Cosmetic plastic packaging bottle with defined opening

Abstract

The present application provides a kind of with the cosmetic plastic packaging bottle of defined opening, including bottle body, with opening, for accommodating cosmetic;Bottle cap is connected with bottle body by thread, for closing bottle body;Locking mechanism is arranged between bottle cap and bottle body, for locking bottle cap after bottle cap and bottle body are connected by thread;Locking mechanism includes drive assembly, is arranged on bottle cap, for user manual operation to control locking or unlocking;First locking component is connected with drive assembly and moves with it;Second locking component is arranged in the inside of the opening of bottle body, cooperates with first locking component to realize locking;By the rotation operation of the drive assembly of locking mechanism, first locking component and second locking component are engaged in preset position to lock bottle cap or separate to unlock bottle cap, so as to realize the locking or unlocking of bottle cap;Significantly improve the safety, practicality and user experience of cosmetic plastic packaging bottle, reliable locking and convenient unlocking operation of bottle cap can be realized.

Description

Technical Field

[0001] This invention relates to the field of packaging container technology, specifically to a cosmetic plastic packaging bottle with a limited opening feature. Background Technology

[0002] Plastic cosmetic bottles, widely used in daily life, serve functions beyond simply storing and protecting cosmetics; they must also meet users' safety and convenience needs. Traditional cosmetic plastic bottles often use threaded caps and bodies, which, while providing a good seal, can be prone to accidental opening during use. For example, during transportation, storage, or child mishandling, the cap may loosen or detach, leading to leakage, unnecessary waste, or even safety hazards for the user. To address these issues, some packaging bottle designs with locking mechanisms have emerged on the market. These designs typically use additional locking components or mechanical mechanisms to prevent accidental opening of the cap.

[0003] However, these locking designs are usually quite complex and inconvenient to operate, and may even require special tools to lock or unlock, resulting in a poor user experience. Therefore, it is necessary to study and improve the structure of such packaging bottles with locking functions. To solve the above problems, the concept of this invention is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a cosmetic plastic packaging bottle with a limited opening mechanism. By setting a locking mechanism between the bottle cap and the bottle body, the bottle cap can be reliably locked and easily unlocked, thereby effectively avoiding accidental opening. It also features a simple structure and convenient use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cosmetic plastic packaging bottle with a limited opening, comprising: a bottle body having an opening for containing cosmetics; a bottle cap connected to the bottle body by threads for closing the bottle body; and a locking mechanism disposed between the bottle cap and the bottle body for locking the bottle cap after the bottle cap is threadedly connected to the bottle body; the locking mechanism comprising: a driving assembly disposed on the bottle cap for manual operation by a user to control locking or unlocking; a first locking component connected to the driving assembly and moving with the operation of the driving assembly; and a second locking component disposed inside the opening of the bottle body for cooperating with the first locking component to form a locking or unlocking mechanism; by rotating the driving assembly of the locking mechanism, the first locking component and the second locking component are engaged at a preset position to lock the bottle cap, or the first locking component and the second locking component are separated to unlock the bottle cap.

[0006] In a further improvement of the present invention, the driving component includes: a rotating shaft, vertically disposed on the bottle cap and capable of rotating about its vertical axis, the rotating shaft being rotatably connected to the bottle cap; a pull ring, installed on the top of the rotating shaft, for the user to manually rotate the pull ring to drive the rotating shaft to rotate about the vertical axis; and a connecting part, located at the bottom of the rotating shaft, for transmitting the rotational action of the rotating shaft to the first locking component, thereby realizing the engagement locking or disengagement unlocking of the first locking component and the second locking component.

[0007] In a further improvement of the present invention, the top surface of the bottle cap is provided with a receiving groove for accommodating the pull ring of the drive assembly; the pull ring can rotate about the horizontal axis of the rotation shaft and is accommodated in the receiving groove after rotation, so as to prevent children from accidentally unlocking the bottle cap.

[0008] In a further improvement of the present invention, the pull ring is provided with an identification structure to distinguish between the locked and unlocked states; the identification structure includes visual or tactile markings on the front and back of the pull ring, indicating that the bottle cap is in the locked state when the front of the pull ring is facing up and placed in the receiving groove; and indicating that the bottle cap is in the unlocked state when the back of the pull ring is facing up and placed in the receiving groove.

[0009] In a further improvement of the present invention, a pull bar is provided on the inner side of the pull ring, the pull bar being used to assist the user in applying force to pull the pull ring, causing the pull ring to rotate and rise from the receiving groove.

[0010] In a further improvement of the present invention, a cover plate is rotatably mounted on the top surface of the bottle cap, the cover plate covering the opening of the receiving groove for covering the receiving groove; a limiting groove is formed on the bottom surface of the cover plate, and a limiting block is provided on the top surface of the bottle cap, the limiting block cooperating with the limiting groove to limit the rotation range of the cover plate.

[0011] A further improvement of the present invention is that the cosmetic plastic packaging bottle with a limited opening also includes an automatic alignment mechanism for automatically aligning the first locking component and the second locking component to a preset position during rotation; the automatic alignment mechanism includes: a groove provided on the inner side wall of the bottle cap near the opening, and a guide post provided on the outer side wall of the bottle body near the opening, wherein the groove cooperates with the guide post by rotation to ensure that the first locking component and the second locking component are aligned.

[0012] A further improvement of the present invention is that the inlet portion of the groove is provided with a guide surface at a certain inclination angle. The guide surface is used to guide the guide post to slide into the main body of the groove, and the upper part of the guide surface is a hollow structure so that the guide post can smoothly enter the main body of the groove. The top of the guide post corresponds to the inlet position of the bottle cap groove. When the bottle cap is rotated clockwise for assembly, the groove slides into the corresponding guide post by rotation. Through the cooperation of the groove and the guide post, the bottle cap and the bottle body are automatically aligned and fixed.

[0013] A further improvement of the present invention is that the number of grooves is several and they are evenly distributed around the inner sidewall of the bottle cap, and the main body of the groove is arc-shaped; the number of guide posts corresponds to the number of grooves on the inner sidewall of the bottle cap and they are matched in circumferential position, and the top of each guide post is hemispherical so as to smoothly enter the entrance of the groove.

[0014] In a further improvement of the present invention, the first locking component is a toothed protrusion, and the second locking component is a toothed groove. The first locking component engages with the second locking component by rotation to achieve locking.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] 1. By setting up a cooperating locking structure between the first and second locking components, after the bottle cap is connected by rotating it through the threads, the user can lock it using the drive assembly, firmly fixing the bottle cap to the bottle body and preventing it from opening due to accidental contact or rotation. This design is particularly suitable for use in home environments to avoid safety hazards caused by children accidentally opening the bottle.

[0017] 2. The locking mechanism's drive component is located on the bottle cap, allowing users to easily lock or unlock the bottle by rotating the drive component without requiring additional tools, conforming to everyday usage habits. Furthermore, the optimized structural design enhances the ease of operation, making it easy for even users with limited strength to complete the task.

[0018] In summary, this significantly improves the safety, practicality, and user experience of plastic packaging bottles for cosmetics, providing consumers with a safer and more convenient way to use them. It enables reliable locking and easy unlocking of the bottle cap, effectively preventing accidental opening, while also featuring a simple structure and ease of use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is an exploded structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the bottle cap of the present invention;

[0022] Figure 4 This is another exploded structural diagram of the present invention;

[0023] Figure 5 This is a further exploded structural diagram of the present invention;

[0024] Figure 6 This is a cross-sectional structural diagram of the bottle cap and bottle body in a locked state according to the present invention;

[0025] Figure 7 For the present invention Figure 6 A magnified structural diagram of part A;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the cover plate of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure in use of the present invention;

[0028] Figure 10 This is a cross-sectional structural diagram of the bottle cap and bottle body in an unlocked state according to the present invention.

[0029] In the diagram: 1. Bottle body; 2. Bottle cap; 21. Limiting block; 3. Locking mechanism; 31. Drive assembly; 311. Rotating shaft; 3111. Connecting part; 312. Pull ring; 313. Pull bar; 32. First locking component; 33. Second locking component; 4. Receiving groove; 51. Guide post; 52. Groove; 6. Cover plate; 61. Limiting groove. Detailed Implementation

[0030] The present invention will now be described in more detail with reference to specific embodiments. However, the implementation of the present invention is not limited thereto. The embodiments are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. For process parameters or conditions not specifically specified, conventional techniques can be referred to.

[0031] Please see Figure 1 and Figure 2 The technical solution adopted in this specific embodiment is as follows: a cosmetic plastic packaging bottle with a limited opening, comprising: a bottle body 1 having an opening for containing cosmetics, which can be semi-solid materials such as face cream, hand cream, etc.; and a bottle cap 2 connected to the bottle body 1 by threads for sealing the bottle body 1. Specifically, in this embodiment, the bottle body 1 is made of durable plastic material and is cylindrical in shape. Threads are provided on the outer wall of the bottle body 1 for connection with the internal threads of the bottle cap 2, ensuring a tight seal between the bottle cap 2 and the bottle body 1 and preventing cosmetic leakage.

[0032] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 The locking mechanism 3 is disposed between the bottle cap 2 and the bottle body 1, and is used to lock the bottle cap 2 after the bottle cap 2 is threadedly connected to the bottle body 1; the locking mechanism 3 includes: a drive assembly 31, which is disposed on the bottle cap 2, and is used by the user to manually operate to control locking or unlocking.

[0033] The first locking component 32 is connected to the driving component 31 and moves with the operation of the driving component 31; the second locking component 33 is disposed inside the opening of the bottle body 1 and is used to cooperate with the first locking component 32 to form a locking or unlocking mechanism; by rotating the driving component 31 of the locking mechanism 3, the first locking component 32 and the second locking component 33 are engaged at a preset position to lock the bottle cap 2, or the first locking component 32 and the second locking component 33 are separated to unlock the bottle cap 2, thereby realizing the locking or unlocking of the bottle cap 2.

[0034] In this embodiment, the above design ensures that the cap 2 can be securely locked after the threaded connection by setting a locking mechanism 3 between the cap 2 and the bottle body 1. The user can manually operate the drive component 31 to lock or unlock, which greatly reduces the phenomenon of the cap 2 opening due to accidental touch or external force, and significantly improves the sealing, safety and reliability of cosmetic packaging.

[0035] Please see Figure 3 , Figure 4 and 5 The driving component 31 includes: a rotating shaft 311, vertically mounted on the bottle cap 2 and capable of rotating around its vertical axis, the rotating shaft 311 being rotatably connected to the bottle cap 2; a pull ring 312, mounted on the top of the rotating shaft 311, for the user to manually rotate the pull ring 312 to drive the rotating shaft 311 to rotate around its vertical axis; and a connecting part 3111, located at the bottom of the rotating shaft 311, for transmitting the rotational motion of the rotating shaft 311 to the first locking component 32, thereby achieving engagement and locking or disengagement and unlocking of the first locking component 32 and the second locking component 33. Specifically, the first locking component 32 is fixed to the connecting part 3111, which can be an integral structure with the rotating shaft 311, but is not limited to this and can also be a separate structure. In this embodiment, the design of the driving component 31 allows the user to complete the locking or unlocking process by simply rotating the pull ring 312 without additional tools. This design is simple in structure, easy to operate, and conforms to the user's daily usage habits, effectively improving ease of use. The locking operation is transmitted through the vertical rotation of the rotating shaft 311, ensuring the accuracy and stability of the locking mechanism 3's action.

[0036] Specifically, the rotating shaft 311 passes through the bottle cap 2 and is fixed within the bottle cap 2 via a rotatable connection. It can be positioned at the center of the bottle cap 2, but is not limited to this; it can also be positioned offset from the center. The rotating shaft 311 can rotate around a vertical axis to transmit locking or unlocking actions. The pull ring 312 is fixed to the top of the rotating shaft 311 and features a ring design for easy user operation. When locking or unlocking is required, the user can grasp the pull ring 312 with their fingers and rotate it clockwise or counterclockwise. The pull ring 312 is ergonomically designed with a non-slip texture for easy gripping. Furthermore, when not in use, the pull ring 312 can be folded and stored in the receiving groove 4 at the top of the bottle cap 2, which is both aesthetically pleasing and prevents accidental operation by children.

[0037] In this specific embodiment, the locking operation is as follows: The user rotates the bottle cap 2 along the thread and tightens it to the bottle body 1, ensuring that the bottle cap 2 and the bottle body 1 are completely fitted together. Then, the user grasps the pull ring 312 and rotates the pull ring 312 counterclockwise. The rotation of the pull ring 312 drives the rotating shaft 311 to rotate synchronously. The rotating shaft 311 drives the connecting part 3111 and the first locking component 32 to rotate, so that the first locking component 32 engages with the second locking component 33. When the two are fully engaged, the locking operation is completed, thereby preventing the bottle cap 2 from being accidentally opened. The unlocking operation is as follows: The user grasps the pull ring 312 and rotates it clockwise. The rotation of the pull ring 312 drives the rotating shaft 311 to rotate clockwise synchronously. The rotating shaft 311 drives the first locking component 32 to rotate. When the first locking component 32 and the second locking component 33 are completely disengaged, the locking state is released, and the bottle cap 2 is in the unlocked state. After unlocking, the user can unscrew the bottle cap 2 by rotating it counterclockwise to easily open the bottle body 1 and take out the cosmetics.

[0038] Please see Figure 4 , Figure 5 , Figure 6 , Figure 9 and Figure 10 The top surface of the bottle cap 2 has a receiving groove 4 for accommodating the pull ring 312 of the drive assembly 31. The pull ring 312 can rotate around the horizontal axis of the rotating shaft 311 and is housed in the receiving groove 4 after rotation, preventing accidental unlocking of the bottle cap 2 by children. Additionally, the top of the rotating shaft 311 can be housed in the receiving groove 4. In this embodiment, by providing the receiving groove 4 on the top surface of the bottle cap 2, the pull ring 312 is rotated and stored within the receiving groove 4, thus avoiding the problem of accidental unlocking that might occur if the pull ring 312 is exposed, further improving the safety against accidental unlocking. This design also makes the overall appearance of the bottle cap 2 more integrated, balancing aesthetics and functionality.

[0039] Specifically, the shape of the accommodating groove 4 is adapted to the shape of the pull ring 312, which can be annular and has an appropriate depth to completely accommodate the pull ring 312, thereby protecting the pull ring 312 when the bottle cap 2 is not in use. The pull ring 312 is connected to the bottle cap 2 through a rotating shaft 311 and can rotate around the horizontal axis of the rotating shaft 311. When the user needs to perform a locking or unlocking operation, the pull ring 312 can be rotated and lifted out of the accommodating groove 4, and the pull ring 312 can be grasped to drive the rotating shaft 311 to perform corresponding operations. After the operation is completed, the user can rotate the pull ring 312 back into the accommodating groove 4 again to make it flush with the top surface of the bottle cap 2.

[0040] Please refer to Figure 4 、 Figure 6 、 Figure 9 and Figure 10 In the locked state, the pull ring 312 is completely hidden in the accommodating groove 4, and the design of the accommodating groove 4 is such that the pull ring 312 will not easily detach or rotate without external force, further reducing the possibility of accidental contact by children. At the same time, the edge of the accommodating groove 4 can be designed to be slightly convex to increase protection. For example, when the user uses the packaging bottle, the pull ring 312 is lifted out of the accommodating groove 4, and the pull ring 312 is rotated counterclockwise to drive the locking mechanism 3 to complete the locking operation. After locking, the user rotates the pull ring 312 back into the accommodating groove 4, and the pull ring 312 fits flush with the accommodating groove 4 to play a protective role. When unlocking is required, the user can operate the pull ring 312 in the reverse direction to smoothly open the bottle cap 2. This design not only ensures the convenience of operation but also improves the safety and practicality of the product.

[0041] The pull ring 312 is provided with an identification structure for distinguishing between the locked state and the unlocked state; the identification structure includes visual or tactile marks provided on the front and back of the pull ring 312. When the front of the pull ring 312 faces up and is placed in the accommodating groove 4, it indicates that the bottle cap 2 is in the locked state; when the back of the pull ring 312 faces up and is placed in the accommodating groove 4, it indicates that the bottle cap 2 is in the unlocked state.

[0042] The identification structure includes: a first identification is provided on the front of the pull ring 312, and a second identification is provided on the back of the pull ring 312; further, the first identification can be a red area or a raised mark structure for indicating the locked state; the second identification can be a green area or a sunken mark structure for indicating the unlocked state. However, it is obvious that it is not limited to this. In addition to using the above identifications, other identification structures are also applicable to this embodiment. For example, the first identification is in the shape of "closed" and the second identification is in the shape of "open", using different shaped fonts to distinguish.

[0043] [[ID=二十]]Please refer to [[ID=二十一]] Figure 4 [[ID=二十二]]、[[ID=二十三]] Figure 5 [[ID=二十四]]and [[ID=二十五]] Figure 9A pull bar 313 is provided on the inner side of the pull ring 312. The pull bar 313 is used to assist the user in applying force to pull the pull ring 312, so that the pull ring 312 rotates and rises from the receiving groove 4. By raising the pull ring 312, the user can easily grasp and rotate the pull ring 312 to drive the rotating shaft 311 to rotate, thereby realizing the locking or unlocking operation of the bottle cap 2.

[0044] In this embodiment, the pull bar 313 is disposed inside the pull ring 312, that is, both ends of the pull bar 313 are fixed to the two ends of the inner sidewall of the pull ring 312, so that the user can actuate the pull bar 313 with their fingers; the pull bar 313 can be made of flexible plastic material and is strip-shaped. The position and shape of the pull bar 313 are designed to ensure that the user can easily grasp and pull it when using it. By applying appropriate force, the pull bar 313 will help the user easily lift the pull ring 312 from the receiving groove 4. When it is necessary to lift the pull ring 312, the user grasps the pull bar 313 with their fingers and pulls it. The structure of the pull bar 313 will effectively distribute the force, so that the pull ring 312 slowly rotates and rises from the receiving groove 4. When the pull ring 312 is lifted, it will completely detach from the receiving groove 4, making it convenient for the user to operate further. After the pull ring 312 is lifted, the user can easily grasp the outer edge of the pull ring 312 and drive the rotating shaft 311 by rotating the pull ring 312. The pull bar 313 design allows users to easily apply force to lift the pull ring 312, avoiding the inconvenience caused by the difficulty in operating the pull ring 312. This effectively reduces the difficulty of operation and is especially suitable for users with less strength, such as women or the elderly, thus improving user-friendliness and operating experience.

[0045] Please see Figure 4 , Figure 5 , Figure 8 and Figure 9 A cover plate 6 is rotatably mounted on the top surface of the bottle cap 2, covering the opening of the receiving groove 4 to conceal it. A limiting groove 61 is formed on the bottom surface of the cover plate 6, and a limiting block 21 is provided on the top surface of the bottle cap 2. The limiting block 21 cooperates with the limiting groove 61 to limit the rotation range of the cover plate 6. The cover plate 6 is mounted on the top surface of the bottle cap 2 via a rotatable shaft, and is parallel to the bottle cap 2, arranged horizontally. When the cover plate 6 is rotated, it rotates horizontally relative to the bottle cap 2. However, the design of the cover plate 6 plays a crucial protective role in preventing accidental activation or unlocking of the pull ring 312. By covering the receiving groove 4, the design of the cover plate 6 ensures that the locking and unlocking process of the bottle cap 2 is safer and more reliable, further enhancing the anti-accidental opening effect.

[0046] The main function of the cap 6 is to cover the opening of the receiving groove 4, preventing the pull ring 312 or other drive components 31 from being accidentally touched, thus unlocking the cap 2. The design of the cap 6 ensures that the receiving groove 4 is completely covered during normal use, avoiding unauthorized contact. Specifically, the limiting block 21 is set on the top surface of the cap 2 and precisely mates with the limiting groove 61 to form a fit. In this way, when the cap 6 rotates, it encounters the obstruction of the limiting block 21 and stops rotating, ensuring that the cap 6 is securely covering the opening of the receiving groove 4. The design of the limiting block 21 and the limiting groove 61 makes it difficult for the cap 6 to lose its original position due to slight external impacts or accidental contact, thereby preventing the receiving groove 4 from being accidentally exposed. When the cap 2 is in the locked state, the cap 6 can securely cover the opening of the receiving groove 4. At this time, the fit between the cap 6 and the limiting block 21 and the limiting groove 61 ensures that the cap 6 is not easily rotated due to external forces, playing a stabilizing role. However, the covering function of the cap 6 greatly enhances the anti-accidental opening performance of the packaging bottle, especially when children or users unfamiliar with the product are operating it, the cap 6 provides a physical barrier. When the user needs to operate the pull ring 312, they must first manually rotate the cap 6. The rotation of the cap 6 will expose the receiving groove 4, allowing the user to directly contact the pull ring 312 for locking or unlocking. It also effectively protects the pull ring 312 from external interference and prevents dust and dirt from entering the receiving groove 4, further enhancing the anti-accidental touch function and improving the overall aesthetics of the bottle cap 2. The limiting groove 61 of the cap 6 cooperates with the limiting block 21 of the bottle cap 2, ensuring the stability and precise positioning of the cap 6 when covering the receiving groove 4, thus improving the overall safety of the product.

[0047] Please see Figure 2 and Figure 3 The cosmetic plastic packaging bottle with a limited opening also includes an automatic alignment mechanism for automatically aligning the first locking component 32 and the second locking component 33 to a preset position during rotation. During rotation, the guide post 51 and the groove 52 convert the rotational force into an alignment action through mechanical contact, ultimately bringing the two locking components to the preset working position.

[0048] The preferred preset working position is a progressive engagement design, where the first locking component 32 and the second locking component 33 are progressively engaged. When the bottle cap 2 is nearly fully screwed in, the first locking component 32 only partially engages with the second locking component 33. At this point, the locking effect is not yet complete, but the bottle cap 2 has a certain degree of rotational damping, allowing the user to perceive that it is approaching the locked state. Continuing to rotate to the full angle, the first locking component 32 fully engages with the second locking component 33, and the lock becomes effective. The first locking component 32 can be a toothed protrusion, and the second locking component 33 can be a toothed groove. Alternatively, the preset working position can also be the locked position. After the bottle cap 2 is fully rotated to the specified angle, the guide post 51 slides into the main body of the groove 52, and the first locking component 32 and the second locking component 33 fully engage, firmly locking the bottle cap 2 to the bottle body 1, preventing accidental opening. It should be noted that this preset position can be determined according to specific design requirements.

[0049] Please see Figure 2 , Figure 3 , Figure 6 and Figure 10 The automatic alignment mechanism includes: a groove 52 provided on the inner side wall of the bottle cap 2 near the opening; and a guide post 51 provided on the outer side wall of the bottle body 1 near the opening. The groove 52 rotates to cooperate with the guide post 51 to ensure that the first locking component 32 and the second locking component 33 are aligned.

[0050] Specifically, the function of the guide post 51 is to guide the bottle cap 2 to align and enter the groove 52 of the bottle cap 2 during rotation, ensuring that the first locking component 32 and the second locking component 33 of the bottle body 1 can accurately align. During the automatic alignment operation, alignment occurs during rotation: when the user rotates the bottle cap 2, the guide post 51 enters the groove 52 of the bottle cap 2 through its cooperation with the groove 52. At this time, the guide post 51 is guided by the guide surface of the groove 52, ensuring that the guide post 51 smoothly slides into the groove body. Due to the precision design of the guide post 51 and the groove 52, the first locking component 32 and the second locking component 33 will automatically align to the preset position, thereby ensuring that the bottle cap 2 and the bottle body 1 can be smoothly locked or unlocked. Alignment stability: due to the cooperation between the guide post 51 and the groove 52, the bottle cap 2 and the bottle body 1 always maintain the correct relative position during rotation, ensuring that the first locking component 32 and the second locking component 33 align correctly, avoiding locking failure or incomplete unlocking due to misalignment.

[0051] When the user rotates the bottle cap 2 along the thread direction and tightens it onto the bottle body 1, the guide post 51 automatically enters the groove 52 of the bottle cap 2, ensuring that the locking components of the bottle cap 2 and the bottle body 1 are aligned. Due to the precise alignment of the guide post 51 and the groove 52, the first locking component 32 and the second locking component 33 automatically align during rotation. Specifically, this ensures that the positions of the first locking component 32 and the second locking component 33 are precisely matched, thereby guaranteeing that they can smoothly engage or disengage.

[0052] However, the automatic alignment mechanism effectively prevents the locking components from becoming misaligned due to asymmetrical rotation of the bottle cap 2 by the user. Especially during rapid user operation, the automatic alignment mechanism can quickly and accurately ensure that the positions of the first locking component 32 and the second locking component 33 are precisely matched. Moreover, the automatic alignment mechanism simplifies the user's operation steps, making the locking and unlocking of the bottle cap 2 smoother, eliminating the need for the user to adjust the position of the bottle cap 2, and making the operation more convenient.

[0053] Specifically, the grooves 52 are evenly distributed on the inner wall of the bottle cap 2 opening, ensuring that the bottle cap 2 can smoothly align and maintain balance during rotation. The symmetrical distribution design of the grooves 52 and guide posts 51 facilitates multi-point alignment, ensuring the stability of the bottle cap 2 and bottle body 1 after assembly. The entrance portion of the groove 52 has a guide surface with a certain inclined angle, which guides the guide post 51 to slide into the main body of the groove 52. The upper part of the guide surface has a hollow structure so that the guide post 51 can smoothly enter the groove body. The combination of the inclined guide surface and the hollow structure makes the guidance more precise and further improves the assembly efficiency. Specifically, the guide surface can be an inclined surface with an angle of 15°~30°. The groove 52 includes two parts: the guide surface and the groove body. The guide surface is the guiding part of the groove 52, responsible for guiding the guide post 51 into the groove body. The groove body is the main functional part of the groove 52, and its function is to accommodate the guide post 51. The top of the guide post 51 corresponds to the entrance position of the groove 52 of the bottle cap 2. When the bottle cap 2 is rotated clockwise for assembly, the groove 52 slides into the corresponding guide post 51 by rotation. Through the cooperation between the groove 52 and the guide post 51, the bottle cap 2 and the bottle body 1 are automatically aligned and fixed.

[0054] The bottle cap 2 has several grooves 52, evenly distributed around its inner wall. Each groove 52 has an angled guide surface at its entrance to guide the guide post 51 into the main body of the groove. The main body of the groove 52 is arc-shaped to fit snugly against the guide post 51. The guide post 51 is vertically positioned on the outer wall of the bottle body 1 near the opening. The number of guide posts 51 corresponds to the number of grooves 52 on the inner wall of the bottle cap 2, and they are matched circumferentially. This means that each guide post 51 can accurately align with and enter its corresponding groove 52. The top of each guide post 51 is hemispherical to facilitate smooth entry into the groove 52's entrance. Furthermore, the groove 52 can be V-shaped, U-shaped, or straight, depending on the design of the guide post 51 and the required positioning accuracy between the bottle cap 2 and the bottle body 1. The specific shape can be determined according to requirements.

[0055] It should be noted that the specific arrangement of the grooves 52 can be designed as 3 to 4 grooves 52 to achieve multi-point positioning and stability; the shape of the grooves 52: the entrance part of the groove 52 is designed as a downward sloping guide surface, which gradually recesses from the inner wall of the bottle cap 2 to the bottom of the groove 52; the depth of the groove 52 is usually 1 to 2 millimeters, which is enough to allow the bottom end of the guide post 51 to be inserted without loosening.

[0056] Please see Figure 2 , Figure 3 , Figure 6 and Figure 10 In this embodiment, firstly, the bottle cap 2 is installed. The user aligns the bottle cap 2 with the opening area at the top of the bottle body 1 and gently presses the bottle cap 2 down along the outer wall of the bottle body 1. At this time, the groove 52 on the inner wall of the bottle cap 2 is initially aligned with the guide post 51 on the outer wall of the bottle body 1. By applying a slight rotational force, the bottle cap 2 rotates clockwise. As the rotation continues, the entrance portion of the groove 52 on the inner wall of the bottle cap 2 contacts the top of the guide post 51. The inclined guide surface guides the guide post 51 to gradually slide into the main body of the groove, completing the precise fit between the guide post 51 and the groove 52. When the guide post 51 is fully slid into the main body of the groove, the bottle cap 2 and the bottle body 1 are aligned, and the first locking component 32 and the second locking component 33 are automatically aligned, preparing for subsequent locking operations. With the assistance of the automatic alignment mechanism, the user continues to rotate the bottle cap 2, causing the first locking component 32 and the second locking component 33 to engage through rotation, thereby locking the bottle cap 2 and the bottle body 1.

[0057] In this embodiment, the automatic alignment mechanism, through the design of the groove 52 and the guide post 51, ensures efficient alignment of the bottle cap 2 and the bottle body 1 during assembly, reducing the hassle of manual alignment and improving ease of use and operational efficiency. Furthermore, the inclined guide surface and the hemispherical top structure of the guide post 51 enhance the smoothness of the alignment process, effectively preventing jamming during assembly. Moreover, the strong and stable connection between the groove 52 and the guide post 51 makes locking and unlocking operations more reliable, further enhancing the safety of the anti-accidental opening function.

[0058] It is important to understand that the rotational guiding mechanism works as follows: when the bottle cap 2 and the bottle body 1 are connected by a threaded rotation, the vertical pressure generated by the thread during rotation pushes the guide post 51 on the bottle body 1 to contact the groove 52 on the inner side of the bottle cap 2, and gradually slides along the guide surface of the groove 52 to the main body of the groove.

[0059] It should be noted that the groove 52 is designed on the inner wall of the bottle cap 2 near the bottle cap opening. This groove 52 can be designed to penetrate the edge of the bottle cap opening, allowing the guide post 51 to quickly enter the guiding area of ​​the groove 52 during rotation, thus facilitating automatic alignment between the bottle cap 2 and the bottle body 1. Alternatively, the groove 52 can be designed to be close to the edge of the bottle cap opening, but not directly penetrating it; that is, the edge of the bottle cap opening maintains its complete annular structure. The position of the groove 52 is typically slightly lower than the edge of the bottle cap opening, for example, 2-4 mm lower, to ensure that the groove 52 does not compromise the sealing and structural integrity of the bottle cap opening. The specific design method can be determined according to requirements.

[0060] Please see Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 10 The first locking component 32 is a toothed protrusion, and the second locking component 33 is a toothed groove. The first locking component 32 engages with the second locking component 33 through rotation to achieve locking. The toothed protrusion is designed as a triangular protrusion with smooth edges and a moderate angle to ensure stable engagement with the toothed groove inside the bottle body 1. Specifically, the toothed protrusion can be 1.5 mm high and 2 mm wide; the toothed groove can be 1.5 mm deep and 2.5 mm wide. The engagement of the first locking component 32 and the second locking component 33 using a toothed protrusion and toothed groove not only ensures high locking reliability but also simplifies the engagement structure, making it easy to manufacture and maintain. This design also provides excellent wear resistance, significantly extending product lifespan.

[0061] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Detachable installation can take many forms, such as through a combination of plug-in and snap-fit ​​connections, or through bolted connections, etc.

[0062] The foregoing, in conjunction with embodiments and accompanying drawings, has clearly and completely described the concept, specific structure, and resulting technical effects of the present invention, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the possibility of forming a better connection structure by adding or reducing connecting accessories, depending on the specific implementation.

[0063] The above embodiments, which describe the specific features of the present invention, are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description of the invention shall fall within the scope of protection of the present invention.

Claims

1. A cosmetic plastic packaging bottle with a limited opening feature, characterized in that, include: The bottle has an opening for holding cosmetics; A bottle cap, connected to the bottle body by threads, is used to seal the bottle body; A locking mechanism is provided between the bottle cap and the bottle body for locking the bottle cap after the bottle cap is threadedly connected to the bottle body; The locking mechanism includes: A drive component, located on the bottle cap, is for manual operation by the user to control locking or unlocking; The first locking component is connected to the drive assembly and moves with the operation of the drive assembly; The second locking component is disposed inside the opening of the bottle body and is used to cooperate with the first locking component to form a locking or unlocking mechanism. The driving component includes: A rotating shaft is vertically mounted on the bottle cap and can rotate around its vertical axis; the rotating shaft is rotatably connected to the bottle cap. A pull ring, mounted on the top of the rotating shaft, is used by the user to manually rotate the pull ring to drive the rotating shaft to rotate about the vertical axis; The connecting part, located at the bottom of the rotating shaft, is used to transmit the rotational motion of the rotating shaft to the first locking component, thereby realizing the engagement and locking or disengagement and unlocking of the first locking component and the second locking component; The first locking component and the second locking component are engaged at a preset position to lock the bottle cap by rotating the drive component of the locking mechanism, or the first locking component and the second locking component are separated to unlock the bottle cap.

2. A cosmetic plastic packaging bottle with a limited opening feature according to claim 1, characterized in that, The top surface of the bottle cap is provided with a receiving groove for accommodating the pull ring of the drive assembly; The pull ring can rotate about the horizontal axis of the rotation shaft and is housed in the receiving groove after rotation to prevent children from accidentally unlocking the bottle cap.

3. A cosmetic plastic packaging bottle with a limited opening feature according to claim 2, characterized in that, The pull ring is equipped with an identification structure to distinguish between the locked and unlocked states. The identification structure includes visual or tactile markings on the front and back of the pull ring. When the front of the pull ring is facing up and placed in the receiving groove, it indicates that the bottle cap is in the locked state. When the back of the pull ring is facing up and placed in the receiving groove, it indicates that the bottle cap is in the unlocked state.

4. A cosmetic plastic packaging bottle with a limited opening feature according to claim 2, characterized in that, A pull bar is provided on the inner side of the pull ring. The pull bar is used to assist the user in applying force to pull the pull ring, so that the pull ring rotates and rises from the receiving groove.

5. A cosmetic plastic packaging bottle with a limited opening feature according to claim 2, characterized in that, The top surface of the bottle cap is rotatably fitted with a cover plate, which covers the opening of the receiving groove and is used to cover the receiving groove. The bottom surface of the cover is provided with a limiting groove, and the top surface of the bottle cap is provided with a limiting block. The limiting block cooperates with the limiting groove to limit the rotation range of the cover.

6. A cosmetic plastic packaging bottle with a limited opening feature according to claim 1, characterized in that, The cosmetic plastic packaging bottle with limited opening also includes an automatic alignment mechanism for automatically aligning the first locking component and the second locking component to a preset position during rotation. The automatic alignment mechanism includes: a groove on the inner sidewall of the bottle cap near the opening, and a guide post on the outer sidewall of the bottle body near the opening. The groove rotates to engage with the guide post to ensure that the first locking component and the second locking component are aligned.

7. A cosmetic plastic packaging bottle with a limited opening feature according to claim 6, characterized in that, The inlet portion of the groove is provided with a guide surface at a certain angle. The guide surface is used to guide the guide post to slide into the main body of the groove, and the upper part of the guide surface is a hollow structure so that the guide post can smoothly enter the main body of the groove. The top of the guide post corresponds to the inlet position of the bottle cap groove. When the bottle cap is rotated clockwise for assembly, the groove slides into the corresponding guide post through rotation. The cooperation between the groove and the guide post automatically aligns and fixes the bottle cap with the bottle body.

8. A cosmetic plastic packaging bottle with a limited opening feature according to any one of claims 6 or 7, characterized in that, The number of grooves is several, and they are evenly distributed around the inner sidewall of the bottle cap, and the main part of the groove is arc-shaped. The number of guide posts corresponds to the number of grooves on the inner wall of the bottle cap and they are matched in circumferential position. The top of each guide post is hemispherical to facilitate smooth entry into the groove entrance.

9. A cosmetic plastic packaging bottle with a limited opening feature according to any one of claims 1-7, characterized in that, The first locking component is a toothed protrusion, and the second locking component is a toothed groove. The first locking component engages with the second locking component by rotating to achieve locking.

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