Far mountain dance three-dimensional force correcting insole and preparation process thereof

Abstract

The invention discloses a far mountain dance three-dimensional force correcting insole and a preparation process thereof, and belongs to the field of insoles, the far mountain dance three-dimensional force correcting insole comprises a base layer, a buffer layer, a breathable antibacterial layer and a surface layer, and the base layer, the buffer layer, the breathable antibacterial layer and the surface layer are sequentially distributed from bottom to top; the base layer is made of an elastic rubber material, and a plurality of evenly-distributed anti-skid protrusions are arranged on the bottom face of the base layer. The insole is provided with the base layer, the buffer layer, the breathable antibacterial layer and the surface layer, all the layers are matched with one another, and the problems that an existing insole is poor in breathability, poor in antibacterial effect and poor in cushioning performance are effectively solved. Due to the breathable design of the breathable antibacterial layer and the surface layer, the breathability of the insole is greatly improved, and the foot is kept dry and comfortable all the time; the silver ion antibacterial agent and different plant spices are used, so that the growth of bacteria can be inhibited for a long time, and the odor of feet is improved; the buffer layer composed of the memory foam and the honeycomb-shaped silica gel blocks can fully absorb impact force and provide comfortable support and protection for feet.

Description

Technical Field

[0001] The invention relates to the technical field of insoles, in particular to a three-dimensional force correction insole for Yuanshan dance and a preparation process thereof. Background Art

[0002] Insoles are closely related to people's lives. However, traditional insoles are generally made of cloth, which have low comfort and poor elasticity.

[0003] Patent publication number CN111019329A discloses a three-dimensional force correction insole for Yuanshan dance and its preparation process. While this insole meets the basic requirements of insoles to a certain extent, it still has many shortcomings in practical application. The insole is not breathable. After prolonged use, the feet are prone to breeding bacteria due to the heat, causing foot odor and other problems. Its antibacterial properties are limited and cannot effectively inhibit bacterial growth for a long time.

[0004] In addition, the shock-absorbing effect of the insole is not ideal, and it cannot effectively alleviate the impact on the feet and joints when walking or exercising, reducing the comfort of wearing.

[0005] This invention aims to invent innovative multi-dimensional biomechanical corrective insoles. Through innovative structural design, it simultaneously addresses the complex problems of foot pain, such as collapsed arches, high arches, knee hyperextension, abnormal leg shape (X / O legs), insufficient ability to stretch the instep, and hallux valgus, which are common in dance and sports-related groups. It corrects the ankle-knee-hip joint alignment from the distal end to inhibit knee hyperextension compensation; it dynamically adjusts the force distribution of the lower limbs during walking, achieving "base correction extending upward to overall posture optimization," effectively helping dance and sports groups transform daily gait training into a collaborative intervention process of body correction and specialized ability improvement. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the present invention provides a three-dimensional force correction insole for Yuanshan dance and a preparation process thereof. This insole can effectively solve the problems of poor air permeability, poor antibacterial effect, and poor shock absorption performance of existing insoles, and significantly improve the user's wearing experience.

[0007] Technical solution: To solve the above technical problems, according to one aspect of the present invention, more specifically, a Yuanshan dance three-dimensional force correction insole, comprising a base layer, a cushioning layer, a breathable antibacterial layer, a surface layer, and a biomechanical correction layer, wherein the base layer, biomechanical correction layer, cushioning layer, breathable antibacterial layer, and surface layer are arranged in order from bottom to top;

[0008] The base layer is made of elastic rubber material, the bottom surface is provided with evenly distributed anti-slip protrusions, and the bottom surface is embedded with a deep U-cup reinforcement structure, which balances the force on the foot through a three-point support system;

[0009] The biomechanical correction layer is made of a polymer memory support material and has a three-dimensional arc structure, and is used to correct abnormal arches, tibial torsion and knee hyperextension;

[0010] The cushioning layer is composed of memory foam and honeycomb silicone blocks, and the density of the silicone blocks is thickened in the area of ​​the sole corresponding to the knee joint;

[0011] The breathable antibacterial layer is made of nanofiber material and is added with silver ion antibacterial agent;

[0012] The surface layer is made of cotton material, the surface of which is provided with air holes, and the cotton material is impregnated with plant spices.

[0013] Furthermore, the three-dimensional curvature structure of the biomechanical correction layer includes:

[0014] Dynamic arch support for correcting collapsed or high arches;

[0015] The medial convex structure is used to guide the tibia to return to its original position for external rotation, and the lateral concave structure is used to limit excessive internal rotation of the tibia;

[0016] Thickened heel support to limit excessive knee extension.

[0017] Furthermore, the deep U-cup reinforcement structure of the base layer includes an adjustable support plate, which is an elastic metal plate or a flexible plastic plate, and can achieve personalized three-point support (midpoint of the heel, inner and outer sides of the forefoot) by adjusting the curvature.

[0018] Furthermore, the density of air permeable holes in the forefoot area of ​​the surface layer is 30% higher than that in other areas.

[0019] Furthermore, the biomechanical correction layer is made of thermoplastic polyurethane (TPU) or EVA+TPU composite material, and has ventilation grooves on its surface that are aligned with the ventilation holes of the base layer.

[0020] Furthermore, the anti-slip protrusion is hemispherical, and the plant fragrance includes one or more of lavender, mint, and lemon.

[0021] According to another aspect of the present invention, more specifically, a process for preparing a Yuanshan Dance three-dimensional force correction insole comprises the following steps:

[0022] S1. Preparation of base layer: Heat and melt the elastic rubber material, inject it into a molding device with a non-slip raised mold, and simultaneously embed an adjustable deep U-cup support sheet, and cool it to form;

[0023] S2. Preparation of biomechanical correction layer: Based on the foot scan data, a three-dimensional curved structure is formed through 3D printing or injection molding, and ventilation grooves are opened on the surface;

[0024] S3. Preparation of cushioning layer: Cut memory foam, embed it into honeycomb silicone blocks (encrypt the area corresponding to the knee joint), and heat-press and laminate.

[0025] S4. Preparation of breathable antibacterial layer: using electrospinning technology to spin a nanofiber material solution containing silver ion antibacterial agent into a film, and drying;

[0026] S5. Surface preparation: Cut cotton material, punch out air holes (with increased density in the forefoot area), impregnate with plant fragrance solution, and dry;

[0027] S6. Assembly: stack in the order of base layer → biomechanical correction layer → buffer layer → breathable antibacterial layer → surface layer, and bond with hot melt adhesive.

[0028] Furthermore, the three-dimensional curvature structure of the biomechanical correction layer adjusts the support curvature, raised / recessed position and heel support block height according to the different needs of flat feet, high arches, X / O legs or knee hyperextension.

[0029] The beneficial effects of the three-dimensional force correction insole for Yuanshan dance and the preparation process thereof of the present invention are:

[0030] (1) The present invention solves the complex problems of foot pain such as collapsed arches, high arches, knee hyperextension, abnormal leg shape (X / O legs), insufficient ability to stretch the instep, and hallux valgus, which are common in dance and sports related groups through innovative structural design. It corrects the ankle-knee-hip joint alignment from the distal end to inhibit knee hyperextension compensation; it dynamically adjusts the force line distribution of the lower limbs during walking, achieving "extension of foot base correction to overall posture optimization", effectively helping dance and sports people to transform daily gait training into a coordinated intervention process of body correction and special ability improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] Figure 1 Schematic diagram of the structure of the insole of the present invention;

[0033] Figure 2 The figure is a schematic flow chart of the insole preparation process of the present invention. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0035] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 1-Figure 2A Yuanshan dance three-dimensional force correction insole and its preparation process, including a base layer, a biomechanical correction layer, a cushioning layer, a breathable antibacterial layer, and a surface layer, stacked in order from bottom to top. The functions and preparation details of each layer are as follows:

[0037] Example 1: Daily Lightweight Corrective Version (Suitable for Flat Feet + Knee Hyperextension)

[0038] 1. Base Preparation

[0039] Material: Elastic rubber (Shore hardness 60A)

[0040] Process:

[0041] The rubber was heated to 180° C. to melt, and injected into a mold with hemispherical anti-slip protrusions (3 mm in diameter, 2 mm in height), while an adjustable deep U-cup support sheet (flexible plastic sheet, 1 mm in thickness) was embedded.

[0042] Mold design: The deep U-cup structure corresponds to the heel area, and the three support points are the midpoint of the heel, the inner side of the forefoot (below the ball of the thumb), and the outer side of the forefoot (below the little toe). By adjusting the curvature of the plastic sheet (initial curvature 30°), arch support for flat feet can be achieved.

[0043] Finished product parameters: base thickness 3mm, bottom surface anti-slip bump density 10 / cm 2 .

[0044] 2. Preparation of Biomechanical Correction Layer

[0045] Material: Thermoplastic polyurethane (TPU, hardness 85A)

[0046] Customized design:

[0047] Dynamic support arc of the arch: For flat feet, an upward-convex arc structure is designed on the inside of the insole (below the arch), with an arc height of 5mm, to guide the arch to bear weight naturally.

[0048] Knee hyperextension inhibition structure: A 3mm thick support block is set in the heel area to limit the knee joint extension angle to ≤5°.

[0049] Process:

[0050] The user's foot shape data is obtained through a foot scanner to generate a three-dimensional model.

[0051] It is formed by injection molding, and has ventilation grooves on the surface (2mm width, 5mm spacing), which are aligned with the gaps between the anti-slip protrusions of the base layer to improve air circulation.

[0052] Finished product parameters: The correction layer is 4mm thick and has an overall three-dimensional curved surface that fits the arch of the foot.

[0053] 3. Buffer Layer Preparation

[0054] Material: memory foam (density 80kg / m 3 )+honeycomb silica gel block (pore diameter 4mm)

[0055] Process:

[0056] Cut 5mm thick memory foam into the shape of the insole, and embed a silicone block with double the density (the original spacing of 10mm is adjusted to 5mm) in the plantar area corresponding to the knee joint (1 / 3 of the front side of the arch).

[0057] Hot pressing conditions: 120℃, 0.5MPa pressure for 5 minutes to make the silicone block and memory foam tightly bonded.

[0058] 4. Preparation of breathable antibacterial layer

[0059] Material: Polyamide nanofiber (diameter 500nm) + silver ion antibacterial agent (addition amount 3%)

[0060] Process:

[0061] Electrospinning parameters: voltage 20 kV, receiving distance 15 cm, spinning time 30 min, forming a fiber membrane with a thickness of 2 mm.

[0062] Drying conditions: constant temperature drying at 60℃ for 2 hours.

[0063] 5. Surface Preparation

[0064] Material: pure cotton non-woven fabric (weight 80g / m 2 )

[0065] Process:

[0066] Stamped ventilation holes (1mm in diameter, density increased by 30% in the forefoot area, i.e. hole spacing adjusted from 10mm to 7mm).

[0067] Immerse in lavender fragrance solution (concentration 5%) for 10 minutes and dry at 50°C for 3 hours.

[0068] Finished product parameters: surface thickness 1mm, forefoot area air pore density about 14 / cm 2 .

[0069] 6. Assembly

[0070] The layers are stacked in the order of base layer → biomechanical correction layer → buffer layer → breathable antibacterial layer → surface layer. Hot melt adhesive (melting point 80°C) is applied to the edges of each layer, and pressure-bonded at 80°C for 5 minutes to form an integral insole.

[0071] Suitable for: Everyday casual shoes, suitable for dancers with mild flat feet and knee hyperextension, which can gradually correct the alignment of the arch and knee joints through daily walking, and are paired with lavender spices to enhance wearing comfort.

[0072] Example 2: Exercise-enhanced correction version (suitable for X-shaped legs + tibial torsion)

[0073] 1. Base Preparation

[0074] Material: Elastic rubber (Shore hardness 70A)

[0075] Process:

[0076] The melting temperature is 190℃, and an elastic metal support sheet (stainless steel sheet, 0.5mm thick, can be manually bent to adjust the curvature) is embedded, and the three-point support strength is increased by 30%.

[0077] Finished product parameters: base thickness 4mm, anti-slip protrusion height 2.5mm.

[0078] 2. Preparation of Biomechanical Correction Layer

[0079] Material: EVA+TPU composite material (EVA accounts for 60%, TPU accounts for 40%)

[0080] Customized design:

[0081] Tibial torsion correction structure: a 4mm high spiral protrusion is set on the medial side to guide tibial external rotation; a 3mm deep recessed groove is set on the lateral side to limit excessive internal rotation.

[0082] Arch support: For normal arches, a neutral curvature (height 3mm) is designed to maintain the natural shape of the arch.

[0083] Technology: 3D printing, the width of the surface ventilation groove is increased to 3mm to meet the heat dissipation needs of the feet during exercise.

[0084] Finished product parameters: Correction layer thickness 5mm, outer concave area occupies 1 / 4 of the insole width.

[0085] 3. Buffer Layer Preparation

[0086] Material: memory foam (density 90kg / m 3 )+Silica gel block (pore diameter 5mm)

[0087] Process:

[0088] The memory foam is 6mm thick, and the density of the silicone blocks in the knee joint area has been increased to 4mm from the original spacing to enhance impact absorption.

[0089] Hot pressing conditions: 130°C, 0.6 MPa pressure for 6 minutes.

[0090] 4. Preparation of breathable antibacterial layer

[0091] Parameter adjustment: spinning voltage 22kV, receiving distance 16cm, forming a fiber membrane with a thickness of 2.5mm, and the addition amount of silver ion antibacterial agent increased to 5%.

[0092] 5. Surface Preparation

[0093] Material: Cotton and linen blended fabric (cotton 70% + linen 30%)

[0094] Process: Punch 1.2mm diameter air holes, soak in mint flavor solution (concentration 8%) for 12 minutes, and the thickness after drying is 1.5mm.

[0095] 6. Assembly

[0096] The hot melt adhesive bonding temperature is increased to 90°C and the pressure is increased to 0.2MPa to ensure the stability of each layer structure during movement.

[0097] Suitable for: dance training shoes, sports shoes, for athletes with X-shaped legs and excessive tibial internal rotation, by strengthening lateral support and medial guidance, gradually adjusting the force line of the lower limbs, and mint flavoring to help relieve the stuffiness during exercise.

[0098] Example 3: Professional rehabilitation correction version (suitable for high arches + severe knee hyperextension)

[0099] 1. Base Preparation

[0100] Material: High elastic rubber (Shore hardness 50A)

[0101] Process: Melting temperature 200℃, deep U-cup support piece is fixed to the maximum arc (45°) to enhance heel stability.

[0102] Finished product parameters: base thickness 5mm, anti-slip bump density 12 pieces / cm 2 .

[0103] 2. Preparation of Biomechanical Correction Layer

[0104] Material: memory rebound TPU (temperature adaptability range -10℃~40℃)

[0105] Customized design:

[0106] High arch support: The arch area is designed with a downward concave pressure relief arc (depth 6mm) to reduce excessive weight bearing on the arch.

[0107] Knee hyperextension inhibition: The thickness of the heel support block is increased to 5mm, combined with the overall 3° backward tilt design of the insole, which forcibly limits the knee joint extension angle to ≤3°.

[0108] Process: After injection molding, the arc is finely polished by CNC milling machine to ensure that the fit with the high arch curve is ≥95%.

[0109] 3. Buffer Layer Preparation

[0110] Material: memory foam (density 100kg / m 3 )+Silica gel block (pore diameter 6mm)

[0111] Process: The memory foam is 8mm thick, and the entire layer is evenly embedded with silicone blocks (with a spacing of 4mm). Hot pressing conditions: 140°C and 0.7MPa pressure for 8 minutes.

[0112] 4. Preparation of breathable antibacterial layer

[0113] Parameter adjustment: The spinning time was extended to 40 minutes to form a fiber membrane with a thickness of 3 mm. The silver ion antibacterial agent was blended with the nanofibers for spinning, and the antibacterial effect was increased to 72 hours.

[0114] 5. Surface Preparation

[0115] Material: bamboo fiber fabric (weight 100g / m 2 )

[0116] Process: Punch 1.5mm diameter ventilation holes, soak in lemon flavor solution (concentration 10%) for 15 minutes, dry to a thickness of 2mm, and the density of ventilation holes in the forefoot reaches 16 / cm 2 .

[0117] 6. Assembly

[0118] Each layer is bonded with layered hot melt adhesive (the base layer and the correction layer use high-strength adhesive, and the remaining layers use flexible adhesive) to ensure a balance between rigid support and flexible fit.

[0119] Suitable scenarios: Rehabilitation training shoes, designed for patients with high arches and severe knee hyperextension, achieve the dual functions of "correction + protection" through a rigid support structure and dynamic decompression design. Lemon fragrance enhances the antibacterial and deodorizing effects.

[0120] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A three-dimensional force correction insole for Yuanshan dance, comprising a base layer, a cushioning layer, a breathable antibacterial layer, and a surface layer, characterized by: It also includes a biomechanical correction layer, wherein the base layer, biomechanical correction layer, buffer layer, breathable antibacterial layer and surface layer are arranged in order from bottom to top; The base layer is made of elastic rubber material, the bottom surface is provided with evenly distributed anti-slip protrusions, and the bottom surface is embedded with a deep U-cup reinforcement structure, which balances the force on the foot through a three-point support system; The biomechanical correction layer is made of a polymer memory support material and has a three-dimensional arc structure, and is used to correct abnormal arches, tibial torsion and knee hyperextension; The cushioning layer is composed of memory foam and honeycomb silicone blocks, and the density of the silicone blocks is thickened in the area of ​​the sole corresponding to the knee joint; The breathable antibacterial layer is made of nanofiber material and is added with silver ion antibacterial agent; The surface layer is made of cotton material, the surface of which is provided with air holes, and the cotton material is impregnated with plant spices.

2. The three-dimensional force correction insole for Yuanshan dance according to claim 1, characterized in that: The three-dimensional curvature structure of the biomechanical correction layer includes: Dynamic arch support for correcting collapsed or high arches; The medial convex structure is used to guide the tibia to return to its original position for external rotation, and the lateral concave structure is used to limit excessive internal rotation of the tibia; Thickened heel support to limit excessive knee extension.

3. The three-dimensional force correction insole for Yuanshan dance according to claim 2, characterized in that: The deep U-cup reinforcement structure of the base layer includes an adjustable support sheet, which is an elastic metal sheet or a flexible plastic sheet. Personalized three-point support (midpoint of the heel, inner and outer sides of the forefoot) is achieved by adjusting the curvature.

4. The three-dimensional force correction insole for Yuanshan dance according to claim 3, characterized in that: The density of air permeable holes in the forefoot area of ​​the surface layer is 30% higher than that in other areas.

5. The three-dimensional force correction insole for Yuanshan dance according to claim 4, characterized in that: The biomechanical correction layer is made of thermoplastic polyurethane (TPU) or EVA+TPU composite material, and has ventilation grooves on its surface aligned with the ventilation holes of the base layer.

6. The three-dimensional force correction insole for Yuanshan dance according to claim 5, characterized in that: The anti-slip protrusion is hemispherical, and the plant fragrance includes one or more of lavender, mint, and lemon.

7. A preparation process for a three-dimensional force corrective insole for Yuanshan dancers, comprising the three-dimensional force corrective insole for Yuanshan dancers according to claim 6, characterized in that: The steps are as follows: S1. Preparation of base layer: Heat and melt the elastic rubber material, inject it into a molding device with a non-slip raised mold, and simultaneously embed an adjustable deep U-cup support sheet, and cool it to form; S2. Preparation of biomechanical correction layer: Based on the foot scan data, a three-dimensional curved structure is formed through 3D printing or injection molding, and ventilation grooves are opened on the surface; S3. Preparation of cushioning layer: Cut memory foam, embed it into honeycomb silicone blocks (encrypt the area corresponding to the knee joint), and heat-press and laminate. S4. Preparation of breathable antibacterial layer: using electrospinning technology to spin a nanofiber material solution containing silver ion antibacterial agent into a film, and drying; S5. Surface preparation: Cut cotton material, punch out air holes (with increased density in the forefoot area), impregnate with plant fragrance solution, and dry; S6. Assembly: stack in the order of base layer → biomechanical correction layer → buffer layer → breathable antibacterial layer → surface layer, and bond with hot melt adhesive.

8. The preparation process of the three-dimensional force correction insole for Yuanshan dance according to claim 7, characterized in that: The three-dimensional curvature structure of the biomechanical correction layer adjusts the support curvature, the convex / concave position and the height of the heel support block according to the different needs of flat feet, high arches, X / O legs or knee hyperextension.

Images