Multi-layered elastic protection device for reducing impact force and life preservation device

Abstract

The present invention relates to a lifesaving device using a partition space composed of multiple walls and air pressure, which enables a user to quickly protect himself or herself in a large-scale disaster situation such as a tsunami and safely wait until rescue. The present invention has an outer shape similar to a perfect sphere such as a soccer ball so as to effectively disperse and dissipate impact force from the outside with durability, elasticity, rotational energy, moving energy, and the like, thereby safely preserving the inside of the lifesaving device. According to the present invention, this device is easy to carry or store, and a user can deploy this device alone to protect himself or herself. In addition, a user can escape from the disaster situation on his or her own, or request rescue, and can safely wait therein until rescued.

Description

Multilayer elastic protective gear and life support devices for impact force mitigation

[0001] The present invention relates to a device that can protect a person's body and maintain life in a situation where it is difficult to escape from a water-related disaster on land or sea, such as a tsunami, flood, shipwreck, or sinking.

[0002] To explain in more detail, multiple layers of elastic spheres are overlapped and each sphere is connected with ribs to form a bulkhead space, and each bulkhead space is filled with air at a certain pressure (bar or psi), and the innermost wall is configured as a refuge space where people can take refuge.

[0003] In the refuge space, various devices such as air pumps, drainage pumps, distress signal transmitters, radios, and securing devices such as seat belts are installed, and these securing devices are used to secure the life-saving equipment and people to the lower part of the refuge space, thereby acting as a balance weight for the life-saving equipment.

[0004] According to the present invention, the multi-spheres gain elasticity due to air pressure, and this elasticity absorbs or converts impact force into other energy to dissipate it. The present invention relates to a device and method for generating buoyancy due to the air pressure filling each bulkhead space of the multi-spheres, and this buoyancy keeps the spheres constantly floating above water, thereby allowing safe evacuation from the interior until the disaster is over or rescue is possible.

[0005] Typically, when a flood or tsunami occurs, people can evacuate to a safe area or use submarines, ships, or lifeboats. However, if there is insufficient time to evacuate to a safe area, if evacuation ships or lifeboats are unavailable, or if the disaster is widespread, it becomes difficult to protect or sustain human life from the disaster. For example, the tsunami off Sumatra, Indonesia, killed 220,000 people in Indian Ocean coastal countries. Even in Japan, a relatively well-prepared tsunami-hit country, a single earthquake killed over 20,000 people. On land, a dam failure caused floods that killed over 10,000 people within 90 minutes. In such situations, the only way for people to escape a disaster is to evacuate to a safe area.

[0006] As mentioned above, the only way for humans to escape disasters such as tsunamis or floods is to evacuate to a place that is not in contact with water, and most residents in disaster areas do not have the opportunity to choose submarines, ships, or lifeboats as shelters. In addition, most of the devices that have been applied for to prepare for the dangers that this invention is trying to avoid are based on lightweight concrete, metal, or plastic materials made of PVC, so external impact (impact force) is directly transmitted to the lifesaving device, making it easy for people in the shelter inside to be injured. In addition, they are easily damaged by the pressure of strong waves or when colliding with floating objects or fixed structures such as buildings, and there is always a risk of capsizing. In addition, they are generally shaped like ships or are bulky, making them inconvenient to store and transport.

[0007] In addition, existing semi-submersible lifeboats have strong resistance to water and do not drift easily, so they are constantly exposed to the risk of collision with floating objects in the water, and the risk of capsizing is very high in areas where sand dunes have formed under the water.

[0008] The present invention is to protect human lives from disasters and to enable people to remain alive safely until rescued when a disaster occurs and they are in a situation where evacuation is difficult regardless of whether a disaster warning is issued.

[0009] Another object of the present invention is to solve the problem that most of the life-saving equipment in the prior art (KR 10-1855724 (2018. 5. 2), KR 20-0358874 (2004. 8. 4), KR 10-0841045 (2008. 6. 18), KR 10-1102250 (2011. 12. 28), KR 20-0310960 (2003. 4. 7), KR 10-1554275 (2015. 9. 14)) are made of solid materials, so they have weak functions of absorbing or alleviating external shocks, and their upper parts are exposed in shape, so they are not suitable for tsunamis or large-scale floods, and even if their upper parts are not exposed, they are covered with weak coverings, so they are vulnerable to shock absorption, which is important for dissipating the mechanical elasticity transmitted to the life-saving equipment by waves or impacts, and are prone to rotation. This is to solve problems such as the difficulty in converting kinetic energy or moving kinetic energy, which requires the life-saving equipment itself to have strong durability to withstand all of that force.

[0010] Another object of the present invention is to utilize a dynamic mechanism that effectively disperses and dissipates impact force into various energies, unlike existing inventions that must dissipate impact force into endurance from the viewpoint of conservation of kinetic energy.

[0011] Another object of the present invention is to miniaturize and simplify the life-saving device to a level where it can be stored and carried by an individual and deployed by one's own power.

[0012] To achieve the above purpose, the present invention utilizes the principles of a soccer ball and the principles of an amnion.

[0013] When a soccer ball collides with a strong force, it spins and bounces. During this process, some of its shape is distorted, absorbing the force. While it recovers elastically, it bounces back, transferring energy through friction with the air during linear or rotational motion. This process dissipates the impact force into various forms of energy.

[0014] At the same time, the shelter space was designed like an amniotic membrane to completely separate people and hazards and protect people inside the shelter space from external impacts. That is, when the multi-spheres perform elastic absorption, rotation, and movement to convert various kinetic energies, there will be severe impacts and shaking. However, the interior of the multi-spheres was designed like an amniotic membrane so that external forces are not transmitted to the interior, and even if there is an internal collision, the body will not be damaged.

[0015] In addition, it is equipped with auxiliary equipment that can be simply folded and stored or carried for transportation in normal times, and in the event of a disaster, the device can be deployed within minutes to allow people to enter a shelter, protect them from injury from impact while floating in water, and maintain life for a considerable period of time.

[0016] Hereinafter, the present invention will be described in detail as a ‘multi-sphere’.

[0017] In a disaster, various hazardous materials float on the water surface, and strong waves can collide with these hazardous materials and multiple spheres. To protect occupants within the shelter from such collisions, the spheres must float, have a durable protective layer outside the shelter, and be able to dissipate the mechanical elastic force into different energies, similar to a kicked soccer ball bouncing off the ground, thus mitigating the impact force.

[0018] To achieve this, the sphere must be filled with high-pressure air. However, as the air pressure inside the sphere increases, the pressure exerted on the body also increases, potentially leading to death. Therefore, the space for filling the air and the space for evacuating people must be separated.

[0019] The present invention is a multi-structured structure with a ball within a ball, and after forming a partition with ribs to create a space, this space is filled with high air pressure, and the inside of the innermost ball is maintained at atmospheric pressure, thereby creating a safe space that has buoyancy to float on water and in which people can take refuge.

[0020] The outer and inner walls are manufactured from materials that can withstand high pressure and waves or external impact forces, and the outer and inner walls are connected to each other with ribs to prevent the refuge space from narrowing due to air pressure entering between the outer and inner walls and to provide high bearing capacity.

[0021] The shelter space, which is inside the innermost wall of the multi-sphere, is a space free from the air pressure between the outer and inner walls, where outside air is sucked in and inside air is discharged to the outside, maintaining a constant safe pressure similar to atmospheric pressure.

[0022] Since multi-spheres cannot be stored in an air-filled state, they are usually folded and made smaller.

[0023] To explain how the device unfolds from a folded state into a sphere, the folded device is inflated by an air pump after unfolding. The air pump can be a battery-powered automatic pump or a manually operated manual pump, and the present invention utilizes both. First, inflating the device in the first stage creates a rough spherical shape, allowing a person to enter the device.

[0024] When the first stage of air intake is completed, a person enters the internal refuge space (S in Fig. 1) through the opening of the sphere (1-1 in Fig. 2), and after entering the refuge space, the sphere is sealed using the locking device of the opening (1-1R, 1-1L in Fig. 4). Once the sphere is sealed, the second stage of air intake is operated to inject air into the bulkhead space (including 3-1 to 3-4 in Fig. 2 and all adjacent bulkhead spaces) up to a certain pressure.

[0025] Before disaster strikes, lie down on the lower level of the shelter and secure yourself to the sphere using the attached safety belt or other equipment. Use your hands and feet to support yourself against the safety equipment on the sides (see Figure 2). This not only ensures safety, but also acts as ballast water to ensure the multiple spheres remain balanced.

[0026] After the disaster begins in earnest, the sphere floats on the water, and the air layer in the bulkhead space of the multiple spheres absorbs various external impacts, and when a strong external impact force such as a wave or a solid object is applied, the sphere absorbs some of it due to the elasticity formed by the air pressure, and some of it rotates or bounces like a ball, thereby eliminating the mechanical elasticity (see Figure 8).

[0027] If the disaster ends and you're floating on the water, you can use your internal magnetic power to rotate the sphere to a nearby safe location, or use the distress signal transmitter to request rescue and wait. If you have time to spare, you can bring some water and food with you to extend your wait time. Urine or any water that has seeped into the sphere can be discharged to the outside using the sphere's drain pump.

[0028] When getting off the multi-sphere, you can unlock the opening and get out in the reverse order of boarding.

[0029] Hereinafter, the features of the present invention will be described in detail.

[0030] The first characteristic of the lifeboat that the present invention seeks to implement is that it is a sphere like a soccer ball.

[0031] The present invention further features a method similar to that used to join multiple soccer ball pieces using a forming mold technique to form a multi-sphere. Specifically, for example, partition walls of different dimensions are created for the outer, middle, and inner walls based on the curvature of the spheres, and each partition wall is connected sequentially, starting from the inner wall and continuing to the outer wall.

[0032] Another feature of the present invention is that it is designed to maintain elasticity due to air pressure and forms a shelter space in which people can take refuge within a multi-sphere formed of a protective film of equal thickness in the six directions (east, west, south, north, up, down).

[0033] Another feature of the present invention is that it forms a partition space by connecting multiple layers of walls with ribs.

[0034] The above sphere is further characterized by a multi-layered baffle configuration that prevents damage from being transmitted to other parts even if one part is damaged.

[0035] Another feature is that air is injected into the space between the bulkheads using an air pump, and when the air pressure of one bulkhead space reaches a certain pressure, air is sequentially injected into the adjacent bulkhead space, and at the same time, a backflow prevention device is attached to prevent water from flowing into the interior even if the outer wall is damaged.

[0036] Another characteristic of the above sphere is that the sphere is configured by calculating appropriate air pressure and appropriate buoyancy, and dissipates external impact force into elastic force, rotational force, kinetic energy, frictional force, etc., thereby dissipating the force.

[0037] Another feature of the above sphere is that it is foldable for easy storage, portable, and can be deployed magnetically.

[0038] Another feature of the above sphere is that it lowers the center of gravity by having a person lie on the floor of the evacuation space and secure it with a seat belt or the like, and the weight of the person acts as ballast water so that the multiple spheres can always maintain balance.

[0039] Another feature of the above sphere is that it has an opening for entry and exit at the top of the wall, and after a person enters the opening, it can be locked by itself using a locking device from the inside.

[0040] The above-mentioned sphere is further characterized by circulating air to supply fresh air to the refuge space using a separate air pump.

[0041] Another feature of the above-mentioned sphere is that it uses a drainage pump to forcibly drain water and urine that have entered the evacuation space to the outside.

[0042] Another feature of the above sphere is that it can rotate the sphere by magnetically crawling along the inner wall of the sphere and moving to a safe area.

[0043] As described above, according to the present invention, the sphere can be simply folded and stored or carried in normal times, and minimizes injury by forming buoyancy using air pressure and dissipating and dissipating impact force, and in the event of a disaster, the sphere can automatically deploy to prevent injury and save lives from the disaster.

[0044] Furthermore, if swept away and adrift in the sea, you can safely return to shore on your own, or if you find yourself in an area where navigation is difficult, you can send a distress signal to request rescue. You can bring a small amount of food and drinking water on board, and urine can be drained out using a drain pump. Children can ride with a guardian.

[0045] Figure 1 is a schematic diagram of an expanded sphere;

[0046] Figure 2 is a diagram of the sphere's structure,

[0047] Figure 3 is a configuration diagram of the bulkhead space.

[0048] Figure 4 shows an opening leading into and out of the refuge space.

[0049] Fig. 5 is a backflow prevention device,

[0050] Figure 6 shows the optimal buoyancy sea level,

[0051] Figure 7 shows the impact point and the dissipation of the role energy.

[0052] Figure 8 is about the distribution of energy by activity.

[0053] The present invention is described in more detail with reference to the attached drawings as follows.

[0054] The above drawing 1 is a schematic diagram of an expanded sphere.

[0055] The present invention is a sphere (1) having an overall shape close to a perfect sphere, and the walls are composed of multiple layers of elastic walls (2-1, 2-2, 2-3, 2-4, 2-5 in Fig. 2). The present invention is divided into an upper part (T) and a lower part (B), and has an escape space (S) inside the sphere where a person can take refuge. A person (P) can lie down in the escape space. It acts as a ballast by securing the weight of the person to the lower part.

[0056] The above drawing 2 relates to the configuration of a sphere.

[0057] Figure 2 is a drawing that combines a plan view and a cross-sectional view. The spherical body has the shape of a plan view, and the appearance of various devices attached and a person being restrained has the shape of a cross-sectional view.

[0058] First, symbol 1 is a multi-sphere. The multi-sphere is shaped by multiple layers of walls (2-1 to 2-5) and partition walls (3-1 to 3-4) formed by ribs (4). Symbol 2-1 is called the outermost wall, symbol 2-5 is called the innermost wall, and symbols 2-2 to 2-4 are called intermediate walls. These walls are connected and partitioned by ribs (4) to form partition walls. As for the partition walls, symbol 3-1 is called the outermost partition wall, symbol 3-4 is called the innermost partition wall, and symbols 3-2 and 3-3 are called intermediate partition walls.

[0059] These walls, ribs, and the bulkhead spaces formed by them do not refer to just the location indicated by the symbol, but to all adjacent bulkheads, ribs, and bulkhead spaces in all directions. 1-2, 1-3, and 1-4 in Fig. 1 show an independent bulkhead space, which is described in detail in Fig. 3.

[0060] The multi-sphere is made of a soft material that can be folded and stored, so it cannot maintain its own shape. The shape of the multi-sphere is maintained by the air pressure injected into the bulkhead space (3-1 to 3-4). The air enters the refuge space (S in Fig. 1) through the air intake port (5-1) and is injected using the bulkhead space air injection air pump (8-1) installed in the refuge space.

[0061] The term "air pump" includes an air pump that is driven by an electrical device as well as an air pump that can be operated manually, and the present invention uses both in parallel.

[0062] Another air pump, the air pump for air circulation in the refuge space (8-2), is used when forced circulation of air in the refuge space is necessary in preparation for an emergency, and can be used as a substitute in the event of a breakdown of the air pump for air injection in the bulkhead space.

[0063] First, the first thing to do after entering the shelter is to fill it with air.

[0064] First, hoses connected to each innermost bulkhead space (3-4) are built into the innermost wall (2-5) like a neural network. When air is injected using the bulkhead space air pump (8-1), all innermost bulkhead spaces begin to fill with air.

[0065] At this time, as the innermost bulkhead space is filled with air, the approximate shape of a sphere is formed, and when the shape of the refuge space is completed, the opening (1-1) is sealed while the air is being filled. The opening and the sealing method are described in detail in Fig. 4.

[0066] Once the opening (1-1) has been sealed, immediately lie down on the neck support (7-2) on the floor, fasten the seat belt (7-3), secure your feet to the footrests (7-4) and ankle supports (7-5), and grasp the handles (7-1) above your head with both hands to completely secure your body and the multi-sphere. By securing your body to the floor, your body acts as a counterweight, which helps the sphere regain its posture when it sways or rotates.

[0067] It can shorten evacuation time because people can lie down and assume a safe position before the air is completely filled.

[0068] When the air pressure in the innermost bulkhead space (3-4) reaches a certain level, the seal (61 in Fig. 5) of the backflow prevention device (6) opens by pushing the compression spring (62 in Fig. 5), and air begins to be injected into the intermediate bulkhead space (3-3). The backflow prevention device is described in detail in Fig. 5.

[0069] Air is injected from the intermediate bulkhead space (3-3) to the adjacent external intermediate bulkhead space (3-2) using the same principle as above, and as air is injected to the outermost bulkhead space (3-1) using the same principle, it expands completely and the multi-sphere is set in its shape.

[0070] When the air pressure in each bulkhead space reaches a certain level, no more air is injected.

[0071] In order to withstand this air pressure and external impact, the material that makes up the outermost wall (2-1) of the sphere must have a low coefficient of friction, yet be durable, elastic, and resilient. On the other hand, the innermost wall (2-5), as it is the part that comes into contact with the human body, must be made of a material that is somewhat soft, yet not easily slippery, and has the durability and resilience to withstand air pressure so that it does not cause injury even if the human body hits the wall.

[0072] In addition to firmly fixing each wall, the ribs (4) help to find a balance between the force of the outermost wall (2-1) trying to expand outward and the force of the innermost wall (2-5) trying to expand inward, thereby preventing the sphere from expanding excessively outward or inward due to air pressure.

[0073] There are many ways to create a bulkhead space by connecting ribs and walls, including straight, diagonal, and truss shapes, and the bulkhead space can be configured in various shapes, such as square and honeycomb.

[0074] There are two hoses leading from the shelter to the outside.

[0075] Hose 5-1 is a hose that allows natural circulation of outside air and the internal air within the refuge space. If the hose becomes clogged or the internal carbon dioxide concentration increases, the air pump (8-2) for the refuge space air circulation is activated to force air circulation.

[0076] Hose 5-2 is used to drain water and waste, such as urine, that has entered the evacuation area. Some water may enter the evacuation area through openings or air hoses. Furthermore, if you become tense or remain in the evacuation area for an extended period, drainage problems may occur. In such cases, a drain pump (8-4) can be used to drain the water outside through the drain pipe (5-2).

[0077] In addition to this, there is a distress signal transmitter (8-3) inside the shelter to request rescue and a radio receiver (8-5) to listen to the disaster situation.

[0078] The above drawing 3 relates to the configuration of the bulkhead space.

[0079] A bulkhead space consists of multiple layers of walls and ribs connecting them. Figure 3 shows how each bulkhead space is connected.

[0080] A backflow prevention device assembly (6-1) is mounted on the inner surface of the outermost bulkhead space (3-1). The intermediate bulkhead spaces (3-2, 3-3) are equipped with a connecting fixing nut (6-2) on the outer surface and a backflow prevention device assembly on the inner surface. Finally, the innermost bulkhead space is equipped with a connecting fixing nut on the outer surface and an air inlet (INJ) on the inner surface.

[0081] When connecting two bulkhead spaces, fasten the backflow prevention assembly and connecting fixing nut of each bulkhead space.

[0082] Finally, the innermost air inlet is connected to an air injection hose (HOSE). The air injection hose may be integral with or separate from the innermost wall (2-5).

[0083] The air injection hose is connected to the air pump (8-1).

[0084] Fig. 4 is about an opening leading into a multi-sphere refuge space.

[0085] Before being deployed, the sphere is stored in a folded state. When the sphere is unfolded on a flat surface, there is an opening (1-1) in the upper hemisphere of the sphere, and there are locks on both sides of the opening, one on the right (1-1R) and one on the left (1-1L), which can be opened from each other.

[0086] Each lock has a zipper and Velcro attached, so close the zipper first, starting from the outer wall, and then seal it by attaching the Velcro over the zipper.

[0087] When the disaster stabilizes, you can temporarily open the opening to check the outside situation, and when the situation is over, you can exit through the opening.

[0088] Fig. 5 is about a backflow prevention device (6).

[0089] The backflow prevention device consists of a connecting fixing nut (6-1) and a backflow prevention device assembly (6-2), and the backflow prevention assembly consists of a sealing device (61), a compression spring (62), a spring fixing nut (63), and a bolt (64).

[0090] A backflow prevention device is a device that opens a seal when air pressure exceeds the compression spring's strength, compressing the spring and allowing air to flow. Simultaneously, it prevents air from flowing back when pressure increases due to a strong external impact, preventing the impact from being transmitted internally. It also prevents water from entering the inner bulkhead if the outer bulkhead is damaged.

[0091] A backflow prevention device is installed in all bulkhead spaces to allow each bulkhead space to function independently, so that even if one wall is damaged, the remaining walls maintain effective air pressure and prevent water from seeping inside.

[0092] If water inevitably seeps into the multi-sphere and accumulates in the refuge space, it can be drained using a drain pump (8-4).

[0093] Figure 6 is about the optimal buoyancy sea level.

[0094] The sea level formed around the multi-sphere is related to the buoyancy of the multi-sphere, and this buoyancy is related to the function of the multi-sphere to dissipate the impact force by dissipating it into various energies.

[0095] Sea level and buoyancy are the basis for calculating the appropriate payload. The formula for buoyancy is F = ρVg, where F is buoyancy (N, Newton), ρ is the density of the liquid (kg / ㎥), V is the volume of the submerged object (㎥), and g is the acceleration of gravity, which is 9.8 m / s2.

[0096] Buoyancy can be calculated from the average density of seawater in mid-latitude regions, 1.025 kg / m³, and the total mass of the multi-sphere (net mass of the sphere + mass of the occupant + mass of other).

[0097] According to the principle of buoyancy, an object displaces a volume of water equal to the portion of the object submerged. When the buoyancy force reaches a point of balance, the mass of the displaced water is equal to the total mass of the multi-sphere. Since 1 kg = 1 liter of water, converting the total mass of the multi-sphere into volume yields the height of the submerged sub-sphere. This sub-sphere height is the height of sea level where the multi-sphere touches the surface.

[0098] Considering the weight of the people in the shelter, the net weight of the sphere, and the total mass of emergency food and drinking water carried inside the sphere, the location of sea level shall be between 94 and 93. Based on the height of the submerged part of the sphere from the bottom, code 91 corresponds to 4 / 9 of the radius of the multi-sphere, code 92 corresponds to 3 / 9, code 93 corresponds to 2 / 9, and code 94 corresponds to 1 / 9. Code 95 is the point that becomes the bottom of the sphere.

[0099] The stability range of this sea level grounding line depends on the mass of the occupants and other items they carry, assuming that the mass of the multi-sphere is constant.

[0100] The net mass of the multi-sphere is subtracted from the gross mass when the sea level reaches position 94 of the multi-sphere, and the maximum load is subtracted from the gross mass of the multi-sphere when the sea level reaches position 93 of the multi-sphere, and is used as the appropriate load.

[0101] The maximum load and the optimum load are changed by the material from which the multi-sphere is made.

[0102] Figure 7 is about the collision between multiple spheres and floating objects.

[0103] Collisions between multiple spheres and floating objects can be explained using the principle of billiards. Typically, the point where floating objects on the sea surface collide with multiple spheres is near the sea surface.

[0104] When an impact occurs at a point (C) near the sphere and the sea level grounding line (93), the sphere rotates. If the direction of the impact is in the direction of C1, it rotates counterclockwise in the opposite direction. On the other hand, if it is in the direction of C2, it rotates clockwise. In this case, the multi-sphere rotates sideways. On the other hand, if an impact occurs head-on at the corresponding perimeter, the multi-sphere rotates up and down. When the impact point is C1 or C2, in addition to rotating sideways, it can also rotate partially up and down. This is about energy dispersion, and the multi-sphere dissipates the impact energy through frictional energy generated through left-right rotation and up-and-down rotation.

[0105] In Fig. 7, the horizontal line is called the x-axis, the vertical line is called the y-axis, and the z-axis is set to represent spatial coordinates. Now, when a perpendicular line is drawn from the point of impact to the plane formed by the x-axis and y-axis at the center of the multi-sphere, the opposite side of the triangle formed can be called the z-axis. In this case, let the angle made by the plane formed by xy and the straight line z be θ.

[0106] The cosine of 0 degrees is 1, and the cosine of 90 degrees is 0. If this θ value is converted to a cosine value, the amount of energy dissipated by the rotational force of the sphere can be calculated as a ratio for each sea level, and the amount of energy dissipated varies depending on the θ value of the collision point (C) depending on the location.

[0107] For example, let's say the impact point is the central front of a multi-sphere and the impact force is 1. Now, if the impact point is a point corresponding to half the radius in the lower hemisphere, the value of θ at this time is 45 degrees, and cosθ in this case is 0.7. Therefore, the impact force reduction effect in this case is 0.3, or 30%. Since cosine decreases as the value increases up to 90 degrees, the impact force reduction effect becomes greater the lower the impact point.

[0108] This reminds us of the importance of the position of sea level due to the buoyancy of the sphere.

[0109] When a tsunami occurs, the substances that apply impact can be divided into three types: waves, floating objects, and fixed objects such as buildings. The substance (water) or object (floating object, fixed object) that applies impact transfers impact energy to multiple spheres. The force at this time is called impact force or impact force. The physical theories and laws that explain the mechanical or dynamic elasticity when these impacting objects and multiple spheres collide include Hooke's Law, the Law of Conservation of Momentum, and Newton's Third Law.

[0110] Hooke's Law is used to describe general elasticity, and it expresses a linear relationship between the deformation (displacement) caused by an external force and the force that causes the deformation. The formula for elasticity is F = −kx (F: force, k: elastic constant, x: displacement).

[0111] Therefore, the impact force, which is the force applied to multiple spheres due to a collision, can be calculated based on the elastic modulus and displacement of the spheres and the colliding material, and a significant portion of it is absorbed by the elastic force created by the outer wall of the multiple spheres supported by air pressure.

[0112] According to the law of conservation of momentum, the remaining impact force absorbed and dissipated by the outer walls of the multi-spheres creates displacement within the multi-spheres. This displacement manifests as left-right rotation, up-and-down rotation, and distance travel. All of these represent energy dissipation.

[0113] Waves are made of water, and water does not have a compressive modulus but rather a compressible modulus or compressible elastic modulus that responds to pressure, so the elasticity of water can be calculated by applying 2.2 GPa.

[0114] According to Newton's third law, colliding objects generate forces in opposite directions through action and reaction. In other words, the sphere moves away from the colliding object, which is called movement. Movement can be divided into two types: rotational movement (movement in place) and physical movement (movement over a distance).

[0115] The present invention utilizes a spherical shape, optimal for implementing this energy-dispersing and dissipating mechanism. It utilizes air pressure to maximize energy dissipation and maintain constant buoyancy, and utilizes multiple spheres to enhance elasticity and durability. This differs significantly from other inventions that simply utilize buoyancy to float.

[0116] Regardless of the cause of the collision, the sphere must dissipate and dissipate the resulting mechanical elastic force, one of which is friction with water. This friction poses a threat to the sphere's safety.

[0117] The formula for calculating friction force is F = μ⋅N (F: friction force, μ: coefficient of friction, N: steady-state force). Since a sphere always floats on water, the steady-state force in this case is equal to gravity. The coefficient of friction varies depending on the surface condition between objects, the type of material, and the situation. The static friction coefficient is applied when the object is stationary, and the dynamic friction coefficient is applied when the object is moving. Typically, the static friction coefficient of water has a displacement of 0.1 to 0.3, and the dynamic friction coefficient is 0.07 or less. Therefore, the surface of the outermost wall (2-1 in Figure 2) uses a material that can minimize friction with water.

[0118] The above figure 8 shows the distribution of energy according to the situation.

[0119] In explaining the above Fig. 7, the energy dissipated and dissipated by the multiple spheres appears in various ways, such as the direction of each R in Fig. 8. That is, when an impact is applied to the multiple spheres, the multiple spheres rotate (R1), rise upwards (R2), or are pushed sideways and move (R3).

[0120] The multi-spheres of the present invention effectively disperse and dissipate impact force into various energies simultaneously.

[0121] It is the best form for carrying out the invention.

[0122] omission

Claims

1. A patent claim for a lifeboat comprising two or more elastic walls superimposed on each other and providing a refuge space within the walls. A lifeboat characterized in that the space between the walls of the multiple spheres is filled with air pressure in the range of 0.6 to 2.96 bar to establish the structure of the multiple spheres and maintain elasticity, and the refuge space is maintained at atmospheric pressure.

2. In the above claim 1; A patent claim for forming a multi-sphere wall by using a wall body and ribs to form a partition space and connecting these partition spaces to complete the wall body.

3. In the above claim 2; A patent claim for attaching a backflow prevention device to the bulkhead space of the above multi-sphere. A patent claim for attaching the backflow prevention device to the bulkhead space of the above multi-sphere. A patent claim for including a bulkhead configuration that prevents damage from spreading to other parts even if partial damage occurs to the outer wall of the multi-sphere.

4. In the above claim 2; A patent claim scope in which, when a person in a refuge space, which is an internal space formed by the above multi-sphere bulkheads, uses an air pump to inject air into the bulkhead space at an appropriate pressure, air is gradually injected into an adjacent bulkhead space by the air pressure within one bulkhead space.

5. In claims 1 to 4 above; A patent claim that can manufacture a lifeboat that can accommodate one or more people by varying the size of the lifeboat using the above multi-sphere principle.

6. In claims 1 to 5 above; The scope of the claim relates to the exclusive use of the above multi-sphere for other purposes such as leisure activities.

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