Double-tube extrusion bottle cap

Abstract

The invention discloses a double-tube extrusion bottle cap, and relates to the technical field of bottle caps, the double-tube extrusion bottle cap comprises a hose and a bottle cap arranged at the opening end of the hose, the hose comprises an outer tube and an inner tube, and the outer tube is 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 comprises a lower cap body rotationally connected with the hose, an upper cap body is arranged on the lower cap body in an overturning mode, and a first liquid outlet and a second liquid outlet are formed in the lower cap body; in the rotating stroke of the bottle cap, the following three liquid outlet modes can be achieved: mode 1, when the first liquid outlet is communicated with the second liquid outlet hole and the second liquid outlet is communicated with the first liquid outlet hole, liquid in the inner tube and liquid in the outer tube can be discharged at the same time; in the second mode, when the first liquid outlet hole is communicated with the first liquid outlet, the liquid in the inner pipe can be discharged; and in the third mode, when the second liquid outlet hole is communicated with the second liquid outlet, the liquid in the outer pipe can be discharged.

Description

Technical Field

[0001] The invention relates to the technical field related to bottle caps, in particular to a double-tube extrusion bottle cap. Background Art

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

[0003] In the prior art, the bottles used can generally only hold a single liquid, so users often need to carry multiple bottles containing different liquids, which makes carrying cumbersome and inconvenient to use. Therefore, in order to solve this problem, a patent with announcement number CN111268290B and announcement date May 17, 2024, entitled "A bottle capable of holding two liquid cosmetics", discloses a bottle capable of holding two liquid cosmetics, including a bottle body, an upper sealing cover, and a conduit. The bottle body and the upper sealing cover are threadedly or snap-fitted, and the bottom end of the conduit extends into the bottle body. A base is rotatably installed at the bottom end of the bottle body. A sealing sheet and an isolating member are movably provided inside the bottle body. The top of the isolating member is closed and the bottom is open. The sealing sheet is penetrated by two arc-shaped notches, and the bottom end of the isolating member extends to the lower side of the sealing sheet through the two arc-shaped notches. The present invention can store two different types of liquid cosmetics in different areas in one bottle at the same time through the arrangement of various structures, so that the two cosmetics will not be mixed with each other before opening the bottle for use, thereby maintaining the shelf life of the cosmetics. When the two cosmetics are needed, the two cosmetics can be mixed by simply rotating the base under the bottle, thereby reducing the carrying burden of the user and making it more convenient to use.

[0004] In the prior art, some liquids need to be used in combination with another liquid, but they need to be mixed immediately when used to avoid ineffectiveness after a long period of mixing. Sometimes, depending on the usage, the two matching liquids need to be used separately. The shortcoming of the above patent is that, although the two liquids can be mixed, they cannot be separated after mixing, and it is impossible to use a single liquid alone. Summary of the invention

[0005] The purpose of the invention 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 object, the present invention provides the following technical solutions:

[0007] A double-tube extrusion bottle cap comprises a hose and a bottle cap arranged at the open end of the hose, wherein the hose comprises an outer tube and an inner tube, the outer tube is provided with a first liquid outlet for discharging liquid in the inner tube and a second liquid outlet for discharging liquid in the outer tube; the bottle cap comprises a lower cover rotatably connected to the hose, the lower cover is provided with an upper cover by flipping, and the lower cover is provided with a first liquid outlet and a second liquid outlet; during the rotation stroke of the bottle cap, the following three liquid outlet modes can be realized: mode one, when the first liquid outlet is connected to the second liquid outlet, and the second liquid outlet is connected to the first liquid outlet, the liquid in the inner tube and the liquid in the outer tube can be discharged simultaneously; mode two, when the first liquid outlet is connected to the first liquid outlet, the liquid in the inner tube can be discharged; mode three, when the second liquid outlet is connected to the second liquid outlet, the liquid in the outer tube can be discharged.

[0008] As mentioned above, the upper cover is provided with a first sealing plug corresponding to the first liquid outlet and a second sealing plug corresponding to the second liquid outlet.

[0009] As mentioned above, the body part of the outer tube and the body part of the inner tube are both made of soft materials, and the mouth part of the outer tube and the mouth part of the inner tube are both made of hard materials.

[0010] As mentioned above, three protrusions corresponding to the three liquid outlet modes are arranged in sequence along the circumferential direction inside the lower cover, and three recessed portions are arranged in sequence along the circumferential direction at the mouth of the outer tube; in any liquid outlet mode, the three protrusions correspond to the three recessed portions one by one, and each protrusion is plugged into the corresponding recessed portion.

[0011] As mentioned above, in the rotation direction of the bottle cap, there is a projection overlap portion between any protruding portion and any recessed portion, and in the insertion stroke between any protruding portion and any recessed portion, the resistance exerted by the recessed portion on the protruding portion first increases and then decreases.

[0012] As mentioned above, a paddle is further provided in the lower cover, and three paddle grooves are sequentially arranged along the circumferential direction at the tube mouth of the outer tube. In the switching stroke of the three liquid outlet modes, the paddle generates sound feedback after being paddled by any of the paddle grooves.

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

[0014] As mentioned above, a second elastic member is provided at the rotation connection position between the lower cover and the outer tube, and the resistance given to the lower cover by the second elastic member gradually increases during the rotation of the lower cover in any direction.

[0015] As mentioned above, the maximum elastic force of the first elastic member is not sufficient to drive any protrusion to separate from the corresponding inserted recess.

[0016] As mentioned above, the lower cover is also provided with a trigger member. During the closing stroke of the upper cover, the trigger member drives each protrusion to separate from the corresponding plug-in recessed portion based on the squeezing action of the upper cover, and based on the rebound force of the second elastic member, the liquid outlet mode returns to mode one.

[0017] The beneficial effect of the present invention is that by setting the first liquid outlet hole, the second liquid outlet hole, the first liquid outlet port and the second liquid outlet port, three different connection modes can be realized during the rotation 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, so that different liquid outlet modes can be switched according to actual usage conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the double-tube extrusion bottle cap provided in an embodiment of the present invention when the upper cover and the lower cover are closed;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the upper cover and the lower cover of the double-tube extrusion bottle cap provided in an embodiment of the present invention when they are closed;

[0021] Figure 3 An exploded view of the upper cover and the lower cover of the double-tube extrusion bottle cap provided in an embodiment of the present invention when they are closed;

[0022] Figure 4 It is a schematic diagram of the planar structure of the inner part of the lower cover and the tube opening part of the outer tube of the double-tube extrusion bottle cap provided in an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the double-tube extrusion bottle cap provided in an embodiment of the present invention when the upper cover and the lower cover are opened;

[0024] Figure 6 It is a schematic cross-sectional structure diagram of the upper cover and the lower cover of the double-tube extrusion bottle cap provided in an embodiment of the present invention when they are opened;

[0025] Figure 7 It is an exploded view of the upper cover and the lower cover of the double-tube extrusion bottle cap provided in an embodiment of the present invention when they are opened.

[0026] Description of reference numerals:

[0027] 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 cover; 21. Lower cover; 22. First liquid outlet; 23. Second liquid outlet; 24. Annular sleeve; 25. Annular groove; 26. Raised portion; 27. Concave portion; 28. Paddle; 29. ​​Paddle groove; 30. Button; 31. First elastic member; 32. Active buckle; 33. Passive buckle; 34. Second elastic member; 35. Ring body; 36. Third elastic member. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, Figure 1 To Attachment Figure 7 The present invention is further described in detail.

[0029] The embodiment of the present invention provides a double-tube extrusion bottle cap 2, comprising a hose 1 and a bottle cap 2 arranged at the open end of the hose 1, wherein the hose 1 comprises an outer tube 10 and an inner tube 11, wherein 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 cover 21 rotatably connected to the hose 1, wherein an upper cover 20 is arranged on the lower cover 21 in a flipping manner, wherein the lower cover 21 is provided with a first liquid outlet 22 and a second liquid outlet 13. Liquid outlet 23; in the rotation stroke of the bottle cap 2, the following three liquid outlet modes can be realized: Mode 1, when the first liquid outlet 22 is connected with the second liquid outlet hole 13, and the second liquid outlet 23 is connected 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 2, when the first liquid outlet hole 12 is connected with the first liquid outlet 22, the liquid in the inner tube 11 can be discharged; Mode 3, when the second liquid outlet hole 13 is connected with the second liquid outlet 23, the liquid in the outer tube 10 can be discharged.

[0030] Specifically, in the prior art, the bottles used can generally only hold a single liquid, so users often need to carry multiple bottles containing different liquids, which makes carrying cumbersome and inconvenient to use. Therefore, in order to solve this problem, in the prior art, the bottles containing two liquids are combined and arranged, and a cavity for storing two pastes or liquids is provided in a hose 1. When using, only the two liquids need to be mixed. However, some liquids need to be used in combination with another liquid, but they need to be mixed and used immediately when used to avoid ineffectiveness after a long mixing time. Sometimes, depending on the usage, it is necessary to use the two matching liquids separately. Therefore, in order to solve the above problem, in this embodiment, the hose 1 is divided into an outer tube 10 and an inner tube 11. The inner wall of the outer tube 10 and the outer wall of the inner tube 11 form a first cavity, which is used to store liquid A. The inner tube 11 itself is a second cavity, which is used to store liquid B. The nozzle of the inner tube 11 is inserted into the nozzle of the outer tube 10. The nozzle of the outer tube 10 has a circular radial cross section, and the nozzle of the inner tube 11 has a rectangular radial cross section, that is, the nozzle of the inner tube 11 is There is a channel for discharging liquid A between the upper cover 20 and the nozzle part of the outer tube 10, and a first liquid outlet hole 12 and a second liquid outlet hole 13 are opened on the nozzle part of the outer tube 10, wherein the first liquid outlet hole 12 is communicated with the second cavity for discharging liquid B. The bottle cap 2 is divided into an upper cover 20 and a lower cover 21, and the lower cover 21 is rotatably arranged on the nozzle part of the outer tube 10 by means of a snap connection. This is a prior art and will not be described in detail. The upper cover 20 is arranged on the lower cover 21 by means of a flipping, and an annular sleeve 24 is provided on the upper cover 20, and an annular slot 25 is provided on the lower cover 21. During the process of flipping the upper cover 20 toward the lower cover 21, the annular sleeve 24 is gradually engaged with the annular groove 25, that is, in the axial direction, the annular groove 25 restricts the movement of the annular sleeve 24 to a certain extent, that is, when an external force is applied, the upper cover 20 can be flipped toward the direction away from the lower cover 21, wherein the lower cover 21 is provided with a first liquid outlet 22 and a second liquid outlet 23. By rotating the lower cover 21, the arrangement and combination of the first liquid outlet hole 12, the second liquid outlet hole 13, the first liquid outlet 22 and the second liquid outlet 23 can be used to realize three liquid outlet modes:

[0031] Mode 1: When the first liquid outlet 22 is connected to the second liquid outlet 13 and the second liquid outlet 23 is connected to 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 2: When the first liquid outlet 12 is connected to the first liquid outlet 22, the liquid in the inner tube 11 can be discharged; Mode 3: When the second liquid outlet 13 is connected to the second liquid outlet 23, the liquid in the outer tube 10 can be discharged;

[0032] In the axial direction, the inner wall of the lower cover 21 slides and fits with the outer wall of the tube mouth of the outer tube 10, that is, when in mode two, the second liquid outlet 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 tube mouth of the outer tube 10; when in mode three, the first liquid outlet 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 tube mouth of the outer tube 10.

[0033] The beneficial effect of this embodiment is that by providing the first liquid outlet hole 12, the second liquid outlet hole 13, the first liquid outlet port 22 and the second liquid outlet port 23, three different communication modes can be realized during the rotation of the bottle cap 2, so that the liquid in the outer tube 10 and the liquid in the inner tube 11 can be discharged together or separately, so that different liquid outlet modes can be switched according to actual usage conditions.

[0034] 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, in the three liquid outlet modes, after the upper cover 20 and the lower cover 21 are closed, the sealing effect between the upper cover 20 and the lower cover 21 is difficult to 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 parts of the upper cover 20, and the first sealing plug 14 and the second sealing plug 15 both have a certain elastic deformation ability. When the lower cover 21 and the upper cover 20 are closed, the first sealing plug 14 and the second sealing plug 15 are provided. The sealing plug 14 is plugged into the first liquid outlet 22, and the second sealing plug 15 is plugged into the second liquid outlet 23, so that liquid leakage can be more effectively avoided. In an optional embodiment, the tube body of the outer tube 10 and the tube body of the inner tube 11 are both made of soft materials, and the tube mouth part of the outer tube 10 and the tube mouth part of the inner tube 11 are both made of hard materials. In this way, the liquid can be discharged easily by squeezing the hose 1, and the use of hard material for the tube mouth part can avoid squeezing of the tube mouth part, resulting in a gap between the first sealing plug 14 and the first liquid outlet 22, and a gap between the second sealing plug 15 and the second liquid outlet 23.

[0035] Furthermore, three protrusions 26 corresponding to the three liquid discharge modes are arranged in sequence along the circumferential direction inside the lower cover 21, and three recesses 27 are arranged in sequence along the circumferential direction at the mouth of the outer tube 10; in any liquid discharge mode, the three protrusions 26 correspond to the three recesses 27 one by one, and each protrusion 26 is plugged into the corresponding recess 27; in the rotation direction of the bottle cap 2, there is a part where the projections of any protrusion 26 and any recess 27 overlap, and in the plugging stroke of any protrusion 26 and any recess 27, the resistance of the recess 27 to the protrusion 26 first increases and then decreases.

[0036] Specifically, when any liquid discharge mode is required, the position of the lower cover 21 needs to be restricted to avoid the problem of switching the liquid discharge mode or failing to realize the three liquid discharge modes after accidentally touching the bottle cap 2. Therefore, in this embodiment, three protrusions 26 are arranged in sequence along the circumferential direction inside the lower cover 21, and three recesses 27 are arranged along the circumferential direction at the mouth of the outer tube 10. During the rotation stroke of the lower cover 21, any protrusion 26 can be plugged with any recess 27. In the plugging stroke of the protrusion 26 and the recess 27, there will be a gap between the protrusion 26 and the recess 27. The wedge-shaped fitting part will produce a force that hinders the insertion of the protrusion 26 and the recessed part 27, and when the protrusion 26 and the recessed part 27 are separated, there is also a wedge-shaped fitting part between the protrusion 26 and the recessed part 27, and the wedge-shaped fitting part will hinder the separation of the protrusion 26 and the recessed part 27. In this way, in any liquid discharge mode, the lower cover 21 can be restricted from rotating on the outer tube 10 to a certain extent, and in the rotation stroke of the lower cover 21, the resistance provided by the wedge-shaped fitting part can provide a certain feel for the user, and it has been determined that the liquid discharge mode has been switched successfully.

[0037] In an optional embodiment, the interior of the lower cover 21 is further arranged along the circumferential direction with paddles 28 corresponding to the three liquid outlet modes, and the tube mouth portion of the outer tube 10 is further arranged along the circumferential direction with three paddle grooves 29. During the switching stroke of the three liquid outlet modes, the paddle 28 is moved by the paddle groove 29 to generate sound feedback. Specifically, the sound is generated by the moving action between the paddle 28 and any paddle groove 29, and sound feedback can also be provided to the user, thereby better determining the switching of the liquid outlet mode.

[0038] Furthermore, a button 30 is slidably provided on the upper cover 20, a first elastic member 31 is provided between the button 30 and the upper cover 20, an active snap buckle 32 is provided on the button 30, and a passive snap buckle 33 is provided on the lower cover 21. When the upper cover 20 is in a closed position, the active snap buckle 32 is snapped with the passive snap buckle 33 based on the elastic force of the first elastic member 31; when the upper cover 20 needs to be opened, the active snap buckle 32 is disengaged from the passive snap buckle 33 based on the pressing force.

[0039] Specifically, in the aforementioned embodiment, after the upper cover 20 and the lower cover 21 are closed, the locking between the two is that an annular sleeve 24 is provided on the upper cover 20, and an annular groove 25 is provided on the lower cover 21. During the flipping process of the upper cover 20 toward the lower cover 21, the annular sleeve 24 is gradually engaged with the annular groove 25, that is, in the axial direction, the annular groove 25 restricts the movement of the annular sleeve 24 to a certain extent. When the liquid in the hose 1 needs to be used, the user applies a force to the upper cover 20 to open the upper cover 20 and the lower cover 21. However, when the external force accidentally hits the upper cover 20, the upper cover 20 and the lower cover 21 may be opened, which will cause the first sealing plug 14 to be disengaged from the first liquid outlet 22, and the second sealing plug 15 to be disengaged from the second liquid outlet 23, thereby causing the liquid to flow out of the hose 1.

[0040] Therefore, based on the above problems, in this embodiment, on the basis of the first locking achieved by the cooperation between the annular sleeve 24 and the annular 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 provided on the upper cover 20, and the position of the button 30 is radially opposite to the position where the upper cover 20 is connected to the lower cover 21, and the sliding direction of the button 30 is also parallel to the radial direction, and in the sliding direction, a first elastic member 31 is provided 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 along the sliding direction, an active buckle 32 is arranged on the button 30, and the bayonet of the active buckle 32 is a V-shaped structure, and a passive buckle 33 is arranged on the lower cover 21, and the structure of the passive buckle 33 is adapted to the bayonet structure of the active buckle 32, and under the elastic force of the first elastic member 31, when the active buckle 32 is engaged with the passive buckle 33, the passive buckle 33 will not slide along the sliding direction of the button 30 In the process of the upper cover 20 deflecting toward the lower cover 21, there is a wedge-shaped fit between the active buckle 32 and the passive buckle 33, and the wedge-shaped fit realizes the squeezing effect between the active buckle 32 and the passive buckle 33, so that the active buckle 32 drives the elastic force of the first elastic member 31 to increase, that is, in the deflection direction of the upper cover 20, the squeezing effect between the active buckle 32 and the passive buckle 33 makes the active buckle 32 gradually open with the passive buckle 33 in the sliding direction of the button 30, so that the bayonet of the active buckle 32 can be engaged with the passive buckle 33, and the second locking of the upper cover 20 and the lower cover 21 is realized. When the upper cover 20 needs to be opened, the user presses the button 30 in the first step, and the button 30 drives the active buckle 32 to move along the sliding direction, so that its bayonet is separated from the passive buckle 33, and then pushes the upper cover 20 to deflect in the direction away from the lower cover 21, so that the second locking can be released first and then the first locking can be released. In this way, the purpose of preventing accidental contact can be achieved.

[0041] Furthermore, a second elastic member 34 is provided at the rotational connection position between the lower cover 21 and the outer tube 10. During the rotation of the lower cover 21 in any direction, the resistance given to the lower cover 21 by the second elastic member 34 gradually increases.

[0042] Specifically, in the aforementioned embodiment, during the switching process of the three liquid discharge modes, the hand feeling and sound feedback provided to the user are basically the same, and after the previous use, the liquid discharge mode remains the previous one. When it is needed to be used next time, if the required mode is required, it needs to be adjusted, but the hand feeling and sound feedback provided to the user are basically the same, making it difficult for the user to quickly and accurately switch to the desired liquid discharge mode. Therefore, in this embodiment, a second elastic member 34 is provided between the lower cover 21 and the outer tube 10, and the second elastic member 34 provides a gradually increasing resistance for the rotation of the lower cover 21, so that the initial liquid discharge mode is mode 1. When the lower cover 21 is rotated clockwise or counterclockwise, the elastic force of the second elastic member 34 will gradually increase, so that the damping hand feeling provided to the user is also gradually increased, so that the user can better judge the liquid discharge mode. Among them, the maximum elastic force of the first elastic member 31 is not enough to drive any protrusion 26 to separate from the corresponding plug-in recessed portion 27, that is, in any liquid discharge mode, the lower cover 21 needs to be restricted to a certain extent (the specific reasons are described in detail in the aforementioned embodiment, and no excessive elaboration is made here).

[0043] Furthermore, a trigger member is also provided on the lower cover 21. During the closing stroke of the upper cover 20, the trigger member drives each protrusion 26 to separate from the corresponding recessed portion 27 based on the squeezing action of the upper cover 20. Based on the rebound force of the second elastic member 34, the liquid outlet mode returns to mode one.

[0044] Specifically, in order to facilitate the user to accurately switch the liquid discharge mode, the initial liquid discharge mode is set to mode one in this embodiment, and after each use, after the lower cover 21 and the upper cover 20 are closed, the liquid discharge mode can be switched back to mode one, that is, the trigger member is to arrange the three protrusions 26 together on an annular body 35, and the annular body 35 is slidably arranged on the lower cover 21 in the axial direction, and in the sliding direction, a third elastic member 36 is provided between the annular body 35 and the lower cover 21, wherein the passive buckle 33 is fixedly connected to the annular body 35, and based on the elastic force of the third elastic member 36, the annular body 35 has a tendency to always drive the three protrusions 26 to be plugged into the three recessed portions 27, and in the deflection stroke of the upper cover 20 toward the direction close to the lower cover 21, the active buckle 32 and the passive buckle 33 are squeezed due to the squeezing. The active snap buckle 32 can only move along the sliding direction of the button 30, and the active snap buckle 32 can give the passive snap buckle 33 a force to move along the axial direction, so that the passive snap buckle 33 can drive the annular body 35 to move, and the annular body 35 drives the three protrusions 26 and the three recessed parts 27 to disengage from the insertion. After the three protrusions 26 and the three recessed parts 27 are completely disengaged, the rebound force of the second elastic member 34 will cause the lower cover 21 to rotate, so that the liquid discharge mode returns to mode one. After the upper cover 20 and the lower cover 21 are opened, the annular body 35 will drive the three protrusions 26 and the three recessed parts 27 to be plugged under the rebound force of the third elastic member 36.

[0045] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the protection of the present invention.

Claims

1. A double-tube extrusion bottle cap, comprising a hose and a bottle cap disposed at the open end of the hose, characterized in that: The hose comprises an outer tube and an inner tube, the outer tube is provided with a first liquid outlet for discharging liquid in the inner tube and a second liquid outlet for discharging liquid in the outer tube; the bottle cap comprises a lower cover rotatably connected to the hose, an upper cover is provided on the lower cover in a flipping manner, and the lower cover is provided with a first liquid outlet and a second liquid outlet; during the rotation stroke of the bottle cap, the following three liquid outlet modes can be realized: Mode 1: when the first liquid outlet is connected to the second liquid outlet, and the second liquid outlet is connected to the first liquid outlet, the liquid in the inner tube and the liquid in the outer tube can be discharged at the same time; Mode 2: when the first liquid outlet hole is connected to the first liquid outlet port, the liquid in the inner tube can be discharged; Mode three, when the second liquid outlet hole is connected to the second liquid outlet port, the liquid in the outer tube can be discharged.

2. The double-tube extrusion bottle cap according to claim 1, characterized in that: The upper cover is provided with a first sealing plug corresponding to the first liquid outlet and a second sealing plug corresponding to the second liquid outlet.

3. The double-tube extrusion bottle cap according to claim 1, characterized in that: The tube body part of the outer tube and the tube body part of the inner tube are both made of soft materials, and the tube mouth part of the outer tube and the tube mouth part of the inner tube are both made of hard materials.

4. The double-tube extrusion bottle cap according to claim 3, characterized in that: The inside of the lower cover is provided with three raised portions corresponding to the three liquid outlet modes arranged in sequence along the circumferential direction, and the tube mouth of the outer tube is provided with three recessed portions arranged in sequence along the circumferential direction; in any liquid outlet mode, the three raised portions correspond to the three recessed portions one by one, and each raised portion is plugged into the corresponding recessed portion.

5. The double-tube extruded bottle cap according to claim 4, characterized in that: In the rotation direction of the bottle cap, there is a projection overlap part between any protruding part and any recessed part. In the insertion stroke of any protruding part and any recessed part, the resistance of the recessed part to the protruding part first increases and then decreases.

6. The double-tube extrusion bottle cap according to claim 3, characterized in that: A paddle is also provided inside the lower cover, and three paddle grooves are sequentially arranged along the circumferential direction at the tube mouth of the outer tube. During the switching stroke of the three liquid discharge modes, the paddle generates sound feedback after being paddled by any of the paddle grooves.

7. The double-tube extrusion bottle cap according to claim 3, characterized in that: A button is slidably provided on the upper cover, a first elastic member is provided between the button and the upper cover, an active buckle is provided on the button, and a passive buckle is provided on the lower cover. When the upper cover is in a closed position, the active buckle is engaged with the passive buckle based on the elastic force of the first elastic member; when the upper cover needs to be opened, the active buckle is disengaged from the passive buckle based on the pressing force.

8. The double-tube extrusion bottle cap according to claim 7, characterized in that: A second elastic member is provided at the rotation connection position between the lower cover and the outer tube. During the rotation of the lower cover in any direction, the resistance given to the lower cover by the second elastic member gradually increases.

9. The double-tube extrusion bottle cap according to claim 8, characterized in that: The maximum elastic force of the first elastic member is insufficient to drive any protrusion to separate from the corresponding inserted recess.

10. The double-tube extrusion bottle cap according to claim 9, characterized in that: The lower cover is also provided with a trigger member. During the closing stroke of the upper cover, the trigger member drives each protrusion to separate from the corresponding inserted recessed part based on the squeezing effect of the upper cover, and based on the rebound force of the second elastic member, the liquid discharge mode returns to mode one.

Images