Cosmetic liquid outlet head capable of avoiding liquid overflow

Abstract

The application discloses a cosmetic liquid outlet head capable of avoiding liquid overflow, which comprises a liquid transmission pipe and a liquid outlet device. The liquid outlet device specifically comprises a liquid outlet lock, a liquid outlet pipe and a liquid outlet cover. The liquid outlet lock is arranged at the bottom of the liquid outlet pipe. The liquid outlet cover is provided with a cover opening through which the liquid outlet pipe passes. A pressing protrusion is arranged on the outer wall of the liquid outlet opening of the liquid outlet pipe. When the liquid outlet pipe is switched from the locked state to the unlocked state, the liquid outlet pipe moves towards the direction of the cover opening, drives the liquid outlet lock to move away from the liquid transmission pipe, so that the liquid in the liquid transmission pipe is transmitted into the liquid outlet pipe. When the liquid outlet pipe is switched from the unlocked state to the locked state, the liquid outlet pipe moves away from the direction of the cover opening, drives the liquid outlet lock to move close to and block the liquid transmission pipe, and makes the cover opening press the pressing protrusion, so that the liquid outlet opening is reduced. By arranging the pressing protrusion on the liquid outlet pipe at the liquid outlet opening, when the liquid outlet pipe is recovered, the liquid outlet opening is reduced by pressing the pressing protrusion through the cover opening, and then the overflow of the liquid remaining in the liquid outlet pipe is avoided.

Description

Technical Field

[0001] This application relates to cosmetic packaging, and more particularly to a cosmetic dispensing nozzle that prevents liquid from spilling out. Background Technology

[0002] In traditional cosmetic liquid dispensing technology, there is often a problem of liquid remaining in the tube. That is, after the cosmetic liquid is output through a pump, some of the liquid remains in the tube opening and is not discharged. This liquid may flow out from the tube opening during use, thus causing contamination. Utility Model Content

[0003] To address the technical problem of contamination caused by liquid in the tube in existing technologies, this application provides a cosmetic dispensing head that prevents liquid overflow. The specific technical solution is as follows:

[0004] A cosmetic dispensing head that prevents liquid spillage is provided, comprising: a liquid transfer tube and a dispensing device;

[0005] The liquid dispensing device specifically includes a liquid dispensing lock, a liquid dispensing pipe, and a liquid dispensing cover; the liquid dispensing lock is located at the bottom of the liquid dispensing pipe; the liquid dispensing cover has a cover opening for the liquid dispensing pipe to pass through; and the outer wall of the liquid dispensing pipe at the liquid dispensing opening is provided with a squeezing protrusion.

[0006] When the liquid outlet tube moves towards the opening of the cover, it moves the liquid outlet lock away from the liquid delivery tube, so that the liquid in the liquid delivery tube is transferred to the liquid outlet tube.

[0007] When the liquid outlet is switched from the unlocked state to the locked state, the liquid outlet tube moves away from the opening of the mask, causing the liquid outlet lock to approach and block the liquid delivery tube, and causing the opening of the mask to squeeze the extrusion protrusion, thereby reducing the size of the liquid outlet.

[0008] Preferably, a shape-fixing ring is provided after the extrusion protrusion along the direction of the liquid outlet pipe toward the liquid outlet.

[0009] Preferably, it further includes a container connecting cover; the container connecting cover is used to connect an external container; the liquid transfer pipe is located inside the container connecting cover;

[0010] The container connecting cover is provided with a cover rotation track corresponding to the liquid outlet cover; the liquid outlet cover is connected to the container connecting cover through the cover rotation track, and can rotate along the cover rotation track under the action of external force;

[0011] When the liquid outlet hood rotates, it drives the liquid outlet pipe to rotate, so that the liquid outlet pipe moves in the direction of the hood opening or in the opposite direction of the hood opening.

[0012] More preferably, the liquid outlet hood is provided with an inner cover thread; the liquid outlet pipe is provided with a liquid outlet thread corresponding to the inner cover thread; the liquid outlet pipe is rotatably connected to the liquid outlet hood through the inner cover thread and the liquid outlet thread.

[0013] More preferably, the container connecting cover is provided with a liquid outlet, and the liquid transfer pipe extends along the liquid outlet and is connected to the liquid outlet pipe inside the liquid outlet;

[0014] When switching from the locked state to the unlocked state, the liquid outlet cover rotates in the unlocking direction, thereby driving the liquid outlet tube to move in the direction of the cover opening;

[0015] When the liquid outlet hood is switched from the unlocked state to the locked state, the liquid outlet hood rotates in the locking direction to drive the liquid outlet tube to move in the opposite direction of the hood opening.

[0016] More preferably, the liquid outlet pipe is provided with a limiting wing, and the liquid outlet cover is provided with an unlocking end corresponding to the limiting wing;

[0017] When the limiting wing is located at the unlocking end, the unlocking end prevents the limiting wing from moving further toward the cover opening.

[0018] More preferably, the drug delivery tube includes a barrel interface and an infusion hose; the barrel interface has an infusion port at its bottom, and the infusion hose is connected to the infusion port;

[0019] When in the locked state, the liquid outlet lock blocks the infusion port.

[0020] More preferably, the drug delivery tube further includes a delivery tube protective shell; the delivery tube protective shell specifically includes an interface protective shell and a hose protective shell, the hose protective shell being connected to the interface protective shell;

[0021] The interface protective shell is located outside the barrel interface, and the hose protective shell covers the outside of the infusion hose.

[0022] More preferably, the interface protective shell is inserted into the gap between the limiting wing and the liquid outlet tube, and the interface protective shell is provided with a locking end;

[0023] When the limiting wing is located at the locking end, the locking end prevents the limiting wing from moving further in the opposite direction to the cover opening.

[0024] More preferably, the inlet of the liquid transfer tube is provided with an inlet connection port; the protective shell of the transfer tube also includes an inlet protective shell; the inlet protective shell is disposed at the inlet connection port; and the bottom of the container connecting cover is provided with a snap-fit ​​interface.

[0025] The liquid inlet connection port, the liquid inlet protective shell, and the card interface are used to connect to an external container.

[0026] More preferably, the protective shell of the transmission tube is composed of a pair of half-shells; the pair of half-shells enclose the infusion tubing; and the pair of half-shells are ultrasonically welded together.

[0027] This application includes at least one of the following technical effects:

[0028] (1) By setting a squeezing protrusion at the outlet of the liquid outlet pipe, when the liquid outlet pipe is recycled, the squeezing protrusion is squeezed through the cover to reduce the outlet, thereby preventing the liquid remaining in the liquid outlet pipe from overflowing.

[0029] (2) The position of the liquid outlet pipe is controlled by the fit between the inner cover thread and the liquid outlet thread, which is convenient to use and has strong mechanical reliability;

[0030] (3) The interface protective shell and the liquid outlet cover form the moving track of the limiting wing, and the liquid outlet cover forms the limiting wing in the unlocking direction. The interface protective shell serves as the limiting wing in the locking direction, thereby achieving mechanical reliability in control. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the internal structure of a cosmetic dispensing head that prevents liquid spillage, as described in this application. Figure 1 ;

[0033] Figure 2 This is a schematic diagram of the cooperative structure of the drug delivery pipe and the dispensing device in this application;

[0034] Figure 3 This is a schematic diagram of the structure of a cosmetic dispensing head that prevents liquid overflow, with the dispensing cover removed.

[0035] Figure 4 This is a schematic diagram of the liquid dispensing cover of a cosmetic liquid dispensing head that prevents liquid overflow according to this application;

[0036] Figure 5 This is a schematic diagram of the overall structure of a cosmetic dispensing head that prevents liquid leakage according to this application;

[0037] Figure 6This is a schematic diagram of the internal structure of a cosmetic dispensing head that prevents liquid spillage, as described in this application. Figure 2 .

[0038] Medicine transfer tube 1, barrel interface 11, infusion port 111, infusion hose 12, transfer tube protective shell 13, interface protective shell 131, hose protective shell 132, locking end 133, liquid inlet protective shell 134, liquid inlet 14, liquid inlet connection port 141;

[0039] Liquid dispensing device 2; liquid dispensing lock 21, liquid dispensing pipe 22, liquid dispensing port 221, extrusion protrusion 222, liquid dispensing thread 223, limiting wing 224, shape fixing ring 225, liquid dispensing cover 23, cover opening 231, inner cover thread 232, unlocking end 233;

[0040] Container connecting cover 3, cover body rotating track 31, liquid outlet 32, card interface 33. Detailed Implementation

[0041] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0042] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or sets.

[0043] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically drawn, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0044] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0045] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0047] Example 1:

[0048] like Figure 1-6 As shown, this embodiment provides a cosmetic dispensing head that prevents liquid from overflowing, including: a liquid transfer tube 1 and a dispensing device 2;

[0049] The liquid dispensing device 2 specifically includes a liquid dispensing lock 21, a liquid dispensing pipe 22, and a liquid dispensing cover 23; the liquid dispensing lock 21 is located at the bottom of the liquid dispensing pipe 22; the liquid dispensing cover 23 is provided with a cover opening 231 for the liquid dispensing pipe 22 to pass through; and a squeezing protrusion 222 is provided on the outer wall of the liquid dispensing pipe 22 at the liquid dispensing opening 221.

[0050] When the liquid outlet pipe 22 moves towards the opening 231 from the locked state to the unlocked state, it causes the liquid outlet lock 21 to move away from the liquid transfer pipe 1, so that the liquid in the liquid transfer pipe 1 is transferred to the liquid outlet pipe 22.

[0051] When the liquid outlet 22 moves away from the opening 231 from the unlocked state, it causes the liquid outlet lock 21 to approach and block the liquid transfer pipe 1, and causes the opening 231 to squeeze the extrusion protrusion 222, so that the liquid outlet 221 is reduced.

[0052] In traditional cosmetic liquid dispensing technology, there is often a problem of liquid remaining in the tube. That is, after the cosmetic liquid is output through a pump, some of the liquid remains in the tube opening and is not discharged. This liquid may flow out from the tube opening during use, thus causing contamination.

[0053] Therefore, in this embodiment, in the initial state, i.e. the locked state, the liquid outlet lock 21 is inserted into the liquid outlet hole in the liquid delivery pipe 1 to block the liquid outlet hole, thereby forming two isolated spaces between the liquid delivery pipe 1 and the liquid outlet pipe 22, thereby preventing the liquid in the liquid delivery pipe 1 from flowing into the liquid outlet pipe 22.

[0054] When needed, the liquid outlet pipe 22 is moved outward, away from the liquid outlet hole, so that the liquid outlet lock 21 is removed from the liquid outlet hole, thereby connecting the liquid outlet pipe 22 and the liquid transfer pipe 1, so that the liquid flows from the liquid transfer pipe 1 into the liquid outlet pipe 22, thereby outputting the liquid.

[0055] When finished, the dispensing pipe 22 is moved inward, towards the dispensing hole, thereby plugging the dispensing lock 21 into the dispensing hole, blocking the dispensing hole, isolating the liquid transfer pipe 1 and the dispensing pipe 22, and preventing the dispensing pipe 22 from dispensing liquid further. However, at this time, some liquid remains in the dispensing pipe 22. At the same time, as the dispensing pipe 22 is retracted, the cover 231 will squeeze the compression protrusion 222 set at the dispensing port 221 of the dispensing pipe 22, so that the dispensing port 221 is reduced, thereby preventing the remaining liquid in the dispensing pipe 22 from overflowing.

[0056] In this embodiment, a compression protrusion 222 is provided at the outlet 221 of the outlet pipe 22. When the outlet pipe 22 is retracted, the protrusion 222 is squeezed by the cover 231, thereby reducing the outlet 221 and preventing the liquid remaining in the outlet pipe 22 from overflowing.

[0057] like Figure 2 As shown, preferably, a shape fixing ring 225 is provided after the extrusion protrusion 222 along the direction of the liquid outlet pipe 22 toward the liquid outlet 221.

[0058] Meanwhile, to prevent the compression protrusion 222 from losing its shape after being compressed, a shape fixing ring 225 is provided after the compression protrusion 222 along the direction from the liquid outlet pipe 22 to the liquid outlet 221. It is generally made of a hard material. Through this hard material, the compression protrusion 222 can still restore the original shape of the liquid outlet pipe 22 under the action of the shape fixing ring 225 after being compressed.

[0059] Example 2:

[0060] This embodiment provides a cosmetic dispensing nozzle that prevents liquid overflow, based on Embodiment 1, such as... Figure 3 As shown, it also includes a container connecting cover 3; the container connecting cover 3 is used to connect an external container; the liquid transfer pipe 1 is located inside the container connecting cover 3; the container connecting cover 3 is provided with a cover body rotation track 31 corresponding to the liquid outlet cover 23; the liquid outlet cover 23 is connected to the container connecting cover 3 through the cover body rotation track 31, and can rotate along the cover body rotation track 31 under the action of external force; when the liquid outlet cover 23 rotates, it drives the liquid outlet pipe 22 to rotate, so that the liquid outlet pipe 22 moves in the direction of the cover opening 231 or in the opposite direction of the cover opening 231. The liquid outlet cover 23 is provided with an inner cover thread 232 inside; the liquid outlet pipe 22 is provided with a liquid outlet thread 223 corresponding to the inner cover thread 232; the liquid outlet pipe 22 is rotatably connected to the liquid outlet cover 23 through the inner cover thread 232 and the liquid outlet thread 223.

[0061] In this embodiment, the position of the liquid outlet pipe 22 is controlled by rotating the liquid outlet cover 23. More specifically, an inner cover thread 232 is provided inside the liquid outlet cover 23, and a liquid outlet thread 223 corresponding to the inner cover thread 232 is provided on the outside of the liquid outlet pipe 22. This allows the liquid outlet pipe 22 to rotate when the liquid outlet cover 23 rotates, thereby being driven to move in the direction of the cover opening 231 or the opposite direction.

[0062] Meanwhile, in order to achieve the rotation of the liquid outlet cover 23, the liquid outlet cover 23 is used as the rotor and the container connecting cover 3 is used as the stator. A corresponding cover rotation track 31 is provided on the container connecting cover 3 so that the liquid outlet cover 23 can rotate on it.

[0063] More preferably, the container connecting cover 3 is provided with a liquid outlet 32, and the liquid transfer pipe 1 extends along the liquid outlet 32 ​​and is connected to the liquid outlet pipe 22 inside the liquid outlet 32; when changing from the locked state to the unlocked state, the liquid outlet cover 23 rotates in the unlocking direction to drive the liquid outlet pipe 22 to move in the direction of the cover 231; when changing from the unlocked state to the locked state, the liquid outlet cover 23 rotates in the locking direction to drive the liquid outlet pipe 22 to move in the opposite direction of the cover 231.

[0064] This embodiment controls the position of the liquid outlet pipe 22 by the cooperation between the inner cover thread 232 and the liquid outlet thread 223, which is convenient to use and has strong mechanical reliability.

[0065] Example 3:

[0066] This embodiment provides a cosmetic dispensing nozzle that prevents liquid overflow. Based on embodiment 1, a further preferred embodiment is as follows: Figure 2 , 3 As shown in Figures 4 and 6, the liquid outlet pipe 22 is provided with a limiting wing 224, and the liquid outlet cover 23 is provided with an unlocking end 233 corresponding to the limiting wing 224; when the limiting wing 224 is located at the unlocking end 233, the unlocking end 233 prevents the limiting wing 224 from continuing to move towards the cover opening 231.

[0067] When unlocking, the limiting wing 224 and the unlocking end 233 on the liquid outlet cover 23 are used together. Generally, four limiting wings 224 are provided on the liquid outlet pipe 22. The four limiting wings 224 are evenly distributed around the liquid outlet pipe 22. The unlocking end 233 provided inside the liquid outlet cover 23 is generally set in a stepped shape. When the limiting wing 224 moves to the position of the unlocking end 233, it will be blocked by the stepped unlocking end 233, thereby restricting the movement of the limiting wing 224 in that direction.

[0068] The drug delivery tube 1 includes a container inlet 11 and an infusion tubing 12; the container inlet 11 has an infusion port 111 at its bottom, and the infusion tubing 12 is connected to the infusion port 111; when in the locked state, the outlet lock 21 blocks the infusion port 111. The drug delivery tube 1 also includes a delivery tube protective shell 13; the delivery tube protective shell 13 specifically includes an interface protective shell 131 and a tubing protective shell 132, the tubing protective shell 132 being connected to the interface protective shell 131; the interface protective shell 131 covers the outside of the container inlet 11, and the tubing protective shell 132 covers the outside of the infusion tubing 12. The interface protective shell 131 is inserted into the gap between the limiting wing 224 and the liquid outlet pipe 22. The interface protective shell 131 is provided with a locking end 133. When the limiting wing 224 is located at the locking end 133, the locking end 133 prevents the limiting wing 224 from moving further in the opposite direction to the cover opening 231.

[0069] For locking, it is achieved by the cooperation of locking end 133 and limiting wing 224 set on interface protective shell 131; when the fiber wing moves to the position of locking end 133, it will be blocked by the stepped locking end 133, thereby restricting the movement of limiting wing 224 in the locking direction.

[0070] More preferably, such as Figure 6 As shown, the inlet 14 of the drug delivery tube 1 is provided with an inlet connection port 141; the delivery tube protective shell 13 also includes an inlet protective shell 134; the inlet protective shell 134 is disposed at the inlet connection port 141; the bottom of the container connecting cover 3 is provided with a locking interface 33; the inlet connection port 141, the inlet protective shell 134 and the locking interface 33 cooperate to connect with an external container. The delivery tube protective shell 13 is composed of a pair of half-shells; the pair of half-shells wrap around the infusion tubing 12; the pair of half-shells are ultrasonically welded together.

[0071] In this embodiment, the interface protective shell 131 and the liquid outlet cover 23 form the moving track of the limiting wing 224, and the liquid outlet cover 23 forms the limiting wing 224 in the unlocking direction. The interface protective shell 131 serves as the limiting wing 224 in the locking direction, thereby achieving mechanical reliability in control.

[0072] This application achieves the following through the above embodiments:

[0073] (1) By setting a squeezing protrusion at the outlet of the liquid outlet pipe, when the liquid outlet pipe is recycled, the squeezing protrusion is squeezed through the cover to reduce the outlet, thereby preventing the liquid remaining in the liquid outlet pipe from overflowing.

[0074] (2) The position of the liquid outlet pipe is controlled by the fit between the inner cover thread and the liquid outlet thread, which is convenient to use and has strong mechanical reliability;

[0075] (3) The interface protective shell and the liquid outlet cover form the moving track of the limiting wing, and the liquid outlet cover forms the limiting wing in the unlocking direction. The interface protective shell serves as the limiting wing in the locking direction, thereby achieving mechanical reliability in control.

[0076] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0077] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A cosmetic dispensing nozzle that prevents liquid spillage, characterized in that, include: Drug delivery pipe and dispensing device; The liquid dispensing device specifically includes a liquid dispensing lock, a liquid dispensing pipe, and a liquid dispensing cover; the liquid dispensing lock is located at the bottom of the liquid dispensing pipe; the liquid dispensing cover has a cover opening for the liquid dispensing pipe to pass through; and the outer wall of the liquid dispensing pipe at the liquid dispensing opening is provided with a squeezing protrusion. When the liquid outlet tube moves towards the opening of the cover, it moves the liquid outlet lock away from the liquid delivery tube, so that the liquid in the liquid delivery tube is transferred to the liquid outlet tube. When the liquid outlet is switched from the unlocked state to the locked state, the liquid outlet tube moves away from the opening of the mask, causing the liquid outlet lock to approach and block the liquid delivery tube, and causing the opening of the mask to squeeze the extrusion protrusion, thereby reducing the size of the liquid outlet.

2. The cosmetic dispensing nozzle for preventing liquid overflow according to claim 1, characterized in that, A shape-fixing ring is provided after the extrusion protrusion along the direction of the liquid outlet pipe toward the liquid outlet.

3. A cosmetic dispensing nozzle for preventing liquid overflow according to claim 1, characterized in that, The liquid outlet hood is provided with an inner cover thread; The liquid outlet pipe is provided with liquid outlet threads that correspond to the threads of the inner cover; The liquid outlet pipe is rotatably connected to the liquid outlet cover via the inner cover thread and the liquid outlet thread; When the liquid outlet hood rotates, it drives the liquid outlet pipe to rotate, so that the liquid outlet pipe moves in the direction of the hood opening or in the opposite direction of the hood opening.

4. A cosmetic dispensing nozzle for preventing liquid overflow according to claim 3, characterized in that, It also includes a container connection cover; the container connection cover is used to connect an external container; the liquid transfer pipe is located inside the container connection cover; The container connecting cover is provided with a cover rotation track corresponding to the liquid outlet cover; the liquid outlet cover is connected to the container connecting cover through the cover rotation track, and can rotate along the cover rotation track under the action of external force.

5. A cosmetic dispensing nozzle for preventing liquid overflow according to claim 4, characterized in that, The container connecting cover is provided with a liquid outlet, and the liquid transfer pipe extends along the liquid outlet and is connected to the liquid outlet pipe inside the liquid outlet; When switching from the locked state to the unlocked state, the liquid outlet cover rotates in the unlocking direction, thereby driving the liquid outlet tube to move in the direction of the cover opening; When the liquid outlet hood is switched from the unlocked state to the locked state, the liquid outlet hood rotates in the locking direction to drive the liquid outlet tube to move in the opposite direction of the hood opening.

6. A cosmetic dispensing nozzle for preventing liquid overflow according to claim 5, characterized in that, The liquid outlet pipe is provided with a limiting wing, and the liquid outlet cover is provided with an unlocking end corresponding to the limiting wing; When the limiting wing is located at the unlocking end, the unlocking end prevents the limiting wing from moving further toward the cover opening.

7. A cosmetic dispensing nozzle for preventing liquid overflow according to claim 6, characterized in that, The drug delivery pipe includes a barrel interface and an infusion hose; the bottom of the barrel interface is provided with an infusion port, and the infusion hose is connected to the infusion port. When in the locked state, the liquid outlet lock blocks the infusion port.

8. A cosmetic dispensing nozzle for preventing liquid overflow according to claim 7, characterized in that, The drug delivery tube also includes a delivery tube protective shell; the delivery tube protective shell specifically includes an interface protective shell and a hose protective shell, and the hose protective shell is connected to the interface protective shell. The interface protective shell is outside the barrel interface, and the hose protective shell covers the outside of the infusion hose.

9. A cosmetic dispensing nozzle for preventing liquid overflow according to claim 8, characterized in that, The interface protective shell is inserted into the gap between the limiting wing and the liquid outlet pipe, and the interface protective shell is provided with a locking end; When the limiting wing is located at the locking end, the locking end prevents the limiting wing from moving further in the opposite direction to the cover opening.

10. A cosmetic dispensing nozzle for preventing liquid overflow according to claim 8, characterized in that, The liquid transfer tube is provided with a liquid inlet connection port at its inlet; the protective shell of the transfer tube also includes a liquid inlet protective shell; the liquid inlet protective shell is located at the liquid inlet connection port; the bottom of the container connection cover is provided with a snap-fit ​​interface. The liquid inlet connection port, the liquid inlet protective shell, and the card interface are used to connect to an external container. The protective shell of the transmission tube is composed of a pair of half-shells; the pair of half-shells enclose the infusion tubing; the pair of half-shells are ultrasonically welded together.

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