Three-cavity soft tube synchronous liquid outlet flip-top bottle

Abstract

The utility model relates to packing container technical field, concretely is a kind of three-cavity hose synchronous liquid outlet flip cap bottle, including flip cap subassembly and outer hose bottle body, outer hose bottle body contains center hose subassembly, middle layer hose subassembly and outer layer hose subassembly, annular diaphragm isolation is set between adjacent hoses, flip cap subassembly contains upper cover, lower cover and flexible hinge, lower cover is equipped with three layers concentric liquid outlet and sealing sink, liquid outlet pipe neck is coaxial positioning by positioning card station and positioning card slot, outer layer liquid outlet pipe neck is connected with lower cover screw thread and is limited through rectangular boss groove circumferentially, when cover, flip cap sealing ring convex and sealing element interference fit. The utility model three layers hose and annular diaphragm formed three independent sealed chambers of integrally injection moulded, realize synchronous accurate liquid outlet by concentric arrangement three layers hose, liquid outlet pipe neck, sealing sink and liquid outlet, give consideration to component stability and use convenience;Annular diaphragm, level sealed unit's synergism realizes multilayer sealing structure, improves sealing reliability.

Description

Technical Field

[0001] This utility model relates to the field of packaging container technology, and in particular to a three-chamber flexible tube synchronous liquid dispensing flip-top bottle. Background Technology

[0002] In everyday consumer and industrial applications, many scenarios require the separate storage and simultaneous use of three liquid components. Examples include 3-in-1 shampoos that cleanse, nourish, and repair; compound seasonings containing oils, sauces, and vinegars in the food industry; and multi-component topical disinfectants in the pharmaceutical field. The core requirements for these products are: to prevent chemical reactions or performance degradation between the different components during storage; to ensure rapid and uniform mixing during use; and to facilitate easy operation. In existing technologies, three-cavity liquid packaging containers mainly suffer from the following defects: asynchronous liquid dispensing from multiple cavities, cumbersome operation, traditional multi-cavity packaging often has independent cavities and independent liquid outlet structures, requiring each liquid outlet channel to be squeezed or opened separately during use, making synchronous liquid dispensing impossible; poor reliability of chamber isolation and sealing, existing multi-cavity tubing often uses assembled cavities, with the isolation between adjacent cavities relying on adhesive layers or sealing rings, which are prone to adhesive failure and sealing ring aging during long-term storage or squeezing use, leading to cross-contamination of different components, affecting product performance and even causing safety hazards; poor compatibility between the flip-top and the multi-cavity liquid outlets, existing flip-top multi-cavity packaging often has a single sealing surface, which cannot adapt to the precise sealing requirements of multiple concentric liquid outlets, and when the cap is closed, local sealing failure and leakage are prone to occur, and after opening the cap, the correspondence between the liquid outlet and the cavity is easily misaligned due to assembly deviations, resulting in obstructed liquid dispensing or uneven mixing of components. Utility Model Content

[0003] To address the issues of asynchronous liquid dispensing from multiple cavities, cumbersome operation, poor reliability of chamber isolation and sealing, and poor compatibility between the flip cap and the multi-cavity liquid outlet in three-cavity liquid packaging containers, this utility model provides a three-cavity flexible tube synchronous liquid dispensing flip-cap bottle. The technical solution adopted by this utility model to solve the above problems is: a three-cavity flexible tube synchronous liquid dispensing flip-cap bottle, which includes a flip cap assembly and an outer flexible tube bottle body. The outer flexible tube bottle body is integrally injection molded and includes a central flexible tube, a middle flexible tube, and an outer flexible tube. An annular diaphragm is provided between adjacent flexible tube layers for complete isolation and sealing. The flip-top assembly is connected to the outer flexible tube bottle body and includes an upper cover, a lower cover, and a flexible hinge. The flexible hinge is integrally injection molded, and its two ends are respectively connected to the upper cover and the lower cover. The inner side of the upper cover is provided with a flip-top sealing ring protrusion. The inner wall contour of the flip-top sealing ring protrusion matches the outer contour of the three liquid outlets of the lower cover. The lower cover is provided with a first liquid outlet, a second liquid outlet, and a third liquid outlet, each corresponding to one of the three independent chambers. The first liquid outlet is a central circular hole, the second liquid outlet is a middle annular hole surrounding the first liquid outlet, and the third liquid outlet is an outer annular hole surrounding the second liquid outlet. The three are arranged concentrically. The inner side of the lower cover is provided with a concentric sealing groove and a layered elastic seal. The layered elastic seal is embedded in the concentric sealing groove.

[0004] The aforementioned three-chamber flexible tube synchronous dispensing flip-top bottle has a central dispensing neck at the upper end of the central tube, a middle dispensing neck at the upper end of the middle tube, and an outer dispensing neck at the outer tube. The central, middle, and outer dispensing necks communicate with the innermost, middle, and outermost chambers, respectively. The dispensing necks are integrally injection molded with the tubes. Compared to open end faces without necks, this reduces the risk of contact between liquids in adjacent chambers near the dispensing port. The integral injection molding of the dispensing necks with the outer tube bottle body eliminates the need for additional components such as diversion pipes and valves. Compared to existing complex multi-chamber packaging, this reduces production processes and the number of parts, lowering production costs and assembly errors. The neck structure guides the liquid flow direction, preventing irregular overflow from the tube end face. Combined with the dispensing port of the flip-top assembly, this allows for concentrated liquid flow, improving ease of use.

[0005] The aforementioned three-chamber flexible tube synchronous dispensing flip-top bottle has a first positioning platform on the outer wall of the central dispensing tube neck, a first positioning groove on the inner wall of the middle dispensing tube neck and a second positioning platform on its outer wall, and a second positioning groove on the inner wall of the outer dispensing tube neck and a thread on its outer wall. The first positioning platform engages with the first positioning groove, the second positioning platform engages with the second positioning groove, and the outer wall of the outer dispensing tube neck is threaded to the inner side of the lower cap. The engagement of the positioning platform and the positioning groove forms a radial limiting structure, forcing the central dispensing tube neck, the middle dispensing tube neck, and the outer dispensing tube neck to maintain a strictly coaxial arrangement.

[0006] The aforementioned three-chamber tubing synchronous dispensing flip-top bottle has the same thread lead on the inner side of the lower cap as the outer thread lead on the outer wall of the outer dispensing tube neck, and the thread direction is right-handed. A rectangular circumferential positioning boss is provided on the upper end face of the outer dispensing tube neck, and a matching rectangular positioning groove is provided on the lower end face of the lower cap. When the lower cap is screwed 360°±10° relative to the outer dispensing tube neck, the positioning boss engages with the positioning groove. At this time, the coaxiality error between the first, second, and third dispensing ports of the lower cap and the upper openings of the central dispensing tube neck, middle dispensing tube neck, and outer dispensing tube neck is ≤0.1mm. The gap between the three-layer sealing groove and the upper opening of the corresponding liquid outlet neck is ≤0.05mm. The circumferential positioning structure of a single boss and a single groove provides a clear termination position for thread engagement. When the boss is engaged in the groove, the lower cover cannot continue to be screwed on, directly locking the circumferential position. Compared with the arc positioning, the rectangular structure has no circumferential sliding space, ensuring the positioning consistency of each assembly. The engagement structure of the rectangular positioning boss and the groove can effectively resist the vibration and impact force of opening and closing the cover during use, avoiding the loosening of the threads and circumferential displacement of the lower cover due to long-term use, ensuring the long-term stability of positioning accuracy and sealing effect.

[0007] The aforementioned three-chamber tubing synchronous dispensing flip-top bottle features two annular diaphragms, one positioned between the central tubing and the middle tubing, and the other between the middle tubing and the outer tubing. These annular diaphragms and their corresponding two tubing layers are injection-molded together to form an integral structure. The thickness of the annular diaphragm is 0.15–0.3 mm. Compared to traditional adhesive or assembled diaphragms, this eliminates gaps between the diaphragm and the tubing, upgrading the sealing from surface sealing to a one-piece seal. This completely prevents liquid mixing at the diaphragm joints, making it particularly suitable for long-term storage or frequent compression scenarios. The seamless, one-piece diaphragm disperses stress during compression, reducing material fatigue cracking caused by repeated compression and significantly extending the lifespan of the outer tubing bottle. It is especially suitable for daily chemical and food packaging applications requiring frequent use.

[0008] The aforementioned three-cavity tubing synchronous dispensing flip-top bottle features a concentric sealing groove with three layers: a central sealing groove, a middle sealing groove, and an outer sealing groove. These three layers are concentrically arranged and respectively fit the upper openings of the central, middle, and outer dispensing necks. The inner wall of the sealing groove provides radial restraint for the embedded seal, preventing radial displacement of the seal during dispensing or opening / closing the cap. This ensures the seal remains in contact with the upper opening of the dispensing neck, solving the sealing failure problem caused by seal misalignment in non-layered sealing grooves. The dispensing neck provides a sealing contact surface, and the sealing groove provides sealing installation positioning. Together, they allow the seal to be quickly and accurately embedded in the preset position without additional adjustment, solving the problems of difficult assembly and positioning and large errors in existing multi-cavity packaging seals.

[0009] The aforementioned three-chamber hose-operated flip-top bottle with synchronized liquid dispensing features a multi-layered elastic seal comprising three independent sealing units: a central sealing gasket, a middle sealing gasket, and an outer sealing gasket. These three sealing units are respectively embedded within the central sealing groove, the middle sealing groove, and the outer sealing groove. The sealing units are made of PP elastic material, forming a one-to-one sealing link between the tube neck, the groove, and the sealing gasket. Each chamber's seal is independently effective, avoiding the risk of liquid cross-contamination caused by a single-position seal failure in an integrated seal. This significantly improves sealing redundancy. The independent sealing units are isolated by the sidewall of the groove, preventing direct contact and completely blocking the possibility of liquid penetration across cavities within the seal. This design is particularly suitable for the isolated storage of liquids with different compositions, solving the problem of potential liquid cross-contamination issues caused by gaps in existing multi-cavity packaging seals that are easily left in one-piece molding.

[0010] The aforementioned three-chamber hose synchronous dispensing flip-top bottle has a 0.1-0.2mm interference fit between the lower end face of the flip-top sealing ring and the upper end face of the layered elastic seal. When the top cap is closed, the flip-top sealing ring presses against the three sealing units, ensuring that the sealing units tightly fit against the upper opening end face of the corresponding dispensing tube neck. The 0.1-0.2mm range allows the seal to undergo sufficient elastic deformation to fill all potential gaps, while also controlling the closing force within an acceptable range for the user. This solves the contradiction of traditional non-quantitative interference seal designs that either leak or require excessive force to open and close. When the cap is closed, a single pressing action acts synchronously on the center, middle, and outer sealing gaskets, ensuring that the pressure on the three sealing units is consistent.

[0011] As described above, the beneficial effects of the three-chamber flexible tube synchronous dispensing flip-top bottle provided by this utility model are as follows: the three chambers are independently isolated and dispensed synchronously and accurately, taking into account both component stability and ease of use. The three-layer flexible tube and the annular diaphragm, which are integrally injection molded, form three independent sealed chambers, completely blocking the cross-mixing path of liquids with different components and avoiding performance degradation caused by component reactions during storage. At the same time, the three-layer flexible tube, the dispensing neck, the sealing groove, and the dispensing port are all arranged concentrically. With the neck snap-fit ​​positioning and the precise limiting of the threads and circumferential bosses, it is ensured that when the outer flexible tube is squeezed, the liquid in the three chambers is discharged synchronously through the dedicated dispensing neck. The multiple sealing structures work together to greatly improve the sealing reliability. The annular diaphragm and the flexible tube are integrally fused to eliminate connection gaps. The layered sealing groove and the independent sealing unit form a one-to-one seal to prevent cross-cavity penetration. The interference fit allows the sealing element to deform fully and fill the tiny gaps in the sealing surface, so that even if the product is inverted or vibrated, leakage can be prevented. Attached Figure Description

[0012] 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 these drawings without creative effort.

[0013] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a schematic diagram of the unfolded flip cover of this utility model; Figure 3 This is a cross-sectional view of the flip cover of this utility model; Figure 4 This is a top view of the flip cover of this utility model; Figure 5 This is a partial cross-sectional view of the liquid outlet neck and sealing structure in this utility model.

[0014] Summary of figure labels and their descriptions: 1. Flip-top assembly, 11. Top cover, 111. Flip-top sealing ring protrusion, 12. Bottom cover, 13. Flexible hinge, 121. First liquid outlet, 122. Second liquid outlet, 123. Third liquid outlet, 124. Central sealing groove, 125. Middle layer sealing groove, 126. Outer layer sealing groove, 127. Rectangular positioning groove, 13. Flexible hinge, 2. Central hose assembly, 21. Central liquid outlet neck, 22. First positioning platform, 3. Middle layer hose assembly, 31. Middle layer liquid outlet neck, 32. Second positioning platform, 33. First positioning groove, 34. First annular diaphragm, 4. Outer hose assembly, 41. Outer layer liquid outlet neck, 42. Second positioning groove, 43. Rectangular circumferential positioning boss, 44. Second annular diaphragm, 5. Layered elastic seal, 51. Central sealing gasket, 52. Middle layer sealing gasket, 53. Outer layer sealing gasket. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0016] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there may be an intervening element. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0017] A three-chamber hose synchronous liquid dispensing flip-top bottle includes a flip-top assembly 1 and an outer hose bottle body. The outer hose bottle body is integrally injection molded and includes a central hose assembly 2, a middle hose assembly 3 and an outer hose assembly 4. An annular diaphragm is provided between adjacent hose layers to completely isolate and seal them. The flip-top assembly 1 is connected to the outer tube bottle body and includes an upper cover 11, a lower cover 12, and a flexible hinge 13. The flexible hinge 13 is integrally injection molded and its two ends are connected to the upper cover 11 and the lower cover 12 respectively. The inner side of the upper cover 11 is provided with a flip-top sealing ring protrusion 111. The inner wall contour of the flip-top sealing ring protrusion 111 matches the outer contour of the three liquid outlets of the lower cover 12. The lower cover 12 is provided with a first liquid outlet 121, a second liquid outlet 122, and a third liquid outlet 123 corresponding to the three independent chambers. The first liquid outlet 121 is a central circular hole, the second liquid outlet 122 is a middle annular hole surrounding the first liquid outlet 121, and the third liquid outlet 123 is an outer annular hole surrounding the second liquid outlet 122. The three are arranged concentrically. The inner side of the lower cover 12 is provided with a concentric sealing groove and a layered elastic seal 5. The layered elastic seal 5 is embedded in the concentric sealing groove.

[0018] Please refer to Figure 1The upper end of the central hose assembly 2 is provided with a central outlet neck 21, the upper end of the middle hose assembly 3 is provided with a middle outlet neck 31, and the outer hose assembly 4 is provided with an outer outlet neck 41. The central outlet neck 21, the middle outlet neck 31, and the outer outlet neck 41 are respectively connected to the innermost chamber, the middle chamber, and the outermost chamber. The outlet neck and the hose are integrally injection molded. Compared with the open end face without a neck, the risk of contact between liquids in adjacent chambers near the outlet is reduced. The outlet neck and the outer hose bottle are integrally injection molded, eliminating the need for additional components such as diversion pipes and valves. Compared with existing complex multi-chamber packaging, the production process and the number of parts are reduced, production costs and assembly errors are lowered. The neck structure can guide the direction of liquid flow, preventing liquid from overflowing irregularly from the end face of the hose. Combined with the outlet of the flip-top assembly 1, the liquid can flow out in a concentrated manner, improving the convenience of use.

[0019] Please refer to Figure 5 The outer wall of the central outlet neck 21 is provided with a first positioning plate 22, the inner wall of the middle outlet neck 31 is provided with a first positioning groove 33, and its outer wall is provided with a second positioning plate 32. The inner wall of the outer outlet neck 41 is provided with a second positioning groove 42, and its outer wall is provided with threads. The first positioning plate 22 is engaged with the first positioning groove 33, the second positioning plate 32 is engaged with the second positioning groove 42, and the outer wall of the outer outlet neck 41 is threaded to the inner side of the lower cover 12. The engagement of the positioning plate and the positioning groove forms a radial limiting structure, which forces the central outlet neck 21, the middle outlet neck 31 and the outer outlet neck 41 to maintain a strictly coaxial arrangement.

[0020] Please refer to Figure 1 and Figure 2The inner thread of the lower cover 12 has the same lead as the thread on the outer wall of the outer liquid outlet neck 41, and the thread direction is right-handed. A rectangular circumferential positioning boss 43 is provided on the upper end face of the outer liquid outlet neck 41, and a matching rectangular positioning groove 127 is provided on the lower end face of the lower cover 12. After the lower cover 12 is screwed 360°±10° relative to the outer liquid outlet neck 41, the rectangular circumferential positioning boss 43 is engaged with the rectangular positioning groove 127. At this time, the first liquid outlet 121, the second liquid outlet 122, and the third liquid outlet 123 of the lower cover 12 are respectively coaxial with the upper opening of the central liquid outlet neck 21, the middle liquid outlet neck 31, and the outer liquid outlet neck 41, with a coaxiality error ≤ 0. The gap between the three-layer sealing groove and the upper opening of the corresponding liquid outlet neck is ≤0.05mm. The circumferential positioning structure of a single boss and a single groove provides a clear termination position for thread engagement. When the boss is engaged in the groove, the lower cover 12 cannot continue to be engaged, directly locking the circumferential position. Compared with the arc positioning, the rectangular structure has no circumferential sliding space, ensuring the positioning consistency of each assembly. The engagement structure of the rectangular circumferential positioning boss 43 and the rectangular positioning groove 127 can effectively resist the vibration and impact force of opening and closing the cover during use, preventing the lower cover 12 from loosening of the threads and circumferential displacement due to long-term use, and ensuring the long-term stability of positioning accuracy and sealing effect.

[0021] Please refer to Figure 1 The device has two annular diaphragms: a first annular diaphragm 34 and a second annular diaphragm 44. The first annular diaphragm 34 is positioned between the central hose assembly 2 and the middle hose assembly 3, while the second annular diaphragm 44 is positioned between the middle hose assembly 3 and the outer hose assembly 4. Both the first and second annular diaphragms 34 and 44 are integrally formed with their corresponding two hose layers through injection molding. The thickness of the annular diaphragms is 0.15–0.3 mm. Compared to traditional adhesive or assembled diaphragms, this eliminates the connection gaps between the diaphragm and the hose, upgrading the sealing from a surface seal to an integrated seal. This completely prevents liquid mixing at the diaphragm connection point, making it particularly suitable for long-term storage or frequent compression scenarios. The integrally molded diaphragm has no seams, dispersing stress during compression and reducing material fatigue cracking caused by repeated compression, significantly extending the service life of the outer hose bottle. It is especially suitable for daily chemical and food packaging scenarios requiring frequent use.

[0022] Please refer to Figure 3 and Figure 4The concentric sealing groove has three layers: a central sealing groove 124, a middle sealing groove 125, and an outer sealing groove 126. The three layers of sealing grooves are arranged concentrically and are adapted to the upper openings of the central liquid outlet neck 21, the middle liquid outlet neck 31, and the outer liquid outlet neck 41, respectively. The inner wall of the sealing groove can form a radial limit on the embedded seal, preventing the seal from radially shifting when the liquid is squeezed out or when the cover is opened and closed. This ensures that the seal is always in contact with the upper opening face of the liquid outlet neck, solving the problem of seal failure caused by easy deviation of the seal when there is no layered groove. The liquid outlet neck provides a sealing contact surface, and the sealing groove provides sealing installation positioning. The two work together to enable the seal to be quickly and accurately embedded in the preset position without additional adjustment, solving the problems of difficult assembly and positioning and large error of existing multi-cavity packaging seals.

[0023] Please refer to Figure 4 The layered elastic seal 5 includes three independent sealing units: a central sealing gasket 51, a middle sealing gasket 52, and an outer sealing gasket 53. These three sealing units are respectively embedded in the central sealing groove 124, the middle sealing groove 125, and the outer sealing groove 126. The sealing units are made of PP elastic material, forming a one-to-one sealing link between the neck, the groove, and the sealing gasket. The seal of each chamber is effective independently, avoiding the leakage of liquid throughout the entire chamber caused by the failure of a single sealing position in an integrated seal. This significantly improves the sealing redundancy. The independent sealing units are isolated from each other by the side wall of the groove, with no direct contact, completely blocking the possibility of liquid penetration across the chamber inside the seal. This is especially suitable for the isolated storage of liquids with different compositions, solving the problem of leakage caused by gaps in existing multi-chamber packaging seals that are easily left by integrated molding.

[0024] Please refer to Figure 2 and Figure 3 The lower end face of the flip-top sealing ring protrusion 111 forms an interference fit of 0.1 to 0.2 mm with the upper end face of the layered elastic seal 5. When the top cover 11 is closed, the flip-top sealing ring protrusion 111 presses against the three sealing units, making the sealing units tightly fit against the upper opening end face of the corresponding liquid outlet neck. The 0.1 to 0.2 mm range allows the seal to undergo sufficient elastic deformation to fill all potential gaps, while controlling the closing force within an acceptable range for the user. This solves the contradiction of traditional non-quantitative interference seal designs that either leak or are difficult to open and close. When the cover is closed, a pressing action is simultaneously applied to the central sealing gasket 51, the middle sealing gasket 52, and the outer sealing gasket 53, ensuring that the pressure on the three sealing units is consistent.

[0025] A specific application of this embodiment is as follows: When the product is in the closed and sealed state, after the upper cover 11 of the flip cover assembly 1 is closed by the flexible hinge 13, the flip cover sealing ring protrusion 111 on the inner side of the upper cover 11 is in complete contact with the upper end face of the center sealing gasket 51, the middle layer sealing gasket 52, and the outer layer sealing gasket 53 of the layered elastic sealing element 5, forming an interference fit of 0.1 to 0.2 mm; at this time, the center sealing gasket 51, the middle layer sealing gasket 52, and the outer layer sealing gasket 53 undergo elastic deformation under the pressure of the flip cover sealing ring protrusion 111, and their lower end face is tightly attached to the upper opening end face of the corresponding center liquid outlet neck 21, the middle layer liquid outlet neck 31, and the outer layer liquid outlet neck 41. At the same time, the outer wall of the sealing gasket is attached to the inner wall of the center sealing groove 124, the middle layer sealing groove 125, and the outer layer sealing groove 126 of the lower cover 12, realizing triple independent sealing and blocking the liquid outflow channels of the three chambers; When the product is in the open / unlocked state, applying force outwards to lift the top cover 11 causes the flexible hinge 13 to undergo elastic deformation. The top cover 11 causes the flip-top sealing ring protrusion 111 to disengage from the upper surfaces of the center sealing gasket 51, middle sealing gasket 52, and outer sealing gasket 53 of the layered elastic sealing components 5. The interference fit is released, and the sealing unit returns to its natural deformation. At this time, the upper openings of the center liquid outlet neck 21, middle liquid outlet neck 31, and outer liquid outlet neck 41 form a communication channel with the first liquid outlet 121, second liquid outlet 122, and third liquid outlet 123 of the lower cover 12, preparing for liquid to flow out. When external pressure is applied to dispensing liquid, a squeezing pressure is applied to the outer hose assembly 4. This pressure is transmitted to the three independent chambers through the outer hose assembly 4 and the middle hose assembly 3. Under the pressure, the liquid in the three chambers flows to their respective corresponding dispensing necks. The liquid in the innermost chamber flows into the central dispensing neck 21, the liquid in the middle chamber flows into the middle dispensing neck 31, and the liquid in the outermost chamber flows into the outer dispensing neck 41. At the same time, the central dispensing neck 21 is engaged with the first positioning groove 33 of the middle dispensing neck 31 through the first positioning plate 22, and the middle dispensing neck 31 is engaged with the second positioning groove 42 of the outer dispensing neck 41 through the second positioning plate 32, ensuring that the three necks remain coaxial and the liquid flow is not deviated. Finally, the three liquids pass through the gap between the corresponding sealing unit and the sealing tank and flow out synchronously from the central circular hole of the first dispensing port 121, the middle annular hole of the second dispensing port 122, and the outer annular hole of the third dispensing port 123, realizing the synchronous discharge of liquid from the three chambers.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A three-chamber tubing synchronous dispensing flip-top bottle, comprising a flip-top assembly (1) and an outer tubing bottle body, characterized in that: The outer hose bottle body is integrally injection molded, including a central hose assembly (2), a middle hose assembly (3) and an outer hose assembly (4), with an annular diaphragm between adjacent hose layers for complete isolation and sealing; The flip-top assembly (1) is connected to the outer tube bottle body and includes an upper cover (11), a lower cover (12), and a flexible hinge (13). The flexible hinge (13) is integrally injection molded, and its two ends are respectively connected to the upper cover (11) and the lower cover (12). The inner side of the upper cover (11) is provided with a flip-top sealing ring protrusion (111). The inner wall contour of the flip-top sealing ring protrusion (111) matches the outer contour of the three liquid outlets of the lower cover (12). The lower cover (12) is provided with a first outlet corresponding to each of the three independent chambers. The liquid outlet (121), the second liquid outlet (122), and the third liquid outlet (123) are arranged concentrically. The first liquid outlet (121) is a central circular hole, the second liquid outlet (122) is a middle annular hole surrounding the first liquid outlet (121), and the third liquid outlet (123) is an outer annular hole surrounding the second liquid outlet (122). The three are arranged concentrically. The inner side of the lower cover (12) is provided with a concentric sealing groove and a layered elastic seal (5). The layered elastic seal (5) is embedded in the concentric sealing groove.

2. The three-chamber flexible tube synchronous dispensing flip-top bottle according to claim 1, characterized in that: The upper end of the central hose assembly (2) is provided with a central outlet neck (21), the upper end of the middle hose assembly (3) is provided with a middle outlet neck (31), and the outer hose assembly (4) is provided with an outer outlet neck (41). The central outlet neck (21), the middle outlet neck (31) and the outer outlet neck (41) are respectively connected to the innermost chamber, the middle chamber and the outermost chamber.

3. A three-chamber flexible tube synchronous dispensing flip-top bottle according to claim 2, characterized in that: The outer wall of the central outlet neck (21) is provided with a first positioning plate (22), the inner wall of the middle layer outlet neck (31) is provided with a first positioning groove (33), and its outer wall is provided with a second positioning plate (32). The inner wall of the outer layer outlet neck (41) is provided with a second positioning groove (42), and its outer wall is provided with threads. The first positioning plate (22) is engaged with the first positioning groove (33), the second positioning plate (32) is engaged with the second positioning groove (42), and the outer wall of the outer layer outlet neck (41) is threadedly connected to the inner side of the lower cover (12).

4. A three-chamber flexible tube synchronous dispensing flip-top bottle according to claim 3, characterized in that: The thread on the inner side of the lower cover (12) is consistent with the thread lead on the outer wall of the outer liquid outlet neck (41), and the thread direction is right-handed. The upper end face of the outer liquid outlet neck (41) is provided with a rectangular circumferential positioning boss (43), and the lower end face of the lower cover (12) is provided with a matching rectangular positioning groove (127). When the lower cover (12) is screwed relative to the outer liquid outlet neck (41) by 360°±10°, the rectangular circumferential positioning boss (43) is inserted into the rectangular positioning groove (127). At this time, the first liquid outlet (121), the second liquid outlet (122), and the third liquid outlet (123) of the lower cover (12) are respectively coaxial with the upper opening of the center liquid outlet neck (21), the middle liquid outlet neck (31), and the outer liquid outlet neck (41) with an error of ≤0.1mm. The gap between the three-layer sealing groove and the upper opening of the corresponding liquid outlet neck is ≤0.05mm.

5. A three-chamber flexible tube synchronous dispensing flip-top bottle according to claim 1, characterized in that: The annular diaphragm is provided in two parts, namely a first annular diaphragm (34) and a second annular diaphragm (44). The first annular diaphragm (34) is disposed between the central hose assembly (2) and the middle hose assembly (3), and the second annular diaphragm (44) is disposed between the middle hose assembly (3) and the outer hose assembly (4). The first annular diaphragm (34) and the second annular diaphragm (44) are respectively integrated with the corresponding two layers of hose by injection molding. The thickness of the annular diaphragm is 0.15 to 0.3 mm.

6. A three-chamber flexible tube synchronous dispensing flip-top bottle according to claim 2, characterized in that: The concentric sealing trough is provided with three layers, namely a central sealing trough (124), a middle sealing trough (125) and an outer sealing trough (126). The three layers of sealing troughs are arranged concentrically and are adapted to the upper openings of the central liquid outlet neck (21), the middle liquid outlet neck (31) and the outer liquid outlet neck (41), respectively.

7. A three-chamber flexible tube synchronous dispensing flip-top bottle according to claim 6, characterized in that: The layered elastic seal (5) includes three independent sealing units, namely a central sealing gasket (51), a middle sealing gasket (52) and an outer sealing gasket (53). The three sealing units are respectively embedded in the central sealing groove (124), the middle sealing groove (125) and the outer sealing groove (126), and the sealing units are made of PP elastic material.

8. A three-chamber flexible tube synchronous dispensing flip-top bottle according to claim 7, characterized in that: The lower end face of the flip-top sealing ring protrusion (111) and the upper end face of the layered elastic seal (5) form an interference fit of 0.1 to 0.2 mm. When the upper cover (11) is closed, the flip-top sealing ring protrusion (111) presses the three sealing units, so that the central sealing gasket (51), the middle layer sealing gasket (52), and the outer layer sealing gasket (53) are tightly attached to the upper opening end faces of the corresponding central liquid outlet neck (21), the middle layer liquid outlet neck (31), and the outer layer liquid outlet neck (41).

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