Plastic packaging bottle with leakage-proof cover
Through the innovative design of the leak-proof cap and sliding adjustment mechanism, the problems of time-consuming sealing and inconvenient handling of plastic packaging bottles are solved, achieving rapid sealing and convenient handling, and is suitable for plastic packaging bottles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA HONGYUAN SHENG PACKAGING CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-14
AI Technical Summary
The sealing process of existing plastic packaging bottles is time-consuming, prone to leakage due to wear and tear, inconvenient to handle, takes up a lot of hand time, and affects long-term carrying.
The bottle cap features a leak-proof design, utilizing a clamping and stabilizing curved plate and an interlocking stabilizing ring to achieve rapid sealing through an elastic transmission mechanism; the sliding adjustment mechanism simplifies handling through a telescopic interlocking round head and an adjusting soft strap.
It achieves rapid sealing, avoids water leakage, simplifies the handling process, and improves portability.
Smart Images

Figure CN224492085U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic packaging bottle technology, specifically a plastic packaging bottle with a leak-proof cap. Background Technology
[0002] Packaging bottles are common packaging containers, mostly used to hold medicines, and are mostly made of plastic. Traditional plastic packaging bottles are composed of a bottle body, a connecting tube, and a bottle cap. The bottle cap and the connecting tube on the bottle body are assembled by a threaded connection.
[0003] The existing packaging bottle assembly method is relatively simple. In most cases, the force required to tighten the cap is too great, resulting in the bottle body and cap being connected too tightly. This makes it difficult to open the bottle quickly and easily when needed, causing inconvenience to users.
[0004] To overcome the above-mentioned defects, the prior art (Chinese patent publication number: CN220221819U, publication date: 2023-12-22) discloses a plastic packaging bottle with a flip-top and screw-top opening mechanism, relating to the field of packaging bottle technology. The bottle includes a bottle body with an internally threaded cap on top and an externally threaded cylinder fixed to the top of the bottle body. The internally threaded cap is fitted onto the outer wall of the externally threaded cylinder, and the inner wall of the internally threaded cap is threadedly connected to the outer wall of the externally threaded cylinder. This design allows the internally threaded cap to be detachably assembled with the bottle body through its threaded connection to the outer wall of the externally threaded cylinder. Furthermore, the cap can be disengaged by a front-end lever, causing the locking strip to separate from the locking groove on the internally threaded cap, thus exposing the pouring groove in the top groove. This allows for direct pouring of the contents of the bottle when it is inconvenient to disassemble the bottle body and the internally threaded cap, making the operation simple and convenient and increasing the practicality of the packaging bottle.
[0005] While the above design can solve the aforementioned problems, existing designs mostly rely on screw threads or caps to open when sealing the top of the plastic bottle. This makes opening and closing the cap time-consuming, and due to the plastic material, long-term wear can cause the connection to become loose, leading to leakage at the joint. In addition, the existing plastic bottle design is very inconvenient to handle, requiring a long time to hold the bottle, making the operation of handling the water bottle inconvenient, time-consuming, and laborious, and not conducive to carrying it for a long time. Utility Model Content
[0006] The purpose of this utility model is to provide a plastic packaging bottle with a leak-proof cap, so as to solve the problem mentioned in the background art that most existing designs rely on threaded or screw cap opening methods when sealing the top of the plastic bottle. Such designs make the opening and closing of the bottle cap time-consuming, and due to the plastic material, long-term wear will cause the connection to become loose and leak at the joint. At the same time, the existing plastic bottle design is very inconvenient to handle, requiring a long time to hold the bottle, making the operation of handling the water bottle very inconvenient, time-consuming and laborious, and not conducive to long-term carrying.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a plastic packaging bottle with a leak-proof cap, comprising a plastic packaging bottle, an integral connector installed on the top of the plastic packaging bottle, an elastic transmission mechanism for engaging a sliding sealing plug installed on the top of the integral connector, the elastic transmission mechanism including a leak-proof cap, the leak-proof cap being nested on the outer surface of the integral connector, a sliding adjustment frame installed on the outer surface of the plastic packaging bottle, and a sliding adjustment mechanism for engaging a telescopic fitting round head installed inside the sliding adjustment frame.
[0008] Furthermore, the sliding adjustment mechanism includes a rotating connecting block, which is fixedly installed on the lower surface of the plastic packaging bottle. An adjusting soft band is installed inside the rotating connecting block, and a top sliding block is installed on the top of the adjusting soft band.
[0009] Furthermore, the top sliding block is slidably installed inside the sliding adjustment frame, and the end of the adjusting soft belt is rotatably installed inside the rotating connecting block. The telescopic fitting round head is slidably installed in two groups inside the top sliding block, and the left and right sides of the sliding adjustment frame are provided with fitting and stabilizing inner grooves.
[0010] Furthermore, a locking stabilizing ring is installed on the top outer surface of the integrated connector, and a rotating inner groove is opened on the upper surface of the leak-proof cap. A fixed rotating plate is installed inside the rotating inner groove, and a clamping stabilizing bending plate is installed on the inner surface of the fixed rotating plate.
[0011] Furthermore, the clamping and stabilizing bending plate is semi-circular in design, and the rotation trajectory of the clamping and stabilizing bending plate corresponds to the installation position of the engagement stabilizing ring. The inner surface of the leak-proof bottle cap is equipped with a reset compression spring, and the other end of the reset compression spring is fixedly installed on the outer surface of the fixed rotating plate.
[0012] Furthermore, a sliding sealing plug is installed on the inner surface of the leak-proof bottle cap, and the installation position of the sliding sealing plug corresponds to the top opening position of the integrated connector. Two sets of the fixed rotating plate, the clamping stabilizing bending plate, and the reset compression spring are symmetrically installed about the center point of the leak-proof bottle cap, and the fixed rotating plate is rotatably installed inside the rotating inner groove.
[0013] Furthermore, the opening position of the fitting and stabilizing inner groove corresponds to the movement trajectory of the telescopic fitting round head, and the inner surface of the sliding adjustment frame contacts the outer surface of the top sliding block to form a sliding structure, and the adjusting soft strip is designed with flexible anti-slip material.
[0014] Compared with the prior art, the beneficial effects of this utility model are: When the plastic packaging bottle with the leak-proof cap needs to be sealed at the top of the integrated connector, the leak-proof cap is directly aligned with the opening and pressed vertically down. At this time, after the clamping stabilizing plate and the biting stabilizing ring come into contact, they will be connected due to the auxiliary contraction of the reset compression spring until the sliding sealing plug completes the nesting and sealing of the top opening of the integrated connector. This design makes the opening and closing of the cap very quick and will not cause great wear due to the plastic material, thus preventing water leakage.
[0015] Furthermore, when the length of the adjustable strap needs to be adjusted, the telescopic fitting head is pressed inward simultaneously. At this time, the top sliding block is stretched and slid downward by adjusting the strap, causing the telescopic fitting head to retract into the interior of the top sliding block. The telescopic fitting head will automatically extend and fix itself when it slides into the appropriate position of the fitting and stabilizing inner groove. This design makes it more convenient to take out plastic bottles and is suitable for long-term carrying.
[0016] Furthermore, two sets of fixed rotating plates, clamping stabilizing plates, and reset compression springs are symmetrically installed about the center point of the integrated connector, so that the integrated connector can improve the sealing performance of the plastic bottle through the engagement of the interlocking stabilizing ring and the clamping stabilizing plate. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the plastic packaging bottle of this utility model;
[0018] Figure 2 This is a three-dimensional structural diagram of the leak-proof bottle cap of this utility model;
[0019] Figure 3 This is a three-dimensional structural diagram of the sliding adjustment frame of this utility model;
[0020] Figure 4 This is a three-dimensional structural diagram of the sliding sealing plug of this utility model;
[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the adjustable soft band of this utility model;
[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the telescopic interlocking round head of this utility model.
[0023] In the diagram: 1. Plastic packaging bottle; 2. Integrated connector; 3. Leak-proof cap; 4. Sliding adjustment frame; 5. Rotating connecting block; 6. Fitting and stabilizing inner groove; 7. Adjusting soft belt; 8. Engaging and stabilizing ring; 9. Sliding sealing plug; 10. Fixed rotating plate; 11. Clamping and stabilizing curved plate; 12. Reset compression spring; 13. Rotating inner groove; 14. Top sliding block; 15. Telescopic fitting round head. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example 1: Please refer to Figure 2 , Figure 3 and Figure 4 This utility model provides the following technical solution: a plastic packaging bottle with a leak-proof cap, comprising a plastic packaging bottle 1, an integrated connector 2 installed on the top of the plastic packaging bottle 1, and an elastic transmission mechanism for engaging a sliding sealing plug 9 installed on the top of the integrated connector 2. The elastic transmission mechanism includes a leak-proof cap 3, such as... Figure 3 As shown, the leak-proof bottle cap 3 is nested on the outer surface of the integrated connector 2, and the outer surface of the plastic packaging bottle 1 is equipped with a sliding adjustment frame 4. The sliding adjustment frame 4 is equipped with a sliding adjustment mechanism for engaging the telescopic fitting round head 15.
[0026] like Figure 2 , Figure 3 and Figure 4 The technical solution shown addresses the problem that existing designs for sealing plastic bottles mostly rely on threaded or screw-on caps, which are time-consuming to open and close. Furthermore, due to the plastic material, prolonged wear can lead to loose connections and leaks at the joint. The solution discloses: an interlocking stabilizing ring 8 is installed on the top outer surface of the integrated connector 2; a rotating inner groove 13 is formed on the upper surface of the leak-proof cap 3; a fixed rotating plate 10 is installed inside the rotating inner groove 13; and a clamping stabilizing curved plate 11 is installed on the inner surface of the fixed rotating plate 10. The clamping stabilizing curved plate 11 has a semi-circular design. Figure 4As shown, the rotation trajectory of the clamping stabilizing bending plate 11 corresponds to the installation position of the biting stabilizing ring 8. A reset compression spring 12 is installed on the inner surface of the leak-proof bottle cap 3, and the other end of the reset compression spring 12 is fixedly installed on the outer surface of the fixed rotating plate 10. A sliding sealing plug 9 is installed on the inner surface of the leak-proof bottle cap 3, and the installation position of the sliding sealing plug 9 corresponds to the top opening position of the integrated connector 2. Two sets of fixed rotating plate 10, clamping stabilizing bending plate 11 and reset compression spring 12 are symmetrically installed about the center point of the leak-proof bottle cap 3, and the fixed rotating plate 10 is rotatably installed inside the rotating inner groove 13.
[0027] When a top sealing operation is required on the inside of the plastic packaging bottle 1, the leak-proof cap 3 is directly fixed and aligned with the top of the integrated connector 2 fixedly installed on the upper surface of the plastic packaging bottle 1. At this time, the clamping and stabilizing bending plate 11 installed inside the leak-proof cap 3 will move downward synchronously. As the leak-proof cap 3 moves downward, the clamping and stabilizing bending plate 11 will gradually contact the outer surface of the interlocking stabilizing ring 8 fixedly installed on the outer surface of the integrated connector 2. Since the clamping and stabilizing bending plate 11 is fixedly installed on the lower inner surface of the fixed rotating plate 10, such as Figure 4 As shown, the fixed rotating plate 10 is rotatably installed inside the rotating inner groove 13 opened on the upper surface of the leak-proof bottle cap 3. Therefore, the contact between the biting stabilizing ring 8 and the clamping stabilizing bending plate 11 will cause the fixed rotating plate 10 to rotate outward along the inner groove 13. During the rotation of the fixed rotating plate 10, it will contact the reset compression spring 12 fixedly installed on the back and generate lateral contraction. During the downward movement of the leak-proof bottle cap 3, the sliding sealing plug 9 fixedly installed on the inner surface will move synchronously until the sliding sealing plug 9 enters the top opening of the integrated connector 2 and completes the docking. The biting stabilizing ring 8 and the clamping stabilizing bending plate 11 will simultaneously complete the stable clamping. This design makes the opening and closing speed of the plastic bottle faster.
[0028] Example 2: Figure 1 , Figure 5 and Figure 6 The technical solution shown addresses the problem that existing designs of plastic bottles are inconvenient to handle, requiring prolonged hand use, making bottle handling time-consuming, laborious, and unsuitable for long-term carrying. The solution discloses a sliding adjustment mechanism including a rotating connecting block 5, which is fixedly installed on the lower surface of the plastic bottle 1. An adjusting soft band 7 is installed inside the rotating connecting block 5, and a top sliding block 14 is installed on the top of the adjusting soft band 7. Figure 5As shown, the top sliding block 14 is slidably installed inside the sliding adjustment frame 4, and the end of the adjusting soft belt 7 is rotatably installed inside the rotating connecting block 5. The telescopic fitting round head 15 is slidably installed in two groups inside the top sliding block 14. The left and right sides of the sliding adjustment frame 4 are provided with fitting and stabilizing inner grooves 6. The opening position of the fitting and stabilizing inner grooves 6 corresponds to the movement trajectory of the telescopic fitting round head 15. The inner surface of the sliding adjustment frame 4 and the outer surface of the top sliding block 14 are in contact to form a sliding structure. Moreover, the adjusting soft belt 7 is designed with flexible anti-slip material.
[0029] When adjusting the length of the adjustable soft band 7, first, simultaneously squeeze the telescopic fitting round head 15 inward, causing it to retract laterally along the left and right sides of the top sliding block 14. Then, pull the adjustable soft band 7 downward. Since the top sliding block 14 is fixedly installed on the top of the adjustable soft band 7, it will be pulled and vertically limited to slide within the sliding adjustment frame 4 fixedly installed on the outer surface of the plastic packaging bottle 1. At this time, the telescopic fitting round head 15 will disengage from the corresponding fitting and stabilizing inner grooves 6 on the left and right sides of the sliding adjustment frame 4. Figure 6 As shown, when the adjusting soft band 7 moves the top sliding block 14 downward to the appropriate picking position, the telescopic fitting round head 15 will extend outward along the inside of the left and right sides of the top sliding block 14, so that the telescopic fitting round head 15 and the corresponding fitting stabilizing inner groove 6 opened at the appropriate position are properly fitted. The lower end of the adjusting soft band 7 will rotate around the rotating connecting block 5 fixedly installed on the outer surface of the plastic packaging bottle 1, so that the adjusting soft band 7 is adjusted to the appropriate picking position for easy picking.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A plastic packaging bottle with a leak-proof cap, comprising a plastic packaging bottle (1), wherein an integral connector (2) is installed on the top of the plastic packaging bottle (1), characterized in that: The top of the integrated connector (2) is equipped with an elastic transmission mechanism for docking with the sliding sealing plug (9); The elastic transmission mechanism includes a leak-proof bottle cap (3), and the leak-proof bottle cap (3) is nested on the outer surface of the integrated connector (2). The outer surface of the plastic packaging bottle (1) is equipped with a sliding adjustment frame (4), and the sliding adjustment frame (4) is equipped with a sliding adjustment mechanism for engaging the telescopic fitting round head (15).
2. A plastic packaging bottle with a leak-proof cap according to claim 1, characterized in that: The sliding adjustment mechanism includes a rotating connecting block (5), which is fixedly installed on the lower surface of the plastic packaging bottle (1). An adjusting soft belt (7) is installed inside the rotating connecting block (5), and a top sliding block (14) is installed on the top of the adjusting soft belt (7).
3. A plastic packaging bottle with a leak-proof cap according to claim 2, characterized in that: The top sliding block (14) is slidably installed inside the sliding adjustment frame (4), and the end of the adjusting soft belt (7) is rotatably installed inside the rotating connecting block (5). The telescopic fitting round head (15) is slidably installed in two groups inside the top sliding block (14), and the left and right sides of the sliding adjustment frame (4) are provided with fitting and stabilizing inner grooves (6).
4. A plastic packaging bottle with a leak-proof cap according to claim 1, characterized in that: The top outer surface of the integrated connector (2) is fitted with a biting stabilizing ring (8), and the upper surface of the leak-proof cap (3) is provided with a rotating inner groove (13). The rotating inner groove (13) is fitted with a fixed rotating plate (10), and the inner surface of the fixed rotating plate (10) is fitted with a clamping stabilizing bending plate (11).
5. A plastic packaging bottle with a leak-proof cap according to claim 4, characterized in that: The clamping stabilizing plate (11) is semi-circular in design, and the rotation trajectory of the clamping stabilizing plate (11) corresponds to the installation position of the biting stabilizing ring (8). The inner surface of the leak-proof bottle cap (3) is equipped with a reset compression spring (12), and the other end of the reset compression spring (12) is fixedly installed on the outer surface of the fixed rotating plate (10).
6. A plastic packaging bottle with a leak-proof cap according to claim 5, characterized in that: The inner surface of the leak-proof bottle cap (3) is equipped with a sliding sealing plug (9), and the installation position of the sliding sealing plug (9) corresponds to the top opening position of the integrated connector (2). The fixed rotating plate (10), the clamping stabilizing bending plate (11) and the reset compression spring (12) are symmetrically installed on the left and right sides about the center point of the leak-proof bottle cap (3), and the fixed rotating plate (10) is rotatably installed inside the rotating inner groove (13).
7. A plastic packaging bottle with a leak-proof cap according to claim 3, characterized in that: The opening position of the fitting and stabilizing inner groove (6) corresponds to the movement trajectory of the telescopic fitting round head (15), and the inner surface of the sliding adjustment frame (4) and the outer surface of the top sliding block (14) form a sliding structure, and the adjustment soft belt (7) is designed with flexible anti-slip material.