CN113876076A - Multilayer self-damage type sole buffering protection structure - Google Patents
Multilayer self-damage type sole buffering protection structure Download PDFInfo
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- CN113876076A CN113876076A CN202111213577.7A CN202111213577A CN113876076A CN 113876076 A CN113876076 A CN 113876076A CN 202111213577 A CN202111213577 A CN 202111213577A CN 113876076 A CN113876076 A CN 113876076A
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- layer
- air bag
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- elastic foam
- damping
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
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- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention relates to the technical field of foot protection for flight extreme sports, in particular to a multilayer self-damage sole buffer protection structure, which comprises a protection structure body consisting of a plurality of layers of elastic foam plates and a damping air bag layer between each layer of elastic foam plates, wherein the damping air bag layer internally comprises a plurality of independent air bags, the air pressure values in the air bags in each layer of damping air bag layer are the same, and the independent air bags break when the pressure reaches a preset value; from the bottom to the top, the size of the independent air bag is gradually reduced; also has a fixing structure for fixing the protective structure to the foot, and a shrink-wrap for maintaining the shape; when the protective structure is used, the protective structure is integrally worn outside the military boots, the air bag is broken by impact during landing, the elastic foam plate is broken, impact energy is absorbed, instantaneous impact force is reduced, and ankle parts of a user are protected.
Description
Technical Field
The invention relates to the technical field of foot protection during landing in extreme sports or parachuting, in particular to a multi-layer self-damage sole buffer protection structure.
Background
When an paratrooper parachutes and lands, the whole body is subjected to a large impact, and although various landing postures are studied in the industry, sports injuries such as soft tissue tearing and fracture often occur. Athletic impairment studies have found that foot injuries are the largest in proportion. Epidemiological investigations also found that among parachuting landing limb injuries, foot injuries accounted for 63.6% of all injuries. Meanwhile, the foot bears large impact force, calcaneus and anklebone fracture happens occasionally, and great threat is brought to fighting capacity and personal safety, so that reasonable and effective protection design is of great importance to preventing foot damage during landing.
At present, foot protection aiming at landing is mainly achieved by wearing different ankle protection structures, such as elastic bandages, ankle protection socks, semi-rigid ankle protection and the like and different military boot structures, when in use, an paratrooper wears the ankle protection socks or winds the bandages on the foot, then the whole foot is threaded into the military boot, and finally a rigid or semi-rigid boot outer protector is worn on the outer side of the military boot. The whole process is complicated and time-consuming, but ankle injuries during landing cannot be completely avoided. The current protective structure has the problems of complex structure, inconvenient wearing and limited protective effect, and the ankle part is damaged sometimes even if the protective tool is correctly used for protection.
Therefore, the invention provides a multi-layer self-damage sole buffering protection structure, which improves the protection effect, is simple to use, easy to wear and high in reliability.
Disclosure of Invention
The invention aims to provide a multi-layer self-damage type sole buffering and protecting structure to solve the problems in the background technology.
The technical scheme of the invention is as follows: a multi-layer self-destructive sole cushioning and protective structure, comprising:
the protective structure body consists of a plurality of layers of elastic foam plates and a damping air bag layer in the middle of each layer of the elastic foam plates, each layer of the damping air bag layer consists of a plurality of independent air bags, air bags in each layer of the damping air bag layer are pre-filled with gas and have the same air pressure value, and the independent air bags are ruptured and self-damaged when the pressure reaches a preset value;
the fixing structure is used for fixing the multilayer self-damage sole buffering and protecting structure body on the foot;
and the contraction edge is used for wrapping the side edge of the protective structure body.
The damping air bag layer is provided with three layers, the lower damping air bag layer consists of independent air bags similar to a cuboid, a recess is formed in the middle of the lower damping air bag layer, and a gap is formed between the recessed area and the elastic foam plates on the upper layer and the lower layer; the sizes of the independent air bags in the middle damping air bag layer are smaller than those of the lower air bag layer, at least one independent air bag with the same shape as that of the lower air bag layer is included, and the rest independent air bags are spherical; the size of the air bag of the upper damping air bag layer is smaller than that of other air bags, and all the air bags are spherical.
The critical pressure of the lower shock absorption air bag layer for air bag rupture is 0.3 MPa; the critical pressure of the airbag rupture of the middle damping airbag layer is 0.2 MPa; the critical pressure of the upper shock absorption air bag layer for air bag rupture is 0.1 MPa.
In the plurality of layers of elastic foam boards, the density of the elastic foam board at the bottommost layer is higher than that of other elastic foam boards.
The density of the elastic foam board material at the bottommost layer is 0.4g/cm3(ii) a The density of other elastic foam boards is 0.1-0.4 g/cm3In the meantime.
The shrink-wrap is made of a breathable, deformable material.
During the use, with the multilayer the whole army boots or protective equipment outside of wearing of self-destruction formula sole buffering protective structure, when landing, the independent gasbag in the shock attenuation gasbag layer breaks and self-destroys, the multilayer the elasticity cystosepiment fracture, buffering landing impact.
Compared with the prior art, the invention has the following improvements and advantages:
one is as follows: the air bag of the structure is broken and self-damaged and the elastic foam plate is damaged, so that impact energy is absorbed, the unloading time of impact force is prolonged, and the local stress of feet during landing is reduced;
the second step is as follows: the damping air bag layer and the elastic foam plate are reasonable in parameter setting, main energy absorption is realized in a self-damage mode of the air bag after being pressed to break, reliability is improved in principle, the problem that a complex structure cannot normally play a role due to the fact that a certain part of the complex structure is started to fail is avoided, and meanwhile, production and processing difficulty can be reduced;
and thirdly: by setting proper critical impact force, the protective structure can be ensured to play a role when the impact exceeds a preset value, and the structure is prevented from self-destruction and failure in advance due to false triggering;
fourthly, the method comprises the following steps: the lower layer adopts a cuboid-like air bag with a concave middle part and larger size, so that the protection structure has a good supporting function, and meanwhile, the clearance between the protection structure and the foam plate is favorable for smooth fracture and self-damage, and the unloading stroke of impact can be increased;
and fifthly: the invention is a protective device which is additionally worn on the basis of army boots and ankle guard structures worn by athletes at the flight limit, and the protective device is very simple and convenient to wear and detach and cannot cause additional burden.
Drawings
The invention is further explained below with reference to the figures and examples:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
fig. 3 is a cross-sectional view at B-B in fig. 1.
Description of reference numerals:
1. a shock absorbing air bag layer; 2. middle and rear foot sticking belts; 3. front foot adhesive tape; 4. a protective structure body; 5. shrinking edges; 6. a resilient foam sheet.
Detailed Description
The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Firstly, it needs to be explained that aiming at the parachute jumping landing mode, different postures are adopted in the industry, the mechanical characteristics of the common domestic mode of 'parallel landing on feet' are mainly researched, and an effective additional protective structure is provided aiming at the parachute jumping landing mode through experimental test and evaluation.
Through developing corresponding mechanics test experiments, the impact force of feet of paratroopers during landing is tested. Through landing impact tests at different heights of 52cm, 82cm and 152cm from the ground, the counter impact force of the ground to the soles is gradually increased along with the increase of the land height, as shown in figure 1. Through further mechanics simulation research, the result shows that the concentrated positions with larger stress are the distal ends of fibulas and the proximal ends of calcaneofibular ligaments, that is, under the condition of larger impact force, the distal ends of the fibulas are easy to fracture or the calcaneofibular ligaments are easy to tear, and once injury occurs, great potential safety hazards are generated for continuous combat after the paratroopers land. By analyzing the foot stress condition in the parachute jumping landing process, the problem that the existing protective tool cannot solve the problem of overlarge instantaneous local stress caused by large impact can be seen, and the protective structure designed by the invention aims to relieve the overlarge local stress of the foot during landing impact.
The invention provides a multilayer self-damage buffer protection structure, which comprises:
the protective structure body 4 comprises a plurality of layers of elastic foam plates 6 and a damping air bag layer 1 between each layer of elastic foam plates 6, wherein the damping air bag layer 1 comprises a plurality of independent air bags, the independent air bags in each layer of damping air bag layer 1 are pre-filled with air and have the same air pressure value, and each air bag breaks and is self-damaged when the pressure reaches a preset value; the size of the air bag gradually decreases from the bottom to the top in the vertical direction.
The forefoot adhesive tape 3 and the middle hindfoot adhesive tape 2 are used as fixing parts of the protective structure and are used for fixing the protective structure body 4 on the feet; the mode such as magic subsides, buckle area, elastic webbing of specific optional satisfies can with the stable sole of being fixed in of protective structure.
And the contraction edge 5 is used for wrapping the periphery of the side edge of the protective structure body 4.
Preferably, the damping air bag layer is provided with three layers, the lower damping air bag layer consists of independent air bags similar to a cuboid, a recess is formed in the middle of the lower damping air bag layer, and a gap is formed between the recessed area and the elastic foam plates on the upper layer and the lower layer; the sizes of the independent air bags in the middle damping air bag layer are smaller than those of the lower air bag layer, at least one independent air bag with the same shape as that of the lower air bag layer is included, and the rest independent air bags are spherical; the size of the air bag of the upper damping air bag layer is smaller than that of other air bags, and all the air bags are spherical.
A bottom layer shock absorbing bladder layer having a largest sized bladder, wherein the bladder rupture critical pressure is 0.3 MPa; a middle shock-absorbing air bag layer with medium size and small size, wherein the critical pressure of air bag rupture is 0.2 MPa; the size of the air bag in the upper shock absorption air bag layer is smaller than that of other air bags, and the rupture critical pressure of the air bag is 0.1 MPa. In order to realize reliable rupture critical pressure intensity, the size of the air bag, the adopted material, the pre-charged air pressure value and the like can be comprehensively adjusted and selected to be proper parameters; for the multi-layer resilient foam sheet 6, the lowest layer, which is the ground-contacting layer, is a low foam sheet, preferably having a material density of 0.4g/cm3(ii) a The elastic foam board of other layers is a medium foam board with the density of 0.1-0.4 g/cm3In the meantime.
The critical impact force of the protective structure in the invention is 5000N, namely when the landing impact force is more than 5000N, the air bag and the elastic foam plate can be damaged by self, and the protective structure plays a role. The ankle can be protected when receiving the impact of certain degree to suitable critical impact force can guarantee protective structure, and when not reaching critical impact force, protective structure is out of work, prevents the false triggering, leads to the structure self-destruction in advance to lead to the protection inefficacy. A normal person with 70KG stands with the forefoot kept standing upright, and with a small contact area, the force on the sole is between 3500N and 4000N. When the walking is carried out with normal gait, the acting force on the sole is far less than 5000N, namely the walking is carried out with the protective structure after wearing the protective structure, and the starting of the protective operation can not be triggered. On the other hand, the experimental test result shows that the normal person with the weight of about 70kg jumps down from different heights (52cm, 82cm and 152cm) and lands on the pressure plate, the measured peak impact forces are 7100N, 10000N and 14960N respectively, and as the height is increased, the impact force is increased, and the impact force when the paratroopers land is far greater than the test value, 5000N can ensure that the protective structure plays a role when the paratroopers land; therefore, the invention selects and sets the working critical impact force to be 5000N according to the comprehensive consideration of various conditions possible in practical use.
When the parachuting lands, the local stress in ankle area under the instantaneous impact can effectively be reduced to the structure of above-mentioned shock attenuation gasbag layer and cystosepiment, and the concrete principle is: the independent air bags in each layer are provided with different rupture critical pressures, so that when the protective structure is subjected to critical impact force, each damping air bag layer can reach respective critical rupture pressure, each independent air bag is ruptured and deflated, the shrinkage edge 5 is shrunk and deformed through folds of the independent air bags, and each layer of foam board is broken and fractured. Under the actual condition, due to the self-damage of the lower layer air bag, the unloading can be caused to the actual impact on the upper layer air bag, the lower critical rupture pressure intensity is set on the upper layer air bag, the smooth rupture and self-damage of each layer of air bag is facilitated, and the function can be played under the extreme condition. In addition, if the bottom layer elastic foam plate is broken before other structures are damaged during landing, the shock absorption air bag layer next to the bottom layer elastic foam plate is directly contacted with the ground, and the situation that all parts of the shock absorption air bag layer are stressed unevenly is easily caused at the moment, so that the feet of users are unstable to form injuries; the bottom layer elastic foam board is a foam board with higher density, so that the phenomenon is effectively avoided, the self-damage process of the structure is stable and controllable, and meanwhile, the protective structure is protected from being damaged in advance due to treading or uneven ground when the umbrella is prepared before jumping; on the other hand, the peak value of the pressure of the sole of the human body is between 0.23MPa and 0.27MPa, and the bottom air damping air bag layer and the bottom elastic foam plate are used as an integral supporting layer, so that the arrangement can provide effective support. In the design of the shape of the air bag, the lower layer adopts the air bag which is concave in the middle and is similar to a cuboid with larger size, so that the protective structure has a good supporting function, the gap between the concave area and the foam plate is beneficial to smooth rupture of the air bag and overflow of self-damaged gas, the unloading stroke of impact can be increased, and the impact action time is prolonged; the middle layer air bag comprises at least one cuboid air bag with a sunken middle part, and the integral supporting function is further enhanced.
Through the self-damage of the air bag and the fracture of the plurality of foam plates, the impact energy is absorbed to the maximum extent, and the impact process is prolonged. In the test experiment through landing and high jump, each layer of air bag in the experimental protection structure realizes rupture and self-damage and each layer of foam board breaks, the damage process does not influence the landing stability of testers, and the parameter design is proved to be reasonable. In addition, the energy is absorbed by a fracture self-damage mode to unload the impact, the reliability is high in principle, the parameters needing to be controlled in production and processing are fewer, the design requirements are easy to achieve, the expected effect can be obtained only by controlling the parameters of the air bag, such as the material, the shape and the size, and the like, and the production difficulty is obviously reduced.
The contraction edge 5 is made of deformable materials, for example, soft materials such as fabric, fiber or leather can be adopted, and the air bag can ventilate, so that the air bag can be smoothly broken and deflated, and the deformation of a fold structure is conformed; fixedly connected with the lower surface of the bottom layer elastic foam board and the upper surface of the uppermost layer elastic foam board to maintain the integral shape. When the protective structure in the invention is impacted to play a role, the contraction edge is made of soft deformable materials and can change along with the change of the structure.
The multilayer self-damage type sole buffering protection structure is matched with an existing military boot and ankle guard structure when in use, the military boot and the ankle guard still need to be worn correctly as a primary protection structure of an umbrella soldier, the multilayer self-damage type sole buffering protection structure is additionally provided with the protection structure, the addition process is very simple, the protection structure is integrally worn outside the military boot before parachuting, and the buffering structure is fixed at the bottom of the military boot through the middle-rear foot adhesive tape 2 and the front foot adhesive tape 3, so that the installation is very simple. After landing, the detachable landing platform can be detached quickly, so that extra use burden is not caused to a user, and rapid combat after landing is not influenced.
Preferably, the protective structure body 4 is shaped like an approximate ellipse, as shown in fig. 2, the specific size is adjusted according to the size of the shoe worn by the user, and the thickness is about 30 cm. The width, namely the dimension in the A-A direction is about 2 times of the width of the military boot, and the length, namely the dimension in the B-B direction is 1.5 times of the length of the military boot. For example, the length of a shoe with a shoe size of 42 is 26-28 cm, the length of the matched multi-layer buffer structure is 39-42cm, and the protective structure can be produced in batch because the size of the protective structure is set according to the size of the shoe and the shoe size has a universal standard. Although the protective structure of the invention can be used only once, the protective structure is simple in structure, low in cost, disposable, and suitable for large-scale popularization and application, and does not bring extra load to users.
The utility model provides a multilayer self-destruction formula sole buffering protective structure, the gasbag through this structure breaks and the destruction of elasticity foam board structure, absorbs impact energy, and the uninstallation time of extension impact force alleviates the impact force and harms the direct impact of foot, and foot health safety when further strengthening the protection paratrooper landing is convenient wear to take off and is favorable to carrying out on next step the operation fast.
The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a multilayer self-destruction formula sole buffering protective structure which characterized in that includes:
the protective structure body (4) is composed of a plurality of layers of elastic foam plates (6) and a shock absorption air bag layer (1) in the middle of each layer of the elastic foam plates (6), each layer of the shock absorption air bag layer (1) is composed of a plurality of independent air bags, air bags in each layer of the shock absorption air bag layer (1) are pre-filled with air and have the same air pressure value, and the independent air bags break and are self-damaged when the pressure reaches a preset value;
the fixing structure is used for fixing the multilayer self-damage sole buffering and protecting structure body (4) on the foot;
and the contraction edge (5) is used for wrapping the side edge of the protective structure body (4).
2. The multi-layer self-destructive sole cushioning and protection structure according to claim 1, wherein: the damping air bag layer is provided with three layers, the lower damping air bag layer consists of independent air bags similar to a cuboid, a recess is formed in the middle of the lower damping air bag layer, and a gap is formed between the recessed area and the elastic foam plates (6) on the upper layer and the lower layer; the sizes of the independent air bags in the middle damping air bag layer are smaller than those of the lower air bag layer, at least one independent air bag with the same shape as that of the lower air bag layer is included, and the rest independent air bags are spherical; the size of the air bag of the upper damping air bag layer is smaller than that of other air bags, and all the air bags are spherical.
3. The multi-layer self-destructive sole cushioning and protection structure according to claim 2, wherein: the critical pressure of the lower shock absorption air bag layer for air bag rupture is 0.3 MPa; the critical pressure of the airbag rupture of the middle damping airbag layer is 0.2 MPa; the critical pressure of the upper shock absorption air bag layer for air bag rupture is 0.1 MPa.
4. The multi-layer self-destructive sole cushioning and protection structure according to claim 3, wherein: in the multiple layers of the elastic foam boards (6), the density of the elastic foam board at the bottommost layer is higher than that of the other elastic foam boards.
5. The multi-layer self-destructing cushioning and protective structure for soles according to claim 4, wherein said structure is formed by a plurality of layersThe method comprises the following steps: the density of the elastic foam board material at the bottommost layer is 0.4g/cm3(ii) a The density of other elastic foam boards is 0.1-0.4 g/cm3In the meantime.
6. The multi-layer self-destructive sole cushioning and protection structure according to claim 5, wherein: the shrink band (5) is made of a breathable, deformable material.
7. The multi-layer self-destructive sole cushioning and protection structure according to claim 6, wherein: during the use, with the multilayer the whole army boots or the protective equipment outside of wearing of self-damage formula sole buffering protective structure, when landing, the independent gasbag in the shock attenuation gasbag layer breaks and self-damages, the multilayer elasticity cystosepiment (6) fracture, buffering landing impact.
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| CN202111213577.7A CN113876076B (en) | 2021-10-19 | 2021-10-19 | Multilayer self-damage type sole buffering protection structure |
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| CN202111213577.7A CN113876076B (en) | 2021-10-19 | 2021-10-19 | Multilayer self-damage type sole buffering protection structure |
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| CN113876076B CN113876076B (en) | 2023-03-14 |
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| JP2018178303A (en) * | 2017-04-11 | 2018-11-15 | 徳晃有限公司 | Pressure-adjustable bag body device |
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| US20200221816A1 (en) * | 2019-01-10 | 2020-07-16 | Tate Technology, Llc | Tactical impact mitigation footwear cover |
| CN112515290A (en) * | 2020-12-02 | 2021-03-19 | 福鼎市尚尚品服饰有限公司 | Shock-absorbing shoe pad and manufacturing method thereof |
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|---|---|---|---|---|
| US5675915A (en) * | 1995-03-21 | 1997-10-14 | The United States Of America As Represented By The Secretary Of The Army | Impact absorbing soles for parachutists |
| CN2357543Y (en) * | 1998-12-29 | 2000-01-12 | 河南大学激光电子技术研究所 | Paratroops' shoe-pad with automatic inflatable bag |
| US20050150133A1 (en) * | 2004-01-13 | 2005-07-14 | M. Steven Khoury | Orthopedic device for distributing pressure |
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| CN113876076B (en) | 2023-03-14 |
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