Foot buffering device

Abstract

A foot buffering device is arranged between the foot of a user and the ground and at least comprises a buffering body and a gait guiding structure, and the hardness range of materials of the gait guiding structure is from 40 to 70 in the Shore C hardness index range. The fifth compressive deformation resistance of the gait guiding structure material is larger than the fourth compressive deformation resistance of the rear foot part of the buffering body, the included angle between the first edge of the groove structure of the gait guiding structure and the extending direction of the transverse arch of the foot of the user is smaller than 30 degrees, and the included angle between the second edge of the groove structure of the gait guiding structure and the extending direction of the longitudinal arch of the foot of the user is smaller than 30 degrees. The depth of the groove structure is gradually reduced along the extension direction of the first edge, the depth of the groove structure in the edge area of the buffer main body is larger than that in the central area, and the thickness of the gait guide structure is gradually reduced along the extension direction of the first edge to form an inclined plane; the inclined plane enables the first thickness on the inner side of the rear foot part to be larger than the second thickness on the outer side of the rear foot part, and gait correction can be achieved when a user walks.

Description

Technical Field

[0001] This utility model relates to the field of foot protection technology, and in particular to a foot cushioning device. Background Technology

[0002] The human foot is composed of multiple bones connected by joints, ligaments, and tendons to maintain stability and provide propulsion. Therefore, abnormalities in the coordinated functioning of these bones, tendons, and ligaments can lead to various problems and diseases, such as the commonly diagnosed flat feet, high arches, Achilles tendinitis, and plantar fasciitis. Many shoes and insoles on the market claim to improve high arches and flat feet by providing proper arch support, hoping to reduce the adverse effects and discomfort caused by these conditions. However, these shoe and insole designs often rely on static arch models for correction and fail to consider the fundamental changes in foot movement during dynamic walking.

[0003] Research indicates that the point of force application on the sole of the foot during walking is related to the arch structure. In a normal arch structure (commonly known as the midfoot), the path of the point of maximum pressure movement during walking is as follows: 901 Figure 1a As shown, the point of maximum pressure moves from the lateral side of the calcaneus along the described route to the big toe.

[0004] Figure 1b This shows the movement path 902 of the point of maximum pressure during walking in overpronation. Because of the large inward rotation of the forefoot, the center of gravity shifts inward when walking, causing the movement path of the point of maximum pressure to deviate inward. This makes the forefoot area 91 near the second and third toes and the inner side area 92 of the big toe prone to calluses, which are often also the areas where the soles of shoes wear out severely.

[0005] and Figure 1c This is a schematic diagram (903) showing the movement path of the point of maximum pressure during walking in supination. Suprapronation is mainly caused by a small arch collapse, with pressure biased towards the outer forefoot area (93) and the calcaneus area (94), making these areas prone to calluses and severe wear on the shoe soles.

[0006] Furthermore, while there is a proper state of foot twisting during walking, some people experience excessive untwist in their hindfoot, leading to poor gait. Therefore, the primary motivation for proposing this project is to find a solution that improves these issues and provides a better foot cushioning device. Utility Model Content

[0007] This utility model embodiment provides a foot cushioning device for use between a user's foot and the ground, to improve upon or solve the aforementioned technical problems in the prior art. The device includes at least: a cushioning body located between the user's foot and the ground, the cushioning body having a rearfoot portion, the material of the rearfoot portion having a fourth compressive strength; and a gait guiding structure disposed on the rearfoot portion, located between the cushioning body and the ground, the gait guiding structure material having a hardness range between 40 and 70 on the Shore C hardness index, and the fifth compressive strength of the gait guiding structure material being greater than the fourth compressive strength. The gait guiding structure includes a first surface, a second surface, and a groove structure, the angle between the first side of the groove structure and the extension direction of the transverse arch of the user's foot is less than 30°, and the groove structure... The second side of the structure forms an angle of less than 30° with the longitudinal arch of the user's foot. The depth of the groove structure gradually decreases with the extension direction of the first side. The depth of the groove structure located in the edge region of the buffer body is greater than the depth of the groove structure located in the central region of the buffer body. The thickness of the gait guidance structure gradually decreases with the extension direction of the first side, forming a slope. The slope makes the first thickness between the first surface and the second surface on the inner side of the hind foot greater than the second thickness between the first surface and the second surface on the outer side of the hind foot. When the user walks, the slope guides the user to be in a relatively twisted state after the hind foot fully touches the ground. Then, due to the easily deformable groove structure, the hind foot is guided to avoid an excessively untwisted state, thereby achieving gait correction.

[0008] In one embodiment of this utility model, the cushioning body is an insole placed in the shoe, and the gait guidance structure is located between the shoe and the insole.

[0009] In one embodiment of this utility model, the insole is a foam material, which includes one of ethylene-vinyl acetate copolymer, polyurethane, and slow rebound sponge.

[0010] In one embodiment of this utility model, the hardness of the gait guidance structure is Shore C hardness index 65.

[0011] The technical solution provided by this utility model has at least the following beneficial effects:

[0012] When a user wearing the foot cushioning device walks, the ramp can guide the user to be in a relatively twisted state after the user's hind foot fully touches the ground, and then, due to the more deformable groove structure, guide the hind foot to avoid an excessive untwist state, thereby correcting the gait and reverting it to a normal gait. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1a , Figure 1b and Figure 1c This is a schematic diagram of the movement path of the three points of maximum pressure during walking.

[0015] Figure 2a , Figure 2b , Figure 2c , Figure 2d as well as Figure 2e This is a schematic diagram of the structure of a cushioning body (such as an outsole or insole) provided in an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of another shoe sole structure provided in an embodiment of the present invention.

[0017] Figure 4a , Figure 4b , Figure 4c , Figure 4d as well as Figure 4e This is a schematic diagram of another outsole structure provided in this embodiment of the present invention.

[0018] Figure 5a , Figure 5b , Figure 5c , Figure 5d This is a schematic diagram illustrating the construction of another outsole structure provided in this embodiment of the present invention.

[0019] Figure 6a as well as Figure 6b This is a schematic diagram illustrating the construction of two more outsole structures provided in this embodiment of the present invention.

[0020] Figure 7a as well as Figure 7bThese are schematic diagrams showing the structural details of the first and second stable inclined bottom feet, respectively.

[0021] Figure 8a as well as Figure 8b These are bottom and rear views of another embodiment of the right insole in a foot cushioning device provided by this utility model.

[0022] Figure 8c From Figure 8a Cut off line segment 89 in the middle, and then look at the cross-section from the direction of arrow 88.

[0023] Figure 9a as well as Figure 9b These are bottom and rear views of another embodiment of the left insole in a foot cushioning device provided by this utility model.

[0024] Figure 9c From Figure 9a Cut off line segment 89 in the middle, and then look at the cross-section from the direction of arrow 88. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that the terms "first," "second," and "one end," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, products, or devices.

[0027] Please see Figure 2a , Figure 2b as well as Figure 2cThis example illustrates a schematic diagram of an embodiment of a cushioning element (e.g., an outsole or insole) located between the user's foot and the ground, developed to improve upon existing technology. In this example, the cushioning element is an outsole structure, primarily divided into a rearfoot portion 71, a midfoot portion 72, and a forefoot portion 73. The material of the rearfoot portion 71 within the outsole structure possesses a first resistance to compressive deformation, which can be defined by the material's hardness. For instance, the material of the rearfoot portion 71 can be rubber, foam, plastic, or a similar polymer, with a hardness ranging from approximately 30 to 90 on the Shore 00 hardness index, making it a resilient cushioning material. This example primarily addresses an improvement solution for individuals with abnormal arches due to outpronation.

[0028] Figure 2a For example, a top view with the sole 11 facing upwards shows that a compression-reducing structure 119 is provided on the inner side of the rearfoot portion of the sole 11 (in this case, for example, defined as the left edge of the right foot midline and the right edge of the left foot midline). In this embodiment, the compression-reducing structure 119 is made of the same material, and mainly includes a groove structure 110 and sidewalls 111 and bottom 112 surrounding the groove structure 110. The material of the sidewalls 111 and bottom 112 is substantially the same as that of the rearfoot portion of the sole 11. Basically, the groove structure 110 can be directly cut into the rearfoot portion of the sole 11, or it can be completed during the sole molding process. In this way, the second compression-reducing capacity of the compression-reducing structure 119, made of the same material, will be less than the first compression-reducing capacity originally possessed by the rearfoot portion 71.

[0029] For ease of manufacturing, the first opening 1101 of the groove structure 110 is essentially a quadrilateral. The long side 11011 of the quadrilateral is roughly parallel to the direction of extension of a series of transverse arches on the foot above the sole (parallelism is the preferred implementation, but a rotation of ±30 degrees is acceptable). The short side 11012 of the quadrilateral is roughly parallel to the direction of extension of a series of longitudinal arches on the foot above the sole (parallelism is the preferred implementation, but a rotation of ±30 degrees is acceptable). In this way, when the user is standing statically, the reduced compression resistance structure still maintains sufficient support strength to resist the compression deformation caused by body weight on the sole, preventing the user from experiencing a foreign body sensation at the location of the reduced compression resistance structure. When the user walks, the easier deformation can enhance the tendency for the rear foot to pronate upon landing, thereby correcting the gait of those with insufficient pronation (external pronation) and restoring them to a normal gait.

[0030] Figure 2b This is a structural schematic diagram viewed from the extension direction of the long side 11011 of the quadrilateral. From this angle, the second opening 1102 of the groove structure 110 can be seen. Its height 11021 can be designed to be 3 to 5 mm, and its width 11022 can be designed to be about 5 to 7 mm. The depth of the groove structure 110 gradually decreases from the edge to the center along the extension direction of the long side 11011 of the quadrilateral. That is, the depth of the groove structure 110 in the edge area of ​​the sole is greater than the depth of the groove structure 110 in the center area of ​​the sole. This allows the compressible deformation capacity of the groove structure 110 in the edge area of ​​the sole to be greater than that in the center area. In this way, the easier deformation can enhance the tendency of the rear foot to pronate after landing, thereby correcting the gait of those with insufficient pronation (external pronation) and correcting it to a normal gait.

[0031] Furthermore, besides using easily manufactured cavities, the groove structure 110 can also be filled with other materials. For example... Figure 2cAs shown, a wedge 13 with the same shape as the groove structure 110 is presented. Its sidewalls also have a height 11021 and a width 11022. It can be made of a material with low resistance to compressive deformation. When filled into the groove structure 110, it can achieve a similar effect to the groove structure 110 with a cavity, and can also prevent foreign objects (such as small stones on the ground) from being accidentally stuck. For example, the material of the wedge 13 can be a softer material (i.e., more easily deformable) than the cushioning body. When the material hardness range of the hind foot part 71 is between 30 and 90 on the Shore 00 hardness index, the material hardness range of the wedge 13 can be selected from the range of 30 ± 20 on the Shore 00 hardness index.

[0032] In addition, the aforementioned groove structure 110, besides being able to... Figure 2a and Figure 2b As shown, the groove structure 110, located outside the lower surface of the sole 11, can also be applied to other cushioning body embodiments. For example... Figure 2d As shown, the groove structure 110 can be provided on the upper surface of the sole 11 and covered by the insole 15. Alternatively, it can be as follows: Figure 2e As shown, the groove structure 150 is disposed in the insole 15, and the hardness range of the material of the insole 15 is approximately between 30 and 90 on the Shore 00 scale. To ensure user comfort, the groove structure 150 can be disposed at an appropriate distance from the upper surface of the insole 15. Alternatively, the groove structure 110 can be a cavity or filled with a wedge-shaped filler of other materials (or 150). A material with low resistance to compressive deformation can be selected to fill the groove structure 110, achieving the same effect as an air-filled groove structure 110. The hardness range of the wedge-shaped filler material can be selected from the Shore 00 hardness index range of 30 ± 20.

[0033] Please see again Figure 3 For example, this case presents a schematic diagram of another embodiment of the outsole structure developed to improve the prior art. The material of the outsole structure (e.g., rubber, foam, plastic or similar polymer) has a hardness range of approximately 30 to 90 on the Shore 00 hardness index. This is mainly an improvement solution proposed for individuals with abnormal arches and pronation feet. Figure 3For example, in a top view with the sole 11 facing upwards, a compression-reducing structure is provided on the outer side of the rearfoot portion of the sole 11 (the right edge of the right foot's midline and the left edge of the left foot's midline). In this embodiment, when it is a groove structure 310 and its surrounding sidewalls and bottom, the first opening 3101 of the groove structure 310 is essentially a quadrilateral. The long side 31011 of the quadrilateral is approximately parallel to the direction of extension of a series of transverse arches of the foot above the sole (parallelism is the preferred embodiment, but rotation of ±30 degrees is acceptable). The short side 31012 of the quadrilateral is approximately parallel to the direction of extension of a series of longitudinal arches of the foot above the sole (parallelism is the preferred embodiment, but rotation of ±30 degrees is acceptable). In this way, when the user is standing statically, the compression-reducing structure still maintains sufficient support strength to resist the compression deformation of the sole caused by the user's weight, so that the user will not experience a foreign body sensation at the location of the compression-reducing structure. However, during walking, it can guide the hind foot to land with less tendency to pronate, thereby correcting the gait of individuals with excessive pronation (pronation foot) and restoring them to a normal gait. The details and location of the groove structure 310 are essentially the same as in the first embodiment described above, and therefore can be referred to... Figure 2b and Figure 2c Examples of this will not be elaborated upon here.

[0034] Please see again Figure 4a For example, this case presents a schematic diagram of the third embodiment of an improved outsole structure developed in the prior art. It is primarily an improvement proposed for individuals with abnormal arches and outward pronation. The outsole material (e.g., rubber, foam, plastic, or similar polymers) has a hardness range of 30 to 90 on the Shore 00 scale. The difference from the first embodiment is that, in addition to providing a first compression deformation reduction structure 41 on the inner side of the rearfoot region of the outsole 11 (the left edge of the right foot midline and the right edge of the left foot midline), this embodiment also adds a second compression deformation reduction structure 42 on the inner side of the forefoot region of the outsole 11 (the left edge of the right foot midline and the right edge of the left foot midline). An example of the first compression deformation reduction structure 41 can be a first groove structure and the surrounding sidewalls and bottom; its design can follow... Figures 2a to 2eThe groove structure 110 or groove structure 150 and its periphery are not described in detail here. The second compression deformation reduction structure 42 can be implemented using the second groove structure and its surrounding sidewalls and bottom. The opening of the second groove structure is essentially a quadrilateral. The short side 4201 of the quadrilateral is approximately parallel to the direction of extension of a series of transverse arches on the foot above the sole (parallelism is the preferred implementation, but rotation of ±30 degrees is acceptable). However, the long side 4202 of the quadrilateral is approximately parallel to the direction of extension of a series of longitudinal arches on the foot above the sole (parallelism is the preferred implementation, but rotation of ±30 degrees is acceptable). The bottom surface of the second groove structure is a bottom with two slopes, and the wedge-shaped object 49, which has the same cavity shape as the second groove structure, has the following shape... Figure 4b As shown, the two inclined surfaces of the wedge 49 can fit into the bottom of the cavity of the second groove structure. The position of the second compression deformation reduction structure 42 is near the lower part of the first metatarsal head of the user's foot. When the user walks, its easier deformation can enhance the guidance of high gear push-off (which can be simply understood as the forefoot being propelled by the big toe side lifting off the ground), thereby correcting the gait of those with insufficient high gear push-off and correcting it to a normal gait. In this embodiment, the design, for example, through the combination of the first compression deformation reduction structure 41 and the second compression deformation reduction structure 42, guides the maximum pressure point to move along the correct path when the center of gravity shifts from the midfoot to the forefoot after the rear foot lands (enhancing the guidance of high gear push-off), which can also correct the gait of those with insufficient pronation (external pronation) and correct it to a normal gait. In addition, a third compression deformation reduction structure (such as...) can also be provided in the midfoot part 72. Figure 4e The groove shown is specifically designed for users with outward-pronation feet and high arches. A third compression-resistance reduction structure 43 (to suppress excessively high arches) can be added inside the midline 721 of the midfoot to correct the gait to normal inward pronation. The details of the third compression-resistance reduction structure can be similar to the first compression-resistance reduction structure, and therefore will not be elaborated further.

[0035] In addition, such as Figure 4c As shown, it is similar to Figure 4a The design is largely the same, the difference being the location of the second compression-resistant deformation-reducing structure 42. Its primary location remains near the lower part of the first metatarsal head of the user's foot, but it can be moved from the original medial edge of the forefoot to, as needed, a location similar to... Figure 4cThe medial side shown (or the area within the dotted box) is used to guide the point of maximum pressure along the correct path, thereby correcting the gait of individuals with insufficient internal pronation (external pronation) and restoring them to a normal gait. Of course, it can also be done as follows... Figure 4d As shown, by completing only the second compression deformation reduction structure 42 and omitting the first compression deformation reduction structure 41, it is still possible to enhance the tendency of guiding the forefoot high gear push-off, thereby correcting the gait of those with insufficient forefoot high gear push-off and correcting it to a normal gait.

[0036] and Figure 3 Similarly, the improvement plan proposed for individuals with abnormal arches and pronation feet mentioned above... Figure 5a For example, the first compression deformation reduction structure 41 and the second compression deformation reduction structure 42 are respectively located on the outer side of the hindfoot (the right edge of the right foot midline and the left edge of the left foot midline) and the inner side of the forefoot (the left edge of the right foot midline and the right edge of the left foot midline). The compression deformation reduction structures, made of the same material, have relatively low compression deformation resistance, so that the user does not experience a foreign body sensation at the location of the compression deformation reduction structure when standing statically. Firstly, even with only the first compression deformation reduction structure 41 and omitting the second compression deformation reduction structure 42, the first compression deformation reduction structure 41 can still correct the gait of individuals with excessive pronation (pronation foot) during walking. The second compression deformation reduction structure 42, located near the first metatarsal head of the user's foot, enhances the tendency to guide high-gear push-off, thereby correcting the gait of those with insufficient high-gear push-off. The combination of the two structures works together to correct the gait to a normal one. As for... Figure 5bThis is an implementation where the first compression deformation reduction structure 41 is omitted, and a second compression deformation reduction structure 42 is only provided on the outer side of the forefoot. The compression deformation reduction structure 41, made of the same material, has a smaller compression deformation capacity, so the user will not experience a foreign body sensation at the location of the compression deformation reduction structure when standing statically. However, when the user walks, its easier deformation can strengthen the tendency to guide the forefoot towards low-gear propulsion, thereby correcting an overly high-gear gait and restoring it to a normal gait. Alternatively, a third compression deformation reduction structure can be provided on the midfoot 72, specifically designed for users with excessive arch collapse (the arch collapses before the foot touches the ground). This third compression deformation reduction structure 43 (to suppress excessive arch collapse) can be added to the outer side of the midline 721 of the midfoot to guide an overpronation gait and correct it to a normal pronation gait. The details of the third structure for reducing compressive deformation capacity can be selected from a design similar to that of the first structure for reducing compressive deformation capacity, so they will not be described in detail here.

[0037] In the aforementioned first compressive deformation reduction structure 41 and second compressive deformation reduction structure 42, in addition to using a single groove structure, multiple groove structures can also be used, for example... Figure 5c and Figure 5d As shown, this is achieved, for example, by a combination of multiple groove structures 51 on the surface of the sole 50. In this way, when the user is standing statically, the reduced compressive strength structure still maintains sufficient support to resist the compressive deformation caused by body weight on the sole, preventing the user from experiencing any foreign body sensation at the location of the reduced compressive strength structure. However, when the user walks, its greater flexibility in deformation can effectively correct gait.

[0038] Furthermore, when the aforementioned foot cushioning device is made of a material with a hardness range greater than 90 on the Shore A scale (e.g., footwear made of hard materials such as clogs or hard-soled leather shoes), this case could be, for example, as follows: Figure 6aAs shown, a first inclined guiding structure 601 and a second inclined guiding structure 602 are respectively provided on the outer side of the rear foot portion 61 and the inner side of the forefoot portion 63 of the cushioning body 60. The first inclined guiding structure 601 includes a first foot-stabilizing inclined bottom. When the user walks, the first foot-stabilizing inclined bottom can be used to enhance the stability of the rear foot when landing and generate a tendency to guide the user's foot to pronate, thereby achieving gait correction for those with insufficient foot pronation and correcting it to a normal gait. The second inclined guiding structure 602 includes a second foot-stabilizing inclined bottom. When the user walks, the second foot-stabilizing inclined bottom can be used to enhance the stability of the forefoot when landing, thereby enhancing the tendency to guide the forefoot to perform high gear push-off and correcting it to a normal gait.

[0039] For details regarding the construction of the first stable, tilted base, please refer to [link to relevant documentation]. Figure 7a The schematic diagram, for example, is a cross-sectional view along the tangent of the dotted line 691, viewed from the heel towards the forefoot. The first foot-stabilizing inclined bottom 78 mainly includes a first inclined bottom 781 and a second inclined bottom 782. The first inclined bottom 781 provides a stable contact surface when the heel lands on the ground 77 (to match the landing angle of those with insufficient pronation), while the second inclined bottom 782 is used to enhance and guide the user's foot to generate a tendency to pronate (clockwise rotation in this figure).

[0040] For details regarding the construction of the second stable, sloping base, please refer to [link / reference needed]. Figure 7b The schematic diagram, for example, is a cross-sectional view along the tangent of the dotted line 692, viewed from the inside of the shoe to the outside. The second foot-stabilizing inclined bottom 79 mainly includes a third inclined bottom 791 and a fourth inclined bottom 792. The third inclined bottom 791 provides a stable contact surface when the forefoot lands on the ground 77, and the fourth inclined bottom 792 is used to enhance the tendency of guiding the forefoot to high gear pushoff.

[0041] Figure 6b This shows a different Figure 6a Another embodiment shown, for example, provides a first inclined guide structure 601 and a second inclined guide structure 602 on the inner side of the hind foot portion 61 and the outer side of the forefoot portion 63 of the cushioning body 60, respectively, to receive... Figure 6aThe concept is as follows: the first inclined guiding structure 601 includes a first foot-stabilizing inclined base, and the second inclined guiding structure 602 includes a second foot-stabilizing inclined base. When the user walks, the first foot-stabilizing inclined base enhances the stability of the rear foot landing and induces a tendency for the user's foot to externally rotate, thereby correcting the gait of those with excessive internal pronation and restoring a normal gait. The second foot-stabilizing inclined base enhances the stability of the forefoot landing and induces a tendency for the forefoot to propel itself at a lower speed, thus correcting the gait to a normal gait.

[0042] Please see again Figure 8a , Figure 8b The content is a schematic diagram of another embodiment of the foot cushioning device provided by this utility model, wherein... Figure 8a This is a bottom view of the foot cushioning device, and Figure 8b From Figure 8a The rear view is shown in the direction of arrow 88. The foot cushioning device can be positioned between the user's foot (not shown in this figure) and the ground (not shown in this figure). In this example, the foot cushioning device includes at least a cushioning body 80 and a step guide structure 81, wherein the cushioning body 80 is located between the user's foot and the ground, and the user's foot contacts a contact surface 800 of the cushioning body 80. The cushioning body 80 has a rear foot portion 801, and the material of the rear foot portion 801 has a fourth resistance to compressive deformation. In this example, the cushioning body 80 is an insole structure, which can be made of foam materials, such as EVA (ethylene-vinyl acetate copolymer), PU (polyurethane), and memory foam (slow rebound foam).

[0043] The gait guidance structure 81 is disposed on the hind foot part 801, located between the buffer body 80 and the ground. The hardness range of the material of the gait guidance structure 81 is approximately between 40 and 70 in the Shore C hardness index. After multiple tests, the preferred hardness range is around 65 in the Shore C hardness index. Furthermore, the fifth compressive deformation resistance of the gait guidance structure material is greater than the fourth compressive deformation resistance. The gait guidance structure includes a first surface 811, a second surface 812, and a groove structure 813. A first side 8131 of the groove structure 813 is nearly parallel to the extension direction of the transverse arch of the user's foot when it is placed on the insole structure (parallelism is the best implementation, but rotation of ±30 degrees is within an acceptable range, that is, the angle between the two is less than or equal to 30°). A second side 8132 of the groove structure 813 is nearly parallel to the extension direction of the longitudinal arch of the user's foot (parallelism is the best implementation, but rotation of ±30 degrees is within an acceptable range, that is, the angle between the two is less than or equal to 30°). The depth of the groove structure 813 gradually decreases with the extension direction of the first side 8131. The depth of the groove structure located in the edge region of the cushioning body is greater than the depth of the groove structure located in the central region of the cushioning body. Furthermore, the thickness of the gait guidance structure 81 gradually decreases along the extension direction of the first side, forming a slope 810. This slope 810 results in a first thickness 8101 between the first and second surfaces on the inner side 814 of the hind foot being greater than a second thickness 8102 between the first and second surfaces on the outer side 815 of the hind foot. When the user walks, the slope 810 guides the user to initially be in a relatively twisted state after the hind foot fully contacts the ground, and then, due to the easily deformable groove structure, guides the hind foot to avoid excessive untwist, thereby achieving gait correction. Here, the twisted state of the foot refers to the natural state of the foot during the swing phase, while the untwist state refers to the stress state of the foot during the stance phase.

[0044] As for Figure 8c Then it is from Figure 8aCutting through line segment 89 and looking at the cross-section from the direction of arrow 88, it is clear that the depth of the groove structure 813 gradually decreases along the extension direction of the first side 8131, and the depth of the groove structure located in the edge region of the buffer body is greater than the depth of the groove structure located in the central region of the buffer body. In this example, the bottom surface 8130 of the groove structure 813 is a plane, so the cross-sectional line of its bottom surface 8130 is a straight line as seen in the figure, but this is not a limitation. In other designs, the bottom surface 8130 of the groove structure 813 can be a curved surface, as long as the depth of the groove structure 813 gradually decreases along the extension direction of the first side 8131, and the depth of the groove structure located in the edge region of the buffer body is greater than the depth of the groove structure located in the central region of the buffer body, so the cross-sectional line seen in the figure is a convex line or a concave line.

[0045] The above Figure 8a , Figure 8b , Figure 8c The explanations all use the right insole as an example; the explanation for the left insole is as follows. Figure 9a , Figure 9b , Figure 9c As shown, it is mainly a mirror image with the center of the body as the axis, and the details will not be repeated.

[0046] Furthermore, it is understood that the foregoing embodiments are merely illustrative examples of this utility model. Provided that the technical features do not conflict, are fixed and do not contradict each other, and do not violate the utility model's purpose, the technical solutions of each embodiment can be arbitrarily combined and used.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A foot cushioning device, characterized in that, For placement between a user's foot and the ground, the device includes at least: A cushioning body is located between the user's foot and the ground, the cushioning body having a rear foot portion, the material of the rear foot portion having a fourth resistance to compressive deformation; as well as A gait guidance structure is disposed on the hindfoot area, located between the cushioning body and the ground. The hardness of the gait guidance structure material is within the Shore C hardness index range of 40 to 70, and the fifth compressive deformation resistance of the gait guidance structure material is greater than the fourth compressive deformation resistance. The gait guidance structure includes a first surface, a second surface, and a groove structure. The angle between the first side of the groove structure and the extension direction of the transverse arch of the user's foot is less than 30°, and the angle between the second side of the groove structure and the extension direction of the longitudinal arch of the user's foot is less than 30°. The depth of the groove structure gradually decreases with the extension direction of the first side and is located within the cushioning body. The depth of the groove structure in the edge region is greater than the depth of the groove structure in the central region of the buffer body. The thickness of the gait guidance structure gradually decreases along the extension direction of the first side to form a slope. The slope makes the first thickness between the first surface and the second surface on the inner side of the hind foot greater than the second thickness between the first surface and the second surface on the outer side of the hind foot. When the user walks, the slope guides the user to be in a relatively twisted state after the hind foot fully touches the ground. Then, due to the easily deformable groove structure, the hind foot is guided to avoid an excessive untwisted state, thereby achieving gait correction.

2. The foot cushioning device according to claim 1, characterized in that, The cushioning body is an insole, which is placed inside the shoe, and the gait guidance structure is located between the shoe and the insole.

3. The foot cushioning device according to claim 2, characterized in that, The insole is made of foam material, which includes one of ethylene-vinyl acetate copolymer, polyurethane, and slow rebound sponge.

4. The foot cushioning device according to claim 1, characterized in that, The gait guidance structure has a Shore C hardness index of 65.

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