Multi-section pressure buffering type pen tube rubber plug

Abstract

The utility model discloses a multistage pressure buffering type pen tube rubber plug, including A section plunger, A section plunger top is equipped with the plug top cover, the race top cover bottom is connected with A section buffer plug, corresponding A section buffer plug is equipped with A section buffer cavity in A section plunger, A section buffer plug bottom is connected with B section plunger, corresponding A section buffer plug bottom is equipped with the through -going orifice in B section plunger top, the through -going orifice bottom is connected with B section buffer plug, corresponding B section buffer plug is equipped with B section buffer cavity in B section plunger, B section buffer plug bottom is connected with the plug bottom, the plug bottom top is connected with the vertical rod, corresponding vertical rod is equipped with the through -hole on the plug top cover. The utility model discloses simple structure, convenient and practical, can effectively buffer the air pressure change in pen tube, and good sealing.

Description

Technical Field

[0001] This utility model relates to the field of pen tube sealing rubber stopper technology, and in particular to a multi-segment pressure buffer type pen tube rubber stopper. Background Technology

[0002] Rubber stoppers (also known as pharmaceutical stoppers or rubber bottle stoppers) are sealing components made of rubber elastomers. They are mainly used for sealing bottle-shaped containers in pharmaceutical packaging, providing functions such as sealing protection, leak prevention, and anti-counterfeiting. They are specifically designed for sealing glass, plastic, and other pharmaceutical bottle-shaped containers. Their core function is to isolate the medicine from external environmental contamination, ensuring the stability and safety of the medicine during storage and transportation.

[0003] When a material containing hydrogen peroxide is sealed in a pen tube and stored or transported, it is very easy for the gas pressure generated by the decomposition of hydrogen peroxide to expand and push up the rubber stopper at the opening of the pen tube, causing it to leak out of the pen tube. In order to solve the above problem, this utility model proposes a multi-stage pressure buffer type pen tube rubber stopper. Utility Model Content

[0004] 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 provide a multi-segment pressure-buffered pen tube stopper that is simple in structure, convenient and practical, effectively buffers and adapts to changes in air pressure inside the pen tube, and has good sealing performance.

[0005] The technical solution is as follows: A multi-segment pressure-buffered pen tube stopper includes an A-segment plunger, a stopper cap at the top of the A-segment plunger, a stopper buffer plug connected to the bottom of the stopper cap, a stopper buffer cavity corresponding to the A-segment buffer plug within the A-segment plunger, a B-segment plunger connected to the bottom of the A-segment buffer plug, a through-hole at the top of the B-segment plunger corresponding to the bottom of the A-segment buffer plug, a stopper buffer cavity corresponding to the B-segment buffer plug within the B-segment plunger, a stopper bottom connected to the bottom of the B-segment buffer plug, a vertical rod connected to the top of the stopper bottom, and a through-hole on the stopper cap corresponding to the vertical rod.

[0006] Furthermore, the diameter of the plug top cover is larger than the diameter of the A-section plug, and the bottom of the A-section plug is open.

[0007] Furthermore, the A-section plunger and the B-section plunger have the same diameter, the A-section buffer plug and the B-section buffer plug have the same diameter, the A-section buffer plug has a smaller diameter than the A-section plunger, and the A-section buffer plug and the B-section buffer plug are tubular.

[0008] Furthermore, the bottom of the A-section buffer plug is fixedly connected to the top of the B-section plunger, and the bottom of the B-section plunger is open.

[0009] Furthermore, the diameter of the through hole is larger than the diameter of the upright.

[0010] Furthermore, both the A-section buffer plug and the B-section buffer plug are made of soft, thin rubber sheets, and the upright is made of plastic.

[0011] The beneficial effects of this utility model are as follows: By splitting the plunger into segment A and segment B (segment A plunger and segment B plunger), the sealing performance of the rubber stopper to the pen tube opening is enhanced by using multiple segments of plunger. A buffer plug (including segment A buffer plug and segment B buffer plug) is connected between the two segments of plunger. The buffer plug (segment A buffer plug and segment B buffer plug), which can be flexibly folded and stored in the corresponding buffer chambers (segment A buffer chamber and segment B buffer chamber), improves the buffering capacity and adaptability of the rubber stopper when the air pressure inside the pen tube changes, thus enhancing the sealing practicality of this utility model. 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.

[0013] Figure 2 This is a schematic diagram of the A-section rubber stopper assembly in this utility model.

[0014] Figure 3 This is a schematic diagram of the B-section rubber stopper assembly in this utility model.

[0015] Figure 4 This is a schematic diagram of the piston rod assembly in this utility model.

[0016] Figure 5 This is a schematic diagram of the compressed structure of this utility model.

[0017] In the diagram: 1. A-section plunger; 2. A-section buffer plug; 3. B-section plunger; 4. B-section buffer plug; 5. Plug bottom; 6. Vertical rod; 101. A-section buffer chamber; 102. Plug top cover; 103. Through hole; 301. Through port; 302. B-section buffer chamber; 601. Limiting plug. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] Please see Figures 1 to 5 As shown, a multi-segment pressure-buffered pen tube stopper includes an A-segment plunger 1, a stopper cap 102 at the top of the A-segment plunger 1, the diameter of the stopper cap 102 being larger than the diameter of the A-segment plunger 1, an A-segment buffer stopper 2 connected to the bottom of the stopper cap 102, and an A-segment buffer cavity 101 corresponding to the A-segment buffer stopper 2 within the A-segment plunger 1, the bottom of the A-segment plunger 1 being open; The bottom of the A-segment buffer plug 2 is connected to the B-segment plunger 3. The bottom of the A-segment buffer plug 2 is fixedly connected to the top of the B-segment plunger 3. A through-hole 301 is provided at the top of the B-segment plunger 3 corresponding to the bottom of the A-segment buffer plug 2. The bottom of the through-hole 301 is connected to the B-segment buffer plug 4. A B-segment buffer cavity 302 is provided inside the B-segment plunger 3 corresponding to the B-segment buffer plug 4. The bottom of the B-segment plunger 3 is open. The bottom of the B-segment buffer plug 4 is connected to the plug bottom 5. A vertical rod 6 is connected to the top of the plug bottom 5. A through hole 103 is provided on the plug top cover 102 corresponding to the vertical rod 6. The diameter of the through hole 103 is larger than the diameter of the vertical rod 6.

[0021] like Figure 4 The A-section plunger 1 and B-section plunger 3 have the same diameter. The A-section buffer plug 2 and B-section buffer plug 4 have the same diameter. The diameter of the A-section buffer plug 2 is smaller than that of the A-section plunger 1. The A-section buffer plug 2 and B-section buffer plug 4 are tubular. Both the A-section buffer plug 2 and B-section buffer plug 4 are made of soft, thin rubber sheets. The upright rod 6 is made of plastic.

[0022] According to the above scheme, the through hole 103, which has a diameter larger than that of the upright rod 6, can be used to discharge the gas inside the rubber stopper when the rubber stopper is compressed and buffered as a whole.

[0023] like Figure 5 As shown, the soft, thin rubber sheet-made buffer plugs (A-section buffer plug 2 and B-section buffer plug 4) can be gently squeezed and compressed into the corresponding buffer chambers (A-section buffer chamber 101 and B-section buffer chamber 302) when the air pressure inside the pen tube changes and squeezes the rubber plugs, so that the rubber plugs of this utility model can adapt to the air pressure changes inside the pen tube without displacement.

[0024] The upright rod 6, made of plastic, can straighten the rubber stopper when it is plugging, preventing the A-section buffer stopper 2 and the B-section buffer stopper 6 from being compressed prematurely.

[0025] 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. A multi-segment pressure-buffered pen tube stopper, characterized in that: It includes an A-segment plunger, a plunger top cap, an A-segment buffer plug connected to the bottom of the plunger top cap, an A-segment buffer cavity corresponding to the A-segment buffer plug inside the A-segment plunger, a B-segment plunger connected to the bottom of the A-segment buffer plug, a through-hole corresponding to the bottom of the A-segment buffer plug at the top of the B-segment plunger, a B-segment buffer plug connected to the bottom of the through-hole, a B-segment buffer cavity corresponding to the B-segment buffer plug inside the B-segment plunger, a plug bottom connected to the bottom of the B-segment buffer plug, a vertical rod connected to the top of the plug bottom, and a through-hole corresponding to the vertical rod on the plunger top cap.

2. The multi-segment pressure-buffered pen tube stopper according to claim 1, characterized in that: The diameter of the plug top cap is larger than the diameter of the A-section plug, and the bottom of the A-section plug is open.

3. The multi-segment pressure-buffered pen tube stopper according to claim 1, characterized in that: The A-section plunger and the B-section plunger have the same diameter, the A-section buffer plug and the B-section buffer plug have the same diameter, the A-section buffer plug has a smaller diameter than the A-section plunger, and the A-section buffer plug and the B-section buffer plug are tubular.

4. The multi-segment pressure-buffered pen tube stopper according to claim 1, characterized in that: The bottom of the A-section buffer plug is fixedly connected to the top of the B-section plunger, and the bottom of the B-section plunger is open.

5. The multi-segment pressure-buffered pen tube stopper according to claim 1, characterized in that: The diameter of the through hole is larger than the diameter of the upright.

6. The multi-segment pressure-buffered pen tube stopper according to claim 1, characterized in that: Both the A-section buffer plug and the B-section buffer plug are made of soft, thin rubber sheets, and the upright is made of plastic.

Images