An explosion-proof lamp and an anti-disassembly detection method and assembly method thereof

Abstract

The application discloses an explosion-proof lamp and an anti-disassembly detection method and an assembling method thereof, wherein the explosion-proof lamp comprises an explosion-proof base and an explosion-proof cover which are connected with each other, the explosion-proof cover is connected with a transparent cover, the explosion-proof base and the explosion-proof cover are internally provided with an explosion-proof chamber, the transparent cover is provided with a visible area, and the explosion-proof chamber is connected with an anti-disassembly assembly; the anti-disassembly assembly is formed in one-way anti-disassembly linkage cooperation with the inner ratchet of the inner wall of the explosion-proof cover; when the explosion-proof cover and the explosion-proof base are normally screwed, the anti-disassembly linkage member in the anti-disassembly assembly cannot be triggered to move, the indicating member remains stationary and cannot trigger the indicating action; when the explosion-proof cover and the explosion-proof base are unscrewed, the anti-disassembly linkage member in the anti-disassembly assembly can be triggered to move, the indicating member rotates and triggers the indicating action, and cannot be reset, so that a reliable anti-disassembly recording function is realized, the mechanical linkage structure is completely adopted, the machining precision requirement of the explosion-proof shell is relatively low, and the manufacturing cost is significantly reduced.

Description

Technical Field

[0001] This invention relates to the field of explosion-proof lamp technology, specifically to an explosion-proof lamp and its anti-tampering detection method and assembly method. Background Technology

[0002] Explosion-proof lights are special lighting devices designed for hazardous environments where explosive gases, vapors, or dust may exist. Their core design principle is to ensure that the light fixture will not become an ignition source for the surrounding hazardous environment. Through reliable physical isolation, temperature limiting, and other explosion-proof structures, they prevent potential internal electric arcs or high temperatures from igniting external explosive mixtures, and are widely used in high-risk industries such as petroleum, chemical, and coal mining.

[0003] The safety performance of explosion-proof lights is closely related to the structure, materials, and assembly methods of their various components. Their explosion-proof function relies on the integrity of the overall structure and the coordinated action of each component. Therefore, arbitrary modification or replacement of components is strictly prohibited. Any unauthorized alteration may damage the explosion-proof structure of the light fixture, leading to decreased sealing performance, increased explosion-proof gaps, and other problems. This would cause it to lose its original explosion-proof capability, making it highly susceptible to explosions, fires, and other safety accidents in flammable and explosive environments, seriously threatening the safety of people and property.

[0004] Therefore, detecting whether the outermost shell of the explosion-proof lamp has been disassembled is the most direct and effective way to determine whether the explosion-proof structure of the lamp may have been damaged. Chinese patent CN120871265A discloses a tamper-proof detection method for a portable explosion-proof lamp. By setting detection contacts and sensors at the detachable structure and combining them with a detection module to form a detection loop, it can capture changes in the connection status of the detection contacts in real time after the detachable structure is disassembled. By comparing and analyzing the total detection data with the initial detection data, it can accurately identify whether the lamp has been disassembled illegally and the specific disassembled structure. While this solution, by setting a low-voltage detection circuit inside the explosion-proof lamp, can achieve tamper-proof detection, it has the following drawbacks: Setting corresponding detection contacts / sensors at the detachable structure of the explosion-proof lamp places higher demands on the processing precision and molding difficulty of the lamp shell, significantly increasing the production cost; secondly, the need to add a low-voltage detection circuit board and corresponding detection contacts / sensors inside the explosion-proof lamp inevitably leads to a significant change in the internal structure of the lamp, making product assembly more complex.

[0005] In view of this, there is an urgent need to design a new type of explosion-proof lamp solution to solve the technical defects of the aforementioned explosion-proof lamps. Summary of the Invention

[0006] To address the above problems, this invention provides an explosion-proof lamp and its anti-tamper detection and assembly methods.

[0007] In a first aspect of the invention, an explosion-proof lamp is provided, comprising an explosion-proof base and an explosion-proof cover connected to each other, a transparent cover being connected to the explosion-proof cover, an explosion-proof chamber being provided inside the explosion-proof base and the explosion-proof cover, a visible area being provided on the transparent cover, an anti-tampering component being connected inside the explosion-proof chamber, the anti-tampering component comprising a component base, a rotating shaft and an anti-tampering linkage member being disposed inside the component base, the rotating shaft being rotatably connected to the component base, a first end of the rotating shaft being connected to the anti-tampering linkage member, and a second end of the rotating shaft being connected to an indicator. An anti-detachment structure is provided between the component base and the explosion-proof base; the explosion-proof base and the explosion-proof cover are connected by a threaded connection, the anti-disassembly component is connected to the explosion-proof base, and the anti-disassembly linkage component is linked to the inner wall of the explosion-proof cover; during the process of tightening the threads of the explosion-proof base and the explosion-proof cover, the anti-disassembly linkage component does not drive the rotating shaft to rotate, and the indicator is not in the visible area; during the process of loosening the threads of the explosion-proof base and the explosion-proof cover, the anti-disassembly linkage component drives the rotating shaft to rotate, and the indicator is in the visible area.

[0008] In a second aspect of the present invention, a method for detecting the tamper resistance of an explosion-proof lamp is provided, comprising: Disassemble the assembled and undisassembled explosion-proof lamp housing, and loosen the threads of the explosion-proof base and explosion-proof cover; During the loosening process of the explosion-proof cover, the inner ratchet on the inner wall of the explosion-proof cover acts on the pawl of the transmission component. The transmission component applies a force to the linkage component, driving the linkage component to move inward. The rack part of the linkage component engages with the gear teeth to drive the gear to rotate. The gear drives the shaft to rotate until the linkage component can no longer drive the gear to rotate. At this time, the indicator rotates from the invisible area of ​​the transparent cover to the visible area of ​​the transparent cover, thus indicating that the explosion-proof light is currently in a disassembled state.

[0009] In a third aspect of the present invention, a method for assembling an explosion-proof lamp is provided, comprising: Assembly of the anti-tamper component: Connect the gear to one end of the rotating shaft, pass the other end of the rotating shaft through the shaft hole of the component seat, and place the gear in the first chamber. Sleeve the return spring on the sleeve of the transmission component. Pass the limiting part of the transmission component through the installation opening of the linkage component and place it in the stroke groove of the linkage component. The sleeve of the transmission component is inserted into the installation opening, so that the transmission component and the linkage component form a limiting fit. The two ends of the return spring abut against the end face of the pawl part of the transmission component and the end face of the blocking section of the linkage component, respectively. Then, install the linkage component, the transmission component and the return spring together into the first chamber and the second chamber. The rack part of the linkage component engages with the gear teeth. Fix the component sealing plate to the bottom of the component seat to complete the encapsulation of the anti-tamper linkage component. Assembly of internal components of the explosion-proof chamber; inserting the anti-tampering component into the component mounting groove of the mounting platform and fixing the anti-tampering component to the mounting platform with fasteners; the pawl part of the transmission component extends through the inner opening of the mounting platform into the annular mating cavity; mounting the LED circuit board and reflector on the mounting platform with fasteners, and fitting the indicator to the other end of the rotating shaft; Assembly of the explosion-proof lamp housing: Pair the explosion-proof cover with the transparent cover with the explosion-proof base, inserting the annular boss of the explosion-proof cover into the annular mating cavity. Tighten the explosion-proof cover onto the explosion-proof base through the engagement of internal and external threads. As the annular boss is gradually introduced into the annular mating cavity, the lower end face of the annular boss acts on the mounting slope of the ratchet part, causing the transmission component to deform and bend towards the inner opening of the mounting platform. At the same time, the inner ratchet of the inner wall of the explosion-proof cover will not exert a force on the transmission component towards the linkage component. Both the linkage component and the gear remain stable. When the explosion-proof cover and the explosion-proof base are fully tightened, the transmission component returns to its original position and abuts against the inner ratchet of the inner wall of the explosion-proof cover. The first mounting edge and the second mounting edge are fixed by fastening bolts.

[0010] Compared with the prior art, the technical solution provided by this invention has the following advantages: This explosion-proof light utilizes an internal anti-tampering component. This component, along with the internal ratchet on the inner wall of the explosion-proof cover, forms a one-way anti-tampering linkage: when the explosion-proof cover and the explosion-proof base are tightened normally, the anti-tampering linkage component in the anti-tampering component will not be activated, and the indicator will remain stationary without triggering any indication. When the explosion-proof cover and the explosion-proof base are loosened, the anti-tampering linkage component in the anti-tampering component will be activated, causing the indicator to rotate and triggering an indication, which cannot be reset, thus achieving a reliable anti-tampering recording function.

[0011] Explosion-proof lights directly indicate whether the light fixture has been disassembled by the change in position of the indicator in the visible area of ​​the transparent cover. No testing instruments are needed; the possibility of damage to the explosion-proof sealing structure can be determined by visual observation alone. Explosion-proof lights adopt a completely mechanical linkage structure, eliminating the need for precision detection contacts or sensors on the housing, as well as the need for built-in low-voltage detection circuit boards. This reduces the precision requirements for the explosion-proof housing and avoids the increased mold complexity and molding difficulty caused by integrated electronic components, thus significantly reducing manufacturing costs.

[0012] The tamper-proof component of this explosion-proof light is an independent modular part that can be installed as a whole into the mounting groove of the explosion-proof base. It requires no changes to the main electrical layout of the explosion-proof chamber. The assembly process mainly involves the mating and tightening of mechanical parts, eliminating the need for circuit soldering, wiring, or sensor calibration. This simplifies product assembly, improves reliability, and increases production efficiency. Furthermore, the entire tamper-proof detection mechanism is a purely mechanical structure that does not require electricity during operation. This avoids the additional electrical safety risks that might arise from adding low-voltage circuits within the explosion-proof chamber and eliminates the possibility of loss of tamper-proof functionality due to electronic component failure. Attached Figure Description

[0013] Figure 1 This is a perspective view of an explosion-proof lamp according to an embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram of an explosion-proof lamp according to an embodiment of the present invention.

[0015] Figure 3 This is a perspective view of the anti-tamper component according to an embodiment of the present invention.

[0016] Figure 4 This is a schematic diagram of the explosion of the anti-tamper component in an embodiment of the present invention.

[0017] Figure 5 This is a schematic diagram of the anti-tamper component after the component cover plate has been removed from the bottom of the anti-tamper component according to an embodiment of the present invention.

[0018] Figure 6 This is a perspective view of the component base in an embodiment of the present invention.

[0019] Figure 7 This is a schematic diagram showing the connection of the anti-disassembly linkage component, the rotating shaft, and the indicator in an embodiment of the present invention.

[0020] Figure 8 This is a perspective view of the explosion-proof cover and transparent cover according to an embodiment of the present invention.

[0021] Figure 9 This is a perspective view of the explosion-proof lamp according to an embodiment of the present invention after removing the explosion-proof cover and the transparent cover.

[0022] Figure 10 This is a front view of the explosion-proof lamp according to an embodiment of the present invention after removing the explosion-proof cover and the transparent cover.

[0023] Figure 11 for Figure 10 Sectional view of AA.

[0024] Figure 12 This is a side view of an explosion-proof lamp according to an embodiment of the present invention.

[0025] Figure 13 for Figure 12 A cross-sectional view of BB.

[0026] Explanation of reference numerals in the attached drawings: 1. Explosion-proof base; 11. Mounting platform; 111. External thread section; 112. Internal extension section; 113. Component mounting groove; 114. Inner opening; 115. Fixing groove; 12. First mounting edge; 13. Annular mating cavity; 2. Explosion-proof cover; 21. Second mounting edge; 22. Annular boss; 221. Internal thread section; 222. Internal gear ring section; 223. Internal ratchet; 23. Sealing groove; 3. Transparent cover; 31. Visible area; 4. Explosion-proof chamber; 5. Anti-tamper component; 51. Component base; 511. First chamber; 512. Second chamber; 513. Shaft hole; 514. Base opening; 515. Locking groove; 516. Fixing 52. Rotating shaft; 53. Indicator; 54. Gear; 541. Gear tooth; 55. Linkage component; 551. Rack part; 5511. Locking point protrusion; 552. Connecting part; 5521. Anti-detachment protrusion; 553. Mating part; 5531. Side section; 5532. Blocking section; 5533. Mounting opening; 554. Rack tooth; 555. Stroke groove; 56. Transmission component; 561. Limiting part; 562. Sleeve rod part; 563. Pawl part; 5631. Assembly inclined surface; 57. Return spring; 58. Component sealing plate; 6. LED circuit board; 61. Lighting lamp bead; 62. Indicator light bead; 7. Reflector; 71. Light emission hole; 8. Sealing ring; 9. Fastening bolt. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] Combined with appendix Figure 1 To be continued Figure 13The present invention provides an explosion-proof lamp, comprising an explosion-proof base 1 and an explosion-proof cover 2 connected to each other. A transparent cover 3 is connected to the explosion-proof cover 2. An explosion-proof chamber 4 is provided inside the explosion-proof base 1 and the explosion-proof cover 2. A visible area 31 is provided on the transparent cover 3. An anti-tamper component 5 is connected inside the explosion-proof chamber 4. The anti-tamper component 5 includes a component base 51. A rotating shaft 52 and an anti-tamper linkage component are provided inside the component base 51. The rotating shaft 52 is rotatably connected to the component base 51. The first end of the rotating shaft 52 is connected to the anti-tamper linkage component, and the second end of the rotating shaft 52 is connected to an indicator 53. The anti-tamper linkage... An anti-detachment structure is provided between the component and the component seat 51; the explosion-proof seat 1 and the explosion-proof cover 2 are connected by a threaded connection, the anti-disassembly component 5 is connected to the explosion-proof seat 1, and the anti-disassembly linkage component is linked to the inner wall of the explosion-proof cover 2; during the process of tightening the threads of the explosion-proof seat 1 and the explosion-proof cover 2, the anti-disassembly linkage component does not drive the rotating shaft 52 to rotate, and the indicator 53 is not in the visible area 31; during the process of loosening the threads of the explosion-proof seat 1 and the explosion-proof cover 2, the anti-disassembly linkage component drives the rotating shaft 52 to rotate, and the indicator 53 is in the visible area 31.

[0030] In this embodiment, it should be noted that the indicator 53 of a normally undisassembled explosion-proof lamp is not located in the visible area 31, meaning that the indicator 53 inside cannot be seen through the visible area 31 of the transparent cover 3 from the outside. However, the process of loosening the threads of the explosion-proof base 1 and the explosion-proof cover 2 to drive the rotating shaft 52 to rotate is a gradual process. Therefore, during the process of loosening the threads of the explosion-proof base 1 and the explosion-proof cover 2 of the explosion-proof lamp, the indicator 53 gradually enters the visible area 31.

[0031] In this embodiment, the indicator 53 does not rotate during the tightening of the threads of the explosion-proof base 1 and the explosion-proof cover 2. The indicator 53 rotates during the loosening of the threads of the explosion-proof base 1 and the explosion-proof cover 2. Its core structure is as follows: the anti-tamper linkage component in the anti-tamper assembly 5 engages unidirectionally with the inner wall of the explosion-proof cover 2. Furthermore, the angle at which the indicator 53 rotates with the rotating shaft 52 is limited; that is, after the explosion-proof base 1 and the explosion-proof cover 2 are loosened by a certain angle, the indicator 53 is fully exposed in the visible area 31 and no longer rotates. The specific structure of the anti-tamper assembly 5 will be described in the following embodiments.

[0032] In this embodiment, an anti-detachment structure is provided between the anti-detachment linkage component and the component base 51 to ensure that the anti-detachment linkage component cannot be detached from the component base 51, and also to ensure that the position of the anti-detachment linkage component of the anti-detachment component 5 remains unchanged during the assembly of the explosion-proof lamp.

[0033] In this embodiment of the invention, the explosion-proof lamp directly indicates whether it has been disassembled by the position change of the indicator 53 in the visible area 31 of the transparent cover. No testing instruments are needed; the possibility of damage to the explosion-proof sealing structure can be determined by visual observation alone. The explosion-proof lamp adopts a completely mechanical linkage structure, eliminating the need for precision detection contacts or sensors on the housing and the need for built-in low-voltage detection circuit boards. This reduces the processing precision requirements for the explosion-proof housing and avoids the increased mold complexity and molding difficulty caused by integrated electronic components, thereby significantly reducing manufacturing costs.

[0034] In this embodiment, as shown in the appendix Figure 3 To be continued Figure 7 As shown, the anti-tamper linkage component includes a gear 54, a linkage member 55, a transmission member 56, and a return spring 57. The gear 54, the linkage member 55, and the transmission member 56 are all located on the same working plane. The gear 54 is connected to the first end of the rotating shaft 52. One end of the linkage member 55 meshes with the gear 54, and the other end of the linkage member 55 is movably connected to the transmission member 56. The two ends of the return spring 57 abut against the linkage member 55 and the transmission member 56 respectively. The return spring 57 applies a force to the transmission member 56 in a direction away from the linkage member 55.

[0035] In this embodiment, the gear 54, the linkage 55, and the transmission member 56 are all located on the same working plane, so that after the transmission member 56 acts on the linkage 55, it can directly drive the linkage 55 to move, thereby driving the gear 54 to rotate, ensuring the reliability of the force transmission path of the anti-tamper linkage component.

[0036] In this embodiment, the reset spring 57 enables the linkage 55 and the transmission 56 to maintain an effective length as a whole, thereby ensuring that when the anti-disassembly linkage component drives the gear 54 to rotate, the transmission 56 can still be linked and connected with the inner wall of the explosion-proof cover 2.

[0037] In this embodiment, as shown in the appendix Figure 7As shown, the linkage 55 includes a rack portion 551, a connecting portion 552, and a mating portion 553 arranged sequentially. One side of the rack portion 551 has rack teeth 554, and the outer periphery of the gear 54 has gear teeth 541. The tooth profiles of the rack teeth 554 mesh with the tooth profiles of the gear teeth 541. One side of the mating portion 553 has a semi-enclosed travel groove 555. The mating portion 553 includes a side section 5531 and a blocking section 5532 located on the outer periphery of the travel groove 555. The side section 5531 and the blocking section 5532 have... The installation opening 5533 is provided. The transmission component 56 includes a limiting part 561, a sleeve part 562, and a pawl part 563 arranged sequentially. The limiting part 561 is located in the stroke groove 555. The sleeve part 562 passes through the installation opening 5533. The pawl part 563 is linked to the inner wall of the explosion-proof cover 2. The return spring sleeve 57 is provided on the outer periphery of the sleeve part 562. One end of the return spring 57 abuts against the end face of the pawl part 563, and the other end of the return spring 57 abuts against the end face of the blocking section 5532.

[0038] In this embodiment, the transmission component 56 is not integrally formed. The limiting part 561 is connected to one end of the sleeve part 562 by a snap-fit ​​structure so that the return spring 57 can be assembled to the sleeve part 562. In order to ensure the reliability of the connection between the limiting part 561 and the sleeve part 562, ultrasonic welding is performed after the snap-fit ​​is completed.

[0039] In this embodiment, the limiting part 561 is restricted in its movement within the travel groove 555, and the mounting opening 5533 is used to assemble the limiting part 561 into the travel groove 555.

[0040] In this embodiment, it is not necessary for the limiting part 561 to act on the inner end face of the stroke groove 555 to drive the linkage 55 to move. The movement of the transmission member 56 can also drive the reset spring 57 to move and compress, which can also drive the linkage 55 to move.

[0041] In this embodiment, as shown in the appendix Figure 3 To be continued Figure 7As shown, the component mounting cavity is provided at the bottom of the component seat 51. The component mounting cavity includes a first chamber 511 and a second chamber 512 that are interconnected. The gear 54 and the rack portion 551 are both located in the first chamber 511. The component seat 51 has a shaft hole 513 that faces the first chamber 511. The rotating shaft 52 is connected in the shaft hole 513. The transmission component 56 and the mating portion 553 are both located in the second chamber 512. The side wall of the component seat 51 has a seat opening 514 that communicates with the second chamber 512. The pawl portion 563 extends to the outside of the seat opening 514. The pawl portion 563 has an assembly inclined surface 5631 on the side near the indicator 53. The bottom of the component seat 51 is connected to a component sealing plate 58, which is fixed to the component seat 51 by fasteners.

[0042] In this embodiment, there is a narrow channel between the first chamber 511 and the second chamber 512, and the connecting part 552 is connected in the channel. The first chamber 511 and the second chamber 512 are located at the bottom of the component base 51, which facilitates the assembly of the anti-tamper linkage component. The component sealing plate 58 is used to encapsulate the anti-tamper linkage component in the corresponding chamber.

[0043] In this embodiment, both the linkage 55 and the transmission 56 have a certain deformation capability.

[0044] In this embodiment, the pawl portion 563 is provided with an assembly ramp 5631 on the side near the indicator 53. This is to prevent interference between the explosion-proof seat 1 and the explosion-proof cover 2 during the tightening process. The explosion-proof cover 2 will act on the assembly ramp 5631 to cause the pawl portion 563 to briefly retract towards the second chamber 512. After the explosion-proof seat 1 and the explosion-proof cover 2 are installed in place, the pawl portion 563 will reset and be linked to the inner wall of the explosion-proof cover 2.

[0045] In this embodiment, as shown in the appendix Figure 6 and attached Figure 7 As shown, the inner wall of the second chamber 512 has a series of continuously arranged locking grooves 515 opposite to the rack portion 551. The rack portion 551 has a locking protrusion 5511 on the side near the locking groove 515. The locking protrusion 5511 is connected in the locking groove 515. An anti-detachment protrusion 5521 is provided at the junction of the rack portion 551 and the connecting portion 552. The anti-detachment protrusion 5521 is located in the first chamber 511 and is used to prevent the rack portion 551 from detaching from the first chamber 511.

[0046] In this embodiment, the engagement of the locking protrusion 5511 within the locking groove 515 determines the range of rotatable angles that the linkage 55 can drive the gear 54; the anti-detachment protrusion 5521 is the anti-detachment structure provided between the aforementioned anti-detachment linkage component and the component seat 51.

[0047] In this embodiment, as shown in the appendix Figure 7 To be continued Figure 13 As shown, the explosion-proof base 1 includes a mounting platform 11 located within the explosion-proof chamber 4 and a first mounting edge 12 located on the outer periphery of the mounting platform 11. An annular mating cavity 13 is provided between the mounting platform 11 and the first mounting edge 12. The outer side of the mounting platform 11 includes an external thread section 111 and an inner extension section 112. The explosion-proof cover 2 includes a second mounting edge 21 and an annular boss 22. The annular boss 22 is connected within the annular mating cavity 13. The inner wall of the annular boss 22, opposite the external thread section 111 and the inner extension section 112, is respectively provided with an internal thread section 221 and an internal gear ring section. 222, the inner wall of the internal gear ring section 222 is provided with an internal ratchet 223, the mounting platform 11 is provided with a component mounting groove 113, the anti-disassembly component 5 is connected in the component mounting groove 113, the inner extension section 112 is provided with an inner opening 114 at the position opposite to the seat opening 514, the pawl part 563 passes through the inner opening 114 and is linked to the internal ratchet 223, the two ends of the component seat 51 are provided with fixing parts 516, the two ends of the component mounting groove 113 are provided with fixing grooves 115, and the fixing parts 516 are connected in the fixing grooves 115 by fasteners.

[0048] In this embodiment, after the external thread section 111 and the internal thread section 221 are connected in place, the inner extension section 112 is directly opposite the internal gear ring section 222, thereby enabling the pawl portion 563 to form a one-way linkage engagement with the internal ratchet 223 on the inner wall of the internal gear ring section 222.

[0049] In this embodiment, as shown in the appendix Figure 13 As shown, the direction in which the explosion-proof base 1 and the explosion-proof cover 2 are tightened is the rotation direction C in the attached figure, and the direction in which the explosion-proof base 1 and the explosion-proof cover 2 are loosened is the rotation direction D in the attached figure.

[0050] In this embodiment, as shown in the appendix Figure 2 and appendix Figure 9 To be continued Figure 13As shown, the explosion-proof light also includes an LED circuit board 6 and a reflector 7. Both the LED circuit board 6 and the reflector 7 are fixed on the mounting platform 11. The LED circuit board 6 is provided with lighting beads 61 and indicator beads 62. The reflector 7 is provided with a light-emitting hole 71 corresponding to the position of the lighting beads 61. The indicator beads 62 are located close to the indicator 53. When the indicator 53 is in the visible area 31, the indicator 53 blocks the indicator beads 62.

[0051] In this embodiment, when the explosion-proof lamp is working, both the lighting bulb 61 and the indicator bulb 62 will light up. The indicator bulb 62 can be a green LED. If the explosion-proof cover of the current explosion-proof lamp has not been removed, the indicator bulb 62 will not be obstructed by the indicator 53, and the green indicator bulb 62 can be observed through the visible area 31, indicating that the current explosion-proof lamp is an unremoved product. If the explosion-proof cover of the current explosion-proof lamp has been removed, the indicator bulb 62 will be obstructed by the indicator 53, and the indicator bulb 62 cannot be observed to light up through the visible area 31, indicating that the current explosion-proof lamp has been abnormally removed. By adding the indicator bulb 62 to the LED circuit board 6, it is more accurate to indicate whether the current explosion-proof lamp has been removed.

[0052] In this embodiment, as shown in the appendix Figure 2 and attached Figure 8 As shown, a sealing groove 23 is provided on the inner side of the second mounting edge 21, and a sealing ring 8 is provided in the sealing groove 23. The sealing ring 8 is pressed between the first mounting edge 12 and the second mounting edge 21. The first mounting edge 12 and the second mounting edge 21 are fixed together by fastening bolts 9. The connecting edge between the transparent cover 3 and the explosion-proof cover 2 is covered with a sealing adhesive layer.

[0053] In this embodiment, after the explosion-proof base 1 and the explosion-proof cover 2 are tightened, they are then fixed and locked in place by the fastening bolts 9. Simultaneously, a sealing ring 8 is provided at the gap between the first mounting edge 12 and the second mounting edge 21, further improving the explosion-proof sealing performance of the explosion-proof lamp. In another embodiment, the sealing groove 23 may also be formed on the first mounting edge 12, or the sealing groove 23 may be provided on both the first mounting edge 12 and the second mounting edge 21.

[0054] In this embodiment, the sealant layer between the transparent cover 3 and the explosion-proof cover 2 is applied using an adhesive bonding process.

[0055] In this embodiment of the invention, the explosion-proof lamp is equipped with an anti-tamper component 5 inside its explosion-proof chamber 4. The anti-tamper component 5 and the inner ratchet 223 on the inner wall of the explosion-proof cover 2 form a one-way anti-tamper linkage: when the explosion-proof cover 2 and the explosion-proof base 1 are tightened normally, the anti-tamper linkage component in the anti-tamper component 5 will not be triggered, and the indicator 53 will remain stationary and will not trigger an indication action; when the explosion-proof cover 2 and the explosion-proof base 1 are loosened, the anti-tamper linkage component in the anti-tamper component 5 will be triggered, the indicator 53 will rotate accordingly and trigger an indication action, and it cannot be reset, thereby realizing a reliable anti-tamper recording function.

[0056] The anti-tamper component 5 of this explosion-proof lamp is an independent modular part that can be installed as a whole into the component mounting groove 113 of the explosion-proof base 1. This eliminates the need to change the main electrical layout of the explosion-proof chamber 4. The assembly process mainly involves the mating and tightening of mechanical parts, eliminating the need for circuit soldering, wiring, or sensor calibration. This simplifies product assembly, improves reliability, and increases production efficiency. Furthermore, the entire anti-tamper detection mechanism is a purely mechanical structure that does not require electricity during operation. This avoids the additional electrical safety risks that might arise from adding low-voltage circuits within the explosion-proof chamber and also eliminates the possibility of loss of anti-tamper functionality due to electronic component failure.

[0057] Example 2

[0058] Combined with appendix Figure 1 To be continued Figure 13 The present invention provides a method for detecting the tamper resistance of an explosion-proof lamp, using the explosion-proof lamp described in Example 1, comprising: Disassemble the assembled and undisassembled explosion-proof lamp housing, and loosen the threads of the explosion-proof base 1 and explosion-proof cover 2; During the loosening process of the explosion-proof cover 2, the inner ratchet 223 of the inner wall of the explosion-proof cover 2 acts on the pawl 563 of the transmission component 56. The transmission component 56 applies a force to the linkage component 55, driving the linkage component 55 to move towards the first chamber 511. The rack portion 551 of the linkage component 55 engages with the gear teeth 541 of the gear 54 to drive the gear 54 to rotate. The gear 54 drives the rotating shaft 52 to rotate until the linkage component 55 can no longer drive the gear 54 to rotate. At this time, the indicator 53 rotates from the invisible area of ​​the transparent cover 3 to the visible area 31 of the transparent cover 3, thereby indicating that the current explosion-proof light is in the disassembled state.

[0059] The explosion-proof lamp anti-tampering detection method of the present invention aims to explain the operating principle of the explosion-proof lamp from the normal un-disassembled state to the disassembled state.

[0060] Once the indicator 53 is rotated to the visible area 31 of the transparent cover 3, even if the explosion-proof cover 2 is tightened again, the indicator 53 can no longer be reset because the transmission component 56 of the anti-tamper assembly 5 and the inner ratchet 223 of the inner wall of the explosion-proof cover 2 form a one-way anti-tamper linkage.

[0061] Example 3

[0062] Combined with appendix Figure 1 To be continued Figure 13 The present invention provides a method for assembling an explosion-proof lamp, used to assemble the explosion-proof lamp described in Example 1, comprising: Assembly of the anti-tamper component 5: Connect the gear 54 to one end of the rotating shaft 52, and pass the other end of the rotating shaft 52 through the shaft hole 513 of the component seat 51, so that the gear 54 is placed in the first chamber 511. Sleeve the return spring 57 onto the sleeve portion 562 of the transmission component 56. Pass the limiting portion 561 of the transmission component 56 through the mounting opening 5533 of the linkage component 55 and place it in the stroke groove 555 of the linkage component 55. The sleeve portion 562 of the transmission component 56 passes through the mounting opening 5533, so that the transmission... The component 56 and the linkage component 55 form a limiting fit. The two ends of the return spring 57 abut against the end face of the pawl part 563 of the transmission component 56 and the end face of the blocking section 5532 of the linkage component 55, respectively. Then, the linkage component 55, the transmission component 56 and the return spring 57 are installed into the first chamber 511 and the second chamber 512. The rack part 551 of the linkage component 55 engages with the gear teeth 541 of the gear 54. The component sealing plate 58 is fixed to the bottom of the component base 51, thus completing the encapsulation of the anti-tamper linkage component 5. Assembly of internal components of explosion-proof chamber 4; installation of anti-disassembly component 5 into component mounting groove 113 of mounting platform 11, and fixing anti-disassembly component 5 to mounting platform 11 with fasteners; pawl portion 563 of transmission component 56 extends through inner opening 114 of mounting platform 11 into annular mating cavity 13; mounting LED circuit board 6 and reflector 7 on mounting platform 11 with fasteners, and sleeve indicator 53 on the other end of rotating shaft 52; Assembly of the explosion-proof lamp housing: Pair the explosion-proof cover 2 with the transparent cover 3 with the explosion-proof base 1, so that the annular boss 22 of the explosion-proof cover 2 is inserted into the annular mating cavity 13. The explosion-proof cover 2 is tightened onto the explosion-proof base 1 through the engagement of the internal and external threads. During the process of gradually inserting the annular boss 22 into the annular mating cavity 13, the lower end face of the annular boss 22 acts on the mounting slope 5631 of the ratchet part 563, causing the transmission component 56 to deform and bend towards the inner opening 114 of the mounting platform 11. At the same time, the inner ratchet 223 of the inner wall of the explosion-proof cover 2 will not exert a force on the transmission component 56 towards the linkage component 55. The linkage component 55 and the gear 54 remain stable. When the explosion-proof cover 2 and the explosion-proof base 1 are fully tightened, the transmission component 56 is reset and abuts against the inner ratchet 223 of the inner wall of the explosion-proof cover 2. The first mounting edge 12 and the second mounting edge 21 are fixed by the fastening bolts 9.

[0063] In this embodiment, the above-mentioned explosion-proof lamp assembly method mainly describes the assembly of the explosion-proof lamp anti-disassembly structure. Some non-essential steps are not described, such as the arrangement of the internal wiring of the explosion-proof lamp. However, it should be noted that this does not affect the completeness of the explosion-proof lamp anti-disassembly structure assembly in this embodiment.

[0064] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An explosion-proof light, comprising an explosion-proof base and an explosion-proof cover connected to each other, wherein a transparent cover is connected to the explosion-proof cover, an explosion-proof chamber is provided inside the explosion-proof base and the explosion-proof cover, and a visible area is provided on the transparent cover, characterized in that, An anti-tamper assembly is connected to the explosion-proof chamber. The anti-tamper assembly includes a component base, a rotating shaft and an anti-tamper linkage member are disposed within the component base, the rotating shaft is rotatably connected to the component base, a first end of the rotating shaft is connected to the anti-tamper linkage member, and a second end of the rotating shaft is connected to an indicator. An anti-detachment structure is provided between the anti-tamper linkage member and the component base. The explosion-proof base and the explosion-proof cover are connected by a threaded connection, the anti-tamper assembly is connected to the explosion-proof base, and the anti-tamper linkage member is linked to the inner wall of the explosion-proof cover. During the tightening of the threads of the explosion-proof base and the explosion-proof cover, the anti-tamper linkage member does not drive the rotating shaft to rotate, and the indicator is not in the visible area. During the loosening of the threads of the explosion-proof base and the explosion-proof cover, the anti-tamper linkage member drives the rotating shaft to rotate, and the indicator is in the visible area. The anti-tamper linkage component includes a gear, a linkage member, a transmission member, and a return spring. The gear, the linkage member, and the transmission member are all located on the same working plane. The gear is connected to the first end of the rotating shaft. One end of the linkage member meshes with the gear, and the other end of the linkage member is movably connected to the transmission member. The two ends of the return spring abut against the linkage member and the transmission member, respectively. The return spring applies a force to the transmission member away from the linkage member. The linkage component includes a rack portion, a connecting portion, and a mating portion arranged in sequence, and the transmission component includes a pawl portion; The component mounting cavity is provided at the bottom of the component base. The component mounting cavity includes a first chamber and a second chamber that are interconnected. The gear and the rack are both located in the first chamber, and the transmission component and the mating part are both located in the second chamber. The side wall of the component base is provided with a base opening that communicates with the second chamber, and the pawl extends to the outside of the base opening. During the loosening process of the explosion-proof cover, the inner ratchet of the inner wall of the explosion-proof cover acts on the pawl of the transmission component. The transmission component applies a force to the linkage component, driving the linkage component to move towards the first chamber. The rack part of the linkage component engages with the gear teeth to drive the gear to rotate. The gear drives the rotating shaft to rotate until the linkage component can no longer drive the gear to rotate. At this time, the indicator rotates from the invisible area of ​​the transparent cover to the visible area of ​​the transparent cover.

2. The explosion-proof lamp according to claim 1, characterized in that, The rack portion has rack teeth on one side, and the gear has gear teeth on its outer periphery. The tooth profiles of the rack teeth mesh with the tooth profiles of the gear teeth. The mating portion has a semi-closed stroke groove on one side. The mating portion includes a side section and a blocking section located on the outer periphery of the stroke groove. The side section and the blocking section have installation openings. The transmission component includes a limiting portion, a sleeve portion, and a pawl portion arranged in sequence. The limiting portion is located in the stroke groove. The sleeve portion passes through the installation opening. The pawl portion is linked to the inner wall of the explosion-proof cover. The return spring is sleeved on the outer periphery of the sleeve portion. One end of the return spring abuts against the end face of the pawl portion, and the other end of the return spring abuts against the end face of the blocking section.

3. The explosion-proof lamp according to claim 2, characterized in that, The component base has a shaft hole facing the first chamber. The rotating shaft is connected to the shaft hole. The pawl has an assembly ramp on the side near the indicator. The bottom of the component base is connected to a component sealing plate, which is fixed to the component base by fasteners.

4. The explosion-proof lamp according to claim 3, characterized in that, The inner wall of the second chamber has a series of continuously arranged locking grooves opposite the rack portion. The rack portion has a locking protrusion on the side near the locking groove, and the locking protrusion is connected in the locking groove. An anti-detachment protrusion is provided at the junction of the rack portion and the connecting portion. The anti-detachment protrusion is located in the first chamber and is used to prevent the rack portion from detaching from the first chamber.

5. The explosion-proof lamp according to claim 3, characterized in that, The explosion-proof base includes a mounting platform located inside the explosion-proof chamber and a first mounting edge located on the outer periphery of the mounting platform. An annular mating cavity is provided between the mounting platform and the first mounting edge. The outer side of the mounting platform includes an external thread section and an inner extension section. The explosion-proof cover includes a second mounting edge and an annular boss. The annular boss is connected to the annular mating cavity. The inner wall of the annular boss is provided with an internal thread section and an internal gear ring section respectively at the positions of the external thread section and the inner extension section. The inner wall of the internal gear ring section is provided with internal ratchet teeth. A component mounting groove is opened on the mounting platform. The anti-tamper component is connected in the component mounting groove. An inner opening is opened at the position of the inner extension section opposite the opening of the base body. The ratchet portion passes through the inner opening and is linked to the internal ratchet teeth. Fixed portions are provided at both ends of the component base body. Fixed grooves are provided at both ends of the component mounting groove. The fixed portions are connected in the fixed grooves by fasteners.

6. The explosion-proof lamp according to claim 5, characterized in that, It also includes an LED circuit board and a reflector. Both the LED circuit board and the reflector are fixed on the mounting platform. The LED circuit board is provided with lighting beads and indicator beads. The reflector is provided with a light-emitting hole corresponding to the position of the lighting beads. The indicator beads are set close to the indicator. When the indicator is in the visible area, the indicator blocks the indicator beads.

7. The explosion-proof lamp according to claim 5, characterized in that, A sealing groove is provided on the inner side of the first mounting edge and / or the second mounting edge, and a sealing ring is provided in the sealing groove. The sealing ring is pressed between the first mounting edge and the second mounting edge, and the first mounting edge and the second mounting edge are fixed together by fastening bolts; the connecting edge between the transparent cover and the explosion-proof cover is covered with a sealing adhesive layer.

8. A method for detecting the tamper-proof nature of an explosion-proof lamp, characterized in that, The explosion-proof lamp according to any one of claims 1 to 7 comprises: Disassemble the assembled and undisassembled explosion-proof lamp housing, and loosen the threads of the explosion-proof base and explosion-proof cover; During the loosening process of the explosion-proof cover, the inner ratchet on the inner wall of the explosion-proof cover acts on the pawl of the transmission component. The transmission component applies a force to the linkage component, driving the linkage component to move inward. The rack part of the linkage component engages with the gear teeth to drive the gear to rotate. The gear drives the shaft to rotate until the linkage component can no longer drive the gear to rotate. At this time, the indicator rotates from the invisible area of ​​the transparent cover to the visible area of ​​the transparent cover, thus indicating that the explosion-proof light is currently in a disassembled state.

9. A method for assembling an explosion-proof lamp, characterized in that, For assembling the explosion-proof lamp according to any one of claims 1 to 7, comprising: Assembly of the anti-tamper component: Connect the gear to one end of the rotating shaft, pass the other end of the rotating shaft through the shaft hole of the component seat, and place the gear in the first chamber. Sleeve the return spring on the sleeve of the transmission component. Pass the limiting part of the transmission component through the installation opening of the linkage component and place it in the stroke groove of the linkage component. The sleeve of the transmission component is inserted into the installation opening, so that the transmission component and the linkage component form a limiting fit. The two ends of the return spring abut against the end face of the pawl part of the transmission component and the end face of the blocking section of the linkage component, respectively. Then, install the linkage component, the transmission component and the return spring together into the first chamber and the second chamber. The rack part of the linkage component engages with the gear teeth. Fix the component sealing plate to the bottom of the component seat to complete the encapsulation of the anti-tamper linkage component. Assembly of internal components of the explosion-proof chamber; inserting the anti-tampering component into the component mounting groove of the mounting platform and fixing the anti-tampering component to the mounting platform with fasteners; the pawl part of the transmission component extends through the inner opening of the mounting platform into the annular mating cavity; mounting the LED circuit board and reflector on the mounting platform with fasteners, and fitting the indicator to the other end of the rotating shaft; Assembly of the explosion-proof lamp housing: Pair the explosion-proof cover with the transparent cover with the explosion-proof base, inserting the annular boss of the explosion-proof cover into the annular mating cavity. Tighten the explosion-proof cover onto the explosion-proof base through the engagement of internal and external threads. As the annular boss is gradually introduced into the annular mating cavity, the lower end face of the annular boss acts on the mounting slope of the ratchet part, causing the transmission component to deform and bend towards the inner opening of the mounting platform. At the same time, the inner ratchet of the inner wall of the explosion-proof cover will not exert a force on the transmission component towards the linkage component. Both the linkage component and the gear remain stable. When the explosion-proof cover and the explosion-proof base are fully tightened, the transmission component returns to its original position and abuts against the inner ratchet of the inner wall of the explosion-proof cover. The first mounting edge and the second mounting edge are fixed by fastening bolts.

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