Fully degradable shoe support and fully degradable shoe

Abstract

The utility model discloses a fully degradable shoe support and a fully degradable shoe containing the support. The support frame comprises a first support structure and a second support structure. The first support structure is arranged corresponding to the heel upper of the shoe. The second support structure comprises a first area and a second area, which are arranged corresponding to the midfoot and heel positions of the human body respectively. The first area is arranged to penetrate in the transverse direction of the sole to form a chamber with two ends connected. The second area is arranged to penetrate in the longitudinal direction of the sole to form a longitudinal hole to increase the surface area of ​​the support and reduce the total amount of material of the support. The utility model arranges two penetrating hollow structures in the second support structure to increase the surface area of ​​the support and reduce the total amount of material of the support. At the same time, the support adopts a degradable support material, and a matte layer is arranged on the inner surface and the outer surface of the support to increase the surface roughness of the support, which can increase the surface area of ​​the support for microorganisms to attach to. The utility model has the advantages of high efficiency and full degradation.

Description

Technical Field

[0001] The utility model relates to the field of shoes, in particular to a support piece for fully degradable shoes and a fully degradable shoe containing the support piece. Background Art

[0002] In order to achieve stability, support, rebound and other functionalities, sports shoes cannot achieve the purpose with only the midsole and upper. They need to be supplemented with supporting parts to achieve these functions. Supporting parts are generally plastics or elastomers with high hardness and elastic composite materials. These materials are mostly TPU, PA, TPR, and carbon fiber, glass fiber composite materials, which are difficult to degrade in nature. With the scrapping of shoes, the classification and treatment of waste shoe materials has become more difficult, causing serious pollution to the environment.

[0003] In order to respond to the national call and reduce environmental pollution, people have tried many ways to solve this problem, such as spinning recycled plastics to make recycled uppers, or recycling some materials from discarded shoes. However, this only alleviates the pollution of the environment by discarded shoes to a certain extent, and has not fundamentally solved the problem.

[0004] At present, in order to reduce the components of non-degradable materials, existing degradable shoes rarely use support parts and generally adopt simple upper and sole structures. For some products that need to improve support performance, the support parts used are non-fully degradable materials, such as (TPU, PA, carbon fiber composite materials, etc.).

[0005] In recent years, with the development of science and technology and the enhancement of people's environmental awareness, some degradable concept footwear products have been launched one after another. The Chinese patent with patent number CN215958561U discloses a children's shoe, the upper part of which introduces degradable materials. The Chinese patent with patent number CN214230098U discloses a disposable slipper with antibacterial and mite removal and degradable functions. The sole, upper, sole padding and suture of the disposable slipper are all made of degradable materials and are biodegradable; Beijing University of Chemical Technology has also disclosed a fully degradable white shoe, which consists of an upper, a sole and an insole. The above-mentioned shoes can meet the wearing needs of certain scenarios and also have degradable elements, but either in order to achieve functionality, the whole shoe cannot be degraded, or in order to achieve the purpose of degradation of the whole shoe, the structural design is simplified and the types of accessories and materials are reduced. It cannot meet the sports function requirements, and there is still a certain gap from the stability, support, rebound, shock absorption, etc. required by sports shoes. This type of shoe is generally composed of an outsole and an upper, with few supporting parts used. The entire shoe has a simple structure and is difficult to achieve functionality, which greatly limits the sports properties of degradable shoes. Only by adding supporting parts can the functions of degradable shoes be more complete and their applications more extensive.

[0006] Therefore, there are problems in the prior art such as the lack of degradable supporting parts in fully degradable shoes, insufficient sports performance of the shoes, and the inability to degrade the supporting parts or low degradation efficiency. Utility Model Content

[0007] The purpose of the utility model is to provide a fully degradable shoe support and a fully degradable shoe comprising the support, which can assist the fully degradable shoe to achieve stable support, shock absorption and rebound functions under the premise of being degradable. The specific technical solution is as follows:

[0008] A fully degradable shoe support comprises a first support structure and a second support structure. The first support structure is arranged corresponding to the heel upper of the shoe. The second support structure comprises a first area and a second area, which are arranged corresponding to the midfoot and heel positions of the human body respectively. The first area is arranged to penetrate in the transverse direction of the sole to form a chamber with two ends connected. The second area is arranged to penetrate in the longitudinal direction of the sole to form a longitudinal hole, so as to increase the surface area of ​​the support and reduce the total amount of material of the support.

[0009] Furthermore, the second region of the second support structure extends upward from one end away from the toe and is connected to the first support structure to enhance the supporting force of the first support structure in the vertical direction while reducing the connection area.

[0010] Furthermore, the first area of ​​the second supporting structure includes a first surface and a second surface, and the first surface is suspended at both ends of the sole in the transverse direction to enhance the elastic deformation of the first surface.

[0011] Furthermore, a groove is arranged on the second surface of the first region, and a supporting sheet is arranged in the groove to enhance the rigidity of the first region.

[0012] Furthermore, the second area of ​​the second supporting structure includes an annular structure, the annular wall of which extends upward to support the outer side of the midsole at the heel position.

[0013] Furthermore, the first support structure is a degradable polymer with a material hardness of 80-90A, and the second support structure is a degradable polymer with a material hardness of 80-98A. The first support structure and the second support structure are completely degradable.

[0014] Furthermore, the material strength of the support sheet is greater than the material hardness of the second support structure, and the support sheet is a degradable polymer with a material hardness of 60-80D and can be completely degraded.

[0015] Furthermore, the first supporting structure and the second supporting structure are integrally formed.

[0016] Furthermore, the support member also includes a matte layer to increase the surface roughness of the support member.

[0017] A fully degradable shoe comprises the above-mentioned fully degradable shoe support.

[0018] The fully degradable shoe support and the fully degradable shoe provided by the utility model have the following advantages:

[0019] 1. By providing lateral and forward support to the left and right sides and rear sides of the heel of the shoe around the first support structure arranged on the heel upper of the shoe, the heel is stabilized and the risk of injury caused by lateral or backward displacement and sliding of the heel of the athlete in the shoe is reduced.

[0020] 2. The second support structure is provided to provide support for the arch and heel without affecting the flexion of the forefoot joint; one end of the second support structure is connected to the first support structure to enhance the supporting force of the first support structure and reduce the lateral shear stress on the first support structure, so that the stabilizing effect on the heel is stronger.

[0021] 3. The second support structure is provided with two through-hole structures to increase the surface area of ​​the support member and reduce the total amount of material of the support member.

[0022] 4. The support parts are made of degradable support materials to achieve full degradation of the support parts.

[0023] 5. By adding bamboo fiber to the support sheet, the support force is enhanced and biodegradable.

[0024] 6. A matte layer is provided on the inner and outer surfaces of the support to increase the surface roughness of the support. During industrial composting, the surface area of ​​the support where microorganisms attach can be increased, thereby improving the degradation efficiency of the material.

[0025] 7. The support member is set as an integrated structure, forming a semi-enclosed stable structure in the midsole at the heel position, thereby forming a degradable stable support frame structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front view of the first embodiment of the support member in the utility model.

[0027] Figure 2 It is a side view of the first embodiment of the support member in the utility model.

[0028] Figure 3 The explosion of the embodiment 1 of the support member of the utility model Figure 1 .

[0029] Figure 4 The explosion of the embodiment 1 of the support member of the utility model Figure 2 .

[0030] Figure 5 It is a schematic diagram of the support sheet in the first embodiment of the support member in the utility model. DETAILED DESCRIPTION

[0031] In order to better understand the purpose, structure and function of the present invention, the fully degradable shoe support and the fully degradable shoe provided by the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] like Figure 1 and Figure 2 As shown, the support member includes a first support structure 1 and a second support structure 2 arranged up and down. The first support structure 1 is a U-shaped ring with an opening facing the toe direction, which is arranged around the heel upper of the shoe. It provides lateral and forward support on the left and right sides and rear sides of the heel to stabilize the heel and reduce the risk of injury caused by lateral or backward deviation and sliding of the human heel in the shoe when starting, stopping or turning during exercise.

[0033] The material hardness of the first support structure 1 is a first hardness. Preferably, the first support structure 1 is a degradable polymer with a first hardness of 80-90A, so as to provide sufficient supporting force and achieve full degradation.

[0034] like Figure 3 and Figure 4 As shown, the second support structure 2 includes a first area 21 and a second area 22 which are arranged sequentially from the toe to the heel, and are arranged corresponding to the midfoot and heel positions of the human body respectively, wherein the end of the first area 21 away from the heel corresponds to the rear end of the metatarsophalangeal joint area, so that the second support structure 2 provides support for the arch and heel without affecting the flexion of the forefoot joint; the end of the second area 22 away from the toe extends upward and is connected to the middle part of the first support structure 1, thereby the second support structure 2 forms an upward and lateral support for the first support structure 1, enhances the supporting force of the first support structure 1 in the vertical direction, and reduces the lateral shear stress on the first support structure 1, so that its stabilizing effect on the heel is stronger.

[0035] The second support structure 2 is only provided with a first area 21 and a second area 22 corresponding to the midfoot and the heel respectively, and the first support structure 1 and the second support structure 2 are connected only in the extended area of ​​the second area 22. By reducing the connection area, the volume of the support component is reduced while ensuring the support force of the sole, so that the total amount of material required to be degraded is reduced.

[0036] The material hardness of the second support structure 2 is the second hardness. Preferably, the second support structure 2 is a degradable polymer with a second hardness of 80-98A, so as to provide sufficient support force and achieve full degradation.

[0037] Specifically, the first area 21 of the second supporting structure 2 is arranged to penetrate in the lateral direction of the sole, including a first surface 211 of the upper layer and a second surface 212 of the lower layer. Since the first surface 211 is suspended at both ends of the lateral direction of the sole, the first surface 211 produces elastic deformation when the first area 21 is subjected to downward pressure from the arch of the foot, which not only provides support but also prevents the soft tissues such as nerves and blood vessels of the sole from being subjected to strong impact and compression to cause discomfort. At the same time, the penetrating structure also increases the surface area of ​​the support component, reduces the mass of the support component, and reduces the total amount of material required for degradation.

[0038] Further, such as Figure 5 As shown, a groove is provided on the second surface 212 of the first area 21, and a support sheet 213 is provided in the groove. The material strength of the support sheet 213 is the third strength, which is greater than the second strength. The support sheet 213 is preferably a degradable polymer with a hardness of 60-80D to enhance the support and anti-torsion effect of the plantar arch area, while achieving full degradation.

[0039] The second area 22 of the second supporting structure 2 is arranged to penetrate in the longitudinal direction of the sole, thereby forming a closed ring structure at the heel stress position. When the heel is subjected to stress, the force can pass through the center of the ring structure and directly act on the lower outsole, thereby avoiding the hard material of the supporting component affecting the landing feel. At the same time, the penetrating structure also increases the surface area of ​​the supporting component, reduces the mass of the supporting component, and reduces the total amount of material required to be degraded.

[0040] Furthermore, the ring wall of the annular structure extends upward to form a semi-enclosed support on the outer side of the midsole corresponding to the heel area, thereby preventing the soft midsole from being lateral deformed when subjected to lateral force, thereby reducing the risk of sprained ankle injury.

[0041] Preferably, the above structure adopts an integrated molding structure to improve the continuity of supporting force transmission and enhance stability, thereby improving supporting force and safety.

[0042] The materials for making the first support structure 1 and the second support structure 2 are at least one of PLA, PBAT, and PBS, or a mixture of two or more of them, so that the support member is degradable and meets the requirements of industrial composting. The hardness of the degradable support member can be adjusted by adjusting the proportion of the above material components according to the functional requirements of the shoe, wherein the first hardness of the first support structure 1 is not greater than the second hardness of the second support structure 2, and the third hardness of the support sheet 213 embedded in the groove of the second support structure 2 is greater than the second hardness of the second support structure 2.

[0043] Preferably, the material of the support sheet 213 is blended with plant fibers to increase the third hardness and the strength of the support sheet 213. The plant fibers may be bamboo, wood, hemp, or other materials, thereby increasing the torsion resistance and supporting function of the support.

[0044] Furthermore, when the plant fiber and the degradable resin are blended in the support sheet 213, a coupling agent is added, including but not limited to KH-550, KH-560, KH-570, and titanate, wherein the weight of the coupling agent is 0.1% to 3% of the weight of the plant fiber. The coupling agent increases the bonding strength between the plant fiber and the degradable resin, thereby increasing the hardness of the support member and enhancing the supporting force of the second support structure 2 on the arch of the human foot.

[0045] A matte layer is provided on the inner and outer surfaces of the support to increase the surface roughness of the support, which can increase the surface area of ​​the support for microorganisms to adhere to during industrial composting, thereby improving the degradation efficiency of the material.

[0046] In order to further understand the purpose, structure and function of the present invention, the fully degradable shoe support provided by the present invention is further described in detail below in conjunction with the embodiments.

[0047] In the first embodiment, the support member includes a first support structure 1 and a second support structure 2 arranged vertically. The first support structure 1 is a U-shaped structure with its opening facing the toe direction, and is semicircularly arranged around the heel upper to prevent the heel from deviating and sliding in the shoe.

[0048] The material of the first support structure 1 is made of PLA, PBAT, and PBS mixed in the ratio of 8:50:42, with a first hardness of 80-90A and a density of 1.27g / cm 3 , elongation greater than 700%, flexural strength 13MPa, flexural modulus 270MPa.

[0049] The second support structure 2 includes a first area 21 and a second area 22 which are arranged sequentially from the toe to the heel, and correspond to the midfoot and heel positions of the human body respectively. The first area 21 is arranged to penetrate the sole in the transverse direction, and the second area 22 is arranged to penetrate the sole in the longitudinal direction to form an annular structure. The first area 21 provides support for the arch position, and the force can pass through the center of the annular structure of the second area 22 and directly act on the outsole of the lower layer, thereby stabilizing the plantar cushioning and anti-torsion function and reducing the risk of foot sprain.

[0050] The material of the second support structure 2 is made of PLA, PBAT, and PBS mixed in a ratio of 10:40:40, with a second hardness of 90-95A and a density of 1.3g / cm 3 , elongation 85%, flexural strength 35MPa, flexural modulus 1800MPa.

[0051] The first area 21 includes a first surface 211 of an upper layer and a second surface 212 of a lower layer. A groove is arranged on the second surface 212, and a support sheet 213 is arranged in the groove. The support sheet 213 is in the shape of a flat plate, and its material strength is greater than the material strength of the second support structure 2, so as to enhance the support and anti-torsion effect of the plantar arch area.

[0052] The material of the support sheet 213 is PLA, PBAT, PBS, bamboo fiber, and KH560 mixed in the ratio of 10:30:38:12:0.12, with a third hardness of 68-72D and a density of 1.4g / cm 3 , elongation 30%, flexural strength 45MPa, flexural modulus 3500MPa.

[0053] The structure of the second embodiment is the same as that of the first embodiment, and the difference lies in the materials and the proportions contained.

[0054] Specifically, the material of the first support structure 1 is made of PLA, PBAT, and PBS mixed in a ratio of 8:50:42, with a first hardness of 80-90A and a density of 1.27g / cm 3 , elongation greater than 700%, flexural strength 13MPa, flexural modulus 270MPa.

[0055] The material of the second support structure 2 is PLA, PBAT, and PBS mixed in a ratio of 10:40:40, with a second hardness of 90-95A and a density of 1.32g / cm 3 , elongation 85%, flexural strength 35MPa, flexural modulus 1800MPa.

[0056] The material of the support sheet 213 is PLA, PBAT, and PBS mixed in a ratio of 20:35:30, with a third hardness of 58-65D and a density of 1.26 g / cm 3 , elongation 20%, flexural strength 40MPa, flexural modulus 2800MPa.

[0057] The utility model also discloses a pair of shoes, which comprises the supporting member mentioned above.

[0058] In order to verify the performance of the support member and the shoe in the utility model, a sample shoe was tested.

[0059] Experimental purpose: to test the support, shock absorption and resilience performance of the sample shoe of Example 1 of the utility model.

[0060] Experimental method: The test data was tested according to the American Society for Testing and Materials (ASTM) running shoe stability comparison test standard (ASTM F1833-2011 Standard Test Method for Comparison of Rearfoot Motion Control Properties of Running Shoes). Eight male healthy runners with a foot size of US9 were recruited to run on a treadmill at a speed of 3.3m / s wearing running shoes. After running steadily for 1 minute, 10 consecutive steps of right lower limb kinematic data were collected. At the same time, according to the test method in the People's Republic of China footwear shock absorption performance test standard (GBT30907-2014 rubber shoes and sports shoes shock absorption performance test method), the shock absorption support and rebound performance of running shoes were tested.

[0061] Through mechanical testing and biomechanical testing, the performance of the shoe in the utility model is statistically as follows:

[0062] Table 1 Mechanical impact and biomechanical test results

[0063] Experimental Project Numeric unit Anti-torsion (valgus torque 30°) 1 5.62 Nm Anti-torsion (valgus torque 30°) 2 4.07 Nm Impact deformation 16.91 mm Energy Return 62.17 ％ Heel cushioning 7.99 g

[0064] The above biomechanical test results show that Example 1 of the utility model can effectively reduce the pressure of eversion and torsion, the heel has good shock absorption and rebound, indicating that the sole will not sink excessively when touching the ground, and the arch rebound is good, indicating that the pedaling efficiency is increased, and sufficient support can be provided to achieve stable support shock absorption and rebound function.

[0065] The fully degradable shoe support and shoe of the utility model can provide good support and shock-absorbing performance and rebound performance while assisting the fully degradable shoe to be degradable. It not only effectively reduces the impact force at the moment of contact with the ground and reduces the risk of injury caused by excessive impact, but also can provide energy feedback support in time to help improve sports performance.

[0066] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be understood as limiting the essence and scope of the utility model. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the utility model. The various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of the embodiments of the utility model will not be described separately.

[0067] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

Claims

1. A fully degradable shoe support, characterized in that: The first support structure and the second support structure are completely degradable. The first support structure is arranged corresponding to the heel upper of the shoe. The second support structure includes a first area and a second area, which are arranged corresponding to the midfoot and heel positions of the human body respectively. The first area is arranged to penetrate in the transverse direction of the sole to form a cavity with two ends connected. The second area is arranged to penetrate in the longitudinal direction of the sole to form a longitudinal hole to increase the surface area of ​​the support and reduce the total amount of material of the support.

2. The fully degradable shoe support member according to claim 1, characterized in that: The second region of the second support structure extends upward from one end away from the toe and is connected to the first support structure to enhance the supporting force of the first support structure in the vertical direction while reducing the connection area.

3. The fully degradable shoe support member according to claim 1, characterized in that: The first area of ​​the second supporting structure includes a first surface and a second surface. The first surface is suspended at both ends in the transverse direction of the sole to enhance elastic deformation of the first surface.

4. The fully degradable shoe support member according to claim 3, characterized in that: A groove is arranged on the second surface of the first region, and a supporting sheet is arranged in the groove to enhance the rigidity of the first region.

5. The fully degradable shoe support member according to claim 1, characterized in that: The second area of ​​the second support structure includes an annular structure, the annular wall of which extends upward to support the lateral side of the midsole at the heel portion.

6. The fully degradable shoe support member according to any one of claims 1 to 5, characterized in that: The first support structure is a degradable polymer with a material hardness of 80-90A, and the second support structure is a degradable polymer with a material hardness of 80-98A.

7. The fully degradable shoe support member according to claim 4, characterized in that: The material strength of the support sheet is greater than the material hardness of the second support structure. The support sheet is a degradable polymer with a material hardness of 60-80D and can be completely degraded.

8. The fully degradable shoe support member according to any one of claims 1 to 5, characterized in that: The first supporting structure and the second supporting structure are integrally formed.

9. The fully degradable shoe support member according to any one of claims 1 to 5, characterized in that: The support also includes a matte layer to increase the surface roughness of the support.

10. A fully degradable shoe, characterized in that: The invention comprises the fully degradable shoe support member as claimed in any one of claims 1 to 9.

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