Electronic cigarette charging explosion-proof performance test box

Abstract

The invention relates to the technical field of electronic cigarette test protection, in particular to an electronic cigarette charging explosion-proof performance test box, which is provided with a pressure relief buffer unit and a negative pressure buffer unit to realize multi-level high-pressure gas relief, effective diffusion and extraction of high-pressure gas generated by explosion, so that the safety and explosion-proof performance of equipment are improved, and the service life of the equipment is prolonged. And timely and effective pressure relief and buffering on the high-pressure gas under the condition that the electronic cigarette explodes are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic cigarette testing and protection, and in particular to an electronic cigarette charging explosion-proof performance test box. Background Art

[0002] The electronic cigarette charging explosion-proof performance test is an important method for evaluating the safety of electronic cigarettes during charging. The main goal of this test is to evaluate whether the electronic cigarette has the risk of fire or explosion in the charging state after undergoing a series of harsh environmental tests (such as water spray, overload and drop tests). Through subsequent charging tests that simulate extreme usage conditions, the safety and reliability of electronic cigarettes in actual use can be better verified.

[0003] Existing e-cigarette safety tests usually include multiple stages, including water spray, overload and drop tests. These tests ensure that the e-cigarette maintains structural and functional integrity under various physical and electrical stresses. However, after these preliminary tests are completed, the e-cigarette may still encounter the risk of fire or explosion during the charging test; existing e-cigarette charging explosion protection equipment is mostly simple physical barriers, lacking effective explosion pressure release and safety mitigation mechanisms, and it is difficult to effectively deal with the high-pressure gas shock that may be generated by the explosion during the e-cigarette charging test. It cannot effectively protect the test equipment and testers, and there are certain defects. Therefore, it is necessary to develop an e-cigarette charging explosion-proof performance test box. Summary of the invention

[0004] In view of the above-mentioned defects and problems, the present invention provides an electronic cigarette charging explosion-proof performance test box, which realizes multi-level high-pressure gas relief by setting a pressure relief buffer unit and a negative pressure buffer unit, effectively diffuses and extracts the high-pressure gas generated by the explosion, thereby improving the safety and explosion-proof performance of the equipment, and ensuring timely and effective pressure relief and buffering of the high-pressure gas in the event of an electronic cigarette explosion.

[0005] The solution adopted by the present invention to solve its technical problems is: an electronic cigarette charging explosion-proof performance test box, including a test box, a pressure relief buffer unit and a negative pressure buffer unit, the test box including a plurality of test chambers arranged in parallel, the test chamber is equipped with a cover plate, and a one-way flip cover is arranged on the inner side of the wire hole at the end of the test chamber; the pressure relief buffer unit includes a U-shaped buffer plate arranged in the test chamber, and a pressure relief hole corresponding to the U-shaped buffer plate is opened on the side wall between adjacent test chambers, the U-shaped buffer plate is elastically connected to the test chamber so that the U-shaped buffer plate can cover and block the pressure relief hole, and the U-shaped buffer plates in adjacent test chambers are staggered, and the staggered U-shaped buffer plates are respectively blocked with the corresponding pressure relief holes; the negative pressure buffer unit includes a bottom plate arranged at the bottom of the test chamber, a sealed cavity area is formed between the bottom plate and the bottom of the test chamber, and the bottom plate is supported by the supporting ribs at the bottom of the test chamber, and A brittle fracture portion corresponding to the supporting rib is provided on the bottom plate, and the sealed cavity area is connected to the negative pressure tank through a negative pressure tube. A pressure sensor is provided in the negative pressure tank, and a negative pressure piece for pumping pressure on the negative pressure tank is provided, so that the sealed cavity area can be adjusted to a constant negative pressure state; when the U-shaped buffer plate in the test chamber is impacted by the high-pressure gas generated by the explosion, the pressure relief hole will be opened under pressure to diffuse the high-pressure gas to the adjacent test chambers on both sides, and after the U-shaped buffer plates of the adjacent test chambers are impacted by the high-pressure gas, the internal pressure relief holes will be opened at the same time, so that the high-pressure gas will continue to diffuse to both sides, thereby relieving and buffering the high-pressure gas generated by the explosion; at the same time, the high-pressure gas generated by the explosion will break through the bottom plate and enter the negative pressure tube, and the high-pressure gas can be pumped into the negative pressure tank by utilizing the constant negative pressure maintained in the negative pressure tube. When the pressure sensor detects that the internal pressure of the negative pressure tank increases, the high-pressure gas is pumped out from the negative pressure tank through the negative pressure piece for pressure relief and buffering.

[0006] Furthermore, the pressure relief holes are symmetrically opened on the side wall between adjacent test chambers, and the U-shaped buffer plates in the adjacent test chambers can cover and block the left pressure relief hole and the right pressure relief hole respectively.

[0007] Furthermore, the rear side of the U-shaped buffer plate is connected to the end of the test chamber through a spring, and the U-shaped buffer plate covers and seals the pressure relief hole through the elastic pushing of the spring, and the U-shaped buffer plate is located above the bottom plate.

[0008] Furthermore, the top of the one-way flap is hingedly mounted on the inner side of the end of the test chamber, and the one-way flap can cover and seal the wire hole.

[0009] Furthermore, a matching wire groove is provided on the rear side of the one-way flip cover, and the matching wire groove vertically penetrates the one-way flip cover downward, and the matching wire groove can guide the power cord out of the wire hole.

[0010] Furthermore, the cover plate can be locked with the test chamber through a locking assembly, which includes a lock seat arranged at the end of the test chamber, on which a rocker arm is symmetrically provided, which is rotatably mounted on the lock seat through a rotating shaft, and a torsion spring is arranged between the rotating shaft and the lock seat, a clamping wheel is installed at the free end of the rocker arm, and the torsion spring controls the rocker arm to contract inward so that adjacent clamping wheels form a clamping lock head, and a shuttle-shaped clamping head is installed on the cover plate.

[0011] Furthermore, edges are provided on both sides of the bottom plate.

[0012] Furthermore, it also includes a secondary locking protection component arranged on the locking component, which is used to perform secondary locking on the locking component.

[0013] The beneficial effects of the present invention are as follows: the present invention has a unique structure and an ingenious design. The test box is composed of a plurality of test chambers arranged in parallel, and each test chamber is equipped with a cover plate and a one-way flip cover, so that a plurality of electronic cigarette units can be tested independently. The pressure relief unit and the negative pressure relief unit arranged in the test box can realize multi-level pressure relief. When the electronic cigarette explodes to generate high-pressure gas, the elastic connection of the U-shaped buffer plate can provide a preliminary pressure relief buffer, and the high-pressure gas can be rapidly diffused to the adjacent chambers through the staggered U-shaped buffer plates and the pressure relief holes, so as to gradually reduce the pressure in each chamber and avoid a single test chamber from being subjected to excessive pressure. Furthermore, through the elastic connection and staggered arrangement between the U-shaped buffer plate and the test chamber, and the corresponding blocking design with the pressure relief hole, the pressure relief hole can be flexibly opened when the electronic cigarette explodes, thereby improving the efficiency and reliability of pressure relief. The invention can improve the stability of the overall structure and effectively avoid excessive high pressure being concentrated in a single position; the sealed cavity area constructed between the bottom plate and the test chamber and the brittle fracture part set on the bottom plate itself can make the bottom plate rupture in a controlled manner in the case of a severe explosion, releasing high-pressure gas into the negative pressure pipe; the sealed cavity area is connected to the external negative pressure tank through the negative pressure pipe, and the constant negative pressure setting of the negative pressure pipe ensures that the gas can be quickly pumped away and stored in the negative pressure tank, thereby further reducing the pressure in the test chamber; and through the set pressure sensor and negative pressure part, when the pressure sensor detects that the pressure in the negative pressure tank increases, it can immediately trigger the negative pressure part to perform the pumping operation, thereby ensuring that the negative pressure tank is always at the optimal pressure level; the pressure relief buffer unit and the negative pressure buffer unit can provide a double protection mechanism for the test box, thereby improving the explosion-proof performance and overall reliability of the test box. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 Schematic diagram of the structure of a single test chamber.

[0016] Figure 3 This is one of the structural diagrams of the test box.

[0017] Figure 4 This is the second structural diagram of the test box.

[0018] Figure 5 One of the structural schematic diagrams of adjacent test chambers.

[0019] Figure 6 This is the second structural schematic diagram of adjacent test chambers.

[0020] Figure 7 A cross-sectional view of the interior of the test chamber.

[0021] Figure 8 Schematic diagram of the cooperation between the test chamber and the cover plate.

[0022] Fig. 9 This is one of the structural diagrams of the locking component.

[0023] Fig.10 This is the second structural diagram of the locking component.

[0024] In the figure: 1-test box, 11-test chamber, 12-wire hole, 13-cover plate, 2-locking assembly, 21-lock seat, 22-swing rod, 23-rotating shaft, 24-clamp wheel, 25-shuttle clamp, 3-one-way flip cover, 41-U-shaped buffer plate, 42-spring, 43-pressure relief hole, 51-bottom plate, 52-brittle fracture part, 53-sealed cavity area, 54-support rib plate, 55-negative pressure tube, 56-negative pressure tank, 57-negative pressure piece, 6-secondary locking protection assembly, 61-clamp tube, 62-T-shaped elastic pin, 62-top spring. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Example 1. Existing electronic cigarette safety tests usually include multiple stages, including water spray, overload and drop tests. These tests ensure that the electronic cigarette maintains structural and functional integrity under various physical and electrical stresses. However, after these preliminary tests are completed, the electronic cigarette may still encounter the risk of fire or explosion during the charging test. Existing electronic cigarette charging explosion protection equipment is mostly simple physical barriers, lacking effective explosion pressure release and safety mitigation mechanisms. It is difficult to effectively deal with the high-pressure gas shock that may be caused by the explosion during the electronic cigarette charging test, and cannot effectively protect the test equipment and testers.

[0027] In view of the above problems, the present embodiment provides a test box 1 for testing the explosion-proof performance of electronic cigarette charging, which can effectively alleviate and eliminate the high-pressure gas generated by the explosion of the electronic cigarette during the charging test, including a test box 1 main body, the test box 1 includes a test chamber 11, a pressure relief buffer unit and a negative pressure buffer unit, and the coordinated work of each unit ensures the explosion-proof safety of the electronic cigarette during the charging test; like Figure 1-4 As shown, the test box 1 is composed of a plurality of test chambers 11 arranged in parallel. The test chambers 11 can be arranged in parallel and staggered. A cover plate 13 is installed on the top of each test chamber 11. The cover plate 13 can be locked with the test chamber 11 through a locking assembly 2. Figure 8-10 As shown, the locking assembly 2 is composed of a lock seat 21 arranged at the end of the test chamber 11, and a swing rod 22 is symmetrically arranged on the lock seat 21. The swing rod 22 is installed on the lock seat 21 through a rotating shaft 23. A torsion spring is arranged between the rotating shaft 23 and the lock seat 21 to control the inward retraction of the swing rod 22. A clamping wheel 24 is provided at the free end of the swing rod 22. The torsion spring controls the swing rod 22 to retract inward so that the adjacent clamping wheels 24 form a clamping lock head, and a shuttle-shaped clamping head 25 is also provided on the cover plate 13; A wire hole 12 is provided at the end of the test chamber 11, and a one-way flap 3 is provided inside the wire hole 12 of the test chamber 11. The top of the one-way flap 3 is hingedly installed on the inner side of the end of the test chamber 11. The one-way flap 3 can cover and block the wire hole 12. The power cord can push the one-way flap 3 unidirectionally through the wire hole 12 to enter the inside of the test chamber 11. When the test chamber 11 explodes to generate high-pressure gas, the one-way flap 3 can block the wire hole 12 for protection.

[0028] like Figure 5-6 As shown, the pressure relief buffer unit includes a U-shaped buffer plate 41 installed in the test chamber 11, and a pressure relief hole 43 corresponding to the U-shaped buffer plate 41 is opened on the side wall between adjacent test chambers 11, and the rear side of the U-shaped buffer plate 41 is connected to the end of the test chamber 11 through a spring 42, and the U-shaped buffer plate 41 can cover and block the pressure relief hole 43 through the elastic push of the spring 42, and the U-shaped buffer plates 41 in adjacent test chambers 11 are staggered, and the pressure relief holes 43 are opened symmetrically on the left and right. On the side wall between adjacent test chambers 11, the U-shaped buffer plate 41 in the adjacent test chamber 11 can cover and seal the left pressure relief hole 43 and the right pressure relief hole 43 respectively; through the set U-shaped buffer plate 41 and the pressure relief hole 43, the test box 1 can effectively disperse and alleviate the high pressure generated by the explosion of the electronic cigarette. The U-shaped buffer plate 41 can be compressed and quickly open the pressure relief hole 43 under the impact of the explosion, so that the high-pressure gas is decompressed and diffused into the adjacent test chamber 11, avoiding the pressure concentration in one test chamber 11.

[0029] In the initial state, the test chamber 11 can be isolated by the U-shaped buffer plate 41, so that the test chamber 11 is an independent chamber, and adjacent test chambers 11 are not connected to each other. When an explosion occurs inside the test chamber 11, the high-pressure gas generated will impact the U-shaped buffer plate 41 to open the pressure relief hole 43. At this time, the adjacent test chambers 11 are in a connected state. Detection sensors, such as temperature sensors, pressure sensors, and odor sensors, can also be set in the test chamber 11 to detect the gas generated by the fire, combustion and explosion of the electronic cigarette.

[0030] like Figure 1 and Figure 7 As shown, the negative pressure buffer unit includes a bottom plate 51 arranged at the bottom of the test chamber 11, and edges are arranged on both sides of the bottom plate 51, and the U-shaped buffer plate 41 is located above the bottom plate 51, and a sealed cavity area 53 is formed between the bottom plate 51 and the bottom of the test chamber 11, and a supporting rib 54 is installed at the bottom of the test chamber 11, and the supporting rib 54 supports the bottom plate 51, and a brittle fracture portion 52 is opened on the bottom plate 51, and the supporting rib 54 corresponds to the brittle fracture portion 52 up and down. When the bottom plate 51 is impacted by the explosion, the brittle fracture portion 52 of the bottom plate 51 will impact the top of the supporting rib 54, so that the brittle fracture portion 52 of the bottom plate 51 will break; the sealed cavity area 53 in each test chamber 11 is connected to the negative pressure tank 56 through a negative pressure pipe 55, and a pressure tank 56 is provided with a negative pressure pipe 55. The force sensor and the pressure sensor are used to monitor the pressure inside the negative pressure tank 56. The pressure sensor is connected to the controller signal and is provided with a negative pressure member 57 for extracting pressure from the negative pressure tank 56. The negative pressure member 57 can adopt a negative pressure pump or a negative pressure fan to perform negative pressure suction on the negative pressure tank 56. When the electronic cigarette is placed in the test chamber 11 for charging test, the negative pressure member 57 can pre-adjust the sealed cavity area 53, the negative pressure tube 55 and the negative pressure tank 56 to a constant negative pressure state, ensuring that the high-pressure gas generated by the explosion can be quickly drawn into the negative pressure tank 56 by the negative pressure; after the inside of the negative pressure tank 56 is adjusted to a constant negative pressure state, the negative pressure member 57 stops working. As long as the pressure sensor detects that the pressure inside the negative pressure tank 56 becomes larger, the negative pressure member 57 will start negative pressure suction.

[0031] When the lithium battery in the electronic cigarette explodes, a large amount of air pressure will be generated in a short period of time, and the air pressure will expand and explode to produce high-pressure gas. When the electronic cigarette in the test chamber 11 explodes, it can be divided into two situations. The first is a mild or moderate non-destructive explosion. In a mild or moderate non-destructive explosion, the high-pressure gas generated by the explosion will only impact the U-shaped buffer plate 41, so that the U-shaped buffer plate 41 is pressurized to open the pressure relief hole 43, so that the high-pressure gas diffuses to the adjacent test chamber 11 to relieve pressure, and will not cause impact damage to the bottom plate 51. The U-shaped buffer plate 41 can also be reset; the second is a severe destructive explosion. In a severe destructive explosion, the high-pressure gas generated by the explosion will impact the U-shaped buffer plate 41 and the bottom plate 51 at the same time, and the bottom plate 51 will be broken and the high-pressure gas will be released into the negative pressure tube 55, and the bottom plate 51 can be replaced.

[0032] When conducting the explosion-proof test of electronic cigarette charging, the electronic cigarette first undergoes water spraying, overload and drop tests, and is then placed in the test chamber 11 for charging. At this time, the test box 1 is in a standby state, ready to withstand possible explosion shocks. When an explosion occurs due to battery failure or other factors during the test, the high-pressure gas generated will first open the U-shaped buffer plate 41 in the test chamber 11, and the high-pressure gas will diffuse to the adjacent test chambers 11 on both sides through the pressure relief holes 43; after diffusing to the adjacent chambers, the high-pressure gas will impact the U-shaped buffer plate 41 in the adjacent test chamber 11, open its pressure relief holes 43, and allow the gas to diffuse to its adjacent chambers again. This process is repeated continuously, and the high-pressure gas is gradually transferred to all test chambers 11, thereby increasing the overall space and reducing the pressure. This layer-by-layer diffusion mechanism effectively reduces the instantaneous pressure inside the test chamber 11, avoids the pressure being concentrated in one test chamber 11, and prevents a single test chamber 11 from being broken due to excessive pressure, thereby achieving effective pressure relief and buffering of the high-pressure gas generated by the explosion, and reducing the risk of equipment damage and safety hazards; In the event of a severe explosion in the electronic cigarette, the high-pressure gas generated by the explosion will also impact the bottom plate 51. The bottom plate 51 can be broken in a controlled manner through the brittle portion 52, causing the bottom plate 51 to be broken by the impact, and the high-pressure gas enters the sealed cavity area 53 through the brittle portion 52 and is guided into the negative pressure tube 55. Since the negative pressure tube 55 has maintained a constant negative pressure state in advance through the negative pressure piece 57, it can quickly inhale the high-pressure gas leaked from the test chamber 11. The function of the negative pressure tube 55 is to quickly guide the high-pressure gas generated by the explosion into the negative pressure tank 56, effectively reducing the residual pressure in the test chamber 11. That is to say, when an explosion occurs, the constant negative pressure in the negative pressure tank 56 and the negative pressure tube 55 can instantly pump out and reduce the pressure of the high-pressure gas generated by the explosion, thereby preventing the high-pressure gas generated during the explosion from impacting the cover plate 13, knocking the cover plate 13 off, and causing damage to the artificial The negative pressure tank 56 is a kind of high-pressure gas tank which is used to pump out high-pressure gas.

[0033] When an explosion occurs in the test chamber 11 and high-pressure gas is generated, the constant negative pressure maintained in the negative pressure tank 56 is used to quickly draw the high-pressure gas into the negative pressure tank 56 through the negative pressure pipe 55 at the first time, so that the high-pressure gas can be quickly collected and isolated to prevent pressure accumulation in the test chamber 11. Since the negative pressure member 57 cannot react quickly in a very short time, the constant negative pressure maintained in advance becomes the main pumping force in the initial stage, and then the high-pressure gas in the negative pressure tank 56 is further sucked and discharged through the negative pressure member 57.

[0034] The pressure relief buffer unit and the negative pressure buffer unit can prevent the test box 1 from exploding. The high-pressure gas generated by the explosion of the electronic cigarette is internally depressurized and reduced by the pressure relief buffer inside the test box 1 to avoid the explosion of the test box 1 itself.

[0035] Alternatively, the test chambers 11 on both sides of any test chamber 11 can be used as pressure relief chambers, and electronic cigarettes are no longer placed in the pressure relief chambers for charging testing. Electronic cigarettes are only placed in the test chambers 11 for charging testing, so that the pressure relief chambers cooperate with the test chambers 11 to relieve pressure.

[0036] Preferably, the locking of the cover plate 13 and the test chamber 11 is achieved by clamping the clamping lock. The shuttle clamp 25 of the cover plate 13 is inserted into the clamping lock and is clamped and locked. However, when the cover plate 13 is subjected to the impact force of the electronic cigarette explosion, the shuttle clamp 25 may be separated from the clamping lock, causing the cover plate 13 to open due to the impact. Therefore, a secondary locking protection component 6 for locking the locking component 2 can also be provided. Figure 9-10 As shown, the outer end of the rotating shaft 23 extends out of the lock seat 21 and is installed with a clamping tube 61. A T-shaped elastic pin 62 is sleeved in any clamping tube 61. A top spring 62 is installed between the T-shaped elastic pin 62 and the clamping tube 61. The torsion spring controls the swing rod 22 in the retracted state so that the adjacent clamping tubes 61 can be naturally kept in a horizontal corresponding state. When the adjacent clamping tubes 61 are horizontally corresponding, the T-shaped elastic can clamp and lock the adjacent clamping tubes 61. When the T-shaped elastic pin 62 is pulled out from the clamping tube 61, the swing rod 22 can be rotated in the lock seat 21 by the rotating shaft 23, so that the shuttle clamp head 25 can be locked by the clamping lock head. When the shuttle clamp head 25 is locked, the T-shaped elastic pin 62 can be inserted into the adjacent clamping tube 61 under the action of the top spring 62 to lock the rotating shaft 23. At this time, the shuttle clamp head 25 will be locked in the clamping lock head for the second time to prevent the shuttle clamp head 25 from detaching from the clamping lock head, causing the cover plate 13 to be opened by impact.

[0037] Embodiment 2, an electronic cigarette charging explosion-proof performance test box 1 in this embodiment is described centering on the differences from Embodiment 1.

[0038] In this embodiment, a matching wire groove is provided on the rear side of the one-way flip cover 3 , and the matching wire groove vertically and downwardly penetrates the one-way flip cover 3 , and the matching wire groove can guide the power cord out of the wire hole 12 .

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronic cigarette charging explosion-proof performance test box, characterized in that: It includes a test box, a pressure relief buffer unit and a negative pressure buffer unit. The test box includes a plurality of test chambers arranged in parallel. The test chambers are equipped with cover plates, and a one-way flip cover is arranged on the inner side of the wire hole at the end of the test chamber; the pressure relief buffer unit includes a U-shaped buffer plate arranged in the test chamber, and a pressure relief hole corresponding to the U-shaped buffer plate is opened on the side wall between adjacent test chambers. The U-shaped buffer plate is elastically connected to the test chamber so that the U-shaped buffer plate can cover and block the pressure relief hole, and the U-shaped buffer plates in adjacent test chambers are staggered, and the staggered U-shaped buffer plates are respectively blocked with the corresponding pressure relief holes; the negative pressure buffer unit includes a bottom plate arranged at the bottom of the test chamber, a sealed cavity area is formed between the bottom plate and the bottom of the test chamber, and the bottom plate is supported by the supporting ribs at the bottom of the test chamber, and a brittle fracture corresponding to the supporting ribs is opened on the bottom plate. The sealed cavity area is connected to the negative pressure tank through a negative pressure tube. A pressure sensor is arranged in the negative pressure tank, and a negative pressure piece is arranged for pumping pressure on the negative pressure tank, so that the sealed cavity area can be adjusted to a constant negative pressure state; when the U-shaped buffer plate in the test chamber is impacted by the high-pressure gas generated by the explosion, the pressure relief hole will be opened under pressure to diffuse the high-pressure gas to the adjacent test chambers on both sides. After the U-shaped buffer plates of the adjacent test chambers are impacted by the high-pressure gas, the internal pressure relief holes will be opened at the same time to diffuse the high-pressure gas to both sides, so as to relieve and buffer the high-pressure gas generated by the explosion; at the same time, the high-pressure gas generated by the explosion will break through the bottom plate and enter the negative pressure tube. The constant negative pressure maintained in the negative pressure tube can pump the high-pressure gas into the negative pressure tank. When the pressure sensor detects that the internal pressure of the negative pressure tank increases, the high-pressure gas is pumped out from the negative pressure tank through the negative pressure piece to perform pressure relief and buffering.

2. An electronic cigarette charging explosion-proof performance test box according to claim 1, characterized in that: The pressure relief holes are symmetrically opened on the side wall between adjacent test chambers, and the U-shaped buffer plates in the adjacent test chambers can cover and block the left pressure relief hole and the right pressure relief hole respectively.

3. The electronic cigarette charging explosion-proof performance test box according to claim 1, characterized in that: The rear side of the U-shaped buffer plate is connected to the end of the test chamber through a spring, and the U-shaped buffer plate covers and seals the pressure relief hole through the elastic pushing of the spring, and the U-shaped buffer plate is located above the bottom plate.

4. The electronic cigarette charging explosion-proof performance test box according to claim 1, characterized in that: The top of the one-way flap is hingedly mounted on the inner side of the end of the test chamber, and the one-way flap can cover and block the wire hole.

5. The electronic cigarette charging explosion-proof performance test box according to claim 1, characterized in that: A matching wire groove is provided on the rear side of the one-way flip cover, and the matching wire groove vertically and downwardly penetrates the one-way flip cover, and the matching wire groove can guide the power line out of the wire hole.

6. The electronic cigarette charging explosion-proof performance test box according to claim 1, characterized in that: The cover plate can be locked with the test chamber through a locking assembly. The locking assembly includes a lock seat arranged at the end of the test chamber. A rocker arm is symmetrically arranged on the lock seat. The rocker arm is rotatably installed on the lock seat through a rotating shaft rod. A torsion spring is arranged between the rotating shaft rod and the lock seat. A clamping wheel is installed at the free end of the rocker arm. The torsion spring controls the rocker arm to contract inward so that adjacent clamping wheels form a clamping lock head, and a shuttle-shaped clamping head is installed on the cover plate.

7. The electronic cigarette charging explosion-proof performance test box according to claim 1, characterized in that: Edges are arranged on both sides of the bottom plate.

8. The electronic cigarette charging explosion-proof performance test box according to claim 1, characterized in that: It also includes a secondary locking protection component arranged on the locking component, which is used for performing secondary locking on the locking component.

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