Anti-backflow cosmetic dropper

Abstract

The utility model discloses an anti-backflow cosmetic dropper, belongs to the technical field of cosmetic tools, and provides an anti-backflow cosmetic dropper convenient to clean, the anti-backflow cosmetic dropper comprises a liquid storage tube and a suction ball, the liquid storage tube is provided with a cylindrical part, the upper end of the cylindrical part is provided with a rotary sleeve part, and the inner wall of the cylindrical part is provided with a limiting ring located at the lower end of the rotary sleeve part; the suction ball comprises an elastic bag, the lower end of the elastic bag is fixedly connected with an extension pipe, the lower end of the extension pipe is provided with a rotary connection part suitable for being connected with the rotary sleeve part in a matched mode, the inner wall of the rotary connection part is provided with a necking ring, and a flow blocking ball is arranged in the rotary connection part. According to the anti-backflow drip tube, the drip tube is designed into a split structure, the flow blocking ball is arranged between the liquid storage tube and the suction ball, and the flow blocking ball can reach the lowest position earlier than cosmetic liquid by utilizing the characteristic that the flow blocking ball has no viscosity, so that the anti-backflow function is realized, and the drip tube is convenient to clean after being used due to the detachable structure.

Description

Technical Field

[0001] The present application relates to the technical field of cosmetic tools, and in particular to an anti-backflow cosmetic dropper. Background Art

[0002] If only a small amount of liquid cosmetics is needed at a time, a dropper is usually used. Existing droppers are mostly composed of a straw and an elastic rubber head. Usually, they cannot be placed flat or inverted after absorbing the liquid, because the cosmetics may contaminate the inside of the rubber head, which is inconvenient to clean. Over time, the cosmetics solidify and are likely to block the air holes of the rubber head, causing the dropper to lose its ability to absorb or drip liquid. Summary of the invention

[0003] The purpose of the present application is to provide an anti-backflow cosmetic dropper that is easy to clean.

[0004] To achieve the above purpose, the present application provides an anti-backflow cosmetic dropper: comprising a liquid storage tube and a suction ball, the liquid storage tube having a cylindrical portion, the upper end of the cylindrical portion having a spiral sleeve portion, the inner wall of the cylindrical portion having a limiting ring located at the lower end of the spiral sleeve portion, the center of the limiting ring having a contraction opening that passes through from top to bottom, the cross-section of the contraction opening being elliptical, the suction ball comprising an elastic sac, the lower end of the elastic sac being fixedly connected to an extension tube, the lower end of the extension tube having a spiral connection portion suitable for being matched and connected with the spiral sleeve portion, the inner wall of the spiral connection portion having a necking ring, the center of the necking ring having a convection hole that passes through from top to bottom, the cross-section of the convection hole being circular, a blocking ball being arranged in the spiral connection portion, realizing the main component of preventing liquid backflow.

[0005] As a preference, the inner wall of the screw sleeve portion is provided with an internal thread, and the outer side surface of the screw-on portion is provided with an external thread, which is suitable for cooperating with the internal thread, so that the connection is stable and the assembly and disassembly are convenient.

[0006] As a preference, a limiting step is formed between the outer side surface of the screw-on portion and the lower end surface of the extension tube, which is suitable for blocking the end of the screw-on sleeve portion and limiting the screw-on depth of the thread.

[0007] As a preference, the material used for the extension tube and the screw-on portion is harder than the material used for the elastic bag, thereby ensuring a stable connection structure.

[0008] As a preference, the elastic bag is supported by a silicone material, the extension tube and the screw-on portion are an integrated structure, and are made of plastic, and the plastic and the silicone are fixed together by hot melting.

[0009] As a preferred embodiment, a friction groove is provided on the outer side of the rotary sleeve portion, and a hanging ring is provided on the outer side of the extension tube for suspending the entire dropper for easy drying after cleaning.

[0010] Preferably, the lower end of the cylindrical portion further comprises a tapered portion, wherein the tapered portion has a larger upper end and a smaller lower end, so as to facilitate insertion into the narrow mouth of a cosmetic bottle.

[0011] As a preferred embodiment, the liquid storage tube is an integrated structure and is made of plastic material, and the flow-blocking ball is solid and is made of stainless steel material, taking into account both corrosion resistance and high density characteristics.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] (1) The dropper is designed to have a split structure, and a flow-blocking ball is arranged between the liquid storage tube and the suction ball. By taking advantage of the fact that the flow-blocking ball has no viscosity, the flow-blocking ball can reach the lowest point earlier than the cosmetic liquid, thereby achieving the function of preventing backflow. The detachable structure also facilitates the cleaning of the dropper after use.

[0014] (2) By arranging a hanging ring structure outside the suction ball, the dropper can be suspended in mid-air after cleaning, which can avoid contamination on the one hand and accelerate drying on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the anti-backflow cosmetic dropper;

[0016] Figure 2 It is a three-dimensional cross-sectional view of the overall structure of the anti-backflow cosmetic dropper;

[0017] Figure 3 For the anti-backflow cosmetic dropper Figure 2 A local enlarged view of point A;

[0018] Figure 4 It is a three-dimensional structural cross-sectional view of the liquid storage tube of the anti-backflow cosmetic dropper;

[0019] Figure 5 For the anti-backflow cosmetic dropper Figure 4 A partial enlarged view of point B;

[0020] Figure 6 A sectional view of the three-dimensional structure of the flow-blocking ball of the anti-backflow cosmetic dropper arranged in the suction ball;

[0021] Figure 7 The present invention is a three-dimensional structural cross-sectional view of the suction ball of the anti-backflow cosmetic dropper.

[0022] In the figure: 1. liquid storage tube; 101. cone; 102. cylindrical part; 103. limit ring; 104. contraction port; 105. screw sleeve; 106. internal thread; 107. friction groove; 2. suction ball; 201. elastic bag; 202. extension tube; 203. external thread; 204. limit step; 205. screw-on part; 206. neck shrinkage ring; 207. convection hole; 208. hanging ring; 3. flow-blocking ball. DETAILED DESCRIPTION

[0023] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0026] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0027] like Figure 1-7 The anti-backflow cosmetic dropper shown includes a detachable liquid storage tube 1 and a suction ball 2. After the two are matched, a blocking ball 3 is arranged in the cavity formed between the matching parts. The blocking ball 3 can move within the cavity. The blocking ball 3 is solid and made of stainless steel material. Therefore, it is less affected by the buoyancy of the liquid and can always be at the lowest point in the cavity, which is conducive to blocking the channel where backflow may occur.

[0028] The liquid storage tube 1 has a cylindrical portion 102, and the internal volume of the cylindrical portion 102 is the largest, and a relatively large amount of cosmetics can be stored. The upper end of the cylindrical portion 102 has a spiral sleeve portion 105, and the inner wall of the cylindrical portion 102 has a limit ring 103 located at the lower end of the spiral sleeve portion 105, which can hold the flow-blocking ball 3. The center of the limit ring 103 has a contraction opening 104 that passes through from top to bottom. The inner diameter of the contraction opening 104 is relatively small, and the flow-blocking ball 3 held by the limit ring 103 cannot pass through. The cross section of the contraction opening 104 is elliptical, even if the flow-blocking ball 3 falls on the upper end of the contraction opening 104, and will not completely block the contraction opening 104, so air can freely pass through the contraction opening 104. The lower end of the cylindrical portion 102 also has a cone 101. The inner and outer walls of the cone 101 and the cylindrical portion 102 have a smooth transition. The upper end of the cone 101 is large and the lower end is small, so it is easier to insert into the narrow cosmetic bottle mouth. The liquid storage tube 1 is an integrated structure and is made of plastic material, which is actually injection molding. The selected plastic generally needs to have a relatively high transparency and a relatively high hardness.

[0029] The specific structure of the suction ball 2 includes an elastic capsule 201, which is generally made of food-grade silicone material and will not have a pungent smell after long-term use. The lower end of the elastic capsule 201 is fixedly connected to an extension tube 202, which obviously protrudes from the spherical outer surface of the elastic capsule 201. The lower end of the extension tube 202 has a screw-on portion 205, and the outer diameter of the screw-on portion 205 is smaller than the outer diameter of the extension tube 202. The materials used for the extension tube 202 and the screw-on portion 205 are harder than the material used for the elastic capsule 201. The elastic capsule 201 is made of silicone material, and the extension tube 202 and the screw-on portion 205 are an integrated structure made of plastic. The plastic material used can be the same as the material of the liquid storage tube 1, both of which are relatively hard, but there is no transparency requirement and can be made matte. The inner wall of the screw-on portion 205 has a necking ring 206. In fact, the flow-blocking ball 3 is located in the screw-on portion 205 and is blocked by the limit ring 103 and the necking ring 206. The necking ring The inner bottom of 206 transitions with the inner wall curved surface of the screw-on part 205, and gradually shrinks from bottom to top, so that it can better fit with the flow-blocking ball 3. In addition, the neck shrinking ring 206 is usually supported by a material with relatively good soft elasticity, such as a silicone material, which further improves the tightness of the fit between the flow-blocking ball 3 and the neck shrinking ring 206, thereby having a better anti-backflow performance. The center of the neck shrinking ring 206 has a convection hole 207 that runs through from top to bottom, which only allows air to pass in or out. The cross section of the convection hole 207 is circular. , which can be completely fitted with the blocking ball 3 to block the passage of liquid when the dropper is inverted or tilted. A friction groove 107 is provided on the outer side of the rotating sleeve 105 to enhance the friction of the hand holding the rotating sleeve 105. The outer side of the extension tube 202 has a hanging ring 208. The hanging ring 208 is an obstacle outside the extension tube 202 and can also enhance the friction of rotating the extension tube 202. However, the most important function of the hanging ring 208 is to hang the entire dropper so that it is in a suspended state for easy drying.

[0030] The screw-on portion 205 can be connected with the screw-on sleeve portion 105. Specifically, the inner wall of the screw-on sleeve portion 105 will be provided with an internal thread 106, and the outer side surface of the screw-on portion 205 will be provided with an external thread 203, which is exactly matched with the internal thread 106. The liquid storage tube 1 and the suction ball 2 are fixedly connected by tightening, which is very stable and easy to disassemble. A limited step 204 is formed between the outer side surface of the screw-on portion 205 and the lower end surface of the extension tube 202, which is used to block the end of the screw-on sleeve portion 105, thereby limiting the screw-on depth of the threaded cooperation and avoiding over-rotation or excessive depth.

[0031] Working principle: When in use, first place the flow-blocking ball 3 in the screw sleeve 105, then let the screw-in part 205 of the suction ball 2 cooperate with the screw-in part 105 and screw it tightly, the smooth flow-blocking ball 3 will naturally enter the screw-in part 205, the flow-blocking ball 3 has a certain amount of movement in the cavity, the lower end of the cone 101 is inserted into the cosmetic liquid, the elastic capsule 201 is squeezed, the air is discharged from the lower end of the cone 101, the elastic capsule 201 is released, the cosmetic liquid is sucked in, and it can be transferred for use, because the contraction opening 104 in the middle of the limiting ring 103 is relatively small, even if the dropper is directly placed When placed on a desktop, it is difficult for the liquid in the dropper to pass through the contraction opening 104. On the other hand, the blocking ball 3 will be close to the convection hole 207, especially when the lower end of the cone 101 is inverted upward, the blocking ball 3 will block the convection hole 207. Even if the cosmetic liquid enters the screw-on portion 205, it will not enter the elastic bag 201. Therefore, the dropper has a good anti-backflow performance. After use, you only need to unscrew the liquid storage tube 1, then rinse the screw-on portion 205 and the inside of the liquid storage tube 1, and finally hang the entire dropper using the hanging ring 208 to dry.

[0032] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A backflow-proof cosmetic dropper, characterized in that: The invention comprises a liquid storage tube (1) and a suction ball (2), wherein the liquid storage tube (1) has a cylindrical portion (102), the upper end of the cylindrical portion (102) has a rotating sleeve portion (105), the inner wall of the cylindrical portion (102) has a limiting ring (103) located at the lower end of the rotating sleeve portion (105), the center of the limiting ring (103) has a contraction opening (104) that passes through from top to bottom, and the cross section of the contraction opening (104) is elliptical, and the suction ball (2) comprises an elastic bag (201) The lower end of the elastic bag (201) is fixedly connected to an extension tube (202), and the lower end of the extension tube (202) has a screw-on portion (205) suitable for being connected with the screw-on sleeve portion (105). The inner wall of the screw-on portion (205) has a necking ring (206), and the center of the necking ring (206) has a convection hole (207) that passes through from top to bottom. The cross section of the convection hole (207) is circular, and a flow-blocking ball (3) is arranged in the screw-on portion (205).

2. The anti-backflow cosmetic dropper according to claim 1, characterized in that: The inner wall of the screw sleeve portion (105) is provided with an internal thread (106), and the outer side surface of the screw connection portion (205) is provided with an external thread (203) suitable for threaded engagement with the internal thread (106).

3. The anti-backflow cosmetic dropper according to claim 2, characterized in that: A limiting step (204) is formed between the outer side surface of the screw-on portion (205) and the lower end surface of the extension tube (202), which is suitable for blocking the end of the screw-on sleeve portion (105).

4. The anti-backflow cosmetic dropper according to claim 3, characterized in that: The materials used for the extension tube (202) and the screw-on portion (205) are harder than the material used for the elastic bag (201).

5. The anti-backflow cosmetic dropper according to claim 4, characterized in that: The elastic bag (201) is supported by a silicone material, and the extension tube (202) and the screw-on portion (205) are an integrated structure and are made of plastic.

6. The anti-backflow cosmetic dropper according to any one of claims 1 to 5, characterized in that: The outer side surface of the rotating sleeve portion (105) is provided with a friction groove (107), and the outer side surface of the extension tube (202) is provided with a hanging ring (208).

7. The anti-backflow cosmetic dropper according to claim 6, characterized in that: The lower end of the cylindrical portion (102) further comprises a cone portion (101), wherein the upper end of the cone portion (101) is larger and the lower end is smaller.

8. The anti-backflow cosmetic dropper according to claim 7, characterized in that: The liquid storage tube (1) is an integrated structure and is made of plastic material; the flow-blocking ball (3) is solid and is made of stainless steel material.

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