Structure of midsole and insole of shoe

Abstract

The present application provides a kind of shoe midsole and insole structure, midsole and insole are respectively including support body and the foamed body of covering the support body, the support body has carbon fiber layer and at least one layer of metal foil, the carbon fiber layer is by Prepreg laminated multiple pieces, and each material layer and layer have prepreg substrate (Matrix) contact cover;After being cured into plate or strip-shaped wire support body by heating and pressurizing, the outside is covered with foaming material (i.e. foamed body) again, so that it is firmly combined into one and forms midsole or insole, the support body simultaneously has the advantages of two different materials of carbon fiber elasticity and metal ductility, provides the midsole and insole endows shoes with good toughness, good elasticity, anti-twist, impact resistance, excellent shock absorption capacity, good stability and comfortable feeling after wearing, and can avoid foot movement injury, thereby being able to provide the effect of foot health care and correction.

Description

Technical Field

[0001] This application relates to the structure of a shoe midsole and insole, and more particularly to a structure of a shoe midsole and insole that can give the shoe good toughness, good elasticity, torsion resistance, impact resistance, excellent shock absorption, good stability, and comfort after wearing, and can prevent foot sports injuries, thereby providing foot health and correction effects. Background Technology

[0002] As is well known, shoes consist of an outsole, a midsole above the outsole, an insole above the midsole, and an upper secured to the outer perimeter of the outsole. The outsole, primarily in contact with the ground, is made of wear-resistant, slip-resistant, and shock-absorbing materials. The midsole, designed to increase rebound and cushioning to reduce impact on the body, is typically made of foam. The insole, to distribute pressure on the sole of the foot, is usually made of foam, silicone, or latex. The upper, primarily for shape and fit, is generally made of softer materials. Besides comfort, a good shoe needs to be torsionalally inert, especially important for athletic shoes requiring speed and agility. During exercise, the foot's center of gravity changes rapidly, and the explosive force between the forefoot and heel can easily generate rotational forces, causing the shoe to twist. Insufficient torsional resistance in the midsole can lead to ankle injuries. Currently, shoe midsoles, which were initially made of plastic, carbon fiber, or other materials with appropriate hardness, combined with soft materials such as foam, silicone, and latex, do provide comfort for the feet. However, the biggest drawback is that because the entire midsole is molded from a single piece of hard material (plastic, carbon fiber) and foam or silicone / latex, the rigidity of the material makes it impossible to adjust or change the functional properties according to the shape and position of each athlete's or orthotics foot. Therefore, the feet will feel uncomfortable after wearing the shoes for a long time, and the design cannot meet the needs of all athletes or orthotics users.

[0003] Furthermore, shoe insoles are usually made of foam, silicone, or latex to distribute pressure on the soles of the feet. Although they are soft and elastic, they are prone to sinking and deforming and losing elasticity after long-term use, which can cause discomfort, fatigue, and sports injuries to the user's feet.

[0004] In view of this, the creator of this application, drawing on years of experience in composite material research, has developed this application after several rounds of research. Utility Model Content

[0005] The technical problem to be solved by this application is to provide a structure for the midsole and insole of a shoe, which combines the advantages of two different materials, carbon fiber with its excellent elasticity and metal with its excellent ductility. When assembled inside a shoe, it can give the shoe good toughness, good elasticity, torsion resistance, impact resistance, excellent shock absorption, good stability and comfort, and can prevent foot sports injuries, thereby providing foot health care and correction effects.

[0006] To achieve the above objectives, the midsole and insole of the shoe in this application are characterized by comprising a support body and a foam body covering the support body. The support body has a carbon fiber layer and at least one layer of metal sheet. The carbon fiber layer is composed of multiple layers of prepreg, and each material layer is covered by a prepreg matrix. After being cured by heating and pressurizing to form a plate-shaped support body, the outside is covered with foam material (i.e., foam body) to firmly bond them together to form a midsole or insole.

[0007] Another feature of the structure of the midsole and insole of the shoe in this application is that the midsole and insole respectively include a support body and a foam body covering the support body. The support body has a carbon fiber layer and at least one layer of metal sheet. The carbon fiber layer is made of multiple layers of prepreg, and each layer of material is covered by a prepreg matrix. After being rolled into strips, the strips are placed on a midsole / insole mold and cured by heating and pressurizing to form a strip support body of any geometric shape within the foot area. The outside is then covered with foam material (i.e., foam body) to firmly bond them together to form a midsole or insole.

[0008] The other effects and embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 An exploded perspective view of a shoe comprising an outsole, midsole, insole, and upper, showing a first embodiment of the structure of the midsole and insole of this application;

[0011] Figure 2 for Figure 1 Section 2-2;

[0012] Figure 3 for Figure 1 Section 3-3;

[0013] Figure 4 This is a perspective view of the first embodiment of the support structure for the midsole and insole of the shoe according to this application;

[0014] Figure 5 This is a perspective view of the second embodiment of the support structure for the midsole and insole of the shoe in this application;

[0015] Figure 6A for Figure 5 Section 6-6 shows the support structure for the hollow strip wire;

[0016] Figure 6B Displays a support structure filled with foam material from hollow strip-shaped wires;

[0017] Figure 6C This displays the support structure flattened into a solid strip of wire;

[0018] Figure 7 This is a cross-sectional view of the third embodiment of the support structure for the midsole and insole of the shoe in this application.

[0019] Symbol Explanation

[0020] 1, 1', 1”: Midsole

[0021] 2, 2', 2”: Insole

[0022] 6: Outer bottom

[0023] 7: Shoe upper

[0024] 11, 21, 11', 21', 11”, 21”: Support

[0025] 12, 22, 12', 22', 12", 22": foamed body

[0026] 110, 210: Notch

[0027] 111, 211, 111', 211', 111", 211": Carbon fiber layer

[0028] 112, 212, 112', 212', 112", 212": Metallic sheet

[0029] T: Hollow

[0030] 13', 23': Filled with foam

[0031] 14', 24': Flattened solid

[0032] 14”, 24”: Iron core Detailed Implementation

[0033] In the embodiments described below, the positional relationships include: up, down, left, and right. Unless otherwise specified, they are all based on the direction shown by the components in the diagram.

[0034] Please see Figure 1 As shown, the shoes all have an outsole 6, a midsole 1 disposed above the outsole 6, an insole 2 disposed above the midsole 1, and an upper 7 assembled around the outer periphery of the outsole 6. As shown in the figure, the structure of the midsole 1 and insole 2 is the first embodiment of this application, wherein the midsole 1 and insole 2 are assembled inside the shoe. The midsole 1 and insole 2 respectively include support bodies 11 and 21 and foam bodies 12 and 22 covering the support bodies 11 and 21, wherein the support bodies 11 and 21 are the prototypes of the midsole and insole. Please refer to... Figure 2 and Figure 3 Upon observation, among them Figure 2The image shows the support body 11 of the midsole 1. The support body 11 has a carbon fiber layer 211 and at least one layer of metal sheet 212. The carbon fiber layer 211 is composed of multiple layers of prepreg, with each layer having a prepreg matrix in contact with and covering it. As needed, a jig is used to puncture the overlapping carbon fiber layers 211 and at least one layer of metal sheet 212 to facilitate air release and pre-form the initial shape of the support body. After being cured by heating and pressurizing to form a plate-like support body, it is then covered with a foam material (i.e., foam) to firmly bond it together to form the midsole or insole. The foam 12, 22 is selected from one of the following: TPU / EVA / PEBA / OBCS / EPDM / SBS / POE / P4U / PE / TPE / PVC / NBR / ETPU / RUBBER. That is, the aforementioned prepreg substrate (Matrix) is made of thermosetting epoxy resin (Thermoset, TS) or thermoplastic (TP), and each of the aforementioned material layers is in contact with and covered by the prepreg substrate (Matrix). Each layer of carbon fiber prepreg is stacked into a carbon fiber layer 111 by stacking multiple sheets, and the metal sheet 112 is added during the stacking process. The metal sheet 112 is selected from one of aluminum, aluminum alloy, copper, iron, steel, titanium, titanium alloy, and magnesium-aluminum alloy, and its thickness is less than 0.4 mm, preferably less than 0.1 mm. The metal material adopts a thin sheet design, which can effectively solve the interlayer delamination caused by the large difference in the coefficient of expansion between different materials. That is, the metal sheet material has a relatively small volume change. When the object to be covered is carbon fiber, the interlayer delamination stress generated by the metal sheet material is also relatively small, which can effectively solve the interlayer delamination between the contact surfaces of different materials (carbon fiber material and metal material). Conversely, excessively thick metal sheets cannot solve the significant impact caused by interlayer delamination at the contact surface. In addition, the metal sheet material is perfectly integrated with the carbon fiber material, giving the support body 11 the advantages of both materials (the excellent elasticity of carbon fiber and the excellent ductility of metal). It can also provide comprehensive and effective absorption of impact when the foot is subjected to force. Through the lamination process, each layer of carbon fiber 111 and the metal sheet 112 can be bonded together. After being heated and pressed to form a plate-shaped support body, it is then covered with foam material (i.e., foam body) to firmly bond it together to form the midsole 1.

[0035] Figure 3The process of manufacturing the insole 2 is the same as that of the midsole 1. The support body 21 of the insole 2 is the prototype of the insole, which has a carbon fiber layer 211 and at least one layer of metal sheet 212. The carbon fiber layer 211 is made of multiple layers of prepreg, and each layer of material is covered by a prepreg matrix. As needed, the overlapping carbon fiber layer 211 and at least one layer of metal sheet 212 are punctured in a certain area with a jig to facilitate air release and pre-form the initial appearance of the support body. After being heated and pressurized to form a plate-shaped support body, it is then covered with foam material (i.e., foam body) to firmly bond it together to form the insole 2. The structure of the midsole 1 and insole 2 mentioned above breaks through the traditional limitation of single material performance. Instead, the support body 21 combines the advantages of two different materials, namely the excellent elasticity of carbon fiber and the excellent ductility of metal, giving the shoe good toughness, good elasticity, torsion resistance, impact resistance, excellent shock absorption, good stability, and unprecedented comfort after wearing. It can also prevent foot sports injuries and provide foot health care and correction effects.

[0036] Please see below. Figure 4 This is a perspective view of the first embodiment of the support body for the midsole and insole of the shoe in this application. The support body 11 (21) of the midsole 1 and insole 2 in this application forms the prototype of the midsole and the prototype of the insole. As mentioned above, the support body 11 (21) is formed into a midsole and insole prototype of any geometric shape within the foot area after being molded by the midsole / insole mold. In this embodiment, the plate-shaped support body 11 (21) (midsole and insole prototype) has a notch 110 (210) formed near the front of the foot. If the geometric shape corresponds to the contact and force-bearing position of the foot, it can provide a more comfortable wearing effect. In actual manufacturing, various geometric shapes can be designed according to the force-bearing mode of different positions of the foot or the arch of the foot under local force, such as hollowing out in appropriate positions (e.g. Figure 4 (As shown by the dotted line) to appropriately meet the functional needs of all athletes or correctors.

[0037] Please see Figure 5 , Figures 6A to 6C The figures show a perspective view and a cross-sectional view of a second embodiment of the support structure for the midsole and insole of the shoe in this application, as follows: Figure 6AAs shown, the support 11' (21') differs from the plate-shaped support 11 (21) of the first embodiment in that it is a strip-shaped wire. That is, the manufacturing process of the strip-shaped support 11' (21') in the second embodiment is different from that of the first embodiment. In the second embodiment, the strip-shaped support 11' (21') also has a carbon fiber layer 111' (211') and at least one layer of metal sheet 112' (212'). The carbon fiber layer 111' (211') is made of multiple layers of prepreg, and each layer of material is covered by a prepreg matrix. After being rolled into a strip-shaped wire, it is placed on a midsole / insole mold and cured by heating and pressure to form a hollow T-shaped structure of any geometry within the foot area. Figure 6A After the strip-shaped wire support 11'(21') is formed, it is then covered with foam material (i.e., foam 12'(22')) to firmly bond them together to form a midsole or insole. In the same process, after the covering, the carbon fiber layer 111'(211') and at least one layer of metal sheet 112'(212') are stacked in multiple layers. After being rolled into a strip-shaped wire, foam material (i.e., foam) is inserted into the hollow strip-shaped wire support, and then placed on a midsole / insole mold and cured by heating and pressure to form a solid foam 13'(23') of any geometric shape within the foot area. Figure 6B After the strip-shaped support body, it is covered with a foam material, namely foam 12'(22'), selected from one of TPU / EVA / PEBA / TPEE / OBCs / EPDM / SBS / POE / P4U / PE / TPE / PVC / NBR / ETPU / RUBBER, so that they are firmly bonded together to form a midsole or insole. Figure 6A , Figure 6B It can be clearly seen that the transverse cross-section of the covered midsole or insole 1'(2') resembles an annual ring structure. The midsole and insole structure of the shoes in this application, under the same manufacturing process, can also be achieved by stacking multiple layers of the carbon fiber layer 111'(211') and at least one layer of metal sheet 112'(212'), then winding them into strips, and finally placing them on a midsole / insole mold for heating and pressing to solidify them, flattening them into a solid 14'(24'). Figure 6C After the strip-shaped wire support body is formed, it is then covered with foam material (i.e., foam bodies 12' and 22') to firmly bond them together to form a midsole or insole. Therefore, from Figures 6A to 6CIt can be clearly seen that the strip-shaped wire support in the second embodiment can be formed into a hollow or foam-filled strip-shaped wire support of any geometric shape within the foot area; or a solid strip-shaped wire support can be flattened and then covered with foam material (i.e., foam 12', 22') to firmly bond them together to form a midsole or insole. The transverse cross-section of the covered midsole or insole 1'(2') is similar to an annual ring structure. It is worth mentioning that in this embodiment, the support 11'(21') (the prototype of the midsole and insole) is formed in a claw-like shape relative to the toes. Figure 5 The long, narrow support structure curves along the arch of the foot, corresponding to the pressure points of the foot, thus providing a more comfortable wearing experience. In actual manufacturing, various geometric shapes can be designed for the arch to suit different areas of the foot, where different pressure points or localized pressure points exist, to appropriately meet the functional needs of all athletes or those undergoing orthotics.

[0038] Please see below. Figure 7 This is a cross-sectional view of the third embodiment of the support structure for the midsole and insole of the shoe described in this application. It is similar to the perspective view and cross-sectional view of the second embodiment of the support structures 11' and 21' for the midsole 1' and insole 2' described earlier. The cross-sectional view of this embodiment extends along the same... Figure 5 In a similar cross-sectional angle, the support body 11” (21”) of the midsole 1” and insole 2” also includes multiple layers of carbon fiber layer 111” (211”) and at least one layer of metal sheet 112” (212”), which are then rolled into strip wire. After that, an iron core 14” (24”) (the iron core material can be metal or plastic) is inserted into the hollow strip wire support body. Then, it is placed on the midsole / insole mold and cured by heating and pressure to form a solid metal or plastic strip wire support body of any geometric shape within the foot area. Finally, it is covered with foam material (i.e., foam body) to firmly bond it into one piece to form the midsole or insole. The transverse cross-section after covering is similar to the structure of annual rings. The metal material is selected from one of aluminum, aluminum alloy, copper, iron, steel, titanium, titanium alloy, and magnesium-aluminum alloy; the plastic material is selected from one of PEEK / PAEK / PPS / PA6 / PA66 / PET / PC / PC+ABS / PE / PP / PVC / PS / PP / PU / POM / PBT / PES / ABS. In this embodiment, in actual manufacturing, various geometric shapes can be designed according to the different stress patterns or localized stress patterns of the arch of the foot to appropriately meet the functional needs of all athletes or corrective users.

[0039] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of this application, and are not intended to limit the implementation methods of the technology of this application in any way. Any person skilled in the art may make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in this application, but these should still be regarded as the technology or embodiments that are substantially the same as those of this application.

Claims

1. A structure for a shoe's midsole and insole, assembled inside the shoe, characterized in that, The midsole and insole each include a support body and a foam body covering the support body. The support body has a carbon fiber layer and at least one layer of metal sheet. The carbon fiber layer is made of multiple layers of prepreg fabric, and each layer of the prepreg fabric is in contact with and covered by a prepreg substrate. After the support body is formed into a plate-shaped or strip-shaped wire by heating and pressing, it is then covered with foam material to firmly bond it together to form a midsole or insole.

2. The structure of the midsole and insole of the shoe according to claim 1, characterized in that, The carbon fiber layer is thicker than the metal sheet and they overlap and cover each other completely.

3. The structure of the midsole and insole of the shoe according to claim 1, characterized in that, The metal sheet can be selected from one of aluminum, aluminum alloy, copper, iron, steel, titanium, titanium alloy, and magnesium-aluminum alloy, and its thickness is less than 0.4 mm. It comprehensively overlaps the carbon fiber layer of the midsole and insole of the shoe with the at least one metal sheet, and each material layer is covered by a prepreg substrate.

4. The structure of the midsole and insole of the shoe according to claim 3, wherein the thickness of each metal sheet is preferably less than 0.1 mm.

5. The structure of the midsole and insole of the shoe according to claim 1, characterized in that, The metal sheet can be selected from one of aluminum, aluminum alloy, copper, iron, steel, titanium, titanium alloy, and magnesium-aluminum alloy, and its thickness is less than 0.4 mm. It comprehensively overlaps the carbon fiber layer of the midsole and insole of the shoe with the at least one metal sheet, and each material layer is covered by a prepreg substrate.

6. The structure of the midsole and insole of the shoe according to claim 5, wherein the thickness of each metal sheet is preferably less than 0.1 mm.

7. The structure of the midsole and insole of the shoe according to claim 1, characterized in that, The foam material, i.e. the foam body, is selected from one of TPU / EVA / PEBA / TPEE / OBCs / EPDM / SBS / POE / P4U / PE / TPE / PVC / NBR / ETPU / RUBBER.

8. The structure of the midsole and insole of the shoe according to claim 1, 3, or 5, characterized in that, The support is formed by hot pressing with a mold, creating a midsole and insole prototype of any geometric shape within the foot area.

9. The structure of the midsole and insole of the shoe according to claim 8, characterized in that, The midsole and insole, regardless of their geometric shape, are curved relative to the arch of the foot.

10. The structure of the midsole and insole of the shoe according to claim 1, characterized in that, The prepreg substrate is made of thermosetting epoxy resin or thermoplastic plastic.

11. A structure for the midsole and insole of a shoe, assembled inside the shoe, characterized in that, The midsole and insole each include a support body and a foam body covering the support body. The support body has a carbon fiber layer and at least one layer of metal sheet. The carbon fiber layer is made of multiple layers of prepreg fabric, with each layer of prepreg fabric in contact with a prepreg substrate. The carbon fiber layer and metal sheet are then wound into strips and placed on a midsole / insole mold. After being heated and pressurized to form a strip support body of any geometric shape within the foot area, the outside is covered with foam material to firmly bond them together to form a midsole or insole. After being covered, the transverse cross-section of the midsole or insole resembles an annual ring structure.

12. The structure of the midsole and insole of the shoe according to claim 11, characterized in that, The carbon fiber layer is thicker than the metal sheet and they overlap and cover each other completely.

13. The structure of the midsole and insole of the shoe according to claim 11, characterized in that, The metal sheet can be selected from one of aluminum, aluminum alloy, copper, iron, steel, titanium, titanium alloy, and magnesium-aluminum alloy, and its thickness is less than 0.4 mm. It comprehensively overlaps the carbon fiber layer of the midsole and insole of the shoe with the at least one layer of metal sheet, and each material layer is covered with a prepreg substrate. The transverse cross section after covering is similar to an annual ring structure.

14. The structure of the midsole and insole of the shoe according to claim 13, characterized in that, The thickness of each metal sheet should ideally be less than 0.1 mm.

15. The structure of the midsole and insole of the shoe according to claim 11, characterized in that, The metal sheet can be selected from one of aluminum, aluminum alloy, copper, iron, steel, titanium, titanium alloy, and magnesium-aluminum alloy, and its thickness is less than 0.4mm. The metal sheet is used to completely overlap the carbon fiber layer of the midsole and insole of the shoe, and each material layer is covered with a prepreg substrate. The transverse cross section after covering is similar to the structure of annual rings.

16. The structure of the midsole and insole of the shoe according to claim 15, wherein the thickness of each metal sheet is preferably less than 0.1 mm.

17. The structure of the midsole and insole of the shoe according to claim 11, characterized in that, The foam material, i.e. the foam body, is selected from one of TPU / EVA / PEBA / TPEE / OBCs / EPDM / SBS / POE / P4U / PE / TPE / PVC / NBR / ETPU / RUBBER.

18. The structure of the midsole and insole of the shoe according to claim 11, 13, 15, or 17, characterized in that, The carbon fiber layer and metal sheet mesh are stacked in multiple layers, wound into strips, and then placed on a midsole / insole mold and cured by heating and pressurizing to form a hollow strip support body of any geometric shape within the foot area. The outside is then covered with foam material, i.e. foam body, to firmly bond them together to form a midsole or insole. The transverse cross-section after covering is similar to an annual ring structure.

19. The structure of the midsole and insole of the shoe according to claim 11, 13, 15, or 17, characterized in that, The carbon fiber layer and metal sheet are stacked in multiple layers, wound into strips, and then placed on a midsole / insole mold. The strips are then heated and pressed to solidify them, forming a flattened solid strip support body of any geometric shape within the foot area. Finally, a foam material is wrapped around the outside to firmly bond them together to form a midsole or insole. The transverse cross-section after wrapping resembles an annual ring structure.

20. The structure of the midsole and insole of the shoe according to claim 18, characterized in that, After multiple layers of carbon fiber and metal sheets are stacked and wound into strips, foam material is inserted into the hollow strip support body. Then, it is placed on a midsole / insole mold and cured by heating and pressurizing to form a solid foam strip support body of any geometric shape within the foot area. Finally, the outside is covered with foam material to firmly bond it into a whole to form a midsole or insole. The cross-section of the covered midsole and insole is similar to the structure of annual rings.

21. The structure of the midsole and insole of the shoe according to claim 20, characterized in that, The foam material, i.e. the foam body, is selected from one of TPU / EVA / PEBA / TPEE / OBCs / EPDM / SBS / POE / P4U / PE / TPE / PVC / NBR / ETPU / RUBBER.

22. The structure of the midsole and insole of the shoe according to claim 18, characterized in that, After multiple layers of carbon fiber and metal sheets are stacked and wound into strips, an iron core is inserted into the hollow strip support. The iron core can be made of metal or plastic. After being placed on a midsole / insole mold and cured by heating and pressurizing, a solid metal or plastic strip support of any geometric shape within the foot area is formed. Then, a foam material is wrapped around the outside to firmly bond it together to form a midsole or insole. The cross-section of the wrapped midsole and insole is similar to the structure of annual rings.

23. The structure of the midsole and insole of the shoe according to claim 22, characterized in that, The metal material is selected from one of the following: aluminum, aluminum alloy, copper, iron, steel, titanium, titanium alloy, and magnesium-aluminum alloy.

24. The structure of the midsole and insole of the shoe according to claim 22, characterized in that, The plastic material is selected from one of the following: PEEK / PAEK / PPS / PA6 / PA66 / PET / PC / PC+ABS / PE / PP / PVC / PS / PP / PU / POM / PBT / PES / ABS.

25. The structure of the midsole and insole of the shoe according to claim 11, characterized in that, The support of the strip wire of any geometric shape is curved along the contour of the arch of the foot relative to the arch.

26. The structure of the midsole and insole of the shoe according to claim 11, characterized in that, The support of the strip wire of any geometric shape forms a claw-like strip structure relative to the toes.

27. The structure of the midsole and insole of the shoe according to claim 11, characterized in that, The prepreg substrate is made of thermosetting epoxy resin or thermoplastic plastic.

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