Cosmetic plastic packaging bottle with opening limiting function

Abstract

The invention provides a cosmetic plastic packaging bottle with an opening limiting function, which comprises a bottle body with an opening for accommodating cosmetics; the bottle cap is connected with the bottle body through threads and used for sealing the bottle body; the locking mechanism is arranged between the bottle cap and the bottle body and is used for locking the bottle cap after the bottle cap is in threaded connection with the bottle body; the locking mechanism comprises a driving assembly which is arranged on the bottle cap and used for manual operation of a user to control locking or unlocking. The first locking part is connected with the driving assembly and moves along with the driving assembly; the second locking component is arranged on the inner side of the opening of the bottle body and is matched with the first locking component to realize locking; through rotation operation of the driving assembly of the locking mechanism, the first locking component and the second locking component are meshed at the preset position to lock the bottle cap or separated to unlock the bottle cap, and therefore locking or unlocking of the bottle cap is achieved; the safety, practicability and user experience of the plastic packaging bottle for cosmetics are remarkably improved, and reliable locking and convenient unlocking operation of the bottle cap can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging containers, in particular to a cosmetic plastic packaging bottle with limited opening. Background Art

[0002] As a widely used container in daily life, the function of plastic cosmetic bottles is not limited to storing and protecting cosmetics, but also needs to meet the safety and convenience needs of users. Traditional plastic cosmetic bottles mostly use a threaded cap and bottle body design. Although they can perform the sealing function well, they may face the problem of accidental opening during use. For example, during transportation, storage or misoperation by children, the bottle cap may accidentally loosen or fall off, causing cosmetics to leak or unnecessary waste, and may even pose a safety hazard to the user. To solve the above problems, some packaging bottle designs with locking functions are currently on the market. These designs usually use additional locking components or mechanical mechanisms to achieve the anti-accidental opening function of the bottle cap.

[0003] However, these locking designs are usually complicated and inconvenient to operate, and even require special tools to achieve locking or unlocking operations, resulting in a poor user experience. Therefore, it is necessary to study and improve the structure of this type of packaging bottle with a locking function. In order to solve the above problems, the concept of the present invention is proposed. Summary of the invention

[0004] The object of the present invention is to provide a cosmetic plastic packaging bottle with limited opening. By arranging a locking mechanism between the bottle cap and the bottle body, the bottle cap can be reliably locked and conveniently unlocked, thereby effectively avoiding the problem of accidental opening. At the same time, it has the characteristics of simple structure and easy use.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cosmetic plastic packaging bottle with limited opening, comprising: a bottle body, having an opening for accommodating cosmetics; a bottle cap, connected to the bottle body by a thread, for closing the bottle body; a locking mechanism, arranged 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 comprises: a driving assembly, arranged 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; a second locking component, arranged on the inner side of the opening of the bottle body, for cooperating with the first locking component to form locking or unlocking; through the rotation operation of the driving assembly of the locking mechanism, the first locking component is engaged with the second locking component at a preset position to lock the bottle cap, or the first locking component is separated from the second locking component to unlock the bottle cap.

[0006] A further improvement of the present invention is that the driving assembly includes: a rotating shaft, which is vertically arranged on the bottle cap and can rotate around its vertical axis, and the rotating shaft is 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 around the vertical axis; 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 achieving engagement and locking or separation and unlocking of the first locking component and the second locking component.

[0007] A further improvement of the present invention is that a receiving groove is provided on the top surface of the bottle cap, and the receiving groove is used to accommodate the pull ring of the drive assembly; the pull ring can rotate around the horizontal axis of the rotating shaft and is accommodated in the receiving groove after rotation to prevent children from accidentally touching the bottle cap and causing it to be accidentally unlocked.

[0008] A further improvement of the present invention is that the pull ring is provided with an identification structure for distinguishing between a locked state and an unlocked state; the identification structure includes visual or tactile marks arranged on the front and back sides of the pull ring, which indicates that the bottle cap is in a locked state when the front side of the pull ring faces upward and is placed in the receiving groove; and indicates that the bottle cap is in an unlocked state when the back side of the pull ring faces upward and is placed in the receiving groove.

[0009] According to a further improvement of the present invention, a pull strip is provided on the inner side of the pull ring, and the pull strip is used to assist the user to apply force to pull the pull ring so that the pull ring is rotated and raised from the receiving groove.

[0010] A further improvement of the present invention is that a cover piece is rotatably mounted on the top surface of the bottle cap, and the cover piece covers the opening of the accommodating groove to cover the accommodating groove; a limiting groove is provided on the bottom surface of the cover piece, and a limiting block is provided on the top surface of the bottle cap, and the limiting block cooperates with the limiting groove to limit the rotation range of the cover piece.

[0011] A further improvement of the present invention is that the cosmetic plastic packaging bottle with limited opening also includes an automatic alignment mechanism, which is used to automatically align the first locking component and the second locking component to a preset position during rotation; the automatic alignment mechanism includes: a groove arranged on the inner wall of the bottle cap close to the opening, and a guide column arranged on the outer wall of the bottle body close to the opening, the groove cooperates with the guide column through 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 entrance part of the groove is provided with a guide surface with a certain inclination angle, and the guide surface is used to guide the guide column to slide into the main part of the groove, and the upper part of the guide surface is a hollow structure so that the guide column can smoothly enter the groove body; the top of the guide column corresponds to the entrance position of the bottle cap groove, and when the bottle cap is assembled by rotating clockwise, the groove slides into the corresponding guide column through rotation, and through the cooperation of the groove and the guide column, 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 the grooves is several and is evenly distributed around the inner wall of the bottle cap, and the main part of the groove is arc-shaped; the number of the guide columns corresponds to the number of the grooves on the inner wall of the bottle cap and matches each other in circumferential position, and the top of each guide column is hemispherical in shape to smoothly enter the entrance of the groove.

[0014] According to a further improvement of the present invention, the first locking component is a tooth-shaped protrusion, the second locking component is a tooth-shaped groove, and the first locking component is engaged 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: 1. By setting the mating engagement structure of the first locking part and the second locking part, when the bottle cap is connected by rotating the thread, the user can realize the locking operation through the driving component, so that the bottle cap is firmly fixed to the bottle body, preventing the bottle cap from opening due to accidental touch or accidental rotation. This design is particularly suitable for family environments to avoid safety hazards caused by children accidentally opening the bottle cap.

[0016] 2. The drive assembly of the locking mechanism is set on the bottle cap. Users can easily complete the locking or unlocking operation by rotating the drive assembly without additional tools, which is in line with daily usage habits. At the same time, the structural design optimizes the convenience of the operation process, and even users with less strength can easily complete the operation.

[0017] To sum up, the safety, practicality and user experience of plastic packaging bottles for cosmetics have been significantly improved, providing consumers with a safer and more convenient way of use. It can achieve reliable locking and convenient unlocking of the bottle cap, effectively avoiding accidental opening problems, and at the same time has the characteristics of simple structure and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of an exploded structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the bottle cap of the present invention; Figure 4 It is another schematic diagram of the decomposed structure of the present invention; Figure 5 It is another decomposition structure schematic diagram of the present invention; Figure 6 It is a schematic cross-sectional structure diagram of the bottle cap and the bottle body in a locked state according to the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of part A; Figure 8 It is a schematic diagram of the three-dimensional structure of the cover sheet of the present invention; Fig. 9 A schematic diagram of a reference structure of the present invention in use state; Fig.10 It is a schematic diagram of the cross-sectional structure of the bottle cap and the bottle body in an unlocked state according to the present invention.

[0019] In the figure: 1. bottle body; 2. bottle cap; 21. limit block; 3. locking mechanism; 31. driving assembly; 311. rotating shaft; 3111. connecting part; 312. pull ring; 313. pull strip; 32. first locking component; 33. second locking component; 4. accommodating groove; 51. guide column; 52. groove; 6. cover plate; 61. limit groove. DETAILED DESCRIPTION

[0020] The present invention is described in more detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto. The examples are exemplary and are intended to be used to explain the present invention, but cannot be understood as limiting the present invention. For process parameters or conditions not particularly noted, conventional techniques may be used.

[0021] See also Figure 1 and Figure 2 The technical solution adopted in this specific embodiment is: a cosmetic plastic packaging bottle with 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.; a bottle cap 2, connected to the bottle body 1 through a thread, for closing the bottle body 1; specifically, the bottle body 1 in this embodiment is made of durable plastic material and is cylindrical in shape. The outer wall of the bottle body 1 is provided with a thread, which is used to connect with the inner thread of the bottle cap 2 to ensure the sealing between the bottle cap 2 and the bottle body 1 and prevent the leakage of cosmetics.

[0022] See also Figure 2 , Figure 3 , Figure 4 and Figure 5 The locking mechanism 3 is arranged 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 driving component 31, which is arranged on the bottle cap 2 and is used for manual operation by the user to control locking or unlocking.

[0023] 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 arranged on the inner side of the opening of the bottle body 1, and is used to cooperate with the first locking component 32 to form locking or unlocking; through the rotation operation of 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.

[0024] In this embodiment, the above design ensures that the bottle cap 2 can be firmly locked after being threaded by providing a locking mechanism 3 between the bottle cap 2 and the bottle body 1. The user manually operates the drive assembly 31 to complete locking or unlocking, which greatly reduces the phenomenon of the bottle cap 2 being opened due to accidental touch or external force, and significantly improves the sealing, safety and reliability of the cosmetic packaging.

[0025] See also Figure 3 , Figure 4 and 5 The drive assembly 31 includes: a rotating shaft 311, which is vertically arranged on the bottle cap 2 and can rotate around its vertical axis, and the rotating shaft 311 is rotatably connected to the bottle cap 2; a pull ring 312, which is installed on the top of the rotating shaft 311, and is used for the user to manually rotate the pull ring 312 to drive the rotating shaft 311 to rotate around the vertical axis; a connecting portion 3111, which is located at the bottom of the rotating shaft 311, and is used to transmit the rotation action of the rotating shaft 311 to the first locking component 32, so as to achieve the meshing locking or separation unlocking of the first locking component 32 and the second locking component 33. Specifically, the first locking component 32 is fixed to the connecting portion 3111, and the connecting portion 3111 and the rotating shaft 311 can be an integrated structure, but it is not limited to this, and can also be a split structure. In this embodiment, the design of the above-mentioned drive assembly 31 enables the user to complete the locking or unlocking process by simply rotating the pull ring 312 without the need for additional tools. The design structure is simple, easy to operate, and conforms to the daily use habits of users, which effectively improves the convenience of use. The locking operation is transmitted by the vertical rotation of the rotating shaft 311, thereby ensuring the accuracy and stability of the action of the locking mechanism 3.

[0026] Specifically, the rotating shaft 311 runs through the bottle cap 2 and is fixed in the bottle cap 2 by a rotating connection, and can be set at the center of the bottle cap 2, but it is obviously not limited to this, and can also be set at a position deviating from the center of the bottle cap 2. The rotating shaft 311 can rotate around the vertical axis to achieve the transmission of the locking or unlocking action. The pull ring 312 is fixed to the top of the rotating shaft 311 and adopts a ring design for easy user operation. When the user needs to lock or unlock, the pull ring 312 can be grasped by the fingers and rotated in a clockwise or counterclockwise direction. The design of the pull ring 312 is ergonomic, and its surface has a non-slip texture for easy grasping operation. At the same time, the pull ring 312 can be folded and accommodated in the receiving groove 4 at the top of the bottle cap 2 when not in use, which is both beautiful and prevents children from misoperating.

[0027] 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 to ensure that the bottle cap 2 is completely fitted with the bottle body 1; then, the user grabs 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, and the rotating shaft 311 drives the connecting part 3111 and the first locking part 32 to rotate, so that the first locking part 32 is engaged with the second locking part 33. When the two are fully engaged, the locking operation is completed, thereby preventing the bottle cap 2 from being opened by mistake. Unlocking operation: the user grabs the pull ring 312 and rotates it clockwise, the rotation of the pull ring 312 drives the rotating shaft 311 to rotate clockwise synchronously, and the rotating shaft 311 drives the first locking part 32 to rotate; when the first locking part 32 is completely separated from the second locking part 33, the locking state is released, and the bottle cap 2 is in an unlocked state; after the unlocking is completed, the user can unscrew the bottle cap 2 by rotating it counterclockwise, so as to open the bottle body 1 and take the cosmetics conveniently.

[0028] See also Figure 4 , Figure 5 , Figure 6 , Fig. 9 and Fig.10 , a receiving groove 4 is provided on the top surface of the bottle cap 2, and the receiving groove 4 is used to accommodate the pull ring 312 of the driving assembly 31; the pull ring 312 can rotate around the horizontal axis of the rotating shaft 311, and after rotation, it is accommodated in the receiving groove 4 to prevent the bottle cap 2 from being accidentally unlocked due to accidental touch by children. In addition, the top of the rotating shaft 311 can be accommodated 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 in the receiving groove 4, thereby avoiding the problem of accidental touch and opening caused by the exposure of the pull ring 312, and further improving the safety of preventing accidental opening. This design also makes the overall appearance of the bottle cap 2 more integrated, taking into account both aesthetics and functionality.

[0029] Specifically, the shape of the receiving groove 4 is adapted to the shape of the pull ring 312, and can be a ring shape with an appropriate depth, so that the pull ring 312 can be completely pulled, 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 the 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 from the receiving groove 4, and the pull ring 312 can be grasped to drive the rotating shaft 311 to perform the corresponding operation. When the operation is completed, the user can rotate the pull ring 312 back into the receiving groove 4 again to make it flush with the top surface of the bottle cap 2.

[0030] See also Figure 4 , Figure 6 , Fig. 9 and Fig.10 In the locked state, the pull ring 312 is completely hidden in the receiving groove 4, and the design of the receiving groove 4 prevents the pull ring 312 from easily detaching or rotating without external force, further reducing the possibility of accidental touching by children. At the same time, the edge of the receiving groove 4 can be designed to be slightly raised to increase protection. For example, when the user uses the packaging bottle, lift the pull ring 312 from the receiving groove 4 and rotate the pull ring 312 counterclockwise to drive the locking mechanism 3 to complete the locking operation. After the locking is completed, the user rotates the pull ring 312 back into the receiving groove 4, and the pull ring 312 fits flush with the receiving groove 4 to play a protective role. When unlocking is required, the user can reverse the pull ring 312 to achieve smooth opening of the bottle cap 2. This design not only ensures the convenience of operation, but also improves the safety and practicality of the product.

[0031] The pull ring 312 is provided with an identification structure for distinguishing between a locked state and an unlocked state; the identification structure includes visual or tactile marks arranged on the front and back sides of the pull ring 312. When the front side of the pull ring 312 faces upward and is placed in the receiving groove 4, it indicates that the bottle cap 2 is in a locked state; when the back side of the pull ring 312 faces upward and is placed in the receiving groove 4, it indicates that the bottle cap 2 is in an unlocked state.

[0032] 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, used to indicate the locked state; the second identification can be a green area or a recessed mark structure, used to indicate the unlocked state. However, it is obviously not limited to this. In addition to the above identification, other identification structures are also applicable to this embodiment. For example, the first identification is in the shape of a closed character, and the second identification is in the shape of a opened character, and they are distinguished by fonts of different shapes.

[0033] See also Figure 4 , Figure 5 and Fig. 9A pull strip 313 is provided on the inner side of the pull ring 312, and the pull strip 313 is used to assist the user to apply force to pull the pull ring 312 so that the pull ring 312 is rotated and lifted from the accommodating groove 4; by lifting 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.

[0034] In this embodiment, the pull strip 313 is arranged inside the pull ring 312, that is, the two ends of the pull strip 313 are respectively fixed at the two ends of the inner wall of the pull ring 312, so that the user can press the pull strip 313 with his fingers; the pull strip 313 can be made of a flexible plastic material and is in the shape of a strip. The position and shape of the pull strip 313 can ensure that the user can easily grasp and pull it when using it. By applying appropriate force, the pull strip 313 will help the user to easily lift the pull ring 312 from the receiving groove 4. When the pull ring 312 needs to be lifted, the user grabs the pull strip 313 with his fingers and pulls it with force. The structure of the pull strip 313 will effectively disperse the force, so that the pull ring 312 slowly rotates and lifts from the receiving groove 4. When the pull ring 312 is lifted, it will completely detach from the receiving groove 4, which is convenient for the user to further operate. 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. Therefore, the design of the pull strip 313 allows the user to easily apply force to raise the pull ring 312, avoiding the inconvenience caused by the difficulty in operating the pull ring 312, effectively reducing the difficulty of operation, and is particularly suitable for user groups with less strength, such as women or the elderly, thereby improving user friendliness and operating experience.

[0035] See also Figure 4 , Figure 5 , Figure 8 and Fig. 9 , a cover piece 6 is rotatably mounted on the top surface of the bottle cap 2, and the cover piece 6 covers the opening of the receiving groove 4, and is used to cover the receiving groove 4; a limiting groove 61 is provided on the bottom surface of the cover piece 6, and a limiting block 21 is provided on the top surface of the bottle cap 2, and the limiting block 21 cooperates with the limiting groove 61 to limit the rotation range of the cover piece 6. Among them, the cover piece 6 is mounted on the top surface of the bottle cap 2 through a rotatable shaft, and the cover piece 6 is parallel to the bottle cap 2, and the two are arranged horizontally. When the cover piece 6 is rotated, the cover piece 6 rotates horizontally relative to the bottle cap 2. However, in order to prevent the pull ring 312 from being accidentally touched or accidentally unlocked, the design of the cover piece 6 plays a very critical protective role. The design of the cover piece 6 ensures that the locking and unlocking process of the bottle cap 2 is safer and more reliable by covering the receiving groove 4, and further enhances the effect of preventing accidental opening.

[0036] The main function of the cover piece 6 is to cover the opening of the receiving groove 4 to prevent the pull ring 312 or other driving components 31 from being accidentally touched and causing the bottle cap 2 to be unlocked. The design of the cover piece 6 ensures that the receiving groove 4 is completely covered during normal use to avoid unauthorized contact. Specifically, the limit block 21 is arranged on the top surface of the bottle cap 2 and is precisely docked with the limit groove 61 to form a match. In this way, when the cover piece 6 encounters the obstruction of the limit block 21 during rotation, it stops rotating, ensuring that the cover piece 6 firmly covers the opening of the receiving groove 4. The design of the limit block 21 and the limit groove 61 makes it difficult for the cover piece 6 to lose its original position due to a slight external collision or accidental touch, thereby avoiding accidental exposure of the receiving groove 4. When the bottle cap 2 is in a locked state, the cover piece 6 can firmly cover the opening of the receiving groove 4. At this time, the cooperation between the cover piece 6, the limit block 21 and the limit groove 61 ensures that the cover piece 6 is not easily accidentally rotated due to external forces, which plays a stabilizing role. However, the covering function of the cover sheet 6 greatly enhances the anti-accidental opening performance of the packaging bottle, especially when operated by children or users who are not familiar with the product, the cover sheet 6 provides a physical barrier. When the user needs to operate the pull ring 312, he first needs to manually rotate the cover sheet 6. The rotation of the cover sheet 6 will expose the receiving groove 4, and the user can directly contact the pull ring 312 to lock or unlock the operation. In addition, the pull ring 312 is effectively protected from external interference, and dust and dirt are prevented from entering the receiving groove 4, further enhancing the anti-accidental touch function and improving the overall aesthetics of the bottle cap 2. The limit groove 61 of the cover sheet 6 cooperates with the limit block 21 of the bottle cap 2 to ensure the stability and precise positioning of the cover sheet 6 when covering the receiving groove 4, thereby improving the overall safety of the product.

[0037] See also Figure 2 and Figure 3 The cosmetic plastic packaging bottle with limited opening also includes an automatic alignment mechanism, which is used to automatically align the first locking component 32 and the second locking component 33 to a preset position during the rotation process. During the rotation process, the guide column 51 and the groove 52 are in mechanical contact to convert the rotation force into an alignment action, and finally the two locking components reach the preset working position.

[0038] The preset working position can preferably be a progressive meshing design, and the first locking part 32 and the second locking part 33 are designed to be progressively meshing. When the bottle cap 2 is nearly fully screwed in, the first locking part 32 only partially enters the second locking part 33. At this time, the locking effect is not complete, but the bottle cap 2 has a certain rotation damping, and the user can sense the approaching locked state. Continue to rotate to the full angle, the first locking part 32 completely enters the second locking part 33, and the locking takes effect. Among them, the first locking part 32 can be a toothed protrusion, and the second locking part 33 can be a toothed groove. In addition, the preset working position can also be a locking position. After the bottle cap 2 is fully rotated to the specified angle, the guide column 51 slides into the main part of the groove 52, the first locking part 32 and the second locking part 33 are fully meshed, and the bottle cap 2 is firmly locked with the bottle body 1 and cannot be opened by accidental touch. It should be noted that the preset position can be determined according to specific design requirements.

[0039] See also Figure 2 , Figure 3 , Figure 6 and Fig.10 The automatic alignment mechanism includes: a groove 52 arranged on the inner wall of the bottle cap 2 close to the opening; a guide column 51 arranged on the outer wall of the bottle body 1 close to the opening, and the groove 52 cooperates with the guide column 51 through rotation to ensure that the first locking component 32 is aligned with the second locking component 33.

[0040] Specifically, the function of the guide column 51 is to guide the bottle cap 2 to align and enter the groove 52 of the bottle cap 2 during the rotation process, ensuring that the bottle cap 2 can accurately dock with the first locking component 32 and the second locking component 33 of the bottle body 1. During the automatic alignment operation, alignment during rotation: when the user rotates the bottle cap 2, the guide column 51 enters the groove 52 of the bottle cap 2 by cooperating with the groove 52. At this time, the guide column 51 will be guided by the guide surface of the groove 52 to ensure that the guide column 51 slides smoothly into the groove body. Due to the precision of the design of the guide column 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 are smoothly locked or unlocked. Alignment stability: Due to the cooperation between the guide column 51 and the groove 52, the bottle cap 2 and the bottle body 1 always maintain the correct relative position during the rotation process, so that the first locking component 32 and the second locking component 33 are docked correctly, avoiding locking failure or incomplete unlocking due to misalignment.

[0041] 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 to ensure that the locking parts of the bottle cap 2 and the bottle body 1 are aligned. Due to the precise docking of the guide post 51 and the groove 52, the first locking part 32 and the second locking part 33 are automatically aligned during the rotation process. Specifically, the positions of the first locking part 32 and the second locking part 33 can be accurately matched, thereby ensuring that they can be smoothly engaged or separated.

[0042] However, the automatic alignment mechanism effectively avoids the situation where the user causes the position of the locking parts to be disordered due to asymmetrical rotation of the bottle cap 2. Especially when the user operates quickly, the automatic alignment mechanism can quickly and accurately ensure that the positions of the first locking part 32 and the second locking part 33 are accurately matched. Moreover, the automatic alignment mechanism simplifies the user's operating steps, making the locking and unlocking of the bottle cap 2 smoother, and the user does not need to adjust the position of the bottle cap 2 additionally, and the operation is more convenient.

[0043] Specifically, the grooves 52 are evenly distributed on the inner wall of the opening of the bottle cap 2, ensuring that the bottle cap 2 can dock smoothly and maintain balance during the rotation process. The symmetrical distribution design of the grooves 52 and the guide posts 51 is conducive to multi-point alignment and ensures the stability of the bottle cap 2 and the bottle body 1 after assembly. The entrance part of the groove 52 is provided with a guide surface with a certain tilt angle, and the guide surface is used to guide the guide post 51 to slide into the main part of the groove 52, and the upper part of the guide surface is 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, and its angle can be 15°~30°; the groove 52 includes a guide surface and a groove body. The guide surface is the guiding part of the groove 52, which is 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 end of the guide column 51 corresponds to the entrance position of the groove 52 of the bottle cap 2. When the bottle cap 2 is assembled by rotating clockwise, the groove 52 slides into the corresponding guide column 51 through rotation. Through the cooperation of the groove 52 and the guide column 51, the bottle cap 2 and the bottle body 1 are automatically aligned and fixed.

[0044] Among them, the number of grooves 52 is several and evenly distributed around the inner side wall of the bottle cap 2. The entrance of each groove 52 is provided with an inclined guide surface at a certain angle, which is used to guide the guide column 51 to enter the main part of the groove. The main part of the groove 52 is designed in an arc shape, which can fit the guide column 51 tightly. The guide column 51 is vertically arranged on the outer side wall of the bottle body 1 near the opening. The number of guide columns 51 corresponds to the number of grooves 52 on the inner side wall of the bottle cap 2, and matches in circumferential position. In other words, each guide column 51 can accurately align with and enter its corresponding groove 52. The top of each guide column 51 is hemispherical in shape so as to smoothly enter the entrance of the groove 52. In addition, the shape of the groove 52 can be V-shaped, U-shaped or linear, and the specific shape depends on the design of the guide column 51 and the positioning accuracy required between the bottle cap 2 and the bottle body 1. The specific shape can be determined according to needs.

[0045] It should be noted that the specific arrangement of the groove 52 can be designed as 3 to 4 grooves 52 to achieve multi-point positioning and stability; the shape of the groove 52: the entrance part of the groove 52 is designed as a downward inclined 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 mm, which is enough to allow the bottom end of the guide column 51 to be stuck in without loosening.

[0046] See also Figure 2 , Figure 3 , Figure 6 and Fig.10 In this embodiment, first, 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 column 51 on the outer wall of the bottle body 1. By applying a slight rotational force, the bottle cap 2 rotates in a clockwise direction. As the rotation proceeds, the entrance part of the groove 52 on the inner wall of the bottle cap 2 contacts the top of the guide column 51. The inclined guide surface guides the guide column 51 to gradually slide into the main part of the groove, completing the precise matching of the guide column 51 and the groove 52. When the guide column 51 completely slides into the main part of the groove, the bottle cap 2 is aligned with the bottle body 1, and the first locking component 32 is automatically aligned with the second locking component 33, preparing for the subsequent locking operation. With the assistance of the automatic alignment mechanism, the user continues to rotate the bottle cap 2, so that the first locking component 32 and the second locking component 33 are engaged through rotation, thereby achieving the locking of the bottle cap 2 and the bottle body 1.

[0047] In this embodiment, the automatic alignment mechanism ensures efficient alignment of the bottle cap 2 and the bottle body 1 during assembly through the design of the groove 52 and the guide column 51, reduces the trouble of manual alignment, and improves the convenience of use and operating efficiency. In addition, the inclined guide surface and the hemispherical top structure of the guide column 51 enhance the smoothness of the alignment process and effectively avoid the jamming phenomenon during the assembly process. However, the combination of the groove 52 and the guide column 51 is strong in stability, making the locking and unlocking operations more reliable, and further improving the safety of the anti-misopening function.

[0048] It should be understood that the cooperation mechanism of the rotational guide method is that when the bottle cap 2 is rotationally connected to the bottle body 1 through a thread, during the rotation process, the vertical pressure generated by the thread pushes the guide column 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 part of the groove.

[0049] It should be noted that the groove 52 is designed at a position near the bottle cap opening on the inner wall of the bottle cap 2. The groove 52 can be designed to penetrate the edge of the bottle cap opening so that the guide column 51 can quickly enter the guide area of ​​the groove 52 during the rotation process, thereby making it easier to achieve automatic alignment of the bottle cap 2 and the bottle body 1. In addition, the groove 52 can also be designed to be closer to the edge of the bottle cap opening, but will not directly penetrate the edge of the bottle cap opening, that is, the edge of the bottle cap opening still maintains a complete annular structure. The position of the groove 52 is usually slightly lower than the edge of the bottle cap opening, such as 2 to 4 mm lower than the bottle cap opening, to ensure that the groove 52 does not destroy the sealing and structural integrity of the bottle cap opening. The specific design method can be determined according to demand.

[0050] See also Figure 3 , Figure 5 , Figure 6 , Figure 7 and Fig.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 by rotation to achieve locking. The shape of the toothed protrusion is designed to be a convex structure similar to a triangle, with a flat edge and a moderate angle, ensuring that it can form a stable engagement with the toothed groove in the bottle body 1. Specifically, the size of the toothed protrusion can be 1.5mm in height and 2mm in width; the size of the toothed groove can be 1.5mm in depth and 2.5mm in width. However, the first locking component 32 and the second locking component 33 adopt the engagement mode of the toothed protrusion and the toothed groove, which not only has high locking reliability, but also has a simple engagement structure and is easy to manufacture and maintain. This design also has excellent wear resistance and can significantly extend the service life of the product.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. There are many ways of detachable installation, for example, it can be through the method of plug-in and snap-on matching, and for example, through the method of bolt connection, etc.

[0052] The above clearly and completely describes the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation.

[0053] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. A cosmetic plastic packaging bottle with limited opening, characterized in that: include: A bottle body having an opening for containing cosmetics; A bottle cap, connected to the bottle body via threads, and used to close the bottle body; A locking mechanism, disposed between the bottle cap and the bottle body, for locking the bottle cap after the bottle cap and the bottle body are threadedly connected; The locking mechanism comprises: A drive assembly, disposed on the bottle cap, for manual operation by a user to control locking or unlocking; A first locking component is connected to the driving assembly and moves with the operation of the driving assembly; A second locking component is disposed inside the opening of the bottle body and is used to cooperate with the first locking component to form locking or unlocking; The driving assembly of the locking mechanism is rotated to make the first locking component engage with the second locking component at a preset position to lock the bottle cap, or to make the first locking component separate from the second locking component to unlock the bottle cap.

2. A cosmetic plastic packaging bottle with limited opening according to claim 1, characterized in that: The drive assembly comprises: A rotating shaft is vertically arranged on the bottle cap and can rotate around its vertical axis, and the rotating shaft is rotatably connected to the bottle cap; A pull ring, mounted on the top of the rotating shaft, for a user to manually rotate the pull ring to drive the rotating shaft to rotate around a vertical axis; The connecting portion is located at the bottom of the rotating shaft and is used to transmit the rotation of the rotating shaft to the first locking component, thereby realizing the meshing locking or separation unlocking of the first locking component and the second locking component.

3. A cosmetic plastic packaging bottle with limited opening according to claim 1, characterized in that: The top surface of the bottle cap is provided with a receiving groove, and the receiving groove is used for receiving the pull ring of the driving assembly; The pull ring can rotate around the horizontal axis of the rotating shaft, and after the rotation, it is accommodated in the receiving groove to prevent children from accidentally touching the bottle cap and causing it to be accidentally unlocked.

4. A cosmetic plastic packaging bottle with limited opening according to claim 3, characterized in that: The pull ring is provided with an identification structure for distinguishing a locked state and an unlocked state; the identification structure includes visual or tactile marks arranged on the front and back sides of the pull ring, and when the front side of the pull ring faces upward and is placed in the receiving groove, it indicates that the bottle cap is in a locked state; when the back side of the pull ring faces upward and is placed in the receiving groove, it indicates that the bottle cap is in an unlocked state.

5. A cosmetic plastic packaging bottle with limited opening according to claim 3, characterized in that: A pull strip is arranged on the inner side of the pull ring, and the pull strip is used to assist the user to apply force to pull the pull ring so that the pull ring is rotated and lifted from the accommodating groove.

6. A cosmetic plastic packaging bottle with limited opening according to claim 3, characterized in that: A cover sheet is rotatably mounted on the top surface of the bottle cap, and the cover sheet covers the opening of the receiving groove and is used to cover the receiving groove; The bottom surface of the cover sheet is provided with a limiting groove, and the top surface of the bottle cap is provided with a limiting block, and the limiting block cooperates with the limiting groove to limit the rotation range of the cover sheet.

7. A cosmetic plastic packaging bottle with limited opening according to claim 1, characterized in that: The cosmetic plastic packaging bottle with limited opening also includes an automatic alignment mechanism, which is used to automatically align the first locking component and the second locking component to a preset position during the rotation process; The automatic alignment mechanism includes: a groove arranged on the inner wall of the bottle cap close to the opening, and a guide column arranged on the outer wall of the bottle body close to the opening, wherein the groove cooperates with the guide column by rotation to ensure that the first locking component is aligned with the second locking component.

8. A cosmetic plastic packaging bottle with limited opening according to claim 7, characterized in that: The entrance part of the groove is provided with a guide surface with a certain inclination angle, and the guide surface is used to guide the guide column to slide into the main part of the groove, and the upper part of the guide surface is a hollow structure so that the guide column can smoothly enter the main body of the groove; The top of the guide column corresponds to the entrance position of the bottle cap groove. When the bottle cap is assembled by rotating clockwise, the groove slides into the corresponding guide column through rotation, and the bottle cap and the bottle body are automatically aligned and fixed through the cooperation of the groove and the guide column.

9. A cosmetic plastic packaging bottle with limited opening according to any one of claims 7 or 8, characterized in that: The number of the grooves is several and they are evenly distributed around the inner wall of the bottle cap, and the main part of the groove is arc-shaped; The number of the guide posts corresponds to the number of the grooves on the inner side wall of the bottle cap and matches each other in circumferential position, and the top of each guide post is in a hemispherical shape so as to smoothly enter the entrance of the groove.

10. A cosmetic plastic packaging bottle with limited opening according to any one of claims 1 to 8, characterized in that: The first locking component is a tooth-shaped protrusion, and the second locking component is a tooth-shaped groove. The first locking component is engaged with the second locking component by rotation to achieve locking.

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