Sole with adjustable rigidity and shoe

Abstract

The utility model discloses a sole with adjustable rigidity, which comprises an outsole and a midsole which are sequentially arranged from top to bottom, the outsole and the midsole are bonded together, the upper end of the midsole is provided with an embedding groove, an insole is embedded in the embedding groove, the bottom of the insole is bonded with a rigid support plate, and the rigid support plate is connected with the outsole and the midsole. The insole is provided with an embedded groove, the rigid supporting plate is arranged between the embedded groove and the insole, the Shore hardness C of the insole ranges from 38 degrees to 45 degrees, the thickness of the insole ranges from 10 mm to 30 mm, the thickness of the rigid supporting plate ranges from 0.6 mm to 1.5 mm, the Shore hardness C of the insole ranges from 38 degrees to 45 degrees, and the thickness of the insole ranges from 10 mm to 20 mm. The depth of the embedded groove is equal to the sum of the thickness of the insole and the thickness of the rigid supporting plate, and the shape and the size of the embedded groove are matched with the shape and the size of the insole respectively. According to the shoe sole with the adjustable rigidity and the shoe, the overall longitudinal rigidity of the shoe sole is adjusted to adapt to different crowds and exercise types, so that the shoe sole has better cushioning performance and exercise performance.

Description

Technical Field

[0001] This utility model relates to the field of footwear technology, specifically to a shoe sole and shoe with adjustable stiffness. Background Technology

[0002] Existing shoe soles are made of the same or several types of shock-absorbing materials, and their softness and hardness are relatively constant. In daily life, the feet need to face different levels of exercise such as walking, standing, running, and jumping. Different levels of exercise have different requirements for the cushioning ability of the shoe sole, and different people have different requirements for the softness and hardness of the shoe sole. Because the softness and hardness of the existing shoes are relatively constant, they cannot adapt to the cushioning requirements of various levels of exercise, nor can they adapt to the softness and hardness requirements of different people.

[0003] Shoe soles generally consist of a midsole and an outsole. With the development of midsole materials and technologies, such as supercritical foaming technology, the density of midsoles is decreasing while their elasticity is improving. Combined with the use of carbon fiber plates, this is becoming increasingly common in the field of athletic shoes. The carbon fiber plate mainly plays a role in balancing the midsole materials and improving stability. It also enhances athletic performance by increasing the lever arm of the ankle joint during push-off through the rigidity of the carbon plate. Typically, the carbon plate is embedded within the midsole and is fixed in place. However, the stiffness of a shoe may be suitable for some people or sports types, but not for others. If the stiffness is too low, the improvement in athletic performance will not be significant, while if the stiffness is too high, it can easily cause sports injuries, such as Achilles tendon injuries. Utility Model Content

[0004] The purpose of this invention is to provide a shoe sole and shoe with adjustable stiffness, which can adapt to different people and sports by adjusting the overall longitudinal stiffness of the sole, so that the sole has better cushioning performance and sports performance.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] An adjustable stiffness shoe sole includes an outsole and a midsole arranged sequentially from top to bottom. The outsole and the midsole are bonded together. An insole is embedded in the upper end of the midsole. A rigid support plate is bonded to the bottom of the insole and disposed between the insole and the insole. The midsole has a Shore hardness C of 38-45 degrees and a thickness of 10-30 mm. The rigid support plate has a thickness of 0.6-1.5 mm. The insole has a Shore hardness C of 38-45 degrees and a thickness of 10-20 mm. The depth of the insole is equal to the sum of the thickness of the insole and the thickness of the rigid support plate. The shape and size of the insole are adapted to the shape and size of the insole.

[0007] The outsole is either a rubber outsole or a CPU (cast polyurethane elastomer) outsole.

[0008] The midsole is an EVA midsole, a TPEE midsole, or a PEBA midsole.

[0009] The rigid support plate is a carbon fiber plate, a nylon plate, or a composite plate made of nylon and glass fiber.

[0010] The rigid support plate is a T500 carbon plate, a T600 carbon plate, or a T700 carbon plate.

[0011] The insole is an EVA insole, a TPEE insole, or a PEBA insole.

[0012] The thickness of the rigid support plate is 0.8 mm, 1.0 mm, or 1.2 mm.

[0013] A shoe includes the aforementioned sole and an upper disposed on the sole.

[0014] With the above structure, this utility model provides an adjustable-stiffness sole and shoe. The insole and rigid support plate are embedded in the groove. The appropriate thickness and hardness of the midsole, rigid support plate, and insole can be selected according to different users or sports types. Furthermore, the rigid support plate and insole can be replaced, thereby adjusting the overall longitudinal stiffness of the sole to better suit the individual needs of runners. By combining the sole material and the rigid support plate, a new type of running shoe with good cushioning effect is obtained, which can effectively reduce vertical impact force, shorten push-off time, and improve athletic performance.

[0015] Furthermore, the outsole is a rubber outsole or a CPU (cast polyurethane elastomer) outsole, which serves to provide wear resistance and slip resistance.

[0016] Furthermore, the midsole is an EVA midsole, a TPEE midsole, or a PEBA midsole, which has good stability and durability.

[0017] Furthermore, the insole is an EVA insole, TPEE insole, or PEBA insole, which has good stability and durability, and excellent cushioning and rebound performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an adjustable stiffness shoe sole according to the present invention;

[0019] Figure 2 This is a structural schematic diagram of a shoe according to the present invention;

[0020] Figure 3 This is an exploded structural diagram of a shoe according to the present invention.

[0021] In the picture:

[0022] Major bottom 1; Intermediate bottom 2;

[0023] Embedded groove 21; rigid support plate 3;

[0024] 4. Insole; 5. Upper. Detailed Implementation

[0025] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0026] A type of shoe sole with adjustable stiffness, such as Figure 1 As shown, the outsole consists of an outsole 1 and a midsole 2 arranged sequentially from top to bottom. Outsole 1 and midsole 2 are bonded together with adhesive. Specifically, outsole 1 is a rubber outsole or a CPU (cast polyurethane elastomer) outsole, providing wear resistance and slip resistance. Midsole 2 is made of supercritical foam materials such as EVA, TPEE, or PEBA, offering good stability and durability. Outsole 1 can be a one-piece outsole or a two-piece outsole.

[0027] The upper end of the midsole 2 has an embedding groove 21, within which an insole 4 is embedded. A rigid support plate 3 is glued to the bottom of the insole 4, positioned between the embedding groove 21 and the insole 4. The rigid support plate 3 is made of carbon fiber, nylon, or a composite of nylon and glass fiber. The rigid support plate 3 is shovel-shaped or other irregularly shaped. Preferably, the insole 4 is an EVA, TPEE, or PEBA insole, which offers good stability and durability, as well as excellent cushioning and rebound performance. Preferably, the rigid support plate 3 is a T500, T600, or T700 carbon plate, providing stable support and propulsion for the foot.

[0028] The midsole 2 has a Shore A hardness (C) of 38-45 degrees and a thickness of 10-30 mm. The rigid support plate 3 has a thickness of 0.6-1.5 mm. Preferably, the rigid support plate 3 has a thickness of 0.8 mm, 1.0 mm, or 1.2 mm. The thicker the rigid support plate 3, the higher its flexural strength, the stronger its propulsion, and the more robust the shoe's performance. However, this also places greater demands on the user's ankle strength.

[0029] The insole 4 has a Shore hardness C of 38~45 degrees and a thickness of 10~20 mm, thus taking into account both shock absorption and comfort when stepping on it. The depth of the groove 21 is equal to the sum of the thickness of the insole 4 and the thickness of the rigid support plate 3. The shape and size of the groove 21 are adapted to the shape and size of the insole 4.

[0030] A type of shoe, such as Figures 2-3As shown, the shoe includes the aforementioned sole and the upper 5 disposed on the sole, including the outsole 1 and the midsole 2 disposed sequentially from top to bottom. The midsole 2 is fitted with a rigid support plate 3 and an insole 4. The upper 5 and the midsole 2 are bonded together with glue.

[0031] Biomechanical comparative tests on the sole of this invention were conducted in the laboratory, revealing that, compared to ordinary one-piece soles, the comfort is significantly improved after adjusting the rigid support plate 3 and insole 4 with appropriate materials and thicknesses. The adjusted high-rigidity sole can significantly shorten the support period after landing, increase the lever arm of the ankle joint during push-off, and increase its torque. The low-rigidity sole can significantly reduce the tension on the Achilles tendon, reducing the occurrence of sports injuries. Runners can choose to change to suitable insoles according to their actual exercise needs.

[0032] 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 stiffness-adjustable sole comprising an outsole and a midsole disposed in order from top to bottom, the outsole and the midsole being bonded together, characterized in that: The upper end of the middle sole is provided with an embedding groove, and an insole is embedded in the embedding groove. The bottom of the insole is bonded with a rigid support plate, and the rigid support plate is arranged between the embedding groove and the insole. The Shore C hardness of the middle sole is 38-45 degrees, the thickness of the middle sole is 10-30 mm, the thickness of the rigid support plate is 0.6-1.5 mm, the Shore C hardness of the insole is 38-45 degrees, the thickness of the insole is 10-20 mm, the depth of the embedding groove is equal to the sum of the thickness of the insole and the thickness of the rigid support plate, and the shape and size of the embedding groove are matched with the shape and size of the insole respectively.

2. The adjustable stiffness sole of claim 1, wherein: The outsole is a rubber outsole or a CPU outsole.

3. The adjustable stiffness sole of claim 1, wherein: The middle sole is an EVA middle sole, a TPEE middle sole or a PEBA middle sole.

4. The adjustable stiffness sole of claim 1, wherein: The rigid support plate is a carbon fiber plate, a nylon plate or a composite plate composed of nylon and glass fiber.

5. The adjustable stiffness sole of claim 1, wherein: The rigid support plate is a T500 carbon plate, a T600 carbon plate or a T700 carbon plate.

6. The adjustable stiffness sole of claim 1, wherein: The insole is an EVA insole, a TPEE insole or a PEBA insole.

7. The adjustable stiffness sole of claim 1, wherein: The thickness of the rigid support plate is 0.8 mm, 1.0 mm or 1.2 mm.

8. A shoe comprising a rigid adjustable sole as claimed in claim 1 and an upper arranged on the sole.

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