Shoe having wide topline and convenient to wear

Abstract

A shoe having a wide topline and convenient to wear, comprising an upper part, an insole part, a midsole part, and a sole part. A heel counter of the upper part comprises a heel counter support assembly; the heel counter support assembly comprises a shaping shell; the shaping shell extends backwards and upwards to form an extension part; the extension part is lower in the middle and higher at the outer edges, and the longitudinal cross section of the extension part, when viewed from the side, is in a slightly curved shape extending backwards and upwards; the horizontal width of a neck deformation part of the shaping shell is smaller than the width of the human heel. By arranging the shaping shell in a shoe heel, the size of a foot entering space is increased; in addition, a flexible and resilient resin material is used to implement an opening / closing effect of the neck deformation part of the shoe heel, thereby solving the problems that shoes are not easy to wear and shoes are prone to falling off, and satisfying the growing demand of people for hands-free shoes, i.e., shoes that can be easily worn without assistance of hands and are not prone to falling off.

Description

An open shoe that is easy to wear Technical Field

[0001] The utility model relates to the technical field of shoemaking, in particular to a pair of open shoes that are easy to wear. Background Art

[0002] As people's living standards improve, the demand for hands-free shoes continues to increase. The elderly, people with disabilities, and people in special occupations, in particular, have an urgent need for easy-to-wear shoes. They hope to have a pair of shoes that are easy to put on and do not require the assistance of their hands. Technical issues

[0003] Various types of wearable products are currently available on the market, but they present several challenges. For example, some products have a monotonous design, which can easily lead to aesthetic fatigue and fail to meet consumers' expectations for long-term wear. Furthermore, the complex and costly manufacturing process leads to high prices, hindering their widespread adoption among low- and middle-income groups.

[0004] For example, in application number 202290000225.5, Japanese Patent No. 7317385, existing easy-to-wear shoes offer a certain level of convenience, but they still have numerous shortcomings. These include design, manufacturing process, and cost, particularly in addressing the issue of shoes easily falling off. Therefore, new technical solutions are necessary to address these issues and meet the growing demands of consumers.

[0005] The utility model aims to improve the problems of existing easy-to-wear shoes. Through innovative design and manufacturing technology, it provides an easy-to-wear shoe with novel appearance, easy production and reasonable cost, thereby meeting the needs of the majority of consumers and helping to popularize it to middle- and low-income people. Technical Solutions

[0006] The purpose of the utility model is to provide an open shoe that is easy to wear, aiming to solve one of the problems existing in the existing technology and process.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution: an open-top shoe for easy wearing, comprising an upper portion consisting of a shoe opening, a midsole between the inner and outer sides of the shoe opening, a forefoot portion preceding the midsole, and a heel portion following the midsole, an insole portion, a midsole, and a sole portion. These are typical shoe structures and will not be described further herein.

[0008] According to some embodiments of the present invention, the back cover includes a molded shell.

[0009] Preferably, the overall appearance of the shaped shell is a shape that is narrow at the top and wide at the bottom, like a waisted gourd or a chayote.

[0010] Specifically, the upper portion of the molded shell extends rearward and upward, forming an extension. The extension supports the upper portion of the shoe's heel, extending rearward and upward to expand the shoe's foot opening. The length ratio of the heel to the toe of the shoe opening before expansion is preferably 3:2.

[0011] Specifically, the extension portion is low in the middle and high at the outer edge, and the longitudinal section when viewed from the side is non-linear and slightly curved extending in the rearward and upward direction. The extension portion is the support body of the upper end of the shoe upper, that is, the upper end of the shoe upper is also low in the middle and high at the outer edge. This design is inspired by the flat pan-shaped concave shape at the bottom of the heel, and is intended to imitate the shape and size of the heel, so that the upper end of the shoe upper can better bear the pressure of the heel, to better support the heel, and provide good stability and a comfortable wearing experience. The longitudinal section when viewed from the side is slightly curved extending in the rearward and upward direction, the purpose of which is to prevent the heel from having an obvious footrest feeling when stepping on the upper end of the shoe upper. This design helps to improve wearing comfort and reduce discomfort to the feet.

[0012] Specifically, the lower portion of the molded shell is designed to be slightly hemispherical, mimicking the natural shape of the human heel for tighter storage and support. The hemispherical portion supports the lower end of the shoe's heel, inspired by the shape of the heel. This design allows the heel to completely wrap around the heel, effectively improving the shoe's stability and comfort.

[0013] Specifically, a neck deformation portion is formed between the extension and the semicircular shape of the molded shell. The extension supports the upper portion of the shoe's heel, creating a neck deformation between the upper and lower ends. This design primarily facilitates smooth entry of the heel into the shoe during donning, thereby enhancing wearer comfort and convenience. This design allows the heel to slide smoothly into the shoe, avoiding friction or obstruction with the heel, and improving the smoothness and comfort of donning.

[0014] Specifically, the neck deformation portion is a slightly V-shaped, open, arc-shaped structure that is wider in front and narrower in the back. The horizontal width of the neck deformation portion is smaller than the width of a human heel. When the shoe is normally worn, the neck deformation portion, which is smaller than the width of a human heel, can better secure the heel, improving wearing comfort and stability while reducing the possibility of it falling off. The horizontal width of the neck deformation portion can also be smaller than the width of the extension portion.

[0015] Preferably, the mold shell includes a centering mark for aligning the center of the shoe back. During the shoemaking process, the centering mark can be visually or tactilely identified to accurately align the mold shell with the center of the shoe back. This alignment ensures uniform support from the mold shell, prevents deformation of the shoe back, and improves wearing comfort.

[0016] Preferably, a fine texture structure is formed on the surface of the molding shell to 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 having a certain support strength and toughness and elasticity. When the external force exceeds its support strength, the shaping shell (1340) will deform. 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 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 shoes while ensuring wearing comfort and durability.

[0018] Preferably, the shaping shell deforms when an external force exceeds its support strength, and recovers and maintains its original shape when the external force is less than its support strength or disappears. The shaping shell supports the shoe back. When the upper end of the shoe back is subjected to a heel-stamping force, the extension portion bends and expands rearward and downward under the downward pedaling force, thereby increasing the foot entry space at the shoe opening to allow the heel to enter the shoe cavity. The shaping shell recovers and maintains its original shape when the pedaling force disappears.

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

[0020] Preferably, the shaping shell is installed on the back of the shoe, between the upper material and the lining material. The installation method is simple, similar to the traditional method of installing hot melt sheets or Hongbao. In order to prevent the shaping shell from shifting and moving between the upper material and the lining material, it is recommended to brush a small amount of glue to fix and stick it during installation. The upper material can be made of animal leather, synthetic leather, artificial leather, textiles, knitwear, etc., and fillers can be compounded on the back according to the wearing environment conditions. The design should consider the principles of beauty, fashion and practicality. It is recommended to choose soft and wear-resistant materials such as knitwear for the lining material. The back of the lining material can be compounded with foamed or non-foamed soft and elastic materials, such as sponge, light EVA, etc., to improve the wearing comfort of the feet. Through such a design, the shoes can be comfortable and meet the needs of beauty and fashion, thereby enhancing the wearer's experience.

[0021] Preferably, the shaping shell has several fixing parts at the bottom, which play a key role in the shoe upper making process. The shoe upper making process is a shoemaking process that fixes the upper and midsole by bonding the materials between the upper (the lower part of the upper) and the midsole (the layer above the sole). In this process, the fixing parts are pulled under the midsole, and then the sole is adhered and fixed. The fixing parts are an integral part of the shaping shell, and the shaping shell itself serves as a support for the shoe upper. When the fixing parts are pulled in together and fixed between the midsole and the sole, the shoe upper, midsole and sole form a whole, which effectively strengthens the shoe upper and the entire shoe structure. This design not only improves the durability and stability of the shoe, but also helps to extend the service life of the shoe.

[0022] Preferably, the shaped shell plays a key role in the shoe uppering process. In this process, the connecting seams between the upper portion of the shoe's rear upper and the midsole form a sandwich structure between the upper material and the lining material, with the shaped shell positioned within this sandwich. In practice, the upper leg of the upper's rear upper is lengthened by approximately the length of the fixed portion, while the rear end of the midsole corresponding to the upper leg is shortened by approximately the length of the fixed portion. This allows the extended leg to be pulled by the shortened midsole after shoe lasting, pulling a portion of the leg (the fixed portion containing the shaped shell) toward the bottom of the shoe last. This method significantly strengthens the overall structure of the upper and sole. The midsole material used in the shoe uppering process is typically a fabric-like material with low elasticity, such as a textile or non-woven fabric. The shaped shell serves as a support for the upper, sandwiched between the upper and the midsole, and then secured to the sole with glue after being sewn together with the midsole. This creates a single, integrated structure between the shoe's heel, midsole, and sole, effectively reinforcing the heel and the entire shoe. This design improves the shoe's stability and durability, helping to extend its lifespan and providing a better wearing experience.

[0023] Preferably, by providing several notches on the bottom of the hemispherical portion, a contraction space is created, allowing the mold shell to more easily adapt the hemispherical portion to the heel shape of the last or base mold during the shoemaking process through contraction force. Furthermore, by making the thickness below the horizontal line of the notch apex slightly thinner than the rest of the structure, the bottom of the hemispherical portion can be more easily deformed, thereby better adapting to the shape of the last or base mold. This improved technology not only improves the adaptability of the hemispherical portion but also enhances the final quality of the footwear product.

[0024] Preferably, the shaping shell can be integrally formed by injection molding using a chromium-nickel-molybdenum metal mold, and the mold is made of chromium-nickel-molybdenum alloy mold steel, so that the mold has high durability and stability, which can ensure the accuracy and consistency of the product during the production process. The integral molding of the mold makes the production of the shaping shell more efficient and can meet the needs of mass production, thereby reducing the cost of shoemaking. This manufacturing process indirectly reduces the retail price of shoes, which is conducive to popularization among middle- and low-income people. In addition, the mold made of chromium-nickel-molybdenum alloy mold steel has the characteristics of being not easy to damage, not easy to age, not easy to deform, and has a long service life, thereby saving maintenance costs. This means that there is no need to frequently replace or maintain the mold during the production process, further reducing production costs.

[0025] Preferably, the insole is primarily manufactured using processes such as polyethylene foam, EVA foam, and EVA cold pressing to achieve good resilience and a comfortable feel. Insoles made from these materials, particularly cup-shaped removable insoles, effectively wrap and support the foot, providing additional comfort and stability. In daily life, this design allows the insole to be easily removed for cleaning and maintenance, keeping the inside of the shoe clean and hygienic. Regular cleaning of the insole effectively removes odors and stains, extending the lifespan of the shoe and ensuring comfort during wear.

[0026] The sole can be made of a variety of materials, including rubber, TPR (thermoplastic rubber), EVA (ethylene vinyl acetate), PVC (polyvinyl chloride), rubber foam, polyethylene, and others, depending on the desired wearing environment. With the recent surge in the popularity of exercise and fitness, lightweight sole materials with anti-slip, wear-resistant, and flex-resistant properties are recommended. Among these, materials such as EVA, secondary MD (double density), and blown PVC offer excellent anti-slip, wear-resistant, and lightweight properties, making them suitable for athletic shoe soles. These materials not only provide excellent grip and stability, but also effectively reduce shoe weight, improving wearing comfort. They also offer excellent durability, making them suitable for extended exercise and activity. Therefore, when selecting a sole material, it is recommended to choose lightweight materials with anti-slip, wear-resistant, and flex-resistant properties, tailored to the desired wearing environment and intended use, to ensure an optimal balance between performance and comfort.

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

[0028] Preferably, the edge of the molded shell is covered with a filling material, and the filling material extends from the bottom of the Achilles tendon 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 foot contact comfort. Beneficial effects

[0029] Compared with the prior art, the present invention provides an open shoe that is easy to wear and has the following beneficial effects:

[0030] 1. This open-toed shoe is easy to wear. By building a molded shell into the heel, the size of the foot entrance is effectively enlarged. At the same time, the use of elastic and tough resin material realizes the opening and closing function of the heel, thereby solving the problems of easy wearing and heel problems.

[0031] When the front end of the human foot is inserted into the shoe and the heel is stepped down, the extension portion of the shaping shell is bent backward and downward by the downward stepping force, thereby increasing the foot entry diameter of the shoe opening. At the same time, the neck deformation portion is deformed and expanded, and the heel is squeezed into the shoe cavity. When the heel enters the shoe cavity, the neck deformation portion quickly returns to its original shape, and the shoe upper also returns to its original shape at the same time, locking the heel and preventing it from falling off.

[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 utility model 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, people with disabilities and people in special occupations, helping them realize their desire to easily put on shoes without the help of hands.

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

[0035] 2. The open-top, easy-to-wear shoes use a molded shell made of a resin material with a 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 Hongbao method, so it is easy to implement and can be completed quickly on the production line.

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

[0038] Metal molds are durable, not prone to damage, aging, and deformation, which saves maintenance costs, extends service life, and further reduces production costs.

[0039] The creativity of the present utility model 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 utility model successfully solved these problems with its innovative design and improvements, 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 utility model is real and urgent. The customer's customization needs not only highlight the technical advantages of the present utility model, but also prove that these technical features are not easily thought of by practitioners in this industry, but are innovative solutions that have been verified by the market. Therefore, while solving the problems of the existing technology, the present utility model 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 following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0041] FIG1 is a side view of an open shoe that is easy to wear provided by an embodiment of the present invention;

[0042] FIG2 is a rear upper left view of an open-top shoe that is easy to wear provided by an embodiment of the present invention;

[0043] Figure 3 is a vertical cross-sectional view of the center of the upper of an open-top shoe for easy wearing provided by an embodiment of the present invention. a is a schematic diagram of the upper construction, and b is a schematic diagram of the upper construction;

[0044] FIG4 is a perspective view of a built-in molded shell on the heel of an open-top, easy-to-wear shoe provided by an embodiment of the present invention;

[0045] FIG5 is a schematic diagram of the pedaling force applied to a built-in molded shell on the heel of an open-top, easy-to-wear shoe provided by an embodiment of the present invention;

[0046] FIG6 is a rear view of an open shoe that is easy to wear provided by an embodiment of the present invention;

[0047] FIG7 is a top front view of an open shoe that is easy to wear provided by an embodiment of the present invention;

[0048] FIG8 is a top view of the upper left front of an open shoe that is easy to wear provided by an embodiment of the present invention;

[0049] FIG9 is a rear left bottom view of the upper of an open-top, easy-to-wear shoe provided by an embodiment of the present invention;

[0050] Figure 10 is a rear left bottom view of the upper construction of an open-top, easy-to-wear shoe provided by an embodiment of the present invention. The dotted line represents the outline of the molded shell, and the one-dot-one-horizontal line represents the stitching line between the upper and the midsole.

[0051] FIG11 is a perspective view of a built-in molded shell of an open shoe that is easy to wear provided by an embodiment of the present invention;

[0052] FIG12 is a horizontal cross-sectional view of the deformed portion of the neck of the built-in molded shell of an open shoe that is easy to wear according to an embodiment of the present invention.

[0053] FIG13 is a schematic diagram of an open shoe for easy wearing provided by an embodiment of the present invention, showing another method of assembling a built-in shaping shell.

[0054] FIG14 is a schematic diagram of a mold of a built-in shaping shell of an open shoe that is easy to wear according to an embodiment of the present invention.

[0055] FIG15 is a schematic diagram of an open-top easy-to-wear shoe provided by an embodiment of the present invention, wherein the built-in shaping shell is independently assembled and installed on the inner side of the shoe upper.

[0056] Figure 16: Steps of the assembly method of the molded shell provided in an embodiment of the present invention.

[0057] Figure 17: Schematic diagram of a molded shell with a notch provided in an embodiment of the present invention

[0058] FIG18 is a schematic diagram showing the location of the filling material provided in an embodiment of the present invention at the back of a shoe.

[0059] In the figure: shoe 1; upper portion 10; upper material 11; lining material 12; filling material 13; insole 20; midsole 30; sole 40; shoe opening 100; middle upper 110; forefoot 120; rear upper 130; rear upper support assembly 140; upper end portion 131 of the rear upper; middle upper portion 132 of the rear upper; lower end portion 133 of the rear upper; forming shell 1340; extension portion 1341; neck deformation portion 1342; hemispherical portion 1343; fixing portion 1344; notch portion 1345. Modes for Carrying Out the Invention

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0061] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0062] The following describes an embodiment of the present invention with reference to FIG1 to FIG12.

[0063] In the first embodiment, referring to Figures 1, 2, 3, 4, and 11, the present invention provides an open-toe, easy-to-wear shoe comprising an upper portion 10, comprising a shoe opening 100, a midsole 110 on the inner and outer sides of the shoe opening 100, a forefoot 120 preceding the midsole 110, and a rear shoe 130 following the midsole 110; an insole 20, a midsole 30, and a sole 40. The rear shoe 130 comprises an upper material 11 and a filling material 13, a lining material 12 and a filling material 13, a rear support assembly 140 sandwiched therebetween, and a molded shell 1340, which, when viewed from the back, has an overall appearance, when viewed from the back, of a narrow upper portion and wide lower portion, resembling a gourd or chayote, similar in shape to a chayote or chayote.

[0064] Specifically, the upper portion of the shaping shell 1340 extends backward and upward to form an extension portion 1341 , and the lower portion of the shaping shell 1340 is a hemispherical portion 1343 that imitates the shape of a heel. A neck deformation portion 1342 is provided between the extension portion 1341 and the hemispherical portion 1343 .

[0065] Specifically, the shaping shell 1340 corresponds to various parts of the shoe back 130, among which the shaping shell extension part corresponds to the upper end part 131 of the shoe back, the shaping shell neck deformation part corresponds to the upper middle end part 132 of the shoe back, and the shaping shell hemispherical part 1343 corresponds to the lower end part 133 of the shoe back.

[0066] In this embodiment, the shoe upper 130 includes a molded shell 1340, which is integrally molded by injection molding using a metal mold 1350. The mold 1350 can be made of P20 steel or the more durable and corrosion-resistant 738H steel. P20 and 738H steels contain metal components such as chromium, nickel, and molybdenum, which improve the steel's toughness, hardenability, and corrosion resistance. This gives the mold 1350 greater durability and stability, ensuring accuracy and consistency in the finished product. Referring to FIG14 , the mold 1350 is a one-piece, four-part design, molded in one piece. This makes the production of the molded shell 1340 more efficient and adaptable to mass production, thereby reducing shoemaking costs. This manufacturing process indirectly lowers the retail price of the shoe 1, making it more accessible to middle- and low-income groups. Furthermore, the mold 1350, made of chromium-nickel alloy steel, is durable, resistant to aging, and deformation, resulting in a long service life and reduced maintenance costs. This means that frequent mold replacement or maintenance is not required during production, further reducing production costs.

[0067] In this embodiment, referring to Figures 1, 7, 8, and 11, the upper portion of the molded shell 1340 extends rearward and upward, forming an extension 1341. Extension 1341 supports the upper portion 131 of the shoe back. In other words, the shoe back 130 also extends rearward and upward, expanding the space for the shoe's foot entry opening (shoe opening 100). Before the shoe opening 100 is enlarged, the ratio of the length of the upper to the shoe opening 100 in the toe-heel direction is preferably 3:2. This embodiment demonstrates that enlarging the shoe opening with extension 1341 is one of the best solutions for achieving easier shoe entry.

[0068] In the present embodiment, referring to Figures 3 and 4, the extension 1341 is lower in the middle and higher in the outer edge, and the side view longitudinal section shows a slightly arcuate extension in the backward and upward direction. The extension is a support body for the upper end portion 131 of the shoe upper, that is, the upper end of the shoe upper 130 is also lower in the middle and higher in the outer edge. This design is inspired by the flat pan-shaped concave bottom of the heel, which is intended to imitate the shape and size of the heel so that the upper end portion 131 of the shoe upper can better bear the pressure of the heel, better support the heel, and provide good stability and a comfortable wearing experience. The side view longitudinal section shows a slightly arcuate extension in the backward and upward direction. The purpose of this embodiment is to prevent the heel from having an obvious footrest feeling when stepping on the upper end portion of the shoe upper. This design helps to improve wearing comfort and reduce the discomfort to the foot.

[0069] In this embodiment, referring to Figures 3 and 4 , the lower hemispherical portion 1343 of the molded shell 1340 is designed to be slightly hemispherical, mimicking the natural shape of the human heel for tighter storage and support. Hemispherical portion 1343 serves as a support for the lower end of the shoe upper 133 . This design, inspired by the shape of the heel, allows the shoe upper to completely wrap around the heel, effectively improving the shoe's stability and comfort.

[0070] In the present embodiment, referring to Fig. 1, Fig. 2, and Fig. 6, there is a neck deformation portion 1342 between the extension portion 1341 and the semicircular portion of the above-mentioned molded shell 1340. The extension portion 1341 is a support for the upper end portion 131 of the shoe upper, that is, the upper end and the lower end neck of the shoe upper 130 are deformed. The main function of its 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 between the shoe upper 130 and the shoe upper, thereby improving the smoothness and comfort of shoe-wearing.

[0071] In this embodiment, the neck deformation portion 1342 is an open arc-shaped structure. The horizontal width of the neck deformation portion 1342 is smaller than the width of the human heel. When the shoes are worn normally, the neck deformation portion 1342, which is smaller than the width of the human heel, will get stuck in the heel. Through this design, the shoe 1 can better fix the heel during wearing, thereby improving wearing comfort and stability, and reducing the possibility of falling off.

[0072] In some other embodiments, depending on the style of the shoes and the size of the subject's heels, 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.

[0073] In this embodiment, the molded shell 1340 is made of a polymer material, such as a resin or plastic, that exhibits sufficient support strength, toughness, and elasticity. Highly elastic materials such as TPU (polyurethane), TPE (thermoplastic elastomer), or TPEE (thermoplastic polyester elastomer) are recommended. These materials exhibit excellent elasticity and toughness, providing sufficient support, and are also wear-resistant, durable, and heat-resistant. Therefore, a molded shell made of these high-elasticity materials effectively meets the structural requirements of the shoe 1 while ensuring wearer comfort and durability.

[0074] In this embodiment, referring to Figures 5 and 12, extension 1341 bends downward and rearward when subjected to a downward pedaling force, increasing the space for the foot to enter the shoe opening. This poses a major challenge to the protruding heel during shoe entry, making it difficult for the shoe's heel to enter the shoe cavity. The leftward and rightward expansion of the heel cup in Application No. 202290000225.5 has little effect on resolving this issue. However, the rearward expansion of the shaped shell in this embodiment more effectively adapts to the shape and movement of the heel, providing more space for the heel to enter the shoe cavity, allowing for smoother entry. This rearward expansion technique is closely related to resolving the problem of heel entry into the shoe cavity and is more targeted and effective. When the external force is less than its supporting strength, extension 1341 returns to and maintains its original shape. The shaped shell 1340 serves as a support for the shoe's rear upper 130, meaning that the shoe's rear upper 130 returns to and maintains its original shape.

[0075] In this embodiment, referring to Figures 5 and 12, when the upper end of the shoe upper 130 is subjected to the force of the heel stepping on it, the internal neck deformation portion 1342 is affected by the stress and deforms and expands outward. This deformation allows the heel to slide down along the extension portion 1341, easily pass through the expanded neck deformation portion 1342, and then smoothly slide into the hemispherical portion 1343, completing the shoe wearing process. When the heel slides into the hemispherical portion 1343, the expansion force acting on the neck deformation portion 1342 instantly disappears, and the neck deformation portion also instantly returns to its original shape due to the rebound force. This design allows the neck deformation portion 1342 to clamp the heel, making it difficult to pull out, thereby achieving the effect of preventing the shoe upper 130 from falling off. This opening and closing function design of the neck deformation portion not only ensures the wearability of the shoe, but also enhances the effectiveness of preventing the heel from falling off, providing a better user experience for the wearer.

[0076] In this embodiment, when the experimenter wears the shoes, when the front end of the human foot is inserted into the shoe and the heel steps down, the extension part 1341 of the molded shell is subjected to the downward stepping force and bends downward successively, thereby increasing the foot entry space of the shoe opening. At the same time, the neck deformation part 1342 is affected by the stress and deforms and expands, and the heel slides into the shoe cavity; when the heel enters the shoe cavity, the neck deformation part 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 shoes, when the heel applies force toward the shoe opening, the heel will stretch the neck deformation part to make the heel fall off from the heel part of the shoe.

[0077] In this embodiment, the mold shell 1340 has a uniform thickness and is chamfered from the inside to the outside near the edge. This design aims to improve the strength of the mold shell while making the shoe surface smooth and flat without a noticeable contour, and without a noticeable footrest when the user wears it.

[0078] In this 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. During the shoemaking process, the center positioning mark can be identified by vision or touch, 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 adopts a convex or concave geometric shape structure 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 on 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-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.

[0079] In this embodiment, referring to FIG3 , a shaping shell 1340 is installed within the rear support assembly 140 between the upper material 11 and the lining material 12 of the shoe rear 130. The rear support assembly 140 includes a filling material and the shaping shell 1340. The installation method is simple, similar to the traditional method of installing a heat-insulating sheet or a lining. To prevent the shaping shell 1340 from shifting between the upper material 11 and the lining material 12, it is recommended to apply a small amount of glue during installation to secure the shaping shell 1340. The filling material can be a soft material such as sponge that absorbs impact force to improve foot contact comfort. In this embodiment, a sponge with a thickness of 1.0 to 2.0 cm is used. The edges of the shaping shell are covered with the filling material, and the filling material extends from the base of the Achilles tendon beyond the bare tube to prevent the foot from resting. The upper material 11 can be made of animal leather, synthetic leather, artificial leather, textiles, knitwear, etc., and filling materials can be added to the back depending on the wearing environment. The design should consider the principles of aesthetics, fashion, and practicality. It is recommended that the shoe lining material 12 be made of a soft, wear-resistant material, such as knitwear. The back of the shoe lining material 12 can be composited with a soft, elastic, foamed or non-foamed material, such as sponge or lightweight EVA, to enhance foot comfort. This design ensures that the shoe 1 is both comfortable and stylish, enhancing the wearer's experience.

[0080] In this embodiment, the surface of the initially formed shaping shell is usually relatively smooth, which is not conducive to the adhesion of the adhesive. In order to enhance the adhesion of the adhesive, it is necessary to apply fine textures to the surface of the shaping shell. After the texture structure is added to the inner surface of the mold, the shaping shell will replicate the tiny textures on the surface of the mold, thereby forming a fine texture structure. The depth of these textures does not need to exceed 0.5 mm, and the shape can be linear, mesh, dotted, 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. This kind of texture structure is not recorded in the current patent technology literature in this industry, especially in the field of easy-to-put-on-and-off technology. This design is significantly different from the smooth surface in the prior art and provides a better adhesion effect. The texture of the inner surface of the mold can use high-precision CNC processing technology, or chemical etching or laser etching technology to ensure that the depth and shape of the texture meet the design requirements.

[0081] In this embodiment, referring to Figure 9, the molded shell 1340 has several fixing portions 1344 at its lower portion that are slightly thinner than the hemispherical portion and more easily bendable. These fixing portions 1344 play a key role in the shoe uppering process. This process involves bonding the material between the upper (the lower portion of the upper) and the midsole 30 (a layer on the sole) to secure the upper and midsole. In this process, the fixing portions 1344 are pulled under the midsole 30 before being attached to the sole and secured. The fixing portions 1344 are an integral part of the molded shell 1340, which itself supports the shoe upper 130. When the fixing portions 1344 are pulled in and secured between the midsole and sole, the shoe upper 130, midsole 30, and sole 40 form a single unit, effectively strengthening the shoe upper 130 and the entire shoe structure. 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 a pioneering work in the field of easy-to-wear-on and easy-to-wear technology, solving the important problem of the existing shaping shell being unstable and easy to shift in the shoe body structure.

[0082] According to other embodiments of the present invention, as shown in FIG10 , the fixing portion 1344 plays an important role in the shoe uppering process. In this process, the connecting seams between the upper portion 10 of the shoe back 130 and the midsole 30 form a sandwich structure between the upper material 11 and the shoe lining material 12, with the molding shell (1340) positioned within this sandwich. The shoe upper portion 10's foot is lengthened by approximately the length of the fixing portion 1344, while the portion corresponding to the rear end of the midsole 30 and the shoe back 130 is shortened by approximately the length of the fixing portion 1344. This allows the lengthened foot portion to be pulled by the shortened midsole 30 after the shoe is fitted onto the shoe last, thereby pulling a portion of the foot portion (the fixing portion 1344 containing the molding shell) to the bottom of the shoe last. This method can significantly strengthen the overall structure of the upper portion 10 and the shoe bottom 40.

[0083] The midsole 30 (midsole fabric) used in the shoe upper manufacturing process is typically made of a fabric with low elasticity, such as a textile or non-woven fabric. The molded shell 1340, which supports the shoe upper 130, is sewn together with the upper 10 and the midsole 30 (midsole fabric) and then secured to the sole 40 with glue. This creates a single, integrated structure for the shoe upper 130, the midsole 30 (midsole fabric), and the sole 40, effectively reinforcing the shoe upper 130 and the entire shoe. This design improves the stability and durability of the shoe 1, extending its service life and providing a better wearing experience. In Figure 10, the dot and horizontal line represent the sewing thread.

[0084] According to other embodiments of the present invention, the heel of the shoe last is carved into a desired shape. A hot-melt adhesive composite sheet (if using a Gangbao composite sheet, it must be soaked in solvent) is assembled into the upper portion 10. After being fixed to the shoe last, it is heated to soften the hot-melt adhesive composite sheet and tightly fit the shoe last. The upper portion is then placed in a cold setting machine for low-temperature setting (if using a Gangbao composite sheet, the solvent must be completely dried). Because the upper portion of the setting shell 1340 is frequently subjected to foot traffic, it is more effective to use a stronger and more elastic material, such as a resin. This material can be connected to the lower composite sheet by sewing or gluing. To accommodate foot comfort and maximize its strength and elasticity, the upper portion can be designed to be thicker in the middle and thinner at the edges.

[0085] During shoemaking, 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 of the shoe back 130 toward the shoe opening. Furthermore, the thickness of the hot melt adhesive composite sheet or the Hongbao composite sheet can be adjusted, and the number of sheets can be increased or decreased, depending on the intended use and style of the shoe, to ensure easy donning and removal, and a comfortable fit.

[0086] The synthetic sheet type shaping shell is similar in appearance to the shaping shell in the above embodiment of the utility model, and can also achieve the effect of being easy to put on and take off. It is suitable for shoes with small order quantities, no forming molds, and no high requirements on the overall performance of the shaping shell. The disadvantage is that the hot melt sheet is easy to break when encountering external forces and easy to deform when encountering high temperatures. The advantage is that it can fit perfectly with the existing lasts and molds. In order to make the extension part 1341 and the neck deformation part 1342 easy to deform and extend the service life, materials with better supporting force and elasticity can be used as substitutes. Which specific shaping shell to choose needs to be selected according to the customer's order requirements. Anything that can achieve the effect of being easy to wear as described in the claims of this utility model belongs to the protection scope of this utility model.

[0087] According to other embodiments of the present invention, as shown in Figure 17, multiple notches are provided at the bottom of the hemispherical portion to create space for contraction. This allows the hemispherical portion to more easily adapt to the shape of the heel of the last or base mold during the shoemaking process through contraction force. The shape, size, and location of these notches are designed to improve the fit of the hemispherical portion to the wearer's heel, enhancing wearing comfort. Furthermore, by making the thickness below the horizontal line of the notch apex slightly thinner than the rest of the portion, the bottom portion of the hemispherical portion can bend and deform more easily, thereby better adapting to the shape of the last or base mold. Especially in the field of injection molded shoes, many shoe styles cannot be manufactured with separate lasts and base molds, and often use existing lasts and base molds, which are difficult for conventional spherical portions to adapt to. In this embodiment, by adding notches to the spherical portion, the bottom of the hemispherical portion can use the space in the notches to expand or contract, adapting to the shape of the existing last and the heel of the mold, making it more adherent to the last and reducing the occurrence of material leakage and last mismatch during operation. This improved technology not only improves the fit of the hemispherical part, but also improves the final quality of the footwear product.

[0088] According to some embodiments of the present invention, the molded shell includes multiple sizes, each corresponding to at least one shoe size. When a molded shell corresponds to multiple shoe sizes, to prevent uneven appearance and internal quality due to the molded shell being loose or tight around the shoe upper, the shoe upper paper templates of multiple sizes sharing the same molded shell cannot be graded during grading. The molded shells containing the shoe upper must be of the same size. This design ensures that the molded shell is tightly wrapped around the shoe upper, preventing it from shifting or misaligning. This improves the aesthetics of the shoe while maintaining shoe quality.

[0089] The insole 20 in this embodiment is primarily manufactured using processes such as polyethylene foaming, EVA foaming, and EVA cold pressing to achieve excellent resilience and a comfortable feel. Insoles 20 made from these materials, particularly the cup-shaped movable insole 20, effectively wrap and support the foot, providing additional comfort and stability. In daily life, this design allows the insole 20 to be easily removed for cleaning and maintenance, keeping the inside of the shoe clean and hygienic. Regular cleaning of the insole 20 effectively removes odors and stains, extending the service life of the shoe 1 and ensuring wearer comfort.

[0090] The sole 40 in the fundamental embodiment can be made of a variety of materials, including rubber, TPR (thermoplastic rubber), EVA (ethylene vinyl acetate), PVC (polyvinyl chloride), rubber foam, polyethylene, and others, depending on the desired wearing environment. With the recent surge in the popularity of exercise and fitness, lightweight sole materials with anti-slip, wear-resistant, and flex-resistant properties are recommended. Among these, materials such as EVA, secondary MD (double density), and blown PVC offer excellent anti-slip, wear-resistant, and lightweight properties, making them suitable for athletic shoe soles. These materials not only provide excellent grip and stability, but also effectively reduce the weight of the shoe 1, improving wearing comfort. They also offer excellent durability, making them suitable for extended exercise and activity. Therefore, when selecting a sole material, it is recommended to choose a lightweight material with anti-slip, wear-resistant, and flex-resistant properties, tailored to the desired wearing environment and intended use, to ensure an optimal balance between performance and comfort.

[0091] In this embodiment, the mold shell 1340 is suitable for a variety of manufacturing processes, including but not limited to gluing, sewing, molding, injection molding, vulcanization, Goodyear, and wrapping. These manufacturing processes can be selected based on material properties, availability of production equipment, and production requirements to ensure that the mold shell 1340 can be effectively fixed to the upper 130 of the shoe 1 and has the required performance and stability.

[0092] In multiple embodiments of the present invention, the uppering method and the uppering method are adopted, and the steps of installing the heel support are included, with reference to FIG16 .

[0093] In the second embodiment, referring to Figures 13 and 15 , a shaping shell 1340 is wrapped with a soft material to form the back support assembly 140, which is secured to the inside of the back 130 with stitches. The soft material can be a soft and elastic fabric such as knitted fabric. The back surface can be composited with a foamed or non-foamed soft and elastic material, such as sponge or lightweight EVA, to enhance foot comfort. This design allows shaping shell 1340 to fit a wider range of shoe styles, while also reducing shoe costs, making it more suitable for low- and middle-income individuals and promoting the widespread adoption of this invention.

[0094] During actual operation, when this device is used, the design of the utility model meets people's growing demand for hands-free shoes, that is, shoes that can be easily put on without the assistance 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 1 without the assistance of hands. Users can put on shoes 1 more easily and no longer need 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 Hongbao method, so it is easy to implement and can be completed quickly on the production line. The manufacturing of the shaping shell adopts mold 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. The metal mold has the characteristics of durability, not easy to damage, not easy to age and not easy to deform, thereby saving maintenance costs, while extending the service life, further reducing production costs, solving the problem of high cost of easy-to-wear shoes 1, and helping to popularize it to a wider range of people, improving the accessibility and practicality of shoes 1.

[0095] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. An open-toed shoe that is easy to put on, 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 each part; The extension part is low in the middle, high at the outer edge, and is slightly arcuately extended backward and upward in side view; 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; The hemispherical part is designed to be slightly hemispherical to mimic the natural shape of the human heel; The shaping shell has a uniform thickness and is bevelled from the inside to the outside near the edge; The shaping shell is made of a material with supporting and elastic properties. When the external force exceeds its supporting strength, the shaping shell will deform, and when the external force is less than its supporting strength, the shaping shell will recover and maintain its original shape.

2. The open-toed shoes that are easy to wear according to claim 1, characterized in that: The shaping shell includes a fixing part that is slightly thin, easily bendable, and fixed on the sole to increase the integrity and stability of the shoe heel and the entire shoe body.

3. An open-toed shoe that is easy to wear, characterized in that: including a shoe opening and a shoe counter with an internal shaping shell; The shoe opening is the opening part 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 side view and effectively expands the foot entry space of the shoe opening; The shaping shell includes a neck deformation part that effectively holds the heel in place when the shoe is worn, making the shoe not easily fall off; The horizontal width of the shoe opening near the shoe counter corresponding to the neck deformation part is smaller than the horizontal width of the human heel; 4. The open-toe shoes convenient for wearing according to claim 3, wherein: The shaping shell has elasticity; When the extension part is stressed, it will bend and deform backward and downward, thus further expanding the foot entry space of the shoe opening.

Images