Emergency floating device for seat backrest

Abstract

The invention provides a seat backrest emergency floating device which comprises a seat backrest, a movable plate and a storage tank, a containing cavity with an opening is formed in the seat backrest, and the movable plate is arranged in the containing cavity and can move towards the opening direction of the containing cavity under the action of external tension. The storage tank is fixed to the end, away from the movable plate, of the seat backrest and communicates with the containing cavity, and foaming agents are contained in the storage tank. The daily movable plate is located in the containing cavity to provide support, stability of the seat backrest is guaranteed, when the vehicle encounters the danger of falling into water, the seat backrest can be detached, the movable plate is rapidly pulled out of the containing cavity, meanwhile, the storage tank is opened, the foaming agent is rapidly released and rapidly fills the whole containing cavity, and the seat backrest is supported; the movable plate and the foaming agent are both buoyancy materials and can provide buoyancy for the whole seat backrest to enable the seat backrest to become an emergency floating plate, so that a person in distress can quickly emerge from the water surface through the floating plate at the first time and can float on the water surface for a long time to wait for rescue.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile safety facilities, and in particular relates to an emergency floating device for a seat back. Background Art

[0002] With the increasing demand for short-distance travel, people have many new demands for vehicle driving safety and emergency avoidance capabilities. When crossing rivers and seas or wading in distress, people's reliance on vehicle safety will also increase significantly. When a vehicle is in distress and falls into the water, passengers can only rely on their own abilities to quickly float to the surface. However, we cannot require all passengers to be excellent water players. At this time, the key issue is how to quickly float to the surface from the dangerous waters to wait for rescue. Therefore, it is of great significance to use the structural design of the vehicle to help people in distress quickly float to the surface to wait for rescue. When passengers are in distress in the water, they are located in the seat space. If the vehicle seat back can be made into a tool for escaping from distress in the water and keeping floating, it will be convenient for passengers in distress to save themselves in time at the first time and quickly and easily get out of trouble; how to design the seat back can not only ensure that the daily use of the seat is not affected, but also can easily realize the rapid transformation of the seat back in special circumstances of distress in the water, so that it can become a reliable emergency floating tool and quickly float to wait for rescue. These are all issues that need to be considered. Summary of the invention

[0003] In view of the shortcomings of the prior art mentioned above, an object of the present invention is to provide a seat back emergency flotation device, which can quickly transform the seat back into a reliable emergency flotation tool in case of distress in water, helping people in distress to quickly surface to the surface and float on the water for a long time, safely waiting for rescue.

[0004] To achieve the above objectives and other related objectives, the present invention provides a seat back emergency flotation device, comprising:

[0005] A seat backrest is detachably connected to the seat and has an accommodating cavity with an opening formed therein;

[0006] A movable plate is disposed in the accommodating cavity and can move toward the opening direction under the action of a pulling force;

[0007] A storage tank is fixed to one end of the seat back away from the movable plate and communicated with the accommodating cavity, wherein a foaming agent is contained in the storage tank and a sealing switch is provided on the storage tank, wherein the sealing switch is connected to the movable plate;

[0008] The movable plate and the foaming agent are buoyant materials. When the movable plate moves toward the opening direction, the sealing switch is driven to operate and the storage tank is opened, and the foaming agent is released into the accommodating cavity and fills the accommodating cavity.

[0009] In an optional embodiment of the present invention, a slide rail is further provided in the accommodating cavity, and the movable plate is connected to the seat back via the slide rail.

[0010] In an optional embodiment of the present invention, the slide rails are arranged along the height direction of the seat back, are symmetrically distributed in the accommodating cavity, and are connected to the movable plate.

[0011] In an optional embodiment of the present invention, the slide rails are arranged on both sides and a central position of the accommodating cavity and are connected to the movable plate.

[0012] In an optional embodiment of the present invention, the movable plate is an EVA plate.

[0013] In an optional embodiment of the present invention, the foaming agent is a polyurethane foaming agent.

[0014] In an optional embodiment of the present invention, the storage tank includes a tank body and an opening, and an end of the opening away from the tank body is connected to a conduit and a nozzle.

[0015] In an optional embodiment of the present invention, the sealed switch is disposed in the storage tank, and the sealed switch comprises:

[0016] A first movable member is arranged along the axial direction of the opening, one end of which is located in the tank body and the other end of which is located in the opening, and a hollow chamber is formed inside the first movable member;

[0017] an elastic member, which is arranged at the connection end between the opening and the tank body, one end of the elastic member is fixed to the storage tank, and the other end is fixed to the first movable member, and the elastic member is compressed when the storage tank is in a closed state;

[0018] a second movable member, which is arranged along the radial direction of the opening, and when the storage tank is in a closed state, a side surface of the second movable member abuts against an end of the first movable member to seal the tank body;

[0019] One end of the second movable member is connected to the movable plate. When the movable plate moves toward the opening, the second movable member is pulled to separate from the first movable member, and the elastic force of the elastic member is released, driving the first movable member to move toward the opening away from the end of the tank body and communicate with the conduit.

[0020] In an optional embodiment of the present invention, a through hole is axially opened in the first movable member, the through hole forms the hollow chamber, and at both ends of the first movable member, the diameter of the through hole gradually increases toward the end.

[0021] In an optional embodiment of the present invention, at one end close to the tank body, the through hole further forms a spherical cavity outwardly, and the two spherical cavities are distributed along the axial direction of the first movable member.

[0022] The technical effect of the present invention is that a storage cavity is formed inside the seat back, which is used to store movable panels in daily use and serves as a release space for the foaming agent when the person is in danger and falls into the water; the EVA plate is fixed in the storage cavity and can move toward the opening direction under the action of tension, and is used to support the seat back in daily use, and is pulled out as an extension plate to support the human body and provide buoyancy when the person is in danger and falls into the water; at the same time, a storage tank for polyurethane foaming agent is also provided in the seat back, which is kept sealed and arranged in the seat back in daily use, and the sealing switch of the storage tank is connected to the EVA plate, and the sealing switch will be opened when the EVA plate is pulled out, so that the polyurethane foaming agent can quickly expand and solidify and fill the entire storage cavity, and the seat back is foamed by the solid foaming agent. It provides support and upward buoyancy, so that the entire seat back can be quickly transformed into a reliable emergency floatation board in the first moment of distress, helping the person in distress to float to the water surface quickly. The emergency floatation board has high overall strength, which can ensure the safety when floating on the water surface and floating on the water surface for a long time, so as to better wait for further rescue; the setting of the slide rail enables the EVA sheet to be pulled out smoothly and provides a stable upward lifting force for the overall structure; the structural design of the sealed switch and the storage tank ensures the rapid and smooth release of the polyurethane foaming agent; the overall design is reliable and easy to operate, which can help the person in distress to quickly rescue himself and float to the water surface when in distress in the water, and float on the water surface for a long time to wait for rescue, and will not affect the daily use of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a seat back emergency flotation device in one embodiment of the present invention;

[0025] Figure 2 It is a partial structural schematic diagram of a seat back emergency flotation device from another angle in one embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the partial structure of the seat back emergency floating device after the movable plate is pulled out in one embodiment of the present invention;

[0027] Figure 4 It is a schematic structural diagram of a movable plate and a slide rail of a seat back emergency floating device in an accommodating cavity in one embodiment of the present invention;

[0028] Figure 5 It is a structural schematic diagram of another angle of the movable plate and the slide rail of the seat back emergency floating device in the accommodating cavity in one embodiment of the present invention;

[0029] Figure 6 It is a structural schematic diagram of a movable plate of a seat back emergency floating device in one embodiment of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the storage tank when the sealing switch of the seat back emergency flotation device is closed in one embodiment of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the storage tank when the sealing switch of the seat back emergency flotation device is turned on in one embodiment of the present invention;

[0032] Fig. 9 Schematic diagram of the structure of the first movable part of the seat back emergency flotation device in one embodiment of the present invention.

[0033] Marking Description:

[0034] 100, seat back; 200, movable plate; 300, storage tank; 400, slide rail;

[0035] 110, accommodating cavity; 210, drawer armrest;

[0036] 310, sealed switch; 320, tank body; 330, opening; 340, conduit; 350, nozzle;

[0037] 311, first movable member; 312, elastic member; 313, second movable member;

[0038] 3111, through hole; 3112, spherical cavity;

[0039] 3131. Blocking rod; 3132. Pull ring; 3133. Pull rope. DETAILED DESCRIPTION

[0040] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0041] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0042] With the increasing demand for short-distance travel, there are new demands for vehicle driving safety and emergency avoidance capabilities. For example, how to quickly save yourself when the vehicle falls into the water. This places certain requirements on the design of the vehicle. At present, the self-rescue design of many vehicles only considers opening the door or window after the car falls into the water, and then swimming out of the car. It does not consider how to effectively save people in distress who cannot swim. In addition, how to quickly save yourself in the first time of distress, and how to ensure the safety of people in distress while waiting for rescue when external rescue is not timely, these are all issues that need to be considered.

[0043] See also Figures 1 to 9The present invention provides a seat back emergency floating device, including a seat back 100, a movable plate 200 and a storage tank 300. The seat back 100 is detachably connected to the seat, and a receiving cavity 110 with an opening is formed therein. The movable plate 200 is arranged in the receiving cavity 110 and can move toward the opening direction of the receiving cavity 110 under the action of an external pulling force. The storage tank 300 is fixed to one end of the seat back 100 away from the movable plate 200 and is connected to the receiving cavity 110, and a foaming agent is contained therein. In daily use, the storage tank 300 remains sealed and fixed in the seat back 100, and the movable plate 200 is located in the accommodating cavity 110 to provide support, thereby ensuring the stability of the seat back 100 and not occupying additional space; when the vehicle encounters a dangerous situation of falling into water, the seat back 100 can be disassembled, and the movable plate 200 can be quickly pulled out of the accommodating cavity 110, and the storage tank 300 will be opened when the movable plate 200 is pulled, and the foaming agent in the storage tank 300 is quickly released and quickly fills the entire accommodating cavity 110, which is beneficial to the seat back. The seat back 100 is supported by the seat back 100, and the movable plate 200 and the foaming agent are both buoyant materials, which can provide upward buoyancy for the entire seat back 100 and the distressed persons thereon, forming a reliable emergency floating board, so that the distressed persons can use the seat back 100 for self-rescue and quickly float to the surface, and can float on the water for a long time to safely wait for rescue; the device as a whole adopts a high-density floating material, has a high density in water and has floating characteristics, can achieve a floating effect to facilitate the maintenance of vital signs of people in the water.

[0044] See also Figures 1 to 3 In an optional embodiment of the present invention, the seat back 100 is detachably connected to the seat, and a receiving chamber 110 is formed therein. The receiving chamber 110 can be located, for example, in the middle of the seat back 100, and its opening is arranged at one end close to the bottom of the seat back 100. The receiving chamber 110 can be used to receive the movable plate 200 on the one hand, and can provide space for releasing the foaming agent in the storage tank 300 when the movable plate 200 is withdrawn on the other hand. The seat back 100 can be stably supported by the foaming agent or the movable plate 200 in the receiving chamber 110. In daily use, the movable plate 200 is arranged in the accommodating chamber 110 to support the seat back 100. When the vehicle falls into water and is in distress, the seat back 100 can be quickly disassembled, and the movable plate 200 can be pulled out from the bottom of the accommodating chamber 110 as an extended extension plate. The foaming agent in the storage tank 300 is quickly released and fills the accommodating chamber 110. At this time, the seat back 100 and the extension plate at the end together constitute an emergency floating board, so as to provide buoyancy to drive the person who falls into the water to float quickly to the water surface, and ensure the safety and stability of the person in the water when floating on the water surface for a long time. It is understandable that the seat back 100 can also be provided with a fixing strap to fix the person in distress on the emergency floating board to ensure safety.

[0045] See also Figures 1 to 3 In an optional embodiment of the present invention, the seat back 100 can also be made of special materials. By specially treating the back fabric, it can also provide a certain buoyancy in water. For example, polyester-spandex knitted fabric can be selected, which can provide relatively large buoyancy in water; or nylon fabric can also provide higher buoyancy in water and have good tensile elastic recovery rate.

[0046] See also Figures 1 to 5 In an optional embodiment of the present invention, a slide rail 400 is further provided in the seat back 100, and the movable plate 200 is connected to the seat back 100 through the slide rail 400, so that the movable plate 200 has good fixation in the accommodating cavity 110, and at the same time, the movable plate 200 can be pulled out of the accommodating cavity 110 conveniently, quickly and labor-savingly, and the extended movable plate 200 is connected to the seat back 100 by the slide rail 400, and the movable plate 200 is provided with support force to ensure the stability of the overall structure when the device is in use. Specifically, the slide rail 400 is arranged along the height direction of the seat back 100, one side of which is fixed in the accommodating cavity 110 of the seat back 100, and the other side is fixed to the movable plate 200. The slide rail 400 is used to connect the movable plate 200 to the seat back 100 to fix the movable plate 200, and the movable plate 200 and the slide rail 400 on one side thereof can be pulled to slide relative to the seat back 100 under the action of external pulling force, so that the movable plate 200 can be pulled out from the opening of the accommodating cavity 110 when needed.

[0047] See also Figures 1 to 5 In an optional embodiment of the present invention, the slide rails 400 are arranged along the height direction of the seat back 100, are symmetrically distributed in the accommodating cavity 110, and are connected to the movable plate 200. For example, the slide rails 400 can be installed on both the left and right sides and the center of the accommodating cavity 110. The movable plate 200 is connected to the seat back 100 through the symmetrically arranged slide rails 400, and can be quickly and stably drawn out of the accommodating cavity 110, which is more convenient and labor-saving. When the movable plate 200 is drawn out, it is located at one end of the seat back 100 as an extension, and is connected to the seat back 100 through the slide rails 400. The use of multiple slide rails 400 can provide a stable upward lifting force for the overall structure, ensuring the stability and reliability of the emergency floating board as a whole.

[0048] See also Figures 1 to 6In an optional embodiment of the present invention, the movable plate 200 is made of a buoyancy material, for example, the movable plate 200 can be an EVA (ethylene-acetate copolymer) plate, which has the characteristics of small mass, large volume, non-absorbent and large buoyancy, and is the best material for life-saving supplies. It can provide a good upward buoyancy for the entire device in the water, and it has high strength and good water resistance. It can provide support for the seat back to ensure the strength of the seat in daily use, and can provide good support for the personnel on the emergency floating board when it is pulled out in distress. The movable plate 200 at one end of the bottom of the seat back 100 can also be provided with a convenient pull-out handrail 210 to facilitate pulling out the movable plate 200. After the movable plate 200 is pulled out, it extends outward from the end of the seat back 100, which can provide a relatively friendly support force for the body, and at the same time provide upward buoyancy, so as to better lift the person out of the water. Of course, in other embodiments, the movable plate 200 can also be made of other similar materials with strong buoyancy, so as to provide sufficient buoyancy to quickly lift the person in the water to the surface.

[0049] See also Figures 1 to 9 In an optional embodiment of the present invention, the storage tank 300 is fixed to one end of the seat back 100 away from the movable plate 200, for example, it can be arranged in the seat back 100 and communicated with the accommodating chamber 110, the storage tank 300 has a foaming agent inside, and the storage tank 300 is also provided with a sealing switch 310, and the sealing switch 310 is connected to the movable plate 200. Under normal circumstances, the foaming agent in the storage tank 300 is sealed in the storage tank 300 by the sealing switch 310, and the storage tank 300 can be stored in the seat back 100 without occupying space. When the movable plate 200 moves toward the opening direction of the accommodating chamber 110, it will drive the sealing switch 310 to operate and open the storage tank 300, and the foaming agent will be released into the accommodating chamber 110 and fill the accommodating chamber 110.

[0050] Specifically, the foaming agent can be, for example, a polyurethane foaming agent, which can expand and solidify quickly in a short time, has high filling efficiency, and the foaming agent solid formed after solidification has high strength and good stability. After filling the entire hollow area in the accommodating cavity 110, it can support the seat back 100 to ensure the stability and reliability of the overall structure. At the same time, it also has high buoyancy. After filling the accommodating cavity 110, it will give the entire backrest floating device an upward buoyancy, and together with the movable plate 200, it will provide buoyancy to the human body to help the drowning person quickly float to the water surface. It can be understood that in other embodiments, the foaming agent can also be other types of foaming agents, and the foaming agent solid formed by its solidification can provide buoyancy to assist the person in the water to float to the water surface. For example, polyvinylidene fluoride (PVDF) or polytetrafluoroethylene (PTFE) can also be filled therein, so that it can be compounded with a matrix material such as epoxy resin to form a solid buoyancy material foaming agent that meets the conditions.

[0051] See also Figures 1 to 9 In an optional embodiment of the present invention, the storage tank 300 is, for example, a small aluminum bottle that can accommodate 100ML of polyurethane foaming agent, which is arranged on the top of the seat back 100. The storage tank 300 includes a tank body 320 for storing the foaming agent and an opening 330 located at one end of the tank body 320. The tank body 320 contains polyurethane foaming agent, and a sealing switch 310 is arranged between the tank body 320 and the opening 330 to seal the tank body 320. The end of the opening 330 away from the tank 320 is connected with a conduit 340 and a nozzle 350. The conduit 340 can be, for example, a soft conduit 340. When the sealing switch 310 is turned on, the polyurethane foaming agent inside the tank 320 is ejected through the conduit 340. The nozzle 350 is a mist nozzle 350. The foaming agent ejected from the conduit 340 can be evenly sprinkled in the accommodation cavity 110 formed after the movable plate 200 is extended through the nozzle 350. In just a few seconds, the polyurethane foaming agent can quickly expand and fill the entire cavity, forming a supporting floating structure inside the seat back 100. It can be understood that the foaming agent capacity in the storage tank 300 is adapted to the structure of the accommodation cavity 110 inside the seat back 100, and it is sufficient to ensure that the released foaming agent is sufficient to fill the entire accommodation cavity 110.

[0052] See also Figures 1 to 9In an optional embodiment of the present invention, the sealed switch 310 is disposed in the storage tank 300 , and includes a first movable member 311 , an elastic member 312 and a second movable member 313 . The first movable member 311 is arranged along the axial direction of the opening portion 330, one end of which is located in the tank body 320, and the other end of which is located in the opening portion 330, and a hollow chamber is formed inside the first movable member 311; the elastic member 312 is arranged at the connection end between the opening portion 330 and the tank body 320, one end of the elastic member 312 is fixed to the storage tank 300, and the other end is fixed to the first movable member 311, and the elastic member 312 is compressed when the storage tank 300 is in a closed state; the second movable member 313 is arranged along the radial direction of the opening portion 330, and when the storage tank 300 is in a closed state, the side surface of the second movable member 313 abuts against the end of the first movable member 311 to seal the tank body 320; by connecting the first movable member 311, the elastic member 312 and the second movable member 313, the tank body 320 can be sealed, and at the same time, it is ensured that the sealing switch 310 can be quickly opened and the tank body 320 and the accommodating chamber 110 can be connected, so that the polyurethane foaming agent can be quickly released into the accommodating chamber 110 under the action of pressure. One end of the second movable member 313 is connected to the movable plate 200. When the movable plate 200 moves toward the opening direction of the accommodating chamber 110, the second movable member 313 is pulled to separate from the first movable member 311, and the elastic force of the elastic member 312 is released, driving the first movable member 311 to move toward the end of the opening 330 away from the tank body 320, and communicate with the conduit 340, and the polyurethane foaming agent is evenly and quickly released into the accommodating chamber 110 through the nozzle 350. The sealing switch 310 is linked to the movable plate 200 by the second movable member 313. When the movable plate 200 is pulled 0, the storage tank 300 can be opened at the same time to release the polyurethane foaming agent in the tank body 320, and the overall transformation of the outer extension plate (i.e., the movable plate 200) and the internal supporting floating structure (i.e., the foaming agent solid) of the seat back 100 can be quickly completed, and the seat back 100 can be quickly transformed into an emergency floating board, so that people in distress can quickly save themselves at the first moment of distress, and the overall structure of the emergency floating board has high strength, good adaptability, safety and reliability, ensuring that people in distress can smoothly float to the surface and float safely on the water for a long time to wait for further rescue.

[0053] See also Figures 1 to 9In an optional embodiment of the present invention, the first movable member 311 is, for example, a cylindrical structure. When the storage tank 300 is sealed, it is installed between the tank body 320 and the opening 330 to close the end of the tank body 320. A through hole 3111 is axially opened in the first movable member 311. The through hole 3111 forms a hollow chamber of the first movable member 311. The through hole 3111 is used to connect the space between the tank body 320 and the opening 330. At both ends of the first movable member 311, the diameter of the through hole 3111 gradually increases toward the end. By opening a through hole 3111 with a smaller diameter in the first movable member 311 and adopting a wide-mouth structure design at both ends of the through hole 3111, it is ensured that the polyurethane foaming agent in the tank body 320 can quickly enter the hollow chamber of the first movable member 311 from the port, quickly pass through the hollow chamber, and then quickly flow out of the hollow chamber from the other end.

[0054] See also Figures 1 to 9 In an optional embodiment of the present invention, at one end near the tank body 320, the through hole 3111 further forms a spherical cavity 3112 outwardly, and there may be two spherical cavities 3112, for example, the two spherical cavities 3112 are distributed along the axial direction of the first movable member 311, and form a hollow chamber structure with the through hole 3111. Specifically, two spherical cavities 3112 may be arranged along the axial direction at one end of the tank body 320 near the storage tank 300, which can prevent the polyurethane foaming agent from being blocked when passing through the hollow chamber quickly so that it cannot be sprayed normally, and prevent the backflow of the liquid from being blocked and affecting its flow rate, so that the liquid can pass through the hollow chamber of the first movable member 311 quickly and smoothly, and realize the rapid transformation of the seat back 100.

[0055] See also Figures 1 to 9In an optional embodiment of the present invention, the second movable member 313 includes a blocking rod 3131, a pull ring 3132 and a pull rope 3133. The end of the blocking rod 3131 has a pull ring 3132, which is connected to one end of the pull rope 3133. The other end of the pull rope 3133 is connected to the movable plate 200 that can be withdrawn, so that the movable plate 200 can drive the second movable member 313 to move when it moves; the elastic member 312 can be, for example, a spring structure, one end of which is fixed to the end of the tank body 320, and the other end is fixed to the first movable member 311. When the sealed switch 310 is in the closed stage, that is, the storage When the tank 300 is sealed, the blocking rod 3131 passes through the opening 330 and abuts against the end of the first movable part 311 to close the hollow chamber. At the same time, the spring is in a compressed state under the action of the blocking rod 3131, and the first movable part 311 is located between the tank body 320 and the opening 330 to close the tank body 320, so that the foaming agent in the tank body 320 will not flow out; when it is necessary to open the sealing switch 310, the movable plate 200 is pulled down to drive the blocking rod 3131 to be pulled out. After the external force disappears, the spring elastic force is released, driving the first movable part 311 to move to the front end of the opening 330 and connect with the conduit 340.

[0056] See also Figures 1 to 9 In an optional embodiment of the present invention, the storage tank 300 is connected to the movable plate 200 by a second movable member 313. Pulling the movable plate 200 can drive the second movable member 313 to open the sealing switch 300, and quickly release the foaming agent in the storage tank 300 into the cavity formed inside the seat back 100 after the movable plate 200 is extended. It has a simple structure and is easy to operate. The characteristics of the foaming agent and the movable plate 200 are used to realize the rapid transformation of the emergency floating board without the need for additional equipment. Manual operation is not only simple and fast, but also safer and more reliable. At the same time, the overall strength of the transformed device is high and the stability is good.

[0057] See also Figures 1 to 9When a vehicle falls into water and is in distress, the person in distress can first remove the seat back 100 according to the specific design of the seat, put his hand on the pull-out armrest 210 at the bottom of the seat back 100, and pull the movable plate 200 downward with force. At this time, the movable plate 200 and the side slide rail 400 connected to the movable plate 200 will be subjected to a downward pulling force, so that the movable plate 200 can move out of the original fixed position in the seat back 100, and the movable plate 200 is pulled to one end of the seat back 100 to form an extension of the seat back 100, and the internal slide rail 400 can provide a stable lifting force for the overall structure, thereby providing support for the human body on the seat back 100, and at the same time, the material properties of the movable plate 200 enable it to provide an upward buoyancy for the device. When the movable plate 200 is pulled, the second movable part 313 on the sealing switch 310 of the storage tank 300 is also driven to fall off, causing the sealing switch 310 to be opened. Because the spring is in a compressed state before the second movable part 313 is pulled out, when the second movable part 313 is pulled out, the elastic force will be released instantly, and the second movable part 313 moves toward the opening 330 away from the end of the tank body 320 as the spring elastic force is released. At this time, since there is no object blocking the port of the hollow chamber of the second movable part 313, under the action of pressure, the polyurethane foaming agent in the tank body 320 will be quickly discharged along the hollow chamber. When the foaming agent passes through the hollow chamber quickly, it may cause liquid reflux. The two spherical cavities 3112 structure near one end of the tank body 320 is used to prevent slow flow rate and liquid blockage caused by liquid reflux, thereby ensuring The foaming agent is discharged quickly and smoothly; in the process of rapid discharge of the liquid, it will pass through the conduit 340 to the nozzle, and the polyurethane foaming agent can be evenly sprayed through the nozzle on the cavity formed after the movable plate 200 is pulled out of the seat back 100. In just a few seconds, the polyurethane foaming agent will quickly expand and fill the entire cavity. The foaming agent solid formed after filling can provide support for the entire seat back 100, so that the new structure formed after the movable plate 200 is pulled out is stable and reliable. At the same time, due to its material properties, an upward buoyancy is provided to the seat back 100 in the cavity. At this time, the seat back 100 and the movable plate 200 at the end constitute an emergency floating board as a whole, which can provide support and upward buoyancy to the person who falls into the water, help the person who falls into the water quickly float to the surface of the water, and can float on the water for a long time to wait for rescue.

[0058] In summary, in the seat back emergency floating device of the present invention, the vehicle seat back 100 is modified as an emergency tool for quickly floating on the water surface. The operation is simple and quick, and only simple manual operation is required to achieve rapid modification, which is safer. The floating device has high strength, is safer and more stable, and enables people to perform timely and reliable self-rescue through quick actions at the first time of distress and float safely on the water surface for a long time; the accommodating cavity 110 inside the seat back 100 is used to store the movable plate 200, and the seat back 100 is supported by the movable plate 200, which does not occupy additional space during daily use and does not affect the strength of the seat; when falling into the water and in distress The movable plate 200 can be quickly pulled out to form an extension of the seat back 100 to assist in supporting the human body and provide buoyancy. By utilizing the linkage between the movable plate 200 and the sealing switch 310 of the storage tank 300, when the movable plate 200 is pulled, the sealing switch 310 will be driven to quickly open the storage tank 300, and the polyurethane foaming agent inside it will be quickly released into the accommodating cavity 110 formed after the movable plate 200 is pulled out. After solidification and filling the entire cavity, the seat back 100 is supported and provided with buoyancy, so that people in the water can quickly float to the surface of the water under the action of the seat back 100 and the movable plate 200, and can float on the water for a long time to safely wait for rescue.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

[0060] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0061] References throughout this specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and illustrated herein may be possible in light of the teachings herein and are to be considered part of the spirit and scope of the invention.

[0062] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0063] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.

[0064] As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on" unless otherwise indicated.

[0065] The above description of the illustrated embodiments of the present invention (including the contents described in the Abstract) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and appreciated by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.

[0066] Systems and methods have been generally described herein as details that aid in understanding the present invention. In addition, various specific details have been given to provide an overall understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that embodiments of the present invention may be practiced without one or more of the specific details, or may be practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of embodiments of the present invention.

[0067] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the proposed invention. Thus, many modifications may be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention will be determined solely by the appended claims.

Claims

1. A seat back emergency flotation device, characterized in that: include: A seat backrest is detachably connected to the seat and has an accommodating cavity with an opening formed therein; A movable plate is disposed in the accommodating cavity and can move toward the opening direction under the action of a pulling force; A storage tank is fixed to one end of the seat back away from the movable plate and communicated with the accommodating cavity, wherein a foaming agent is contained in the storage tank and a sealing switch is provided on the storage tank, wherein the sealing switch is connected to the movable plate; The movable plate and the foaming agent are buoyant materials. When the movable plate moves toward the opening direction, the sealing switch is driven to operate and the storage tank is opened, and the foaming agent is released into the accommodating cavity and fills the accommodating cavity.

2. The seat back emergency flotation device according to claim 1, characterized in that: A slide rail is also provided in the accommodating cavity, and the movable plate is connected to the seat back through the slide rail.

3. The seat back emergency flotation device according to claim 2, characterized in that: The slide rails are arranged along the height direction of the seat back, are symmetrically distributed in the accommodating cavity, and are connected to the movable plate.

4. The seat back emergency flotation device according to claim 3, characterized in that: The slide rails are arranged at both sides and the center of the accommodating cavity and are connected to the movable plate.

5. The seat back emergency flotation device according to claim 1, characterized in that: The movable plate is an EVA plate.

6. The seat back emergency flotation device according to claim 1, characterized in that: The foaming agent is a polyurethane foaming agent.

7. The seat back emergency flotation device according to claim 1, characterized in that: The storage tank comprises a tank body and an opening, and one end of the opening away from the tank body is connected with a conduit and a nozzle.

8. The seat back emergency flotation device according to claim 7, characterized in that: The sealed switch is disposed in the storage tank, and the sealed switch comprises: A first movable member is arranged along the axial direction of the opening, one end of which is located in the tank body and the other end of which is located in the opening, and a hollow chamber is formed inside the first movable member; an elastic member, which is arranged at the connection end between the opening and the tank body, one end of the elastic member is fixed to the storage tank, and the other end is fixed to the first movable member, and the elastic member is compressed when the storage tank is in a closed state; a second movable member, which is arranged along the radial direction of the opening, and when the storage tank is in a closed state, a side surface of the second movable member abuts against an end of the first movable member to seal the tank body; One end of the second movable member is connected to the movable plate. When the movable plate moves toward the opening, the second movable member is pulled to separate from the first movable member, and the elastic force of the elastic member is released, driving the first movable member to move toward the opening away from the end of the tank body and communicate with the conduit.

9. The seat back emergency flotation device according to claim 8, characterized in that: A through hole is axially provided in the first movable member, the through hole forming the hollow chamber, and at both ends of the first movable member, the diameter of the through hole gradually increases toward the end.

10. The seat back emergency flotation device according to claim 9, characterized in that: At one end close to the tank body, a spherical cavity is formed outwardly from the through hole, and two spherical cavities are distributed along the axial direction of the first movable member.

Images