Double-layer bottle cap

Abstract

The double-layer bottle cap comprises an inner bottle cap body, an outer bottle cap body and a clamping component, the clamping component comprises a first annular protruding block fixedly installed on the circumferential side face of a conical spray head, and a second annular protruding block buckled with the first annular protruding block is fixedly installed on the inner wall of the outer bottle cap body. A gap is reserved between the head and the tail of a virtual circle formed by the first annular protruding block, and the head and the tail of the second annular protruding block are shorter than the gap. Due to the fact that a gap is reserved between the head and the tail of a virtual circle formed by the first annular protruding block, and the head and the tail of the second annular protruding block are smaller than the gap in length, the second annular protruding block can smoothly pass through the gap without large impulse in the rotating opening process, and the second annular protruding block can smoothly pass through the gap without large impulse in the closing process. When the bottle cap is buckled, the second annular protruding block is blocked on the other annular body part of the first annular protruding block, so that buckling is achieved, the tight sealing performance of the bottle cap is guaranteed, and smoother and labor-saving operation experience is brought.

Description

Technical Field

[0001] This utility model relates to the field of bottle cap technology, specifically to a double-layer bottle cap. Background Technology

[0002] The double-cap design for pharmaceutical bottles generally employs a snap-fit ​​closure. The inner conical cap seals the bottle opening and facilitates the dispensing of powder or liquid, while the outer cap engages with the inner cap's ring via a groove to ensure a tight seal. This cap design provides excellent sealing and facilitates the storage and transportation of pharmaceuticals.

[0003] However, when users need to open the bottle cap to take out the medicine powder or liquid, although the operation is simple, in actual use, especially in emergency situations or when wearing gloves, the outer and inner caps are tightly fastened, making it easy for the hand to slip. This makes it difficult to pull out the outer cap quickly and smoothly. At the same time, when separating the outer and inner caps, the force required to pull out the outer cap is greater, and there is a large inertia at the moment of pulling it out, which can easily shake out the powder or liquid inside the bottle. Utility Model Content

[0004] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this utility model is to provide a double-layer bottle cap that makes the removal of the outer cap smoother, less strenuous, eliminates inertia, and reduces the spillage of powder or liquid.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-layer bottle cap.

[0006] Includes an inner bottle cap, including a cap body and a conical nozzle, the cap body being used to cover the bottle body;

[0007] The outer cap is located outside the inner cap and is used to cover the conical nozzle;

[0008] The engaging component is located between the inner cap and the outer cap, and is used for the fastening connection between the inner cap and the outer cap;

[0009] The engaging component includes a first annular protrusion fixedly installed on the circumferential side of the conical nozzle, and a second annular protrusion fixedly installed on the inner wall of the outer bottle cap to engage with the first annular protrusion. A gap is left between the beginning and end of the virtual circle formed by the first annular protrusion, and the length of the beginning and end of the second annular protrusion is less than the length of the gap.

[0010] An elastic element is fixedly installed at the bottom of the outer bottle cap. When the outer bottle cap is fastened to the inner bottle cap, the first annular protrusion abuts against the second annular protrusion, and the elastic element contacts and compresses the inner bottle cap.

[0011] Furthermore, there are multiple first annular protrusions, all of which are located on the same radial circular tangent surface of the conical nozzle. There is a gap between adjacent first annular protrusions, and the length of the first and last ends of the second annular protrusion is less than the length of the gap between adjacent first annular protrusions.

[0012] Furthermore, the side of the first annular protrusion furthest from the cover has a chamfer.

[0013] Furthermore, the second annular protrusion has a chamfer on the side near the cover.

[0014] Furthermore, a first marking area is provided on the upper side of the cap and between two adjacent first annular protrusions, and a second marking area is provided on the outer side of the outer bottle cap. When the first marking area corresponds to the second marking area, the gap between the second annular protrusion and the two adjacent first annular protrusions corresponds.

[0015] Furthermore, the outer bottle cap is made of plastic.

[0016] Furthermore, the elastic element is a rubber ring located on the outside of the conical nozzle.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: by pressing or rotating the outer bottle cap, the second annular protrusion and the first annular protrusion are engaged or disengaged, thus realizing the opening and closing of the bottle cap. Because there is a gap between the beginning and end of the virtual circle formed by the first annular protrusion, and the length of the beginning and end of the second annular protrusion is less than the gap length, the second annular protrusion can smoothly pass through the gap without a large impulse when rotating to open, while being blocked on the other ring of the first annular protrusion when closing, thus achieving engagement. This design not only ensures a tight seal of the bottle cap but also provides a smoother and more effortless operating experience. Attached Figure Description

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

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

[0020] Figure 3 A bottom view showing the overall structure of this utility model.

[0021] In the diagram: 1. Inner bottle cap; 11. Cap body; 12. Conical nozzle; 2. Outer bottle cap; 3. Engaging component; 31. First annular protrusion; 32. Second annular protrusion; 4. Elastic element; 5. First marking area; 6. Second marking area. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please see Figure 1 - Figure 3 This embodiment provides a double-layer bottle cap, including an inner bottle cap 1, which includes a cap body 11 and a conical nozzle 12. The cap body 11 is used to cover the bottle body; the outer bottle cap 2 is disposed outside the inner bottle cap 1 and is used to cover the conical nozzle 12.

[0024] When the inner cap 1 is screwed onto the bottle body, the cap 11 tightly covers the bottle opening, maintaining the seal of the powder or liquid inside the bottle; at the same time, the conical nozzle 12 allows the liquid to flow out through its specific angle and direction. The outer cap 2 is further secured to the inner cap 1 and protects the conical nozzle 12, preventing damage to the nozzle or accidental opening during use, thereby ensuring the safety of the liquid inside the bottle.

[0025] The engaging component 3 is disposed between the inner bottle cap 1 and the outer bottle cap 2 for fastening the inner bottle cap 1 and the outer bottle cap 2. The outer bottle cap 2 is made of plastic. The engaging component 3 includes a first annular protrusion 31 fixedly installed on the side of the conical nozzle 12. A second annular protrusion 32 that fastens with the first annular protrusion 31 is fixedly installed on the inner wall of the outer bottle cap 2. A gap is left between the beginning and end of the virtual circle formed by the first annular protrusion 31. The length of the beginning and end of the second annular protrusion 32 is less than the length of the gap.

[0026] The inner cap 1 and the outer cap 2 are connected by a locking component 3. Specifically, a first annular protrusion 31 is fixedly installed on the side of the conical nozzle 12, and a second annular protrusion 32, which engages with the first annular protrusion 31, is fixedly installed on the inner wall of the outer cap 2. This allows the inner cap 1 and the outer cap 2 to fit tightly together. During operation, pressing or pulling the outer cap 2 causes the second annular protrusion 32 to engage or disengage with the first annular protrusion 31, thus opening and closing the cap. Because there is a gap between the beginning and end of the virtual circle formed by the first annular protrusion 31, and the length of the beginning and end of the second annular protrusion 32 is less than the length of the gap, the second annular protrusion 32 can pass smoothly through the gap when rotating to open, and when closing, the second annular protrusion 32 is blocked on the other annular part of the first annular protrusion 31, thus achieving the locking. This design not only ensures the tight sealing of the cap but also provides a smoother and more effortless operating experience.

[0027] An elastic element 4 is fixedly installed at the bottom of the outer bottle cap 2. When the outer bottle cap 2 is fastened to the inner bottle cap 1, the first annular protrusion 31 and the second annular protrusion 32 abut against each other, and the elastic element 4 contacts and compresses the inner bottle cap 1.

[0028] In addition, an elastic element 4 is fixedly installed at the bottom of the outer bottle cap 2. When the outer bottle cap 2 is closed on the inner bottle cap 1, the elastic element 4 contacts and compresses the inner bottle cap 1, so that the first annular protrusion 31 and the second annular protrusion 32 will abut against each other, providing abutment force between the first annular protrusion 31 and the second protrusion and strengthening the connection. When the second annular protrusion 32 rotates to the gap, under the elastic force of the elastic element 4, the second annular protrusion 32 will pop out from the gap, so that the outer bottle cap 2 and the inner bottle cap 1 can be separated more easily.

[0029] To enhance the sealing between the outer cap 2 and the inner cap 1, the elastic element 4 is a rubber ring. The rubber ring is located outside the conical nozzle 12, so that when the outer cap 2 is fastened onto the inner cap 1, the rubber ring is compressed, thereby sealing the gap between the outer cap 2 and the inner cap 1.

[0030] The first annular protrusion 31 has a chamfer on the side away from the cap 11. The second annular protrusion 32 has a chamfer on the side closer to the cap 11. Thus, during the process of the outer cap 2 being fastened onto the inner cap 1, the first annular protrusion 31 contacts the second annular protrusion, and the chamfer allows for smoother movement, sliding in relative to each other along the chamfer.

[0031] A first marking area 5 is provided on the upper side of the cap 11 and between two adjacent first annular protrusions 31. A second marking area 6 is provided on the outer side of the outer cap 2. When the first marking area 5 corresponds to the second marking area 6, the gap between the second annular protrusion 32 and the two adjacent first annular protrusions 31 corresponds.

[0032] When it is necessary to open the outer bottle cap 2 on the inner bottle cap 1, rotate the outer bottle cap 2 so that the first marking area 5 located between two adjacent first annular protrusions 31 on the upper side of the cap body 11 is aligned with the second marking area 6 on the outer side of the outer bottle cap 2. At this time, the second annular protrusion 32 on the outer bottle cap 2 will be aligned with the gap between the two adjacent first annular protrusions 31. This alignment relationship confirms that the outer bottle cap 2 has been rotated into place. At the same time, when the outer bottle cap 2 is closed on the inner bottle cap 1, the corresponding positions of the first marking area 5 and the second marking area 6 determine whether the outer bottle cap 2 will detach from the inner bottle cap 1, thus playing a preventive role.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A double-layered bottle cap, characterized in that, Includes an inner bottle cap (1), a cap body (11) and a conical nozzle (12), the cap body (11) being used to cover the bottle body; The outer cap (2) is located outside the inner cap (1) and is used to cover the conical nozzle (12). The engaging component (3) is located between the inner bottle cap (1) and the outer bottle cap (2) for engaging the inner bottle cap (1) and the outer bottle cap (2); The engaging component (3) includes a first annular protrusion (31) fixedly installed on the side of the conical nozzle (12), and a second annular protrusion (32) fixedly installed on the inner wall of the outer bottle cap (2) to engage with the first annular protrusion (31). A gap is left between the beginning and end of the virtual circle formed by the first annular protrusion (31), and the length of the beginning and end of the second annular protrusion (32) is less than the length of the gap. The bottom of the outer bottle cap (2) is fixedly installed with an elastic element (4). When the outer bottle cap (2) is fastened on the inner bottle cap (1), the first annular protrusion (31) and the second annular protrusion (32) abut against each other, and the elastic element (4) contacts and compresses the inner bottle cap (1).

2. The double-layer bottle cap according to claim 1, characterized in that, There are multiple first annular protrusions (31), and all of the multiple first annular protrusions (31) are located on the same radial circular tangent on the conical nozzle (12). There is a gap between adjacent first annular protrusions (31), and the length of the second annular protrusion (32) is less than the length of the gap between adjacent first annular protrusions (31).

3. The double-layer bottle cap according to claim 2, characterized in that, The first annular protrusion (31) has a chamfer on the side away from the cover (11).

4. The double-layer bottle cap according to claim 2, characterized in that, The second annular protrusion (32) has a chamfer on the side near the cover (11).

5. The double-layer bottle cap according to claim 2, characterized in that, A first marking area (5) is provided on the upper side of the cap (11) and between two adjacent first annular protrusions (31). A second marking area (6) is provided on the outer side of the outer bottle cap (2). When the first marking area (5) corresponds to the second marking area (6), the gap between the second annular protrusion (32) and the two adjacent first annular protrusions (31) corresponds.

6. The double-layer bottle cap according to claim 1, characterized in that, The outer bottle cap (2) is made of plastic.

7. The double-layer bottle cap according to claim 1, characterized in that, The elastic element (4) is a rubber ring, which is located outside the conical nozzle (12).

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