Single or double head screw lift cosmetic tube general structure

Abstract

The utility model relates to a single double -end spiral lift cosmetic tube general structure, is to the poor design of the spiral structure of the prior similar product, lead to production assembly is more inconvenient, and the lipstick tube and brush tube with double -end spiral structure are less, and the single -end or double -end spiral tube structure is more difficult to be general, thereby cause production cost is higher, especially the higher mould cost technical problem. Its main point is that the outer tube of the general structure can be used as a single -end outer tube and a double -end outer tube, inner threads are arranged below the two end tube openings of the outer tube, the spiral is screwed into the inner threads arranged equidistantly on the inner wall of the outer tube through the outer threads, the fastening rib of the spiral is fixed and fastened with the fastening groove in the outer tube, the limiting rib of the spiral is flush and sealed with the step groove of the outer tube at the top of one end of the outer tube, the spiral and the outer tube are fixed and connected as a whole, the outer tube is convenient for the overall production and assembly of the single -end lipstick, single -end brush, double -end lipstick or one -end lipstick and the other end brush product in spiral type.

Description

Technical Field

[0001] This utility model relates to a single-headed or double-headed spiral cosmetic tube, which is a universal structure for single-headed or double-headed spiral lifting cosmetic tubes that facilitates the use of interchangeable components. Background Technology

[0002] Currently, spiral cosmetic tubes mainly refer to lipstick tubes. Lipstick tubes are cosmetics used for solid lipsticks, typically featuring a twist-up design where the lipstick is fixed inside the tube and the bottom is twisted to dispense it. They are mostly cylindrical or square tubes, with the cap directly snapped onto the tube. Some lipstick tubes currently employ a double-ended design, such as the utility model titled "A Double-Ended Lipstick" disclosed in Chinese patent literature (authorization announcement number CN208875500U, authorization announcement date 2019.05.21). However, the spiral structure design of the aforementioned products and similar products is suboptimal, leading to inconvenience in production and assembly. Furthermore, lipstick tubes and brush tubes with double-ended spiral structures are relatively rare (some cosmetics with a brush head at one end are lip gloss tubes). Single-ended or double-ended spiral tube structures are difficult to standardize, resulting in higher production costs, especially mold costs. Summary of the Invention

[0003] To overcome the aforementioned shortcomings, the purpose of this utility model is to provide a spiral lifting cosmetic tube that facilitates component versatility and dual-head assembly. This addresses the technical problems of existing similar products having suboptimal spiral structure designs, leading to inconvenient production and assembly, and the scarcity of double-headed spiral structures for lipstick tubes and brush tubes. Furthermore, the difficulty in universally adopting single-headed or double-headed spiral tube structures results in high production costs, particularly high mold costs. This objective is achieved through the following technical solution.

[0004] A universal structure for single and double-headed spiral lifting cosmetic tubes includes a central bundle, beads, a spiral, and an outer tube. The central bundle, beads, and spiral form a central bundle core assembly. A brush head or lipstick is installed in the groove at one end of the bead. The threaded part of the other end of the bead is screwed into the threaded hole in the middle of the spiral. The outer diameter of the grooved end of the bead is larger than the threaded part below and is polygonal. The polygonal outer diameter of the bead fits into the polygonal hole in the middle of the central bundle and is connected as a whole. The bottom hole of the central bundle is fastened and fixed to the top hole at one end of the spiral. The central bundle drives the beads inside to rotate by the outer diameter of the spiral's circumference exposed. The key structural design features an external thread on the outer diameter of the other end of the spiral. Above the external thread, the outer diameter of the spiral is sequentially equipped with engagement ribs and limiting ribs. The spiral is screwed into and fixed to the equidistant internal threads on the inner wall of the outer tube via the external thread. Simultaneously, the engagement ribs of the spiral engage with the engagement grooves inside the outer tube. The limiting ribs of the spiral are flush with and sealed to the stepped groove at the top of one end of the outer tube. The spiral and the outer tube are thus fixed and integrated. Therefore, once the spiral of the middle core assembly is screwed into the outer tube, it engages and seals the opening of the outer tube, making production and assembly more convenient.

[0005] The outer tube has stepped grooves and snap-fit ​​grooves at both ends, and internal threads are provided below the ends of both ends. Another central core assembly is provided at the bottom end of the outer tube; or a bottom cap is provided at the bottom end of the outer tube, with the internal threads on the inner wall of that end located below the bottom of the outer tube. Thus, the outer tube can be used as a single-ended or double-ended outer tube. When a bottom cap is provided at the other end, the outer tube is a single-ended outer tube; when central core assemblies are provided at both ends, the outer tube is a double-ended outer tube. Therefore, the outer tube can be used as a universal component in both single-ended and double-ended states, minimizing mold usage.

[0006] The outer diameter of the limiting rib of the spiral protrudes above the top opening of the outer tube, and the outer diameter of the spiral is provided with positioning ribs and / or snap-fit ​​ribs for fastening and fixing the outer cover. The above is a structural embodiment of the outer cover being fixed to the spiral. According to the above structural features, the top of the outer tube may also be provided with a raised outer cover step groove, and the outer cover may be fastened and fixed to the outer cover step groove of the outer tube.

[0007] The top opening of the spiral is provided with an annular groove that accommodates the polygonal outer diameter of the top of the bead.

[0008] This utility model has a reasonable structural design, is convenient to produce, use and carry, has a variety of structural forms, and has good versatility of outer tube. In particular, the outer tube is convenient for the overall production and assembly of spiral single-headed lipsticks, single-headed brushes, double-headed lipsticks or products with one end of lipstick and the other end of brush. It is suitable for use as an ultra-fine eyebrow pencil and for structural improvements of similar products. Attached Figure Description

[0009] Figure 1 This is an exploded structural diagram of Embodiment 1 of this utility model.

[0010] Figure 2 yes Figure 1 A schematic diagram of the assembled cross-sectional structure.

[0011] Figure 3 yes Figure 2 A three-dimensional structural diagram of the outer cover in the open state.

[0012] Figure 4 This is a cross-sectional view of Embodiment 2 of the present invention, in which the brush head is replaced with lipstick paste.

[0013] Figure 5 This is a cross-sectional view of Embodiment 3 of the present invention, with the brush head and lipstick paste at each end.

[0014] Figure 6 yes Figure 5 A three-dimensional structural diagram of the two outer covers in the open state.

[0015] Figure 7 This is a cross-sectional view of Embodiment 4 of the present invention, with the two ends of the figure representing lipstick paste.

[0016] Attached figures and their names: 1. Outer cover, 2. Middle section, 3. Brush head, 4. Bead, 5. Spiral, 501. External thread, 502. Snap-fit ​​rib, 503. Limiting rib, 504. Positioning rib, 505. Snap-fit ​​rib, 506. Annular groove, 6. Outer tube, 601. Internal thread, 602. Snap-fit ​​groove, 603. Step groove of outer tube, 7. Bottom cover, 8. Lipstick paste. Implementation

[0017] The structure of this utility model will now be further described with reference to the accompanying drawings. For example... Figures 1-7 As shown, the general structure includes a central bundle 2, beads 4, a spiral 5, and an outer tube 6. The central bundle, beads, and spiral form a central bundle core assembly. A brush head 3 or lipstick paste 8 is provided in the groove at one end of the bead. The threaded part of the other end of the bead is screwed into the threaded hole in the middle of the spiral. The outer diameter of the grooved end of the bead is larger than the threaded part below and is polygonal. The polygonal outer diameter of the bead fits into the polygonal hole in the middle of the central bundle and is connected as a whole. The bottom hole of the central bundle is fastened and fixed to the top hole at one end of the spiral. The central bundle drives the beads inside to rotate by the outer diameter of the spiral's circumference exposed. The outer diameter of the other end of the spiral is provided with an external thread 501. The outer diameter of the spiral above the external thread is provided with a locking rib 502 and a limiting rib 503 in sequence. The two ends of the outer tube are provided with an outer tube step groove 603 and a locking groove 602 in sequence, respectively. The lower part of the two ends of the outer tube is provided with an internal thread 601. The spiral is screwed into the internal threads that are equidistantly arranged on the inner wall of the outer tube through the external thread. At the same time, the snap-fit ​​rib of the spiral is fixedly snapped into the snap-fit ​​groove in the outer tube. The limiting rib of the spiral is flush with the stepped groove of the outer tube at the top of one end of the tube and sealed. The spiral is fixed and connected to the outer tube as a whole. Another middle core assembly is provided at the bottom tube opening at the other end of the outer tube; or a bottom cover 7 is provided at the bottom tube opening at the other end of the outer tube, and the internal threads on the inner wall of the outer tube at this end are located below the bottom of the outer tube.

[0018] The outer diameter of the limiting rib of the spiral protrudes above the top opening of the outer tube. The outer diameter of the spiral is provided with a positioning rib 504 and a snap-fit ​​rib 505 for fastening and fixing the outer cover 1. The top opening of the spiral is provided with an annular groove 506 for accommodating the polygonal outer diameter of the top of the bead.

[0019] This universal cosmetic design comes in four forms: single-ended lipstick, single-ended brush, double-ended lipstick, or lipstick with one end and a brush on the other. The outer tube is a universal component, facilitating use in all four designs without requiring replacement. To use, open the corresponding outer cap, hold the outer tube and the middle section with both hands, and rotate. The corresponding brush head or lipstick in the single-ended or double-ended design will then retract or extend via a spiral mechanism.

Claims

1. A universal structure for single and double-headed spiral lifting cosmetic tubes, the universal structure comprising a central bundle (2), beads (4), a spiral (5), and an outer tube (6), wherein the central bundle, beads, and spiral constitute a central bundle core assembly, a brush head (3) or lipstick paste (8) is provided in the groove at one end of the beads, and the threaded part at the other end of the beads is screwed into the threaded hole in the middle of the spiral, the outer diameter of the grooved end of the beads is larger than the lower threaded part and is polygonal, the polygonal outer diameter of the beads fits into the polygonal hole in the middle of the central bundle and is connected as one piece, the bottom hole of the central bundle is fastened and fixed to the top hole at one end of the spiral, and the central bundle drives the beads inside to rotate by the outer diameter of the exposed circumferential surface of the spiral; characterized in that The other end of the spiral (5) is provided with an external thread (501). The outer diameter of the spiral above the external thread is provided with a snap-fit ​​rib (502) and a limiting rib (503) in sequence. The spiral is screwed into the internal thread (601) that is fixed to the inner wall of the outer tube (6) at equal intervals. At the same time, the snap-fit ​​rib of the spiral is fixedly snapped into the snap-fit ​​groove (602) in the outer tube. The limiting rib of the spiral is flush with the outer tube step groove (603) at the top of one end of the outer tube and sealed. The spiral is fixed and connected to the outer tube as one unit.

2. The universal structure of single and double-headed spiral lifting cosmetic tube according to claim 1, characterized in that... The outer tube (6) has an outer tube stepped groove (603) and a snap-fit ​​groove (602) at both ends of the tube. The inner thread (601) is provided below the tube openings at both ends of the outer tube. Another middle core assembly is provided at the bottom tube opening at the other end of the outer tube; or the bottom tube opening at the other end of the outer tube is provided with a bottom cover (7), and the inner thread of the inner wall of the outer tube at this end is located below the bottom of the outer tube.

3. The universal structure of single and double-headed spiral lifting cosmetic tube according to claim 1, characterized in that... The upper outer diameter of the limiting rib (503) of the spiral (5) protrudes above the top opening of the outer tube (6), and the upper outer diameter of the spiral is provided with a positioning rib (504) and / or a snap-fit ​​rib (505) for fastening and fixing the outer cover (1).

4. The universal structure of single and double-headed spiral lifting cosmetic tube according to claim 1, characterized in that... The top opening of the spiral (5) is provided with an annular groove (506) for accommodating the polygonal outer diameter of the top of the bead (4).

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