A three-hardness special-shaped plate, sole and shoe

Abstract

The utility model discloses a three hardness special-shaped plate, its corresponding human foot structure is in order from front to back is the forefoot support part, the arch support part and heel support part, and the forefoot support part is equipped with the split groove, and the forefoot support part is divided into the inside support part, the middle support part and the outside support part, and the hardness of the middle support part, the arch support part and heel support part is greater than the inside support part, and the hardness of the inside support part is greater than the outside support part. The utility model discloses still a kind of shoe sole and shoe with the three hardness special-shaped plate. The utility model is through the forefoot support part is divided into three parts that can independently deform, constructs hardness gradient distribution, matches the dynamic load transfer characteristic of forefoot running method, establishes the stiffness transition zone that meets biomechanics characteristics, realizes the scientific attenuation of impact load and energy transmission path optimization, enhances the speed of runner when wearing sports landing-start, improves sports performance, reduces the joint impact damage risk in the process of running.

Description

Technical Field

[0001] This utility model relates to the field of footwear technology, and in particular to a three-hardness irregular-shaped plate, a sole, and a shoe. Background Technology

[0002] Traditional carbon fiber plates generally adopt a one-piece molded structure with a single hardness, and their mechanical properties exhibit isotropic distribution characteristics. This homogeneous design fails to fully consider the differences in the dynamic characteristics of foot-ground contact during human movement, especially in the forefoot running motion mode. It cannot optimize the energy conversion efficiency during the push-off phase, nor can it achieve scientific attenuation of impact load, resulting in limited improvement in athletic performance and potentially exacerbating the risk of cumulative knee joint injuries during running. Utility Model Content

[0003] The purpose of this invention is to provide a three-hardness irregular plate, sole, and shoe that are compatible with forefoot running, in order to solve the technical problem of limited improvement in athletic performance of traditional homogeneous carbon plates.

[0004] To achieve the above objectives, the technical solution proposed by this utility model is as follows: A three-hardness irregular-shaped plate, corresponding to the structure of the human foot from front to back, consists of a forefoot support, an arch support, and a heel support. The forefoot support is provided with a dividing groove, which divides the forefoot support into an inner support, a middle support, and an outer support. The hardness of the middle support, arch support, and heel support is greater than that of the inner support, and the hardness of the inner support is greater than that of the outer support.

[0005] Preferably, the hardness of the outer support portion is 85±2D, the hardness of the inner support portion is 88±2D, the hardness of the middle support portion is 92±2D, the hardness of the arch support portion is 92±2D, and the hardness of the heel support portion is 92±2D.

[0006] Preferably, the thickness of the middle support, the arch support, and the heel support is greater than that of the inner support, and the thickness of the inner support is greater than that of the outer support.

[0007] Preferably, the thickness of the middle support portion is 1.1±0.1mm, the thickness of the arch support portion is 1.1±0.1mm, the thickness of the heel support portion is 1.1±0.1mm, the thickness of the inner support portion is 1.0±0.1mm, and the thickness of the outer support portion is 0.9±0.1mm.

[0008] Preferably, the dividing groove includes a first dividing groove and a second dividing groove. The first dividing groove is arc-shaped, and the first dividing groove cuts the middle support portion into a tongue shape and cuts the inner support portion and the outer support portion into an annulus surrounding the outside of the middle support portion. The second dividing groove disconnects the inner support portion and the outer support portion on the outside.

[0009] Preferably, the tri-hardness shaped plate is a fiber-reinforced resin plate, which includes a first fiber layup, a second fiber layup, and a third fiber layup bonded together by resin; the first fiber layup covers the forefoot support, the arch support, and the heel support; the second fiber layup covers the medial support, the midfoot support, the arch support, and the heel support; and the third fiber layup covers the midfoot support, the arch support, and the heel support.

[0010] Preferably, the forefoot support portion is concave downwards in the front-to-back direction, and the arch support portion is convex upwards in the front-to-back direction.

[0011] A shoe sole comprising a midsole and a tri-hardness profiled plate of the present invention disposed within the midsole.

[0012] A shoe comprising the sole of this invention and an upper bonded to the sole.

[0013] By adopting the above technical solution, the beneficial effects of this utility model are as follows: This invention divides the forefoot support into three independently deformable parts, creating a hardness gradient distribution that matches the dynamic load transfer characteristics of forefoot running. The outer support, with lower hardness, deforms first to absorb the initial impact energy. The inner support, with medium hardness, receives and smooths the load fluctuations transmitted from the outer side and provides preloading for the central energy storage, completing the transition from impact absorption to propulsion preparation. The central support, with high hardness, creates a rigid fulcrum to enhance energy conversion efficiency during the push-off phase. The three parts work together to establish a stiffness transition zone that conforms to biomechanical characteristics, achieving scientific attenuation of impact load and optimization of energy transfer path. This enhances the runner's landing-start speed during exercise, improves athletic performance, and reduces the risk of joint impact injury during running. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram (left foot) of a preferred embodiment of the three-hardness carbon plate of this utility model.

[0015] Figure 2 for Figure 1 A side view diagram.

[0016] Figure 3 for Figure 1 A top-down view.

[0017] Figure 4 for Figure 1 Schematic diagram of fiber layup in medium-hardness carbon fiber plate.

[0018] The components are: 1. Forefoot support; 11. Dividing groove; 111. First dividing groove; 112. Second dividing groove; 12. Medial support; 13. Middle support; 14. Lateral support; 2. Arch support; 3. Heel support; 4. First fiber layup; 5. Second fiber layup; 6. Third fiber layup. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] In the following explanation, terms indicating direction such as front, back, inside, and outside are observed from the wearer's perspective. For example, front refers to the direction of the toes, back refers to the direction of the heel, inside refers to the inside of the foot (the side of the first toe) in the direction of foot width, and outside refers to the outside of the foot (the side of the fifth toe) in the direction of foot width.

[0021] The irregularly shaped plate of this utility model can be made of fiber-reinforced resin material. The fiber used as the fiber-reinforced resin material can be carbon fiber, glass fiber, boron fiber, polyamide fiber, polyethylene fiber, etc.

[0022] Figures 1-4 The tri-hardness irregular plate used for the left foot is shown. The tri-hardness irregular plate used for the right foot is symmetrical to the left and right feet. The tri-hardness irregular plate used for the right foot is not shown.

[0023] This invention provides a three-hardness irregularly shaped plate, which corresponds to the structure of the human foot from front to back as a forefoot support part 1, an arch support part 2, and a heel support part 3. The forefoot support part 1 is provided with a dividing groove 11, which divides the forefoot support part 1 into an inner support part 12, a middle support part 13, and an outer support part 14. Among them, the hardness of the middle support part 13, the arch support part 2, and the heel support part 3 is greater than that of the inner support part 12, and the hardness of the inner support part 12 is greater than that of the outer support part 14.

[0024] This invention divides the forefoot support 1 into three independently deformable parts to create a hardness gradient distribution, matching the dynamic load transfer characteristics of forefoot running. The outer support 14, with lower hardness, deforms first to absorb the initial impact energy. The inner support 12, with medium hardness, receives and smooths the load fluctuations transmitted from the outer side and provides preloading for energy storage in the middle, completing the mode transition from impact absorption to propulsion preparation. The middle support 13, with high hardness, creates a rigid fulcrum, enhancing the energy conversion efficiency during the push-off phase. The three parts work together to establish a stiffness transition zone that conforms to biomechanical characteristics, achieving scientific attenuation of impact load and optimization of energy transfer path. This enhances the runner's landing-start speed during exercise, improves athletic performance, and reduces the risk of joint impact injury during running.

[0025] Combination Figure 2 In some embodiments of this invention, the forefoot support portion 1 of the tri-hardness irregular plate is concave downwards in the front-to-back direction, while the arch support portion 2 is convex upwards in the front-to-back direction. Traditional carbon plates are extremely rigid. To enhance starting and extension speed, traditional carbon plates are generally designed with a certain upward tilt. For novice runners or runners who have never tried traditional carbon plates, wearing traditional carbon plate running shoes in the early stages is a burden. The downward pressure is insufficient to drive the traditional carbon plate, while the upward tilt of the traditional carbon plate constantly puts pressure on the sole of the foot, increasing the difficulty of the exercise. This invention, by dividing the forefoot support portion 1 into three independently deformable parts, avoids the forefoot being completely locked compared to traditional carbon plates, reducing the feeling of forefoot restraint. The inner and outer support portions 14 of this invention are less rigid than the middle support portion 13, the arch support portion 2, and the heel support portion 3, which can effectively increase the number of people who can wear them, making them suitable for a wider range of people. Beginners can also easily master them and improve their personal performance. Professional runners can also adjust their stride and improve their landing and starting speed by using the three-hardness partitions, thus improving their personal racing performance.

[0026] Combination Figure 4 In some embodiments of this utility model, the tri-hardness shaped plate is a fiber-reinforced resin plate made of fiber-reinforced resin material. Fiber-reinforced resin plate is a composite board with resin as the matrix and carbon fiber or other fibers as reinforcing materials. It typically uses thermosetting resins such as epoxy resin, unsaturated polyester resin, and vinyl ester resin, which are impregnated with reinforcing materials such as carbon fiber and polyamide fiber and then cured.

[0027] The tri-hardness profiled plate comprises a first fiber layup 4, a second fiber layup 5, and a third fiber layup 6 bonded together with resin. The fiber layup can be composed of unwoven fiber bundles, woven fiber cloth, or a combination of both. The fiber layup can be a single layer or several layers.

[0028] By adjusting the laying range of different fiber layups, the hardness and thickness of different areas of the tri-hardness irregular-shaped plate can be made different. In this embodiment, the first fiber layup 4 covers the forefoot support 1, the arch support 2, and the heel support 3; the second fiber layup 5, compared to the first fiber layup 4, reduces the outer support portion 14, and covers the inner support portion 12, the middle support portion 13, the arch support portion 2, and the heel support 3; the third fiber layup 6, compared to the second fiber layup 5, reduces the inner support portion 12, and covers the middle support portion 13, the arch support portion 2, and the heel support 3. This results in the middle support portion 13, the arch support portion 2, and the heel support portion 3 having a greater thickness than the inner support portion 12, and the inner support portion 12 having a greater thickness than the outer support portion 14.

[0029] In some embodiments of this invention, the hardness of the outer support portion 14 reaches 85±2D, the hardness of the inner support portion 12 reaches 88±2D, the hardness of the middle support portion 13 reaches 92±2D, the hardness of the arch support portion 2 reaches 92±2D, and the hardness of the heel support portion 3 reaches 92±2D. The thickness of the middle support portion 13 is 1.1±0.1mm, the thickness of the arch support portion 2 is 1.1±0.1mm, the thickness of the heel support portion 3 is 1.1±0.1mm, the thickness of the inner support portion 12 is 1.0±0.1mm, and the thickness of the outer support portion 14 is 0.9±0.1mm. It is understood that although the hardness range of each area has a certain variation, the actual combination is still based on the hardness zoning setting: the hardness of the middle support portion 13, the arch support portion 2, and the heel support portion 3 is greater than that of the inner support portion 12, and the hardness of the inner support portion 12 is greater than that of the outer support portion 14. The thickness is similarly determined.

[0030] Combination Figure 3 In some embodiments of this utility model, the above-mentioned dividing groove 11 includes a first dividing groove 111 and a second dividing groove 112. The first dividing groove 111 is arc-shaped, dividing the middle support portion 13 into a tongue shape, dividing the inner support portion 12 and the outer support portion 14 into an annulus surrounding the outer side of the middle support portion 13. The second dividing groove 112 separates the inner support portion 12 and the outer support portion 14 on the outer side. The inner support portion 12 extends laterally to the front side of the middle support portion 13 to drive the toe joint to extend and exert force.

[0031] Based on the force distribution sequence of the forefoot running pattern, the outer forefoot strikes first, bearing most of the force. This requires more cushioning to distribute the pressure on the legs; therefore, the outer forefoot support section 14 has lower hardness, allowing for better cushioning of the foot's force in the midsole. The force then extends to the inner forefoot, where the inner support section 12 is slightly harder than the outer support section 14. The inner support section 12 extends laterally to the front of the middle support section 13, facilitating toe extension and power generation. The force transitions to this point, where the extension / support force begins to be generated. Finally, the entire foot strikes, requiring a rapid start. The middle support section 13, arch support section 2, and heel support section 3 are harder and more rigid, working in conjunction with the lateral extension of the inner support section 12 to generate power from the foot, making the three-hardness irregular plate faster than traditional carbon plates. Testing showed that its starting speed is 15% faster than traditional carbon plates.

[0032] This utility model also provides a shoe sole, which includes a midsole and a tri-hardness irregular plate of this utility model disposed within the midsole.

[0033] This utility model also provides a shoe, which includes the aforementioned sole and an upper bonded to the sole.

[0034] The sole and other parts of the shoe not covered are the same as or can be implemented using existing technology, and will not be described in detail here.

[0035] It should be noted that the above division of the irregular plate area is only a rough division based on the distribution of bones in the human foot, so that those skilled in the art can understand the approximate range of each area, and there is no strict dividing line between adjacent areas.

[0036] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims are within the scope of protection of the present invention.

Claims

1. A tri-hardness irregular-shaped plate, characterized in that, The corresponding structures of the human foot, from front to back, are the forefoot support (1), the arch support (2), and the heel support (3). The forefoot support part (1) is provided with a dividing groove (11), which divides the forefoot support part (1) into an inner support part (12), a middle support part (13) and an outer support part (14). The hardness of the middle support part (13), the arch support part (2) and the heel support part (3) is greater than that of the inner support part (12), and the hardness of the inner support part (12) is greater than that of the outer support part (14).

2. The tri-hardness irregular-shaped plate according to claim 1, characterized in that, The hardness of the outer support part (14) is 85±2D, the hardness of the inner support part (12) is 88±2D, the hardness of the middle support part (13) is 92±2D, the hardness of the arch support part (2) is 92±2D, and the hardness of the heel support part (3) is 92±2D.

3. The tri-hardness irregular-shaped plate according to claim 1, characterized in that, The thickness of the middle support part (13), the arch support part (2) and the heel support part (3) is greater than that of the inner support part (12), and the thickness of the inner support part (12) is greater than that of the outer support part (14).

4. The tri-hardness irregular-shaped plate according to claim 3, characterized in that, The thickness of the middle support part (13) is 1.1±0.1mm, the thickness of the arch support part (2) is 1.1±0.1mm, the thickness of the heel support part (3) is 1.1±0.1mm, the thickness of the inner support part (12) is 1.0±0.1mm, and the thickness of the outer support part (14) is 0.9±0.1mm.

5. The tri-hardness irregular-shaped plate according to claim 1, characterized in that, The dividing groove (11) includes a first dividing groove (111) and a second dividing groove (112). The first dividing groove (111) is arc-shaped. The first dividing groove (111) divides the middle support part (13) into a tongue shape and divides the inner support part (12) and the outer support part (14) into an annulus surrounding the outer side of the middle support part (13). The second dividing groove (112) disconnects the inner support part (12) and the outer support part (14) on the outside.

6. The tri-hardness irregular-shaped plate according to claim 1, characterized in that, The aforementioned tri-hardness irregular-shaped plate is a fiber-reinforced resin plate, which includes a first fiber layup (4), a second fiber layup (5), and a third fiber layup (6) bonded together by resin. The first fiber lay-up (4) covers the forefoot support (1), the arch support (2) and the heel support (3). The second fiber layup (5) covers the inner support (12), the middle support (13), the arch support (2) and the heel support (3). The third fiber layup (6) covers the middle support (13), the arch support (2) and the heel support (3).

7. The tri-hardness irregular-shaped plate according to claim 1, characterized in that, The forefoot support part (1) is concave downward in the front-back direction, and the arch support part (2) is convex upward in the front-back direction.

8. A shoe sole, characterized in that, Includes a midsole and a tri-hardness profiled plate as described in any one of claims 1 to 7 disposed within the midsole.

9. A shoe, characterized in that, Includes the sole as described in claim 8 and the upper compounded on the sole.

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