CN215205310U

CN215205310U - Lifesaving aerating device and lifesaving knapsack

Info

Publication number: CN215205310U
Application number: CN202121276029.4U
Authority: CN
Inventors: 闫兵杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-12-17
Anticipated expiration: 2031-06-08

Abstract

The utility model discloses a lifesaving aerating device and lifesaving knapsack, lifesaving aerating device includes main part, the gasbag, inlet channel, the gas cylinder, thimble and trigger mechanism, gasbag and the sealed intercommunication of inlet channel, the gas cylinder intussuseption is filled with compressed gas, trigger mechanism includes L type draw bar arm and fixes the stay cord in L type draw bar arm one end, L shape mounting groove has been seted up in the main part, L type draw bar arm is installed in L shape mounting groove, L type draw bar arm is connected with the main part is articulated, the pulling stay cord can drive L type draw bar arm around the articulated shaft rotation and promote the thimble to remove in order to puncture the gas cylinder towards the gas cylinder, after the thimble punctures the gas cylinder, compressed gas in the gas cylinder gets into in the gasbag and makes the gasbag keep expanding through inlet channel. The utility model provides a lifesaving aerating device and lifesaving knapsack have the timely characteristics of trigger for the gasbag can in time be opened after the user falls into water, thereby reserve sufficient safe rescue time for the person that falls into water, in order to reach assurance personnel's safety purpose.

Description

Lifesaving aerating device and lifesaving knapsack

Technical Field

The utility model relates to a lifesaving equipment technical field especially relates to a lifesaving aerating device and including this lifesaving aerating device's lifesaving knapsack.

Background

Drowning is a critical condition that a large amount of water is inhaled into the lungs to cause hypoxia asphyxia of the human body, and usually occurs in hot summer. In recent years, drowning accidents of students occur in many places throughout the country. Months 5 to 9 each year are seasons when students are drowned out frequently. According to related departments, 5.7 million people die of drowning every year in China. Drowning has become the number one killer leading to abnormal death of students.

In order to solve the problem, patent document CN210353657U discloses a life-saving backpack, which comprises a backpack body and straps connected with the backpack body, the inside of each strap is integrally provided with an air bag which is communicated with each other, a pocket is arranged below the strap on one side, and an inflating device is arranged inside the pocket and comprises a carbon dioxide inflating bottle, a water-melting tablet, an ejector pin, a spring and a trigger; the water melting tablet is arranged between the carbon dioxide gas charging bottle and the thimble, the other end of the thimble is connected with the trigger, and the periphery of the thimble is provided with a spring; the air charging device can be taken out and replaced through a take-out port on the pocket, and the air charging device is connected with the air bag inside the shoulder strap through a communicating pipe. When a user of the backpack falls into water carelessly, the water melting tablets in the air filling device in the straps dissolve rapidly after meeting water, the trigger pushes the thimble to pierce the bottle mouth of the carbon dioxide air filling bottle after being triggered, carbon dioxide in the carbon dioxide air filling bottle is released into the air bag inside the straps through the communicating pipe, the air bag is inflated and expanded, the folding straps are bounced off during expansion, the straps become an unfolding form, the inflated straps can provide buoyancy, so that people cannot sink, and the lifesaving effect is achieved.

However, the life-saving backpack adopts the trigger device of the water-melting tablet type, the tablets have certain timeliness, and the triggering can be realized only by completely soaking the tablets after the tablets fall into water, and the timeliness cannot be guaranteed, so that the airbag of the life-saving backpack cannot be opened in time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lifesaving aerating device and including this lifesaving device's lifesaving knapsack has the timely characteristics of triggering for the gasbag can in time be opened.

In order to achieve the above objects, in one aspect, the present invention provides a lifesaving aerating device, which comprises a main body, an air bag, an air inlet channel disposed on the main body, an air bottle sealingly mounted at one end of the air inlet channel, an ejector pin slidably sealingly mounted at the other end of the air inlet channel, and a trigger mechanism capable of driving the ejector pin to move in the air inlet channel toward the air bottle to puncture the air bottle, wherein the air bag is in sealed communication with the air inlet channel, compressed air is filled in the air bottle, the trigger mechanism comprises an L-shaped lever arm and a pull rope fixed at one end of the L-shaped lever arm, the main body is provided with an L-shaped mounting groove, the L-shaped lever arm is mounted in the L-shaped mounting groove, the L-shaped lever arm is hinged to the main body, the pull rope can drive the L-shaped lever arm to rotate around a hinge shaft and push the ejector pin to move toward the air bottle to puncture the air bottle, when the thimble punctures the gas cylinder, the compressed gas in the gas cylinder enters the air bag through the gas inlet channel and keeps the air bag expanded.

Preferably, the gasbag pass through the air cock with inlet channel sealing connection, still be provided with the air cock installation cavity in the main part, sealing mounting has the air cock on the air inlet of gasbag, air cock fixed mounting be in the air cock installation cavity, the air cock installation cavity with inlet channel passes through the inlet port intercommunication, compressed gas in the air cock installation cavity can pass through the import of air cock gets into in the gasbag.

Preferably, the air cock includes air cock body and sealed cap, the air cock installation cavity is both ends open-ended cavity, both ends open-ended tubulose about the air cock body is, the one end of air cock body with gasbag sealing connection, the other end of air cock body inserts behind the air cock installation cavity with sealed cap sealing connection, the outer peripheral face middle part of air cock body is provided with the ring channel, the import is seted up on the tank bottom of ring channel, the ring channel with form the chamber of admitting air between the lateral wall of air cock installation cavity, the inlet port with the chamber intercommunication of admitting air.

Preferably, the air cock still includes first sealing washer and second sealing washer, the air cock body is the pipe form, the air cock body with be provided with annular boss on the surface of the one end that the gasbag is connected, annular boss presses on the lower terminal surface of main part, first sealing washer sets up annular boss with between the lower terminal surface of main part, sealed cap pressure is in on the upper surface of main part, the second sealing washer sets up sealed cap with between the up end of main part.

Preferably, a one-way air valve is further mounted in the air tap, and compressed air enters the air bag through the one-way air valve.

Preferably, the one-way air valve comprises a fixed pipe, an air valve fixing cap connected with the first end of the fixed pipe and communicated with the fixed pipe, an ejector rod penetrating through the air valve fixing cap and the fixed pipe, a baffle fixedly installed at one end of the ejector rod and located outside the second end of the fixed pipe, and an ejector rod spring installed in the fixed pipe and capable of driving the ejector rod to move so that the baffle closes the second end of the fixed pipe, wherein the outer peripheral surface of the air valve fixing cap is in sealing connection with the inner hole wall of the air faucet body.

Preferably, the thimble is sleeved with a thimble spring, and the elasticity of the thimble spring enables the thimble to be separated from the gas cylinder; the thimble includes with the sliding part of inlet channel sliding seal connection and the needle body of sliding part fixed connection, the preceding terminal surface of needle body is the inclined plane, the needle groove has been seted up on the periphery of needle body, the needle groove passes the inclined plane of needle body front end.

Preferably, when the pull rope pulls the L-shaped pull rod arm to rotate around the hinge shaft, one end of the L-shaped pull rod arm connected with the pull rope rotates out of the L-shaped mounting groove, the upper surface and the lower surface of the main body are both provided with a clamping groove, the two clamping grooves are arranged at the opening of the L-shaped mounting groove, a U-shaped buckle is arranged at the opening of the L-shaped mounting groove, two free ends of the U-shaped buckle are respectively clamped in the clamping grooves on the upper surface and the lower surface of the main body, and the U-shaped buckle is located at one end of the L-shaped pull rod arm connected with the pull rope.

Preferably, the air bag is made of TPU material, and a woven mesh layer is arranged on the outer layer of the TPU material; the balloon is rectangular in shape when not inflated.

On the other hand, the utility model also provides a life-saving backpack, including knapsack body and foretell life-saving aerating device, this internal bottom of knapsack is provided with the gasbag and deposits the bag, the gasbag is placed the bag is deposited to the gasbag, the gasbag is deposited and is had on the bag and make can follow after aerifing the gasbag deposit the first opening that extends out in the bag, first opening is sealed through magic subsides or snap-fastener, the outside bottom of knapsack body is provided with outer bag of depositing, main part, gas cylinder and trigger mechanism place in outer bag of depositing, be provided with the second opening that can make the stay cord pulled out on the outer bag of depositing, the second opening is sealed through the zip fastener.

The utility model is different from the prior art, the utility model provides a lifesaving aerating device and life-saving backpack constitute through setting up trigger mechanism to by L type draw arm and the stay cord of connection on L type draw arm, after personnel such as knapsack user fall into water, through outside pulling stay cord, the stay cord can pull L type draw arm and rotate around its articulated shaft, L type draw arm's the other end rotates thereupon, and promote the thimble through its terminal surface and remove towards the gas cylinder in inlet channel, the bottleneck of gas cylinder is punctured to the needle point of thimble, compressed gas in the gas cylinder gets into in the gasbag through inlet channel, along with compressed gas's release, the gasbag inflation, thereby produce buoyancy, reach the purpose of lifesaving. Compare with current adoption melt water tablet formula's trigger device, the lifesaving aerating device that this application provided just can realize the gasbag to aerify after the pulling stay cord within a few seconds, consequently the utility model provides a lifesaving aerating device and life-saving backpack including this lifesaving device have and trigger timely characteristics for the gasbag can in time be opened after the user falls into water.

Drawings

Fig. 1 is a schematic structural view of a life-saving inflation device of a preferred embodiment provided by the invention;

FIG. 2 is an exploded view of the life saving inflator of FIG. 1;

FIG. 3 is a schematic structural view of the body shown in FIG. 1;

FIG. 4 is a schematic view of the gas cylinder, thimble, and thimble spring mounted in a main body, only a portion of which is shown for ease of viewing;

FIG. 5 is a schematic view of the gas cylinder, spike and spike spring of FIG. 4 removed from the inlet passage;

FIG. 6 is a schematic structural view of the thimble;

FIG. 7 is a schematic view of the construction of the air faucet mounted on an air bag, only a portion of which is shown;

FIG. 8 is a schematic view of the structure of a one-way valve;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a body; 2-air bag; 3-an intake passage; 4-a gas cylinder; 5-a thimble; a 6-L shaped lever arm; 7-pulling a rope; 8-L-shaped mounting grooves; 9-air tap; 10-air nozzle installation cavity; 11-an air intake; 12-an inlet; 13-air nozzle body; 14-a sealing cap; 15-a first sealing ring; 16-a second sealing ring; 17-an annular boss; 18-a stationary tube; 19-an air valve fixing cap; 20-a top rod; 21-a baffle plate; 22-a ram spring; 23-a thimble spring; 24-a sliding portion; 25-needle body; 26-inclined plane; 27-needle groove; 28-card slot; 29-U-shaped fasteners; 30-silica gel sealing ring.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

In the present invention, some orientation words are defined, and in the case that no opposite explanation is made, the used orientation words such as "up, down, left and right" mean that the life-saving backpack provided by the present invention is defined under the normal use condition, and is consistent with the up, down, left and right directions shown in the attached figure 1. The term "inner and outer" refers to the inner and outer contours of the respective component parts. These directional terms are used for ease of understanding and are not intended to limit the scope of the present invention.

Referring to fig. 1, the utility model provides a basic embodiment's lifesaving aerating device includes main part 1, gasbag 2, sets up inlet channel 3 on the main part 1, set up L shape mounting groove 8 on the main part 1, the gas cylinder 4 of seal installation in inlet channel 3 one end, slidable seal installation in the thimble 5 of the inlet channel 3 other end and can drive the thimble 5 in inlet channel 3 towards the gas cylinder 4 removes in order to puncture the trigger mechanism of gas cylinder 4.

The main body 1 is mainly used for mounting various parts and providing a passage for compressed gas to pass through, and can be made of various hard materials, and preferably, the main body 1 is formed by plastic injection molding. Referring to fig. 5, the air intake passage 3 provided in the main body 1 is provided left and right, and referring to fig. 3, L-shaped mounting grooves 8 provided in the main body 1 are provided on the left and front end surfaces of the main body. The left end and the 8 intercommunications of L shape mounting groove of inlet channel 3, the right-hand member of inlet channel 3 is provided with the screw thread to fixed mounting gas cylinder 4.

The airbag 2 is used for containing compressed gas and expanding to generate buoyancy in water, and may be made of various suitable elastic materials, and preferably, the airbag 2 is made of TPU (thermoplastic polyurethane elastomer rubber) material, and a woven mesh layer is arranged on the outer layer of the TPU material to ensure the strength of the airbag. The net layer is formed by adopting high-strength dense net cloth through a corresponding heat treatment pressing process, and the outer surface of the net layer is also provided with a waterproof coating, so that the reusability of the net layer is ensured, and the net layer is not corroded. The air bag 2 is preferably rectangular in shape when not inflated, so as to be stored in the bag storage bag after being folded, and can be completely laid inside the backpack. 2 formula gasbags as an organic whole gasbags inflate nearly oval under the inflation state, and inside gas concentrates not to disperse, and surface of water buoyancy is great, and when length is 43 centimetres, the width is under the gasbag inflation state of 32 centimetres, but bearing 150 kilograms weight keep floating the surface of water and not sink, guarantee that 2 adults use simultaneously.

The air bag 2 is in sealed communication with the air inlet channel 3, that is, the air bag 2 can be directly connected with the air inlet channel 3 in a sealing way, or can be connected with the air inlet channel 3 in a sealing way through other parts. The gas cylinder 4 is filled with compressed gas, and the compressed gas is preferably carbon dioxide. The mouth of the gas cylinder 4 is provided with threads so as to be conveniently arranged on the main body 1. And when the bottle mouth of the gas bottle 4 is formed, a welding structure is reserved, the bottle mouth is sealed in a welding mode such as carbon dioxide welding, and the welding thickness cannot exceed 0.3 mm.

Referring to fig. 2, the trigger mechanism includes an L-shaped lever arm 6 and a pull rope 7 fixed to one end of the L-shaped lever arm 6. The L-shaped pull rod arm 6 is installed in the L-shaped installation groove 8. The L-shaped pull rod arm 6 is hinged to the main body 1, and pulling the pull rope 7 can drive the L-shaped pull rod arm 6 to rotate around the hinged shaft and push the thimble 5 to move towards the gas cylinder 4 so as to puncture the gas cylinder 4. Preferably, the hinge shaft is disposed at a position of the L-shaped lever arm 6 close to the thimble 5, so that the pull rope 7 can be pulled with a small pulling force, and the thimble 5 can be pushed by the L-shaped lever arm 6 to pierce the gas cylinder 4. As shown in fig. 1, the end of the pulling rope 7 may be provided with a head so as not to slip the pulling rope 7 from the hand when the pulling rope 7 is pulled.

The ejector pin 5 is slidably and hermetically mounted at the left end of the air inlet channel 3, that is, the ejector pin 5 is in sealing and sliding connection with the left end of the air inlet channel 3. As shown in fig. 4 and 6, the thimble 5 may include a sliding portion 24 and a needle body 25 fixedly connected to the sliding portion 24, a silicone sealing ring 30 is sleeved on an outer circumferential surface of the sliding portion 24, and the thimble 5 and the air inlet channel 3 are slidably sealed by the silicone sealing ring 30.

When the thimble 5 pierces the gas bottle 4, the compressed gas in the gas bottle 4 enters the gas bag 2 through the gas inlet channel 3 and makes the gas bag 2 keep inflating, and the gas bag 2 keeps inflating, which may be the whole gas channel from the gas bottle 4 to the gas bag 2 keeps sealing state, or the gas inlet of the gas bag 2 has a self-sealing structure, or a one-way gas valve is installed on the gas inlet of the gas bag 2.

When the lifesaving aerating device provided by the basic embodiment is used, a person falling into water pulls the pull rope 7, the L-shaped pull rod arm 6 connected with the pull rope 7 rotates on the main body 1 around the hinged shaft thereof, the other end of the L-shaped pull rod arm 6 rotates along with the rotation, in the process of rotating the other end of the L-shaped pull rod arm 6, the cambered surface at the tail end thereof contacts with the left end of the thimble 5 and pushes the thimble 5 to move towards the gas cylinder 4 in the gas inlet channel 3, the needle point of the thimble 5 pierces the mouth seal of the gas cylinder 4, compressed gas (such as carbon dioxide) in the gas cylinder 4 enters the gasbag 2 through the gas inlet channel 3, the release time of the compressed gas is 3-5 seconds, and along with the release of the compressed gas, the gas pressure in the gas cylinder 4 is balanced with the gas pressure in the gasbag 2, and the gasbag 2 keeps expanding, so as to generate buoyancy, and the person falling into water is ensured to be in a safe state.

In the present invention, the airbag 2 may be connected to the main body 1 in various ways, for example, connected to the main body 1 through a pipe. In order to make the airbag 2 easy and firm to install and reduce the production cost, in a preferred embodiment, the airbag 2 is connected to the air inlet channel 3 through the air nozzle 9 in a sealing manner, as shown in fig. 7, the air nozzle 9 is installed on the air inlet of the airbag 2 in a sealing manner, and the base at the bottom of the air nozzle 9 and the TPU layer inside the airbag 2 can form an integrated structure through hot pressing, so as to ensure the sealing of the connection between the air nozzle 9 and the airbag 2. Be provided with air cock installation cavity 10 on the main part 1, air cock 9 fixed mounting in the air cock installation cavity 10, air cock installation cavity 10 with inlet channel 3 passes through inlet port 11 intercommunication, compressed gas in the air cock installation cavity 10 can pass through the import 12 entering of air cock 9 in the gasbag 2. In this implementation, through installation air cock 9 on gasbag 2, gasbag 2 and air cock 9 are a part on the whole, when installing gasbag 2, only need with air cock 9 install in the air cock installation cavity 10 on main part 1 can, air cock 9 can firmly be fixed on gasbag 2 through technologies such as hot-pressing simultaneously to guarantee the leakproofness.

In order to make the air faucet 9 more convenient to mount, on the basis of the above embodiment, it is further preferable that, as shown in fig. 2, the air faucet 9 includes an air faucet body 13 and a sealing cap 14, and the air faucet mounting cavity 10 is a cavity with two open ends. In fig. 2, the air nozzle installation chamber 10 is shown separated from the main body 1 for easy observation, and it should be noted that the air nozzle installation chamber 10 is actually located inside the main body 1. The air tap installation cavity 10 can be a single tubular part and fixed in the main body 1 in a mode of injection molding and the like, or the air tap installation cavity 10 is a cavity formed in the main body 1. Referring to fig. 7, the air faucet body 13 is tubular with openings at the upper and lower ends, and the lower end of the air faucet body 13 is hermetically connected with the airbag 2 by hot pressing or the like. Referring to fig. 2, the upper end of air cock body 13 is inserted behind air cock installation cavity 10 with sealing cap 14 sealing connection, referring to fig. 7, air cock body 13's outer peripheral face middle part is provided with the ring channel, import 12 sets up on the tank bottom of ring channel, the ring channel with form the chamber of admitting air between the lateral wall of air cock installation cavity 10, inlet port 11 with the chamber intercommunication of admitting air. In this embodiment, through setting up air cock 9 as including air cock body 13 and sealing cap 14, air cock body 13 and gasbag 2 fixed connection structure as an organic whole, when the installation, only need insert air cock body 13 in the air cock installation cavity 10 on main part 1, the upper end rethread sealing cap 14 is fixed can.

In a further preferred embodiment of the present invention, as shown in fig. 2, the air faucet 9 further includes a first sealing ring 15 and a second sealing ring 16, as shown in fig. 7, the air faucet body 13 is in a circular tube shape, and the air faucet body 13 is provided with an annular boss 17 on the outer surface of the end connected to the air bag 2. The annular boss 17 presses on the lower end face of the main body 1, the first sealing ring 15 is arranged between the annular boss 17 and the lower end face of the main body 1, the sealing cap 14 presses on the upper surface of the main body 1, and the second sealing ring 16 is arranged between the sealing cap 14 and the upper end face of the main body 1.

In the present invention, in order to keep the air bag 2 in the inflated state and reduce the sealing requirement of the air inlet path, preferably, an one-way air valve is further installed on the air tap 9.

Wherein the one-way air valve can adopt various existing one-way air inlet valves, in a preferred embodiment of the present invention, as shown in fig. 8, the one-way air valve comprises a fixed pipe 18, an air valve fixing cap 19 connected with the upper end of the fixed pipe 18 and communicated with the fixed pipe 18, a push rod 20 passing through the air valve fixing cap 19 and the fixed pipe 18, a baffle 21 fixedly installed at one end of the push rod 20 and located at the outside of the second end of the fixed pipe 18, and a push rod spring 22 installed in the fixed pipe 18 and capable of driving the push rod 20 to move so that the baffle 21 closes the second end of the fixed pipe 18.

The two ends of the fixed pipe 18 are open, the air valve fixing cap 19 is detachably mounted at an opening at the upper end of the fixed pipe 18, the ejector rod spring 22 is arranged in an inner hole of the fixed pipe 18, the ejector rod spring 22 is sleeved on the ejector rod 20, the upper end of the ejector rod spring 22 is fixedly connected with an ejector rod spring buckle on the ejector rod 20, and the lower end of the ejector rod spring 22 is pressed on a step surface of the hole wall of the inner hole of the fixed pipe 18. The peripheral surface of the air valve fixing cap 19 is hermetically connected with the inner hole wall of the air faucet body 13. The upper surface of the baffle 21 is a plane which can be attached to the lower end surface of the fixed pipe 18, and a silicone sealing ring may be provided between the baffle 21 and the fixed pipe 18 in order to ensure the sealing effect between the baffle 21 and the lower end surface of the fixed pipe 18.

When the one-way gas valve provided by the above embodiment is used, compressed gas entering the gas nozzle 9 sequentially enters the gas valve fixing cap 19 and the fixing tube 18, and then pushes the baffle plate 21 away against the elastic force of the ejector spring 22, the ejector 20 is pushed open due to the pressure of the gas, the compressed gas enters the airbag 2, the ejector spring 22 is compressed during the period that the ejector 20 is pushed open, the pressure is continuously reduced in the process that the gas cylinder 4 releases the gas, when the gas release pressure is lower than a certain threshold value or the pressure is lower than the rebound elastic force of the ejector spring 22, that is, when the pressure of the gas in the fixing tube 18 on the baffle plate 21 is smaller than the sum of the pressures of the ejector spring 22 and the gas in the airbag 2 on the baffle plate 21, the ejector spring 22 drives the ejector 20 to rebound, at this time, the ejector 20 returns to the original position, and the baffle plate 21 closes the opening at the lower end of the fixing tube 18, thereby sealing the airbag 2.

Meanwhile, after the life-saving inflator is used up, the sealing cap 14 at the upper end of the air nozzle body 13 can be opened, and the push rod 20 is pushed downwards manually, so that the gas in the air bag 2 can be released manually. Then the gas cylinder 4 is replaced, so that the secondary use of the lifesaving aerating device can be realized.

As shown in fig. 4, in the preferred embodiment of the present invention, the thimble 5 is sleeved with a thimble spring 23, and the elasticity of the thimble spring 23 separates the thimble 5 from the gas cylinder 4. In this embodiment, by providing the ejector pin spring 23, the ejector pin 5 can be automatically restored to the initial position when the trigger mechanism is restored to the original position, so that the secondary use of the lifesaving inflation device can be facilitated.

In the present invention, in order to make the thimble 5 pierce the opening of the gas cylinder 4, the compressed gas in the gas cylinder 4 can be released quickly, preferably, as shown in fig. 6, the front end face of the needle body 25 is an inclined plane 26, a needle groove 27 has been opened on the circumferential face of the needle body 25, and the needle groove 27 passes through the inclined plane 26 at the front end of the needle body 25. The angle between the inclined surface 26 and the axial direction of the needle body 25 is preferably 45 degrees.

In order to reduce the possibility that the life-saving inflator is triggered by a user by mistake due to the fact that the user pulls the pull rope 7, it is preferable that, as shown in fig. 2 and 3, the upper and lower surfaces of the main body 1 are provided with two clamping grooves 28, two clamping grooves 28 are arranged at the opening of the L-shaped mounting groove 8, a U-shaped buckle 29 is arranged at the opening of the L-shaped mounting groove 8, two free ends of the U-shaped buckle 29 are respectively clamped in the clamping grooves 28 at the upper and lower surfaces of the main body 1, the U-shaped buckle 29 is arranged at one end of the L-shaped pull rod arm 6 connected with the pull rope 7, when the pull rope 7 pulls the L-shaped pull rod arm 6 to rotate around the hinge shaft, one end of the L-shaped pull rod arm 6 connected with the pull rope 7 rotates out of the L-shaped mounting groove 8, and due to the blockage of the U-shaped buckle 29, the user needs to pull the pull rope 7 with a large force, the L-shaped lever arm 6 can push the U-shaped latch 29 down from the latching slot 28 and rotate out of the L-shaped mounting slot 8.

The utility model also provides a lifesaving knapsack, this lifesaving includes knapsack body and foretell lifesaving aerating device. The backpack body can be various existing backpacks. An air bag storage bag is arranged at the bottom in the backpack body, and an air bag 2 is placed in the air bag storage bag. The air bag storage bag is provided with a first opening which enables the air bag 2 to stretch out of the air bag storage bag after being inflated, and the first opening is closed through a magic tape or a snap fastener. Specifically, the bag is deposited to gasbag can be by the tubular structure that two cloth enclose, and its length is the same with the width of gasbag 2, and the one end of two cloth is all fixed on the knapsack body, and the other end passes through magic subsides or snap-fastener and seals, and the magic is pasted and can be adopted the weakening magic subsides.

In the structure, with 2 built-in and the inside bottom of knapsack body of gasbag, 2 frivolous and folding of being convenient for of gasbag, put into the gasbag after folding and deposit the bag, the gasbag is deposited the bag skin and can be adopted the warning and use the orange, first opening (pocket interface) adopts the reduction magic subsides, can guarantee to close 2 folding deposit mouths of gasbag, can guarantee again under the emergency, the personnel of falling into the water can't open under the condition of knapsack tiling gasbag, directly draw trigger device to inflate, gasbag 2 also can strut the gasbag and deposit the bag, carry out the inflation of gaseous release.

An outer storage bag is arranged at the bottom of the outer side of the backpack body, the main body 1, the gas cylinder 4 and the trigger mechanism are placed in the outer storage bag, a second opening capable of enabling the pull rope 7 to be pulled out is arranged on the outer storage bag, and the second opening is sealed through a zipper.

When the life-saving backpack is used, when a person falling into the water meets the state of falling into the water, the person falling into the water needs to pull the backpack open, empty other articles in the backpack, unfold the air bag 2 hidden at the bottom of the backpack, pull the opening of the backpack to be closed, trigger the pull rope 7 to pull outwards with force, trigger the L-shaped pull rod arm 6 to pop out the U-shaped buckle 29, the tail end of the L-shaped pull rod arm 6 props against the built-in thimble 5 to pierce the opening of the air bottle 4 filled with gas such as carbon dioxide, at the moment, the opening of the air bottle 4 is broken, the built-in liquid carbon dioxide gas reaches the air nozzle 9 and the one-way air valve through the air inlet channel 3 by the air pressure, the air pressure in the air bottle 4 can prop open the one-way air valve, the air valve enters the air bag 2 by the release time of 3-5 seconds of the compressed gas in the air bottle 4, the air pressure in the air bottle 4 is balanced with the air pressure in the air bag 2, at the moment, the one-way air valve is closed, and the air bag 2 is closed, the carbon dioxide gas filled into the air bag 2 can not be released, so that the purpose of generating buoyancy by long-term expansion of the air bag 2 is achieved. The air bag 2 is inflated to be airtight, the backpack body can bear the weight of a person within 150 kilograms and still float on the water surface in water, the buoyancy attenuation degree of the air bag 2 is not higher than 10% within 48 hours, enough safe rescue time can be reserved, and the safety of personnel is guaranteed.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts or intervening parts. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A lifesaving aerating device is characterized by comprising a main body (1), an air bag (2), an air inlet channel (3) arranged on the main body (1), an air bottle (4) hermetically arranged at one end of the air inlet channel (3), a thimble (5) slidably and hermetically arranged at the other end of the air inlet channel (3) and a trigger mechanism capable of driving the thimble (5) to move towards the air bottle (4) in the air inlet channel (3) to puncture the air bottle (4), wherein the air bag (2) is hermetically communicated with the air inlet channel (3), the air bottle (4) is filled with compressed air, the trigger mechanism comprises an L-shaped pull rod arm (6) and a pull rope (7) fixed at one end of the L-shaped pull rod arm (6), an L-shaped mounting groove (8) is formed in the main body (1), the L-shaped pull rod arm (6) is mounted in the L-shaped mounting groove (8), the L-shaped pull rod arm (6) is hinged to the main body (1), the pull rope (7) can be pulled to drive the L-shaped pull rod arm (6) to rotate around a hinged shaft and push the thimble (5) to move towards the gas bottle (4) so as to puncture the gas bottle (4), and after the thimble (5) punctures the gas bottle (4), compressed gas in the gas bottle (4) enters the gas bag (2) through the gas inlet channel (3) and enables the gas bag (2) to keep expanding.

2. A lifesaving aerating device as defined in claim 1 wherein said air bag (2) is sealingly connected to said air inlet channel (3) by means of an air nozzle (9), said main body (1) further comprises an air nozzle installation cavity (10), said air inlet of said air bag (2) is sealingly provided with an air nozzle (9), said air nozzle (9) is fixedly installed in said air nozzle installation cavity (10), said air nozzle installation cavity (10) is communicated with said air inlet channel (3) by means of an air inlet hole (11), and compressed air in said air nozzle installation cavity (10) can enter said air bag (2) through an inlet (12) of said air nozzle (9).

3. The lifesaving aerating device of claim 2, wherein the air nozzle (9) comprises an air nozzle body (13) and a sealing cap (14), the air nozzle installation cavity (10) is a cavity with two open ends, the air nozzle body (13) is tubular with two open ends, one end of the air nozzle body (13) is hermetically connected with the air bag (2), the other end of the air nozzle body (13) is inserted into the air nozzle installation cavity (10) and then is hermetically connected with the sealing cap (14), an annular groove is arranged in the middle of the outer peripheral surface of the air nozzle body (13), the inlet (12) is arranged on the bottom of the annular groove, an air inlet cavity is formed between the annular groove and the side wall of the air nozzle installation cavity (10), and the air inlet (11) is communicated with the air inlet cavity.

4. A life-saving aerating device as defined in claim 3 wherein the air tap (9) further comprises a first sealing ring (15) and a second sealing ring (16), the air tap body (13) is tubular, an annular boss (17) is provided on the outer surface of the end of the air tap body (13) connected to the air bag (2), the annular boss (17) presses on the lower end surface of the main body (1), the first sealing ring (15) is disposed between the annular boss (17) and the lower end surface of the main body (1), the sealing cap (14) presses on the upper surface of the main body (1), and the second sealing ring (16) is disposed between the sealing cap (14) and the upper end surface of the main body (1).

5. A lifesaving aerating device as defined in claim 3 or 4 wherein said nozzle (9) is further fitted with a one-way gas valve through which compressed gas enters the air bag (2).

6. The life-saving inflator according to claim 5, wherein the one-way air valve comprises a fixed tube (18), an air valve fixing cap (19) connected with a first end of the fixed tube (18) and communicated with the fixed tube (18), a push rod (20) penetrating the air valve fixing cap (19) and the fixed tube (18), a baffle plate (21) fixedly installed at one end of the push rod (20) and located outside a second end of the fixed tube (18), and a push rod spring (22) installed in the fixed tube (18) and capable of driving the push rod (20) to move so that the baffle plate (21) closes the second end of the fixed tube (18), wherein the outer peripheral surface of the air valve fixing cap (19) is in sealing connection with the inner hole wall of the air nozzle body (13).

7. The lifesaving aerating device of claim 1, wherein a thimble spring (23) is sleeved on the thimble (5), and the elasticity of the thimble spring (23) enables the thimble (5) to be separated from the gas cylinder (4); thimble (5) include with air inlet channel (3) sliding seal connects sliding part (24) and with sliding part (24) fixed connection's needle body (25), the preceding terminal surface of needle body (25) is inclined plane (26), needle groove (27) have been seted up on the periphery of needle body (25), needle groove (27) pass inclined plane (26) of needle body (25) front end.

8. The lifesaving aerating device of claim 1, wherein when the L-shaped pull rod arm (6) is pulled by the pull rope (7) to rotate around the hinge shaft, one end of the L-shaped pull rod arm (6) connected with the pull rope (7) rotates out of the L-shaped mounting groove (8), the upper and lower surfaces of the main body (1) are respectively provided with a clamping groove (28), the two clamping grooves (28) are arranged at the opening of the L-shaped mounting groove (8), the opening of the L-shaped mounting groove (8) is provided with a U-shaped buckle (29), the two free ends of the U-shaped buckle (29) are respectively clamped in the clamping grooves (28) on the upper and lower surfaces of the main body (1), and the U-shaped buckle (29) is positioned at one end of the L-shaped pull rod arm (6) connected with the pull rope (7).

9. The lifesaving aerating device of claim 1 wherein the air bag (2) is made of TPU material, and a woven mesh layer is arranged on the outer layer of the TPU material; the airbag (2) is rectangular when not inflated.

10. A life-saving backpack, characterized in that, including the knapsack body and the life-saving aerating device of any one of claims 1-9, the bottom in the knapsack body is provided with the gasbag and deposits the bag, gasbag (2) are placed in the gasbag deposits the bag, have on the gasbag deposits the bag and make gasbag (2) aerify the first opening that can stretch out from in the gasbag deposits the bag, first opening is sealed through magic subsides or snap-fastener, the outside bottom of knapsack body is provided with outer bag of depositing, main part (1), gas cylinder (4) and trigger mechanism place in outer bag of depositing, be provided with on outer bag of depositing and can make stay cord (7) pulled out the second opening, the second opening is sealed through the zip fastener.