Improved heel-free running shoe sole

Abstract

The utility model discloses an improved heel-free running shoe sole which comprises a sole body, the sole body comprises an outsole and a midsole, a supporting plate is arranged in the midsole, and the position, making contact with a datum plane and closest to the front end of a half sole part, of the sole body is a warping part. The distance from the upwarp part to the front end of the half sole part of the sole body is 28%-35% of the length of the sole body, and the linear distance between the horizontal plane where the lowest point, corresponding to the upwarp part, of the supporting plate is located and the horizontal plane, located at one end of the half sole part, of the supporting plate is 22 mm-25 mm. The tilting part of the sole body is designed forwards, the heel difference is high, a starting posture can be naturally formed, a starting pedaling and stretching state can be entered in advance when the sole falls to the ground, forward pushing force can be naturally formed, the force of foot muscles can be reduced, more force participates in pedaling and stretching, and due to the fact that no heel design is adopted, the sole directly falls to the ground through the front sole or the middle half sole when the sole falls to the ground. And compared with the traditional heel landing, the ground contact area is increased, the stability is improved, and the probability of eversion during running is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of running shoe technology, and specifically relates to an improved heelless running shoe sole. Background Technology

[0002] When running a marathon, different runners use different running styles, which can generally be divided into three types: heel strike, forefoot strike, and midfoot strike. Among them, professional athletes usually use the forefoot strike, which refers to a running style in which the ball of the toe (the muscle located at the bottom of the forefoot) lands on the ground and bears the weight. Currently, there are also many running shoes on the market designed for marathon running.

[0003] For example, in the Chinese utility model patent with authorization announcement number CN215532060U and title "A Novel Boosting and Shock-Absorbing Shoe Sole", the applicant disclosed a novel boosting and shock-absorbing shoe sole, including a shoe sole body. The shoe sole body includes an outsole and a midsole composited on the outsole. The midsole includes a first midsole and a second midsole composited on the first midsole. A carbon fiber plate is provided between the first midsole and the second midsole. With the shoe sole body placed on a reference plane as a reference position, the position of the forefoot part of the shoe sole body that contacts the reference plane and is closest to the forefoot is the upturned part. The distance from the upturned part to the rear end of the heel part of the shoe sole body is 55%-70% of the length of the shoe sole body. The distance from the upturned part to the upper surface of the shoe sole body is set as A, where A is 25-31mm. The position of the shoe sole body that contacts the reference plane at the heel is set as the rear landing part. The distance from the rear landing part to the upper surface of the shoe sole body is set as B, where B is 28-34mm. The difference between B and A is not greater than 4mm. This invention provides a sole structure that is most effective for professional athletes, achieving an optimal propulsion system.

[0004] While the aforementioned sole provides stable foot support for runners, the pressure point of the carbon fiber plate in the forefoot is positioned relatively close to the arch of the foot. When athletes accelerate, they need to redirect the force from the pressure point to the ball of the toes, allowing the ball of the toes to contact the ground and then accelerate. This can easily lead to slower acceleration. Furthermore, the relatively flat curvature of the forefoot of the carbon fiber plate is not conducive to acceleration using a forefoot-landing running style. The structure of this sole needs further improvement.

[0005] In view of this, the applicant conducted in-depth research on the above-mentioned issues, which led to the occurrence of this case. Summary of the Invention

[0006] The purpose of this invention is to provide an improved heelless running shoe sole with a smooth structure that facilitates acceleration and power generation for forefoot-landing running styles.

[0007] To achieve the above objectives, this utility model adopts the following technical solution:

[0008] An improved heelless running shoe sole includes a sole body, wherein the position of the sole body corresponding to the front of the foot is the forefoot portion, the position of the sole body corresponding to the arch of the foot is the arch portion, and the position of the sole body corresponding to the heel is the heel portion. The sole body includes an outsole and a midsole laminated on the outsole. The midsole includes a lower midsole and an upper midsole laminated on the lower midsole. A support plate is provided between the lower midsole and the upper midsole, the support plate extending from the forefoot portion to the heel portion. The lower midsole and the outsole form a hollow area corresponding to the heel portion, so that the shoe... The front-to-back direction of the sole body is the length direction. Taking the sole body placed on a reference plane as a reference position, the position of the sole body that contacts the reference plane and is closest to the front end of the forefoot is the upturned part. The distance from the upturned part to the front end of the forefoot of the sole body is 28%-35% of the length of the sole body. The support plate gradually bends upward from the lowest point of the upturned part to the front end of the forefoot. The straight-line distance between the horizontal plane where the lowest point of the upturned part of the support plate is located and the horizontal plane at one end of the support plate in the forefoot is 22mm-25mm.

[0009] Furthermore, the distance from the raised portion to the front end of the forefoot portion of the sole body is 32% of the length of the sole body, and the straight-line distance between the horizontal plane of the lowest point of the support plate corresponding to the raised portion and the horizontal plane of the support plate located at one end of the forefoot portion is 23mm.

[0010] Furthermore, the position of the sole body near the contact reference plane of the heel is the rear landing part, the straight distance from the rear landing part to the upper surface of the sole body is set as A, where A is 42-46mm, the straight distance from the raised part to the upper surface of the sole body is set as B, where B is 26-30mm, and the difference between A and B is greater than 14mm and less than 20mm.

[0011] Furthermore, the bottom of the outsole is provided with anti-slip grooves and anti-slip strips corresponding to the raised portion, and the anti-slip strips are arranged at intervals along the width direction of the outsole.

[0012] Furthermore, the lower midsole has a first notch at the position corresponding to the arch of the foot, and a second notch at the position corresponding to the forefoot. Both the first and second notches penetrate the lower midsole.

[0013] Furthermore, the bottom of the lower midsole, corresponding to the position of the arch portion, extends towards the position of the first notch and has a ventilation groove that connects to the first notch. The outsole, corresponding to the positions of the first notch, the second notch, and the ventilation groove, is hollowed out.

[0014] Furthermore, the bottom of the lower layer insole is provided with an anti-slip block corresponding to the position of the hollow area, and the anti-slip block has an anti-slip step in the middle.

[0015] Furthermore, the support plate has a through hole at the position corresponding to the heel portion, and the upper insole and the lower insole are integrally connected at the position of the through hole.

[0016] Furthermore, the lower midsole gradually tapers from the sides towards the center from the arch of the foot towards the heel.

[0017] Furthermore, the support plate is a carbon plate or a nylon plate.

[0018] By adopting the aforementioned design scheme, the beneficial effects of this utility model are:

[0019] In this invention, the upward-curving part of the sole is moved forward, meaning the fulcrum of force is moved forward. This increases the upward curvature (height from the ground) of the midsole and support plate corresponding to the forefoot area, and increases the slope from the front of the forefoot to the upward-curving part, making the forefoot upward curve steeper and more pronounced. This allows the sole to strike the ground quickly, shortening the push-off distance, increasing the push-off rate, reducing the contact time of the sole during running, and improving the rolling feel during running. The support plate is designed with this curvature and embedded in the upper and lower midsole (with the forefoot fulcrum forward and the slope greater). When the user runs forward, the ball of the foot directly serves as the point of force application. Compared to existing technologies, this new design provides faster and stronger feedback force under the same stress, facilitating acceleration. Furthermore, this heelless midsole structure reduces the shoe's weight and creates a slight forward lean when standing, forcing the user to land on their forefoot for a propulsive effect. The landing is direct on the forefoot or mid-forefoot, increasing the contact area compared to traditional heel strikes. This enhances midfoot support, improves midfoot stability in the forefoot and reduces the likelihood of overpronation, making it more efficient for forefoot-strike runners for long distances and conserving energy.

[0020] Furthermore, by increasing the heel difference between the forefoot and heel, the user can enter the starting push-off state earlier when landing, naturally generating forward thrust and reducing the exertion of foot muscles, which helps to reduce the load on the user's calf muscles.

[0021] Furthermore, the bottom of the outsole is provided with an anti-slip area corresponding to the raised part. The anti-slip area has several anti-slip grooves and anti-slip strips, which allows the anti-slip area of ​​the outsole to have inward compression space, thereby improving the anti-slip performance of the outsole while also improving its bending performance.

[0022] Furthermore, the design of the first notch, the second notch, and the ventilation groove not only saves materials and reduces the weight of the sole, but also prevents air from being trapped in the first notch during running.

[0023] Furthermore, anti-slip blocks and anti-slip steps are installed. If a user accidentally slips and falls backward, the anti-slip steps will generate strong friction with the ground, allowing the user to remain stable and thus avoid injury.

[0024] Furthermore, the lower midsole gradually tapers from the arch towards the heel, narrowing towards the center from both sides. This optimizes the structure of the lower midsole and further reduces the weight of the sole. Attached Figure Description

[0025] Figure 1 This is a front view diagram of the cross-section of the sole body of this utility model.

[0026] Figure 2 This is a structural diagram showing the disassembled state of the sole body of this utility model.

[0027] Figure 3 This is a top-view diagram of the sole body of the present invention.

[0028] Figure 4 This is a top view structural diagram of the sole body of this utility model.

[0029] Figure 5 for Figure 3 Enlarged view of point C in the middle.

[0030] In the picture:

[0031] 1-Outsole; 10-Sole body

[0032] 101 - Forefoot; 102 - Arch of the foot;

[0033] 103 - Heel area; 104 - Curved area;

[0034] 105 - The upper surface of the sole body;

[0035] 21 - Lower layer midsole;

[0036] 22 - Upper midsole; 211 - First notch;

[0037] 212 - Second notch; 213 - Ventilation groove;

[0038] 3-Support plate;

[0039] 31 - Through hole; 4 - Hollowed-out area;

[0040] 41-Anti-slip block; 42-Anti-slip step;

[0041] 5 - Anti-slip area; 51 - Anti-slip groove;

[0042] 52-Anti-slip groove. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] like Figures 1 to 5 As shown, an improved heelless running shoe sole includes a sole body 10. The sole body 10 has a forefoot portion 101 corresponding to the front of the foot, an arch portion 102 corresponding to the arch of the foot, and a heel portion 103 corresponding to the heel. The sole body 10 includes an outsole 1 and a midsole bonded to the outsole 1. The midsole includes a lower midsole 21 and an upper midsole 22 bonded to the lower midsole 21. The bonding method described above can be any conventional method in the art, such as adhesive bonding. A support plate 3 is provided between the lower midsole 21 and the upper midsole 22. The support plate 3 is made of carbon fiber or nylon, which are conventional materials in the art. Preferably, in this invention, the support plate 3 is made of carbon fiber, which has high stability and rigidity. The support plate 3 extends from the forefoot 101 to the heel 103. The support plate 3 has a through hole 31 at the position corresponding to the heel 103. The upper midsole 22 and the lower midsole 21 are fixedly connected at the position of the through hole 31. This arrangement can effectively achieve the effect of shock absorption.

[0045] Preferably, the lower midsole 21 and the outsole 1 form a hollow area 4 at the position corresponding to the heel 103, that is, the outsole 1 does not extend below the heel 103 of the lower midsole 21. This setting makes the bottom of the lower midsole 21 suspended at the position corresponding to the heel 103. This heelless midsole structure can reduce the weight of the shoe and make the user feel a slight forward lean when standing, so as to force the user to land on the forefoot, forming a propulsive effect. At the same time, due to the heelless design, the forefoot or mid-forefoot lands directly, which increases the contact area with the ground compared to the traditional heel landing, enhances the midfoot support, improves the stability support of the midfoot in the forefoot and rearfoot direction, reduces the probability of overpronation during running, and is conducive to runners with forefoot landing style to run more efficiently over long distances, achieving the purpose of saving energy metabolism.

[0046] like Figure 1 As shown, the longitudinal direction of the sole body 10 is taken as the length direction, and the sole body 10 is placed on the reference plane as the reference position (i.e., Figure 1 The position of P), the part of the sole body 10 that contacts the reference plane and is closest to the front end of the forefoot 101 is the upturned part 104, and the distance from the upturned part 104 to the front end of the forefoot 101 of the sole body 10 (i.e., the distance between the upturned part 104 and the front end of the forefoot 101 of the sole body 10) is the distance between the upturned part 104 and the front end of the forefoot 101 of the sole body 10. Figure 1 The length of the middle L) is 28%-35% of the length of the sole body 10. This allows the raised part 104 to be as close as possible to the ball of the foot, facilitating the application of force. The support plate 3 gradually curves upward from the lowest point of the raised part 104 towards the front end of the forefoot 101. The straight-line distance between the horizontal plane where the lowest point of the support plate 3 corresponds to the raised part 104 and the horizontal plane at one end of the support plate 3 in the forefoot 101 is 22mm-25mm (i.e., Figure 1 (Length of M); Preferably, in this embodiment, the distance from the raised portion 104 to the front end of the forefoot portion 101 of the sole body 10 is 32% of the length of the sole body 10, and the straight-line distance between the horizontal plane of the support plate 3 corresponding to the lowest point of the raised portion 104 and the horizontal plane of the support plate 3 located at one end of the forefoot portion 101 is 23mm.

[0047] In this invention, the raised portion 104 of the sole body 10 is moved forward, meaning the fulcrum of force is moved forward. This increases the curvature (height from the ground) of the midsole and support plate 3 corresponding to the forefoot portion 101, and increases the slope from the front end of the forefoot portion 101 to the raised portion 104, making the forefoot rise steeper and the arc larger. This allows the sole to contact the ground quickly, shortening the push-off distance, increasing the push-off rate, reducing the contact time of the sole during running, and improving the rolling feel during running. The support plate 3 is designed with this arc and embedded in the upper midsole 22 and the lower midsole 21 (with the forefoot fulcrum forward and the slope larger). When the user runs forward, the ball of the foot directly serves as the point of force and the point of force application. Compared with the prior art, under the same force, the feedback force provided by the support plate 3 is faster and stronger, making it easier to accelerate the force application.

[0048] The position of the sole body 10 near the heel 103 that contacts the reference plane is the rear contact portion. The straight-line distance from the rear contact portion to the upper surface 105 of the sole body 10 is set as A, where A is 42-46mm. The straight-line distance from the raised portion 104 to the upper surface 105 of the sole body 10 is set as B, where B is 26-30mm. The difference between A and B is greater than 14mm and less than 20mm (this difference represents the point of force application of the foot on the forefoot 101 and the heel 103 when the user is wearing the shoe). The difference in horizontal position (referred to as heel difference) is preferably 16-20mm. Compared with the prior art, this setting can improve the support during landing by increasing the heel difference between the forefoot 101 and the heel 103, and also help reduce the load on the user's calf muscles. The forward landing point and high heel difference can naturally form a starting posture, and enter the starting push-off state earlier upon landing, naturally generating forward thrust, and can reduce the force exerted by the foot muscles, with more force participating in the push-off.

[0049] Preferred, such as Figure 3 and Figure 5 As shown, the bottom of the outsole 1 is provided with an anti-slip area 5 corresponding to the raised part 104. The anti-slip area 5 has several anti-slip grooves 51 and anti-slip strip grooves 52. The anti-slip strip grooves 52 are arranged at intervals along the width direction of the outsole 1. When the user's foot exerts force, the anti-slip area 5 corresponding to the raised part 104 of the outsole 1 serves as the force point. Both the front and rear ends of the anti-slip area 5 will compress the anti-slip area 5 inward. By setting the anti-slip strip grooves 52 and anti-slip grooves 51, the anti-slip area 5 of the outsole 1 can have space to compress inward, thereby improving the anti-slip performance of the outsole 1 and also improving its bending performance.

[0050] The inner side of the sole body 10 corresponding to the inner side of the instep is called the inner side, and the outer side of the sole body 10 corresponding to the outer side of the instep is called the outer side. Preferably, the lower midsole 21 has a first notch 211 at the position corresponding to the arch 102, and a second notch 212 at the position corresponding to the forefoot 101. Correspondingly, the first notch 211 and the second notch 212 both penetrate the lower midsole 21, and the inner side of the bottom of the lower midsole 21 extends towards the position of the first notch 211 with a ventilation groove 213 that connects to the first notch 211. The outsole 1 is hollowed out at the positions corresponding to the first notch 211, the second notch 212 and the ventilation groove 213. This design not only saves materials and reduces the weight of the sole body 10, but also prevents air from being trapped in the first notch 211 and difficult to escape during running, as the ventilation groove 213 is connected to the first notch 211.

[0051] Preferably, the bottom of the lower insole 21 is provided with an anti-slip block 41 at the position corresponding to the hollow area 4, and the anti-slip block 41 has an anti-slip step 42 in the middle. With this setting, when the user accidentally slips and falls backward, the anti-slip step 42 can generate strong friction with the ground, so that the user can remain stable and avoid falling.

[0052] Preferably, the lower midsole 21 gradually tapers from the arch 102 to the heel 103 from both sides towards the center. This design optimizes the structure of the lower midsole 21 and further reduces the weight of the sole body 10.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved sole for a running shoe without heel, comprising a sole body, a forefoot portion corresponding to a position of a forefoot, an arch portion corresponding to a position of an arch, and a heel portion corresponding to a position of a heel, the sole body comprising an outsole and a midsole combined on the outsole, the midsole comprising a lower midsole and an upper midsole combined on the lower midsole, a support plate provided between the lower midsole and the upper midsole, the support plate extending from the forefoot portion to the heel portion, characterized in that, The lower midsole and the outsole correspond to the position of the heel part to form a hollow area, the front-to-rear direction of the sole body is the length direction, the sole body is placed on the reference plane as the reference position, the position of the sole body contacting the reference plane and closest to the front end of the forefoot part is the lifting part, the distance from the lifting part to the front end of the forefoot part of the sole body is 28%-35% of the length of the sole body, the support plate gradually bends upward from the position corresponding to the lowest point of the lifting part to the front end of the forefoot part, and the straight-line distance between the horizontal plane where the lowest point of the lifting part is located and the horizontal plane where the support plate is located at one end of the forefoot part is 22mm-25mm.

2. The improved sole of the no-heel running shoe according to claim 1, wherein, The distance from the lifting part to the front end of the forefoot part of the sole body is 32% of the length of the sole body, and the straight-line distance between the horizontal plane where the lowest point of the lifting part is located and the horizontal plane where the support plate is located at one end of the forefoot part is 23mm.

3. The improved sole of the no-heel running shoe according to claim 1, wherein, The sole body is in contact with the reference plane near the heel part, and the position of the heel part is the rear landing part, the straight-line distance from the rear landing part to the upper surface of the sole body is A, A is 42-46mm, the straight-line distance from the lifting part to the upper surface of the sole body is B, B is 26-30mm, and the difference between A and B is greater than 14mm and less than 20mm.

4. The improved sole of the no-heel running shoe according to claim 1, wherein, The bottom of the outsole is provided with anti-skid grooves and anti-skid strip grooves corresponding to the position of the lifting part, and the anti-skid strip grooves are arranged along the width direction of the outsole.

5. The improved sole of the running shoe without a back-heel according to claim 1, characterized in that, The lower midsole is provided with first grooves corresponding to the position of the arch part, and is provided with second grooves corresponding to the position of the forefoot part, and the first grooves and the second grooves penetrate the lower midsole.

6. The improved sole of the no-heel running shoe according to claim 5, wherein, The bottom of the lower midsole is provided with a ventilation groove extending from the position of the first grooves to the position of the first grooves corresponding to the position of the arch part, and the positions of the first grooves, the second grooves and the ventilation groove of the outsole are hollow.

7. The improved sole of the running shoe without a back-heel according to claim 1, characterized in that, The bottom of the lower midsole is provided with anti-skid blocks corresponding to the position of the hollow area, and the middle part of the anti-skid block has an anti-skid step.

8. The improved sole of the running shoe without a back-heel according to claim 1, characterized in that, The support plate is provided with a through hole penetrating the support plate corresponding to the position of the heel part, and the upper midsole and the lower midsole are integrally connected at the position of the through hole.

9. The improved sole of the running shoe without a back-heel according to claim 1, characterized in that, The lower midsole gradually narrows from both sides to the middle from the position of the arch part to the position of the heel part.

10. The improved sole of a no-heel running shoe according to claim 1, wherein, The support plate is a carbon plate or a nylon plate.

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