A sole and shoe

Abstract

The application discloses a shoe sole and a shoe, and relates to the field of shoes. In order to prevent the over-pronation of the feet of a user, an anti-pronation structure is arranged in a shoe of the prior art, and the anti-pronation structure limits the over-pronation of the feet when the feet are over-pronated. However, the anti-pronation structure is made of a rigid material, and long-term use of the shoe by children will affect the development of the feet. The shoe sole is characterized in that the shoe sole comprises an arch part, the inner bottom surface of the arch part is in contact with the ground, and the outer bottom surface of the arch part is higher than the inner bottom surface of the arch part, so that the outer side of the arch part is spaced apart from the ground.

Description

Technical Field

[0001] This application relates to the field of footwear, specifically to a sole and a shoe. Background Technology

[0002] With societal development, more and more people recognize the importance of sports for children's growth, and more and more children are participating in sports. Sprinting is an important sport, and several items in the National Student Physical Fitness and Health Standards are related to sprinting. Sprinting is a sport with high explosive power, and the feet experience significant action and reaction forces during the sprint. Children's foot bones and muscles are still in the growth and development stage, often unable to effectively control their feet, leading to excessive arch collapse and excessive calcaneal eversion, resulting in excessive pronation of the foot. Current technology typically uses rigid supports to restrict the arch in order to prevent pronation, but these rigid supports can excessively restrict children's growth and development. Utility Model Content

[0003] The purpose of this application is to overcome the aforementioned defects or problems in the prior art and to provide a shoe that prevents excessive pronation of the foot.

[0004] To achieve the above objectives, the following technical solution is adopted:

[0005] A shoe sole includes an arch portion, wherein the inner bottom surface of the arch portion is in contact with the ground, and the outer bottom surface of the arch portion is higher than the inner bottom surface of the arch portion, thereby creating a gap between the outer side of the arch portion and the ground.

[0006] Furthermore, the forefoot portion of the sole is provided with several protrusions for gripping the ground, and gaps are formed between the protrusions.

[0007] Furthermore, the protrusion includes a plurality of first protrusions and second protrusions. The first protrusions are in the shape of a herringbone and have a forward opening. The second protrusions are in the shape of a herringbone and have a rearward opening. At least some of the first protrusions and some of the second protrusions are arranged alternately along the inner and outer directions, and the size of the second protrusion along the front and back directions is larger than the size of the adjacent first protrusion along the front and back directions.

[0008] Furthermore, the sole includes a midsole, which is made of supercritical foam material.

[0009] Furthermore, the forefoot of the sole has a thickness of 17.5mm, the heel has a thickness of 23.5mm, and the difference between the forefoot and heel is 6mm.

[0010] A shoe includes an upper, an insole, and a sole as described in any one of the preceding descriptions.

[0011] Furthermore, the insole is made of supercritical foam material, and the forefoot area of ​​the insole has several through holes.

[0012] Compared with existing technologies, the above solution has the following beneficial effects:

[0013] The first technical solution involves a sole that includes an arch support. The inner side of the arch contacts the ground, while the outer side of the arch is higher than the inner side, creating an indentation between the outer arch and the ground. During sprinting, the action and reaction forces between the foot and the ground are significant. When the foot lands, the arch slightly lowers, and the foot undergoes a slight, physiological eversion to cushion the action and reaction forces. Then, the foot begins to rotate inward from this slightly everted state, becoming a relatively rigid structure in preparation for push-off. At this point, the arch, as the core structure, bears most of the body weight. Then, the foot primarily exerts force at the first metatarsophalangeal joint and the first phalanx, applying a backward and downward force to the ground, which generates a forward reaction force propelling the body forward. Because children are in a stage of growth and development, and their bones and muscles are not yet fully developed, the forces on their feet during sprinting are substantial. When the foot is under great pressure, the bones and muscles do not provide sufficient support for the arch, causing the arch to lower excessively and resulting in excessive eversion of the calcaneus and thus excessive eversion of the foot.

[0014] In this technical solution, the inner side of the arch section of the sole contacts the ground, while the outer side of the arch section forms a gap with the ground. The inner side of the arch provides greater support, while the outer side provides less. When the foot lands and contacts the ground, the outer side of the arch moves downwards and outwards along this gap. The downward movement of the arch along this gap generates an inversion force, thus reducing some of the eversion. This movement space also acts as a buffer and reaction force. As the arch continues to descend and the foot begins to invert, the inner side of the arch is supported by the inner side of the arch section of the shoe sole, preventing excessive arch descent. Without excessive arch descent, excessive eversion of the calcaneus is avoided. Simultaneously, the inner side of the arch generates an inversion torque, further resisting some of the eversion.

[0015] Existing technologies for preventing pronation typically involve adding rigid supports to the medial side of the arch. These rigid supports have a fixed shape, exerting significant reaction forces on the arch and excessively restricting its movement, thus impacting children's foot growth and development. This new technology utilizes a softer sole than rigid supports to provide medial arch support, reducing reaction forces on the arch. Furthermore, the medial arch support of the sole only activates adaptively during high-intensity exercise when the arch is about to excessively lower, avoiding excessive restriction during daily walking and better protecting children's growth and development.

[0016] The second technical solution involves several traction bumps on the forefoot of the sole. These bumps reduce the surface area of ​​the sole in contact with the ground, increasing the pressure between the bumps and the ground. The bumps and the ground can then better interlock, improving grip. Existing sprint shoes typically use spikes in the forefoot to improve stability by embedding them into the ground. The traction bumps in this solution have a larger surface area than spikes, distributing pressure better and improving wearing comfort. When there is standing water on the ground, the gaps between the bumps can also create channels for water to flow, preventing water from remaining between the sole and the ground, reducing friction, and causing imbalances.

[0017] The third technical solution involves the sole pressing down immediately upon contact with the ground during sprinting. The opening of the first protrusion interlocks with the ground, restricting forward movement and improving traction. After the sole contacts the ground, the foot pushes backward, and the opening of the second protrusion interlocks with the ground to provide stable support. The reaction force from the ground further propels the foot forward. The first and second protrusions are staggered along the inner and outer sides, ensuring that the same area of ​​the forefoot in contact with the ground utilizes both protrusions to enhance traction and propulsion. The second protrusion is larger than the first, allowing for greater propulsion within the limited area of ​​the forefoot.

[0018] The fourth technical solution involves a sole, including a midsole made of supercritical foam. Supercritical foam offers excellent rebound performance, generating a greater inward torque on the medial arch, further preventing excessive pronation. It also features efficient energy return, enhancing running speed.

[0019] The fifth technical solution features a sole thickness of 17.5mm in the forefoot and 23.5mm in the heel, resulting in a 6mm heel-to-toe drop. This design reduces the sole thickness compared to existing children's running shoes, lowering the center of gravity and consequently the wearer's center of gravity. Children are still developing and have limited balance control; a lower center of gravity helps maintain balance during sprinting. A too-low heel-to-toe drop leads to insufficient cushioning and excessive foot pressure, while a too-high drop causes overstretching of the foot muscles. The 6mm drop is more suitable for children, improving running speed without hindering their growth and development.

[0020] The sixth technical solution is a shoe comprising an upper, an insole, and a sole as described in any of the preceding technical solutions. This shoe can prevent excessive pronation of the feet in children during sprinting.

[0021] The seventh technical solution involves using supercritical foam material for the insole, with several perforations in the forefoot area. Supercritical foam insoles offer efficient energy return, improving running speed. The perforations in the forefoot area further reduce the shoe's weight and enhance the insole's moisture wicking and breathability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings used are briefly described below:

[0023] Figure 1 This is a bottom view of the shoe sole;

[0024] Figure 2 This is a schematic diagram of the cross-section A-A1 of the shoe sole.

[0025] Explanation of main reference numerals: 1. Sole; 2. Forefoot; 3. Arch; 4. Heel; 5. Protrusion; 51. First protrusion; 52. Second protrusion; 11. Inner side of arch; 12. Outer side of arch; 20. Detailed Implementation

[0026] Unless otherwise specified, the terms “first,” “second,” or “third,” etc., in the claims and description are used to distinguish different objects and not to describe a particular order.

[0027] Unless otherwise specified, in the claims and description, the terms “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “clockwise,” “counterclockwise,” etc., indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0028] Unless otherwise specified in the claims and description, the terms "fixed connection" or "fixed connection" shall be interpreted broadly to mean 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.

[0029] Unless otherwise specified, the terms “comprising,” “having,” and variations thereof in the claims and description shall mean “including but not limited to.”

[0030] In the claims and description, unless otherwise specified, the term "have" means that a technical feature that follows is part of a technical feature that precedes it.

[0031] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0032] A shoe includes an upper, an insole, and a sole. The insole is made of supercritical foam material and has several perforations in the forefoot area. The supercritical foam insole features efficient energy return, improving running speed. The perforations in the forefoot area further reduce the shoe's weight and enhance the insole's moisture wicking and breathability.

[0033] See Figure 1 , Figure 1 A schematic diagram of the sole 1 is shown, which includes a forefoot portion 2, an arch portion 3, and a heel portion 4.

[0034] See Figure 2 , Figure 2 It shows Figure 1 A schematic cross-sectional view along the A-A1 direction. A-A1 is a schematic cross-sectional view of the arch portion 3. The bottom surface of the inner side 11 of the arch portion is in contact with the ground, and the bottom surface of the outer side 12 of the arch portion is higher than the bottom surface of the inner side 11 of the arch portion, thus creating a gap 20 between the outer side 12 of the arch portion and the ground. In this embodiment, the direction of the sole 1 from the forefoot portion 2 to the heel portion 4 is the front-to-back direction, and the direction of the sole 1 from the thumb to the little finger is the inside-outside direction. The bottom surface of the outer side 12 of the arch portion forms a gap 20 with the ground, and the bottom surfaces of the outer side of the forefoot portion 2 and the outer side of the heel portion 4 are in contact with the ground.

[0035] During sprinting, the action and reaction forces between the foot and the ground are significant. Upon landing, the arch of the foot slightly lowers, and the foot undergoes a slight, physiological eversion to cushion the action and reaction forces. Then, the foot begins to rotate inward from this slightly everted state, becoming a relatively rigid structure in preparation for the push-off. At this point, the arch, as the core structure, bears most of the body weight. Then, the foot primarily exerts force at the first metatarsophalangeal joint and the first phalanx, applying a backward and downward force to the ground, while the ground generates a forward reaction force, propelling the body forward.

[0036] Because children are in the growth and development stage, their bones and muscles are not yet fully developed, resulting in significant stress on their feet during sprinting. When the feet are under heavy stress, the bones and muscles provide insufficient support for the arch, causing excessive arch descent and excessive calcaneal eversion, leading to excessive pronation of the foot. Viewed from the rear, the lower part of the heel is closer to the outer side than the upper part. In this design, the inner side of the arch section of the sole contacts the ground, while the outer side of the arch section forms a gap with the ground. The inner side of the arch provides greater support, while the outer side provides less. When the foot lands, the arch moves downwards and outwards along this gap. The downward movement of the arch along this gap generates an inward force, thus reducing some of the pronation. This movement space also acts as a buffer and reaction force. As the arch continues to descend and the foot begins to pronate, the inner side of the arch is supported by the inner side of the arch section of the shoe sole, preventing excessive arch descent. Without excessive arch descent, excessive calcaneal eversion is avoided. At the same time, an inversion torque is generated on the inner side of the arch, further resisting part of the foot eversion.

[0037] Existing technologies for preventing pronation typically involve adding rigid supports to the inner side of the arch. These rigid supports have a fixed shape, exerting significant reaction forces on the arch and excessively restricting its movement, thus affecting children's foot growth and development. This new technology utilizes a softer sole for arch support, reducing reaction forces on the arch. Furthermore, the inner arch support of the sole only activates adaptively during high-intensity exercise when the arch is about to excessively lower, avoiding excessive restriction on the arch during daily walking and better protecting children's growth and development.

[0038] See Figure 1 The forefoot portion 2 of the sole 1 has several small, protruding bumps 5 for gripping the ground, with gaps between them. These bumps protrude from the forefoot portion 2 and contact the ground. The bumps reduce the surface area of ​​the sole 1 when in contact with the ground, increasing the pressure exerted on the ground. The bumps and the ground can better interlock, improving grip. Existing sprint shoes typically use spikes in the forefoot portion 2 to improve stability. This design uses bumps 5 with a larger surface area than spikes, distributing pressure better and improving comfort. When there is standing water, the gaps between the bumps 5 can also create channels for water flow, preventing water from accumulating between the sole 1 and the ground, reducing friction and preventing imbalances.

[0039] The protrusion 5 includes several first protrusions 51 and second protrusions 52. The first protrusions 51 are herringbone-shaped with a forward opening, and the second protrusions 52 are herringbone-shaped with a rearward opening. At least some of the first protrusions 51 and some of the second protrusions 52 are staggered along the inner and outer directions, and the size of the second protrusion 52 along the front-back direction is larger than the size of the adjacent first protrusion 51 along the front-back direction. During sprinting, when the sole just touches the ground, the sole presses down, and the openings of the first protrusions 51 interlock with the ground, restricting the forward movement of the shoe and improving the grip of the sole. After the sole contacts the ground, the foot exerts force backward, and the interlocking openings of the second protrusions 52 provide a stable support surface. The reaction force of the ground on the foot can better propel the body forward. The staggered arrangement of the first protrusions 51 and second protrusions 52 along the inner and outer directions means that in the same area where the forefoot 2 contacts the ground, the first protrusions 51 and second protrusions 52 work together to improve grip and propulsion. The second protrusion 52 is larger than the first protrusion 51, which can provide more propulsion within the limited area of ​​the forefoot portion 2.

[0040] The sole 1 includes the midsole, which uses supercritical foam material. Supercritical foam has excellent rebound performance and generates a greater inward torque on the medial side of the arch, further preventing excessive outward pronation. Supercritical foam also has efficient energy return, improving running speed. The forefoot section 2 of the sole 1 is 17.5mm thick, and the heel section 4 is 23.5mm thick, resulting in a 6mm heel-to-toe drop. A too low heel-to-toe drop leads to insufficient cushioning and excessive foot pressure, while a too high heel-to-toe drop leads to overstretching of the foot muscles. The 6mm drop is more suitable for children, improving running speed without affecting their growth and development.

[0041] The sole 1 of this application includes an arch support 3. The bottom surface of the inner side 11 of the arch support contacts the ground, while the bottom surface of the outer side 12 of the arch support is higher than that of the inner side 11, thus creating a gap 20 between the outer side 12 of the arch support and the ground. When the foot lands and contacts the ground, the arch moves downward and outward along this gap 20. When the arch moves downward along this gap 20, it generates an inward force, thereby reducing some of the eversion of the foot. As the arch continues to descend and the foot begins to pronate, the inner side of the arch is supported by the inner side 11 of the arch support of the sole, preventing the arch from descending further. At the same time, the inner side 11 of the arch support generates an inward torque, further resisting some of the eversion of the foot. Moreover, the inner side of the arch support of the sole only adaptively activates during high-intensity exercise when the arch is about to descend excessively, without excessively restricting the arch during daily walking, thus better protecting children's growth and development.

[0042] The description of the above specification and embodiments is used to explain the scope of protection of this application, but does not constitute a limitation on the scope of protection of this application.

Claims

1. A shoe sole, characterized in that, The arch (3) is included, with the bottom surface of the inner side (11) of the arch in contact with the ground, and the bottom surface of the outer side (12) of the arch higher than the bottom surface of the inner side (11) of the arch, thereby creating a gap (20) between the outer side (12) of the arch and the ground.

2. The sole as described in claim 1, characterized in that, The forefoot part (2) of the sole is provided with a number of protrusions (5) for gripping the ground, and gaps are formed between the protrusions (5).

3. The sole as described in claim 2, characterized in that, The protrusion (5) includes a plurality of first protrusions (51) and second protrusions (52). The first protrusions (51) are in the shape of a V and have a forward opening. The second protrusions (52) are in the shape of a V and have a rearward opening. At least some of the first protrusions (51) and some of the second protrusions (52) are arranged alternately along the inner and outer directions. The size of the second protrusion (52) along the front and back directions is larger than the size of the adjacent first protrusion (51) along the front and back directions.

4. The sole as described in claim 3, characterized in that, The sole includes a midsole, which is made of supercritical foam material.

5. The sole as described in claim 4, characterized in that, The forefoot (2) of the sole has a thickness of 17.5 mm, the heel (4) has a thickness of 23.5 mm, and the difference between the forefoot and heel is 6 mm.

6. A type of shoe, characterized in that, Includes the upper, insole, and sole as described in any one of claims 1-5.

7. The shoe as described in claim 6, characterized in that, The insole is made of supercritical foam material, and the forefoot area of ​​the insole has several through holes.

Images