Double-pipe extrusion bottle cap

Abstract

The present application discloses a double-pipe extrusion bottle cap, and relates to the technical field related to bottle caps, comprising a hose and a bottle cap arranged on an open end of the hose. The hose comprises an outer pipe and an inner pipe, and the outer pipe is provided with a first liquid outlet hole for liquid in the inner pipe to be discharged and a second liquid outlet hole for liquid in the outer pipe to be discharged; the bottle cap comprises a lower cap rotatably connected to the hose, the lower cap is provided with an upper cap in a flipping manner, and the lower cap is provided with a first liquid outlet and a second liquid outlet; and the following three liquid discharge modes can be achieved during a rotation stroke of the bottle cap. (The most illustrative figure is FIG. 1)

Description

Double-tube extrusion bottle cap TECHNICAL FIELD

[0001] The present application relates to the technical field of bottle caps, in particular to a double-tube extrusion bottle cap. BACKGROUND

[0002] It is known that an extrusion bottle cap generally refers to a sealing member for the opening end of a bottle made of plastic or other materials, which generally includes a lower cap with an extrusion hole and an upper cap for sealing the extrusion hole, the lower cap is connected with the opening end of the bottle, and the upper cap is connected with the lower cap, when the liquid in the bottle needs to be used, only the outer cap needs to be opened, and the liquid inside can be discharged from the extrusion hole.

[0003] In the prior art, the bottle used generally can only load a single liquid, so the user often needs to carry multiple bottles loaded with different liquids, thereby causing the complexity of carrying and bringing inconvenience to use, therefore, in order to solve this problem, in the patent with the publication number CN111268290B and the publication date of May 17, 2024, and the name of "a bottle capable of loading two liquid cosmetics", a bottle capable of loading two liquid cosmetics is disclosed, which comprises a bottle body, an upper sealing cap and a conduit, the bottle body is threadedly installed or clamped with the upper sealing cap, the bottom end of the conduit extends into the bottle body, the bottom end of the bottle body is rotatably installed with a base, the inside of the bottle body is movably provided with a sealing sheet and a separation piece, the top of the separation piece is closed and the bottom is open, the sealing sheet is provided with two arc-shaped notches, and the bottom end of the separation piece extends to the lower side of the sealing sheet through the two arc-shaped notches. Through the arrangement of each structure, two different types of liquid cosmetics can be stored in one bottle body at the same time and in different areas, and the two cosmetics will not be mixed before the bottle is opened for use, the shelf life of the cosmetics is maintained, and when the two cosmetics need to be used, only the base below the bottle body needs to be rotated to mix the two cosmetics, thereby reducing the carrying burden of the user and making the use more convenient.

[0004] In the prior art, some liquids need to be used with another liquid, but need to be mixed and used at the time of use, so as not to lose effectiveness after a long mixing time, and sometimes according to different use conditions, the two liquids need to be used separately, the above-mentioned patent has the disadvantages that although the two liquids can be used together, they cannot be separated after being mixed, and a single liquid cannot be used alone. SUMMARY

[0005] The purpose of the present application is to provide a double-tube extrusion bottle cap to solve the technical problems in the related art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] Double-tube extrusion bottle cap, comprising a soft tube and a bottle cap arranged at the open end of the soft tube, the soft tube comprising an outer tube and an inner tube, the outer tube being provided with a first liquid outlet hole for discharging liquid in the inner tube and a second liquid outlet hole for discharging liquid in the outer tube; the bottle cap comprising a lower cap rotationally connected with the soft tube, the lower cap being provided with an upper cap in a flip manner, the lower cap being provided with a first liquid outlet hole and a second liquid outlet hole; in the rotation stroke of the bottle cap, the following three liquid discharge modes can be realized: mode one, when the first liquid outlet hole and the second liquid outlet hole are communicated, and the second liquid outlet hole and the first liquid outlet hole are communicated, the liquid in the inner tube and the liquid in the outer tube can be discharged simultaneously; mode two, when the first liquid outlet hole and the first liquid outlet hole are communicated, the liquid in the inner tube can be discharged; mode three, when the second liquid outlet hole and the second liquid outlet hole are communicated, the liquid in the outer tube can be discharged.

[0008] The above-mentioned upper cap is provided with a first sealing plug corresponding to the first liquid outlet hole and a second sealing plug corresponding to the second liquid outlet hole.

[0009] The above-mentioned tube body part of the outer tube and the tube body part of the inner tube are made of soft material, and the tube port part of the outer tube and the tube port part of the inner tube are made of hard material.

[0010] The above-mentioned lower cap is internally arranged with three convex parts corresponding to the three liquid discharge modes in sequence along the circumference, and the tube port part of the outer tube is arranged with three concave parts in sequence along the circumference; in any liquid discharge mode, the three convex parts and the three concave parts are one-to-one corresponding, and each convex part is inserted with the corresponding concave part.

[0011] The above-mentioned in the rotation direction of the bottle cap, any convex part and any concave part exist projection coincident part, in the insertion stroke of any convex part and any concave part, the resistance given by the concave part to the convex part first increases and then decreases.

[0012] The above-mentioned lower cap is further provided with a push piece inside, and the tube port part of the outer tube is further arranged with three push grooves in sequence along the circumference, in the switching stroke of the three liquid discharge modes, the push piece produces sound feedback after being pushed by any push groove.

[0013] The above-mentioned upper cap is slidably provided with a button, a first elastic member is arranged between the button and the upper cap, a positive buckle is arranged on the button, and a passive buckle is arranged on the lower cap; when the upper cap is in the closed position, the positive buckle is engaged with the passive buckle based on the elastic force of the first elastic member; when the upper cap needs to be opened, the positive buckle is disengaged from the passive buckle based on the pressing force.

[0014] The above-mentioned lower cap and the outer tube are provided with a second elastic member at the rotation connection position, in the rotation stroke of the lower cap in any direction, the resistance given by the second elastic member to the lower cap gradually increases.

[0015] The maximum elastic force of the first elastic member is insufficient to drive any protruding part to separate from the corresponding inserted recess.

[0016] The lower cover is further provided with a trigger member, and in the closing stroke of the upper cover, the trigger member drives each protruding part to separate from the corresponding inserted recess based on the extrusion of the upper cover, and the liquid outlet mode returns to mode one based on the rebound force of the second elastic member.

[0017] The beneficial effects of the present application are that by arranging the first liquid outlet hole, the second liquid outlet hole, the first liquid outlet and the second liquid outlet, three different communication modes can be realized in the rotation process of the bottle cap, so that the liquid in the outer tube and the liquid in the inner tube can be discharged together or separately, thereby different liquid outlet modes can be switched according to the actual use. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0019] Fig. 1 is a perspective structural schematic view of the upper cover and the lower cover of the double-tube extrusion bottle cap in the embodiment of the present application when closed;

[0020] Fig. 2 is a cross-sectional structural schematic view of the upper cover and the lower cover of the double-tube extrusion bottle cap in the embodiment of the present application when closed;

[0021] Fig. 3 is an exploded view of the upper cover and the lower cover of the double-tube extrusion bottle cap in the embodiment of the present application when closed;

[0022] Fig. 4 is a plan structural schematic view of the inner part of the lower cover and the tube opening part of the outer tube of the double-tube extrusion bottle cap in the embodiment of the present application;

[0023] Fig. 5 is a perspective structural schematic view of the upper cover and the lower cover of the double-tube extrusion bottle cap in the embodiment of the present application when opened;

[0024] Fig. 6 is a cross-sectional structural schematic view of the upper cover and the lower cover of the double-tube extrusion bottle cap in the embodiment of the present application when opened;

[0025] Fig. 7 is an exploded view of the upper cover and the lower cover of the double-tube extrusion bottle cap in the embodiment of the present application when opened.

[0026] Explanation of reference signs: 1, hose; 10, outer tube; 11, inner tube; 12, first liquid outlet; 13, second liquid outlet; 14, first sealing plug; 15, second sealing plug; 2, bottle cap; 20, upper cap; 21, lower cap; 22, first liquid outlet; 23, second liquid outlet; 24, annular clamping sleeve; 25, annular clamping groove; 26, protruding part; 27, recessed part; 28, push piece; 29, push groove; 30, button; 31, first elastic member; 32, active clasp; 33, passive clasp; 34, second elastic member; 35, annular body; 36, third elastic member. DETAILED DESCRIPTION

[0027] In order to make the technical personnel in the art better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the accompanying drawings 1 to 7.

[0028] The embodiment of the present application provides a double-tube extrusion bottle cap 2, which comprises a hose 1 and a bottle cap 2 arranged at the open end of the hose 1, the hose 1 comprises an outer tube 10 and an inner tube 11, the outer tube 10 is provided with a first liquid outlet 12 for discharging liquid in the inner tube 11 and a second liquid outlet 13 for discharging liquid in the outer tube 10; the bottle cap 2 comprises a lower cap 21 rotationally connected with the hose 1, the lower cap 21 is provided with an upper cap 20 in a turnover manner, and the lower cap 21 is provided with a first liquid outlet 22 and a second liquid outlet 23; in the rotation stroke of the bottle cap 2, the following three liquid discharge modes can be realized: mode one, when the first liquid outlet 22 is communicated with the second liquid outlet 13 and the second liquid outlet 23 is communicated with the first liquid outlet 12, the liquid in the inner tube 11 and the liquid in the outer tube 10 can be discharged at the same time; mode two, when the first liquid outlet 12 is communicated with the first liquid outlet 22, the liquid in the inner tube 11 can be discharged; mode three, when the second liquid outlet 13 is communicated with the second liquid outlet 23, the liquid in the outer tube 10 can be discharged.

[0029] Specifically, in the prior art, the bottle used can generally only load a single liquid, so users often need to carry multiple bottles loaded with different liquids, thereby causing the complexity of carrying and inconvenience of use, and therefore to solve this problem, in the prior art, a bottle loaded with two liquids is arranged in combination, a cavity for storing two pastes or liquids is arranged in a hose 1, and when in use, only the two liquids need to be mixed, but certain liquids need to be used with another liquid, but need to be mixed and used in use, so as to avoid invalidation after long mixing time, and sometimes according to different use conditions, the two liquids need to be used separately, and therefore to solve the above problems, in the embodiment, the hose 1 is divided into an outer tube 10 and an inner tube 11, a first cavity is formed between the inner wall of the outer tube 10 and the outer wall of the inner tube 11, the first cavity is used for storing liquid A, the inner tube 11 itself is a second cavity, the second cavity is used for storing liquid B, the tube opening part of the inner tube 11 is inserted into the tube opening part of the outer tube 10, the tube opening part of the outer tube 10 is circular in radial section, the tube opening part of the inner tube 11 is rectangular in radial section, that is, there is a passage between the tube opening part of the inner tube 11 and the tube opening part of the outer tube 10 for discharging liquid A, a first liquid outlet hole 12 and a second liquid outlet hole 13 are arranged on the tube opening part of the outer tube 10, the first liquid outlet hole 12 communicates with the second cavity and is used for discharging liquid B, a cap 2 is divided into an upper cap 20 and a lower cap 21, the lower cap 21 is rotatably arranged on the tube opening part of the outer tube 10 by clamping, which is not described in detail in the prior art, the upper cap 20 is arranged on the lower cap 21 by overturning, and the upper cap 20 is provided with an annular clamping sleeve 24, and the lower cap 21 is provided with an annular clamping groove 25, during overturning of the upper cap 20 towards the lower cap 21, the annular clamping sleeve 24 is gradually clamped with the annular clamping groove 25, that is, in the axial direction, the annular clamping groove 25 limits the movement of the annular clamping sleeve 24 to a certain extent, that is, when an external force acts, the upper cap 20 can be overturned away from the lower cap 21, wherein the first liquid outlet hole 22 and the second liquid outlet hole 23 are arranged on the lower cap 21, and by rotating the lower cap 21, the first liquid outlet hole 12, the second liquid outlet hole 13, the first liquid outlet hole 22 and the second liquid outlet hole 23 can be used in combination to achieve three liquid discharge modes:

[0030] Mode one, when the first liquid outlet hole 22 communicates with the second liquid outlet hole 13 and the second liquid outlet hole 23 communicates with the first liquid outlet hole 12, the liquid in the inner tube 11 and the liquid in the outer tube 10 can be discharged at the same time; mode two, when the first liquid outlet hole 12 communicates with the first liquid outlet hole 22, the liquid in the inner tube 11 can be discharged; mode three, when the second liquid outlet hole 13 communicates with the second liquid outlet hole 23, the liquid in the outer tube 10 can be discharged;

[0031] In the axial direction, the inner wall of the lower cover 21 is in sliding fit with the outer wall of the pipe mouth portion of the outer pipe 10, that is, when in mode two, the second liquid outlet hole 13 is sealed by the inner wall of the lower cover 21, and the second liquid outlet 23 is sealed by the outer wall of the pipe mouth portion of the outer pipe 10, when in mode three, the first liquid outlet hole 12 is sealed by the inner wall of the outer cover, and the first liquid outlet 22 is sealed by the outer wall of the pipe mouth portion of the outer pipe 10.

[0032] The beneficial effects of the embodiment are that by providing the first liquid outlet hole 12, the second liquid outlet hole 13, the first liquid outlet 22 and the second liquid outlet 23, three different communication modes can be realized during the rotation of the bottle cap 2, so that the liquid in the outer pipe 10 and the liquid in the inner pipe 11 can be discharged together or separately, thereby different liquid discharge modes can be switched according to actual use.

[0033] Preferably, the upper cover 20 is provided with a first sealing plug 14 corresponding to the first liquid outlet 22 and a second sealing plug 15 corresponding to the second liquid outlet 23; specifically, after the upper cover 20 and the lower cover 21 are closed in the three liquid discharge modes, the sealing effect between the upper cover 20 and the lower cover 21 cannot effectively seal the first liquid outlet 22 and the second liquid outlet 23 on the lower cover 21, therefore in this embodiment, the first sealing plug 14 and the second sealing plug 15 are provided on the corresponding part of the upper cover 20, and the first sealing plug 14 and the second sealing plug 15 both have a certain elastic deformation capacity, when the lower cover 21 is closed with the upper cover 20, the first sealing plug 14 is inserted with the first liquid outlet 22, and the second sealing plug 15 is inserted with the second liquid outlet 23, thereby more effectively avoiding the leakage of liquid, wherein in an optional embodiment, the pipe body of the outer pipe 10 and the pipe body of the inner pipe 11 are both made of soft material, and the pipe mouth portion of the outer pipe 10 and the pipe mouth portion of the inner pipe 11 are both made of hard material, so that the liquid can be easily discharged by extruding the flexible pipe 1, and the use of hard material for the pipe mouth portion can avoid the pipe mouth portion being extruded, resulting in gaps between the first sealing plug 14 and the first liquid outlet 22 and between the second sealing plug 15 and the second liquid outlet 23.

[0034] Further, the lower cover 21 is internally arranged with three protruding portions 26 corresponding to the three liquid discharge modes in sequence in the circumferential direction, and the pipe mouth portion of the outer pipe 10 is arranged with three recessed portions 27 in sequence in the circumferential direction; in any liquid discharge mode, the three protruding portions 26 and the three recessed portions 27 are one-to-one corresponding, and each protruding portion 26 is inserted with the corresponding recessed portion 27; in the rotation direction of the bottle cap 2, there is a projection overlapping part between any protruding portion 26 and any recessed portion 27, and in the insertion stroke of any protruding portion 26 and any recessed portion 27, the resistance given by the recessed portion 27 to the protruding portion 26 first increases and then decreases.

[0035] Specifically, when any liquid outlet mode is needed, the position of the lower cover 21 needs to be limited to avoid the problem that the liquid outlet mode is switched or three liquid outlet modes cannot be realized after the bottle cap 2 is accidentally touched. Therefore, in the embodiment, three protruding portions 26 are arranged in the lower cover 21 in sequence along the circumference, and three recessed portions 27 are arranged in the pipe opening portion of the outer pipe 10 in sequence along the circumference. In the rotation stroke of the lower cover 21, any protruding portion 26 can be inserted with any recessed portion 27. In the insertion stroke of the protruding portion 26 and the recessed portion 27, there is a wedge-shaped matching portion between the protruding portion 26 and the recessed portion 27, which will generate a force that hinders the insertion of the protruding portion 26 and the recessed portion 27. When the protruding portion 26 and the recessed portion 27 are separated, there is also a wedge-shaped matching portion between the protruding portion 26 and the recessed portion 27, which will hinder the separation of the protruding portion 26 and the recessed portion 27. In this way, in any liquid outlet mode, the lower cover 21 can be limited to rotate on the outer pipe 10 to a certain extent, and in the rotation stroke of the lower cover 21, the resistance provided by the wedge-shaped matching portion can provide a certain hand feeling for the user to determine that the liquid outlet mode switching is successful.

[0036] In an optional embodiment, the lower cover 21 further has three dialing pieces 28 arranged in sequence along the circumference inside the lower cover 21 corresponding to the three liquid outlet modes, and the pipe opening portion of the outer pipe 10 further has three dialing grooves 29 arranged in sequence along the circumference. In the switching stroke of the three liquid outlet modes, the dialing piece 28 produces sound feedback after being dialled by the dialing groove 29. Specifically, the dialing action between the dialing piece 28 and any dialing groove 29 produces sound, which can also provide sound feedback for the user to better determine the liquid outlet mode switching.

[0037] Further, the upper cover 20 has a button 30 slidingly arranged thereon, and a first elastic member 31 is arranged between the button 30 and the upper cover 20. The button 30 is provided with a male buckle 32, and the lower cover 21 is provided with a female buckle 33. When the upper cover 20 is in the closed position, the male buckle 32 is clamped with the female buckle 33 based on the elastic force of the first elastic member 31. When the upper cover 20 needs to be opened, the male buckle 32 is separated from the female buckle 33 based on the pressing force.

[0038] Specifically, in the foregoing embodiments, after the upper cover 20 and the lower cover 21 are closed, the locking between the two is achieved by providing the upper cover 20 with an annular clamping sleeve 24 and the lower cover 21 with an annular clamping groove 25. During the turning of the upper cover 20 towards the lower cover 21, the annular clamping sleeve 24 gradually clamps with the annular clamping groove 25, that is, in the axial direction, the annular clamping groove 25 limits the movement of the annular clamping sleeve 24 to a certain extent. When the user needs to use the liquid in the hose 1, the user applies force to the upper cover 20 to open the upper cover 20 and the lower cover 21. However, when the upper cover 20 is accidentally bumped by external force, the upper cover 20 and the lower cover 21 may be opened, which will cause the first sealing plug 14 and the first liquid outlet 22 to be disconnected, and the second sealing plug 15 and the second liquid outlet 23 to be disconnected, thereby causing the liquid to flow out of the hose 1.

[0039] Therefore, based on the above problems, in the present embodiment, on the basis of the first locking achieved by the cooperation of the annular clamping sleeve 24 and the annular clamping groove 25, a second locking is further provided between the upper cover 20 and the lower cover 21, that is, a button 30 is slidably arranged on the upper cover 20. The position of the button 30 is opposite to the position of the upper cover 20 connected to the lower cover 21 in the radial direction, and the sliding direction of the button 30 is also parallel to the radial direction. In the sliding direction, a first elastic member 31 is arranged between the button 30 and the upper cover 20. Based on the elastic force of the first elastic member 31, the button 30 has a tendency to always extend out of the upper cover 20 in the sliding direction. A male buckle 32 is arranged on the button 30, and the clamping opening of the male buckle 32 is in a V-shaped structure. A female buckle 33 is arranged on the lower cover 21, and the structure of the female buckle 33 is matched with the clamping opening of the male buckle 32. Under the elastic force of the first elastic member 31, when the male buckle 32 clamps with the female buckle 33, the female buckle 33 will not move in the sliding direction of the button 30. During the turning of the upper cover 20 towards the lower cover 21, there is a wedge-shaped cooperation between the male buckle 32 and the female buckle 33. The wedge-shaped cooperation achieves the extrusion between the male buckle 32 and the female buckle 33, so that the elastic force of the first elastic member 31 increases. That is, in the turning direction of the upper cover 20, the extrusion between the male buckle 32 and the female buckle 33 causes the male buckle 32 to gradually open away from the female buckle 33 in the sliding direction of the button 30, so that the clamping opening of the male buckle 32 can clamp with the female buckle 33, achieving the second locking of the upper cover 20 and the lower cover 21. When the user needs to open the upper cover 20, the user first presses the button 30, and the button 30 drives the male buckle 32 to move in the sliding direction, so that the clamping opening of the male buckle 32 is disconnected from the female buckle 33. Then, the upper cover 20 is pushed to turn away from the lower cover 21, so that the second locking is first released and then the first locking is released. In this way, the purpose of preventing accidental bumping can be achieved.

[0040] Further, the second elastic member 34 is arranged at the position where the lower cover 21 is rotatably connected with the outer tube 10, and the resistance of the second elastic member 34 to the rotation of the lower cover 21 gradually increases in the rotation stroke of the lower cover 21 in either direction.

[0041] Specifically, in the foregoing embodiments, the user is provided with the same tactile and sound feedback during the switching process of the three liquid outlet modes, and the liquid outlet mode remains the same as the previous one after the previous use. If the mode needs to be adjusted when it is needed next time, the user is still provided with the same tactile and sound feedback, which makes it difficult for the user to quickly and accurately switch to the desired liquid outlet mode. Therefore, in the present embodiment, the second elastic member 34 is arranged between the lower cover 21 and the outer tube 10, and the second elastic member 34 provides gradually increasing resistance to the rotation of the lower cover 21. Thus, the initial liquid outlet mode is mode one, and the elastic force of the second elastic member 34 gradually increases when the lower cover 21 is rotated clockwise or counterclockwise. Thus, the user is provided with gradually increasing damping tactile feedback, thereby better judging the liquid outlet mode. The maximum elastic force of the first elastic member 31 is not enough to separate any protruding part 26 from the corresponding recessed part 27, that is, the lower cover 21 needs to be restricted to a certain extent in any liquid outlet mode (the specific reasons are described in detail in the foregoing embodiments, and will not be described in detail here).

[0042] Further, the lower cover 21 is further provided with a trigger member, and in the closing stroke of the upper cover 20, the trigger member is driven to separate each protruding part 26 from the corresponding recessed part 27 based on the extrusion of the upper cover 20. Based on the elastic force of the second elastic member 34, the liquid outlet mode returns to mode one.

[0043] Specifically, for more convenient and accurate switching of the user outflow mode, the initial outflow mode is set to mode one in the embodiment, and after each use, the lower cover 21 and the upper cover 20 are closed, the outflow mode can be switched back to mode one, that is, the trigger part is to arrange the three protruding parts 26 on a ring body 35 together, the ring body 35 is arranged on the lower cover 21 in the axial direction, and in the sliding direction, the ring body 35 and the lower cover 21 are provided with a third elastic part 36, wherein the passive buckle 33 is fixedly connected with the ring body 35, based on the elastic force of the third elastic part 36, the ring body 35 has a tendency to always drive the three protruding parts 26 to be inserted with the three recessed parts 27, in the deflection stroke of the upper cover 20 towards the direction close to the lower cover 21, the active buckle 32 and the passive buckle 33 are staggered in the sliding direction of the button 30 due to the extrusion action, in the process of the card hole of the active buckle 32 and the passive buckle 33, since the active buckle 32 can only move along the sliding direction of the button 30, the card hole of the active buckle 32 will give the passive buckle 33 an axial moving force, so that the passive buckle 33 will drive the ring body 35 to move, the ring body 35 drives the three protruding parts 26 to be separated from the three recessed parts 27, after the three protruding parts 26 and the three recessed parts 27 are completely separated, the elastic force of the second elastic part 34 will drive the lower cover 21 to rotate, so that the outflow mode returns to mode one, and after the upper cover 20 and the lower cover 21 are opened, the ring body 35 will drive the three protruding parts 26 and the three recessed parts 27 to be inserted under the elastic force of the third elastic part 36.

[0044] The foregoing merely describes certain exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the foregoing drawings and descriptions are illustrative in nature, and should not be construed as limiting the scope of the claims of the present application.

Claims

1. A double tube extruded bottle cap comprising a soft tube and a cap provided at an open end of the soft tube, characterized in that, The soft tube comprises an outer tube and an inner tube, the outer tube is provided with a first liquid outlet hole for liquid in the inner tube to discharge and a second liquid outlet hole for liquid in the outer tube to discharge; the bottle cap comprises a lower cap rotationally connected with the soft tube, the lower cap is provided with an upper cap in a flip manner, the lower cap is provided with a first liquid outlet hole and a second liquid outlet hole; in the rotation stroke of the bottle cap, the following three liquid discharge modes can be realized: Mode one, when the first liquid outlet hole and the second liquid outlet hole are communicated, and the second liquid outlet hole and the first liquid outlet hole are communicated, the liquid in the inner tube and the liquid in the outer tube can be discharged at the same time; Mode two, when the first liquid outlet hole and the first liquid outlet hole are communicated, the liquid in the inner tube can be discharged; Mode three, when the second liquid outlet hole and the second liquid outlet hole are communicated, the liquid in the outer tube can be discharged.

2. The dual tube extruded cap of claim 1, wherein, The upper cap is provided with a first sealing plug corresponding to the first liquid outlet hole and a second sealing plug corresponding to the second liquid outlet hole.

3. The dual tube extruded cap of claim 1, wherein, The tube body part of the outer tube and the tube body part of the inner tube are made of soft material, and the tube opening part of the outer tube and the tube opening part of the inner tube are made of hard material.

4. The dual tube extruded cap of claim 3, wherein, The lower cap is internally provided with three convex parts corresponding to the three liquid discharge modes in sequence along the circumference, and the tube opening part of the outer tube is provided with three concave parts in sequence along the circumference; in any liquid discharge mode, the three convex parts and the three concave parts are one-to-one corresponding, and each convex part is inserted with the corresponding concave part.

5. The dual tube extruded cap of claim 4, wherein, In the rotation direction of the bottle cap, there is a projection overlapping part between any convex part and any concave part, and in the insertion stroke of any convex part and any concave part, the resistance of the concave part to the convex part first increases and then decreases.

6. The dual tube extruded cap of claim 3, wherein, The lower cap is further provided with a tab, and the tube opening part of the outer tube is further provided with three tab slots in sequence along the circumference, and in the switching stroke of the three liquid discharge modes, the tab produces sound feedback after being actuated by any tab slot.

7. The dual tube extruded cap of claim 3, wherein, The upper cap is provided with a button slidingly, a first elastic member is arranged between the button and the upper cap, the button is provided with a positive buckle, and the lower cap is provided with a passive buckle; when the upper cap is in the closed position, the positive buckle is engaged with the passive buckle based on the elastic force of the first elastic member; when the upper cap needs to be opened, the positive buckle is disengaged from the passive buckle based on the pressing force.

8. The dual tube extruded cap of claim 7, wherein, The second elastic member is arranged at the rotation connection position of the lower cap and the outer tube, and the resistance of the second elastic member to the lower cap gradually increases in the rotation stroke of the lower cap in any direction.

9. The dual tube extruded cap of claim 8, wherein, The maximum elastic force of the first elastic member is not enough to drive any convex part to separate from the corresponding inserted concave part.

10. The dual tube extruded cap of claim 9, wherein, The lower cap is further provided with a trigger, and in the closing stroke of the upper cap, the trigger drives each convex part to separate from the corresponding inserted concave part based on the extrusion of the upper cap, and the liquid discharge mode returns to mode one based on the rebound force of the second elastic member.