Automatic inflation device for life jacket and method of use thereof

Abstract

The present invention relates to an automatic inflation device for a life jacket and a method of using the same, comprising: a housing; a rotating shaft rotatably mounted in the housing, a coil spring connected between the rotating shaft and the inner wall of the housing; two clamping blocks rotatably connected to the housing and clamping the rotating shaft, a water-soluble paper sheet connected between the two clamping blocks; a gas cylinder mounted on the housing corresponding to the gas outlet; and a cutting knife drivingly connected to the rotating shaft and arranged corresponding to the bottle mouth of the gas cylinder, the water-soluble paper sheet dissolving in water so that the two clamping blocks release the rotating shaft, and then the coil spring drives the rotating shaft to rotate, so as to drive the cutting knife to cut the sealing film of the bottle mouth of the gas cylinder. The present invention effectively solves the problem that the life jacket excitation device has large limitations and low reliability. By providing an automatic inflation device, the life jacket can automatically inflate the air bag of the life jacket when it encounters water, thereby ensuring the safety of the wearer and improving the reliability of the life jacket. Moreover, the automatic inflation device can be applied to inflatable life jackets and has strong adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of water lifesaving, in particular to an automatic inflation device for a life jacket and a use method thereof. Background Art

[0002] With the rapid development of the marine economy, maritime tourism and passenger transport are becoming increasingly frequent, and the resulting maritime accidents are also increasing. Once an unfortunate fall into the water occurs, life jackets are one of the most direct and effective life-saving equipment, which can effectively avoid the risk of drowning and death.

[0003] Life jackets can be divided into foam life jackets and inflatable life jackets. The quality of a life jacket is mainly measured by whether it has good reliability. Life jackets are usually prepared but not used. Once an accident occurs, they are required to be immediately usable, effective, safe and reliable. Traditional inflatable life jackets are mainly activated manually and in tablet form, but they have certain limitations and unreliability. When a person falls into the water, it is often difficult to manually activate the life jacket in a timely manner due to high mental tension or injury; the tablet activation method, although it can be automatically activated when it encounters water, is often affected by factors such as water vapor, temperature, and water in the environment, causing the drug to become damp and lose its effectiveness. When the life jacket needs to be inflated, it cannot be inflated because the drug is not completely dissolved, and when the life jacket does not need to be inflated, it is accidentally inflated due to moisture. These two situations are very unfavorable for normal storage and self-rescue. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide an automatic inflation device for a life jacket and a method of using the same, thereby solving the problem that the life jacket activation device has large limitations and low reliability. By providing an automatic inflation device, the life jacket can automatically inflate the air bag when it encounters water, thereby ensuring the safety of the wearer and improving the reliability of the life jacket. Moreover, the automatic inflation device can be applied to inflatable life jackets and has strong adaptability.

[0005] The technical solution to achieve the above purpose is:

[0006] The present invention provides an automatic inflation device for a life jacket, comprising:

[0007] A shell for installation on a life jacket, wherein a gas outlet is provided on a side wall of the shell corresponding to the air bag of the life jacket;

[0008] A rotating shaft rotatably mounted in the housing, with a coil spring connected between the rotating shaft and the inner wall of the housing;

[0009] Two clamping blocks rotatably connected to the housing and used to clamp the rotating shaft, with a water-soluble paper sheet connected between the two clamping blocks;

[0010] A gas cylinder corresponding to the gas outlet is mounted on the shell, and the mouth of the gas cylinder extends into the shell; and

[0011] The cutter connected to the rotating shaft and arranged corresponding to the bottle mouth of the gas cylinder is driven to dissolve the water-soluble paper sheet in water, so that the two clamping blocks loosen the rotating shaft, and then the winding spring drives the rotating shaft to rotate, so as to drive the cutter to cut the sealing film of the bottle mouth of the gas cylinder, so that the gas in the gas cylinder is filled into the air bag of the life jacket from the gas outlet.

[0012] The present invention adopts an automatic inflation device for life jackets, which connects two clamping blocks by using a water-soluble paper sheet to tie and connect the two clamping blocks, so that the two clamping blocks clamp the rotating shaft to prevent the rotating shaft from rotating. When the water-soluble paper sheet dissolves in water, the pulling force between the two clamping blocks is lost, thereby loosening the rotating shaft. The rotating shaft rotates under the action of the rebound force of the coil spring to drive the cutting knife to cut the sealing film of the bottle mouth of the gas cylinder, so that the gas in the gas cylinder is filled into the air bag of the life jacket from the gas outlet, thereby solving the problem that the life jacket excitation device has large limitations and low reliability. By providing an automatic inflation device, the life jacket can automatically inflate the air bag of the life jacket when it meets water, thereby ensuring the safety of the wearer and improving the reliability of the life jacket. In addition, the automatic inflation device can be applied to inflatable life jackets and has strong adaptability.

[0013] A further improvement of the automatic inflation device for life jackets of the present invention is that it also includes a cam corresponding to the gas cylinder and fixedly sleeved on the rotating shaft and a sliding channel corresponding to the cam and formed in the housing, and the cutter is arranged on the top of the cam and slidably arranged in the sliding channel;

[0014] The cam is driven to rotate by the rotating shaft, so that the cam pushes the cutting knife to move along the sliding channel toward the direction close to the gas cylinder, so that the cutting knife cuts the sealing film.

[0015] A further improvement of the automatic inflation device for life jackets of the present invention is that it also includes a connecting shaft that is rotatably connected to the shell and partially extends out of the shell in response to the water-soluble paper sheet, and a rotor that is fixed to the connecting shaft and located between the two clamping blocks, wherein the width of the rotor is smaller than the spacing between the two clamping blocks, and the length of the rotor is larger than the spacing between the two clamping blocks;

[0016] The connecting shaft is rotated to drive the rotor to rotate, so that the rotor pushes the two clamping blocks to rotate away from each other, thereby breaking the water-soluble paper sheet and causing the two clamping blocks to release the rotating shaft.

[0017] A further improvement of the automatic inflation device for life jackets of the present invention is that it also includes an arc-shaped plate fixedly connected to the portion of the connecting shaft extending out of the housing and a drawstring with one end fixedly connected to the arc-shaped plate;

[0018] By pulling the pull rope, the arc plate drives the connecting shaft to rotate.

[0019] A further improvement of the automatic inflation device for life jackets of the present invention is that the rotating shaft comprises a first shaft body rotatably connected to the housing and clamped between two clamping blocks, a second shaft body drivingly connected to the first shaft body and connected to the coil spring, and a third shaft body drivingly connected to the second shaft body and drivingly connected to the cutting knife;

[0020] The clamping block matches the first shaft body in an arc shape, and a locking boss protruding outward is formed at the position of the clamping block close to the first shaft body, and a limiting boss protruding outward is formed at the position of the first shaft body corresponding to the locking boss. The first shaft body is clamped by two clamping blocks so that the locking boss clamps the limiting boss, thereby preventing the rotating shaft from rotating.

[0021] A further improvement of the automatic inflation device for life jackets of the present invention is that a portion of the first shaft body close to the end of the second shaft body protrudes outward to form a protruding portion, and a portion of the end of the second shaft body close to the first shaft body corresponding to the protruding portion is recessed inward to form a recessed portion;

[0022] The protruding portion is clamped in the recessed portion so that the end of the first shaft body is meshed with the end of the second shaft body, so that the first shaft body and the second shaft body rotate synchronously.

[0023] A further improvement of the automatic inflation device for life jackets of the present invention is that the cross section of the end of the second shaft body close to the third shaft body is non-circular, and the end of the third shaft body close to the second shaft body is provided with a through hole matching the end of the second shaft body;

[0024] The end of the second shaft body is inserted into the through hole so that the end of the second shaft body is meshed with the end of the third shaft body, so that the second shaft body and the third shaft body rotate synchronously.

[0025] A further improvement of the automatic inflation device for life jackets of the present invention is that it also includes a partition plate fixedly arranged in the shell and located between the air outlet and the water-soluble paper sheet, the partition plate is sleeved on the third shaft body, and the partition plate is connected to the third shaft body through a bearing, so that the third shaft body can rotate relative to the partition plate.

[0026] The present invention also provides a method for using the automatic inflation device for a life jacket, comprising the following steps:

[0027] Provide the automatic inflation device, install the shell on the life jacket, and connect the air outlet to the air bag of the life jacket;

[0028] When the life jacket meets water, the water-soluble paper sheet dissolves in water, causing the two clamping blocks to loosen the rotating shaft, and then the coil spring drives the rotating shaft to rotate, driving the cutter to cut the sealing film of the bottle mouth of the gas cylinder, so that the gas in the gas cylinder is filled into the air bag of the life jacket from the gas outlet.

[0029] A further improvement of the method for using the automatic inflation device for a life jacket of the present invention is that it also includes a connecting shaft that is rotatably connected to the housing and partially extends out of the housing in response to the water-soluble paper sheet, a rotor that is fixed to the connecting shaft and located between two clamping blocks, an arc plate that is fixed to the extended portion of the connecting shaft, and a pull rope connected to the arc plate;

[0030] By pulling the pull rope, the arc plate drives the connecting shaft to rotate, thereby driving the rotor to push the two clamping blocks to rotate away from each other, so as to break the water-soluble paper sheet and make the two clamping blocks loosen the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a schematic diagram of the overall structure of the automatic inflation device for life jackets of the present invention.

[0032] Figure 2 for Figure 1 Cross-sectional view along the JJ direction.

[0033] Figure 3 It is an exploded schematic diagram of the automatic inflation device for life jackets of the present invention, wherein the gas cylinder is omitted.

[0034] Figure 4 It is an enlarged schematic diagram of the clamping block part of the automatic inflation device for life jackets of the present invention.

[0035] Figure 5 It is an enlarged schematic diagram of the first shaft portion of the automatic inflation device for a life jacket of the present invention.

[0036] Figure 6 It is an enlarged schematic diagram of the connecting shaft part of the automatic inflation device for life jackets of the present invention.

[0037] Figure 7 It is an enlarged schematic diagram of the third shaft portion of the automatic inflation device for life jackets of the present invention.

[0038] Figure 8 It is an enlarged schematic diagram of the partition plate part of the automatic inflation device for life jackets of the present invention.

[0039] Fig. 9 It is an enlarged schematic diagram of the locking ring part of the automatic inflation device for life jackets of the present invention.

[0040] Fig.10 It is an enlarged schematic diagram of the air outlet and the sliding channel part of the automatic inflation device for life jackets of the present invention. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] The present invention adopts an automatic inflation device for life jackets, which connects two clamping blocks by using a water-soluble paper sheet to tie and tie, so that the two clamping blocks clamp the rotating shaft to prevent the rotating shaft from rotating. When the water-soluble paper sheet dissolves in water, the tie force between the two clamping blocks is lost, thereby loosening the rotating shaft. The rotating shaft rotates under the action of the rebound force of the coil spring to drive the cutter to cut the sealing film of the gas cylinder bottle mouth, so that the gas in the gas cylinder is filled into the air bag of the life jacket from the gas outlet, solving the problem that the life jacket excitation device has large limitations and low reliability. By providing an automatic inflation device, when the life jacket meets water, it can automatically inflate the air bag of the life jacket, thereby ensuring the safety of the wearer and improving the reliability of the life jacket. Moreover, the automatic inflation device can be applied to inflatable life jackets and has strong adaptability. The automatic inflation device for life jackets of the present invention is described below in conjunction with the accompanying drawings.

[0043] See also Figure 1 , Figure 1 The overall structure diagram of the automatic inflation device for life jackets of the present invention is shown below. Figure 1 , the automatic inflation device for life jackets of the present invention is described.

[0044] like Figure 1-3 As shown, the automatic inflation device for a life jacket of the present invention comprises:

[0045] A shell for installation on a life jacket, wherein a gas outlet 18 is provided on the side wall of the shell corresponding to the air bag of the life jacket;

[0046] A rotating shaft rotatably mounted in the housing, with a coil spring 141 connected between the rotating shaft and the inner wall of the housing;

[0047] Two clamping blocks 11 are rotatably connected to the housing and clamp the rotating shaft, and a water-soluble paper sheet 112 is connected between the two clamping blocks 11;

[0048] A gas cylinder 12 is mounted on the housing corresponding to the gas outlet 18, and the mouth of the gas cylinder 12 extends into the housing; and

[0049] The cutter 16 connected to the rotating shaft and arranged corresponding to the bottle mouth of the gas cylinder 12 is driven to dissolve the water-soluble paper sheet 112 in water, so that the two clamping blocks 11 loosen the rotating shaft, and then the coil spring 141 drives the rotating shaft to rotate, so as to drive the cutter 16 to cut the sealing film of the bottle mouth of the gas cylinder 12, so that the gas in the gas cylinder 12 is filled into the air bag of the life jacket from the gas outlet 18.

[0050] As a preferred embodiment of the present invention, Figure 2 , Figure 3 , Figure 7 and Fig.10As shown, it also includes a cam 152 corresponding to the gas cylinder 12 and fixedly sleeved on the rotating shaft, and a sliding channel 17 corresponding to the cam 152 and formed in the housing, and the cutter 16 is arranged on the top of the cam 152 and slidably arranged in the sliding channel 17;

[0051] The cam 152 is driven to rotate by the rotating shaft, so that the cam 152 pushes the cutting knife 16 to move along the sliding channel 17 toward the direction close to the gas cylinder 12, so that the cutting knife 16 cuts the sealing film.

[0052] Further, combined with Figure 3 , Figure 4 and Figure 6 As shown, it also includes a connecting shaft 31 that is rotatably connected to the shell body corresponding to the water-soluble paper sheet 112 and partially extends out of the shell body (the connecting shaft 31 and the rotating shaft are not on the same axis), and a rotor 313 that is fixed to the connecting shaft 31 and is located between the two clamping blocks 11, wherein the width of the rotor 313 is smaller than the spacing between the two clamping blocks 11, and the length of the rotor 313 is greater than the spacing between the two clamping blocks 11;

[0053] By rotating the connecting shaft 31, the rotor 313 is driven to rotate, so that the rotor 313 pushes the two clamping blocks 11 to rotate away from each other, thereby breaking the water-soluble paper sheet 112, so that the two clamping blocks 11 release the rotating shaft.

[0054] Preferably, the rotor 313 may be olive-shaped with pointed ends.

[0055] Specifically, it also includes an arc-shaped plate 311 fixedly connected to the portion of the connecting shaft 31 extending out of the housing, and a pull rope 312 with one end fixedly connected to the arc-shaped plate 311;

[0056] By pulling the pull rope 312 , the arc plate 311 drives the connecting shaft 31 to rotate. When a person falls into the water, the water-soluble paper sheet 112 can be torn apart by manually pulling the pull rope 312 to cut the sealing film at the mouth of the gas cylinder 12 .

[0057] Further, combined with Figure 2 , Figure 4 and Figure 5 As shown, the rotating shaft includes a first shaft body 13 rotatably connected to the housing and clamped between two clamping blocks 11, a second shaft body 14 drivingly connected to the first shaft body 13 and connected to a coil spring 141, and a third shaft body 15 drivingly connected to the second shaft body 14 and connected to a cutting knife 16;

[0058] The clamping block 11 matches the first shaft body 13 and is arc-shaped, and a locking boss 111 protruding outward is formed at a position of the clamping block 11 close to the first shaft body 13, and a limiting boss 131 protruding outward is formed at a position of the first shaft body 13 corresponding to the locking boss 111. The first shaft body 13 is clamped by two clamping blocks 11, so that the locking boss 111 clamps the limiting boss 131, thereby preventing the rotating shaft from rotating.

[0059] Further, combined with Figure 5 and Figure 3 As shown, the portion of the first shaft body 13 near the end of the second shaft body 14 protrudes outward to form a protruding portion, and the portion of the end of the second shaft body 14 near the first shaft body 13 corresponding to the protruding portion is recessed inward to form a recessed portion;

[0060] The protruding portion is clamped in the recessed portion, so that the end of the first shaft body 13 is meshed with the end of the second shaft body 14 , so that the first shaft body 13 and the second shaft body 14 rotate synchronously.

[0061] Furthermore, the cross section of the end of the second shaft body 14 close to the third shaft body 15 is non-circular, and the end of the third shaft body 15 close to the second shaft body 14 is provided with a through hole 151 matching the end of the second shaft body 14;

[0062] The end of the second shaft body 14 is inserted into the through hole 151 so that the end of the second shaft body 14 is meshed with the end of the third shaft body 15 , so that the second shaft body 14 and the third shaft body 15 rotate synchronously.

[0063] Further, combined with Figure 8 As shown, it also includes a partition plate 19 fixed in the shell and located between the air outlet 18 and the water-soluble paper sheet 112. The partition plate 19 is sleeved on the third shaft body 15, and the partition plate 19 is connected to the third shaft body 15 through a bearing, so that the third shaft body 15 can rotate relative to the partition plate 19, and the partition plate 19 is used to separate the area where the water-soluble paper sheet 112 is located and the area where the air outlet 18 is located. After the device encounters water, water can enter the shell from the position of the shell near the pull rope 312, thereby dissolving the water-soluble paper sheet 112, and then the partition plate 19 prevents water from flowing to the air outlet 18, thereby preventing water from entering the air bag of the life jacket through the air outlet 18.

[0064] Specific, combined Figure 2 , Figure 3 and Fig. 9As shown, the shell includes a first base 21, a second base 22 and a locking ring 23 connected to the first base 21 and the second base 22, the first shaft 13 and the clamping block 11 are both arranged in the first base 21, the sliding channel 7 and the air outlet 18 are both arranged in the second base 22, the partition plate 19 is fixed in the locking ring 23 and is located between the water-soluble paper sheet 112 and the air outlet 18, the first base 21, the second base 22 and the locking ring 23 are all fixedly connected by a snap connection, and a sealing ring 231 is arranged between the locking ring 23 and the second base 22 to prevent water from flowing into the internal space of the second base 22, thereby preventing water from entering the air bag of the life jacket through the water outlet 18.

[0065] Preferably, combined Figure 8 and Fig. 9 As shown, the partition plate 19 is provided with a block 191 corresponding to the locking ring 23, and the top of the block 191 is an inclined surface, and the locking ring 23 is formed with a slot 232 corresponding to the block 191, and there are protrusions on both sides of the slot 232, and the top surface of the protrusion matches the block 191 to form an inclined surface, the partition plate 19 is fitted to the locking ring 23, and the partition plate 19 is rotated, so that the inclined surface of the block is fitted to the inclined surface of the protrusion 191 and moves until the block enters the slot 232, so that the partition plate 19 is connected with the locking ring 23 by snapping.

[0066] The specific implementation of the present invention is as follows:

[0067] The automatic inflation device is installed on the life jacket, and the air outlet 18 is connected to the air bag of the life jacket. At this time, the coil spring 141 is compressed and has a certain resilience. A water-soluble paper sheet 112 is connected between the two clamping blocks 11, so that one end of the two clamping blocks 11 is connected by a knot, and a pulling force is provided to the two clamping blocks 11 in a direction of approaching each other, so that the limiting boss 111 of the clamping block 11 can tightly clamp the limiting boss 131 of the first shaft body 13, so that the first shaft body 13 is clamped between the two clamping blocks 11 to prevent the rotation of the rotating shaft;

[0068] When the user falls into the water wearing the life jacket, if the speed of water entering the first base 21 is fast, the water-soluble paper sheet 112 will dissolve in water, and the two clamping blocks 11 will lose the pulling force to approach each other, so that the locking boss 111 of the clamping block 11 releases the limiting boss 131 of the first shaft body 13, and the rebound force of the coil spring 141 drives the second shaft body 14 to rotate, so that the rotating shaft rotates as a whole, and the third rotating shaft 15 drives the cam 152 to rotate when rotating, so that the cam 152 pushes the cutting knife 16 to move along the sliding channel 17 toward the direction close to the gas cylinder 12, thereby cutting the sealing film of the bottle mouth of the gas cylinder 12, so that the gas in the gas cylinder 12 enters the air bag of the life jacket through the gas outlet 18;

[0069] When the user falls into the water wearing the life jacket, if the speed at which water enters the first base 21 is slow, the user can pull the pull rope 312 by himself, so that the connecting shaft 31 drives the rotor 313 to rotate, so that the rotor 313 pushes the end of the clamping block 11 connected to the water-soluble paper sheet 112, so that the two clamping blocks 11 move away from each other near the ends of the water-soluble paper sheet 112, so that the water-soluble paper sheet 112 breaks, so that the two clamping blocks 11 cannot clamp the first shaft body 13, and the second shaft body 14 rotates under the drive of the coil spring 141, so that the shaft rotates as a whole, and the third shaft 15 rotates, driving the cam 152 to rotate, so that the cam 152 pushes the cutting knife 16 to move along the sliding channel 17 towards the direction close to the gas cylinder 12, thereby cutting the sealing film at the mouth of the gas cylinder 12, so that the gas in the gas cylinder 12 enters the air bag of the life jacket through the gas outlet 18.

[0070] The present invention also provides a method for using the automatic inflation device for a life jacket, comprising the following steps:

[0071] The automatic inflation device is provided, the housing is mounted on a life jacket, and the air outlet 18 is connected to the air bag of the life jacket;

[0072] When the life jacket comes into contact with water, the water-soluble paper sheet 112 dissolves in water, causing the two clamping blocks 11 to loosen the rotating shaft, and then the coil spring 141 drives the rotating shaft to rotate, thereby driving the cutter 16 to cut the sealing film at the bottle mouth of the gas cylinder 12, so that the gas in the gas cylinder 12 is filled into the air bag of the life jacket from the gas outlet 18.

[0073] Furthermore, it also includes a connecting shaft 31 that is rotatably connected to the housing and partially extends out of the housing corresponding to the water-soluble paper sheet 112, a rotor 313 that is fixed to the connecting shaft 31 and located between the two clamping blocks 11, an arc plate 311 that is fixed to the extended portion of the connecting shaft 31, and a pull rope 312 that is connected to the arc plate 311;

[0074] By pulling the pull rope 312, the arc plate 311 drives the connecting shaft 31 to rotate, thereby driving the rotor 313 to push the two clamping blocks 11 to rotate away from each other, so as to break the water-soluble paper sheet 112, so that the two clamping blocks 11 release the rotating shaft.

[0075] The specific operation mode of the actual implementation of the method provided by the present invention is as follows:

[0076] The automatic inflation device is installed on the life jacket, and the air outlet 18 is connected to the air bag of the life jacket. At this time, the coil spring 141 is compressed and has a certain resilience. A water-soluble paper sheet 112 is connected between the two clamping blocks 11, so that one end of the two clamping blocks 11 is connected by a knot, and a pulling force is provided to the two clamping blocks 11 in a direction of approaching each other, so that the limiting boss 111 of the clamping block 11 can tightly clamp the limiting boss 131 of the first shaft body 13, so that the first shaft body 13 is clamped between the two clamping blocks 11 to prevent the rotation of the rotating shaft;

[0077] When the user falls into the water wearing the life jacket, if the speed of water entering the first base 21 is fast, the water-soluble paper sheet 112 will dissolve in water, and the two clamping blocks 11 will lose the pulling force to approach each other, so that the locking boss 111 of the clamping block 11 releases the limiting boss 131 of the first shaft body 13, and the rebound force of the coil spring 141 drives the second shaft body 14 to rotate, so that the rotating shaft rotates as a whole, and the third rotating shaft 15 drives the cam 152 to rotate when rotating, so that the cam 152 pushes the cutting knife 16 to move along the sliding channel 17 toward the direction close to the gas cylinder 12, thereby cutting the sealing film of the bottle mouth of the gas cylinder 12, so that the gas in the gas cylinder 12 enters the air bag of the life jacket through the gas outlet 18;

[0078] When the user falls into the water wearing the life jacket, if the speed at which water enters the first base 21 is slow, the user can pull the pull rope 312 by himself, so that the connecting shaft 31 drives the rotor 313 to rotate, so that the rotor 313 pushes the end of the clamping block 11 connected to the water-soluble paper sheet 112, so that the two clamping blocks 11 move away from each other near the ends of the water-soluble paper sheet 112, so that the water-soluble paper sheet 112 breaks, so that the two clamping blocks 11 cannot clamp the first shaft body 13, and the second shaft body 14 rotates under the drive of the coil spring 141, so that the shaft rotates as a whole, and the third shaft 15 rotates, driving the cam 152 to rotate, so that the cam 152 pushes the cutting knife 16 to move along the sliding channel 17 towards the direction close to the gas cylinder 12, thereby cutting the sealing film at the mouth of the gas cylinder 12, so that the gas in the gas cylinder 12 enters the air bag of the life jacket through the gas outlet 18.

[0079] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. An automatic inflation device for a life jacket, characterized in that: include: A shell for installation on a life jacket, wherein a side wall of the shell is provided with an air outlet corresponding to the air bag of the life jacket; a rotating shaft rotatably mounted in the housing, wherein a coil spring is connected between the rotating shaft and the inner wall of the housing; Two clamping blocks rotatably connected to the housing and used to clamp the rotating shaft, with a water-soluble paper sheet connected between the two clamping blocks; A gas cylinder is installed on the shell corresponding to the gas outlet, and the mouth of the gas cylinder extends into the shell; as well as A cutting knife connected to the rotating shaft and arranged corresponding to the bottle mouth of the gas cylinder is driven, and the water-soluble paper sheet dissolves in water, so that the two clamping blocks release the rotating shaft, and then the coil spring drives the rotating shaft to rotate, so as to drive the cutting knife to cut the sealing film of the bottle mouth of the gas cylinder, so that the gas in the gas cylinder is filled into the air bag of the life jacket from the gas outlet; It also includes a cam corresponding to the gas cylinder and fixedly sleeved on the rotating shaft, and a sliding channel corresponding to the cam and formed in the housing, wherein the cutting knife is arranged on the top of the cam and slidably arranged in the sliding channel; The cam is driven to rotate by the rotating shaft, so that the cam pushes the cutting knife to move along the sliding channel toward the gas cylinder, so that the cutting knife cuts the sealing film; The rotating shaft comprises a first shaft body rotatably connected to the housing and clamped between the two clamping blocks, a second shaft body drivingly connected to the first shaft body and connected to the coil spring, and a third shaft body drivingly connected to the second shaft body and drivingly connected to the cutting knife; The clamping block matches the first shaft body in an arc shape, and a locking boss protruding outward is formed at a position of the clamping block close to the first shaft body, and a limiting boss protruding outward is formed at a position of the first shaft body corresponding to the locking boss. The first shaft body is clamped by the two clamping blocks so that the locking boss clamps the limiting boss, thereby preventing the rotating shaft from rotating.

2. The automatic inflation device for a life jacket as claimed in claim 1, characterized in that: It also includes a connecting shaft that is rotatably connected to the shell and partially extends out of the shell corresponding to the water-soluble paper sheet, and a rotor that is fixed to the connecting shaft and located between the two clamping blocks, wherein the width of the rotor is smaller than the spacing between the two clamping blocks, and the length of the rotor is larger than the spacing between the two clamping blocks; The connecting shaft is rotated to drive the rotor to rotate, so that the rotor pushes the two clamping blocks to rotate in directions away from each other, thereby breaking the water-soluble paper sheet and causing the two clamping blocks to release the rotating shaft.

3. The automatic inflation device for a life jacket as claimed in claim 2, characterized in that: It also includes an arc-shaped plate fixedly connected to the portion of the connecting shaft extending out of the housing, and a pull rope with one end fixedly connected to the arc-shaped plate; By pulling the pull rope, the arc plate drives the connecting shaft to rotate.

4. The automatic inflation device for a life jacket as claimed in claim 1, characterized in that: The portion of the first shaft body close to the end of the second shaft body protrudes outward to form a protruding portion, and the portion of the end of the second shaft body close to the first shaft body corresponding to the protruding portion is recessed inward to form a recessed portion; The protruding portion is clamped in the recessed portion so that the end of the first shaft body is meshed with the end of the second shaft body, so that the first shaft body and the second shaft body rotate synchronously.

5. The automatic inflation device for a life jacket as claimed in claim 1, characterized in that: The cross section of the end of the second shaft body close to the third shaft body is non-circular, and the end of the third shaft body close to the second shaft body is provided with a through hole matching the end of the second shaft body; The end of the second shaft body is inserted into the through hole so that the end of the second shaft body is meshed with the end of the third shaft body, so that the second shaft body and the third shaft body rotate synchronously.

6. The automatic inflation device for a life jacket as claimed in claim 1, characterized in that: It also includes a partition plate fixed in the shell and located between the air outlet and the water-soluble paper sheet. The partition plate is sleeved on the third shaft body, and the partition plate is connected to the third shaft body through a bearing, so that the third shaft body can rotate relative to the partition plate.

7. A method for using the automatic inflation device for a life jacket as claimed in claim 1, characterized in that: The steps include: Provide the automatic inflation device, install the shell on the life jacket, and connect the air outlet to the air bag of the life jacket; When the life jacket comes into contact with water, the water-soluble paper sheet dissolves in water, causing the two clamping blocks to loosen the rotating shaft, and then the coil spring drives the rotating shaft to rotate, thereby driving the cutting knife to cut the sealing film of the bottle mouth of the gas cylinder, so that the gas in the gas cylinder is filled into the air bag of the life jacket from the gas outlet.

8. The method for using the automatic inflation device for a life jacket according to claim 7, characterized in that: It also includes a connecting shaft that is rotatably connected to the shell and partially extends out of the shell corresponding to the water-soluble paper sheet, a rotor that is fixed to the connecting shaft and located between the two clamping blocks, an arc-shaped plate that is fixed to the extended portion of the connecting shaft, and a pull rope connected to the arc-shaped plate; By pulling the pull rope, the arc plate drives the connecting shaft to rotate, thereby driving the rotor to push the two clamping blocks to rotate away from each other, so as to break the water-soluble paper sheet and make the two clamping blocks release the rotating shaft.

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