Shock-absorbing sole and shoe

Abstract

The present invention discloses a shock-absorbing sole, which includes a sole body. A support part is arranged inside the sole body. The support part includes a first support plate and a second support plate. The first support plate is located above the second support plate, and the first support plate and the second support plate are arranged at intervals so as to form a hollow structure between the first support plate and the second support plate. One end of the first support plate is connected to one end of the second support plate so that the first end part of the support part forms a closed structure, and the other ends of the first support plate and the second support plate are separated so that the second end part of the support part forms an open structure. At the same time, a shoe including the sole is also disclosed. The shock-absorbing sole and the shoe of the present invention can enable the sole to have good stability and support effect while having excellent shock-absorbing effect and energy feedback effect, provide a forward propulsion force for the wearer, and improve the sports performance of the wearer.

Description

Technical Field

[0001] The present invention relates to the field of shoes, and particularly to a shock-absorbing sole and a shoe. Background Art

[0002] With the continuous improvement of living standards, people's requirements for the functionality and comfort of shoes are also increasing day by day. In order to improve certain sports performance of the sole, such as enhancing the support effect of the sole or improving the stability of the sole, etc., a relatively common method currently is to embed a support structure such as a support plate in the sole, and rely on the shape and setting position of the support structure to achieve stable support and smooth transition of the foot.

[0003] However, the support structure often has a relatively high stiffness. Therefore, although it can improve the stability and support effect of the sole to a certain extent, it will weaken the overall elastic deformation of the sole and affect the shock absorption and buffering effect of the sole. Especially for the heel part of the sole corresponding to the human foot heel, it is necessary to have good stability to prevent the heel from inverting or everting, and it is also necessary to have good shock absorption and buffering effect to reduce the sports injuries of the foot and leg. However, the existing sole structure and its support structure are difficult to meet the wearing needs of consumers. Summary of the Invention

[0004] The purpose of the present invention is to provide a shock-absorbing sole and a shoe, which organically combine a support structure and a shock-absorbing structure in the sole body. The specific technical solutions are as follows:

[0005] A shock-absorbing sole includes a sole body. A support part is arranged in the sole body. The support part includes a first support plate and a second support plate. The first support plate is located above the second support plate. The first support plate and the second support plate are arranged at intervals so as to form a hollow structure between the first support plate and the second support plate. One end of the first support plate and the second support plate is connected so that the first end of the support part forms a closed structure. The other end of the first support plate and the second support plate is separated so that the second end of the support part forms an open structure.

[0006] Further, the support part is arranged at the heel part of the sole body.

[0007] Further, the open structure at the second end of the support part is close to the heel of the sole body, and the first end of the support part is arranged towards the direction of the toe of the sole body.

[0008] Further, an open structure is formed at the heel part of the sole body, and the open structure at the second end of the support part is correspondingly arranged with the open structure at the heel part of the sole body.

[0009] Further, the opening structure at the second end of the support part is arranged near the midfoot part of the sole body, the first end of the support part is arranged towards the direction where the heel of the sole body is located, an opening structure is arranged at the midfoot part of the sole body, and the opening structure at the second end of the support part is arranged corresponding to the opening structure at the midfoot part of the sole body.

[0010] Further, the sole body includes a first elastic part and a second elastic part, the first elastic part is arranged above the second elastic part, and the support part is arranged between the first elastic part and the second elastic part.

[0011] Further, the middle position of the first end of the support part is recessed inward, and the two side parts of the first end near the inner and outer sides of the sole body protrude outward, so that the first end forms an arc-shaped curved surface structure.

[0012] Further, the two side edges of the first support plate near the inner and outer sides of the sole body are upturned, and the part between the two side edges of the first support plate is recessed downward, so that the first support plate forms an arc-shaped curved surface structure.

[0013] Further, the thickness of the first support plate is greater than the thickness of the second support plate, and the thickness of the first end is greater than the thickness of the first support plate.

[0014] Further, the first support plate of the support part includes a first area and a second area. The first area is the area of the first support plate close to the second end of the support part, and the second area is the area of the first support plate close to the first end of the support part. The first area and the second area are connected by transition, the second area and the first end are connected by transition, the thickness of the first area is less than the thickness of the second area, and the thickness of the second area is less than the thickness of the first end.

[0015] Further, the second support plate of the support part includes a third area and a fourth area. The third area is the area of the second support plate close to the first end of the support part, and the fourth area is the area of the second support plate close to the second end of the support part. The third area and the first end are connected by transition, the fourth area and the third area are connected by transition, the thickness of the fourth area is less than the thickness of the third area, and the thickness of the third area is less than the thickness of the first end.

[0016] Further, a strengthening component is arranged between the first support plate and the second support plate.

[0017] A shoe includes any one of the above-mentioned shock-absorbing soles.

[0018] The shock-absorbing sole and shoe of the present invention can enable the sole to have excellent shock-absorbing and energy feedback effects while having good stability and support effects. On the premise of ensuring stability, the sole undergoes elastic deformation at the initial stage of touchdown, can store a large amount of energy while absorbing shock, and quickly releases the energy when the deformation recovers, providing a forward propulsion force for the wearer, realizing a linkage force feedback mechanism, and thus improving the wearer's sports performance and providing a better sports experience for the wearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 6 is a side view of the first embodiment of the sole in the present invention.

[0020] Figure 2 FIG. 10 is an exploded view of the first embodiment of the sole in the present invention.

[0021] Figure 3 FIG. 14 is a three-dimensional view of the support part of the first embodiment in the present invention Figure 1 .

[0022] Figure 4 FIG. 20 is a three-dimensional view of the support part of the first embodiment in the present invention Figure 2 .

[0023] Figure 5 FIG. 26 is a top view of the support part of the first embodiment in the present invention.

[0024] Figure 6 FIG. 30 is a right view of the support part of the first embodiment in the present invention.

[0025] Figure 7 FIG. 34 is a front cross-sectional view of the support part of the first embodiment in the present invention.

[0026] Figure 8 FIG. 38 is a side view of the second embodiment of the sole in the present invention.

[0027] Figure 9 FIG. 42 is a side view of the third embodiment of the sole in the present invention.

[0028] Figure 10 FIG. 46 is a side view of the fourth embodiment of the sole in the present invention.

[0029] Figure 11 FIG. 50 is a schematic diagram of an impact test on the support part of the sole in the present invention.

[0030] Figure 12 FIG. 54 is a side view of a comparative sample shoe. DETAILED DESCRIPTION OF THE INVENTION

[0031] In order to better understand the purpose, structure and function of the present invention, the shock-absorbing sole and shoe of the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] The shock-absorbing sole in the present invention includes a sole body, and a support part is arranged inside the sole body. The support part can strengthen the support effect of the sole on the human foot, thereby improving the stability of the sole. At the same time, a structure prone to elastic deformation is formed on the support part, so that the support part and the sole body can undergo elastic deformation with the repeated stepping of the human foot, thereby improving the shock-absorbing and buffering effect of the sole, and at the same time being able to recover the energy when the foot lands and release it again when the human foot leaves the ground, providing a boosting force for the wearer.

[0033] The sole body can be an integrally formed structure, or a structure composed of two layers or multiple layers, or a structure formed by combining and splicing two or more pieces. Preferably, the sole body includes an upper sole and a lower sole. The upper sole is arranged on the upper part of the lower sole, and the support part is embedded between the upper sole and the lower sole; the upper sole and the lower sole can be integrally formed, or can be composed of two upper and lower parts.

[0034] The sole body includes a forefoot part, a midfoot part, and a heel part. Among them, the forefoot part is the part of the sole body corresponding to the front sole of the human foot, the midfoot part is the part of the sole body corresponding to the arch area of the human foot, and the heel part is the part of the sole body corresponding to the heel of the human foot. The support part can be arranged corresponding to the forefoot part, the midfoot part, or the heel part of the sole body, and is preferably arranged at the heel part of the sole body to provide shock absorption, support, and boosting force for the heel of the human foot.

[0035] The following will specifically describe the preferred embodiments of the present invention with reference to the accompanying drawings.

[0036] As Figure 1 and Figure 2 shown in Embodiment 1 of the present invention, the shock-absorbing sole in the present invention includes a sole body, which is formed by stacking and compounding a first elastic part 1 and a second elastic part 2 up and down. The first elastic part 1 is arranged on the upper part of the second elastic part 2. A support part 3 is arranged between the first elastic part 1 and the second elastic part 2, and the support part 3 is located at the heel part of the sole body.

[0037] Further, as Figures 3 to 7 shown, the support part 3 as a whole is a relatively flat C-shaped plate structure. Specifically, the support part 3 includes a first support plate 31 and a second support plate 32. The first support plate 31 is located above the second support plate 32, and the first support plate 31 and the second support plate 32 are arranged at intervals, so as to form a hollow structure between the two support plates; one end of the first support plate 31 and the second support plate 32 is connected, so that the first end 33 of the support part 3 forms a closed structure, and the other end of the first support plate 31 and the second support plate 32 is separated, so that the second end 34 of the support part 3 forms an open structure. This setting method makes the support part 3 as a whole form a semi-closed C-shaped support plate with a hollow structure inside.

[0038] Preferably, the whole supporting part 3 is of an integral structure, and the first supporting plate 31 at the upper part and the second supporting plate 32 at the lower part are smoothly connected through an arc surface. Of course, the supporting part 3 can also be formed by splicing.

[0039] Furthermore, as Figure 1 and Figure 2 shown, the first elastic part 1 and the second elastic part 2 of the sole body are arranged in an up-and-down fitting manner at the forefoot part and the midfoot part, and are arranged in an up-and-down separated manner at the heel part, so as to form a hollow structure at the heel part of the sole body. The C-shaped supporting part 3 is embedded in the hollow structure at the heel part of the sole body. The outer surface of the supporting part 3 is arranged in a fitting manner and fixedly connected with the lower surface of the first elastic part 1 and the upper surface of the second elastic part 2 of the sole body, and the inner surface of the supporting part 3 encloses a semi-closed hollow structure 4. The side of the sole body close to the inner side of the human foot is defined as the inner side of the sole body, and the side of the sole body close to the outer side of the human foot is defined as the outer side of the sole body. Then, the hollow structure 4 runs through the inner side and the outer side of the sole body, so that the inner and outer sides of the sole body are communicated with each other.

[0040] One end of the sole body corresponding to the toe of the human foot is defined as the toe of the sole body, and one end of the sole body corresponding to the heel of the human foot is defined as the heel of the sole body. Then, the first end 33 of the supporting part 3 is arranged towards the direction where the toe of the sole body is located, the second end 34 of the supporting part 3 is arranged towards the direction where the heel of the sole body is located, and the opening structure formed at the second end 34 is close to the heel of the sole body; the first elastic part 1 and the second elastic part 2 of the sole body are also arranged in a separated manner at the part close to the heel of the sole body, so that an opening structure is also formed at the heel part of the sole body.

[0041] Of course, when the sole body is an integrally formed sole structure, an opening structure can be directly arranged at the heel part of the sole body to correspond to the opening structure at the second end of the supporting part. Or, whether the sole body is an integrally formed structure or is composed of two or more layers in a composite manner, the heel part of the sole body can also be arranged as a closed structure and not in an open form, that is, the supporting part is covered inside the sole body.

[0042] Furthermore, the support portion 3 is made of a rigid material and is disposed at the heel portion of the sole body, which can stably support the heel position of the human foot. At the same time, this C-shaped semi-closed hollow structure 4 of the support portion 3 enables the support portion 3 to be more easily elastically deformed, improving the shock absorption effect and the resilience effect of the support portion 3. In addition, due to the embedding of the support portion 3, a semi-closed hollow structure is also formed inside the sole body, and this structure can also make the sole body more easily elastically deformed, improving the resilience of the sole body. At the same time, the embedded support portion 3 can improve the deformation recovery ability of the hollow structure on the sole body, enhancing the stability of the sole body.

[0043] Furthermore, as Figure 3 and Figure 4 shown, the first end portion 33 of the support portion 3 in a closed shape is an arc-shaped curved surface structure. Specifically, the two end portions of the first end portion 33 near the inner and outer sides of the sole body protrude outward, and the middle position of the first end portion 33 is recessed inward, so that the first end portion 33 forms an arc-shaped curved surface structure. On the one hand, the first end portion 33 of this shape can be engaged with the sole body, and at the same time, the contact area between the first end portion 33 and the sole body is increased, improving the fixing strength between the support portion 3 and the sole body; on the other hand, this set shape can make the first end portion 33 have higher strength. Since the support portion 3 repeatedly undergoes elastic deformation when being stepped on by the human foot, the first end portion 33 is the main stress portion. Therefore, improving the strength of the first end portion 33 is beneficial to extending the service life of the support portion 3 and enhancing the overall resilience and boosting effect of the support portion 3.

[0044] In addition, the first support plate 31 of the support portion 3 is also an arc-shaped curved surface structure. Specifically, as Figure 3 shown, the two side edges of the first support plate 31 near the inner and outer sides of the sole body are upturned, and the portion between the two side edges of the first support plate 31 is recessed downward, so that the first support plate 31 forms an arc-shaped curved surface structure. The advantage of this setting method is that since both the support portion 3 and the portion of the sole body where the support portion 3 is located are semi-closed hollow structures 4 and are easily deformed, relatively speaking, the stability of the sole body may be weakened, causing the heel portion of the sole body to undergo varus or valgus. However, the two side edges of the first support plate 31 of the support portion 3 are upturned and cover the inner and outer sides of the first elastic portion 1 of the sole body, which can improve the support effect on both the inner and outer sides of the support portion 3, thereby avoiding excessive varus or valgus of the sole body.

[0045] Furthermore, in order to improve the overall performance of the support portion 3, different parts of the support portion 3 have different thicknesses. Specifically, as Figure 7As shown in the figure, the first support plate 31 of the support part 3 is divided into a first area 311 and a second area 312. The first area 311 is the area of the first support plate 31 close to the opening structure of the support part 3, and the second area 312 is the area of the first support plate 31 close to the first end 33 of the support part 3. The first area 311 and the second area 312 are connected by a transition, and the second area 312 and the first end 33 are connected by a transition. The second support plate 32 of the support part 3 is divided into a third area 321 and a fourth area 322. The third area 321 is the area of the second support plate 32 close to the first end 33 of the support part 3, and the fourth area 322 is the area of the second support plate 32 close to the opening structure of the support part 3. The third area 321 and the first end 33 are connected by a transition, and the fourth area 322 and the third area 321 are connected by a transition. Among them, the thickness of the first area 311 of the first support plate 31 is less than the thickness of the second area 312, and the thickness of the second area 312 is less than the thickness of the first end 33. The thickness of the fourth area 322 of the second support plate 32 is less than the thickness of the third area 321, and the thickness of the third area 321 is less than the thickness of the first end 33. The overall thickness of the first support plate 31 is greater than the thickness of the second support plate 32, and the thickness of the first end 33 is greater than the thicknesses of the first support plate 31 and the second support plate 32. The first area 311, the second area 312, the first end 33, the third area 321, and the fourth area 322 are connected in sequence and have a smooth transition in thickness.

[0046] Specifically, the thickness of the first support plate 31 of the support part 3 is 0.5 - 2.5 mm, and the thickness gradually decreases from the second area 312 to the first area 311. The thickness of the second support plate 32 of the support part 3 is 0.5 - 2.5 mm, and the thickness gradually decreases from the third area 321 to the fourth area 322. The thickness of the first end 33 is 1.0 - 5.0 mm.

[0047] Since the first end 33 of the support part 3 is the main stress-bearing part, setting the thickness of the first end 33 to be relatively thick can improve the overall strength of the support part 3. Since both the first area 311 of the first support plate 31 and the fourth area 322 of the second support plate 32 are arranged close to the opening structure of the second end 34 of the support part 3, setting these two areas to be relatively thin structures is more conducive to the support part 3 undergoing elastic deformation, improving the resilience effect and shock absorption function of the support part 3 and the sole body. The second area 312 of the first support plate 31 and the third area 321 of the second support plate 32 also need to play a load-bearing role, so setting these two parts to be relatively thick structures helps to improve the support effect and stability. In addition, since the first support plate 31 is located at the upper part of the support part 3, is closer to the human foot, and is in a suspended state, it needs to have higher support strength and stability. Therefore, the overall thickness of the first support plate 31 is set to be greater than the overall thickness of the second support plate 32.

[0048] Specifically, when the support part 3 is in the natural state without being squeezed or stepped on, the distance between the first support plate 31 and the second support plate 32 is 5 - 30 mm; among them, the distance is preferably 15 - 25 mm. The support part 3 within this numerical range has a more suitable thickness for the human foot, and the wearing feeling is more natural and comfortable. The total length of the support part 3 is 5 - 20 cm; among them, the length is preferably 9 - 15 cm. The support part 3 within this numerical range has a length closer to the midfoot and heel parts of the human foot, and can provide a more comfortable support effect and boosting effect for the latter half of the human foot.

[0049] Furthermore, the support part 3 can be made of composite materials such as carbon fiber, glass fiber, and epoxy resin, which can provide strong support for the foot and make the sole body have good shock absorption and stability. At the same time, the characteristic of the three-stage non-uniform thickness distribution adopted by the support part 3 is more conducive to the sole body exerting the functions of boosting force, shock absorption, and stability.

[0050] Specifically, the specific formation method of the support part 3 is as follows:

[0051] 1. Laying method of the first support plate 31:

[0052] The thickness of a single layer of prepreg is 0.15 mm, and the total thickness of the first support plate 31 is 1.5 - 2.5 mm.

[0053] A total of 10 layers of prepreg are laid in the first area 311, with a thickness of 1.5 mm. The specific laying method from top to bottom is as follows: 3K*1 / 0°*1 / 45°*3 (glass fiber) / -45°*3 (glass fiber) / 0°*1 / 3K*1, and the remaining layers are carbon fiber.

[0054] A total of 17 layers of prepreg are laid in the second area 312, with a thickness of 2.5 mm. The specific laying method from top to bottom is as follows: 3K*1 / 0°*3 / 45°*3 (glass fiber) / 90°*3 / -45°*3 (glass fiber) / 0°*3 / 3K*1, and the remaining layers are carbon fiber.

[0055] The first support plate 31 of the support part 3 has good support and good toughness. During running, it can undergo large deformation to provide shock absorption and comfort, and at the same time improve the boosting force.

[0056] 2. Laying method of the first end part 33:

[0057] The thickness of a single layer of prepreg is 0.15 mm, and the total thickness of the first end part 33 is 3.5 mm; a total of 23 layers of prepreg are laid in the first end part 33. The specific laying method is as follows: 3K*1 / 0°*2 / 45°*3 / 90°*2 / -45°*3 / 0°*1 / 3K*1.

[0058] The first end portion 33 has good strength and support. During running, even if the support portion 3 undergoes large deformation, it will not break.

[0059] 3. Laying method of the second support plate 32:

[0060] The thickness of a single layer of prepreg is 0.15 mm, and the total thickness of the second support plate 32 is 1.5 - 2.0 mm.

[0061] A total of 13 layers of prepreg are laid in the third region 321, with a thickness of 2.0 mm. The specific laying method from top to bottom is as follows: 3K * 1 / 0° * 2 / 45° * 3 / 90° * 2 / -45° * 3 / 0° * 1 / 3K * 1.

[0062] A total of 10 layers of prepreg are laid in the fourth region 322, with a thickness of 1.5 mm. The specific laying method from top to bottom is as follows: 3K * 1 / 0° * 1 / 45° * 3 (glass fiber) / -45° * 3 (glass fiber) / 0° * 1 / 3K * 1, and the remaining layers are carbon fiber.

[0063] The second support plate 32 has good support and stability.

[0064] Furthermore, in the sole of the present invention, only one support portion 3 can be provided, or two or more support portions 3 can be provided simultaneously. Two or more support portions 3 can be arranged side by side at the same part of the sole body, such as the heel part or the forefoot part of the sole body, or can be provided simultaneously at multiple parts of the sole body, such as being provided simultaneously at the heel part and the forefoot part of the sole body. In addition, in addition to the way of being embedded inside the sole body in the above embodiments, the support portion 3 can also be provided on the upper or lower part of the sole body.

[0065] Furthermore, in the shock-absorbing sole and shoe of the present invention, the sole body is made of an elastic material, and the support plate is made of a hard material. Among them, the density of the first elastic portion 1 is 0.11 g / cm 3 , and the Shore C hardness is 40; the density of the second elastic portion 2 is 0.13 g / cm 3 , and the Shore C hardness is 45. The first elastic portion 1 and the second elastic portion 2 are preferably nylon elastomer materials. Selecting this material can provide a lighter and higher rebound function for the sole.

[0066] Specifically, the first elastic part 1 and the second elastic part 2 of the sole body can be made of one, two or more materials selected from nylon elastomer, polyurethane (thermoplastic polyurethane, cast polyurethane, millable polyurethane), thermoplastic polyester elastomer, ethylene-octene copolymer, ethylene-octene block copolymer, ethylene-vinyl acetate copolymer, styrene-butadiene-styrene block copolymer, hydrogenated styrene-butadiene-styrene block copolymer, high styrene rubber, bromobutyl rubber, cis-1,4-polybutadiene rubber, silicone rubber, ethylene propylene diene monomer rubber, natural rubber, nitrile rubber.

[0067] The support part 3 can be made of at least one of nylon, nylon elastomer, thermoplastic polyurethane, polyolefin thermoplastic elastomer, epoxy resin, phenolic resin, polycarbonate, polyetheretherketone, polyetherketoneketone, ABS (acrylonitrile-butadiene-styrene copolymer); or at least one of carbon fiber, aramid fiber, glass fiber, polyester fiber, polyimide fiber, ultra-high molecular weight polyethylene, poly(p-phenylene benzobisoxazole) fiber, basalt fiber is compounded with one, two or more of the above resins or elastomers.

[0068] Further, as Figure 8 shown in the second embodiment of the present invention, the shock-absorbing sole includes a sole body, which is composed of a first elastic part 1 and a second elastic part 2 stacked and compounded up and down, and the first elastic part 1 is arranged on the upper part of the second elastic part 2. A support part 3 is arranged between the first elastic part 1 and the second elastic part 2, and the support part 3 is located at the heel part of the sole body.

[0069] Similar to the first embodiment, the support part 3 is generally a relatively flat C-shaped plate structure, including a first support plate and a second support plate, and the first support plate and the second support plate are arranged at intervals, and a hollow structure 4 is formed between the two support plates. One end where the first support plate and the second support plate are connected is the first end of the support part 3, and the first end is a closed structure; the end where the first support plate and the second support plate are separated is the second end of the support part 3, and an open structure is formed at the second end.

[0070] Different from the first embodiment, a strengthening assembly 6 is arranged in the hollow structure 4 of the support part 3. The upper end of the strengthening assembly 6 abuts against the first support plate, and the lower end abuts against the second support plate, thereby improving the support strength and stability at the heel part of the sole body. One strengthening assembly 6 can be provided, or two or more can be provided. Preferably, it is made of an elastic material to maintain good resilience while improving the support and stability effects. Preferably, the strengthening assembly 6 is detachably arranged.

[0071] The preferred shape of the strengthening assembly 6 is Figure 8The waist-drum shape shown, that is, the upper and lower end faces where the strengthening component 6 contacts the first support plate and the second support plate are wider, and the middle position is narrower. This shape can not only increase the contact area between the strengthening component 6 and the support part 3 and improve the connection stability, but also enable the strengthening component 6 to have better elastic deformation ability and improve the rebound effect.

[0072] Further, as Figure 9 shown in Embodiment 3 of the present invention, the shock-absorbing sole includes a sole body, and the sole body is formed by stacking and laminating a first elastic part 1 and a second elastic part 2 up and down. The first elastic part 1 is arranged on the upper part of the second elastic part 2, and the support part 3 is arranged at the heel part of the sole body.

[0073] Similar to Embodiment 1, the support part 3 is generally a relatively flat C-shaped plate structure, including a first support plate and a second support plate. The first support plate and the second support plate are arranged at intervals, and a hollow structure 4 is formed between the two support plates. One end where the first support plate and the second support plate are connected is the first end of the support part 3, and the first end is a closed structure; the end where the first support plate and the second support plate are separated is the second end of the support part 3, and an opening structure is formed at the second end.

[0074] Different from Embodiment 1, the first end of the support part 3 is arranged towards the direction of the heel of the sole body, the second end of the support part 3 is arranged towards the direction of the toe of the sole body, and the opening structure formed at the second end is arranged close to the midfoot part of the sole body. An opening structure is formed at the midfoot part of the sole body. The opening structure is opened on the bottom surface of the sole body, and the opening structure at the second end of the support part 3 is arranged corresponding to the opening structure on the sole body.

[0075] Preferably, at the heel part of the sole body, the first elastic part 1 is hook-shaped, and a flat oval hollow structure is formed inside. The support part 3 is embedded in the hollow structure. The second elastic part 2 is attached to the forefoot part of the first elastic part 1. The end of the second elastic part 2 close to the midfoot part of the sole body is close to and separated from the end of the first elastic part 1 close to the midfoot part of the sole body to form the opening structure on the sole body.

[0076] Further, as Figure 10 shown in Embodiment 4 of the present invention, the shock-absorbing sole includes a sole body, and the sole body is formed by stacking and laminating a first elastic part 1 and a second elastic part 2 up and down. The first elastic part 1 is arranged on the upper part of the second elastic part 2.

[0077] Different from the first embodiment, the support portion 3 is provided at the forefoot part of the sole body. The first end portion of the support portion 3 is arranged in the direction of the toe of the sole body, and the second end portion of the support portion 3 is arranged in the direction of the heel of the sole body. The opening structure formed at the second end portion is arranged close to the midfoot part of the sole body. An opening structure is formed at the midfoot part of the sole body. The opening structure is opened on the bottom surface of the sole body. The opening structure at the second end portion of the support portion 3 is arranged corresponding to the opening structure on the sole body.

[0078] Furthermore, the soles in the first to fourth embodiments of the present invention further include an outsole 5. The outsole 5 is adhesively attached to the lower surface of the sole body to increase the wear resistance of the sole. The outsole 5 is a cast polyurethane, having excellent wear resistance, hardness (Shore A) 62, density 1.20 g / cm 3 , tensile strength 13.4 MPa, elongation at break 632%, right-angle tear strength 59.6 N / mm, Akron abrasion (1.61 km) 0.03 cm 3 , DIN abrasion 11 mm 3 , yellowing resistance grade 4, aging resistance grade 4.

[0079] Specifically, the outsole 5 can be made of one, two or more of cis-butadiene rubber, styrene-butadiene rubber, natural rubber, butyl rubber, nitrile rubber, isoprene rubber, chloroprene rubber, brominated butyl rubber, polyurethane (thermoplastic polyurethane, cast polyurethane, millable polyurethane), nylon elastomer, thermoplastic polyester elastomer.

[0080] The present invention also relates to a shoe, the sole of which is the shock-absorbing sole described above.

[0081] Furthermore, in order to verify the performance of the shock-absorbing sole and the shoe of the present invention, taking the shock-absorbing sole in the first embodiment of the present invention as a sample, as Figure 11 shown, the following impact test performance was carried out on the C-shaped support portion:

[0082] Table 1 Corresponding relationship between force value and deformation amount

[0083] Compressive force value (N) Deformation amount (mm) 1000N 9 mm 1500N 10.5 mm 2000N 11.3 mm 3683N 13.45 mm

[0084] When running, the heel part of the sole is the largest stress-bearing area, and the impact force received is 2-3 times the weight of the runner. Taking a 70 kg weight as an example, the impact force borne by the heel part is between 1372-2058 N. From the test results in Table 1, the C-shaped support part sample can meet the normal running use requirements. When the impact force is 2000 N, the deformation amount is 11.3 mm, and the first support plate and the second support plate do not come into contact with each other, indicating that the C-shaped support part sample has sufficient support, and the upper and lower layers of the plate do not collide during the movement process, and the support plate does not break, which can ensure the safety of the movement and provide sufficient support effect.

[0085] Taking the shock-absorbing sole in Embodiment 1 of the present invention as a sample, the performance test of the whole shoe is carried out, and the comparative sample shoe is Figure 12 The sole structure shown in which a one-piece support plate is embedded in the foam material midsole.

[0086] Impact test (ASTM F1976-13):

[0087] (Peak acceleration (Peak G) is used to evaluate the shock-absorbing performance of the shoe, the smaller the better; Energy return is used to evaluate the resilience of the shoe, the larger the better)

[0088] For the shoe in the present invention, the peak acceleration (Peak G) at the heel part is 8.07, and the energy return is 74.53%;

[0089] For the comparative sample shoe, the peak acceleration (Peak G) at the heel part is 9.46, and the energy return is 63.16%.

[0090] From the results of the impact test, it can be seen that the shock-absorbing sole and shoe of the present invention have more excellent shock-absorbing performance and better resilience.

[0091] The shock-absorbing sole and shoe of the present invention can make the sole have good stability and support effect while having excellent shock-absorbing effect and energy feedback effect. On the premise of ensuring stability, the sole undergoes elastic deformation at the initial stage of touchdown, can store a large amount of energy while shock-absorbing, and quickly releases energy when the deformation recovers, providing a forward propulsion force for the wearer, realizing a linkage force feedback mechanism, and then improving the wearer's sports performance and providing a better sports experience for the wearer.

[0092] The above further describes the present invention with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as a limitation on the essence and scope of the present invention. Various modifications made by those of ordinary skill in the art to the above embodiments after reading this specification all fall within the scope protected by the present invention.

Claims

1. A shock-absorbing sole, characterized in that, it includes a sole body, and a support part is arranged inside the sole body. The support part includes a first support plate and a second support plate. The first support plate is located above the second support plate, and the first support plate and the second support plate are arranged at intervals, so that a hollow structure is formed between the first support plate and the second support plate. One end of the first support plate and the second support plate is connected, so that the first end part of the support part forms a closed structure. The other ends of the first support plate and the second support plate are separated, so that the second end part of the support part forms an open structure. The middle position of the first end part of the support part is recessed inward, and the two parts of the first end part close to the inner side and the outer side of the sole body bulge outward, so that the first end part forms an arc-shaped curved surface structure. The thickness of the first support plate is greater than the thickness of the second support plate, and the thickness of the first end part is greater than the thickness of the first support plate, so as to improve the overall strength of the support part.

2. The shock-absorbing sole according to claim 1, characterized in that, the support part is arranged at the heel part of the sole body.

3. The shock-absorbing sole according to claim 2, characterized in that, the open structure of the second end part of the support part is close to the heel of the sole body, and the first end part of the support part is arranged towards the direction of the toe of the sole body.

4. The shock-absorbing sole according to claim 3, characterized in that, an open structure is formed at the heel part of the sole body, and the open structure of the second end part of the support part is arranged corresponding to the open structure at the heel part of the sole body.

5. The shock-absorbing sole according to claim 2, characterized in that, the open structure of the second end part of the support part is close to the midfoot part of the sole body, the first end part of the support part is arranged towards the direction of the heel of the sole body, an open structure is arranged at the midfoot part of the sole body, and the open structure of the second end part of the support part is arranged corresponding to the open structure at the midfoot part of the sole body.

6. The shock-absorbing sole according to any one of claims 1 to 5, characterized in that, the sole body includes a first elastic part and a second elastic part. The first elastic part is arranged above the second elastic part, and the support part is arranged between the first elastic part and the second elastic part.

7. The shock-absorbing sole according to claim 1, characterized in that, the two side edges of the first support plate close to the inner side and the outer side of the sole body are upturned, and the part between the two side edges of the first support plate is recessed downward, so that the first support plate forms an arc-shaped curved surface structure.

8. The shock-absorbing sole according to claim 1, characterized in that, the first support plate of the support part includes a first area and a second area. The first area is the area of the first support plate close to the second end part of the support part, and the second area is the area of the first support plate close to the first end part of the support part. The first area and the second area are connected in a transitional manner, and the second area and the first end part are connected in a transitional manner. The thickness of the first area is less than the thickness of the second area, and the thickness of the second area is less than the thickness of the first end part.

9. The shock-absorbing sole according to claim 1 or 8, characterized in that, The second support plate of the support part includes a third area and a fourth area. The third area is the area of the second support plate close to the first end of the support part, and the fourth area is the area of the second support plate close to the second end of the support part. The third area is transitionally connected to the first end, the fourth area is transitionally connected to the third area, the thickness of the fourth area is less than the thickness of the third area, and the thickness of the third area is less than the thickness of the first end.

10. The shock-absorbing sole according to claim 1, wherein, a reinforcing component is arranged between the first support plate and the second support plate.

11. A shoe, wherein, it includes the shock-absorbing sole according to any one of claims 1 to 10.

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