A rigid component for a sole, a functional racing running shoe sole, and a sports shoe

Abstract

The present application provides a rigid component for a shoe sole, a functional racing running shoe sole and a sports shoe. The rigid component is a rigid plate covering the sole of the foot, longitudinally connected by a forefoot section and a heel section. The forefoot section extends curvilinearly from the corresponding toes to the front end of the arch of the foot, and the heel section extends from the corresponding heel towards the forefoot section. The forefoot section and / or the heel section have an inclined angle transversely. The rigid component provided by the present application is a rigid 3D three-dimensional structure. Not only are the forefoot section and the heel section longitudinally connected and extended, but also there is a certain inclined angle transversely. By placing the rigid component inside the midsole of the shoe, the present application can not only meet the transition in the front-back direction of the entire sole, but also enable a rapid transition in the left-right direction of the sole. Through the design feature of the left-right arc inclination of the rigid component, the present application comprehensively increases the rapid transition stiffness of the sole and maximizes the running economy.

Description

Technical Field

[0001] The present application relates to the technical field of footwear products, and in particular to a rigid component for a sole, a functional racing shoe sole and a sports shoe. Background Art

[0002] For professional runners or runners who want to improve their running performance, a pair of running shoes that can maximize running economy is very important. The concept of running economy is to save energy when running and improve running efficiency. Each step of the running shoes may only slightly improve the running economy of the human body, but for long-distance and long-term running events such as marathons, the overall running efficiency improved throughout the marathon is considerable. In general, for participants who finish the full marathon between 3 hours and 30 minutes and 4 hours, the number of steps they take is about 30,000 to 40,000; the number of steps for those who finish in 5 hours should be more than 50,000. It can be seen that the improvement of the running economy of sports shoes is of great significance.

[0003] At present, studies have shown that the soles of running shoes have a certain bending stiffness, which is beneficial to the running economy. The midsole is the main component of the bottom of sports shoes, and the bending stiffness of the running shoe sole is usually achieved through the midsole design. For example, some brands of running shoes currently use an embedded carbon plate design or an embedded carbon sheet structure in the midsole to improve the running economy.

[0004] The above-mentioned carbon plate structure design is a one-piece design structure, which is basically a 2D plane design structure. In terms of function, it only considers the stiffness of the front and back directions of the sole of the running shoe, and does not fully consider the stiffness difference of the front, back, left and right directions of the sole. Therefore, the current existing carbon plate design scheme needs to be further improved. Summary of the invention

[0005] In view of this, the present application provides a rigid component for a shoe sole, a functional racing shoe sole and a sports shoe. By embedding the rigid component described in the present application into the midsole of the shoe, the bending stiffness of the sole can be adjusted, thereby effectively improving the running efficiency.

[0006] The present application provides a rigid component for a sole, which is a rigid plate covering the sole of the foot formed by longitudinally connecting a forefoot section and a heel section, wherein the forefoot section extends with a curvature from the corresponding toe to the front end of the arch, and the heel section extends from the corresponding heel to the forefoot section, wherein the forefoot section and / or the heel section has an inclination angle in the lateral direction.

[0007] Preferably, the heel section is horizontal, and the forefoot section has an inclined angle in the lateral direction, and the lateral inclined portion has no undulations or is in a smooth undulating shape between the left and right ends.

[0008] Preferably, the smooth undulating shape extends along a straight line or a curve.

[0009] Preferably, there is no undulation between the left and right ends of the laterally inclined part of the forefoot section, and the longitudinal gradient is segmented and transitioned until the corresponding arch part of the heel section.

[0010] Preferably, with the ground as a reference, the inclination angle of the laterally inclined part of the forefoot section and / or the heel section is independently not more than 10°.

[0011] Preferably, the forefoot section has no lateral inclination, and the heel section has an inclination angle in the lateral direction. Inner and outer flanks extend respectively on both sides of the laterally inclined part; the inner flank is horizontal, and the outer flank is horizontal or arcuately wrapped upwards.

[0012] Preferably, the frontmost line of the part corresponding to the toes of the forefoot section is a straight line or a curve.

[0013] Preferably, there is a cut at the edge corresponding to the big toe of the forefoot section, and the length of the cut does not exceed the length of the big toe bone, and the width does not exceed 4 mm.

[0014] The present application provides a functional racing running shoe sole, including a midsole, and the rigid component described above is built in the midsole.

[0015] Preferably, the midsole is composed of an upper and a lower component and a rigid component located between the two layers.

[0016] Preferably, the sole further includes an outsole compounded near the ground of the midsole for improving wear resistance.

[0017] The present application provides a sports shoe, including the racing running shoe sole described above.

[0018] Compared with the conventional flat structure of the existing carbon plate, the rigid component provided by the present application is a rigid 3D three-dimensional structure. Not only does the forefoot section and the heel section extend longitudinally and connect, but also has a certain inclination angle in the lateral direction. By building the rigid component into the shoe midsole, the present application can not only meet the transition in the front-back direction of the entire sole, but also enable the rapid transition in the left-right direction of the sole; through the design feature of the left and right arc inclinations of the rigid component, the rapid transition stiffness of the sole is increased in all directions, maximizing the economy of running. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the general structure of the rigid component provided by the embodiment of the present application;

[0020] Figure 2 is a three-dimensional structure diagram of the rigid component provided by the first type of embodiment of the present application;

[0021] Figure 3 is Figure 2Schematic diagram of the top view structure markings of the rigid component shown;

[0022] Figure 4 is Figure 2 Schematic diagram of the side view contour markings of the rigid component shown;

[0023] Figure 5 Is a three - dimensional structure schematic diagram of the rigid component provided by the second type of embodiment of the present application;

[0024] Figure 6 is Figure 5 Schematic diagram of the top view structure and rear side view contour markings of the rigid component shown;

[0025] Figure 7 is Figure 5 Schematic diagram of the lateral inclined part of the rigid component shown;

[0026] Figure 8 Is a three - dimensional structure schematic diagram of the rigid component provided by the third type of embodiment of the present application;

[0027] Figure 9 is Figure 8 Schematic diagram of the top view structure and rear side view contour markings of the rigid component shown;

[0028] Figure 10 Is a three - dimensional structure schematic diagram of the rigid component provided by the fourth type of embodiment of the present application;

[0029] Figure 11 is Figure 10 Schematic diagram of the top view structure and rear side view contour markings of the rigid component shown;

[0030] Figure 12 Is a three - dimensional structure schematic diagram of the rigid component provided by the fifth type of embodiment of the present application;

[0031] Figure 13 is Figure 12 Schematic diagram of the side view contour of the rigid component shown;

[0032] Figure 14 Is a three - dimensional structure schematic diagram of the rigid component provided by the sixth type of embodiment of the present application;

[0033] Figure 15 Is a three - dimensional structure schematic diagram of the rigid component provided by the seventh type of embodiment of the present application;

[0034] Figure 16 is Figure 15 Schematic diagram of the top view structure markings of the rigid component shown;

[0035] Figure 17 Is a three - dimensional structure schematic diagram of the rigid component provided by the eighth type of embodiment of the present application;

[0036] Figure 18 is a three-dimensional schematic diagram of a sole provided by some embodiments of the present application;

[0037] Figure 19 is a side view structural schematic diagram of a sole provided by some embodiments of the present application;

[0038] Figure 20 is Figure 19 a structural marking schematic diagram of the sole shown;

[0039] Figure 21 is a structural decomposition schematic diagram of a sole provided by some embodiments of the present application;

[0040] Figure 22 is a comparison diagram of carbon plate simulation test results provided by embodiments of the present application;

[0041] Figure 23 is a comparison result diagram of the actual performance test of the carbon plate provided by embodiments of the present application. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other examples modified or polished by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0043] The present application provides a rigid component for a sole, which is a rigid plate covering the sole of the foot longitudinally connected by a forefoot section and a heel section. The forefoot section extends curvilinearly from the corresponding toes to the front end of the arch of the foot, and the heel section extends from the corresponding heel to the forefoot section. Among them, the forefoot section has an inclination angle in the transverse direction, and / or the heel section has an inclination angle in the transverse direction.

[0044] By internally arranging a special rigid structural material in the midsole of the shoe, the present application obtains a running shoe sole that can effectively improve running economy. Compared with traditional running shoes, the main purpose of the present application is to maximize the running efficiency.

[0045] See Figure 1 , Figure 1 is a schematic diagram of the general structure of the rigid component provided by the embodiment of the present application. The rigid component described in the embodiment of the present application is a component for a 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 integrally covers the sole of the foot, which is the rigid component. The surface shape thereof is basically the same as the shape of the sole of the foot. The described rigid component has high stiffness and high toughness, and its main preparation materials can be high-stiffness and tough materials such as carbon fiber (carbon fiber), glass fiber (glass fiber), or nylon. Preferably, the rigid component is made of carbon fiber and can be called a carbon sheet or a carbon plate.

[0046] Some embodiments of the present application use thermoplastic carbon plates. The preparation method is as follows: The carbon plate sheet with a thickness of 1 - 2 mm is cut into small pieces by CNC (the current example used is a thickness of 1.2 mm), then pre-pressed by heating, and then put into a mold for secondary preheating and pressurization. Finally, trimming and cleaning are carried out to complete the preparation. The stiffness performance test of the rigid component is specifically: static stiffness test and 5 mm strain test; the stress on the forefoot is generally 0.3 - 0.5 KN, the stress on the midfoot is 0.2 - 0.3 KN, and the stress on the heel is 0.2 - 0.3 KN.

[0047] Taking the ground horizontal plane as the reference, the overall rigid component is a "spoon-shaped" three-dimensional structure with the front lower and the rear higher. Among them, the forefoot section 1 is a region that longitudinally extends with curvature from the corresponding toe area to the front end of the arch of the foot, and the projection contour shape corresponds to the projection contour of the forefoot of the foot; it can be further divided into the corresponding toe area (part) and the corresponding metatarsal area. The frontmost end of the corresponding toe area is the frontmost 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 of the foot and has a smaller width. The frontmost line of the corresponding toe part of the forefoot section can be a straight line or a curve (including an arc line or a curved line that conforms to the toe contour). The forefoot section extends longitudinally in an arc shape, and the curvatures of its corresponding toe area and corresponding metatarsal area can be the same or slightly different.

[0048] Moreover, the heel section 2 extends from the corresponding heel to connect with the forefoot section 1, specifically longitudinally extending to the front end of the arch of the foot, including the corresponding heel area (part) and the corresponding arch area; the rearmost end of the corresponding heel area is the rearmost end of the rigid component, and the corresponding arch area is the connecting part between the heel section and the forefoot section.

[0049] In some embodiments of the present application, the forefoot section has a certain inclination angle in the transverse direction, and the heel section can be horizontal or inclined in the transverse direction. Or, in other embodiments, the forefoot section has no inclination in the transverse direction, and the heel section has an inclination angle in the transverse direction. The working principle of the present application is to design a stiffness component (rigid component) with a certain arc drop shape according to the force application characteristics of the foot during the transition in sprint running, so as to improve the transition efficiency of running.

[0050] For sprint marathon runners, the running gait generally starts with the whole foot landing on the outside or the forefoot landing on the outside first, then slightly transitions to the heel, and then quickly transitions to the inside for pushing off. Most high-level runners, during the running process, in the left-right direction, the foot lands on the outside first and then quickly transitions to the inside.

[0051] The applicant's research shows that in addition to a rapid arc transition in the front-back direction, a rapid arc drop transition is also required in the left-right direction, which is mainly achieved through the lateral tilt drop stiffness of the rigid component described in this application. Based on the ground, the tilt angle of the lateral tilt part of the forefoot section and / or the heel section is independently not more than 10°, preferably between 5° and 10°, for example 6° - 9°. When applied to some shoe soles, the rigid component can be an inclined angle with a lower outer side and a higher inner side, which can improve the rapid transition. Specifically, for some runners, the outer side of the foot touches the ground first. The lower outer side of the rigid component can provide better shock absorption; the inclined angle of the rigid component can improve the transition effect from the outer side to the inner side; the inner side of the foot is the main stress area, and the higher inner side of the rigid component can improve stability.

[0052] In this application, in addition to having a spoon-shaped structure in the front-back direction, the rigid component also has an inclined drop in the left-back direction, and its shape can have various variations; moreover, this design can be applied to the entire rigid component, or the left and right directions of the heel can be horizontal, and only the left and right directions of a local position of the forefoot are in the form of an inclined drop.

[0053] In some embodiments of this application, the heel section is horizontal, and the forefoot section has an inclined angle in the lateral direction; there can be no undulation between the left and right ends of this lateral tilt part, that is, a smooth spoon shape or a sloped design (such as a longitudinal gradient segmented transition to the heel section). Or, in some other embodiments, the heel section is horizontal, and the forefoot section has an inclined angle in the lateral direction; the shape between the left and right ends of this lateral tilt part is a smooth undulating shape, and the smooth undulating shape can extend along a straight line or a curve, for example, in at least one wave (WAVE) shape or S shape.

[0054] According to different designs of the forefoot section and the heel section, there are various design schemes for the rigid component described in the embodiments of this application, not limited to the following several schemes.

[0055] See Figures 2 - 4 , taking the right foot as an example, the specific shape structure of the rigid component in the first type of embodiments of this application is as follows: The whole rigid component is a spoon shape with a lower front and a higher back. The left and right of the heel section are inclined, and the inclination angle can be between 5° and 10°. In this embodiment, it is 6° outward inclination. The part of the forefoot section corresponding to the back of the metatarsal area is a three-dimensional structure with a lateral inclination, and the inclination angle can be between 5° and 10°. In this embodiment, it is 6°; the specific angle mark of the heel section is as Figure 3As shown. Moreover, the laterally inclined part of the forefoot section is a WAVE wave shape in the left-right direction; it can be higher on the inner side and lower on the outer side, which is more suitable for the gait of most runners, or it can be lower on the inner side and higher on the outer side for runners with a duck-foot gait. In addition, the frontmost line of the forefoot section is a curved line, and the end line corresponding to the big toe area is a forward convex curve, gradually concave and curved from the frontmost to the outside of the little toe.

[0056] In the above embodiments of the present application, by way of example, taking a US size 9 as an example, the maximum width of the forefoot section is 88.6 mm; the minimum width from the frontmost of the forefoot section to the outside of the little toe is 39.0 mm, and the length from the frontmost of the forefoot section to the top of the little toe is 15.7 mm; the maximum width at the heel of the heel section is 41.0 mm; the length from the frontmost of the forefoot section to the end of the heel section is 247.0 mm. Refer to Figure 3 In the following schematic part, the heel section is inclined outward by 6°; and the angle of lateral inclination of the part of the forefoot section corresponding to the metatarsal area and towards the rear is 6°. From Figure 4 the side view angle, the frontmost arc of the forefoot section extends to the lowest point (on the horizontal line, the same below), and the included angle between this extension line and the horizontal line is 18.54°, and the vertical distance from the frontmost of the forefoot section to the horizontal line is 30.54 mm; the length from the projection point of the frontmost of the forefoot section to the lowest point is 89.13 mm, the length from this lowest point to the projection point of the end of the arch is 88.87 mm, the length of the remaining part of the heel section is 76.13 mm, the vertical distance from the end of the arch of the heel section to the horizontal line is 14.03 mm, and the lowest point arc of the forefoot section extends to the front of the arch, and the included angle between this extension line and the horizontal line is 8.61°.

[0057] Refer to Figures 5 - 6 Taking the right foot as an example, the specific shape and structure of the rigid component in the second type of embodiment of the present application are as follows: the heel section is a horizontal plane without lateral inclination and extends from the heel section to the forefoot section; in the forefoot section corresponding to the metatarsal area, this embodiment is a WAVE wave inclination shape in the left-right direction, and the specific inclination angle and other dimensions are the same as those in the above embodiments; it can be higher on the inner side and lower on the outer side, which is more suitable for the gait of most runners, or it can be lower on the inner side and higher on the outer side for runners with a duck-foot gait. In addition, the frontmost line of the forefoot section is a straight line.

[0058] In this type of embodiment of the present application, Figure 6It shows the structure marks of A-A’ (SECTION A-A’) and B-B’ (SECTION B-B’). The length from the foremost end of the forefoot section to the end of the heel section is 253.36 mm. In the B-B’ part, the maximum height is 6.48 mm, and the height after passing through the lowest point (height is 0) is 3.06 mm. The width of the horizontal section at the maximum height is 32.14 mm. From the side view angle of the A-A’ part, the arc at the foremost end of the forefoot section extends to the lowest point. The angle between the extension line and the horizontal line is 18.54°, and the vertical distance from the foremost end of the forefoot section to the horizontal line is 30.54 mm. The length from the projection point of the foremost end of the forefoot section to the lowest point is 89.13 mm. The length from this lowest point to the projection point of the end of the arch is 88.87 mm. The length of the remaining part of the heel section is 76.13 mm. The vertical distance from the end of the arch of the heel section to the horizontal line is 14.03 mm. The arc at the lowest point of the forefoot section extends to the front end of the arch. The angle between the extension line and the horizontal line is 8.61°.

[0059] Figure 7 is Figure 5 a schematic diagram of the lateral inclination part of the rigid component shown, Figure 7 where the arrow indicates a WAVE wavy inclination shape in the left-right direction of the forefoot section, which constitutes a heterogeneous structure with inclination differences of 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, it can adjust the bending and buckling stiffness of the sole in all directions.

[0060] See Figures 8 - 9 , taking the right foot as an example, the specific shape and structure of the rigid component described in the third type of embodiment of this application are as follows: The heel section is horizontal and extends forward to the forefoot section; in the area corresponding to the metatarsal bones in the forefoot section, in this embodiment, it is an S-shaped inclination shape in the left-right direction, which can be higher on the inner side and lower on the outer side, or can be designed to be lower on the inner side and higher on the outer side. In addition, the foremost end line of the forefoot section is a straight line.

[0061] In this type of embodiment of this application, Figure 9The A-A' and B-B' structure markings are shown. The length from the foremost end of the forefoot section to the end of the heel section is 253.36 mm. In the B-B' part, the maximum height is 4.77 mm. After passing through the lowest point (height = 0), it is horizontal for a section, and the length of this section is 24.98 mm. The width of the horizontal section at the maximum height is 23.51 mm. From the side view angle of the A-A' part, the arc at the foremost end of the forefoot section extends to the lowest point, and the angle between this extension line and the horizontal line is 18.97°. The vertical distance from the foremost end of the forefoot section to the horizontal line is 31.26 mm. The length from the projection point of the foremost end of the forefoot section to the lowest point is 89.13 mm. The length from this lowest point to the projection point of the end of the arch is 88.86 mm. The length of the remaining part of the heel section is 76.13 mm. The vertical distance from the end of the arch of the heel section to the horizontal line is 14.89 mm. The arc at the lowest point of the forefoot section extends to the front end of the arch, and the angle between this extension line and the horizontal line is 9.06°.

[0062] See Figures 10 - 11 , taking the right foot as an example, the specific shape and structure of the rigid component in the fourth type of embodiment of the present application are as follows: The heel section is horizontal and extends forward to the forefoot section. In the main area of the forefoot section (corresponding to the metatarsal area), in this embodiment, it is an inclined angle without undulation left and right, that is, it is not on a horizontal plane transversely, and this inclined angle is between 5 - 10°. In this embodiment, the set inclined angle is 6°; and, this transversely inclined part is higher on the inner side and lower on the outer side. Of course, it can also be designed to be lower on the inner side and higher on the outer side.

[0063] In this type of embodiment of the present application, Figure 11 The A-A' and B-B' structure markings are shown. The length from the foremost end of the forefoot section to the end of the heel section is 253.36 mm. In the B-B' part, the maximum height is 3.41 mm, and then it slopes down to the lowest point at the other end (height = 0). From the side view angle of the A-A' part, the arc at the foremost end of the forefoot section extends to the lowest point, and the angle between this extension line and the horizontal line is 19.15°. The vertical distance from the foremost end of the forefoot section to the horizontal line is 32.25 mm. The length from the projection point of the foremost end of the forefoot section to the lowest point is 89.13 mm. The length from this lowest point to the projection point of the end of the arch is 88.87 mm. The length of the remaining part of the heel section is 76.13 mm. The vertical distance from the end of the arch of the heel section to the horizontal line is 15.73 mm. The arc at the lowest point of the forefoot section extends to the front end of the arch, and the angle between this extension line and the horizontal line is 9.22°.

[0064] In the above first to fourth type of embodiments, the forefoot section of the rigid component has a certain transverse inclination and is a non-planar three-dimensional structure. The purpose of designing this inclined angle is mainly to increase the stiffness in the left-right direction and improve the transition effect during running. In addition, other structural designs can also be added to the inclined or non-inclined areas of the forefoot section of the rigid component in the present application.

[0065] See Figures 12 - 13 , taking the right foot as an example, the specific shape and structure of the rigid component described in the fifth type of embodiment of the present application are as follows: in the main area of the forefoot section (corresponding to the metatarsal area), this embodiment is an inclined angle without undulation from left to right; the heel section is horizontal and extends forward to the forefoot section; the shape is not a smooth transition but a segmented transition, preferably divided into four segments. As Figure 13 shown, the heel section transitions to the forefoot section in a four-segment broken line of B1\B2\B3\B4. It should be noted that it is also possible that the forefoot section has no inclination, while the heel section has a lateral inclination, or both the front and rear sections have lateral inclinations, combined with a gradient segmented transition design.

[0066] See Figure 14 , taking the right foot as an example, the specific shape and structure of the rigid component described in the sixth type of embodiment of the present application are as follows: in the main area of the forefoot section (corresponding to the metatarsal area), this embodiment is an inclined angle without undulation from left to right; the heel section is horizontal and extends normally forward to the forefoot section; there is a cut at the edge corresponding to the big toe in the forefoot section, that is, there is a small segment of toe separation design corresponding to the big toe area, not a whole piece structure. Of course, it is also possible that the forefoot section has no inclination, while the heel section has a lateral inclination, or both the front and rear sections have lateral inclinations, combined with the toe separation design.

[0067] Among them, the position of the toe separation can be at the inner 1 / 3 - 1 / 2 lateral position of the forefoot section; the length of this cut does not exceed the length of the big toe bone. Generally, the length of the toe separation position extending backward from the front end of the forefoot section is between 30 - 50 mm, and the width of the cut does not exceed 4 mm, specifically it can be 3 - 4 mm.

[0068] The main principle of the design of this embodiment is to consider that the area of the big toe is the main force-bearing area during running push-off and extension. Separating the area of the big toe alone is beneficial for local area force generation, thereby improving the push-off and extension efficiency.

[0069] In some other embodiments of the present application, the forefoot section has no lateral inclination, and the heel section has a lateral inclination angle; the area between the left and right sides of this lateral inclination part is usually smooth and without undulation. As a preference, the inner flank and outer flank are respectively extended on the left and right sides of the lateral inclination part of the heel section described in the embodiment of the present application.

[0070] See Figures 15 - 16, taking the right foot as an example, the specific shape and structure of the rigid component in the seventh type of embodiment of the present application are as follows: the heel section extends forward to the forefoot section normally, and the forefoot section has a normal arc-shaped planar shape. The main difference lies in the heel section. While having a lateral inclination angle, the heel section extends two flanks respectively to both sides of this area. The inner flank is horizontal, and the outer flank is an arc-shaped upper wrap. The two flanks are exposed on the sole sidewall and can be seen from the shoe appearance; alternatively, it can also be in an embedded and non-exposed form. Moreover, the shapes of the two flanks are basically the same and can be a rounded square or a circular arc, etc.

[0071] Taking the US size 9 as an example for this type of embodiment of the present application, the specifications of the two flanks are as Figure 16 shown: the main body length of the inner flank is 30.0 mm, and the width of its starting end is 24.5 mm; the projected width of the starting end of the outer flank is 14.2 mm; the maximum width from the outer end of the inner flank to the projected outer end of the outer flank is 74.1 mm. Figure 16 The lower part in the following shows the structure of the arc-shaped upper wrap of the outer flank. The height of this arc-shaped upper wrap is 7.6 mm, and the maximum projected width of the outer flank is 17.2 mm.

[0072] Refer to Figure 17 , taking the right foot as an example, the specific shape and structure of the rigid component in the eighth type of embodiment of the present application are as follows: the heel section extends forward to the forefoot section normally, and the forefoot section has a normal arc-shaped planar shape. The main difference lies in the heel section. While having a lateral inclination angle, the heel section extends two flanks respectively to both sides of this area. These two flanks of the heel section are both horizontal, and the specific specifications can refer to the above embodiments.

[0073] The above is an example illustration of the three-dimensional structure of the rigid component of the present application with a certain arc drop. The design of the "left - right direction" is mainly that, compared with other designs, this direction is basically a planar design. For the various solutions of the rigid component in the embodiments of the present application, it is considered that the structure in this direction is not a planar structure. The design principle is that the left - right direction (including the forefoot section and / or the heel section) is a three-dimensional structure with a drop difference. The present application proposes the above various implementation solutions based on this principle, but is not limited thereto.

[0074] The rigid component described is the most core component in the sole or sports shoes of the present application and is the main component for exerting the functionality of the sole. It can provide the main stiffness of the sole and a three-dimensional stiffness for the sole, thereby improving the sole transition during running and enhancing the running efficiency.

[0075] The embodiments of the present application provide a functional racing shoe sole, including a midsole, and the midsole is internally provided with the rigid component described above.

[0076] The present application is a sole technology for improving running economy by embedding the unique rigid material structure mentioned above in the midsole of sports shoes. By using the rigid components mentioned above, the bending stiffness of the sole can be adjusted to achieve a fast transition during running, thereby obtaining a running shoe sole with improved running efficiency.

[0077] The running shoe sole with the rigid component built into the midsole described in the embodiment of the present application is composed of three major components, namely the midsole A, the rigid component B, and the outsole C. These three components can be bonded together by a certain adhesive.

[0078] The overall appearance of the running shoe sole can be seen in Figures 18 - 20 ,in, Figure 18 is a three-dimensional schematic diagram of a sole provided by some embodiments of the present application, Figure 19 The figure is a side view of the sole structure of some embodiments of the present application. The shape of the entire sole in the embodiments of the present application is a conventional running shoe shape with a low front and a high back, and the front and rear drop is generally between 4-10 mm.

[0079] Figure 20 yes Figure 19 The schematic diagram of the structural markings of the sole shown, taking the shoe size US9 as an example, in the lateral view (LATERALVIEW), the height of the highest point of the toe from the ground is 59.3mm, and the maximum height of the heel is 44.7mm; the height of the highest point of the forefoot outsole from the ground is 39.5mm, and the height of the highest point of the heel outsole from the ground is 17.6mm; the thickness of the front end of the metatarsal area corresponding to the forefoot of the sole is 24.7mm, and the thickness at the lowest point of the forefoot is 30.2mm, and the thickness of the outsole here is 1.1mm; the height of the heel corresponding to the end of the arch is 42.4mm, and the thickness at the lowest point of the heel is 41.6mm.

[0080] Figure 20 The lower middle part is the A-A' part, which is a cross-sectional schematic diagram of the middle position of the entire sole in the front-to-back direction, used to explain the relationship between the various components. The dimensions include: the thickness of the middle section of the forefoot in this embodiment is 24.1mm, the thickness of the middle section of the heel is 30.0mm, but the thickest middle section is designed not to exceed 40mm; the thickness of component B is 1.2mm.

[0081] The embodiment of the present application is a running shoe sole composed of multiple components, wherein the rigid component B is the core component, and the overall appearance structure formed by the structural combination thereof is integrated to give full play to the advantages of the running shoe. The content of the rigid component B is as described above and will not be repeated here.

[0082] In the embodiments of the present application, the main function of the midsole A is to provide shock absorption protection and rebound for the sole. The midsole A can be a single-piece sheet-like component, whose upper surface is close to the sole of the foot, and the contour shape can cover the projection shape of the sole of the foot, while the lower surface of the midsole is close to the ground. The midsole A can also be multiple layers such as A1, A2, A3, etc., usually divided into upper and lower layers A1 and A2, which are bonded together; the lower layer can be a single integral piece A2, or two independent components A21 and A22 for the forefoot and the heel. Moreover, there are no special restrictions on the structural design of the side edges, etc. of the midsole in the present application.

[0083] The main preparation materials of the midsole A can be foaming materials such as ethylene vinyl acetate copolymer (EVA), polyurethane (PU), thermoplastic polyurethane (TPU), or thermoplastic polyethylene (TPE), etc.; if the midsole A is composed of multiple layers, the materials of components A1 and A2 are not necessarily the same materials, and any one or more of the above materials can be used. Exemplarily, the hardness of the midsole A is 35 - 50 degrees (Shore C); the material density is less than 0.2 g / cm 3 . Preferably, the midsole in the present application is composed of an upper and a lower component and a rigid component located between the two layers. And if the midsole A is a single-piece sheet-like component, the rigid components can be independently embedded at its upper and lower surfaces.

[0084] In addition, the sole further includes an outsole C compounded to the ground side of the midsole; the outsole C mainly functions to provide abrasion resistance and improve the durability of the shoes. The outsole C generally uses wear-resistant materials, which can be rubber or other wear-resistant materials. The outsole C can be a single integral sheet, or can be separated into two regional blocks, the forefoot regional block C1 and the heel regional block C2, and each block can be composed of multiple pieces. The hardness of the outsole C can be 60 - 70 degrees (Shore A); preferably, the density is ≤1.5 g / cm 3 ; Anti-slip performance: dry sliding friction coefficient ≥0.7; wet sliding friction coefficient ≥0.5.

[0085] See Figure 21 , Figure 21 is a schematic exploded view of the structure of the sole provided by some embodiments of the present application. The midsole of this sole is composed of an upper component A1, a rigid component B, and a lower component A2 by bonding, and the outsole C is designed in a split form, divided into the forefoot regional block C1, and the heel regional block is divided into two pieces, the inner block C21 and the outer block C22.

[0086] The sole composed of the midsole A, the rigid component B, and the outsole C in the embodiments of the present application has a higher toe and forefoot camber than traditional running shoes. The overall shape of the sole fits the shape of the rigid component B, and the forefoot forms an arc, which is beneficial for the transition of pushing off forward. The thickness of the inner edge surface of the entire combined sole does not exceed 40 mm.

[0087] The embodiment of the present application also provides a sports shoe, including the sole of the racing running shoe described above, which can be called a racing running shoe, etc. The present application is designed with a 3D three-dimensional midsole with a rigid component in combination with the characteristics of human biomechanics during running, aiming to maximize the running economy of the running shoe on the basis of ensuring the shock absorption of the running shoe. On the above-mentioned running sole structure that can improve running efficiency, the sports shoes described in the embodiment of the present application can adopt conventional components such as the upper, without special limitations.

[0088] To further understand the present application, the following will specifically describe the rigid component for the sole, the functional racing running shoe sole and the sports shoe provided by the present application in combination with embodiments.

[0089] Embodiment

[0090] In this embodiment, the rigid component adopts a thermoplastic carbon plate. The preparation method is as follows: The carbon plate sheet with a thickness of 1.2 mm is cut into small pieces by CNC, then heated and pre-pressed, and then put into a mold for secondary preheating and pressurization. Finally, it is trimmed and cleaned to complete the preparation. The stiffness performance test of the rigid component is specifically: a static stiffness test of 5 mm strain test, and the results are shown in Table 1. The stress at the forefoot is 0.3 - 0.5 KN, the stress at the midfoot is 0.2 - 0.3 KN, and the stress at the heel is 0.2 - 0.3 KN.

[0091] Table 1 Results of static stiffness test of 5 mm strain test

[0092]

[0093] The carbon plate with a 3D three-dimensional structure in the embodiment of the present application is compared with the conventional planar carbon plate structure, and the simulation test results are obtained.

[0094] Among them, the parameters of the conventional planar carbon plate structure are: thickness 1.2 mm; the length-width structure parameters are the same as those of the 3D structure, and the difference is the planar structure with the same thickness;

[0095] The specific structural shape and dimensional specification parameters of the 3D three-dimensional structure carbon plate of the present application are as follows:

[0096] Thickness 1.2 mm; the dimensional specifications are the same as those of the first type of embodiment, as Figure 3 shown. The results of the 3-point bending simulation test are as Figure 22 shown. The abscissa is Displacement (displacement), unit mm, and the ordinate is Force (force), unit N; the forefoot bending stiffness of the 3D carbon plate described in the embodiment of the present application is 13% higher than that of the conventional planar carbon plate.

[0097] The 3D carbon plate and the conventional planar carbon plate in the embodiment of the present application are subjected to actual performance tests, and the results are as Figure 23As shown, with the same material thickness, the bending stiffness of the 3D carbon plate is improved, especially in the forefoot area.

[0098] In summary, the technical solution of the present invention combines the characteristics of biomechanics during human running and designs a three-dimensional midsole with an internal rigid component to maximize the running economy of running shoes.

[0099] In sprint running, the sole usually makes a rapid contact transition with the ground. If the running efficiency needs to be improved, the sole requires a rapid rolling transition, which is more efficient than a bending transition. The present invention adopts a rolling method, which can save more energy. In addition, the toe spring height of conventional running shoes is generally within 30 mm, while the toe spring height of this application is close to 40 mm. The present invention replaces the traditional forefoot bending transition with a high toe spring design of the forefoot of the sole, reducing the energy consumption of the forefoot bending of the foot.

[0100] In addition to considering the front-to-back transition of the entire sole, this application also considers the rapid transition of the sole from side to side. Through the left-right arc design of the rigid component, the rapid transition stiffness of the sole is increased in all directions, maximizing the running economy.

[0101] The above are only the preferred embodiments of the present invention. It should be noted that those skilled in the art of this technology can make various modifications to these embodiments without departing from the technical principle of the present invention, and these modifications should also be regarded as the scope protected by the present invention.

Claims

1. A rigid component for a sole, which 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 curvingly from the corresponding toes to the front end of the arch of the foot, and the heel section extends from the corresponding heel towards the forefoot section, characterized in that, The forefoot section and the heel section have an inclination angle in the lateral direction; with the ground as a reference, the inclination angle is 5-10°; or, the forefoot section or the heel section has an inclination angle in the lateral direction, and with the ground as a reference, the inclination angles are 5-10° respectively; The frontmost line of the forefoot section corresponding to the toe part is a straight line or a curve; the rigid member is a thermoplastic carbon plate.

2. The rigid component according to claim 1, wherein The heel section is horizontal, and the forefoot section has an inclination angle in the lateral direction, and there is no undulation or a smooth undulation shape between the left and right ends of the laterally inclined part.

3. The rigid member according to claim 2, wherein The smooth undulation shape extends along a straight line or a curve.

4. The rigid member according to claim 2, wherein There is no undulation between the left and right ends of the laterally inclined part of the forefoot section, and the longitudinal gradient is segmented and transitions until the part corresponding to the arch of the foot in the heel section.

5. The rigid component according to claim 1, characterized in that, The forefoot section has no lateral inclination, and the heel section has an inclination angle in the lateral direction. Inner and outer flanks extend respectively on the left and right sides of the laterally inclined part; the inner flank is horizontal, and the outer flank is horizontal or curved and wraps upward.

6. The rigid component according to any one of claims 1-5, characterized in that, There is a cut at the edge of the forefoot section corresponding to the big toe, and the length of the cut does not exceed the length of the big toe bone, and the width does not exceed 4 mm.

7. A functional sole for a racing running shoe, including a midsole, characterized in that, The midsole is internally provided with the rigid member according to any one of claims 1-6.

8. The sole of the racing running shoes according to claim 7, wherein The midsole is composed of an upper and a lower component and a rigid member located between the two layers.

9. The sole of the racing running shoes according to claim 8, wherein The sole further includes an outsole laminated near the ground of the midsole for enhancing wear resistance.

10. A sports shoe, comprising the racing shoe sole according to any one of claims 7-9.

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