Pressure-resistant polymer cream bottle based on three-piece strong buckle combination

Abstract

The utility model discloses a kind of pressure-resistant high-molecular cream bottle based on three-piece strong buckle combination, belong to cosmetic packaging container technical field, to solve the existing three-piece cream bottle cap piece taking and placing inconvenient, easy to pollute waste, when inner cover is not screwed, easy to leak liquid and the problem of installation sleeve residual cream.The cream bottle includes bottle body, installation sleeve with outer thread, cover piece with flanging, inner cover and outer cover, also be equipped with support plate, support shaft, limit plate, rotating ring and elastic component;Support plate is installed in the top center of cover piece, support shaft is coaxially installed in the top of support plate, limit plate is installed in the top of support shaft;Rotating ring rotatably sets support shaft and is located between support plate and limit plate;Elastic component one end is connected with the inner wall of inner cover top, the other end is connected with the top of rotating ring;Cover piece outer circumferential side wall is equipped with sealing convex ring, can enhance sealing and clean installation sleeve inner wall cream.The utility model improves the convenience and reliability of use, is suitable for cream cosmetic pressure-resistant sealing packaging.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic packaging container technology, and in particular to a pressure-resistant polymer cream bottle based on a three-piece strong buckle assembly. Background Technology

[0002] In the cosmetics packaging industry, creams and ointments, due to their semi-fluid, paste-like form, require stringent requirements for the sealing and leak-proof properties, structural stability, and ease of use of their packaging containers. Currently, most high-performance cream and ointment bottles on the market adopt a three-piece, strong-locking assembly structure consisting of an outer cap, an inner cap, and a cap flap. The inner cap has internal threads that engage with the threads on the outer side of the bottle. The cap flap has an annular flange on its edge; during use, the flange first engages with the annular groove at the bottle opening to form an initial seal. After tightening the inner cap, the lower end of the inner cap presses the cap flap tightly against the bottle opening, further enhancing the sealing effect. The outer cap fits over the inner cap, protecting it and improving the overall structural strength.

[0003] To meet the requirements for impact and pressure resistance during transportation and carrying, and to prevent containers from being deformed and damaged by external forces, the outer caps and bodies of existing cream bottles are generally made of pressure-resistant polymer materials. These materials have both excellent mechanical strength and weather resistance. Common examples include polypropylene (PP), which has good toughness and chemical resistance and can maintain structural stability under normal pressure.

[0004] However, the existing cap design of this type of three-piece cream bottle has two significant pain points in actual use, which seriously affect the user experience:

[0005] Firstly, the operation and placement of the cap are significantly inconvenient. The cap requires complete manual operation for opening and closing: when taking out the cream, force needs to be applied to the edge of the cap or the auxiliary pull tab on the cap to pull the cap with the folded edge out of the bottle mouth slot; after taking out the cream, the cap needs to be aligned with the bottle mouth and then fastened again. This process is cumbersome and inefficient. More importantly, the side of the cap facing inwards is in direct contact with the cream, and after being pulled out, this side will have residual cream adhering to it, leading to a dilemma in cap placement: if the side with cream adhering to it is placed upwards, fingers can easily touch the cream when taking out the cap later, causing contamination, and the exposed cream is prone to oxidation; if the side with cream adhering to it is placed downwards, the cream on the cap will directly adhere to the table, sink, or other supports, resulting in product waste, contaminating the storage environment, and making cleaning difficult.

[0006] Secondly, carrying the bottle with the inner cap not tightened can easily cause the cap to detach and leak. In actual use, users often fail to fully tighten the inner cap due to temporary use or operational negligence. In this case, the cap is only held in place by the flange in the bottle opening slot, lacking the clamping force of the inner cap. When the user moves the cream bottle, the vibration or tilt of the bottle can easily cause the flange of the cap to detach from the bottle opening slot, resulting in a gap between the cap and the bottle opening. Under vibration or tilting, the cream will quickly leak out from this gap, not only contaminating the outside of the bottle and items inside the bag, but also causing a large amount of cream waste, seriously affecting the reliability of portable use. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides a pressure-resistant polymer cream bottle based on a three-piece strong buckle assembly, which can improve the convenience of opening and closing the lid and taking out the cream, reduce the probability of cream contamination, and improve the reliability of the lid fastening.

[0008] This utility model discloses a pressure-resistant polymer cream bottle based on a three-piece strong-lock assembly, comprising a bottle body, a mounting sleeve with external threads at the top of the bottle body, a cap with a flanged structure fastened to the opening of the mounting sleeve, an inner cap threadedly connected to the mounting sleeve, and an outer cap securely fitted over the inner cap, and further comprising:

[0009] A support plate is installed at the center of the top of the cover plate. A support shaft is coaxially installed at the center of the top of the support plate, and a limit plate is coaxially installed at the top of the support shaft.

[0010] A rotating ring is rotatably sleeved on a support shaft. The rotating ring is located between a support plate and a limiting plate, and the rotating ring is in contact with both the support plate and the limiting plate but does not compress them.

[0011] An elastic component is mounted on the top inner wall of the inner cover, and the other end of the elastic component is mounted on the top of the rotating ring.

[0012] Furthermore, the top of the cover plate is provided with several reinforcing ribs, which are evenly distributed radially on the top of the cover plate, and the inner ends of the reinforcing ribs are connected to the circumferential sidewall of the support plate.

[0013] Furthermore, a sealing protrusion is provided on the outer circumferential sidewall of the cover plate.

[0014] Furthermore, the bottom edge of the cover is provided with a rounded corner structure.

[0015] Furthermore, the outer circumferential sidewall of the cover plate is provided with multiple sealing protrusions, and the multiple sealing protrusions are arranged longitudinally adjacent to each other.

[0016] Furthermore, the sealing convex ring is configured as an arc-shaped convex ring.

[0017] Furthermore, the elastic component is configured as a plurality of elastic plates, which can undergo elastic deformation when longitudinally compressed. The plurality of elastic plates are all configured as convex arc panels. The plurality of elastic plates are arranged in a centrally symmetrical manner about the axis of the inner cover. The top ends of the plurality of elastic plates are all connected to the center part of the top inner wall of the inner cover, and the bottom ends of the plurality of elastic plates are all connected to the top edge part of the rotating ring.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. Improved ease of opening and closing the cover and taking it out: After taking out the cream, there is no need to align the cover separately. Simply hold the outer cover and first fasten the cover onto the installation sleeve, then press the outer cover to compress the elastic component, and finally rotate the outer cover to lock the inner cover to complete the seal. The operation steps are more in line with user habits, simplify the operation process, and improve the efficiency of use.

[0020] 2. Reduce the probability of cream contamination and waste: The cover is always connected to the inner cover through the connecting structure, which prevents the frost-covered surface from contacting the support after the cover is detached; at the same time, the sealing ring can clean the residual cream on the inner wall of the mounting sleeve and return it to the inside, reducing cream adhesion and loss, which reduces both the risk of contamination and product waste.

[0021] 3. Enhanced cover fastening reliability and leak prevention: When the inner cover is locked, the elastic component pushes the cover flap to fit tightly against the installation and dispensing opening, strengthening the seal; even if the inner cover is not fully tightened, the elastic force of the elastic component can still help the cover to fasten tightly, reducing leakage caused by vibration and tilting, and improving portability and reliability.

[0022] 4. Optimize sealing performance and installation sleeve cleanliness: The sealing ring fills the gap between the cover and the installation sleeve, enhancing the sealing effect; on the other hand, when the cover is inserted into the installation sleeve, it can scrape off the frost on the inner wall of the installation sleeve and send it to the inside, automatically cleaning the pick-and-place port, avoiding residual frost from affecting the seal or causing pollution. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the installation structure of the elastic component of this utility model;

[0025] Figure 3 This is the front view of this utility model;

[0026] Figure 4 This is the utility model Figure 3 A cross-sectional view of the AA section;

[0027] The following are labels in the attached diagram: 1. Bottle body; 2. Mounting sleeve; 3. Cover plate; 4. Inner cover; 5. Outer cover; 6. Support plate; 7. Support shaft; 8. Limiting plate; 9. Rotating ring; 10. Elastic component; 11. Reinforcing rib; 12. Sealing convex ring; 13. Rounded corner structure. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0029] like Figures 1 to 4 As shown, the pressure-resistant polymer cream bottle based on a three-piece strong-lock assembly of this utility model includes a bottle body 1, a mounting sleeve 2 with external threads on the top of the bottle body 1, a cap 3 with a flanged structure fastened to the opening of the mounting sleeve 2, an inner cap 4 threadedly connected to the mounting sleeve 2, and an outer cap 5 securely fitted over the inner cap 4. It also includes:

[0030] Support plate 6 is installed at the top center of cover plate 3. Support shaft 7 is coaxially installed at the top center of support plate 6. Limiting plate 8 is coaxially installed at the top of support shaft 7.

[0031] Rotating ring 9, which is rotatably sleeved on support shaft 7, is located between support plate 6 and limiting plate 8, and is in contact with both support plate 6 and limiting plate 8 but not in pressure.

[0032] Elastic component 10 is installed on the top inner wall of the inner cover 4, and the other end of the elastic component 10 is installed on the top of the rotating ring 9.

[0033] In this embodiment,

[0034] Bottle 1: Serves as a storage container for creams, providing basic storage space;

[0035] Installation sleeve 2: connects bottle body 1 and inner cap 4, and the inner cap 4 is installed and removed by the external thread; its opening is used for the cap 3 to be fastened.

[0036] Cover 3: It snaps into the opening of the mounting sleeve 2, and the flange engages with the groove of the mounting sleeve 2 to form a preliminary seal; after the cream is taken out, it can be quickly snapped back together with the help of the outer cover 5;

[0037] Inner cover 4: It is connected to the mounting sleeve 2 by threads. When the outer cover 5 is rotated and locked, it works with the elastic component 10 to push the cover plate 3 to flip and fit tightly against the mounting sleeve 2, thus strengthening the seal. At the same time, it provides a mounting carrier for the elastic component 10 and the outer cover 5 is fitted on the outside.

[0038] Outer cover 5: It is fastened to the outside of the inner cover 4, which protects the inner cover 4 and improves the structural strength. On the other hand, it serves as an operating carrier, making it convenient for users to hold and fasten the cover plate 3, press and compress the elastic component 10, and rotate to lock the inner cover 4, thus simplifying the operation.

[0039] Support plate 6: Installed at the top center of cover plate 3, it fixes support shaft 7, provides a stable mounting base for support shaft 7, connects cover plate 3 with subsequent transmission structure, and ensures effective force transmission;

[0040] Support shaft 7: Coaxially mounted on the top of support plate 6, for the rotating ring 9 to be fitted, providing rotatable support for the rotating ring 9, realizing the connection between the rotating ring 9 and the cover plate 3, and avoiding structural jamming during operation;

[0041] Limiting plate 8: Coaxially mounted on the top of the support shaft 7, it limits the axial displacement of the rotating ring 9, prevents the rotating ring 9 from falling off the support shaft 7, and ensures the stability of the connection structure;

[0042] Rotating ring 9: Rotatably sleeved with support shaft 7, connecting elastic component 10 and cover plate 3, transmitting elastic force of elastic component 10; its rotatable characteristic allows cover plate 3 to flexibly adjust angle when the inner cover 4 is rotated with outer cover 5, ensuring smooth fastening and locking process;

[0043] Elastic component 10: One end is connected to the inner cover 4 and the other end is connected to the rotating ring 9. When the outer cover 5 is pressed, it can be compressed and deformed. After the inner cover 4 is locked, the elastic component 10 is reset and pushes the cover plate 3 to flip up and fit tightly against the installation sleeve 2 opening to strengthen the seal. At the same time, during the opening and closing process, it helps the cover plate 3 to maintain its connection with the inner cover 4 and prevents the cover plate 3 from falling off.

[0044] As a preferred embodiment of the above embodiment, the top end of the cover plate 3 is provided with a plurality of reinforcing ribs 11, which are radially distributed at the top end of the cover plate 3, and the inner ends of the plurality of reinforcing ribs 11 are all connected to the circumferential sidewall of the support plate 6.

[0045] In this embodiment,

[0046] Reinforcing rib 11: Enhances the connection strength between the cover plate 3 and the support plate 6, preventing the cover plate 3 from deforming or breaking when fastened or when the elastic component 10 applies pressure, thereby improving the overall structural load-bearing capacity and stability.

[0047] As a preferred embodiment of the above embodiment, a sealing protrusion 12 is provided on the outer circumferential sidewall of the cover plate 3;

[0048] In this embodiment,

[0049] Sealing protrusion 12: First, when the cover plate 3 is fastened to the mounting sleeve 2, it fits tightly against the inner wall of the mounting sleeve 2's opening, filling the gap, enhancing the sealing performance, and preventing grease leakage; second, during the process of the cover plate 3 being inserted into the mounting sleeve 2, it scrapes off the grease remaining on the inner wall of the mounting sleeve 2 and sends it into the interior of the mounting sleeve 2, automatically cleaning the opening and preventing residual grease from affecting the seal or causing pollution.

[0050] As a preferred embodiment of the above embodiment, the bottom edge of the cover 3 is provided with a rounded corner structure 13;

[0051] In this embodiment,

[0052] The bottom edge of the cover plate 3 is rounded to prevent sharp edges from scratching the inner wall of the mounting sleeve 2 or the operator's fingers when the cover plate 3 is fastened to or removed from the mounting sleeve 2. At the same time, it reduces the frictional resistance between the cover plate 3 and the mounting sleeve 2, ensuring that the cover plate 3 can be smoothly inserted or removed.

[0053] As a preferred embodiment of the above embodiment, the sealing protrusions 12 on the outer circumferential sidewall of the cover plate 3 are provided in a plurality of manner, and the plurality of sealing protrusions 12 are arranged in close proximity in the longitudinal direction;

[0054] In this embodiment,

[0055] Multiple longitudinally adjacent sealing protrusions 12: First, they form a "multi-layer seal" by having multiple sets of protrusions adhere to the inner wall of the mounting sleeve 2 in multiple layers, further improving the sealing effect; second, they enhance the cleaning effect by having multiple sets of protrusions scrape off the grease and frost on the inner wall of the mounting sleeve 2 layer by layer, making the cleaning more thorough and ensuring that the opening for removing and placing the mounting sleeve 2 is clean.

[0056] As a preferred embodiment of the above embodiments, the sealing convex ring 12 is configured as an arc-shaped convex ring;

[0057] In this embodiment,

[0058] Arc-shaped convex ring (sealing convex ring 12): First, the arc-shaped structure allows the convex ring to form a more closely fitting curved surface contact with the inner wall of the mounting sleeve 2, reducing the sealing gap and improving the sealing effect; second, it reduces the wear between the convex ring and the inner wall of the mounting sleeve 2 when the cover plate 3 is inserted, extending the service life of the component; third, the arc-shaped edge makes it easier to scrape off residual grease, ensuring the cleaning effect while avoiding scratching the inner wall of the mounting sleeve 2.

[0059] As a preferred embodiment of the above, the elastic component 10 is configured as a plurality of elastic plates. The elastic plates can undergo elastic deformation when longitudinally compressed. The plurality of elastic plates are all configured as outwardly convex arc panels. The plurality of elastic plates are arranged in a centrally symmetrical manner about the axis of the inner cover 4. The top ends of the plurality of elastic plates are all connected to the center part of the top inner wall of the inner cover 4. The bottom ends of the plurality of elastic plates are all connected to the top edge part of the rotating ring 9.

[0060] In this embodiment,

[0061] Elastic plate: As a specific form of elastic component 10, the outward convex arc panel structure makes it easy to be compressed and deformed when the outer cover 5 is pressed. After the inner cover 4 is locked, it can be stably reset and push the cover plate 3 to flip up and fit tightly against the mounting sleeve 2. The central symmetrical arrangement ensures that the elastic force is evenly transmitted to the rotating ring 9 and avoids the cover plate 3 from being deviated by force. The inner cover 4 and the rotating ring 9 are connected at both ends to ensure the effective transmission of elastic force and assist in sealing and smooth operation.

[0062] The working principle of this utility model is as follows:

[0063] When in use, loosen the inner cover 4 by unscrewing the outer cover 5. The inner cover 4 moves upward and causes the elastic component 10 to stretch and deform. The elastic component 10 drives the cover 3 to move upward synchronously through the rotating ring 9, the support shaft 7, and the support plate 6, so that the cover 3 is disengaged from the slot of the mounting sleeve 2. The cream can then be taken out from the opening of the mounting sleeve 2.

[0064] After use, hold the outer cover 5 and fasten the cover 3 onto the mounting sleeve 2. Then press the outer cover 5. The outer cover 5 will move the inner cover 4 downwards until it contacts and engages with the mounting sleeve 2, causing the compression elastic component 10 to deform. Rotate the outer cover 5. The outer cover 5 will move the inner cover 4 to engage with the mounting sleeve 2 through the thread and lock it in place. At this time, the elastic component 10 will reset and generate a downward elastic force, pushing the cover 3 to flip over and fit tightly against the mounting sleeve 2 opening, thus strengthening the seal.

[0065] During the process of the cover plate 3 being inserted into the mounting sleeve 2, the sealing protrusion 12 on its outer circumferential side wall simultaneously scrapes off the residual frost on the inner wall of the mounting sleeve 2 and sends the frost into the interior of the mounting sleeve 2, thus completing the cleaning of the take-out port.

[0066] Finally, ensure that the inner cover 4 is locked. Even if the inner cover 4 is not fully locked due to negligence, the elastic component 10 can still push the cover 3 to fasten on the mounting sleeve 2 with its elastic force. Moreover, the elastic component 10 pushes the inner cover 4 under its elastic force, which has a limiting effect and reduces the possibility of the inner cover 4 rotating freely if it is not fully tightened.

[0067] Throughout the process, the rotating ring 9 can rotate around the support shaft 7 to prevent the cover 3 from getting stuck when the inner cover 4 rotates with the outer cover 5; the reinforcing rib 11 improves the structural strength, the sealing convex ring 12 has both sealing and cleaning functions, and the elastic component 10 ensures that the cover 3 is tightly fastened, thus achieving the effects of convenient operation, leak-proof sealing and cleaning of the installation sleeve 2.

[0068] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pressure-resistant polymer cream bottle based on a three-piece snap fastener assembly, comprising a bottle body (1), a mounting sleeve (2) with external threads provided on the top of the bottle body (1), a cap (3) with a flanged structure fastened to the opening of the mounting sleeve (2), an inner cap (4) threadedly connected to the mounting sleeve (2), and an outer cap (5) securely fitted over the inner cap (4), characterized in that, Also includes: Support plate (6), the support plate (6) is installed at the top center of the cover plate (3), a support shaft (7) is coaxially installed at the top center of the support plate (6), and a limit plate (8) is coaxially installed at the top of the support shaft (7). Rotating ring (9), the rotating ring (9) is rotatably sleeved on the support shaft (7), the rotating ring (9) is located between the support plate (6) and the limiting plate (8), and the rotating ring (9) is in contact with the support plate (6) and the limiting plate (8) but not squeezed; An elastic component (10) is installed on the top inner wall of the inner cover (4), and the other end of the elastic component (10) is installed on the top of the rotating ring (9).

2. The pressure-resistant polymer cream bottle based on a three-piece strong buckle assembly as described in claim 1, characterized in that, The top of the cover plate (3) is provided with a number of reinforcing ribs (11), which are evenly distributed radially at the top of the cover plate (3), and the inner ends of the reinforcing ribs (11) are connected to the circumferential sidewall of the support plate (6).

3. The pressure-resistant polymer cream bottle based on a three-piece strong buckle assembly as described in claim 1, characterized in that, A sealing protrusion (12) is provided on the outer circumferential side wall of the cover plate (3).

4. The pressure-resistant polymer cream bottle based on a three-piece strong buckle assembly as described in claim 1, characterized in that, The bottom edge of the cover (3) is provided with a rounded corner structure (13).

5. The pressure-resistant polymer cream bottle based on a three-piece strong buckle assembly as described in claim 3, characterized in that, The sealing protrusions (12) on the outer circumferential sidewall of the cover plate (3) are provided in multiple ways, and the multiple sealing protrusions (12) are arranged in close proximity in the longitudinal direction.

6. The pressure-resistant polymer cream bottle based on a three-piece strong buckle assembly as described in claim 3, characterized in that, The sealing ring (12) is configured as an arc-shaped ring.

7. The pressure-resistant polymer cream bottle based on a three-piece strong buckle assembly as described in claim 1, characterized in that, The elastic component (10) is configured as a plurality of elastic plates. The elastic plates can undergo elastic deformation when longitudinally compressed. The plurality of elastic plates are all configured as convex arc panels. The plurality of elastic plates are arranged in a centrally symmetrical manner about the axis of the inner cover (4). The top of the plurality of elastic plates is connected to the center of the top inner wall of the inner cover (4). The bottom of the plurality of elastic plates is connected to the top edge of the rotating ring (9).

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