A sole and shoe and a method of manufacturing a shoe

Abstract

The application discloses a kind of shoe sole and shoe and its shoe preparation method.Therein, a kind of shoe sole, comprising: big bottom;And post insole, it is set on big bottom, it includes connecting integrated insole and foot pad, foot pad contacts the sole of human body, insole is close to big bottom;The quantity of post insole is several and can be replaced each other, several post insoles are the combination of insole and foot pad with different thickness formed by different hardness insole material.The application provides a kind of shoe sole and shoe and its shoe preparation method, the shoe is designed with replaceable post insole, so that shoe can be flexibly adjusted according to different intensity of movement requirements.

Description

Technical Field

[0001] This invention relates to the field of footwear, and more specifically to a sole, a shoe, and a method for preparing the shoe. Background Technology

[0002] In today's society, with people placing increasing emphasis on healthy living, physical activity has become an indispensable part of daily life. However, after high-intensity exercise, athletes often experience fatigue in their feet and soles, which seriously affects their athletic experience and recovery. Therefore, a post-competition recovery shoe that can quickly relieve fatigue and restore physical strength has become an urgent market demand. Traditional insoles, due to their thickness limitations, often fail to provide sufficient support and cushioning, which greatly limits their effectiveness in post-competition recovery. Although some post-competition recovery shoes already exist on the market, most products still adopt a single-hardness design, such as using a midsole with a hardness of around 65 degrees paired with a 3mm insole. While this design can provide some support for the feet, it often fails to meet the diverse needs of different sports scenarios and living environments due to a lack of sufficient adaptability and flexibility. The key to shoe comfort lies in the sole, and the hardness, rebound, weight, and other physical properties of the sole directly affect the user's wearing experience. Therefore, current technology has been dedicated to developing outsole materials with superior physical properties. However, the traditional shoe manufacturing process has become a bottleneck restricting the realization of these properties. During the manufacturing process, the upper needs to be sewn together to form a complete upper, which is then fitted with the last, and finally the outsole is attached. This manufacturing method results in multiple layers of barriers between the user and the optimal midsole components, including insole padding, midsole fabric, and adhesive. These additional layers not only increase the thickness of the shoe but may also reduce wearing comfort. More importantly, they hinder the direct interaction of the sole's properties with the foot, affecting the overall performance of the shoe. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned defects or problems in the prior art and to provide a sole, a shoe, and a method for manufacturing the shoe. The shoe adopts a replaceable rear insole design, which allows the shoe to be flexibly adjusted according to the needs of different intensities of exercise.

[0004] To achieve the above objectives, the various embodiments of the present invention employ the following technical solutions, but are not limited to the following solutions:

[0005] The first technical solution relates to a shoe sole, comprising: an outsole; and a rear insole disposed on the outsole, comprising an integrally connected midsole and a foot pad, the foot pad contacting the sole of the human foot, the midsole being close to the outsole; the number of rear insoles is several and they can be interchanged, the several rear insoles being a combination of a midsole and a foot pad of different thicknesses formed by midsole materials of different hardness.

[0006] The second technical solution is based on the first technical solution, wherein the thickness of the rear insole corresponding to the forefoot part is 8mm and the thickness corresponding to the heel part is 16mm, and the rear insole is provided with a support bulge corresponding to the human arch.

[0007] The third technical solution is based on the second technical solution, wherein the pad foot includes foam and fabric that are connected as one piece.

[0008] The fourth technical solution is based on the third technical solution, wherein the midsole is made of ETPU material with a Shore hardness of 50±2, the thickness of the midsole corresponding to the forefoot part is 6mm, the thickness of the midsole corresponding to the heel part is 14mm, and the thickness of the foam is 2mm.

[0009] The fifth technical solution is based on the third technical solution, wherein the midsole is a physical foam material with a Shore hardness of 58±2, the thickness of the midsole corresponding to the forefoot part is 4mm, the thickness of the midsole corresponding to the heel part is 12mm, and the thickness of the foam is 4mm.

[0010] The sixth technical solution is based on the third technical solution, wherein the midsole is made of EVA material with a Shore hardness of 65±2, the thickness of the midsole corresponding to the forefoot part is 5mm, the thickness of the midsole corresponding to the heel part is 13mm, and the thickness of the foam is 3mm.

[0011] The seventh technical solution is based on the first technical solution, wherein the rear insole is provided with a massage area corresponding to the forefoot and toe area, and the massage area is provided with a number of raised points suitable for the spaces between the toes of the human foot.

[0012] The eighth technical solution is based on the first technical solution, wherein the rear insole has an anti-slip area corresponding to the forefoot portion, and the anti-slip area is an anti-slip silicone strip.

[0013] The ninth technical solution is based on any one of the first to eighth technical solutions, wherein a shoe includes an upper and the aforementioned sole, the upper being connected to the outsole, and a plurality of the rear insoles being replaceable according to different sports activities.

[0014] The tenth technical solution is based on the ninth technical solution, wherein a method for manufacturing a shoe includes the following steps: S1, preparing the upper structure: sewing the upper to the midsole to form a closed upper structure; S2, fitting the upper onto the last: fitting the sewn upper structure onto the last, ensuring a tight fit between the upper and the last; S3, preparing the insole: selecting materials of different hardness (ETPU, EVA, or physical foaming materials) and bonding them with foam and fabric to prepare the insole; S4, bonding the outsole to the upper structure, ensuring a tight connection and accurate positioning, followed by pressure and curing; S5, inserting the insole: removing the last and inserting the prepared insole into the shoe to complete the overall shoe manufacturing.

[0015] As can be seen from the above description of the various embodiments of the present invention, compared with the prior art, the various embodiments of the present invention have the following advantages:

[0016] Beneficial effects:

[0017] In the first technical solution and related embodiments, by integrating the midsole and insole to form a rear insole, the obstruction of the intermediate midsole fabric and adhesive is removed. This allows the midsole material to more directly transfer its excellent physical properties to the wearer's foot, enhancing the direct contact and transmission effect between the sole and the foot, and improving wearing comfort and functionality. The insole, in direct contact with the sole of the foot, provides a soft and comfortable feel, helping to reduce foot fatigue. The midsole, located close to the outsole, provides sufficient support and stability, ensuring the sturdiness and durability of the sole structure. Furthermore, the midsole is made of materials with different hardnesses, forming multiple midsoles and insoles with different hardness characteristics and thicknesses. This design meets the personalized needs of different users, allowing them to select the appropriate hardness according to different sports scenarios to achieve optimal wearing effect and functionality.

[0018] In the second technical solution and related embodiments, the ergonomic design is considered through the differentiated thickness design of the forefoot and heel of the rear insole, as well as the support bulge in the arch area, thereby improving wearing comfort. Specifically, the differentiated thickness design of the forefoot and heel allows the sole to have better cushioning performance at key stress points, effectively reducing impact damage to the feet and providing the wearer with a safer and more comfortable wearing experience. At the same time, the support bulge in the arch area can conform to the shape of the wearer's arch, providing sufficient support and stability for the arch, helping to reduce foot fatigue during long-term walking or exercise, and allowing the wearer to recover physical strength and power more quickly.

[0019] In the third technical solution and related embodiments, the footpad includes foam and fabric, providing excellent comfort and breathability, effectively preventing secondary damage to the soles of the feet caused by an overly hard midsole. Foam, as an excellent cushioning material, provides outstanding shock absorption for the wearer's feet. During walking or exercise, foam effectively absorbs and disperses ground reaction forces, reducing foot fatigue and impact damage, thus protecting foot health. The fabric, as the outer layer material of the footpad, provides a soft and comfortable touch. It conforms to human skin, is less likely to cause allergies or discomfort, and provides an excellent wearing experience. Simultaneously, the fabric also has certain moisture-wicking properties, helping to keep the feet dry and comfortable.

[0020] In the fourth technical solution and related embodiments, one type of rear insole is designed primarily for relaxing foot muscles after daily wear and light exercise. The midsole is made of ETPU material, specifically foamed thermoplastic polyurethane elastomer, renowned for its excellent elasticity and abrasion resistance. By controlling the Shore hardness of the ETPU within the range of 50±2, the sole achieves moderate hardness and excellent resilience, providing sufficient support for the foot while effectively absorbing the impact of walking or light exercise. In terms of structural design, the midsole thickness corresponding to the forefoot is 6mm, providing necessary support and cushioning while ensuring forefoot flexibility, allowing the wearer to move easily and freely during walking or exercise. At the heel, the midsole thickness increases to 14mm, providing stronger and more stable support, effectively reducing foot fatigue from prolonged standing or walking. Furthermore, the foam thickness in the insole is 2mm, allowing the foam to provide sufficient cushioning without increasing the overall thickness of the sole, thus ensuring comfort and lightweight wear.

[0021] In the fifth technical solution and related embodiments, one type of rear insole is primarily designed for the recovery of foot and leg muscle strength after general exercise. The midsole uses a physical foam material, giving it high elasticity and good cushioning performance. Its Shore hardness is controlled within the range of 58±2, ensuring sufficient support while avoiding discomfort caused by excessive firmness. The 4mm thickness in the forefoot and the 12mm thickness in the heel respectively meet the needs of forefoot flexibility and heel stability, providing the wearer with just the right amount of support and cushioning. Furthermore, the 4mm thick foam layer in the insole further enhances the cushioning performance of the sole, effectively absorbing and dispersing ground reaction forces, protecting the feet from impact injuries.

[0022] In the sixth technical solution and related embodiments, one type of rear insole provides good body support for wearers participating in sports events, effectively reducing physical fatigue and helping them recover quickly. The midsole uses EVA material, which is lightweight, elastic, and has excellent cushioning properties. The EVA midsole material has a hardness of 65±2, providing sufficient support and stability while maintaining a certain degree of elasticity and cushioning. Structurally, the midsole is 5mm thick at the forefoot and 13mm thick at the heel, ensuring forefoot flexibility and heel stability, providing a more form-fitting support for the wearer. The foam is 3mm thick, providing sufficient cushioning while avoiding an overly heavy sole.

[0023] In the seventh technical solution and related embodiments, one processing method is used in the forefoot area. The rear insole has several massage areas with raised dots corresponding to the spaces between the toes of the human foot. These raised dots are designed to closely fit the shape of the spaces between the toes, providing not only extra support and protection for the sole but also a massage effect, helping to quickly relieve user fatigue. At the same time, the presence of the raised dots also enhances the support and stability of the sole, allowing the wearer to experience a more stable and comfortable wearing experience during walking or exercise.

[0024] In the eighth technical solution and related embodiments, one processing method is used in the forefoot area. The rear insole has an anti-slip area with an anti-slip silicone strip corresponding to the forefoot portion. This anti-slip area is particularly suitable for shoes without a heel. The anti-slip silicone strip effectively enhances the friction of the forefoot area, preventing instability caused by slipping during putting on and taking off, and providing the wearer with a safer and more stable wearing experience.

[0025] In the ninth technical solution and related embodiments, the shoe adopts a replaceable rear insole design, allowing the shoe to be flexibly adjusted according to different intensities of exercise. By replacing the rear insole with different hardness and thickness, the shoe can adapt to different intensities of exercise. Whether for everyday leisure, light exercise, or after high-intensity exercise, the most suitable midsole configuration can be found, providing the wearer with just the right support and cushioning, enhancing foot support, reducing sports injuries, and accelerating exercise recovery.

[0026] In the tenth technical solution and related embodiments, this preparation method integrates the midsole and insole together to form a rear insole, eliminating the steps of the intermediate midsole fabric and adhesive, thus simplifying the traditional manufacturing process. The material selection and structural design of the rear insole are optimized to provide excellent support and cushioning performance, bringing a more comfortable wearing experience to the wearer. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the shoe sole as an example.

[0029] Figure 2 This is a schematic diagram of the shoe sole structure for an example.

[0030] Figure 3 This is a schematic diagram of the rear insole structure in an embodiment;

[0031] Figure 4 This is a schematic diagram of the anti-slip zone of the rear insole in Example 1;

[0032] Figure 5 This is a schematic diagram of the massage area of ​​the rear insole in Example 2;

[0033] Figure 6 This is a schematic cross-sectional view of the shoe structure as an example.

[0034] Explanation of key figure labels:

[0035] Outsole 1; Sole 2; Outsole 3; Lapel midsole 4; Rear insole 5; Midsole 6; Foot pad 7; Foam 8; Fabric 9; Anti-slip zone 10; Upper 11; Massage zone 12; Support bulge 13. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0038] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0039] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0040] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0041] See Figures 1 to 6 , Figure 1 and Figure 2 A schematic diagram of the shoe sole is shown; as follows: Figure 1 and Figure 2 As shown, a shoe sole includes an outsole 1 and a rear insole 5.

[0042] The base number 1, as shown Figure 2 As shown, it includes an outsole 3 and a bottom plate 2. The bottom plate 2 is the part of the front of the outsole that contacts the ground and the part on the waist of the outsole, which plays a role in anti-slip and wear-resistant.

[0043] Rear insole 5, such as Figure 3 As shown, it is set on the outsole 1 and includes an integrally connected midsole 6 and foot pad 7. The foot pad 7 contacts the sole of the human foot, and the midsole 6 is close to the outsole 1.

[0044] like Figure 1 As shown, the rear insole 5 has a support bulge 13 corresponding to the arch of the foot. The support bulge 13 in the arch area can conform to the shape of the wearer's arch, providing sufficient support and stability for the arch, which helps to reduce foot fatigue during long walks or sports, and allows the wearer to recover physical strength and power more quickly.

[0045] Different process designs can be applied to the forefoot area of ​​the rear insole 5 to enhance its functionality. The following are examples of two processing techniques for the forefoot area of ​​the rear insole 5.

[0046] Example 1

[0047] like Figure 4 As shown, the rear insole 5 has an anti-slip area 10 corresponding to the forefoot area. The anti-slip area 10 is an anti-slip silicone strip, which protrudes 1.5 mm from the plane of the rear insole 5. The anti-slip silicone strip can be manufactured through a post-processing printing. The anti-slip area 10 is one of the processing techniques used in the forefoot area. The anti-slip area 10 is especially suitable for shoes without a heel. The anti-slip silicone strip effectively enhances the friction of the forefoot area, preventing instability caused by slipping during putting on and taking off, and providing the wearer with a safer and more stable wearing experience.

[0048] Example 2

[0049] like Figure 5 As shown, the rear insole 5 has massage areas 12 corresponding to the forefoot and toe areas. These massage areas 12 have several raised dots adapted to the spaces between the toes of the foot. The massage areas 12 represent one type of processing technique used in the forefoot area. These raised dots are designed to closely fit the shape of the spaces between the toes, providing not only extra support and protection for the foot but also a massage effect, helping to quickly relieve user fatigue. Simultaneously, the presence of these raised dots enhances the support and stability of the sole, allowing the wearer to experience a more stable and comfortable wearing experience during walking or exercise. The raised dots are directly formed in the mold.

[0050] The footpad 7 comprises an integrated foam 8 and fabric 9, offering excellent comfort and breathability, effectively preventing secondary injuries to the soles of the feet caused by an overly hard midsole 6. The foam 8, as a superior cushioning material, provides excellent shock absorption for the wearer's feet. During walking or exercise, the foam 8 effectively absorbs and disperses ground reaction forces, reducing foot fatigue and impact damage, thus protecting foot health. The fabric 9, as the outer layer of the footpad 7, provides a soft and comfortable feel. It conforms to human skin, is less likely to cause allergies or discomfort, and provides an excellent wearing experience. Simultaneously, the fabric 9 also has moisture-wicking properties, helping to keep feet dry and comfortable.

[0051] The number of rear insoles 5 is several and they can be interchanged. These rear insoles 5 are combinations of midsoles 6 of different thicknesses formed by midsole materials of different hardness and insoles 7. Specifically, as... Figure 1As shown, the thickness of the rear insole 5 is 8mm for the forefoot and 16mm for the heel. The differentiated thickness design of the forefoot and heel of the rear insole 5, along with the arch support bulge 13, considers ergonomic needs, thereby improving wearing comfort. Specifically, the difference in thickness between the forefoot and heel provides better cushioning at key stress points, effectively reducing impact damage to the feet and providing a safer and more comfortable wearing experience. In this embodiment, the rear insole 5 comes in three different hardness styles. These rear insoles 5 are designed to meet the personalized comfort needs of people after different intensities of exercise. People can freely choose the most suitable insole style based on their exercise intensity, fatigue level, and energy loss. In this way, different degrees of fatigue and energy loss after exercise can be effectively regulated and alleviated, thereby improving the overall exercise experience and recovery effect.

[0052] In this embodiment, by integrating the midsole 6 and the insole 7 together to form the rear insole 5, the obstruction of the intermediate midsole 6 fabric and adhesive is removed. This allows the midsole 6 material to more directly transfer its excellent physical properties to the wearer's foot, enhancing the direct contact and transmission effect between the sole and the foot, and improving wearing comfort and functionality. The insole 7 directly contacts the sole of the foot, providing a soft and comfortable touch and helping to reduce foot fatigue. The midsole 6 is close to the outsole 1, providing sufficient support and stability, ensuring the sturdiness and durability of the sole structure. In addition, the midsole 6 is made of midsole 6 materials with different hardness, forming multiple midsoles 6 and insole 7s with different hardness characteristics and thicknesses. This design meets the personalized needs of different users, allowing them to select the appropriate hardness according to different sports scenarios to achieve the best wearing effect and functionality.

[0053] The following are three different styles of rear insoles with varying hardness.

[0054] Rear insole

[0055] The midsole 6 is made of ETPU material with a Shore hardness of 50±2. The thickness of the midsole 6 corresponding to the forefoot is 6mm, and the thickness of the midsole 6 corresponding to the heel is 14mm. The thickness of the foam 8 is 2mm.

[0056] This embodiment features a rear insole 5, primarily designed to address the need for foot muscle relaxation during daily wear and light exercise. As can be seen from the combined thickness of the midsole 6 and foam 8, the rear insole 5 has a thickness of 8mm for the forefoot and 16mm for the heel. The midsole 6 is made of ETPU material, specifically foamed thermoplastic polyurethane elastomer, renowned for its excellent elasticity and abrasion resistance. By controlling the Shore hardness of ETPU within the range of 50±2, the sole achieves moderate hardness and excellent resilience, providing sufficient support for the foot while effectively absorbing the impact of walking or light exercise. In terms of structural design, the midsole 6 has a thickness of 6mm for the forefoot, providing necessary support and cushioning while ensuring forefoot flexibility, allowing the wearer to move freely and easily during walking or exercise. At the heel, the thickness of the midsole 6 increases to 14mm, providing stronger and more stable support, effectively reducing foot fatigue from prolonged standing or walking. In addition, the foam 8 in the insole is 2mm thick, which allows the foam 8 to provide sufficient cushioning while avoiding increasing the overall thickness of the sole, thus ensuring comfort and lightness when wearing.

[0057] Rear insole 2

[0058] The midsole 6 is made of physical foam material with a Shore hardness of 58±2. The thickness of the midsole 6 corresponding to the forefoot is 4mm, and the thickness of the midsole 6 corresponding to the heel is 12mm. The thickness of the foam 8 is 4mm.

[0059] This embodiment features a rear insole 5, primarily designed for foot and leg muscle recovery after general exercise. As shown by the combined thickness of the midsole 6 and foam 8, the rear insole 5 has a thickness of 8mm for the forefoot and 16mm for the heel. The midsole 6 utilizes a physical foam material, providing high elasticity and excellent cushioning. Its Shore hardness is controlled within the range of 58±2, ensuring sufficient support while avoiding discomfort from excessive firmness. The 4mm thickness in the forefoot and the 12mm thickness in the heel respectively meet the needs of forefoot flexibility and heel stability, providing the wearer with just the right amount of support and cushioning. Furthermore, the 4mm thick foam layer 8 in the insole further enhances the cushioning performance of the sole, effectively absorbing and dispersing ground reaction forces, protecting the feet from impact injuries.

[0060] Rear insole three

[0061] The midsole 6 is made of EVA material with a Shore hardness of 65±2. The thickness of the midsole 6 corresponding to the forefoot is 5mm, the thickness of the midsole 6 corresponding to the heel is 13mm, and the thickness of the foam 8 is 3mm.

[0062] This embodiment features a rear insole 5, providing excellent body support for wearers participating in sports events, effectively reducing fatigue and helping them recover quickly. As can be seen from the combined thickness of the midsole 6 and foam 8, the rear insole 5 has a thickness of 8mm for the forefoot and 16mm for the heel. The midsole 6 is made of EVA material, which is lightweight, elastic, and has excellent cushioning. The EVA material in the midsole 6 has a hardness of 65±2, providing sufficient support and stability while maintaining a certain degree of elasticity and cushioning. Structurally, the midsole 6 has a thickness of 5mm for the forefoot and 13mm for the heel, ensuring forefoot flexibility and heel stability, providing a more form-fitting support for the wearer. The foam 8 has a thickness of 3mm, providing sufficient cushioning without making the sole too heavy.

[0063] A type of shoe, such as Figure 6 As shown, it includes an upper 11 and a sole as described above. The upper 11 is connected to the outsole 1. Specifically, the upper 11 is stitched to the midsole 4 to form a closed upper 11 structure, and then the outsole 1 is bonded to the upper 11 structure. Several rear insoles 5 can be replaced according to different intensities of exercise. In this embodiment, the shoe adopts a replaceable rear insole 5 design, allowing the shoe to be flexibly adjusted according to different intensities of exercise. By replacing the rear insoles 5 with different hardness and thickness, the shoe can adapt to different intensities of exercise. Whether for daily leisure, light exercise, or high-intensity exercise, the most suitable midsole 6 configuration can be found, thereby providing the wearer with just the right support and cushioning effect, enhancing foot wrapping, reducing sports injuries, and accelerating exercise recovery.

[0064] A method for manufacturing a shoe includes the following steps:

[0065] S1. Preparation of the upper 11 structure: The upper 11 is sewn to the midsole 4 to form a closed upper 11 structure.

[0066] S2, Upper 11 Lasting: Place the sewn upper 11 structure onto the last, ensuring that the upper 11 fits tightly to the last.

[0067] S3. Preparation of rear insole 5: Select materials of different hardness (ETPU material, EVA material or physical foaming material) and bond them with foam 8 and fabric 9 to prepare rear insole 5.

[0068] S4. Outsole 1 bonding: Bond the outsole 1 to the upper 11 structure to ensure that the two are tightly connected and accurately positioned, and then apply pressure and cure.

[0069] S5. Insert the rear insole 5: Remove the shoe last and insert the prepared rear insole 5 into the shoe to complete the overall shoe production.

[0070] In this embodiment, the manufacturing method integrates the midsole 6 and the insole together to form the rear insole 5, eliminating the steps of fabric and adhesive in the middle midsole 6, thus simplifying the traditional manufacturing process. The material selection and structural design of the rear insole 5 are optimized to provide excellent support and cushioning performance, bringing a more comfortable wearing experience to the wearer.

[0071] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A shoe sole, characterized in that, include: Outer base (1); and The rear insole (5) is disposed on the outsole (1) and includes an integrally connected midsole (6) and foot pad (7), the foot pad (7) contacting the sole of the human foot, and the midsole (6) being close to the outsole (1); The number of the rear insoles (5) is several and they can be interchanged. The several rear insoles (5) are a combination of a midsole (6) with different thicknesses formed by midsole (6) materials of different hardness and a foot pad (7). The thickness of the rear insole (5) is 8mm for the forefoot and 16mm for the heel. The rear insole (5) has a support bulge (13) corresponding to the arch of the foot. The rear insole (5) has a massage area (12) corresponding to the forefoot and toe area, and the massage area (12) has several protrusions suitable for the spaces between the toes of the human foot. The foot (7) includes an integrally connected foam (8) and fabric (9).

2. The sole as described in claim 1, characterized in that, The midsole (6) is made of ETPU material with a Shore hardness of 50±2. The thickness of the midsole (6) corresponding to the forefoot part is 6mm, the thickness of the midsole (6) corresponding to the heel part is 14mm, and the thickness of the foam (8) is 2mm.

3. The sole as described in claim 1, characterized in that, The midsole (6) is a physical foam material with a Shore hardness of 58±2. The thickness of the midsole (6) corresponding to the forefoot part is 4mm, the thickness of the midsole (6) corresponding to the heel part is 12mm, and the thickness of the foam (8) is 4mm.

4. A shoe sole as described in claim 1, characterized in that, The midsole (6) is made of EVA material with a Shore hardness of 65±2. The thickness of the midsole (6) corresponding to the forefoot part is 5mm, the thickness of the midsole (6) corresponding to the heel part is 13mm, and the thickness of the foam (8) is 3mm.

5. A shoe sole as described in claim 1, characterized in that, The rear insole (5) has an anti-slip area (10) corresponding to the forefoot part, and the anti-slip area (10) is an anti-slip silicone strip.

6. A type of shoe, characterized in that, Includes an upper (11) and a sole as described in any one of claims 1 to 5, wherein the upper (11) is connected to the outsole (1), and the plurality of the rear insoles (5) can be replaced according to different sports.

7. A method for manufacturing a shoe, characterized in that, Its use in manufacturing a shoe as described in claim 6 includes the following steps: S1. Preparation of the upper (11) structure: The upper (11) is sewn to the midsole (4) to form a closed upper (11) structure; S2, Upper (11) fitting: Fit the sewn upper (11) structure onto the last, ensuring that the upper (11) fits tightly to the last; S3. Preparation of rear insole (5): Select materials of different hardness, such as ETPU material, EVA material or physical foaming material, and bond them with foam (8) and fabric (9) to prepare rear insole (5); S4. Outsole (1) bonding: Bond the outsole (1) to the upper (11) structure to ensure that the two are tightly connected and in the correct position, and then apply pressure and cure. S5. Insert the back insole (5): Remove the shoe last and insert the prepared back insole (5) into the shoe to complete the overall production of the shoe.

Images