A heel dynamic wrap adjustment system and an athletic shoe having the same

Abstract

The utility model relates to a heel dynamic package adjustment system, it includes sole, with the heel of sole rear end is connected and perpendicular to the heel of sole, the knob button mounting seat is contained in the heel, the knob surface button is buckled on the knob button mounting seat, and the knob surface button constitutes the package force adjustment mechanism together with the knob button mounting seat, the two ends are knotted fixed in the package force adjustment mechanism inside, and the two rope rings are extended out two rope rings through the both sides of knob surface button, and the side belt of two ends and rope ring connection forms the structure of package foot. The heel dynamic package adjustment system, through rotating the package force adjustment mechanism on the heel of heel, shortens the both end rope, thereby making the side belt close to the instep, forms the package feeling, to promote the comfort degree and the sports performance of wearing. The utility model also relates to the sports shoes with the heel dynamic package adjustment system.

Description

Technical Field

[0001] This utility model relates to the field of athletic shoes. Specifically, it relates to a dynamic heel support adjustment system. Another aspect of this utility model relates to athletic shoes incorporating this dynamic heel support adjustment system. Background Technology

[0002] As people's living standards improve, consumers are increasingly demanding higher functionality and comfort from shoes. The fit of shoes is a key factor influencing the wearing experience; proper fit provides good support, reduces foot fatigue, and improves athletic performance. Traditional shoes often use laces or Velcro to achieve this fit, but these methods have some drawbacks. For example, adjusting laces requires manual operation, necessitating the wearer to tie knots to secure the laces. This traditional method relies on friction between the laces, which has several insurmountable flaws: The need to manually tighten and loosen the laces each time the shoes are put on and taken off makes the adjustment process time-consuming, especially in a rush, causing significant inconvenience. Furthermore, it's difficult to precisely control the tightness; tying them too tight can compress the instep, causing poor blood circulation and foot pain, while tying them too loose fails to provide sufficient fit, leading to slippage and affecting walking stability and safety. Additionally, after prolonged use, laces may wear out or break, requiring frequent replacement. During outdoor sports, knotted shoelaces can easily become snagged on objects or come undone, leading to falls and tripping hazards.

[0003] As for Velcro, the Velcro system relies on the adhesion between its hook side and loop side to achieve fixation. With repeated use, the hook side will catch dust, hair and other debris. The drawback is that the presence of debris disrupts the normal adhesion structure between the hook side and loop side of the Velcro, causing the adhesion to gradually decrease, the wrapping effect to deteriorate, and it cannot provide stable support and wrapping for the foot, affecting the performance and lifespan of the shoe.

[0004] Besides lacing systems and Velcro, several new self-adjusting wrapping systems have emerged in recent years. Some of these systems employ complex mechanical structures or electronic components. Due to their complexity and numerous parts, they require higher machining precision and more assembly steps during manufacturing, significantly increasing production difficulty and cost. Furthermore, a malfunction in any part can cause the entire system to fail, reducing reliability and increasing maintenance costs, hindering widespread market adoption. Maintenance costs for such systems account for 30% of manufacturing costs, resulting in a market penetration rate of only 15%. These new self-adjusting wrapping systems suffer from complex structures, high costs, and low reliability, failing to meet market demands for efficient, convenient, and comfortable wrapping systems.

[0005] In general, conventional shoe wrapping structures only wrap around the shoe body or a specific area, and cannot adjust the tightness according to the user's body feel. They are also poorly adaptable to unconventional foot shapes. They cannot achieve free adjustment from front to back to achieve a full shoe wrap, and for foot shapes that are difficult to fit, they cannot be compatible with adjacent size ranges at the same time. Users can only choose shoes that are one size larger or smaller. Utility Model Content

[0006] Therefore, this utility model aims to solve the problems of discomfort and inconvenience in adjustment of traditional shoe wrapping systems, and provides a dynamic heel wrapping adjustment system that can accommodate various foot shapes and adjust the wrapping force of the shoe according to the dynamic changes of the foot, thereby achieving flexible wrapping and improving the user's comfort, stability and convenience.

[0007] This invention improves upon the limitations of traditional shoe heel fixation methods by employing a retractable and adjustable mechanism that integrates a wrapping force adjustment mechanism, a buckle, and side straps on both sides of the shoe opening and heel. This allows for flexible wrapping of the heel and shoe opening area, achieving a complete shoe fit. This system can flexibly adjust the degree of wrapping between the heel and shoe opening according to the wearer's foot shape, activity level, and personal preference, thereby improving comfort, fit, and athletic performance while reducing foot fatigue and injury risks caused by improper wrapping. Preliminary tests show that this system can reduce foot fatigue by 40% and the risk of injury by 35%. Actual testing shows a 90% fit rate for unconventional foot shapes such as high instep and high arch, effectively solving problems such as instep pressure, shoes that are too tight, and misalignment.

[0008] This utility model provides a dynamic heel wrap adjustment system, which includes a sole, a heel connected to the end of the heel portion of the sole and extending vertically perpendicular to the sole, and a wrap force adjustment mechanism located on the upper part of the heel and protruding outward. The system has: a buckle with two loops knotted at both ends and fixed inside the wrap force adjustment mechanism and extending from both sides therefrom, and side straps with both ends fixedly connected to the buckle for wrapping the foot. The side straps include a transverse side strap parallel to the sole and forming a ring around the instep, connected to the buckle at both ends, and multiple vertical side straps that are spaced apart around the instep and connected to the sole at both ends of the transverse side strap.

[0009] As a preferred aspect of this utility model, the wrapping force adjustment mechanism further includes a knob mounting seat housed in the heel of the shoe and a knob face buckle that is snapped to the knob mounting seat.

[0010] As a preferred aspect of this utility model, the heel height of the shoe ranges from 98mm to 102mm and the maximum thickness is 1.6mm.

[0011] As a preferred aspect of this utility model, the buckle is a nylon rope or a steel wire rope.

[0012] As a preferred aspect of this utility model, the diameter of the buckle cord is in the range of 1.2mm-1.5mm, and its unidirectional length that can extend on both sides of the knob face buckle is in the range of 20mm-30mm.

[0013] As a preferred aspect of this utility model, the side strap and the buckle are connected together by a sewing process or a high-temperature melting process.

[0014] As a preferred aspect of this utility model, the high-temperature melting process for connecting the side strap and the buckle requires a temperature range of 240°C to 260°C, a pressure range of 2MPa to 20MPa, and a processing time of 30 seconds to 50 seconds.

[0015] As a preferred aspect of the present invention, the side strap is made by flying-knitting yarn into a double-layered coil upper with a hollow cavity, wherein the hollow cavity is filled with a down interlayer or an elastic fiber interlayer.

[0016] As a preferred aspect of this utility model, the wrapping force adjustment mechanism includes a gear and a rack meshing therewith, wherein the gear, which is rotatably fixed to the knob face buckle, drives the rack to move, so as to tighten and loosen the buckle cord.

[0017] As a preferred aspect of this utility model, the side strap and the buckle are connected by a snap fastener.

[0018] This utility model also provides a sports shoe, in which a dynamic heel wrap adjustment system as described above is arranged. Attached Figure Description

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings, wherein:

[0020] Figure 1 A perspective view of the heel dynamic wrap adjustment system according to the present invention is shown;

[0021] Figure 2 A schematic diagram of the wrapping force adjustment mechanism with the buckle attached is shown;

[0022] Figure 3 A schematic diagram is shown of the shoe heel and the knob mounting base housed in the shoe heel;

[0023] Figure 4 An assembly diagram showing the knob facet and buckle attached to the heel of the shoe is provided.

[0024] Figure 5 A schematic diagram showing the connection between the buckle and the side strap is shown;

[0025] Figure 6 The image shows the shape of the side strap when the wrapping force adjustment mechanism is released at its full length;

[0026] Figure 7 A schematic diagram of the dynamic heel wrap adjustment system when the buckle is fully extended is shown;

[0027] Figure 8 The state of the dynamic wrap adjustment system at the heel is shown after the buckle is tightened.

[0028] Explanation of reference numerals in the attached figures

[0029] 1-Sole; 2-Heel; 3-Wrap force adjustment mechanism; 31-Button mounting base; 32-Button face buckle; 4-Strap; 5-Side strap; 51-Horizontal side strap; 52-Vertical side strap. Detailed Implementation

[0030] In this article, the term "athletic shoes" can be applied to a wide range of footwear suitable for various everyday or sporting occasions, including but not limited to: walking shoes, running shoes, casual shoes, tennis shoes, soccer shoes, American soccer shoes, basketball shoes, cross-training shoes, spiked shoes, golf shoes, etc.

[0031] The term "longitudinal" refers to the direction in which a component extends a certain length. For example, the longitudinal direction of an athletic shoe extends between the forefoot and heel areas. The terms "forward" or "forward-facing" are used to refer to the general direction from the heel area toward the forefoot area, and the terms "backward" or "rearward-facing" are used to refer to the opposite direction, i.e., from the forefoot area toward the heel area. In some cases, a component can be identified by a longitudinal axis and the forward and backward longitudinal directions along that axis. The longitudinal direction or axis can also be referred to as the fore-rear direction or axis.

[0032] The term "lateral" refers to the direction in which a component extends a certain width. For example, the lateral direction of an athletic shoe extends between the outer and inner sides of the shoe. The lateral direction or axis can also be referred to as the lateral direction or axis, or the mid-outer direction or axis.

[0033] The term "vertical" or "upright" refers to a direction that is approximately perpendicular to both the horizontal and vertical directions. For example, in the case where the sole structure is laid flat on the ground surface, the vertical direction can extend upwards from the ground surface. It will be understood that each of these directional adjectives can be applied to an individual component of the sole structure. The term "upwards" or "facing upwards" refers to a vertical direction pointing towards the top of the component. The term "downwards" or "facing downwards" refers to a vertical direction opposite to the upwards direction, pointing towards the bottom of the component, and can generally point towards the bottom of the sole structure of the athletic shoe.

[0034] Furthermore, for consistency and convenience, directional adjectives may be used throughout this detailed description corresponding to the illustrated embodiments. Those skilled in the art will recognize that terms such as “above,” “below,” “upward,” “downward,” “top,” and “bottom” may be used descriptively with respect to the drawings without implying limitation on the scope of the invention as defined by the claims. The term “horizontal” refers to a plane extending in both the longitudinal and transverse directions and perpendicular to the vertical direction.

[0035] Unless the context explicitly or clearly indicates otherwise, all numerical values ​​of parameters (e.g., quantities or conditions) in this specification and claims should be understood to be modified in all cases by the terms “about” or “approximately”, regardless of whether “about” or “approximately” actually precedes the numerical value. “About” implies that the stated numerical value allows for some slight imprecision (approximately close to the exact value; approximately or moderately close to the value; almost). If the imprecision provided by “about” or “approximately” is not understood in this ordinary sense in the art, then “about” or “approximately” as used herein at least indicates variations that may arise from ordinary methods of measuring and using these parameters.

[0036] Traditional shoelace systems, which rely on laces to tighten the midfoot and wrap the shoe, can easily lead to issues like pressure on the instep and heel slippage. Current athletic shoe wrapping systems use a knob at the heel to adjust the tightness of the shoe. This knob is connected to an internal lacing reel, and a high-strength lacing cable made of steel wire replaces traditional laces. One end of the cable is fixed to a spool inside the miniature reel, and the other end passes through an extended lacing guide on the shoe upper. When the knob is turned, the lacing cable winds around the spool, pulling the shoe upper tighter to wrap the foot. Pulling the knob upwards loosens the lacing cable, making the shoe looser. The connection area between the shoe body and the heel needs to be 60%-80%. Because the force of the lacing is mainly concentrated in the midfoot and heel areas, it doesn't reach the collar area, making it unsuitable for users with high insteps or high arches.

[0037] This utility model relates to a dynamic heel wrap adjustment system, which aims to achieve a wrapping effect between the foot and the shoe upper, and between the foot and the sole, as well as easy on and off performance. By integrating the dynamic heel wrap adjustment system into the overall structure of the shoe, the side straps on both sides of the shoe upper in the heel wrap force adjustment mechanism are connected by buckles, which can be flexibly stretched and adjusted. During walking or exercise, the system can dynamically adjust the tightness of the side straps according to the foot's movement and force, and can accommodate feet of about 1 to 2 sizes. The shoe forms a suitable and flexible wrap for the foot, improving foot flexibility and wrapping while further enhancing the foot's protection mechanism.

[0038] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0039] Figure 1 The diagram shows a perspective view of the heel dynamic wrap adjustment system according to the present invention. The heel dynamic wrap adjustment system includes a sole 1, a heel 2 connected to the heel end of the sole 1 and extending perpendicularly to the sole 1, a knob mounting base 31 housed within the heel 2, a knob face buckle 32 snapped onto the knob mounting base 31, a buckle 4 with both ends knotted and fixed inside the wrap force adjustment mechanism 3, and two loops extending from both sides of the knob face buckle 32, and side straps 5 connected at both ends to the buckle 4 to form a structure wrapping the foot. The side straps 5 include a transverse side strap 51 parallel to the sole 1 and forming a ring around the instep, connected at both ends to the buckle 4, and multiple vertical side straps 52 spaced apart around the instep, each connected at both ends to the transverse side strap 51 and the sole 1. The knob mounting base 31, knob face buckle 32, buckle 4, and side straps 5 together constitute the wrap force adjustment mechanism 3. The aforementioned dynamic heel wrap adjustment system allows users to shorten the straps 4 at both ends of athletic shoes equipped with this system by rotating the wrap force adjustment mechanism 3 located on the heel. This causes the side straps 51 and / or 52 to fit closer to the instep, creating a wrapping feel and improving comfort and athletic performance. The fit of the athletic shoe to the foot can be adjusted at any time via the wrap force adjustment mechanism 3. When the user wants to remove the athletic shoes with the dynamic heel wrap adjustment system, they can lift the knob buckle 32 to release the straps 4 on both sides, thereby releasing the wrapping of the side straps 5 on the instep, making the athletic shoes easy to remove.

[0040] like Figure 2 The diagram illustrates a wrapping force adjustment mechanism 3 incorporating a buckle 4. The wrapping force adjustment mechanism 3 is installed slightly above the heel of the shoe and adjusts the tightness by adjusting the internal mechanical structure of the knob face buckle 32. The wrapping force adjustment mechanism 3 includes a knob buckle mounting base 31 housed within the heel 2, a knob face buckle 32 connected to the knob buckle mounting base 31, a buckle 4, and side straps 5. The knob face buckle 32 is generally disc-shaped, preferably designed with one side having a smooth surface and the other side having a groove for accommodating the buckle 4. The knob face buckle 32 is adapted to connect with the knob buckle mounting base 31 of the heel 2 and rotates relative to the knob buckle mounting base 31 along its central axis, simultaneously causing the buckle 4 to wrap around the inside of the knob buckle mounting base 31, thereby shortening the buckle on both sides of the knob face buckle 32.

[0041] When in use, if the user feels a large gap between their foot and the shoe, making exercise more strenuous, the user can adjust the support adjustment mechanism 3 to automatically tighten the side straps, increasing the support. If the side straps feel too tight and the foot feels constricted, the user can lift the knob buckle 32 to stretch the strap 4, which will appropriately loosen the side straps 5 to maintain a comfortable fit. This automatic support adjustment system, due to the gaps between the vertical side straps 52, can precisely adjust the heel and shoe opening support according to the wearer's foot shape, exercise state, and personal preferences when it conforms to the surface along with the horizontal side straps 51.

[0042] The buckle 4, knotted and fixed at both ends in the button mounting base 31, is preferably a nylon rope, but can also be a steel wire rope, with a diameter ranging from 1.2mm to 1.5mm. Tests have shown that the nylon rope has a breaking strength of up to 200N, and the steel wire rope has a breaking strength of up to 500N, ensuring that it will not loosen or deform during adjustment. The buckle 4 is inserted into the button face buckle 32 at both ends and knotted and hidden within the button mounting base 31. The unidirectional length of the buckle 4 extending on both sides of the button face buckle 32 ranges from 20mm to 30mm to meet the adjustment needs of different foot shapes. Nylon material has high strength and wear resistance; its tensile strength has been tested to reach 50MPa, capable of withstanding the tension during long-term use. In the above-mentioned wrapping force adjustment mechanism, lifting the button face buckle 32 stretches the buckle at both ends, while rotating it tightens the buckle, requiring only a 5-10mm distance between the two ends of the side strap 5.

[0043] like Figure 3 The diagram shows a schematic of the shoe heel 2 and the knob mounting base 31 housed within it. The shoe heel 2 is a curved plate-like shape, wider at the top and bottom and narrower in the middle. The shoe heel 2 is symmetrical about its vertical central axis, concave towards the forefoot of the shoe, and conforms to the shape of the heel portion of the foot. The knob mounting base 31 is also symmetrical about the vertical axis of symmetry of the shoe heel 2, positioned on the upper part of the heel 2, close to the user's ankle, to ensure a more comfortable angle for tightening the side strap 5 without creating a biased force that affects the wearing experience. Figure 4 The diagram shows the assembly of the knob face buckle 32 and the buckle strap 4 onto the heel 2 of the shoe. The heel 2 has a height of approximately 98mm to 102mm, conforming to the heel of the foot to ensure flexibility of movement during wear. Its maximum thickness is 1.6mm, which provides a certain degree of rigid support during exercise while also having a certain degree of elasticity, ensuring a good wearing experience for the user.

[0044] Figure 5A schematic diagram showing the connection between the buckle 4 and the side strap 5 is illustrated. The lateral side strap 51 is connected to the buckle 4 in the support force adjustment mechanism 3 located on the heel 2, forming a retractable adjustment mechanism. The side strap 5 is made of soft, breathable material, conforming to the contours of the foot and providing a comfortable fit. Through the connection between the buckle 4 and the side strap 5, the support force adjustment mechanism 3 can effectively transmit adjustment force, allowing the user to flexibly adjust the length of the side strap when putting on and taking off the shoes, achieving flexible support for the heel area.

[0045] The side strap 5 and the buckle 4 can be connected by sewing. First, wrap the outermost part of the side strap 5 around the buckle 4 and then fold it in half. The contact length between the buckle 4 and the transverse side strap 51 is about 5mm-10mm. Then, sew the folded end to the transverse side strap 51. After folding and sewing, one end of the transverse side strap 51 forms a through hole for the buckle to pass through, with a diameter of about 2-3mm.

[0046] Furthermore, the side strap 5 and the buckle 4 can also be connected using a high-temperature melting method. This involves using high temperature to melt the nylon or auxiliary adhesive material, bonding it to one end of the transverse side strap 51, and then cooling it to achieve the connection between the buckle 4 and the transverse side strap 51. The high-temperature melting process parameters are: temperature 240℃-260℃, pressure 2-20MPa, and time 30-50 seconds. After this process, the tensile strength of the joint can reach 150N, ensuring a strong connection. Besides conventional steel wire rope and nylon rope, other synthetic fiber shoe ropes can also be used, such as polyethylene fiber rope, polyester rope, and polypropylene rope. The thickness can be selected according to the shoe style and the needs of the occasion. For example, thicker ropes have relatively higher strength and abrasion resistance, can withstand greater tension and friction, and are less prone to breakage or damage during frequent use of the buckle to adjust the tightness, potentially resulting in a longer service life. For instance, buckles used in outdoor styles and scenarios can be paired with thick polyethylene fiber ropes.

[0047] According to the heel dynamic wrap adjustment system of this utility model, the connection area between the buckle 4 and the side strap 5 accounts for only 2% of the total shoe area, yet it can achieve the tightness and wrapping of the entire shoe. The wrapping area adjusted by the heel dynamic wrap adjustment system accounts for 80% of the entire shoe. The wrapping from the shoe opening to the heel area can dynamically adjust the tightness of the side strap according to the foot's movements and force conditions, further enhancing the foot's protection mechanism.

[0048] Figure 6The diagram shows the side strap 5 in its position when the buckle 4 is fully extended from the wrap adjustment mechanism 3. When the buckle 4 is fully extended, the ring formed by the side strap 5, the buckle 4, and the knob buckle 32 has its maximum circumference. If the user is wearing the shoe, the gap between the side strap 5 and the user's foot is at its maximum, which is beneficial for the user to take off the shoe. If the user is not wearing the shoe, the maximum circumference of the shoe opening also facilitates the user's foot to push into the shoe in preparation for subsequent wrap adjustment steps. Figure 7 A schematic diagram of the dynamic heel wrap adjustment system is shown when the buckle 4 is fully extended. Corresponding to the lateral side strap 51, the vertical side strap 52 is also in a relaxed state, providing almost no restraint on the user's foot, which facilitates the user in putting on and taking off the athletic shoes.

[0049] Subsequently, rotating the knob face buckle 32 gradually shortens the buckle straps 4 on both sides, and the side straps 5 connected to the buckle straps 4 in the dynamic wrap adjustment system of the heel gradually conform to the user's foot as the buckle straps 4 shorten. Figure 8 The image shows the state of the heel dynamic wrap adjustment system after the buckle 4 is tightened. At this time, the side straps 5 will adapt to the shape of the user's foot, improving the wearing experience, reducing foot slippage within the shoe, and enhancing athletic performance. Because the materials constituting the buckle 4 and side straps 5 have a certain degree of elasticity, after prolonged wear, the gap between the heel dynamic wrap adjustment system and the foot may increase, resulting in a less snug fit. Users can adjust the knob faceplate at any time to maintain the desired wrap position.

[0050] In some embodiments, alternatively, the wrapping force adjustment mechanism 3, in addition to the internal adjustment buckle structure described above, can also employ a rack and pinion structure. The buckle is tightened and loosened by rotating the knob, which moves the rack. This structure offers advantages such as high adjustment precision and good stability, making it suitable for professional sports shoes requiring high control over the wrapping force. However, it is relatively more expensive.

[0051] In some embodiments, alternatively, besides sewing and high-temperature melting, the side strap 5 and the buckle 4 can be connected using a snap-on connection. Matching snaps are provided on the side strap 5 and the buckle 4, and the length of the side strap is adjusted by connecting and disconnecting the snaps. This method is convenient for installation and disassembly, allowing users to change the side straps according to different needs, enhancing the personalization and practicality of the shoes. However, the process is more complex, increasing the cost.

[0052] This utility model also provides a sports shoe with the aforementioned dynamic heel wrap adjustment system. The dynamic heel wrap adjustment system is tightly integrated with the overall structure of the sports shoe, forming an organic whole. Specifically, the side strap 5 is formed into the upper using an integrated flyknit process. It is woven synchronously with the main body of the shoe using a dedicated multi-needle bed knitting machine, with the yarn optionally composed of parallel fibers of spandex and polyester. This process eliminates the traditional cutting and splicing steps between the side strap 5 and the shoe body, making the side strap an inseparable part of the shoe body. As the yarn extends from the toe to the side, it transitions naturally through a pre-programmed stitch trajectory, and the loop density is dynamically adjusted according to the stress requirements, ensuring the structural strength of the connection between the side strap 5 and the shoe body while avoiding discomfort caused by seam friction. Furthermore, to achieve the core requirement of "comfortable feel," the side strap 5 adopts a hollow three-dimensional structure design. During the knitting process, the equipment controls the hooking rhythm of the upper and lower needle beds to create a double-layered loop in the side band area: the outer loops are tightly packed to maintain shape stability, while the inner loops are loosely arranged in a grid pattern to leave space, naturally forming a closed hollow cavity between the two layers. This structure acts like a "buffer container" for the side band, reducing the overall weight and providing storage space for subsequent filling materials.

[0053] The filling process is key to achieving a balance between softness and elasticity in the side strap 5. This process uses high-pressure airflow to evenly distribute down or elastic fibers (such as modified polyester) within the hollow cavity, creating a synergistic effect with the double-layer coil structure. The advantage of this synergistic effect between the filling material and the double-layer coil is that when the side strap is compressed, the filling material deforms with the cavity, generating rebound tension. Combined with the elasticity of the yarn itself (typically mixed with 5%-8% spandex), this allows the side strap 5 to adapt to subtle changes in foot shape during movement, achieving a "dynamic fit." In a static state, the fluffy filling material maintains a soft touch, avoiding the oppressive feeling of traditional rigid side straps.

[0054] According to the heel dynamic wrap adjustment system of the present invention, when the adjustment strap 4 is extended or shortened, the upper can correspondingly follow the side strap 5 away from or conform to the instep. During the design process, the aforementioned flyknit upper and filling processes fully consider the shoe's appearance, comfort, and functionality, ensuring that the heel dynamic wrap adjustment system does not negatively impact the shoe's appearance or wearing experience. Through a reasonable layout and structural design, the adjustment system, while fulfilling its function, can work in coordination with other parts of the athletic shoe to provide optimal wearing performance.

[0055] The dimensions and values ​​disclosed herein should not be construed as strictly limited to the precise numerical values ​​stated. Rather, unless otherwise specified, each such dimension is intended to represent the value and a functionally equivalent range around that value. For example, a dimension disclosed as “40 mm” is intended to represent “approximately 40 mm”.

[0056] All documents referenced in the “Detailed Description” section are incorporated herein by reference in the relevant sections; no reference to any document should be construed as an admission that it is prior art concerning this utility model. In the event of any conflict between the meaning or definition of any term in this written document and the meaning or definition of any term in the referenced documents, the meaning or definition assigned to the term in this written document shall prevail.

[0057] While specific embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that many other changes and modifications can be made without departing from the spirit and scope of the present invention. Therefore, the appended claims are intended to cover all such changes and modifications within the scope of the present invention.

Claims

1. A heel dynamic wrap adjustment system, characterized in that, The heel dynamic wrapping adjustment system comprises: a sole; a heel connected to the end of the heel of the sole and vertically extending perpendicular to the sole; a wrapping force adjustment mechanism located at the upper part of the heel and outwardly protruding, which has: two lacing cords fixed at both ends inside the wrapping force adjustment mechanism and extending out from both sides thereof; and two side straps connected at both ends to the lacing cords for wrapping the foot; wherein the side straps comprise transverse side straps connected at both ends to the lacing cords and surrounding the instep to form a loop, and a plurality of vertical side straps connected at both ends to the transverse side straps and the sole and distributed around the instep at intervals.

2. The heel dynamic wrap adjustment system of claim 1, wherein, The wrapping force adjustment mechanism further comprises a knob face buckle mounting seat accommodated in the heel, and a knob face buckle connected to the knob face buckle mounting seat.

3. The heel dynamic wrap adjustment system of claim 1, wherein, The height of the heel ranges from 98mm to 102mm and the maximum thickness is 1.6mm.

4. The heel dynamic wrap adjustment system of claim 1, wherein, The lacing cords are nylon cords or steel cords.

5. The heel dynamic wrap adjustment system of claim 1, wherein, The diameter of the lacing cords ranges from 1.2mm to 1.5mm, and the one-way length of the lacing cords extendable on both sides of the knob face buckle ranges from 20mm to 30mm.

6. The heel dynamic wrap adjustment system of claim 1, wherein, The side straps are knitted by yarn to form a double-layer loop with a hollow cavity, and the hollow cavity is filled with a down sandwich or an elastic fiber sandwich.

7. The heel dynamic wrap adjustment system of claim 2, wherein, The wrapping force adjustment mechanism comprises a gear and a rack engaged with the gear, wherein rotating the gear fixedly connected to the knob face buckle drives the rack to move, so as to tighten and loosen the lacing cords.

8. The heel dynamic wrap adjustment system of claim 1, wherein, The side straps are snap-connected to the lacing cords.

9. An athletic shoe, characterized by The sports shoes are provided with the heel dynamic wrapping adjustment system as claimed in any one of claims 1 to 7. The sports shoes are provided with the heel dynamic wrapping adjustment system as claimed in any one of claims 1 to 7.

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