Automatic inflation device for free diving life jacket air cell

Abstract

The utility model discloses a free diving life jacket air bag automatic inflation device relates to free diving safety protection equipment technical field, including PLC controller, feedback button, deflation subassembly and transmission assembly, deflation subassembly contains steel bottle storehouse, the puncture storehouse of built -in puncture subassembly, and transmission assembly is controlled by PLC and drives puncture subassembly action. The device is integrated in life jacket, and the feedback button is pressed to the diver by the bell sound dial of PLC, when not timely feedback, transmission assembly unlocks puncture subassembly, and it utilizes lever principle to drive puncture needle to puncture the gas cylinder, and gas fills into air bag through gas pipe. The device solves the problem that the existing diving companion system protection blind area and traditional equipment cannot deal with the sudden coma of the diver, can cover the whole course safety protection of diving, prevents false triggering and adapts to underwater environment, improves the safety and practicality of free diving.

Description

Technical Field

[0001] This utility model relates to the field of freediving safety protection equipment technology, and in particular to an automatic inflation device for the airbag of a freediving life jacket. Background Technology

[0002] Freediving, a diving sport that relies on divers holding their breath underwater without carrying a breathing air source, has its core risks stemming from unique physiological and environmental factors during the dive: divers need to improve their carbon dioxide tolerance through breath-holding training to extend their underwater time, but the increased water pressure during descent leads to an increase in the partial pressure of oxygen in the blood, which can cause the brain to misjudge that there is enough oxygen and ignore the breathing needs caused by the accumulation of carbon dioxide. In addition, most divers will enter a state of negative buoyancy and continue to sink after descending to a certain depth due to the reduction of air volume in their lungs. When the oxygen content in their body is too low, they are very likely to suddenly experience LMC (loss of consciousness) or BO (collapse), which will endanger their lives if they cannot return to the surface in time to resume breathing. To mitigate these risks, the industry primarily employs buddy systems and quick-release weights. In a buddy system, one diver descends while another acts as a safety officer, assisting the diver as they turn back and accompanying them for the latter half of the ascent. Weights can be quickly removed to increase buoyancy. However, both measures have significant limitations. A buddy can only protect the diver for the latter half of the ascent; the entire descent and the first half of the ascent are unprotected. Furthermore, the safety officer must contend with the weight and resistance of two individuals during a rescue, resulting in significant physical exertion and a lack of personal safety. There have even been incidents of the safety officer losing consciousness and drowning after a rescue. This is particularly problematic in freediving instruction scenarios, where students often lack the skills to undertake rescue duties, leaving instructors frequently without effective buddy protection. At the same time, existing anti-drowning devices on the market are also difficult to adapt to the needs of freediving: the automatic inflatable jacket worn on the body will dissolve and automatically inflate when it comes into contact with water, which does not meet the requirements of actively controlling buoyancy when diving; the small manual airbag on the wrist relies on the person falling into the water to manually activate it, but freedivers often suddenly lose consciousness due to lack of oxygen without warning, and cannot activate it on their own.

[0003] In summary, the current field of freediving lacks a safety protection device that can adapt to its movement characteristics, cover the entire safety blind spot during the dive, does not require excessive reliance on human protection, and can cope with sudden unconsciousness scenarios. This technological gap makes freediving always face high safety risks and has become a key issue restricting its safe development. Utility Model Content

[0004] The purpose of this invention is to provide an automatic inflation device for the airbag of a freediving life jacket, which solves the above-mentioned problems.

[0005] This utility model is achieved through the following technical solution: An automatic inflation device for a freediving life jacket airbag includes a PLC controller and a feedback button electrically connected to the PLC controller. It also includes a deflation component electrically connected to the PLC controller and a transmission component installed on the outer surface of the cylinder compartment. The deflation component includes a cylinder compartment and a puncture compartment. The cylinder compartment is used to store the gas cylinder. The puncture compartment is equipped with a puncture component for puncturing the gas cylinder and entering the cylinder compartment. The transmission component is controlled by the PLC controller and is fixedly connected to the part of the puncture component inside the cylinder compartment, which drives the puncture component to move up and down.

[0006] Furthermore, The top two sides of the cylinder compartment have puncture holes facing each other near the edge. A bolt channel is opened between the two puncture holes. The lower half of the bolt channel is provided with a support platform on the side wall. Opposite hinge blocks are provided between the bolt channel and the two puncture holes in a direction perpendicular to the line connecting the two holes. The two puncture holes connect to the corresponding cylinder chambers in the cylinder compartment. The bottom of the cylinder compartment is a removable cylinder cap. Two cylinder limiting grooves corresponding to the puncture holes are opened on the upper surface of the cylinder cap.

[0007] Furthermore, The puncture assembly includes a lever rod, a push slider, a throttle rod, a spring, and a puncture needle. The lever rod is positioned between and hinged to the opposing hinge blocks, and a puncture needle aligned with the puncture hole is vertically positioned at the bottom end away from the hinge block. A groove is formed on the opposing surfaces of the two lever rods. A push slider with pulleys on both sides is positioned between the two lever rods. A throttle rod is vertically positioned at the lower end of the push slider, passing through the throttle channel and through the support platform. The throttle rod passes through the spring, and one end of the spring is positioned on the lower surface of the push slider, while the other end is fixedly connected to the upper surface of the support platform.

[0008] Furthermore, The transmission assembly includes a servo motor, a trigger rod, a locking block, a rubber band block, and a connecting rod. The servo motor is installed on the surface of the cylinder compartment near the side, with its output end horizontally facing the other side. A horizontal trigger rod is provided at the output end of the servo motor, and there is an off-axis point on the trigger rod. A mounting hole is opened on the surface of the cylinder compartment at this off-axis point. A locking block that contacts the pull rod is provided in the mounting hole, and a vertically downward connecting rod is provided below the locking block away from the interior of the cylinder compartment. The other end of the connecting rod is fixedly connected to the connecting rod rubber band block. The locking block and the rubber band block are set together in the mounting hole, and the locking block extends beyond the mounting hole. A through groove is opened on the upper surface of the part of the locking block that extends beyond the mounting hole for the trigger rod to pass through. The servo motor fixing block is inside the servo motor waterproof cover and is provided on the surface of the cylinder compartment where the transmission assembly is located.

[0009] Furthermore, A ringing rod is installed above the locking block, penetrating the cylinder compartment. A bell dial that rotates with the trigger rod is fixed on the trigger rod. A slot is made in the cylinder compartment corresponding to the bell dial, through which the ringing rod passes. A bell hammer is installed in the slot above the bell dial, contacting the bell dial. A bell spring is connected to the upper surface of the bell hammer, and the other end of the bell spring is connected to the top of the slot.

[0010] Furthermore, The bottom of the bell dial is vertically connected to the trigger lever. The upper part of the bell dial is high in the middle and low on both sides, which matches the lower part of the bell hammer. The bell dial and the bell hammer overlap in the vertical direction.

[0011] Furthermore, The lever is L-shaped, with its vertical part offset towards the bolt channel and its horizontal part hinged to the end hinge block. A puncture needle is set on the lower surface of the L-shaped bend.

[0012] Furthermore, A bolt limit groove matching the wedge-shaped locking block is provided on the bolt rod.

[0013] Furthermore, The PLC controller, deflation assembly, and feedback button are all fixedly mounted on the diving life jacket. The deflation assembly has an air hole in the middle of the upper surface of the puncture chamber, and this air hole is connected to the air bladder in the diving life jacket through an air tube inside the diving life jacket.

[0014] The beneficial effects of this utility model are: 1. Existing freediving buddy systems have significant limitations. Safety officers can only protect divers for half the descent, leaving them unprotected for the entire descent and the first half before surfacing. During this latter phase, divers often experience sudden unconsciousness due to oxygen deprivation, leading to accidents. This invention utilizes a PLC-controlled early warning and automatic activation mechanism. Throughout the dive, a system consisting of a bell dial, a bell hammer, and a tinkling stick continuously alerts the diver to their status. If the diver is unable to press the feedback button due to confusion or unconsciousness, the device automatically triggers air cylinder puncture and airbag inflation, eliminating the need for a safety officer. This effectively covers the safety blind spots of the buddy system and significantly reduces the risk of drowning during the unprotected phase.

[0015] 2. This invention ensures stable performance under complex underwater environments such as high pressure and water flow impact. In terms of the triggering mechanism, the L-shaped lever rod, in conjunction with the thrust slider and the pull spring, utilizes the lever principle to amplify the puncture force, ensuring the puncture needle accurately punctures the gas cylinder. The pull rod's limit groove, in conjunction with the wedge-shaped locking block, effectively prevents accidental triggering due to water flow disturbances, improving safety. Regarding inflation assurance, the overpressure relief valve on the airbag automatically adjusts the air pressure according to changes in diving depth, preventing the airbag from bursting due to decreased pressure and ensuring continuous and stable buoyancy. The puncture chamber's air hole is connected to the airbag via an internal air tube in the life jacket, preventing the air tube from being exposed and damaged by scratches or entanglement, further ensuring smooth gas delivery. Simultaneously, the PLC controller's precise control of the servo motor's rotation angle achieves an orderly connection of the "prompt-unlock-puncture-inflation" process, allowing the device to respond efficiently even in complex underwater environments.

[0016] 3. In existing buddy systems, safety officers rescuing unconscious divers must contend with the combined weight and resistance of two people, resulting in immense physical exertion and a lack of personal safety. Accidents have occurred where safety officers themselves have drowned after a rescue attempt. This device, with its automatic inflation function, allows divers to be brought to the surface before they lose consciousness, significantly reducing the need for safety officers to actively descend and rescue them. Even if a rescue is still required, the inflated airbag provides buoyancy, significantly reducing the diver's weight and eliminating the need for the safety officer to contend with additional weight, greatly reducing the difficulty and physical exertion of the rescue. Furthermore, addressing the issue of "no effective buddy protection" during freediving instruction, the device can independently provide safety for instructors, eliminating reliance on less skilled students, further optimizing the safety effectiveness of the buddy system and reducing the risk for all participants in diving activities.

[0017] 4. This utility model is designed with the practical operational needs of freediving in mind, possessing high practicality and convenience. The device is integrated into a diving life jacket, which can be fixed to the wetsuit or worn directly, without adding extra equipment burden to the diver. The bottom of the cylinder compartment features a detachable cylinder cap, along with a cylinder limiting groove, facilitating quick installation, inspection, and replacement of cylinders before diving, improving preparation efficiency. Whether for everyday freediving by ordinary divers or instructional scenarios by instructors, the device provides stable protection through automatic warning and inflation functions. A manual start switch can handle special situations such as equipment warning failure, achieving broad adaptability to different diving scenarios and enhancing the universality of freediving safety equipment. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural diagram of the transmission assembly and the puncture chamber; Figure 3 This is a schematic diagram of the interior after removing the outer shell of the gas cylinder compartment and the outer shell of the puncture compartment. Figure 4 This is a schematic diagram of the device's cross-section; Figure 5 Schematic diagram of a tie rod; Figure 6 This is a schematic diagram of the trigger lever.

[0019] The attached diagram shows the markings and corresponding component names: 1-Vent assembly, 10-Cylinder compartment, 101-Piercing hole, 102-Pull bolt channel, 103-Hinge block, 105-Cylinder cap, 106-Cylinder cavity, 1050-Cylinder limiting groove, 11-Piercing chamber, 111-Piercing assembly, 1110-Thrust slider, 1111-Lever rod, 1112-Pull bolt rod, 11120-Pull bolt rod limiting groove, 1113-Spring, 1114-Piercing needle, 2-PLC controller, 3-Feedback button, 5-Transmission assembly, 50-Servo motor, 51-Trigger rod, 52-Locking block, 53-Connecting rod, 54-Rubber band block, 55-Servo motor fixing block, 56-Servo motor waterproof cover, 56-Connecting rod, 6-Ding-ding rod, 7-Bell dial, 8-Bell hammer, 9-Bell spring, 12-Ventilation hole, 13-Cylinder. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] See the example. Figures 1 to 6 : An automatic inflation device for a freediving life jacket airbag includes a PLC controller 2 and a feedback button electrically connected to the PLC controller 2. It also includes a deflation component 1 electrically connected to the PLC controller 2 and a transmission component 5 installed on the outer surface of a cylinder compartment 10. The deflation component 1 includes a cylinder compartment 10 and a puncture compartment 11. The cylinder compartment 10 is used to store a gas cylinder 13. The puncture compartment 11 is provided with a puncture component 111 for puncturing the gas cylinder 13 and entering the cylinder compartment 10. The transmission component 5 is controlled by the PLC controller 2 and is fixedly connected to the part of the puncture component 111 inside the cylinder compartment 10, which drives the puncture component 111 to move up and down.

[0024] Furthermore, The top two sides of the cylinder compartment 10 have puncture holes 101 facing each other near the edge. A bolt channel 102 is formed between the two puncture holes 101. The lower half of the bolt channel 102 is provided with a support platform on the side wall. A hinge block 103 is provided between the bolt channel 102 and the two puncture holes 101 in a direction perpendicular to the line connecting the two holes. The two puncture holes 101 are connected to the cylinder chamber 106 inside the cylinder compartment 10. The bottom of the cylinder compartment 10 is a detachable cylinder cover 105. Two cylinder limiting grooves 1050 corresponding to the puncture holes 101 are formed on the upper surface of the cylinder cover 105.

[0025] The position of the puncture hole 101 allows the puncture needle 1114 to be precisely aligned with the gas cylinder 13 opening, ensuring the accuracy of subsequent puncture actions. The pull-bolt channel 102 and the support platform provide guidance and support for the installation and movement of the pull-bolt rod 1112, ensuring the stable operation of the pull-bolt rod 1112 during locking and releasing. The hinge block 103 provides a hinge fulcrum for the lever rod 1111, allowing the lever rod 1111 to rotate flexibly to drive the puncture needle 1114. The detachable gas cylinder cap 105 and the gas cylinder limiting groove 1050 facilitate the installation, replacement, and fixation of the gas cylinder 13, preventing the gas cylinder 13 from being affected by shaking during diving, and also facilitating the inspection and replacement of the gas cylinder 13 before diving, thus improving the practicality and reliability of the device.

[0026] Furthermore, The puncture assembly 111 includes a lever rod 1111, a push slider 1110, a tether rod 1112, a spring 1113, and a puncture needle 1114. The lever rod 1111 is arranged between and hinged to the opposing hinge blocks 103, and the puncture needle 1114 is vertically arranged at the bottom end away from the hinge block 103, aligned with the puncture hole 101. A sliding groove is opened on the opposite surface of the two lever rods 1111. A push slider 1110 with pulleys on both sides is arranged between the two lever rods 1111. A tether rod 1112 is vertically arranged at the lower end of the push slider 1110, passing through the tether channel 102 and through the support platform. The tether rod 1112 passes through the spring 1113, and one end of the spring 1113 is arranged on the lower surface of the push slider, and the other end is fixedly connected to the upper surface of the support platform.

[0027] The hinged engagement between lever 1111 and hinge block 103 allows it to rotate flexibly around the hinge point, providing a basis for the rotation of puncture needle 1114. The pulleys on both sides of the push slider 1110 engage with the grooves of lever 1111, reducing friction during slider movement and ensuring smooth movement of lever 1111. The combination of pull rod 1112 and spring 1113 is the power source for the puncture action. The elastic potential energy stored in spring 1113 when compressed is quickly converted into kinetic energy for upward movement of pull rod 1112 after release. This energy is then used to push lever 1111 through push slider 1110, giving puncture needle 1114 sufficient downward impact force to accurately and powerfully puncture gas cylinder 13, ensuring smooth gas release and providing a stable gas source for airbag inflation.

[0028] Furthermore, The transmission assembly 5 includes a servo motor 50, a trigger rod 51, a locking block 52, a rubber band block 54, and a connecting rod 53. The servo motor 50 is installed on the surface of the cylinder compartment 10 near the side. The output end of the servo motor 50 is horizontally oriented towards the other side. The output end of the servo motor 50 is provided with a horizontal trigger rod 51, and there is an off-axis point on the trigger rod 51. An installation hole is opened on the surface of the cylinder compartment 10 at the off-axis point. A locking block 52 is provided in the installation hole to contact the pull rod 1112. A vertically downward connecting rod 53 is provided below the locking block 52 away from the interior of the cylinder compartment 10. The other end of the connecting rod 53 is fixedly connected to the rubber band block 54 of the connecting rod 53. The locking block 52 and the rubber band block 54 are set together in the installation hole, and the locking block 52 extends beyond the installation hole. A through groove is opened on the upper surface of the part of the locking block 52 that extends beyond the installation hole for the trigger rod 51 to pass through. The servo motor fixing block 55 is inside the servo motor waterproof cover 56 and is provided on the surface of the cylinder compartment 10 where the transmission assembly 5 is installed.

[0029] The servo motor 50 ensures that the trigger rod 51 can rotate within a suitable range, and its waterproof cover effectively protects the servo motor 50 from the underwater environment, ensuring the stable operation of the equipment during diving. The cooperation between the off-axis on the trigger rod 51 and the through groove of the locking block 52 enables precise control of the state of the locking block 52. The squeezing action at the off-axis can drive the locking block 52 to move flexibly through the elastic deformation of the rubber band block 54. The elasticity of the rubber band block 54 not only provides cushioning for the movement of the locking block 52, avoiding rigid collision damage between mechanical parts, but also drives the locking block 52 back to the initial locked position when the trigger rod 51 resets, preparing for the next device start-up. The overall structure allows the PLC controller 2 to precisely control the locking and releasing of the locking block 52 against the pull rod 1112 by controlling the rotation angle of the servo motor 50, ensuring that the device can trigger the puncture action in time when needed, improving the control accuracy and reliability of the device.

[0030] Furthermore, A ringing rod 6 is installed above the locking block 52 and passes through the cylinder compartment 10. A bell dial 7 that can rotate with the trigger rod 51 is fixed on the trigger rod 51. A slot is opened in the cylinder compartment 10 corresponding to the bell dial 7, through which the ringing rod 6 passes. A bell hammer 8 is installed in the slot above the bell dial 7 and contacts the bell dial 7. A bell spring 9 is connected to the upper surface of the bell hammer 8, and the other end of the bell spring 9 is connected to the top of the slot.

[0031] When the servo motor 50 drives the trigger lever 51 to rotate reciprocally, the bell dial 7 rotates accordingly. Its contact with the bell hammer 8 allows the bell hammer 8 to move up and down through the extension and retraction of the bell spring 9, thereby striking the ding-ding stick 6 to emit a warning sound. This warning sound can be effectively transmitted to the diver in the underwater environment, reminding them to press the feedback button 3 in time. The design of the ding-ding stick 6 penetrating through the cylinder compartment 10 allows the bell sound to be transmitted to the diver's ears more clearly, reducing the attenuation of sound by the underwater environment. The setting of the bell spring 9 not only allows the bell hammer 8 to quickly return to its original position after being struck, ensuring the continuity and regularity of the warning sound, but also allows the force and frequency of the bell hammer 8 to be controlled by adjusting the elasticity of the spring 1113, ensuring that the warning sound is both conspicuous and not too harsh, avoiding interference with other operations of the diver, thus improving the humanized design and warning effectiveness of the device.

[0032] Furthermore, The bottom of the bell dial 7 is vertically connected to the trigger lever 51. The upper part of the bell dial 7 is high in the middle and low on both sides, which matches the lower part of the bell hammer 8. The bell dial 7 and the bell hammer 8 overlap in the vertical direction.

[0033] The shape of the upper end, which is high in the middle and low on both sides, matches the lower end of the bell hammer 8, ensuring that the bell dial 7 can maintain stable contact and force transmission with the bell hammer 8 during rotation, avoiding intermittent alarm sounds due to poor contact. The vertical connection with the trigger rod 51 allows the rotation of the trigger rod 51 to be efficiently and accurately transmitted to the bell dial 7, ensuring that the rotation angle of the bell dial 7 is consistent with that of the trigger rod 51, thereby precisely controlling the striking rhythm of the bell hammer 8. The overlapping part in the vertical direction provides sufficient space for the contact between the bell hammer 8 and the bell dial 7. Even when the underwater device experiences slight positional shifts due to shaking, the two can still maintain stable contact, ensuring continuous alarm sound production and improving the early warning reliability of the device in complex underwater environments.

[0034] Furthermore, The lever 1111 is L-shaped, with its vertical part offset towards the bolt channel 102 and its horizontal part hinged to the end hinge block 103. A puncture needle 1114 is provided on the lower surface of the L-shaped bend.

[0035] The L-shaped lever 1111's structural design fully utilizes the lever principle, significantly improving the efficiency and force of the puncture action. The vertical portion is offset towards the pull-bolt channel 102, allowing the push slider 1110 to apply a more direct thrust to the vertical portion of the lever 1111 as it moves along the groove, reducing force loss and allowing the thrust to be more efficiently converted into the rotational power of the lever 1111. The hinge between the horizontal portion and the hinge block 103 provides a stable fulcrum for the lever 1111, ensuring that the lever 1111 can rotate precisely around the fulcrum when under force. The puncture needle 1114 is installed on the lower surface of the L-shaped bend, at the end of the lever arm. According to the lever principle, this position maximizes the downward force of the puncture needle 1114, allowing it to easily puncture even the sealed structure of the gas cylinder 13, ensuring smooth gas release.

[0036] Furthermore, A bolt limit groove 11120 matching the wedge-shaped locking block 52 is provided on the bolt rod 1112.

[0037] The engagement of the rod limiting groove 11120 on the lancet 1112 and the wedge-shaped locking block 52 forms a stable and reliable mechanical locking mechanism, effectively preventing accidental triggering of the device. The matching design of the rod limiting groove 11120 and the locking block 52 ensures that the lancet 1112 is firmly fixed to the compressed spring 1113 when the device is not activated. This prevents the lancet 1112 from moving unexpectedly due to external factors such as bumps and water flow during diving, thus preventing premature release of the spring 1113 and accidental puncture, ensuring safety during diving. Simultaneously, the wedge-shaped locking block 52, when disengaging from the rod limiting groove 11120, uses its inclined surface to guide the disengagement process more smoothly, reducing jamming. This ensures that the lancet 1112 can be quickly released when the device needs to be triggered, without affecting the timely execution of subsequent puncture actions, balancing the safety and response efficiency of the device.

[0038] Furthermore, The PLC controller 2, the deflation assembly 1, and the feedback button 3 are all fixedly mounted on the diving life jacket. The puncture chamber 11 in the deflation assembly 1 has an air hole 12 in the middle of its upper surface, and the air hole 12 is connected to the airbag in the diving life jacket through the air tube inside the diving life jacket.

[0039] The puncture chamber 11 and the air vent 12 are connected to the air bladder via an air tube, forming an efficient gas delivery channel. This ensures that the gas released after the gas cylinder 13 is punctured can be quickly and leak-free delivered to the air bladder through the air tube, allowing the air bladder to inflate rapidly and provide sufficient buoyancy for the diver. The air tube is built into the life jacket, which not only protects the air tube from scratches and damage from underwater rocks, corals, and other objects, but also prevents the air tube from becoming entangled and affecting the diver's activities. This further ensures the reliable operation of the device in emergency situations and improves the safety level of the diver.

[0040] The usage and principle of this utility model are as follows: This utility model revolves around the logical process of "early warning feedback - trigger unlocking - inflation and buoyancy". The core is controlled by PLC controller 2: After the diver puts on the life jacket with the integrated device, PLC controller 2 will first control the servo motor 50 to rotate back and forth. The bell dial 7 connected to the servo motor 50 will rotate synchronously. Because the upper part of the bell dial 7 has an adaptation structure of "high in the middle and low on both sides", it will continuously push the bell hammer 8 in contact with it during the rotation. With the extension and contraction of the bell spring 9, the bell hammer 8 will continuously strike the ringing rod 6 that runs through the steel cylinder compartment 10. Through the underwater-transmittable prompt sound, the diver is reminded to press the feedback button 3 to confirm his status. If the diver fails to press the feedback button 3 within the specified time due to an emergency such as lack of oxygen, and the PLC controller 2 does not receive a feedback signal, it will immediately control the servo motor 50 to increase the rotation angle, causing the trigger rod 51 to synchronously increase the rotation amplitude. At this time, the off-axis of the trigger rod 51 will squeeze the locking block 52 on the side of the through groove that extends beyond the mounting hole and is away from the bolt rod 1112. Since the locking block 52 is fixedly connected to the rubber band block 54 through the connecting rod 53, and the rubber band block 54 has elastic deformation characteristics, the squeezing force will cause the locking block 52 to lift backward and upward. When the lifting distance reaches a certain level, the locking block 52 will disengage from the bolt rod limiting groove 11120 on the bolt rod 1112, releasing the lock on the bolt rod 1112. The bolt spring 1113, which was previously in a compressed state, will instantly release its elastic potential energy, pushing the bolt rod 1112 upward along the bolt channel 102. The thrust slider 1110 at the top of the bolt rod 1112 will then move along the L-shaped lever 11. The movement of the sliding groove on the opposite side of 11 creates a lateral thrust on the vertical part of the lever rod 1111. Since the horizontal part of the lever rod 1111 is hinged to the hinge block 103 inside the cylinder compartment 10, the lever rod 1111 rotates around the hinge point under the thrust. The puncture needle 1114 on the lower surface of its bend moves downward accordingly, accurately piercing the mouth of the gas cylinder 13 inside the cylinder compartment 10. The high-pressure gas inside the gas cylinder 13 flows out through the air hole 12 in the middle of the upper surface of the puncture chamber 11 and is delivered to the air bag folded at the chest through the air tube built into the life jacket. This causes the air bag to inflate rapidly, generating sufficient positive buoyancy to bring the diver to the surface, ensuring that the diver's breathing tract is always above the surface, thus achieving a safe rescue. The PLC controller 2 also has a depth sensor. When the depth sensor detects that the diving depth is greater than the threshold in the PLC controller 2, it also controls the servo motor 50 to increase the rotation angle to pierce the mouth of the gas cylinder 13. The PLC controller 2 is driven by the battery inside.

[0041] However, when a diver encounters an emergency and needs to actively trigger the inflation of the airbag, or when the PLC controller 2 fails, the diver can manually rotate the trigger lever 51 (which is shaped like a handle) to release the lock of the pull rod 1112, allowing the mouth of the gas cylinder 13 to be punctured to inflate the airbag and complete the active trigger inflation of the airbag.

[0042] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automatic inflation device for the airbag of a freediving life jacket, comprising a PLC controller (2) and a feedback button electrically connected to the PLC controller (2), characterized in that, It also includes a venting assembly (1) electrically connected to the PLC controller (2) and a transmission assembly (5) installed on the outer surface of the cylinder compartment (10). The venting assembly (1) includes the cylinder compartment (10) and the puncture chamber (11). The cylinder compartment (10) is used to store gas cylinders (13). The puncture chamber (11) is provided with a puncture assembly (111) for puncturing the gas cylinder (13) and entering the cylinder compartment (10). The transmission assembly (5) is controlled by the PLC controller (2) and is fixedly connected to the part of the puncture assembly (111) inside the cylinder compartment (10), which drives the puncture assembly (111) to move up and down.

2. The automatic inflation device for the airbag of a freediving life jacket according to claim 1, characterized in that, The top two sides of the cylinder compartment (10) are provided with puncture holes (101) near the edge. A pull bolt channel (102) is provided between the two puncture holes (101). The lower half of the pull bolt channel (102) is provided with a support platform on the side wall. A hinge block (103) is provided between the pull bolt channel (102) and the two puncture holes (101) in a direction perpendicular to the line connecting the two holes. The two puncture holes (101) are connected to the cylinder chamber (106) in the corresponding cylinder compartment (10). The bottom of the cylinder compartment (10) is a detachable cylinder cap (105). Two cylinder limiting grooves (1050) are provided on the upper surface of the cylinder cap (105) that correspond one-to-one with the puncture holes (101).

3. The automatic inflation device for the airbag of a freediving life jacket according to claim 2, characterized in that, The puncture assembly (111) includes a lever rod (1111), a push slider (1110), a pull rod (1112), a pull spring (1113), and a puncture needle (1114). The lever rod (1111) is disposed between and hinged to the opposing hinge blocks (103), and the puncture needle (1114) aligned with the puncture hole (101) is vertically disposed at the bottom end away from the hinge block (103). A groove is provided on the opposite side of the lever (1111). A push slider (1110) with pulleys on both sides is provided between the two levers (1111). A vertical pull rod (1112) is provided at the lower end of the push slider (1110) and passes through the pull rod channel (102) and through the support platform. The pull rod (1112) passes through the pull rod spring (1113) and one end of the pull rod spring (1113) is provided on the lower surface of the push slider, and the other end is fixedly connected to the upper surface of the support platform.

4. The automatic inflation device for the airbag of a freediving life jacket according to claim 3, characterized in that, The transmission assembly (5) includes a servo motor (50), a trigger rod (51), a locking block (52), a rubber band block (54), and a connecting rod (53). The servo motor (50) is installed on the surface of the cylinder compartment (10) near the side. The output end of the servo motor (50) is horizontally oriented towards the other side. A horizontal trigger rod (51) is provided at the output end of the servo motor (50), and the trigger rod (51) extends out of the servo motor waterproof cover (56). The end of the trigger rod (51) is shaped like a handle. There is an off-axis point on the trigger rod (51). A mounting hole is opened on the surface of the cylinder compartment (10) at the off-axis point. A connecting rod (1) is provided in the mounting hole. 112) The locking block (52) is in contact with the cylinder compartment (10) and a vertically downward connecting rod (53) is provided below the locking block (52) away from the interior of the cylinder compartment (10). The other end of the connecting rod (53) is fixedly connected to the connecting rod (53) rubber band block (54). The locking block (52) and the rubber band block (54) are together set in the mounting hole and the locking block (52) extends beyond the mounting hole. A through groove is opened on the upper surface of the part of the locking block (52) that extends beyond the mounting hole for the trigger rod (51) to pass through. The servo motor fixing block (55) is inside the servo motor waterproof cover (56) and is set on the surface of the cylinder compartment (10) where the transmission component (5) is set.

5. The automatic inflation device for the airbag of a freediving life jacket according to claim 4, characterized in that, A ringing rod (6) is installed above the locking block (52) through the cylinder compartment (10). A bell dial (7) that can rotate with the trigger rod (51) is fixed on the trigger rod (51). A slot is opened in the cylinder compartment (10) corresponding to the bell dial (7) through which the ringing rod (6) passes. A bell hammer (8) that contacts the bell dial (7) is set above the bell dial (7) in the slot. A bell spring (9) is connected to the upper surface of the bell hammer (8). The other end of the bell spring (9) is connected to the top of the slot.

6. The automatic inflation device for the airbag of a free-diving life jacket according to claim 5, characterized in that, The bottom of the bell dial (7) is vertically connected to the trigger rod (51). The upper end of the bell dial (7) is high in the middle and low on both sides, which is compatible with the lower end of the bell hammer (8). The bell dial (7) and the bell hammer (8) overlap in the vertical direction.

7. The automatic inflation device for the airbag of a freediving life jacket according to claim 3, characterized in that, The lever rod (1111) is L-shaped, with its vertical part offset towards the bolt channel (102) and its horizontal part hinged to the end hinge block (103). A puncture needle (1114) is provided on the lower surface of the L-shaped bend.

8. The automatic inflation device for the airbag of a freediving life jacket according to claim 3, characterized in that, A bolt limit groove (11120) matching the wedge locking block (52) is provided on the bolt rod (1112).

9. The automatic inflation device for the airbag of a freediving life jacket according to claim 1, characterized in that, The PLC controller (2), the deflation assembly (1), and the feedback button (3) are all fixedly installed on the diving life jacket. An air hole (12) is provided in the middle of the upper surface of the puncture chamber (11) in the deflation assembly (1), and the air hole (12) is connected to the airbag in the diving life jacket through the air tube inside the diving life jacket.

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