High instep comfort 3D printing shoes

Abstract

The utility model relates to the technical field of shoes and clothes, specifically relates to a 3D printing shoe with high instep comfort degree, which comprises a 3D printing insole formed by 3D printing technology and a 3D printing vamp wrapped outside the 3D printing insole and extending upward, an entry is integrally formed on the 3D printing vamp at a corresponding position of the human body heel, and an edge reinforcing structure is arranged on the edge of the entry through 3D printing technology.

Description

Technical Field

[0001] This utility model relates to the field of footwear and apparel technology, specifically to a 3D-printed shoe with high instep comfort. Background Technology

[0002] Shoes are garments worn on the feet to protect them and facilitate walking. Traditional shoes are made of materials such as leather, cloth, and rubber. Modern shoes mostly consist of a foam midsole and an upper sewn onto the midsole to wrap around the foot. Underneath the midsole is an outsole to improve wear resistance and grip. Together with the lacing system on the upper, the shoes are secured to the user's foot. They are lightweight and durable. 3D printed shoes are a new type of shoe that is molded in one piece using 3D printing technology. 3D printing is faster and can design lattice structure midsoles that are impossible to achieve with traditional processes. It is a key technological engine for the sustainable development of the footwear industry.

[0003] Although the aforementioned existing technologies can solve the corresponding technical problems, they still have certain drawbacks: after the existing 3D printed shoes are formed, their uppers are usually composed of multiple lattice structures, and the entry point will form a fault with high roughness. As a result, when wearing them, the wearer's foot and the fault point at the entry point are easily rubbed against each other during movement, resulting in poor wearing comfort. At the same time, long-term friction can also easily cause cracks at the entry point, affecting the service life of the 3D printed shoes. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a 3D-printed shoe that offers high comfort on the instep, is less prone to cracking at the entryway edge, and provides excellent instep comfort.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a 3D-printed shoe with high instep comfort, comprising a 3D-printed midsole formed by 3D printing technology and a 3D-printed upper covering the 3D-printed midsole and extending upward. The 3D-printed upper has an integrally formed entry point at the corresponding position of the heel of the human foot. The edge of the entry point is provided with an edge reinforcement structure by 3D printing technology. The edge reinforcement structure includes a hot-melt strip with a circular cross-section formed by 3D printing technology at the edge of the entry point near the heel of the human foot, and a cushioning strip formed by 3D printing technology at the corresponding position of the edge of the entry point near the instep of the human foot. The cushioning strip is composed of a plurality of cushioning structures formed by 3D printing technology. The cushioning structure includes a cushioning ring with an elliptical cross-section and a deformable cavity integrally formed within the cushioning ring.

[0006] A further improvement is that a high-density sheet is formed using 3D printing technology at the corresponding position on the heel of the human foot of the 3D printed shoe upper.

[0007] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When wearing this utility model, the foot is inserted into the shoe through the insertion opening formed on the 3D printed shoe upper. After insertion, the edge of the insertion opening forms a cushioning strip that fits against the instep of the foot. The pressure generated by the 3D printed shoe upper on the foot is absorbed by the deformation of multiple cushioning rings. At the same time, the cushioning strip covers the edge of the 3D printed shoe upper. When the foot comes into contact with it, its elliptical arc surface reduces the friction generated during wearing, resulting in lower pressure on the foot and reduced friction, effectively improving the comfort of the foot after insertion. In addition, the hot-melt strip seals the edge of the insertion opening, reducing friction and preventing the edge of the insertion opening from cracking, thus extending the service life of the shoe. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a three-dimensional structural diagram of the 3D printed shoe of this utility model; Figure 2 This is a top view schematic diagram of the edge reinforcement structure of this utility model; Figure 3 This is a structural schematic diagram of the front view cross-section of the buffer strip of this utility model. Detailed Implementation

[0010] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0011] See Figure 1-3As shown, the technical solution adopted in this specific embodiment is: a 3D-printed shoe with high instep comfort, including a 3D-printed midsole 2 formed by 3D printing technology and a 3D-printed upper 1 covering the 3D-printed midsole 2 and extending upward. The 3D-printed upper 1 has an integrally formed entry 3 at the corresponding position of the heel of the human foot. An edge reinforcement structure is provided on the edge of the entry 3 using 3D printing technology. The edge reinforcement structure includes a circular hot-melt strip 4 formed by 3D printing technology at the edge of the entry 3 near the heel of the human foot, and a cushioning strip 5 formed by 3D printing technology at the corresponding position of the edge of the entry 3 near the instep of the human foot. The cushioning strip 5 consists of several cushioning structures formed by 3D printing technology. The cushioning structure includes an elliptical cross-section cushioning ring 51 and a deformable cavity 52 integrally formed within the cushioning ring 51. In use, the 3D-printed midsole 2 is first formed by 3D printing technology. After the 3D-printed midsole 2 is formed, the upward-extending 3D-printed upper 1 is formed on its outer surface using 3D printing technology, and the upper 1 is then formed at the heel. An entry point 3 is provided at the foot, and an edge reinforcement structure is formed at the entry point 3 using 3D printing technology. A cushioning strip 5 is formed near the forefoot and instep, and hot-melt strips 4 are formed in other locations. The hot-melt strip 4 has a solid circular cross-section, while the cushioning strip 5 consists of several cushioning rings 51 with elliptical cross-sections. A deformable cavity 52 is formed within the cushioning rings 51, allowing them to deform. After the foot is inserted, the cushioning strip 5 formed at the edge of the entry point 3 will conform to the instep area of ​​the foot, thus providing support during exercise. 1. The pressure on the foot at the edge is absorbed by the deformation of multiple buffer rings 51. At the same time, the buffer strip 5 covers the edge of the entrance 3 of the 3D printed shoe upper 1. When the foot comes into contact with it, its elliptical arc surface reduces the friction generated during wearing, so that the foot is under less pressure and the friction is reduced, effectively improving the comfort of the foot after wearing. At the same time, the hot melt strip 4 is used to seal the edge of the entrance 3, reducing the friction and making the edge of the entrance 3 less prone to cracking, thus extending the service life of the shoe. The 3D-printed upper 1 also features a high-density sheet 6 formed using 3D printing technology at the corresponding position on the heel of the human foot. This improves the stability of the heel and makes the heel less prone to deformation during exercise, thus preventing sports injuries.

[0012] The working principle of this utility model is as follows: First, a 3D-printed midsole 2 is formed using 3D printing technology. After the midsole 2 is formed, an upwardly extending 3D-printed upper 1 is formed on its outer surface using 3D printing technology. An entry point 3 is pre-drilled at the heel. Simultaneously, an edge reinforcement structure is formed at the entry point 3 using 3D printing technology. A cushioning strip 5 is formed near the forefoot and instep. Hot-melt strips 4 are formed in other locations. The hot-melt strip 4 has a solid circular cross-section, while the cushioning strip 5 consists of several elliptical cushioning rings 51. A deformable cavity 52 is formed within each cushioning ring 51, allowing it to deform. After being put on, the edge of the insertion opening 3 forms a cushioning strip 5 that fits snugly against the instep. During exercise, the pressure exerted on the foot by the edge of the 3D printed upper 1 is absorbed by the deformation of multiple cushioning rings 51. At the same time, the cushioning strip 5 covers the edge of the insertion opening 3 of the 3D printed upper 1. When the foot comes into contact with it, its elliptical arc surface reduces the friction generated during wear, resulting in lower pressure on the foot and reduced friction, effectively improving the comfort of the foot after being put on. In addition, the hot-melt strip 4 seals the edge of the insertion opening 3, reducing friction and preventing the edge of the insertion opening 3 from cracking, thus extending the lifespan of the shoe.

[0013] This utility model aims to protect the structure of the product. The model numbers of the components are not the focus of this utility model's protection, as they are common technology. Any component on the market that can achieve the functions described above can be used as an option. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0014] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A 3D-printed shoe with high instep comfort, comprising a 3D-printed midsole (2) formed by 3D printing technology and a 3D-printed upper (1) covering the 3D-printed midsole (2) and extending upward, wherein the 3D-printed upper (1) has an integrally formed entry (3) at a corresponding position on the heel of the human foot, characterized in that: The edge of the inlet (3) is provided with an edge reinforcement structure by 3D printing technology. The edge reinforcement structure includes a hot melt strip (4) with a circular cross section formed by 3D printing technology on the edge of the inlet (3) near the heel of the human foot, and a buffer strip (5) formed by 3D printing technology on the corresponding position of the edge of the inlet (3) near the instep of the human foot. The buffer strip (5) is composed of several buffer structures formed by 3D printing technology. The buffer structure includes a buffer ring (51) with an elliptical cross section and a deformable cavity (52) integrally formed in the buffer ring (51).

2. The 3D printed shoe with high instep comfort degree according to claim 1, characterized in that: The 3D printed shoe upper (1) also has a high-density sheet (6) formed by 3D printing technology at the corresponding position of the heel of the human foot.

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