Device with variable compression amplitude and shoes
By combining piston components, inner chamber components, and outer chamber components, the problem of fixing the cushioning performance of athletic shoe soles is solved, and dynamic adaptation of sole hardness is achieved to meet the needs of different weights and exercise intensities, thus improving the applicability of the product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LI NING SPORTS TECHNOLOGY (BEIJING) CO LTD
- Filing Date
- 2026-03-17
- Publication Date
- 2026-05-19
AI Technical Summary
Current athletic shoes have fixed cushioning performance in their soles, which cannot meet the personalized needs of different weights, exercise intensities, and usage scenarios.
The system employs a combination structure of piston assembly, inner chamber assembly, and outer chamber assembly. By rotating the outer chamber connecting ring to change the overlap of the adjustment holes, the extrusion volume of the elastomer can be controlled, thereby achieving dynamic switching of the sole hardness.
It achieves dynamic adaptation of sole hardness, making it suitable for people of different usage scenarios and weights, thus enhancing the product's applicability and performance.
Smart Images
Figure CN122056444A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of footwear manufacturing technology, specifically to a device and a shoe with variable compression amplitude. Background Technology
[0002] In the realm of footwear products, especially athletic shoes, sole performance has a profound impact on wearing experience and sports safety. The heel, as the primary area bearing the impact of the foot during exercise, is particularly crucial for its cushioning and support performance. With the diversification of sports and increased public awareness of healthy exercise, different groups have significantly different needs for sole performance in various sports scenarios. Professional athletes require precise impact attenuation protection during high-intensity exercise, ordinary users expect comfortable and adaptive cushioning when switching between walking and exercise, and special groups such as those with significant weight differences or those recovering from joint injuries desire adjustable cushioning to suit their individual conditions. Therefore, developing devices and shoes with variable compression amplitude is extremely important for improving the quality and usability of footwear products.
[0003] Currently, shoe sole cushioning technology mainly revolves around material modification and structural optimization. In terms of materials, high-elasticity EVA, ETPU, and elastic rubber are used to achieve shock absorption through their stress-strain characteristics. Low-hardness, high-elasticity EVA can achieve a high rebound rate, reducing the risk of sports injuries. Structurally, topology optimization designs are employed, such as lattice-zoned shock absorption technology, which uses different porosity structures for the heel, transition zone, and forefoot based on plantar pressure maps to improve impact attenuation and energy dissipation rates. In addition, there are structures such as air-suspension cushioning, magnetic levitation modules, and dual-suspension composite materials, which optimize cushioning and support balance through air cushion energy conversion, magnetic repulsion rebound, and combinations of materials with varying hardness.
[0004] However, existing technologies generally suffer from a core limitation: the fixed cushioning performance. Whether it's the elastic parameters of the material, the pre-defined zoning structure, or the air cushion volume, once the product is molded, its compression amplitude and mechanical response mode cannot be adjusted. This makes it difficult for the same pair of athletic shoes to meet the personalized needs of different weights, exercise intensities, and usage scenarios. For example, heavier individuals wearing conventionally cushioned soles may experience insufficient compression and inadequate impact attenuation; lighter individuals may experience instability due to overly soft soles. Furthermore, a single compression characteristic cannot simultaneously provide the soft comfort of walking and the rapid rebound of running. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this invention provides a device and shoe with variable compression amplitude, which solves the problem that the cushioning performance of existing sports shoes is fixed and cannot meet the personalized needs of different weights, different exercise intensities and different usage scenarios.
[0006] To achieve the above objectives, the present invention provides the following technical solution: The first aspect of the present invention provides a device for variable compression amplitude, including an elastic body, a piston assembly disposed on the outer side of the elastic body, the piston assembly being used to compress the elastic body by moving up and down during actual movement, an inner chamber assembly disposed on the outer side of the elastic body, the inner chamber assembly being used to connect to the piston assembly and to house and install the elastic body inside, and an outer chamber assembly disposed on the outer side of the inner chamber assembly, the outer chamber assembly being used to wrap the inner chamber assembly for rotatably adjusting the compression amplitude.
[0007] Preferably, the piston assembly includes a lower contact cover plate disposed on the outside of the elastomer, a connecting post fixedly connected to the outside of the lower contact cover plate, and an upper contact cover plate fixedly connected to the outside of the connecting post.
[0008] Preferably, the inner compartment assembly includes an inner compartment upper cover plate, which is slidably connected to the outside of the connecting column. An inner compartment connecting ring is fixedly connected to the outside of the inner compartment upper cover plate. A first adjustment hole is provided inside the inner compartment connecting ring, and an inner compartment lower cover plate is threadedly connected to the inside of the inner compartment connecting ring.
[0009] Preferably, the outer compartment assembly includes an outer compartment connecting ring, which is rotatably connected to the outside of the inner compartment connecting ring, and a second adjustment hole is provided inside the outer compartment connecting ring.
[0010] Preferably, the contact lower cover plate is slidably connected to the inner side of the inner compartment connecting ring, and the outer compartment connecting ring is rotatably connected to the outer side of the elastomer.
[0011] Preferably, the elastomer is hydrogenated nitrile butadiene rubber of Shore A45HA, which can completely fill the space below the inner chamber connecting ring without leaving any gaps.
[0012] A second aspect of the present invention provides a shoe with variable compression amplitude, including a midsole disposed on the outer side of a contact top cover, an upper disposed on the outer side of the midsole, and an outsole disposed on the outer side of the midsole.
[0013] Preferably, the main material of the shoe upper is made of polyester fiber fabric, reinforced with a hot melt film structure, and the fabric is made of high-elastic polyester yarn.
[0014] Preferably, the midsole is made of supercritical foamed polyether block amide material.
[0015] Preferably, the outsole is made of a blend of wear-resistant natural rubber and styrene-butadiene rubber.
[0016] This invention provides a device and shoe with variable compression amplitude. It has the following beneficial effects: 1. This invention solves the problem of difficult assembly due to the contact plate being larger than the center hole of the inner chamber cover plate by adopting a specific assembly method. The connecting column is first passed through the central hole of the inner chamber cover plate and then fixed to the upper cover plate. This achieves the technical effect of enabling the piston assembly and the inner chamber assembly to be smoothly initially connected, thus improving the ease of assembly of the device.
[0017] 2. This invention regulates the extrusion volume of the elastomer by changing the overlap between the second and first adjustment holes by rotating the outer chamber connecting ring. This solves the problem that existing shoe soles have fixed hardness and cannot adapt to different usage scenarios. It achieves the technical effect of dynamically switching the hardness of the shoe sole, adapting to various scenarios such as daily walking, different intensity sports, and people of different weights, thereby enhancing the applicability of the product.
[0018] 3. This invention solves the problem that a single component cannot simultaneously perform buffering and shock absorption as well as compression adjustment functions by having the piston assembly drive the elastic body to compress, the inner chamber assembly connects and places the elastic body, and the outer chamber assembly adjusts the compression amplitude. This achieves the technical effect of ensuring that the device can stably perform the functions of buffering and shock absorption and compression amplitude adjustment, thereby improving the performance of the product. Attached Figure Description
[0019] Figure 1 This is a perspective view of the present invention; Figure 2 A schematic diagram illustrating the structure of the elastomer of the present invention; Figure 3 This is a schematic diagram illustrating the structure of the inner compartment cover plate of the present invention; Figure 4 A schematic diagram illustrating the structure of the contact cover plate of the present invention; Figure 5 This is a schematic diagram illustrating the structure of the inner compartment lower cover of the present invention; Figure 6 This is a schematic diagram illustrating the structure of the inner compartment connecting ring of the present invention; Figure 7 The schematic diagram is provided to highlight the structure of the shoe upper of this invention; Figure 8 A schematic diagram illustrating the structure of the midsole of this invention.
[0020] Among them, 1. Piston assembly; 101. Contact upper cover plate; 102. Connecting column; 103. Contact lower cover plate; 2. Elastomer; 3. Inner compartment assembly; 301. Inner compartment upper cover plate; 302. Inner compartment connecting ring; 303. First adjustment hole; 304. Inner compartment lower cover plate; 4. Outer compartment assembly; 401. Outer compartment connecting ring; 402. Second adjustment hole; 5. Upper; 6. Midsole; 7. Outsole. Detailed Implementation
[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] Example 1: Please see the appendix Figure 1 -Appendix Figure 6 This invention provides a device with variable compression amplitude, including an elastic body 2, a piston assembly 1 disposed on the outer side of the elastic body 2, the piston assembly 1 being used to compress the elastic body 2 by moving up and down during actual movement, an inner chamber assembly 3 disposed on the outer side of the elastic body 2, the inner chamber assembly 3 being used to connect to the piston assembly 1 and to house the elastic body 2 inside, and an outer chamber assembly 4 disposed on the outer side of the inner chamber assembly 3, the outer chamber assembly 4 being used to wrap the inner chamber assembly 3 for rotatable adjustment of the compression amplitude.
[0023] Please see the appendix Figure 1 -Appendix Figure 6 In a preferred embodiment of the present invention, the piston assembly 1 includes a lower contact cover plate 103 disposed on the outside of the elastic body 2. A connecting post 102 is fixedly connected to the outside of the lower contact cover plate 103, and an upper contact cover plate 101 is fixedly connected to the outside of the connecting post 102. The inner chamber assembly 3 includes an upper inner chamber cover plate 301 slidably connected to the outside of the connecting post 102. When the upper contact cover plate 101 is subjected to force, it drives the lower contact cover plate 103 to move up and down, thereby compressing the elastic body 2. At the same time, during device assembly, it passes through the central circular hole of the upper inner chamber cover plate 301 to achieve the initial connection between the piston assembly 1 and the inner chamber assembly 3. The lower contact cover plate 103 contacts the elastic body 2 and applies pressure to the elastic body 2 under the action of the connecting post 102 to achieve compression of the elastic body 2. During device assembly, it is also held below the upper inner chamber cover plate 301 to assist in completing the connection between the piston assembly 1 and the inner chamber assembly 3. An inner compartment connecting ring 302 is fixedly connected to the outer side of the inner compartment upper cover plate 301. A first adjustment hole 303 is provided inside the inner compartment connecting ring 302. An inner compartment lower cover plate 304 is threadedly connected to the inner side of the inner compartment connecting ring 302. The outer compartment assembly 4 includes an outer compartment connecting ring 401, which is rotatably connected to the outer side of the inner compartment connecting ring 302. A second adjustment hole 402 is provided inside the outer compartment connecting ring 401. A contact lower cover plate 103 is slidably connected to the inner side of the inner compartment connecting ring 302. The outer compartment connecting ring 401 is rotatably connected to the outer side of the elastic body 2. The inner compartment connecting ring 302 provides installation space for the elastic body 2. A first adjustment hole 303 is provided on the side wall, which cooperates with the second adjustment hole 402 on the outer chamber connecting ring 401. By rotating the outer chamber connecting ring 401, the overlap of the two holes is changed, thereby controlling the extrusion volume of the elastomer 2. The elastomer 2 is made of Shore A45HA hydrogenated nitrile rubber, which can completely fill the lower space of the inner chamber connecting ring 302 without gaps. When the elastomer 2 is subjected to the pressure of the piston assembly 1, it is extruded according to the overlap of the adjustment holes on the outer chamber connecting ring 401 and the inner chamber connecting ring 302, and achieves buffering and shock absorption through its own elastic deformation to adapt to the buffering needs under different usage scenarios.
[0024] Specifically, the device consists of a piston assembly 1, an elastomer 2, an inner chamber assembly 3, and an outer chamber assembly 4, which achieve adjustable buffering and shock absorption through structural cooperation. In terms of force and transmission structure, piston assembly 1 includes contact upper cover plate 101, connecting column 102 and contact lower cover plate 103. During assembly, connecting column 102 passes through inner chamber upper cover plate 301. When under force, contact upper cover plate 101 drives contact lower cover plate 103 to slide in inner chamber connecting ring 302 through connecting column 102, thereby compressing elastic body 2 downward. In terms of the containment and adjustment mechanism, the bottom of the inner compartment connecting ring 302 of the inner compartment component 3 is connected to the inner compartment lower cover plate 304, providing installation space for the elastomer 2, and the side wall has a first adjustment hole 303. The outer compartment connecting ring 401 of the outer compartment component 4 is rotatably sleeved on the outside of the inner compartment connecting ring 302, and a second adjustment hole 402 is opened on it. The elastomer 2 is made of Shore A45HA hydrogenated nitrile rubber and is filled without gaps in the lower part of the inner chamber connecting ring 302. When it is compressed by the piston assembly 1, the overlap of the first adjustment hole 303 and the second adjustment hole 402 can be changed by rotating the outer chamber connecting ring 401. The extrusion volume of the elastomer 2 can be precisely controlled, and its elastic deformation can be used to achieve the buffering and shock absorption function to adapt to different scenarios.
[0025] Example 2: Please see the appendix Figure 7 -Appendix Figure 8This invention also provides a shoe with variable compression amplitude, including a midsole 6, which is disposed on the outside of the contact cover plate 101. An upper 5 is disposed on the outside of the midsole 6, and an outsole 7 is disposed on the outside of the midsole 6. A variable compression amplitude device is installed in the heel area of the midsole 6, specifically between the bottom surface of the heel area of the midsole 6 and the top surface of the outsole 7. The main material of the upper 5 is made of polyester fiber fabric, combined with a hot melt film reinforcement structure. The fabric uses high-elastic polyester yarn to provide wrapping and protection for the foot. Its material properties can conform to the contour of the foot, combining flexibility and support. At the same time, different materials and processes are used in different parts, such as composite TPU hot melt film in the toe, heel and shoelace hole areas, sandwich mesh fabric in the tongue, and spandex edging at the shoe opening, to improve wearing comfort and structural stability of key parts. The midsole 6 is made of supercritical foamed polyether block amide material, which transmits the pressure of the human foot to the piston assembly 1 during use. It has suitable hardness, balancing support and lightweight requirements. Its thickness design and radial grooves in the forefoot area enhance flexibility and adapt to the foot flexion requirements during walking and sports. The outsole 7 is made of a wear-resistant natural rubber and styrene-butadiene rubber blend, providing the contact interface between the shoe and the ground. It has good wear resistance and a good coefficient of friction on wet surfaces. Its thickness, the circular raised structure and anti-slip pattern design in the heel area corresponding to the device position, and the herringbone anti-slip design in the forefoot area can improve ground grip and meet the anti-slip requirements in different directions of movement. The chamfered edges of the outsole 7 can reduce the risk of tripping during walking or sports.
[0026] Specifically, its main structure, from the outside in, includes the outsole 7, the midsole 6, and the upper 5.
[0027] The upper is designed with high-elastic polyester fiber fabric to fit the contour of the foot, and TPU hot melt film is used to reinforce the structure in key areas such as the toe and heel. It is paired with a sandwich mesh tongue and spandex-bound shoe opening to comprehensively improve the fit, comfort and support stability of the shoe. In terms of force transmission and cushioning, the midsole 6 is wrapped around the outside of the contact cover plate 101 and is made of supercritical foamed polyether block amide material. It combines lightweight and appropriate support stiffness, and is responsible for accurately transmitting foot pressure to the piston assembly 1. The radial groove design in its forefoot area greatly enhances the bending flexibility of the shoe. In terms of ground contact and anti-slip, the outsole 7 uses a blend of natural and styrene-butadiene rubber for wear resistance. For complex sports forces, there are circular protrusions at the corresponding positions of the heel, and the forefoot is equipped with herringbone patterns to improve multi-directional grip. At the same time, the chamfered edges effectively reduce the risk of tripping during sports, ensuring overall safety and stability.
[0028] Working principle: First, during device assembly, because the size of the contact upper cover plate 101 is larger than the central circular hole of the inner chamber upper cover plate 301, it cannot be directly passed through the circular hole. Therefore, the connecting column 102 inside the piston assembly 1 must first be passed through the central circular hole of the inner chamber upper cover plate 301 from its bottom, so that one end of the connecting column 102 contacts the lower cover plate 103 below the inner chamber upper cover plate 301. Then, the contact upper cover plate 101 is fixed to the other end of the connecting column 102, achieving the initial connection between the piston assembly 1 and the inner chamber assembly 3. Subsequently, the elastic body 2 is inserted from the inner chamber... The bottom opening of the connecting ring 302 is slowly inserted into it. Then, the outer connecting ring 401 of the outer compartment component 4 is fitted onto the outside of the inner connecting ring 302. The outer edges of the inner upper cover plate 301 and the inner lower cover plate 304 are used to axially limit the outer connecting ring 401, ensuring that the outer connecting ring 401 can only rotate and cannot move up and down. After assembly, the overall height of the device is adapted to the installation space of the heel of a size 9.5 shoe. Then, the inner lower cover plate 304 is screwed into the bottom of the inner connecting ring 302 through the annular thread. After tightening, the main body of the device is assembled. After the main body of the device is assembled, it is installed onto the shoe body, which includes the upper 5, the midsole 6 and the outsole 7. The device is placed between the bottom surface of the heel area of the midsole 6 and the top surface of the outsole 7. Hot melt adhesive is applied to the contact surface. After embedding the device, it is kept at 130°C for 5 minutes. After the hot melt adhesive cools and solidifies, the device is firmly bonded to the midsole 6 and the outsole 7, thus completing the overall assembly of the shoe body. By rotating the outer chamber connecting ring 401 of the outer chamber assembly 4, the overlap between the second adjustment hole 402 and the first adjustment hole 303 inside the inner chamber connecting ring 302 is changed, thereby controlling the extrusion volume of the elastomer 2 and achieving dynamic switching of the sole hardness to adapt to different usage scenarios. When the outer chamber connecting ring 401 is rotated to the state where the second adjustment hole 402 and the first adjustment hole 303 are completely aligned, the extrusion volume of the elastomer 2 is at its maximum, the compression resistance of the device is at its minimum, the compression range can reach 12mm, corresponding to the softest sole hardness, suitable for daily use. Suitable for walking, people weighing less than 60kg, or low-intensity exercise; when rotated to the semi-overlapping state, the overlap area between the second adjustment hole 402 and the first adjustment hole 303 is 50%, the extrusion volume of the elastomer 2 is halved, the compression range of the device is 6-7mm, the sole hardness is medium, suitable for jogging, badminton, table tennis and other medium-intensity sports; when rotated to the completely offset state, the second adjustment hole 402 and the first adjustment hole 303 are completely closed, the elastomer 2 cannot be extruded, the compression range of the device is only 3-4mm, the sole hardness is the highest, suitable for high-intensity exercise, people weighing more than 80kg, or scenarios requiring strong support; During use, the upper contact cover plate 101 of the piston assembly 1 is in contact with the midsole 6 of the shoe, and the lower contact cover plate 103 is in contact with the elastomer 2. When a person walks or exercises while wearing the shoes, the foot applies pressure to the midsole 6. The pressure is transmitted to the upper contact cover plate 101, which drives the connecting column 102 and the lower contact cover plate 103 to move up and down, thereby compressing the elastomer 2 in the inner chamber connecting ring 302. The elastomer 2 is squeezed out according to the overlap between the second adjustment hole 402 and the first adjustment hole 303 to achieve cushioning and shock absorption. The inner chamber assembly 3 serves to connect the piston assembly 1 and install the elastomer 2. The outer chamber assembly 4 wraps around the inner chamber assembly 3 and adjusts the compression amplitude by rotation. All components work together to ensure that the device functions stably.
[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for variable compression amplitude, comprising an elastomer (2), characterized in that, A piston assembly (1) is provided on the outside of the elastic body (2). The piston assembly (1) is used to compress the elastic body (2) by moving up and down during actual movement. An inner chamber assembly (3) is provided on the outside of the elastic body (2). The inner chamber assembly (3) is used to connect the piston assembly (1) and place the elastic body (2) inside. An outer chamber assembly (4) is provided on the outside of the inner chamber assembly (3). The outer chamber assembly (4) is used to wrap the inner chamber assembly (3) and allow for rotatable adjustment of the compression amplitude.
2. The device for variable compression amplitude according to claim 1, characterized in that, The piston assembly (1) includes a lower contact cover plate (103), which is disposed on the outside of the elastomer (2). A connecting post (102) is fixedly connected to the outside of the lower contact cover plate (103), and an upper contact cover plate (101) is fixedly connected to the outside of the connecting post (102).
3. The device for variable compression amplitude according to claim 2, characterized in that, The inner compartment assembly (3) includes an inner compartment upper cover plate (301), which is slidably connected to the outside of the connecting column (102). An inner compartment connecting ring (302) is fixedly connected to the outside of the inner compartment upper cover plate (301). A first adjustment hole (303) is provided inside the inner compartment connecting ring (302). An inner compartment lower cover plate (304) is threadedly connected to the inside of the inner compartment connecting ring (302).
4. The device for variable compression amplitude according to claim 3, characterized in that, The outer compartment assembly (4) includes an outer compartment connecting ring (401), which is rotatably connected to the outside of the inner compartment connecting ring (302). A second adjustment hole (402) is provided inside the outer compartment connecting ring (401).
5. The device for variable compression amplitude according to claim 4, characterized in that, The contact lower cover plate (103) is slidably connected to the inner side of the inner compartment connecting ring (302), and the outer compartment connecting ring (401) is rotatably connected to the outer side of the elastic body (2).
6. The device for variable compression amplitude according to claim 5, characterized in that, The elastomer (2) is selected from Shore A45HA hydrogenated nitrile rubber, which can completely fill the lower space of the inner chamber connecting ring (302) without leaving any gaps.
7. A shoe with variable compression amplitude, characterized in that, The device for using a variable compression amplitude according to any one of claims 1-6 includes a midsole (6) disposed on the outside of a contact cover plate (101), an upper (5) disposed on the outside of the midsole (6), and an outsole (7) disposed on the outside of the midsole (6).
8. The shoe with variable compression amplitude according to claim 7, characterized in that, The main material of the shoe upper (5) is polyester fiber fabric, with a hot melt film reinforcement structure, and the fabric is made of high elastic polyester yarn.
9. The shoe with variable compression amplitude according to claim 7, characterized in that, The midsole (6) is made of supercritical foamed polyether block amide material.
10. The shoe with variable compression amplitude according to claim 7, characterized in that, The outsole (7) is made of a blend of wear-resistant natural rubber and styrene-butadiene rubber.