Leakage-proof electronic cigarette

Abstract

The utility model relates to a liquid leakage prevention electronic cigarette which comprises a cigarette cartridge, the cigarette cartridge comprises an oil cup and an atomization assembly, the oil cup is provided with an atomization cover communicated with a suction nozzle and an atomization cavity in the center of an oil cavity, the bottom of the oil cavity is provided with a liquid inlet groove in the outer circumferential direction of the atomization cover, and the inner side wall of the liquid inlet groove is concavely provided with a plurality of capillary grooves. A liquid inlet hole leading to the atomization cavity is formed in the position, close to the liquid inlet groove, of the atomization cover, the atomization assembly is arranged in the atomization cavity, tobacco tar in the tar cavity penetrates into tar guide cotton of the atomization assembly sequentially through the liquid inlet groove and the liquid inlet hole, and capillary action is generated between the tobacco tar between the liquid inlet groove and the atomization cover and the capillary groove. Therefore, a liquid locking structure between the oil cavity and the atomization cavity is formed. The annular liquid inlet groove is formed between the oil cavity and the atomization cover, the liquid inlet groove has a large contact area with the tobacco tar through the capillary groove, the adhesive force of the liquid inlet groove to the tobacco tar is increased, and therefore it is guaranteed that the attraction force of the liquid inlet groove to the tobacco tar is large, and a liquid locking structure between the oil cavity and the atomization cavity is formed.

Description

Technical Field

[0001] This utility model relates to the field of electronic atomizer technology, and in particular to a leak-proof electronic cigarette. Background Technology

[0002] Electronic cigarettes heat e-liquid and atomize it into vapor for inhalation using an atomizing coil. The e-liquid is stored in the e-liquid chamber of the e-cigarette cup. During use, to continuously supply e-liquid for heating and atomization, the e-liquid needs to permeate through pores into the wicking material within the atomizing chamber. Changes in air pressure within the e-liquid chamber and in the external air pressure can affect this permeation process, leading to leakage. Common types of leakage in e-cigarettes include transportation leakage, storage leakage, vaping leakage, and storage leakage. From production to sales, plugs are used to seal the air intake and mouthpiece, isolating the e-liquid and atomizing chamber from the external environment, thus preventing leakage before the e-cigarette is sold. While leakage is a common issue with e-cigarettes, it still exists during user experience. For example: 1. During air travel, opened e-cigarettes may leak due to pressure changes during the flight; 2. When left in a car, the high temperature inside the car heats the e-cigarette, increasing the pressure inside the e-liquid chamber and causing leakage; 3. When placed on a table or other object at room temperature, condensation accumulated in the atomizing chamber can seep out through the gaps; 4. During inhalation, excessive suction can cause a large pressure difference between the atomizing chamber and the e-liquid chamber, squeezing out e-liquid exceeding the capacity of the wicking material, leading to leakage.

[0003] Therefore, it is necessary to optimize the structure of existing e-cigarettes to prevent leakage during use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a leak-proof electronic cigarette.

[0005] This utility model provides a leak-proof electronic cigarette, including a cartridge. The cartridge includes an oil cup and an atomizing component. The oil cup has an atomizing cover at the center of the oil cavity, connecting the mouthpiece and the atomizing cavity. The bottom of the oil cavity has a liquid inlet groove on the outer circumference of the atomizing cover. The inner sidewall of the liquid inlet groove is recessed with multiple capillary grooves. The atomizing cover has a liquid inlet hole near the liquid inlet groove, leading to the atomizing cavity. The atomizing component is disposed inside the atomizing cavity. The e-liquid in the oil cavity permeates into the oil-guiding cotton of the atomizing component through the liquid inlet groove and the liquid inlet hole in sequence. Capillary action is generated between the e-liquid and the capillary grooves between the liquid inlet groove and the atomizing cover to form a liquid-locking structure between the oil cavity and the atomizing cavity.

[0006] In some embodiments, a support is provided inside the oil cup, and an oil-sealing silicone is provided between the support, the inner wall of the oil cup, and the atomizing cover. An oil cavity is formed between the oil-sealing silicone, the atomizing cover, and the inner wall of the oil cup. The oil-sealing silicone is located at the bottom of the oil cavity. An oil guide ring is integrally formed on the oil-sealing silicone. The oil guide ring is sleeved on the atomizing cover, and the liquid inlet groove is provided between the inner wall of the oil guide ring and the outer wall of the atomizing cover.

[0007] In some embodiments, the sealing silicone has a sealing ring concentrically arranged on the side of the oil guide ring away from the oil cavity. The sealing ring is sleeved on the atomizing cover. The liquid inlet groove opens to the oil cavity on the side facing the nozzle, and the opposite side is sealed to the atomizing cover through the sealing ring. The inner wall of the sealing ring has a sealing ridge protruding, and the sealing ring is interference-fitted with the atomizing cover through the sealing ridge.

[0008] In some embodiments, the sealing silicone is provided with a conical surface inclined toward the oil guide ring to guide the e-liquid in the oil cavity to flow to the oil guide ring. The oil guide ring is higher than the conical surface, and the oil guide ring is provided with an oil guide groove that runs radially through it. The oil guide groove connects the oil cavity and the liquid inlet groove along the conical surface.

[0009] In some embodiments, the inner sidewall of the oil guide ring is provided with a plurality of capillary grooves at equal intervals. The bottom of the capillary groove is divided into a first slope and a second slope. The first slope and the second slope form a V-shaped bottom of the capillary groove. The first slope is parallel to the outer sidewall of the atomizing hood in the liquid inlet groove, and the second slope is inclined towards the liquid inlet hole.

[0010] In some embodiments, the support includes a first support and a second support. The first support is connected to an oil-sealing silicone sealant. The first and second supports are fixed by a first snap-fit. The second support is fixed to the inner wall of the oil cup by a second snap-fit. An atomizing chamber is formed between the first support and the atomizing cover. An air inlet is provided on the second support. The mouthpiece, the atomizing chamber, and the air inlet are connected by an air passage. The mouthpiece is provided with a removable first silicone plug. The air inlet is provided with a removable second silicone plug. Oil-absorbing cotton is provided between the first and second supports.

[0011] In some embodiments, the atomizing assembly includes an oil-guiding cotton and an atomizing core. The oil-guiding cotton is sleeved on the atomizing core, and the atomizing core is electrically connected to an electrode. The electrode is fixed on a second bracket and extends into a first bracket, with a contact surface exposed on the end face of the second bracket.

[0012] In some embodiments, an oil injection hole is provided at the bottom of the oil chamber, and a silicone plug is provided inside the oil injection hole.

[0013] In some embodiments, the device also includes a main unit, which has a slot for connecting to the cartridge. The bottom of the slot has a spring pin that matches the electrode. The contact of the spring pin is in contact with the electrode's contact surface. Two pairs of magnets are provided between the bottom of the slot and the second bracket. The cartridge is magnetically positioned in the slot by the two pairs of magnets.

[0014] In some embodiments, a support is provided inside the oil cup, and an oil-sealing silicone sealant is provided between the support, the inner wall of the oil cup, and the atomizing cover. An oil cavity is formed between the support, the oil-sealing silicone sealant, the atomizing cover, and the inner wall of the oil cup. An oil guide ring is integrally formed on the support and is sleeved on the atomizing cover. The liquid inlet groove is provided between the inner wall of the oil guide ring and the outer wall of the atomizing cover.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting an annular liquid inlet groove between the oil cavity and the atomizing cover, the liquid inlet groove has a larger contact area with the e-liquid through the capillary groove, which increases the adhesion of the liquid inlet groove to the e-liquid, so that the e-liquid generates a capillary phenomenon between the liquid inlet groove and the outer wall of the atomizing cover, thereby ensuring that the liquid inlet groove has a greater attraction to the e-liquid, so as to overcome the force of the air pressure change inside and outside the oil cavity on the e-liquid, and thus forming a liquid-locking structure between the oil cavity and the atomizing cavity. Attached Figure Description

[0016] Figure 1 This is an exploded structural diagram of the leak-proof electronic cigarette according to an embodiment of this application.

[0017] Figure 2 This is one of the schematic diagrams of the cross-sectional structure of the e-cigarette cartridge in the embodiments of this application.

[0018] Figure 3 This is the second schematic diagram of the cross-sectional structure of the cigarette cartridge in this application.

[0019] Figure 4 This is a three-dimensional structural diagram of the sealing silicone according to an embodiment of this application.

[0020] Figure 5 This is a three-dimensional structural diagram of the liquid-locking structure in an embodiment of this application.

[0021] Figure 6 This is a three-dimensional structural diagram of the leak-proof electronic cigarette according to an embodiment of this application.

[0022] Figure 7 This is a three-dimensional structural diagram of the host computer according to an embodiment of this application.

[0023] Attached label: 1. Cartridge; 11. Atomizing chamber; 12. Airway;

[0024] 2. Oil cup; 21. Oil chamber; 22. Suction nozzle; 23. First silicone stopper;

[0025] 3. Atomizing hood; 31. Liquid inlet; 32. First sealing ring;

[0026] 4. Oil guide ring; 41. Liquid inlet groove; 42. Capillary groove; 43. First slope; 44. Second slope; 45. Oil guide groove;

[0027] 5. Sealing silicone sealant; 51. Sealing ring; 52. Sealing ridge; 53. Conical surface; 54. Oil injection hole;

[0028] 6. Atomizing component; 61. Atomizing core; 62. Oil-wicking cotton; 63. Electrode; 64. Contact surface;

[0029] 7. Bracket; 71. First bracket; 72. Second bracket; 73. First clip; 74. Second clip; 75. Oil injection pipe; 76. Silicone plug; 77. Second sealing ring; 78. Air inlet; 79. Second silicone plug;

[0030] 8. Oil-absorbing cotton;

[0031] 9. Main unit; 91. Card slot; 92. Spring pin; 93. Magnet. Detailed Implementation

[0032] The specific embodiments of this utility model are described with reference to the accompanying drawings.

[0033] refer to Figure 1 The figure shows a three-dimensional structural diagram of a leak-proof electronic cigarette. The atomizing component 6 inside the cartridge 1 uses a cylindrical ceramic atomizing core 61. The atomized smoke produced by the ceramic atomizing core 61 is relatively fine. The ceramic atomizing core 61 is fitted with an oil-guiding cotton 62 to receive the e-liquid that seeps into the oil chamber 21.

[0034] refer to Figures 1 to 7 A leak-proof electronic cigarette includes a cartridge 1 and a main unit 9. The cartridge 1 includes an oil cup 2 and an atomizing component 6. The oil cup 2 has an atomizing cover 3 at the center of the oil cavity 21, which connects the mouthpiece 22 and the atomizing cavity 11. The bottom of the oil cavity 21 has a liquid inlet groove 41 on the outer circumference of the atomizing cover 3. The inner side wall of the liquid inlet groove 41 is recessed with multiple capillary grooves 42. The atomizing cover 3 has a liquid inlet hole 31 near the liquid inlet groove 41 leading to the atomizing cavity 11. The atomizing component 6 is disposed in the atomizing cavity 11. The e-liquid in the oil cavity 21 permeates into the oil-guiding cotton 62 of the atomizing component 6 through the liquid inlet groove 41 and the liquid inlet hole 31. The e-liquid between the liquid inlet groove 41 and the atomizing cover 3 and the capillary grooves 42 generate capillary action to form a liquid-locking structure between the oil cavity 21 and the atomizing cavity 11.

[0035] The leak-proof electronic cigarette of this application has an annular liquid inlet groove 41 between the oil cavity 21 and the atomizing cover 3. The liquid inlet groove 41 has a large contact area with the e-liquid through the capillary groove 42, which increases the adhesion of the liquid inlet groove 41 to the e-liquid. This causes the e-liquid to generate a capillary phenomenon between the liquid inlet groove 41 and the outer wall of the atomizing cover 3, thereby ensuring that the liquid inlet groove 41 has a large attraction for the e-liquid, so as to overcome the force of the air pressure change inside and outside the oil cavity 21 on the e-liquid, and form a liquid-locking structure between the oil cavity 21 and the atomizing cavity 11.

[0036] In order to set up the liquid inlet tank 41, in this embodiment, refer to Figures 1 to 5 An oil cup 2 is provided with a support 7 inside. An oil sealing silicone 5 is provided between the support 7, the inner wall of the oil cup 2, and the atomizing cover 3. An oil cavity 21 is formed between the oil sealing silicone 5, the atomizing cover 3, and the inner wall of the oil cup 2. The oil sealing silicone 5 is located at the bottom of the oil cavity 21. An oil guide ring 4 is integrally formed on the oil sealing silicone 5. The oil guide ring 4 is sleeved on the atomizing cover 3. The liquid inlet groove 41 is provided between the inner wall of the oil guide ring 4 and the outer wall of the atomizing cover 3.

[0037] Understandably, with this setup, the sealing silicone 5 can effectively seal the connection between the bracket 7, oil cup 2, and atomizing cover 3, ensuring the sealing of the oil cavity 21. Through the integrally formed oil guide ring 4 on the sealing silicone 5, an inlet groove 41 is formed between the oil guide ring 4 and the atomizing cover 3.

[0038] In another embodiment, besides forming the oil guide ring 4 on the sealing silicone 5, the oil guide ring 4 can also be formed on the bracket 7 (not shown in the attached drawings). That is, the oil guide ring 4 is structurally formed on the bracket 7. Whether the oil guide ring 4 is formed on the sealing silicone 5 or on the bracket 7, both methods are for guiding the e-liquid in the oil cavity 21 to the atomizer 3 and forming an oil-locking structure. The bracket 7 is provided inside the oil cup 2. The sealing silicone 5 is provided between the bracket 7, the inner wall of the oil cup 2, and the atomizer 3. The oil cavity 21 is formed between the bracket 7, the sealing silicone 5, the atomizer 3, and the inner wall of the oil cup 2. The bracket 7 is integrally formed with the oil guide ring 4, which is sleeved on the atomizer 3. The liquid inlet groove 41 is provided between the inner wall of the oil guide ring 4 and the outer wall of the atomizer 3. The end face of the bracket 7 serves as the bottom of the oil cavity 21. An oil guide ring 4 is formed on the bracket 7, thereby forming an inlet groove 41 between the oil guide ring 4 and the outer wall of the atomizing cover 3. Of course, in order to ensure the sealing of the oil cavity 21, the bracket 7 and the inner wall of the atomizing cover 3 and the oil cup 2 are sealed with sealing silicone 5, but the sealing silicone 5 lacks the oil guide ring 4.

[0039] In order to seal the oil cavity 21, in this embodiment, reference is made to... Figures 2 to 5The sealing silicone 5 has a sealing ring 51 concentrically arranged on the side of the oil guide ring 4 away from the oil cavity 21. The sealing ring 51 is sleeved on the atomizing cover 3. The liquid inlet groove 41 is open on the side facing the nozzle 22 and communicates with the oil cavity 21. The opposite side is sealed with the atomizing cover 3 through the sealing ring 51. The inner wall of the sealing ring 51 is provided with a sealing ridge 52. The sealing ring 51 is press-fitted with the atomizing cover 3 through the sealing ridge 52.

[0040] Understandably, with this setup, the e-liquid in the oil cavity 21 enters the inlet groove 41 through the opening. To ensure that the e-liquid only permeates into the wicking cotton 62 through the inlet hole 31 of the atomizer 3, the connection between the atomizer 3 and the wicking ring 4 needs to be sealed. The wicking ring 4 and the sealing ring 51 are fitted together on the atomizer 3. The gap between the wicking ring 4 and the outer wall of the atomizer 3 forms the inlet groove 41. The inlet hole 31 communicates with the inlet groove 41. The sealing ring 51 is tightly bonded to the outer wall of the atomizer 3 through elasticity. The gap between the sealing ring 51 and the atomizer 3 is sealed by the sealing protrusion 52, thereby ensuring that the e-liquid in the oil cavity 21 only permeates into the wicking cotton 62 through the inlet groove 41 and the inlet hole 31.

[0041] In order to guide the e-liquid flow to the inlet tank 41, in this embodiment, reference is made to Figures 2 to 5 The sealing silicone 5 is provided with a conical surface 53 inclined towards the oil guide ring 4 to guide the e-liquid in the oil cavity 21 to flow to the oil guide ring 4. The oil guide ring 4 is higher than the conical surface 53. The oil guide ring 4 is provided with an oil guide groove 45 in the radial direction. The oil guide groove 45 connects the oil cavity 21 and the liquid inlet groove 41 along the conical surface 53.

[0042] Understandably, with this configuration, the oil guide ring 4 is higher than the inclined conical surface 53. When there is only a little e-liquid left in the oil chamber 21, the e-liquid will enter the liquid inlet 41 through the oil guide groove 45, thus avoiding waste of e-liquid.

[0043] To increase the area of ​​the capillary groove 42, in this embodiment, reference is made to... Figures 2 to 5 Multiple capillary grooves 42 are evenly spaced on the inner sidewall of the oil guide ring 4. The bottom of the capillary groove 42 is divided into a first slope 43 and a second slope 44. The first slope 43 and the second slope 44 form a V-shaped bottom of the capillary groove 42. The first slope 43 is parallel to the outer sidewall of the atomizing hood 3 in the liquid inlet groove 41 part, and the second slope 44 is inclined towards the liquid inlet hole 31.

[0044] Understandably, with the V-shaped bottom of the capillary groove 42 positioned away from the atomizer 3, this increases the space of the liquid inlet groove 41, allowing it to hold more e-liquid. At the same time, the V-shaped bottom increases the area of ​​the capillary groove 42 bottom, increasing the contact area between the capillary groove 42 and the e-liquid, thus increasing the attraction of the capillary groove 42 to the e-liquid.

[0045] For ease of assembly, in this embodiment, reference is made to... Figures 1 to 5 The bracket 7 includes a first bracket 71 and a second bracket 72. The first bracket 71 is connected to the sealing silicone 5. The first bracket 71 and the second bracket 72 are fixed by a first buckle 73. The second bracket 72 is fixed by a second buckle 74 to the inner wall of the oil cup 2. An atomizing chamber 11 is formed between the first bracket 71 and the atomizing cover 3. The second bracket 72 is provided with an air inlet 78. The mouthpiece 22, the atomizing chamber 11 and the air inlet 78 are connected by an air passage 12. The mouthpiece 22 is provided with a removable first silicone plug 23. The air inlet 78 is provided with a removable second silicone plug 79. An oil-absorbing cotton 8 is provided between the first bracket 71 and the second bracket 72.

[0046] It should be further explained that there are two oil-absorbing cotton 8s, one on one side of the first support 71 and one on the other side of the second support 72. The e-liquid droplets condensed in the atomizing chamber 11 are absorbed by the two oil-absorbing cotton 8s, preventing them from flowing out of the air inlet 78 and mouthpiece 22 into the outside of the e-cigarette, and preventing the problem of e-liquid leakage from the atomizing chamber 11 when the e-cigarette is placed aside.

[0047] Understandably, this design divides the bracket 7 into a first bracket 71 and a second bracket 72. After separate processing, they are snapped together by the first buckle 73, allowing two oil-absorbing cotton 8s to be sandwiched between the first bracket 71 and the second bracket 72. This facilitates the molding of the air inlet 78 on the second bracket 72, reducing the difficulty of injection molding the bracket 7. The first silicone plug 23 and the second silicone plug 79 isolate the air passage 12 of the e-cigarette cartridge 1 from the outside world, ensuring that the e-cigarette will not leak during transportation, storage, and placement before use.

[0048] To achieve atomization, in this embodiment, reference is made... Figure 1 The atomizing component 6 includes an oil-guiding cotton 62 and an atomizing core 61. The oil-guiding cotton 62 is sleeved on the atomizing core 61. The atomizing core 61 is electrically connected to an electrode 63. The electrode 63 is fixed on the second bracket 72 and extends towards the first bracket 71. The electrode 63 has a contact surface 64 exposed on the end face of the second bracket 72.

[0049] It should be further explained that two O-rings 32 are provided between the atomizing chamber 11 and the air passage 12 on the side of the nozzle 22 to ensure the sealing of the oil chamber 21. A C-shaped second sealing ring 77 is provided between the second bracket 72 and the inner wall of the oil cup 2 to ensure the airtightness of the atomizing chamber 11 and the air passage 12.

[0050] Understandably, with this setup, the atomizer core 61 is a ceramic atomizer core 61, the wicking cotton 62 absorbs the e-liquid that seeps in from the liquid inlet 31, and the wicking cotton 62 carries the e-liquid through internal capillary action. The atomizer core 61 is electrically connected to the battery of the main unit 9 through two electrodes 63. After being powered on and heated, the e-liquid on the wicking cotton 62 is heated and atomized.

[0051] In order to add e-liquid into the oil chamber 21, in this embodiment, reference is made to... Figure 3 and Figure 5 The bottom of the oil cavity 21 is provided with an oil injection hole 54, and a silicone plug 76 is provided inside the oil injection hole 54.

[0052] Understandably, with this setup, the second bracket 72 extends the oil filling tube 75 into the oil cavity 21. The oil filling tube 75 passes through the oil filling hole 54 of the sealing silicone 5. The silicone plug 76 is inserted into the oil filling tube 75 and extends into the oil filling hole 54. When the atomizing component 6, atomizing cover 3, sealing silicone 5, oil-absorbing cotton 8, and electrode 63 are all installed in the oil cup 2, e-liquid is added to the oil cavity 21 through the oil filling tube 75 and the oil filling hole 54. After the e-liquid is added, the silicone plug 76 is inserted into the oil filling tube 75 and the oil filling hole 54 to seal the oil cavity 21. Then, the second bracket 72 fixes the magnet 93 at the outer opening of the oil filling tube 75. The magnet 93 is located outside the silicone plug 76, and the magnet 93 is press-fitted with the inner wall of the oil filling tube 75, thereby stably fixing the silicone plug 76 inside the oil filling tube 75 and ensuring the sealing of the oil cavity 21.

[0053] In order to power the atomizing component 6, in this embodiment, refer to Figure 6 and Figure 7 The main unit 9 is provided with a slot 91 for connecting the cartridge 1. The bottom of the slot 91 is provided with a spring pin 92 that matches the electrode 63. The contact of the spring pin 92 is in contact with the contact surface 64 of the electrode 63 and conducts electricity. Two pairs of magnets 93 are provided between the bottom of the slot 91 and the second bracket 72. The cartridge 1 is magnetically positioned in the slot 91 by the two pairs of magnets 93.

[0054] Understandably, with this setup, the shape of the slot 91 matches the lower part of the cartridge 1, the lower part of the cartridge 1 is inserted into the slot 91 and fixed by two pairs of magnets 93, the mouthpiece 22 of the cartridge 1 is exposed outside the main unit 9, and the spring pin 92 of the main unit contacts the electrode 63 to conduct electricity, providing power to the atomizing core 61.

[0055] The leak-proof electronic cigarette of this embodiment consists of a cartridge 1 and a main unit 9. The cartridge 1 stores e-liquid in its oil chamber 21. The main unit 9 supplies power to the cartridge 1. When using the electronic cigarette, the first silicone plug 23 and the second silicone plug 79 at the mouthpiece 22 and air inlet 78 of the cartridge 1 are removed. The cartridge 1 and the main unit are then magnetically secured. When the user inhales through the mouthpiece 22, the atomizing core 61 is powered on and heats up, atomizing the e-liquid on the oil-guiding cotton 62 in the atomizing chamber 11 into vapor. The vapor enters the user's mouth through the mouthpiece 22 along with the airflow from the air passage 12, completing the inhalation of the electronic cigarette. The e-liquid is in contact with the e-liquid through the liquid inlet 41 between the oil chamber 21 and the atomizing cover 3 via the capillary groove 42. The increased surface area enhances the adhesion of the e-liquid to the inlet tank 41, causing capillary action between the e-liquid and the outer wall of the atomizing cover 3. This ensures a strong attraction of the e-liquid to the inlet tank 41, overcoming the pressure changes inside and outside the e-liquid in the oil chamber 21. This creates a liquid-locking structure between the oil chamber 21 and the atomizing chamber 11. As the e-liquid in the e-cigarette gradually decreases to 1 / 2, 1 / 3, 1 / 4, and 1 / 5 of its volume during continuous use, the oil chamber 21 and the atomizing chamber 11 remain closed, ensuring no gaps between them. This prevents leakage due to pressure changes inside and outside the oil chamber 21 during transportation, storage, placement, and vaping of the e-cigarette.

[0056] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A leak-proof electronic cigarette, characterized in that, The device includes a cartridge containing an oil cup and an atomizing assembly. The oil cup has an atomizing cover at the center of its oil cavity, connecting the mouthpiece and the atomizing cavity. The bottom of the oil cavity has a liquid inlet groove on the outer circumference of the atomizing cover. The inner wall of the liquid inlet groove is recessed with multiple capillary grooves. The atomizing cover has a liquid inlet hole near the liquid inlet groove, leading to the atomizing cavity. The atomizing assembly is disposed inside the atomizing cavity. The e-liquid in the oil cavity permeates into the oil-guiding cotton of the atomizing assembly through the liquid inlet groove and the liquid inlet hole. Capillary action occurs between the e-liquid and the capillary grooves between the liquid inlet groove and the atomizing cover, forming a liquid-locking structure between the oil cavity and the atomizing cavity.

2. The leak-proof electronic cigarette according to claim 1, characterized in that, The oil cup is equipped with a support, and a sealing silicone is provided between the support, the inner wall of the oil cup, and the atomizing cover. An oil cavity is formed between the sealing silicone, the atomizing cover, and the inner wall of the oil cup. The sealing silicone is located at the bottom of the oil cavity. An oil guide ring is integrally formed on the sealing silicone. The oil guide ring is sleeved on the atomizing cover. The liquid inlet groove is located between the inner wall of the oil guide ring and the outer wall of the atomizing cover.

3. The leak-proof electronic cigarette according to claim 2, characterized in that, The sealing silicone has a sealing ring concentrically arranged on the side of the oil guide ring away from the oil cavity. The sealing ring is sleeved on the atomizing cover. The liquid inlet groove has an opening on the side facing the nozzle that communicates with the oil cavity, and the opposite side is sealed to the atomizing cover through the sealing ring. The inner wall of the sealing ring has a sealing protrusion, and the sealing ring is interference-fitted with the atomizing cover through the sealing protrusion.

4. The leak-proof electronic cigarette according to claim 2, characterized in that, The sealing silicone is provided with a conical surface inclined toward the oil guide ring to guide the e-liquid in the oil cavity to flow to the oil guide ring. The oil guide ring is higher than the conical surface. The oil guide ring is provided with an oil guide groove in the radial direction. The oil guide groove connects the oil cavity and the liquid inlet groove along the conical surface.

5. The leak-proof electronic cigarette according to claim 2, characterized in that, The inner sidewall of the oil guide ring is provided with multiple capillary grooves at equal intervals. The bottom of the capillary groove is divided into a first slope and a second slope. The first slope and the second slope form a V-shaped bottom of the capillary groove. The first slope is parallel to the outer sidewall of the atomizing hood in the liquid inlet groove. The second slope is inclined towards the liquid inlet hole.

6. The leak-proof electronic cigarette according to claim 2, characterized in that, The support includes a first support and a second support. The first support is connected to the sealing silicone. The first support and the second support are fixed by a first snap fastener. The second support is fixed to the inner wall of the oil cup by a second snap fastener. An atomizing chamber is formed between the first support and the atomizing cover. An air inlet is provided on the second support. The mouthpiece, the atomizing chamber and the air inlet are connected by an air passage. The mouthpiece is provided with a removable first silicone plug. The air inlet is provided with a removable second silicone plug. Oil-absorbing cotton is provided between the first support and the second support.

7. The leak-proof electronic cigarette according to claim 6, characterized in that, The atomizing component includes an oil-guiding cotton and an atomizing core. The oil-guiding cotton is sleeved on the atomizing core. The atomizing core is electrically connected to an electrode. The electrode is fixed on a second bracket and extends into a first bracket. The electrode has a contact surface exposed on the end face of the second bracket.

8. The leak-proof electronic cigarette according to claim 7, characterized in that, An oil injection hole is provided at the bottom of the oil chamber, and a silicone plug is provided inside the oil injection hole.

9. The leak-proof electronic cigarette according to claim 7, characterized in that, It also includes a main unit, which is provided with a slot for connecting the tobacco cartridge. The bottom of the slot is provided with a spring pin that matches the electrode. The contact point of the spring pin is in contact with the electrode's contact surface and conducts electricity. Two pairs of magnets are provided between the bottom of the slot and the second bracket. The tobacco cartridge is magnetically positioned in the slot by the two pairs of magnets.

10. The leak-proof electronic cigarette according to claim 1, characterized in that, The oil cup is equipped with a support, and a sealing silicone is provided between the support, the inner wall of the oil cup, and the atomizing cover. An oil cavity is formed between the support, the sealing silicone, the atomizing cover, and the inner wall of the oil cup. The support is integrally formed with an oil guide ring, which is sleeved on the atomizing cover. The liquid inlet groove is located between the inner wall of the oil guide ring and the outer wall of the atomizing cover.

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