Sealing structure of oil storage cabin

Abstract

According to the oil storage cabin sealing structure, a liquid injection plug cover is connected with a limiting plug cover in an adjacent mode, the liquid injection plug cover is arranged on an oil storage cabin in an attached mode and inserted into a second opening, and the limiting plug cover is arranged on the oil storage cabin in an attached mode and inserted into a limiting counter bore. When the cigarette holder assembly rotates to the first position, the cigarette holder assembly is arranged on the face, back to the oil storage cabin body, of the liquid injection plug cover in a pressing mode, the liquid injection plug cover is correspondingly locked in the second opening, at the moment, the liquid injection plug cover is oppositely arranged in the second opening in a fastened mode, then the second opening is closed, and when the cigarette holder assembly rotates to the second position, the cigarette holder assembly avoids the face, back to the oil storage cabin body, of the liquid injection plug cover. The liquid injection plug cover is correspondingly unlocked in the second opening, at the moment, the liquid injection plug cover is relatively movably arranged in the second opening, it can be seen that a user can be effectively prevented from opening the liquid injection plug cover by mistake in the non-liquid-injection state by rotating the cigarette holder assembly, and the misoperation risk is reduced.

Description

Technical Field

[0001] This application belongs to the field of electronic cigarette technology, and more specifically, relates to a closed structure for an oil storage tank. Background Technology

[0002] Many e-cigarette products on the market currently use a pre-packaged e-liquid tank, which is pre-filled with a portion of basic e-liquid. Users can then add e-liquid or flavorings as needed during subsequent use to achieve a mixed flavor experience.

[0003] However, current e-cigarette e-liquid tanks typically use a removable cap structure, allowing users to easily refill the e-liquid. However, this design presents several drawbacks. First, the cap is prone to loosening or detachment during transport, storage, or use due to vibration, external pressure, or accidental operation. It can even be accidentally opened when not refilling, leading to e-liquid leakage, which not only affects the user experience but also poses safety hazards. Second, regardless of whether the cap is closed or open, it can detach entirely from the e-liquid tank, increasing the risk of loss and compromising product reliability. Summary of the Invention

[0004] The purpose of this application is to provide a closed structure for the oil storage tank, which aims to solve the problem that the oil storage tank of current e-cigarettes usually adopts a pluggable cap structure. However, during the carrying, storage or use of the existing cap structure, the cap is prone to loosening or falling off due to vibration, external pressure or misoperation. It may even be accidentally opened when not filled with liquid, resulting in e-liquid leakage, which not only affects the user experience but also poses a safety hazard. Furthermore, regardless of whether the existing cap structure is closed or open, the cap may detach completely from the oil storage tank, which can easily lead to the loss of the cap and affect the reliability of the product.

[0005] To achieve the above objectives, the technical solution adopted in this application is to provide a closed structure for an oil storage tank, including an oil storage tank body, a mouthpiece assembly, a liquid injection plug, and a limiting plug. The oil storage tank body has an oil storage chamber with a first opening and a second opening respectively communicating with the outside. The mouthpiece assembly is rotatably mounted on the oil storage tank body and inserted into the first opening. The liquid injection plug is adjacent to and connected to the limiting plug, and the liquid injection plug is fitted onto the oil storage tank body and inserted into the second opening. The limiting plug is fitted... The nozzle assembly is installed on the oil storage tank. It is always pressed against the side of the limiting plug that faces away from the oil storage tank, and the limiting plug is always locked in the limiting countersunk hole. When the nozzle assembly is rotated to the first position, it is pressed against the side of the liquid injection plug that faces away from the oil storage tank, and the liquid injection plug is locked in the second opening. When the nozzle assembly is rotated to the second position, it avoids the side of the liquid injection plug that faces away from the oil storage tank, and the liquid injection plug is unlocked in the second opening.

[0006] In one embodiment, the outer wall of the oil storage tank is provided with a limiting countersunk hole. The liquid injection plug cover includes a liquid injection cover body and a liquid injection plug body fixedly disposed on the liquid injection cover body. The limiting plug cover includes a limiting cover body and a limiting plug body fixedly disposed on the limiting cover body. The liquid injection cover body is adjacent to the limiting cover body. The liquid injection cover body and the limiting cover body are tightly fitted together on the outer wall of the oil storage tank. The liquid injection plug body is correspondingly inserted into the first opening, and the limiting plug body is correspondingly inserted into the limiting countersunk hole. The mouthpiece assembly is always pressed against the side of the limiting cover body facing away from the oil storage tank body, and the limiting plug body is always relatively locked in the limiting countersunk hole. When the mouthpiece assembly is rotated to the first position, the mouthpiece assembly is immediately pressed against the side of the liquid injection cover body facing away from the oil storage tank body, and the liquid injection plug body is correspondingly locked in the second opening. When the mouthpiece assembly is rotated to the second position, the mouthpiece assembly immediately avoids the side of the liquid injection cover body facing away from the oil storage tank body, and the liquid injection plug body is correspondingly unlocked in the second opening.

[0007] In one embodiment, the outer wall of the oil storage tank is provided with a cover groove, and the positioning countersunk hole and the second opening are both provided in the cover groove. The liquid injection cover and the limiting cover are adapted to fit into the cover groove.

[0008] In one embodiment, the oil storage tank is provided with an atomizing channel, which has a first opening connecting to the outside and a third opening connecting to the oil storage chamber. The mouthpiece assembly includes a rotating shell, a connecting pipe, and a riveting joint. The rotating shell is rotatably mounted on the outer wall of the oil storage tank. The connecting pipe is mounted on the rotating shell and extends into the atomizing channel through the first opening. The riveting joint is located inside the oil storage chamber and extends into the atomizing channel through the third opening. One end of the riveting joint extending into the atomizing channel is riveted and fastened to the connecting pipe extending into the atomizing channel. On the inner side of one end of the channel, the rotating shell is axially limited and abuts against the outer wall of the oil storage chamber along the atomizing channel toward the oil storage chamber. The riveted joint is axially limited and abuts against the inner wall of the oil storage chamber along the atomizing channel away from the oil storage chamber. The rotating shell is finally pressed against the side of the limiting cover away from the oil storage chamber. When the rotating shell rotates to the first position, the rotating shell is immediately pressed against the side of the liquid injection cover away from the oil storage chamber. When the rotating shell rotates to the second position, the rotating shell immediately avoids the side of the liquid injection cover away from the oil storage chamber.

[0009] In one embodiment, the mouthpiece assembly further includes an elastic collar, a fixed ring groove is coaxially provided on the atomizing channel, the fixed ring groove is directly connected to the oil storage chamber along the axial direction of the atomizing channel toward the oil storage chamber, the elastic collar is ringed on the outer wall of the connecting tube and embedded in the fixed ring groove, the outer ring of the elastic collar elastically abuts against the inner wall of the fixed ring groove, the inner ring of the elastic collar elastically abuts against the outer wall of the connecting tube, and a limiting ring portion is coaxially provided on the outer wall of the riveting joint, the limiting ring portion is located in the oil storage chamber, and the limiting ring portion is axially limited and abuts against the elastic collar in the fixed ring groove along the axial direction of the atomizing channel away from the oil storage chamber.

[0010] In one embodiment, the outer wall of the oil storage tank is also provided with a limiting arc groove. The limiting arc groove has a first end and a second end along the arc-shaped extension direction. The bottom of the rotating shell is provided with a limiting protrusion that extends into the limiting arc groove. When the rotating shell rotates and the limiting protrusion abuts against the first end, the rotating shell is immediately in the first position and is pressed against the side of the liquid injection plug cover facing away from the oil storage tank. When the rotating shell rotates and the limiting protrusion abuts against the second end, the rotating shell is immediately in the second position and avoids the side of the liquid injection plug cover facing away from the oil storage tank.

[0011] The beneficial effect of the oil storage tank sealing structure provided in this application is that, compared with the prior art, in the above-mentioned oil storage tank sealing structure, the injection plug cover is adjacent to the limiting plug cover, the injection plug cover is fitted onto the oil storage tank and inserted into the second opening, and the limiting plug cover is fitted onto the oil storage tank and inserted into the limiting countersunk hole. When the mouthpiece assembly is rotated to the first position, the mouthpiece assembly presses against the side of the injection plug cover facing away from the oil storage tank, and locks the injection plug cover into the second opening accordingly. At this time, the injection plug cover is relatively securely installed in the second opening, thereby closing the second opening. When the mouthpiece assembly is rotated to the second position, the mouthpiece assembly avoids the side of the injection plug cover facing away from the oil storage tank, and unlocks the injection plug cover into the second opening accordingly. In the opening, the liquid filling plug is relatively movable in the second opening. The second opening can be opened by pulling out the liquid filling plug. It can be seen that by rotating the mouthpiece assembly, the user can effectively prevent the liquid filling plug from being opened accidentally when not filling, reducing the risk of misoperation. In addition, the liquid filling plug is connected to the limiting plug, and the mouthpiece assembly is always pressed against the side of the limiting plug facing away from the oil reservoir. In this way, the liquid filling plug will never detach from the oil reservoir, whether it is inserted into or pulled out of the second opening. This prevents the liquid filling plug from loosening or even falling off due to vibration, external pressure, or repeated insertion and removal during the carrying or use of the e-cigarette, which could cause e-liquid leakage or loss of the liquid filling plug. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of the structure of the oil storage compartment in a portable electronic cigarette provided in an embodiment of this application when the closed structure is in a locked state;

[0014] Figure 2 for Figure 1 The diagram shows the unlocked state of the oil storage compartment in a portable electronic cigarette.

[0015] Figure 3 for Figure 1 A partial cross-sectional structural diagram of the enclosed structure of the oil storage tank shown.

[0016] Figure 4 for Figure 3 A partially enlarged schematic diagram of the atomization channel in the cross-sectional structure shown;

[0017] Figure 5 for Figure 3A partially enlarged schematic diagram of the injection channel in the cross-sectional structure shown;

[0018] Figure 6a for Figure 1 A top view of the enclosed structure of the oil storage tank shown in the diagram.

[0019] Figure 6b for Figure 1 A bottom view of the rotating shell in the enclosed structure of the oil storage tank shown.

[0020] Figure 7 for Figure 1 A schematic diagram of the liquid injection plug and the limiting plug in the closed structure of the oil storage tank shown;

[0021] Figure 8 for Figure 7 The diagram shows the main structural view of the injection plug and the limiting plug.

[0022] In the diagram: 10. Portable electronic cigarette; 20. Enclosed structure of the oil storage tank; 100. Oil storage tank; 110. Oil storage chamber; 120. Atomization channel; 122. First opening; 124. Third opening; 126. Fixing ring groove; 130. Liquid injection channel; 132. Second opening; 134. Fourth opening; 140. Limiting countersunk hole; 150. Limiting arc groove; 160. Cover groove; 200. Mouthpiece assembly; 210. Rotating shell; 212. Limiting protrusion; 220. Connecting tube; 230. Riveted joint; 232. Limiting ring; 240. Fastening collar; 250. Elastic collar; 300. Liquid injection plug cap; 310. Liquid injection cap body; 320. Liquid injection plug body; 400. Limiting plug cap; 410. Limiting cap body; 420. Limiting plug body; 30. Battery compartment. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 6aThe present application will now describe an embodiment of a portable electronic cigarette 10. The portable electronic cigarette 10 includes a liquid storage compartment enclosure structure 20 and a battery compartment 30. The liquid storage compartment enclosure structure 20 includes a liquid storage compartment 100, a mouthpiece assembly 200, an injection plug 300, and a limiting plug 400. The battery compartment 30 is snap-fitted onto the liquid storage compartment 100. The outer wall of the liquid storage compartment 100 has a limiting countersunk hole 140, and the interior of the liquid storage compartment 100 has a liquid storage chamber 110. The oil chamber 110 is provided with a first opening 122 and a second opening 132 for communicating with the outside, respectively. The mouthpiece assembly 200 is rotatably mounted on the oil storage tank 100 and inserted into the first opening 122. The liquid injection plug 300 is adjacent to the limiting plug 400. The liquid injection plug 300 is fitted onto the oil storage tank 100 and inserted into the second opening 132. The limiting plug 400 is fitted onto the oil storage tank 100 and inserted into the limiting countersunk hole 140. The mouthpiece assembly 200 is always pressed against the oil storage tank. With the limiting plug 400 facing away from the oil storage tank 100, and the limiting plug 400 always locked in the limiting countersunk hole 140, the limiting plug 400 is fixedly inserted into the limiting countersunk hole 140 and restricted from being pulled out of the limiting countersunk hole 140. When the mouthpiece assembly 200 rotates to the first position, the mouthpiece assembly 200 presses against the side of the liquid injection plug 300 facing away from the oil storage tank 100, and the liquid injection plug 300 is correspondingly locked in the second opening 132. At this time, the liquid injection plug 300... The nozzle assembly 200 is fixedly inserted into the second opening 132 and restricted from being pulled out of the second opening 132 in order to close the second opening 132. When the nozzle assembly 200 is rotated to the second position, the nozzle assembly 200 avoids the side of the liquid injection plug 300 facing away from the oil storage tank 100, and the liquid injection plug 300 is correspondingly unlocked in the second opening 132. At this time, the liquid injection plug 300 is movably inserted into the second opening 132 and the restriction on the insertion and removal of the liquid injection plug 300 is released in order to open the second opening 132.

[0028] The beneficial effect of the oil storage tank sealing structure 20 provided in this application is that, compared with the prior art, in the above-mentioned oil storage tank sealing structure 20, the injection plug 300 is adjacent to the limiting plug 400, the injection plug 300 is fitted onto the oil storage tank 100 and inserted into the second opening 132, and the limiting plug 400 is fitted onto the oil storage tank 100 and inserted into the limiting countersunk hole 140. When the mouthpiece assembly 200 is rotated to the first position, the mouthpiece... The component 200 is pressed against the side of the injection plug cap 300 facing away from the oil storage tank 100, and the injection plug cap 300 is correspondingly locked in the second opening 132. At this time, the injection plug cap 300 is relatively tightly fixed in the second opening 132, thereby closing the second opening 132. When the mouthpiece assembly 200 is rotated to the second position, the mouthpiece assembly 200 avoids the side of the injection plug cap 300 facing away from the oil storage tank 100, and the injection plug cap 300 is correspondingly released. Locked in the second opening 132, the liquid filling plug 300 is relatively movable in the second opening 132. The second opening 132 can be opened by pulling out the liquid filling plug 300. It can be seen that by rotating the mouthpiece assembly 200, the user can be effectively prevented from accidentally opening the liquid filling plug 300 when not filling, reducing the risk of misoperation. In addition, the liquid filling plug 300 is connected to the limiting plug 400. The mouthpiece assembly 200 is always pressed against the side of the limiting plug 400 facing away from the oil storage tank 100. In this way, the liquid filling plug 300 will never detach from the oil storage tank 100, whether it is inserted into or pulled out of the second opening 132. This prevents the liquid filling plug 300 from loosening or even falling off due to vibration, external pressure or repeated insertion and removal during the carrying or use of the portable electronic cigarette 10, which would cause e-liquid leakage or loss of the liquid filling plug 300.

[0029] Please refer to the following: Figure 3 and Figure 4In this embodiment, the oil storage tank 100 is provided with an atomizing channel 120. The atomizing channel 120 has a first opening 122 communicating with the outside and a third opening 124 communicating with the oil storage chamber 110. The mouthpiece assembly 200 includes a rotating shell 210, a connecting pipe 220, and a riveting joint 230. The rotating shell 210 is rotatably disposed on the outer wall of the oil storage tank 100. The connecting pipe 220 is disposed on the rotating shell 210 and extends into the atomizing channel 120 through the first opening 122. The riveting joint 230 is disposed in the oil storage chamber 110 and extends into the atomizing channel 120 through the third opening 124. One end of the riveting joint 230 extending into the atomizing channel 120 is riveted and fastened to the inner side of one end of the connecting pipe 220 extending into the atomizing channel 120. The rotating shell 210 is axially limited and abuts against the atomizing channel 120 toward the oil storage chamber 110. On the outer wall of the oil storage tank 100, the riveted joint 230 is axially positioned along the atomization channel 120 away from the inner wall of the oil storage chamber 110, thus achieving axial positioning of the rotating shell 210, the connecting pipe 220, and the riveted joint 230 along the atomization channel 120. This ensures that the rotating shell 210, the connecting pipe 220, and the riveted joint 230 can only rotate circumferentially along the atomization channel 120, and cannot rotate along the atomization channel 120. The channel 120 moves axially, and the rotating housing 210 is finally pressed against the side of the limiting cover 410 facing away from the oil storage tank 100. When the rotating housing 210 rotates to the first position, the rotating housing 210 is pressed against the side of the liquid injection cover 310 facing away from the oil storage tank 100. When the rotating housing 210 rotates to the second position, the rotating housing 210 immediately avoids the side of the liquid injection cover 310 facing away from the oil storage tank 100.

[0030] Furthermore, in this embodiment, the above-mentioned mouthpiece assembly 200 also includes a fastening collar 240. The fastening collar 240 is located in the atomization channel 120 and is arranged around the outer wall of the end of the connecting tube 220 that extends into the atomization channel 120. The fastening collar 240 is used to radially lock the end of the riveting joint 230 that extends into the atomization channel 120 inside the end of the connecting tube 220 that extends into the atomization channel 120, so as to prevent the end of the riveting joint 230 that extends into the atomization channel 120 from accidentally separating from the end of the connecting tube 220 that extends into the atomization channel 120 along the axial direction of the atomization channel 120.

[0031] Furthermore, in this embodiment, the above-mentioned mouthpiece assembly 200 also includes an elastic collar 250. The atomizing channel 120 is coaxially provided with a fixing ring groove 126. The fixing ring groove 126 is directly connected to the oil storage chamber 110 along the axial direction of the atomizing channel 120 toward the oil storage chamber 110. The elastic collar 250 is encircled on the outer wall of the connecting tube 220 and embedded in the fixing ring groove 126. The inner ring of the elastic collar 250 elastically abuts against the outer wall of the fastening collar 240, and the outer ring of the elastic collar 250 elastically abuts against the inner wall of the fixing ring groove 126. The outer wall of the riveting joint 230 is coaxially provided with a limiting ring portion 232. The limiting ring portion 232 is located in the oil storage chamber 110, and the limiting ring portion 232 abuts against the inner wall of the oil storage chamber 110 along the axial direction of the atomizing channel 120 away from the oil storage chamber 110, and limits the elastic collar 250 to abut in the fixing ring groove 126.

[0032] It should be noted that, in this embodiment, the outer ring of the elastic collar 250 elastically abuts against the inner wall of the fixed ring groove 126, and the inner ring of the elastic collar 250 elastically abuts against the outer wall of the fastening collar 240. On the one hand, the elastic collar 250 is used to increase the rotational friction of the connecting tube 220 in the atomization channel 120 along the circumference of the atomization channel 120, thereby preventing the rotating housing 210 of the mouthpiece assembly 200 from accidentally rotating and opening the second opening 132 during the carrying of the portable electronic cigarette 10. On the other hand, the elastic collar 250 is also used to seal the atomization channel 120, thereby preventing the e-liquid in the oil storage chamber 110 from leaking out of the atomization channel 120.

[0033] Specifically, in this embodiment, the outer ring of the elastic collar 250 is provided with a friction surface (not shown in the figure), and the inner ring of the elastic collar 250 has a smooth surface (not shown in the figure). It can be understood that the friction surface has a higher coefficient of friction than the smooth surface. In this way, the elastic collar 250 is relatively fixedly embedded in the fixed ring groove 126, and when the connecting tube 220 rotates circumferentially along the atomization channel 120, the elastic collar 250 is not easy to rotate accordingly with the connecting tube 220.

[0034] It should be noted that, in this embodiment, the aforementioned fixed ring groove 126 directly connects to the oil storage chamber 110 along the axial direction of the atomizing channel 120 toward the oil storage chamber 110, and the limiting ring portion 232 abuts against the inner wall of the oil storage chamber 110 along the axial direction of the atomizing channel 120 away from the oil storage chamber 110, and limits the elastic collar 250 in the fixed ring groove 126. On the one hand, the limiting ring portion 232 is used to cooperate with the bottom of the rotating housing 210 to realize the axial limitation of the rotating housing 210, the connecting tube 220 and the riveting joint 230 along the atomizing channel 120. On the other hand, the limiting ring portion 232... 2. The elastic collar 250 is used to limit and fix the fixed ring groove 126. In this way, during the assembly of the oil storage tank enclosure structure 20, the elastic collar 250 can be extended from one side of the oil storage chamber 110 into the fixed ring groove 126 and placed around the outer wall of the fastening collar 240. Then, the riveting joint 230 is extended from one side of the oil storage chamber 110 into the atomization channel 120 to rivet and connect the connecting pipe 220. At the same time, the limiting ring part 232 on the riveting joint 230 simultaneously limits and fixes the elastic collar 250 in the fixed ring groove 126, realizing a convenient assembly process for the oil storage tank enclosure structure 20.

[0035] Please refer to the following: Figure 6a and Figure 6b In this embodiment, the outer wall of the top of the oil storage tank 100 is provided with a limiting arc groove 150. The limiting arc groove 150 has a first end and a second end along its own arc-shaped extension direction. The bottom of the rotating shell 210 is provided with a limiting protrusion 212 that extends into the limiting arc groove 150. The first end and the second end are used to select the rotation angle of the rotating shell 210. When the rotating shell 210 rotates and the limiting protrusion 212 abuts against the first end, the rotating shell 210 is immediately located in the first position and is pressed against the side of the liquid injection plug 300 facing away from the oil storage tank 100. When the rotating shell 210 rotates and the limiting protrusion 212 abuts against the second end, the rotating shell 210 is immediately located in the second position and avoids the side of the liquid injection plug 300 facing away from the oil storage tank 100.

[0036] Specifically, in this embodiment, the outer wall of the top of the oil storage tank 100 is provided with two limiting arc grooves 150. The two limiting arc grooves 150 are arranged symmetrically with respect to the first opening 122. The bottom of the rotating shell 210 is provided with two limiting protrusions 212 that extend into the two limiting arc grooves 150 respectively.

[0037] Please refer to the following: Figure 7 and Figure 8In this embodiment, the aforementioned injection plug cap 300 includes an injection cap body 310 and an injection plug body 320 fixedly disposed on the injection cap body 310. The limiting plug cap 400 includes a limiting cap body 410 and a limiting plug body 420 fixedly disposed on the limiting cap body 410. The injection cap body 310 is adjacent to the limiting cap body 410. The injection cap body 310 and the limiting cap body 410 are tightly fitted together on the outer wall of the oil storage tank 100. The injection plug body 320 is correspondingly inserted into the first opening 122, and the limiting plug body 420 is correspondingly inserted into the limiting countersunk hole 140. The rotating shell 210 is always pressed against the side of the limiting cap body 410 facing away from the oil storage tank 100, and the limiting plug body 420 is always relatively locked in the limiting countersunk hole 140, thus ensuring that the limiting plug body... 420 is always fixedly inserted in the limiting countersunk hole 140. When the rotating housing 210 rotates to the first position, the rotating housing 210 presses against the side of the liquid injection cap 310 facing away from the oil storage tank 100, and locks the liquid injection plug 320 in the second opening 132 accordingly. Thus, the liquid injection plug 320 is fixedly inserted in the second opening 132. When the rotating housing 210 rotates to the second position, the rotating housing 210 immediately avoids the side of the liquid injection cap 310 facing away from the oil storage tank 100, and unlocks the liquid injection plug 320 in the second opening 132 accordingly. Thus, the liquid injection plug 320 is movably inserted in the second opening 132. At this time, the liquid injection cap 310 can be lifted to pull the liquid injection plug 320 out of the second opening 132.

[0038] In this embodiment, the aforementioned injection cap 310 and limiting cap 410 are integrally formed, the injection plug 320 is integrally formed on the injection cap 310, and the limiting plug 420 is integrally formed on the limiting cap 410. The outer wall of the top of the oil storage tank 100 is provided with a cap groove 160, and the positioning countersunk hole and the second opening 132 are both provided in the cap groove 160. The injection cap 310 and the limiting cap 410 are adapted to fit into the cap groove 160. In this way, the outer surface of the oil storage tank 100 remains flat, which makes it easy for the rotating shell 210 to press onto the side of the injection cap 310 facing away from the oil storage tank 100 and the side of the limiting cap 410 facing away from the oil storage tank 100. Thus, the second opening 132 is closed without affecting the overall appearance of the product, thereby improving the integration and aesthetics of the product.

[0039] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tank body closure structure characterized by comprising: The system includes an oil storage tank, a mouthpiece assembly, a liquid injection plug, and a limiting plug. The outer wall of the oil storage tank has a limiting countersunk hole, and the interior of the oil storage tank has an oil storage chamber with a first opening and a second opening respectively communicating with the outside. The mouthpiece assembly is rotatably mounted on the oil storage tank and inserted into the first opening. The liquid injection plug is adjacent to and connected to the limiting plug, and is fitted onto the oil storage tank and inserted into the second opening. The limiting plug is fitted onto the oil storage tank. The mouthpiece assembly... The component is always pressed against the side of the limiting plug cover facing away from the oil storage tank, and the limiting plug cover is always locked in the limiting countersunk hole. When the mouthpiece assembly is rotated to the first position, the mouthpiece assembly is pressed against the side of the liquid injection plug cover facing away from the oil storage tank, and the liquid injection plug cover is correspondingly locked in the second opening. When the mouthpiece assembly is rotated to the second position, the mouthpiece assembly avoids the side of the liquid injection plug cover facing away from the oil storage tank, and the liquid injection plug cover is correspondingly unlocked in the second opening.

2. The oil storage tank body closure structure according to claim 1, characterized by The liquid injection cap includes a liquid injection cap body and a liquid injection plug body fixedly disposed on the liquid injection cap body. The limiting cap includes a limiting cap body and a limiting plug body fixedly disposed on the limiting cap body. The liquid injection cap body is adjacent to the limiting cap body. The liquid injection cap body and the limiting cap body are tightly fitted to the outer wall of the oil storage tank. The liquid injection plug body is correspondingly inserted into the first opening, and the limiting plug body is correspondingly inserted into the limiting countersunk hole. The mouthpiece assembly is always pressed against the limiting cap body, facing away from the oil storage tank. One side of the tank body, and the limiting plug is always locked in the limiting countersunk hole. When the mouthpiece assembly is rotated to the first position, the mouthpiece assembly is pressed against the side of the liquid filling cap facing away from the oil storage tank body, and the liquid filling plug is locked in the second opening. When the mouthpiece assembly is rotated to the second position, the mouthpiece assembly is moved away from the side of the liquid filling cap facing away from the oil storage tank body, and the liquid filling plug is unlocked in the second opening.

3. The oil storage tank body closure structure according to claim 2, characterized by The outer wall of the oil storage tank is provided with a cover groove, the limiting countersunk hole and the second opening are both provided in the cover groove, and the liquid injection cover and the limiting cover are adapted to fit into the cover groove.

4. The oil storage tank body closure structure according to claim 2, characterized by The oil storage tank is equipped with an atomizing channel. The atomizing channel has a first opening connecting to the outside and a third opening connecting to the oil storage chamber. The mouthpiece assembly includes a rotating shell, a connecting pipe, and a riveting joint. The rotating shell is rotatably mounted on the outer wall of the oil storage tank. The connecting pipe is mounted on the rotating shell and extends into the atomizing channel through the first opening. The riveting joint is located inside the oil storage chamber and extends into the atomizing channel through the third opening. One end of the riveting joint extending into the atomizing channel is riveted and fastened to the other end of the connecting pipe extending into the atomizing channel. On the inner side of the end, the rotating housing is axially limited and abuts against the outer wall of the oil storage chamber along the atomization channel toward the oil storage chamber, and the riveted joint is axially limited and abuts against the inner wall of the oil storage chamber along the atomization channel away from the oil storage chamber. The rotating housing is finally pressed against the side of the limiting cover away from the oil storage chamber. When the rotating housing rotates to the first position, the rotating housing is immediately pressed against the side of the injection cap away from the oil storage chamber. When the rotating housing rotates to the second position, the rotating housing immediately avoids the side of the injection cap away from the oil storage chamber.

5. The oil storage tank body closure structure according to claim 4, wherein The mouthpiece assembly further includes an elastic collar. The atomizing channel is coaxially provided with a fixed ring groove. The fixed ring groove directly connects to the oil storage chamber along the axial direction of the atomizing channel toward the oil storage chamber. The elastic collar is ringed on the outer wall of the connecting tube and embedded in the fixed ring groove. The outer ring of the elastic collar elastically abuts against the inner wall of the fixed ring groove, and the inner ring of the elastic collar elastically abuts against the outer wall of the connecting tube. The outer wall of the riveting joint is coaxially provided with a limiting ring portion. The limiting ring portion is located in the oil storage chamber and limits the elastic collar to abut against the fixed ring groove along the axial direction of the atomizing channel away from the oil storage chamber.

6. The oil storage tank body closure structure according to claim 4, wherein The outer wall of the oil storage tank is also provided with a limiting arc groove. The limiting arc groove has a first end and a second end along the arc-shaped extension direction. The bottom of the rotating shell is provided with a limiting protrusion that extends into the limiting arc groove. When the rotating shell rotates and the limiting protrusion abuts against the first end, the rotating shell is immediately located in the first position. The rotating shell is then pressed against the side of the injection plug cover facing away from the oil storage tank. When the rotating shell rotates and the limiting protrusion abuts against the second end, the rotating shell is immediately located in the second position. The rotating shell then avoids the side of the injection plug cover facing away from the oil storage tank.

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