All-metal packaging tube with air-tight function

Abstract

The application discloses a full-metal packaging tube with air-tightness, which comprises a base and a cover body, the cover body comprises an inner cover and an outer cover which are both metal materials and are nested with each other, the base comprises an inner bottom and an outer bottom which are both metal materials and are nested with each other, the inner bottom has an extension exposed to the outer bottom, the extension comprises a first segment and a second segment which are separately arranged, the second segment is provided with a sealing ring, in a buckling state, the inner cover is clamped with the first segment, and the outer cover is sealed with the second segment through the sealing ring. The full-metal packaging tube with air-tightness has the advantages that the cover body and the base are both metal materials, in the buckling state, the inner cover is clamped with the first segment, and the outer cover is sealed with the second segment through the sealing ring, so that the sealing effect is good, the phenomenon that cosmetic molecules penetrate to the outside of the packaging tube is avoided, and the moisturizing degree of the cosmetic is maintained.

Description

Technical Field

[0001] This application relates to the field of cosmetic packaging, and in particular to an all-metal packaging tube with airtight function. Background Technology

[0002] As consumers demand higher levels of hydration from cosmetics, existing lipsticks are gradually becoming liquid, which in turn places higher demands on the airtightness of cosmetic packaging tubes.

[0003] Currently, the overall airtightness of cosmetic packaging tubes on the market is poor, which can cause serious loss of cosmetic product. Furthermore, when cosmetic packaging tubes are made of plastic, the small molecules in the lipstick product have smaller gaps than the molecules in the plastic component. These small molecules can easily penetrate the plastic component and be discharged outside the lipstick tube, exacerbating the loss of cosmetic product. Therefore, further improvements are needed. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an all-metal packaging tube with airtight functionality.

[0005] An all-metal packaging tube with airtight function includes a base and a cover. The cover includes an inner cover and an outer cover, both made of metal, nested together. The base includes an inner bottom and an outer bottom, both made of metal, nested together. The inner bottom has an extension exposed to the outer bottom. The extension includes a first section and a second section that are separately set. The second section has a sealing ring. In the snap-fit ​​state, the inner cover is engaged with the first section, and the outer cover is sealed to the second section through the sealing ring.

[0006] 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.

[0007] Optionally, the first segment is provided with a protruding ring, and the inner cover is provided with protrusions that engage with the protruding ring.

[0008] Optionally, the outer wall of the first segment and the inner wall of the second segment are interference-fitted.

[0009] Optionally, the outer wall of the second segment is recessed to form a groove for assembling the sealing ring, and the corresponding inner wall forms an annular protrusion, with the bottom end of the first segment abutting against the annular protrusion.

[0010] Optionally, the first segment has a first limiting step flush with the top of the second segment.

[0011] Optionally, the inner wall of the first segment and the outer wall of the second segment are interference-fitted.

[0012] Optionally, the second segment is provided with a second limiting step, and the sealing ring is clamped between the bottom end of the first segment and the second limiting step.

[0013] Optionally, the top of the first segment is provided with an inward flange.

[0014] Optionally, in the snap-fit ​​state, there is a gap between the inner cover and the top of the second segment.

[0015] Optionally, a central core fixedly connected to the inner bottom is included. The central core includes a storage element for holding cosmetics, a drive element with a screw engagement, and a guide element rotatably connected to the drive element. The storage element engages with the screw engagement, and the guide element restricts the rotation of the storage element. During the relative rotation of the drive element and the guide element, the drive element drives the storage element to move axially.

[0016] This application features an airtight all-metal packaging tube, with both the cap and base made of metal. In the snap-fit ​​state, the inner cap engages with the first section, and the outer cap seals with the second section via a sealing ring, providing a good seal and preventing cosmetic molecules from penetrating outside the packaging tube, thus maintaining the moisturizing properties of the cosmetic. Attached Figure Description

[0017] Figure 1 A cross-sectional view of an all-metal packaging tube with airtight function provided in this application;

[0018] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0019] Figure 3 A schematic diagram of the structure of an all-metal packaging tube with airtight function, omitting the cap, provided for this application;

[0020] Figure 4 This is a cross-sectional view of a packaging tube with an airtight function, according to another embodiment of this application.

[0021] Figure 5 for Figure 4 Enlarged view of section B in the middle.

[0022] The annotations in the figure are explained as follows:

[0023] 100. Base; 110. Outer bottom; 120. Inner bottom; 130. Extension; 140. First section; 141. Protruding ring; 142. First limiting step; 143. Inner flange; 150. Second section; 151. Groove; 152. Annular protrusion; 153. Second limiting step; 160. Sealing ring;

[0024] 200. Cover; 210. Outer cover; 220. Inner cover; 221. Protrusion;

[0025] 300, medium beam core. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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 is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] 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.

[0030] 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.

[0031] See Figures 1-5One embodiment of this application provides an all-metal packaging tube with airtight function, including a base 100, a cover 200 and a middle core 300, wherein the cover 200 and the base 100 are interlocked to form a cavity for accommodating the middle core 300, and the middle core 300 and the base 100 are fixedly connected.

[0032] The middle core 300 can adopt an existing structure, including a storage element for holding cosmetics, a drive element with a threaded engagement (with threads on the inner wall) and a guide element rotatably connected to the drive element. The storage element engages with the threaded engagement, and the guide element restricts the rotation of the storage element. During the relative rotation of the drive element and the guide element, the drive element drives the storage element to move axially.

[0033] Because metal has good sealing properties, in order to improve the overall airtightness of the packaging tube, the cover 200 of this application includes an inner cover 220 and an outer cover 210, both made of metal and nested together, and the base 100 includes an inner bottom 120 and an outer bottom 110, both made of metal and nested together, with the inner bottom 120 having an extension 130 exposed to the outer bottom 110. The metal material involved in this application can be aluminum, iron, copper, or an alloy, etc.

[0034] In one embodiment, the extension 130 includes a first segment 140 and a second segment 150 that are separately configured (the extension 130 is made of metal and is relatively thin; due to structural and sheet forming limitations, it cannot be made as a single piece). The second segment 150 has a sealing ring 160. In the snap-fit ​​state, the inner cover 220 engages with the first segment 140, and the outer cover 210 is sealed to the second segment 150 via the sealing ring 160. That is, the outer cover 210 covers the periphery of the second segment 150. Under the action of the sealing ring 160, the outer cover 210 is sealed to the inner bottom 120, forming a sealed cavity for accommodating cosmetics. It is understood that the sealing ring 160 can be an O-ring.

[0035] For information on the interlocking mechanism, see [link to relevant documentation]. Figure 2 For example, a protruding ring 141 can be provided on the first segment 140, and a protrusion 221 that engages with the protruding ring 141 can be arranged on the inner cover 220. Of course, considering the stability of the fit, there can be multiple protrusions 221. For example, in this application, there are 3 protrusions 221, which are evenly distributed circumferentially. When the inner cover 220 engages with the first segment 140, the protrusions 221 and the protruding ring 141 are pressed against each other until they pass through the protruding ring 141 to achieve engagement.

[0036] This application features an airtight all-metal packaging tube. Both the cap 200 and the base 100 are made of metal. In the snap-fit ​​state, the inner cap 220 engages with the first section 140, and the outer cap 210 is sealed with the second section 150 through the sealing ring 160. This provides a good seal, preventing cosmetic molecules from penetrating outside the packaging tube and maintaining the moisturizing properties of the cosmetic.

[0037] See Figures 1-3 The first segment 140 and the second segment 150 are fixedly connected. Regarding the connection method, the outer wall of the first segment 140 and the inner wall of the second segment 150 can be interference-fitted. Of course, other methods such as adhesive can also be used for fixation. This application does not make any special requirements.

[0038] To facilitate the installation of the sealing ring 160, the outer wall of the second section 150 is recessed to form a groove 151 for assembling the sealing ring 160, and the corresponding inner wall forms an annular protrusion 152. The bottom end of the first section 140 abuts against the annular protrusion 152, which has axial positioning and mechanical support functions, ensuring the stability of the structure and the convenience of installation.

[0039] In one embodiment, the first segment 140 has a first limiting step 142 that is flush with the top of the second segment 150, making the overall shape more aesthetically pleasing.

[0040] See Figures 4-5 Another embodiment is provided, in which the connection method of the first segment 140 and the second segment 150 can be an interference fit between the inner wall of the first segment 140 and the outer wall of the second segment 150. Of course, other methods such as adhesive can also be used for fixation. This application does not make any special requirements.

[0041] To facilitate the installation of the sealing ring 160, the second segment 150 is provided with a second limiting step 153, and the sealing ring 160 is clamped between the bottom end of the first segment 140 and the second limiting step 153. Furthermore, the first segment 140 has a first limiting step 142, and the top end of the second segment 150 abuts against the first limiting step 142, providing an axial positioning reference and ensuring the relative positional accuracy of the first segment 140 and the second segment 150, making installation more convenient.

[0042] In one embodiment, the top of the first segment 140 is provided with an inwardly folded edge 143, which forms a protective edge through structural folding. This can prevent consumers from being cut by the metal edge during use, and at the same time, it can cover the structure between the middle core 300 and the inner bottom 120, making the overall shape more aesthetically pleasing.

[0043] See Figure 1 When the inner cover 220 is engaged, there is a gap between the top of the inner cover 220 and the second section 150. This design effectively avoids interference between the inner cover 220 and the outer cover 210 when they are sealed together.

[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. An all-metal packaging tube with airtight function, comprising a base and a cover, the cover comprising an inner cover and an outer cover, both made of metal and nested together, the base comprising an inner bottom and an outer bottom, both made of metal and nested together, the inner bottom having an extension exposed to the outer bottom, characterized in that, The extension includes a first section and a second section that are separately arranged. The second section has a sealing ring. In the snap-fit ​​state, the inner cover is engaged with the first section, and the outer cover is sealed with the second section through the sealing ring.

2. The packaging tube according to claim 1, characterized in that, The first segment is provided with a protruding ring, and the inner cover is provided with protrusions that engage with the protruding ring.

3. The packaging tube according to claim 1, characterized in that, The outer wall of the first segment and the inner wall of the second segment are interference-fitted.

4. The packaging tube according to claim 3, characterized in that, The outer wall of the second segment is recessed to form a groove for assembling the sealing ring, and the corresponding inner wall forms an annular protrusion, with the bottom end of the first segment abutting against the annular protrusion.

5. The packaging tube according to claim 3, characterized in that, The first segment has a first limiting step that is flush with the top of the second segment.

6. The packaging tube according to claim 1, characterized in that, The inner wall of the first segment and the outer wall of the second segment are interference-fitted.

7. The packaging tube according to claim 6, characterized in that, The second segment is provided with a second limiting step, and the sealing ring is clamped between the bottom end of the first segment and the second limiting step.

8. The packaging tube according to claim 1, characterized in that, The top of the first segment has an inward-curved edge.

9. The packaging tube according to claim 1, characterized in that, When engaged, there is a gap between the inner cover and the top of the second segment.

10. The packaging tube according to claim 1, characterized in that, The device includes a central core fixedly connected to the inner bottom. The central core includes a storage element for holding cosmetics, a drive element with a screw engagement, and a guide element rotatably connected to the drive element. The storage element engages with the screw engagement, and the guide element restricts the rotation of the storage element. During the relative rotation of the drive element and the guide element, the drive element drives the storage element to move axially.

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