A one-piece pen cap inner seal plug structure

By designing an integrated pen tube cap inner sealing plug structure, the problem of material flow between the two chambers during storage and transportation was solved by using sealing rings, sealing grooves and pulling rubber strips, achieving better sealing and convenient single-sided opening.

CN224676806UActive Publication Date: 2026-08-25HAOBAI (ZHEJIANG) MEDICAL EQUIP CO LTD
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Patent Information

Application Number
CN202522299296.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-30
Publication Date
2026-08-25
Estimated Expiration
2035-10-30

AI Technical Summary

Technical Problem

Dual-chamber materials are prone to cross-contamination during storage and transportation. Existing split-type sealing plugs have poor sealing performance and cannot effectively prevent the flow of materials between the two chambers.

Method used

An integrated pen tube cap inner sealing plug structure was designed, including a sealing ring, a sealing groove, a single-sided rubber plug, and a pull strip. The sealing groove enhances the sealing performance, the horizontal bar increases friction, and the pull strip facilitates opening the single-sided tube opening.

Benefits of technology

It achieves better sealing and convenient one-sided opening, improving the practicality and sealing effect of the sealing plug.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an integrated pen tube cap cover inner sealing plug structure, including two cavity pen tubes, two pen tube chambers are separated, and the top of two pen tube chambers is provided with the pipe orifice that projects, and two pipe orifices are connected and show double pipe orifices, and the sealing rubber plug is equipped with corresponding double pipe orifice, and the sealing rubber plug includes the sealing ring, and the sealing groove is equipped with corresponding double pipe orifice top at the bottom of sealing ring, and the unilateral rubber plug is connected with two unilateral rubber plugs in the inner side of sealing groove bottom along corresponding two side pipe orifices, and the unilateral rubber plug outer side surface is equipped with a plurality of horizontal strips, and the unilateral rubber plug inner wall bottom is equipped with the pulling rubber strip uniformly. The utility model discloses simple structure, strong sealing, and can unilateral lift and open unilateral pipe orifice.
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Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to an integrated pen tube cap inner sealing plug structure. Background Technology

[0002] During storage and transportation, the material in a dual-chamber container is prone to cross-contamination at the distribution port. Since the sealing performance of the split-type sealing plug is poor, a sealing structure with good sealing performance and the ability to prevent cross-contamination between the two chambers needs to be designed at the distribution port. In order to solve the above problems, this utility model proposes an integrated pen tube cap inner sealing plug structure. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art. Therefore, one objective of this utility model is to propose an integrated pen tube cap inner sealing plug structure that is simple in structure, has strong sealing performance, and can be tilted up on one side to open a single-sided tube opening.

[0004] The technical solution is as follows: An integrated pen tube cap inner sealing plug structure includes a double-chamber pen tube, with two pen tube chambers separated. Each of the two pen tube chambers has a protruding opening at its top, and the two openings are connected to form a double opening. A sealing plug is provided corresponding to the double opening. The sealing plug includes a sealing ring. A sealing groove is provided at the bottom of the sealing ring corresponding to the top of the double opening. Two single-sided plugs are connected to the openings on both sides along the inner side of the sealing groove at the bottom of the sealing ring. Several horizontal strips are provided on the outer surface of the two single-sided plugs. A pulling strip is provided at the bottom of the inner wall of each of the two single-sided plugs.

[0005] Furthermore, the sealing ring is larger than the size of the double-port.

[0006] Furthermore, the horizontal bars are distributed horizontally and are evenly spaced.

[0007] Furthermore, the size of the single-sided rubber plug matches the size of the inner wall of the tube opening.

[0008] Furthermore, the length of the pulling rubber strip is greater than the height of the inner wall of the single-sided rubber plug.

[0009] The beneficial effects of this utility model are: 1. This utility model uses an integrated sealing plug to seal and block the distribution port of the dual-chamber pen tube, resulting in better sealing performance.

[0010] 2. This utility model further enhances the sealing performance of the sealing plug by setting a sealing groove and a horizontal bar inside the sealing plug.

[0011] 3. This utility model improves the practicality of the invention by setting a pulling adhesive at the bottom of the inner wall of the two single-sided rubber stoppers, so that the single-sided tube opening can be opened by pulling the pulling adhesive. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model connected to the pen tube.

[0013] Figure 2 This is a schematic diagram of the structure of this utility model.

[0014] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 4 for Figure 3 A magnified structural diagram of A.

[0016] In the diagram: 1. Double-lumen pen tube; 2. Sealing plug; 101. Double-hole tube; 201. Single-sided rubber plug; 202. Sealing ring; 203. Pulling rubber strip; 204. Horizontal bar; 205. Sealing groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] Please see Figures 1 to 4As shown, an integrated pen tube cap inner sealing plug structure includes a double-chamber pen tube 1, with two separate pen tube chambers. Each of the two chambers has a protruding opening at its top, which is connected to form a double-port 101. A sealing plug 2 is provided corresponding to the double-port 101. The sealing plug 2 includes a sealing ring 202, which is larger than the double-port 101. A sealing groove 205 is provided at the bottom of the sealing ring 202, corresponding to the top of the double-port 101. Two single-sided rubber plugs 201 are connected to the bottom of the sealing ring 202 along the inner side of the sealing groove 205. The size of the single-sided rubber plugs 201 matches the size of the inner wall of the pipe opening. Several horizontal strips 204 are provided on the outer surface of the two single-sided rubber plugs 201. The horizontal strips 204 are distributed laterally and evenly. A pulling rubber strip 203 is provided at the bottom of the inner wall of each of the two single-sided rubber plugs 201. The length of the pulling rubber strip 203 is greater than the height of the inner wall of the single-sided rubber plug 201.

[0020] According to the above scheme, this utility model strengthens the sealing of the sealing plug 2 by making the pen mouth rubber plug of the double-cavity pen tube 1 an integral part.

[0021] The sealing groove 205 at the bottom of the sealing ring 202, corresponding to the double pipe port 101, can enhance the sealing performance of the pipe port.

[0022] The transverse and evenly spaced horizontal stripes 204 distributed on the outer surface of the two single-sided rubber plugs 201 can enhance the friction between the single-sided rubber plug 201 and the inner wall of the double-port 101, thereby also enhancing the sealing performance of the sealing rubber plug 2.

[0023] The pull strip 203 facilitates the opening of the single-sided tube, and when not in use, the pull strip 203 can be rolled up and stored inside the single-sided rubber stopper 201.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An integrated pen tube cap inner sealing plug structure, comprising a double-lumen pen tube, the two pen tube cavities being separated, and each of the two pen tube cavities having a protruding opening at its top, characterized in that: The two pipe openings are connected to form a double pipe opening. A sealing plug is provided corresponding to the double pipe opening. The sealing plug includes a sealing ring. A sealing groove is provided at the bottom of the sealing ring corresponding to the top of the double pipe opening. Two single-sided plugs are connected to the pipe openings on both sides at the bottom of the sealing ring along the inner side of the sealing groove. Several horizontal strips are provided on the outer surface of the two single-sided plugs. A pulling strip is provided at the bottom of the inner wall of each of the two single-sided plugs.

2. The integrated pen cap inner sealing plug structure according to claim 1, characterized in that: The sealing ring is larger than the size of the double-port.

3. The integrated pen cap inner sealing plug structure according to claim 1, characterized in that: The horizontal bars are distributed horizontally and are evenly spaced.

4. The integrated pen cap inner sealing plug structure according to claim 1, characterized in that: The size of the single-sided rubber stopper matches the size of the inner wall of the tube opening.

5. The integrated pen cap inner sealing plug structure according to claim 1, characterized in that: The length of the pulling rubber strip is greater than the height of the inner wall of the single-sided rubber plug.