A carbon fiber plate for athletic shoe soles, athletic shoe soles, and athletic shoes.

Abstract

This invention discloses a carbon plate for athletic shoe soles, an athletic shoe sole, and an athletic shoe. The carbon plate is integrally laid with carbon fiber and includes a main body and two first support plates. The main body protrudes upward along its width in the area corresponding to the heel, forming a first groove with an opening facing downward. The width of the first groove gradually increases downward. The two first support plates extend outward from opposite ends of the two groove walls of the first groove. The athletic shoe sole includes a midsole and the aforementioned carbon plate, with the carbon plate embedded in the midsole. The athletic shoe uses the aforementioned athletic shoe sole. The carbon plate, athletic shoe sole, and athletic shoe of this invention avoid the impact and wear of full-length ground contact, achieving lower impact force, greater rebound, less running power loss, and higher exercise efficiency.

Description

Technical Field

[0001] This invention relates to the field of footwear, and more specifically to a body for a sports shoe sole, a sports shoe sole, and a sports shoe. Background Technology

[0002] Shoes are the home of our feet. From an ergonomic perspective, scientifically designed shoes ensure that our feet are not only not tired but also very comfortable. With the improvement of living standards, running shoes have gradually become a necessity in people's daily lives. A good pair of running shoes plays an important role in improving running performance, protecting runners, and increasing training efficiency. Traditional running shoes consume a lot of energy from the runner with each step, due to the compression of the midsole during the transition to the ground posture. This fails to meet runners' needs for comfort, cushioning, and rebound, and also results in low exercise efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned defects or problems in the prior art and to provide a carbon plate for the sole of a sports shoe, a sports shoe sole, and a sports shoe, which avoids the impact and wear when the whole foot strikes the ground, and can achieve lower impact, greater rebound, less running power loss, and higher sports efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Technical Solution 1: A carbon plate for the sole of a sports shoe, which is integrally laid with carbon fiber. The carbon plate includes a body and two first support plates. The body protrudes upward along its width in the area corresponding to the heel to form a first groove with an opening facing downward. The width of the first groove gradually increases downward. The two first support plates extend outward from opposite ends of the two groove walls of the first groove.

[0006] Based on technical solution one, there is also technical solution two, which further includes two second support pieces; the main body protrudes upward along its width direction in the area corresponding to the forefoot to form a second groove with an opening facing downward, the width of the second groove gradually increases downward, and the two second support pieces extend outward from opposite ends of the two groove walls of the second groove.

[0007] Based on technical solution two, there is also technical solution three. In technical solution three, the body is provided with a forefoot area, an arch area and a heel area that are connected from front to back. The first groove and the second groove are formed in the heel area and the forefoot area, respectively. The arch area protrudes upward along its width direction to form a third groove with an opening facing downward. The width of the third groove gradually increases downward. The depth of the third groove is greater than the depth of the second groove. The depth of the second groove is greater than the depth of the first groove.

[0008] Based on technical solution three, there is also technical solution four. In technical solution four, the upper surface of the arch area is provided with a number of reinforcing ribs extending from front to back, and the reinforcing ribs are arranged at intervals along the width direction of the carbon plate.

[0009] Based on technical solution four, there is also technical solution five. In technical solution five, the forefoot area is concave downward in the front-back direction, the arch area is convex upward in the front-back direction, and the heel area is concave downward in the front-back direction; the front and rear ends of the second support piece are smoothly transitioned to the body.

[0010] Based on technical solution five, technical solution six is ​​also provided. In technical solution six, the carbon plate is provided with a first fiber unit and at least three second fiber units in sequence along its thickness direction. The orientation of the heel part of the sole is 0°. The first fiber unit is formed by bonding two layers of carbon fiber strips symmetrical about the center line, and one layer of carbon fiber strips is oriented at 45° relative to the center line. The second fiber unit is formed by bonding two layers of carbon fiber strips symmetrical about the center line, and one layer of carbon fiber strips is oriented at 19° relative to the center line.

[0011] Technical Solution Seven: The present invention also provides a sports shoe sole, which forms a forefoot portion, an arch portion, and a heel portion from front to back, characterized in that it includes a midsole and a carbon plate as described in any one of Technical Solutions One to Six, wherein the carbon plate is embedded in the midsole.

[0012] Based on technical solution seven, technical solution eight is also provided. In technical solution eight, the midsole includes an upper midsole and a lower midsole that can be fitted together. The bottom surface of the upper midsole is provided with a receiving groove that matches the shape of the carbon plate. The carbon plate is adapted to be received in the receiving groove and fits against the bottom of the receiving groove. The shape of the upper surface of the lower midsole matches the shape of the carbon plate. When the upper midsole is fitted against the lower midsole, the lower surface of the carbon plate fits against the upper surface of the lower midsole, and the inner and outer sides of the midsole corresponding to the first support piece form side openings.

[0013] Based on technical solution eight, there is also technical solution nine, which includes a large outsole that fits onto the lower surface of the middle insole; the upper middle insole is recessed downwards along its front-back direction and width direction to form a recessed area suitable for accommodating the foot.

[0014] Technical Solution 10: This invention also provides a sports shoe, which adopts the sports shoe sole described in any one of Technical Solutions 7 to 9.

[0015] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In technical solution one, the main body protrudes upward along its width in the area corresponding to the heel to form a first groove with an opening facing downward. The width of the first groove gradually increases downward. Two first support plates extend outward from the free ends of the two groove walls of the first groove, respectively, away from each other. It can be seen that in the area corresponding to the heel, the lowest point of the first support plate is lower than the lowest point of the main body, ensuring that the first support plate lands on the ground relative to the main body. Compared with the entire heel area of ​​the foot landing on the ground, energy loss is smaller. Since the width of the first groove gradually increases downward, the first groove is deformed under pressure during running. During the subsequent push-off, a rebound force is generated. Therefore, in this technical solution, the first support plate and the first groove form a multi-layered rebound force, thereby achieving better energy transfer efficiency, lower impact force, better rebound, and less running force loss, thus improving sports efficiency and providing excellent cushioning performance. In addition, the main body made of carbon fiber can improve the bending stiffness of the sole, thereby reducing the bending time of the sole, making it faster and safer during start-up and running.

[0017] 2. In technical solution two, the main body protrudes upward along its width in the area corresponding to the forefoot, forming a second groove with an opening facing downward. The width of the second groove gradually increases downward. Two second support plates extend outward from opposite ends of the two groove walls of the second groove. It can be seen that in the area corresponding to the forefoot, the lowest point of the second support plate is lower than the lowest point of the main body, ensuring that the second support plate lands on the ground relative to the main body, resulting in less energy loss compared to the entire forefoot area of ​​the foot landing on the ground. Because the width of the second groove gradually increases downward, the second groove is deformed under pressure during running, generating a rebound force during the subsequent push-off. Therefore, in this technical solution, the second support plate and the second groove form a multi-layered rebound force. The running gait generally involves the outer waist contacting the ground first, pressing down firmly, then transitioning to the inner waist, and finally lifting off the ground by the toes. Therefore, the outer second support plate lands first during running, providing better support for the outer waist of the foot. During the subsequent foot contact, the foot will press down on the main body. In the forefoot section, the height difference between the forefoot portion of the plate and the second support plate on the outer side allows the second groove to press down and rebound. During the transition to the inner waist, as the toes push off the ground, the forefoot portion of the plate and the second support plate on the inner side again cause the second groove to press down and rebound. This results in two rebounds during the forefoot's push-off and take-off, thus improving the carbon plate's resilience. Furthermore, the structure of the first groove and two first support plates on the rear side, combined with the structure of the second recess and two second support plates on the front side, creates two rolling structures on the front and rear sides of the carbon plate. This rolling structure avoids the impact and loss when the entire foot touches the ground, allowing for rapid rolling and propulsion through a curved design. This results in a faster transition from foot to forefoot push-off during running, converting every bit of landing energy into forward propulsion. This further achieves better energy transfer efficiency, lower impact, and better elasticity, reducing running power loss and improving exercise efficiency.

[0018] 3. In technical solution three, the structural design of the main body ensures good support for the forefoot, arch, and heel, guaranteeing the stability of various parts of the foot, thereby improving wearing comfort and simplifying processing. The arch area protrudes upward along its width to form a third groove with an opening facing downward. The width of the third groove gradually increases downward, and the depth of the third groove is greater than the depth of the second groove, which is greater than the depth of the first groove. This design is more ergonomic and ensures good support for the forefoot while achieving good rebound. More importantly, the above design makes the structure of the forefoot, arch, and heel areas form a lever structure, with the arch area as the fulcrum of the lever structure. In a running posture where the heel strikes first, the rebound force of the heel area is facilitated to quickly transfer to the forefoot through the arch area, further making the speed of the foot's transition to the forefoot push-off action faster during running.

[0019] 4. In technical solution four, the addition of reinforcing ribs increases the strength of the carbon plate arch area and makes the arch area a more obvious fulcrum in the lever structure, thereby further improving the speed of the human foot transitioning to the forefoot extension action.

[0020] 5. In technical solution five, the forefoot area is concave downwards in the front-to-back direction, the arch area is convex upwards in the front-to-back direction, and the heel area is concave downwards in the front-to-back direction, so that the front and rear ends of the carbon plate are both raised upwards, making the two rolling structures at the front and rear of the carbon plate more prominent, avoiding energy loss from full-foot contact with the ground, and making the landing speed to push-off speed faster during running, and the speed of the human foot transitioning to the forefoot push-off action during running is faster; the front and rear ends of the second support plate are smoothly transitioned with the body, which is more conducive to achieving a rapid transition between the second support plate and the forefoot area, and is also more aesthetically pleasing.

[0021] 6. In technical solution six, since the carbon fiber strip with an orientation of 0° relative to the center line is a relatively rigid segment and the carbon fiber strip with an orientation of 90° relative to the center line is a relatively flexible segment, the first carbon fiber unit can improve the torsional resistance of the carbon plate, and the second carbon fiber unit can improve the rigidity and support of the body. The above arrangement can make the carbon plate have a certain rigidity without being too rigid, thus having a certain elasticity, so that the carbon plate can maintain a balance between rigidity and elasticity, thereby playing a role in pushing and accelerating.

[0022] 7. In technical solution seven, the present invention also provides a sports shoe sole, which adopts the above-mentioned body and has the same technical effect as the above-mentioned technical solution.

[0023] 8. In technical solution eight, the carbon plate is attached to the bottom of the receiving groove of the upper midsole and the upper surface of the lower midsole, ensuring the interaction between the carbon plate and the ground; when the upper midsole is attached to the lower midsole, the inner and outer sides of the midsole form openings corresponding to the first support piece, allowing the user to see the first support piece from the inner or outer side of the sole, enhancing the technological feel of the sole and providing deformation space for the first support piece.

[0024] 9. In technical solution nine, due to the rolling structure of the main body, the sides of the foot are prone to being suspended relative to the middle part, and are prone to twisting inward or outward during running. The upper midsole is concave downward along its front-back direction and width direction to form a concave area suitable for accommodating the foot, effectively wrapping the foot and avoiding sprains during exercise; the outsole design allows the sole to have more wear-resistant and anti-slip functions.

[0025] 10. In technical solution ten, the present invention also provides a sports shoe, which adopts the above-mentioned sole and has the same technical effect as the above-mentioned technical solution. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the carbon plates in Embodiments 1-4 of the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the carbon plates in Embodiments 1-4 of the present invention. Figure 2 ;

[0029] Figure 3 This is a side view of the carbon plate of Embodiments 1-4 of the present invention;

[0030] Figure 4 This is a cross-sectional view of the carbon plate at the heel of Embodiments 1-4 of the present invention;

[0031] Figure 5 This is a cross-sectional view of the carbon plate at the forefoot of Embodiments 1-4 of the present invention;

[0032] Figure 6 The pressures corresponding to pressing down 3mm, 5mm, 6mm, 7.5mm and 10mm on the forefoot, arch and heel of the carbon plate in Embodiments 1-4 of the present invention, respectively;

[0033] Figure 7 The maximum force values ​​of the carbon plate in Embodiments 1-4 of the present invention when pressing down 6mm on the forefoot, arch, and heel, and the energy return rate corresponding to the maximum force values ​​are shown.

[0034] Figure 8 This is an exploded view of the sole of the shoe in Embodiment 5 of the present invention. Figure 1 ;

[0035] Figure 9 This is an exploded view of the sole of the shoe in Embodiment 5 of the present invention. Figure 2 ;

[0036] Figure 10 This is a schematic diagram of the athletic shoe in Embodiment 6 of the present invention.

[0037] Explanation of key figure labels:

[0038] Body 10; Forefoot area 11; Second groove 111; Arch area 12; Third groove 121; Reinforcing rib 122; Heel area 13; First groove 131; First support plate 20; Second support plate 30; Carbon plate 100; Midsole 200; Upper midsole 40; Receiving groove 41; Recessed area 42; Lower midsole 50; Side opening 201; Outsole 300. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0041] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0042] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0043] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0044] Example 1

[0045] See Figure 1-5 , Figure 1-5 A carbon plate 100 for athletic shoe soles is shown, which is integrally laid with carbon fiber. The carbon plate 100 includes a body 10, two first support plates 20 and two second support plates 30.

[0046] The main body 10 comprises, from front to back, a continuous forefoot area 11, an arch area 12, and a heel area 13. The forefoot area 11 is concave downwards in the front-to-back direction, the arch area 12 is convex upwards in the front-to-back direction, and the heel area 13 is concave downwards in the front-to-back direction. This structural design of the main body 10 ensures good support for the forefoot, arch, and heel, guaranteeing stability of all parts of the foot and improving wearing comfort. Furthermore, the carbon plate 100's front and rear ends are both curved upwards, avoiding energy loss from full-foot contact with the ground and resulting in faster landing and push-off speeds during running, and a faster transition from foot strike to forefoot push-off during running. The forefoot area 11 typically corresponds to the toes and the joints connecting the metatarsals and phalanges. The forefoot area 11, arch area 12, and heel area 13 are not intended to define precise areas of the footwear components, but rather to represent their approximate relative areas.

[0047] The body 10 protrudes upward along its width in the region corresponding to the heel to form a first groove 131 with an opening facing downward. That is, the first groove 131 is formed in the heel region 13 of the body 10, and the width of the first groove 131 gradually increases downward (see [reference]). Figure 4 Two first support plates 20 extend outward from the free ends of the two groove walls of the first groove 131, respectively, away from each other. In this embodiment, each first support plate 20 extends in the front-to-back direction, and neither the front nor the rear end of each support plate extends beyond the heel area 13. It can be seen that in the area corresponding to the heel, the lowest point of the first support plate 20 is lower than the lowest point of the body 10, ensuring that the first support plate 20 lands on the ground relative to the body 10, resulting in less energy loss compared to the entire heel area 13 of the foot landing on the ground. Since the width of the first groove 131 gradually increases downward, the first groove 131 is deformed under pressure during running, generating a rebound force during the subsequent push-off. Therefore, in this technical solution, the first support plate 20 and the first groove 131 form a multi-layered rebound force, thereby achieving better energy transfer efficiency, lower impact force, better rebound, and less running force loss, thus improving exercise efficiency and providing excellent shock absorption performance.

[0048] In this embodiment, preferably, the body 10 protrudes upward along its width in the area corresponding to the forefoot to form a second groove 111 with an opening facing downward. That is, the second groove 111 is formed in the forefoot area 11 of the body 10, and the width of the second groove 111 gradually increases downward (see...). Figure 5 The two second support plates 30 extend outward from opposite ends of the two groove walls of the second groove 111.

[0049] It can be seen that in the area corresponding to the forefoot, the lowest point of the second support plate 30 is lower than the lowest point of the main body 10, ensuring that the second support plate 30 lands first relative to the main body 10, resulting in less energy loss compared to the entire forefoot area 11 of the foot landing on the ground. Since the width of the second groove 111 gradually increases downwards, it deforms under pressure during running, generating a rebound force during the subsequent push-off. Therefore, in this technical solution, the second support plate 30 and the second groove 111 form a multi-layered rebound force. The running gait generally involves the outer waist striking the ground first, pressing down firmly, then transitioning to the inner waist, and finally the foot... When the toes push off the ground, the outer second support plate 30 lands first during running, providing better support for the outer waist of the foot. During the subsequent foot strike, the foot presses down on the forefoot of the main body 10. The height difference between the forefoot of the main body 10 and the outer second support plate 30 causes the second groove 111 to press down and rebound. When transitioning to the inner waist, during the toes push off the ground, the forefoot of the main body 10 and the inner second support plate 30 again cause the second groove 111 to press down and rebound. In this way, the main body 10 rebounds twice during the push-off and take-off, thereby improving the resilience of the carbon plate 100.

[0050] Furthermore, the structure of the first groove 131 on the rear side and the two first support plates 20 cooperates with the structure of the second recess and the two second support plates 30 on the front side, so that the front and rear sides of the carbon plate 100 form two rolling structures. This rolling structure is more prominent due to the upturn of the front and rear ends of the carbon plate 100. This rolling structure can avoid the impact and loss when the whole foot touches the ground, and roll quickly. Through the curved shape, it can achieve rapid rolling propulsion. When running, the speed of the human foot transitioning to the forefoot push-off action is faster, so that every bit of landing energy can be converted into a propulsive force to drive forward. This further achieves better energy transfer efficiency, lower impact force and better elasticity, reduces running power loss, and thus improves sports efficiency.

[0051] Among them, the two second support plates 30 correspond to the inner and outer sides of the forefoot of the supporting foot, respectively. In specific implementation, the front and rear ends of the two second support plates 30 are smoothly transitioned with the body 10, which is conducive to achieving a quick transition between the second support plates 30 and the forefoot area 11, and is more aesthetically pleasing.

[0052] In this embodiment, preferably, the arch area 12 protrudes upward along its width to form a third groove 121 with an opening facing downward. The width of the third groove 121 gradually increases downward. The depth of the third groove 121 is greater than the depth of the second groove 111, and the depth of the second groove 111 is greater than the depth of the first groove 131. The above arrangement is more in line with ergonomics. The structure of the forefoot area 11, the arch area 12, and the heel area 13 forms a lever structure. The arch area 12 is the fulcrum of the lever structure. In the running posture where the heel lands first, it is also beneficial for the rebound force of the heel area 13 to quickly transition to the forefoot through the arch area 12, further improving the speed of the human foot transitioning to the forefoot push-off action during running.

[0053] In this embodiment, preferably, the upper surface of the arch area 12 is provided with a plurality of reinforcing ribs 122 extending from front to back, and the reinforcing ribs 122 are arranged at intervals along the width direction of the carbon plate 100. The setting of the reinforcing ribs 122 increases the strength of the arch area 12 of the carbon plate 100 and makes the fulcrum effect of the arch area 12 in the lever structure more obvious, thereby further improving the speed of the human foot transitioning to the forefoot extension action.

[0054] In this embodiment, the carbon plate 100 is provided with a first fiber unit and at least three second fiber units sequentially along its thickness direction. The orientation of the heel portion of the sole is 0°. The first fiber unit is formed by bonding two layers of carbon fiber strips symmetrical about the center line, with one layer of carbon fiber strips oriented at 45° relative to the center line. The second fiber unit is formed by bonding two layers of carbon fiber strips symmetrical about the center line, with one layer of carbon fiber strips oriented at 19° relative to the center line. Specifically, there are three second fiber units. The carbon plate 100 is provided with eight layers of carbon fiber strips sequentially along its thickness direction, with the orientations of the eight layers of carbon fiber strips relative to the center line being 45°, -45°, 19°, -19°, 19°, -19°, 19°, and -19° respectively.

[0055] During the fabrication of carbon fiber plate 100, multiple layers of carbon fiber strips or interwoven carbon fiber strips are pre-impregnated with an adhesive resin such as a thermosetting resin or a thermoplastic resin, which bonds the multiple layers of carbon fiber strips together. Carbon fiber plate 100 is formed by an automated fiber placement process. For example, the fiber placement head can travel in a 0° direction to deposit carbon fiber strips in the 0° direction, resulting in a 0° orientation of the carbon fiber strips. For other orientations, the fiber placement head can be redirected. This part is prior art and will not be elaborated upon in this embodiment. After the layers of carbon fiber strips are placed, they are hot-pressed to obtain carbon fiber plate 100.

[0056] Specifically, the carbon plate 100 is made of multiple layers of carbon fiber prepreg, wherein the thickness of a single layer of carbon fiber is 0.10-0.2mm, the thickness of the carbon fiber strips at 45° and -45° is 0.1mm, and the thickness of the carbon fiber strips at 19° and -19° is 0.15mm. Since the carbon fiber strips oriented at 0° relative to the centerline are relatively rigid, and those oriented at 90° relative to the centerline are relatively flexible, the carbon plate 100 is composed of eight layers of carbon fiber strips with orientations of 45°, -45°, 19°, -19°, 19°, -19°, 19°, and -19° respectively. The forefoot area 11, arch area 12, and heel area 13 of the body 10, as well as the two first support plates 20 and two second support plates 30, are all similarly composed of these eight layers of carbon fiber strips. The 45° and -45° carbon fiber strips improve the torsional resistance of the carbon plate 100, while the 19° and -19° carbon fiber strips improve its rigidity and support. This arrangement allows the carbon plate 100 to possess both sufficient rigidity and elasticity, maintaining a balance between rigidity and elasticity, thus providing propulsion and acceleration. The resin is epoxy resin, with an epoxy resin content of 42%.

[0057] Example 2

[0058] The carbon plate 100 in Example 2 has the same structure as that in Example 1, except that the carbon plate 100 has a first fiber unit, three second fiber units, and one first fiber unit arranged sequentially along its thickness direction. That is, the carbon plate 100 has 10 layers of carbon fiber strips arranged sequentially along its thickness direction, and the orientation of the 10 layers of carbon fiber strips relative to the center line is 45°, -45°, 19°, -19°, 19°, -19°, 19°, -19°, 45°, and -45° respectively.

[0059] Example 3

[0060] The carbon plate 100 in Example 3 has the same structure as that in Example 2. The difference is that the forefoot area 11, arch area 12 and two second support plates 30 of the carbon plate 100 have 10 layers of carbon fiber strips as in Example 2, and the heel area 13 and two first support plates 20 of the carbon plate 100 have 8 layers of carbon fiber strips as in Example 1.

[0061] Example 4

[0062] The carbon plate 100 in Example 4 has the same structure as that in Example 2. The difference is that the forefoot area 11, arch area 12 and two second support plates 30 of the carbon plate 100 have 10 layers of carbon fiber strips as in Example 2, and the heel area 13 and two first support plates 20 of the carbon plate 100 have 6 layers of carbon fiber strips. The orientation of the 6 layers of carbon fiber strips relative to the center line is 45°, -45°, 19°, -19°, 19° and -19° respectively.

[0063] Figure 6 The pressures corresponding to pressing down 3mm, 5mm, 6mm, 7.5mm and 10mm on the forefoot, arch and heel of the carbon plate 100 in Examples 1-4 are shown. Figure 7 The maximum force values ​​for the forefoot, arch, and heel under 6mm pressure in Examples 1-4 are shown, along with the corresponding energy return rates. The energy return rate is the ratio of the upward rebound force of the carbon plate 100 under maximum pressure to the maximum pressure. During testing, the carbon plate 100 was 1.2mm thick. The forefoot test location was the line connecting the points on the carbon plate 100 at 73% (inner side) and 65% (outer side) of its total length from back to front, with a line length of 104-105mm. The arch test location was the line segment on the carbon plate 100 at 45% of its total length from back to front (length 55-56mm). The heel test location was the line segment on the carbon plate 100 at 20% of its total length from back to front (length 75-76mm).

[0064] from Figure 6 and Figure 7 The experimental data shows that the energy return rate of the carbon plate 100 in Examples 1-4, with a forefoot compression of 6mm, exceeds 80%, the energy return rate with an arch compression of 6mm is greater than 87%, and the energy return rate with a heel compression of 6mm exceeds 59%. This is beneficial for the carbon plate 100 to play a role in propulsion and acceleration during exercise. Among them, Example 2 has the lowest energy return rate at the heel, while Example 4 has the best energy return rate at the heel. It can be seen that the layering of carbon fibers at the heel has a significant impact. The carbon plate at the heel should not be too stiff or too flexible; a suitable balance of stiffness and elasticity results in the optimal energy return rate.

[0065] Example 5

[0066] See Figure 8-10 The present invention also provides a sports shoe sole, which is formed from front to back into a forefoot portion, an arch portion, and a heel portion, including a midsole 200, a carbon plate 100 of any one of embodiments 1-4, and an outsole 300. The carbon plate 100 is embedded in the midsole 200, and the outsole 300 is attached to the underside of the midsole 200. The sports shoe sole of this embodiment has the same technical effects as that of embodiments 1-4.

[0067] Specifically, the midsole 200 includes an upper midsole 40 and a lower midsole 50 that can be fitted together. The upper midsole 40 is provided with a receiving groove 41 that matches the shape of the carbon plate 100. The carbon plate 100 is adapted to be received in the receiving groove 41 and fitted to the bottom of the receiving groove 41. The shape of the upper surface of the lower midsole 50 matches the shape of the carbon plate 100. When the upper midsole 40 is fitted to the lower midsole 50, the inner and outer sides of the midsole 200 corresponding to the first support piece 20 form a side opening 201. The upper surface of the lower midsole 50 is fitted to the lower surface of the carbon plate 100. In this way, the interaction between the carbon plate 100 and the ground is ensured, and it is beneficial to form openings corresponding to the first support piece 20 on the inner and outer sides of the sole. It also allows sufficient movement space in the area of ​​the upper midsole 40 corresponding to the first support piece 20, resulting in better rebound. Users can observe the carbon plate 100 from the outside, which enhances the technological feel of the shoe.

[0068] The upper midsole 40 is recessed downwards along its front-to-back and width directions to form a recessed area 42 suitable for accommodating the foot. Due to the rolling structure of the body 10, the sides of the foot are prone to being suspended relative to the middle part, and are prone to twisting inwards or outwards during running. The upper midsole 40 is recessed downwards along its front-to-back and width directions to form a recessed area 42 suitable for accommodating the foot, which effectively wraps the foot and avoids sprains during exercise.

[0069] Preferably, the upper insole 40 is made of a first material, and the lower insole 50 is made of a second material. The first material and the second material have different elastic properties. The upper insole 40 and the lower insole 50 are made of EVA or polyurethane material. Figure 8-9 The two independent structures shown, the upper midsole 40 and the lower midsole 50, can also be directly integrated from corresponding materials. The outsole 300 can be made of appropriate materials according to functional requirements, such as rubber with anti-slip and wear-resistant functions. This invention does not impose special restrictions on the materials and bonding methods of the midsole 200 and the outsole 300; materials and bonding methods well known to those skilled in the art for preparing footwear products can be used.

[0070] Example 6

[0071] This invention also relates to a sports shoe, see [link / reference]. Figure 10 It adopts the sports shoe sole of Example 5 and has the same technical effect as the sports shoe sole of Example 5.

[0072] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A carbon fiber plate (100) for use in the sole of athletic shoes, which is integrally laid with carbon fiber, characterized in that, The carbon plate (100) includes a body (10) and two first support plates (20). The body (10) protrudes upward along its width in the area corresponding to the heel to form a first groove (131) with an opening facing downward. The width of the first groove (131) gradually increases downward. The two first support plates (20) extend outward from opposite ends of the two groove walls of the first groove (131). The lowest point of the first support plate (20) is lower than the lowest point of the body (10) in the heel area (13). It also includes two second support pieces (30); the body (10) protrudes upward along its width direction in the area corresponding to the forefoot to form a second groove (111) with the opening facing downward. The width of the second groove (111) gradually increases downward. The two second support pieces (30) extend outward from opposite sides of the free ends of the two groove walls of the second groove (111). The body (10) is provided with a forefoot area (11), an arch area (12) and a heel area (13) connected together from front to back. The first groove (131) and the second groove (111) are formed in the heel area (13) and the forefoot area (11) respectively.

2. The carbon plate (100) for the sole of a sports shoe as described in claim 1, characterized in that, The arch area (12) protrudes upward along its width direction to form a third groove (121) with an opening facing downward. The width of the third groove (121) gradually increases downward. The depth of the third groove (121) is greater than the depth of the second groove (111), and the depth of the second groove (111) is greater than the depth of the first groove (131).

3. The carbon plate (100) for the sole of a sports shoe as described in claim 2, characterized in that, The upper surface of the arch area (12) is provided with a number of reinforcing ribs (122) extending from front to back, and each reinforcing rib (122) is arranged at intervals along the width direction of the carbon plate (100).

4. The carbon plate (100) for the sole of a sports shoe as described in claim 3, characterized in that, The forefoot area (11) is concave downwards in the front-back direction, the arch area (12) is convex upwards in the front-back direction, and the heel area (13) is concave downwards in the front-back direction; the front and rear ends of the second support plate (30) are smoothly transitioned to the body (10).

5. A carbon plate (100) for the sole of a sports shoe as described in claim 4, characterized in that, The carbon plate (100) is provided with a first fiber unit and at least three second fiber units in sequence along its thickness direction. The orientation of the heel part of the sole is 0°. The first fiber unit is made of two layers of carbon fiber strips symmetrical about the center line bonded together, and one layer of carbon fiber strips is oriented at 45° relative to the center line. The second fiber unit is made of two layers of carbon fiber strips symmetrical about the center line bonded together, and one layer of carbon fiber strips is oriented at 19° relative to the center line.

6. A sports shoe sole, which forms a forefoot portion, an arch portion, and a heel portion from front to back, characterized in that, It includes a midsole (200) and a carbon plate (100) as claimed in any one of claims 1-5, the carbon plate (100) being embedded within the midsole (200).

7. The sole of a sports shoe as described in claim 6, characterized in that, The midsole (200) includes an upper midsole (40) and a lower midsole (50) that can be fitted together. The bottom surface of the upper midsole (40) is provided with a receiving groove (41) that is adapted to the shape of the carbon plate (100). The carbon plate (100) is adapted to be received in the receiving groove (41) and fitted to the bottom of the receiving groove (41). The shape of the upper surface of the lower midsole (50) is adapted to the shape of the carbon plate (100). When the upper midsole (40) is fitted to the lower midsole (50), the lower surface of the carbon plate (100) is fitted to the upper surface of the lower midsole (50), and the inner and outer sides of the midsole (200) corresponding to the first support piece (20) form side openings (201).

8. The sole of a sports shoe as described in claim 7, characterized in that, It also includes an outsole (300) that fits against the lower surface of the lower insole (50); the upper insole (40) is recessed downward along its front-to-back and width directions to form a recessed area (42) suitable for accommodating the foot.

9. A type of athletic shoe, characterized in that, It uses the sole of a sports shoe as described in any one of claims 6-8.

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