Foot pad bow bearing type half sole structure and elastic force generating method thereof
By using an integrated arch support forefoot structure with coordinated deformation of the upper and lower tongues and adjustment of material modulus, the problems of redundancy and poor deformation coordination in existing footpad structures are solved, achieving stable support and comfortable elastic adjustment.
Patent Information
- Application Number
- CN202511601259.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-01-02
AI Technical Summary
The existing forefoot pads have redundant structures, poor deformation coordination, and unclear elasticity principles, resulting in insufficient support and rebound performance, making it difficult to adapt to the complex force characteristics of the forefoot.
The footpad features an integrated arch support forefoot structure, consisting of an upper tongue and a lower tongue, which are connected by a single molding process to form a U-shaped opening. It utilizes the synergistic deformation of the same elastic material and different elastic moduli to achieve precise rebound adjustment.
It achieves enhanced deformation synergy, with a clear elasticity generation principle, adapts to the force on the forefoot, provides stable support and comfort, and is suitable for elasticity needs in different scenarios.
Smart Images
Figure CN121242326A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of shoe insole, in particular to an insole arch support type forefoot structure and a method for generating elasticity, which is especially suitable for shoe products that need to adapt to the complex stress of the forefoot and achieve precise rebound adjustment. BACKGROUND
[0002] In the field of shoe insoles, the forefoot area is the main stress area during walking and exercise, and its support and rebound performance directly affects foot comfort and health. The existing forefoot insole adopts a layered structure or a homogeneous block structure, which has the following defects:
[0003] Structural redundancy: the layered structure requires additional design of the cooperation relationship between the shell and the internal components, which is complex to assemble and prone to component deviation, affecting stress stability;
[0004] Poor deformation coordination: in homogeneous block or layered structures, each part deforms independently and cannot form a coordinated effect of "flexible deformation at the front end - stable support at the tail", and the ability to adapt to the "front large and rear small" stress characteristics of the forefoot is weak;
[0005] Unclear principle: the existing structure does not clearly define the "integration of the main body and the functional part", which makes it difficult to break through the performance bottleneck without theoretical guidance at the structural level.
[0006] Therefore, there is an urgent need for an integrated structure in which the upper and lower tongues directly constitute the forefoot main body, which realizes controllable rebound through special design and clearly defines the principle of generating elasticity to solve the problems of the existing technology. SUMMARY
[0007] The present application aims to solve the problems of structural redundancy, poor deformation coordination, and unclear elasticity principle of existing forefoot insoles, and provides an integrated design, deformation coordination, and clear principle of an insole arch support type forefoot structure and a method for generating elasticity.
[0008] To achieve the above-mentioned purpose, the present application realizes the following technical solutions:
[0009] An insole arch support type forefoot structure, the forefoot structure is an integrated structure, which constitutes a forefoot main body by an upper tongue and a lower tongue;
[0010] The upper tongue constitutes the upper part of the forefoot main body and is in the form of a flat plate, the upper end surface is adapted to the contour of the forefoot bottom surface, and the front end is a free end;
[0011] The lower tongue constitutes the lower part of the forefoot main body and is in the form of an arc-shaped protrusion, the arc-shaped surface faces downward, and the front end is a free end;
[0012] The upper tongue and the lower tongue are integrally connected at the tail end, and the front ends of the upper tongue and the lower tongue form a U-shaped opening; the width of the U-shaped opening is 1 / 3-1 / 2 of the total width of the forepaw main body, and the depth is 1 / 4-1 / 3 of the total length of the forepaw main body.
[0013] The upper tongue and the lower tongue are made of the same elastic material, and the elastic modulus of the elastic material is 100GPa-1000GPa, for example, carbon fiber and titanium alloy.
[0014] A method for generating elasticity of an arch-shaped forepaw structure of a foot pad, comprising the following steps:
[0015] S1: When the current foot sole applies downward pressure to the upper tongue, because the front end of the forepaw main body is a U-shaped opening and the tail end is a closed connection, the deformation amount of the front end of the forepaw main body is greater than that of the tail end, forming a deformation gradient;
[0016] S2: The pressure is transmitted to the upper tongue, and the upper tongue is bent downward with the tail end closed connection point as the fulcrum; the lower tongue is simultaneously stretched in an arc shape with the tail end closed connection point as the fulcrum, and the two form a "bending-stretching" cooperative differential deformation;
[0017] S3: The elastic material generates a corresponding coefficient of restitution based on its own elastic modulus of 100GPa-1000GPa; the greater the elastic modulus, the faster and greater the rebound speed; the smaller the elastic modulus, the slower and smaller the rebound speed; the elasticity is adjusted through the cooperative deformation of the integrated structure and the material rebound.
[0018] Further, the elastic material is carbon fiber, titanium alloy, etc., including but not limited to the above-mentioned materials.
[0019] Further, the tail end closed connection mode of the upper tongue and the lower tongue is integrally formed, and the forming process includes but is not limited to injection molding, splicing, etc., without process connection mode limitation.
[0020] Further, the front end overhanging length of the upper tongue and the lower tongue is 1 / 5-1 / 4 of the total length of the forepaw main body.
[0021] Further, in step S1, the deformation amount of the front end and the tail end of the forepaw main body is adjusted according to the characteristics of the elastic material and the size of the forepaw main body, to ensure that the "front large and rear small" deformation gradient requirement is met.
[0022] Compared with the prior art, the beneficial effects of the present application are as follows:
[0023] 1. Deformation cooperation: The upper tongue bending and the lower tongue stretching are simultaneously performed by the tail end integration connection, the force transmission is uninterrupted, the deformation gradient is more stable, and the ability to adapt to the force of the forefoot is significantly improved.
[0024] 2. Principle clarity: clear "one-piece structure front opening-tail constraint-coordinated deformation" elastic force generation logic, providing both structural and mechanical theoretical basis for structural optimization;
[0025] 3. Performance controllability: through the matching of material elastic modulus (100GPa-1000GPa) and coordinated deformation, precise adjustment of rebounding force and speed is realized, adapting to daily, sports and other multi-scenario needs;
[0026] 4. Comfortable support: flat upper tongue fits the foot, and the arc-shaped lower tongue (curved surface facing down) increases the contact area with the ground, disperses pressure evenly, and improves long-time use comfort;
[0027] 5. Strong compatibility: no process connection method restriction, flexible forming process; size parameters are expressed in proportion, adapting to different shoe size needs, and the material selection range is wide. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 Fig. 1 is a schematic diagram of the overall structure of a foot pad arch support type forefoot structure (1) of the present application;
[0029] Figure 2 Fig. 2 is a schematic diagram of the overall structure of a foot pad arch support type forefoot structure (2) of the present application;
[0030] Figure 3 Fig. 3 is a schematic diagram of the overall structure of a foot pad arch support type forefoot structure (3) of the present application;
[0031] Figure 4 Fig. 4 is a schematic diagram of the overall structure of a foot pad arch support type forefoot structure (4) of the present application. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0033] In the description of the embodiments of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0034] In addition, if the terms "horizontal", "vertical", "overhanging" and the like are used, they do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0035] In the description of the embodiments of the present application, "a plurality of" represents at least 2.
[0036] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" are used, they should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0037] As shown in Figure 1 , 2 , 3, 4, the present application provides a foot pad arch support type forefoot structure and a method for generating elasticity, characterized in that:
[0038] (1) Foot pad arch support type forefoot structure
[0039] The forefoot structure 100 is an integrated structure, which is composed of an upper tongue 1 and a lower tongue 2 to form a forefoot main body:
[0040] Upper tongue 1: The upper part of the forefoot main body, in the form of a flat plate, the upper end surface is attached to the contour of the forefoot bottom surface, and the front end is a free end;
[0041] Lower tongue 2: The lower part of the forefoot main body, in the form of an arc-shaped protrusion, the arc-shaped surface faces downward (the protruding surface faces the ground), and the front end is a free end;
[0042] Connection relationship: the upper tongue 1 and the lower tongue 2 are connected at the tail end by one-piece forming (including but not limited to injection molding, splicing and other processes) to realize closed connection, forming a whole structure of "front end U-shaped opening, tail closed"; the width of the U-shaped opening is 1 / 3-1 / 2 of the total width of the forepaw body, and the depth is 1 / 4-1 / 3 of the total length of the forepaw body, and the opening structure is used to weaken the front end constraint and improve the deformation freedom;
[0043] Material properties: the upper tongue and the lower tongue are made of the same elastic material, and the material can be selected from carbon fiber, titanium alloy and the like (including but not limited to the above materials), and the elastic modulus can be controlled in the range of 100GPa-1000GPa to ensure the deformation coordination of the integrated structure.
[0044] (2) Elastic force generation method
[0045] The method is based on the above integrated forepaw structure and includes the following steps:
[0046] S1: Deformation gradient forming stage
[0047] When the current foot sole applies downward pressure to the upper tongue (upper part of the forepaw body), the deformation amount of the front end of the forepaw body (bending of the upper tongue + stretching of the lower tongue) is significantly larger than the deformation amount of the tail end due to the U-shaped opening of the forepaw body front end (both the upper and lower tongues are free at the front end) and the closed connection of the tail end (rigid constraint), forming a "large front and small back" deformation gradient, which accurately adapts to the stress distribution of the forefoot sole;
[0048] S2: Differential coordinated deformation stage
[0049] The pressure is directly transmitted to the upper tongue, which bends downward (the front end is free and hangs down) with the tail end closed connection point as the fulcrum; the lower tongue is curved downward due to the arc surface, and is integrally connected with the tail end of the upper tongue, synchronously receiving the pressure of the upper tongue, and producing arc stretching deformation (the convex surface expands towards the ground) with the tail end connection point as the fulcrum; the two realize "bending-stretching" coordinated deformation through the integrated connection of the tail end, which not only maintains the independent deformation characteristics (upper tongue bending and lower tongue stretching), but also avoids relative displacement, ensuring continuous force transmission;
[0050] S3: Springback control stage
[0051] Different elastic materials with different elastic moduli have different molecular chain reset characteristics in the above coordinated deformation process: 100GPa-500GPa materials (commonly used, such as low modulus carbon fiber) have strong molecular chain flexibility and slow and soft springback; 500GPa-1000GPa materials (used for sports, such as titanium alloy) have strong molecular chain rigidity and fast and strong springback; by selecting materials with different elastic moduli, the springback coefficient of the integrated structure can be accurately controlled to realize the scenario-based adaptation of the elastic force.
[0052] Example 1: Foot pad arch support forepaw structure for daily walking
[0053] Structure size: Refer to the drawing 1:2 scale, the total length of the forepaw body (upper tongue + lower tongue integration) is 80mm, the total width is 50mm, the total thickness is 10mm; the width of the U-shaped opening is 18mm (1 / 3 of the total width), the depth is 20mm (1 / 4 of the total length); the thickness of the upper tongue (flat plate) is 2mm, and the front end overhanging length is 1 / 5 (16mm) of the total length of the forepaw body; the arc radius of the lower tongue (arc-shaped protrusion, curved surface downward) is 18mm, the protrusion height is 6mm, and the front end overhanging length is 1 / 5 (16mm) of the total length of the forepaw body;
[0054] Material selection: carbon fiber with elastic modulus of 100GPa, integrated splicing forming (process is not limited);
[0055] Forming process: the upper tongue and the lower tongue are integrally spliced and closed at the tail, and the front end naturally forms a U-shaped opening without additional assembly steps;
[0056] Use effect: when walking, the front end deformation amount adapts to the material characteristics and size requirements, maintains the "front large and rear small" gradient, the pressure is directly transmitted to the lower tongue through the upper tongue, and then uniformly conducted to the ground through the arc surface of the lower tongue, the rebound time is 1-2 seconds, there is no component offset or friction discomfort.
[0057] Example 2: Foot pad arch support forepaw structure for sports fitness
[0058] Structure size: the total length of the forepaw body is 80mm, the total width is 50mm, and the total thickness is 10mm; the width of the U-shaped opening is 25mm (1 / 2 of the total width), and the depth is 27mm (1 / 3 of the total length); the thickness of the upper tongue is 2mm, and the front end overhanging length is 1 / 4 (20mm) of the total length of the forepaw body; the arc radius of the lower tongue is 15mm (enhanced rigidity), and the front end overhanging length is 1 / 4 (20mm) of the total length of the forepaw body;
[0059] Material selection: titanium alloy with elastic modulus of 500GPa, integrated injection molding (process is not limited);
[0060] Forming process: the upper tongue and the lower tongue are integrally injection molded and closed at the tail, and the front end naturally forms a U-shaped opening;
[0061] Use effect: when jumping, the front end deformation amount adapts to the material characteristics and size requirements, maintains the "front large and rear small" gradient, the rebound time is 0.5-1 second, the cooperative deformation response is fast, the support force is strong, and it is suitable for high-intensity sports.
[0062] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution are not creative, and should belong to the protection scope of the present application.
Claims
1. A forefoot structure of a foot pad, characterized in that: the forefoot structure is an integrated structure, which is composed of an upper tongue and a lower tongue to form a forefoot body; the upper tongue forms an upper part of the forefoot body and is in a flat plate shape, with an upper end surface adapted to the contour of the front sole surface and a front end being a free end; the lower tongue forms a lower part of the forefoot body and is in an arc shape, with an arc surface facing downward and a front end being a free end; the upper tongue and the lower tongue are connected at a tail end by one-piece forming, and the front ends of the two form a U-shaped opening; the width of the U-shaped opening is 1 / 3-1 / 2 of the total width of the forefoot body, and the depth is 1 / 4-1 / 3 of the total length of the forefoot body; the upper tongue and the lower tongue are made of the same elastic material, and the elastic modulus of the elastic material is 100GPa-1000GPa, for example, carbon fiber and titanium alloy.
2. A method of generating elastic force based on the arch-supporting forefoot structure of the insole according to claim 1, characterized by, The steps include: S1: When the front sole exerts downward pressure on the upper tongue, the deformation amount of the front end of the forefoot body is greater than that of the tail end due to the U-shaped opening at the front end and the closed connection at the tail end, forming a deformation gradient; S2: The pressure is transmitted to the upper tongue, which bends downward at the tail end closed connection point; the lower tongue is simultaneously stretched in an arc shape at the tail end closed connection point, and the two form a "bending-stretching" differential deformation; S3: The elastic material has a corresponding coefficient of restitution based on its elastic modulus of 100GPa-1000GPa; the greater the elastic modulus, the faster and greater the rebound speed and force; the smaller the elastic modulus, the slower and smaller the rebound speed and force; the elastic modulus of the material is adjusted by the coordinated deformation of the integrated structure and the coordinated rebound of the material.
3. An arch supported forepart structure for a footbed as defined in claim 1, wherein: The elastic material is carbon fiber, titanium alloy, etc., including but not limited to the above-mentioned materials.
4. An arch supported forepart structure for a footbed as defined in claim 1, wherein: The tail end closed connection mode of the upper tongue and the lower tongue is one-piece forming, and the forming process includes but is not limited to injection molding, splicing, etc., without process connection mode restrictions.
5. An arch supported forepart structure for a footbed as defined in claim 1, wherein: The front end of the upper tongue and the lower tongue is suspended by a length of 1 / 5-1 / 4 of the total length of the forefoot body.
6. The method of claim 2, wherein: In step S1, the deformation amounts of the front end and the tail end of the forefoot body are adjusted according to the characteristics of the elastic material and the size of the forefoot body to ensure that the "front large and rear small" deformation gradient requirement is met.