A type of plastic medicine bottle designed to prevent accidental opening
The design of the three-way flexible valve plate structure solves the problem of complicated operation of existing plastic medicine bottles, realizes fast and convenient medicine pouring and sealing, and improves user experience and medicine stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG GUANDA PHARM TECH CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-30
AI Technical Summary
The caps of existing plastic medicine bottles are complex in design, making them difficult to open quickly and easily, especially for users with poor hand dexterity. They also pose problems with the stability and sealing of the medicine.
It adopts a three-way elastic valve plate structure. By pressing the pressure plate on the bottle cap, the guide rod drives the valve plate to move down and tilt up, the material trough is open, and the medicine is poured out from the material trough and the outlet. After pouring out, the valve plate automatically resets and closes.
It enables a fast and convenient medicine dispensing process, reduces operational difficulty, improves user experience, ensures medicine stability and sealing, and avoids medicine waste and contamination.
Smart Images

Figure CN224428610U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bottle and container technology, specifically to a plastic medicine bottle designed to prevent accidental opening. Background Technology
[0002] Plastic medicine bottles, as common pharmaceutical packaging containers, are widely used in the storage and transportation of medicines due to their advantages such as being lightweight, corrosion-resistant, and inexpensive. Their structure typically includes a bottle body, a cap, and a sealing device. The bottle body is mostly cylindrical or square for easy stacking and storage, and may have graduations to help users measure dosage. The cap is often screw-on to ensure a tight seal, preventing air, moisture, and contaminants from entering and protecting the stability of the medicine. Some medicine bottles are also equipped with droppers or nozzles for convenient dispensing. During use, users simply open the cap, ensure it is sealed, and then pour out the medicine directly or use an auxiliary tool to dispense it. After use, the cap should be tightly closed immediately, and the medicine stored in a dry, cool environment, following the storage and usage recommendations in the instructions.
[0003] For example, the environmentally friendly plastic bottle cap for preventing accidental opening by children, disclosed in authorization announcement number CN215362735U, includes a bottle body, a cap body, a scratch-resistant sheet metal, and a movable groove. A connecting bottle opening is fixedly connected to the top of the bottle body, and an external thread is provided on the external connection of the connecting bottle opening. The cap body is located outside the connecting bottle opening, and a scratch-resistant sheet metal is fixedly connected to the top of the cap body. The scratch-resistant sheet metal is positioned at the top and outer side of the cap body. By pulling outwards the connecting rod and the folding handle, the internal sliding component and the connecting fixing rod are moved to the left along the movable groove. The internal sliding component slides inside the groove, assisting the internal sliding mechanism. The movement of the sliding component and the connecting rod, and the control of the connecting rod moving away from the positioning groove, enables the disassembly of the entire bottle cap. However, while the above technology utilizes accessories such as the connecting rod, positioning groove, sliding groove, compression spring, and folding handle to prevent accidental opening, it also introduces the problem of complex drug dispensing operations. That is, the bottle cap needs to be opened in the correct order, and the operation of multiple components such as the folding handle, sliding groove, and compression spring must be coordinated to successfully complete the drug dispensing operation. This can cause confusion or even operational errors for some older users or users with poor hand dexterity, increasing the difficulty and inconvenience of use. Utility Model Content
[0004] The purpose of this invention is to provide a plastic medicine bottle that prevents accidental opening. By pressing down on the pressure plate in the bottle cap, the pressure plate moves the three-way elastic valve plate structure downwards via a guide rod. During the downward movement of the three-way elastic valve plate structure, the valve plate tilts upwards, keeping the upper end of the trough open. This allows the granular medicine in the bottle to be poured out from the trough and the outlet. After the pouring is complete, the pressure plate is released, causing the three-way elastic valve plate structure to reset and the trough to close, thus solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic medicine bottle designed to prevent accidental opening, comprising a bottle body, a bottle cap installed at the opening at the top of the bottle body, a pressure plate that can be pressed down on the top of the bottle cap, and a baffle plate integrally formed at one end inside the bottle body. The baffle plate has three equally spaced upper protrusions integrally formed at the edge of its top. Each upper protrusion has a fully penetrating material groove inside. A guide rod extending into the bottle body is installed at the bottom of the pressure plate, and a three-way elastic valve plate structure is installed at the bottom of the guide rod. The movable end of the three-way elastic valve plate structure contacts the top of the upper protrusions and blocks the material groove. The bottom of the three-way elastic valve plate structure is elastically connected to the top of the baffle plate. A discharge nozzle is provided on one outer wall of the bottle body.
[0006] Preferably, the three-way elastic valve plate structure includes a central plate installed at the bottom of the guide rod, three annular U-shaped protrusions integrally formed on the outer wall of the central plate, an I-shaped shaft rotatably installed inside the U-shaped protrusions, and baffles fixed at both ends of the I-shaped shaft. A torsion spring is installed on the outer circumferential surface of the I-shaped shaft. In the initial shape of the torsion spring, the lower surface of the baffle is in contact with the upper surface of the upper protrusion.
[0007] Preferably, one end of the torsion spring extends into the interior of the central plate, and the other end of the torsion spring extends into the interior of the baffle.
[0008] Preferably, the top of the baffle plate is equipped with three annularly spaced return springs, and the top of the return springs are connected to the lower surface of the middle plate.
[0009] Preferably, the center of the top of the baffle plate has an integrally formed upward-extending central column, the upper end of which penetrates into the interior of the central plate.
[0010] Preferably, the middle plate and the baffle are both made of hard plastic components, and the lower surface of the baffle plate is provided with an upper recess.
[0011] Compared with existing technologies, the advantages of this utility model are as follows: This anti-accidental opening plastic medicine bottle is equipped with a structure that includes a bottle body, a dispensing nozzle, a bottle cap, a pressure plate, a guide rod, a three-way elastic valve plate structure, and a baffle plate, all working together. When the pressure plate in the bottle cap is pressed down, it moves the three-way elastic valve plate structure downwards via the guide rod. During this downward movement, the valve plate tilts upwards, keeping the upper end of the trough open, allowing the granular medicine in the bottle to be poured out from the trough and the dispensing nozzle. After pouring, releasing the pressure plate resets the three-way elastic valve plate structure, closing the trough. The user only needs to gently press the pressure plate on the bottle cap to complete the medicine pouring process, requiring no complicated steps or additional tools, greatly improving efficiency. The operation is simplified and the user experience is improved. Especially in cases where quick medication is needed or in emergencies, medication can be poured out with one hand, significantly improving convenience and efficiency. Secondly, the three-way flexible valve plate structure is closed when not under pressure, effectively preventing air, moisture, or impurities from entering the medicine bottle, ensuring the stability and safety of the medication. During pressing, the valve plate tilts upward, and the upper end of the trough remains open, allowing the medication to pour out smoothly, avoiding potential blockages or leaks during the pouring process. This ensures that the flow of the medication is controlled within a controlled range, preventing waste and contamination risks. Finally, after the medication is poured out, releasing the pressure plate causes the three-way flexible valve plate structure to automatically reset, closing the trough and maintaining a closed state. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0013] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;
[0014] Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention;
[0015] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the bottle body of this utility model. Figure 1 ;
[0016] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the bottle body of this utility model. Figure 2 .
[0017] In the diagram: 1. Bottle body; 2. Bottle cap; 3. Discharge nozzle; 4. Pressure plate; 5. Guide rod; 6. Material baffle; 601. Upper boss; 602. Material trough; 603. Central column; 7. Three-way elastic valve plate structure; 701. Central plate; 702. U-shaped protrusion; 703. I-beam shaft; 704. Torsion spring; 705. Baffle; 8. Return spring. 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0019] Please see Figure 1-5 This utility model provides an embodiment of a plastic medicine bottle designed to prevent accidental opening, comprising a bottle body 1, a bottle cap 2 installed at the top opening of the bottle body 1, a pressure plate 4 that can be pressed down on the top of the bottle cap 2, and a baffle plate 6 integrally formed at one end inside the bottle body 1. The baffle plate 6 has three equally spaced upper protrusions 601 integrally formed at the edge of the top of the baffle plate 6. The upper protrusions 601 have a fully penetrating material groove 602 inside. The bottom end of the pressure plate 4 is equipped with a guide rod 5 extending into the bottle body 1, and the bottom end of the guide rod 5 is equipped with a three-way elastic valve plate structure 7. The movable end of the three-way elastic valve plate structure 7 contacts the top of the upper protrusions 601 and blocks the material groove 602. The bottom end of the three-way elastic valve plate structure 7 is elastically connected to the top of the baffle plate 6. A dispensing nozzle 3 is provided on one outer wall of the bottle body 1.
[0020] The three-way elastic valve plate structure 7 can still maintain its elasticity and sealing performance after high-frequency use. The three-way elastic valve plate structure 7 includes a middle plate 701 installed at the bottom of the guide rod 5, three annular U-shaped protrusions 702 integrally formed on the outer wall of the middle plate 701 with equal spacing, an I-shaped shaft 703 rotatably installed inside the U-shaped protrusions 702, and baffles 705 fixed at both ends of the I-shaped shaft 703. A torsion spring 704 is installed on the outer peripheral surface of the I-shaped shaft 703. In the initial shape of the torsion spring 704, the lower surface of the baffle 705 is in contact with the upper surface of the upper protrusion 601.
[0021] By pressing down the pressure plate 4 and the guide rod 5, the U-shaped protrusion 702 moves downward in the vertical direction. At this time, the return spring 8 is compressed, while the baffle 705 is tilted upward due to the obstruction of the upper protrusion 601. At this time, the torsion spring 704 is compressed and deformed to generate elastic force. As the downward movement of the middle plate 701 increases, the upward tilt of the baffle 705 also increases. That is, the upper end of the material trough 602 is in a normally open state, and the user can tilt the bottle 1 so that the medicine is discharged through the material trough 602 and the discharge nozzle 3 to achieve the purpose of taking out the medicine.
[0022] One end of the torsion spring 704 extends into the interior of the middle plate 701, and the other end of the torsion spring 704 extends into the interior of the baffle 705. Three annularly spaced return springs 8 are installed on the top of the baffle plate 6, and the top of the return springs 8 are connected to the lower surface of the middle plate 701.
[0023] When the user releases the pressure plate 4, the reset spring 8 causes the middle plate 701 to move upward and reset, and the torsion spring 704 also gradually returns to its initial shape until the baffle 705 continues to press on the upper boss 601 and causes the material trough 602 to close.
[0024] A central column 603 extending upward is integrally formed at the center of the top of the baffle plate 6. The upper end of the central column 603 extends into the interior of the central plate 701. The central plate 701 and the baffle plate 705 are both made of hard plastic. The lower surface of the baffle plate 6 is provided with an upper recess. The central column 603 is used to guide the central plate 701 to move up and down stably in the vertical axial direction, reducing the upward and downward deviation of the central plate 701. The function of the baffle plate 6 is to guide and restrict the flow path of the medicine, ensuring that the medicine flows out along the predetermined route during the pouring process.
[0025] In this embodiment, during use, the user first presses the pressure plate 4 on the bottle cap 2 with one hand. The pressure plate 4 transmits pressure to the guide rod 5 through mechanical transmission, causing the three-way elastic valve plate structure 7 to move downwards and compressing each return spring 8. During the pressing process, the elastic design of the three-way elastic valve plate structure 7 allows it to move downwards under pressure, while the valve plate tilts upwards to open the upper end of the material groove 602, changing the upper port of the material groove 602 from its original closed state to a normally open state. Next, as the three-way elastic valve plate structure... With the upward tilt of structure 7, the upper end of the material trough 602 is open, allowing the user to manually pour out the medicine bottle. The medicine falls out from the material trough 602 in the upper boss 601 through the discharge nozzle 3. During this process, the user can control the pressing force and time as needed to adjust the amount of medicine poured out, achieving the purpose of dosage control. After the medicine pouring operation is completed, the user releases the pressure plate 4, and the reset spring 8 and the three-way elastic valve plate structure 7 automatically reset using their elastic characteristics, returning to the original closed state and resealing the material trough 602 to ensure that the medicine will not accidentally flow out or become contaminated when not in operation.
Claims
1. A child-resistant plastic pill bottle, characterized by: The bottle includes a bottle body (1), a bottle cap (2) installed at the top opening of the bottle body (1), a pressure plate (4) that can be pressed down on the top of the bottle cap (2), and a baffle plate (6) integrally formed at one end inside the bottle body (1). The baffle plate (6) has three equally spaced upper bosses (601) integrally formed at the edge of the top of the baffle plate (6). The upper bosses (601) have a material groove (602) that is completely through. The bottom end of the pressure plate (4) is equipped with a guide rod (5) that extends into the bottle body (1). The bottom end of the guide rod (5) is equipped with a three-way elastic valve plate structure (7). The movable end of the three-way elastic valve plate structure (7) is in contact with the top of the upper bosses (601) and blocks the material groove (602). The bottom end of the three-way elastic valve plate structure (7) is elastically connected to the top of the baffle plate (6). A discharge nozzle (3) is provided on one side of the outer wall of the bottle body (1).
2. A child-resistant plastic medicine bottle as defined in claim 1, wherein: The three-way elastic valve plate structure (7) includes a middle plate (701) installed at the bottom of the guide rod (5), three annular U-shaped protrusions (702) integrally formed on the outer wall of the middle plate (701), an I-shaped shaft (703) rotatably installed inside the U-shaped protrusions (702), and baffles (705) fixed at both ends of the I-shaped shaft (703). A torsion spring (704) is installed on the outer circumferential surface of the I-shaped shaft (703). In the initial shape of the torsion spring (704), the lower surface of the baffle (705) is in contact with the upper surface of the upper boss (601).
3. A child-resistant plastic medicine bottle as defined in claim 2, wherein: One end of the torsion spring (704) extends into the interior of the central plate (701), and the other end of the torsion spring (704) extends into the interior of the baffle (705).
4. The anti-accidental opening plastic medicine bottle according to claim 2, characterized in that: The top of the baffle plate (6) is equipped with three annularly spaced return springs (8), and the top of the return springs (8) is connected to the lower surface of the middle plate (701).
5. A plastic medicine bottle designed to prevent accidental opening according to claim 2, characterized in that: The baffle plate (6) has an integrally formed central column (603) extending upward at the center of its top, with the upper end of the central column (603) penetrating into the interior of the central plate (701).
6. A plastic medicine bottle designed to prevent accidental opening according to claim 2, characterized in that: The middle plate (701) and the baffle (705) are both made of hard plastic components, and the lower surface of the baffle plate (6) is provided with an upper recess.