Insole customization method and elastic insole

Abstract

The invention discloses an insole customization method and an elastic insole, belongs to the field of shoes, and aims to solve the problem of how to improve the matching degree of the insole and a foot shape and the comprehensive performance of the insole. The insole customization method comprises the following steps: collecting two groups of data, wherein the data I is foot type data when a customized object stands; data 2: foot type data when the forefoot of the customized object touches the ground and the heel of the customized object is raised; and designing and manufacturing the insole according to the two groups of data. The elastic insole comprises an anti-skid layer, a cushioning rebound layer and a supporting layer. The anti-skid layer is made of an elastic material and is integrally connected with the cushioning and rebounding layer; the cushioning and rebounding layer is made of an elastic material, the thickness of the cushioning and rebounding layer is larger than that of the anti-skid layer, and the cushioning and rebounding layer forms the bottom of the elastic insole; the supporting layer is integrally connected to the interior of the cushioning and rebounding layer and located in the arch area of the elastic insole, and the hardness and toughness of the supporting layer are larger than those of the anti-skid layer and the cushioning and rebounding layer.

Description

Technical Field

[0001] The present application relates to the field of footwear, and in particular to a method for customizing insoles and an elastic insole. Background Art

[0002] In order to improve the degree of fit between the insole and the sole, it can be customized according to the individual's sole. To customize the insole, the sole morphology data of the customized object must be collected first, and then the insole should be designed according to the sole morphology. The collection of sole morphology data is mainly achieved by replicating the foot shape with soft mud, drawing the foot shape, or 3D scanning the foot shape. At present, the customization of insoles is usually achieved by collecting the morphological information of the state in which the sole and the support surface are fully fitted (such as the full standing state). This results in the customized insole being able to fit the sole when standing, but it cannot match the sole well when the customized object is walking, running, etc., under the forefoot load state, which affects the actual wearing comfort and functionality, especially during exercise. Another commonly used sole shaping method in clinical practice is to control the foot in the subtalar neutral state under no load, because different foot structures have large morphological differences in the subtalar neutral state, and when dynamically loaded, it will form greater uncertainty due to other internal and external forces. Therefore, this shaping method cannot guarantee that the relevant customized insole can ensure that the foot is in a natural state or a better shape under dynamic load.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The embodiments of the present application provide an insole customization method and an elastic insole, which can solve the problem of how to customize personal insoles in the prior art and improve the matching degree of the insole with the sole of the foot when the forefoot is loaded.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0008] In one aspect, a method for customizing an insole is provided, the method comprising the following steps:

[0009] Two sets of data were collected: Data 1: the foot shape data of the customized subject when standing; Data 2: the foot shape data of the customized subject when the forefoot was on the ground and the heel was raised;

[0010] The insole is designed and manufactured according to the two sets of data.

[0011] In some embodiments, when collecting the data one, both feet should be placed flat on a horizontal plane at the same height, both feet should be placed at a shoulder-width distance in a natural standing state, the center of the heel touching the ground should correspond to the alignment of the second metatarsal or the position of the second metatarsal joint, and the weight load on both feet should be consistent as much as possible; when collecting the data two, the height of the raised heel is set according to the foot shape of the customization object, and the foot shape data in the data two includes the heel foot shape data.

[0012] In some embodiments, the foot type includes a high-arched foot; when collecting the data 2 for a foot type with a high-arched foot, a 5, 10 or 15 mm heel pad is used for support according to the foot length of the customized object and the arch data of the data 1, and the center of the body is transferred to the scanned foot under the load-bearing state with the knee bent, thereby increasing the tension on the Achilles tendon and simultaneously increasing the downward pressure on the arch and the forefoot pushing force, and a foot scanner is used to scan the 3D foot type while keeping the forefoot support surface horizontal to the ground, the heel and Achilles tendon force lines consistent and perpendicular to the ground, and collecting foot type data for the entire palm including the heel; if the foot is in a heel eversion state, the calcaneus should be straightened first according to the degree of eversion and then the ankle muscles should be tightened to ensure that the heel is close to a vertical state; when performing a foot scan, ensure that the force lines of the knee and ankle joint are perpendicular to the ground.

[0013] In some embodiments, the foot type includes a normal arch; when collecting the data 2 for a foot type with a normal arch, a 15 or 20 mm heel pad is used for support according to the foot length of the customized object and the arch data of data 1, and the center of the body is transferred to the scanned foot in a weight-bearing state with the knee bent, thereby increasing the tension of the Achilles tendon and simultaneously improving the forefoot pushing force, and a foot scanner is used to scan the 3D foot type while keeping the forefoot support surface horizontal to the ground, the heel and Achilles tendon force lines consistent and perpendicular to the ground, and collect full palm including heel foot type data; if the foot is in a heel eversion state, the calcaneus should be straightened first according to the degree of eversion and then the ankle muscles should be tightened to ensure that the heel is close to a vertical state; when performing a foot scan, ensure that the force lines of the knee and ankle joint are perpendicular to the ground.

[0014] In some embodiments, the foot type includes low arch and flat foot; when collecting the data 2 for the foot type with low arch or flat foot, according to the foot length of the customized object and the arch data of data 1, a 20, 25 or 30 mm heel pad is used for support, and the body center is transferred to the scanned foot in the weight-bearing state with the knee bent, the tension of the Achilles tendon is increased and the arch muscles are tightened at the same time, the arch curvature is increased and the foot eversion state is reduced, and the 3D foot type is scanned using a foot scanner while keeping the forefoot support surface horizontal to the ground, the consistency of the heel and Achilles tendon force lines and maximizing verticality to the ground, and collecting foot type data for the entire palm including the heel; if the foot type is in a heel eversion state, the calcaneus should be straightened first according to the degree of eversion, and then the arch and ankle muscles should be tightened to ensure that the heel is close to a vertical state; when performing a foot scan, ensure that the force lines of the knee and ankle joint are perpendicular to the ground.

[0015] In some embodiments, the insole customization method further includes the following steps: if the foot has hallux valgus, the hallux is first straightened in a painless state before scanning the 3D foot shape with a foot shape scanner.

[0016] In some embodiments, designing and making insoles based on the two sets of data includes the following steps: importing the two sets of 3D foot shape data into a computer, performing foot structure and mechanical analysis and evaluation on the two sets of data through the computer, and designing the insole based on the analysis and evaluation results so that the insole adapts to the foot shape and functional requirements of the customized object.

[0017] On the other hand, an elastic insole is provided, which is made using the above-mentioned insole customization method, and the elastic insole includes: an anti-slip layer, a shock-absorbing and rebounding layer, and a supporting layer; the anti-slip layer uses an elastic material and is integrally connected to the shock-absorbing and rebounding layer, the anti-slip layer forms the pad surface of the elastic insole, and the upper and lower surfaces are both provided with anti-slip patterns, the anti-slip patterns are staggered and enclosed to form a plurality of air holes; the shock-absorbing and rebounding layer uses an elastic material and has a thickness greater than that of the anti-slip layer, and the shock-absorbing and rebounding layer forms the pad bottom of the elastic insole; the supporting layer is integrally connected to the inside of the shock-absorbing and rebounding layer and is located in the arch area of ​​the elastic insole, and the hardness and toughness of the supporting layer are greater than the hardness and toughness of the anti-slip layer and the shock-absorbing and rebounding layer.

[0018] In some embodiments, the shock-absorbing and rebounding layer is provided with a plurality of cubic structures, and the cubic structures are hollowed out.

[0019] In some embodiments, the support layer is provided with a first protrusion extending toward the sole area of ​​the elastic insole, and two second protrusions extending toward both sides of the heel area of ​​the elastic insole, respectively, and a concave portion for making way for the heel is provided between the second protrusions.

[0020] In some embodiments, the support layer is provided with a forefoot support portion extending from both sides of the midfoot toward the forefoot direction of the elastic insole, and the forefoot support portion continues to extend to the toes, or further extends to the front end of the insole.

[0021] In some embodiments, the two second protrusions of the support layer respectively extend toward both sides of the heel region of the elastic insole, continue to extend along the periphery of the heel, and form a closed loop at the heel.

[0022] In some embodiments, the elastic insole further includes an elastic protrusion, which has elastic deformation capability and protrudes from the surface of the elastic insole, and is used to support a concave area of ​​the sole of the foot.

[0023] (III) Beneficial effects

[0024] Compared with the prior art, the technical solution provided in the embodiment of the present application has at least the following beneficial effects:

[0025] The insole customization method of the present application collects two sets of data. Data one is the foot shape data of the customization object when standing; data two is the foot shape data of the customization object when the forefoot is on the ground and the heel is raised. Insoles are designed and manufactured based on the two sets of data. Compared with the existing insoles that are only made based on the morphological information of the sole in a fully standing state, the insoles made by the insole customization method of the present application can not only fit the sole of the foot when standing, but also better match the sole of the foot when the forefoot is loaded in walking, running, etc., thereby improving the wearing comfort.

[0026] The elastic insole of the present application shows multiple advantages when used. First, the anti-skid layer effectively enhances the anti-skid performance when worn by virtue of the anti-skid pattern, and improves the safety when walking or exercising. At the same time, these anti-skid patterns not only perform the anti-skid function, but also enclose the air permeability. This design greatly improves the air permeability of the insole while maintaining the necessary support of the anti-skid layer, making it more comfortable to wear and reducing the problem of dampness and odor on the feet. Secondly, the anti-skid layer and the shock-absorbing rebound layer are made of elastic materials, and the thickness of the shock-absorbing rebound layer is greater than the anti-skid layer. This feature enables the insole to provide rebound force during use, effectively alleviates the impact on the foot when walking or running, and improves the comfort of wearing and the efficiency of exercise. Furthermore, the support layer is cleverly placed inside the shock-absorbing rebound layer, using its own hardness and toughness characteristics to support the arch area and effectively disperse the pressure on the sole of the foot, thereby significantly improving the support performance of the insole and the stability of wearing, especially for people who stand or walk for a long time. This design is particularly important. Finally, the elastic insole of the present application maintains a high degree of simplicity in the overall structure, which not only reduces the difficulty and cost of production, but also makes the insole lighter and easier to carry, and is convenient for daily use and cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a schematic diagram of collecting rear heel lift and corresponding scan patterns when collecting ultra-high arches in an embodiment;

[0029] Figure 2 is a schematic diagram of collecting the heel lift and corresponding scan patterns when the foot has a normal high arch in the embodiment;

[0030] Figure 3 is a schematic diagram of the heel lift and the corresponding scan pattern when collecting the normal arch of the foot in the embodiment;

[0031] Figure 4 is a schematic diagram of collecting rear heel lift and corresponding scan patterns when a low arch is present in an embodiment;

[0032] Figure 5 is a schematic diagram of collecting heel lift and corresponding scan patterns when flat feet are present in an embodiment;

[0033] Figure 6 is a top view of the elastic insole in an embodiment of the present application;

[0034] Figure 7 is a schematic diagram of the internal structure of the elastic insole in an embodiment of the present application;

[0035] Figure 8 yes Figure 6 Sectional view of section A;

[0036] Fig. 9 yes Figure 6 Sectional view of section B;

[0037] Fig.10 yes Figure 6 Sectional view of section C;

[0038] Fig.11 yes Figure 6 Sectional view of section D;

[0039] Fig.12 is a schematic diagram of a first embodiment of a support layer in an embodiment of the present application;

[0040] Fig.13 is a schematic diagram of a second embodiment of a support layer in an embodiment of the present application;

[0041] Fig.14 is a schematic diagram of a third embodiment of a support layer in the embodiments of the present application;

[0042] Fig.15 is a schematic diagram of a first embodiment of an elastic protrusion in an embodiment of the present application;

[0043] Fig.16 It is a schematic diagram of a second embodiment of the elastic protrusion in the embodiment of the present application.

[0044] Figure numerals: anti-slip layer 1, shock-absorbing rebound layer 2, support layer 3, anti-slip pattern 11, air vents 12, cubic structure 20, first convex portion 31, second convex portion 32, concave portion 33, forefoot support portion 34, elastic convex portion 35.

[0045] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be understood that the references to "one implementation" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one implementation" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0049] A method for customizing an insole, comprising the following steps:

[0050] Two sets of data are collected: data one: the foot shape data of the customization object when standing; data two: the foot shape data of the customization object when the forefoot touches the ground and the heel is raised; the insoles are designed and made according to the two sets of data.

[0051] It is understandable that the foot shape data used for customizing the insole can select detailed measurement information of multiple aspects as needed to ensure that the insole can perfectly fit the user's foot shape and provide the best comfort and support. These foot shape data may include: length data, width data and height data. The length data includes one or more of the foot length, the length of the first metatarsophalangeal part, the length of the fifth metatarsophalangeal part, the length of the heel center, and the length from the heel center to the metatarsophalangeal part. The width data includes: at least one of the foot width (including oblique width and basic width), the metatarsophalangeal straight width, and the heel center straight width. The height data includes: one or more of the arch height, the height of the big toe, the height of the dorsum of the tarsus, and the height of the medial malleolus. In addition, other more detailed measurement data may be involved in the process of customizing the insole, such as circumference data, the height of the heel convex point, the height of the suprascaphoid bend point, the height of the foretarsal convex point, etc. These data help to further refine the design of the insole. In actual implementation, they can be selected and collected as needed to better adapt to the foot characteristics of different users.

[0052] The insole customization method of the above technical solution collects two sets of data. Data 1 is the foot shape data of the customization object when standing. When collecting the data 1, both feet should be placed flat on the horizontal plane at the same height. The feet should be placed at the shoulder width distance in the natural standing state. The center of the heel touching the ground should correspond to the alignment of the second metatarsal bone or the position of the second metatarsal joint, and the consistency of the weight of both feet should be ensured as much as possible. Data 2 is the foot shape data of the customization object when the forefoot touches the ground and the heel is raised. The insole is designed and made according to the two sets of data. When collecting the data 2, the height of the rear heel is set according to the foot shape of the customization object. The foot shape data in the data 2 includes the heel foot shape data. Compared with the existing insoles made only according to the morphological information of the sole in the full standing state, the insoles made by the insole customization method of the above technical solution can not only fit the sole when standing, but also better match the sole when the forefoot is loaded, such as walking and running, so as to improve the comfort of wearing.

[0053] In real life, the foot shapes of different customized objects are not the same. In order to solve the problem of how to improve the applicability of insoles to different foot shapes, in one implementation of the above-mentioned acquisition of data 2, when collecting data 2, the height of the rear heel elevation is set according to the foot shape of the customized object, and the foot shape data in data 2 includes heel foot shape data, such as the arc data of the heel. This implementation adjusts the height of the rear heel elevation according to the foot shape (especially the heel foot shape data), and significantly improves the accuracy of data collection and personalized adaptability when collecting data 2. Compared with the traditional fixed-height data collection method, the present invention can more effectively reduce the errors caused by foot shape differences and improve the accuracy of data collection. At the same time, this personalized setting can also significantly improve the user's wearing comfort and stability, and reduce the foot pressure and discomfort caused by inappropriate elevation height.

[0054] Exemplarily, the foot type includes high arch foot; when collecting data 2 for a foot type with an extra-high arch, a 5, 10 or 15 mm heel pad is used for support based on the foot length of the customized object and the arch data of data 1, and the center of the body is transferred to the scanned foot with the knee bent and weight-bearing, thereby increasing the tension on the Achilles tendon and simultaneously increasing the downward pressure on the arch and the forefoot pushing off the ground. A foot scanner is used to scan the 3D foot shape while keeping the forefoot support surface horizontal to the ground, the heel and Achilles tendon force lines consistent and perpendicular to the ground, and full-palm foot shape data including the heel are collected; if the foot is in a heel eversion state, the calcaneus should be straightened first according to the degree of eversion and then the ankle muscles should be tightened to ensure that the heel is close to a vertical state; when performing a foot scan, ensure that the force lines of the knee and ankle joint are perpendicular to the ground.

[0055] Further, high arch foot includes super high arch foot and normal arch foot, see Figure 1 As shown, Figure 1 It is a schematic diagram of the heel lifting and corresponding scanning graphics when collecting super-high arch in the embodiment. First, the lifted foot shape is taken, and the super-high arch is supported by a 5-10 mm (such as 5 mm) heel pad to increase the pushing force, that is, to increase the weight on the forefoot, thereby more accurately simulating the foot shape during walking or exercise; then the foot shape is scanned in 3D using a foot shape scanner to collect heel foot shape data; if the foot shape has heel valgus, the calcaneus should be straightened and the ankle muscles should be tightened according to the degree of valgus to ensure that the heel is close to a vertical state, thereby further improving the accuracy of data collection.

[0056] When collecting data 2 for a normal high arched foot, refer to Figure 2 As shown, Figure 2 It is a schematic diagram of the heel lifting and corresponding scanning graphics when collecting normal high arches in the embodiment. First, the foot lifting shape is taken. The normal high arch is supported by a 10-15 mm (such as 14.35 mm) heel pad to increase the weight and thus more accurately simulate the foot shape during walking or exercise; then the 3D foot shape is scanned using a foot shape scanner to collect the heel shape data; if the foot has heel valgus, the calcaneus should be corrected and the ankle muscles should be tightened according to the degree of valgus to ensure that the heel is close to a vertical state. For normal high arch feet with heel valgus, the calcaneus correction and ankle muscle tightening measures are also taken to ensure the consistency and accuracy of data collection.

[0057] Exemplarily, the foot shape includes a normal arch; when collecting data 2 with a normal arch, a 15 or 20 mm heel pad is used for support based on the foot length of the customized object and the arch data of data 1, and the center of the body is transferred to the scanned foot with the knee bent and weight-bearing, thereby increasing the tension of the Achilles tendon and simultaneously improving the forefoot pushing force. A foot scanner is used to scan the 3D foot shape while keeping the forefoot support surface horizontal to the ground, the heel and Achilles tendon force lines consistent and perpendicular to the ground, and full-palm foot shape data including the heel are collected; if the foot is in a heel eversion state, the calcaneus should be straightened first according to the degree of eversion and then the ankle muscles should be tightened to ensure that the heel is close to a vertical state; when performing a foot scan, ensure that the force lines of the knee and ankle joint are perpendicular to the ground.

[0058] Further, see Figure 3 As shown, Figure 3 It is a schematic diagram of the heel elevation and the corresponding scanning pattern when collecting the normal arch of the foot in the embodiment. The normal arch of the foot is supported by a 15-20 mm (such as 18.95 mm) heel pad, and the 3D foot shape is scanned with a foot shape scanner under normal weight to collect the heel foot shape data; if the foot has heel valgus, the calcaneus should be straightened and the ankle muscles should be tightened according to the degree of valgus to ensure that the heel is close to a vertical state.

[0059] Exemplarily, foot types include low arches and flat feet; when collecting data 2 for a foot type with a low arch, based on the foot length of the customized subject and the arch data of data 1, a 20, 25 or 30 mm heel pad is used for support, and the center of the body is transferred to the scanned foot with the knee bent under weight-bearing conditions to increase the tension on the Achilles tendon and tighten the arch muscles at the same time, thereby increasing the arch curvature and reducing the eversion of the foot. A foot scanner is used to scan the 3D foot shape while keeping the forefoot support surface level with the ground, the consistency of the heel and Achilles tendon force lines and maximizing verticality to the ground, and to collect foot shape data for the entire palm including the heel; if the foot is in a heel eversion state, the calcaneus should be straightened first according to the degree of eversion, and then the arch and ankle muscles should be tightened to ensure that the heel is close to a vertical state; when performing a foot scan, ensure that the force lines of the knee and ankle joint are perpendicular to the ground.

[0060] Further, see Figure 4 As shown, Figure 4 2 is a schematic diagram of collecting the heel lift and corresponding scanning graphics when collecting low arches in the embodiment. First, take the foot lift shape, the low arch is supported by a 20-25 mm (such as 22.92 mm) heel pad, with normal weight bearing and moderate tightening of the arch muscles, use a foot scanner to scan the 3D foot shape, and collect the heel foot shape data; if the foot has heel valgus, the calcaneus should be straightened according to the degree and the ankle muscles should be tightened to ensure that the heel is close to the vertical state; when collecting data 2 of the flat foot, refer to Figure 5 As shown, Figure 5It is a schematic diagram of collecting the heel elevation and corresponding scanning graphics when flat feet are collected in the embodiment. First, the foot is lifted, and the low arch is supported by a 25-30 mm heel pad. With normal weight bearing and moderate tightening of the arch muscles, a foot scanner is used to scan the 3D foot shape and collect the heel foot shape data; if the foot has heel valgus, the calcaneus should be straightened according to the degree and the ankle muscles should be tightened to ensure that the heel is close to a vertical state.

[0061] Understandably, the characteristics of the above five types of feet are as follows: Super high arch: The arch is abnormally high, and the middle of the sole is far from the ground, which may lead to uneven force on the sole of the foot and increase the risk of foot injury. This type of foot is relatively rare. High arch: The arch is higher, but compared with the super high arch, its height is higher than the normal range. People with high arches may feel uncomfortable due to uneven force on the sole of the foot. Normal arch: The curvature of the sole is moderate, neither too flat nor too curved. People with normal arches usually feel comfortable when walking and standing, and have fewer foot problems. Low arch has a smaller curvature of the sole, and the sole of the foot is almost completely in contact with the ground when standing. People with low arches may feel foot fatigue and pain after standing or walking for a long time. Flat arch: It is an extreme case of low arch. The arch almost disappears completely and the sole of the foot is completely in contact with the ground. People with flat arches may be more prone to foot fatigue, pain, and hallux valgus. The above data collection method makes the collected foot shape data more in line with actual usage, providing more accurate data support for customized shoes, thereby significantly improving the comfort, support and stability of the shoes.

[0062] In some embodiments, the insole customization method further includes the following steps: if the foot has hallux valgus, the hallux is first straightened in a painless state before scanning the 3D foot using a foot scanner. This step ensures the accuracy of the scan data and avoids measurement errors caused by hallux valgus, thereby customizing an insole that better fits the foot shape, effectively reducing the friction between the insole and the foot, improving the wearing comfort, and helping to relieve the pain or discomfort caused by hallux valgus.

[0063] The above method of designing and manufacturing the insole according to the two sets of data can use the existing technology.

[0064] In one embodiment of the above-mentioned design and production of insoles according to two sets of data, it includes the following steps: importing the two sets of 3D foot shape data into a computer, performing foot structure and mechanical analysis and evaluation on the two sets of data by the computer, and designing insoles according to the analysis and evaluation results, so that the insoles are adapted to the foot shape and functional requirements of the customized object. Compared with the traditional manual measurement and insole design method, the present invention uses a computer to perform accurate biomechanical analysis and evaluation on the two sets of foot shape data, which can more comprehensively understand the foot characteristics of the customized object, including parameters such as plantar pressure distribution, arch height, and foot width. Based on these accurate data, the present invention can design an insole that is more suitable for the foot shape of the customized object, effectively reducing the friction and discomfort between the insole and the foot. Specifically, through biomechanical analysis, the present invention can identify the foot problems that the customized object may have when walking or standing, such as arch collapse, plantar pain, etc., so as to make corresponding adjustments and optimizations when designing the insole. This personalized insole design not only improves the comfort of wearing, but also helps to relieve foot fatigue and prevent foot diseases. Promoting foot health: Long-term use of the insoles designed and manufactured according to the method of the present invention can gradually adjust and improve the foot posture of the customized object, reducing pain or injury caused by foot discomfort. In addition, the method also helps to improve the walking efficiency and stability of the customized object and reduce the occurrence of accidents such as falls.

[0065] In another embodiment of the above-mentioned method of designing and manufacturing insoles based on two sets of data, the steps are as follows: 1. Data preprocessing and analysis, (1) Data cleaning: Check the integrity and accuracy of the data to ensure that there is no missing or erroneous information; remove noise and outliers in the data to improve the accuracy of subsequent analysis. (2) Data comparison: Compare data 1 and data 2 to analyze the morphological changes of the foot in different states; identify the key differences between the foot when standing and when the forefoot lands, such as the height change of the arch of the foot, the force distribution of the forefoot and the heel, etc. 2. Personalized design of insoles, (1) Establish 3D model: Use existing professional design software to establish a 3D model of the foot based on data 1 and data 2; simulate the placement of the insole in the 3D model to ensure that the insole can perfectly fit the foot shape; (2) Design support and decompression areas: According to the forefoot landing state in data 2, design the front support area of ​​the insole to provide sufficient support; according to the standing state in data 1, adjust the arch support area of ​​the insole to ensure that the arch is properly supported and cushioned; design a shock-absorbing area at the back of the insole to relieve the impact of the heel landing. (3) Optimize the shape and size of the insole: According to the comparison results of data 1 and data 2, adjust the shape and size of the insole to ensure that the insole fits the foot; consider the comfort and breathability of the insole and optimize the material and thickness of the insole. 3. Insole production and testing, (1) Select materials: Select appropriate materials according to the design requirements of the insole. For example, a harder material can be selected for areas that require high support, while a softer material can be selected for areas that require cushioning. (2) Insole production: 3D printing technology is used to produce insoles based on the designed 3D model; the production accuracy and quality of the insoles are ensured to meet the needs of the customized objects. (3) Testing and adjustment: Let the customized objects try on the insoles to observe their comfort, support and stability; according to the feedback of the customized objects, the necessary adjustments and optimizations are made to the insoles.

[0066] Through the implementation of the above technical solutions, the insole customization method of the present application has the following beneficial effects: 1. Personalized adaptation: Everyone's foot shape, gait and weight distribution are different. Customized insoles can be designed and made according to individual foot shape, arch height, weight and other factors, so as to provide more fitting support and cushioning, and improve the comfort and stability of wearing. 2. Correcting gait problems: Customized insoles can be designed for specific gait problems, such as flat feet, high arches, inversion, etc. By adjusting the shape, thickness and material of the insole, gait problems can be effectively corrected to reduce discomfort and pain in the foot. 3. Relieve foot pain: For some people who stand, walk or perform high-intensity exercise for a long time, the feet may have pain, fatigue and other problems. Customized insoles can provide more precise support and cushioning, reduce the pressure on the feet, and relieve pain and fatigue. 4. Improve sports performance: For athletes, customized insoles can provide more fitting support and cushioning, reduce impact and injury during exercise, and improve sports performance. At the same time, customized insoles can also be designed and made according to the specific needs of athletes, such as increasing grip and improving stability. 5. Protect foot health: Customized insoles can be designed and produced according to the individual's foot health conditions, such as increasing breathability, antibacterial and anti-odor functions, thereby protecting foot health and reducing the occurrence of foot diseases.

[0067] It should be noted that the order of the steps of the insole customization method provided in the embodiment of the present invention can be appropriately adjusted, and the steps can be increased or decreased accordingly according to the circumstances. Any technician familiar with the technical field can easily think of the changed methods within the technical scope disclosed by the present invention, and they should be covered within the scope of protection of the present invention, so they will not be repeated here.

[0068] See also Figures 6 to 11 As shown, Figure 6 is a top view of the elastic insole in the embodiment of the present application, Figure 7 is a schematic diagram of the internal structure of the elastic insole in an embodiment of the present application, Figure 8 yes Figure 6 The cross-sectional view of section A in the figure. Fig. 9 yes Figure 6 The cross-sectional view of section B, Fig.10 yes Figure 6 The cross-sectional view of section C in the middle, Fig.11 yes Figure 6 Cross-sectional view of section D.

[0069] Insoles are in closer contact with our feet than soles, almost covering the entire sole of the foot, and also bear the mission of support, anti-skid, and shock absorption. At present, existing insoles are mainly made of multiple layers of materials, and have deficiencies in the comprehensive performance consisting of air permeability, elasticity, and anti-skid properties.

[0070] In order to solve the above technical problems, this embodiment provides an elastic insole, which is made by the above insole customization method, such as Figure 6 and Figure 7 As shown, the elastic insole includes: an anti-slip layer 1, a shock-absorbing and rebounding layer 2 and a supporting layer 3.

[0071] The anti-skid layer 1 is made of elastic material and is integrally connected with the shock-absorbing and rebounding layer 2. The anti-skid layer 1 forms the pad surface of the elastic insole. The upper and lower surfaces of the anti-skid layer 1 are provided with anti-skid patterns 11, which are staggered and enclose a number of air holes 12. Compared with the traditional anti-skid patterns 11 arranged along a straight line, the present invention is different from other insoles. The advantage is that both the upper and lower surfaces have anti-skid textures, which can play a good anti-skid role for the insole and the shoe, and the insole and the foot. At the same time, the anti-skid patterns 11 are staggered, which can not only form air holes 12, but also ensure a certain elasticity and support.

[0072] The shock-absorbing and rebounding layer 2 is made of elastic material and has a thickness greater than that of the anti-slip layer 1 . The shock-absorbing and rebounding layer 2 forms the base of the elastic insole and is mainly used for supporting and providing rebound force to achieve a shock-absorbing effect.

[0073] The support layer 3 is integrally connected to the interior of the shock-absorbing and rebounding layer 2 and is located in the arch area of ​​the elastic insole. The hardness and toughness of the support layer 3 are greater than those of the anti-slip layer 1 and the shock-absorbing and rebounding layer 2 .

[0074] It can be understood that through the application of the above-mentioned insole customization method, the elastic insole can achieve personalized adaptation by accurately measuring each person's foot shape, gait and weight distribution, providing support and cushioning for the customized object while significantly improving the comfort and stability of standing, walking and running.

[0075] When the elastic insole of the above technical solution is used, the anti-skid layer 1 achieves a good anti-skid effect through the anti-skid pattern 11; at the same time, the anti-skid pattern 11 encloses and forms the air vents 12, and the air vents 12 improve the ventilation effect; the anti-skid layer 1 and the shock-absorbing and rebounding layer 2 use elastic materials, and the thickness of the shock-absorbing and rebounding layer 2 is greater than the thickness of the anti-skid layer 1, which can provide a good rebound effect during use; the supporting layer 3 is located inside the shock-absorbing and rebounding layer 2, and can better support the arch area through its own hardness and toughness, thereby improving the supporting performance; equally important, the elastic insole has a simple overall structure and is easy to manufacture. It can be seen that the elastic insole of the above technical solution achieves the improvement of air permeability, elasticity and anti-skid performance, bringing users a more comfortable, safe and efficient wearing experience, and the comprehensive performance is significantly better than that of traditional insoles.

[0076] It is understandable that the thickness and shape of the anti-slip layer 1 and the shock-absorbing rebound layer 2 in various areas of the elastic insole can be adaptively adjusted according to the foot shape of the customization object to achieve a comfortable and safe use effect.

[0077] Exemplarily, the elastic material is TPU material. TPU material is thermoplastic polyurethane material, which is a thermoplastic elastomer with excellent performance. TPU has excellent elasticity and wear resistance, can withstand large deformation and recover quickly, and resists wear and cutting.

[0078] Furthermore, the hardness of the TPU material is 65A-75A, preferably TPU 70A material. The printed TPU currently used in the market generally uses 85A-95A materials, which are too hard, uncomfortable to wear on the feet, and have a poor experience. TPU 70A material is a TPU material with a hardness of 70A. It has moderate hardness, sufficient elasticity, and a certain degree of support, which can improve the comfort of the elastic insole.

[0079] Exemplarily, the shock-absorbing and rebounding layer 2 and the supporting layer 3 can be made of different elastic materials, including printed foam materials, nylon, carbon fiber and other composite materials.

[0080] In one embodiment of the above-mentioned anti-skid layer 1, the shock-absorbing and rebounding layer 2 and the supporting layer 3 being integrally connected, the anti-skid layer 1, the shock-absorbing and rebounding layer 2 and the supporting layer 3 are integrally printed and formed. Compared with the existing laminated insoles, the production is simpler and more efficient, and the durability of the elastic insoles can be improved.

[0081] In some embodiments, the support layer 3 uses PLA material. PLA material, i.e., polylactic acid material, is a biodegradable thermoplastic derived from renewable resources such as corn starch, sugar cane, and cassava roots. PLA has good physical properties, such as high transparency, moderate heat resistance, good mechanical strength, and good toughness.

[0082] In order to further improve the rebound and breathability effects, the shock-absorbing and rebounding layer 2 is provided with a plurality of cubic structures 20, and the cubic structures 20 are hollowed out. The cubic structures 20 can be convex parts integrally formed at the bottom of the shock-absorbing and rebounding layer 2, and the spacing between them allows them to have a larger elastic deformation space, thereby improving the rebound ability and, at the same time, improving the breathability of the bottom of the insole.

[0083] Exemplarily, a grid structure is formed between the anti-slip patterns 11, and the air-permeable holes 12 are grid holes. The grid holes can be triangular, square or other shapes.

[0084] To improve the support effect of support layer 3, refer to Figure 6 , Figure 12 to Figure 14 As shown, Fig.12 is a schematic diagram of a first embodiment of a support layer in an embodiment of the present application, Fig.13 is a schematic diagram of a second embodiment of a support layer in an embodiment of the present application, Fig.14: is a schematic diagram of the third embodiment of the support layer in the embodiment of the present application. The support layer 3 is provided with a first convex portion 31 extending in the direction of the sole area of ​​the elastic insole, and the first convex portion 31 is used to support the area between the arch and the sole of the foot. The support layer 3 is also provided with two second convex portions 32 extending in the directions of the two sides of the heel area of ​​the elastic insole, and the second convex portions 32 are used to support the two sides of the area between the heel and the arch of the foot. A concave portion 33 is provided between the second convex portions 32 to make way for the heel, so as to better fit the shape of the sole of the foot and improve the stability of the insole supporting the sole of the foot.

[0085] For example, the support layer 3 is provided with a forefoot support portion 34 extending from both sides of the midfoot to the forefoot direction of the elastic insole, and the forefoot support portion 34 continues to extend to the toes, or further extends to the front end of the insole. In this way, the elastic insole can support the area between the arch and the sole of the foot, and balance the force on the foot, thereby achieving a more stable support effect.

[0086] For example, Fig.12 and Fig.13 As shown, the two second protrusions 32 of the support layer 3 extending toward the sides of the heel area of ​​the elastic insole continue to extend along the periphery of the heel and form a closed loop at the heel. The closed loop can wrap around the bottom of the heel to achieve a stable support effect. Fig.14 As shown, the second convex portion 32 can also be openly arranged around the concave portion 33 to meet the usage requirements of special heels such as large heels.

[0087] In some embodiments, the elastic insole further includes an elastic protrusion 35, see Fig.15 and Fig.16 As shown, Fig.15 is a schematic diagram of a first embodiment of the elastic protrusion in the embodiment of the present application, Fig.16 It is a schematic diagram of the second embodiment of the elastic protrusion in the embodiment of the present application. The elastic protrusion 35 has elastic deformation ability and protrudes from the surface of the elastic insole, that is, it is located on the inner surface of the elastic insole. The elastic protrusion 35 is used to support the recessed area of ​​the sole. The specific position of the elastic protrusion 35 can be analyzed by first analyzing the foot model to identify the possible uneven force points of the foot with the arch height (high arch, low arch, normal). Based on the analysis results, specific elastic protrusions 35 can be added to the key parts of the insole (as shown in the figure) to provide support or cushioning. The height, shape and position of the elastic protrusion 35 are customized according to the individual foot shape. The personalized design of the elastic protrusion 35 can be further optimized through gait analysis data such as joint movement, plantar pressure distribution and other dynamic biomechanical data to achieve the purpose of improving exercise efficiency or improving physical discomfort.

[0088] For example, Fig.15 As shown, the elastic protrusion 35 is located in the connection area between the sole and the toes, and is in the shape of a crescent or scimitar that matches the connection area. Fig.16As shown, another elastic protrusion 35 may be provided on the inner side of the big toe to further enhance the cushioning and support effects of the forefoot and toe areas.

[0089] Exemplarily, the elastic protrusion 35 may also be disposed in the arch area, the heel area, or the area between the heel and the arch as required.

[0090] The elastic insole embodiment and the insole customization method embodiment provided in the embodiments of the present invention can be referenced to each other, and the embodiments of the present invention will not be described in detail here.

[0091] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for customizing insoles, characterized in that: The following steps are involved: Two sets of data were collected: Data 1: the foot shape data of the customized subject when standing; Data 2: the foot shape data of the customized subject when the forefoot was on the ground and the heel was raised; The insole is designed and manufactured according to the two sets of data.

2. The insole customization method according to claim 1, characterized in that: When collecting the data, both feet should be placed flat on a horizontal plane at the same height, with the feet at a shoulder-width distance in a natural standing state, the center of the heel contacting the ground should correspond to the alignment of the second metatarsal bone or the position of the second metatarsal joint, and the weight of both feet should be consistent as much as possible; When collecting the data 2, the height of the rear heel lift is set according to the foot shape of the customization object, and the foot shape data in the data 2 includes the heel foot shape data.

3. The insole customization method according to claim 2, characterized in that: The foot types include high arch foot, normal arch foot, low arch foot and flat foot; When collecting the data 2 of the foot type with high arch, according to the foot length of the customized object and the arch data of data 1, a 5, 10 or 15 mm heel pad is used for support, and the body center is transferred to the scanned foot under the weight-bearing state with the knee bent, so as to increase the tension of the Achilles tendon and at the same time increase the downward pressure on the arch and the forefoot pushing force. The foot type scanner is used to scan the 3D foot type while keeping the forefoot support surface horizontal to the ground, the heel and Achilles tendon force lines consistent and perpendicular to the ground, and the full palm including the heel foot type data is collected; if the foot type is in the heel eversion state, the calcaneus should be straightened first according to the degree of eversion and then the ankle muscles should be tightened to ensure that the heel is close to the vertical state; When performing a foot scan, make sure the force line between the knee and ankle joints is perpendicular to the ground; When collecting the data 2 of the foot type with a normal arch, according to the foot length of the customized object and the arch data of data 1, a 15 or 20 mm heel pad is used for support, and the body center is transferred to the scanned foot in the weight-bearing state with the knee bent, so as to increase the tension of the Achilles tendon and at the same time improve the forefoot pushing force. The 3D foot type is scanned with a foot scanner while keeping the forefoot support surface horizontal to the ground, the heel and Achilles tendon force lines consistent and perpendicular to the ground, and the full palm including the heel foot type data is collected; if the foot type is in the heel eversion state, the calcaneus should be straightened first according to the degree of eversion and then the ankle muscles should be tightened to ensure that the heel is close to the vertical state; When performing a foot scan, make sure the force line between the knee and ankle joints is perpendicular to the ground; When collecting the data 2 for low-arch or flat-footed feet, according to the foot length of the customized object and the arch data of data 1, a 20, 25 or 30 mm heel pad is used for support, and the body center is transferred to the scanned foot in the weight-bearing state with the knee bent, the tension of the Achilles tendon is increased and the arch muscles are tightened at the same time, the arch curvature is improved and the foot eversion state is reduced, and the 3D foot shape is scanned using a foot shape scanner while keeping the forefoot support surface horizontal to the ground, the consistency of the heel and Achilles tendon force lines and maximizing verticality to the ground, and the foot shape data of the whole palm including the heel is collected; if the foot shape is in the heel eversion state, the calcaneus should be straightened first according to the degree of eversion, and then the arch and ankle muscles should be tightened to ensure that the heel is close to the vertical state; When performing a foot scan, make sure the force line between the knee and ankle joints is perpendicular to the ground; The insole customization method further comprises the following steps: if the foot has hallux valgus, the hallux is first straightened in a painless state before scanning the 3D foot shape with a foot shape scanner.

4. The insole customization method according to claim 1, characterized in that: Designing and making insoles according to the two sets of data includes the following steps: The two sets of 3D foot shape data are imported into a computer, and the foot structure and mechanics are analyzed and evaluated by the computer. Insoles are designed according to the analysis and evaluation results to adapt the insoles to the foot shape and functional requirements of the customized object.

5. An elastic insole, characterized in that: Made by the insole customization method of claim 1, the elastic insole comprises: an anti-slip layer, a shock-absorbing and rebounding layer, and a supporting layer; The anti-skid layer is made of elastic material and is integrally connected with the shock-absorbing and rebounding layer. The anti-skid layer forms the pad surface of the elastic insole, and both the upper and lower surfaces are provided with anti-skid patterns, which are staggered and enclosed to form a plurality of air holes. The shock-absorbing and rebounding layer is made of elastic material and has a thickness greater than that of the anti-slip layer. The shock-absorbing and rebounding layer forms the bottom of the elastic insole. The support layer is integrally connected to the interior of the shock-absorbing and rebounding layer and is located in the arch area of ​​the elastic insole. The hardness and toughness of the support layer are greater than those of the anti-slip layer and the shock-absorbing and rebounding layer.

6. The elastic insole according to claim 5, characterized in that: The shock-absorbing and rebounding layer is provided with a plurality of cubic structures, and the cubic structures are hollowed out.

7. The elastic insole according to claim 5, characterized in that: The support layer is provided with a first convex portion extending toward the sole area of ​​the elastic insole, and two second convex portions extending toward both sides of the heel area of ​​the elastic insole respectively, and a concave portion for making way for the heel is provided between the second convex portions.

8. The elastic insole according to claim 7, characterized in that: The support layer is provided with forefoot support parts extending from both sides of the midfoot toward the forefoot direction of the elastic insole, and the forefoot support parts continue to extend to the toes, or further extend to the front end of the insole.

9. The elastic insole according to claim 7, characterized in that: The two second convex parts of the support layer respectively extend toward the two sides of the heel area of ​​the elastic insole, continue to extend along the periphery of the heel, and form a closed loop at the heel.

10. The elastic insole according to claim 7, characterized in that: The elastic insole also includes an elastic convex portion, which has elastic deformation capability and protrudes from the surface of the elastic insole. The elastic convex portion is used to support the concave area of ​​the sole of the foot.

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