CN113443100A

CN113443100A - Automatic inflation life buoy

Info

Publication number: CN113443100A
Application number: CN202110921393.XA
Authority: CN
Inventors: 孙栩妮; 孙亚新
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2021-09-28

Abstract

The invention discloses an automatic inflation life buoy, which comprises: an airbag and an inflation mechanism; the inflating mechanism comprises a high-pressure gas storage steel cylinder, an ejector pin, an inflating nozzle and a moving assembly, wherein the ejector pin and the moving assembly are installed in the inflating nozzle, one end of the inflating nozzle is communicated with the high-pressure gas storage steel cylinder, and the other end of the inflating nozzle is communicated with the air bag; the mouth of the high-pressure gas storage steel cylinder is provided with a layer of sealing film, the ejector pin is fixed on the moving assembly, and the tip end of the ejector pin is opposite to the mouth of the high-pressure gas storage steel cylinder; the charging connector is also provided with a water falling detection element, wherein when the water falling detection element detects that the air bag falls into water, the movement assembly moves towards the bottle opening of the high-pressure air storage steel cylinder so that the thimble punctures the sealing film; through the design, the invention does not need to be inflated in advance, thereby reducing the volume of the life buoy and being convenient to carry about; meanwhile, automatic inflation is achieved when the water falls into the water through the inflation mechanism, people falling into the water can be quickly rescued, the rescue speed is increased, and the use convenience is improved.

Description

Automatic inflation life buoy

Technical Field

The invention belongs to the technical field of safety rescue articles, and particularly relates to an automatic inflation life buoy.

Background

The life buoy is made of cork, foam, plastic or other light materials with small specific weight, is covered by canvas and plastic, and is filled with air for use.

With the rapid development of water traffic, transportation and tourism industries in China, more and more people take boats or operate on water, water accidents happen at the same time, the life buoy is used as a safety device in water, the function of the life buoy is more and more important, and the life buoy ensures the personal safety of the people on water.

At present, the traditional life buoy has the following problems: (1) the volume is large, and the carrying is inconvenient; (2) the air-inflation-free rescue robot can be used only by pre-inflating, occupies rescue time and cannot rescue in time.

Disclosure of Invention

The invention aims to provide an automatic inflation life buoy, which solves the problems that the existing life buoy is large in size and can be used only by pre-inflation.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides an automatic inflation life buoy, which comprises: an airbag and an inflation mechanism;

the inflating mechanism comprises a high-pressure gas storage steel cylinder, an ejector pin, an inflating nozzle and a moving assembly, wherein the ejector pin and the moving assembly are both arranged in the inflating nozzle, one end of the inflating nozzle is communicated with the high-pressure gas storage steel cylinder, and the other end of the inflating nozzle is communicated with the air bag;

the mouth of the high-pressure gas storage steel cylinder is provided with a layer of sealing film, the ejector pin is fixed on the moving assembly, and the tip end of the ejector pin is opposite to the mouth of the high-pressure gas storage steel cylinder;

and the inflating nozzle is also provided with a water falling detection element, wherein when the water falling detection element detects that the air bag falls into water, the movement assembly moves towards the bottle opening of the high-pressure air storage steel bottle so that the ejector pin punctures the sealing film.

Based on the disclosure, the invention is provided with the water falling detection element on the charging connector for detecting whether the air bag falls, and meanwhile, the charging connector is internally provided with the high-pressure air storage steel cylinder and the moving assembly, and the moving assembly is fixed with the thimble; when the water falling detection element detects that the air bag falls into water, the movement assembly can move towards the mouth of the high-pressure air storage steel cylinder, and the ejector pin is utilized to puncture the sealing film on the mouth of the high-pressure air storage steel cylinder, so that gas in the high-pressure air storage steel cylinder is released to inflate the air bag, and the automatic inflation function of the life buoy is further realized.

Through the design, the invention does not need to be inflated in advance, thereby reducing the volume of the life buoy and being convenient to carry about; meanwhile, automatic inflation is achieved when the water falls into the water through the inflation mechanism, people falling into the water can be quickly rescued, the rescue speed is improved, and the use convenience is improved.

In one possible design, the falling water detection element includes at least one water sensitive element, wherein each water sensitive element of the at least one water sensitive element is disposed in the air charging nozzle, and a plurality of water inlet holes are disposed on a surface of the air charging nozzle.

Based on the above disclosure, the invention uses the water sensitive element as the falling water detection element, the water sensitive element is essentially a trigger, also called as 'water soluble tablet' or 'life jacket tablet', the main material is swelling agent, which is solid before meeting water, but can be softened and disintegrated quickly after meeting water; when the air bag falls into water (equivalent to that the inflating nozzle also falls into the water therewith), water flow enters the inflating nozzle through the water inlet hole and contacts with the water sensitive element, so that the water sensitive element is softened, and the water falling detection is realized.

In one possible design, the motion assembly includes: the motion assembly includes: the pressing spring, the ejector pin seat and the pressing spring base;

the pressure spring is in a compressed state, one end of the pressure spring is fixed on the pressure spring base, and the other end of the pressure spring is fixed on the ejector pin base;

the pressure spring base is fixed the charging connector towards in the one end of gasbag, the thimble seat dorsad be fixed with on the terminal surface of pressure spring the thimble, just the water sensitive component will the thimble seat is contradicted, in order when the gasbag does not fall into the aquatic, block the pressure spring motion.

Based on the disclosure, the invention discloses a specific structure of a moving assembly, namely, a compressed pressure spring is used as a power source, one end of the pressure spring is fixed on a pressure spring base, so that the fixation of the pressure spring is realized, the other end of the pressure spring is used as a telescopic end, a thimble seat is fixed, a thimble is fixed on the thimble seat, and meanwhile, a water sensitive element is used as a blocking piece of the thimble seat; therefore, when the air bag does not fall into water, the water sensitive element is in a solidified state, and the thimble seat cannot move; once the air bag 10 falls into water, water flow enters the inflating nozzle through the water inlet hole and then contacts the water sensitive element to soften and disintegrate the water sensitive element, and the water sensitive element cannot block the thimble seat and can move towards the bottle opening of the high-pressure air storage steel bottle under the action of the elastic force of the pressure spring to puncture the sealing film of the bottle opening, so that gas in the high-pressure air storage bottle is released to inflate the air bag.

In one possible design, the thimble seat comprises a connecting part and a blocking part, wherein the blocking part has the same shape as the inner cavity of the inflating nozzle;

the connecting part is fixed on the end face, facing the pressure spring, of the thimble, and the blocking part is fixedly connected with one end, far away from the thimble, of the connecting part;

the water sensitive element is fixed on the inner wall of the charging connector, and one end of the blocking part, which is far away from the connecting part, abuts against the water sensitive element;

when the thimble punctures the sealing membrane, the blocking part plugs the water inlet on the charging connector.

Based on the disclosure, the invention discloses a specific structure of the thimble seat, namely, the thimble seat is fixedly connected with the thimble through the connecting part, and the blocking part is abutted against the water sensitive element, so that the limit of the thimble seat is realized; meanwhile, the blocking part is set to be the same as the shape of the inner cavity of the inflating nozzle (for example, the inner cavity is cylindrical, and the blocking part is also cylindrical), so that when the water-sensitive element is softened when meeting water, the blocking part can block all water inlet holes on the inflating nozzle under the driving of the pressure spring, thereby preventing gas in the high-pressure gas storage steel cylinder from escaping from the water inlet holes and ensuring the inflating effect of the air bag.

In one possible design, the thimble adopts a hollow structure, wherein the tip end of the thimble is provided with an air inlet, and the end surface of the thimble facing the thimble seat is provided with an air outlet.

Based on the disclosure, the air guide is realized by arranging the air inlet hole on the thimble, so that the air is conveyed into the air bag from the inside of the thimble, and the air bag is inflated.

In one possible design, the pressure spring base adopts an annular structure, an annular clamping groove is formed in the connecting end of the inflating nozzle and the air bag, and the pressure spring base is clamped in the annular clamping groove.

Based on the disclosure, the invention discloses a specific structure of a pressure spring base, namely, an annular base is used and clamped in an annular clamping groove in an inflating nozzle, so that the pressure spring base is fixed.

In one possible design, the airbag is housed in a ring, wherein the airbag, upon inflation, ruptures the ring to form a donut-shaped structure.

Based on the above disclosure, the ring body can protect the airbag.

In a possible design, the device further comprises a handle, wherein the high-pressure gas storage steel cylinder and the inflating valve are arranged in the handle, and the handle is provided with a water inlet corresponding to the position of the water inlet hole.

In one possible design, a warning light is embedded in the bottom end of the handle.

Based on the above disclosure, the warning light is arranged on the handle, so that rescue workers can be guided, and the timeliness of rescue is improved.

In one possible design, the surface of the grip is also provided with anti-slip lines.

Based on the above disclosure, by providing the anti-slip pattern, the grip of a person falling into water or a worker can be facilitated.

The invention has the beneficial effects that:

(1) the invention does not need to be inflated in advance, thereby reducing the volume of the life buoy and being convenient to carry; meanwhile, automatic inflation is achieved when the water falls into the water through the inflation mechanism, people falling into the water can be quickly rescued, the rescue speed is increased, and the use convenience is improved.

(2) When the thimble punctures the sealing film of the mouth of the high-pressure gas storage steel cylinder, the water inlet hole on the charging connector can be plugged by the thimble seat, so that the gas in the high-pressure gas storage steel cylinder can be effectively prevented from escaping from the water inlet hole, and the charging effect on the air bag is ensured.

Drawings

Fig. 1 is a schematic view of the internal structure of a self-inflating lifebuoy provided by the present invention.

Fig. 2 is an enlarged schematic view of the structure at a in fig. 1 according to the present invention.

Fig. 3 is a cross-sectional view of a self-inflating lifebuoy provided by the present invention.

FIG. 4 is a schematic view of a specific connection structure between the inflation mechanism and the airbag provided by the present invention.

Fig. 5 is a schematic illustration of the uninflated configuration of the self-inflating lifebuoy provided by the present invention.

Fig. 6 is a schematic view of the inflated configuration of the self-inflating lifebuoy of the present invention.

Fig. 7 is a schematic view of the attachment of a self-inflating lifebuoy provided by the present invention.

Reference numerals: 10-air bag; 20-an inflation mechanism; 21-high pressure gas storage steel cylinder; 22-a thimble; 23-an air charging nozzle; 30-a water sensitive element; 23 a-a water inlet; 24-a pressure spring; 25-thimble seat; 26-a pressure spring base; 25 a-a connecting portion; 25 b-a barrier; 22 a-an air intake; 23 b-a ring slot; 40-ring body; 51-a water inlet; 50-a grip; 52-warning light; 53-non-slip pattern; 60-placing the seat.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.

Examples

As shown in fig. 1 to 6, the self-inflating lifebuoy provided in the first aspect of the present embodiment does not need to be pre-inflated when in use, and has a small volume and is convenient to carry about; meanwhile, rescue can be provided for people falling into water in a throwing mode, and the use convenience is high; in addition, the automatic air-filling device can automatically fill air when people fall into water, can quickly rescue people falling into water, and improves the rescue speed.

As shown in fig. 1 to 6, the self-inflating lifebuoy provided in the first aspect of the present embodiment may include, but is not limited to: an airbag 10 and an inflation mechanism 20; that is, the airbag 10 functions as a life buoy, and the inflating mechanism 20 inflates the airbag 10 when the airbag 10 falls into water, thereby functioning as a rescue tool for people falling into water.

As shown in fig. 1, 2, and 4, the following provides a specific structure of the inflation mechanism 20:

in this embodiment, for example, the inflation mechanism 20 includes a high-pressure gas storage cylinder 21, a thimble 22, an inflation nozzle 23 and a moving component, wherein the thimble 22 and the moving component are both installed in the inflation nozzle 23, one end of the inflation nozzle 23 is communicated with the high-pressure gas storage cylinder 21, and the other end of the inflation nozzle 23 is communicated with the airbag 10; the high-pressure gas storage steel cylinder 21 is characterized in that a sealing film is arranged at the bottle opening, the ejector pin 22 is fixed on the moving assembly, and the needle tip of the ejector pin 22 is opposite to the bottle opening.

Through the above explanation, as long as the moving component drives the thimble 22 to move towards the mouth of the bottle, the sealing film of the mouth of the bottle can be punctured, so as to release the gas in the high-pressure gas storage steel cylinder 21 and deliver the gas to the airbag 10, thereby completing the automatic inflation of the airbag 10.

In this embodiment, the gas stored in the high-pressure gas storage cylinder 21 may be, but is not limited to: carbon dioxide.

In addition, in the present embodiment, the airbag 10 is connected to the inflation nozzle 23 through an air inlet pipe, and an air inlet of the air inlet pipe wraps an air outlet of the inflation nozzle 23.

In addition, in order to ensure that the air bag 10 can trigger the movement of the moving assembly when falling into water, so as to rapidly puncture the high-pressure gas storage steel cylinder and timely inflate the air bag 10, the embodiment further comprises a water falling detection element arranged on the inflation nozzle 23; namely, the falling water detection element is used for detecting whether the air bag 10 falls into water, and as long as the falling water detection element detects that the air bag 10 falls into water, the moving assembly can move towards the bottle opening of the high-pressure air storage steel cylinder 21, so that the ejector pin 22 punctures the sealing film, and the air bag 10 is automatically inflated.

Therefore, through the design, the invention does not need to be inflated in advance before use, thereby greatly reducing the volume of the life buoy and being convenient for people to carry; meanwhile, the throwing device is convenient for throwing when people fall into water; namely, no matter people carry the life buoy to fall into water or throw the life buoy to a person falling into water, the life buoy can be automatically inflated when falling into water, so that the quick rescue of the person falling into water is ensured.

As shown in fig. 1, 2, 3 and 4, the following provides a specific structure of the inflation mechanism 20 for achieving automatic inflation:

first, in the present embodiment, for example, the water falling detection element may include, but is not limited to, at least one water sensitive element 30, wherein each water sensitive element 30 of the at least one water sensitive element 30 is disposed in the air charging connector 23, that is, as shown in fig. 1 and 2.

In the present embodiment, the water sensitive element 30 may be provided with 2, but not limited to, as shown in fig. 3 and 4.

Meanwhile, in order to detect the falling water of the airbag 10, in this embodiment, a plurality of water inlet holes 23a are further formed in the surface of the inflation nozzle 23, as shown in fig. 1 and 5; through the design, as long as the air bag 10 falls into water (correspondingly, the inflating nozzle 23 also falls into water), at the moment, water enters the inflating nozzle 23 through the water inlet hole 23a and contacts with the water sensitive element 30, and therefore the falling water detection of the air bag 10 is realized.

In the embodiment, the water sensitive element 30 is substantially a trigger, which is also called a "water soluble tablet" or a "life jacket tablet", and the main material is a swelling agent, which is solid before meeting water and can be rapidly softened and disintegrated after meeting water; when the water-falling detection device is contacted with water, the water-falling detection device can be softened and disintegrated, and then the water-falling detection is realized.

The moving assembly provided in this embodiment is based on the water sensor 30 to perform the movement, which is described in detail as follows:

first, a specific structure of the motion assembly is explained, and in the present embodiment, it may include, by way of example and not limitation: a compression spring 24, a thimble seat 25 and a compression spring base 26; referring to fig. 2 and 4, the connection structure of the above components is: the pressure spring 24 is in a compressed state, one end of the pressure spring 24 is fixed on the pressure spring base 26, and the other end of the pressure spring 24 is fixed on the thimble seat 25; simultaneously, will the pressure spring base 26 is fixed inflation nozzle 23 towards in one end of gasbag 10 thimble seat 25 dorsad be fixed with on the terminal surface of pressure spring 24 thimble 22, and set up water sensitive component 30 will thimble seat 25 is contradicted, in order when gasbag 10 does not fall into the aquatic, block the motion of pressure spring 24.

Therefore, the working principle of the motion assembly is as follows: when the air bag 10 does not fall into water, the water sensitive element 30 in the inflating nozzle 23 does not contact water, softening and disintegration cannot occur, at the moment, the ejector pin base 25 can be blocked by the water sensitive element, the pressure spring 24 cannot reset, and the air bag 10 cannot be inflated; once the airbag 10 falls into water, water flows into the charging connector 23 through the water inlet hole 23a and contacts with the internal water sensitive element 30 to soften and disintegrate the water sensitive element, at the moment, the water sensitive element 30 cannot bear the elastic force of the pressure spring 24 and cannot prevent the pressure spring 24 from resetting, therefore, the thimble seat 25 moves towards the opening of the high-pressure gas storage steel cylinder 21 under the action of the elastic force of the pressure spring 24, and then the thimble 22 is driven to puncture the sealing film of the opening to release the gas in the high-pressure gas storage steel cylinder 21, so that the airbag 10 is charged.

In this embodiment, in order to prevent the gas in the high pressure gas storage cylinder 21 from escaping from the water inlet 23 of the inflator 23 when the airbag 10 is inflated, the thimble seat 25 is configured such that the water inlet 23a is blocked by the thimble seat 25 when the thimble 22 pierces the sealing film of the bottle mouth.

As shown in fig. 4 and 2, an exemplary thimble seat 25 may include, but is not limited to: a connecting portion 25a and a blocking portion 25b, wherein the shape of the blocking portion 25b is the same as the shape of the inner cavity of the charging connector 23; for example, the inner cavity of the charging connector 23 is cylindrical, and then the blocking portion 25b is also provided in a cylindrical shape.

Meanwhile, the connecting portion 25a is fixed on the end surface of the thimble 22 facing the compression spring 24, and the blocking portion 25b is fixedly connected to one end of the connecting portion 25a away from the thimble 22, that is, as shown in fig. 2 and 4, the thimble 22 is connected to the blocking portion 25b through the connecting portion 25 a; meanwhile, the blocking portion 25b contacts with the inner cavity of the charging connector 23, so that the water inlet 23a is sealed later, and a good sealing effect is achieved.

In this embodiment, the water sensor 30 is fixed on the inner wall of the air charging nozzle 23, and one end of the blocking portion 25b far away from the connecting portion 25a abuts against the water sensor 30; referring to fig. 2 and 4, when the water sensitive element 30 in the charging nozzle 23 does not contact water, the blocking portion 25b does not block the water inlet 23a, and when the water sensitive element 30 softens and collapses when contacting water, the thimble seat 25 moves towards the mouth of the high pressure gas storage steel cylinder 21 under the action of the elastic force of the compression spring 24, and the blocking portion 25b moves therewith, at this time, the water inlet 23a can be blocked, thereby realizing the function of preventing gas from escaping.

In this embodiment, since the inlet holes 23a are annularly arranged on the charging connector 23, and there are a plurality of inlet holes, the blocking portion 25b is configured to have the same shape as the inner cavity of the charging connector 23, so that all the inlet holes 23a on the charging connector 23 are blocked under the elastic force of the compression spring 24.

In this embodiment, in order to rapidly deliver the gas in the high-pressure gas storage steel cylinder 21 into the airbag 10, the thimble 22 is further provided with a hollow structure, and meanwhile, an air inlet hole 22a is provided at the tip of the thimble 22, and an air outlet hole is provided on the end surface of the thimble 22 facing the thimble seat 25; therefore, with the above design, the diversion of the gas can be realized, so that the gas is delivered into the airbag 10 from the inside of the thimble 22 to inflate the airbag 10.

In this embodiment, in order to avoid the pressure spring base 26 blocking the gas flowing out from the thimble 22, the pressure spring base 26 is further arranged to adopt an annular structure, and an annular clamping groove 23b is arranged in a connection end of the inflating valve 23 and the airbag 10, that is, the pressure spring base 26 is clamped in the annular clamping groove 23 b; referring to fig. 2, by the above design, the installation of the compression spring 24 can be ensured, the base with the annular structure can not block the gas from flowing into the airbag 10, and the rapid inflation of the airbag 10 is ensured.

As shown in fig. 1, 2 and 5, in the present embodiment, the airbag 10 is further sleeved in the ring body 40 to protect the airbag 10.

In this embodiment, for example, the ring body 40 may be made of, but not limited to, latex, so as to ensure that after the airbag 10 is inflated, the ring body 40 can be broken to form a circular ring structure, and the life buoy function is realized, as shown in fig. 6.

In this embodiment, the ring body 40 may also have other shapes, such as an oval shape, a boat shape, etc., which are not limited herein and can be set according to the actual use situation.

In this embodiment, the high-pressure gas storage steel cylinder 21 and the charging connector 23 are also sleeved in the grip 50 to protect the above components; meanwhile, the handle 50 is further provided with a water inlet 51 corresponding to the position of the water inlet 23a, so that when the air bag 10 falls into water, water flow can flow into the inflating valve 23, and thus automatic inflation of the air bag 10 is realized.

Meanwhile, in the embodiment, a warning light 52 is further embedded at the bottom end of the grip 50 so as to guide the position of the person falling into the water for the rescue, thereby improving the rescue speed and the survival probability of the person falling into the water.

In addition, in the embodiment, the surface of the grip 50 is further provided with anti-slip lines 53 for the people falling into the water or the workers to grasp, so that the people falling into the water can grasp the life buoy to rescue the people falling into the water.

Similarly, in the embodiment, in order to improve the identification degree of the life buoy, but not limited to, a plurality of reflective strips are disposed on the surface of the airbag 10 to reflect light during searching, so that the search by rescuers is facilitated.

Of course, the handle 50 of the present embodiment may be further provided with a storage drawer for storing compressed food, fresh water and other substances therein, so as to improve the survivability of the person falling into the water; meanwhile, a GPS positioner can be embedded on the grip 50, so that the position information of the person falling into the water can be sent in real time, and the timeliness of rescue is guaranteed.

In this embodiment, an example lifebuoy may be placed in the rest 60 when not in use, as shown in fig. 7; in this embodiment, for example, a fixing hole is provided on the top surface of the placing seat 60, and the grip 50 of the lifebuoy is fixed in the fixing hole, and at the same time, but not limited to, a rubber plug adapted to the water inlet 51 may be provided in the fixing hole, so that when the grip 50 is plugged into the fixing hole, the water inlet 51 is blocked, thereby preventing the moisture sensitive element inside the grip 50 from being affected.

Of course, a sealing layer (but not limited to, sealant) may be disposed at the water inlet 51 to seal the water inlet 51 to prevent the water sensitive element inside the grip 50 from being affected by moisture; when the use is needed, the sealing layer is only needed to be torn off.

In this embodiment, for example, one or more fixing holes are formed on the top surface of one placing seat 60, so as to place one or more life buoys; of course, the number of the fixing holes is not limited, and may be set according to actual use.

Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatically inflatable lifebuoy comprising: an airbag (10) and an inflation mechanism (20);

the inflating mechanism (20) comprises a high-pressure gas storage steel cylinder (21), an ejector pin (22), an inflating nozzle (23) and a moving assembly, wherein the ejector pin (22) and the moving assembly are mounted in the inflating nozzle (23), one end of the inflating nozzle (23) is communicated with the high-pressure gas storage steel cylinder (21), and the other end of the inflating nozzle (23) is communicated with the air bag (10);

a sealing film is arranged at the bottle opening of the high-pressure gas storage steel bottle (21), the ejector pin (22) is fixed on the moving assembly, and the needle tip of the ejector pin (22) is opposite to the bottle opening;

the inflating valve (23) is further provided with a water falling detection element, wherein when the water falling detection element detects that the air bag (10) falls into water, the movement assembly moves towards the bottle opening of the high-pressure air storage steel bottle (21), so that the ejector pin (22) pierces the sealing film.

2. An automatically inflatable lifebuoy according to claim 1 wherein said water fall detection element comprises at least one water sensitive element (30), wherein each water sensitive element (30) of said at least one water sensitive element (30) is arranged within said inflation nozzle (23) and wherein the surface of said inflation nozzle (23) is provided with a number of water inlet holes (23 a).

3. An automatically inflatable lifebuoy according to claim 2 wherein the locomotion assembly comprises: a pressure spring (24), a thimble seat (25) and a pressure spring base (26);

the compression spring (24) is in a compressed state, one end of the compression spring (24) is fixed on the compression spring base (26), and the other end of the compression spring (24) is fixed on the ejector pin base (25);

pressure spring base (26) are fixed charging connector (23) face in the one end of gasbag (10), thimble seat (25) are dorsad be fixed with on the terminal surface of pressure spring (24) thimble (22), just water sensitive component (30) will thimble seat (25) are contradicted, in order when gasbag (10) do not fall into the aquatic, block pressure spring (24) motion.

4. An automatically inflatable lifebuoy according to claim 3 wherein said thimble seat (25) comprises a connecting portion (25a) and a blocking portion (25b), wherein said blocking portion (25b) has the same shape as the shape of the inner cavity of said inflation nozzle (23);

the connecting part (25a) is fixed on the end face, facing the pressure spring (24), of the thimble (22), and the blocking part (25b) is fixedly connected with one end, far away from the thimble (22), of the connecting part (25 a);

the water sensitive element (30) is fixed on the inner wall of the inflating nozzle (23), and one end, far away from the connecting part (25a), of the blocking part (25b) abuts against the water sensitive element (30);

when the thimble (22) punctures the sealing film, the blocking part (25b) blocks the water inlet (23a) on the inflating nozzle (23).

5. An automatically inflatable lifebuoy according to claim 3 characterized in that said thimble (22) is of a hollow structure, wherein the tip of said thimble (22) is provided with an air inlet hole (22a) and the end surface of said thimble (22) facing said thimble seat (25) is provided with an air outlet hole.

6. An automatic inflation life buoy as claimed in claim 3, wherein the pressure spring base (26) is of a ring structure, a ring-shaped clamping groove (23b) is arranged in the connection end of the inflating nozzle (23) and the air bag (10), and the pressure spring base (26) is clamped in the ring-shaped clamping groove (23 b).

7. An automatically inflatable lifebuoy according to claim 1 wherein said bladder (10) is located within a ring (40) and wherein said bladder (10) ruptures said ring (40) upon inflation to form a donut-like structure.

8. An automatically inflatable lifebuoy according to claim 2 further comprising: the handle (50), wherein, the high pressure gas storage steel bottle (21) and the charging connector (23) are all arranged in the handle (50), and the handle (50) is provided with a water inlet (51) corresponding to the position of the water inlet hole (23 a).

9. The self-inflating lifebuoy of claim 8, wherein a warning light (52) is embedded in the bottom end of the grip (50).

10. An automatically inflatable lifebuoy according to claim 8 wherein the surface of the grip (50) is further provided with anti-slip threads (53).