Explosion-proof mechanism of diving flashlight

Abstract

The application relates to a flashlight technical field, especially to an explosion-proof mechanism of a diving flashlight, which comprises a flashlight body, the flashlight body comprises a head end, a barrel body and a tail end cover, the barrel body is internally used for assembling a battery, the head end and the tail end cover are respectively arranged at two ends of the barrel body, and the tail end cover is provided with an explosion-proof assembly used for preventing the battery in the barrel body from exploding due to gas generated by self-ignition. When the device is used, if the battery in the barrel body of the flashlight body is self-ignited, the battery self-ignition will generate a large amount of gas, so that the pressure in the barrel body rapidly rises. When the pressure reaches a preset critical value, the explosion-proof assembly immediately acts to form a pressure relief channel, so that the high-pressure gas is rapidly discharged, thereby ensuring that the pressure in the barrel body is always within a safe range, fundamentally eliminating the possibility of explosion caused by excessively high pressure, making the safety guarantee more reliable, and improving the safety of the device.

Description

Technical Field

[0001] This application relates to the field of flashlight technology, and in particular to an explosion-proof mechanism for a diving flashlight. Background Technology

[0002] A diving flashlight is a professional lighting tool designed to cope with the harsh underwater environment. With its excellent waterproof and pressure-resistant performance, high brightness output, and user-friendly design, it has become the "eyes" for divers exploring the deep sea, shipwrecks, caves, and enjoying the beauty of the ocean at night. It is a key piece of equipment for ensuring safety and enhancing the diving experience.

[0003] In existing diving flashlights, the battery is located inside the flashlight body during daily use. However, the battery may spontaneously combust due to aging, external pressure, or short circuit caused by water ingress, producing gas that increases the internal pressure of the flashlight and may lead to an explosion. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide an explosion-proof mechanism and assembly method for a diving flashlight. This solves the problem that the battery inside the flashlight may spontaneously combust and generate gas due to aging, external pressure, or water ingress causing a short circuit, which increases the internal pressure of the flashlight and may lead to an explosion risk.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: an explosion-proof mechanism for a diving flashlight, comprising a flashlight body, the flashlight body including a head end, a barrel body and a tail end cap, the barrel body being used to assemble a battery, the head end and the tail end cap being respectively disposed at both ends of the barrel body, and the tail end cap being provided with an explosion-proof component for preventing the flashlight body from exploding due to gas generated by spontaneous combustion of the battery inside the barrel body.

[0006] Furthermore, the explosion-proof component includes a connecting cover, a valve, and a spring. The connecting cover is located on the side of the tail end cover near the cylinder body. The connecting cover has two air inlets. A connecting groove is located on the side of the connecting cover away from the cylinder body, between the two air inlets. A connecting hole is located on the side of the tail end cover away from the cylinder body. One end of the valve is inserted into the connecting hole of the tail end cover, and the other end of the valve abuts against the connecting groove. The spring is sleeved on the valve, and one end of the spring abuts against the inner wall of the tail end cover. A connecting component for pressing the other end of the spring is provided on the valve.

[0007] Furthermore, the connecting assembly includes a lock cover, one side of which has a plug hole, into which the valve is plugged and perpendicular to each other.

[0008] Furthermore, the connecting component also includes a snap fastener, and the valve's arc surface has an annular groove, into which the snap fastener engages, with one side of the snap fastener abutting against one side of the lock cover.

[0009] Furthermore, a sealing ring is fitted onto the end of the valve away from the buckle, and the arc surface of the sealing ring abuts against the inner wall of the tail cap.

[0010] Furthermore, an annular groove is provided on the side of the valve away from the latch, and the sealing ring is placed in the annular groove.

[0011] Furthermore, the outer wall of the connecting cover is threaded, and the inner wall of the tail end cover near the cylinder body is provided with a threaded groove, and the connecting cover is threaded into the threaded groove of the tail end cover.

[0012] In summary, this application includes at least one of the following beneficial technical effects: 1. When using the device, if the battery inside the flashlight body spontaneously combusts, the combustion will produce a large amount of gas, causing the internal pressure of the flashlight body to rise sharply. When the pressure reaches a preset critical value, the explosion-proof component will immediately activate, forming a pressure relief channel to quickly expel the high-pressure gas, thereby ensuring that the internal pressure of the flashlight body is always within a safe range. This fundamentally eliminates the possibility of an explosion due to excessive pressure, making safety more reliable and improving the safety of the device.

[0013] 2. During normal operation, the spring's preload presses the valve against the connecting groove via the connecting assembly, while its other end seals the connecting hole of the tail cap, ensuring overall airtightness. When the internal air pressure rises to a critical value due to a malfunction, the force of the gas on the connecting assembly overcomes the spring force, driving the valve to move. One end disengages from the connecting groove, while the other end opens the connecting hole, forming a pressure relief channel. After depressurization, when the air pressure force is lower than the spring's restoring force, the valve automatically returns to its original position under the spring's drive, resealing. This entire process constitutes a reliable passive safety cycle, further enhancing the device's safety.

[0014] 3. The combination of the snap-fit ​​and the annular groove is crucial for ensuring the precise operation of the pressure relief valve. It creates a screwless fastening joint, rigidly connecting the cover, snap-fit, and valve into a single unit. This ensures that the cover moves completely synchronously with the valve under spring pressure or gas thrust, achieving lossless power transmission from the cover to the valve and eliminating the risk of loosening between components. This contributes to the reliability and long-term stability of the entire explosion-proof mechanism. Attached Figure Description

[0015] Figure 1 This is an internal view of the tail cap in the embodiment; Figure 2 This is an exploded view of the tail cap in the embodiment; Figure 3 This is a schematic diagram of the overall structure of the embodiment.

[0016] Reference numerals: 1. Flashlight body; 11. Head end; 12. Body; 13. Tail end cap; 2. Explosion-proof component; 21. Connecting cap; 22. Valve; 221. Annular groove; 222. Sealing ring; 223. Annular groove; 23. Spring; 3. Connecting component; 31. Locking cap; 32. Buckle. Detailed Implementation

[0017] The present application will be further described in detail below with reference to the accompanying drawings.

[0018] Example, refer to Figures 1-3 An explosion-proof mechanism for a diving flashlight includes a flashlight body 1, comprising a head end 11, a barrel 12, and a tail end cap 13. The barrel 12 houses a battery. The head end 11 and tail end cap 13 are located at opposite ends of the barrel 12. The tail end cap 13 is equipped with an explosion-proof component 2 to prevent the flashlight body 1 from exploding due to spontaneous combustion of the battery inside the barrel 12. During use, if the battery inside the barrel 12 spontaneously combusts, it will generate a large amount of gas, causing a rapid increase in internal pressure. When the pressure reaches a preset critical value, the explosion-proof component 2 immediately activates, forming a pressure relief channel to quickly expel the high-pressure gas, thus ensuring that the internal pressure of the barrel 12 remains within a safe range. This fundamentally eliminates the possibility of explosion due to excessive pressure, providing more reliable safety and improving the overall safety of the device.

[0019] The explosion-proof component 2 includes a connecting cover 21, a valve 22, and a spring 23. The connecting cover 21 is located on the side of the tail end cover 13 near the cylinder body 12, and has two air inlets. A connecting groove is located on the side of the connecting cover 21 away from the cylinder body 12, between the two air inlets. A connecting hole is located on the side of the tail end cover 13 away from the cylinder body 12. One end of the valve 22 is inserted into the connecting hole of the tail end cover 13, and the other end of the valve 22 abuts against the connecting groove. The spring 23 is sleeved on the valve 22, and one end of the spring 23 abuts against the inner wall of the tail end cover 13. A connecting component 3 is provided on the valve 22 for pressing the other end of the spring 23. In normal operation, the preload of the spring 23 presses the valve 22 against the connecting groove through the connecting component 3, while its other end seals the connecting hole of the tail end cover 13, ensuring overall airtightness. When the internal air pressure rises to a critical value due to a malfunction, the force of the gas on the connecting component 3 overcomes the elastic force of the spring 23, driving the valve 22 to move. One end of the valve 22 disengages from the connecting groove, while the other end opens the connecting hole, forming a pressure relief channel. After pressure relief, when the air pressure force is lower than the reset force of the spring 23, the valve 22 automatically returns to its original position under the drive of the spring 23, re-sealing. The entire process constitutes a reliable passive safety cycle, further improving the safety of the device.

[0020] The connecting assembly 3 includes a locking cover 31. A insertion hole is provided on one side of the locking cover 31, into which the valve 22 is inserted perpendicularly. The locking cover 31, as the core of the connecting assembly 3, is vertically fitted to the valve 22 through its insertion hole, ensuring precise guidance of the valve 22. A spring 23 is pre-compressed between the inner wall of the tail cap 13 and the locking cover 31. The locking cover 31 provides precise bottom support for the spring 23 and transmits the preload force of the spring 23 to the valve 22 to maintain a normally closed seal. When the internal air pressure abnormally increases, the gas pressure acts directly on the locking cover 31, driving it to compress the spring 23, thus providing the core power for opening the valve 22.

[0021] The connecting component 3 also includes a snap-fit ​​32. The arc surface of the valve 22 has an annular groove 221, and the snap-fit ​​32 engages within the annular groove 221, with one side of the snap-fit ​​32 abutting against one side of the lock cover 31. This combination of the snap-fit ​​32 and the annular groove 221 is crucial for ensuring the precise operation of the pressure relief valve. It creates a screwless fastening node, rigidly connecting the lock cover 31, snap-fit ​​32, and valve 22 into a single unit. This ensures that under the pressure of the spring 23 or the thrust of the gas, the lock cover 31 can move completely synchronously with the valve 22, achieving lossless power transmission from the lock cover 31 to the valve 22, eliminating the risk of loosening between components, and ensuring the reliability and long-term stability of the entire explosion-proof mechanism.

[0022] A sealing ring 222 is fitted onto the end of valve 22 away from buckle 32, and the arc surface of the sealing ring 222 abuts against the inner wall of the tail cap 13. The sealing ring 222 is key to achieving the function of "normal sealing and overpressure release". Under normal conditions, the preload of spring 23, through valve 22, presses the sealing ring 222 tightly against the inner wall of tail cap 13, forming a static seal and ensuring the sealing of the flashlight body. When there is internal overpressure, valve 22 drives the sealing ring 222 to move and displace from the sealing surface to form a pressure relief channel; after pressure relief, spring 23 pushes it back to its original position to rebuild the seal.

[0023] An annular groove 223 is provided on the side of valve 22 away from snap fastener 32, and sealing ring 222 is disposed in an annular groove 223. The annular groove 223 provides precise installation positioning and a stable support base for sealing ring 222, which can effectively prevent sealing ring 222 from shifting, twisting or falling off during valve 22 movement or long-term use, thereby ensuring the long-term stability and reliability of the sealing interface.

[0024] The outer wall of the connecting cover 21 is threaded, and the inner wall of the tail cover 13 near the cylinder body 12 is provided with a threaded groove. The connecting cover 21 is threaded into the threaded groove of the tail cover 13. The threaded engagement provides a strong locking force, ensuring that the connecting cover 21 and the tail cover 13 are firmly connected. At the same time, the tight fit of the precision threads forms the first effective airtight barrier between the two, which works in conjunction with the internal sealing ring 222 to form a redundant sealing system. Furthermore, the threaded connection makes the device easy to disassemble and maintain, improving the convenience of the device.

[0025] Working principle: When the internal air pressure rises to a critical value due to a malfunction, the force of the gas on the locking cover 31 overcomes the elastic force of the spring 23, driving the valve 22 to move. One end of the valve 22 disengages from the connecting groove, while the other end opens the connecting hole, forming a pressure relief channel. After pressure relief, when the air pressure force is lower than the reset force of the spring 23, the valve 22 automatically returns to its original position under the drive of the spring 23, re-sealing. The entire process constitutes a reliable passive safety cycle, improving the safety of the device.

[0026] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An explosion-proof mechanism of a diving torch, comprising a torch body (1), characterized in that: The flashlight body (1) includes a head end (11), a body (12) and a tail end cap (13). The body (12) is used to assemble a battery. The head end (11) and the tail end cap (13) are respectively disposed at both ends of the body (12). The tail end cap (13) is provided with an explosion-proof component (2) to prevent the flashlight body (1) from exploding due to gas generated by spontaneous combustion of the battery inside the body (12).

2. The explosion-proof mechanism of a diving flashlight according to claim 1, characterized in that: The explosion-proof component (2) includes a connecting cover (21), a valve (22), and a spring (23). The connecting cover (21) is located on the side of the tail end cover (13) near the cylinder body (12). The connecting cover (21) has two air inlets. The connecting cover (21) has a connecting groove on the side away from the cylinder body (12) and is located between the two air inlets. The tail end cover (13) has a connecting hole on the side away from the cylinder body (12). One end of the valve (22) is inserted into the connecting hole of the tail end cover (13), and the other end of the valve (22) abuts against the connecting groove. The spring (23) is sleeved on the valve (22), and one end of the spring (23) abuts against the inner wall of the tail end cover (13). The valve (22) is provided with a connecting component (3) for pressing the other end of the spring (23).

3. The explosion-proof mechanism of a diving flashlight according to claim 2, characterized in that: The connecting component (3) includes a lock cover (31), which has a plug hole on one side. The valve (22) is plugged into the plug hole of the lock cover (31) and is perpendicular to each other.

4. The explosion-proof mechanism of a diving flashlight according to claim 3, characterized in that: The connecting component (3) also includes a buckle (32), and the arc surface of the valve (22) is provided with an annular groove (221). The buckle (32) is engaged in the annular groove (221), and one side of the buckle (32) abuts against one side of the lock cover (31).

5. The explosion-proof mechanism of a diving flashlight according to claim 4, characterized in that: A sealing ring (222) is fitted on one end of the valve (22) away from the buckle (32), and the arc surface of the sealing ring (222) abuts against the inner wall of the tail cap (13).

6. The explosion-proof mechanism of a diving flashlight according to claim 5, characterized in that: The valve (22) has an annular groove (223) on the side away from the buckle (32), and the sealing ring (222) is disposed in the annular groove (223).

7. The explosion-proof mechanism of a diving flashlight according to claim 2, wherein: The outer wall of the connecting cover (21) is threaded, and the inner wall of the tail cover (13) near the cylinder (12) is provided with a threaded groove. The connecting cover (21) is threaded into the threaded groove of the tail cover (13).

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