A rigid component for a shoe sole, a shoe sole and a shoe

Abstract

This invention discloses a rigid component for a shoe sole, which is a rigid plate for covering the sole of the foot, consisting of a forefoot section, an arch section, and a heel section connected longitudinally. The forefoot section extends curvedly from the corresponding toe to the front end of the arch section. The arch section extends curvedly from the corresponding arch of the foot to the front end of the heel section in the opposite direction to the forefoot section. The heel section extends from the corresponding heel to the rear end of the arch section. The characteristic feature is that the curvature from the forefoot section to the arch section is 20° to 30°. At this curvature, when the rigid component is placed in the sole and deformed by the user pushing off the ground, it applies an upward and forward elastic force to the user. It can apply a large force in the early stage of deformation and maintain the stability of the applied force, helping the user to exert force in a more effortless and efficient way, thereby enabling the user to achieve faster speed.

Description

Technical Field

[0001] This invention relates to the field of footwear technology, specifically to a rigid component for shoe soles, a shoe sole, and a shoe. Background Technology

[0002] Skeleton is an ice sport with top speeds reaching 140 kilometers per hour. Before the start, athletes line up orderly at the starting line. When the referee signals the start, the athletes quickly push their skeletons forward, covering a distance of 50 meters to accelerate. The entire process from the start to boarding the skeleton must be completed within 30 seconds. Throughout the competition, all athletes must rely solely on their own strength and are not allowed to use any external objects or forces. Skeleton rules stipulate that athletes must run in a prone position during the race, with power coming from the athlete's own weight and the force exerted by the athlete on the skeleton. Directional control is achieved by the athlete moving their body. Therefore, to achieve a high initial velocity, athletes need to run faster during the approach run. Existing skeleton boots typically have steel spikes on the soles to provide traction, but the soft ground during the approach run does not provide adequate support, making it difficult for athletes to apply force effectively. 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 rigid component for a shoe sole, a shoe sole, and a shoe. The rigid component has a curvature limited to between 20° and 30°. At this curvature, when the rigid component is placed in the shoe sole and deforms due to a user pushing off the ground, it applies an upward and forward elastic force to the user. Furthermore, it can apply a large force in the early stages of deformation and maintain this force stability, helping the user to exert force more efficiently and effectively, thereby enabling the user to achieve greater speed.

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

[0005] A rigid component for a shoe sole is a rigid plate for covering the sole of the foot, consisting of a forefoot section, an arch section, and a heel section connected longitudinally. The forefoot section extends in a curve from the corresponding toe to the front end of the arch section. The arch section extends in a curve in the opposite direction to the forefoot section from the arch of the foot to the front end of the heel section. The heel section extends from the corresponding heel to the rear end of the arch section. The characteristic feature is that the curvature from the forefoot section to the arch section is 20° to 30°.

[0006] Furthermore, the curvature from the forefoot segment to the arch segment is 22° to 26°.

[0007] Furthermore, the curvature from the forefoot segment to the arch segment is 25°.

[0008] Furthermore, the first tangent is formed by taking the point of maximum curvature of the arch segment as the starting point and being tangent to the forefoot segment; the second tangent is formed by taking the tangent at the point where the forefoot segment meets the metatarsal bone and the toe; the angle between the first tangent and the second tangent is the curvature.

[0009] Furthermore, the rigid component is made of carbon fiber material.

[0010] In addition, the present invention provides a shoe sole comprising a midsole, wherein the midsole has a built-in rigid component as described in any of the preceding claims.

[0011] Furthermore, the insole is composed of an upper insole, a lower insole, and the rigid component located between the upper insole and the lower insole.

[0012] In addition, the present invention also provides a shoe comprising a sole as described in any of the preceding claims.

[0013] 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:

[0014] The rigid component for shoe soles provided by the present invention has a curvature of 20° to 30° from the forefoot to the arch, with a preferred angle range of 22° to 26°, particularly 25°. At this curvature, when the rigid component is placed in the sole and deformed by the user pushing off the ground, it applies an upward and forward elastic force to the user. It can apply a large force in the early stage of deformation and maintain the force application stably, helping the user to exert force in a more effortless and efficient manner, thereby enabling the user to achieve faster speed.

[0015] While existing technologies suggest that the curvature of a rigid component cannot be increased indefinitely, generally increasing the curvature can effectively enhance the elasticity of the rigid component during deformation, thereby helping the user achieve greater speed. However, this invention, in contrast to existing technologies, sets a smaller curvature, specifically limiting it to between 20° and 30°. Within this range, the rigid component can help the user apply force more effectively through its upward and forward elasticity after bending. In cases of large-angle bending, the force applied by the rigid component increases linearly, resulting in lower force on the athlete in the initial stage of deformation, only increasing when the athlete pushes off the ground and the foot leaves the ground. This not only reduces the overall force compared to cases with smaller curvature but also leads to a decrease in the user's speed. Therefore, given the opposite technical teachings in existing technologies, this invention creatively reduces the curvature of the rigid component and keeps it within a specific range, thereby enabling the user to achieve greater speed. Attached Figure Description

[0016] 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.

[0017] Figure 1 A side view of an embodiment of a rigid component for a shoe sole provided by the present invention;

[0018] Figure 2 for Figure 1 The deformation force analysis diagram of the rigid component shown;

[0019] Figure 3 This is a diagram showing the deformation force analysis of a rigid component with a bending angle greater than 30° for comparison.

[0020] Explanation of key figure labels:

[0021] Forefoot segment 10; Corresponding to toes 11; Corresponding to metatarsals 12; Arch segment 20; Heel segment 30. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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."

[0027] See Figure 1 , Figure 1 This diagram illustrates a structural schematic of an embodiment of a rigid component for a shoe sole provided by the present invention. The rigid component is a rigid plate for covering the sole of the foot, formed by longitudinally connecting a forefoot section 10, an arch section 20, and a heel section 30. In this embodiment, it can be made of carbon fiber material, forming a carbon plate or carbon sheet. In other embodiments, the rigid component can also be made of glass fiber mixed with carbon fiber, etc. Carbon plates made of carbon fiber material possess a certain degree of elasticity while also having sufficient rigidity, better meeting the needs of the user.

[0028] The forefoot section 10 of the rigid component extends in a curve from the corresponding toe 11 to the front end of the arch section 20. The arch section 20 extends in a curve in the opposite direction to the forefoot section 10 to the front end of the heel section 30. The heel section 30 extends from the corresponding heel to the rear end of the arch section 20. The forefoot section 10 also includes a corresponding metatarsal section 12 between the corresponding toe 11 and the front end of the arch section 20. The corresponding metatarsal section 12 is the section of the forefoot section 10 with the greatest degree of curvature.

[0029] The flexion of the forefoot segment 10 to the arch segment 20 is set to 20° to 30°.

[0030] In particular, the flexion of the forefoot segment 10 to the arch segment 20 can also be set to 22° to 26°.

[0031] In this embodiment, refer to Figure 1 The flexion of the forefoot segment 10 to the arch segment 20 is set to 25°.

[0032] Among them, reference Figure 1 The first tangent is formed by taking the point where the arch of the foot 20 has the greatest curvature as the starting point and the forefoot segment 10 as the tangent. The second tangent is formed by the tangent at the point where the forefoot segment 10 is tangent to the point where the metatarsal bone 12 and the toe 11 are separated. The angle between the first tangent and the second tangent is the curvature mentioned above.

[0033] To verify the effectiveness of the rigid component in actual use, this embodiment verifies the force applied to the rigid component in a bent state, as detailed in the following reference. Figure 2 .

[0034] Figure 2 The left image shows the force applied to the rigid component when it is in a moderate bending state, the right image shows the force applied to the rigid component when it is in a maximum bending state, and the top image shows the force changes during the bending process of the rigid component. In the top image, the upper line represents the force applied in the vertical direction, and the lower line represents the force applied in the horizontal direction.

[0035] In addition, a pair of proportions are provided, please refer to the details. Figure 3 , Figure 3 The rigid component in this embodiment is identical to the rigid component in the above embodiment, except for its curvature, and its curvature is configured to be 35°. Figure 3 The upper-middle image shows the changes in force applied during the bending process of the rigid component in this comparison.

[0036] Reference Figure 2 and Figure 3 It can be seen that, for the rigid component with a larger degree of curvature in the comparison, the force applied during the bending process also includes a backward component. This backward component obviously interacts with the forward force generated by the rigid component in the horizontal direction, reducing the force exerted by the rigid component on the user's forward propulsion. At the same time, due to the backward rebound, it also causes discomfort to the user, further reducing the user's speed. In addition, referring to the graph of the force change, it can be seen that when the curvature is small, the force applied by the rigid component increases rapidly to a large value in the initial stage, and then maintains a relatively stable level. This keeps the user's force in a relatively stable state. However, when the curvature is large, the force applied by the rigid component changes in a linear manner, which means that the user can only receive the maximum force when the bend is at its maximum, and this force is obviously unstable.

[0037] Furthermore, during the verification process, the peak values ​​of the vertical and horizontal accelerations of the rigid component provided in this embodiment when it bounces back after bending were 37425 mm / s². 2 and 11236mm / s 2 In the comparative example, the peak vertical and horizontal accelerations of the rigid component when it bounces back after bending are 69971 mm / s². 2 and 15623mm / s 2Therefore, it can be seen that a rigid component with a larger degree of curvature can provide a larger force, which is why the existing technology believes that the greater the curvature, the better the speed increase effect for the user. Obviously, although a larger curvature can increase the force applied, the larger curvature causes a backward component force, which will cancel out the applied force, resulting in the user not being able to obtain a good forward thrust. However, the rigid component with a smaller degree of curvature used in this embodiment reduces or even eliminates this backward component force. Although the magnitude of the force is slightly reduced, it actually allows the user to better increase their running speed overall.

[0038] As can be seen from the above verification results, the rigid component with a smaller angle provided by the present invention overcomes the technical bias in the prior art that the larger the bending angle of the rigid component, the better the speed improvement effect on the user. The rigid component with a smaller angle has better wearing comfort, while effectively improving the user's running speed.

[0039] In addition, the present invention also provides a shoe sole, the shoe sole including a midsole, the midsole including an upper sole, a lower sole and a rigid component located between the upper sole and the lower sole, the three components being assembled by adhesive bonding to form the midsole.

[0040] Furthermore, the present invention also provides a shoe comprising the aforementioned sole. The shoe with this sole can effectively improve the user's running speed by utilizing the rigid components built into the midsole within the sole.

[0041] The present invention provides a rigid component for a shoe sole, a shoe sole, and a shoe. The curvature of the rigid component is limited to between 20° and 30°. At this curvature, when the rigid component is placed in the shoe sole and deformed by the user pushing off the ground, it applies an upward and forward elastic force to the user. It can apply a large force in the early stage of deformation and maintain the force application stably, helping the user to exert force in a more effortless and efficient way, thereby enabling the user to achieve faster speed.

[0042] 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 rigid component for a shoe sole, comprising a rigid plate for covering the sole of the foot, consisting of a forefoot section, an arch section, and a heel section connected longitudinally, wherein the forefoot section extends in a curve from the corresponding toe to the front end of the arch section, the arch section extends in a curve in the opposite direction to the forefoot section at the corresponding arch of the foot to the front end of the heel section, and the heel section extends from the corresponding heel towards the rear end of the arch section, characterized in that... The curvature from the forefoot segment to the arch segment is 20° to 30°. The first tangent is formed by taking the point of maximum curvature of the arch segment as the starting point and being tangent to the forefoot segment. The second tangent is formed by taking the tangent at the point where the forefoot segment meets the metatarsal bone and the toe. The angle between the first tangent and the second tangent is the curvature.

2. A rigid component for a shoe sole as described in claim 1, characterized in that, The curvature from the forefoot to the arch is 22° to 26°.

3. A rigid component for a shoe sole as described in claim 2, characterized in that, The curvature from the forefoot to the arch is 25°.

4. A rigid component for a shoe sole as described in claim 1, characterized in that, The rigid component is made of carbon fiber material.

5. A shoe sole, including a midsole, characterized in that, The midsole has a built-in rigid component as described in any one of claims 1-4.

6. A shoe sole as described in claim 5, characterized in that, The insole is composed of an upper insole, a lower insole, and a rigid component located between the upper and lower insoles.

7. A type of shoe, characterized in that, Including a shoe sole as described in claim 5 or 6.

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