Sole and shoe

Abstract

The utility model discloses a sole which sequentially comprises an outer sole, a middle sole and an inner sole from bottom to top, both the middle sole and the inner sole are elastic bodies, and a plurality of deformation grooves which are distributed at intervals in the longitudinal direction are formed in the upper surface of the middle sole. The inner sole comprises a base part and a plurality of protruding parts, the upper side of the middle sole is covered with the base part in a sheet shape, and the protruding parts are connected to the lower side of the base part and embedded into the deformation grooves. On the basis, the utility model further discloses a shoe which is provided with the sole. The middle sole and the inner sole are elastic bodies and can be finely adjusted according to changes of feet of a person, the deformation groove is formed in the middle sole, the longitudinal bending performance of the sole is further improved, meanwhile, the protruding portion on the lower side of the inner sole is embedded into the deformation groove, and therefore on the premise that the overall supporting performance is guaranteed and excessive deformation of the middle sole is avoided, the sole can be conveniently and rapidly bent. The shoe is adaptive to the foot length change of a wearer, fits the dynamic change of the foot, and improves the wearing comfort.

Description

Technical Field

[0001] This utility model relates to the field of shoe sole technology, and in particular to a shoe sole and a shoe. Background Technology

[0002] Shoe size is a standardized system for measuring shoe size and matching human foot dimensions. Whether the shoe size is correct or not directly affects the fit of the shoe, impacting the wearer's foot health, comfort, and safety. Therefore, when shoe size deviates, it needs to be replaced promptly, which is especially important for children and adolescents during their critical foot development period. Compared to adults, children and adolescents' feet grow faster, often requiring more frequent replacements of larger shoe sizes. However, frequent shoe replacements are costly, and the break-in period after changing shoes can also affect foot comfort.

[0003] In response, some shoe manufacturers have launched variable-size shoes to accommodate rapidly growing feet. For example, patent CN202019867U discloses variable-size shoe accessories and shoes, with some models using removable partial pads to adjust the size of the shoe's inner cavity and thus change the shoe size. Another example is patent CN113749350B, which discloses length-adjustable stretch shoes that use a stretchable structure to adjust the shoe length. These shoes can more accurately adapt to slight changes in foot length, but the complex sole structure and the need for rigidity in the core components enabling the stretch to ensure adjustment stability limit the natural flexion of the sole, affecting natural flexion during gait and potentially causing a foreign body sensation.

[0004] Therefore, the question arises as to how to better adapt to the dynamic changes of the foot while accommodating subtle variations in foot length. Utility Model Content

[0005] The purpose of this invention is to provide a sole and shoe that can meet the wearer's size change needs and better conform to the dynamic changes of the foot, providing a comfortable wearing experience.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A shoe sole comprising, from bottom to top, an outsole, a midsole, and an insole, wherein the midsole and the insole are both elastomers, and the upper surface of the midsole has a plurality of longitudinally spaced deformation grooves; the insole includes a base and a plurality of protrusions, the base being a sheet covering the upper side of the midsole, and the protrusions being connected to the lower side of the base and embedded in the deformation grooves.

[0008] Furthermore, the deformation groove extends laterally through the bottom.

[0009] Furthermore, the protrusion occupies 70%-100% of the corresponding deformation groove space.

[0010] Furthermore, the insole has greater ductility than the midsole.

[0011] Furthermore, the outsole is made of rubber or TPU material, the midsole is made of popcorn material, EVA material, TPEE material, or PEBA material, and the insole is made of silicone material.

[0012] Furthermore, the insole has a Shore hardness of 15C-35C, and the midsole has a Shore hardness of 40C-50C.

[0013] Furthermore, the base of the inner bottom and the protrusion are integrally formed using injection molding technology.

[0014] Furthermore, the thickness of the midsole is 10-30mm, the width of the deformation groove in the longitudinal direction of the midsole is 1-10mm, and the depth of the deformation groove is 5-20mm; the thickness of the base portion is 2-7mm, and the lower side of the base portion is provided with several protrusions extending downward by 5-15mm.

[0015] A shoe having the aforementioned sole.

[0016] This utility model has the following beneficial effects:

[0017] 1. The midsole and insole of this utility model are both elastomers, and the midsole is provided with deformation grooves, thereby increasing the longitudinal bending performance of the sole, making the sole adapt to changes in the wearer's foot length, and conforming to dynamic changes in the foot, providing a comfortable wearing experience and helping to maintain a healthy gait.

[0018] 2. The insole of this utility model has several protrusions, each of which is embedded in the deformation groove. This allows it to adapt to changes in foot length, absorb foot impact, enhance structural support performance, and prevent excessive deformation of the midsole. Attached Figure Description

[0019] Figure 1 This is a top view of the structure of this utility model (I).

[0020] Figure 2 for Figure 1 A schematic diagram of the cross-section along direction AA.

[0021] Figure 3 This is a top view of the structure of this utility model (II).

[0022] Figure 4 This is a side view of the structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the exploded structure of this utility model.

[0024] Explanation of key component symbols:

[0025] 100, Outsole; 200, Midsole; 210, Deformation Groove; 300, Insole; 310, Base; 320, Protrusion; T1, Midsole Thickness; T2, Base Thickness; W, Width of Deformation Groove in the Longitudinal Direction of the Midsole; H1, Depth of Deformation Groove; H2, Height of Protrusion. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] like Figure 1 , 2 The present invention discloses a shoe sole, which comprises, from bottom to top, an outsole 100, a midsole 200, and an insole 300. Both the midsole 200 and the insole 300 are elastomers. In this embodiment, the outsole 100 is adhered to the underside of the midsole 200 and directly contacts the ground.

[0029] The upper surface of the midsole 200 has several deformation grooves 210, which are arranged laterally on the midsole 200 and spaced apart longitudinally. The insole 300 includes a base 310 and several protrusions 320. The base 310 is sheet-like and covers the upper side of the midsole 200. The protrusions 320 are connected to the lower side of the base 310 and embedded in the deformation grooves 210. The lateral direction corresponds to the foot width, while the longitudinal direction corresponds to the foot length.

[0030] The deformation groove 210 can correspondingly increase the bending performance and flexibility of the sole in the longitudinal direction. When subjected to force, it undergoes elastic deformation in the longitudinal direction, guiding the sole to extend and bend in the longitudinal direction, so that the sole adapts to changes in the wearer's foot length, thereby changing the shoe size. The range of change is approximately 0-5mm, which can automatically adapt to the length of one shoe size.

[0031] Compared to rigid stretch structures, the Deformation Groove 210 ensures the sole's adaptability to dynamic foot movements, allowing it to conform to changes in foot movement, maintain a healthy gait, and provide a comfortable wearing experience. Furthermore, the streamlined structure of the Deformation Groove 210 makes the sole more durable than existing shoe models.

[0032] In this embodiment, multiple deformation grooves 210 are arranged at longitudinal intervals along the midsole 200 to increase the longitudinal variation of the entire sole and flexibly adapt to foot length. Figure 3-5 As shown, the deformation groove 210 can also penetrate the middle bottom 200 laterally, further enhancing the degree of freedom of deformation.

[0033] The insole 300, which works in conjunction with the midsole 200, is made of an elastic material with greater ductility than the midsole 200. The protrusions 320 of the insole 300 are correspondingly embedded in the deformation grooves 210, which can adapt to changes in foot length, absorb foot impact, and enhance structural support performance, preventing excessive deformation of the midsole 200 and affecting the feel of the foot, thus achieving a soft yet stable dynamic response.

[0034] In this embodiment, the insole 300 is made of silicone material, which has excellent elasticity, flexibility, and high variability. Its base 310 and protrusion 320 are integrally molded using injection molding technology to avoid seam weaknesses. The midsole 200 is made of popcorn material, EVA material, TPEE material, or PEBA material, preferably popcorn material, which has high resilience and is conducive to lightweight sole. The outsole 100 is made of rubber material or TPU material, preferably rubber material, which is wear-resistant and slip-resistant.

[0035] The insole 300 has a Shore hardness of 15C-35C, preferably 30C, and the midsole 200 has a Shore hardness of 40C-50C, preferably 45C. The thickness T1 of the midsole 200 is 10-30mm, preferably 20mm; the width W of the deformation groove 210 in the longitudinal direction of the midsole 200 is 1-10mm, preferably 6mm, and the depth H1 of the deformation groove 210 in the vertical direction is 5-20mm, preferably 15mm.

[0036] In the inner bottom 300, the thickness T2 of the base 310 is 2-7mm, preferably 3mm. The lower side of the base 310 has several downwardly extending protrusions 320, each 5-15mm high; that is, vertically, the height H2 of the protrusions 320 is 5-15mm, preferably 13mm. These protrusions 320 occupy 70%-100% of the corresponding deformation groove 210 space, that is, they completely fill the internal cavity of the deformation groove 210, or, while ensuring overall support performance, such as... Figure 4 As shown, a certain gap is maintained between the protrusion 320 and the inner wall of the deformation groove 210 to maximize the flexibility of the sole.

[0037] In summary, the sole exhibits excellent properties such as lightweight design, shock absorption and rebound, and slip resistance. Its structure, thickness, and hardness all conform to the anatomical structure of the foot and the developmental patterns of the foot. Furthermore, in laboratory trials, a prototype shoe with this sole was tested on several male children who regularly wear size 37 shoes, with a foot length difference of 3mm. According to the subjects' subjective feedback, compared to ordinary children's shoes, the prototype shoe with this sole was more comfortable, without any issues of pinching or heel slippage. This demonstrates that the sole performs well in adapting to foot length and providing excellent wearing comfort.

[0038] Example 2

[0039] Based on the above embodiment one, the present invention also provides a shoe having the above-described sole.

[0040] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims are within the scope of protection of the present invention.

Claims

1. A shoe sole, comprising, from bottom to top, an outsole, a midsole, and an insole, characterized in that: Both the midsole and the insole are elastic materials. The upper surface of the midsole has several longitudinally spaced deformation grooves. The insole includes a base and several protrusions. The base is sheet-like and covers the upper side of the midsole. The protrusions are connected to the lower side of the base and embedded in the deformation grooves.

2. The sole as described in claim 1, characterized in that: The deformation groove runs horizontally through the bottom.

3. The sole as described in claim 1, characterized in that: The protrusion occupies 70%-100% of the corresponding deformation groove space.

4. The sole as described in claim 1, characterized in that: The insole is more ductile than the midsole.

5. The sole as described in claim 4, characterized in that: The outsole is made of rubber or TPU material, the midsole is made of popcorn material, EVA material, TPEE material, or PEBA material, and the insole is made of silicone material.

6. The sole as described in claim 1, characterized in that: The insole has a Shore hardness of 15C-35C, and the midsole has a Shore hardness of 40C-50C.

7. The sole as described in claim 1, characterized in that: The base of the inner bottom and the protrusion are integrally formed by injection molding technology.

8. The sole as described in claim 1, characterized in that: The thickness of the midsole is 10-30mm, the width of the deformation groove in the longitudinal direction of the midsole is 1-10mm, and the depth of the deformation groove is 5-20mm; the thickness of the base is 2-7mm, and the lower side of the base is provided with several protrusions extending downward by 5-15mm.

9. A shoe, characterized in that: The sole has any one of claims 1-8.

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