Design method, system and device for integrated orthopedic lattice shoes

Abstract

The invention provides a design method, system and device of an integrated orthopedic lattice shoe, and relates to the technical field of lattice shoe design, and the method mainly comprises the following steps: collecting user data, and determining a plantar problem and a pressure adjustment area; on the basis of the height and weight information and the foot form information, performing whole shoe form and partition design to obtain a whole shoe partition map; based on the plantar stress information, obtaining a stress distribution cloud picture of the plantar; based on the foot shape information and the stress distribution cloud picture, midsole shape and partition design is carried out, and a midsole partition picture is obtained; on the basis of the insole partition map, lattice design of the insole is carried out in combination with lattice mechanical property analysis, and an insole lattice map is obtained; based on the whole shoe partition map and the midsole lattice map, surface lattice design is carried out in combination with lattice mechanical property analysis, and a surface lattice map is obtained; the midsole lattice pattern is combined with the surface lattice pattern. According to the scheme, the integrated orthopedic lattice shoe can be designed scientifically, reasonably and in a customized mode according to the foot shapes of different users.

Description

Technical Field

[0001] The present invention relates to the technical field of lattice shoe design, and in particular to a design method, system and device for integrated orthopedic lattice shoes. Background Art

[0002] Foot problems are common problems that affect human health, especially for teenagers whose arches are not yet fully formed. Uneven force on the feet can easily lead to deformities such as flat feet and high arches, which in turn can lead to chain reactions such as scoliosis, X / O legs, and abnormal gait, thus affecting the body shape and normal development of teenagers.

[0003] Flat feet, a common foot condition among adolescents, not only leads to motor dysfunction and muscle fatigue but can also cause long-term complications such as abnormal lower limb biomechanical alignment, severely impacting adolescents' quality of life and developmental potential. Clinical studies have shown that plantar support interventions can effectively restore biomechanical balance in adolescents before structural changes in the arch of the foot develop, offering significant preventative value for flat feet.

[0004] Among existing solutions, orthotic insoles, as the mainstream non-invasive corrective device, use dual-density materials to construct a support structure, effectively improving plantar pressure distribution. Among them, ICB orthotic insoles, which use ethylene-vinyl acetate composite materials and thermoplastic molding technology, have significant advantages in the field of personalized customization; however, they still have certain limitations: Problem 1: External insoles need to be added to existing shoes, which compresses the foot space and causes discomfort. Problem 2: The superposition of multiple levels of orthopedic modules will affect movement stability; Question 3: There is a lack of systematic biomechanical coordination between the independent corrective device and the shoe.

[0005] Therefore, how to develop an orthopedic lattice shoe that is integrated with the shoe and at the same time personalized has become a major issue that needs to be solved urgently in the industry. Summary of the Invention

[0006] The object of the present invention is to provide a design method, system and device for an integrated orthopedic lattice shoe to solve at least one of the above-mentioned technical problems in the prior art.

[0007] In a first aspect, to solve the above technical problems, the present invention provides a method for designing an integrated orthopedic lattice shoe, comprising the following steps: Step 1: Collect user data and determine plantar problems and pressure adjustment areas; the user data includes height and weight information, foot morphology information, and plantar stress information; the plantar problems include flat feet, etc.; Step 2: Based on the height, weight, and foot shape information, perform whole shoe shape and partition design to obtain a whole shoe partition diagram; the whole shoe partition diagram includes the midsole and the surface; the surface includes the toe cover, the heel cover, and the upper, etc.; Step 3: Based on the plantar stress information, a stress distribution cloud map of the plantar is obtained; then, based on the foot morphology information and the stress distribution cloud map, a midsole morphology and partition design is performed to obtain a midsole partition map; Step 4: Based on the midsole partition diagram and combined with the lattice mechanical performance analysis, the lattice design of the midsole is performed to obtain the midsole lattice diagram; Step 5: Based on the whole shoe partition diagram and the midsole lattice diagram, combined with the lattice mechanical performance analysis, the surface lattice design is performed to obtain the surface lattice diagram; the midsole lattice diagram and the surface lattice diagram are combined to form the overall diagram of the lattice shoe.

[0008] Through the above method, it is possible to design integrated orthopedic lattice shoes that meet personalized customization needs based on the characteristics of different users; and by utilizing the advantages of the lattice such as strong breathability, good cushioning performance, and easy 3D printing and manufacturing, the feet can be effectively, comfortably, and stably corrected.

[0009] In a feasible implementation manner, in step 1, the foot morphology information is collected by performing a three-dimensional scanning of the foot using a three-dimensional scanner, including a foot morphology model and foot dimensions; the foot dimensions include foot length, foot width, forefoot width, rearfoot width, midfoot height, toe height and rearfoot height.

[0010] In a feasible embodiment, in step 1, the plantar stress information includes: collecting the plantar pressure of both feet in the user's standing and walking postures through a plantar pressure detector, and converting the obtained stress distribution cloud map; based on the stress distribution cloud map, calculating the arch index information and the plantar pressure distribution ratio information.

[0011] In one feasible embodiment, the arch index information is defined as defining the forefoot, midfoot, and hindfoot in a top-view outline of the foot; calculating the proportion of the midfoot along the longitudinal length direction among the three to determine whether it is flat foot; the forefoot represents the metatarsal region, the midfoot represents the arch region, and the hindfoot represents the heel region; The specific calculation methods include: Step a1: In the top view of the foot, connect the heel vertex and the third metatarsal vertex (i.e., the base of the third toe) to obtain line J; draw a perpendicular line to the j line at the third metatarsal vertex to obtain a first dividing line; draw a perpendicular line to the j line at the widest junction between the arch and the forefoot to obtain a second dividing line; draw a perpendicular line to the j line at the widest junction between the arch and the heel to obtain a third dividing line; draw a perpendicular line to the j line at the heel vertex to obtain a fourth dividing line; define the area between the first and second dividing lines as the forefoot; define the area between the second and third dividing lines as the midfoot; define the area between the third and fourth dividing lines as the hindfoot; and define the remaining area as the toes. Step a2, measuring the lengths of the line segments intercepted by line j in the forefoot, midfoot, and hindfoot regions, respectively, as the forefoot length, midfoot length, and hindfoot length; Step a3: Calculate the arch index. The specific formula is: ; in, Indicates Arch Index; Indicates the length of the forefoot; Indicates mid-foot length; Indicates the length of the hind foot.

[0012] In a feasible implementation manner, the specific method for determining the foot problem includes: comparing the arch index with a preset normal arch range; if the arch index is greater than the upper limit of the normal arch range, it is determined to be flat feet.

[0013] In a feasible implementation manner, the specific method for calculating the plantar pressure distribution ratio information includes: Step b1: Based on the stress distribution cloud map, the pressure data of the forefoot, midfoot, hindfoot, and toe regions are summed to obtain the forefoot pressure, midfoot pressure, hindfoot pressure, and toe pressure. The specific formula includes: ; in, Indicates forefoot pressure; Indicates the first The pressure of the data points; ; in, Indicates midfoot pressure; Indicates the first The pressure of the data points; ; in, Indicates rear foot pressure; Indicates the first The pressure of the data points; ; in, Indicates toe pressure; Indicates the first The pressure of the data points; ; in, Indicates total pressure; Step b2: Calculate the pressure distribution ratio of each area; the specific formula includes: ; in, Indicates the proportion of forefoot pressure; ; in, Indicates the proportion of midfoot pressure; ; in, Represents the proportion of rear foot pressure; ; in, Indicates the proportion of toe pressure.

[0014] In a feasible embodiment, the method for determining the pressure adjustment zone includes: comparing the plantar pressure distribution ratio information with the upper limit of the corresponding preset normal ratio range; if there is an area greater than the upper limit of the preset normal ratio range, then the area is used as the pressure adjustment zone.

[0015] In a feasible embodiment, in step 2, the entire shoe is in the form of a running shoe, so as to meet the needs of teenagers who are in a campus environment for a long time and need to adapt to all-weather activities, such as walking, running, jumping and other complex movements.

[0016] In a feasible embodiment, in step 2, the surface also includes a heel drawstring, a secondary upper and a tongue; the secondary upper is arranged between the upper and the tongue, the toe shielding part and the midsole to assist in strengthening the upper structure.

[0017] In a feasible embodiment, in step 3, the midsole shape and zoning design method includes a flat foot improvement design method, specifically including: if the user has a flat foot problem, increasing the support height at the position corresponding to the arch area in the midsole zoning diagram so that the pressure is dispersed to other areas; The specific calculation formula is: ; in, Indicates the amount of pressure change in the midfoot; It represents the arch stiffness coefficient, which can be taken as 0.55 according to the conventional ergonomic three-dimensional model; Indicates foot length.

[0018] In a feasible implementation manner, in step 3, the midsole shape and partition design method further includes a midsole center of gravity adjustment method, specifically including: Step c1: Calculate the pressure difference between the pressure adjustment area and the non-pressure adjustment area. The specific formula is: ; in, Indicates the pressure difference, that is, the percentage of the total pressure change that needs to be transferred from the pressure-adjusted area to the non-pressure-adjusted area; Indicates the pressure change in the pressure adjustment area (e.g., rear foot) relative to the upper limit of the pressure ratio range of the non-pressure adjustment area; Indicates the pressure change in the non-pressure adjustment area (e.g., forefoot) relative to the lower limit of the pressure ratio range of the non-pressure adjustment area; Step c2: Calculate the foot tilt angle. The specific formula is: ; in, Indicates the foot tilt angle; Step c3: Calculate the height difference between the non-pressure adjustment area and the pressure adjustment area , the specific formula is: .

[0019] In a feasible embodiment, in step 3, the midsole zoning diagram can be divided into a zoning form, that is, divided into a support area and a cushioning area, and the two areas use unit cell types of different shapes; in this way, different shapes of unit cells can be used in different areas to reflect different mechanical properties, thereby achieving orthopedic support or normal cushioning function for different parts of the sole of the foot.

[0020] In a feasible embodiment, the midsole partition diagram can also be in an integral form, that is, without partitioning, and using the same unit cell type; in this way, the orthopedic support or normal shock-absorbing function can be adapted only by adjusting the density of the lattice.

[0021] In a feasible embodiment, in step 3, the midsole form and partition design method further includes a conditional discrimination algorithm for selecting a partition form or an overall form according to the discrimination conditions, specifically including: Step d1: Based on the foot morphology information and stress distribution cloud map, the support height is compared with the preset arch collapse threshold. If the support height is greater than the preset arch collapse threshold, it indicates that the arch collapse is severe and requires precise intervention, and step d2 is executed. If the support height is not greater than the preset arch collapse threshold, it indicates that the arch collapse is not severe and requires smooth transition and cushioning, and step d3 is executed. Step d2: Select the midsole in a partitioned form and end the discrimination algorithm; Step d3: Select the midsole in an integral form and end the discrimination algorithm.

[0022] In a feasible embodiment, the specific method of analyzing the lattice mechanical properties includes: Step e1: Import a stress distribution cloud map into conventional lattice parametric design software to reference parameters such as rod diameter for designing the lattice; Step e2: read the stress data of each data point in the stress distribution cloud map and import it into the lattice model; on the lattice model, associate the neighboring spherical areas of each point; Step e3: determining extreme value conditions of lattice parameters based on statistics of stress data; the statistics include: maximum stress value, minimum stress value, average stress value, and stress median; Step e4: designing lattice parameters according to the degree of stress concentration; the lattice parameters include: unit cell type, rod diameter, pore diameter, and volume fraction; The unit cell types include Simple cubic, Face centered cubic, Fluorite, Octet, Volume Mesh-Mesh edges, and Volume Mesh-Dual. Preferably, when the midsole partition diagram is in a partitioned form, the unit cell type for the support area is Octet; and the unit cell type for the cushioning area is Face-centered cubic. This is because, compared to other unit cell types, these two unit cell types have moderate rod diameters and moderate distances between rods and their opposite rods at the same volume fraction, which are more conducive to 3D printing and manufacturing, and reduce the risk of connecting rod collapse without adding support rods. At the same time, these two unit cell types are three-axis symmetrical structures. Regardless of the direction in which they are arranged, their rod endpoints must be connected. The continuity of the two unit cell types in multiple directions is also conducive to 3D printing. Among them, the Octet type is more stable than the Face-centered cubic type, and at the same volume fraction, the rod diameter is smaller, making it more suitable as a support. Preferably, when the midsole partition diagram is in an integral form, the unit cell type is selected as Volume Mesh-Mesh edges or Volume Mesh-Dual; this is because the lattice generated by the volume mesh is more random, and a lattice midsole with a gradual density change can be generated by changing the density of the mesh, which has better integrity.

[0023] The rod diameter refers to the diameter of the rods constituting the lattice structure; At locations with larger stress values, larger rod diameters and hole diameters are set; at locations with smaller stress values, smaller rod diameters and hole diameters are set. The pore size refers to the equivalent diameter of the interconnected holes between unit cells; The volume fraction refers to the percentage of space occupied by the solid material in the cubic structure. When the unit cell size is uniform, the volume fraction can be changed by adjusting the rod diameter. The specific calculation formula is: ; in, represents the volume fraction, which can be 0.25 (±0.005); Represents the solid volume of the cube after lattice formation; Represents the solid volume of the cube before crystallization.

[0024] In a feasible implementation, in step 3, based on the plantar stress information, a stress distribution cloud map can also be obtained through a finite element analysis method, specifically including: importing the midsole model into a finite element analysis tool; setting parameters such as Young's modulus (for example, 61 MPa), Poisson's ratio (for example, 0.45), density (for example, 1.15 g / cm3), and material (for example, TPU) in the finite element model; setting the pressure applied by the user on the top surface of the midsole model in a standing state (for example, -191.7 N); setting a fixed support constraint on the bottom surface of the midsole model; and calculating the corresponding stress distribution map, point cloud image, and stress distribution cloud map.

[0025] In a feasible implementation manner, in step 4, the lattice design method of the midsole includes a partitioned design method and an overall design method.

[0026] In a feasible implementation manner, the partition design method specifically includes: Step f1: Select Octet as the unit cell type and perform array filling in the support area; select Facecentered cubic as the unit cell type and perform array filling in the cushioning area; Step f2: Construct a calculation formula for the number of lattice subdivisions in the UVW direction of the midsole, specifically including: ; ; ; in, Indicates the number of U-direction subdivisions; Indicates the number of V-direction subdivisions; Indicates the number of subdivisions in the W direction; Indicates the width of the midsole; Indicates the midsole length; represents the unit cell width; represents the unit cell length; represents the unit cell height; Indicates the minimum height of the midsole (corresponding to the toe area); Indicates the maximum height of the midsole (corresponding to the rear palm area); Step f3: Based on a preset lattice side length (i.e., the side length of the lattice cube), the rod diameter is adjusted in the lattice model until a preset volume fraction range is satisfied, thereby determining the rod diameter range; Step f4: Preset wall thickness based on 3D printer (e.g., SLS printer) and lattice material (e.g., TPU) The value range is (for example, 1-10mm); in the UVW direction, when solving the lattice subdivision number in one direction of the midsole, set the lattice subdivision number in the other two directions to 1, and then use the formula in step e2 to solve the preliminary lattice subdivision number, including the rod diameter calculation formula: ; ; ; in, Indicates the rod diameter of the midsole lattice in the U direction; Indicates the rod diameter of the midsole lattice in the V direction; Indicates the rod diameter of the midsole lattice in the W direction; Step f5: Under the condition that there is at least one complete unit cell in the UVW direction (i.e. 、 and At least 1), find the direction of the minimum size of the midsole (i.e. direction), the maximum unit cell that can be set and the maximum rod diameter can be calculated , the specific expression is: ; Step f6, Substitute into In the calculation formula, reduce the number of subdivisions in the W direction; Then For reference, update and The value range is to ensure that the rod diameter in the UVW directions is relatively balanced and the deformation is small. The specific calculation formula includes: make: ; ; Then we have: ; ; in, Indicates updated ; Indicates updated ; Indicates updated ; Indicates updated ; Step f7: Setting a solid edge skin at the edge of the midsole to maintain edge integrity, prevent the rod end points from being exposed, and improve printability; A hollow skin is set at the edge of the support area, and the lattice of the hollow skin is consistent with the lattice of the support area to increase visibility; At the contact surface between the midsole and the foot, is significantly greater than W, so based on and The preset upper limit of the shaft diameter is calculated and selected through the shaft diameter calculation formula to improve foot comfort; On the bottom of the midsole, due to is significantly greater than W, so based on and The preset upper limit of the rod diameter is calculated and selected through the rod diameter calculation formula to avoid the entry of large particles, improve durability, increase the friction of the bottom surface and prevent slipping.

[0027] In a feasible implementation manner, the design method of the overall form includes: Generate a volume mesh model based on the point cloud image. In this volume mesh model, use unit cells of the Volume Mesh-Mesh Edges type (tetrahedral lattice generated by the volume mesh) to divide the mid-bottom solid. Calculate the unit cell width, unit cell length, and unit cell height from the maximum stress area to the minimum stress area according to the above formula. The midsole does not have an edge solid skin. This is because the lattice of the overall midsole is generated along the grid lines, so the lattice rods on the outer surface are continuous, which can minimize weight and increase ventilation space. At the contact surface between the midsole and the foot, is significantly greater than W, so based on and The preset upper limit of the shaft diameter is calculated and selected through the shaft diameter calculation formula to improve foot comfort; On the bottom of the midsole, due to is significantly greater than W, so based on and The preset upper limit of the rod diameter is calculated and selected through the rod diameter calculation formula to avoid the entry of large particles, improve durability, increase the friction of the bottom surface and prevent slipping.

[0028] In a feasible embodiment, in step 5, the surface lattice design includes: For the partitioned midsole, a Face-centered cubic type textured indentation entity is used to construct the toe and heel shields. This helps them correspond with the unit cells of the midsole, increase hardness, and prevent the intrusion of mud and sand. For the integral midsole, a Body-centered cubic type textured indentation entity is used to construct the toe and heel shields. This helps them correspond with the unit cells of the midsole, increase hardness, and prevent the intrusion of mud and sand. A solid surface is provided on the edge of the tongue to prevent the shoe opening from cracking after frequent wearing and taking off; The heel cover, toe cover and opening edge are provided with relatively dense hollowing to achieve the purpose of upper shaping and ventilation: for the partition form, Octet type hollowing is adopted; for the overall form, hexagonal hollowing is adopted; On the upper, there are relatively sparse hollowing to facilitate ventilation: for the partition form, the Face-centered cubic type of hollowing is adopted; for the overall form, the hexagonal hollowing is adopted; In this way, an integrated corrective lattice shoe can be obtained. Specifically, TPU can be used as the filling material, and the SLS technology in 3D printing can be used for integrated processing and molding. Due to the filling characteristics of the lattice itself, the lattice shoe not only does not require assembly and production, but also greatly reduces the workload of removing the support.

[0029] In the second aspect, based on the same inventive concept, the present application also provides an integrated orthopedic lattice shoe design system, including a data acquisition module, a data processing module and a result generation module; The data acquisition module is used to collect user data; the user data includes height and weight information, foot shape information and plantar stress information; The data processing module includes a pre-processing unit, a whole shoe shape and partition design unit, a midsole shape and partition design unit, and a lattice design unit; The pre-processing unit determines plantar problems and pressure adjustment areas based on user data; the plantar problems include flat feet, etc. The whole shoe shape and zone design unit performs whole shoe shape and zone design based on the height and weight information and the foot shape information to obtain a whole shoe zone diagram; the whole shoe zone diagram includes the midsole and the surface; the surface includes the toe cover, the heel cover, and the upper, etc.; The midsole shape and zoning design unit obtains a stress distribution cloud map of the sole of the foot based on the sole stress information; and then performs midsole shape and zoning design based on the foot shape information and the stress distribution cloud map to obtain a midsole zoning map; The lattice design unit performs lattice design of the midsole based on the midsole partition diagram and in combination with lattice mechanical performance analysis to obtain a midsole lattice diagram; performs surface lattice design based on the entire shoe partition diagram and the midsole lattice diagram and in combination with lattice mechanical performance analysis to obtain a surface lattice diagram; and combines the midsole lattice diagram with the surface lattice diagram to form an overall diagram of the lattice shoe; The result generating module is used to send out the overall image of the lattice shoe.

[0030] On the third aspect, based on the same inventive concept, the present application also provides an integrated orthopedic lattice shoe design device, including a processor, a memory and a bus, wherein the memory stores instructions and data read by the processor, and the processor is used to call the instructions and data in the memory to execute the design method as described above, and the bus connects the functional components for transmitting information.

[0031] In a feasible embodiment, the design device further includes a three-dimensional scanner for performing a three-dimensional scan of the foot to collect foot morphological information.

[0032] In a feasible embodiment, the design device further includes a plantar pressure detector for collecting plantar pressure of both feet when the user is standing and walking, and converting the obtained pressure into a stress distribution cloud map.

[0033] By adopting the above technical solution, the present invention has the following beneficial effects: The present invention provides a design method, system and device for integrated orthopedic lattice shoes, which can scientifically, reasonably and customized design integrated orthopedic lattice shoes according to the foot morphology of different users; this solution provides precise support force on the inner side of the arch of the foot through the lattice structure, which can lift the collapsed arch of the foot, and correct the alignment of the calf and knee joint upward by stabilizing the foot base, thereby reducing or preventing the development of abnormal leg shape caused by flat feet; this solution reduces the impact and pressure of the heel through the height difference between the forefoot and the rearfoot, promotes the forward shift of the center of gravity, forms a more effective push-off action, thereby adjusting gait abnormalities and reducing the impact force transmitted to the spine; this solution reduces the fatigue and injury risk of the foot and spine by arranging a cushioning area and a support area in the midsole and using unit cell types of different hardness respectively; this solution integrates the sole and the orthopedic insole into one, and the overall structure is stable and reliable, and is easy to produce and manufacture and for users to put on and take off. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A flow chart of a design method for an integrated orthopedic lattice shoe provided by an embodiment of the present invention; Figure 2 A schematic diagram of the right foot size of a male adolescent user provided in an embodiment of the present invention; Figure 3 A schematic diagram of a top view of a right foot provided in an embodiment of the present invention; Figure 4 A cloud diagram showing the plantar pressure distribution of the right foot of a male adolescent user according to an embodiment of the present invention; Figure 5 A schematic diagram of the entire shoe structure provided by an embodiment of the present invention; Figure 6 The midsole partition diagram provided in the embodiment of the present invention is a structural schematic diagram of a partition form; Figure 7 A comparison diagram of unit cell types provided in an embodiment of the present invention; Figure 8 Schematic diagram of the connection between Face centered cubic and Octet provided in an embodiment of the present invention; Figure 9 Schematic diagram of finite element analysis provided by an embodiment of the present invention; wherein, Figure a is a finite element model diagram; Figure b is a stress distribution diagram; Figure c is a point cloud image; Figure d is a stress distribution cloud diagram; Figure 10 An illustration of how to calculate the maximum rod diameter provided by an embodiment of the present invention; Figure 11 A schematic diagram of a UVW-direction subdivision grid provided by an embodiment of the present invention; Figure 12 An overall schematic diagram of a partitioned midsole provided by an embodiment of the present invention; Figure 13 A schematic diagram of the bottom of a midsole in a partitioned form provided by an embodiment of the present invention; Figure 14 A schematic diagram of the overall midsole design process provided by an embodiment of the present invention; Figure 15 A schematic diagram of an overall midsole in an integrated form provided by an embodiment of the present invention; Figure 16 A schematic diagram of the bottom of the midsole in an integral form provided by an embodiment of the present invention; Figure 17 This is a schematic diagram of the overall lattice shoe provided by an embodiment of the present invention; Figure a is a partitioned midsole; Figure b is an integral midsole. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] The present invention will be further explained below with reference to specific embodiments.

[0040] It should also be noted that the following specific embodiments or specific implementations are a series of optimized settings listed in the present invention to further explain the specific content of the invention, and these settings can be combined or used in association with each other.

[0041] Example 1: like Figure 1 As shown, the present embodiment provides a method for designing an integrated orthopedic lattice shoe, comprising the following steps: Step 1: Collect user data and determine plantar problems and pressure adjustment areas; the user data includes height and weight information, foot morphology information, and plantar stress information; the plantar problems include flat feet, etc.; Step 2: Based on the height, weight, and foot shape information, perform whole shoe shape and partition design to obtain a whole shoe partition diagram; the whole shoe partition diagram includes the midsole and the surface; the surface includes the toe cover, the heel cover, and the upper, etc.; Step 3: Based on the plantar stress information, a stress distribution cloud map of the plantar is obtained; then, based on the foot morphology information and the stress distribution cloud map, a midsole morphology and partition design is performed to obtain a midsole partition map; Step 4: Based on the midsole partition diagram and combined with the lattice mechanical performance analysis, the lattice design of the midsole is performed to obtain the midsole lattice diagram; Step 5: Based on the whole shoe partition diagram and the midsole lattice diagram, combined with the lattice mechanical performance analysis, the surface lattice design is performed to obtain the surface lattice diagram; the midsole lattice diagram and the surface lattice diagram are combined to form the overall diagram of the lattice shoe.

[0042] Through the above method, it is possible to design integrated orthopedic lattice shoes that meet personalized customization needs based on the characteristics of different users; and by utilizing the advantages of the lattice such as strong breathability, good cushioning performance, and easy 3D printing and manufacturing, the feet can be effectively, comfortably, and stably corrected.

[0043] Furthermore, in step 1, the foot morphology information is collected by performing a three-dimensional scan of the foot using a three-dimensional scanner, including a foot morphology model and foot dimensions; the foot dimensions include foot length, foot width, forefoot width, rearfoot width, midfoot height, toe height, and rearfoot height; For example, Figure 2 As shown in FIG, a male adolescent user (age: 10 years old; height: 1.42 meters; weight: 38.5 kilograms) was subjected to a three-dimensional scan to obtain a foot morphology model, and the foot length was measured to be 225 mm, the foot width was 90 mm, the forefoot width was 95 mm, the rear foot width was 70 mm, and the midfoot height was 30 mm.

[0044] Furthermore, in step 1, the plantar stress information includes: collecting the plantar pressure of both feet in the user's standing and walking postures through a plantar pressure detector, and converting the obtained stress distribution cloud map; based on the stress distribution cloud map, calculating the arch index information and the plantar pressure distribution ratio information.

[0045] Furthermore, the arch index information refers to defining the forefoot, midfoot, and hindfoot in a top-view outline of the foot; calculating the proportion of the midfoot along the longitudinal length direction among the three to determine whether it is flat foot; the forefoot represents the metatarsal area, the midfoot represents the arch area, and the hindfoot represents the heel area; The specific calculation methods include: Step a1: Figure 3 As shown, in the top view of the foot, connect the heel vertex and the third metatarsal vertex (i.e., the root of the third toe) to obtain the j line; draw a perpendicular line to the j line at the vertex of the third metatarsal to obtain the first dividing line; draw a perpendicular line to the j line at the widest junction between the arch and the forefoot to obtain the second dividing line; draw a perpendicular line to the j line at the widest junction between the arch and the heel to obtain the third dividing line; draw a perpendicular line to the j line at the vertex of the heel to obtain the fourth dividing line; the area between the first dividing line and the second dividing line is regarded as the forefoot; the area between the second dividing line and the third dividing line is regarded as the midfoot; the area between the third dividing line and the fourth dividing line is regarded as the hindfoot; and the remaining area is regarded as the toes; Step a2, measuring the lengths of the line segments intercepted by line j in the forefoot, midfoot, and hindfoot regions, respectively, as the forefoot length, midfoot length, and hindfoot length; Step a3: Calculate the arch index. The specific formula is: ; in, Indicates Arch Index; Indicates the length of the forefoot; Indicates mid-foot length; Indicates the length of the hind foot.

[0046] Furthermore, the specific method for determining foot problems includes: comparing the arch index with a preset normal arch range; if the arch index is greater than the upper limit of the normal arch range, determining that the foot is flat; For example, after measuring the right foot of the male teenager user, Equal to 99.01 mm, Equal to 53.79 mm, When it is equal to 36.20 mm, The calculation results are as follows: ; The preset normal arch range of the arch index is 20~26%; Therefore, the arch index of the male adolescent user is greater than the upper limit of the preset normal arch range, and the male adolescent user's right foot is determined to have flat feet; Similarly, the calculated arch index of the left foot is 28.35%, so the male adolescent user also has flat feet on his left foot.

[0047] Furthermore, the specific calculation method of the plantar pressure distribution ratio information includes: Step b1: Based on the stress distribution cloud map, the pressure data of the forefoot, midfoot, hindfoot, and toe regions are summed to obtain the forefoot pressure, midfoot pressure, hindfoot pressure, and toe pressure. The specific formula includes: ; in, Indicates forefoot pressure; Indicates the first The pressure of the data points; ; in, Indicates midfoot pressure; Indicates the first The pressure of the data points; ; in, Indicates rear foot pressure; Indicates the first The pressure of the data points; ; in, Indicates toe pressure; Indicates the first The pressure of the data points; ; in, Indicates total pressure; Step b2: Calculate the pressure distribution ratio of each area; the specific formula includes: ; ; ; ; in, Indicates the proportion of forefoot pressure; Indicates the proportion of midfoot pressure; Represents the proportion of rear foot pressure; Indicates the proportion of toe pressure.

[0048] Furthermore, the method for determining the pressure adjustment zone includes: comparing the plantar pressure distribution ratio information with the upper limit of the corresponding preset normal ratio range; if there is an area with a ratio greater than the upper limit of the preset normal ratio range, then the area is regarded as the pressure adjustment zone; For example, it is calculated that for this male adolescent user: the pressure of the left toe accounts for 5.12%, the pressure of the left forefoot accounts for 29.31%, the pressure of the left midfoot accounts for 20.46%, the pressure of the left hindfoot accounts for 45.11%, the pressure of the right toe accounts for 6.02%, the pressure of the right forefoot accounts for 30.98%, the pressure of the right midfoot accounts for 22.65% and the pressure of the right hindfoot accounts for 40.35%. Figure 4 As shown; The preset normal proportion range is: forefoot pressure proportion range is 35~45%; midfoot pressure proportion range is 10~25%; rearfoot pressure proportion range should be 30~40%; toe pressure proportion range is 8~15%; By comparison, it was found that the hind feet of the male adolescent user were subjected to greater force, so the hind feet were used as the pressure adjustment area.

[0049] Furthermore, in step 2, the entire shoe is in the form of a running shoe, so as to meet the needs of teenagers who are in a campus environment for a long time and need to adapt to all-weather activities, such as walking, running, jumping and other complex movements.

[0050] Furthermore, if Figure 5 As shown, in step 2, the surface also includes a heel drawstring, a secondary upper and a tongue; the secondary upper is arranged between the upper and the tongue, the toe shielding part and the midsole to assist in strengthening the upper structure.

[0051] Furthermore, in step 3, the midsole shape and zoning design method includes a flat foot improvement design method, specifically including: if the user has a flat foot problem, increasing the support height at the position corresponding to the arch area in the midsole zoning diagram so that the pressure is dispersed to other areas; The specific calculation formula is: ; in, Indicates the amount of pressure change in the midfoot; It represents the arch stiffness coefficient, which can be taken as 0.55 according to the conventional ergonomic three-dimensional model; Indicates foot length; For example, the male teenage user, calculates We can get: ; That is, the lattice shoe increases the support height by 22.83 mm at the position corresponding to the arch area in the midsole partition diagram, thereby achieving the purpose of intervening in the shape of the foot, increasing the arch pressure, and reducing the degree of flat feet.

[0052] Furthermore, in step 3, the midsole shape and partition design method also includes a midsole center of gravity adjustment method, specifically including: Step c1: Calculate the pressure difference between the pressure adjustment area and the non-pressure adjustment area. The specific formula is: ; in, Indicates the pressure difference, that is, the percentage of the total pressure change that needs to be transferred from the pressure-adjusted area to the non-pressure-adjusted area; Indicates the pressure change in the pressure adjustment area (e.g., rear foot) relative to the upper limit of the pressure ratio range of the non-pressure adjustment area; Indicates the pressure change in the non-pressure adjustment area (e.g., forefoot) relative to the lower limit of the pressure ratio range of the non-pressure adjustment area; For example, for this male adolescent user, the upper limit of the forefoot pressure ratio range is reduced by 0.1% by the safety margin to obtain 44.9%, and the lower limit of the forefoot pressure ratio range is increased by 0.1% by the safety margin to obtain 35.1%. and The critical values ​​are as follows: ; ; Then, we can get: ; Step c2: Calculate the foot tilt angle. The specific formula is: ; in, Indicates the foot tilt angle; For example, the foot tilt angle calculated for this male teenager is: ; Step c3: Calculate the height difference between the non-pressure adjustment area and the pressure adjustment area , the specific formula is: ; For example, this male teenage user calculates for: ; That is, the pressure adjustment area of ​​the lattice shoe midsole is 24.3 mm higher than the non-pressure adjustment area. In this way, by raising the rear foot height by 24.3 mm, the ankle joint is forced to slightly plantar flex (toes down), pushing the center of gravity of the human body forward; or by lowering the forefoot height by 24.3 mm, the height difference between the forefoot and the ground is reduced, avoiding excessive pressure on the forefoot due to the raised heel.

[0053] Furthermore, in step 3, the midsole partition diagram can be divided into a partitioning form, that is, divided into a support area and a cushioning area, and the two areas use unit cell types of different shapes, such as Figure 6 As shown; in this way, different shapes of cells can be used in different areas to reflect different mechanical properties, thereby achieving corrective support or normal shock absorption function for different parts of the sole of the foot.

[0054] Furthermore, the midsole partition pattern may also be in an integral form, that is, without partitioning, and using the same unit cell type; in this way, orthopedic support or normal shock-absorbing function can be adapted only by adjusting the density of the lattice.

[0055] Furthermore, in step 3, the midsole form and partition design method also includes a conditional discrimination algorithm for selecting the partition form or the overall form according to the discrimination conditions, specifically including: Step d1: Based on the foot morphology information and stress distribution cloud map, the support height is compared with the preset arch collapse threshold. If the support height is greater than the preset arch collapse threshold, it indicates that the arch collapse is severe and requires precise intervention, and step d2 is executed. If the support height is not greater than the preset arch collapse threshold, it indicates that the arch collapse is not severe and requires smooth transition and cushioning, and step d3 is executed. Step d2: Select the midsole in the partitioned form and end the discrimination algorithm; Step d3: Select the midsole in an integral form and end the discrimination algorithm.

[0056] Furthermore, the specific method of analyzing the lattice mechanical properties includes: Step e1: Import a stress distribution cloud map (e.g., CSV cloud map data) into conventional lattice parametric design software to reference parameters such as rod diameters for designing the lattice; Step e2: Read the stress data for each data point in the stress distribution cloud map and import it into the lattice model. On the lattice model, associate the nearest spherical region of each point. For example, if the coordinates of point A are (0,0,0) and the coordinates of the nearest point B are (10,10,10), then calculate the stress data affected by point A within the nearest spherical region with a radius of 1 / 2 the distance between A and B (5mm). The same applies to point B. Step e3: determining extreme value conditions of lattice parameters based on statistics of stress data; the statistics include: maximum stress value, minimum stress value, average stress value, and stress median; For example, in the stress distribution cloud map, the maximum stress value is 25180Pa, the minimum stress value is 469Pa, the average stress value is 15992Pa, and the median stress value is 15290Pa; If the influence range of artificially set stress is 0-20000Pa, the lattice parameters reach extreme values ​​when the stress value is greater than or equal to 20000Pa and equal to 0Pa; Step e4: designing lattice parameters according to the degree of stress concentration; the lattice parameters include: unit cell type, rod diameter, pore diameter, and volume fraction; The unit cell types include Simple cubic, Face centered cubic, Fluorite, Octet, Volume Mesh-Mesh edges, and Volume Mesh-Dual. See Table 1 for detailed descriptions of each unit cell type and commonly used rod diameters.

[0057] For detailed illustrations of each unit cell type, see Figure 7 ; Preferably, when the midsole partition diagram is in the partition form, the unit cell type of the support area is selected as Octet; the unit cell type of the cushioning area is selected as Face centered cubic; this is because these two unit cell types, compared with other unit cell types, have moderate rod diameters and moderate distances between the rods and their opposite rods at the same volume fraction, which is more conducive to 3D printing manufacturing and reduces the risk of connecting rod collapse without adding support rods; at the same time, these two unit cell types are 3-axis symmetrical structures, and their rod endpoints must be connected no matter in which direction they are arranged. The continuity of the two unit cell types in multiple directions is also conducive to 3D printing manufacturing, such as Figure 8 As shown in the figure, the stability of the Octet type is stronger than that of the Face-centered cubic type. With the same volume fraction, the rod diameter is smaller and it is more suitable as a support. Preferably, when the midsole partition diagram is in an integral form, the unit cell type is selected as Volume Mesh-Mesh edges or Volume Mesh-Dual; this is because the lattice generated by the volume mesh is more random, and a lattice midsole with a gradual density change can be generated by changing the density of the mesh, which has better integrity.

[0058] The rod diameter refers to the diameter of the rods constituting the lattice structure; At locations with larger stress values, larger rod diameters and hole diameters are set; at locations with smaller stress values, smaller rod diameters and hole diameters are set. For example, if the maximum rod diameter is set to 2 mm and the minimum rod diameter is set to 0.4 mm: At locations with concentrated stress (higher stress values), the rod diameter is set to 0.4 mm, thereby reducing the hardness and achieving the effect of dispersing stress; at locations with lower stress, the rod diameter is set to 2 mm, thereby increasing the hardness and achieving the effect of supporting the overall structure; The pore size refers to the equivalent diameter of the interconnected holes between unit cells; For example, the maximum aperture of the lattice is set to 5 mm and the minimum aperture is set to 1 mm: At locations where stress is concentrated, the aperture is close to 5 mm to reduce the lattice density; at locations where stress is lower, the aperture is close to 1 mm.

[0059] The volume fraction refers to the percentage of space occupied by the solid material in the cubic structure. When the unit cell size is uniform, the volume fraction can be changed by adjusting the rod diameter. The specific calculation formula is: ; in, represents the volume fraction, which can be 0.25 (±0.005); Represents the solid volume of the cube after lattice formation; Represents the solid volume of the cube before crystallization.

[0060] Furthermore, in step 3, based on the plantar stress information, a stress distribution cloud map can be obtained by finite element analysis method, such as Figure 9 As shown, the method specifically includes: importing the midsole model into a conventional finite element analysis tool; setting parameters such as Young's modulus (e.g., 61 MPa), Poisson's ratio (e.g., 0.45), density (e.g., 1.15 g / cm3), and material (e.g., TPU) in the finite element model, as shown in FIG. Figure 9 As shown in Figure a; set the pressure on the top surface of the midsole model when the user is standing (for example, -191.7 N); set the fixed support constraint on the bottom surface of the midsole model; calculate the corresponding stress distribution diagram (as shown in Figure a); ... Figure 9 As shown in Figure b), point cloud image (as shown in Figure 9 c in Figure ) and stress distribution cloud diagram (as shown in Figure Figure 9 d in the figure).

[0061] Furthermore, in step 4, the lattice design method of the midsole includes a partitioned design method and an overall design method.

[0062] Furthermore, the design method of the partition form specifically includes: Step f1: Select Octet as the unit cell type and perform array filling in the support area; select Facecentered cubic as the unit cell type and perform array filling in the cushioning area; Step f2: Construct a calculation formula for the number of lattice subdivisions in the UVW direction of the midsole, specifically including: ; ; ; in, Indicates the number of U-direction subdivisions; Indicates the number of V-direction subdivisions; Indicates the number of subdivisions in the W direction; Indicates the width of the midsole; Indicates the midsole length; represents the unit cell width; represents the unit cell length; represents the unit cell height; Indicates the minimum height of the midsole (corresponding to the toe area); Indicates the maximum height of the midsole (corresponding to the rear palm area); For example, if the midsole width is set to 102 mm (the width of the male adolescent's foot plus a reserve amount to accommodate foot growth), the midsole length is set to 255 mm (including the male adolescent's foot length and a reserve amount to accommodate comfort, foot growth, etc.), the minimum midsole height is 10 mm, and the maximum midsole height is 34 mm, then: ; ; ; Step f3: Based on a preset lattice side length (i.e., the side length of the lattice cube), the rod diameter is adjusted in the lattice model until a preset volume fraction range is satisfied, thereby determining the rod diameter range; For example, the lattice side lengths of the Octet type and the Face centered cubic type If the value is set to 1 and the volume fraction range is set to 0.2~0.4, the rod diameters of the two lattices can be directly measured in the lattice model. The value range is 0.19~0.29mm; Step f4: Preset wall thickness based on 3D printer (e.g., SLS printer) and lattice material (e.g., TPU) The value range of (for example, 1-10mm, which can also be regarded as the value range of the rod diameter); in the UVW direction, when solving the lattice subdivision number in one direction of the midsole, set the lattice subdivision number in the other two directions to 1, and then use the formula in step e2 to solve the preliminary lattice subdivision number, including the rod diameter calculation formula: ; ; ; in, Indicates the rod diameter of the midsole lattice in the U direction; Indicates the rod diameter of the midsole lattice in the V direction; Indicates the rod diameter of the midsole lattice in the W direction; For example, 、 、 as well as =0.19~0.29, substituting into the above formula, we can get: ; ; ; Then we have: ; ; ; Step f5: Under the condition that there is at least one complete unit cell in the UVW direction (i.e. 、 and At least 1), find the direction of the minimum size of the midsole (i.e. direction), the maximum unit cell that can be set and the maximum rod diameter can be calculated , the specific expression is: ; For example, the maximum unit cell side length that can be set in the midsole is the minimum size position in the W direction, that is, At the same time, if there are no holes, the lattice rods will fit together and no hollow effect can be formed. Therefore, the distance between the opposite sides of the lattice rods should be at least 2 times the length of the lattice side ( ),like Figure 10 As shown; then solve for: ; Step f6, Substitute into In the calculation formula, reduce the number of subdivisions in the W direction; For example, ; in, Indicates updated ; Then For reference, update and The value range is to ensure that the rod diameter in the UVW directions is relatively balanced and the deformation is small. The specific calculation formula includes: ; ; ; ; in, Indicates updated ; Indicates updated ; Indicates updated ; Indicates updated ; Therefore, the number of subdivisions in the U direction is 6 to 8, the number of subdivisions in the V direction is 14 to 21, and the number of subdivisions in the W direction is 1 to 3. Within these updated ranges, the number of lattice subdivisions can be selected to ensure that the volume fraction meets the lightweight requirements. Preferably, for the partitioning form, the number of subdivisions in the U direction is 7, the number of subdivisions in the V direction is 16, and the number of subdivisions in the W direction is 3, such as Figure 11 As shown in the figure, the rod diameter transitions from the maximum stress area to the minimum stress area between 3 and 4 mm. Step f7: Setting a solid edge skin at the edge of the midsole to maintain edge integrity, prevent the rod end points from being exposed, and improve printability; A hollow skin is set at the edge of the support area, and the lattice of the hollow skin is consistent with the lattice of the support area to increase visibility; At the contact surface between the midsole and the foot, is significantly greater than W, so based on and The preset upper limit of the shaft diameter is calculated and selected through the shaft diameter calculation formula to improve foot comfort, such as Figure 12 As shown; For example, since the contact surface is in the U and V directions, it is only necessary to set a larger rod diameter in these two directions. is 14, then the specific calculation formula is: ; in, Indicates a larger rod diameter; On the bottom of the midsole, due to is significantly greater than W, so based on and The preset upper limit of the rod diameter is calculated and selected through the rod diameter calculation formula to avoid the entry of large particles, improve durability, and increase the friction of the bottom surface to prevent slipping, such as Figure 13 shown.

[0063] Furthermore, if Figure 14As shown, the design method of the overall form includes: Generate a volume mesh model based on the point cloud image. In the volume mesh model, use unit cells of the Volume Mesh-Mesh Edges type (tetrahedral lattice generated by volume mesh) to generate the lattice. Calculate the unit cell width, unit cell length, and unit cell height from the maximum stress area to the minimum stress area according to the above formula. For example: ; ; ; Round and unify The minimum value of The minimum value of The maximum value of the unit cell size is 12; based on , with two lattice rods in parallel, calculate the minimum value of the unit cell size and obtain ; Then, the value range of the unit cell size is 7~12 mm; The midsole does not have an edge solid skin. This is because the lattice of the overall midsole is generated along the grid lines, so the lattice rods on the outer surface are continuous, which can minimize weight and increase ventilation space. At the contact surface between the midsole and the foot, is significantly greater than W, so based on and The preset upper limit of the shaft diameter is calculated and selected through the shaft diameter calculation formula to improve foot comfort, such as Figure 15 As shown; On the bottom of the midsole, due to is significantly greater than W, so based on and The preset upper limit of the rod diameter is calculated and selected through the rod diameter calculation formula to avoid the entry of large particles, improve durability, and increase the friction of the bottom surface to prevent slipping, such as Figure 16 shown.

[0064] Furthermore, in step 5, the surface lattice design includes: For the partitioned midsole, a Face-centered cubic type textured indentation entity is used to construct the toe shield and the heel shield, so as to echo the unit cell of the midsole and improve the hardness, and prevent mud and sand from flying in. Figure 17As shown in Figure a; for the overall midsole, a body-centered cubic type textured indentation entity is used to construct the toe shield and the heel shield, so as to echo the unit cell of the midsole and improve the hardness, and prevent mud and sand from flying in. Figure 17 As shown in Figure b; A solid surface is provided on the edge of the tongue to prevent the shoe opening from cracking after frequent wearing and taking off; The heel cover, toe cover and opening edge are provided with relatively dense hollowing to achieve the purpose of upper shaping and ventilation: for the partition form, Octet type hollowing is adopted; for the overall form, hexagonal hollowing is adopted; On the upper, there are relatively sparse hollowing to facilitate ventilation: for the partition form, the Face-centered cubic type of hollowing is adopted; for the overall form, the hexagonal hollowing is adopted; In this way, an integrated corrective lattice shoe can be obtained. Specifically, TPU can be used as the filling material, and the SLS technology in 3D printing can be used for integrated processing and molding. Due to the filling characteristics of the lattice itself, the lattice shoe not only does not require assembly and production, but also greatly reduces the workload of removing the support.

[0065] Example 2: This embodiment provides an integrated orthopedic lattice shoe design system, including a data acquisition module, a data processing module, and a result generation module; The data acquisition module is used to collect user data; the user data includes height and weight information, foot shape information and plantar stress information; The data processing module includes a pre-processing unit, a whole shoe shape and partition design unit, a midsole shape and partition design unit, and a lattice design unit; The pre-processing unit determines plantar problems and pressure adjustment areas based on user data; the plantar problems include flat feet, etc. The whole shoe shape and zone design unit performs whole shoe shape and zone design based on the height and weight information and the foot shape information to obtain a whole shoe zone diagram; the whole shoe zone diagram includes the midsole and the surface; the surface includes the toe cover, the heel cover, and the upper, etc.; The midsole shape and zoning design unit obtains a stress distribution cloud map of the sole of the foot based on the sole stress information; and then performs midsole shape and zoning design based on the foot shape information and the stress distribution cloud map to obtain a midsole zoning map; The lattice design unit performs lattice design of the midsole based on the midsole partition diagram and in combination with lattice mechanical performance analysis to obtain a midsole lattice diagram; performs surface lattice design based on the entire shoe partition diagram and the midsole lattice diagram and in combination with lattice mechanical performance analysis to obtain a surface lattice diagram; and combines the midsole lattice diagram with the surface lattice diagram to form an overall diagram of the lattice shoe; The result generating module is used to send out the overall image of the lattice shoe.

[0066] Example 3: This embodiment provides a design device for an integrated orthopedic lattice shoe, including a processor, a memory, and a bus. The memory stores instructions and data read by the processor. The processor is used to call the instructions and data in the memory to execute the design method described above. The bus connects the functional components to transmit information.

[0067] Furthermore, the design device also includes a three-dimensional scanner for performing three-dimensional scanning on the foot and collecting foot morphological information.

[0068] Furthermore, the design device also includes a plantar pressure detector, which is used to collect the plantar pressure of both feet when the user is standing and walking, and convert the obtained stress distribution cloud map.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A design method for an integrated orthopedic lattice shoe, characterized in that: include: Step 1: Collect user data and determine plantar problems and pressure adjustment areas; the user data includes height and weight information, foot morphology information, and plantar stress information; Step 2: Based on the height, weight, and foot shape information, perform whole shoe shape and partition design to obtain a whole shoe partition diagram; the whole shoe partition diagram includes the midsole and the surface; the surface includes the toe shielding portion, the heel shielding portion, and the upper; Step 3: Based on the plantar stress information, a stress distribution cloud map of the plantar is obtained; then, based on the foot morphology information and the stress distribution cloud map, a midsole morphology and partition design is performed to obtain a midsole partition map; Step 4: Based on the midsole partition diagram and combined with the lattice mechanical performance analysis, the lattice design of the midsole is performed to obtain the midsole lattice diagram; Step 5: Based on the whole shoe partition diagram and the midsole lattice diagram, combined with the lattice mechanical performance analysis, the surface lattice design is performed to obtain the surface lattice diagram; the midsole lattice diagram and the surface lattice diagram are combined to form the overall diagram of the lattice shoe.

2. The design method according to claim 1, characterized in that: In step 1, the foot morphology information is collected by performing a three-dimensional scanning of the foot using a three-dimensional scanner, including a foot morphology model and foot dimensions; the foot dimensions include foot length, foot width, forefoot width, rearfoot width, midfoot height, toe height and rearfoot height.

3. The design method according to claim 1, characterized in that: In step 1, the plantar stress information includes: collecting the plantar pressure of both feet in the user's standing and walking postures through a plantar pressure detector, and converting it into a stress distribution cloud map; based on the stress distribution cloud map, calculating the arch index information and the plantar pressure distribution ratio information.

4. The design method according to claim 3, characterized in that: The arch index information refers to defining the forefoot, midfoot, and hindfoot in a top-view outline of the foot; calculating the proportion of the midfoot along the longitudinal length of the three to determine whether it is flat foot; The forefoot represents the metatarsal region, the midfoot represents the arch region, and the hindfoot represents the heel region; The specific calculation methods include: Step a1: In the top view of the foot, connect the heel vertex and the third metatarsal vertex to obtain line J; draw a perpendicular line to the j line at the third metatarsal vertex to obtain a first dividing line; draw a perpendicular line to the j line at the widest junction between the arch and the forefoot to obtain a second dividing line; draw a perpendicular line to the j line at the widest junction between the arch and the heel to obtain a third dividing line; draw a perpendicular line to the j line at the heel vertex to obtain a fourth dividing line; the area between the first dividing line and the second dividing line is regarded as the forefoot; the area between the second dividing line and the third dividing line is regarded as the midfoot; the area between the third dividing line and the fourth dividing line is regarded as the hindfoot; and the remaining area is regarded as the toes. Step a2, measuring the lengths of the line segments intercepted by line j in the forefoot, midfoot, and hindfoot regions, respectively, as the forefoot length, midfoot length, and hindfoot length; Step a3: Calculate the arch index. The specific formula is: ； in, represents the arch index; Indicates the length of the forefoot; Indicates mid-foot length; Indicates the length of the hind foot.

5. The design method according to claim 4, characterized in that: The specific calculation method of the plantar pressure distribution ratio information includes: Step b1: Based on the stress distribution cloud map, the pressure data of the forefoot, midfoot, hindfoot, and toe regions are summed to obtain the forefoot pressure, midfoot pressure, hindfoot pressure, and toe pressure. The specific formula includes: ； in, Indicates forefoot pressure; Indicates the first The pressure of the data points; ； in, Indicates midfoot pressure; Indicates the first The pressure of the data points; ； in, Indicates rear foot pressure; Indicates the first The pressure of the data points; ； in, Indicates toe pressure; Indicates the first The pressure of the data points; ； in, Indicates total pressure; Step b2: Calculate the pressure distribution ratio of each area; the specific formula includes: ； in, Indicates the proportion of forefoot pressure; ； in, Indicates the proportion of midfoot pressure; ； in, Represents the proportion of rear foot pressure; ； in, Indicates the proportion of toe pressure.

6. The design method according to claim 4, characterized in that: In step 3, the midsole shape and partition design method also includes a midsole center of gravity adjustment method, which specifically includes: Step c1: Calculate the pressure difference between the pressure adjustment area and the non-pressure adjustment area. The specific formula is: ； in, Indicates the pressure difference; Indicates the pressure change in the upper limit of the pressure ratio range of the pressure adjustment area relative to the non-pressure adjustment area; Indicates the pressure change in the non-pressure adjustment area relative to the lower limit of the pressure ratio range of the non-pressure adjustment area; Step c2: Calculate the foot tilt angle. The specific formula is: ； in, Indicates the foot tilt angle; Step c3: Calculate the height difference between the non-pressure adjustment area and the pressure adjustment area , the specific formula is: ； in, Indicates foot length.

7. The design method according to claim 1, characterized in that: In step 3, the midsole partition diagram includes a partition form and an overall form; The zoning form refers to dividing the midsole into a support area and a cushioning area, and the two areas use unit cell types of different shapes; The overall form means that the midsole is not divided into zones and adopts the same unit cell type.

8. The design method according to claim 7, characterized in that: When the midsole partition diagram is in partitioned form, select Octet as the unit cell type for the support area; select Face centered cubic as the unit cell type for the cushioning area; When the mid-bottom partition diagram is in a holistic form, select Volume Mesh-Mesh edges or Volume Mesh-Dual as the unit cell type.

9. An integrated orthopedic lattice shoe design system, characterized in that: It includes data acquisition module, data processing module and result generation module; The data acquisition module is used to collect user data; the user data includes height and weight information, foot shape information and plantar stress information; The data processing module includes a pre-processing unit, a whole shoe shape and partition design unit, a midsole shape and partition design unit, and a lattice design unit; The pre-processing unit determines plantar problems and pressure adjustment areas based on user data; the plantar problems include flat feet, etc. The whole shoe shape and zone design unit performs whole shoe shape and zone design based on the height and weight information and the foot shape information to obtain a whole shoe zone diagram; the whole shoe zone diagram includes the midsole and the surface; the surface includes the toe cover, the heel cover, and the upper, etc.; The midsole shape and zoning design unit obtains a stress distribution cloud map of the sole based on the sole stress information; Then, based on the foot morphology information and stress distribution cloud map, the midsole morphology and partition design are carried out to obtain the midsole partition map; The lattice design unit performs lattice design of the midsole based on the midsole partition diagram and combines lattice mechanical property analysis to obtain a midsole lattice diagram; Based on the whole shoe partition diagram and the midsole lattice diagram, combined with the lattice mechanical properties analysis, the surface lattice design is carried out to obtain the surface lattice diagram; the midsole lattice diagram and the surface lattice diagram are combined to form the overall diagram of the lattice shoe; The result generating module is used to send out the overall image of the lattice shoe.

10. A design device for an integrated orthopedic lattice shoe, characterized in that: It includes a processor, a memory and a bus, the memory stores instructions and data read by the processor, the processor is used to call the instructions and data in the memory to execute the design method as described in any one of claims 1 to 8, and the bus connects the functional components to transmit information.

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