Tight rubber plug

By designing annular protrusions and snap-fit ​​structures on the rubber stopper, combined with neoprene material, the problem of unstable sealing performance of the rubber stopper at low temperatures is solved, achieving tight fit and good sealing effect in low-temperature environments.

CN224241651UActive Publication Date: 2026-05-15TAIZHOU KANGLONG PHARMA PACKAGING
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Patent Information

Application Number
CN202521255346.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-18
Publication Date
2026-05-15
Estimated Expiration
2035-06-18

AI Technical Summary

Technical Problem

Existing rubber stoppers tend to shrink at low temperatures, leading to unstable sealing performance and affecting the sealing effect of medicine bottles.

Method used

A tight-fitting rubber stopper was designed, employing an annular protrusion and a snap-fit ​​structure. The tight compression of the annular protrusion ensures a tight fit between the rubber stopper and the mouth of the medicine bottle, and neoprene material is used to improve low-temperature resistance.

Benefits of technology

Maintaining a good seal in low-temperature environments prevents the rubber stopper from loosening from the bottle opening, thus improving sealing performance and service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a tight rubber plug, and belongs to the technical field of rubber plugs. The problems that most existing bottled medicaments are sealed by rubber plugs, when the rubber plugs are used for sealing medicine bottles, part of colloid is attached to the outer sides of medicine bottle openings, however, the part is only attached to the outer sides of the medicine bottle openings, the sealing performance is not stable, and if the rubber plugs are used at low temperature, the shrinkage phenomenon possibly occurs; the matching between the part of the colloid and the medicine bottle opening becomes loose, and the sealing performance is influenced. The tight rubber plug comprises a rubber plug body, a fixed plate is fixedly arranged on one side of the rubber plug body, a movable plate is movably arranged on one side of the fixed plate, and annular protruding blocks are fixedly arranged on the inner side of the fixed plate and the inner side of the movable plate. And when the rubber plug main body is used in a low-temperature environment, the rubber plug main body cannot be shrunk, and a good sealing effect can still be achieved.
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Description

Technical Field

[0001] This utility model belongs to the field of rubber stopper technology, and relates to a rubber stopper, particularly a tight-fitting rubber stopper. Background Technology

[0002] Most bottled medicines currently use rubber stoppers for sealing. When sealing medicine bottles, some of the rubber sealant adheres to the outside of the bottle opening. However, this part only adheres to the outside of the bottle opening, and the sealing performance is not stable. If used at low temperatures, shrinkage may occur, causing the fit between this part of the rubber sealant and the bottle opening to loosen, affecting the sealing performance. Therefore, designing a tight-fitting rubber stopper is of great significance. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the prior art by providing a tight-fitting rubber stopper.

[0004] The objective of this utility model can be achieved through the following technical solution: A tight-fitting rubber stopper, characterized in that it includes a rubber stopper body, a fixed plate is fixedly disposed on one side of the rubber stopper body, a movable plate is movably disposed on one side of the fixed plate, annular protrusions are fixedly disposed on the inner sides of both the fixed plate and the movable plate, movable grooves are opened on both sides of the movable plate, a fixed buckle is fixedly disposed in the movable groove, and movable grooves are opened on both sides of the fixed plate, which are connected to the movable grooves, and elastic buckles are fixedly disposed in the movable grooves, and the fixed buckles and elastic buckles are engaged with each other.

[0005] In the aforementioned type of tight-fitting rubber plug, a top post is fixedly provided on the outer side of the elastic buckle.

[0006] In the aforementioned type of tight-fitting rubber plug, the fixed plate has two symmetrical limiting grooves inside, and a guide block that slides within the limiting groove is fixedly installed on one side of the movable plate.

[0007] In the aforementioned type of tight-fitting rubber stopper, the guide block is T-shaped.

[0008] In the aforementioned type of tight-fitting rubber stopper, the main body of the rubber stopper is made of neoprene material.

[0009] Compared with existing technologies, this tight-fitting rubber stopper makes the rubber stopper body fit more tightly to the outside of the medicine bottle opening. Due to the tight compression of the annular protrusion, the rubber stopper body cannot shrink when used in low-temperature environments, and a good sealing effect can still be achieved. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of a tight-fitting rubber stopper.

[0011] Figure 2 This is a schematic diagram of the guide block structure of this tight-fitting rubber stopper.

[0012] Figure 3 This is a schematic diagram of the annular bump structure of this tight-fitting rubber stopper.

[0013] Figure 4 It is a tight-fitting rubber stopper. Figure 2 Schematic diagram of the structure at point A in the middle.

[0014] In the diagram, 1 is the rubber stopper body; 2 is the fixing plate; 3 is the movable plate; 4 is the annular protrusion; 5 is the movable groove one; 6 is the fixing buckle; 7 is the movable groove two; 8 is the elastic buckle; 9 is the top column; 10 is the limiting groove; and 11 is the guide block. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figure 1-4 As shown, this tight-fitting rubber stopper includes a rubber stopper body 1. A fixed plate 2 is fixedly installed on one side of the rubber stopper body 1, and a movable plate 3 is movably installed on one side of the fixed plate 2. Both the fixed plate 2 and the movable plate 3 have annular protrusions 4 fixedly installed on their inner sides. Movable grooves 5 are opened on both sides of the movable plate 3, and fixed buckles 6 are fixedly installed within the movable grooves 5. Movable grooves 7, communicating with the movable grooves 5, are opened on both sides of the fixed plate 2, and elastic buckles 8 are fixedly installed within the movable grooves 7. The fixed buckles 6 and elastic buckles 8 interlock. After the rubber stopper body 1 is fitted to the medicine bottle, the movable plate 3 is pushed to align with the fixed plate 2, and the elastic buckles 8 and fixed buckles 6 interlock, thus fixing the fixed plate 2 and the movable plate 3. At this time, the annular protrusions 4 on the fixed plate 2 and the movable plate 3 will squeeze the rubber stopper body 1, making the fit between the rubber stopper body 1 and the outer side of the medicine bottle opening tighter. Due to the tight compression of the annular protrusions 4, the rubber stopper body 1 cannot shrink when used in a low-temperature environment, thus still achieving a good sealing effect.

[0017] Preferably, a top post 9 is fixedly provided on the outer side of the elastic buckle 8. When separating the rubber stopper body 1 from the medicine bottle, the elastic buckle 8 bends inward and separates from the fixed buckle 6 by pressing the top post 9. Then, the movable plate 3 is pulled open to reduce the squeezing force of the annular protrusion 4 on the rubber stopper body 1, which facilitates the separation of the rubber stopper body 1 and the medicine bottle.

[0018] Preferably, the fixed plate 2 has two symmetrical limiting grooves 10 inside, and the movable plate 3 has a guide block 11 fixedly installed on one side, which slides in the limiting groove 10. The merging and separating motion trajectories of the fixed plate 2 and the movable plate 3 are guided by the guide block 11 and the limiting groove 10.

[0019] Preferably, the guide block 11 is T-shaped.

[0020] Preferably, the rubber stopper body 1 is made of neoprene material, which has good aging resistance and improves the service life of the rubber stopper body 1.

[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0022] Although this document uses a number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A tight-fitting rubber stopper, characterized in that, The device includes a rubber stopper body (1), a fixed plate (2) is fixedly installed on one side of the rubber stopper body (1), a movable plate (3) is movably installed on one side of the fixed plate (2), and an annular protrusion (4) is fixedly installed on the inner side of both the fixed plate (2) and the movable plate (3). Movable grooves (5) are opened on both sides of the movable plate (3), and fixed buckles (6) are fixedly installed in the movable grooves (5). Movable grooves (7) communicating with the movable grooves (5) are opened on both sides of the fixed plate (2), and elastic buckles (8) are fixedly installed in the movable grooves (7). The fixed buckles (6) and the elastic buckles (8) are engaged with each other.

2. The tight-fitting rubber stopper according to claim 1, characterized in that, The elastic buckle (8) is fixedly provided with a top post (9) on the outside.

3. The tight-fitting rubber stopper according to claim 1, characterized in that, The fixed plate (2) has two symmetrical limiting grooves (10) inside, and the movable plate (3) has a guide block (11) fixedly installed on one side, which slides in the limiting groove (10).

4. A tight-fitting rubber stopper according to claim 3, characterized in that, The guide block (11) is T-shaped.

5. A tight-fitting rubber stopper according to claim 1, characterized in that, The rubber stopper body (1) is made of neoprene.