Dropper cover and dropper bottle

Abstract

The utility model discloses a dropper cover and a dropper bottle. The dropper cover comprises a dropper structure, a button, an inner tube and an outer tube, wherein the button is arranged above the dropper structure and can move up and down, the inner tube is sleeved outside the dropper structure and can be matched with the button in a rotation stopping manner, the outer tube is sleeved outside the inner tube, and the inner tube is rotatably arranged relative to the outer tube; wherein the button is provided with a protruding part, and the inner pipe is provided with an open groove which allows the protruding part to penetrate through and can avoid the protruding part to move up and down; the inner wall of the outer pipe is provided with a matching part which is matched with the protruding part so that the button can be driven to move upwards or downwards in the rotating process of the button. According to the utility model, the protruding part of the button is matched with the open slot of the inner wall, so that the button can move upwards or downwards in the rotating process; the liquid in the bottle body can be quantitatively sucked by the dropper structure only by rotating the button, the structure is simple, and the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of containers, in particular to a dropper cover and a dropper bottle. Background Art

[0002] For liquid cosmetics that are applied on the skin, it is difficult to accurately control the specific location when applying the makeup due to the fluidity of the liquid. In order to facilitate the use of liquid cosmetics that are applied on the skin, a dropper structure that can be connected to the cosmetic container is selected. When applying makeup, the cosmetics can be absorbed through the dropper structure and then accurately dripped toward the part that needs to be applied. This is time-saving and accurate. At present, most dropper structures used for cosmetics use a manual method of directly pressing the rubber head to take in and out the liquid.

[0003] In order to make liquid collection more convenient, a rotary dropper structure has become increasingly popular. However, at present, most of the rotary dropper structures used by operators have relatively complex internal structures and cannot achieve automatic quantitative liquid collection. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is to provide a dropper cover and a dropper bottle, which can realize the upward or downward movement of the button during rotation through the cooperation between the raised part of the button and the groove of the inner wall; the dropper structure can quantitatively absorb the liquid in the bottle body by simply rotating the button, and the structure is simple and easy to operate.

[0006] (II) Technical solution

[0007] The solution adopted by the utility model to solve the above technical problems is a dropper cover, comprising a dropper structure, a button that can move up and down and is arranged above the dropper structure, an inner tube that is sleeved outside the dropper structure and can cooperate with the button to stop rotation, and an outer tube that is sleeved outside the inner tube, and the inner tube is rotatably arranged relative to the outer tube; wherein the button is provided with a protrusion, and the inner tube is provided with a groove for the protrusion to pass through and can avoid the protrusion from moving up and down; and the inner wall of the outer tube is provided with a matching portion that cooperates with the protrusion so that the button can drive the button to move up or down during rotation.

[0008] In some embodiments, the outer tube includes a first cavity running through the upper and lower parts to ensure that the dropper structure can extend out of the bottom end of the outer tube for easy liquid absorption; and part of the button can extend out of the top end of the outer tube for easy rotation by the user; the inner tube includes a second cavity running through the upper and lower parts to ensure that the dropper structure can extend out of the bottom end of the inner tube for easy liquid absorption; and part of the button can extend from the top end of the inner tube into the second cavity to achieve the cooperation between the protrusion and the groove.

[0009] By adopting the above scheme, the inner tube and the button can cooperate to prevent rotation, so that the button and the inner tube can rotate synchronously; through the cooperation between the raised part of the button and the groove of the inner wall, the button and the inner tube can move up or down during the synchronous rotation; the dropper structure can quantitatively absorb the liquid in the bottle body by only rotating the button, which has a simple structure and is easy to operate.

[0010] In some embodiments, the mating portion includes at least one mating groove formed by an inward depression of the inner wall portion of the outer tube, and the top of the mating groove is provided with a mating end surface extending along the circumference of the inner wall of the outer tube and inclined from top to bottom; when the button is rotated, the protrusion can move up or down along the mating end surface.

[0011] In some embodiments, the mating portion includes two mating grooves arranged at intervals, and correspondingly, the button is provided with two protrusions, and the inner tube is provided with two slots; the above structure can make the rotation of the button more stable.

[0012] By adopting the above scheme, during the synchronous rotation of the inner tube and the button, the raised portion of the button passes through the groove of the inner tube and abuts against the mating end surface, and due to the setting of the groove, the up and down movement of the raised portion will not be restricted, and the raised portion will move along the trajectory of the mating end surface, thereby achieving upward or downward movement; and when the raised portion moves along the mating end surface, quantitative liquid absorption can be achieved.

[0013] In some embodiments, the mating groove includes a first mating end face and a second mating end face respectively connected to both ends of the mating groove; a limiting space is formed between the first mating end face and the second mating end face for limiting the rotation range of the button; and when the button is rotated until the protrusion abuts against the first mating end face, the button is in a fully open state; when the button is rotated until the protrusion abuts against the second mating end face, the button is in a fully closed state.

[0014] In some embodiments, a raised rib is provided on the outer wall of the inner tube directly below the groove, and the rib can rotate along the mating groove; and when the raised portion abuts against the first end face, the rib abuts against the first mating end face; when the raised portion abuts against the second mating end face, the rib abuts against the second mating end face.

[0015] By adopting the above scheme, the raised portion moves in the limited space between the first mating end surface and the second mating end surface; and the rib moves in the limited space between the first mating end surface and the second mating end surface; the double limitation makes the positioning more accurate, thereby ensuring that the rotation of the button can accurately ensure the quantitative liquid absorption of the dropper structure.

[0016] In some embodiments, a rotation groove is provided on the outer wall of the inner tube at the lower end, and correspondingly, a rotation part capable of rotationally cooperating with the rotation groove is provided on the inner wall of the outer tube at the lower end.

[0017] In some embodiments, the inner wall of the outer tube is located above the matching portion and extends inward to form an extension wall, and the top end of the inner tube is connected to the extension wall.

[0018] By adopting the above scheme, through the cooperation between the rotating part and the rotating groove, and the cooperation between the top end of the inner tube and the extension wall, the rotation connection between the inner tube and the outer tube can be limited to prevent the inner tube from moving up and down during the rotation process, so that the rotation of the button is smoother, thereby ensuring the quantitative liquid absorption of the dropper structure.

[0019] In some embodiments, the dropper structure includes a dropper body and a piston body connected to the top end of the dropper body, the piston body and the interior of the dropper body are interconnected to form a liquid suction cavity; the button includes an abutment portion that abuts against the top end of the piston body, and when the button is driven to move downward, the abutment portion can apply a downward force to the piston body to cause it to absorb liquid.

[0020] In some embodiments, the piston body is made of silicone material. When the button is driven to move downward, the abutment portion can exert a downward force on the piston body to cause it to be compressed and deformed, thereby achieving the purpose of liquid absorption.

[0021] In some embodiments, the button has a top portion extending downward to form the abutment portion.

[0022] In some embodiments, the button is provided with an open cavity with an opening at the bottom end, and the piston body can extend into the open cavity so that the abutment portion can be connected with the piston body.

[0023] In some embodiments, a snap-fit ​​groove is provided on the outer wall of the piston body, and correspondingly, a snap-fit ​​portion capable of cooperating with the snap-fit ​​groove is provided on the inner wall of the inner tube.

[0024] In some embodiments, the inner wall of the inner tube is further provided with an annular convex rib, and the annular convex rib abuts against the raised outer wall of the piston body, thereby improving the connection stability between the piston body and the inner tube; the top open end of the dropper body is provided with an annular protrusion, and the inner wall of the piston body is provided with an annular groove matched with the annular protrusion to achieve a fixed connection between the piston body and the dropper body, and at the same time, it can also improve the sealing of the connection between the two to ensure the sealing of the liquid suction cavity; and the outer wall of the dropper body is fixedly connected to the piston body through a connecting frame, thereby improving the connection strength between the dropper body and the piston body.

[0025] By adopting the above scheme, the fixed connection between the piston body and the inner tube can be achieved through the cooperation of the clamping groove and the clamping part, and the dropper structure will only rotate synchronously with the inner tube. Then, when the button moves downward during the rotation, it will press the piston body to make it absorb liquid.

[0026] In some embodiments, the button includes a button body, and the button body includes an upper half and a lower half arranged from top to bottom, the upper half extends out of the inner tube, and the lower half is placed in the inner tube, and the outer wall of the lower half is provided with the protrusion; wherein the outer diameter of the lower half is greater than the outer diameter of the upper half, so that a contact end surface is formed at the connection between the lower half and the upper half; an operating body is sleeved on the outer wall of the upper half, and the bottom end of the operating body is abutted against the contact end surface.

[0027] In some embodiments, the top inner part of the button body protrudes downward to form the abutment portion; the outer wall of the operating body at its top protrudes radially outward to form a limiting plate, and the limiting plate will abut against the top end of the outer tube when the button rotates and moves downward, thereby preventing the button from extending into the outer tube as a whole during rotation.

[0028] In some embodiments, the outer wall of the upper part is provided with a protrusion, and correspondingly, the inner wall of the operating body is provided with a recess, and the fixed connection between the operating body and the button body can be achieved through the cooperation of the protrusion and the recess; at the same time, a convex strip is provided on the outer peripheral wall of the upper part to enhance the friction between the operating body and the button body, thereby ensuring that when the operating body is rotated, the button body will rotate synchronously therewith without deviation.

[0029] The solution adopted by the utility model to solve the above technical problem is a dropper bottle, which is characterized by comprising the dropper cover as mentioned above and a bottle body connected to the dropper cover and used for containing liquid.

[0030] In some embodiments, the bottle body is threadedly connected to the inner tube to facilitate disassembly and assembly.

[0031] (III) Beneficial effects

[0032] Compared with the prior art, the utility model designs a dropper cover and a dropper bottle.

[0033] (1) The utility model can realize synchronous rotation of the button and the inner tube by the anti-rotation cooperation between the inner tube and the button; the button and the inner tube can move up or down during the synchronous rotation by the cooperation between the raised part of the button and the groove of the inner wall; the dropper structure can quantitatively absorb the liquid in the bottle body by simply rotating the button, which has a simple structure and is easy to operate;

[0034] (2) The utility model allows the protrusion to move in the limited space between the first mating end surface and the second mating end surface; and the rib to move in the limited space between the first mating end surface and the second mating end surface; double limitation makes positioning more accurate, thereby ensuring that the rotation of the button can accurately ensure the quantitative liquid absorption of the dropper structure;

[0035] (3) The utility model can achieve a fixed connection between the piston body and the inner tube through the cooperation of the clamping groove and the clamping portion, so that the dropper structure can only rotate synchronously with the inner tube. Then, when the button moves downward during the rotation process, it will press the piston body to make it absorb liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a schematic diagram of the structure of a dropper cap of the utility model (the button is in a fully opened state);

[0038] Figure 2 This is an exploded view of a dropper cover of the utility model;

[0039] Figure 3 This is a cross-sectional view of a dropper cap of the utility model (the button is in a fully opened state);

[0040] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0041] Figure 5 for Figure 3The enlarged schematic diagram of point B in the middle;

[0042] Figure 6 This is another cross-sectional view of a dropper cap of the utility model (the button is in a fully opened state);

[0043] Figure 7 It is a structural schematic diagram of the outer tube of the utility model;

[0044] Figure 8 It is a structural schematic diagram of the inner tube of the utility model;

[0045] Fig. 9 It is a structural schematic diagram of the button body of the utility model;

[0046] Fig.10 This is a cutaway exploded view of a dropper cap of the utility model (the button is in a fully opened state);

[0047] Fig.11 for Fig.10 The enlarged schematic diagram at C in the middle;

[0048] Fig.12 This is a schematic diagram of the structure of a dropper cover of the utility model (the button is in a completely closed state);

[0049] Fig.13 It is a cross-sectional view of a dropper cap of the utility model (the button is in a completely closed state).

[0050] The names of the components corresponding to the reference numerals in the figure are: 100, dropper structure; 10, dropper body; 101, annular protrusion; 102, connecting frame; 11, piston body; 111, clamping groove; 112, annular groove; 12, liquid suction cavity; 200, button; 20, protrusion; 21, abutment; 22, upper part; 221, protrusion; 222, convex strip; 23, lower part; 24, abutment end surface; 25, operating body; 251, limit piece; 252, depression; 26, cavity; 27, button body; 300, inner tube; 30, slot; 31, rib; 32, rotating groove; 33, clamping portion; 34, second cavity; 35, annular rib; 400, outer tube; 40, matching portion; 401, matching groove; 401a, matching end face; 401b, first matching end face; 401c, second matching end face; 402, limiting space; 41, rotating portion; 42, first cavity; 43, extension wall. DETAILED DESCRIPTION

[0051] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0052] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0054] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0055] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0056] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0057] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0058] like Figure 1-Figure 13 As shown, the utility model provides a dropper cover, comprising a dropper structure 100, a button 200 that can move up and down and is arranged above the dropper structure 100, an inner tube 300 that is sleeved outside the dropper structure 100 and can cooperate with the button 200 to stop rotation, and an outer tube 400 that is sleeved outside the inner tube 300, and the inner tube 300 is rotatably arranged relative to the outer tube 400; wherein the button 200 is provided with a protrusion 20, and the inner tube 300 is provided with a groove 30 for the protrusion 20 to pass through and can avoid the protrusion 20 from moving up and down; the inner wall of the outer tube 400 is provided with a matching portion 40 that cooperates with the protrusion 20 so that the button 200 can drive the button 200 to move up or down during rotation. In some embodiments, the outer tube 400 includes a first cavity 42 that runs through the upper and lower parts to ensure that the dropper structure 100 can extend out of the bottom end of the outer tube 400 for easy liquid absorption; and part of the button 200 can extend out of the top end of the outer tube 400 for easy rotation by the user; the inner tube 300 includes a second cavity 34 that runs through the upper and lower parts to ensure that the dropper structure 100 can extend out of the bottom end of the inner tube 300 for easy liquid absorption; and part of the button 200 can extend from the top end of the inner tube 300 into the second cavity 34 to achieve the cooperation between the protrusion 20 and the groove 30. By adopting the above scheme, the button 200 and the inner tube 300 can be rotated synchronously through the anti-rotation cooperation between the inner tube 300 and the button 200; through the cooperation between the raised portion 20 of the button 200 and the groove 30 of the inner wall, the button 200 and the inner tube 300 can be moved up or down during the synchronous rotation; the dropper structure 100 can quantitatively absorb the liquid in the bottle body by only rotating the button 200, which has a simple structure and is easy to operate.

[0059] In some embodiments, the mating portion 40 includes a mating groove 401 formed by the inner wall portion of the outer tube 400 being recessed inwardly, and the top of the mating groove 401 is provided with a mating end face 401a extending along the circumference of the inner wall of the outer tube 400 and inclined from top to bottom; during the rotation of the button 200, the protrusion 20 can move up or down along the mating end face 401a. In some embodiments, the mating portion 40 includes two mating grooves 401 arranged at intervals, and correspondingly, the button 200 is provided with two protrusions 20, and the inner tube 300 is provided with two slots 30; the above structure can make the rotation of the button 200 more stable. By adopting the above scheme, during the synchronous rotation of the inner tube 300 and the button 200, the raised portion 20 of the button 200 passes through the groove 30 of the inner tube 300 and abuts against the mating end face 401a, and due to the setting of the groove 30, the up and down movement of the raised portion 20 will not be restricted, and the raised portion 20 will move along the trajectory of the mating end face 401a, thereby achieving upward or downward movement; and when the raised portion 20 moves along the mating end face 401a, quantitative liquid absorption can be achieved. In some embodiments, the mating groove 401 includes a first mating end face 401b and a second mating end face 401c respectively connected to the two ends of the mating groove 401; a limiting space 402 for limiting the rotation range of the button 200 is formed between the first mating end face 401b and the second mating end face 401c; and, when the button 200 is rotated until the protrusion 20 abuts against the first mating end face 401b, the button 200 is in a fully open state; when the button 200 is rotated until the protrusion 20 abuts against the second mating end face 401c, the button 200 is in a fully closed state. In some embodiments, a raised rib 31 is provided on the outer wall of the inner tube 300 directly below the slot 30, and the rib 31 can rotate along the matching groove 401; and when the protrusion 20 abuts against the first end face, the rib 31 abuts against the first matching end face 401b; when the protrusion 20 abuts against the second matching end face 401c, the rib 31 abuts against the second matching end face 401c. With the above solution, the protrusion 20 moves in the limited space 402 between the first matching end face 401b and the second matching end face 401c; and the rib 31 moves in the limited space 402 between the first matching end face 401b and the second matching end face 401c; double limiting makes the positioning more accurate, thereby ensuring that the rotation of the button 200 can accurately ensure the quantitative liquid absorption of the dropper structure 100.

[0060] In some embodiments, the inner tube 300 is provided with a rotation groove 32 on its outer wall at the lower end, and correspondingly, the outer tube 400 is provided with a rotation portion 41 on its inner wall at the lower end that can be rotatably matched with the rotation groove 32. In some embodiments, the inner wall of the outer tube 400 is located above the matching portion 40 and extends inward to form an extension wall 43, and the top end of the inner tube 300 is connected to the extension wall 43. With the above scheme, the rotation connection between the inner tube 300 and the outer tube 400 can be limited by the cooperation between the rotation portion 41 and the rotation groove 32, and the cooperation between the top end of the inner tube 300 and the extension wall 43, so as to prevent the inner tube 300 from moving up and down during the rotation process, so that the button 200 can rotate more smoothly, thereby ensuring the quantitative liquid absorption of the dropper structure 100.

[0061] In some embodiments, the dropper structure 100 includes a dropper body 10, and a piston body 11 connected to the top of the dropper body 10, the piston body 11 and the interior of the dropper body 10 are mutually connected, and form a liquid suction cavity 12; the button 200 includes an abutment portion 21 that abuts against the top of the piston body 11, and when the button 200 is driven to move downward, the abutment portion 21 can give the piston body 11 a downward force to make it absorb liquid. In some embodiments, the piston body 11 is made of silicone material, and when the button 200 is driven to move downward, the abutment portion 21 can give the piston body 11 a downward force to make it deform under pressure, thereby achieving the purpose of absorbing liquid. In some embodiments, the button 200 is located at its top and extends downward to form the abutment portion 21. In some embodiments, the button 200 is provided with an open cavity 26 with a bottom opening, and the piston body 11 can extend into the open cavity 26 so that the abutment portion 21 can be connected with the piston body 11. In some embodiments, a snap-fit ​​groove 111 is provided on the outer wall of the piston body 11, and correspondingly, a snap-fit ​​portion 33 capable of cooperating with the snap-fit ​​groove 111 is provided on the inner wall of the inner tube 300. In some embodiments, an annular convex rib 35 is also provided on the inner wall of the inner tube 300, and the annular convex rib 35 abuts against the outer wall of the protrusion of the piston body 11, thereby improving the connection stability between the piston body 11 and the inner tube 300; an annular protrusion 101 is provided at the top open portion of the dropper body 10, and an annular groove 112 adapted to the annular protrusion 101 is provided on the inner wall of the piston body 11 to achieve a fixed connection between the piston body 11 and the dropper body 10, and at the same time, the sealing of the connection between the two can be improved to ensure the sealing of the liquid suction cavity 12; and the outer wall of the dropper body 10 is fixedly connected to the piston body 11 through the connecting frame 102, thereby improving the connection strength between the dropper body 10 and the piston body 11. By adopting the above scheme, the fixed connection between the piston body 11 and the inner tube 300 can be achieved through the cooperation of the clamping groove 111 and the clamping portion 33, and the dropper structure 100 will only rotate synchronously with the inner tube 300. Then, when the button 200 moves downward during the rotation, it will press the piston body 11 to make it absorb liquid.

[0062] In some embodiments, the button 200 includes a button body 27, and the button body 27 includes an upper half 22 and a lower half 23 arranged from top to bottom, the upper half 22 extends out of the inner tube 300, and the lower half 23 is placed in the inner tube 300, and the outer wall of the lower half 23 is provided with the protrusion 20; wherein the outer diameter of the lower half 23 is greater than the outer diameter of the upper half 22, so that abutment end face 24 is formed at the connection between the lower half 23 and the upper half 22; an operating body 25 is sleeved on the outer wall of the upper half 22, and the bottom end of the operating body 25 abuts against the abutment end face 24. In some embodiments, the top of the inner part of the button body 27 is convex downward to form the abutment portion 21; the outer wall of the operating body 25 at the top thereof is convex radially outward to form a limiting piece 251, and the limiting piece 251 will abut against the top of the outer tube 400 when the button 200 rotates and moves downward, thereby preventing the button 200 from extending into the outer tube 400 as a whole during the rotation process. In some embodiments, the outer wall of the upper part 22 is provided with a protrusion 221, and the inner wall of the operating body 25 is correspondingly provided with a recess 252, and the fixed connection between the operating body 25 and the button body 27 can be achieved through the cooperation of the protrusion 221 and the recess 252; at the same time, the outer peripheral wall of the upper part 22 is provided with a convex strip 222 to enhance the friction between the operating body 25 and the button body 27, thereby ensuring that when the operating body 25 is rotated, the button body 27 will rotate synchronously with it and will not deviate.

[0063] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0064] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A dropper cap, characterized in that: The invention comprises a dropper structure (100), a button (200) which is arranged above the dropper structure (100) and can move up and down, an inner tube (300) which is sleeved outside the dropper structure (100) and can cooperate with the button (200) to prevent rotation, and an outer tube (400) which is sleeved outside the inner tube (300), wherein the inner tube (300) is rotatably arranged relative to the outer tube (400); wherein the button (200) is provided with a protruding portion (20), and the inner tube (300) is provided with a groove (30) for the protruding portion (20) to pass through and can avoid the protruding portion (20) from moving up and down; and a matching portion (40) which cooperates with the protruding portion (20) so that the button (200) can drive the button (200) to move up or down during rotation is provided on the inner wall of the outer tube (400).

2. The dropper cap according to claim 1, characterized in that: The mating portion (40) comprises at least one mating groove (401) formed by an inward depression of the inner wall portion of the outer tube (400); the top end of the mating groove (401) is provided with a mating end surface (401a) extending along the circumference of the inner wall of the outer tube (400) and inclined from top to bottom; when the button (200) is rotated, the protrusion (20) can move up or down along the mating end surface (401a).

3. The dropper cap according to claim 2, characterized in that: The mating groove (401) comprises a first mating end face (401b) and a second mating end face (401c) respectively connected to both ends of the mating groove (401); a limiting space (402) for limiting the rotation range of the button (200) is formed between the first mating end face (401b) and the second mating end face (401c); and when the button (200) is rotated until the protrusion (20) abuts against the first mating end face (401b), the button (200) is in a fully open state; when the button (200) is rotated until the protrusion (20) abuts against the second mating end face (401c), the button (200) is in a fully closed state.

4. The dropper cap according to claim 2, characterized in that: A raised rib (31) is provided on the outer wall of the inner tube (300) directly below the slot (30), and the rib (31) is capable of rotating along the matching groove (401).

5. The dropper cap according to claim 1, characterized in that: The inner tube (300) is provided with a rotation groove (32) on its outer wall at the lower end, and correspondingly, the outer tube (400) is provided with a rotation part (41) on its inner wall at the lower end that can rotate with the rotation groove (32).

6. The dropper cap according to claim 1, characterized in that: The dropper structure (100) comprises a dropper body (10) and a piston body (11) connected to the top end of the dropper body (10), wherein the piston body (11) and the interior of the dropper body (10) are mutually connected; the button (200) comprises an abutting portion (21) abutting against the top end of the piston body (11), and when the button (200) is driven to move downward, the abutting portion (21) can exert a downward force on the piston body (11) to cause it to absorb liquid.

7. The dropper cap according to claim 6, characterized in that: The button (200) is located inside and at the top thereof, and extends downward to form the abutment portion (21).

8. The dropper cap according to claim 6, characterized in that: The outer wall of the piston body (11) is provided with a clamping groove (111), and correspondingly, the inner wall of the inner tube (300) is provided with a clamping portion (33) capable of cooperating with the clamping groove (111).

9. The dropper cap according to claim 1, characterized in that: The button (200) comprises a button body (27), wherein the button body (27) comprises an upper half (22) and a lower half (23) which are arranged from top to bottom, wherein the upper half (22) extends out of the inner tube (300), and the lower half (23) is placed in the inner tube (300), and the outer wall of the lower half (23) is provided with the protrusion (20); wherein the outer diameter of the lower half (23) is greater than the outer diameter of the upper half (22), so that a contact end surface (24) is formed at the connection between the lower half (23) and the upper half (22); and an operating body (25) is sleeved on the outer wall of the upper half (22), and the bottom end of the operating body (25) contacts the contact end surface (24).

10. A dropper bottle, characterized in that: The invention comprises a dropper cap as described in any one of claims 1 to 9, and a bottle body connected to the dropper cap and used for containing liquid.

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