Midsole with adjustable bending rigidity and shoe

Abstract

The utility model discloses an insole with adjustable bending rigidity and a shoe, and the insole with adjustable bending rigidity comprises an insole body which is provided with a half sole part, a middle waist part and a heel part; the insole body is provided with a first groove, and the first groove penetrates through the half sole part, the middle waist part and the heel part in the extending direction of the foot sole; the rigid piece is arranged in the first groove in a sliding manner; the adjusting device comprises an operating part and a driving part, the operating part is connected with the driving part, the driving part is arranged at the position, close to the heel part, of the middle waist part, close to the sole direction, of the insole body, and the operating part is arranged at the heel part on the outer side of the insole body; the two ends of the rigid piece are connected with the driving piece through wires. The operating piece is manually controlled, and the driving piece can drive the rigid piece to horizontally slide in the toe direction or the heel direction in the sole extending direction through the wire. The utility model provides an insole with adjustable bending rigidity and a shoe. According to the insole, the bending rigidity of the insole can be adjusted through an adjusting device.

Description

Technical Field

[0001] The utility model relates to the technical field of shoes, in particular to a midsole with adjustable bending stiffness and a shoe. Background Art

[0002] The bending stiffness of the midsole is a core element in the design of sports shoes. It determines the degree of bending and the ability to resist bending of the midsole part of the shoe during the wearer's movement, especially when walking, running or jumping. The bending stiffness of the midsole is crucial to the comfort and functionality of the shoe. At present, the bending stiffness of the midsole of sports shoes on the market is usually fixed. This is mainly because the selection of midsole materials and structural design are determined when the shoes are produced. In order to provide the necessary support and stability, rigid components such as carbon fiber, TPU plates, and nylon plates are often embedded in the midsole. These materials have different hardness and elastic modulus, which can adjust the bending stiffness of the midsole to a certain extent. However, this fixed bending stiffness brings some problems. First, different consumers have different wearing needs in different sports scenarios. They expect shoes to provide sufficient support and flexibility in intense sports scenarios, and to maintain comfort in daily life and low-intensity sports. In addition, the fixed bending stiffness also limits the customization of shoes. In the modern consumer market, personalized needs are becoming increasingly prominent, and consumers hope to be able to choose the various performance parameters of shoes according to their preferences and needs. However, due to the fixed bending stiffness of the midsole, current sports shoe designs often cannot meet this requirement. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems existing in the background technology and to provide a midsole and a shoe with adjustable bending stiffness, wherein the bending stiffness of the midsole can be adjusted through an adjusting device.

[0004] To achieve the above objectives, each embodiment of the present invention adopts the following technical solutions but is not limited to the following solutions:

[0005] The first technical scheme relates to an adjustable bending stiffness midsole, comprising: a midsole body, which is provided with a forefoot portion, a mid-waist portion and a heel portion, the forefoot portion corresponds to the forefoot portion, the heel portion corresponds to the heel portion, and the mid-waist portion is located between the forefoot portion and the heel portion; the midsole body is provided with a first groove in a direction close to the ground, the first groove passes through the forefoot portion, the mid-waist portion and the heel portion along the extension direction of the sole; a rigid member, which is suitable for being slidably installed in the first groove along the extension direction of the sole; and an adjustment device, which comprises an operating member and a driving member, the operating member is connected to the driving member, and the driving member is installed at a position of the mid-waist portion of the midsole body close to the sole and close to the heel portion; both ends of the rigid member are connected to the driving member through a wire; by manually operating the operating member, the driving member can drive the rigid member to slide horizontally toward the toe direction or toward the heel direction along the extension direction of the sole through the wire.

[0006] The second technical solution is based on the first technical solution, wherein the adjustment device also includes an installation box, which is used to accommodate the driving member; the driving member includes a gear wire take-up and a connecting rod, the connecting rod is meshed with the gear wire take-up, and the operating member is arranged at the heel of the outer side of the midsole body, and the operating member is connected to the connecting rod; the operating member is manually rotated, and the operating member drives the gear wire take-up to rotate through the connecting rod, and the gear wire take-up pulls the wire to make the rigid member slide horizontally along the extension direction of the sole of the foot toward the toe direction or the heel direction.

[0007] The third technical solution is based on the second technical solution, wherein the midsole body is further provided with a second groove and a third groove in the direction close to the ground, the second groove extends from the toe position of the forefoot part along the toe edge, the third groove extends from the heel position of the heel part along the heel edge, the first groove is respectively connected with the second groove and the third groove, the wire connects the two ends of the rigid part and is arranged in the first groove, the second groove and the third groove.

[0008] The fourth technical solution is based on the third technical solution, wherein the wire includes a first wire and a second wire, the first wire is connected to one end of the rigid part close to the forefoot, and is connected to the gear wire reel through the first groove and the second groove; the second wire is connected to the other end of the rigid part close to the mid-waist, and is connected to the gear wire reel through the first groove and the third groove, and the first wire, the rigid part and the second wire form a closed loop through the gear wire reel; the operating member is rotated clockwise, and the operating member drives the gear wire reel to rotate through a connecting rod, and the gear wire reel pulls the first wire to make the rigid part slide toward the toe direction along the extension direction of the sole of the foot; the operating member is rotated counterclockwise, and the operating member drives the gear wire reel to rotate through a connecting rod, and the gear wire reel pulls the second wire to make the rigid part slide toward the heel direction along the extension direction of the sole of the foot.

[0009] The fifth technical solution is based on the fourth technical solution, and further includes a conduit that is sleeved on the outside of the wire and the rigid part, the conduit includes a first conduit, a second conduit and a third conduit, the first conduit is suitable for being installed in the first groove and sleeved on the outside of the rigid part, the second conduit covers the wire, and the third conduit is suitable for being installed in the second groove and the third groove; the first conduit is connected to the third conduit; the first conduit is a transparent conduit, the second conduit is a translucent conduit, and the third conduit is a hard hollow shell tube; the second conduit covers the wire and passes through the third conduit to the first conduit to connect the two ends of the rigid part and the gear wire take-up.

[0010] The sixth technical solution is based on the fifth technical solution, wherein the movement range of the rigid member in the first conduit is limited to not exceed the length of the first conduit.

[0011] The seventh technical solution is based on the sixth technical solution, wherein the number of the first grooves is several, and the several first grooves are evenly distributed and arranged along a direction perpendicular to the extension direction of the sole, each first groove is respectively connected to the second groove and the third groove, and the number of the rigid parts is consistent with the number of the first grooves.

[0012] The eighth technical solution is based on the first technical solution, wherein the midsole body is made of foam material.

[0013] The ninth technical solution is based on the first technical solution, wherein the rigid component is one of carbon fiber, TPU or nylon materials.

[0014] The tenth technical solution is based on any one of the first to ninth technical solutions, wherein a shoe adopts the above-mentioned adjustable bending stiffness midsole.

[0015] From the above description of the various embodiments of the present invention, it can be seen that, compared with the prior art, the various embodiments of the present invention have the following beneficial effects:

[0016] In the first technical solution and related embodiments, through the operating member in the adjustment device, the user can adjust the position of the rigid member in the first groove according to his own needs or foot comfort. This personalized adjustment method enables the midsole to adapt to the sports needs and wearing conditions of different users, providing a more fitting and comfortable wearing experience. This design breaks the limitation of the fixed bending stiffness of the midsole of traditional sports shoes, and improves the adaptability and personalization of the shoes. Secondly, the slidable installation of the rigid member along the extension direction of the sole enables the shoes to provide more accurate support and stability in different sports scenes. For example, in basketball or running sports scenes that require high forefoot bending stiffness, the rigid member can be moved to the forefoot to improve the forefoot bending stiffness of the shoe and improve sports performance; in daily wear or low-intensity sports scenes, the rigid member can be moved backward to reduce the forefoot bending stiffness of the shoe and improve wearing comfort. In addition, the setting of the adjustment device makes the adjustment process simple and convenient. The user only needs to manually rotate the operating member, and the driving member can drive the rigid member to slide in the first groove along the extension direction of the sole through the wire, realizing real-time adjustment of the bending stiffness, providing users with a more comfortable wearing experience.

[0017] In the second technical solution and related embodiments, by equipping a mounting box for accommodating the driving member, the driving member can be conveniently installed and the service life of the product is increased. By integrating the driving member in the mounting box and installing it inside the midsole body, a hidden layout of the entire adjustment device is achieved. The adjustment device uses a gear wire take-up and a connecting rod as driving members, so that the movement of the rigid member is more precise and stable. The gear wire take-up can control the position of the rigid member by retracting and releasing the wire, and the connecting rod can effectively transmit the user's rotation operation to the gear wire take-up, thereby realizing precise adjustment of the horizontal movement of the rigid member. This design not only improves the accuracy of the adjustment, but also makes the adjustment process more stable and reliable.

[0018] In the third technical solution and related embodiments, a second groove and a third groove are added to the midsole design with adjustable bending stiffness, and are connected to the first groove. At the same time, the wires are connected to both ends of the rigid part and arranged in the three grooves, which forms a stable line channel. The arrangement of the wires makes the movement of the rigid part more stable and less susceptible to external interference, thereby ensuring the stability of the midsole during the adjustment process. The wires are arranged in the three grooves, which not only reduces the exposed part of the wires and reduces the risk of damage, but also makes the design of the entire midsole more neat and beautiful.

[0019] In the fourth technical solution and related embodiments, the first wire and the second wire are designed to connect the two ends of the rigid part to form a closed loop, so that the rigid part can maintain a stable connection and guidance during movement. The reasonable layout of the wires through the first groove, the second groove and the third groove ensures the smoothness and stability of the rigid part when it moves along the extension direction of the sole. This design not only simplifies the structure of the adjustment device, but also improves the reliability of the entire system. Clockwise and counterclockwise rotation of the operating member can respectively realize the movement of the rigid part in the toe direction and the heel direction. This two-way adjustment design allows users to flexibly adjust the bending stiffness of the midsole according to actual needs to meet the needs of different sports scenarios. At the same time, the operating member is set close to the heel, which is convenient for users to adjust at any time, thereby improving the convenience of use.

[0020] In the fifth technical solution and related embodiments, the design of the adjustable bending stiffness midsole is optimized by sleeve-arranging the conduit outside the wire and the rigid part. First, the design of the first conduit not only ensures that the rigid part can be stably installed in the first groove and move smoothly along the extension direction of the sole, but also significantly reduces the friction between the rigid part and the surrounding materials during the movement, thereby improving the stability and reliability of its movement. The introduction of the second conduit provides protection for the wire, effectively preventing the wire from being damaged by friction or compression inside the midsole. The third conduit is a hard hollow shell tube, which ensures that the second conduit coated wire can smoothly pass through the second groove and the third groove, and maintain a stable connection with the rigid part and the driving part. This design avoids potential interference or damage to the wire by the complex structure inside the midsole body. The connection design of the first conduit and the third conduit ensures the smooth transition of the second conduit coated with the wire between the two, avoiding any possible obstruction or jamming. In addition, the first conduit is made of transparent material, so that the user can clearly observe the movement of the rigid part in the conduit, enhance the user's intuitive feeling, and help the user to more accurately understand and control the bending stiffness of the midsole. By observing the position and movement of the rigid parts, users can flexibly adjust the operating parts according to their needs to achieve personalized bending stiffness adjustment. Considering that the wire material may be hard, a translucent material is selected for the second catheter to prevent the wire from wearing or damaging the second catheter during movement, further enhancing the durability and stability of the entire system.

[0021] In the sixth technical solution and related embodiments, by limiting the range of movement of the rigid member in the first conduit to not exceed the length of the first conduit, the stability and controllability of the rigid member during movement are ensured. This prevents the rigid member from being damaged or failing due to exceeding a predetermined range during movement, thereby improving the durability and reliability of the midsole bending stiffness adjustment.

[0022] In the seventh technical solution and related embodiments, a plurality of rigid parts are provided, and each rigid part corresponds to a first groove, so as to realize multi-point adjustment of the bending stiffness of the midsole. This multi-point adjustment method enables the midsole to obtain suitable bending stiffness at different positions, thereby improving the adaptability and comfort of the shoe. Secondly, the first grooves are evenly distributed and arranged perpendicular to the extension direction of the sole, ensuring the uniform layout of the rigid parts on the midsole. This uniform layout is not only conducive to maintaining the stability of the midsole structure, but also makes the shoe more uniform when subjected to force, reducing damage or deformation caused by uneven force. In addition, each first groove is respectively connected to the second groove and the third groove to form a complete wire channel. This design allows the wire to pass smoothly between the grooves, ensuring the stability and reliability of the rigid parts during movement.

[0023] In the eighth technical solution and related embodiments, in order to ensure the comfort of the midsole, the midsole body is made of foam material. The foam material is lightweight, which greatly reduces the overall weight of the shoe while maintaining sufficient strength. Lightweight shoes not only bring a more relaxed and comfortable wearing experience to the wearer, but also help improve the sports performance of the shoe, making the wearer more flexible and agile during exercise. The foam material has good resilience. This means that after being subjected to external force, the midsole can quickly return to its original shape to maintain the stability and comfort of the shoe. This resilience also helps to reduce fatigue on the feet caused by long-term wear.

[0024] In the ninth technical solution and related embodiments, carbon fiber, TPU or nylon materials are used as rigid parts of the midsole with adjustable bending stiffness. These materials have high strength and stiffness, and can effectively improve the bending stiffness of the midsole. Whether it is the high strength and high rigidity of carbon fiber, the high elasticity and wear resistance of TPU, or the strength and toughness of nylon, the bending stiffness of the forefoot of the shoe can be improved, thereby improving the athletic performance of jumping, running, shearing and other sports. In addition, these materials have good durability. They can withstand long-term use and wear, maintain the stability of the performance of the midsole, and extend the service life of the shoe.

[0025] In the tenth technical solution and related embodiments, the midsole design realizes flexible control of bending stiffness through adjustment of the rigid parts, so as to provide personalized bending stiffness and comfort according to the needs of different wearers and sports scenes. Whether it is a professional sports environment that requires high bending stiffness, or a daily leisure wear and low-intensity mass fitness environment that requires low bending stiffness, it is possible to find a bending stiffness that better matches the user's own state and scene to meet their personalized needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the bottom of the bottom body and the rigid parts in the embodiment;

[0028] Figure 2 This is a schematic diagram of the bottom of the bottom body in the embodiment;

[0029] Figure 3 This is a schematic diagram of the upper part of the bottom body in the embodiment;

[0030] Figure 4 It is a schematic diagram of the outer side surface of the base body in the embodiment;

[0031] Figure 5 Schematic diagram of the inner side of the base body in the embodiment.

[0032] Description of main reference numerals:

[0033] Midsole body 1; rigid part 2; adjustment device 3; forefoot part 11; middle waist part 12; heel part 13; first groove 14; second groove 15; third groove 16; first wire 17; second wire 18; first conduit 19; third conduit 20; first wire outlet end 21; first wire inlet end 22; second wire outlet end 23; second wire inlet end 24; operating part 31; installation box 32; gear wire take-up device 33. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0035] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0036] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0037] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0038] In the claims, specification and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0039] See also Figures 1 to 5 ,like Figures 1 to 5 As shown, a midsole with adjustable bending stiffness includes a midsole body 1, a rigid member 2, an adjustment device 3, a wire and a conduit.

[0040] The midsole body 1 is a crucial component in the structure of footwear. It is located between the sole and the insole and provides the support, shock absorption and comfort required by the foot. The midsole body 1 is made of foam material. In this embodiment, in order to ensure the comfort of the midsole, the midsole body 1 is made of foam material. The foam material has the characteristic of being lightweight, which greatly reduces the overall weight of the shoe while maintaining sufficient strength in the midsole. Lightweight shoes not only bring a more relaxed and comfortable wearing experience to the wearer, but also help to improve the sports performance of the shoe, making the wearer more flexible and agile during exercise. The foam material has good resilience. This means that after being subjected to external force, the midsole can quickly return to its original shape to maintain the stability and comfort of the shoe. This resilience also helps to reduce the fatigue of the feet caused by long-term wear.

[0041] The orientation of the midsole body 1 is that the outer side of the foot is the outer side, the inner side of the foot is the inner side, the toe part is the front side, the heel part is the back side, the part in contact with the sole of the foot is the top side, and the part in contact with the ground is the bottom side. The midsole body 1 is divided into three parts: front, middle and back. Specifically, the midsole body 1 is provided with a forefoot part 11, a middle waist part 12 and a heel part 13. The forefoot part 11 corresponds to the forefoot part 11, that is, the area between the toes and the middle of the sole of the foot; the forefoot part 11 bears most of the impact force during walking, running and jumping, so the design of this area needs to pay special attention to shock absorption and support performance. The heel part 13 corresponds to the heel part 13 of the foot, which is an important area for supporting and stabilizing the foot. The design of the heel part 13 needs to ensure that the foot does not shake when walking or exercising, and at the same time provide a certain shock absorption effect. The middle waist part 12 is located between the forefoot part 11 and the heel part 13, and is a bridge connecting the front and back parts. The design of the middle waist portion 12 should not only take into account the coordination with the front and rear portions, but also take into account the flexibility of the foot during flexion and extension.

[0042] The midsole body 1 is provided with a first groove 14, a second groove 15 and a third groove 16 in a direction close to the ground, that is, the first groove 14, the second groove 15 and the third groove 16 are provided below the midsole body 1 and close to the ground. The first groove 14 penetrates the forefoot portion 11, the middle waist portion 12 and the heel portion 13 along the extension direction of the sole; the existence of the first groove 14 enables the midsole body 1 to adjust the bending stiffness according to different sports requirements while maintaining the stability of the overall structure. Specifically, the number of the first grooves 14 is several, and the several first grooves 14 are evenly distributed and arranged along the direction perpendicular to the extension direction of the sole. In this embodiment, the number of the first grooves 14 is four. The second groove 15 extends from the toe position of the forefoot portion 11; the second groove 15 can also be used as a channel for a wire or a cable to connect the adjustment device 3 with the rigid member 2. The third groove 16 extends from the heel position of the heel portion 13, and the third groove 16 can also be used as a channel for a wire or a cable to ensure that the connection between the adjustment device 3 and the rigid member 2 is smooth and unobstructed. The first groove 14 is communicated with the second groove 15 and the third groove 16 respectively. Specifically, each first groove 14 is communicated with the second groove 15 and the third groove 16 respectively.

[0043] Rigid member 2, such as Figure 1As shown, it is suitable for being slidably installed in the first groove 14 along the extension direction of the sole; the number of rigid members 2 is several, and the number of rigid members 2 is consistent with the number of first grooves 14. In this embodiment, the number of rigid members 2 is four. The rigid member 2 is one of carbon fiber, TPU or nylon material. In this embodiment, by setting a plurality of rigid members 2, and each rigid member 2 corresponds to a first groove 14, multi-point adjustment of the bending stiffness of the midsole is achieved. This multi-point adjustment method enables the midsole to obtain suitable bending stiffness at different positions, thereby improving the adaptability and comfort of the shoe. Secondly, the first grooves 14 are evenly distributed and arranged along the direction perpendicular to the extension direction of the sole, ensuring that the layout of the rigid members 2 on the midsole is uniform. This uniform layout is not only conducive to maintaining the stability of the midsole structure, but also makes the shoe more uniform when subjected to force, reducing damage or deformation caused by uneven force. In addition, each first groove 14 is connected to the second groove 15 and the third groove 16 respectively, forming a complete wire channel. This design allows the wire to pass smoothly between the grooves, ensuring the stability and reliability of the rigid member 2 during movement. In this embodiment, carbon fiber, TPU or nylon material is used as the rigid part 2 of the midsole with adjustable bending stiffness. These materials have high strength and stiffness, and can effectively improve the support performance of the midsole. Whether it is the high strength and high rigidity of the carbon plate, the high elasticity and wear resistance of TPU, or the strength and toughness of nylon, the bending stiffness of the forefoot of the shoe can be improved, thereby improving the sports performance of jumping, running, shearing and other sports. In addition, these materials have good durability. They can withstand long-term use and wear, keep the performance of the midsole stable, and extend the service life of the shoes.

[0044] Adjustment device 3, such as Figures 1 to 4 As shown, it comprises an operating member 31, a driving member and a mounting box 32. The adjusting device 3 is a key component of the midsole with adjustable bending stiffness, which allows the user to precisely control the bending stiffness of the midsole through simple operations.

[0045] Operating member 31, such as Figure 4 As shown, it is in the form of a twister, which is arranged at the heel of the outer side of the midsole body 1, so as to facilitate user operation. The user can rotate the operating member 31 clockwise or counterclockwise to adjust the bending stiffness of the midsole.

[0046] Drive parts, such as Figure 1The driving member is installed at the position of the middle waist 12 near the heel 13 of the midsole body 1 near the sole direction, that is, the driving member is installed above the midsole body 1 near the sole direction. The driving member is the core part of the adjustment device 3, which receives the signal from the operating member 31 and converts it into an adjustment action on the rigid member 2. The driving member includes a gear wire take-up 33 and a connecting rod. The gear wire take-up 33 is a key component of the driving member, which receives the rotational force transmitted by the operating member 31 by meshing with the connecting rod, and converts this rotational force into pulling or releasing the wire. One end of the wire is connected to the rigid member 2, so when the gear wire take-up 33 rotates, it will pull or release the rigid member 2 through the wire, thereby changing its position in the first groove 14. The connecting rod is a bridge connecting the operating member 31 and the gear wire take-up 33 (not shown in the figure). When the operating member 31 rotates, the connecting rod will drive the gear wire take-up 33 to rotate together, thereby achieving the adjustment of the rigid member 2. In this embodiment, the adjustment device 3 uses a gear wire take-up device 33 and a connecting rod as a driving member, so that the movement of the rigid member 2 is more precise and stable. The gear wire take-up device 33 can control the position of the rigid member 2 by retracting and releasing the wire, and the connecting rod can effectively transmit the user's rotation operation to the gear wire take-up device 33, so as to achieve precise adjustment of the horizontal movement of the rigid member 2. This design not only improves the accuracy of the adjustment, but also makes the adjustment process more stable and reliable.

[0047] The installation box 32, such as Figure 3 As shown, the installation box 32 is used to accommodate the driving member, protect it from the influence of the external environment, and ensure its stable operation. The installation box 32 is usually installed at a position close to the heel 13 of the middle waist portion 12 of the midsole body 1 close to the sole direction, which is convenient for user operation and can ensure that the adjustment device 3 has an effective effect on the bending stiffness of the midsole. In this embodiment, by equipping the installation box 32 for accommodating the driving member, convenient installation and disassembly of the driving member is achieved. This modular design not only simplifies the manufacturing process, but also facilitates subsequent maintenance and replacement, and improves the maintainability and service life of the product. By integrating the driving member in the installation box 32 and installing it inside the midsole body 1, a hidden layout of the entire adjustment device 3 is achieved.

[0048] Wire, such as Figure 1 As shown, the wires connect the two ends of the rigid part 2 and are connected to the driving part. The wires include a first wire 17 and a second wire 18. The first wire 17 connects one end of the rigid part 2 near the front palm part 11 and is connected to the gear wire take-up device 33 through the first groove 14 and the second groove 15; the second wire 18 connects the other end of the rigid part 2 near the middle waist part 12 and is connected to the gear wire take-up device 33 through the first groove 14 and the third groove 16. The first wire 17, the rigid part 2 and the second wire 18 form a closed loop through the gear wire take-up device 33. Specifically, as Figure 1 and Figure 5As shown, the first wire 17 is connected to one end of the rigid member 2 near the forefoot 11, and passes through the first groove 14 and the second groove 15 to pass through the first wire 17 outlet end at the big toe, extends out of the midsole body 1, and re-enters the adjustment device 3 near the sole of the foot above the midsole body 1 along the inner side edge of the midsole body 1 to the first wire 17 inlet end in the direction of the middle waist 12, and is connected to the gear wire take-up device 33. Similarly, the second wire 18 is connected to the other end of the rigid member 2 near the middle waist 12, and passes through the first groove 14 and the third groove 16 to pass through the second wire 18 outlet end at the heel position, extends out of the midsole body 1, and re-enters the adjustment device 3 near the sole of the foot above the midsole body 1 along the inner side edge of the midsole body 1 to the second wire 18 inlet end in the direction of the middle waist 12, and is connected to the gear wire take-up device 33. At this point, the first wire 17, the rigid member 2, and the second wire 18 form a closed loop through the gear wire take-up device 33. By manually operating the operating member 31, the driving member can drive the rigid member 2 to move horizontally along the extension direction of the sole to the toe direction or the heel direction through the wire. Specifically, the operating member 31 is rotated clockwise, and the operating member 31 drives the gear wire take-up 33 to rotate through the connecting rod, and the gear wire take-up 33 moves the rigid member 2 along the extension direction of the sole to the toe direction by pulling the first wire 17; the operating member 31 is rotated counterclockwise, and the operating member 31 drives the gear wire take-up 33 to rotate through the connecting rod, and the gear wire take-up 33 moves the rigid member 2 along the extension direction of the sole to the heel direction by pulling the second wire 18. In this embodiment, the first wire 17 and the second wire 18 are designed to connect the two ends of the rigid member 2 to form a closed loop, so that the rigid member 2 can maintain a stable connection and guidance during the movement. The reasonable layout of the wire through the first groove 14, the second groove 15 and the third groove 16 ensures the smoothness and stability of the rigid member 2 when it moves along the extension direction of the sole. This design not only simplifies the structure of the adjustment device 3, but also improves the reliability of the entire system. Rotating the operating member 31 clockwise and counterclockwise can respectively move the rigid member 2 toward the toe and heel. This two-way adjustment design allows users to flexibly adjust the bending stiffness of the midsole according to actual needs to meet the needs of different sports scenes. At the same time, the operating member 31 is set close to the heel, which is convenient for users to adjust at any time, improving the convenience of use.

[0049] Catheter, such as Figure 2As shown, the catheter is sheathed on the outside of the wire and the rigid member 2. The catheter includes a first catheter 19, a second catheter and a third catheter 20. The first catheter 19 is suitable for being installed in the first groove 14 and sheathed on the outside of the rigid member 2, and the first catheter 19 is a transparent catheter; the second catheter is sheathed on the outside of the wire (not shown in the figure), and the second catheter is a translucent catheter; the third catheter 20 is suitable for being installed in the second groove 15 and the third groove 16, and the third catheter 20 is a hard hollow shell tube; specifically, the third catheter 20 adopts a hard shell tube with discontinuous windows and half-open. The first catheter 19 is connected with the third catheter 20; specifically, a plurality of first catheters 19 are connected with the third catheter 20 in the second groove 15 along the first groove 14, and the connection position between the first catheter 19 and the third catheter 20 is a three-way structure of a hard shell, which facilitates the first catheter 19 to connect with the third catheter 20. In this embodiment, by sheathing the catheter on the outside of the wire and the rigid member 2, the design of the adjustable bending stiffness midsole is optimized. First, the design of the first conduit 19 not only ensures that the rigid part 2 can be stably installed in the first groove 14 and move smoothly along the extension direction of the sole, but also significantly reduces the friction between the rigid part 2 and the surrounding materials during the movement, thereby improving the stability and reliability of its movement. The introduction of the second conduit provides protection for the wire, effectively preventing the wire from being damaged by friction or compression inside the midsole body 1. The third conduit 20 is a hard hollow shell tube, which ensures that the second conduit coated wire can smoothly pass through the second groove 15 and the third groove 16, and maintain a stable connection with the rigid part 2 and the driving part. This design avoids the potential interference or damage to the wire by the complex structure inside the midsole body 1. The connection design of the first conduit 19 and the third conduit 20 ensures a smooth transition of the wire between the two and avoids any possible obstruction or jamming. In addition, the first conduit 19 is made of transparent material, so that the user can clearly observe the movement of the rigid part 2 in the conduit, enhances the user's intuitive feeling, and helps the user to more accurately understand and control the bending stiffness of the midsole. By observing the position and movement state of the rigid member 2, the user can flexibly adjust the operating member 31 according to their own needs to achieve personalized bending stiffness adjustment. Considering that the wire material may be hard, a translucent material is selected for the second catheter to prevent the wire from wearing or damaging the second catheter during movement, further enhancing the durability and stability of the entire system.

[0050] like Figure 1As shown, the range of movement of the rigid member 2 in the first conduit 19 is limited to not exceed the length of the first conduit 19, that is, the range of movement of the rigid member 2 in the first conduit 19 is limited to not exceed the length of the first groove 14. In this embodiment, by limiting the range of movement of the rigid member 2 in the first conduit 19 to not exceed the length of the first conduit 19, the stability and controllability of the rigid member 2 during movement are ensured. This prevents the rigid member 2 from being damaged or failing due to exceeding a predetermined range during movement, thereby improving the durability and reliability of the midsole bending stiffness adjustment.

[0051] In this embodiment, through the operating member 31 in the adjustment device 3, the user can adjust the position of the rigid member 2 in the first groove 14 according to their own needs or foot comfort. This personalized adjustment method enables the midsole to adapt to the gait characteristics and wearing habits of different users, providing a more fitting and comfortable wearing experience. This design breaks the limitation of the fixed bending stiffness of the midsole of traditional sports shoes, and improves the adaptability and personalization of the shoes. Secondly, the slidable installation of the rigid member 2 along the extension direction of the sole enables the shoes to provide more precise support and stability in different sports scenes. For example, in basketball or running sports scenes that require high forefoot bending stiffness, the rigid member 2 can be moved to the forefoot 11 to improve the forefoot bending stiffness of the shoe and improve sports performance; in daily wear or low-intensity sports scenes, the rigid member 2 can be moved to the heel 13 to reduce the forefoot bending stiffness of the shoe and improve wearing comfort. In addition, the setting of the adjustment device 3 makes the adjustment process simple and convenient. The user only needs to manually rotate the operating member 31, and the driving member can drive the rigid member 2 to slide in the first groove 14 along the extension direction of the sole through the wire, thereby achieving real-time adjustment of the bending stiffness and providing the user with a more comfortable wearing experience.

[0052] The following is the working principle of the adjustable bending stiffness midsole.

[0053] When the user rotates the operating member 31 clockwise, the connecting rod drives the gear wire take-up 33 to rotate, and the gear wire take-up 33 pulls the first wire 17 to make the plurality of rigid members 2 slide in the first conduit 19 in the first groove 14 toward the toe along the extension direction of the sole, thereby increasing the bending stiffness of the midsole. On the contrary, when the user rotates the operating member 31 counterclockwise, the gear wire take-up 33 releases the second wire 18, so that the rigid member 2 moves in the first conduit 19 in the first groove 14 toward the heel along the extension direction of the sole, thereby reducing the bending stiffness of the midsole.

[0054] A shoe adopts the above-mentioned adjustable bending stiffness midsole. The midsole design realizes flexible control of bending stiffness through the adjustment of the rigid member 2, so that personalized bending stiffness and comfort can be provided according to the needs of different wearers and sports scenes. Whether it is a professional sports environment that requires high bending stiffness, or a daily leisure wear and low-intensity mass fitness sports environment that requires low bending stiffness, it is possible to find a bending stiffness that better matches the user's own state and scene to meet their personalized needs. Specifically, the shoe includes multiple structural parts such as an upper, a sole and an insole, which together constitute a complete shoe to ensure its comfort, functionality and durability. The upper is the outer fabric of the shoe, which is used to wrap the foot. Common upper materials include leather, cloth, synthetic materials, etc. The insole is the cushioning layer inside the shoe, located between the upper and the sole. The main function of the insole is to provide comfort and cushioning for the foot to reduce the impact on the foot when walking or running. The insole is usually made of materials such as sponge, leather, and cloth. The sole is actually composed of two main parts: the midsole and the outsole. These two parts are usually made independently and then bonded together to form a complete sole. The outsole is the bottom of the shoe that extends outward. It generally has excellent wear resistance and grip. Its main function is to reduce the probability of eversion, protect the foot and provide support. In this embodiment, the adjustable bending stiffness midsole can be pulled out of the shoe cavity and is not bonded to the outsole. It is an independent midsole, which is convenient for adjusting the bending stiffness.

[0055] The present application provides a midsole and a shoe with adjustable bending stiffness, wherein the midsole achieves adjustable bending stiffness through an adjustment device 3 .

[0056] The description of the above specification and embodiments is used to explain the protection scope of the utility model, but does not constitute a limitation on the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent replacements or other improvements to the embodiments of the utility model or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the utility model.

Claims

1. A midsole with adjustable bending stiffness, characterized in that: include: A midsole body (1) is provided with a forefoot portion (11), a middle waist portion (12) and a heel portion (13), wherein the forefoot portion (11) corresponds to the forefoot portion (11), the heel portion (13) corresponds to the heel portion (13), and the middle waist portion (12) is located between the forefoot portion (11) and the heel portion (13); the midsole body (1) is provided with a first groove (14) in a direction close to the ground, and the first groove (14) passes through the forefoot portion (11), the middle waist portion (12) and the heel portion (13) along the extension direction of the sole; A rigid member (2) adapted to be slidably mounted in the first groove (14) along the extension direction of the sole of the foot; and The adjusting device (3) comprises an operating member (31) and a driving member, wherein the operating member (31) is connected to the driving member, and the driving member is installed at a position of the midsole body (1) near the waist portion (12) in the direction of the sole and near the heel portion (13); both ends of the rigid member (2) are connected to the driving member via wires; The operating member (31) is manually controlled, and the driving member can drive the rigid member (2) to slide horizontally along the extension direction of the sole of the foot toward the toe direction or the heel direction through a wire.

2. The adjustable bending stiffness midsole according to claim 1, characterized in that: The adjusting device (3) further comprises an installation box (32), wherein the installation box (32) is used to accommodate the driving member; the driving member comprises a gear wire take-up device (33) and a connecting rod, wherein the connecting rod is meshed with the gear wire take-up device (33); the operating member (31) is arranged at the heel of the outer side of the midsole body (1), and the operating member (31) is connected to the connecting rod; the operating member (31) is manually rotated, and the operating member (31) drives the gear wire take-up device (33) to rotate through the connecting rod, and the gear wire take-up device (33) causes the rigid member (2) to slide horizontally along the extension direction of the sole of the foot toward the toe direction or the heel direction by pulling the wire.

3. The adjustable bending stiffness midsole according to claim 2, characterized in that: The midsole body (1) is further provided with a second groove (15) and a third groove (16) in a direction close to the ground, the second groove (15) extending from the toe position of the forefoot portion (11) along the toe edge, the third groove (16) extending from the heel position of the heel portion (13) along the heel edge, the first groove (14) being respectively connected to the second groove (15) and the third groove (16), the wire connecting the two ends of the rigid member (2) and arranged in the first groove (14), the second groove (15) and the third groove (16).

4. The adjustable bending stiffness midsole according to claim 3, characterized in that: The wire comprises a first wire (17) and a second wire (18); the first wire (17) is connected to one end of the rigid part (2) close to the front palm part (11), and is connected to the gear wire take-up device (33) through the first groove (14) and the second groove (15); the second wire (18) is connected to the other end of the rigid part (2) close to the middle waist part (12), and is connected to the gear wire take-up device (33) through the first groove (14) and the third groove (16); the first wire (17), the rigid part (2) and the second wire (18) form a closed loop through the gear wire take-up device (33); The operating member (31) is rotated clockwise, and the operating member (31) drives the gear wire take-up device (33) to rotate through the connecting rod, and the gear wire take-up device (33) causes the rigid member (2) to slide along the extension direction of the sole of the foot toward the toe direction by pulling the first wire (17); The operating member (31) is rotated counterclockwise, and the operating member (31) drives the gear wire take-up device (33) to rotate through the connecting rod. The gear wire take-up device (33) pulls the second wire (18) to make the rigid member (2) slide along the extension direction of the sole of the foot toward the heel.

5. The adjustable bending stiffness midsole according to claim 4, characterized in that: The invention also comprises a conduit which is sleeved on the outside of the wire and the rigid part (2), wherein the conduit comprises a first conduit (19), a second conduit and a third conduit (20), wherein the first conduit (19) is suitable for being installed in the first groove (14) and sleeved on the outside of the rigid part (2), the second conduit covers the wire, and the third conduit (20) is suitable for being installed in the second groove (15) and the third groove (16); the first conduit (19) is connected to the third conduit (20); the first conduit (19) is a transparent conduit, the second conduit is a translucent conduit, and the third conduit (20) is a hard hollow shell tube; the second conduit covers the wire and passes through the third conduit to the first conduit to connect the two ends of the rigid part and the gear wire take-up device (33).

6. The adjustable bending stiffness midsole according to claim 5, characterized in that: The movement range of the rigid member (2) in the first conduit (19) is limited to not exceed the length of the first conduit (19).

7. The adjustable bending stiffness midsole according to claim 6, characterized in that: The number of the first grooves (14) is a plurality, and the plurality of the first grooves (14) are evenly distributed and arranged along a direction perpendicular to the extension direction of the sole of the foot, and each of the first grooves (14) is respectively connected to the second groove (15) and the third groove (16), and the number of the rigid members (2) is consistent with the number of the first grooves (14).

8. The adjustable bending stiffness midsole according to claim 1, characterized in that: The midsole body (1) is made of foaming material.

9. The adjustable bending stiffness midsole according to claim 1, characterized in that: The rigid part (2) is made of one of carbon fiber, TPU or nylon materials.

10. A shoe, characterized in that: It adopts an adjustable bending stiffness midsole as described in any one of claims 1 to 9.

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