc, and the thinning thickness is controlled within 1 to 1.5 mm, and then extrusion granulation is performed to obtain rubber pellets; the die head temperature of the extrusion equipment used for the extrusion granulation is 90°C; the temperature of the screw section 1 is 85°C, the temperature of the screw section 2 is 85°C, and the temperature of the screw section 3 is 90°C.

[0124] The granules are injection molded and vulcanized to obtain a sub-mold; the temperature of the first section of the injection molding material pipe is 85°C, the temperature of the second section of the injection molding material pipe is 85°C, the temperature of the third section of the injection molding material pipe is 85°C, and the temperature of the fourth section of the injection molding material pipe is 90°C; the injection speed of the first section of the injection molding is 36cm / s, the injection speed of the second section is 34cm / s, the injection speed of the third section is 32cm / s, the injection speed of the fourth section is 30cm / s, and the injection speed of the fifth section is 38cm / s; the vacuuming time during the injection molding is 60s; the injection pressure during the injection molding is 100bar; the mixing time during the injection molding is more than 60min; the mold temperature during the injection molding is 175°C; the mass ratio of the release agent to water during the injection molding is 1:100; the mold opening speed during the injection molding is 80%; and the vulcanization time is 300s.

[0125] The sub-blank mold is subjected to autoclave pressure physical foaming; the volume ratio of carbon dioxide and nitrogen in the autoclave pressure physical foaming is 2:8; the temperature of the autoclave pressure physical foaming is 175°C; the pressure is 27MPa; the time is 300s; and the foaming ratio is 2.

[0126] After autoclave physical foaming, secondary compression vulcanization is performed to obtain a midsole material (thickness, for example, 25 mm); the secondary compression vulcanization temperature is 175° C.; the time is 500 s; the cooling is 500 s; and the compression pressure is 100 bar.

[0127] The performance of the midsole material obtained in Example 1 was tested, with the sample quantities being: 4MM2 pieces, 12.5MM2 pieces, and 20MM2 pieces; the test results are shown in Table 1.

[0128] Table 1 Test results of midsole material performance in Example 1

[0129]

[0130]

[0131]

[0132] 2. Carbon plate preparation

[0133] Thermoplastic carbon plates are prepared by CNC cutting 1.2 mm thick carbon plate sheets into small pieces, then heating and pre-pressing them, placing them in a mold for secondary preheating and pressurization, and finally trimming and cleaning to complete the preparation.

[0134] The stiffness performance test of the rigid component is specifically: static stiffness test 5mm strain test, the results are shown in Table 2. The stress of the forefoot is 0.3-0.5KN, the stress of the waist is 0.2-0.3KN, and the stress of the heel is 0.2-0.3KN.

[0135] Table 2 Static stiffness test 5mm strain test results

[0136]

[0137]

[0138] The specific structural shape, size and specification parameters of the 3D carbon plate of this application are as follows: thickness 1.2mm; size and specification are consistent with the first embodiment, such as Figure 4 shown.

[0139] The carbon plate of this embodiment extends to the forefoot and maintains sufficient rigidity and spoon-shaped curvature, with a hardness exceeding shore90D. This ensures that it plays a "seesaw" role during exercise. When the forefoot pushes off the ground, it drives the heel to lift, thereby saving the manpower to lift the heel and saving energy consumption during exercise.

[0140] 3. The two layers of midsole, carbon plate, and CPU outsole are glued together by heating and pressurizing. The size specifications are as follows: Figure 19 、 Figure 20 shown.

[0141] The assembled product shoes have the following mechanical properties of the heel. The product of this application has excellent DS1, DS2 and energy return rate.

[0142] Table 3 Comparison of performance of shoes produced in the embodiments of the present invention

[0143] weight DS1 DS2 Energy return rate% Maximum deformation mm Example 1 206g 42.7 133.3 75.4 24.5 Ordinary running shoes 112 287 60

[0144] It can be seen from the above embodiments that the shoes comprising the above-mentioned sole components of the present application can be used as marathon running shoes to achieve good propulsion and acceleration effects, thereby providing runners with a better driving experience and improving their marathon results.

[0145] The above is only a preferred embodiment of the present application. It should be pointed out that professionals in this technical field can implement various modifications to these embodiments without departing from the technical principles of the present application, and these modifications should also be regarded as the scope of protection of the present application.

Claims

1. A sole component for high-intensity running, comprising an upper midsole and a lower midsole, wherein a 3D full-length carbon plate is wrapped between the upper and lower midsoles to form the midsole; the thickness of the inner forefoot waist of the upper midsole is greater than the thickness of the outer forefoot waist; The 3D full-length carbon plate is a rigid plate covering the sole of the foot, formed by longitudinally connecting a forefoot section and a heel section. The forefoot section extends curvilinearly from the corresponding toe to the front end of the arch of the foot, and the heel section extends from the corresponding heel toward the forefoot section. The forefoot section and / or the heel section have a lateral inclination angle. With the ground as a reference, the inclination angle of the lateral inclination of the forefoot section and the heel section of the 3D full-length carbon plate does not exceed 10°. The upper midsole and the lower midsole are both elastic nylon foam components made by supercritical foaming, and the rebound rate of the elastic nylon foam component is greater than 60%; The preparation method of the upper midsole and the lower midsole specifically includes: S1) extruding and granulating a polyamide thermoplastic elastomer to obtain elastomer particles; S2) extruding and granulating the elastomer particles, SEBS, ethylene-vinyl acetate copolymer and polyolefin elastomer to obtain plastic pellets; S3) mixing the plastic material graft modifier, the vulcanizing agent, the magnesium carbonate and the antioxidant to obtain a rubber material; S4) extruding and granulating the rubber material to obtain rubber pellets; S5) the granules are vulcanized by injection molding to obtain a sub-blank mold; S6) subjecting the sub-blank mold to physical foaming by autoclave pressure, and then performing secondary molding and vulcanization to obtain the sub-blank mold.

2. The sole component according to claim 1, characterized in that The maximum thickness of the midsole at the forefoot is 18-26 mm.

3. The sole component according to claim 2, characterized in that The difference in maximum thickness between the front and rear of the midsole is 5-7 mm.

4. The sole component according to claim 1, wherein The difference in thickness between the inner and outer waists of the forefoot of the upper midsole is 3-4 mm.

5. The sole component according to any one of claims 1 to 4, characterized in that: The sole component further comprises a non-slip PU outsole compounded on the lower surface of the lower midsole.

6. A sports shoe for high-intensity running, comprising the sole component according to any one of claims 1 to 5.

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