A leak-proof bottle cap and container

Abstract

The utility model discloses a kind of leakproof bottle caps and containers, leakproof bottle cap includes lid and elastic plug. The inside of lid has first accommodating cavity and mounting hole, first accommodating cavity is communicated with mounting hole, lid is further provided with gas guide channel, gas guide channel can be communicated with the inside and outside of lid;Elastic plug is set in first accommodating cavity, elastic plug has elasticity, and elastic plug includes plug main body, plugging part and plug body, plug main body can be accommodated in first accommodating cavity, plug main body has vent hole, the inside of plug main body is communicated with the outside of plug main body by vent hole, plugging part is used to block gas guide channel, plug body is set in mounting hole, plug body has self-closing liquid outlet passage, and liquid outlet passage is used for liquid circulation.Elastic plug plugging part in leakproof bottle cap blocks gas guide channel, so that the gas of the outside of lid cannot enter bottle body, and the liquid outlet passage of plug body is in self-closing state, can prevent ink leakage and cause pollution.

Description

Technical Field

[0001] This utility model relates to the field of printer ink bottle technology, and in particular to a leak-proof bottle cap and container. Background Technology

[0002] With the rapid development of the social economy, the demand for printers in daily office work continues to rise. As an important piece of office equipment, printers rely on a stable ink supply from ink bottles. Specifically, ink bottles, containing ink, deliver ink to the print head through specific ink flow channels. Driven precisely by the print signal, the ink is ejected from nozzles in the print head and accurately lands on recording media such as paper, thus completing the clear recording of characters or graphics.

[0003] However, during actual use of the printer, the ink in the ink bottle will gradually run out. When the ink is low, it is necessary to replace it with a new ink bottle containing sufficient ink, which is usually installed in the printer upside down to ensure a continuous supply of ink to the printer.

[0004] Currently, most ink bottles on the market are installed upside down in the ink tank of the printer, ensuring a tight seal between the bottle cap and the ink filling port for smooth ink delivery. However, some existing ink bottle caps have a design flaw: ink leakage can easily occur during the upside-down installation process. This not only causes ink to drip outside the ink tank before being installed, contaminating the printer and surrounding environment, but may also spray onto the operator or bystanders, causing considerable inconvenience and distress. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a leak-proof bottle cap that prevents ink leakage when the ink bottle is inverted, thereby improving cleanliness and enhancing the user experience.

[0006] This utility model also proposes a container with the above-mentioned leak-proof cap.

[0007] According to a first aspect embodiment of the present invention, the leak-proof bottle cap includes:

[0008] A cover body, the inner side of which has a first receiving cavity and a mounting hole, the first receiving cavity communicating with the mounting hole, and the cover body further having an air guiding channel that connects the inner and outer sides of the cover body; and

[0009] An elastic plug is disposed in the first accommodating cavity. The elastic plug is elastic and includes a plug body, a sealing part, and a plug body. The plug body can be accommodated in the first accommodating cavity. The plug body has a vent hole, and the inner side of the plug body communicates with the outer side of the plug body through the vent hole. The sealing part is used to block the air guiding channel. The plug body is disposed in the mounting hole and has a self-sealing liquid outlet channel for liquid flow.

[0010] The leak-proof bottle cap according to this utility model embodiment has at least the following beneficial effects: In this leak-proof bottle cap, the air guide channel provided in the cap body connects the inner and outer sides. Combined with the special structure of the elastic plug, when the ink bottle is placed normally, the sealing part of the elastic plug blocks the air guide channel, preventing gas from the outside of the cap body from entering the bottle body. Meanwhile, the liquid outlet channel of the plug body is in a self-sealing state, preventing ink leakage and avoiding ink dripping outside the ink tank or spraying onto people, causing pollution. When the ink bottle is installed upside down in the printer ink tank and connected to the ink filling port, the internal structure of the printer presses against the plug body, causing the sealing part to no longer block the air guide channel. At the same time, the liquid outlet channel of the plug body opens, allowing ink to flow smoothly through the liquid outlet channel to supply ink to the printer. Furthermore, the vent hole of the plug body connects to the air guide channel, thereby balancing the internal and external air pressure and ensuring a smooth ink supply. This solves the ink leakage problem during installation and ensures the ink supply needs during normal printer operation, improving ease of use and safety, and reducing cleaning costs and environmental and personnel pollution caused by ink leakage.

[0011] According to some embodiments of the present invention, the plug body includes an installation part and a sealing part. The outer peripheral side of the installation part is interference-fitted with the inner peripheral side of the installation hole. The sealing part is located in the installation part, and the liquid outlet channel is disposed in the sealing part.

[0012] According to some embodiments of the present invention, the sealing part is an inwardly convex protrusion, the protrusion has a slit, and the slit forms the liquid outlet channel.

[0013] According to some embodiments of the present invention, the air guide channel has a second receiving cavity, the second receiving cavity being located at one end of the air guide channel near the inner side of the cover, and the sealing part being able to be sealed and received in the second receiving cavity.

[0014] According to some embodiments of the present invention, the plug body is provided with a plurality of vent holes, which are distributed along the circumferential direction of the plug body on the circumference of the plug body.

[0015] According to some embodiments of the present invention, a flange is provided at the lower end of the plug body, and the outer peripheral side of the flange is interference-fitted with the inner peripheral side of the cover body.

[0016] According to some embodiments of the present invention, the elastic plug is made of rubber material.

[0017] According to some embodiments of the present invention, a reinforcing rib is provided on the inner side of the plug body, and the length direction of the reinforcing rib extends along the axial direction of the elastic plug.

[0018] According to a second aspect of the present invention, the container includes a bottle body and a leak-proof cap as described in any of the first aspects of the present invention. The leak-proof cap can be placed on the bottle body, and the container can be used to store printer ink.

[0019] The container according to the embodiments of the present invention has at least the following beneficial effects: the container has all the beneficial effects brought about by the above-mentioned container, which will not be repeated here.

[0020] According to some embodiments of this utility model, the leak-proof bottle cap is connected to the bottle body by a thread, and the bottle mouth end of the bottle body abuts against the lower end face of the elastic plug.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of the leak-proof bottle cap according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure of the elastic plug of the leak-proof bottle cap is shown;

[0025] Figure 3 for Figure 1 A schematic diagram of a half-section of the leak-proof bottle cap is shown.

[0026] Figure 4 for Figure 1 A schematic diagram of a half-section of the leak-proof bottle cap body is shown;

[0027] Figure 5 for Figure 2 The diagram shows a half-section of the elastic plug.

[0028] Icon labels:

[0029] Cover 10; First accommodating cavity 11; Mounting hole 12; Air guide channel 13; Second accommodating cavity 131;

[0030] 20. Elastic plug; 21. Plug body; 211. Vent hole; 212. Flange; 213. Reinforcing rib; 22. Sealing part; 23. Plug body; 231. Mounting part; 232. Sealing part; 2321. Detailed Implementation

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0032] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Reference Figures 1 to 3 According to a first aspect embodiment of the present invention, the leak-proof bottle cap includes a cap body 10 and an elastic plug 20. The inner side of the cap body 10 has a first accommodating cavity 11 and a mounting hole 12, the first accommodating cavity 11 communicating with the mounting hole 12. The cap body 10 also has a venting channel 13, which connects the inner and outer sides of the cap body 10. The elastic plug 20 is disposed in the first accommodating cavity 11. The elastic plug 20 is elastic and includes a plug body 21, a sealing part 22, and a plug body 23. The plug body 21 is accommodated in the first accommodating cavity 11 and has a vent hole 211. The inner side of the plug body 21 communicates with the outer side of the plug body 21 through the vent hole 211. The sealing part 22 is used to seal the venting channel 13. The plug body 23 is disposed in the mounting hole 12 and has a self-sealing liquid outlet channel for liquid flow.

[0035] Specifically, this leak-proof bottle cap mainly consists of two parts: a cap body 10 and an elastic plug 20. The cap body 10 is made of high-strength, corrosion-resistant plastic material, and its inner side has a first receiving cavity 11 and a mounting hole 12, which are interconnected. A venting channel 13 is also provided on the cap body 10, which connects the inner and outer sides of the cap body 10. The diameter of the venting channel 13 is designed to a suitable size according to actual needs to ensure smooth gas passage. The elastic plug 20 is also made of plastic or rubber material with good elasticity. The elastic plug 20 includes a plug body 21, a sealing part 22, and a plug body 23. The plug body 21 is cylindrical and fits perfectly into the first receiving cavity 11 of the cap body 10. A vent hole 211 is provided on the plug body 21, which penetrates the inner and outer sides of the plug body 21, allowing gas exchange between the inside and outside of the plug body 21. The sealing part 22 is a small protruding structure or a flat sealing part 22. Its shape matches the outlet of the air guide channel 13 on the cover 10, or the flat sealing part 22 blocks the outlet of the air guide channel 13. When the ink bottle is placed normally or upside down, the sealing part 22 tightly seals the air guide channel 13 to prevent outside air from entering the interior and to prevent liquid leakage. The plug 23 is set in the mounting hole 12 of the cover 10. The plug 23 has a self-sealing liquid outlet channel. The liquid outlet channel is in a closed state when there is no external force. When the ink bottle is installed upside down in the printer ink tank and is subjected to pressure from the internal structure of the printer, the plug 23 moves inward to the inside of the cover 10, causing the plug 23 to drive the sealing part 22 away from the outlet of the air guide channel 13. At the same time, the liquid outlet channel opens. At this time, the inside and outside of the cover 10 are connected, so that the air pressure inside and outside the ink bottle is balanced, and the ink can flow out through the liquid outlet channel or the ink filling port of the printer.

[0036] In practical use, the leak-proof cap is installed on the ink bottle opening. When the ink bottle is placed normally or upside down, the sealing part 22 of the elastic stopper 20 can block the air passage 13 of the cap 10, and the liquid outlet channel of the stopper 23 is also in a self-sealing state. At this time, even if the ink bottle is shaken, the ink will not leak from the cap. When it is necessary to install the ink bottle into the printer ink tank, the ink bottle is inserted into the ink tank upside down, so that the liquid outlet channel is connected to the ink filling port of the printer. Under the pressure of the ink filling port in the printer, the stopper 23 is squeezed inward by the ink filling port towards the inside of the cap 10. At this time, the elastic stopper 20 undergoes a certain deformation, and the sealing part 22 is driven by the stopper 23 to no longer block the air passage 13. At this time, the air passage 13 connects the outside and inside of the cap 10, and the liquid outlet channel of the stopper 23 opens, thereby forming a pressure balance. The ink then flows into the printer ink tank through the liquid outlet channel, providing ink to the printer. During this process, the vent 211 of the stopper body 21 connects the ink bottle and the air passage 13 of the cap 10 to balance the air pressure inside and outside the ink bottle, ensuring that the ink can flow out continuously and stably to meet the ink supply needs of the printer. When the ink in the ink bottle is used up, after it is removed from the printer ink tank and placed upright, the elastic stopper 20 returns to its original state, the sealing part 22 seals the air passage 13 again, and the liquid outlet passage of the stopper body 23 also closes again to prevent residual ink leakage.

[0037] Therefore, it is understood that the leak-proof bottle cap according to the present utility model embodiment has at least the following beneficial effects: In the leak-proof bottle cap, the air guiding channel 13 provided in the cap body 10 connects the inner and outer sides. With the special structure of the elastic plug 20, when the ink bottle is placed normally, the sealing part 22 of the elastic plug 20 blocks the air guiding channel 13, so that the gas outside the cap body 10 cannot enter the bottle body, and the liquid outlet channel of the plug body 23 is in a self-sealing state, which can prevent ink leakage and avoid ink dripping outside the ink tank or spraying onto people and causing pollution. When the ink bottle is installed upside down into the printer's ink tank and connected to the ink filling port, the internal structure of the printer presses against the plug 23, causing the sealing part 22 to no longer block the air passage 13. At the same time, the liquid outlet channel of the plug 23 opens, allowing ink to flow smoothly through the liquid outlet channel to supply ink to the printer. Furthermore, the vent 211 of the plug body 21 connects to the air passage 13, thereby balancing the internal and external air pressure and ensuring a smooth ink supply. This solves the ink leakage problem during installation and ensures the ink supply needs of the printer during normal operation, improving the convenience and safety of use, and reducing the cleaning costs and pollution to the environment and personnel caused by ink leakage.

[0038] Furthermore, referring to Figures 2 to 3 as well as Figure 5In some embodiments of this utility model, the plug body 23 includes an installation part 231 and a sealing part 232. The outer peripheral side of the installation part 231 is interference-fitted with the inner peripheral side of the installation hole 12. The sealing part 232 is located in the installation part 231, and the liquid outlet channel is disposed in the sealing part 232.

[0039] In this embodiment, the stopper 23 has a specific structure to achieve good leak-proof and ink supply functions. The stopper 23 consists of an mounting part 231 and a sealing part 232. The mounting part 231 is made of a plastic or rubber material with a certain degree of flexibility and elasticity, and its outer peripheral dimension is designed to be slightly larger than the inner diameter of the mounting hole 12 on the cap 10. When the elastic stopper 20 is installed onto the cap 10, by applying appropriate pressure, the outer peripheral side of the mounting part 231 and the inner peripheral side of the mounting hole 12 form an interference fit connection. This interference fit connection ensures that the mounting part 231 and the mounting hole 12 fit tightly, effectively preventing ink leakage from the connection between the mounting part 231 and the mounting hole 12, and enhancing the sealing performance of the cap. The sealing part 232 is located at the center of the mounting part 231. It is integrally formed with the mounting part 231 and is made of the same material with good elasticity. The liquid outlet channel is set in the sealing part 232, and the shape of the liquid outlet channel is optimized according to the ink flow characteristics and ink supply requirements. When the ink bottle is in its normal position, the sealing part 232, relying on its own elasticity, keeps the ink outlet channel in a self-sealing state, acting like an automatically closing valve to prevent ink from flowing out. When the ink bottle is installed upside down in the printer's ink tank and connected to the ink filling port, the sealing part 232 undergoes slight elastic deformation under the pressure generated by the ink filling port inside the printer. The ink outlet channel then opens, allowing ink to flow smoothly into the printer's ink tank, providing ink support for the printer's normal operation. Simultaneously, due to the pressure from the ink filling port, the plug 23 moves inward towards the cover 10, causing the elastic plug 20 to undergo elastic deformation. This prevents the sealing part 22 from blocking the air passage 13, ultimately connecting the inside and outside of the ink bottle. This balances the air pressure inside and outside the ink bottle, allowing ink to flow smoothly into the printer. When the ink bottle is removed from the printer's ink tank and placed upright, the sealing part 232 returns to its original state, and the ink outlet channel automatically closes again, preventing residual ink leakage and ensuring leak-proof performance and ink supply stability throughout the entire usage process.

[0040] Furthermore, referring to Figure 1 Character Figure 2 as well as Figure 5 In some embodiments of this utility model, the sealing part 232 is an inwardly protruding protrusion with a slit 2321 forming a liquid outlet channel.

[0041] Specifically, in this embodiment, based on the leak-proof cap structure of the above embodiment, the sealing part 232 of the stopper 23 is further optimized. The sealing part 232 is designed as an inwardly convex bump, which is integrally formed with the mounting part 231 of the stopper 23. It is made of rubber material with good elasticity and flexibility to ensure that it can undergo appropriate deformation under different conditions. The bump is hemispherical and protrudes inward from the mounting part 231. This inwardly convex structure allows the bump to be subjected to force more evenly and deform when subjected to external force. A slit 2321 is provided on the bump. This slit 2321 is a man-made micro-gap that forms a liquid outlet channel. When the ink bottle is in a normal upright position, the bump, by its own elasticity, makes the slit 2321 close tightly, forming a tight seal, completely blocking the liquid outlet channel, effectively preventing ink from flowing out of the liquid outlet channel, avoiding ink leakage, and preventing ink from dripping outside the ink tank or spraying onto the surrounding environment and personnel. When the ink bottle is inverted, the ink squeezes the inward protrusion from the inside. Since the protrusion is hemispherical and protrudes inward from the mounting part 231, the ink squeezes the protrusion, making the crack 2321 more tightly closed. This also completely blocks the liquid outlet channel, effectively preventing ink from flowing out of the liquid outlet channel, avoiding ink leakage, and preventing ink from dripping outside the ink tank or spraying onto the surrounding environment and personnel.

[0042] When the ink bottle is installed upside down into the printer's ink tank, as the ink bottle is inverted and connected to the printer's ink filling port, the protruding bump inside the ink filling port undergoes elastic deformation. The originally tightly closed opening 2321 gradually opens, opening the ink outlet channel. Simultaneously, this causes the inner side of the cap 10 (stop body 23) to move, thus preventing the sealing part 22 from blocking the outlet of the air passage 13. At this point, ink can smoothly flow into the printer's ink tank through the opening opening 2321, providing a continuous and stable ink supply for the printer's printing operations. When the ink in the ink bottle is used up, after removing it from the printer's ink tank and placing it upright again, the protrusion is no longer subjected to external forces that would deform it. Relying on its own elastic restoring force, the protrusion quickly returns to its original shape, and the crack 2321 also closes tightly again, sealing the ink outlet channel and preventing the small amount of residual ink in the ink bottle from leaking out. At the same time, the sealing part 22 also returns to its original shape, sealing the outlet of the air duct 13, thereby ensuring the leak-proof performance and ink supply reliability of the entire ink bottle during use and improving the user experience.

[0043] Reference Figure 1 as well as Figures 3 to 4 In some embodiments of this utility model, the air guide channel 13 has a second receiving cavity 131, which is located at one end of the air guide channel 13 near the inner side of the cover 10, and the sealing part 22 can be sealed and received in the second receiving cavity 131.

[0044] Specifically, in this embodiment, the leak-proof cap features an optimized design for the venting channel 13 to improve leak-proof performance. The venting channel 13 has an elongated tubular structure on the cap body 10, with a second receiving cavity 131 located at one end near the inner side of the cap body 10. The shape of the second receiving cavity 131 is adapted to the sealing portion 22 of the elastic plug 20. Specifically, if the second receiving cavity 131 is a circular cavity, then the sealing portion 22 can be cylindrical. The diameter of the sealing portion 22 is slightly larger than the maximum outer diameter of the second receiving cavity 131, and the depth of the second receiving cavity 131 is also rationally designed according to the height of the sealing portion 22 to ensure that the sealing portion 22 can be completely and sealed within it.

[0045] When the ink bottle is placed upright or upside down, the sealing part 22 of the elastic stopper 20, under its own elasticity and the pressure of the ink inside the ink bottle, tightly seals the second receiving cavity 131. At this time, the venting channel 13 is completely blocked, preventing outside air from entering the ink bottle through the venting channel 13. In addition, the ink inside the ink bottle will not flow out from the venting channel 13 or the liquid outlet channel, thus effectively preventing ink leakage.

[0046] When the ink bottle is installed upside down in the printer's ink tank and connected to the ink filling port, the squeezing force generated by the ink filling port inside the printer will exert a force on the elastic plug 20, causing the elastic plug 20 to undergo a certain degree of elastic deformation. During this process, the sealing part 22 disengages from the second receiving cavity 131, the air guide channel 13 is opened, and outside air can enter the ink bottle through the air guide channel 13, balancing the air pressure inside and outside the ink bottle, ensuring that the ink can flow out smoothly from the liquid outlet channel, providing a stable ink supply to the printer. When the ink bottle is used up and removed from the printer's ink tank and placed upright or upside down again, the elastic plug 20 returns to its original shape under its own elastic force, and the sealing part 22 is once again tightly sealed in the second receiving cavity 131, resealing the air guide channel 13, preventing residual ink in the ink bottle from leaking out, thereby ensuring the reliability and stability of the leak-proof cap throughout the entire use process.

[0047] Reference Figure 2 as well as Figure 5In some embodiments of this utility model, the stopper body 21 is provided with a plurality of vent holes 211, which are distributed along the circumferential direction of the stopper body 21. In the leak-proof cap structure of this embodiment, based on the leak-proof cap structure mentioned in the foregoing embodiments, the vent holes 211 of the stopper body 21 are optimized to improve the cap performance. Similarly, the stopper body 21 is made of rubber material with good elasticity and flexibility, and its overall shape is cylindrical, which can be stably accommodated in the first accommodating cavity 11 of the cap body 10. The stopper body 21 is provided with a plurality of vent holes 211, which are evenly distributed along the circumferential direction of the stopper body 21. Specifically, depending on the size of the plug body 21, two or more vent holes 211 are carefully opened on its periphery. Each vent hole 211 is circular or square in shape and its size is precisely calculated to ensure that gas can pass through smoothly without affecting the structural strength and sealing performance of the plug body 21 due to excessively large hole diameter.

[0048] When the ink bottle is placed upright, the sealing part 22 of the elastic stopper 20 tightly seals the venting channel 13, and the liquid outlet channel of the stopper body 23 is also in a self-sealing state. At this time, although multiple vent holes 211 exist, ink will not leak from the vent holes 211 due to the ink pressure inside the bottle, the self-sealing liquid inlet channel, and the sealing effect of the sealing part 22. At the same time, these vent holes 211 will not affect the overall leak-proof effect of the bottle cap, because their connection with the outside is blocked by other sealing structures of the bottle cap. When the ink bottle is installed upside down in the printer ink tank and connected to the ink filling port, as the ink filling port inside the printer squeezes the stopper body 23, the sealing part 22 disengages from the venting channel 13, allowing the venting channel 13 to connect the inside and outside of the cap body 10. At this time, the multiple vent holes 211 begin to play an important role, connecting the inside of the stopper body 21 and the venting channel 13, allowing outside gas to enter the ink bottle and making the internal air pressure of the ink bottle equal. As ink flows out of the outlet channel, the air pressure inside the ink bottle gradually decreases. At this time, outside air can enter the area outside the stopper body 21 through the air guide channel 13 of the cap 10, and then quickly enter the ink bottle through multiple vent holes 211 evenly distributed around the periphery of the stopper body 21, thus balancing the air pressure inside and outside the ink bottle in a timely manner. This design of multiple vent holes 211 allows gas to enter the bottle more quickly and evenly, avoiding the problem of poor ink flow caused by air pressure imbalance, ensuring a continuous and stable supply of ink to the printer, and improving the efficiency and stability of printing. When the ink bottle is used up, removed from the printer ink tank, and placed upright again, the elastic stopper 20 returns to its original state, the sealing part 22 seals the air guide channel 13 again, and the outlet channel of the stopper body 23 also closes again. The connection between the multiple vent holes 211 and the outside is blocked, preventing residual ink in the ink bottle from leaking through the vent holes 211, thereby ensuring the reliability and practicality of the leak-proof cap throughout the entire use process.

[0049] Reference Figures 2 to 3 as well as Figure 5 In some embodiments of this utility model, a flange 212 is provided at the lower end of the plug body 21, and the outer peripheral side of the flange 212 is interference-fitted with the inner peripheral side of the cover body 10.

[0050] In this embodiment, the leak-proof bottle cap structure is based on the leak-proof bottle cap structure mentioned in the previous embodiment, and the connection method between the stopper body 21 and the cap body 10 is further optimized. The stopper body 21 is made of highly elastic and corrosion-resistant rubber material, and its overall shape is adapted to the first receiving cavity 11 of the cap body 10 so that it can be stably installed therein.

[0051] Specifically, a flange 212 is specially provided at the lower end of the stopper body 21. This flange 212 is integrally formed with the stopper body 21 and surrounds the lower end of the stopper body 21 in a circular shape. The flange 212 has a certain thickness and width, and its outer peripheral dimension is precisely designed to be slightly larger than the corresponding inner peripheral dimension of the cap 10. When the stopper body 21 is installed onto the cap 10, appropriate pressure is applied manually using a special installation tool to cause the flange 212 to elastically deform. With the continuous application of pressure, the outer peripheral side of the flange 212 gradually fits tightly against the inner peripheral side of the cap 10, forming an interference fit connection. This interference fit connection method has many advantages. On the one hand, it ensures a firm connection between the stopper body 21 and the cap 10. During normal use, handling, and installation of the ink bottle into the printer ink tank, the stopper body 21 will not easily loosen or fall off, ensuring the stability of the cap structure. On the other hand, this tight interference fit creates a good sealing effect. The outer periphery of the flange 212 is tightly pressed against the inner periphery of the cap 10, effectively preventing ink leakage from the connection between the stopper body 21 and the cap 10. Even when the ink bottle is inverted, the pressure of the ink, combined with the friction and sealing force generated by the interference fit, prevents ink from seeping out through the connection, further enhancing the leak-proof performance of the cap. When the stopper body 21 needs to be removed from the cap 10 for cleaning or replacement, the good elasticity of the silicone material allows the flange 212 to elastically recover its shape by pulling the stopper body 21 with appropriate force, thus enabling the stopper body 21 to be easily removed from the cap 10, facilitating the maintenance and use of the cap. This design, with the flange 212 at the lower end of the stopper body 21 and the interference fit connection with the inner periphery of the cap 10, effectively improves the sealing performance and reliability of the leak-proof cap while ensuring a firm connection.

[0052] In some embodiments of this utility model, reinforcing ribs 213 are provided on the inner side of the stopper body 21, and the length direction of the reinforcing ribs 213 extends along the axis of the elastic stopper 20. The leak-proof bottle cap of this embodiment, based on the overall structure of the leak-proof bottle cap of the aforementioned embodiments, further optimizes the design of the stopper body 21 by providing reinforcing ribs 213 on its inner side to enhance structural performance. The stopper body 21 is made of a plastic material with a certain degree of elasticity. This material not only has good flexibility but also good strength and chemical corrosion resistance, and can adapt to the usage environment of ink bottles. Reinforcing ribs 213 are provided on the inner side of the stopper body 21, and these reinforcing ribs 213 extend along the axis of the elastic stopper 20. Specifically, according to the size and structural characteristics of the stopper body 21, reinforcing ribs 213 are provided on the inner side of the stopper body 21 near the sealing part 22. The width and thickness of the reinforcing ribs 213 are precisely calculated to ensure sufficient strength support without excessively increasing the weight of the stopper body 21 or occupying too much internal space. The presence of the reinforcing ribs 213 significantly enhances the structural strength and stability of the stopper body 21. When the ink bottle is installed upside down in the printer's ink tank and connected to the ink filling port, the stopper body 21 will experience pressure changes of different directions and magnitudes during the ink outflow and the inflow of outside air. The reinforcing rib 213 enhances the ability of the stopper body 21 and the sealing part 22 to resist these dynamic pressure changes, ensuring that the stopper body 21 maintains a stable shape and structure under various operating conditions. This allows the vent 211 to function normally for gas exchange, and the ink outlet channel to continuously and stably supply ink. Furthermore, the design of the reinforcing rib 213 extending along the axis of the elastic stopper 20 also takes into account the force experienced by the elastic stopper 20 during installation and removal. During installation, the reinforcing rib 213 guides the stopper body 21 smoothly into the first receiving cavity 11 of the cap 10, reducing friction and jamming during installation. During removal, the reinforcing rib 213 provides a certain point of leverage, making it easier for operators to remove the stopper body 21 using tools or fingers, facilitating cleaning, maintenance, and replacement of the cap. This design, which features a reinforcing rib 213 extending along the axis of the elastic stopper 20 on the inner side of the stopper body 21, effectively improves the overall performance and reliability of the leak-proof cap.

[0053] According to a second aspect of the present invention, the container (not shown in the figure) includes a bottle body and a leak-proof cap according to any one of the first aspects described above. The leak-proof cap can be placed on the bottle body, and the container can be used to store printer ink.

[0054] This embodiment provides a container specifically designed for storing printer ink. The container mainly consists of two parts: a bottle body and a leak-proof cap. The bottle body is made of transparent high-density polyethylene (HDPE), a material with excellent chemical stability. It can withstand the corrosive effects of various chemical components in printer ink and will not react chemically with the ink, thus ensuring the stability of ink quality. Simultaneously, HDPE material also possesses high strength and toughness, making the bottle body less prone to breakage or damage during normal use, handling, and storage. The bottle body is designed in a common cylindrical shape, which not only facilitates gripping and pouring ink but also allows for the storage of more ink within a limited space. The wall thickness of the bottle body is precisely calculated to ensure sufficient strength without making the bottle too heavy, thus reducing cost and transportation difficulties. The bottle surface is smoothed to reduce the possibility of ink residue, and clear graduation markings are provided on the side of the bottle for users to accurately understand the remaining ink level.

[0055] The leak-proof cap is tightly fitted to the bottle body via a threaded connection (or a snap-fit ​​connection). The thread design is reasonable and precise, ensuring a firm connection between the cap and the bottle body. It will not loosen or fall off even when the container is subjected to vibration, shaking, or inversion, effectively preventing ink leakage. The cap's body 21 is made of rubber, possessing good elasticity and flexibility. Reinforcing ribs 213 on its inner side extend along the axis of the elastic stopper 20, enhancing the structural strength of the body 21 and making it less prone to deformation under ink pressure and external forces. Multiple vent holes 211 on the body 21 are evenly distributed along the circumference. When the ink bottle is inverted and used in a printer, they allow outside air to enter smoothly, balancing the air pressure and allowing ink to flow out smoothly; while preventing ink leakage when the bottle is placed upright or inverted when not in use. The elastic stopper 20 is made of rubber, possessing excellent elasticity and oil resistance. Its sealing part 22 can tightly seal the gas channel 13, and the sealing part 232 can keep the liquid outlet channel in a self-sealing state, further improving the leak-proof performance of the bottle cap. In addition, the flange 212 provided at the lower end of the stopper body 21 is interference-fitted with the inner circumference of the cap body 10, further enhancing the sealing effect of the bottle cap.

[0056] In practical use, after filling the printer ink bottle, the user tightens the leak-proof cap. At this point, the various parts of the cap work together to form a reliable sealing system, ensuring no ink leakage. When it's time to install ink into the printer's ink tank, the container is inverted. Under the pressure of the ink filling port inside the printer, the elastic stopper 20 deforms, the sealing part 22 disengages from the air passage 13, and the ink outlet opens, allowing ink to flow smoothly into the printer's ink tank. Simultaneously, outside air enters the bottle through the vent 211, balancing the air pressure and ensuring a continuous and stable ink supply. After use, the container is placed upright, and the elastic stopper 20 returns to its original shape, resealing and preventing residual ink leakage. This container, with its reasonable structure and reliable leak-proof performance, effectively meets the needs of storing printer ink.

[0057] In some embodiments of this utility model, the leak-proof cap and the bottle body are connected by threads, with the bottle mouth end abutting against the lower end face of the elastic stopper 20. The bottle body is still designed as a cylinder, with fine external threads at the bottle mouth. The thread pitch, tooth profile, and other parameters are precisely calculated and optimized to ensure tight engagement with the internal threads on the leak-proof cap. During manufacturing, high-precision molds and injection molding processes are used to ensure the dimensional accuracy and surface quality of the threads, allowing the cap and bottle body to smoothly connect when screwed together, and ensuring a firm and reliable connection. This effectively prevents the cap from loosening and falling off during use due to vibration, shaking, or inversion, thereby avoiding ink leakage. The cap body 10 of the leak-proof cap has internal threads that match the external threads of the bottle mouth. When the leak-proof cap is screwed onto the bottle body, as rotation proceeds, the bottle mouth gradually penetrates into the leak-proof cap. When the cap is tightened in place, the bottle mouth end of the bottle body abuts against the lower end face of the elastic stopper 20. The elastic stopper 20 is made of rubber, possessing excellent elasticity and flexibility. At this time, a certain pressure is applied to the lower end face of the elastic stopper 20 at the bottle mouth, causing a slight elastic deformation. This elastic deformation allows the sealing portion 22 of the elastic stopper 20 to fit more tightly against the corresponding sealing position of the gas guide channel 13, and the sealing portion 232 can more reliably keep the liquid outlet channel in a self-sealing state, further enhancing the sealing performance of the leak-proof cap.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A leak-proof bottle cap, characterized in that, include: A cover body, the inner side of which has a first receiving cavity and a mounting hole, the first receiving cavity communicating with the mounting hole, and the cover body further having an air guiding channel that connects the inner and outer sides of the cover body; and An elastic plug is disposed in the first accommodating cavity. The elastic plug is elastic and includes a plug body, a sealing part, and a plug body. The plug body can be accommodated in the first accommodating cavity. The plug body has a vent hole, and the inner side of the plug body communicates with the outer side of the plug body through the vent hole. The sealing part is used to block the air guiding channel. The plug body is disposed in the mounting hole and has a self-sealing liquid outlet channel for liquid flow.

2. The leak-proof bottle cap according to claim 1, characterized in that, The plug body includes a mounting part and a sealing part. The outer peripheral side of the mounting part is interference-fitted with the inner peripheral side of the mounting hole. The sealing part is located in the mounting part, and the liquid outlet channel is disposed in the sealing part.

3. A leak-proof bottle cap according to claim 2, characterized in that, The sealing part is an inwardly convex protrusion with a slit, which forms the liquid outlet channel.

4. A leak-proof bottle cap according to claim 1, characterized in that, The air guide channel has a second receiving cavity, which is located at one end of the air guide channel near the inner side of the cover, and the sealing part can be sealed and received in the second receiving cavity.

5. A leak-proof bottle cap according to any one of claims 1 to 4, characterized in that, The plug body is provided with a plurality of vent holes, which are distributed along the periphery of the plug body.

6. A leak-proof bottle cap according to any one of claims 1 to 4, characterized in that, The lower end of the plug body is provided with a flange, and the outer peripheral side of the flange is interference-fitted with the inner peripheral side of the cover body.

7. A leak-proof bottle cap according to any one of claims 1 to 4, characterized in that, The elastic plug is made of rubber material.

8. A leak-proof bottle cap according to any one of claims 1 to 4, characterized in that, The inner side of the plug body is provided with reinforcing ribs, and the length direction of the reinforcing ribs extends along the axis of the elastic plug.

9. A container, characterized in that, The container includes a bottle body and a leak-proof cap as described in any one of claims 1 to 8, the leak-proof cap being able to be placed on the bottle body, and the container being able to store printer ink.

10. A container according to claim 9, characterized in that, The leak-proof cap is connected to the bottle body by threads, and the bottle mouth end of the bottle body abuts against the lower end face of the elastic plug.

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