Shoes convenient to wear

Abstract

The invention relates to the technical field of shoemaking, and discloses a shoe convenient to wear, the shoe comprises an upper part, an insole part, a midsole part and a sole part, a shoe heel part comprises a heel part supporting assembly, the heel part supporting assembly comprises a shaping shell, the shaping shell extends backwards and upwards to form an extension part, the extension part is low in middle and high in outer edge, and the shoe heel part is connected with the shoe heel part. The side view longitudinal section extends backwards and upwards in a slightly arc shape, the horizontal width of the neck deformation part is smaller than the width of the heel of a human body, a shaping shell is arranged in the heel, the size of a foot entering space is enlarged, meanwhile, a resin material with elasticity and toughness is adopted, and the opening and closing function of the neck deformation part of the heel is achieved. Therefore, the problems that the shoes are easy to wear and the shoes are easy to fall off are solved, the ever-increasing requirements of people on the hand-free shoes are met, namely the shoes can be easily worn without the assistance of hands, and the shoes are not easy to fall off.

Description

Technical Field

[0001] The present invention relates to the technical field of shoe manufacturing, and specifically to a pair of shoes that is convenient to wear. Background Art

[0002] With the improvement of people's living standards, the demand for hands-free shoes is increasing continuously. Especially for the elderly, disabled people and people in special occupations, there is an urgent need for shoes that are easy to wear and convenient. They hope to have a pair of shoes that are convenient to put on and take off without relying on the assistance of hands.

[0003] Currently, various types of easy-to-wear products have emerged on the market, but there are some problems. For example, the appearance designs of some products are single, which easily leads to aesthetic fatigue and does not meet the long-term usage needs of consumers. In addition, the manufacturing process is complex and the cost is high, resulting in expensive selling prices, which is not conducive to popularizing among middle and low-income people.

[0004] Taking the application number 202290000225.5, Japanese Patent No. 7317385 as an example, although the existing easy-to-wear shoe products provide certain convenience, there are still many deficiencies. There is great room for improvement in terms of appearance design, manufacturing process and cost, especially in solving the problem of easy detachment of shoes. Therefore, it is necessary to propose new technical solutions to solve these problems and meet the growing needs of consumers.

[0005] The present invention aims to improve the problems of existing easy-to-wear shoes. Through innovative design and manufacturing processes, it provides an easy-to-wear shoe with novel appearance, easy production and reasonable cost, so as to meet the needs of the majority of consumers and contribute to its popularization among middle and low-income people. Summary of the Invention

[0006] The purpose of the present invention is to provide a pair of shoes that is convenient to wear, aiming to solve one of the problems existing in the prior art and processes.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A pair of shoes that is convenient to wear, including a shoe upper part composed of a shoe opening and the shoe middle part on the inner and outer sides of the shoe opening, the shoe front part before the shoe middle part, and the shoe back part after the shoe middle part, an insole part, a midsole part, and a sole part. These are the structures of general shoes and will not be described here again.

[0008] According to some embodiments of the present invention, the back part of the shoe includes a shaped shell formed by a mold.

[0009] Preferably, the overall appearance of the shaped shell is in the shape of a narrow upper part and wide lower part like a sub-waisted gourd or a chayote.

[0010] Specifically, the shaping shell extends backward and upward at the upper part to form an extension part. The extension part is a support for the upper part of the shoe heel counter, that is, the shoe heel counter also extends backward and upward, expanding the area of the shoe inlet (the shoe opening). It is advisable that the length ratio of the front part of the shoe before the shoe opening is expanded to the shoe toe and heel direction of the shoe opening is 3:2.

[0011] Specifically, the extension part is lower in the middle, higher at the outer edge, and its longitudinal cross-section in side view extends in a non-linear and slightly arc-shaped manner backward and upward. The extension part is a support for the upper part of the shoe heel counter, that is, the upper part of the shoe heel counter is also lower in the middle and higher at the outer edge. This design inspiration comes from the flat pot concave shape at the bottom of the heel, aiming to imitate the shape and size of the heel part, enabling the upper part of the shoe heel counter to better bear the pressure of the heel, so as to better support the heel, provide good stability, and offer a comfortable wearing experience. And the longitudinal cross-section in side view presents a slightly arc-shaped extension in the backward and upward direction, the purpose of which is to prevent an obvious feeling of pinching the foot when the heel steps on the upper part of the shoe heel counter. This design helps improve the wearing comfort and reduce discomfort to the feet.

[0012] Specifically, the lower part of the shaping shell is designed to be slightly hemispherical, aiming to imitate the natural shape of the human heel to achieve a closer accommodation and support. The hemispherical part is a support for the lower part of the shoe heel counter. This design inspiration comes from the shape of the heel, and its design enables the shoe heel counter to completely wrap the heel, effectively improving the stability and comfort of the shoe.

[0013] Specifically, there is a neck deformation part between the extension part and the semicircle of the above-mentioned shaping shell. The extension part is a support for the upper part of the shoe heel counter, that is, the upper and lower parts of the shoe heel counter have neck deformation. The main function of this design is to enable the heel to smoothly enter the shoe cavity during the shoe-wearing process, thereby increasing the wearing comfort and convenience. Through this design, the heel can smoothly slide into the shoe interior, avoiding friction or obstruction with the shoe heel counter, and improving the smoothness and comfort of putting on the shoes.

[0014] Specifically, the neck deformation part is a slightly V-shaped open arc structure that is wider at the front and narrower at the back. The horizontal width of the neck deformation part is smaller than the width of the human heel. In the side view, at least a part of the neck deformation part protrudes more in the shoe toe direction than the extension part and the hemispherical part. When wearing shoes normally, the neck deformation part with a horizontal width smaller than the width of the human heel and a protruding shape can better fix the heel, improve the wearing comfort and stability, and at the same time reduce the possibility of falling off. The horizontal width of the neck deformation part can also be smaller than the width of the extension part.

[0015] Preferably, the shaping shell includes a central positioning mark for positioning at the central position of the shoe heel counter. During the shoe-making process, the central positioning mark can be identified visually or by touch to accurately align the shaping shell with the central position of the shoe heel counter. Through this alignment, it is ensured that the shaping shell provides uniform support, avoiding deformation of the shoe heel counter and improving wearing comfort.

[0016] Preferably, a fine texture structure is formed on the surface of the shaping shell, which can increase the adhesion of the adhesive.

[0017] Preferably, the shaping shell is made of a polymer material such as a resin material or a plastic material with a certain support strength and resilient elasticity. When the external force exceeds its support strength, the shaping shell (1340) will deform, and when the external force is less than its support strength, the shaping shell will recover and maintain its original shape. In terms of material selection, it is recommended to choose high-elasticity new materials such as TPU (polyurethane), TPE (thermoplastic elastomer), or TPEE (thermoplastic polyester elastomer). These materials have good elasticity and toughness, can provide sufficient support force, and have the advantages of wear resistance, durability, and high temperature resistance. Therefore, choosing a shaping shell made of these high-elasticity new materials can effectively meet the structural requirements of the shoes while ensuring wearing comfort and durability.

[0018] Preferably, when the external force exceeds its support strength, the shaping shell will deform, and when the external force is less than its support strength or disappears, the shaping shell will recover and maintain its original shape. The shaping shell is a support for the shoe heel counter. When the upper end of the shoe heel counter is stepped on by the heel, when the extension part receives a downward stepping force, it will bend and deform backward and expand downward, increasing the foot entry space at the shoe opening so that the heel can enter the shoe cavity, and it can recover and maintain its original shape when the stepping force disappears.

[0019] Preferably, when the upper end of the shoe heel counter is stepped on by the heel, the neck deformation part inside the shoe heel counter will be stressed and deformed and expand outward. This deformation allows the heel to slide down along the extension part, easily pass through the expanded neck deformation part, and then smoothly slide into the hemispherical part to complete the shoe-wearing action. When the heel slides into the hemispherical part, the expansion force acting on the neck deformation will disappear instantly, and at the same time, the neck deformation part will instantly return to its original shape due to the resilience. This design enables the neck deformation part to hold the heel and makes it not easy to pull out, thus achieving the effect that the shoe heel is not easy to fall off. This structural design not only ensures the wearing comfort of the shoes but also enhances the fixation of the shoe heel, bringing a better user experience to the wearer.

[0020] Preferably, the shaping shell is installed on the back part of the shoe, between the upper material and the lining material. The installation method is simple and similar to the traditional method of installing a hot melt sheet or a stiffener. To prevent the shaping shell from shifting between the upper material and the lining material, it is recommended to apply a small amount of glue during installation for fixed pasting. The upper material can be selected from animal leather, synthetic leather, artificial leather, textiles, knitted fabrics, etc. According to the needs of the wearing environment, a filler can be laminated on the back. Aesthetic, fashionable and practical principles should be considered in the design. The lining material is preferably a soft and wear-resistant material, such as knitted fabric. A foamed or non-foamed soft and elastic material, such as sponge or light EVA, can be laminated on the back of the lining material to improve the wearing comfort of the foot. Through such a design, the shoes can be both comfortable and meet the requirements of aesthetics and fashion, thus enhancing the wearer's experience.

[0021] Preferably, the shaping shell has several fixing parts at the lower part, and these fixing parts play a key role in the shoe lasting process. The shoe lasting process is a shoe-making process in which the material between the vamp (the lower part of the shoe upper) and the midsole (a layer on top of the sole) is bonded to fix the shoe upper and the midsole. In this process, the fixing parts are pulled under the midsole, and then the sole is pasted and fixed. The fixing parts are an integral part of the whole shaping shell, and the shaping shell itself is a support for the back part of the shoe. When the fixing parts are pulled and fixed together between the midsole and the sole, the back part of the shoe body, the midsole and the sole form a whole, which effectively strengthens the back part of the shoe and the whole shoe structure. This design not only improves the durability and stability of the shoes, but also helps to extend the service life of the shoes.

[0022] Preferably, the shaping shell plays an important role in the shoe closing process. In this process, the connecting stitches between the upper part of the back part of the shoe and the midsole part form a sandwich structure between the upper material and the lining material, and the shaping shell is located between this sandwich. In practice, the vamp of the back part of the shoe needs to be lengthened by about the length of the fixing parts, and at the same time, the corresponding part of the midsole at the back end needs to be shortened by about the length of the fixing parts. In this way, the lengthened part of the vamp will be subjected to the reduced pulling force of the midsole after last closing, so as to pull a part of the vamp (the fixing part hiding the shaping shell) to the bottom of the last. This method can strengthen the overall structure of the vamp and the sole to a greater extent. The midsole material in the shoe closing process is usually a cloth-like material with less elasticity, such as textiles or non-woven fabrics. As a support for the back part of the shoe, the shaping shell is sandwiched in the back part of the shoe and sewn together with the midsole part, and then fixed on the sole with glue. In this way, the back part of the shoe body, the midsole part and the sole of the shoe form an integral structure, effectively strengthening the back part of the shoe and the whole shoe body. This design improves the stability and durability of the shoes, helps to extend the service life of the shoes, and provides a better wearing experience.

[0023] Preferably, by providing several notch portions at the lower base of the hemispherical portion, a contraction space can be created, enabling the shaping shell to more easily adapt the hemispherical portion to the shape of the heel portion of the shoe last or the bottom mold during the shoe-making process through the contraction force. In addition, by making the thickness below the horizontal line of the vertex of the notch portion slightly thinner than other parts, the lower base portion of the hemispherical portion can be more easily deformed, thus better adapting to the shape of the shoe last or the bottom mold. This improved technology not only enhances the adaptability of the hemispherical portion but also improves the final quality of the footwear product.

[0024] Preferably, the shaping shell can be integrally formed by injection molding with a chromium-nickel-molybdenum metal mold. Using chromium-nickel-molybdenum alloy die steel to make the mold enables the mold to have high durability and stability, ensuring the accuracy and consistency of the product during the manufacturing process. The integral molding of the mold makes the production of the shaping shell more efficient, capable of meeting the requirements of mass production, thereby reducing the shoe-making cost. This manufacturing process indirectly reduces the retail price of the shoes, facilitating their popularization among middle- and low-income groups. In addition, the mold made of chromium-nickel-molybdenum alloy die steel has the characteristics of being not easily damaged, not easily aging, and not easily deformed, with a long service life, thus saving maintenance costs. This means that the mold does not need to be frequently replaced or maintained during the production process, further reducing the production cost.

[0025] Preferably, the insole portion is mainly manufactured by processes such as polyethylene foaming, EVA foaming, and EVA cold pressing to achieve good resilience and a comfortable foot feel. The insoles made of these materials, especially the foot cup-shaped removable insoles, can effectively wrap and support the feet, providing additional comfort and stability. In daily life, this design allows the insole to be easily taken out for cleaning and maintenance, keeping the inside of the shoe clean and hygienic. By regularly cleaning the insole, odors and stains can be effectively removed, extending the service life of the shoes and ensuring comfort during wearing.

[0026] Preferably, the sole can be made of various materials according to the needs of the wearing environment conditions, including rubber, TPR (thermoplastic rubber), EVA (ethylene vinyl acetate), PVC (polyvinyl chloride), rubber foam, polyethylene, etc. In recent years, with the rise of the fitness and sports craze, it is recommended to use lightweight sole materials with anti-slip, wear-resistant, and flex-resistant characteristics. Among them, materials such as EVA, secondary MD (double density), and PVC inflation have good anti-slip performance, wear resistance, and lightweight characteristics, suitable for the production of sports shoe soles. These materials can not only provide good grip and stability but also effectively reduce the weight of the shoes, improve wearing comfort, and have good durability, suitable for long-term sports and activities. Therefore, when choosing the sole material, it is recommended to use lightweight materials with anti-slip, wear-resistant, and flex-resistant characteristics according to the wearing environment and usage requirements to ensure the best balance of the performance and comfort of the shoes.

[0027] Preferably, the shaping shell is suitable for a variety of manufacturing processes, including but not limited to: gluing process, sewing process, molding process, injection molding process, vulcanization process, Goodyear process, and wrapping process. These manufacturing processes can be selected according to the characteristics of the material, the availability of production equipment, and the production requirements to ensure that the shaping shell can be effectively fixed on the back of the shoe and has the required performance and stability.

[0028] Preferably, the edge of the shaping shell is covered with a filling material, and the filling material extends from the bottom of the Achilles tendon of the foot to the bare tube to prevent the foot from resting. The filling material can be a soft material such as sponge that absorbs impact to improve the comfort of the foot contact.

[0029] Compared with the prior art, the present invention provides a pair of shoes that are easy to wear and have the following beneficial effects.

[0030] The open-toed, easy-to-wear shoes have a molded shell built into the heel to effectively expand the size of the foot entrance, and use a resin material with elasticity and toughness to achieve the opening and closing function of the heel, thereby solving the problems of easy wearing and the heel problem.

[0031] When wearing shoes, when the front end of a human foot is inserted into the shoe and the heel is stepped down, the extension portion of the molding shell is bent backward and downward by the downward stepping force, thereby increasing the foot entry diameter of the shoe mouth, and at the same time, the neck deformation portion will deform and expand, and the heel will be squeezed into the shoe cavity; at the moment the heel enters the shoe cavity, the neck deformation portion will quickly return to its original shape, and the shoe back will also return to its original shape at the same time, clamping the heel and preventing the heel from falling off easily.

[0032] When taking off the shoes, when the heel is lifted up, the neck deformation part is deformed and expanded by the squeezing force of the heel, so that the heel is separated from the shoe back.

[0033] The design of the invention meets the growing demand for hands-free shoes, that is, shoes that can be easily put on without the help of hands. This is especially important for some elderly people, disabled people and people in special occupations, helping them realize their desire to easily put on shoes without the help of hands.

[0034] Through the present invention, users can wear shoes more easily without relying on external assistance, which is of great significance to the convenience and autonomy of daily life. The design features of the present invention make it widely applicable, can meet the needs of different groups of people, and improve the comfort and practicality of shoes.

[0035] 2. The open-top shoes are easy to wear, and a molded shell is used, and the shell is made of a resin material with certain support strength and toughness and elasticity. The use of this material reduces the cost of shoemaking and effectively solves the cost problem of easy-to-wear shoes.

[0036] The method of installing the molded shell is simple, similar to the traditional hot melt or port method, so it is easy to implement and can be completed quickly on the production line.

[0037] The molded shell is manufactured by one-piece injection molding, which is suitable for large-scale production, reduces the cost of shoemaking, and indirectly reduces the retail price of shoes, making them more suitable for middle- and low-income people.

[0038] Metal molds are durable, not easy to damage, not easy to age and not easy to deform, thus saving maintenance costs, while extending service life and further reducing production costs.

[0039] The creativity of the present invention is not only reflected in the uniqueness of its technical features, but also verified by the positive feedback from customers at international exhibitions and subsequent orders. At international exhibitions, many customers said that the existing technical solutions could not meet their actual needs, especially in terms of product functionality and ease of use. However, the present invention successfully solved these problems with its innovative design and improvement, and was highly recognized by customers. After the exhibition, many customers quickly placed orders and put forward specific customization requirements, which further demonstrated that the market demand for the present invention is real and urgent. The customer's customization requirements not only highlight the technical advantages of the present invention, but also prove that these technical features are not easy to think of by practitioners in this industry, but are innovative solutions verified by the market. Therefore, while solving the problems of the prior art, the present invention also provides customers with significant practical value, reflecting its significant non-obviousness. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0041] Figure 1 A side view of a shoe that is easy to wear provided by an embodiment of the present invention.

[0042] Figure 2 A rear upper left view of a shoe that is easy to wear according to an embodiment of the present invention.

[0043] Figure 3 The central vertical cross-sectional view of the back upper of a shoe that is easy to wear provided by an embodiment of the present invention. a is a structural schematic diagram of the upper method, and b is a structural schematic diagram of the pull-up method.

[0044] Figure 4 Stereogram of the built-in shaping shell in the heel counter of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear.

[0045] Figure 5 Schematic diagram of the force received by the built-in shaping shell in the heel counter of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear, when being stepped on.

[0046] Figure 6 Rear view of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear.

[0047] Figure 7 Top view from the upper front of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear.

[0048] Figure 8 Top view from the upper left front of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear.

[0049] Figure 9 Rear left upward perspective view of the method of pulling the upper of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear.

[0050] Figure 10 Rear left upward perspective view of the method of covering the upper of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear. The dotted line represents the contour of the shaping shell, and one dot and one horizontal line represent the sewing line between the upper and the midsole.

[0051] Figure 11 Stereogram of the physical object of the built-in shaping shell of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear.

[0052] Figure 12 Horizontal sectional view of the neck deformation part of the built-in shaping shell of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear.

[0053] Figure 13 Schematic diagram of a pair of shoes with other methods of assembling the built-in shaping shell provided by an embodiment of the present invention, which is convenient to wear.

[0054] Figure 14 Schematic diagram of the mold of the built-in shaping shell of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear.

[0055] Figure 15 Schematic diagram of the built-in shaping shell independently assembled and then installed on the inner side of the heel counter of a pair of shoes provided by an embodiment of the present invention, which is convenient to wear.

[0056] In the figure: shoe 1; upper part 10; vamp material 11; lining material 12; filling material 13; insole 20; midsole 30; outsole 40; shoe opening 100; middle part of the upper 110; front part of the upper 120; rear part of the upper 130; rear part support component 140; upper end part of the rear part of the upper 131; upper middle part of the rear part of the upper 132; lower end part of the rear part of the upper 133; shaping shell 1340; extension part 1341; neck deformation part 1342; hemispherical part 1343; fixing part 1344; notch part 1345. Detailed implementation mode

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0058] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] The following will be combined with Figures 1 - 12 to illustrate the embodiments of the present invention.

[0060] Embodiment 1, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 11 , the embodiment of the present invention provides a pair of shoes that are easy to wear, including an upper part 10 composed of a shoe opening 100, a middle part of the upper 110 inside and outside the shoe opening 100, a front part of the upper 120 before the middle part of the upper 110, and a rear part of the upper 130 after the middle part of the upper 110, an insole part 20, a midsole 30, and an outsole 40. Among them, the rear part of the upper 130 is composed of a vamp material 11 and a filling material 13, a lining material 12 and a filling material 13, a rear part support component 140 sandwiched in the middle, and a shaping shell 1340 whose overall appearance in a rear view is in a shape that is narrow at the top and wide at the bottom like a sub-waisted gourd or a chayote.

[0061] Specifically, the upper part of the shaping shell 1340 extends backward and upward to form an extension part 1341. The lower part of the shaping shell 1340 is a hemispherical part 1343 that imitates the shape of the heel. There is a neck deformation part 1342 between the extension part 1341 and the hemispherical part 1343.

[0062] Specifically, the shaping shell 1340 corresponds to each part of the shoe counter 130. Among them, the extension part of the shaping shell corresponds to the upper end part 131 of the rear shoe counter, the neck deformation part of the shaping shell corresponds to the upper-middle part 132 of the shoe counter, and the hemispherical part 1343 of the shaping shell corresponds to the lower end part 133 of the shoe counter.

[0063] In this embodiment, the shoe counter 130 includes a shaping shell 1340 integrally formed by injection molding with a metal mold 1350. The metal mold can be made of P20 mold steel or 738H mold steel which is more durable and corrosion-resistant than it. P20 mold steel and 738H mold steel contain metal components such as chromium, nickel, and molybdenum, which can improve the toughness, hardenability, and corrosion resistance of the steel, making the mold 1350 have high durability and stability, and can ensure the accuracy and consistency of the product during the manufacturing process. See Figure 14 , the mold 1350 is designed with four parts in one mold and integrally formed, making the production of the shaping shell 1340 more efficient, capable of meeting the needs of mass production, thereby reducing the shoe manufacturing cost. This manufacturing process indirectly reduces the retail price of the shoes 1, which is beneficial for popularizing to the middle and low-income groups. In addition, the mold 1350 made of chromium-nickel alloy mold steel has the characteristics of not being easily damaged, not being easily aged, and not being easily deformed, with a long service life, thus saving maintenance costs. This means that the mold does not need to be frequently replaced or maintained during the production process, further reducing the production cost.

[0064] In this embodiment, see Figure 1 , Figure 7 , Figure 8 , Figure 11 , the upper part of the shaping shell 1340 extends backward and upward to form an extension part 1341. The extension part 1341 is the support body of the upper end part 131 of the shoe counter, that is, the shoe counter 130 also extends backward and upward, expanding the space of the foot entry opening (shoe mouth 100) of the shoes 1. It is appropriate that the length ratio of the front part to the shoe head and heel direction of the shoe mouth 100 before expansion is 3:2. This embodiment proves that the extension part 1341 enlarging the shoe mouth is one of the best solutions to solve the problem of easy foot entry.

[0065] In this embodiment, see Figure 3 , Figure 4, the extension part 1341 is lower in the middle and higher at the outer edge, and its longitudinal cross-section in side view extends in a slightly arc shape backward and upward. The extension part is a support for the upper part 131 of the shoe heel counter, that is, the upper part of the shoe heel counter 130 is also lower in the middle and higher at the outer edge. This design inspiration comes from the flat pot concave shape at the bottom of the heel, aiming to imitate the shape and size of the heel part, so that the upper part 131 of the shoe heel counter can better bear the pressure of the heel, better support the heel, provide good stability, and provide a comfortable wearing experience. And the longitudinal cross-section in side view shows a slightly arc-shaped extension in the backward and upward direction. The purpose of this implementation scheme is to make the heel not have an obvious feeling of rubbing against the upper part of the shoe heel counter when stepping on it. This design helps to improve the wearing comfort and reduce the discomfort to the foot.

[0066] In this implementation scheme, see Figure 3 , Figure 4 , the shaping shell 1340, the lower hemispherical part 1343 is designed to be slightly hemispherical, aiming to imitate the natural shape of the human heel to achieve a closer accommodation and support. The hemispherical part 1343 is a support for the lower part 133 of the shoe heel counter. This design inspiration comes from the shape of the heel. Its design enables the shoe heel counter to completely wrap the heel, effectively improving the stability and comfort of the shoe.

[0067] In this implementation scheme, see Figure 1 , Figure 2 , Figure 6 , there is a neck deformation part 1342 between the extension part 1341 and the semi-circular shape of the above-mentioned shaping shell 1340. The extension part 1341 is a support for the upper part 131 of the shoe heel counter, that is, the upper and lower parts of the shoe heel counter 130 have neck deformation. The main function of its design is to enable the heel to smoothly enter the shoe cavity during the process of putting on the shoes, thereby increasing the wearing comfort and convenience. Through this design, the heel can smoothly slide into the shoe interior, avoiding friction or obstruction with the shoe heel counter 130, and improving the smoothness and comfort of putting on the shoes.

[0068] In this implementation scheme, the neck deformation part 1342 is an open arc structure, and the horizontal width of the neck deformation part 1342 is smaller than the width of the human heel. In the side view, at least a part of the neck deformation part 1342 protrudes more in the toe direction than the extension part 1341 and the hemispherical part 1343. In the longitudinal cross-section of the inner part of the shoe in the central vertical direction of the shoe heel counter, a convex structure is formed from back to front. When wearing the shoes normally, the neck deformation part 1342 with a width smaller than the human heel and a protruding shape will hold the heel. Through this design, the shoe 1 can better fix the heel during the wearing process, improving the wearing comfort and stability, and at the same time reducing the possibility of falling off.

[0069] In some other embodiments, depending on the style of the shoe and the size of the subject's heel, the size of the V-shaped opening of the neck deformation portion 1342 may be slightly narrower than the extension portion. This width is sufficient to allow the heel to pass through when expanded and to hold the heel when restored to its original shape.

[0070] In this embodiment, the shaping shell 1340 is made of a polymer material such as a resin or a plastic material with a certain support strength and toughness. In terms of material selection, it is recommended to use high-elasticity new materials such as TPU (polyurethane), TPE (thermoplastic elastomer) or TPEE (thermoplastic polyester elastomer). These materials have good elasticity and toughness, can provide sufficient support strength, and have the advantages of wear resistance, durability, and high temperature resistance. Therefore, the shaping shell made of these high-elasticity new materials can effectively meet the structural requirements of the shoe 1 while ensuring wearing comfort and durability.

[0071] In this embodiment, see Figure 5 , Figure 12 When the extension part 1341 is subjected to the downward pedaling force, it bends backward and downward, so that the space for the foot to enter the shoe mouth is increased. In the process of the human foot entering the shoe, the protruding heel is difficult to enter the shoe cavity, which is a major problem. The deformation mode of the heel cup expanding to the left and right in the application number 202290000225.5 plays a minimal role in solving this problem. The design of the shaping shell expanding backward in this embodiment can more effectively adapt to the shape and movement of the heel, provide more ample space for the heel to enter the shoe cavity, and enable it to enter more smoothly. This backward expansion technology is closely related to solving the problem of the heel entering the shoe cavity, and has stronger pertinence and effectiveness. When the external force is less than its supporting strength, the extension part 1341 will restore and maintain its original shape, and the shaping shell 1340 is the support body of the shoe rear upper 130, that is, the shoe rear upper 130 restores and maintains its original shape.

[0072] In this embodiment, see Figure 5 , Figure 12 When the upper end of the shoe upper 130 is stepped on by the heel, the internal neck deformation part 1342 will be deformed and expand outward due to the stress. This deformation allows the heel to slide down along the extension part 1341, easily pass through the expanded neck deformation part 1342, and then smoothly slide into the hemispherical part 1343 to complete the shoe-wearing action. When the heel slides into the hemispherical part 1343, the expansion force acting on the neck deformation part 1342 will disappear instantly, and the neck deformation part will also instantly return to its original shape due to the rebound force. This design allows the neck deformation part 1342 to clamp the heel, making it difficult to pull out, thereby achieving the effect that the shoe upper 130 is not easy to fall off. This opening and closing function feature design of the neck deformation part not only ensures the wearability of the shoe, but also enhances the effect that the heel of the shoe is not easy to fall off, bringing a better user experience to the wearer.

[0073] In the present embodiment, when the subject puts on the shoe, when the front end of the human foot is inserted into the shoe and the heel steps downward, the extension portion 1341 of the molding shell is subjected to the downward stepping force and bends downward successively, thereby increasing the space for the foot to enter the shoe opening, and at the same time, the neck deformation portion 1342 is deformed and expanded due to the stress, and the heel will slide into the shoe cavity; when the heel enters the shoe cavity, the neck deformation portion 1342 will quickly return to its original shape and the shoe back 130 will also return to its original shape to clamp the heel, making it difficult for the heel to fall off; when taking off the shoe, when the heel applies force toward the shoe opening, the heel will stretch the neck deformation portion to make the heel fall off from the heel part of the shoe.

[0074] In this embodiment, the thickness of the shaping shell 1340 is uniform, and the edges are chamfered from the inside to the outside near the edge. This design is intended to improve the strength of the shaping shell while making the surface of the shoe body smooth and flat without obvious contours, and the user will not feel a noticeable footrest when wearing it.

[0075] In the present embodiment, the shaping shell 1340 includes a center positioning mark aligned with the center position of the shoe upper, and the center positioning mark is a concave or convex geometric shape mark. In the shoemaking process, the center positioning mark can be visually or tactilely identified, and the shaping shell can be accurately aligned with the center position of the shoe upper. The positioning mark is located in the center of the shaping shell, and a convex or concave geometric shape structure is used to form an obvious positioning mark. The shape of the mark is circular or linear, the diameter can be 1 mm, and the height or depth can be 0.5 mm, so that it can be identified without resting the foot. The center positioning mark is not recorded in the current patent technology documents in this industry, especially in the field of easy-to-put-on and easy-to-take-off technology. Through this alignment, it is ensured that the shaping shell provides uniform support, avoids deformation of the shoe upper, and improves wearing comfort.

[0076] In this embodiment, see Figure 3, the shaping shell 1340 is installed inside the heel support component 140 between the vamp material 11 and the lining material 12 of the heel part 130 of the shoe. The heel support component 140 includes a filling material and the shaping shell 1340. The installation method is simple and similar to the traditional method of installing a hot melt sheet or a stiffener. To prevent the shaping shell 1340 from shifting and moving between the vamp material 11 and the lining material 12, it is recommended to apply a small amount of glue during installation to fix and paste it. The filling material can be selected from soft materials with impact absorption properties such as sponge, etc. In this embodiment, the sponge with a thickness of 1.0 to 2.0 cm is used. The edge of the shaping shell is covered by the filling material, and the filling material extends beyond the bare tube part from the bottom of the Achilles tendon of the foot to prevent pinching the foot. The vamp material 11 can be selected from animal leather, synthetic leather, artificial leather, textiles, knitted fabrics, etc. According to the needs of the wearing environment conditions, a filler can be laminated on the back. When designing, the principles of beauty, fashion and practicality should be considered. The lining material 12 is preferably a soft and wear-resistant material, such as knitted fabric. A foamed or non-foamed soft and elastic material, such as sponge, light EVA, etc., can be laminated on the back of the lining material 12 to improve the wearing comfort of the foot. Through such a design, the shoe 1 can not only have comfort, but also meet the requirements of beauty and fashion, thus enhancing the wearing experience of the wearer.

[0077] In this embodiment, the surface of the preliminarily formed shaping shell is usually relatively smooth, which is not conducive to the adhesion of the adhesive. To enhance the adhesion of the adhesive, it is necessary to apply fine textures to the surface of the shaping shell. After adding a texture structure to the inner surface of the mold, the shaping shell will replicate the tiny textures on the surface of the mold, thus forming a fine texture structure. The depth of these textures should not exceed 0.5 mm, and the forms can be linear, reticular, dot-shaped, frosted, roughened, wavy, spotted, concave-convex, spiral or granular, etc. These textures are distributed on the surface of the shaping shell, and by increasing the contact area and friction, the adhesion performance of the adhesive is significantly improved. The design of this texture structure is not recorded in the current patent technical literature in this industry, especially in the field of easy-on-and-off technology. This design is significantly different from the smooth surface in the prior art and provides a better adhesion effect. The textures on the inner surface of the mold can use high-precision CNC machining technology, or chemical etching or laser etching technology to ensure that the depth and shape of the textures meet the design requirements.

[0078] In this embodiment, refer to Figure 9, the shaping shell 1340 has several fixing parts 1344 at the lower part, which are slightly thinner than the hemispherical part and are easy to bend. These fixing parts 1344 play a key role in the shoe-making method of pulling the upper. The shoe-making method of pulling the upper is a shoe-making process in which the material between the vamp (the lower part of the shoe upper) and the midsole 30 (a layer on the sole) is bonded to fix the shoe upper and the midsole. In this process, the fixing part 1344 will be pulled under the midsole 30 of the last bottom, and then the sole is pasted and fixed. The fixing part 1344 is an integral part of the whole shaping shell 1340, and the shaping shell 1340 itself is a support for the rear part of the shoe upper 130. When the fixing part 1344 is pulled in and fixed between the midsole and the sole together, the rear part of the shoe upper 130, the midsole 30 and the sole 40 of the shoe body form an integral whole, which effectively strengthens the rear part of the shoe upper 130 and the whole shoe body structure. The extension part 1341 and the neck deformation part 1342 of the shaping shell 1340 can be deformed by force. Since the fixing part 1344 is fixed to the sole, the hemispherical part 1343 is effectively fixed. Therefore, when the shaping shell 1340 is stressed, the hemispherical part 1343 hardly deforms. This design not only improves the durability and stability of the shoe 1, but also helps to extend the service life of the shoe 1. The design of the fixing part is the first in the field of easy-to-wear and take-off technology, and solves the important problem that the shaping shell of the prior art is unstable and easy to displace in the shoe body structure.

[0079] According to other embodiments of the present invention, see Figure 10 , the fixing part 1344 plays an important role in the shoe-making method of covering the upper. In this method, the connecting stitches between the shoe upper part 10 of the rear part of the shoe upper 130 and the midsole 30 form a sandwich structure between the upper material 11 and the lining material 12, and the shaping shell (1340) is located between this sandwich. The vamp of the shoe upper part 10 needs to be lengthened by about the length of the fixing part 1344, and at the same time, the rear end of the midsole 30 corresponding to the rear part of the shoe upper 130 needs to be shortened by about the length of the fixing part 1344. In this way, the lengthened vamp part after last covering will be pulled by the shortened midsole 30, so as to pull a part of the vamp (the fixing part 1344 hiding the shaping shell) to the bottom of the last. This method can strengthen the overall structure of the shoe upper part 10 and the sole 40 to a greater extent.

[0080] The material of the midsole 30 (midsole cloth) in the shoe-making method of covering the upper is usually cloth-like materials with less elasticity such as textiles or non-woven fabrics. As a support for the rear part of the shoe upper 130, the shaping shell 1340 is sewn together with the upper 10 and the midsole 30 (midsole cloth), and then fixed to the sole 40 with glue. In this way, the rear part of the shoe upper 130, the midsole 30 (midsole cloth) and the sole 40 of the shoe body form an integral structure, effectively strengthening the rear part of the shoe upper 130 and the whole shoe body. This design improves the stability and durability of the shoe 1, helps to extend the service life of the shoe 1, and provides a better wearing experience. Figure 10In this case, one dot and one horizontal line represent the sewing thread.

[0081] According to some other embodiments of the present invention, the heel part of the last is carved into a designed shape, and the hot-melt adhesive composite sheet (if using the composite sheet made of cap toe, it needs to be soaked with solvent) is assembled in the upper part 10, heated after being fixed on the last, so that the hot-melt adhesive composite sheet becomes soft and closely fits the last head when heated, and then put into a cold setting machine for low-temperature setting (if using the composite sheet made of cap toe, the solvent needs to be completely dried). Since the upper part of the setting shell 1340 is often stepped on by the foot, it is better to use a material with higher strength and better elasticity, such as resin material, instead. This material can be connected to the lower composite sheet by sewing or gluing methods. In order to adapt to the foot feeling and make its strength and elasticity play better, it can be designed into a shape with a thick middle and thin edges.

[0082] In the specific shoe-making operation, the composite sheet can be sandwiched between the upper material 11 and the lining material 12 of the shoe back 130, or wrapped with elastic tissue and installed on the inner side in the direction of the shoe mouth of the shoe back 130. In addition, according to the use and style requirements of the shoes, the thickness of the hot-melt adhesive composite sheet or the composite sheet made of cap toe can be adjusted, and the number of sheets can be increased or decreased to achieve the purpose that the user can easily put on and take off the shoes and the shoes fit well.

[0083] The shape of the composite sheet type setting shell is similar to that of the setting shell in the above-mentioned embodiments of the present invention, and it can also achieve the effect of easy putting on and taking off. It is suitable for shoes with small single quantity, no forming mold, and not too high requirements for the overall performance of the setting shell. The disadvantage is that the hot-melt sheet in it is easy to break under external force and easy to deform at high temperature, and the advantage is that it can perfectly fit the existing last and mold. In order to make the extension part 1341 and the neck deformation part 1342 easy to deform and extend the service life, a material with better supporting force and elasticity can be used instead. Which specific setting shell to choose needs to be selected according to the customer order requirements. All those that can achieve the effect of easy wearing described in the claims of the present invention belong to the protection scope of the present invention.

[0084] According to some other embodiments of the present invention, a plurality of notch portions are provided at the lower bottom of the hemispherical portion, which can create a shrinking space, enabling the shaping shell to more easily adapt the hemispherical portion to the shape of the heel portion of the last or the sole mold during the shoe-making process through the shrinking force. The shape, size, and position of these notch portions are designed to improve the fitting degree between the shaping shell and the wearer's heel portion, enhancing the wearing comfort. In addition, by making the thickness below the horizontal line of the vertex of the notch portion slightly thinner than other parts, the lower bottom portion of the hemispherical portion can be more easily bent and deformed, thus better adapting to the shape of the last or the sole mold. Especially in the field of injection-molded shoes, many shoe styles cannot produce the last and the sole mold separately. Instead, existing lasts and sole molds are often used, and it is generally difficult for the shaping shell to match them. In this embodiment, after adding notches to the shaping shell, the bottom of the hemispherical portion can expand or contract using the space of the notches to adapt to the shape of the existing last and the heel portion of the mold, making it more conforming to the last, and reducing the occurrence of material leakage and non-conformity with the last during operation. This improved technology not only improves the adaptability of the hemispherical portion but also enhances the final quality of the footwear product.

[0085] According to some embodiments of the present invention, the shaping shell includes multiple specifications, and each specification corresponds to at least one shoe size. When a shaping shell corresponds to several shoe sizes, to prevent uneven appearance and internal quality caused by loose or tight wrapping of the shoe counter around the shaping shell, when grading for each size level, the shoe counter paper patterns of several sizes of the co-sized shaping shell cannot be graded. The specifications of the shoe counter for accommodating the shaping shell should be the same. This design makes the shaping shell wrapped tightly in the shoe counter and not easily offset or misaligned. While improving the aesthetic appearance, it ensures the quality of the shoes.

[0086] The insole 20 in this embodiment is mainly manufactured by processes such as polyethylene foaming, EVA foaming, and EVA cold pressing to achieve good resilience and a comfortable foot feeling. The insole 20 made of these materials, especially the foot cup-shaped movable insole 20, can effectively wrap and support the foot, providing additional comfort and stability. In daily life, this design enables the insole 20 to be easily taken out for cleaning and maintenance, keeping the inside of the shoe clean and hygienic. By regularly cleaning the insole 20, odors and stains can be effectively removed, the service life of the shoe 1 can be extended, and the comfort during wearing can be ensured.

[0087] In the basic implementation, the sole 40 can be made of various materials according to the needs of the wearing environment conditions, including rubber, TPR (thermoplastic rubber), EVA (ethylene vinyl acetate), PVC (polyvinyl chloride), rubber foam, polyethylene, and so on. In recent years, with the rise of the sports and fitness craze, it is recommended to use lightweight sole materials with anti-slip, wear-resistant, and bend-resistant characteristics. Among them, materials such as EVA, double-density MD, and PVC inflation have good anti-slip performance, wear resistance, and lightweight characteristics, and are suitable for making sports shoe soles. These materials can not only provide good grip and stability, but also effectively reduce the weight of the shoe 1, improve the wearing comfort, and have good durability, suitable for long-term sports and activities. Therefore, when choosing the sole material, it is recommended to use lightweight materials with anti-slip, wear-resistant, and bend-resistant characteristics according to the wearing environment and usage requirements to ensure the best balance between the performance and comfort of the shoe 1.

[0088] In this implementation, the shaping shell 1340 is suitable for various manufacturing processes, including but not limited to: adhesive process, sewing process, molding process, injection molding process, vulcanization process, Goodyear process, covering process, etc. These manufacturing processes can be selected according to the characteristics of the materials, the availability of production equipment, and different production requirements to ensure that the shaping shell 1340 can be effectively fixed on the rear heel 130 of the shoe 1 and has the required performance and stability.

[0089] In multiple embodiments of the present invention, the methods of pulling the upper and covering the upper are adopted, and the step of installing the heel support is included.

[0090] Embodiment 2, see Figure 13 , Figure 15 , the shaping shell 1340 is wrapped with a soft material to form the rear heel support assembly 140 and fixed by sewing on the inner side of the rear heel 130 of the shoe. The soft material can be selected from soft and elastic tissues such as knitted fabric, and a soft and elastic material such as sponge or light EVA, with or without foam, can be laminated on the back to improve the wearing comfort of the foot. Through such a design, the shaping shell 1340 can fit more shoe styles, and at the same time, it also reduces the cost of the shoe, making it more suitable for middle- and low-income people, which is conducive to the promotion and popularization of the present invention.

[0091] In the actual operation process, when this device is used, the design of the invention meets the growing demand for hands-free shoes, that is, shoes that can be easily worn without the assistance of hands. This is especially important for some elderly people, disabled people and people in special occupations, helping them realize the wish of being able to easily wear shoes 1 without the assistance of hands. The user can wear shoes 1 more easily and no longer needs to rely on external assistance, which is of great significance for the convenience and autonomy of daily life. The method of installing the shaping shell is simple, similar to the traditional hot melt sheet or toe puff method, so it is easy to implement and can be quickly completed on the production line. The shaping shell is manufactured by one-piece injection molding with a mold, which is suitable for mass production, reducing the shoe-making cost, and thus indirectly reducing the retail price of the shoes, making them more applicable to middle- and low-income people. The metal mold has the characteristics of durability, not being easily damaged, not aging easily and not deforming easily, thus saving the maintenance cost and at the same time extending the service life, further reducing the production cost, solving the problem of the high cost of easily worn shoes 1, and also helping to popularize to a wider range of people, improving the accessibility and practicality of shoes 1.

[0092] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A pair of shoes that is easy to wear, characterized in that: including a shaping shell; The shaping shell includes an extension part, a neck deformation part and a hemispherical part, with smooth transitions between the parts; The extension part is low in the middle, high at the outer edge, and is slightly arcuately extended backward and upward in a side view; The neck deformation part is an open arc structure that is wider at the front and narrower at the back; The horizontal width of the neck deformation part is smaller than the width of the human heel; The hemispherical part is designed to be slightly hemispherical imitating the natural shape of the human heel; In a side view, at least a part of the neck deformation part protrudes more in the toe direction than the extension part and the hemispherical part; The shaping shell is made of a material with support and elastic properties. When the external force exceeds its support strength, the shaping shell will deform, and when the external force is less than its support strength, the shaping shell will recover and maintain its original shape.

2. The shoes according to claim 1, which is convenient to wear, are characterized in that: The bottom of the shaping shell extends downward to form a slightly thin and easily bendable fixing part that increases the integrity and stability of the shoe heel and the entire shoe body; After the shoe is formed, the fixing part bends on the bottom surface of the last and is fixed to the sole.

3. A shoe that is convenient to wear, characterized in that: including a shoe mouth and a shoe counter with an internal shaping shell; The shoe mouth is the opening for the foot to insert into the shoe cavity; The shaping shell includes an extension part that is slightly arcuately extended backward and upward in a side view and effectively expands the foot entry space of the shoe mouth; The shaping shell also includes a neck deformation part that catches the heel when the shoe is worn and makes the shoe not easy to fall off; The horizontal width of the shoe mouth corresponding to the neck deformation part near the shoe counter is smaller than the horizontal width of the human heel, and a convex structure is formed from back to front on the inner and outer sides; 4. The shoes easy to wear according to claim 3, characterized in that: The shaping shell has elasticity; When the extension part is stressed, it will bend and deform backward and downward, thereby further expanding the foot entry space of the shoe mouth.

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