A type of shoe that helps maintain the rolling shape of the forefoot

Abstract

This invention provides a shoe that facilitates maintaining the forefoot's rolling shape, comprising an upper, a sole, and several traction cables. The upper is attached to the sole, which includes a midsole and anchors. The anchors are fixed to the midsole and have several anchor points exposed on the sidewalls of the midsole. The first end of each traction cable is fixed to the forefoot flexion area of ​​the midsole via a corresponding anchor point. The second end of each traction cable extends rearward and upward at an angle to securely connect to the rear end of the shoe. When the forefoot flexion area tends to bend or flatten during running, ground contact, transition, or push-off, the traction cables are stretched between the anchor points and the rear end of the shoe. The tension of the traction cables is transmitted to the midsole via the anchor points and anchors, thereby creating a tensile constraint on the forefoot flexion area. This shoe can improve the problem of sole rolling shape deformation during ground contact without significantly increasing sole weight or assembly complexity.

Description

Technical Field

[0001] This invention relates to the field of shoe sole technology, and specifically to a shoe sole and shoe that facilitates maintaining the rolling shape of the forefoot. Background Technology

[0002] Running shoes require the forefoot area to flex with the metatarsophalangeal joint during running, while the sole also needs a certain degree of forefoot flexural stiffness to prevent the forefoot area from being directly flattened by the force of the sole upon impact with the ground, thus limiting the rolling deformation of the sole and affecting athletic performance. Current high-performance running shoes typically improve forefoot flexural stiffness by incorporating rigid components such as carbon fiber plates, nylon plates, or TPU plates within the midsole. However, these rigid components usually need to be sandwiched inside the midsole and rely on a large coverage area to achieve a significant flexural restraint effect. Larger rigid components increase the weight of the sole and increase assembly complexity, while reducing the area of ​​the rigid components can weaken the restraint effect on the forefoot flexural area. Summary of the Invention

[0003] The purpose of this invention is to solve the problems pointed out in the background art and to disclose a shoe that helps maintain the rolling shape of the forefoot. This shoe can improve the problem of deformation of the rolling shape of the sole when it touches the ground without significantly increasing the weight of the sole or increasing the assembly complexity.

[0004] To achieve the above objectives, the following technical solution is adopted: In at least one embodiment, a shoe is disclosed that facilitates maintaining a forefoot rolling shape. The shoe includes an upper, a sole, and a plurality of traction cables. The upper is attached to the sole. The sole includes a midsole and an anchor. The anchor is fixed to the midsole and has a plurality of anchor points exposed on the sidewall of the midsole. The first end of each traction cable is fixed to the forefoot flexion area of ​​the midsole through a corresponding anchor point, and the second end of each traction cable extends rearward and upward at an angle to be tensioned and fixedly connected to the rear end of the shoe.

[0005] The forefoot area of ​​the shoe sole needs to flex with the metatarsophalangeal joints during running contact, transition, and push-off, while simultaneously preventing excessive flattening of the forefoot area under pressure, which would disrupt the shoe's rolling profile. This design uses a traction cable with one end fixed to the forefoot flexion area of ​​the midsole, and the second end extending rearward and upward at an angle, tensioned and fixed to the rear of the shoe. This allows the traction cable to create a tension path between the forefoot flexion area and the rear of the shoe. When the forefoot area tends to flex and flatten, the traction cable generates a pulling force between the forefoot flexion area and the rear of the shoe, converting further deformation of the forefoot flexion area into traction cable tension, thus restricting the forefoot flexion and helping to maintain the rolling profile of the sole from forefoot to rear. However, since the midsole is usually made of flexible materials such as foam, if the traction cable is directly fixed to the midsole, the concentrated tension generated during repeated tensioning can easily cause localized deformation, loosening, or pull-out at the fixing point, making it difficult for the traction cable to stably participate in forefoot flexion restriction in the long term. This design fixes the anchor to the midsole and connects it to the first end of the traction cable via anchor points exposed on the midsole sidewall. This allows the tension at the first end of the traction cable to be transferred from the anchor points to the anchor integrated with the midsole, and then from the anchor to the midsole, thus forming a more stable connection structure. Therefore, while limiting forefoot bending deformation through the traction cable tension path, the anchor and anchor points provide a stable foundation for the first end of the traction cable, ensuring that the tension constraint of the traction cable reliably acts on the forefoot bending area. This also helps reduce reliance on large-area plate-like rigid components, improving the issues of increased sole weight and complex internal assembly.

[0006] In a shoe disclosed in at least one embodiment, preferably, the anchor point is provided on both the inner and outer sidewalls of the midsole, and the traction cable is provided on both the inner and outer foot sides of the shoe.

[0007] In the above design, both the inner and outer sides of the foot are tensioned and constrained by traction cables, restricting the forefoot flexion area on both sides in the width direction of the sole. The traction cables on both sides are fixed to the anchors through corresponding anchor points, which can share the tension of the traction cables, improve the fixation stability of the two sides of the midsole, and reduce the left-right force deviation when the forefoot flexes.

[0008] In a shoe disclosed in at least one embodiment, preferably, on the same sidewall of the midsole, each of the anchor points is arranged along the length of the shoe in the forefoot flexion area of ​​the midsole.

[0009] In the above design, multiple anchor points are arranged along the length of the forefoot bending area. The tension constraint of the traction cable can cover a longer forefoot bending range and distribute the tension to multiple anchor points, reducing the force concentration at a single fixed position.

[0010] In a shoe disclosed in at least one embodiment, preferably, the anchoring member extends through and is embedded in the midsole in the width direction of the shoe, so that its anchor point is exposed on both side walls of the midsole.

[0011] In the above design, the anchoring element that runs through and is embedded in the midsole can form a lateral fixed base in the width direction of the sole. After the tension of the traction cable is applied to the sidewall anchor point, it can be transmitted to the interior of the midsole through the anchoring element. The anchoring element is essentially firmly locked by the midsole, thereby improving the anti-pull-out ability of the anchor point and the fixed reliability of the first end of the traction cable.

[0012] In a shoe disclosed in at least one embodiment, preferably, there are multiple anchors, each anchor is arranged at intervals along the length direction of the shoe, and each anchor forms anchor points exposed on both sides of the midsole at both ends in the width direction of the shoe.

[0013] In the above design, multiple anchoring elements are spaced apart along the length of the shoe, allowing multiple front-to-back anchoring positions to be formed in the forefoot flexion area. Each anchoring element has two anchor points at both ends, facilitating the corresponding fixation of the inner and outer traction cables and distributing the tension of the traction cables among multiple anchoring elements, thereby improving the stability of the forefoot flexion restriction.

[0014] In a shoe disclosed in at least one embodiment, preferably, the anchor is embedded in the midsole and is at least partially circumferentially disposed therein along the periphery of the midsole; the anchor point is located at the outer periphery of the anchor and protrudes from the sidewall of the midsole.

[0015] In the above design, the anchoring elements, which are at least partially circumferentially arranged along the midsole, can form multiple anchoring bases on the circumference, and the outer circumferential anchor points can provide multiple connection points for the traction cable. These anchoring elements can form continuous or partially continuous load-bearing bases on the midsole circumference, dispersing the tension generated by the traction cable along the circumference of the anchoring elements, thereby improving the load-bearing capacity of the anchor points and reducing the risk of excessive stress concentration at local anchor points.

[0016] In a shoe disclosed in at least one embodiment, preferably, the shoe further includes a plurality of tensioning cables disposed inside the midsole, with both ends of the tensioning cables being fixed to the anchor at positions corresponding to the inner and outer sides of the midsole, respectively, across the width direction of the shoe.

[0017] In the above design, the tension cable spans the width of the sole, connecting the inner and outer anchor points, thus forming an internal lateral connection structure between the two anchoring components. As a result, the tension force of the traction cable can be transmitted to the tension cable via the anchor points and anchoring components for distribution. When the traction cable is tensioned, it provides a lateral force-bearing base inside the midsole, thereby improving the fixing reliability of the inner and outer anchor points and reducing the risk of the traction cable loosening.

[0018] In the shoe disclosed in at least one embodiment, preferably, the anchor point corresponds to the position of at least a portion of the tension cable, and the traction cable connected to the anchor point is connected to or is an integral component of the tension cable at the corresponding position.

[0019] In the above design, the anchor point corresponds to the tension cable position, allowing the tension force exerted by the traction cable on the anchor point to be directly transmitted to the corresponding tension cable. When the traction cable and tension cable are connected or are an integral component, the external tension path and the internal transverse tension path of the midsole form a continuous force-bearing structure, thereby enhancing the overall pull-out resistance of the traction cable.

[0020] In the shoe disclosed in at least one embodiment, preferably, the anchor points of the traction cables located at least partially on the inner and outer sides of the shoe correspond to each other along the width direction of the shoe and are connected to the same tension cable, or are integral components with the same tension cable.

[0021] In the above design, the traction cables at corresponding positions on the inner and outer sides of the foot are connected by the same tension cable, so that the tension of the traction cables on both sides can be transmitted to each other in the width direction of the sole. This is equivalent to the traction cables on both sides being connected as a whole, which can further enhance the overall pull-out resistance of the traction cables.

[0022] In the shoe disclosed in at least one embodiment, preferably, the elastic modulus of the material of the anchor is greater than the elastic modulus of the material of the midsole adjacent to the anchor.

[0023] In the above design, the anchoring element has a high modulus of elasticity, enabling the anchor point to maintain a relatively stable position and shape when subjected to the tension of the traction cable. As a result, the tension path of the traction cable is less prone to loosening due to anchor point deformation, and the fixing reliability of the first end of the traction cable and the effect of limiting the bending of the forefoot are both improved.

[0024] In the shoe disclosed in at least one embodiment, preferably, the second end of each of the traction cables is centrally connected to the rear end of the shoe.

[0025] In the above design, the second end of each traction cable is connected to the rear end of the shoe, so that multiple traction cables can act on a preset fixed position at the rear end of the shoe. When worn, the force at a single position is relatively stable, which facilitates the arrangement and tensioning of the traction cables and reduces the assembly complexity of the rear connection structure.

[0026] In the shoe disclosed in at least one embodiment, preferably, the second end of the traction cable is positioned higher up the further back the first end is.

[0027] In the above design, the traction cable with the first end positioned further back has its second end positioned higher up, allowing different traction cables to converge in the middle before diverging, and the second ends at the rear of the shoe to be arranged in a fan-shaped distribution. This structure increases the overall length of the traction cable with the first end positioned forward and increases the tilt angle of the traction cable with the first end positioned backward. The combination of these two factors improves the traction stability of the traction cable on the midsole, better maintaining the rolling shape of the sole when the shoe length is fixed.

[0028] In the shoe disclosed in at least one embodiment, preferably, along the length of the shoe from front to back, each of the traction cables converges and then disperses at a position corresponding to the opening below the shoe upper.

[0029] In the above design, the traction cables converge below the shoe opening and then disperse, which can avoid the low shoe height in the shoe opening area. At the same time, it keeps the length and tilt angle of each traction cable within an appropriate range. The traction cable tilt angle will not be insufficient due to the convergence area being too far forward, nor will the traction cable length be insufficient due to the convergence area being too far back.

[0030] In a shoe disclosed in at least one embodiment, preferably, the shoe further includes a plurality of upper straps that span the upper along the width direction of the shoe and whose two ends are respectively fixed to the anchor points on the inner and outer sidewalls of the midsole.

[0031] In the above design, the upper cable spans the upper and connects to the anchor points on both sides of the midsole. The upper cable can enhance the coverage of the upper when it is supported by the foot.

[0032] In the shoe disclosed in at least one embodiment, preferably, the anchor point is at least one of a thread hole, a thread groove, a lug, a post, or a hook, and the first end of the traction cable passes through, wraps around, or is attached to the corresponding anchor point.

[0033] In the shoe disclosed in at least one embodiment, preferably, the first end of the traction cable passes through the corresponding anchor point and then folds back, and is fixed by at least one of binding, weaving back, clamping, pressing or gluing.

[0034] In the above design, when the anchor point adopts a wire hole, wire groove, lug, protruding post or hook, it can provide a connection foundation for threading, wrapping or hanging according to the path of the traction cable; after the first end of the traction cable passes through the anchor point, it is folded back and fixed, which can improve the anti-pull-out ability of the end of the traction cable and make the tension of the traction cable more stably transmitted to the anchor.

[0035] It should be noted that the forefoot flexion area referred to in this invention can be understood as the area in the forefoot region of the sole corresponding to the flexion tendency of the metatarsophalangeal joint of the foot, and which needs to be restricted from further excessive deformation during running contact, transition, or push-off. The anchor point exposed on the midsole sidewall, as referred to in this invention, can be understood as the anchor point being able to be connected to the traction cable from at least one side of the midsole sidewall, and the anchor itself can be partially or completely embedded, fixed, or combined with the midsole. The tensioned fixed connection, as referred to in this invention, can be understood as the traction cable having a pre-tensioned state in the assembled state, or a connection state in which tension force can be transmitted through its fixed end when the two ends of the traction cable are relatively far apart and the forefoot region is subjected to bending force. Attached Figure Description

[0036] 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.

[0037] Figure 1 This is a schematic diagram of the shoe structure according to Embodiment 1 of the present invention; Figure 2 This is a cross-sectional schematic diagram of the shoe according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the structure of the shoe anchoring component according to Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the structure of the shoe anchoring component according to Embodiment 3 of the present invention; Figure 5 This is a schematic diagram of the shoe structure involved in Embodiment 4 of the present invention; Figure 6 This is a schematic diagram of the shoe structure according to Embodiment 5 of the present invention; Figure 7 This is a schematic diagram of the shoe structure according to Embodiment 6 of the present invention; Figure 8 This is a schematic diagram of the shoe structure according to Embodiment 7 of the present invention.

[0038] Explanation of key figure labels: Upper 10; Rear end fixing part 11; Outsole 20; Midsole 21; Anchoring component 22; Anchor point 23; Forefoot flexion area 24; 30; first end 31; second end 32; junction area 33; Tensioner cable 40; Shoe upper thread 50. Detailed Implementation

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

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

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

[0042] Unless otherwise expressly defined, the terms "fixed connection," "fixed installation," or "fixed connection" used in the claims, description, and drawings of this invention should be interpreted broadly to refer to any connection method in which there is no displacement or relative rotation relationship between the two parties. In other words, this includes non-removable fixed connections, detachable fixed connections, integral connections, and fixed connections through other devices or elements.

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

[0044] In this invention, the length direction of the sole 20 refers to the direction from the forefoot area to the heel area or from the heel area to the forefoot area; the width direction of the sole 20 refers to the direction from the inner foot side to the outer foot side or from the outer foot side to the inner foot side; the thickness direction of the sole 20 refers to the direction from the lower surface of the sole 20 to the upper surface or from the upper surface to the lower surface. The inner foot side refers to the side corresponding to the inner side of the foot, and the outer foot side refers to the side corresponding to the outer side of the foot. The descriptions of front, back, upper, lower, inner, and outer directions are all based on the orientation of the shoe in its normal wearing state.

[0045] In this invention, the sidewalls of the midsole 21 refer to the outer peripheral surfaces of the midsole 21 located on both sides of the sole 20 in the width direction. The side located on the inner side of the foot is the inner sidewall, and the side located on the outer side of the foot is the outer sidewall. The forefoot flexion area 24 refers to the area in the forefoot region of the sole 20 that corresponds to the flexion tendency of the metatarsophalangeal joint of the foot and mainly flexes or needs to be restricted from further excessive deformation during running contact, transition, or push-off. The dashed box in the attached drawings is only used to indicate the approximate location of the forefoot flexion area 24 and does not indicate the actual existence of a frame-shaped component on the midsole 21.

[0046] In this invention, the anchor point 23 is exposed on the sidewall of the midsole 21. This can be understood as the anchor point 23 being able to be connected to the traction cable 30 from at least one side of the sidewall of the midsole 21. The anchoring member 22 body can be partially exposed, or mostly embedded in the midsole 21, with only the connection part where the anchor point 23 is located exposed from the sidewall. The tensioned fixed connection can be understood as the traction cable 30 having a pre-tensioned state in the assembled state, or a connection state in which tension force can be transmitted through its fixed end when the two ends of the traction cable 30 are relatively far apart and the forefoot bending area 24 is subjected to force bending.

[0047] Example 1 Reference Figure 1 and Figure 2 Embodiment 1 of the present invention relates to a shoe that facilitates maintaining the rolling shape of the forefoot. The shoe includes an upper 10, a sole 20 and a plurality of traction cables 30, with the upper 10 attached to the sole 20.

[0048] In this embodiment, the upper 10 covers at least a portion of the foot and can be attached to the upper side or periphery of the sole 20 by means of bonding, sewing, hot pressing, or integral molding, so that the upper 10 and the sole 20 together define a wearing space for the foot to enter. A rear end fixing part 11 is provided at the rear end of the upper 10 or in the heel area of ​​the shoe, for fixing the second end 32 of the traction cable 30. The rear end fixing part 11 can be formed in the heel area of ​​the upper 10 or the heel area of ​​the sole 20, or the upper 10 and the sole 20 can jointly provide a fixing base in the heel area.

[0049] The sole 20 includes a midsole 21 and an anchor 22. The midsole 21 forms the main support and cushioning portion of the sole 20 and has sidewalls located on both sides in the width direction of the shoe. The sidewalls of the midsole 21 extend along the length of the sole 20 and form part of the outer perimeter of the midsole 21.

[0050] Anchor 22 is fixed to the midsole 21. This fixing can be that the anchor 22 is embedded inside the midsole 21, or the anchor 22 is covered, clamped or combined with the material of the midsole 21, or the anchor 22 is fixed to a preset receiving position of the midsole 21, as long as the anchor 22 can maintain a stable connection with the midsole 21 and withstand the tension force transmitted by the traction cable 30.

[0051] The anchoring element 22 is provided with several anchor points 23, which protrude from the sidewall of the midsole 21. Through the anchor points 23 protruding from the sidewall of the midsole 21, the traction cable 30 can establish a fixed connection with the anchoring element 22 on the outside of the midsole 21.

[0052] Reference Figure 1 On the same sidewall of the midsole 21, each anchor point 23 can be arranged along the length of the shoe in the forefoot flexion area 24 of the midsole 21. Multiple anchor points 23 are arranged at intervals, so that the first ends 31 of multiple traction cables 30 can be fixed at different positions in the forefoot flexion area 24 respectively. Figure 1 The main illustration shows the arrangement of the traction cable 30 and anchor point 23 on one side of the shoe. In actual implementation, the anchor point 23 can be set on both the inner and outer walls of the midsole 21, and the traction cable 30 can also be set on both the inner and outer sides of the shoe, so that the forefoot bending area 24 forms a tension constraint on both sides of the shoe width direction.

[0053] Each traction cable 30 has a first end 31 and a second end 32. The first end 31 of each traction cable 30 is fixed to the forefoot flexion area 24 of the midsole 21 via a corresponding anchor point 23. The second end 32 of each traction cable 30 extends rearward and upward at an angle to securely connect to the rear end of the shoe with tension. The traction cable 30 can be a cable or rope-like component capable of transmitting tension, or it can be a wire-like component formed by weaving or twisting multiple strands of fiber. The traction cable 30 can be in a pre-tensioned state in the assembled state, or it can be tightened and transmit tension when the forefoot flexion area 24 is subjected to force deformation and the two ends of the traction cable 30 are relatively far apart.

[0054] Reference Figure 2 In one specific structure, the anchor 22 extends through and is embedded in the midsole 21 in the width direction of the shoe. The anchor 22 is exposed or adjacent to the side walls of the midsole 21 at both ends in the width direction, forming anchor points 23 at each end. Thus, the same anchor 22 can form a lateral fixing base in the width direction of the shoe. After the first end 31 of the traction cable 30 is connected to the anchor point 23 at the side wall, its tension can be transmitted through the anchor point 23 to the anchor 22, and then from the anchor 22 to the interior of the midsole 21.

[0055] In this embodiment, the anchoring member 22 can be a plate-shaped component disposed in the forefoot area of ​​the midsole 21, with its two side edges in the shoe width direction exposed on the sidewall of the midsole 21, and provided with the aforementioned anchor points 23. These anchor points 23 are arranged sequentially at predetermined intervals along the shoe length direction and are connected to the first ends 31 of a plurality of traction cables 30.

[0056] In this embodiment, the anchor point 23 can be at least one of a wire hole, a wire groove, a lug, a protruding post, or a hook. Multiple anchor points 23 can have the same structure or different structures on the same sole 20. Regardless of the specific form of the anchor point 23, it is disposed on the anchoring member 22 and exposed at least at the sidewall of the midsole 21, allowing the first end 31 of the traction cable 30 to pass through, bypass, or be hung. When the anchor point 23 is a wire hole, the wire hole can penetrate the exposed portion of the anchoring member 22 or the local structure on the anchoring member 22 used to connect the traction cable 30, and the first end 31 of the traction cable 30 is fixed after passing through the wire hole. The wire hole can prevent the first end 31 of the traction cable 30 from disengaging from the anchor point 23, allowing the tension of the traction cable 30 to be transmitted to the anchoring member 22 when it is tensioned. When the anchor point 23 is a wire groove, the wire groove can be formed at the exposed position on the outer periphery of the anchoring member 22, and the first end 31 of the traction cable 30 can be embedded in, bypass, or pass through the wire groove. The cable groove can limit the movement of the traction cable 30, allowing the first end 31 of the traction cable 30 to connect to the anchor 22 at a predetermined position. When the anchor point 23 is a lug, the lug can partially protrude from the outer periphery of the anchor 22, allowing the traction cable 30 to pass through or wrap around it. The lug can have a hole for the traction cable 30 to pass through, or its outer edge can be used for the traction cable 30 to wrap around. When the traction cable 30 is tensioned, the lug transmits the tension of the traction cable 30 to the anchor 22. When the anchor point 23 is a post, the post can protrude from the anchor 22 at the position exposed on the side wall of the bottom 21, and the first end 31 of the traction cable 30 can wrap around the post or be hung on the post. The outer periphery of the post provides a base for the traction cable 30 to wrap around, allowing the traction cable 30 to maintain its connection with the anchor 22 under tension. When anchor point 23 is a hook, the first end 31 of the traction cable 30 can be hooked, and the traction cable 30 is prevented from detaching by the bending or limiting part of the hook. The hook can be used for quick positioning of the end of the traction cable 30, or it can be used in conjunction with the fold-back fixing structure of the end of the traction cable 30.

[0057] Furthermore, the first end 31 of the traction cable 30 can be folded back after passing through the corresponding anchor point 23 and fixed by at least one of the following methods: binding, braiding and folding back, clamping, crimping, or gluing. Specifically, after the first end 31 of the traction cable 30 passes through the cable hole or around the lug, protrusion, or hook, it can be folded back towards the main body of the traction cable 30; the folded end can be bound and fixed to the main body of the traction cable 30, or it can be folded back and locked by braiding, or it can be clamped by clamping, crimped by crimping, or fixed by gluing. The above fixing methods can be used individually or in combination.

[0058] With the above structure, the first end 31 of the traction cable 30 is stably fixed at the anchor point 23. When the traction cable 30 is tensioned, the tension force of the first end 31 is transmitted to the anchoring member 22 through the anchor point 23, and the anchoring member 22 is fixedly connected to the midsole 21, thereby enabling the traction cable 30 to reliably act on the forefoot bending area 24 of the midsole 21. The specific structure of the anchor point 23 can be selected according to the cross-sectional shape of the traction cable 30, the arrangement of the anchoring member 22, and the space of the sidewall of the midsole 21, and is not limited to the number and specific shape shown in the attached drawings.

[0059] Preferably, the elastic modulus of the material of the anchor 22 is greater than that of the material of the midsole 21 adjacent to the anchor 22. Because the anchor 22 has a higher resistance to deformation than the material of its adjacent midsole 21, the anchor point 23 can maintain a more stable position and shape when subjected to the tension of the traction cable 30, and the first end 31 of the traction cable 30 can also be more reliably fixed to the forefoot bending area 24 of the midsole 21 through the anchor point 23.

[0060] In this embodiment, the first ends 31 of multiple traction cables 30 are respectively connected to anchor points 23 at different positions in the forefoot flexion area 24. Each traction cable 30 extends backward and upward from its corresponding anchor point 23. The second ends 32 of each traction cable 30 can be connected to the same rear end fixing part 11 at the rear end of the shoe, so that multiple traction cables 30 work together at a preset rear end fixing position. Overall, the multiple traction cables 30 in this embodiment cooperate to form an unfolded fan-shaped tensioning path.

[0061] When the forefoot flexion area 24 tends to bend or flatten during running contact, transition, or push-off, the traction cable 30 is tightened between the anchor point 23 and the rear fixing part 11. At this time, the second end 32 of the traction cable 30 is fixed by the rear end of the shoe, and the first end 31 of the traction cable 30 is fixed to the anchor 22 via the anchor point 23. The tension generated after the traction cable 30 is tightened is transmitted to the forefoot flexion area 24 of the midsole 21 through the anchor point 23 and the anchor 22, thereby forming a tensile constraint on this area. As a result, when the forefoot flexion area 24 is subjected to force, it is not easy for the local flexible material of the midsole 21 to bear the concentrated tension of the traction cable 30 alone. The tensile constraint of the traction cable 30 can act more stably on the midsole 21 through the anchor 22.

[0062] Example 2 Reference Figure 3 The main difference between this embodiment and Embodiment 1 is that the anchor 22 is embedded in the midsole 21 and is at least partially circumferentially arranged around the midsole 21; the anchor point 23 is located on the outer periphery of the anchor 22 and protrudes from the side wall of the midsole 21. Additionally, the shoe in this embodiment also includes several tensioning cables 40.

[0063] Specifically, the anchor 22 may be arranged along the outer periphery of the forefoot region or the forefoot flexion region 24 of the midsole 21, forming at least a partially circumferential anchoring base around the midsole 21. The anchor 22 may extend continuously along the outer periphery of the midsole 21 or extend along a local area of ​​the periphery of the midsole 21, as long as it can provide anchor points 23 at the sidewalls of the midsole 21 for the traction cable 30 to connect to. The anchor points 23 are located at the outer periphery of the anchor 22 and protrude from the inner sidewall, outer sidewall, or at least both of the midsole 21.

[0064] In this embodiment, the tension cable 40 is disposed inside the midsole 21. The two ends of the tension cable 40 span the width of the shoe and are respectively fixed to the anchoring member 22 at positions corresponding to the inner and outer sides of the midsole 21. The tension cable 40 can be one or more cables, and multiple tension cables 40 can be arranged at intervals along the length of the shoe, each corresponding to a different anchor point 23. After the tension cable 40 is connected to the anchoring member 22, a lateral force-bearing structure connecting the inner and outer foot anchoring positions can be formed inside the sole 20.

[0065] In one specific embodiment, the anchor point 23 corresponds to the position of at least a portion of the tension cable 40, and the traction cable 30 connected to the anchor point 23 is connected to the corresponding tension cable 40. That is, when the first end 31 of the traction cable 30 is fixed to the anchor point 23, it can simultaneously form a connection with the end of the tension cable 40, so that the tension force of the traction cable 30 can be directly transmitted to the tension cable 40 through the anchor point 23.

[0066] In another specific embodiment, the traction cable 30 connected to the anchor point 23 and the corresponding tension cable 40 are integral components. For example, the traction cable 30 can enter or connect to the interior of the midsole 21 via the anchor point 23 at the sidewall of the midsole 21, and continuously form the same force-bearing component with the tension cable 40 spanning the shoe width direction. In this case, the portion of the traction cable 30 located on the outside of the midsole 21 and the portion of the tension cable 40 located inside the midsole 21 can continuously transmit tension.

[0067] Furthermore, the anchor points 23 of the traction cables 30, at least partially located on the inner and outer sides of the shoe, correspond to each other along the width direction of the shoe and are connected to the same tension cable 40, or are integral components with the same tension cable 40. In this way, the traction cables 30 at corresponding positions on the inner and outer sides of the shoe can establish a lateral connection through the same tension cable 40. When the forefoot flexion area 24 is stressed and the traction cables 30 are tensioned, the tension force of one side of the traction cable 30 can be transmitted not only to the anchoring member 22 via the anchor point 23, but also to the anchoring position on the other side of the shoe width direction via the tension cable 40, thus allowing the anchor points 23 on both the inner and outer sides to share the stress.

[0068] In this embodiment, the force path during forefoot flexion can be represented as follows: the second end 32 of the traction cable 30 is fixed at the rear end of the shoe, and the traction cable 30 pulls its first end 31 forward; the tension at the first end 31 is transmitted to the peripheral anchor 22 via the anchor point 23; when the anchor point 23 corresponds to the tension cable 40, the tension can be further transmitted to the tension cable 40, and then transmitted from the tension cable 40 across the shoe width direction to the other anchor position. Thus, the anchor 22 and the tension cable 40 together provide a more stable fixing base for the traction cable 30, enabling the traction cable 30 to form a more reliable traction constraint on the forefoot flexion area 24.

[0069] Example 3 Referring to Figure 4, the main difference between this embodiment and the previous embodiments is that the tension cable 40 provided on the anchor 22 is a webbing with a preset width. For example, this webbing can be thermoplastic polyurethane webbing.

[0070] Specifically, the anchor 22 extends at least partially along the periphery of the midsole 21 and has multiple anchor points 23 at positions corresponding to the inner and outer sides of the midsole 21. A tension cable 40 is located inside the midsole 21 and extends along the width of the shoe. The two ends of the tension cable 40 are respectively fixed to the anchor 22 at positions corresponding to the inner and outer sides of the midsole 21.

[0071] In this embodiment, the tension cable 40 is a flat strip structure, with its width greater than its thickness. Multiple tension cables 40 are spaced apart along the length of the shoe and each spans the interior of the midsole 21. At least some ends of the tension cables 40 correspond to the positions of the anchor points 23, allowing the tension force generated by the traction cable 30 connected to the anchor point 23 to be transmitted to the corresponding tension cable 40 via the anchor point 23 and the anchoring member 22.

[0072] As shown in Figure 4, the webbing-like tension cable 40 can form multiple lateral force-bearing units inside the midsole 21. Compared to a linear tension cable, the webbing-like tension cable 40 can cooperate with the midsole 21 or the anchor 22 through its wider band, so as to form a more stable lateral connection base between the anchoring positions on the inner and outer sides.

[0073] Example 4 Referring to Figure 5, the main difference between this embodiment and the previous embodiments is that the traction cable 30 uses a webbing with a preset width. For example, this webbing can be thermoplastic polyurethane webbing.

[0074] Specifically, the traction cable 30 is a flat, strip-shaped structure, with a width greater than its thickness. The first ends 31 of the multiple traction cables 30 are respectively fixed to the forefoot bending area 24 of the midsole 21 through corresponding anchor points 23, and the second ends 32 of the multiple traction cables 30 extend backward and upward at an angle and are fixedly connected to the rear fixing part 11 of the shoe.

[0075] As shown in Figure 5, multiple webbing-like traction cables 30 can be arranged along the outer sidewall of the midsole 21 and extend from the forefoot flexion area 24 to the rear of the shoe. The first end 31 of each traction cable 30 corresponds to an anchor point 23 at a different position in the forefoot flexion area 24, and the second end 32 of each traction cable 30 can be connected to the rear fixing part 11 at the rear of the shoe.

[0076] In this embodiment, after the traction cable 30 adopts a webbing structure, its first end 31 can cooperate with the anchor point 23 or the anchoring member 22 through a wider strip surface, thereby increasing the connection area of ​​the traction cable 30 at the anchor point 23. When the forefoot bending area 24 is bent under force, the webbing-shaped traction cable 30 is tightened between the corresponding anchor point 23 and the rear fixing part 11, and forms a tensile constraint on the forefoot bending area 24 through the anchoring member 22.

[0077] Example 5 Referring to Figure 6, the main difference between this embodiment and the previous embodiment is that the shoe also includes several upper straps 50. The upper straps 50 span the upper 10 along the width direction of the shoe, and their two ends are respectively fixed to anchor points 23 on the inner and outer walls of the midsole 21.

[0078] Specifically, the upper cable 50 is located on the outside of the upper 10, and extends from one side of the shoe across the upper 10 to the other side. Both ends of the upper cable 50 are connected to anchor points 23 exposed on the side walls of the midsole 21. There can be one or more upper cables 50. Multiple upper cables 50 can be arranged at intervals along the length of the shoe, or they can be arranged crosswise or parallel on the upper 10, as long as they can cross the upper 10 and connect to the anchor points 23 on the side walls of the midsole 21.

[0079] In this embodiment, the upper cable 50 can be connected to different anchor points 23, or it can be connected to anchor points 23 in the same area as the traction cable 30. When the upper cable 50 and the traction cable 30 are connected to the same anchor point 23 or adjacent anchor points 23, the anchoring member 22 can provide a fixed foundation for both the traction cable 30 and the upper cable 50. When the anchor point 23 bears the force at the end of the upper cable 50, the force can be transmitted to the anchoring member 22, and then from the anchoring member 22 to the midsole 21, so that the upper cable 50 does not have to rely solely on the material of the upper 10 itself for end fixation.

[0080] After the upper cable 50 crosses the upper 10, it forms an external constraint in the width direction of the upper 10. When worn, the foot tends to push against or stretch the upper 10. The two ends of the upper cable 50 are fixed to the side walls of the midsole 21 through anchor points 23, allowing the upper cable 50 to cooperate with the upper 10 to cover the foot. At the same time, the traction cable 30 is still connected to the forefoot flexion area 24 of the midsole 21 through its first end 31, anchor point 23, and anchor 22, and is fixed to the rear of the shoe through its second end 32. Thus, the upper cable 50 is mainly used to enhance the lateral constraint of the upper 10 area, and the traction cable 30 is mainly used to form a tension force path between the forefoot flexion area 24 and the rear of the shoe. Both can obtain a stable fixed foundation through the anchor point 23 and the anchor 22.

[0081] Example 6 Referring to Figure 7, the main difference between this embodiment and the previous embodiment is that there can be multiple anchoring elements 22, and each anchoring element 22 is arranged at intervals along the length of the shoe. Each anchoring element 22 can form anchor points 23 exposed on both sides of the midsole 21 at both ends in the width direction of the shoe. In this way, multiple anchoring positions distributed front and back can be formed in the forefoot flexion area 24, and the traction cables 30 located on the inner and outer sides of the shoe can be connected to the corresponding anchor points 23 respectively. When each traction cable 30 is tensioned, the tension of the traction cable 30 is borne by multiple anchoring elements 22 and distributed to the midsole 21, reducing the stress concentration at a single anchor point 23.

[0082] Example 7 Referring to Figure 8, the main difference between this embodiment and the previous embodiment is that the path of the traction cable 30 on the side of the upper 10 and the rear of the shoe is different.

[0083] After passing through the intersection area 33, each traction cable 30 continues to extend towards the rear end of the shoe and is fixedly connected to the rear end of the shoe with its second end 32. In this embodiment, the second ends 32 of each traction cable 30 are distributed and connected to different height positions or different front and rear positions at the rear end of the shoe to form a fan-shaped tensioning path that extends from the forefoot bending area 24 toward both sides of the rear end of the shoe.

[0084] Preferably, the second end 32 of the traction cable 30 is positioned higher as the first end 31 is further back. That is, along the length of the shoe, the second end 32 of the traction cable 30 connected to the more forward anchor point 23 can be fixed at a relatively low position at the rear end of the shoe; the second end 32 of the traction cable 30 connected to the more rear anchor point 23 can be fixed at a relatively high position at the rear end of the shoe. Thus, different traction cables 30 form different inclined paths between the forefoot bending area 24 and the rear end of the shoe.

[0085] In this embodiment, the traction cables 30 converge and disperse below the shoe opening, thus avoiding the shoe opening area and ensuring that the traction cables 30 do not affect the foot's putting on and taking off. When the forefoot bending area 24 is subjected to force and bending, each traction cable 30 is tightened between its first end 31 and second end 32. The second end 32 is fixed by the rear end of the shoe, and the first end 31 is fixed to the anchor 22 via the corresponding anchor point 23. The tension generated by the traction cables 30 is borne and transmitted by the corresponding anchor point 23, the anchor 22, and the midsole 21, thereby forming a traction constraint on different positions of the forefoot bending area 24.

[0086] It should be noted that the aforementioned embodiments can be implemented individually or in combination without contradicting each other. For example, Figure 1 and Figure 2 The through-type anchor 22 shown can be used with Figure 5 The specific shapes of anchor point 23 shown are used in combination; Figure 3 The anchoring element 22 and tension cable 40 shown in the diagram can be connected with... Figure 6 The arrangement of the traction cables 30, which converge and then disperse, is used in combination. Figure 4 The shoe upper cable 50 shown can also be used in conjunction with the anchor points 23 and anchoring elements 22 in any embodiment. The number of traction cables 30, anchor points 23, anchoring elements 22, and their specific outlines in the accompanying drawings are for illustrative purposes only. In actual implementation, adjustments can be made according to the shoe size, the shape of the sole 20, and the range of the forefoot flexion area 24. The traction cable 30 can be made of high-molecular-weight polyethylene thread, or, depending on the shoe's support requirements, elastic or non-elastic thread.

[0087] In this invention, the “cable” in the traction cable 30, tension cable 40 and shoe upper cable 50 can be understood as a flexible long strip component capable of transmitting tension force, which can be a linear, rope-like, cord-like, strip-like, webbing-like or sheet-like component; correspondingly, the wire hole and wire groove can be a hole-like or groove-like structure for the linear, rope-like, cord-like or strip-like component to pass through, bypass or limit.

[0088] This invention discloses a shoe that facilitates maintaining the rolling shape of the forefoot. The shoe includes an upper 10, a sole 20, and a plurality of traction cables 30. The upper 10 is attached to the sole 20. The sole 20 includes a midsole 21 and an anchor 22. The anchor 22 is fixed to the midsole 21 and has a plurality of anchor points 23 exposed on the sidewall of the midsole 21. The first end 31 of each traction cable 30 is fixed to the forefoot bending area 24 of the midsole 21 through the corresponding anchor point 23, and the second end 32 of each traction cable 30 extends backward and upward at an angle to be tensioned and fixedly connected to the rear end of the shoe.

[0089] The forefoot area of ​​the sole 20 needs to flex with the metatarsophalangeal joint during running contact, transition, and extension, while also preventing the forefoot area from being excessively flattened under pressure and disrupting the rolling shape of the sole 20. This solution uses a traction cable 30, with its first end 31 fixed to the forefoot flexion area 24 of the midsole 21, and its second end 32 extending rearward and upward at an angle and being tensioned and fixedly connected to the rear of the shoe. This allows the traction cable 30 to form a tensioned force path between the forefoot flexion area 24 and the rear of the shoe. When the forefoot area tends to flex and flatten, the traction cable 30 can generate a pulling effect between the forefoot flexion area 24 and the rear of the shoe, converting further deformation of the forefoot flexion area 24 into tension in the traction cable 30. This restricts the forefoot flexion area 24, helping to maintain the rolling shape of the sole 20 from the forefoot to the rear. Based on this, since the midsole 21 is usually made of a flexible material such as foam, if the traction cable 30 is directly fixed to the midsole 21, the concentrated tension generated during repeated tensioning can easily cause local deformation, loosening, or pull-out of the fixed position, making it difficult for the traction cable 30 to participate in the forefoot bending restriction stably for a long time. This solution fixes the anchor 22 to the midsole 21 and connects it to the first end 31 of the traction cable 30 through the anchor point 23 exposed on the side wall of the midsole 21. This allows the tension of the first end 31 of the traction cable 30 to be transmitted from the anchor point 23 to the anchor 22 connected to the midsole 21, and then from the anchor 22 to the midsole 21, thus forming a more stable connection structure. Therefore, while the shoe restricts the bending deformation of the forefoot through the tension path of the traction cable 30, the anchor 22 and anchor point 23 can provide a stable fixed base for the first end 31 of the traction cable 30, so that the tension constraint of the traction cable 30 can reliably act on the bending area 24 of the forefoot, and help reduce the reliance on large-area plate-shaped rigid components, and improve the problems of increased weight of the sole 20 and complex internal assembly.

[0090] 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 shoe that facilitates maintaining the rolling posture of the forefoot, characterized in that, include: shoe upper (10); The sole (20) is attached to the upper (10); the sole (20) includes a midsole (21) and anchors (22); the anchors (22) are fixed to the midsole (21) and have several anchor points (23) protruding from the sidewall of the midsole (21); and A plurality of traction cables (30), the first end (31) of each traction cable (30) being fixed to the forefoot flexion area (24) of the midsole (21) via the corresponding anchor point (23), and the second end (32) of each traction cable (30) extending backward and upward at an angle to be tensioned and fixedly connected to the rear end of the shoe.

2. The shoe as described in claim 1, characterized in that, The anchor point (23) is provided on both the inner and outer walls of the midsole (21), and the traction cable (30) is provided on both the inner and outer sides of the shoe.

3. The shoe as described in claim 1, characterized in that, On the same side wall of the midsole (21), each of the anchor points (23) is arranged along the length of the shoe in the forefoot bending area (24) of the midsole (21).

4. The shoe as described in claim 1, characterized in that, The anchor (22) extends through and is embedded in the midsole (21) in the width direction of the shoe, so that its anchor point (23) is exposed on both sides of the midsole (21).

5. The shoe as described in claim 4, characterized in that, The number of anchors (22) is multiple, and each anchor (22) is arranged at intervals along the length direction of the shoe. Each anchor (22) forms an anchor point (23) at both ends of the width direction of the shoe that is exposed on both sides of the midsole (21).

6. The shoe as described in claim 2, characterized in that, The anchor (22) is embedded in the midsole (21) and is at least circumferentially disposed therein along the periphery of the midsole (21); the anchor point (23) is located on the outer periphery of the anchor (22) and protrudes from the side wall of the midsole (21).

7. The shoe as claimed in claim 6, characterized in that, It also includes several tension cables (40), which are located inside the midsole (21) and whose two ends are fixed to the anchor (22) at positions corresponding to the inner and outer sides of the midsole (21) across the width direction of the shoe.

8. The shoe as claimed in claim 7, characterized in that, The anchor point (23) corresponds to at least part of the tension cable (40), and the traction cable (30) connected to the anchor point (23) is connected to or is an integral component of the tension cable (40) at the corresponding position.

9. The shoe as claimed in claim 8, characterized in that, At least some of the anchor points (23) of the traction cable (30) located on the inner and outer sides of the shoe correspond to each other along the width direction of the shoe and are connected to the same tension cable (40), or are integral components with the same tension cable (40).

10. The shoe as claimed in claim 1, characterized in that, The elastic modulus of the material of the anchor (22) is greater than that of the material of the midsole (21) adjacent to the anchor (22).

11. The shoe as claimed in claim 1, characterized in that, The second end (32) of each of the traction cables (30) is connected to the rear end of the shoe.

12. The shoe as claimed in claim 1, characterized in that, The further back the first end (31) is, the higher the second end (32) of the traction cable (30) is.

13. The shoe as claimed in claim 12, characterized in that, Along the length of the shoe from front to back, each of the traction cables (30) converges and then disperses at a position below the shoe opening corresponding to the upper (10).

14. The shoe as claimed in claim 1, characterized in that, It also includes several upper straps (50), which cross the upper (10) along the width direction of the shoe, and whose two ends are respectively fixed to the anchor points (23) on the inner and outer walls of the midsole (21).

15. The shoe as claimed in claim 1, characterized in that, The anchor point (23) is at least one of a wire hole, a wire groove, a lug, a protruding post, or a hook, and the first end (31) of the traction cable (30) passes through, goes around, or is attached to the corresponding anchor point (23).

16. The shoe as claimed in claim 15, characterized in that, The first end (31) of the traction cable (30) passes through the corresponding anchor point (23) and then folds back, and is fixed by at least one of binding, braiding back, clamping, pressing or gluing.

Images