Drowning self-rescue collar

Abstract

The purpose of this invention is to provide a drowning self-rescue collar, aiming to solve the problems of large size, heavy weight, and inconvenience of use of existing life-saving devices. This invention uses a high-pressure hose as a gas storage container. The high-pressure hose can be freely bent into an arc shape, and together with the arc-shaped air inlet valve, air outlet valve, and connector structure, it forms a ring-shaped main body. A flexible airbag is fitted onto the ring-shaped main body, and together with the arc-shaped connector mechanism, it forms a compact life-saving collar, realizing the miniaturization of the life-saving device. Using a high-pressure hose as a gas storage container is lighter than a metal gas storage container. At the same time, since the container required for using liquid gas is smaller, the life-saving collar is lightweight. This invention does not have any manual buttons. When in use, the drowning person only needs to pull any position of the self-rescue collar to activate the activation mechanism and quickly release the liquefied gas in the gas storage mechanism, thereby forming a ring-shaped life ring around the drowning person's neck.

Description

Technical Field

[0001] The invention relates to the technical field of lifesaving equipment, in particular to a drowning self-rescue collar. Background Art

[0002] Drowning deaths have always been a problem that people are concerned about and need to be solved, especially the high incidence of accidental drowning accidents among children and adolescents. For example, children accidentally fall into the water and drown when passing through natural waters without safety facilities, or accidentally fall into the water and drown when playing in the river. Traditional lifebuoys and life jackets are mainly used to prevent accidents when swimming or doing activities on the water. Due to their large size, they are not suitable for daily carrying and wearing. In order to prevent accidents before they happen, it is necessary to wear a small, lightweight and easy-to-use wearable life-saving device in daily life.

[0003] At present, a safety airbag called Ploota has appeared in Germany. It is a life-saving device that can be worn on the neck. Its principle is to provide a hollow annular shell, and two airbags made of folded non-elastic material are arranged inside the annular shell. The openings of the two airbags are connected to two small high-pressure gas cylinders arranged on the annular shell through a channel. A piercing needle is arranged in the channel to aim at the sealing port of the gas cylinder, and a manual button linked to the piercing needle is arranged outside the channel. When in use, the button is pressed to make the piercing needle pierce the sealing port of the gas cylinder to release gas, so that the folded airbags expand outward to form two annular inflatable airbags, thereby providing the buoyancy required for lifesaving.

[0004] The disadvantages of the above-mentioned product are: first, the airbag of the life-saving device is made of non-elastic material and needs to be folded and placed in an annular shell, which occupies the main structural space of the life-saving device. At the same time, the high-pressure gas cylinder used in the life-saving device cannot be placed in the annular shell due to shape and volume restrictions, which limits the further miniaturization of the life-saving device and causes the life-saving device to be large in size; second, two high-pressure gas cylinders are used as gas storage containers, and the weight factor of the gas cylinders limits the further lightweighting of the life-saving device; third, in the struggling state during the drowning process, it is difficult for the drowning person to touch the manual button quickly and accurately, affecting the effective implementation of the self-rescue behavior. Due to the inconvenience in use, it is easy to miss the best time for self-rescue. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a drowning self-rescue collar, aiming to solve the problems of the existing life-saving devices being large in size, heavy in weight and inconvenient in use.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A drowning self-rescue collar, comprising an arc-shaped gas storage mechanism, the gas storage mechanism consisting of a high-pressure hose, an air inlet valve and an air outlet valve, the high-pressure hose can be freely bent into an arc, the air inlet valve and the air outlet valve are also arc-shaped and are respectively connected and fixed at both ends of the high-pressure hose, and the gas storage mechanism is filled with a liquefied gas;

[0008] The drowning self-rescue collar also includes:

[0009] The joint mechanism is configured to be arc-shaped, and includes a bidirectional female joint and two unidirectional male joints. The two arc-shaped unidirectional male joints can be detachably connected to the arc-shaped bidirectional female joints. The two unidirectional male joints are respectively a large male joint and a small large male joint. The large male joint is connected to the outlet valve of the gas storage mechanism, and the small large male joint is in contact with the inlet valve of the gas storage mechanism but is not connected thereto.

[0010] The excitation mechanism includes a pull wire, a slider and an excitation chamber, one end of the pull wire is fixed to the slider, and the other end is fixed to a small male connector, the slider is located in an excitation chamber adapted thereto, and the excitation chamber is located in a large male connector;

[0011] A spring ring, wherein the spring ring is sleeved on the gas storage mechanism, and two ends of the spring ring are respectively fixed on the large male connector and the small male connector;

[0012] A flexible airbag, which is a strip-shaped plastic spherical body with telescopic expansion characteristics, including an open end and a closed end. The flexible airbag is sleeved on the spring coil through its open end and completely wraps the large male connector and the small male connector;

[0013] Furthermore, the outlet valve comprises a valve body, a valve needle, a plugging piece, a spring, a retaining spring, a sealing ring, and a sealing gasket. The valve body, the valve needle and the plugging piece are all arc-shaped. The plugging piece is fixed in the valve body by the sealing ring and the retaining spring. The valve needle seals the central hole of the plugging piece by the elastic force of the sealing gasket and the spring. The main body of the valve needle extends outward from the valve body. Pressing the valve needle can put the valve body in a flow state.

[0014] Further, the gas outlet valve comprises a valve body, a valve needle, a plugging piece, a spring, a retaining spring, a sealing ring, and a sealing gasket, wherein the valve body, the spring, the plugging piece and the valve needle are arc-shaped and adapted to each other, the plugging piece is fixed in the valve body by the sealing ring and the retaining spring, the valve needle seals the central hole of the plugging piece by the spring and the sealing gasket, the valve needle extends outward from the valve body and is fixed on the slider, and the gas outlet valve can release gas by pressing the valve needle;

[0015] Further, the intake valve comprises a valve body, a valve needle, a spring, a retaining spring, and a sealing ring, wherein the valve body, the valve needle, and the spring are arc-shaped and adapted to each other, one end of the spring presses against the retaining spring, and the other end presses against the valve needle, and the valve needle seals the opening of the valve body through the spring and the sealing ring;

[0016] Furthermore, the air outlet valve is provided with a protrusion for connecting to a large male connector, and the large male connector is provided with a groove adapted to the protrusion, and the air outlet valve and the large male connector are connected and fixed by an elastic clip.

[0017] Optionally, the liquefied gas in the gas storage mechanism is a non-toxic and non-flammable liquefied gas.

[0018] Optionally, the flexible airbag is a strip-shaped latex balloon.

[0019] Optionally, the pull wire is a soft nylon wire.

[0020] Optionally, the spring coil is a thinner stainless steel spring.

[0021] Beneficial effects: The drowning self-rescue collar of the present invention uses a high-pressure hose as a gas storage container. The high-pressure hose can be freely bent into an arc shape, and then cooperates with an arc-shaped air inlet valve, an air outlet valve and a joint structure to form an annular main body. The flexible air bag is sleeved on the annular main body, and a compact life-saving collar is formed in cooperation with the arc-shaped joint mechanism, thereby realizing the miniaturization of the life-saving device; using a high-pressure hose as a gas storage container is lighter than a metal gas storage container, and at the same time, the volume of the container required for the use of liquid gas is smaller, thereby realizing the lightweight of the life-saving collar; the present invention does not provide any manual button. When in use, the drowning person only needs to pull any position of the self-rescue collar by hand to make the excitation mechanism take effect and quickly release the liquefied gas in the gas storage mechanism, thereby forming an annular lifebuoy sleeved on the neck of the drowning person. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the decomposition of each mechanism of the present invention

[0023] Figure 2 Schematic diagram of partial mechanism decomposition of the present invention

[0024] Figure 3 Schematic diagram of the unconnected state of the present invention

[0025] Figure 4 Schematic diagram of the connection status of the present invention

[0026] Figure 5 Schematic diagram of the decomposition of the gas storage mechanism of the present invention

[0027] Figure 6 Schematic diagram of the internal structure of the gas outlet valve of the present invention

[0028] Figure 7 Schematic diagram of the internal decomposition of the gas outlet valve of the present invention

[0029] Figure 8 Schematic diagram of the internal structure of the intake valve of the present invention

[0030] Fig. 9 Schematic diagram of the internal decomposition of the intake valve of the present invention

[0031] Fig.10 The internal schematic diagram of the connection state of the joint mechanism of the present invention

[0032] Fig.11 Schematic diagram of the joint mechanism of the present invention in the separated state

[0033] Fig.12 for Figure 2 Enlarged schematic diagram of point A in the middle

[0034] Fig.13 Schematic diagram of the connection between the large male connector and the air outlet valve of the present invention

[0035] Fig.14 Schematic diagram of the exploded view of the connection between the large male connector and the outlet valve of the present invention

[0036] Fig.15 Schematic diagram of the excitation mechanism of the present invention

[0037] Fig.16 Schematic diagram of the flexible airbag inflated state of the present invention

[0038] In the figure: 1-gas storage mechanism, 11-high pressure hose, 12-air outlet valve, 121-valve body, 122-spring, 123-blocking piece, 124-sealing ring, 125-valve needle, 126-sealing pad, 127-circlip, 1211-connecting end, 1212-stop ring, 1213-valve airway, 1214-valve small chamber, 1215-valve middle chamber, 1216-valve large chamber, 1217-protrusion, 1218-groove, 1219-circlip groove, 1220-arc channel, 1221-small notch, 1231-blocking piece head, 1251-valve needle head, 1252-valve needle groove, 13-inlet valve, 131-valve body, 132-spring, 133-valve needle, 134-seal Sealing ring, 135-circlip, 1311-connecting end, 1312-stop ring, 1313-slide, 1314 valve hole, 1315-circlip groove, 1331-large ring convex, 1332-middle ring convex, 1333-small ring convex, 1334-valve needle air hole, 14-pipe sleeve, 15-pipe sleeve, 2-connector mechanism, 21-two-way female connector, 22-large male connector, 23-small male connector, 24-clip, 211-valve tooth, 212-valve chamber, 221-mushroom head, 222-spring fixing hole, 223-top, 224-excitation chamber, 225-notch, 226-groove, 227-small square hole, 231-mushroom head, 232-spring fixing hole, 233-wire fixing hole, 234-top, 241-clip hook, 3-excitation mechanism, 31-slider, 311-slider protrusion, 312-cap hole, 313-small hole, 32-pull wire, 4-spring coil, 5-flexible airbag. DETAILED DESCRIPTION

[0039] Please refer to Figure 1 and Figure 2 The present invention provides a drowning self-rescue collar, comprising an air storage mechanism 1 that can be bent into an arc shape, an arc-shaped joint mechanism 2 that can be detachably connected, an excitation mechanism 3 that can excite the air storage mechanism 1 to release gas, and a spring coil 4 that can be freely bent and a strip-shaped flexible air bag 5, wherein the joint mechanism 2 comprises a detachably connected two-way female joint 21, a large male joint 22 and a small male joint 23, one end of the air storage mechanism 1 is connected to the large male joint 22 of the joint mechanism 2, and the other end of the air storage mechanism 1 is in contact with the small male joint 23 of the joint mechanism 2 but not connected, the excitation mechanism 3 is arranged between the air storage mechanism 1 and the joint mechanism 2 and is located inside the spring coil 4, the spring coil 4 is sleeved on the air storage mechanism 1, and the flexible air bag 5 is sleeved on the spring coil 4. Since each part of the mechanism is flexible and bendable or is itself arc-shaped, the drowning self-rescue collar of the present invention presents a ring shape when the joint mechanism 2 is in a connected state.

[0040] Reference Figure 3 and Figure 4Furthermore, the spring coil 4 is a lightweight spring body that is not easily oxidized, preferably a stainless steel spring with a thinner wire diameter. The spring coil 4 is used to constrain the high-pressure hose to achieve a more regular ring shape in a bent state, and at the same time can protect the high-pressure hose from external force extrusion. The flexible airbag 5 is a strip-shaped plastic balloon body with telescopic expansion characteristics, preferably a strip-shaped latex balloon made of latex material. The flexible airbag 5 includes an open end and a closed end. The flexible airbag 5 is sleeved on the spring coil 4 through its open end and wraps the large male connector 22 and the small male connector 23. The open end of the flexible airbag 5 is sealed by knotting itself or tightening it with a thinner rope to form a closed airbag containing various mechanism components. The large male connector 22 and the small male connector 23 wrapped by the flexible airbag 5 are respectively connected to the two-way female connector 21 to form an annular life-saving collar.

[0041] Reference Figure 5 , Figure 5 1 is a schematic diagram of an exploded view of the gas storage mechanism of the present invention, wherein the gas storage mechanism 1 comprises a high-pressure hose 11, an air outlet valve 12, an air inlet valve 13, a pipe sleeve 14 and a pipe sleeve 15, wherein the air outlet valve 12 and the air inlet valve 13 are arc-shaped, the air outlet valve 12 is provided with a connecting end 1211, the air inlet valve 13 is provided with a connecting end 1311, the outer diameters of the connecting ends 1211 and 1311 are adapted to the inner diameter of the high-pressure hose 11, so that the connecting ends 1211 and 1311 can be respectively inserted from the openings at both ends of the high-pressure hose 11, so that the air outlet valve 12 and the air inlet valve 13 are respectively fixed at both ends of the high-pressure hose 11, and in order to increase the firmness of the connection, the connecting ends 1211 and 1311 are provided with a diameter slightly larger than the high pressure hose 11. The check ring 1212 and the check ring 1312 on the inner diameter of the high-pressure hose 11 are conducive to the flexibility of the high-pressure hose 11 when inserted therein. At the same time, arc-shaped pipe sleeves 14 and pipe sleeves 15 adapted thereto are provided at the connection points at both ends of the high-pressure hose 11. The pipe sleeves 14 and pipe sleeves 15 are made of metal and are used to further compress the connected high-pressure hose 11. During assembly, the pipe sleeves 14 and pipe sleeves 15 are first put on the high-pressure hose 11 and away from the connection point, and then the air outlet valve 12 and the air inlet valve 13 are inserted into the openings at both ends of the high-pressure hose 11, and then the pipe sleeves 14 and pipe sleeves 15 are moved to the connection point and the conventional pipe sleeve assembly tools are used to clamp the pipe sleeves 14 and pipe sleeves 15. The deformed pipe sleeves 14 and pipe sleeves 15 can tighten the two connection ends of the high-pressure hose 11.

[0042] The high-pressure hose 11 is a conventional flexible high-pressure plastic tube that can load and circulate liquefied gas. The air outlet valve 12 and the air inlet valve 13 are in an unactivated closed state under normal conditions. Therefore, the interior of the gas storage mechanism 1 is a closed space. The gas storage mechanism 1, as a gas storage container, can be filled with liquid gas through the one-way air inlet valve 13. The liquefied gas is a liquefied gas that can be quickly vaporized at room temperature, such as various liquefied gases with a boiling point below 0°C and a critical temperature above 100°C. Preferably, a non-toxic and non-flammable liquefied gas is used, such as octafluorocyclobutane, hexafluoropropane or monochlorotetrafluoroethane. The high-pressure hose 11 can be bent freely, and can be bent into a relatively standard arc in conjunction with the arc-shaped air outlet valve 12 and the air inlet valve 13, and constitutes the main body of the drowning self-rescue collar of the present invention.

[0043] Reference Figure 6 and Figure 7 , Figure 6Schematic diagram of the internal structure of the outlet valve of the present invention, the outlet valve 12 includes a valve body 121, a spring 122, a plug 123, a sealing ring 124, a valve needle 125, a sealing gasket 126, and a retaining spring 127, wherein the valve body 121, the spring 122, the plug 123 and the valve needle 125 are arc-shaped and adapted to each other, and a plurality of chambers of different sizes are arranged inside the valve body 121, which are valve airway 1213, valve small chamber 1214, valve middle chamber 1215, and valve large chamber 1216 from small to large according to their inner diameters, and the purpose is to place various gas chambers adapted to them. The valve component, the valve airway 1213 is located inside the connecting end 1211, and is communicated with the high-pressure hose 11 and the valve chamber 1214 at the same time. The inner diameter of the valve chamber 1214 is adapted to the outer diameter of the spring 122, so that a part of the spring 122 is located in the valve chamber 1214 and will not swing but can be freely extended and retracted. The other end of the spring 122 supports the valve needle head 1251 located on the valve needle 125. The valve needle head 1251 is located in the valve middle chamber 1215, and its outer diameter is smaller than the inner diameter of the valve middle chamber 1215, which is convenient for gas circulation. The blocking member 123 is connected to the valve large chamber 1214. 216, so that the plugging piece 123 can be pushed into the valve large chamber 1216 from the opening of the valve body 121. At the same time, a groove 1218 adapted to the sealing ring 124 is provided on the valve large chamber 1216. The two sealing rings 124 can be placed in the two grooves 1218 respectively, thereby preventing the gap between the plugging piece 123 and the valve large chamber 1216 from flowing gas. The plugging piece 123 is also provided with a plugging piece head 1231 with a slightly smaller diameter and adapted to the valve middle chamber 1215. The plugging piece head 1231 can be pushed into the valve middle chamber 1215. The valve large chamber 1216 is provided with a The retaining ring groove 1219 adapted to the retaining ring 127 enables the retaining ring 127 to be detachably fixed in the retaining ring groove 1219 and prevents the plugging member 123 from withdrawing. The plugging member 123 is also provided with an arc-shaped channel 1220, the inner diameter of which is greater than the outer diameter of the valve needle 125, and the main body of the valve needle 125 can pass through the arc-shaped channel 1220. At the same time, a sealing gasket 126 is provided between the valve needle head 1251 and the plugging member head 1231. Under the force of the spring 122 on the valve needle head 1251, the sealing gasket 126 seals the air passage of the valve body 121;

[0044] When pressure is applied to the valve needle 125 from the outside, the valve needle head 1251 drives the sealing gasket 126 to leave the plug head 1231, and the air passage of the valve body 121 is immediately connected to open the air outlet valve 12, and the gas stored in the high-pressure hose 11 flows out through the gap between the valve needle 125 and the plug 123. The valve needle 125 is also provided with a valve needle groove 1252 adapted to the retaining spring 127. When the valve needle groove 1252 moves to the position of the retaining spring 127, the valve needle 125 is stuck and cannot move. At this time, the air outlet valve 12 is just in the open state, and the valve needle 125 cannot move, thereby ensuring that the gas in the high-pressure hose 11 can be fully released;

[0045] The valve body 121 is also provided with a protrusion 1217, which is used to connect the outlet valve 12 with the joint mechanism 2, and the connection method thereof will be described in detail later in conjunction with the accompanying drawings;

[0046] In terms of the manufacturing process of the outlet valve 12, it is difficult to manufacture the arc-shaped valve body 121, the plug 123 and the valve needle 125 using traditional lathe processing, so they can be processed and produced by mold casting or 3D printing.

[0047] Reference Figure 8 and Fig. 9 , Figure 8 Schematic diagram of the internal structure of the air intake valve of the present invention, the air intake valve 13 includes a valve body 131, a spring 132, a valve needle 133, a sealing ring 134 and a retaining spring 135, wherein the valve body 131, the spring 132 and the valve needle 133 are arc-shaped and adapted to each other, the valve body 131 is provided with a slide groove 1313 adapted to the spring 132, so that the spring 132 is placed in the slide groove 1313 and cannot swing but can freely expand and contract, and the end of the slide groove 1313 is also provided with a retaining spring groove 1315 adapted to the retaining spring 135 The function of the retaining spring 135 is to block one end of the spring 132, and the other end of the spring 132 supports the large annular protrusion 1331 on the valve needle 133. The valve needle 133 is also provided with a middle annular protrusion 1332 and a small annular protrusion 1333. There are grooves adapted to the two sealing rings 134 between the middle annular protrusion 1332 and the small annular protrusion 1333 and between the middle annular protrusion 1332 and the large annular protrusion 1331. The two sealing rings 134 can be tightly sleeved in the two grooves. The valve needle 133 is also provided with a valve needle air hole 1334. The valve needle One end opening of the air hole 1334 is located at the small ring protrusion 1333, and the other end opening is located on the groove between the middle ring protrusion 1332 and the large ring protrusion 1331. The outer diameters of the middle ring protrusion 1332 and the small ring protrusion 1333 are the same and are adapted to the inner diameter of the valve hole 1314 located on the valve body 131, so that the valve needle 133 can be pushed in from the direction of the spring 132 and blocked by the sealing ring 134 sleeved on the groove between the middle ring protrusion 1332 and the large ring protrusion 1331, and at the same time, another sealing ring 134 is sleeved from the small ring protrusion 1333 into the groove between the middle ring protrusion 1332 and the large ring protrusion 1331. The valve needle is fixed on the valve hole 1314 in the groove between the small annular protrusion 1333 and the middle annular protrusion 1332. The pressure exerted by the spring 132 on the large annular protrusion 1331 can seal the gap between the valve hole 1314 and the valve needle 133. On the other hand, since the internal air pressure of the slide groove 1313 is higher than the external standard atmospheric pressure, the force exerted by the internal high air pressure on the sealing ring 134 inside the slide groove 1313 will make the valve needle air hole 1334 inside it in a closed state.

[0048] When inflating, align the small annular protrusion 1333 on the valve needle 132 with the inflation port of the external inflation device. Since the internal pressure of the inflation container used is higher than the internal pressure of the air inlet valve 13, the gas in the inflation container will enter the slide groove 1313 through the valve needle air hole 1334 and be stored in the high-pressure hose 11. After stopping inflation, the internal pressure of the air inlet valve 13 is higher than the external pressure, and the valve needle air hole 1334 is automatically closed;

[0049] In terms of the manufacturing process of the intake valve 13, it is difficult to manufacture the arc-shaped valve body 131 and the valve needle 133 using traditional lathe processing, so they can be processed and produced by mold casting or 3D printing.

[0050] Reference Fig. 9 and 10 , Fig.10 The schematic diagram of the connection state of the joint mechanism of the present invention is as follows: the joint mechanism 2 comprises a bidirectional female joint 21, a large male joint 22 and a small male joint 23; the bidirectional female joint 21, the large male joint 22 and the small male joint 23 are all configured as arcs adapted to each other; the two ends of the bidirectional female joint 21 are provided with a plurality of barbed petal teeth 211 separated from each other; the plurality of petal teeth 211 are connected as a whole in the middle and form two petal chambers 212 therein; the size and shape of the petal chambers 212 are adapted to the mushroom heads 221 and 231 provided on the large male joint 22 and the small male joint 23, so that the large male joint 21 is adapted to the mushroom heads 221 and 231 provided on the large male joint 22 and the small male joint 23, The head 22 and the small male connector 23 are detachably connected to the two ends of the two-way female connector 21. The two-way female connector 21 is made of plastic with a certain degree of flexibility, so that each of its petal teeth 211 can move within a certain elastic range. It should be noted that the flexibility of the two-way female connector 21 can determine the force required to separate it from the large male connector 22 and the small male connector 23. The external force required to be applied by the connector mechanism 2 during separation must be greater than the force applied to the excitation mechanism 3 to release the gas, so as to prevent the connector mechanism 2 from being separated due to the force applied to the excitation mechanism 3;

[0051] The large male connector 22 and the small male connector 23 are respectively provided with a top portion 223 and a top portion 234 adapted to the spring coil 4, so that the two ends of the spring coil 4 can be respectively sleeved on the top portion 223 and the top portion 234, and at the same time, the two ends are respectively fixed in the spring fixing holes 222 and the spring fixing holes 232 provided on the top portion 223 and the top portion 234, and the top portion 223 is also provided with an excitation chamber 224 for placing the main body of the excitation mechanism 3, and the top portion 234 is also provided with a fixing hole 233 for connecting the excitation mechanism 3;

[0052] Due to the special structure of the bidirectional female connector 21, it is difficult to remove the mold when using the traditional injection molding process, so 3D printing is preferably used for manufacturing.

[0053] See also Fig.12 , Fig.12 for Figure 2 In the enlarged schematic diagram at point A, the inner diameter of the spring coil 4 is adapted to the outer diameter of the top portion 223 of the large male connector 22, so that one end of the spring coil 4 can be sleeved on the top portion 223 and can be freely retracted and retracted, the inner diameter of the spring fixing hole 222 on the large male connector 22 is adapted to the wire diameter of the spring coil 4, a small bend is provided at the end of the spring coil 4 and can be inserted into the spring fixing hole 222 for fixation, and the other end of the spring coil 4 is fixed in the spring fixing hole 232 on the small male connector 23 in the same way.

[0054] Reference Fig.13 and Fig.14 , Fig.13 Schematic diagram of the connection state of the large male connector and the air outlet valve of the present invention. The air outlet valve 12 is provided with two protrusions 1217, and a small notch 1221 is provided on the protrusion 1217. The size of the small notch 1221 is adapted to the clip hook 241 provided on the clip 24. The top portion 223 is provided with two upper and lower grooves 226 adapted to the protrusion 1217, and small square holes 227 adapted to the clip hook 241 are respectively provided in the grooves 226. The clip 24 is a flexible Made of plastic or metal material, when the two protrusions 1217 on the air outlet valve 12 are pushed into the two grooves 226, the clip hooks 241 at both ends of the clip 24 can be inserted into the two small square holes 227, and at the same time, the clip 24 is sunk into a corresponding annular groove located between the two grooves 226. Since the two ends of the clip 24 are located in the small notches 1221 of the protrusions 1217, the protrusions 1217 cannot withdraw from the grooves 226, thereby connecting and fixing the air outlet valve 12 and the large male connector 22.

[0055] Reference Fig.14 and Fig.15The excitation mechanism 3 is composed of a slider 31, a pull wire 32 and an excitation chamber 224. The slider 31 is provided with a slider protrusion 311, and the slider protrusion 311 is provided with a small hole 313. The inner diameter of the small hole 313 is adapted to the diameter of the pull wire 32, so that the end of the pull wire 32 can pass through the small hole 313 and make a spherical knot with itself. The diameter of the knot is larger than the diameter of the small hole 313, so that the pull wire 32 cannot exit the small hole 313. The slider 31 is also provided with a cap hole 312. The cap hole 312 is a non-through hole, and its depth is less than the thickness of the slider 31. At the same time, the diameter of the cap hole 312 is the same as the diameter of the outlet valve. The valve needle 125 on the cap 12 is adapted to the valve needle 125, so that the end of the valve needle 125 can be inserted into the cap hole 312 for fixing, the top portion 223 is provided with an arc-shaped excitation chamber 224, the inner diameter and curvature of the excitation chamber 224 are adapted to the slider 31, and the top portion 223 is also provided with a notch 225, the notch 225 is adapted to the slider convex portion 311 on the slider 31, so that the slider 31 can slide in the excitation chamber 224, when the large male connector 22 is in a connected state with the outlet valve 12, the slider 31 is inside the excitation chamber 224 and can slide toward the outlet valve 12 direction through the force of the pull wire 32;

[0056] The pull wire 32 is a flexible wire with low elasticity but sufficient tensile strength, preferably a soft nylon wire made of nylon fiber.

[0057] Reference Fig.15 , Fig.15 This is a schematic diagram of the excitation mechanism of the present invention, one end of the pull wire 32 is fixed on the slider 31, and the other end is fixed on the pull wire fixing hole 233 located at the small male connector 23. Since the spring coil 4 is mounted on the gas storage mechanism 1 and can be freely retracted, and the pull wire 32 is in the annular gap between the spring coil 4 and the gas storage mechanism 1, when the joint mechanism 2 is in a connected state, the self-rescue collar body of the present invention is pulled by external force, and the pull wire 32 will drive the slider 31 to move toward the air outlet valve 12 under the constraint of the spring coil 4, thereby stimulating the air outlet valve 12 to release gas.

[0058] Reference Fig.16 , Fig.16Schematic diagram of the inflated state of the flexible airbag of the present invention. When the connecting mechanism 2 is in the connected state, the components constituting the present invention will form a relatively standard ring shape, the size of which is adapted to the cylindrical neck of a person, so that it is convenient to wear and ensures that it will not fall off the head of the drowning person during the lifesaving process. When drowning occurs, the drowning person pulls the drowning self-rescue collar of the present invention worn on the neck with his hand, and the self-rescue collar is deformed and stretched under the action of external force. The spring coil 4 wrapped by the flexible airbag 5 will drive and constrain the pull wire 32 to move along the force direction of the spring coil 4, and then the pull wire 32 transmits the force to the slider 31 connected thereto, and the slider 31 drives the valve needle 125 connected thereto to move so that the air outlet valve 12 releases the gas in the gas storage mechanism 1, and the released gas causes the flexible airbag 5 wrapped outside to expand rapidly and form a lifesaving collar, and the buoyancy generated by the lifesaving collar lifts the head of the drowning person out of the water, so that the drowning person can breathe.

[0059] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly and indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A drowning self-rescue collar, characterized in that: The invention comprises an arc-shaped gas storage mechanism, which is composed of a high-pressure hose, an air inlet valve and an air outlet valve. The high-pressure hose can be freely bent into an arc shape. The air inlet valve and the air outlet valve are also set to an arc shape and are respectively connected and fixed at both ends of the high-pressure hose. A liquefied gas is filled in the gas storage mechanism; The drowning self-rescue collar also includes: The joint mechanism is configured to be arc-shaped, and includes a bidirectional female joint and two unidirectional male joints. The two arc-shaped unidirectional male joints can be detachably connected to the arc-shaped bidirectional female joints. The two unidirectional male joints are respectively a large male joint and a small large male joint. The large male joint is connected to the outlet valve of the gas storage mechanism, and the small large male joint is in contact with the inlet valve of the gas storage mechanism but is not connected thereto. The excitation mechanism includes a pull wire, a slider and an excitation chamber, one end of the pull wire is fixed to the slider, and the other end is fixed to a small male connector, the slider is located in an excitation chamber adapted thereto, and the excitation chamber is located in a large male connector; A spring ring, wherein the spring ring is sleeved on the gas storage mechanism, and two ends of the spring ring are respectively fixed on the large male connector and the small male connector; A flexible airbag, which is a strip-shaped plastic spherical body with telescopic expansion characteristics, including an open end and a closed end. The flexible airbag is sleeved on the spring coil through its open end and completely wraps the large male connector and the small male connector; The gas outlet valve comprises a valve body, a valve needle, a plugging piece, a spring, a retaining spring, a sealing ring, and a sealing gasket, wherein the valve body, the spring, the plugging piece and the valve needle are arc-shaped and adapted to each other, the plugging piece is fixed in the valve body by the sealing ring and the retaining spring, the valve needle seals the central hole of the plugging piece by the spring and the sealing gasket, the valve needle extends outward from the valve body and is fixed on the slider, and the gas outlet valve can release gas by pressing the valve needle; The air intake valve comprises a valve body, a valve needle, a spring, a retaining spring and a sealing ring, wherein the valve body, the valve needle and the spring are arc-shaped and adapted to each other, one end of the spring presses against the retaining spring and the other end presses against the valve needle, and the valve needle seals the valve hole of the valve body through the spring and the sealing ring; The air outlet valve is provided with a protrusion for connecting to a large male connector, and the large male connector is provided with a groove adapted to the protrusion. The air outlet valve and the large male connector are connected and fixed by an elastic clip.

2. The drowning self-rescue collar according to claim 1, characterized in that: The liquefied gas in the gas storage mechanism is a non-toxic and non-flammable liquefied gas.

3. The drowning self-rescue collar according to claim 1, characterized in that: The flexible air bag is a strip-shaped latex balloon.

4. The drowning self-rescue collar according to claim 1, characterized in that: The pull line is a soft nylon line.

5. The drowning self-rescue collar according to claim 1, characterized in that: The spring coil is a relatively thin stainless steel spring.

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