Quantitative liquid container

Abstract

The utility model discloses a kind of quantitative liquid outlet containers, it is related to packing article technical field, including bottle, ration plug, outer cover and inner cover, bottle includes the mutual connection of neck and bottle body, the inside of bottle body forms the cavity for storing content liquid, neck is equipped with the liquid outlet hole that with cavity penetrates;Ration plug is detachably installed in neck, ration plug is equipped with the liquid guide channel that is communicated with liquid outlet hole;Outer cover is detachably sleeved in the outside of ration plug upper end;Inner cover is detachably installed in ration plug upper end close to outer cover and located in the inside of outer cover, the upper inner wall of inner cover and the inner wall of outer cover form buffer space, the lower inner wall of inner cover and the inner wall of ration plug form ration space;Liquid guide channel extends towards inside ration space, the outlet of liquid guide channel forms certain amount liquid level line in ration space, certain amount liquid level line divides the volume of ration space equally.The technical scheme provided by the utility model solves the problem that existing container cannot realize the quantitative liquid outlet demand.

Description

Technical Field

[0001] This utility model relates to the field of packaging materials technology, and in particular to a quantitative liquid dispensing container. Background Technology

[0002] In modern daily life, squeeze-type packaging containers have become the mainstream packaging form in the fields of cosmetics, pharmaceuticals, personal care products, and food due to their advantages such as ease of use, good sealing, and portability. Typical squeeze-type packaging includes tubes (such as toothpaste tubes and facial cleanser tubes), bottles with squeeze pump necks (such as some serum bottles and medicine bottles), and flexible bags (such as some sauce packaging). Consumers can manually apply pressure to the container wall or pump neck to squeeze out the contents for use.

[0003] For tube-type packaging products, consumers squeeze the tube to expel the contents. The amount expelled depends entirely on the applied pressure, the duration of application, and the squeezing location. Hand strength varies from person to person, and even for the same person, the squeezing pressure is difficult to maintain consistently at different times and under different conditions (such as hand dryness, fatigue level). This results in a highly random and uncertain amount expelled each time, making quantitative control impossible. Utility Model Content

[0004] The main purpose of this invention is to propose a quantitative liquid dispensing container, which aims to solve the problem that existing containers cannot meet the quantitative liquid dispensing requirements.

[0005] To achieve the above objectives, the present invention provides a quantitative liquid dispensing container, which includes:

[0006] The bottle body includes a neck and a body connected to each other, the interior of the body forming a cavity for storing the contents, and the neck having an outlet hole communicating with the cavity;

[0007] A metering stopper is detachably installed on the bottleneck, and the metering stopper is provided with a liquid guiding channel communicating with the liquid outlet hole;

[0008] An outer cover, detachably fitted onto the outside of the upper end of the metering plug; and

[0009] The inner cover is detachably installed on the upper end of the metering plug near the outer cover and is located inside the outer cover. A buffer space is formed between the upper inner wall of the inner cover and the inner wall of the outer cover, and a metering space is formed between the lower inner wall of the inner cover and the inner wall of the metering plug. The liquid guiding channel extends into the metering space, and the outlet of the liquid guiding channel forms a certain liquid level line in the metering space, which divides the volume of the metering space equally.

[0010] In one embodiment, the metering stopper is provided with a metering column, the metering column protruding and extending toward one side of the inner cover, the liquid guiding channel is disposed through the interior of the metering column, the top of the metering column has an outlet communicating with the liquid guiding channel, and the horizontal line where the outlet is located is used as the metering liquid level line.

[0011] In one embodiment, the inner cap is provided with a deformable flexible part, the flexible part forms a buffer space between itself and the inner wall of the outer cap, and the flexible part forms a metering space between itself and the inner wall of the metering stopper. When the bottle body is squeezed, the flexible part protrudes toward one side of the buffer space and returns to its original position after the squeezing force is released.

[0012] In one embodiment, a first limiting part is provided on the outer wall of the bottleneck, and a second limiting part is provided inside the metering plug, with the first limiting part and the second limiting part abutting and cooperating.

[0013] In one embodiment, a biting tooth is selectively provided on the outer wall of the bottleneck and the inner wall of the metering plug, and a biting groove is selectively provided on the outer wall of the bottleneck and the inner wall of the metering plug, and the biting tooth engages in the biting groove.

[0014] In one embodiment, a plurality of engagement teeth are spaced apart along the outer periphery of the bottleneck, and a plurality of engagement grooves are spaced apart along the inner wall of the metering plug.

[0015] In one embodiment, the metering plug is further provided with a first sealing ring inside, the bottleneck is sleeved on the outside of the first sealing ring, and the first sealing ring is located at the end of the liquid outlet.

[0016] In one embodiment, the outer wall of the inner cover is provided with an exhaust groove, which is in communication with the buffer space.

[0017] In one embodiment, the inner cover has a second sealing ring inside, and the upper edge of the metering plug is fitted onto the outside of the second sealing ring.

[0018] In one embodiment, a first positioning protrusion is provided on one of the inner cover and the outer cover, and a first positioning recess is provided on the other of the inner cover and the outer cover, wherein the first positioning protrusion engages with the first positioning recess.

[0019] In one embodiment, a second positioning protrusion is provided on one of the inner cover and the outer cover, and a second positioning recess is provided on the other of the inner cover and the outer cover, wherein the second positioning protrusion engages with the second positioning recess.

[0020] The technical solution of this utility model involves setting a metering stopper, an inner cap, and an outer cap above the bottle body. The metering stopper is detachably installed on the outside of the bottle neck, the outer cap is detachably fitted onto the upper end of the metering stopper, and the inner cap is detachably placed inside the outer cap, positioned above the metering stopper. Furthermore, the metering stopper has a liquid guiding channel communicating with the dispensing hole. A metering space is formed between the inner wall of the metering stopper and the inner wall of the inner cap, and a buffer space is formed between the inner wall of the inner cap and the inner wall of the outer cap. By extending the liquid guiding channel into the metering space, the metering... The outlet of the liquid guiding channel forms a certain liquid level line, which divides the volume of the quantitative space equally. Thus, when the bottle is squeezed, the liquid in the cavity will flow into the quantitative space through the outlet hole of the bottle neck and then through the liquid guiding channel. The liquid above the quantitative liquid level line will flow back into the cavity through the outlet of the liquid guiding channel, while the liquid below the quantitative liquid level line will remain in the quantitative space. After opening the outer and inner caps, the quantitative solution can be poured out, ensuring that the amount of liquid dispensed each time is half of the volume of the quantitative space, thus achieving accurate quantitative dispensing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A cross-sectional view of a quantitative liquid dispensing container according to an embodiment of the present invention;

[0023] Figure 2 A cross-sectional view of the metering plug in one embodiment of the metering liquid dispensing container provided by this utility model;

[0024] Figure 3 A schematic diagram of the bottle body in another embodiment of the quantitative liquid dispensing container provided by this utility model;

[0025] Figure 4 A partial structural cross-sectional view of another embodiment of the quantitative liquid dispensing container provided by this utility model;

[0026] Figure 5 A schematic diagram of the extrusion process in another embodiment of the quantitative liquid dispensing container provided by this utility model;

[0027] Figure 6 A cross-sectional view of the inner cover in another embodiment of the quantitative liquid dispensing container provided by this utility model;

[0028] Figure 7A schematic diagram of the inner cover in another embodiment of the quantitative liquid dispensing container provided by this utility model;

[0029] Figure 8 A cross-sectional view of the outer cover of the quantitative liquid dispensing container provided by this utility model in another embodiment.

[0030] Explanation of icon numbers:

[0031] 100. Quantitative dispensing container; 1. Bottle body; 11. Bottle frame; 111. Cavity; 12. Bottle neck; 121. Dispensing hole; 122. First limiting part; 123. Engaging teeth; 2. Quantitative plug; 21. Quantitative column; 211. Liquid guiding channel; 212. Outlet; 22. Second limiting part; 23. Engaging groove; 24. First sealing ring; 25. Embedded part; 26. Quantitative part; 27. Mounting part; 3. Outer cover; 31. First positioning recess; 32. Second positioning recess; 4. Inner cover; 41. Flexible part; 42. Vent groove; 43. Second sealing ring; 44. First positioning protrusion; 45. Second positioning protrusion; 5. Buffer space; 6. Quantitative space; 7. Quantitative liquid level line.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] For tube-type packaging products, consumers squeeze the tube to expel the contents. The amount expelled depends entirely on the applied pressure, the duration of application, and the squeezing location. Hand strength varies from person to person, and even for the same person, the squeezing pressure is difficult to maintain consistently at different times and under different conditions (such as hand dryness, fatigue level). This results in a highly random and uncertain amount expelled each time, making quantitative control impossible.

[0037] This utility model proposes a quantitative liquid dispensing container.

[0038] Please see Figure 1 , Figure 4 and Figure 5 In one embodiment of this utility model, the quantitative liquid dispensing container 100 includes:

[0039] Bottle 1 includes a neck 12 and a body 11 connected to each other. The interior of the body 11 forms a cavity 111 for storing the contents. The neck 12 is provided with an outlet hole 121 that communicates with the cavity 111.

[0040] Metering stopper 2 is detachably installed on the neck of the neck 12. Metering stopper 2 is provided with a liquid guiding channel 211 that communicates with the liquid outlet 121.

[0041] Outer cover 3, detachably fitted onto the outside of the upper end of the metering stopper 2; and

[0042] The inner cover 4 is detachably installed on the upper end of the metering stopper 2 near the outer cover 3 and is located inside the outer cover 3. A buffer space 5 is formed between the upper inner wall of the inner cover 4 and the inner wall of the outer cover 3, and a metering space 6 is formed between the lower inner wall of the inner cover 4 and the inner wall of the metering stopper 2. The liquid guiding channel 211 extends into the metering space 6, and the outlet 212 of the liquid guiding channel 211 forms a certain amount of liquid level line 7 in the metering space 6. The metering liquid level line 7 divides the volume of the metering space 6 equally.

[0043] The technical solution of this utility model involves setting a metering stopper 2, an inner cap 4, and an outer cap 3 above the bottle body 1. The metering stopper 2 is detachably installed on the outside of the bottle neck 12, the outer cap 3 is detachably fitted onto the upper end of the metering stopper 2, and the inner cap 4 is detachably placed inside the outer cap 3, positioned above the metering stopper 2. Furthermore, the metering stopper 2 has a liquid guiding channel 211 communicating with the liquid outlet 121. A metering space 6 is formed between the inner wall of the metering stopper 2 and the inner wall of the inner cap 4, and a buffer space 5 is formed between the inner wall of the inner cap 4 and the inner wall of the outer cap 3. By extending the liquid guiding channel 211 into the metering space 6, the liquid guiding channel 2... The outlet 212 of bottle 11 forms a certain liquid level line 7, which divides the volume of the quantitative space 6 equally. Thus, when the bottle body 11 is squeezed, the liquid in the cavity 111 will flow into the quantitative space 6 through the outlet hole 121 of the neck 12 and then through the liquid guiding channel 211. The liquid above the quantitative liquid level line 7 will flow back into the cavity 111 through the outlet 212 of the liquid guiding channel 211, and the liquid below the quantitative liquid level line 7 will be retained in the quantitative space 6. After opening the outer cover 3 and the inner cover 4, the quantitative solution can be poured out, ensuring that the amount of liquid dispensed each time is half the volume of the quantitative space 6, thus achieving accurate quantitative dispensing.

[0044] Specifically, the metering stopper 2 can be made of materials such as polypropylene or polyethylene, which are not only easy to injection mold but also have good toughness and elasticity. The metering stopper 2 can be a hollow, cylindrical structure, and is divided into an insert 25, a metering part 26, and a mounting part 27 from top to bottom. Among them, the insert 25 has the smallest diameter and is the basis for connecting the metering stopper 2 to the outer cover 3. The outer side of the insert 25 can be provided with a snap-fit ​​structure (such as an annular rib or an L-shaped groove) or threads for connecting to the outer cover 3, so as to achieve a detachable connection with the outer cover 3. In this embodiment, the outer wall of the insert 25 is provided with external threads, which are threaded to the internal threads on the inner wall of the outer cover 3; the metering part 26 can be similar to... The funnel-shaped structure has a diameter that gradually increases from the side near the mounting part 27 to the side near the embedding part 25. A metering space 6 is formed between the inner wall of the metering part 26, part of the inner wall of the embedding part 25, and the inner wall of the metering plug 2. A liquid guiding channel 211 extends inside the metering part 26, and the outlet 212 of the liquid guiding channel 211 is located close to the embedding part 25. The metering liquid level line 7 is also located close to the embedding part 25. The mounting part 27 has the largest diameter and is fitted onto the outside of the bottleneck 12 via a snap-fit ​​or threaded connection. In practice, the user can adjust the volume of the liquid below the metering dispensing line in the metering space 6 by changing the shape and size of the metering part 26 in the metering plug 2 and the length of the liquid guiding channel 211, thereby changing the dispensing volume each time.

[0045] It should be noted that, please refer to Figure 4 and Figure 8The outer cover 3 can be a cap-shaped body with internal threads on the inner wall of the end near the metering stopper 2. These threads connect to the external threads on the outer wall of the insertion portion 25 at the upper end of the metering stopper 2, allowing for tightening and opening via rotation. Optionally, a tear-off ring can be provided at the open end of the bottom of the outer cover 3. This tear-off ring is connected to the side wall body via multiple easily tearable "bridge points." When the user unscrews the outer cover 3 for the first time, the bridge points break, leaving the anti-theft ring on the insertion portion 25 of the metering stopper 2, preventing liquid leakage caused by accidental opening of the outer cover 3. The inner cover 4 can be a flat cylindrical structure with retaining rings at the bottom and top for engaging with the upper end of the metering stopper 2 and the inner wall of the outer casing.

[0046] Please see Figure 5 The specific dispensing process is as follows: When the bottle body 11 is squeezed, the liquid inside the cavity 111 flows into the metering space 6 under pressure through the liquid guiding channel 211. When the user releases the bottle body 11, a negative pressure is generated inside the cavity 111. If the liquid level in the metering space 6 is higher than the outlet 212 of the liquid guiding channel 211 (i.e., the metering liquid level line 7), the excess liquid will automatically flow back into the cavity 111 of the bottle body 11 due to the internal and external pressure difference, until the liquid level accurately falls back to the position of the metering liquid level line 7. This metering liquid level line 7 divides the volume of the metering space 6 evenly, thus ensuring that the amount of liquid dispensed each time is half the volume of the metering space 6. In this way, no user needs to observe the scale or make any judgment. The metered dispensing is achieved entirely by the structural layout of the metering stopper 2, eliminating the problem of inaccurate dispensing caused by hand tremors, viewing angle deviations, or lack of experience.

[0047] In the embodiments of this utility model, please refer to Figure 2 The metering stopper 2 is provided with a metering column 21, which protrudes and extends towards one side of the inner cover 4. A liquid guiding channel 211 is provided through the interior of the metering column 21. An outlet 212 communicating with the liquid guiding channel 211 is opened at the top of the metering column 21, and the horizontal line where the outlet 212 is located is used as the metering liquid level line 7. In this embodiment, the metering column 21 protrudes from the interior of the metering stopper 2. It can be a hollow columnar structure extending upward from the bottom of the metering part 26, forming a through liquid guiding channel 211 inside. The liquid level line where the outlet 212 of the liquid guiding channel 211 is located is used as the metering line, so that the metered volume no longer depends on the pressure of the user squeezing the bottle body 11, but is determined by the absolute physical height of the outlet 212 of the metering column 21, ensuring that the liquid volume dispensed each time is half of the volume of the metering space 6.

[0048] In the embodiments of this utility model, please refer to Figure 6The inner cap 4 has a deformable flexible part 41, forming a buffer space 5 between the flexible part 41 and the inner wall of the outer cap 3, and a metering space 6 between the flexible part 41 and the inner wall of the metering stopper 2. When the bottle body 11 is squeezed, the flexible part 41 protrudes towards the buffer space 5 and returns to its original position after the pressure is released. The flexible part 41 can be directly molded into the center of the inner cap 4 using thermoplastic elastomer or silicone. The inner cap 4 can be made of polyethylene or polypropylene. The flexible part 41 and the inner cap 4 are processed into one piece through a secondary injection molding process to achieve a seamless connection and improve sealing. Specifically, when the user squeezes the bottle body 11, the metering space 6 receives gas pressure, causing the flexible part 41 of the inner cap 4 to bulge upwards, allowing the liquid in the cavity 111 to smoothly enter the metering space 6. Only one or two squeezes are needed to complete the extrusion. This container is suitable for extrusion packaging of various pharmaceuticals, cosmetics, and personal care products with low viscosity.

[0049] In the embodiments of this utility model, please refer to Figure 2 and Figure 3 The outer wall of the bottleneck 12 is provided with a first limiting part 122, and the inside of the metering plug 2 is provided with a second limiting part 22, and the first limiting part 122 and the second limiting part 22 abut against each other. The first limiting part 122 can be an annular rib provided on the outer periphery of the bottleneck 12, and the annular rib is a ring of protrusions integrally formed with the bottleneck 12; correspondingly, the second limiting part 22 is an annular groove (a ring of inwardly recessed groove) provided on the inner wall of the metering plug 2, which is used to cooperate with the annular rib. In other embodiments, the first limiting part 122 can also be an intermittent protrusion or protrusion, and multiple independent rectangular or arc-shaped protrusions are provided at equal intervals on the outer peripheral surface of the bottleneck 12, which can provide a more clear "key" cooperation when performing circumferential anti-rotation with the metering plug 2; correspondingly, the second limiting part 22 is an inwardly recessed keyway or notch provided on the inner peripheral sidewall of the metering plug 2. It can be understood that the position of the inwardly recessed keyway or notch corresponds to the position of the intermittently recessed protrusion or protrusion on the bottleneck 12, and the number is the same. In another embodiment, the first limiting part 122 and the second limiting part 22 are both protruding annular or semi-circular steps. After the metering plug 2 is placed on the outer periphery of the bottleneck 12, the first limiting part 122 and the second limiting part 22 are in rigid contact with each other at their upper and lower ends to achieve axial limiting of the bottleneck 12 and the metering plug 2.

[0050] In the embodiments of this utility model, please refer to Figure 2 and Figure 3A meshing tooth 123 is selectively provided on one of the outer wall of the bottleneck 12 and the inner wall of the metering stopper 2, and a meshing groove 23 is selectively provided on the other of the outer wall of the bottleneck 12 and the inner wall of the metering stopper 2, with the meshing tooth 123 fitting within the meshing groove 23. A convex tooth with a tapered tip can be provided on the outer wall of the bottleneck 12, and a groove with a "V" or "U" shaped cross-section can be provided on the inner wall of the metering stopper 2. The circumferential rotation of the metering stopper 2 is restricted by the engagement of the convex tooth and the groove. Alternatively, a convex tooth with a tapered tip can be provided on the inner wall of the metering stopper 2, and a groove can be provided on the outer wall of the bottleneck 12; the specific configuration can be determined according to actual needs.

[0051] In the embodiments of this utility model, please refer to Figure 2 and Figure 3 Multiple bite teeth 123 are spaced apart along the outer circumference of the bottleneck 12, and multiple bite grooves 23 are spaced apart along the inner wall of the metering plug 2. In this embodiment, multiple independent, raised bite teeth 123 are provided at equal or unequal intervals along the circumferential direction above the first limiting protrusion on the outer wall of the bottleneck 12, such as six, eight, or twelve. The bite teeth 123 can be rectangular, trapezoidal, semi-circular, or triangular protrusions. Correspondingly, the bite grooves 23 are grooves that match the shape and number of bite teeth 123. It should be noted that the depth of the bite grooves 23 is slightly greater than the height of the bite teeth 123 to ensure that the bite teeth 123 can be fully embedded to form a reliable "interference" or "zero clearance" fit.

[0052] In the embodiments of this utility model, please refer to Figure 2 and Figure 4 The metering stopper 2 is further provided with a first sealing ring 24 inside. The bottleneck 12 is fitted over the outside of the first sealing ring 24, and the first sealing ring 24 is located at the end of the liquid outlet 121. The first sealing ring 24 can be a convex ring provided on the mounting part 27 of the metering stopper 2 facing the bottleneck 12. By fitting it into the opening of the liquid outlet 121, the sealing performance between the liquid outlet 121 and the mounting part 27 can be improved, ensuring that the liquid in the liquid outlet 121 can only flow into the liquid guiding channel 211 and will not penetrate to the outside of the metering stopper 2. The first sealing ring 24 can be made of an elastic material (such as silicone, thermoplastic polyurethane, etc.), and its outer diameter is slightly larger than the diameter of the liquid outlet 121 to form an interference fit.

[0053] In the embodiments of this utility model, please refer to Figure 7The outer wall of the inner cap 4 is provided with an exhaust groove 42, which communicates with the buffer space 5. The exhaust groove 42 can be multiple grooves spaced apart on the periphery of the outer wall of the inner cap, with the groove openings facing the inner wall of the outer cap 3 and communicating with the buffer space 5. The grooves can be straight, spiral, or other shaped grooves, which are not limited here. In this way, when the bottle body 11 is squeezed, the liquid contents in the cavity 111 enter the metering space 6, and the pressure in the metering space 6 increases, pushing the flexible part 41 on the inner cap 4 to bulge outward. At this time, the gas in the buffer space 5 can flow to the outside through the gap between the exhaust groove 42 and the outer cap 3, so that the liquid in the cavity 111 can be continuously squeezed into the metering space 6 until the pressure balance is reached. When the extrusion volume exceeds half of the volume of the metering space 6, the excess liquid can flow back into the bottle body 11 through the liquid guiding channel 211. At the same time, the flexible part 41 returns to its original state. At this time, the liquid in the metering space 6 is exactly half of its volume. After opening the outer cover 3 and the inner cover 4 in sequence, the liquid in the metering space 6 can be poured out.

[0054] In the embodiments of this utility model, please refer to Figure 6 and Figure 7 The inner cover 4 has a second sealing ring 43 inside, and the upper edge of the metering stopper 2 is fitted onto the outside of the second sealing ring 43. The second sealing ring 43 can be a convex ring on the inner cover 4 with its bottom facing the upper end of the metering stopper 2. Fitting it inside the upper edge of the metering stopper 2 improves the sealing between the metering stopper 2 and the inner cover 4, ensuring that the liquid in the metering space 6 does not overflow into the buffer space 5. Optionally, the upper edge of the metering stopper 2 (i.e., its top edge) can be a smooth cylindrical surface or a rounded surface with a small chamfer. The outer diameter of the second sealing ring 43 is slightly larger than the inner diameter of the upper end of the metering stopper 2 to form an interference fit. During assembly, the second sealing ring 43 on the inner cover 4 is pressed in or screwed into the metering stopper 2. The second sealing ring 43 can be made of an elastic material (such as silicone, thermoplastic polyurethane, etc.).

[0055] In the embodiments of this utility model, please refer to Figures 6 to 8 A first positioning protrusion 44 is provided on one of the inner cover 4 and the outer cover 3, and a first positioning recess 31 is provided on the other of the inner cover 4 and the outer cover 3, with the first positioning protrusion 44 fitting into the first positioning recess 31. The first positioning protrusion 44 can be an annular boss provided on the outer peripheral wall of the inner cover 4 or the inner peripheral wall of the outer cover 3. Correspondingly, the first positioning recess 31 can be an annular groove provided on the inner peripheral wall of the outer cover 3 or the outer peripheral wall of the inner cover 4. When the boss is embedded in the groove, the inner cover 4 can be stably fixed inside the outer cover 3, improving the connection strength between the components.

[0056] In the embodiments of this utility model, please refer to Figures 6 to 8A second positioning protrusion 45 is provided on one of the inner cover 4 and the outer cover 3, and a second positioning recess 32 is provided on the other of the inner cover 4 and the outer cover 3, with the second positioning protrusion 45 fitting into the second positioning recess 32. The second positioning protrusion 45 can be a buckle or step provided on the outer peripheral wall of the inner cover 4 or the inner peripheral wall of the outer cover 3. Correspondingly, the second positioning recess 32 can be a groove and a receiving groove provided on the inner peripheral wall of the outer cover 3 or the outer peripheral wall of the inner cover 4. The second positioning recess 32 can be a groove with a chamfered end. When the outer cover 3 is pressed into the inner cover 4, the second positioning protrusion 45, guided by the chamfer, is more easily engaged in the groove, achieving axial locking and preventing the inner and outer covers 3 from separating or moving axially.

[0057] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A quantitative liquid dispensing container, characterized in that, The quantitative liquid dispensing container includes: The bottle body includes a neck and a body connected to each other, the interior of the body forming a cavity for storing the contents, and the neck having an outlet hole communicating with the cavity; A metering stopper is detachably installed on the bottleneck, and the metering stopper is provided with a liquid guiding channel communicating with the liquid outlet hole; An outer cover, detachably fitted onto the outside of the upper end of the metering plug; and The inner cover is detachably installed on the upper end of the metering plug near the outer cover and is located inside the outer cover. A buffer space is formed between the upper inner wall of the inner cover and the inner wall of the outer cover, and a metering space is formed between the lower inner wall of the inner cover and the inner wall of the metering plug. The liquid guiding channel extends into the metering space, and the outlet of the liquid guiding channel forms a certain liquid level line in the metering space, which divides the volume of the metering space equally.

2. The quantitative dispensing container as described in claim 1, characterized in that, The metering stopper is provided with a metering column, which protrudes and extends toward one side of the inner cover. The liquid guiding channel is disposed through the interior of the metering column. The top of the metering column has an outlet communicating with the liquid guiding channel, and the horizontal baseline where the outlet is located is used as the metering liquid level line.

3. The quantitative liquid dispensing container as described in claim 1, characterized in that, The inner cap is provided with a deformable flexible part, and the buffer space is formed between the flexible part and the inner wall of the outer cap. The metering space is formed between the flexible part and the inner wall of the metering stopper. When the bottle body is squeezed, the flexible part protrudes towards one side of the buffer space and returns to its original position after the squeezing force is released.

4. The quantitative dispensing container as described in claim 1, characterized in that, The outer wall of the bottleneck is provided with a first limiting part, and the inside of the metering plug is provided with a second limiting part, and the first limiting part and the second limiting part abut against each other.

5. The quantitative liquid dispensing container as described in claim 1, characterized in that, Engaging teeth are selectively provided on one of the outer wall of the bottleneck and the inner wall of the metering plug, and engaging grooves are selectively provided on the other of the outer wall of the bottleneck and the inner wall of the metering plug, with the engaging teeth engaging within the engaging grooves.

6. The quantitative dispensing container as described in claim 5, characterized in that, The bite teeth are provided in multiple circumferentially along the outer periphery of the bottleneck, and the bite grooves are provided in multiple circumferentially along the inner wall of the metering plug.

7. The quantitative dispensing container as described in claim 1, characterized in that, The metering plug is further provided with a first sealing ring inside, the bottleneck is sleeved on the outside of the first sealing ring, and the first sealing ring is located at the end of the liquid outlet.

8. The quantitative dispensing container as described in claim 1, characterized in that, The outer wall of the inner cover is provided with an exhaust groove, which is connected to the buffer space. And / or, The inner cover has a second sealing ring inside, and the upper edge of the metering plug is sleeved on the outside of the second sealing ring.

9. The quantitative dispensing container as described in any one of claims 1 to 8, characterized in that, A first positioning protrusion is provided on one of the inner cover and the outer cover, and a first positioning recess is provided on the other of the inner cover and the outer cover, wherein the first positioning protrusion is fitted into the first positioning recess.

10. The quantitative dispensing container as described in claim 9, characterized in that, A second positioning protrusion is provided on one of the inner cover and the outer cover, and a second positioning recess is provided on the other of the inner cover and the outer cover, wherein the second positioning protrusion is fitted into the second positioning recess.

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