Packaging tube

Abstract

This application discloses a packaging tube, including a base, a top cover, and a central core. The top cover and the base cooperate to form a cavity for accommodating the central core. The central core is fixedly connected to the base, and the base and the top cover are snap-fitted together. A protruding ring is arranged on the base, and the protruding ring is flush with the top surface of the base. This packaging tube design, by arranging a protruding ring on the base and making the protruding ring flush with the top surface of the base, allows the protruding ring to snap-fit ​​with the top cover, while cleverly concealing the protruding ring so that consumers are less likely to notice its presence, effectively improving the aesthetics of the product and enhancing its perceived quality.

Description

Technical Field

[0001] This application relates to the field of cosmetic packaging, and in particular to a packaging tube. Background Technology

[0002] Currently, existing lipstick packaging tubes on the market mainly consist of a base, a central core, and a top cap. The top cap and base work together to form a cavity that accommodates the central core. The two components can be fitted in various ways, such as snap-fit ​​or magnetic engagement. Snap-fit ​​structures require protrusions or grooves on the base to engage with the top cap. However, this design, with protrusions or grooves on the base, detracts from the overall appearance of the packaging tube, reducing the product's quality and perceived value, and thus requires further optimization and improvement. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a packaging tube.

[0004] The packaging tube includes a base, a top cover, and a middle core. The top cover and the base cooperate to form a cavity for accommodating the middle core. The middle core is fixedly connected to the base. The base and the top cover are snap-fitted together. A protruding ring is arranged on the base, and the protruding ring is flush with the top surface of the base.

[0005] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0006] Optionally, the base includes an outer bottom and an inner bottom that are fixedly connected, the inner bottom having a first connecting portion that is tapered and extends out of the outer bottom, and the protruding ring being located at the top of the first connecting portion.

[0007] Optionally, the thickness of the protruding ring relative to the first connecting portion is 0.09 to 0.15 mm.

[0008] Optionally, the ratio of the maximum thickness of the protruding ring at the top of the first connecting portion to the thickness of the first connecting portion is 1.08 to 1.16:1.

[0009] Optionally, the top cover includes an outer cover and an inner cover that are fixedly connected. The inner cover includes a second connecting part that is sleeved on the outer periphery of the first connecting part and has a clearance fit with the first connecting part. The second connecting part is provided with a plurality of protrusions that cooperate with the convex ring.

[0010] Optionally, both the first connecting portion and the second connecting portion have square cross-sections.

[0011] Optionally, the middle core includes a storage element, a guide element, and a drive element that rotates with the guide element. The inner wall of the drive element is provided with an internal thread. The storage element passes through the guide element and engages with the internal thread. A circumferential limiting mechanism and an axial limiting mechanism are arranged between the drive element and the base.

[0012] Optionally, the base includes an outer bottom and an inner bottom that are fixedly connected, and the circumferential limiting mechanism includes a positioning key disposed on the inner bottom and arranged axially, and a positioning rib disposed on the driving element.

[0013] The axial limiting mechanism includes an annular groove disposed on the inner bottom and a positioning ring disposed on the driving element.

[0014] Optionally, a positioning seat is provided on the bottom wall of the inner bottom, and the bottom of the driving element extends into the positioning seat and is interference-fitted with the inner surface of the positioning seat.

[0015] Optionally, a decorative element may be included, which is fixed to the guide element, and the storage element may be concealed within the decorative element.

[0016] The packaging tube of this application has a protruding ring arranged on the base and flush with the top surface of the base. This design allows the protruding ring to be snapped into the top cover, while cleverly hiding the protruding ring so that consumers are not easily aware of its existence, effectively improving the aesthetics of the product and enhancing its grade. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a packaging tube according to an embodiment provided in this application;

[0018] Figure 2 An exploded view of a packaging tube according to an embodiment provided in this application;

[0019] Figure 3 This is a schematic diagram of the inner cover structure;

[0020] Figure 4 This is a sectional view of the inner bottom.

[0021] The annotations in the figure are explained as follows:

[0022] 100. Base; 110. Outer bottom; 120. Inner bottom; 121. First connecting part; 122. Protruding ring; 123. First section; 124. Second section; 125. Positioning seat; 126. Positioning key; 127. Annular groove; 130. Extension part; 131. Positioning rib;

[0023] 200. Top cover; 210. Outer cover; 220. Inner cover; 221. Second connecting part; 222. Protrusion; 223. Clearance area;

[0024] 300. Middle core; 310. Storage element; 311. Cylinder; 312. Transmission rod; 320. Guide element; 321. Limiting hole; 330. Drive element; 331. Internal thread; 332. Positioning rib; 333. Positioning ring; 340. Decorative element. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a system, product, or device that includes a series of units is not necessarily limited to those units that are explicitly listed, but may include other units that are not explicitly listed or that are inherent to such products or devices.

[0030] See Figures 1-4 One embodiment of this application provides a packaging tube, including a base 100, a top cover 200 and a middle core 300. The top cover 200 and the base 100 cooperate to form a cavity for accommodating the middle core 300, and the middle core 300 is fixedly connected to the base 100.

[0031] The middle core 300 can adopt an existing structure, for example, see [link to relevant documentation] Figure 1 The central core 300 includes a storage element 310, a guide element 320, and a drive element 330. The inner wall of the drive element 330 is provided with an internal thread 331. The guide element 320 is sleeved on the outer periphery of the drive element 330 and rotates in cooperation with the drive element 330. The storage element 310 includes a cylindrical body 311 for holding cosmetics and a transmission rod 312. The top of the guide element 320 is provided with a limiting hole 321 that is adapted to the shape of the transmission rod 312 to limit the rotation of the transmission rod. The transmission rod 312 passes through the limiting hole 321 and cooperates with the internal thread 331. When the drive element 330 rotates relative to the guide element 320, the storage element 310 moves axially.

[0032] In one embodiment, the central core 300 further includes a decorative element 340, which is fixed to the guide element 320 in the figure, and the storage element 310 is hidden within the decorative element 340. The decorative element 340 not only enhances the overall aesthetics, but also helps to maintain the stability of the storage element 310 when the drive element 330 rotates relative to the guide element 320 and the storage element 310 moves axially, preventing it from shifting or wobbling during movement and ensuring that the storage element 310 moves in the expected manner.

[0033] In one embodiment, the base 100 and the top cover 200 of this application are snap-fitted together. A protruding ring 122 is arranged on the base 100, and the protruding ring 122 is flush with the top surface of the base 100. This design allows the protruding ring 122 to be snap-fitted with the top cover 200. At the same time, since the protruding ring 122 is on the top surface of the base 100, it is not easily visible. Therefore, the protruding ring 122 can be cleverly hidden and is not easily noticed, effectively improving the aesthetics of the product and enhancing its grade.

[0034] In one embodiment, the base 100 includes an outer base 110 and an inner base 120 that are fixedly connected. For details regarding the connection method, please refer to... Figure 1 as well as Figure 2 The inner sole 120 has a circumferentially arranged extension 130 on its outer wall. The extension 130 abuts against the inner wall of the outer sole 110, and the top surface of the extension is flush with the top surface of the outer sole 110, making the overall appearance more aesthetically pleasing. The inner sole 120 is also provided with a positioning rib 131 that starts from the bottom surface of the extension 130 and extends downward. The positioning rib 131 can be interference-fitted with the inner wall of the outer sole 110 for a more secure fit. Of course, to further increase the strength, adhesive can also be applied between the outer sole 110 and the inner sole 120.

[0035] In one embodiment, the inner sole 120 has a tapered portion 121 that extends beyond the outer sole 110. In the figures, the first connecting portion 121 is positioned above the extension 130, and a raised ring 122 is located at the top of the first connecting portion 121. See also... Figure 4 The convex ring 122 includes a first segment 123 with a large curvature and a second segment 124 with a small curvature. The first segment 123 is connected to the top surface of the inner insole 120 and is an arc with a radius of 0.81mm. The second segment 124 is fitted to the outer wall of the inner insole 120, making it visually imperceptible.

[0036] In one embodiment, the thickness of the protruding ring 122 relative to the first connecting portion 121 is 0.09 to 0.15 mm.

[0037] In one embodiment, the ratio of the maximum thickness of the protruding ring 122 at the top of the first connecting portion 121 to the thickness of the first connecting portion 121 is 1.08 to 1.16:1.

[0038] In one embodiment, an axial limiting mechanism and a circumferential limiting mechanism are arranged between the driving element 330 and the base 100, for example... Figures 1-4 In the middle, the circumferential limiting mechanism includes a positioning key 126 disposed on the inner bottom 120 and arranged axially, and a positioning rib 332 disposed on the driving element 330. The axial limiting mechanism includes an annular groove 127 disposed on the inner bottom 120 and a positioning ring 333 disposed on the driving element 330. When the positioning key 126 and the positioning rib 332 cooperate, and the annular groove 127 and the positioning ring 333 cooperate, the fixed connection between the middle core and the base 100 can be realized.

[0039] See Figure 1 and Figure 4 A positioning seat 125 protrudes from the bottom wall of the inner bottom 120. The bottom of the drive element 330 extends into the positioning seat 125 and is interference-fitted with the inner surface of the positioning seat 125. The positioning seat 125 can prevent the bottom of the drive element 330 from shaking or loosening during operation, ensuring the stability of the drive element 330 during operation, enabling it to work reliably, and avoiding the impact on other components due to loosening.

[0040] See Figures 1-3 The top cover 200 includes an outer cover 210 and an inner cover 220 fixedly connected. The inner cover 220 includes a second connecting part 221 sleeved on the outer periphery of the first connecting part 121 and in clearance fit with the first connecting part 121. The second connecting part 221 is provided with a plurality of protrusions 222 that cooperate with the protruding ring 122. The protrusions 222 are strip-shaped and evenly distributed along the circumference. To facilitate the protrusions 222 passing over the protruding ring 122 during assembly, a hollow clearance area 223 is provided on the outer side wall of the inner cover 220. The clearance area 223 is positioned opposite to the protrusions 222, providing deformation space for the protrusions 222.

[0041] During the engagement of the top cover 200 and the base 100, opposing forces are applied to both, causing them to approach each other until the protruding ring 122 abuts against the protrusion 222. Subsequently, the force is continued to be applied, and the protrusion 222 is compressed and deformed, passing over the protruding ring 122 and then returning to its original position. At this point, the top cover 200 and the base 100 abut against each other, completing the fastening.

[0042] In one embodiment, both the first connecting portion 121 and the second connecting portion 221 have square cross-sections. Therefore, the second connecting portion 221 has four sidewalls. Preferably, each sidewall is provided with a protrusion 222 to enhance its fit with the protruding ring 122. In the packaging tube of this application, both the base 100 and the top cover 200 have square structures. When the two are snapped together, their outer surfaces are flush, making them more aesthetically pleasing.

[0043] During the assembly of the packaging tube, hot melt adhesive can be placed inside the outer cover 210 first, then the inner cover 220 can be placed on the fixture, the outer cover 210 can be placed in, and the tube can be pressed into place using a pneumatic press. Then, the middle core 300 and the inner bottom 120 can be assembled into a bottom semi-finished product using a fixture for later use. Hot melt adhesive can be placed inside the outer bottom 110, the bottom semi-finished product can be placed in the fixture, the outer bottom 110 can be placed in, and finally the tube can be pressed into place using a pneumatic press, thus completing the assembly.

[0044] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0045] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A packaging tube, comprising a base, a top cover, and a middle core, wherein the top cover and the base cooperate to form a cavity for accommodating the middle core, and the middle core is fixedly connected to the base, characterized in that, The base and the top cover are fastened together, and a protruding ring is arranged on the base, which is flush with the top surface of the base.

2. The packaging tube according to claim 1, characterized in that, The base includes an outer bottom and an inner bottom that are fixedly connected. The inner bottom has a first connecting portion that is tapered and extends out of the outer bottom, and the protruding ring is located at the top of the first connecting portion.

3. The packaging tube according to claim 2, characterized in that, The thickness of the convex ring protruding outward from the first connecting part is 0.09 to 0.15 mm.

4. The packaging tube according to claim 2, characterized in that, The ratio of the maximum thickness of the protruding ring at the top of the first connecting part to the thickness of the first connecting part is 1.08 to 1.16:

1.

5. The packaging tube according to claim 2, characterized in that, The top cover includes an outer cover and an inner cover that are fixedly connected. The inner cover includes a second connecting part that is sleeved on the outer periphery of the first connecting part and has a clearance fit with the first connecting part. The second connecting part has a plurality of protrusions that cooperate with the convex ring.

6. The packaging tube according to claim 5, characterized in that, Both the first connecting part and the second connecting part have square cross-sections.

7. The packaging tube according to claim 1, characterized in that, The middle core includes a storage element, a guide element, and a drive element that rotates with the guide element. The inner wall of the drive element is provided with an internal thread. The storage element passes through the guide element and engages with the internal thread. A circumferential limiting mechanism and an axial limiting mechanism are arranged between the drive element and the base.

8. The packaging tube according to claim 7, characterized in that, The base includes an outer bottom and an inner bottom that are fixedly connected, and the circumferential limiting mechanism includes a positioning key disposed on the inner bottom and arranged along the axial direction, and a positioning rib disposed on the driving element. The axial limiting mechanism includes an annular groove disposed on the inner bottom and a positioning ring disposed on the driving element.

9. The packaging tube according to claim 8, characterized in that, A positioning seat is provided on the bottom wall of the inner bottom, and the bottom of the driving element extends into the positioning seat and is interference-fitted with the inner surface of the positioning seat.

10. The packaging tube according to claim 7, characterized in that, It includes a decorative element, which is fixed to a guide element, and the storage element is hidden within the decorative element.

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