A dropper cap with controllable solution content

Abstract

The utility model discloses a drop bottle lid of controllable solution content, include: outer cover, top surface vertical first through -hole is provided with, the liquid suction tube is connected with the outer cover fixedly, and the inside fixed setting has the limit ring, the adjusting part, wherein the middle section column is connected with first through -hole thread, and the up and down are fixedly connected with knob and first limit block respectively, and the adjusting part vertical second through -hole is provided with, the piston subassembly, wherein the main rod is connected with second through -hole sliding, and the piston is fixedly connected with main rod lower extreme and is matched with the liquid suction tube inner wall, and the second limit block is fixedly connected with main rod, and sets up between first limit block and limit ring, spring, one end is fixedly connected with second limit block, and the other end is fixedly connected with limit ring. The utility model presses the spring reset, and liquid is sucked into the liquid suction tube simultaneously, and liquid is dropped out again by pressing again, and it is easy to operate, can adjust the movement stroke of piston through the rotation knob, change the volume of liquid suction of piston, adjust the total amount of liquid of this drop bottle lid one time transfer.

Description

Technical Field

[0001] This application relates to the field of packaging container technology, and in particular to a dropper cap that allows for control of solution content. Background Technology

[0002] Traditional dropper caps are commonly used for packaging liquid products such as health drinks, medicines, and essential oils. They typically have a dropper or nozzle with a rubber suction tip attached to the cap, which is threaded to the bottle opening. The drawback of this type of cap is that the volume of liquid dispensed is controlled by squeezing the rubber suction tip, making precise control and adjustment difficult. Furthermore, when repeatedly dispensing the same volume of liquid, manual control makes it difficult to maintain consistency. Users must rely on experience to manually control the volume or on the bottle's markings for monitoring, but the bottle's cross-sectional area is often large, making reading the markings difficult and prone to significant errors. Current dropper caps often use rubber tips as the dispensing control element. However, improper operation can easily cause liquid to flow back and contact the rubber tip, which can reduce the cap's lifespan, contaminate the liquid product, damage the rubber tip, or cause the liquid to evaporate. Utility Model Content

[0003] This invention provides a dropper cap that can control the solution content to overcome the shortcomings of the prior art. By setting an adjustable piston on the dropper cap, the dropper cap can achieve adjustable and precise liquid dispensing.

[0004] A dropper cap for controlling solution content according to this utility model includes:

[0005] The outer cover has threads on its inner side and a first through hole vertically through its top surface.

[0006] The suction tube is a hollow cylindrical tube. The upper end of the suction tube is fixedly connected to the inner bottom surface of the outer cover. A limit ring is fixedly installed inside the suction tube.

[0007] An adjusting component includes a knob, a middle post, and a first limiting block. The outer side of the middle post is threadedly connected to the first through hole. The knob is fixedly connected to the middle post above the first through hole. The first limiting block is fixedly connected to the middle post below the first through hole. The adjusting component has a vertically penetrating second through hole, which passes through the knob, the middle post, and the first limiting block.

[0008] A piston assembly includes a pressing element, a main rod, a second limiting block, and a piston. The main rod is slidably connected to a second through hole and cooperates with a limiting ring. The pressing element is fixedly connected to the upper end of the main rod, and the piston is fixedly connected to the lower end of the main rod. The piston cooperates with the inner wall of the suction tube. The second limiting block is fixedly connected to the main rod and is disposed between the first limiting block and the limiting ring.

[0009] The spring has one end fixedly connected to the second limiting block and the other end fixedly connected to the limiting ring.

[0010] In one embodiment, the spring is a compression spring.

[0011] In one embodiment, the surface of the adjusting member is provided with a scale.

[0012] In one embodiment, the lower end of the suction tube extends to the bottom of the bottle body to which the dropper cap is connected.

[0013] In one embodiment, the main rod is disposed inside the spring.

[0014] In one embodiment, the distance from the limiting ring to the second limiting block is less than the distance from the pressing member to the knob.

[0015] Compared with the prior art, the advantages of this utility model are as follows:

[0016] (1) This utility model is equipped with a piston assembly and a spring. After pressing, the spring automatically rebounds and resets the piston assembly, while simultaneously drawing the liquid into the suction tube. Pressing again will drip out the drawn-in liquid, which is easy to operate.

[0017] (2) The present invention is equipped with an adjustment component with a knob. The first limiting block can be moved by rotating the knob. In addition, the second limiting block fixedly connected to the piston can adjust the movement stroke of the piston, thereby changing the volume of liquid drawn in by the piston and adjusting the total amount of liquid transferred by the dropper cap in one operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the external structure of this utility model.

[0020] In the diagram: 1. Outer cover; 11. First through hole; 2. Suction tube; 21. Limiting ring; 3. Adjusting component; 31. Knob; 32. Middle column; 33. First limiting block; 34. Second through hole; 4. Piston assembly; 41. Pressing component; 42. Main rod; 43. Second limiting block; 44. Piston; 5. Spring. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0022] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0027] Example 1

[0028] A dropper cap that allows for control of solution concentration, see [reference] Figure 1 , Figure 1 A cross-sectional view of the device is shown, including:

[0029] The outer cover 1 has a threaded inner side and a first through hole 11 vertically through its top surface; specifically, the outer cover 1 is connected to the bottle mouth through the inner thread.

[0030] The suction tube 2 is a hollow cylindrical tube. The upper end of the suction tube 2 is fixedly connected to the inner bottom surface of the outer cover 1. A limit ring 21 is fixedly installed inside the suction tube 2.

[0031] Adjusting component 3 includes a knob 31, a middle section post 32, and a first limiting block 33. The outer side of the middle section post 32 is threaded to the first through hole 11. The knob 31 is fixedly connected to the middle section post 32 above the first through hole 11. The first limiting block 33 is fixedly connected to the middle section post 32 below the first through hole 11. The adjusting component 3 is vertically provided with a second through hole 34, which passes through the knob 31, the middle section post 32, and the first limiting block 33.

[0032] Piston assembly 4 includes a pressing member 41, a main rod 42, a second limiting block 43, and a piston 44. The main rod 42 is slidably connected to the second through hole 34 and cooperates with the limiting ring 21. The pressing member 41 is fixedly connected to the upper end of the main rod 42, and the piston 44 is fixedly connected to the lower end of the main rod 42. The piston cooperates with the inner wall of the suction tube. The second limiting block is fixedly connected to the main rod and is disposed between the first limiting block 33 and the limiting ring 21.

[0033] Spring 5, one end of which is fixedly connected to the second limiting block 43, and the other end of which is fixedly connected to the limiting ring 21.

[0034] Specifically, the outer cap 1, piston 44 and suction tube 2 can be made of materials including PP and LDPE, or suitable materials can be selected according to the properties of the liquid in the dropper bottle.

[0035] In this embodiment, spring 5 is a compression spring.

[0036] In this embodiment, the surface of the adjusting member 3 is provided with a scale. Specifically, the cylindrical surface of the knob 31 is provided with scales at equal intervals, and the top surface of the outer cover 1 is provided with a positioning mark pointing to the knob 31. The scale pointed to by the positioning mark is the volume of liquid drawn in one press at this time.

[0037] In this embodiment, the lower end of the suction tube 2 extends to the bottom of the bottle body connected to the dropper cap. Specifically, the lower end of the suction tube 2 is 0.5 cm from the bottom surface of the bottle body.

[0038] In this embodiment, the main rod 42 is disposed inside the spring 5.

[0039] In this embodiment, the distance from the limiting ring 21 to the second limiting block 43 is less than the distance from the pressing member 41 to the knob 31.

[0040] When this embodiment is working:

[0041] (1) Attach the outer cap 1 to the mouth of the dropper bottle using threads;

[0042] (2) Press down the pressing part 41 until it can no longer be pressed down, so that the piston assembly 4 moves downward as a whole, the piston 43 discharges air, and at the same time the spring 5 is squeezed by the second limit block and enters the compression state.

[0043] (3) Release the pressing part 41, and the piston assembly 4 moves upward as a whole under the action of the spring 5. At this time, the liquid is sucked into the suction tube 2.

[0044] (4) Rotate the outer cap 1 so that the dropper cap is detached from the dropper. At this time, align the lower end of the suction tube 2 with the target dispensing position and press down the pressing part 41 until it can no longer be pressed down, and the liquid is completely dripped out.

[0045] (5) When adjusting the volume of liquid transferred by the dropper cap: rotate the knob 31 so that the adjusting part 3 moves up or down as a whole. The movement of the first limiting block 33 limits the movement of the second limiting block 43, thereby changing the stroke of the piston assembly 4, that is, changing the volume of liquid drawn in one suction. The scale on the adjusting part 3 corresponds to the actual volume of liquid drawn in.

[0046] Example 2

[0047] A dropper cap that can control the solution content, with the rest of the structure being the same as in Example 1, wherein the positioning mark on the top surface of the outer cap 1 is a protruding arrow and the protrusion height is greater than the stroke of the adjusting member 3, so that the positioning mark can accurately point to the volume of liquid that the dropper cap can draw at any height when the adjusting member rises.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A dropper cap for controlling solution content, characterized in that, include: The outer cover (1) has a threaded inner side and a first through hole (11) vertically through the top surface; The suction tube (2) is a hollow cylindrical tube. The upper end of the suction tube (2) is fixedly connected to the bottom surface of the inner side of the outer cover (1). A limit ring (21) is fixedly installed inside the suction tube (2). The adjusting component (3) includes a knob (31), a middle section post (32), and a first limiting block (33). The outer side of the middle section post (32) is threadedly connected to the first through hole (11). The knob (31) is fixedly connected to the middle section post (32) above the first through hole (11). The first limiting block (33) is fixedly connected to the middle section post (32) below the first through hole (11). The adjusting component (3) has a second through hole (34) vertically through it. The second through hole (34) passes through the knob (31), the middle section post (32), and the first limiting block (33). The piston assembly (4) includes a pressing member (41), a main rod (42), a second limiting block (43), and a piston (44). The main rod (42) is slidably connected to the second through hole (34). The main rod (42) cooperates with the limiting ring (21). The pressing member (41) is fixedly connected to the upper end of the main rod (42). The piston (44) is fixedly connected to the lower end of the main rod (42). The piston cooperates with the inner wall of the suction tube. The second limiting block is fixedly connected to the main rod. The second limiting block is disposed between the first limiting block (33) and the limiting ring (21). The spring (5) is fixedly connected at one end to the second limiting block (43) and at the other end to the limiting ring (21).

2. The dropper cap for controlling solution content according to claim 1, characterized in that, The spring (5) is a compression spring.

3. The dropper cap for controlling solution content according to claim 1, characterized in that, The surface of the adjusting element (3) is provided with a scale.

4. A dropper cap for controlling solution content according to claim 1, characterized in that, The lower end of the suction tube (2) extends to the bottom of the bottle body connected to the dropper cap.

5. A dropper cap for controlling solution content according to claim 1, characterized in that, The main rod (42) is located inside the spring (5).

6. A dropper cap for controlling solution content according to claim 1, characterized in that, The distance from the limiting ring (21) to the second limiting block (43) is less than the distance from the pressing member (41) to the knob (31).

Images