Composite structure sole and shoe

Abstract

The utility model discloses a sole with a composite structure, which comprises a midsole and a supporting piece, the midsole comprises a first elastic part, the supporting piece is arranged in the first elastic part, a plurality of hollow crystal lattices are formed in the supporting piece, and the crystal lattices are filled with the first elastic part, so that the first elastic part and the supporting piece form an integrated structure. According to the shoe sole with the composite structure, the supporting piece is arranged in the first elastic part of the middle sole, the first elastic part is filled in the crystal lattice of the supporting piece, and the first elastic part and the supporting piece form an integrated structure, so that the supporting, torsion resistance and stability of the shoe sole are better while the weight of a product is not increased, and the service life of the shoe sole is prolonged. The supporting piece is integrally arranged to be of a wedge-shaped structure, the supporting piece comprises a first face, a second face and a third face which are arranged in a continuous mode, the cross section of the supporting piece forms a triangle, and the stable supporting effect on the heel area and the middle foot area can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shoe field especially relates to a composite structure shoe sole and the shoe containing the composite structure shoe sole. BACKGROUND

[0002] For sports shoes, in addition to providing sufficient shock absorption protection for people in sports, ordinary sports enthusiasts need to avoid foot injuries to the greatest extent, and sports shoes have sufficient anti-rollover and anti-torsion performance, and if sports shoes lack side support or anti-torsion performance, additional force is needed to maintain stability during foot landing, which increases the fatigue of the human foot, and it is easier to sprain the foot when turning.

[0003] Because different people have different exercise habits and exercise methods, the ankle posture is also different when the foot lands during exercise, for runners with normal arches and normal running posture, when both feet land, the outsole will be close to parallel to the ground, but for runners with foot eversion, problems such as insufficient medial arch support will cause the foot to be excessively squeezed inward, which will cause the arch to collapse inward and the ankle to deflect inward. The current sports shoes need side support in the forefoot and heel areas, and need anti-torsion function in the middle waist area of the sports shoes, and the commonly used ways to enhance side support stability are two: one is to use an external plastic sheet, and the plastic sheet and the insole material are bonded together by adhesion to limit the outward expansion deformation of the insole material to enhance stability, and the other is to use higher density insole material and insole part bonding or one-piece forming.

[0004] The current two traditional production methods mainly have the following problems: first, the side plastic sheet only limits the outward expansion deformation of the insole material under compression, and the function of improving stability is limited; second, the plastic sheet needs to be separately molded, and the plastic sheet and the insole bonding process is complex; third, the plastic sheet and the insole are bonded with glue, which is not environmentally friendly; fourth, the double-density insole material needs to increase the secondary forming process. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a composite structure shoe sole, which enhances the side support stability and anti-torsion performance of the shoe sole by one-piece forming.

[0006] A composite structure shoe sole, comprising an insole and a support piece, the insole comprising a first elastic part, the support piece being arranged in the first elastic part, and a plurality of hollow lattices being formed in the support piece, the first elastic part being filled in the lattices to form an integrated structure with the support piece.

[0007] Further, the midsole comprises a forefoot region, a midfoot region and a heel region arranged in sequence, and the first elastic part is arranged on at least one of the forefoot region, the midfoot region and the heel region.

[0008] Further, the first elastic part comprises a first unit, a second unit and a third unit arranged in sequence, the first unit corresponds to the inner side of the midfoot region and the heel region, the second unit corresponds to the rear side of the heel region, and the third unit corresponds to the outer side of the heel region.

[0009] Further, the first part comprises a first free end and a first connecting end, the third part comprises a second free end and a second connecting end, the second connecting end and the first connecting end are connected through the second part, and the first part gradually tapers in the direction from the first connecting end to the first free end; and / or the third part gradually tapers in the direction from the second connecting end to the second free end.

[0010] Further, the density of the lattice in the first part is a first density, and the first density gradually decreases in the direction from the first connecting end to the first free end; and / or the density of the lattice in the third part is a second density, and the second density gradually decreases in the direction from the second connecting end to the second free end.

[0011] Further, the cross section of the support is triangular.

[0012] Further, the support comprises a first surface and a second surface, the first surface is arranged relative to the side surface of the first elastic part, and the second surface is arranged relative to the bottom surface of the first elastic part.

[0013] Further, the lattice comprises nodes and rods, the number of nodes is more than four and arranged on at least two surfaces, and each node is connected with at least three rods.

[0014] Further, the support is arranged in an integrated structure.

[0015] A shoe comprising the composite structure sole described above.

[0016] The composite structure sole has the following advantages.

[0017] 1. By arranging the support in the first elastic part of the midsole, a plurality of hollow lattices are formed in the support, the first elastic part is filled in the lattices, the first elastic part and the support form an integrated structure, so that the support, the torsion resistance and the stability of the sole are better without increasing the weight of the product, and the traditional component glue bonding is reduced, and the overall strength of the structure is improved.

[0018] 2、 the support piece is integrally provided as a wedge-shaped structure, the support piece comprises a first surface, a second surface and a third surface which are sequentially arranged, so that the cross section of the support piece forms a triangle, and the stable support effect on the heel area and the midfoot area can be realized;

[0019] 3、 the lattice structure of the support piece reduces the weight, but the support piece can still maintain high strength, the support piece has excellent strength-to-weight ratio, the stable support performance can be realized with the least material, and the lattice can effectively absorb and disperse impact energy, and the damping and anti-torsion effects of the sole are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a bottom view of the composite structure sole of the utility model.

[0021] Figure 2 It is a perspective view of the support piece in the composite structure sole of the utility model.

[0022] Figure 3 It is a side view of the composite structure sole of the utility model.

[0023] Figure 4 It is a sectional view of the composite structure sole of the utility model. DETAILED DESCRIPTION

[0024] In order to better understand the purpose, structure and function of the utility model, the composite structure sole and the shoe of the utility model are described in detail below in combination with the drawings.

[0025] As shown in the drawings, Figures 1 to 4 The composite structure sole comprises a midsole and a support piece 400, the midsole comprises a forefoot area 100, a midfoot area 200 and a heel area 300 which are sequentially arranged, one side of the sole body close to the inner side of the human foot is defined as the inner side of the sole body, one side of the sole body close to the outer side of the human foot is defined as the outer side of the sole body, one end of the sole body close to the human toe is defined as the front side of the sole body, and one end of the sole body close to the human heel is defined as the rear side of the sole body, the midsole comprises a first elastic part 10 and a second elastic part 20, the first elastic part 10 is arranged on at least one area of the inner side, the outer side, the front side and the rear side of the midsole, the part of the midsole except the first elastic part 10 is the second elastic part 20, the support piece 400 is arranged in the first elastic part 10, so as to support the midsole where the first elastic part 10 is located, a plurality of hollow lattices 500 are formed in the support piece 400, and then the first elastic part 10 is arranged in the lattices 500, so that the first elastic part 10 and the support piece 400 can be fused together without being bonded, an integrated structure is arranged, the process flow is reduced, and the environmental protection effect is realized.

[0026] Specifically, the first elastic part 10 includes a first unit 301, a second unit 302 and a third unit 303 arranged in sequence, the first unit 301 corresponds to the inner side of the midfoot region 200 and the heel region 300, the second unit 302 corresponds to the rear side of the heel region 300, and the third unit 303 corresponds to the outer side of the heel region 300. The support 400 has a curved strip-shaped structure as a whole, and includes a first part 401, a second part 402 and a third part 403 arranged in sequence, wherein the first part 401 is arranged in the first unit 301, the second part 402 is arranged in the second unit 302, and the third part 403 is arranged in the third unit 303. Thus, the support stability of the inner and outer sides and the rear side of the heel region 300 is enhanced, and the torsion resistance of the midfoot region 200 is improved.

[0027] As shown in Figure 2 , the first part 401 of the support 400 includes a first free end 404 and a first connecting end 406, and the third part 403 includes a second free end 405 and a second connecting end 407. The second connecting end 407 and the first connecting end 406 are connected through the second part 402. The first part 401 gradually tapers in the direction from the first connecting end 406 to the first free end 404, and the third part 403 gradually tapers in the direction from the second connecting end 407 to the second free end 405. That is, the diameter of the first part 401 and the third part 403 of the support 400 gradually decreases from back to front. It can be understood that a person skilled in the art can also gradually reduce the diameter of the first part 401 or the third part 403 from back to front according to actual needs.

[0028] The purpose of arranging the support 400 with the diameter gradually decreasing from back to front is that the first part 401 corresponds to the heel region 300 and the midfoot region 200, and the third part 403 corresponds to the heel region 300. When the human foot lands, the pressure on the sole is transmitted from back to front, and the support required by the heel region 300 gradually decreases from back to front. The inner side of the midfoot region 200 corresponds to the human arch, which does not need too much support, and the arch structure is stable enough and has self-adjusting ability. The arch is a complex arch structure maintained by foot bones, ligaments, muscles and other structures, which can effectively disperse body weight, absorb ground reaction force, and provide stability and cushioning. Therefore, the support 400 gradually tapers from back to front, so that the support gradually weakens, which not only ensures the support of the heel region 300, but also ensures the flexibility of the human arch, and saves material cost.

[0029] As shown in Figure 3 and Figure 4As shown, the support 400 is provided as a long strip-shaped wedge structure as a whole, and the support 400 includes a first surface 408, a second surface 409 and a third surface 410 arranged in sequence. The surface of the medial or lateral side of the midsole is defined as a side surface, and the surface of the midsole relative to the ground is defined as a bottom surface. The first surface 408 is arranged relative to the side surface of the first elastic part 10, the second surface 409 is arranged relative to the bottom surface of the first elastic part 10, and the two ends of the third surface 410 are connected to the first surface 408 and the second surface 409, respectively. Thus, the cross section of the support 400 forms a triangle, and the stability of the triangle structure is high. The first surface 408 is arranged vertically relative to the second surface 409. The vertical arrangement includes complete verticality and relative verticality with a certain angle deviation. As long as the stable support effect on the heel area 300 and the midfoot area 200 can be achieved.

[0030] Further, as shown in the drawings, Figure 4 As shown, the lattice 500 constituting the support 400 is a hollow three-dimensional structure with irregular shape, including nodes and rods. The number of nodes of each lattice 500 is set to four or more, and the multiple nodes constituting one lattice 500 are located at least on two different planes. Each node is connected to at least three rods, thereby forming a plurality of tetrahedrons or pentahedrons and other three-dimensional structures.

[0031] It should be noted that the lattice 500 is manufactured by 3D printing, which is also known as additive manufacturing. The working principle of 3D printing is mainly based on a digital model file, using materials such as powdered metal or plastic that can be bonded, and constructing objects through layer-by-layer printing. A plurality of lattices 500 are regularly or irregularly repeated in three-dimensional space to arrange and constitute a long strip-shaped wedge structure support 400. The inside of each lattice 500 constituting the support 400 is hollow, which reduces the amount of material used for the support 400 and reduces the weight of the support 400. Although the lattice 500 structure reduces the weight, it still maintains a relatively high strength. Therefore, the support 400 has an excellent strength-to-weight ratio, and can achieve stable support performance with the least amount of material. At the same time, the lattice 500 can effectively absorb and disperse impact energy, improving the shock absorption and anti-twist effect of the sole.

[0032] Further, the number of lattices 500 per unit volume is defined as the density of the lattice 500. The density of the lattice 500 in the first part 401 is the first density, and the density of the lattice 500 in the third part 403 is the second density. The first density gradually decreases from the direction of the first connecting end 406 to the first free end 404, and the second density gradually decreases from the direction of the second connecting end 407 to the second free end 405. It can be understood that those skilled in the art can gradually reduce only the first density or the second density from back to front according to actual needs.

[0033] The purpose of setting the density change is that the support 400 is formed by a plurality of lattices 500 which are connected by nodes and bars, and the support 400 with high density means that the number of nodes and bars of the lattice 500 in a unit volume is more, so that a more compact and complex network structure is formed, and the network structure can more effectively disperse and resist stress when subjected to external force, and therefore has higher support strength. The smaller the space volume of the lattice 500, the greater the density of the lattice 500, and the structure strength of the support 400 is enhanced, and the greater the space volume of the lattice 500, the smaller the density of the lattice 500, and the strength of the support 400 is reduced, but at the same time the weight is also reduced, and the support strength required by the first part 401 and the third part 403 from the rear side to the front side direction gradually decreases, so that the first density gradually decreases from the first connecting end 406 to the first free end 404, and the second density gradually decreases from the second connecting end 407 to the second free end 405, and under the premise of realizing stable support on both sides and the rear side of the heel area 300, the torsion resistance and flexibility of the midfoot area 200 are ensured, and the weight of the support 400 is reduced, the lightness of the sole is improved, and the material cost is saved.

[0034] It can be understood that the support 400 is set as an integral structure by the 3D printing technology, so as to improve the structure strength of the support 400 and reduce the manufacturing cost.

[0035] It should be noted that the manufacturing method of the composite structure sole of the utility model is as follows:

[0036] First, according to the first elastic part 10 structure required by the insole to enhance the supportability, the lattice 500 is processed by 3D printing, and the appropriate lattice 500 size and lattice 500 distribution density are selected according to actual needs; then the support 400 is printed out by using the 3D printing process; finally, when the insole is formed and manufactured, the support 400 is fixed in the mold, the support 400 and the insole are formed at the same time, the insole material penetrates into the hollow lattice 500, so that the insole and the support 400 are integrated into an integrated structure, and the support part and the insole are taken out at the same time after the mold is opened.

[0037] The sole manufactured according to the above steps improves the supportability of the side of the sole and the torsional resistance and stability of the midfoot area 200 without increasing the weight of the sole, and reduces the traditional component glue bonding process, so as to avoid sports injuries during sports.

[0038] The composite structure sole of the utility model has the following advantages:

[0039] 1. The supporting piece is arranged in the first elastic part of the midsole, a plurality of hollow lattices are formed in the supporting piece, the first elastic part is arranged in the lattices, the first elastic part and the supporting piece form an integrated structure, so that the support, the torsion resistance and the stability of the sole are better without increasing the weight of the product, and the traditional component glue bonding is reduced, and the overall strength of the structure is improved;

[0040] 2. The supporting piece is arranged in a wedge-shaped structure, and the supporting piece comprises a first surface, a second surface and a third surface arranged in sequence, so that the cross section of the supporting piece forms a triangle, and the stable support effect of the heel area and the midfoot area can be realized;

[0041] 3. The lattice structure of the supporting piece reduces the weight, but still maintains high strength, the supporting piece has excellent strength-to-weight ratio, and stable support performance can be realized with the least material, and the lattice can effectively absorb and disperse impact energy, and the shock absorption and torsion resistance effect of the sole is improved.

[0042] The utility model also provides a shoe, comprising the composite structure sole that above described, the outsole is arranged below the midsole of sole, and the vamp is arranged on the midsole.

[0043] The above-mentioned "above", "below" and "within" include the number; The "more than" and "outside" do not include the number.

[0044] The above-mentioned "above", "below" and "within" include the number; The "more than" and "outside" do not include the number.

[0045] If the utility model example has involved directionality indication (such as above, below, left, right, front, back), then this directionality indication is only used to explain the relative position relationship, movement condition etc. between each component in a certain specific attitude (such as shown in the drawing), if this specific attitude changes, then this directionality indication also changes accordingly.

Claims

1. A composite structure shoe sole, characterized in that, The device includes a midsole and a support member. The midsole includes a first elastic part, and the support member is disposed within the first elastic part. The support member has a plurality of hollow lattices formed within it. The first elastic part is filled within the lattices so that the first elastic part and the support member form an integrated structure.

2. The composite structure sole as described in claim 1, characterized in that, The midsole includes a forefoot region, a midfoot region, and a heel region that are sequentially connected, and a first elastic portion is disposed on at least one of the forefoot region, midfoot region, and heel region.

3. The composite structure sole as described in claim 2, characterized in that, The first elastic part includes a first unit, a second unit, and a third unit arranged sequentially. The first unit corresponds to the inner side of the midfoot region and the heel region, the second unit corresponds to the posterior side of the heel region, and the third unit corresponds to the outer side of the heel region. The support member includes a first part arranged sequentially in the first unit, a second part arranged in the second unit, and a third part arranged in the third unit.

4. The composite structure sole as described in claim 3, characterized in that, The first part includes a first free end and a first connecting end, and the third part includes a second free end and a second connecting end. The second connecting end and the first connecting end are connected through the second part. The first part gradually tapers from the first connecting end to the first free end; and / or the third part gradually tapers from the second connecting end to the second free end.

5. The composite structure sole as described in claim 3, characterized in that, The density of the first lattice is a first density, which gradually decreases from the first connecting end to the first free end; and / or the density of the third lattice is a second density, which gradually decreases from the second connecting end to the second free end.

6. The composite structure sole as described in any one of claims 1 to 5, characterized in that, The cross-section of the support is set as a triangle.

7. The composite structure sole as described in claim 6, characterized in that, The support member includes a first surface and a second surface. The first surface is disposed relative to the side surface of the first elastic part, and the second surface is disposed relative to the bottom surface of the first elastic part.

8. The composite structure sole as described in any one of claims 1 to 5, characterized in that, The lattice includes nodes and bars, with the number of nodes set to four or more and arranged on at least two faces, and each node connected to at least three bars.

9. The composite structure sole as described in any one of claims 1 to 5, characterized in that, The support components are designed as a single-piece molded structure.

10. A shoe, characterized in that, Including the composite structure sole as described in any one of claims 1 to 9.

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