Hallux valgus young female boot design method based on Kano model

Abstract

The invention discloses a design method for hallux valgus young female shoes and boots based on a Kano model. The design method comprises design of shoe and boot structures and design of shoe and boot appearances. The boot structure comprises a shoe body and a sole which are fixedly connected; an insole is also arranged on the sole; an adjustable buffering arch pad is fixedly arranged at the arch position of the sole; a detachable vamp is arranged on the shoe body; the boot appearance design comprises the steps of design style demand analysis; comparing with a Kano model to determine style demand attributes; calculating an influence coefficient EI of each style demand, and determining a priority order; and guiding the appearance design according to the priority of the style requirements. The method better conforms to the real demand of a positioning user, so that the style theme design conforms to the current fashion trend, and the demand preference of the positioned crowd is met. The overall satisfaction degree of the shoe design is improved by combining the shoe convenient structure optimization design with the shoe style theme preference design of the user.

Description

Technical Field

[0001] The present invention relates to a design method for shoes and boots for young women with hallux valgus based on the Kano model, belonging to the field of design of orthopedic shoes for hallux valgus. Background Art

[0002] Hallux valgus (HV) is manifested as the outward deviation of the first phalanx and the inward deviation of the first metatarsal bone, exceeding the normal physiological angle; the hallux valgus angle (HVA) is the included angle between the axes of the first metatarsal bone and the proximal phalanx; the intermetatarsal angle (IMA) is the included angle between the first metatarsal bone and the second metatarsal bone. Hallux valgus foot deformity is often accompanied by foot pain and other complications, causing balance disorders, abnormal gait patterns, as well as difficulties in foot aesthetics and shoe wearing for patients. However, once the hallux valgus foot deformity is formed, it is difficult to heal spontaneously, and many studies have emphasized that surgical treatment may lead to other complications.

[0003] Among all age groups, female patients with hallux valgus deformity are more common, and the male-female ratio is 1:9 - 15. The causes of hallux valgus in women can be divided into internal and external factors. Among them, the internal factor is the physiological factor. First, the genetic factor is a risk factor for hallux valgus deformity. Studies have shown that there is an obvious correlation between adult women suffering from this foot deformity and their mothers who also suffer from this foot deformity, indicating that the inheritance of this foot deformity disease is related to gender. Second, during pregnancy, women's weight increases rapidly, the pressure on the feet becomes greater, and after menopause, the calcium in the body is lost, and the sole bones, muscles and ligaments gradually relax, all of which provide conditions for the formation of hallux valgus deformity. The external factor for women to develop hallux valgus is their personal shoe-wearing habits, typically high heels. The changes in foot loading and plantar fascia force caused by high heels, as well as the lateral restraint and extrusion of the front of the shoes on each toe, ultimately lead to the formation of hallux valgus deformity. The above are the main reasons why hallux valgus deformity is more common in women than in men.

[0004] The hallux valgus group needs to consider many factors when purchasing shoes and boots, such as the width of the shoe toe, the drop between the front and back of the shoe sole, and the looseness of the shoe body. At present, the consumer market is highly competitive and fast-selling products dominate the market. Fashion changes rapidly and product replacements are fast. In order to keep up with the selling points, each enterprise has to consider cost and sales volume issues. Therefore, the shoe and boot market is still targeted at the general consumers with large sales volume. Moreover, in reality, many shoe brands in our country use European shoe sizes, which do not match the feet of most people in our country. Therefore, the shoe and boot market ignores the hallux valgus group to a certain extent in terms of appearance, basic shoe last conditions, or consideration of correction functions, greatly squeezing the shoe and boot selection space for the hallux valgus group and also affecting the development of functional shoes and boots for the hallux valgus group.

[0005] In patients with hallux valgus, the big toe of the first metatarsophalangeal joint of the foot deviates outward and causes foot pain. Its pathological characteristics make it impossible for patients to adapt to normal shoes and boots, and their daily walking activities are restricted. At present, hallux valgus orthoses mainly exist in the structural forms of individual products such as orthoses only for home use and orthoses that can be placed in shoes and boots, and there are problems such as discomfort in the detailed matching between the orthosis and the shoes and boots, displacement, and inconvenience for daily wearing.

[0006] Most shoes used by patients with existing foot diseases are ordinary shoes and boots, or they wear shoes and boots that lack effective combination with medical orthopedic theory and are not specifically designed based on pathological characteristics. Moreover, a large number of patients with special foot needs have insufficient pathological knowledge and attention, and only have the awareness to choose "comfortable" shoes, or directly choose wide and large shoes and boots as the "containers" for various orthoses.

[0007] Everyone's foot data and status are different, including but not limited to the severity of hallux valgus and the different heights of the foot arches. Then, an orthosis of a unified size will inevitably not meet the foot needs of users. During the use of the orthosis, through the process of walking of the foot, the extrusion of shoes and boots, and other external force factors, the placement position of the orthosis will shift or deviate from the required part. However, after going out, users have no conditions to take off their shoes at any time to readjust the position of the orthosis. If the orthosis does not fit well with the foot, it will affect the intervention effect or lead to ineffective intervention.

[0008] The design research of daily shoes for the hallux valgus population is still in the initial exploration stage, and the research is not sufficient enough to form a systematic and complete design theory framework model. And as special foot population shoes, they not only require good orthopedic performance, but also need to meet people's daily aesthetic and style needs. Then, how to prepare and design a design method for shoes and boots for young women with hallux valgus, which can combine orthopedics and aesthetics and improve the satisfaction of the user group, has become a problem to be solved. Summary of the Invention

[0009] The purpose of the present invention is to provide a design method for shoes and boots for young women with hallux valgus based on the Kano model. Through the Kano model, a survey on the shoe and boot style preferences of young women aged 18 to 25 is conducted to guide the design of the appearance style of shoes and boots, so as to improve the satisfaction of the user group.

[0010] To solve the above technical problems, the purpose of the present invention is realized as follows: A design method for shoes and boots for young women with hallux valgus based on the Kano model according to the present invention includes the design of the shoe and boot structure and the design of the shoe and boot appearance; The shoe structure includes a shoe body and a sole that are fixedly connected; an insole is further provided on the sole; an adjustable buffer arch pad is fixedly provided at the arch position of the sole; a detachable upper is provided on the shoe body; The design of the appearance of the shoe includes the following steps: S1. Analysis of design style requirements: including analysis of the target design population and information research and collection; In the analysis of the target design population, the selected population is young female patients with hallux valgus aged 18 to 35; The information research and collection include determining the design style theme and designing the Kano model questionnaire; The Kano model questionnaire is designed based on the design style theme. The questionnaire is in the form of questions from both positive and negative aspects, such as "having a certain style element" and "not having a certain style element", and the views of the respondents are set as five dimensions: "like", "should be so", "indifferent", "can tolerate", and "dislike" in each question; and the reliability analysis of the positive and negative questionnaires of the shoe design style requirements intention is carried out using the SPSS statistical data software; S2. Classification of style attributes: Assign values to the collected questionnaire data according to the Kano model result evaluation, and determine the style requirement attributes according to the highest frequency; The Kano model result evaluation is shown in the following table:

[0011] Among them, M - Must-be requirement; O - One-dimensional requirement; A - Attractive requirement; I - Indifferent requirement; R - Reverse requirement; Q - Questionable requirement; For the classified style requirement attributes, use the "Better-Worse" coefficient to analyze the sensitivity of users to a single style requirement and calculate the mean value; among them, Better / SI is obtained according to formula (1); Worse / DSI is obtained according to formula (2); Formula (1); Formula (2); S3. Priority ranking of style attributes: Substitute the style satisfaction coefficient values obtained in the previous step of analysis into the sensitivity matrix scatter plot with Better / |Worse| as the X / Y axis to clarify the quadrant to which each style requirement belongs; and calculate the influence coefficient EI of each style requirement to analyze the priority ranking within the same style; According to the Kano model theory, the priority ranking of attributes should be: M>O>A>I; The influence coefficient EI is obtained according to formula (3); Formula (3); Analyze the style requirements by integrating the "Better-Worse" method and the influence coefficient, and obtain the classification of the style requirements attributes for each style and the priority ranking of the style requirements within the same attribute. Step S4, shoe and boot appearance design plan: Guide the shoe and boot appearance design according to the priority of the style requirements within the same attribute obtained in the previous step.

[0012] Based on the above solution and as an optimized solution of the above solution: The adjustable cushioned arch support (4) includes a sealed accommodation cavity formed by a textile surface and high-resilience memory foam filled inside the sealed accommodation cavity.

[0013] Based on the above solution and as an optimized solution of the above solution: The textile fabric is a TPU composite fabric.

[0014] Based on the above solution and as an optimized solution of the above solution: An air vent is provided at the outer side of the foot of the adjustable cushioned arch support; a through hole adapted to the air vent is provided on the shoe body; and an air nozzle is installed at the position of the air vent.

[0015] The beneficial effects of the present invention are as follows: A design method for shoes and boots for young women with hallux valgus based on the Kano model proposed in the present invention, after analyzing and determining the positioning of the user group, proposes to use the Kano model to analyze the design style requirements, conducts research on the preference of the shoe and boot style theme of the targeted users, and converts it into quantifiable data, providing a guidance for the shoe and boot style theme design, more conforming to the real needs of the targeted users, making the style theme design meet the current fashion trend while satisfying the demand preferences of the targeted population. Through the optimized design of the shoe and boot convenience structure combined with the preference design of the user's shoe and boot style theme, the two are combined to improve the overall satisfaction of the shoe and boot design. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the hallux valgus orthopedic shoe involved in the present invention; Figure 2 is a flow chart of the shoe and boot appearance design involved in the present invention; Figure 3 is a Better-Worse sensitivity rectangular scatter plot; Figure 4 is an effect diagram of the hallux valgus orthopedic shoe involved in the first embodiment; Figure 5 is a physical diagram of the hallux valgus orthopedic shoe involved in the first embodiment; Figure 6 is an effect diagram of the hallux valgus orthopedic shoe involved in the second embodiment; Figure 7 is a physical diagram of the hallux valgus orthopedic shoe involved in the second embodiment; Figure 8 It is the effect diagram of the hallux valgus orthopedic shoes involved in the third embodiment; Figure 9 It is the physical diagram of the hallux valgus orthopedic shoes involved in the third embodiment.

[0017] The markings in the figure are explained as follows: 1 - shoe body; 2 - shoe sole; 3 - insole; 4 - adjustable buffer arch pad; 5 - detachable upper; 6 - through hole; 7 - vent. Detailed implementation manners

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] As Figure 1 shown, a design method for hallux valgus shoes and boots for young women based on the Kano model involved in the present invention includes the design of the structure of the shoes and boots and the design of the appearance of the shoes and boots.

[0020] According to the research on hallux valgus orthoses, toe separators have significant effects on reducing the hallux valgus angle, redistributing plantar pressure and relieving foot pain. The arch pad is a structure that brings buffering and support to the arch and relieves pain. Arch pads with different heights and sizes will surely have different effects on the user's feet. Therefore, an arch buffer pad that can be adjusted immediately according to the degree of foot pain is also very important.

[0021] A hallux valgus orthopedic shoe involved in the present invention includes a shoe body 1 and a shoe sole 2 fixedly connected to each other; an insole 3 is further provided on the shoe sole 2; an adjustable buffer foot pad 4 is fixedly provided at the arch position of the shoe sole 3. A detachable upper 5 is provided on the shoe body 1.

[0022] Everyone's foot data is different, and the toe separators and arch pad heights adapted are different. The degree of adaptation during use also affects the overall effect. The same toe separator shows different effects when paired with different arch pads. However, the presentation of the improvement effect is also related to the placement position and fitting degree of the intervention device. In addition, the length of use of the orthosis will also cause foot muscle fatigue of the user. When the user feels discomfort, fatigue during use or the toe separator shifts and fails to achieve the orthopedic effect, the orthosis needs to be removed or adjusted at any time; arch pads of uniform size cannot meet the needs of different arches, and may need to be adjusted larger or smaller. A single size cannot achieve the best buffering and pain relief effects, and excessive intervention will cause discomfort to the user's feet. Therefore, the adaptability and the immediacy and convenience of adjustment of the orthosis when wearing shoes and boots are reasonable and necessary.

[0023] The effective structures for improving the hallux valgus angle mainly include: the anterior transverse metatarsal arch support structure and the structure for intervening in the toe placement position; the effective structures for relieving foot pain mainly include: the medial longitudinal arch support structure, the structure for intervening in the toe placement position, and an orthotic insole containing a metatarsal pad and a medial longitudinal arch support. Among them, the structure for intervening in the toe placement position, which can both improve the hallux valgus angle and relieve foot pain, is an essential structure. And the structure for intervening in the toe placement position has been relatively maturely developed in the market, that is, the toe separator.

[0024] The toe separation structure is the main effective structure for improving the hallux valgus angle and relieving foot pain, and it is taken as the primary structure to be referred to in hallux valgus shoes. However, the development of hallux valgus toe separation type orthotics in the market has been basically mature. The existing popular hallux valgus toe separation orthotics mainly include toe separators, hallux valgus correction socks, hallux valgus correction toe covers, hallux valgus correction bands, and adjustable thumb separators.

[0025] Since the toe joints are active frequently during foot walking, the toe separation type orthotics will have position offsets due to foot activities during use, and muscle fatigue will occur due to the accumulation of use time. Therefore, users need to appropriately adjust the position of the toe separator, the correction degree, or remove the orthotic according to the cooperation state between the foot and the orthotic and the fatigue degree of the foot during use. So, the upper part in front of the tongue of the shoe is made to be removable at any time, which better assists in adjusting the intervention of the toe separator on the foot, meets the needs of users to adjust the position and fit of the toe separator without taking off the shoes, and realizes the on - time and immediate adjustment of the toe separation type orthotic. The effective structures for relieving foot pain, besides the toe separator, are the medial longitudinal arch support structure and the cushioning insole. Hallux valgus in hallux valgus patients is often accompanied by flat feet caused by the collapse of the medial longitudinal arch, but flat foot symptoms may not necessarily appear. The foot pressure at the first metatarsal of this type of population is higher than that of normal people. Adding an arch pad and a metatarsal pad can improve the force - bearing capacity and elasticity of the arch, reduce the pressure and action time of the ground on the base of the first metatarsal, effectively relieve local foot pain, and improve the abnormal phenomenon of plantar pressure distribution.

[0026] In the present utility model, an adjustable cushioning arch pad 4 is fixedly arranged at the arch position of the insole 3. The adjustable cushioning arch pad 4 is formed by sewing a TPU composite fabric to form a receiving cavity, which is filled with high - resilience memory foam. The TPU composite fabric used refers to a fabric with a TPU coating provided on it, which can ensure good airtightness of the fabric.

[0027] The TPU composite fabric and the high - resilience memory foam are made into the adjustable cushioning arch pad 4, and it is sealed by hot pressing at high temperature. An air vent 7 is arranged at the outer side of the foot of the adjustable cushioning arch pad 4, and a through - hole 6 adapted to the air vent 7 is arranged on the shoe body 1. And an air nozzle is arranged at the air vent 7, and further, the air nozzle can be selected as a flip - type air nozzle.

[0028] To enable the adjustable cushioned arch support 4 to be stitched to the insole, a 0.5-cm sewing strip is left at the edge of the adjustable cushioned arch support 4. When the air nozzle is opened, air enters the adjustable cushioned arch support 4 to provide expansion space for the sponge. The user steps on the adjustable cushioned arch support 4 with the foot and presses it to a certain extent according to the comfort state of the foot, and then the shape and height of the arch support suitable for the user's foot can be obtained. Then, close the air nozzle to make it take shape. At this time, the user's arch and the adjustable cushioned arch support 4 reach a high degree of matching and fitting, so that the arch can be properly supported and cushioned, thereby relieving foot pain.

[0029] When the air inlet of the adjustable cushioned arch support 4 is opened, air enters the high-resilience memory sponge, which automatically inflates and expands. The user can step on the adjustable cushioned arch support 4 with different forces according to the size required by the foot. The high-resilience memory sponge will deflate through the air inlet according to the degree of sole extrusion, and closing the air nozzle will keep the state after the air cushion is extruded. The principle is similar to that of a compression bag. After the gas is pumped out, the compression bag squeezes the clothes and the volume becomes smaller; when the opening is opened and air enters the compression bag, there is storage space for the clothes and the volume becomes larger.

[0030] The design of the shoe and boot appearance is based on the Kano model theory, and a design method for the style theme of the shoe and boot is constructed. By means of questionnaire surveys, understand the design style requirements of young women's shoes and boots aged 18 to 35, and use the analysis methods of the "Better-Worse" coefficient and the influence coefficient to draw a scatter plot of the sensitivity matrix for different attribute design styles. Then, according to the analysis results, on the basis of the priority ranking of each demand attribute, combined with the influence coefficient, analyze the priority order of each style in the same demand attribute, transform the perceptual needs of the respondents into quantifiable data, and provide a basis for the design concept of the shoe and boot style for the targeted population, so that the shoe and boot design is more in line with the design style of the targeted population's demand tendency, realize the relative consistency between the style design of the shoe and boot and the needs of the targeted population, that is, the integration of the rationality and sensibility of the design, optimize the shoe and boot design method, guide the shoe and boot appearance design, and realize the improvement of the user satisfaction of the shoe and boot. See specifically Figure 2 。

[0031] The design of the shoe and boot appearance specifically includes the following steps: S1. Analysis of design style requirements: including analysis of the positioning of the design population and information research and collection.

[0032] In the above-mentioned design population positioning analysis, the selected population is young female patients with hallux valgus aged 18 to 35. The information research and collection include determining the design style theme and designing the Kano model questionnaire. Female patients with hallux valgus deformity are relatively common, with a male-to-female ratio of 1:9 to 15. Genetic factors, the influence of pregnancy in women, and women's shoe-wearing habits are the main reasons for the higher incidence of hallux valgus in women compared to men.

[0033] The Kano model is a design methodology for solving user satisfaction needs. It is an analysis model that can accurately reflect the relationship between product characteristics and user satisfaction. It is widely used in user requirement acquisition and analysis, can classify the attributes of user requirements, and rank the importance priority levels of different types of user requirements. According to the relationship between different types of quality characteristics and customer satisfaction, this model divides the quality characteristics of product services into five categories. Among these five categories of quality characteristics, there are three types: positive indicators, zero-sum indicators, and reverse indicators. See Table 1 for details.

[0034] Table 1 Kano Model Requirement Classification Table

[0035] The diversification of contemporary women's social identities determines the diversification of their emotional needs. By referring to existing competing products, magazines, and various trend websites for research, and through communication and learning with corporate shoe designers, the above-mentioned style theme words are screened and refined into the following 15 design style theme words: trendy street, sustainable, American retro, intellectual style, Maillard, self-pleasing and healing, urban outdoor, neutral style, future sense, wild beauty, millennium style, deconstructivism, casual commuting, national style art, simple personality.

[0036] The above-mentioned Kano model questionnaire design is based on the design style theme to design the Kano model questionnaire. The questionnaire forms are all asked in two aspects: positive and negative, such as "having a certain style element" and "not having a certain style element", and in each question, the views of the respondents are set as five dimensions: "like", "should be so", "doesn't matter", "can tolerate", and "dislike"; and the SPSS statistical data software is used to analyze the reliability of the positive and negative questionnaires on the demand intention of shoe design styles.

[0037] By looking for people in the appropriate age group through online and offline business districts and places with large pedestrian flows, and conducting research in the form of online questionnaires, a total of 151 questionnaires were collected, and 150 valid questionnaires were obtained.

[0038] Reliability, that is, the reliability and stability of the results obtained by the evaluation tool, can directly reflect the true degree of the evaluation results; while validity reflects the authenticity. The SPSS statistical data software was used to conduct a reliability analysis on 30 single-choice questions in the positive and negative questionnaires on the demand intention of shoe and boot design styles. The Cronbach alpha value of 151 questionnaires was 0.841 > 0.7, indicating good reliability. In addition, a validity analysis was conducted on 30 single-choice questions in the positive and negative intention questionnaires, and the Kaiser-Meyer-Olkin (KMO) value was 0.856 > 0.7. In summary, the reliability and validity of the questionnaire are good, indicating that the reliability of the questionnaire is high and the internal consistency of the questionnaire data is high.

[0039] S2. Style attribute classification: The collected questionnaire data was assigned values according to the Kano model result evaluation, and the style demand attributes were determined based on their highest frequencies. The Kano model result evaluation is shown in Table 2 below.

[0040] Table 2 Classification comparison table of Kano model evaluation results

[0041] Among them, M - Must-be requirement; O - One-dimensional requirement; A - Attractive requirement; I - Indifferent requirement; R - Reverse requirement; Q - Questionable requirement.

[0042] For the classified style demand attributes, the "Better-Worse" coefficient was used to analyze the sensitivity of users to single style demands and calculate the mean value. Among them, Better / SI is obtained according to formula (1), which refers to the satisfaction coefficient (0 - 1) of the user group when a certain style is provided. The closer the value is to 1, the greater the impact on the satisfaction of the user group; Worse / DSI is obtained according to formula (2), which refers to the dissatisfaction coefficient (-1 - 0) of the user group when a certain style is not provided. The closer the value is to -1, the greater the impact on the dissatisfaction of the user group.

[0043] Formula (1); Formula (2).

[0044] The calculated Better / SI and Worse / DSI are shown in Table 3.

[0045] Table 3 Style demand attributes and satisfaction table

[0046] S3. Style Attribute Priority Ranking: Substitute the satisfaction coefficient values of each style obtained in the previous step of analysis into the scatter plot of the sensitivity matrix with Better / |Worse| as the X / Y axis to clarify the quadrant to which each style requirement belongs. For example, Figure 3 as shown. The first quadrant belongs to the expected attributes. In its style requirements, both the overall Better and the absolute value of Worse are relatively high. Therefore, the styles in this quadrant have a greater impact on the satisfaction of shoe users and should be given priority consideration; the second quadrant belongs to the essential attributes. In the style requirements, the Better value is low while the absolute value of Worse is high, which are the basic attributes that shoe users think should be satisfied; the third quadrant belongs to the indifferent attributes. In the style requirements, both the absolute values of Better and Worse are relatively low and concentrated, having little impact on the satisfaction of shoe users; the fourth quadrant belongs to the attractive attributes. In the style requirements, the Better value is high while the absolute value of Worse is low. According to the Kano model theory, its priority ranking should be: M>O>A>I.

[0047] And calculate the influence coefficient EI of each style requirement to analyze the priority ranking within the same style; according to the Kano model theory, the priority ranking of attributes should be: M>O>A>I; The said influence coefficient EI is obtained according to formula (3); Formula (3); Based on the analysis method of "Better-Worse" and the influence coefficient for style requirements, obtain the classification of the required attributes of each style and the priority ranking of style requirements within the same attribute, as shown in Table 4.

[0048] Table 4 Priority Ranking Table

[0049] Based on the analysis method of "Better-Worse" and the influence coefficient for style requirements, obtain the classification of the required attributes of each style and the priority ranking of style requirements within the same attribute. Among them, ① Essential attributes (M): Casual Commuting (0.778) > Simple Personality (0.598); ② Expected attributes (O): Self-Pleasing and Healing (1.124) > American Retro (1.026) > Cool Street Style (1.026) > Deconstructivism (0.898) > Sustainability (0.863); ③ Attractive attributes (A): Maillard (0.917) > Chinese Style Art (0.827) > Y2K Style (0.758); ④ Indifferent attributes (I): Neutral Style (0.580) > Urban Outdoor (0.560) > Intellectual Style (0.552) > Wild Beauty (0.448) > Futuristic (0.419).

[0050] Step S4, Boot and shoe appearance design plan: Guide the boot and shoe appearance design according to the priority of style requirements within the same attribute obtained in the previous step.

[0051] Conduct research on the target population based on the Kano model, and classify the style requirements according to the surveyed data to obtain the priority ranking of the importance of style requirements. According to the above design method and its research results, guide the boot and shoe appearance design, so that the structural design and appearance design of the boots and shoes are closely combined with "people", and design practice is carried out around the physiological and psychological needs of the surveyed people, rather than relying solely on the designer's emotional preferences for boot and shoe design.

[0052] In the design reference, attractive requirements (A) can hit the pain points of the target population and greatly improve their satisfaction; the degree of fulfillment of one-dimensional requirements (O) is proportional to the satisfaction, with high fulfillment leading to increased satisfaction and low fulfillment resulting in low satisfaction; the fulfillment of must-be requirements (M) cannot achieve an increase in the satisfaction of the target population, but can greatly reduce their dissatisfaction. The boot and shoe appearance design will be based on the data analysis results of the Kano model, combined with the boot and shoe design, and refer to the priority ranking: must-be requirements > one-dimensional requirements > attractive requirements > indifferent requirements. Retain the must-be style requirements, selectively meet the one-dimensional requirements and attractive requirements, and determine the design strategy for the boot and shoe style theme accordingly: ① Set the must-be style requirement: casual, simple and yet distinctive as the overall tone of the boots and shoes; ② Make the one-dimensional requirements the easily perceivable elements of the boots and shoes: design the style theme; ③ Meet the attractive requirements through the colors of the boots and shoes. However, since the one-dimensional requirements and attractive requirements contain multiple indicators, select their priority important indicators for fulfillment.

[0053] In the above research results, ① it can be seen from the must-be style requirements that young women have certain requirements for a daily, simple and yet distinctive design style, which belongs to the basic style tone that should be met in the boot and shoe design of this article. Otherwise, it will significantly reduce their satisfaction with the boots and shoes; ② it can be known from the priority ranking of the one-dimensional style requirements that the sensitivities of self-pleasure and healing, American retro, and trendy street styles are all relatively high. The needs of users for such styles should be met as much as possible, which is conducive to significantly improving the satisfaction of boot and shoe users; ③ it can be known from the priority ranking of the attractive style requirements that the need sensitivity of Maillard is the highest, followed by Chinese style art and Y2K style. Meeting such style requirements can bring a sense of surprise and high satisfaction to boot and shoe users, but not meeting them will not reduce their satisfaction either. Therefore, the boot and shoe style theme plan is determined as: taking casual, simple and yet distinctive as the overall tone of the boots and shoes, and using the three style requirements of self-pleasure and healing, American retro, and trendy street as the theme design styles of the three pairs of boots and shoes.

[0054] Color can endow shoe design with strong emotional expression ability. Color aesthetics plays an extremely important role in the practicality, decoration, coordination, emotion, and popularity of shoe design. The design themes of the shoes are determined as: self-pleasing and healing, American retro, and trendy street. Therefore, when choosing the color scheme of the shoes, it is necessary to consider its fit and coordination with the overall style tone. The realization of charm needs can bring a sense of surprise to shoe users. Therefore, it is decided to choose the "Maillard" color scheme, which ranks first in priority among the charm attributes (A), as the color of the shoes.

[0055] "Maillard" originates from a chemical reaction, which is a common non-enzymatic browning reaction in the food industry, that is, the chemical substances in food gradually generate brown components from light to dark when heated. The brownish colors produced by the "Maillard reaction" have a natural, warm, and hierarchical transition, which has attracted the wide attention of designers and is applied to clothing. Through the change and transition of colors, the visual hierarchy of clothing is improved, making the design language more abundant and more suitable for the color trend code in autumn and winter. The advantage of the "Maillard color system" is that it is versatile in daily life. Whether it is intellectual elegance, simple commuting, or academic style, the atmosphere can be created through the color scheme of this color system. Thus, the "Maillard color scheme and dressing" trend has been set off in clothing.

[0056] The shoes in this article are portable application shoes for patients with hallux valgus. Therefore, the exterior design of the shoes starts from the functional structure design explored above: ① a detachable shoe upper for convenient placement and adjustment of the toe separator; ② an adjustable inner arch buffer air cushion. Therefore, the structures involved should be considered in the shoe exterior design: a detachable shoe upper and air vents left on the inner side of the shoe. Combining the design style preference results analyzed by the Kano model: ① self-pleasing and healing; ② American retro; ③ trendy street, the above three theme styles are combined with the "Maillard" color scheme for shoe design.

[0057] As a basic category of aesthetics, formal beauty is an abstract generalization of the characteristics and images of beautiful things by people. It is different from natural aesthetics and emphasizes the combination relationship of lines, colors, forms, characters, vocals, etc., or the beauty shown in works of art. The laws of formal beauty include: change and unity, symmetry and balance, rhythm and rhyme, and contrast and harmony, and points, lines, and surfaces are the basic elements that constitute formal beauty. In this article, the laws of formal beauty are applied to the design of the shoe exterior to enhance the overall beauty of the shoes.

[0058] The exterior designs of all three pairs of shoes retain the detachable structure of the shoe upper, and in the design, the detachable structure is naturally integrated with the shoe upper. Since there are external air vents left on the inner side of the shoes, it is convenient for users to adjust the buffering degree of the airbag at any time. Therefore, the two sides of the shoes are designed as open zipper shapes.

[0059] Example 1: Shoes with the theme style of self-pleasing and healing The user group portrait of those who choose the self-pleasing and healing style is as follows: ① gentle inside; ② attaching importance to the balance between work and life; ③ hoping to have a strong core to heal and self-heal; ④ lacking a sense of security; ⑤ paying more attention to the quality of life and the comfort of the environment.

[0060] The design of this style of shoes and boots uses soft curves as the main expression method, gentle yet powerful. Considering that this group may be office workers, students or housewives, in the selection of design elements, the core pursuit is a self-pleasing and healing lifestyle with a sense of relaxation, as well as a gentle and warm design style. A comfortable living environment, the balance between work and life, the visual and olfactory impacts brought by delicious food, and free sandstorms are used to create a self-pleasing and healing feeling in the design of shoes and boots through the collision of these elements. At the top of the shoes and boots, namely the eye protection piece, the detachable structure and the counter, the author regards them as "integrated", and the design element is delicious food, such as the softness and melting feeling of cream cakes and ice cream; the design element of the vamp of the shoes and boots is free sandstorms and a comfortable sofa; the front and rear vamps are wrapped towards the middle, conveying "a sense of security", and when the front and rear vamps are connected by a zipper and opened, it presents the softness inside the user group.

[0061] The design method of "rhythm and rhyme" in aesthetic forms can be applied not only to music works, but also to the visual perception design of spaces, etc., and can achieve the beauty of rhyme by using the changes in spatial rhythm. In the design of shoes and boots, in addition to the shaping lines, using the design method of "rhythm and rhyme" for elements such as materials, colors, processes, and textures can make the shoes and boots present a visually comfortable, coordinated and layered beauty.

[0062] In the shaping design, gradient designs are carried out on the arc, size and color of the eye protection piece and the detachable vamp of the shoes and boots, making it rise and fall like a musical melody, while the vamp is designed with soft curve lines, making the distance between the lines change rhythmically and echoing with the eye protection piece as Figure 4 ... In materials, the beauty of the texture of the material attracts people's attention and becomes a part of the decoration, referring to the texture pattern of the material itself and the formed pattern texture, etc. The selection of shoes and boots materials complements the simple and hierarchical design, echoing the rhythm and rhyme of the shoes and boots shaping. Therefore, the mutual matching of materials is also very important. The material selection of this style of shoes and boots is mainly soft and granular "lamb wool", large-grained "leather" and non-smooth and furry "nubuck", making the soft and strongly present "lamb wool" repeatedly appear in the vamp design of the shoes and boots, presenting a rhythm change and endowing the simply designed shoes and boots with rich layers.

[0063] Embodiment 2 American Retro-themed Shoes and Boots Its design is particular about: ① Clean, simple and tight lines; ② Geometric figures; ③ Radial elements; ④ In terms of color, it is based on natural textures, such as earth colors, log colors, and the shiny gold and silver colors that advocate the metal itself; ⑤ Few decorative embellishments, focusing on practicality. In recent years, American retro school style, American retro spicy girl style, American retro sweetie style and other American retro fashion trends have emerged. Combining American retro style with shoes and boots is a romantic retrospection of fashion trends while meeting the style needs of users. The popularity of retro style at present is determined by the periodicity of the fashion law itself. Premature factors may not conform to modern aesthetic tastes and lifestyles, while being too close to the current time node causes aesthetic fatigue due to frequent appearance. Therefore, "modern American style" with a certain time distance from now but not too early is chosen. Extraction of design elements for the appearance and shape of shoes and boots: Geometric figures and radial lines are the main design elements.

[0064] The design of shoes and boots mainly uses simple basic curves as the expression method, and pays attention to the practical materials used in the structure of shoes and boots. The author collages a design inspiration board according to the style theme words, the typical geometric checkerboard elements in this era background, the strong retro atmosphere under the color combination, the clock and chair back with a sense of radial line design, and the application of strong texture materials that focus on the natural sense. In the design method of "contrast and harmony" in aesthetic forms, that is, the effect produced by contrast makes the space show a distinct relationship of coexistence of coordination and complementarity, contradiction and unity. Contrast means forming a change with repeated or similar design elements beside it, but its elements and tonality are integrated with the overall design, have similar characteristics, and achieve an overall sense of coordination. In the design of shoes and boots, this design method emphasizes contrast in the local design changes of shoes and boots, but also pays attention to harmonizing the overall tonality unity and coordination of shoes and boots, so that the overall shoes and boots give people a sense of coordination visually and psychologically.

[0065] In the shape design, the wrapping structure of the heel and the supporting structure of the upper are arranged with geometric surfaces at different angles, making it like two inverted geometric shapes, presenting a sense of contrasting pull; at the same time, the geometry (triangle) formed by the zipper opening contrasts and echoes with the upper supporting and wrapping structure, making it both form a contrast and have an overall sense of harmony; at the same time, the overall design elements and directions of the shoe upper are consistent, so as to achieve the harmony of the overall tonality of the shoe and boot design. When choosing materials, "nubuck", "canvas" and geometric "cotton cloth" are selected, and gradient colors are used for matching to build the coordination sense of shoes and boots; when cutting the materials, most straight lines are retained, which is convenient for creating American retro geometric shapes through material collage to achieve a sense of contrast, and at the same time make the overall shape design of shoes and boots present a clean and tight sense of coordination.

[0066] Under the combined design of shape design and material selection, the overall design of shoes and boots presents a sense of order with local elements contrasting with each other, while the overall design is clean and has a consistent tonality, such as Figure 6The actual hallux valgus orthopedic shoe prepared in this embodiment is as shown in Figure 7 shown.

[0067] Example 3: Cool Street Theme Shoes and Boots The design of shoes and boots adopts three-dimensional decoration, with "tassels", "chains" and "heel loops" as the main display elements, forming dynamic and static levels under collision, such as the use of tassels, chains and heel loops to form a contrast with the overall static beauty. The author collages the design inspiration version based on the style theme words, street cordons, graffiti walls, skateboard venues, parkour stadiums, and street run-down shops. Extraction of design elements for the appearance of shoes and boots: chains, metals, cordons, and mottled and damaged feeling are the design elements.

[0068] Points, lines, and surfaces are the basic elements of formal beauty, and are also the basic elements of footwear design. When a "point" moves along a trajectory, it forms a "line", and when this "point" is large enough or multiple "points" converge, it will become a "surface", and multiple "lines" will also form a "surface". There is no clear boundary between these three elements. Among them, "line" plays a role of connecting the previous and the next in the modeling elements. It can continue the beauty of the "point", emphasize the direction, and guide the viewer's sight. Therefore, "line" has the function of dividing the overall space, expressing emotions delicately and flexibly. In footwear design, the "points, lines, and surfaces" are designed and applied in accordance with the laws of formal beauty, and dare to "break" the surface to make the spatial structure richer and the design more creative.

[0069] In the design, some materials are removed from the upper and three-dimensional decorations are added to break the integrity of the overall "surface" of the shoe, making it more spatial and layered; many metal buckle "point" designs are added to the upper and the overall effect to break the monotonous fabric collage and increase the coolness and fashion sense; and the tassels are stitched around the functional structures of the shoes and boots, or crossed with a sense of rhythm on the upper, echoing the "heel shoe loop", so the tassels and loops are similar to the concept of "line" in aesthetic theory, attracting visual attention and making the overall picture more harmonious. When choosing materials, "denim" is used in a large area, and denim fabrics of similar colors are selected for collage design, matched with tassel edges, to form a transitional and old-fashioned feeling. And use materials to explain "points, lines, and surfaces", chains, tassels wrapped around leather to create a "sense of line"; multiple iron buckles to create "points"; while "breaking" the surface, all elements are combined to form a "surface", making the overall design of shoes and boots coordinated and innovative.

[0070] Under the coordinated design of shape design and material selection, the overall design of the shoe presents a sense of "broken" but harmonious. The effect diagram of style three is shown in FIG8. The actual object of the hallux valgus orthopedic shoe prepared in this embodiment is as shown in FIG8. Figure 9 shown.

[0071] According to the Kano model, a needs survey was conducted on the targeted population. Then, the data was sorted out to calculate the classification of style needs, and the needs were prioritized. Based on this, the design of the shoe and boot appearance in this article was guided and conceptualized. The determined design plan is as follows: The overall tone of the shoes and boots is casual, simple, and yet personalized. The three style needs of self-pleasing and healing, American retro, and trendy street are used as the theme design styles for the three pairs of shoes and boots in this article. The "maillard" color system is applied as the main color for the three pairs of shoes and boots in this series. Under the combination of the definition of the design plan in this chapter and the structural design plan, the overall appearance design of the shoes and boots in this article is carried out according to the law of formal beauty. The research focuses on the combination of design theory and practice, analyzes and integrates the structural design and appearance design of the shoes and boots, obtains the structural design after the combination of effectiveness and feasibility, proposes a style theme design strategy that meets the user's needs, and explores a scientific design method for the structural design and appearance design of shoes and boots to design the overall shoes and boots.

[0072] A convenient structural design was carried out for the shoes and boots for young women with hallux valgus. Considering the different degrees of foot deformity and foot conditions, combined with the sorted experimental theoretical basis and the necessary test research of the design, the structural design idea and practice of the shoes and boots were carried out. In addition, the appearance design was carried out by researching the trendy theme trends that meet the style preference needs of shoes and boots in this age group, providing the overall satisfaction of the structural and appearance design of the shoes and boots. In the design exploration, subjectivity was avoided as much as possible, and it was insisted on starting from an objective perspective. The scientific theories and data explored were combined with the existing objective conditions to design the overall shoes and boots.

[0073] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention through logical analysis, reasoning, or limited experiments based on the concept of the present invention on the basis of the existing technology shall fall within the protection scope determined by the claims.

Claims

1. A method for designing shoes for young women with hallux valgus based on the Kano model, characterized in that: Including the design of shoe structure and the design of shoe appearance; The shoe structure comprises a shoe body (1) and a sole (2) which are fixedly connected to each other; an insole (3) is also arranged on the sole (2); an adjustable cushioning arch pad (4) is fixedly arranged at the arch position of the sole (3); and a detachable upper (5) is arranged on the shoe body (1); The design of the appearance of the shoe comprises the following steps: S1. Design style demand analysis: including design crowd positioning analysis and information research and collection; The population selected in the design population positioning analysis is young women with hallux valgus aged 18 to 35 years old; The information investigation and collection includes determining the design style theme and designing the Kano model questionnaire; The Kano model questionnaire design is based on the theme of design style. The questionnaire asks questions in both positive and negative aspects, such as "having certain style elements" and "not having certain style elements", and sets the opinions of the subjects in each question into five dimensions: "like", "should be so", "don't care", "tolerable" and "dislike". SPSS statistical data software is used to conduct reliability analysis on the positive and negative questionnaires on shoe design style demand intentions. S2. Style attribute classification: The collected questionnaire data is assigned values ​​according to the Kano model result evaluation, and the style demand attributes are determined according to their highest frequency; the Kano model result evaluation is shown in the following table: Among them, M-necessary needs; O-desired needs; A-attractive needs; I-indifferent needs; R-reverse needs; Q-questionable needs; The classified style demand attributes are analyzed using the "Better-Worse" coefficient to analyze the user's sensitivity to a single style demand and calculate the mean; where Better / SI is obtained according to formula (1); Worse / DSI is obtained according to formula (2); S3. Prioritization of style attributes: Substitute the satisfaction coefficient values ​​of each style obtained in the previous step into the sensitivity matrix scatter plot with Better / |Worse| as the X / Y axis to clarify the quadrant to which each style requirement belongs; and calculate the influence coefficient EI of each style requirement to analyze the priority ranking of the same style; according to the Kano model theory, the priority ranking of attributes should be: M>O>A>I; The influence coefficient EI is obtained according to formula (3); Combining the "Better-Worse" and influence coefficient analysis methods for style requirements, we can derive the classification of each style's demand attributes and the priority ranking of style requirements within the same attribute; Step S4, shoe appearance design plan: guide the shoe appearance design according to the priority of style requirements within the same attribute obtained in the previous step.

2. The method for designing shoes for young women with hallux valgus based on the Kano model according to claim 1, characterized in that: The adjustable cushioning arch pad (4) comprises a sealed accommodating cavity formed by a textile surface, and a high-resilience memory sponge filled in the sealed accommodating cavity.

3. The method for designing shoes for young women with hallux valgus based on the Kano model according to claim 1, characterized in that: The textile fabric is a TPU composite fabric.

4. The method for designing shoes for young women with hallux valgus based on the Kano model according to claim 1, characterized in that: The adjustable cushioning arch pad (4) is provided with a vent (7) at the outside of the foot; the shoe body (1) is provided with a through hole (6) adapted to the vent (7); and an air nozzle is installed at the position of the vent (7).

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