Water-flooded automatic lifesaving airbag system for bedridden elderly

Abstract

The present application relates to life-saving equipment field, especially to a kind of water submersion automatic lifesaving airbag system for bedridden old people, including bedplate, airbag body and bed frame, airbag body is arranged between bedplate and bed frame, and butt joint rod is arranged at the bottom of bedplate four corners, and support leg corresponding with butt joint rod is fixed in bed frame, butt joint rod passes through airbag body and is connected with support leg, airbag body includes fixedly arranged in the fixed part of bedplate, and the first side part is integrally connected on the front and rear sides of fixed part, and the second side part is integrally connected on the left and right sides of fixed part.The bedplate of the present application can be automatically separated from the bed frame when the airbag body is inflated and expanded, and the bedplate is wrapped with the folded airbag body, which can provide good protection for the old people on the bedplate who have difficulty in moving, greatly improving the practicability and safety of lifesaving airbag system in water disaster.

Description

Technical Field

[0001] This invention relates to the field of lifesaving equipment technology, and in particular to an automatic water-flood rescue airbag system for bedridden elderly people. Background Technology

[0002] There are generally three types of common lifesaving equipment: water lifesaving equipment, land lifesaving equipment, and air lifesaving equipment. Commonly used water lifesaving equipment includes life-saving airbags and lifeboats.

[0003] Most existing rescue airbags are circular or U-shaped, designed to allow the person to float on the water's surface when worn. However, for bedridden elderly people with limited mobility, it is difficult for them to actively cooperate in putting on the rescue airbag. Furthermore, their physical condition is not suitable for prolonged immersion in water, and there is even a risk of collision with debris while floating. Therefore, current rescue airbags are not well-suited for flood rescue of bedridden elderly people. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic water-flood rescue airbag system for bedridden elderly people, aiming to solve the above-mentioned technical problems.

[0005] The objective of this invention can be achieved through the following technical solutions: An automatic flood-rescue airbag system for bedridden elderly includes a bed board, an airbag body, and a bed frame. The airbag body is disposed between the bed board and the bed frame. Connecting rods are distributed at the four corners of the bottom of the bed board. Support legs corresponding to the connecting rods are fixed inside the bed frame. The connecting rods pass through the airbag body and engage with the support legs. The airbag body includes a fixing part fixed to the bottom of the bed board. The front and rear sides of the fixing part are integrally connected to a first side part, and the left and right sides of the fixing part are integrally connected to a second side part. The two ends of the first side part and the adjacent second side part are smoothly connected and transitioned through elastic corrugated parts. A collar is fixed to the bottom of the fixing part. The collar is movably sleeved on the outside of the connecting rods. A trigger for inflating the airbag body is fixed on the inner wall of the first side part. The collar slides along the axial direction of the connecting rod as the fixing part inflates and expands until the collar drives the connecting rod to disengage from the support legs, and simultaneously drives the first and second side parts to flip and surround the edge of the bed board to form a "floating boat" structure.

[0006] The support leg has an internal mounting cavity. A locking post is inserted through the top of the support leg. The bottom of the locking post is installed at the bottom of the mounting cavity via a water-soluble pad. Locking blocks are evenly and movably installed on the outer wall of the locking post. A locking spring is provided between the back of the locking block and the locking post. The outer wall of the connecting rod has slots that correspond one-to-one with the locking blocks. The top of the locking post is inserted into the connecting rod and forms a locking engagement with the locking blocks and slots.

[0007] The outer wall of the collar is uniformly provided with elastic plates, and the inner side of the elastic plate is integrally provided with a locking block that matches the locking groove. When the locking block passes through the locking groove, it forms a locking engagement with the locking groove under the elastic force of the elastic plate, and pushes the locking block back into the locking post.

[0008] A pressure block is movably installed at the top of the connecting rod, and a compression spring is provided between the top of the pressure block and the connecting rod. The pressure block abuts against the top of the locking post.

[0009] The outer wall of the support leg is provided with a sliding cylinder extending towards the adjacent first and second sides. A push rod is axially slidably installed inside the sliding cylinder. The first end of the push rod passes through the sliding cylinder and is fixed to a push plate. A thrust spring is provided between the end of the push rod and the sliding cylinder. A limiting pin is provided on the sliding cylinder to limit and block the push rod. The bottom of the locking column is connected to the limiting pin by a pull rope.

[0010] A water passage opening is provided through the side wall of the mounting cavity, and a moisture-absorbing pad is provided inside the water passage opening.

[0011] The trigger includes a base, one end of which is screwed with a gas cylinder, and the other end of which is screwed with a pressure cap. A movable column is movably installed inside the pressure cap, and the pressure cap presses the water-soluble baffle against the base through the movable column. A cavity is provided inside the base, and the gas cylinder communicates with the cavity. An air inlet channel is provided on one side of the base, and both ends of the air inlet channel are respectively connected to the cavity and the first side portion. A check valve is provided inside the air inlet channel.

[0012] The pressure cap has a movable cavity, the inner wall of the movable cavity has a limiting groove, the outer wall of the movable column has a limiting strip, the limiting strip is slidably installed in the limiting groove, the first end of the movable column has a top block, the top block abuts against the water-soluble baffle, and the tail end of the movable column is provided with a first top spring between the movable column and the movable cavity.

[0013] A pin is provided inside the cavity of the base. The two ends of the pin are a sharp end that aligns with the gas cylinder and a contact end that aligns with the movable column. A sealing ring is provided at the connection between the contact end and the base. A second top spring is provided between the pin and the base to keep the sharp end away from the gas cylinder. The elastic coefficient of the first top spring is greater than that of the second top spring.

[0014] Both the pressure cap and the movable column are provided with through holes, which allow water to circulate so that the water-soluble baffles dissolve when they come into contact with water.

[0015] The beneficial effects of this invention are as follows: By setting up a bed board, an airbag body, and a bed frame, under normal conditions, the bed board is locked to the support legs on the bed frame via connecting rods to form a stable support. At this time, the airbag body contracts and folds downward to expose the bed board, ensuring that the elderly can use it for normal care. When a flood occurs and the bed frame is submerged, the trigger will be able to inflate the airbag body in time. When the airbag body inflates, the bed board can automatically detach from the bed frame, allowing the bed board to float independently without the weight of the bed frame. Furthermore, the folded airbag body wraps around the bed board, providing good protection for elderly people with limited mobility on the bed board, greatly improving the practicality and safety of the rescue airbag system in flood emergencies. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the full cross-section of the present invention.

[0019] Figure 3 This is a schematic diagram of the bed frame structure in this invention.

[0020] Figure 4 This is a schematic diagram of the structure of the airbag body in this invention.

[0021] Figure 5 This is a bottom view of the airbag body in this invention.

[0022] Figure 6 This is a schematic diagram of the collar structure in this invention.

[0023] Figure 7 This is a schematic diagram of the structure when the bed board and bed frame are connected in this invention.

[0024] Figure 8 This is a schematic diagram of the locking pin structure in this invention.

[0025] Figure 9 This is a schematic diagram of the structure when the bed board is detached from the bed frame in this invention.

[0026] Figure 10 This is a schematic diagram of the structure of the airbag body after it has been flipped over in this invention.

[0027] Figure 11 This is a schematic diagram of the trigger structure in this invention.

[0028] Figure 12 This is a schematic diagram of the structure of the pressure cap and the movable column in this invention.

[0029] Figure 13This is a schematic diagram of the internal structure of the trigger in this invention.

[0030] In the picture: 100. Bed board; 110. Connecting rod; 111. Slot; 112. Pressure block; 113. Compression spring; 200. Airbag body; 210. Fixing part; 220. First side part; 230. Second side part; 240. Elastic corrugated part; 250. Collar; 251. Elastic plate; 252. Locking block; 300. Bed frame; 310. Support leg; 311. Mounting cavity; 312. Moisture-absorbing pad; 320. Locking post; 321. Locking block; 322. Locking spring; 323. Pull rope; 330. Slide cylinder; 331. Push rod; 332. Push plate; 333. Thrust spring; 334. Limit pin; 340. Water-soluble pad; 400, Trigger; 410, Base; 411, Air Inlet; 420, Gas Cylinder; 430, Pressure Cap; 431, Movable Chamber; 432, Limiting Groove; 440, Movable Column; 441, First Top Spring; 442, Limiting Strip; 443, Top Block; 450, Water-soluble Stop Block; 460, Top Pin; 461, Second Top Spring; 462, Sealing Ring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-5As shown, this invention is an automatic flood rescue airbag system for bedridden elderly, including a bed board 100, an airbag body 200, and a bed frame 300. The airbag body 200 is disposed between the bed board 100 and the bed frame 300. Connecting rods 110 are distributed at the four corners of the bottom of the bed board 100. Support legs 310 corresponding to the connecting rods 110 are fixed inside the bed frame 300. The connecting rods 110 pass through the airbag body 200 and engage with the support legs 310. The airbag body 200 includes a fixing part 210 fixed to the bottom of the bed board 100. A first side part 220 is integrally connected to the front and rear sides of the fixing part 210, and a second side part 220 is integrally connected to the left and right sides of the fixing part 210. The two ends of the first side 220 and the adjacent second side 230 are smoothly connected and transitioned by the elastic corrugated part 240. The bottom end of the fixing part 210 is fixed with a collar 250. The collar 250 is movably sleeved on the outside of the docking rod 110. The inner wall of the first side 220 is fixed with a trigger 400 for inflating the airbag body 200. As the fixing part 210 is inflated, the collar 250 slides along the axis of the docking rod 110 until the collar 250 drives the docking rod 110 to disengage from the support leg 310, and at the same time drives the first side 220 and the second side 230 to flip and surround the edge of the bed board 100 to form a "floating boat" structure.

[0033] Specifically, by setting up a bed board 100, an airbag body 200, and a bed frame 300, under normal conditions, the bed board 100 is locked to the support legs 310 on the bed frame 300 via the connecting rod 110 to form a stable support. At this time, the airbag body 200 contracts and folds downward to expose the bed board 100, ensuring that the elderly can use it for normal care. When a flood occurs and the bed frame 300 is submerged, the trigger 400 will be able to inflate the airbag body 200 in time. The rapidly expanding airbag body 200 will drive the collar 250 to move downward along the connecting rod 110 and drive the connecting rod 110 to disengage from the support legs 310. At the same time, it will push the first side 220 and the second side 230 to fold upward and surround the edge of the bed board 100 to form a "floating boat" structure to help the elderly escape danger. During this process, the bed board 100 can automatically detach from the bed frame 300 when the airbag body 200 is inflated, allowing the bed board 100 to float independently without the weight of the bed frame 300. Furthermore, the folded airbag body 200 can wrap around the bed board 100, providing good protection for elderly people with limited mobility on the bed board 100, and greatly improving the practicality and safety of the rescue airbag system in flood emergencies.

[0034] In this embodiment, the airbag body 200 uses a high-strength nylon base fabric as its skeleton and is laminated with a thermoplastic polyurethane (TPU) film or coating through a special process. The nylon base fabric has high tear resistance and puncture resistance, with a burst strength exceeding 15 MPa, effectively resisting the impact of sharp objects underwater. The TPU coating has excellent airtightness, ensuring that gas can be retained for a long time, and the buoyancy loss can be controlled within 5% within 24 hours.

[0035] It should be noted that the sidewalls of the first side portion 220 or the second side portion 230 of this application are also equipped with specialized rescue tools, such as rescue whistles and rescue flashlights, and reflective stickers are also affixed to facilitate timely detection and rescue by rescue personnel. The above-mentioned structural components are widely used in the field of lifesaving and are known in the prior art; their specific structural connections will not be described in detail here.

[0036] like Figure 7 and Figure 8 As shown, the support leg 310 has an installation cavity 311 inside. A locking post 320 is provided through the top of the support leg 310. The bottom end of the locking post 320 is installed at the bottom of the installation cavity 311 through a water-soluble pad 340. Locking blocks 321 are evenly and movably installed on the outer wall of the locking post 320. A locking spring 322 is provided between the back of the locking block 321 and the locking post 320. A slot 111 corresponding to the locking block 321 is provided through the outer wall of the connecting rod 110. The top of the locking post 320 is inserted into the connecting rod 110 and forms a locking engagement with the slot 111 through the locking block 321.

[0037] Specifically, the water-soluble pad 340 uses water-soluble polymer materials (such as polyvinyl alcohol PVA, polyethylene glycol PEG, and polyvinylpyrrolidone PVP) as the matrix and is manufactured through a pressing process. In its dry state, it possesses good hardness and strength, thus providing stable support for the locking post 320. Under normal conditions, the bottom end of the locking post 320 is supported and fixed by the water-soluble pad 340, while its top end is inserted into the corresponding connecting rod 110. Simultaneously, the locking block 321, under the action of the locking spring 322, forms a locking engagement with the slot 111, thereby positioning and locking the bed board 100 and the bed frame 300. This ensures that the bed frame 300 provides good support for the bed board 100, guaranteeing normal nursing use.

[0038] like Figures 5-9 As shown, elastic plates 251 are evenly arranged on the outer wall of the collar 250. A locking block 252 adapted to the locking groove 111 is integrally arranged on the inner side of the elastic plate 251. When the locking block 252 passes through the locking groove 111, it forms a locking engagement with the locking groove 111 under the elastic force of the elastic plate 251, and pushes the locking block 321 back into the locking post 320.

[0039] Furthermore, a pressure block 112 is movably provided at the top of the docking rod 110, and a compression spring 113 is provided between the top of the pressure block 112 and the docking rod 110. The pressure block 112 abuts against the top of the locking post 320.

[0040] Specifically, in the event of a flood, trigger 400 is activated to inflate the airbag body 200. The inflated airbag body 200 then moves the collar 250 downwards until the locking block 252 passes the slot 111. At this point, the locking block 252, which was originally against the outer wall of the connecting rod 110, is instantly locked into the slot 111 by the elastic force of the elastic plate 251. The locking block 321, pushed by the locking block 252, retracts into the locking pin 320, thus releasing the vertical connection between the locking pin 320 and the connecting rod 110. At the same time, the water-soluble pad 340 in the mounting cavity 311 dissolves in water, and the locking column 320 loses its bottom support. The top of the locking column 320 is subjected to the pressure of the pressure block 112, which allows the locking column 320 to retract into the mounting cavity 311. At this time, the lateral locking limit between the locking column 320 and the connecting rod 110 is released, and the bed board 100 can be completely separated from the bed frame 300, which greatly reduces the load and allows the bed board 100 to float and move independently, improving the convenience of rescue.

[0041] like Figure 4 , Figures 7-10 As shown, a slide cylinder 330 extends from the outer wall of the support leg 310 toward the adjacent first side 220 and second side 230. A push rod 331 is axially slidably installed inside the slide cylinder 330. The first end of the push rod 331 passes through the slide cylinder 330 and is fixed to a push plate 332. A thrust spring 333 is provided between the end of the push rod 331 and the slide cylinder 330. A limiting pin 334 is provided on the slide cylinder 330 to limit and block the push rod 331. The bottom of the locking column 320 is connected to the limiting pin 334 by a pull rope 323.

[0042] Specifically, under normal conditions, the water-soluble pad 340 maintains its supporting function for the locking pin 320. At this time, the limiting pin 334 will be stuck in the slide cylinder 330 to limit and block the push rod 331. At the same time, the thrust spring 333 is compressed and stores energy. When the water-soluble pad 340 dissolves in water and loses its supporting function for the locking pin 320, the locking pin 320 will retract into the mounting cavity 311 under the action of the pressure block 112. At this time, during the descent, the locking pin 320 will pull the limiting pin 334 out of the slide cylinder 330 through the pull rope 323, so that it releases its limiting function for the push rod 331. The push rod 331 will pop outward under the action of the thrust spring 333 and apply a thrust to the first side 220 and the second side 230 respectively through the push plate 332. Since the first side 220 and the second side 230 are connected by the elastic corrugated part 240, which has a certain degree of stretchability, the first side 220 and the second side 230 can be flipped upwards when pushed, and automatically reshaped by the elastic corrugated part 240 after flipping. Thus, the first side 220 and the second side 230, together with the bottom fixing part 210, can surround and wrap the bed board 100, preventing water from flooding the bed board 100, and providing a good safety protection effect for elderly people with limited mobility.

[0043] like Figure 7 As shown, a water passage is provided through the side wall of the mounting cavity 311, and a moisture-absorbing pad 312 is placed inside the water passage. Under normal conditions, the moisture-absorbing pad 312 can effectively absorb moisture from the humid air, keeping the inside of the mounting cavity 311 dry and preventing the water-soluble pad 340 from becoming damp and dissolving. In the event of a flood, water will completely submerge the moisture-absorbing pad 312, and the water will flow smoothly into the mounting cavity 311 through the water passage, allowing the water-soluble pad 340 to dissolve smoothly.

[0044] like Figure 11-13 As shown, the trigger 400 includes a base 410, with a gas cylinder 420 screwed to one end of the base 410 and a pressure cap 430 screwed to the other end of the base 410. A movable column 440 is movably installed inside the pressure cap 430. The pressure cap 430 presses the water-soluble baffle 450 against the base 410 through the movable column 440. A cavity is provided inside the base 410, and the gas cylinder 420 is connected to the cavity. An air inlet channel 411 is provided on one side of the base 410. The two ends of the air inlet channel 411 are connected to the cavity and the first side part 220, respectively. A check valve is provided inside the air inlet channel 411.

[0045] The water-soluble baffle 450 and water-soluble pad 340 are similarly made of water-soluble polymer material. Their function is to block and limit the movement of the movable column 440. When the water-soluble baffle 450 dissolves in water, the movable column 440 moves accordingly to open the gas cylinder 420, thus achieving automatic inflation triggered by water. Both the pressure cap 430 and the gas cylinder 420 are connected to the base 410 by threaded detachable connections, facilitating periodic replacement of the water-soluble baffle 450 and gas cylinder 420 inside the pressure cap 430 and preventing functional failure due to long-term spare parts.

[0046] Furthermore, the pressure cap 430 is provided with a movable cavity 431, the inner wall of the movable cavity 431 is provided with a limiting groove 432, the outer wall of the movable column 440 is provided with a limiting strip 442, the limiting strip 442 is slidably installed in the limiting groove 432, the first end of the movable column 440 is provided with a top block 443, the top block 443 abuts against the water-soluble baffle, and a first top spring 441 is provided between the tail end of the movable column 440 and the movable cavity 431.

[0047] Furthermore, a pin 460 is provided inside the cavity of the base 410. The two ends of the pin 460 are a sharp end that aligns with the gas cylinder 420 and a contact end that aligns with the movable column 440, respectively. A sealing ring 462 is provided at the connection between the contact end and the base 410. A second spring 461 is provided between the pin 460 and the base 410 to keep the sharp end away from the gas cylinder 420. The elastic coefficient of the first spring 441 is greater than that of the second spring 461.

[0048] Furthermore, both the pressure cap 430 and the movable column 440 are provided with through channels for water to circulate so that the water-soluble baffle 450 dissolves when it comes into contact with water.

[0049] Specifically, by setting the trigger 400, under normal conditions, the top block 443 presses against the water-soluble baffle to limit the movement and prevent the top block 443 from accidentally touching the ejector pin 460. At this time, the first top spring 441 is compressed and stores energy, while the ejector pin 460 moves away from the gas cylinder 420 under the elastic force of the second top spring 461, thus preventing the ejector pin 460 from accidentally touching the gas cylinder 420. In the event of a flood, water will flow into the base 410 through the channels of the pressure cap 430 and the movable column 440. The water-soluble baffle 450 dissolves upon contact with water to release its limiting effect on the movable column 440. At this time, the movable column 440 will be ejected under the elastic force of the first top spring 441 until the top block 443 abuts against the end of the top pin 460. Since the elastic coefficient of the first top spring 441 is greater than that of the second top spring 461, the second top spring 461 will be more easily compressed and deformed than the first spring. At this time, the top block 443 will push the top pin 460 to gradually approach the gas cylinder 420 until the sharp end of the top pin 460 punctures the gas cylinder 420. The high-pressure gas in the gas cylinder 420 will quickly inflate the airbag body 200 through the air inlet channel 411. Among them, the sealing ring 462 will effectively prevent water from entering the cavity of the base 410, while the check valve in the air intake channel 411 will further prevent water from entering, ensuring that the airbag body 200 is smoothly inflated.

[0050] The working principle of this invention is as follows: (See 1-) Figure 13As shown, under normal conditions, the bottom of the locking post 320 is supported and fixed by the water-soluble pad 340, while its top end is inserted into the corresponding docking rod 110. At the same time, the locking block 321 forms a locking engagement with the slot 111 under the action of the locking spring 322, thereby positioning and locking the bed board 100 and the bed frame 300, so that the bed frame 300 provides good support for the bed board 100 and ensures normal nursing use. In the event of a flood, water will flow into the base 410 through the channels of the pressure cap 430 and the movable column 440. The water-soluble baffle 450 dissolves in water to release the limiting effect on the movable column 440. At this time, the movable column 440 will be ejected under the elastic force of the first top spring 441 until the top block 443 abuts against the end of the top pin 460. Then, the top block 443 will push the top pin 460 to gradually approach the gas cylinder 420 until the sharp end of the top pin 460 punctures the gas cylinder 420. The high-pressure gas in the gas cylinder 420 will quickly inflate the airbag body 200 through the air inlet channel 411. The inflated airbag body 200 will move the collar 250 downwards until the locking block 252 passes through the slot 111. At this time, the locking block 252, which was originally against the outer wall of the docking rod 110, will be instantly locked into the slot 111 under the elastic force of the elastic plate 251. The locking block 321 will be pushed back into the locking pin 320 by the locking block 252. At the same time, the top of the locking pin 320 will be subjected to the pressure of the pressure block 112, so that the locking pin 320 as a whole can be pushed back into the mounting cavity 311. At this time, the bed board 100 can be completely separated from the bed frame 300, greatly reducing the load and allowing the bed board 100 to float and move independently. During descent, the locking pin 320 pulls the limiting pin 334 away from the slide cylinder 330 via the pull rope 323, releasing its limiting effect on the push rod 331. The push rod 331 then springs outward under the action of the thrust spring 333 and applies a pushing force to the first side 220 and the second side 230 via the push plate 332. Since the first side 220 and the second side 230 are connected by an elastic corrugated part 240, which has a certain degree of extensibility, the first side 220 and the second side 230 can flip upward after being pushed. After flipping, they are automatically shaped again by the elastic corrugated part 240. This allows the first side 220 and the second side 230, together with the fixing part 210 at the bottom, to surround and wrap around the bed board 100, preventing water from flooding the bed board 100 and providing good safety protection for elderly people with limited mobility.

[0051] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An automatic water-flood rescue airbag system for bedridden elderly, comprising a bed board (100), an airbag body (200), and a bed frame (300), characterized in that, The airbag body (200) is disposed between the bed board (100) and the bed frame (300). Connecting rods (110) are distributed at the four corners of the bottom of the bed board (100). Support legs (310) corresponding to the connecting rods (110) are fixed inside the bed frame (300). The connecting rods (110) pass through the airbag body (200) and engage with the support legs (310). The airbag body (200) includes a fixing part (210) fixed to the bottom of the bed board (100). A first side part (220) is integrally connected to the front and rear sides of the fixing part (210), and a second side part (230) is integrally connected to the left and right sides of the fixing part (210). The two ends of the first side part (220) are connected to the adjacent second side part (230). The two sides (230) are smoothly connected and transitioned by the elastic corrugated part (240). The bottom end of the fixed part (210) is fixed with a collar (250). The collar (250) is movably sleeved on the outside of the docking rod (110). The inner wall of the first side (220) is fixed with a trigger (400) for inflating the airbag body (200). The collar (250) slides along the axial direction of the docking rod (110) as the fixed part (210) is inflated and expanded until the collar (250) drives the docking rod (110) to disengage from the support leg (310) and simultaneously drives the first side (220) and the second side (230) to flip and surround the edge of the bed board (100) to form a "floating boat" structure.

2. The automatic water-flood rescue airbag system for bedridden elderly as described in claim 1, characterized in that, The support leg (310) has an installation cavity (311) inside. A locking post (320) is provided through the top of the support leg (310). The bottom end of the locking post (320) is installed at the bottom of the installation cavity (311) through a water-soluble pad (340). Locking blocks (321) are evenly and movably installed on the outer wall of the locking post (320). A locking spring (322) is provided between the back of the locking block (321) and the locking post (320). A slot (111) corresponding to the locking block (321) is provided through the outer wall of the connecting rod (110). The top of the locking post (320) is inserted into the connecting rod (110) and forms a snap-fit ​​engagement with the slot (111) through the locking block (321).

3. The automatic water-flood rescue airbag system for bedridden elderly as described in claim 2, characterized in that, The outer wall of the collar (250) is uniformly provided with elastic plates (251), and the inner side of the elastic plate (251) is integrally provided with a locking block (252) that is adapted to the locking groove (111). When the locking block (252) passes through the locking groove (111), it forms a locking engagement with the locking groove (111) under the elastic force of the elastic plate (251), and pushes the locking block (321) back into the locking post (320).

4. The automatic water-flood rescue airbag system for bedridden elderly as described in claim 3, characterized in that, A pressure block (112) is movably disposed at the top of the docking rod (110), and a compression spring (113) is disposed between the top of the pressure block (112) and the docking rod (110). The pressure block (112) abuts against the top of the locking post (320).

5. The automatic water-flood rescue airbag system for bedridden elderly as described in claim 4, characterized in that, The outer wall of the support leg (310) extends a slide cylinder (330) toward the adjacent first side (220) and second side (230). A push rod (331) is axially slidably installed inside the slide cylinder (330). The first end of the push rod (331) passes through the slide cylinder (330) and is fixedly connected to a push plate (332). A thrust spring (333) is provided between the end of the push rod (331) and the slide cylinder (330). A limiting pin (334) is provided on the slide cylinder (330) to limit and block the push rod (331). The bottom of the locking column (320) is connected to the limiting pin (334) by a pull rope (323).

6. The automatic water-flood rescue airbag system for bedridden elderly as described in claim 2, characterized in that, A water passage is provided through the side wall of the mounting cavity (311), and a moisture-absorbing pad (312) is provided inside the water passage.

7. The automatic water-flood rescue airbag system for bedridden elderly as described in claim 1, characterized in that, The trigger (400) includes a base (410), one end of which is screwed with a gas cylinder (420), and the other end of which is screwed with a pressure cap (430). A movable column (440) is movably installed inside the pressure cap (430). The pressure cap (430) presses the water-soluble baffle (450) against the base (410) through the movable column (440). A cavity is provided inside the base (410), and the gas cylinder (420) is connected to the cavity. An air inlet channel (411) is provided on one side of the base (410). Both ends of the air inlet channel (411) are connected to the cavity and the first side (220) respectively. A check valve is provided inside the air inlet channel (411).

8. The automatic water-flood rescue airbag system for bedridden elderly as described in claim 7, characterized in that, The pressure cap (430) is provided with a movable cavity (431), the inner wall of the movable cavity (431) is provided with a limiting groove (432), the outer wall of the movable column (440) is provided with a limiting strip (442), the limiting strip (442) is slidably installed in the limiting groove (432), the first end of the movable column (440) is provided with a top block (443), the top block (443) abuts against the water-soluble baffle, and a first top spring (441) is provided between the tail end of the movable column (440) and the movable cavity (431).

9. A water-flooding automatic rescue airbag system for bedridden elderly as described in claim 8, characterized in that, A pin (460) is provided in the cavity of the base (410). The two ends of the pin (460) are a sharp end that aligns with the gas cylinder (420) and a contact end that aligns with the movable column (440). A sealing ring (462) is provided at the connection between the contact end and the base (410). A second top spring (461) is provided between the pin (460) and the base (410) to keep the sharp end away from the gas cylinder (420). The elastic coefficient of the first top spring (441) is greater than that of the second top spring (461).

10. The automatic water-flood rescue airbag system for bedridden elderly according to claim 9, characterized in that, Both the pressure cap (430) and the movable column (440) are provided with through channels for water to flow through so that the water-soluble baffle (450) dissolves when it comes into contact with water.

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