3D printed heelpiece and sole

Abstract

The utility model relates to the technical field of shoes, in particular to a three-dimensional (3D) printed heelpiece and sole, which comprise a heelpiece body, the edge of the heelpiece body is of a D-shaped structure consisting of an I-shaped front edge and a C-shaped edge, the C-shaped edge of the heelpiece body extends upwards to form a heel part, and the heelpiece body and the heel part are lattice structural bodies integrally formed by 3D printing. And the edge surfaces of the I-shaped front edge and the heel part of the heel main body are 3D printed edge frames. Compared with a heelpiece of a traditional sole, the heel of the shoe is manufactured through the 3D printing technology as an independent part, so that the heel can be used as an independent part and can be combined with the front sole and the arch part of the sole made of other materials for use, the heelpiece and the heel part are integrally formed in a 3D printing mode, better wrapping protection can be provided for the ankle, and the ankle is protected. And the ankle sprain caused by dislocation is not easy to occur.

Description

Technical Field

[0001] This utility model relates to the field of shoe technology, and more specifically to a 3D printed shoe heel and sole. Background Technology

[0002] Using 3D printing technology to produce shoe soles, compared to existing mold production, can print soles of various specifications and complex shapes, achieving product diversification, enhancing product competitiveness, and saving processes. In recent years, it has been favored by shoe companies and has become a research and development direction for them.

[0003] However, the widespread adoption of 3D printing technology in industrial products is currently limited by materials and costs. The raw materials for 3D printing are currently quite limited, with only a few commonly used materials such as TPU (thermoplastic polyurethane), nylon, resin, rubber, and metal powder. Coupled with the relatively high cost of 3D printing, it cannot yet completely replace traditional manufacturing techniques in practical applications. This is particularly true in the footwear industry. In athletic shoes, the soles are mostly made of foam materials. Lightweight and elastic foam materials provide excellent comfort for the feet. Currently, 3D-printed soles can significantly enhance shock absorption and elasticity through complex mesh lattices, making them ideal for the stress requirements of the heel area. However, they cannot compare to traditional foam materials in terms of comfort and flexible rebound. Especially in existing 3D-printed soles, the performance of different areas is relatively uniform due to the limitations of the single mesh structure. However, human movements such as walking and running require different performance characteristics in different areas of the sole, which a single 3D-printed sole cannot meet. This is the main reason why the widespread application of 3D printing in shoe sole manufacturing is limited in the footwear industry. In addition, the heel and heel plate of existing shoes are usually separate, and the sole cannot provide protection for the ankle. It can only be protected by the heel counter alone. However, because the heel counter and heel are separate, they are prone to misalignment, which makes it impossible to protect against ankle sprains during exercise. Utility Model Content

[0004] The purpose of this invention is to provide a 3D-printed shoe heel and sole to solve the aforementioned problems in the prior art.

[0005] The present invention adopts the following technical solution:

[0006] A 3D-printed shoe heel includes a shoe heel body. The edge of the shoe heel body is a D-shaped structure composed of an I-shaped leading edge and a C-shaped edge. The C-shaped edge of the shoe heel body extends upward to form a shoe upper. The shoe heel body and the shoe upper are 3D-printed integral lattice structures. The edge surfaces of the I-shaped leading edge of the shoe heel body and the shoe upper are 3D-printed edge frames.

[0007] Furthermore, the lattice structure is composed of several layers of geometric grids from top to bottom, and several connecting pillars are provided between adjacent geometric grid layers, with the two ends of the connecting pillars located at the grid intersections of the geometric grid layers.

[0008] Furthermore, the edge frame is a 3D printed solid structure, and the edge frame and the lattice structure are integrally printed.

[0009] Furthermore, the edge frame of the I-shaped leading edge is provided with an adhesive end face.

[0010] Furthermore, the bonding end face is a sloping surface.

[0011] A shoe sole consists of three parts: the forefoot, the arch, and the heel, wherein the heel is the aforementioned heel and is bonded to the arch.

[0012] Furthermore, the forefoot and arch are integrally formed and are made of foam material.

[0013] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages:

[0014] Compared to the heel of a traditional shoe sole, the heel of this invention is made as a separate part using 3D printing technology. This allows it to not only be used as a separate part in combination with other materials for the forefoot and arch of the sole, but also to be integrally 3D printed with the heel counter, providing better support and protection for the ankle, reducing the risk of misalignment and ankle sprains. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the heel of the shoe according to this utility model.

[0016] Figure 2 for Figure 1 Cross-sectional view along the AA direction.

[0017] Figure 3 This is a cross-sectional view of the sole of the shoe according to this utility model.

[0018] The following are the labels in the figure: sole 10, heel body 20, lattice structure 21, geometric grid layer 211, connecting pillar 212, edge frame 22, adhesive end face 221, and heel counter 23. Detailed Implementation

[0019] The specific implementation of the present invention will now be described with reference to the accompanying drawings.

[0020] Reference Figure 1 and Figure 3A 3D-printed shoe heel and sole, wherein the sole 10 is composed of three parts: the forefoot, the arch, and the heel. The forefoot and arch can be molded as a single piece, and are preferably made of traditional foam materials. The heel is 3D printed separately using elastic materials such as rubber, and then glued to the arch of the sole 10.

[0021] Reference Figure 1 and Figure 2 The shoe heel includes a heel body 20. The edge of the heel body 20 is a D-shaped structure composed of an I-shaped leading edge and a C-shaped edge. The C-shaped edge of the heel body 20 extends upward to form a heel counter 23. The heel body 20 and the heel counter 23 are 3D printed integral lattice structures 21. The edge surfaces of the I-shaped leading edge of the heel body 20 and the heel counter 23 are 3D printed edge frames 22. The lattice structure 21 and the edge frame 22 are also 3D printed integrally. The edge frame 22 is a solid structure, which provides shaping and support compared to the lattice structure 21. Furthermore, to better facilitate the bonding of the heel body 20 to the arch of the sole 10, in this embodiment, the edge frame 22 of the I-shaped leading edge of the heel body 20 is provided with a bonding end face 221. The bonding end face 221 is preferably a sloped surface, thereby increasing the actual bonding area within a limited space.

[0022] Reference Figure 1 and Figure 2 The lattice structure 21 is composed of several layers of geometric grid layers 211 from top to bottom. Several connecting pillars 212 are provided between adjacent geometric grid layers 211, with both ends of the connecting pillars 212 located at the intersections of the grids of the geometric grid layers 211. In this embodiment, the geometric grid layers 211 have a three-layer structure, with the grids of adjacent geometric grid layers 211 arranged in a staggered manner. Compared to the traditional design where the upper and lower grids correspond one-to-one, the staggered arrangement of the geometric grid layers 211 results in a complex internal support structure within the lattice structure 21, providing better vibration damping performance and load-bearing stability.

[0023] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A 3D-printed shoe heel, characterized in that: The shoe includes a heel body, the edge of which is a D-shaped structure composed of an I-shaped leading edge and a C-shaped edge. The C-shaped edge of the heel body extends upward to form a heel counter. The heel body and heel counter are 3D printed integral lattice structures, and the I-shaped leading edge and the edge surface of the heel counter are 3D printed edge frames.

2. The 3D-printed shoe heel according to claim 1, characterized in that: The lattice structure is composed of several layers of geometric grids from top to bottom, with several connecting pillars between adjacent geometric grid layers. The two ends of the connecting pillars are located at the grid intersections of the geometric grid layers.

3. The 3D-printed shoe heel according to claim 2, characterized in that: The edge frame is a solid 3D printed structure, and the edge frame and the lattice structure are printed as a single unit.

4. The 3D-printed shoe heel according to claim 1, characterized in that: The edge frame of the I-shaped leading edge is provided with an adhesive end face.

5. A 3D-printed shoe heel according to claim 4, characterized in that: The bonding end face is a sloping surface.

6. A shoe sole, comprising three parts: the forefoot, the arch, and the heel, characterized in that: The heel is the heel described in claims 1 to 5, and the heel is bonded to the arch of the foot.

7. A shoe sole according to claim 6, characterized in that: The forefoot and arch are integrally molded and are made of foam material.

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