A combination cap with a protective sleeve pull ring

Abstract

The utility model relates to a combination cover with protective sleeve pull ring relates to medical packaging technical field, it includes outer cover, the top of outer cover is provided with pull ring, the pull ring is fixedly connected with outer cover through stand and is in the state of suspension, the top of outer cover is provided with annular clamping groove, the annular clamping groove is clamped with the sleeve, the bottom of sleeve is clamped into annular clamping groove downward, the top extends and is bent to abut against the top of pull ring, and the sleeve is located on the top surface of outer cover away from the side of stand, the utility model can effectively prevent the pull ring from being pulled up due to accidental collision, scratch in the process of transportation, storage or use, avoids the opening of non -expected, improves the security and reliability of product.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical packaging technology, and in particular to a combination cap with a protective sleeve and pull ring. Background Technology

[0002] In the pharmaceutical packaging industry, pull-tab type combination caps are widely used in infusion containers due to their ease of opening. These caps typically consist of an outer cap, an inner cap, and a pull tab, relying on the breakage of the pull tab to open. However, in actual transportation and distribution, the pull tab lacks effective protection and is prone to premature opening or partial breakage due to entanglement, compression, or accidental stress.

[0003] The main problem with existing pull-ring structures is that the pull ring is prone to unexpected opening under vibration and impact, affecting the integrity of the seal. Furthermore, to ensure tear resistance, the thickness of key areas is limited, resulting in insufficient mechanical strength and a tendency to break at the base, causing the pull ring to fail to open properly or develop microcracks. Moreover, the pull-ring post area is easily damaged under external force, thereby compromising the sterile barrier, introducing the risk of microbial contamination, and seriously affecting medication safety.

[0004] Therefore, there is an urgent need for a combined cap design that can effectively protect the pull ring structure under external mechanical stress and avoid unexpected damage, so as to improve its transportation reliability and usage safety. Utility Model Content

[0005] The purpose of this utility model is to address the problems in the prior art by providing a combination cover with a protective sleeve and pull ring.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a combination cover with a protective sleeve and pull ring, including an outer cover, a pull ring provided at the top of the outer cover, the pull ring being fixedly connected to the outer cover by a column and in a suspended state, an annular groove provided on the top surface of the outer cover, a sleeve being fitted in the annular groove, the bottom end of the sleeve being inserted downward into the annular groove, the top end extending upward and bending to abut against the top of the pull ring, and the sleeve being located on the top surface of the outer cover on the side away from the column.

[0007] Preferably, the inner wall of one side of the annular slot is further provided with a limiting slot, and the outer wall of the sleeve is correspondingly provided with a limiting protrusion that engages with the limiting slot and forms a mating relationship.

[0008] More preferably, the annular groove is provided around the outer periphery of the pull ring.

[0009] More preferably, the sleeve is an arc-shaped sheet structure, and the top end of the sleeve is bent to form a flange that abuts against the top end of the pull ring.

[0010] More preferably, it also includes an inner cover and a rubber stopper, the rubber stopper being disposed between the inner cover and the outer cover, the outer cover and the inner cover being fixedly connected by a snap-fit ​​mechanism.

[0011] More preferably, the inner top surface of the outer cover is provided with a pressing part for pressing the rubber plug downward, and the pressing part is located on the outer periphery of the tensile surface at the top of the outer cover.

[0012] Compared to existing technologies, this invention features a protective sleeve structure that covers the top of the pull ring by incorporating a retaining sleeve whose tip extends upwards and bends to abut against the top of the suspended pull ring. This effectively prevents the pull ring from being pulled up due to accidental collisions or scratches during transportation, storage, or use, avoiding unintended opening and improving product safety and reliability. Furthermore, the protective sleeve uses a ring-shaped groove for fixation; installation is completed simply by inserting the retaining sleeve into the ring-shaped groove at the top of the outer cover, eliminating the need for complex connectors or additional welding or bonding processes. This structure not only simplifies the production and assembly process and reduces costs but also allows for easy removal of the retaining sleeve during use. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the overall structure in the embodiment;

[0014] Fig. 2 This is a side view of the overall structure in the embodiment;

[0015] Fig. 3 This is a cross-sectional view of the overall structure in the embodiment.

[0016] In the picture:

[0017] 1. Outer cover; 2. Pull ring; 3. Post; 4. Annular groove; 5. Sleeve; 5a. Limiting protrusion; 5b. Flange; 6. Inner cover; 7. Rubber plug; 8. Pressing part; 9. Limiting groove. Detailed Implementation

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0019] It should be noted in advance that, in this utility model, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, in this utility model, unless otherwise explicitly specified and limited, "on" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them.

[0020] like Figs. 1-3 As shown, a combination cover with a protective sleeve and pull ring includes an outer cover 1. A pull ring 2 is provided at the top of the outer cover 1. The pull ring 2 is fixedly connected to the outer cover 1 by a column 3 and is in a suspended state. An annular groove 4 is provided on the top surface of the outer cover 1. A sleeve 5 is engaged in the annular groove 4. The bottom end of the sleeve 5 is inserted downward into the annular groove 4, and the top end extends upward and bends to abut against the top of the pull ring 2. The sleeve 5 is located on the top surface of the outer cover 1 on the side away from the column 3.

[0021] In the above structure, a limiting groove 9 is also provided on one inner wall of the annular groove 4. The limiting groove 9 is set with the structure of the annular groove 4 and is therefore also annular to facilitate injection molding. The outer wall of the sleeve 5 is correspondingly provided with a limiting protrusion 5a that engages with the limiting groove 9. By setting the limiting protrusion 5a on the sleeve 5 and engaging with the limiting groove 9, the limiting function can be achieved to prevent the sleeve 5 from easily coming out of the annular groove 4. However, the sleeve 5 can be made of a plastic material with elastic deformation, so the sleeve 5 can still be easily pulled out during use to facilitate pulling the pull ring 2.

[0022] Preferably, the annular groove 4 is arranged around the outer periphery of the pull ring 2, which makes the main structure of the sleeve 5 located outside the pull ring 2, making it easier to assemble during production and remove during use.

[0023] Furthermore, the ferrule 5 has an arc-shaped sheet structure, with its top end bent to form a flange 5b that abuts against the top of the pull ring 2. The flange 5b effectively restricts the upward or axial displacement of the pull ring, preventing it from loosening or popping out, thus enhancing the stability of the connection between components. Moreover, this bent flange 5b acts as a stop, providing a simple and reliable positioning and stopping point for the pull ring 2, ensuring that the pull ring 2 operates in the designated position. In practical use, the ferrule 5 can be removed by hooking a finger into the inner side of the ferrule 5, or by directly hooking the flange 5b, and then applying slight upward and outward force. Afterward, the outer cover 1 can be opened by pulling open the pull ring 2.

[0024] The structure of this embodiment is a combined cover, which also includes an inner cover 6 and a rubber stopper 7. The rubber stopper 7 is disposed between the inner cover 6 and the outer cover 1. The outer cover 1 and the inner cover 6 are fixedly connected by a snap-fit ​​mechanism. The specific snap-fit ​​structure can be as follows: Fig. 2 As shown, an annular snap-fit ​​protrusion is provided on the lower outer periphery of the inner cover 6, and a corresponding annular snap-fit ​​groove is provided on the lower inner periphery of the outer cover 1. The two can be matched to quickly achieve a snap-fit ​​connection and easily complete the assembly. The inner top surface of the outer cover 1 also has an annular pressing part 8 for pressing the rubber stopper 7 downwards, and the pressing part 8 is located on the outer periphery of the top tensile surface of the outer cover 1. Through the synergistic effect of the pressing part 8 of the outer cover 1 and the snap-fit ​​structure, stable pressing and easy opening of the rubber stopper 7 are achieved while ensuring reliable sealing.

[0025] To facilitate understanding by those skilled in the art of the improvements of this utility model compared to the prior art, some of the accompanying drawings and descriptions of this utility model have been simplified. The above embodiments are preferred implementations of this utility model. In addition, this utility model can be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A combination cover with a protective sleeve and pull ring, comprising an outer cover (1), wherein a pull ring (2) is provided at the top of the outer cover (1), characterized in that: The pull ring (2) is fixedly connected to the outer cover (1) by the column (3) and is in a suspended state. The top surface of the outer cover (1) is provided with an annular groove (4). The annular groove (4) is fitted with a sleeve (5). The bottom end of the sleeve (5) is inserted downward into the annular groove (4), and the top end extends upward and bends to abut against the top of the pull ring (2). The sleeve (5) is located on the top surface of the outer cover (1) on the side away from the column (3).

2. The combination cap with a protective sleeve pull ring of claim 1, wherein: The inner wall of one side of the annular slot (4) is also provided with a limiting slot (9), and the outer wall of the sleeve (5) is provided with a limiting protrusion (5a) that is inserted into the limiting slot (9) and forms a fit.

3. The combination cover with a protective sleeve pull ring of claim 1, wherein: The annular groove (4) is arranged around the outer periphery of the pull ring (2).

4. The combination cover with a protective sleeve pull ring of claim 1, wherein: The sleeve (5) has an arc-shaped sheet structure, and the top end of the sleeve (5) is bent to form a flange (5b) that abuts against the top end of the pull ring (2).

5. The combination cover with a protective sleeve pull ring of claim 1, wherein: It also includes an inner cover (6) and a rubber plug (7), the rubber plug (7) being disposed between the inner cover (6) and the outer cover (1), the outer cover (1) and the inner cover (6) being fixedly connected by a snap-fit ​​method.

6. The combination cap with a protective sleeve pull ring of claim 5, wherein: The inner top surface of the outer cover (1) is provided with a pressing part (8) for pressing the rubber plug (7) downward, and the pressing part (8) is located on the outer periphery of the top tensile surface of the outer cover (1).

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