Electronic cigarette cartridge with self-suction type oil injection cover

Abstract

The electronic cigarette cartridge comprises a cartridge shell, an atomizing core, a silica gel base and a bottom cover, an oil filling opening is formed in the side wall of the cartridge shell, the oil filling cover is arranged at the oil filling opening, the oil filling cover comprises a sealing plug body and a cover plate, the sealing plug body and the cover plate are integrally formed, and the atomizing core is arranged on the silica gel base. A first magnet set is arranged on the symmetrical outer side of the oil injection opening, the oil injection cover covers the oil injection opening, a second magnet set is arranged on the cover plate corresponding to the first magnet set, and the first magnet set and the second magnet set attract each other in a heteropole mode. The atomizing core comprises an outer pipe body, a first oil guide cotton pipe arranged in the outer pipe body in a sleeved mode, an inner pipe body arranged in the first oil guide cotton pipe in a sleeved mode, a second oil guide cotton pipe arranged in the inner pipe body in a sleeved mode and a heating wire arranged in the second oil guide cotton pipe in a sleeved mode, and oil guide through holes are formed in the side wall of the outer pipe body and the side wall of the inner pipe body. Through the magnetic type oil injection cover, the oil injection cover can be conveniently connected with the oil injection port, and insertion and extraction are not laborious. In addition, the atomization core with the double oil guide cotton pipes, the outer pipe body and the inner pipe body is beneficial for preventing oil leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic cigarettes, and in particular to an electronic cigarette cartridge provided with a self-priming oil filling cap. Background Art

[0002] Electronic cigarettes mainly include two types: oil storage cotton type oil tank integrated electronic cigarettes and cartridge oil tank electronic cigarettes. For cartridge oil tank electronic cigarettes, the oil in the cartridge is usually not refillable. After the oil in the cartridge is consumed, the cartridge is recycled as a waste. For this reason, this type of cartridge is a consumable, which is easy to cause waste of material resources. The technicians in this field have developed and improved the design of setting the oil filling port and the oil filling cover. By opening the oil filling cover, the oil filling port can be filled with oil to replenish the oil, so that the cartridge can be used for a longer time and reduce the consumption of resources. The existing refillable cartridge electronic cigarette cartridge has an oil filling cover that is designed with a convex ring sealing ring and is an integrated injection-molded silicone cover, which is difficult to insert or pull out from the oil filling port. In addition, the structure of the atomization core of the existing electronic cigarette cartridge is to design a stainless steel tube body, the side wall of the stainless steel tube body is provided with an oil guide through hole, the inner wall of the stainless steel tube body is provided with an oil guide cotton tube, and a mesh-shaped cylindrical heating wire is provided in the oil guide cotton tube, which is easy to cause the problem of oil leakage in the atomization core. Only by ensuring the quality of the atomizer core at the same time can the cartridge be refilled with oil after consumption, so as to extend the use of the cartridge and achieve the purpose of economy and saving resource waste. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model proposes an electronic cigarette cartridge provided with a self-priming oil filling cap, so as to solve the problems that the oil filling cap of the existing electronic cigarette cartridge is difficult to insert and remove and the atomizing core is easy to leak oil.

[0004] The technical solution disclosed in the utility model is an electronic cigarette cartridge with a self-priming oil filling cap, including a cartridge shell, an atomizer core, a silicone base, and a bottom cover. The cartridge shell is hollow and has an opening at the lower end. The upper end of the cartridge shell is provided with a suction nozzle. The silicone base is provided with a through-hole plug-in position. The lower end of the atomizer core is plugged into the through-hole plug-in position. The upper end of the atomizer core is connected to the inner lower end of the suction nozzle. The silicone base and the bottom cover are sleeved at the lower end opening of the cartridge shell. The bottom cover is snap-connected with the cartridge shell, and the bottom cover is provided with an air inlet. The side wall of the cartridge shell is provided with an oil filling port, and the oil filling port is provided with an oil filling cap. The oil filling cap includes a sealing plug body and a cover plate integrally formed with the sealing plug body. A first magnet group is provided at a symmetrical outer position of the oil filling port, and the oil filling cap covers the oil filling port. A second magnet group is provided at a position of the cover plate corresponding to the first magnet group. The first magnet group and the second magnet group attract each other with opposite poles to realize the adsorption of the oil filling cap at the oil filling port.

[0005] The atomization core includes an outer tube body, a first oil guiding cotton tube sleeved inside the outer tube body, an inner tube body sleeved inside the first oil guiding cotton tube, a second oil guiding cotton tube sleeved inside the inner tube body, and a heating wire sleeved inside the second oil guiding cotton tube. Oil guiding through holes are provided on the side walls of the outer tube body and the inner tube body.

[0006] Furthermore, the first magnet group includes at least two magnets, and the number of magnets in the second magnet group is the same as that in the first magnet group.

[0007] Furthermore, a recess for embedding the cover plate is provided around the oil injection port of the cartridge housing. The sealing plug body and the cover plate are integrally formed of food-grade silica gel. A groove is provided along the inside of the front end of the sealing plug body, and the side wall of the front end of the sealing plug body is provided with an inclined edge. The outer wall of the sealing plug body at the rear of the inclined edge is an outward-expanded inclined surface, and the outward-expanded inclined surface seals with the oil injection port.

[0008] Furthermore, a concave ring position is provided on the outer wall of the upper end of the outer tube body, and a silica gel sealing ring is sleeved inside the concave ring position.

[0009] Furthermore, the outer tube body and the inner tube body are made of food-grade stainless steel materials. The outer wall of the lower end of the inner tube body is provided with a first-level step and a second-level step around its circumference. The bottom wall of the first-level step abuts against the lower end of the outer tube body, the side wall of the first step is tightly fitted with the inner wall of the outer tube body, the side wall of the second step forms a gap for installing the first oil guiding cotton tube with the inner wall of the outer tube body, and the lower end of the first oil guiding cotton tube abuts against the bottom wall of the second step.

[0010] Furthermore, a convex ring portion integrally formed with the inner tube body is provided on the inner wall of the inner tube body corresponding to the position of the second step. The top surface of the convex ring portion and the inner wall of the inner tube body form an assembly position for sleeving the second oil guiding cotton tube.

[0011] Furthermore, a groove ring portion is provided on the inner wall of the inner tube body of the inner tube body corresponding to the position below the convex ring portion. The upper end of the through-hole insertion position of the silica gel base is provided with an inverted hook-shaped outer edge, and the inverted hook-shaped outer edge is clamped with the groove ring portion.

[0012] The beneficial effects of the present utility model are as follows: The refillable e-cigarette cartridge designed by this technical solution mainly has a magnetically-attached oil filling cap. The oil filling cap is provided on the oil filling port, and the convex ring sealing ring for fixing the oil filling port on the sealing plug body is cancelled, solving the problem of difficult insertion and extraction of the oil filling cap and poor user experience. By providing a groove along the inside of the front end of the sealing plug body of the sealing plug body, the front side wall of the sealing plug body is set as an inclined edge, and the outer wall of the sealing plug body at the rear of the inclined edge is an outward-expanded inclined surface, and the outward-expanded inclined surface realizes sealing with the oil filling port. The inclined edge facilitates the insertion of the sealing plug body into the oil filling port. When the sealing plug body is pulled out, the outward-expanded inclined surface forms an elastic constriction through the groove of the sealing plug body, so as to pull out the sealing plug body. This solution realizes a better insertion and extraction experience between the oil filling cap and the oil filling port. On the other hand, the atomization core structure designed by this solution is beneficial to avoiding the situation of oil leakage from the atomization core, making the cartridge have a longer service life through secondary refueling, being more economical, and reducing waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic exploded view of the structure of an embodiment of the present utility model.

[0014] Figure 2 It is a schematic exploded view of the atomization core structure of an embodiment of the present utility model.

[0015] Figure 3 It is a structural sectional view of the oil filling cap of an embodiment of the present utility model.

[0016] Figure 4 It is an overall structural sectional view of an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall also fall within the scope of protection of the present disclosure.

[0018] Please refer to Figures 1 to 4, An e-cigarette cartridge with a self-priming oil filling cap provided by this technical solution, which includes a cartridge housing 1, an atomization core 2, a silicone base 3, and a bottom cover 4. The cartridge housing 1 is hollow and open at the lower end. The upper end of the cartridge housing 1 is provided with a mouthpiece portion 101. The silicone base 3 is provided with a through-hole insertion position 31. The lower end of the atomization core 2 is inserted into the through-hole insertion position 31, and the upper end of the atomization core 2 is butted against the inner lower end of the mouthpiece portion 101. The silicone base 3 and the bottom cover 4 are sleeved at the lower end opening of the cartridge housing 1, and the bottom cover 4 is snap-fitted with the cartridge housing 1. The bottom cover 4 is provided with an air inlet hole. An oil filling port 102 is provided on the side wall of the cartridge housing 1. An oil filling cap 5 is provided at the oil filling port 102. The oil filling cap 5 includes a sealing plug body 52 and a cover plate 51 integrally formed with the sealing plug body 52. A first magnet group 6 is provided at the symmetric outer position of the oil filling port 102. The oil filling cap 5 covers the oil filling port 102, and a second magnet group 7 is provided at the position of the cover plate 51 corresponding to the first magnet group 6. The first magnet group 6 and the second magnet group 7 attract each other with opposite poles to realize the adsorption of the oil filling cap 5 at the oil filling port 102.

[0019] The atomization core 2 includes an outer tube body 21, a first oil guiding cotton tube 22 sleeved inside the outer tube body 21, an inner tube body 23 sleeved inside the first oil guiding cotton tube 22, a second oil guiding cotton tube 24 sleeved inside the inner tube body 23, and a heating wire 25 sleeved inside the second oil guiding cotton tube 24. The side walls of the outer tube body 21 and the inner tube body 23 are both provided with oil guiding through holes.

[0020] Furthermore, the first magnet group 6 includes at least two magnets, and the number of magnets in the second magnet group 7 is the same as that of the first magnet group 6. Preferably, two magnets are arranged on each of the upper and lower sides or the left and right sides of the oil filling port 102.

[0021] Referring to Figure 3 、 Figure 4 , Preferably, the cartridge housing 1 is provided with a recess for embedding the cover plate 51 around the oil filling port 102. The sealing plug body 52 and the cover plate 51 are integrally formed with food-grade silicone. A groove 521 is provided along the inside of the front end of the sealing plug body 52. The front side wall of the sealing plug body 52 is provided with an inclined surface edge a. The outer wall of the sealing plug body 52 behind the inclined surface edge a is an outward-expanded inclined surface b. The outward-expanded inclined surface b is sealed with the oil filling port 102. The inclined surface edge a is beneficial for the sealing plug body 52 to enter the oil filling port 102 more easily. The outward-expanded inclined surface b is used to achieve a tight fit and sealing effect on the edge of the oil filling port 102. The design of the groove 521 of the sealing plug body 52 is to achieve the elastic constriction effect of the outward-expanded inclined surface b of the sealing plug body 52 when it enters the oil filling port 102.

[0022] By designing the magnetic suction type oil filling cap 5, the sealing plug body 52 designed for the oil filling cap 5 to cover the oil filling port 102 cancels the fixing of the convex ring sealing ring with the oil filling port 102, solving the problem that the oil filling cap 5 is difficult to insert and pull out and the experience is not good.

[0023] Preferably, an annular concave position 211 is provided on the outer wall of the upper end of the outer tube body 21, and a silica gel sealing ring 8 is sleeved in the annular concave position 211.

[0024] Referring to Figure 2 、 Figure 4 , the outer tube body 21 and the inner tube body 23 are made of food-grade stainless steel materials. The outer wall of the lower end of the inner tube body 23 is provided with a first-stage step 231 and a second-stage step 232 around the circumference. The bottom wall of the first-stage step 231 abuts against the lower end of the outer tube body 21, and the side wall of the first step 231 is tightly connected with the inner wall of the outer tube body 21. A gap for installing the first oil guide cotton tube 22 is formed between the side wall of the second step 232 and the inner wall of the outer tube body 21. The lower end of the first oil guide cotton tube 22 abuts against the bottom wall of the second step 232.

[0025] Furthermore, a convex ring portion 233 integrally formed with the inner tube body 23 is provided on the inner wall of the inner tube body 23 corresponding to the position of the second step 232. An assembly position for sleeving the second oil guide cotton tube 24 is formed between the top surface of the convex ring portion 233 and the inner wall of the inner tube body 23.

[0026] Furthermore, a groove ring portion 234 is provided on the inner wall of the inner tube body 23 corresponding to the position below the convex ring portion 233. An inverted hook-shaped outer edge 311 is provided at the upper end of the through-hole insertion position 31 of the silica gel base 3. The inverted hook-shaped outer edge 311 is engaged with the groove ring portion 234 to fix the atomization core 2.

[0027] Through the structure of the atomization core 2 designed by the above scheme, a double oil guide cotton structure of the atomization core 2 is realized, and the problem of oil leakage of the atomization core 2 is solved. In addition, the atomization core 2 and the silica gel base 3 are assembled in a snap-fit manner, and the assembly is simple and easy to realize automatic assembly.

[0028] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications or improvements to the technologies in the market, or to enable other ordinary technical personnel in the technical field to understand the disclosed embodiments.

Claims

1. An electronic cigarette cartridge with a self-priming oil filling cap, comprising a cartridge housing (1), an atomizing core (2), a silicone base (3), and a bottom cover (4), wherein the cartridge housing (1) is hollow and has an opening at the lower end, a suction nozzle (101) is provided at the upper end of the cartridge housing (1), the silicone base (3) is provided with a through-hole plug-in position (31), the lower end of the atomizing core (2) is plugged into the through-hole plug-in position (31), the upper end of the atomizing core (2) is butt-jointed to the inner lower end of the suction nozzle (101), the silicone base (3) and the bottom cover (4) are sleeved at the lower end opening of the cartridge housing (1), the bottom cover (4) is snap-connected with the cartridge housing (1), and the bottom cover (4) is provided with an air inlet hole, characterized in that: The side wall of the cigarette cartridge housing (1) is provided with an oil filling port (102), and an oil filling cap (5) is provided at the oil filling port (102). The oil filling cap (5) comprises a sealing plug body (52) and a cover plate (51) integrally formed with the sealing plug body (52). A first magnet group (6) is provided at a symmetrical outer position of the oil filling port (102), the oil filling cap (5) covers the oil filling port (102), and a second magnet group (7) is provided at a position of the cover plate (51) corresponding to the first magnet group (6). The first magnet group (6) and the second magnet group (7) attract each other with opposite poles, so that the oil filling cap (5) is adsorbed at the oil filling port (102); The atomizing core (2) comprises an outer tube body (21), a first oil-conducting cotton tube (22) sleeved in the outer tube body (21), an inner tube body (23) sleeved in the first oil-conducting cotton tube (22), a second oil-conducting cotton tube (24) sleeved in the inner tube body (23), and a heating wire (25) sleeved in the second oil-conducting cotton tube (24); and the side walls of the outer tube body (21) and the inner tube body (23) are both provided with oil-conducting through holes.

2. The e-cigarette cartridge with a self-priming oil filling cap according to claim 1, wherein, The first magnet group (6) comprises at least two magnets, and the number of magnets in the second magnet group (7) is the same as that in the first magnet group (6).

3. The electronic cigarette cartridge with a self-priming oil filling cap according to claim 1, characterized in that, The cigarette cartridge housing (1) is provided with a recessed position for embedding the cover plate (51) on the periphery of the oil filling port (102); the sealing plug body (52) and the cover plate (51) are integrally formed using food-grade silicone; a groove (521) is provided inside the front end of the sealing plug body (52); the front end side wall of the sealing plug body (52) is provided as a bevel edge (a); the outer wall of the sealing plug body (52) at the rear end of the bevel edge (a) is provided as an outwardly expanded bevel (b); and the outwardly expanded bevel (b) is sealed with the oil filling port (102).

4. The electronic cigarette cartridge provided with a self-priming oil filling cap according to claim 1, wherein, The outer wall of the upper end of the outer tube body (21) is provided with a concave ring position (211), and a silicone sealing ring (8) is sleeved inside the concave ring position (211).

5. The electronic cigarette cartridge provided with a self-priming oil filling cap according to claim 1, wherein, The outer tube body (21) and the inner tube body (23) are made of food-grade stainless steel. The outer wall of the lower end of the inner tube body (23) is provided with a first step (231) and a second step (232). The bottom wall of the first step (231) abuts against the lower end of the outer tube body (21). The side wall of the first step (231) is tightly connected to the inner wall of the outer tube body (21). The side wall of the second step (232) and the inner wall of the outer tube body (21) form a gap for installing the first oil-conducting cotton tube (22). The lower end of the first oil-conducting cotton tube (22) abuts against the bottom wall of the second step (232).

6. The e-cigarette cartridge provided with a self-priming oil filling cap according to claim 5, wherein, An inner tube body (23) is provided with a convex ring portion (233) integrally formed with the inner tube body (23) on the inner wall corresponding to the position of the second step (232). The top surface of the convex ring portion (233) and the inner wall of the inner tube body (23) form an assembly position for sleeving a second oil guiding cotton tube (24).

7. The e-cigarette cartridge provided with a self-priming oil filling cap according to claim 6, wherein, The inner wall of the inner tube body (23) corresponding to the position below the convex ring portion (233) of the inner tube body (23) is provided with a groove ring portion (234). An upper end of a through hole insertion position (31) of the silica gel base (3) is provided with an inverted hook-shaped outer edge (311). The inverted hook-shaped outer edge (311) is engaged with the groove ring portion (234) to fix the atomization core (2).

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