Dual color dual density sole
By employing a combination of a soft midsole, a hard midsole, and a TPU plate in the sole, along with cushioning components and a hollow design, the shoe enhances the cushioning stability and comfort of the two-tone, dual-density sole, making it suitable for various sports activities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XTEPCHINA
- Filing Date
- 2025-09-22
- Publication Date
- 2026-08-04
AI Technical Summary
Existing dual-color, dual-density soles have low cushioning stability, making them unsuitable for running shoes.
It adopts a structure consisting of a soft midsole, a full-length TPU plate, a hard midsole, and an outsole. The soft and hard midsoles are equipped with cushioning components, and the cushioning component design is similar to that of a Bosu ball. The midsole is dual-density and multi-scene adaptive, combined with the TPU plate and hollow structure to improve cushioning stability.
It improves the cushioning stability and comfort of the sole, making it suitable for various scenarios from daily commuting to fast-paced jogging, providing good support and balance.
Smart Images

Figure CN224584274U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shoe sole technology, specifically to a two-color, two-density shoe sole. Background Technology
[0002] Currently, dual-color, dual-density soles on the market generally consist of an outsole, a first midsole bonded to the outsole, and a second midsole bonded to the first midsole. The outsole is made of rubber, while the first and second midsoles use EVA of different densities, with the first midsole having a higher density than the second midsole. The first and second midsoles are different colors. Because the upper second midsole uses a low-density flexible material, although it improves rebound and comfort, the cushioning stability of the sole is relatively low, making it unsuitable for running shoes.
[0003] In view of this, the applicant conducted an in-depth study on the structure of the two-color, two-density sole, which led to this case. Utility Model Content
[0004] The purpose of this invention is to provide a dual-color, dual-density sole with relatively good cushioning and stability, achieving both comfort and stable support. The midsole used is a dual-density, multi-scenario adaptive midsole, suitable for everything from daily commuting to jogging.
[0005] To achieve the above objectives, the solution of this utility model is: A dual-color, dual-density sole includes a sole body comprising, from top to bottom, a soft midsole, a full-length TPU plate, a hard midsole, and an outsole. The soft midsole is recessed upwards to form an arched first cavity corresponding to the arch of the foot. A first cushioning element is disposed within the first cavity, and the shape of the first cushioning element is the same as that of an inverted Bosu ball. The hard midsole is recessed downwards to form an arched second cavity corresponding to the first cavity. A second cushioning element is disposed within the second cavity, and the shape of the second cushioning element is the same as that of an upright Bosu ball. The full-length TPU plate is sandwiched between the soft midsole and the hard midsole and is respectively attached to the first cushioning element and the second cushioning element.
[0006] The soft midsole has a lower hardness than the hard midsole.
[0007] The bottom is a sheet-like structure with a hollow center and an open rear end.
[0008] The full-length TPU plate has hollow structures at the positions corresponding to the forefoot, the first cushioning component, and the heel of the human body. Each hollow structure includes multiple hollow holes distributed in a ring shape from the inside to the outside.
[0009] The soft midsole is a different color from the hard midsole.
[0010] The size and shape of the bottom surface of the first damping element are the same as the size and shape of the top surface of the second damping element.
[0011] The thickness of the first damping component is greater than the thickness of the second damping component.
[0012] The bottom of the sole body is arc-shaped, and the front and rear ends of the sole body gradually curve upward.
[0013] The first and second shock absorbers each have multiple annular folds on their sides.
[0014] With the above structure, the dual-color dual-density shoe sole of this utility model has the following beneficial effects: 1. The upper layer of the sole is a soft midsole, which provides good comfort for the feet, while the lower layer of the sole is a hard midsole, which provides good support for the feet. 2. The soft midsole on the upper layer of the shoe can store energy and absorb weight and pressure. The full-length TPU plate in the middle conducts energy to the hard midsole on the lower layer through structural deformation. The hard midsole on the lower layer converts this energy into kinetic energy, which enables the shoe to propel itself forward. 3. The lower surface of the soft midsole is equipped with a first cushioning element, and the upper surface of the hard midsole is equipped with a second cushioning element. The design of the first and second cushioning elements is similar to that of a Bosu ball. Through a spherical structure, the midfoot support is enhanced, the pressure on the forefoot and heel is distributed, and the pressure on the sole of the foot is more balanced. This further enhances the balance, cushioning stability and comfort of the sole, making it suitable for running on various terrains.
[0015] Therefore, the midsole of this invention is a dual-density, multi-scenario adaptive midsole, which can be used for everything from daily commuting to jogging.
[0016] Furthermore, the outsole is a sheet-like structure with a hollow center and an open rear end, which minimizes deformation interference between the inner and outer sides of the sole, ensuring its stability.
[0017] Furthermore, the full-length TPU plate is provided with hollow structures at the positions of the forefoot, the first cushioning component, and the heel. Each hollow structure includes multiple hollow holes distributed in a ring from the inside out, which not only achieves the effect of lightweighting, but also avoids the full-length TPU plate from being too hard while ensuring stable support. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a two-color, two-density shoe sole according to the present invention; Figure 2 This is an exploded structural diagram of a two-color, dual-density shoe sole according to the present invention; Figure 3 This is another exploded structural diagram of a two-color, two-density shoe sole according to the present invention.
[0019] In the picture: Shoe sole body 1; soft midsole 11; Full-length TPU plate 12; Hard midsole 13; Outsole 14; First cavity 2; First damping component 3; Second damping component 4; 5. Hole cutouts. Detailed Implementation
[0020] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.
[0021] A two-color, dual-density sole, such as Figures 1-3 As shown, the sole body 1 has an arc-shaped bottom and the front and rear ends of the sole body 1 gradually curve upwards, so that the sole body 1 forms a rolling profile, which helps to provide the propulsion required for commuting and running.
[0022] The sole body 1 comprises, from top to bottom, a soft midsole 11, a full-length TPU plate 12, a hard midsole 13, and an outsole 14, all integrally injection molded. The outsole 14 is bonded to the hard midsole 13. The hardness of the soft midsole 11 is less than that of the hard midsole 13. Here, "soft" and "hard" refer to the relative softness and hardness relationship between the two midsoles, rather than specific softness and hardness. In other words, the soft midsole 11 is softer than the hard midsole 13, but the hard midsole 13 can also have a certain degree of softness. The specific materials of the soft midsole 11 and the hard midsole 13 can be set according to actual needs, such as using materials like EVA and ETPU. Moreover, the soft midsole 11 and the hard midsole 13 are different colors, thereby achieving a dual-color, dual-density effect for the midsole. The soft midsole 11 provides good comfort for the foot and can also store energy to absorb weight and pressure. The full-length TPU plate 12 in the middle conducts energy to the lower hard midsole 13 through structural deformation. The lower hard midsole 13 converts this energy into kinetic energy, realizing the forward propulsion of the sole. The full-length TPU plate 12 and the hard midsole 13 also play a role in stabilizing support.
[0023] The soft midsole 11 is recessed upwards to form an arched first cavity 2 corresponding to the position of the human foot arch. A first shock absorber 3 is provided in the first cavity 2. The bottom surface of the first shock absorber 3 is a flat surface, the top surface of the first shock absorber 3 is an arc surface that fits with the lower surface of the soft midsole 11, and the side surface of the first shock absorber 3 is a transitional curved surface that gradually slopes inward from bottom to top. The material of the first shock absorber 3 is the same as that of the soft midsole 11, and the structure of the first shock absorber 3 is the same as that of an inverted Bosu ball.
[0024] The hard midsole 13 is recessed downwards to form an arched second cavity corresponding to the position of the first cavity 2. A second shock absorber 4 is provided in the second cavity. The top surface of the second shock absorber 4 is a flat surface, and the bottom surface of the second shock absorber 4 is an arc surface that fits against the upper surface of the hard midsole 13. The side surface of the second shock absorber 4 is a transitional curved surface that gradually slopes inward from top to bottom. The material of the second shock absorber 4 is the same as that of the hard midsole 13. The structure of the second shock absorber 4 is the same as that of an upright Bosu ball.
[0025] Preferably, the size and shape of the bottom surface of the first shock absorber 3 are the same as the size and shape of the top surface of the second shock absorber 4, resulting in better overall appearance. Furthermore, the thickness of the first shock absorber 3 is greater than the thickness of the second shock absorber 4, making the soft midsole 11 softer. The height of the first cavity 2 is greater than the height of the second cavity, thus adapting to the thicknesses of the first shock absorber 3 and the second shock absorber 4, respectively.
[0026] The full-length TPU plate 12 is sandwiched between the soft midsole 11 and the hard midsole 13, and is respectively attached to the first cushioning element 3 and the second cushioning element 4. In this way, the first cushioning element 3, sandwiched between the soft midsole 11 and the full-length TPU plate 12, can deform with the movement of the foot in the first concave cavity 2, playing a role in balance and stable support. Similarly, the second cushioning element 4, sandwiched between the hard midsole 13 and the full-length TPU plate 12, can deform with the movement of the foot in the second concave cavity, also playing a role in balance and stable support.
[0027] Furthermore, multiple annular folds are provided on the sides of the first damping member 3 and the second damping member 4, which is beneficial to the damping deformation of the first damping member 3 and the second damping member 4.
[0028] Furthermore, the outsole 14 is a plate-shaped design with a hollow center and an open rear end. This allows the inner and outer sides of the outsole to deform independently during foot movement, ensuring stability. Ideally, the outsole 14 is made of rubber or CPU material.
[0029] Furthermore, the full-length TPU plate 12 has hollow structures at the positions corresponding to the forefoot, the first cushioning component 3, and the heel. Each hollow structure includes multiple hollow holes 5 arranged in a ring from the inside out. This not only achieves the effect of lightweighting, but also ensures stable support while preventing the full-length TPU plate 12 from being too hard.
[0030] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.
Claims
1. A two-color, two-density sole comprising a sole body, characterized by: The sole body comprises, from top to bottom, a soft midsole, a full-length TPU plate, a hard midsole, and an outsole, all sequentially combined. The soft midsole is recessed upwards to form an arched first cavity corresponding to the arch of the foot. A first cushioning element is disposed within the first cavity, and the shape of the first cushioning element is the same as that of an inverted Bosu ball. The hard midsole is recessed downwards to form an arched second cavity corresponding to the first cavity, and a second cushioning element is disposed within the second cavity. The top surface of the second cushioning element is flat, and the shape of the second cushioning element is the same as that of an upright Bosu ball. The full-length TPU plate is sandwiched between the soft midsole and the hard midsole, and is respectively attached to the first cushioning element and the second cushioning element.
2. The dual-color, dual-density sole according to claim 1, characterized in that: The soft midsole has a lower hardness than the hard midsole.
3. The dual-color, dual-density sole according to claim 1, characterized in that: The bottom is a sheet-like structure with a hollow center and an open rear end.
4. The dual-color, dual-density sole according to claim 1, characterized in that: The full-length TPU plate has hollow structures at the positions corresponding to the forefoot, the first cushioning component, and the heel of the human body. Each hollow structure includes multiple hollow holes distributed in a ring shape from the inside to the outside.
5. The dual-color, dual-density sole according to claim 1, characterized in that: The soft midsole is a different color from the hard midsole.
6. The dual-color, dual-density sole according to claim 1, characterized in that: The size and shape of the bottom surface of the first damping element are the same as the size and shape of the top surface of the second damping element.
7. The dual-color, dual-density sole according to claim 1, characterized in that: The thickness of the first damping component is greater than the thickness of the second damping component.
8. The dual-color, dual-density sole according to claim 1, characterized in that: The bottom of the sole body is arc-shaped, and the front and rear ends of the sole body gradually curve upward.
9. A two-color, dual-density sole according to claim 1, characterized in that: The first and second shock absorbers each have multiple annular folds on their sides.