A type of special work protective shoe

Abstract

This invention relates to the field of footwear technology, specifically to a special work protective shoe, comprising an upper and a sole. A cushioning component is fixedly installed on the upper surface of the sole, and an elastic element is fixedly installed inside the cushioning component. The bottom of the upper has an upwardly recessed movable cavity, the sidewall of which is located inside the fixed connection of the elastic element. A limiting wall is fixedly installed on the sole, and the cushioning component and the elastic element are both inside the limiting wall. This design allows the user to wear the protective shoe as a normal shoe in non-working environments. When used in a working environment, the elastic element inside the shoe can absorb pressure from heavy objects, and multiple mechanisms can work together to quickly remove the user's foot during the moment of pressure, thereby protecting the foot.

Description

Technical Field

[0001] This invention relates to the field of footwear technology, and more specifically to a special-operation protective shoe. Background Technology

[0002] Specialized work protective shoes are footwear designed to protect the feet. They come in various types, including those that protect toes, prevent punctures, provide insulation, and are resistant to acids and alkalis. When selecting specialized work protective shoes, the nature and severity of the hazardous conditions in the work environment must be considered. These shoes must have a product quality certificate and instructions for use. Before use, the instructions must be read carefully according to the usage conditions, and the shoes must be used correctly. After use, the shoes should be carefully inspected and stored in a clean, dry place.

[0003] With the increasing awareness of safety protection, many manufacturers have produced various types of protective safety shoes. For example, Shanghai Baiji Shoes Co., Ltd. invented a protective safety shoe (application number: CN202110865633.9, announcement date: 2023-02-21). This protective safety shoe includes a sole, an anti-impact upper, and an instep anti-impact layer. The anti-impact upper is set on the sole. The instep anti-impact layer covers the outside of the anti-impact upper. The edge of the instep anti-impact layer is provided with a fixed edge and a movable edge. The fixed edge is fixedly connected to the anti-impact upper, and the movable edge can be opened and closed on the anti-impact upper. The instep anti-impact layer is set with a layered structure, and a protective layer is set inside the instep anti-impact layer. This invention achieves significant overall protection through the cooperation of the layered anti-impact upper and the instep anti-impact layer. The fixed edge and movable edge of the instep anti-impact layer ensure a firm connection between the instep anti-impact layer and the anti-impact upper, and also make the protective safety shoe easy to wear and operate.

[0004] Existing special operation protective shoes all have impact-resistant materials in the toe box to protect the user's feet. However, most of the time, users of special operation protective shoes work in dangerous areas, especially those with impact-resistant types. Users often carry heavy objects or work in workshops where heavy objects may fall. When a heavy object falls on the shoe, although the impact-resistant material can protect the toes, the heavy object pressing on the shoe can cause the user's foot to be unable to escape. That is, the user's foot cannot get out of the shoe. The heavy object pressing on the foot for a long time can cause ischemia in the foot, which can lead to severe local hypoxia, gangrene, and in severe cases, even ischemic necrosis.

[0005] Existing special-operation protective shoes typically weigh around 2kg. In logistics warehouse handling, due to the dense warehouse space and short distances between shelves, workers expend a great deal of energy on handling, especially during long periods. The excessive weight of the protective shoes significantly depletes workers' physical strength, thus affecting work efficiency. Furthermore, some heavy objects are quite large; for example, when moving large equipment or goods, the height of manually moved items is generally around 2 meters or even higher. These large items usually require several people to work together. During the handling process, the large items can obstruct the users' view, making it easier for workers to collide with each other because they cannot see each other.

[0006] Therefore, the present invention provides a special protective shoe for special operations, which can improve the above-mentioned problems. Summary of the Invention

[0007] The technical problem to be solved by the present invention is that existing special operation protective shoes cannot pull the user's feet out in time, thus causing varying degrees of damage to the feet. In addition, existing special operation protective shoes are heavy, which makes it more difficult to move when carrying heavy objects.

[0008] This invention provides the following technical solution: a special work protective shoe, comprising an upper shoe body and a sole. The upper surface of the sole has a cushioning component for shock absorption, and the cushioning component contains an elastic element for force dissipation. The bottom of the upper shoe body has an upwardly recessed movable cavity, the sidewall of which is located inside the fixed joint of the elastic component. A limiting wall is fixedly installed on the sole, and both the cushioning component and the elastic component are inside the limiting wall. The cushioning component is preferably an air bladder, which not only provides cushioning for the user but also increases the user's comfort. The air bladder is made of polyamide fabric with good tear resistance, filled with air, and can support a user weighing up to 200kg. The elastic element is preferably a wave spring. Wave springs have a compact structure and advantages such as high strength, good flexibility, and strong impact resistance. They are suitable for small spaces between the sole and the upper shoe body, and the support points on the upper and lower surfaces of the wave spring are evenly distributed, improving the overall stability of the shoe.

[0009] The airbag is a segmented airbag, and each segment is interconnected. The segmented design provides a relatively flat foot surface for the user. A one-piece airbag would cause a significant indentation at the point of contact between the user's foot and the airbag, which would affect the user's foot pressure. The segmented airbag effectively avoids this problem, as it produces less indentation than a one-piece airbag, thus providing greater stability.

[0010] It also adopts a segmented airbag design. When the user is using it in the work environment, the airbag is in a state of contraction and fits the spring. When the toe part is subjected to pressure from a falling heavy object, the air in the toe part airbag will be squeezed into the airbag in the middle of the shoe and even the heel part. At this time, the airbag will form a certain slope, and then work with the tongue and insole to help to quickly pull the user's foot out.

[0011] The airbag features a design that is thinner at the toe and thicker at the heel. This design allows the airbag to better conform to the structure of the foot, thus improving user comfort. The 1cm thickness at the toe prevents the airbag from expanding outwards and damaging itself under pressure. The moderate height of the forefoot airbag ensures that under instantaneous pressure, the gas flows backward, raising the heel airbag and making it easier for the user to remove their foot from the shoe. The 3cm thickness at the heel airbag facilitates gas flow from the forefoot airbag to the heel, raising it for easier foot removal, and also improves user comfort as the heel typically experiences greater stress during movement.

[0012] The bottom of the airbag is hardened by adding benzoic acid, with a specific gravity of about 1.27 and a melting point of not less than 120°C. At high temperatures, this can significantly increase the vulcanization critical temperature of the vulcanization accelerator and increase the scorch resistance of the rubber compound. The burning process is stopped when the hardness of the bottom of the airbag reaches 60-65°A, at which point the rubber hardening is complete.

[0013] The airbag is fixedly equipped with an air nozzle and a speaker at its tail end; the air nozzle is used to control the inflation and deflation of the airbag; when the user uses it in a non-working area, the airbag is fully deployed, that is, the airbag is filled with gas, and the air nozzle is used to prevent gas from overflowing; when the user uses it in a working area, the user opens the air nozzle to start deflation, and when the airbag is in contact with the spring, the user closes the air nozzle to stop deflation.

[0014] A speaker is fixedly installed at the tail end of the airbag. When the user moves, the spring is squeezed, which in turn squeezes the speaker and makes it emit a sound. This serves as a warning to the user whose view is blocked due to carrying heavy objects, thus preventing unnecessary collisions.

[0015] The spring is a wave spring, which has a compact structure and advantages such as high strength, good flexibility, and strong impact resistance. It is suitable for small spaces between the sole and the upper of the shoe. The wave spring also features evenly distributed support points on its upper and lower surfaces, improving the overall stability of the shoe. The wave spring is made of carbon fiber, which is lightweight and has a long service life. Furthermore, the front end of the wave spring has a recessed area for toe contact; this recess allows for better toe contact and thus better force application from the toes.

[0016] A memory foam is fixedly installed above the air vent at the front of the shoe cavity. The side of the memory foam facing the end of the shoe cavity has a corrugated shape that conforms to the toes. The memory foam itself has a certain degree of breathability, which allows air to flow through the air vents in the shoe cavity and movement chamber without obstructing the flow of air. It also restricts the toes to prevent them from blocking the air vents. The memory foam is soft and elastic, protecting the toes when the shoe is compressed and rebounding to its original shape when the foot leaves the shoe cavity. It also has a certain degree of sweat absorption, reducing the friction between the toes and the front side wall of the shoe cavity during walking. The corrugated surface of the memory foam in contact with the toes allows it to fit the toes more closely, improving the user's comfort.

[0017] A buffer pad is fixedly installed on the top of the limiting wall. The greater the user's weight, the greater the deformation of the spring when walking, and the greater the vertical displacement of the limiting wall within the movable cavity. When the user is too heavy, the limiting wall may collide with the top of the movable cavity when walking, causing discomfort. Therefore, a buffer pad is fixedly installed on the top of the limiting wall. The buffer pad is made of rubber and has a certain degree of elasticity, which can buffer and absorb the impact, reducing the user's discomfort.

[0018] The cushioning pad has a hard rubber bottom and a sponge pad top. The sponge pad top is designed to provide a good foot environment for the user, while the hard rubber bottom allows the cushioning pad to quickly lift up at the heel when the toe is squeezed, thus allowing the user's foot to be quickly removed in conjunction with the thin patch.

[0019] The sole of the shoe features anti-slip treads on its bottom, which are shaped like contour lines resembling mountain peaks. These treads increase the shoe's friction. When a user is exercising at high speed, slipping on the ground increases the risk of ankle sprains. The contour lines are designed to distribute pressure more evenly. The centers of gravity of the two contour lines correspond to the two points of force application on the forefoot and heel. The anti-slip treads disperse the energy from these two points of force application to the area around the center point, thus providing better cushioning for the user.

[0020] The beneficial effects of this invention are as follows:

[0021] When wearing safety shoes in non-working environments, users can wear them as normal shoes. When used in working environments, the springs inside the shoes can relieve pressure when there are heavy objects pressing on them. At the same time, multiple mechanisms work together to allow the user's foot to be quickly pulled away at the moment of pressure.

[0022] 1. This invention incorporates an airbag in the bottom of the shoe. The inflation and deflation of the airbag allows users to easily adapt to different working environments. On one hand, segmenting the airbag prevents significant indentation at the point of contact between the foot and the airbag, improving user comfort. On the other hand, when the user is subjected to pressure from heavy objects, the air in the toe section of the airbag is forced into the airbags in the middle of the shoe and even the heel. At this time, the airbag forms a certain slope, which, in conjunction with the tongue and insole, helps to quickly pull the user's foot out, thereby protecting the user.

[0023] 2. This invention incorporates a spring at the bottom of the airbag. The spring is a wave spring, which improves stability. The spring and airbag work together to relieve force when the user encounters heavy objects. When the user is carrying heavy objects, the spring's elasticity, combined with the airbag, provides cushioning and assistance during movement.

[0024] 3. This invention incorporates a speaker within the airbag. The speaker works in conjunction with the airbag, causing the speaker to vibrate and emit a sound when the user moves. This serves as a warning to the user whose view is obstructed due to carrying heavy objects, thus preventing unnecessary collisions. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is an overall schematic diagram of the present invention;

[0027] Figure 2 This is an overall exploded view of the present invention;

[0028] Figure 3 This is a schematic diagram of the buffer component of the present invention;

[0029] Figure 4 This is a side view of the buffer component of the present invention;

[0030] Figure 5 This is a cross-sectional view of the buffer component of the present invention;

[0031] Figure 6 This is a schematic diagram of the shoe sole of the present invention;

[0032] Figure 7 This is a cross-sectional view of the present invention;

[0033] Figure 8 This is a schematic diagram of the elastic component of the present invention;

[0034] Figure 9 This is a schematic diagram of the cushioning pad of the present invention.

[0035] In the picture: 1. Upper shoe body; 2. Sole; 21. Cushioning component; 211. Air valve; 212. Sound output device; 22. Elastic component; 23. Limiting wall; 24. Anti-slip texture; 3. Memory foam; 4. Cushioning pad. Detailed Implementation

[0036] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0037] First Implementation Method

[0038] like Figures 1 to 9As shown, a special work protective shoe includes an upper shoe body 1 and a sole 2. A cushioning component 21 is fixedly installed on the upper surface of the sole 2. The cushioning component 21 is used to inflate and increase the user's comfort. An elastic component 22 is fixedly installed at the bottom of the cushioning component 21, which also serves to cushion the impact of heavy objects on the user's foot. The bottom of the upper shoe body 1 has an upwardly recessed movable cavity. The side wall of the movable cavity is located inside the fixed joint of the elastic component 22. The movable cavity is used to allow the elastic component 22 to slide and extend. A limiting wall 23 is fixedly installed on the sole 2. The cushioning component 21 and the elastic component 22 are both inside the limiting wall 23. The limiting wall 23 is located in the movable cavity above it, which has the same outline as its outer wall, and they are fitted together and can slide.

[0039] When in use, the user inserts their foot into the shoe through the opening at the rear of the upper shoe body 1. The upper and tongue 12 are used to fix and lock the foot. The sole 2 is sewn together with the upper shoe body 1 with nylon thread, so that a sealed space is formed between the sole 2 and the upper shoe body 1.

[0040] The aforementioned cushioning component 21 can be used when not in use, when the risk to the instep is relatively low. In this case, the cushioning component 21 can be inflated, and the restarted cushioning component 21 is equivalent to a soft air cushion, increasing the user's comfort when not working. When the user is working, especially in a factory environment where danger is everywhere, the cushioning component 21 can be deflated to fit tightly with the elastic component 22. At this time, the elastic component 22 can provide elastic force to the user's foot at any time. In this way, when a heavy object falls and presses on the user's instep, the elastic component 22 can act as a force-absorbing element, which is more convenient and quick.

[0041] like Figures 2 to 7 As shown, the cushioning component 21 is a segmented cushioning component 21, and each segment of the cushioning component 21 is interconnected. Setting the cushioning component 21 as a segmented cushioning component 21 is suitable for providing the user with a relatively flat foot space. If a one-piece cushioning component 21 is used, it will cause a large indentation at the point where the user's foot contacts the cushioning component 21. If a large indentation occurs, it will affect the user's foot force. Using the above-mentioned segmented cushioning component 21 can effectively avoid the above problems. The segmented cushioning component 21 produces a smaller indentation than the one-piece cushioning component 21, and is therefore more stable than the one-piece cushioning component 21.

[0042] Meanwhile, a segmented cushioning component 21 is adopted. When the user uses it in the work environment, the cushioning component 21 is in a state of shrinking and fitting the elastic component 22. When the toe part is subjected to pressure from a heavy object falling, the air in the cushioning component 21 in the toe part will be squeezed into the cushioning component 21 in the shoe and even the heel part. At this time, the cushioning component 21 will form a certain slope, and then work with the insole of the tongue 12 to help to quickly pull the user's foot out.

[0043] like Figures 3 to 4 As shown, the cushioning component 21 adopts a structure that is thinner at the toe and thicker at the heel. This design allows the cushioning component 21 to better conform to the structure of the human foot, thus improving user comfort. The thickness of the cushioning component 21 at the toe is set to 1cm to prevent it from expanding to the sides and causing damage when compressed by heavy objects. Only by designing the front cushioning component 21 to a moderate height can the air inside it flow backward under instantaneous pressure, causing the cushioning component 21 at the heel to rise, making it easier for the user to remove their foot from the shoe. The thickness of the cushioning component 21 at the heel is set to 3cm. This is to facilitate the flow of air from the front cushioning component 21 to the heel, raising the heel and making it easier for the user to remove their foot. Furthermore, since the heel generally experiences greater force during movement, setting the thickness of the cushioning component 21 at the heel to 3cm also improves user comfort.

[0044] As shown in Figure 5, the bottom of the buffer component 21 is hardened. Since the buffer component 21 is fixedly installed above the elastic component 22, the normal buffer component 21 is relatively soft. Therefore, when the buffer component 21 is squeezed, it will deform. As a result, the elastic component 22 located at the bottom of the buffer component 21 will not be subjected to the corresponding force or the force will be insignificant. Therefore, by hardening the bottom of the buffer component 21, the pressure can be transmitted to the top of the elastic component 22 when the buffer component 21 deforms, thereby causing the elastic component 22 to deform. This method can better achieve the buffering effect.

[0045] like Figure 7As shown, the rear end of the buffer assembly 21 is fixedly equipped with an air nozzle 211 and a sound outlet 212; the air nozzle 211 is used to control the inflation and deflation of the buffer assembly 21; when the user uses it in a non-working area, the buffer assembly 21 is in a fully expanded state, that is, the buffer assembly 21 is filled with gas, and the air nozzle 211 is used to prevent gas from overflowing; when the user uses it in a working area, the user opens the air nozzle 211 to start deflation, and when the buffer assembly 21 and the elastic component 22 are in contact, the user closes the air nozzle 211 to stop deflation;

[0046] A speaker 212 is fixedly installed at the tail end of the buffer assembly 21. When the user moves, the elastic component 22 is squeezed, which in turn squeezes the speaker 212 and makes the speaker 212 emit a sound, thereby reminding the user whose vision is blocked due to carrying heavy objects, and preventing unnecessary collisions.

[0047] like Figure 8 As shown, the elastic component 22 is a wave spring. Wave springs have a compact structure and advantages such as high strength, good flexibility, and strong impact resistance. They are suitable for small spaces between the sole 2 and the upper shoe body 1. Furthermore, the support points on the upper and lower surfaces of the wave spring are evenly distributed, improving the overall stability of the shoe. The elastic component 22 is made of carbon fiber spring material because it is lightweight and has a long service life. The front end of the elastic component 22 has a toe-fitting recess; this recess allows for better toe-fitting and thus better force application from the toes.

[0048] like Figure 6 As shown, a memory foam 3 is fixedly installed above the air vent at the front of the shoe cavity. The side of the memory foam 3 facing the end of the shoe cavity is corrugated to fit the toes. The memory foam 3, fixed above the air vent at the front of the shoe cavity, has a certain degree of breathability. While not obstructing the airflow in the shoe cavity and movement chamber through the air vent, it also restricts the toes to prevent them from blocking the air vent. The memory foam 3 is soft and elastic, protecting the toes when the shoe is compressed and rebounding to its original shape when the foot leaves the shoe cavity. It also has a certain sweat absorption capacity, reducing the friction between the toes and the front side wall of the shoe cavity during walking. The corrugated surface of the memory foam 3 in contact with the toes allows it to fit the toes more closely, improving the user's comfort.

[0049] like Figure 6As shown, a buffer pad 4 is fixedly provided on the top of the limiting wall 23. The greater the user's weight, the greater the deformation of the elastic component 22 when walking, and the greater the vertical displacement of the limiting wall 23 in the active cavity. When the user's weight is too heavy, the limiting wall 23 may collide with the top of the active cavity when walking, resulting in discomfort. Therefore, a buffer pad 4 is fixedly provided on the top of the limiting wall 23. The buffer pad 4 is made of rubber and has a certain elasticity, which can buffer and absorb the collision, reducing the user's discomfort.

[0050] like Figure 9 As shown, the cushioning pad 4 has a hard rubber bottom and a sponge pad top. The sponge pad top of the cushioning pad 4 is designed to provide a good foot environment for the user, while the hard rubber bottom of the cushioning pad 4 is designed to allow the cushioning pad 4 to quickly lift up at the heel when the toe of the shoe is squeezed, thereby working with the cushioning device to quickly remove the user's foot.

[0051] like Figure 6 As shown, the bottom of the sole 2 is provided with anti-slip treads 24, which are shaped like contour lines of a mountain. The anti-slip treads 24 on the bottom of the sole 2 are used to increase the friction of the sole 2. When the user is exercising at high speed, if the sole 2 slips on the ground, it will increase the risk of the user spraining their ankle. The anti-slip treads 24 are designed to be shaped like contour lines of a mountain to better distribute the pressure on the user. The center of gravity of the two contour lines corresponds to the two force points of the forefoot and the heel. The anti-slip treads 24 can distribute the energy of the two force points to the area around the center point, thereby providing better cushioning for the user.

[0052] Second Implementation Method

[0053] The cushioning pad 4 can also be made entirely of hard rubber, and nylon fibers are placed inside the cushioning pad 4. When the user squeezes the cushioning pad 4, the nylon fibers inside the cushioning pad are also squeezed. At this time, the nylon fibers will have an upward elastic force. Under the action of the elastic force, the nylon fibers will give the user an upward force, thus helping the user to remove their foot more quickly.

[0054] When working, the user inserts their foot into the shoe through the opening at the rear of the upper shoe body 1. The upper and tongue 12 are used to fix and lock the foot in place. The sole 2 is fixed to the upper shoe body 1 by the shoe edge, forming a sealed space between the sole 2 and the upper shoe body 1. When not working, the risk to the instep is relatively low, and the cushioning component 21 can be inflated. The restarted cushioning component 21 is equivalent to a soft air cushion, increasing the user's comfort when not working. When the user is working, especially in a factory environment where dangers are everywhere, the cushioning component 21 can be deflated, allowing the elastic component 22 to fit tightly.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special operation protection shoe comprising an upper shoe body (1) and a shoe sole (2), characterized in that: The upper surface of the sole (2) has a cushioning component (21) for absorbing pressure and allowing the worker to pull their foot out in time. Inside the cushioning component (21) is an elastic component (22) for cooperating with the cushioning component (21) to relieve the pressure. The bottom of the upper shoe body (1) has an upwardly recessed movable cavity. The movable cavity provides deformation space for the elastic component to relieve the pressure encountered by the worker. The side wall of the movable cavity is located inside the fixed connection of the elastic component (22). A limiting wall (23) is fixedly installed on the sole (2). The cushioning component (21) and the elastic component (22) are both inside the limiting wall (23). The buffer component (21) is a segmented buffer component, and each segment of the buffer component (21) is interconnected; the buffer component (21) adopts a structure that is thin at the toe and thick at the heel; at the same time, the thickness of the buffer component (21) located at the toe is 1cm, and the thickness of the buffer component (21) located at the heel is 3cm. An air nozzle (211) is fixedly installed at the tail end of the cushioning component (21), and a sound generator (212) is fixedly installed on the sole (2); the elastic component (22) is shaped like a wave spring, the material of the elastic component (22) is carbon fiber elastic component material, and the front end of the elastic component (22) is provided with a toe-fitting recess.

2. A PPE shoe according to claim 1, characterized in that: The bottom of the buffer component (21) is hardened.

3. The special operation protective shoe according to claim 1, characterized in that: Memory foam (3) is fixedly installed above the air hole at the front end of the shoe cavity of the upper shoe body (1), and the memory foam (3) has a wavy shape on the side facing the end of the shoe cavity that fits the toes.

4. A special duty protective shoe according to claim 1, wherein: A buffer pad (4) is fixedly provided on the top of the limiting wall (23).

5. A special duty protective shoe according to claim 4, wherein: The bottom of the buffer pad (4) is made of hard rubber, and the top is made of sponge pad.

6. A specialty safety shoe according to claim 1, wherein: The bottom of the buffer assembly (21) is provided with anti-slip texture (24).

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