Lipstick tube

Abstract

The utility model relates to the field of cosmetics and discloses a lipstick tube. Comprising a base, the inner bottom surface of which is provided with a first matching part; the median bundle core is composed of an outer pipe and an inner pipe, a cup body is borne in the median bundle core, threads protruding out of the surface are arranged on the inner pipe, the inner pipe is matched with the threads of the cup body, a second matching part is further arranged on the inner pipe, and after the first matching part and the second matching part are clamped, the base is screwed to drive the inner pipe to rotate, so that the cup body ascends and descends. Therefore, the middle bundle core is convenient to mount, dismount and replace, and the lifting stability and accuracy of the lipstick body are also improved.

Description

Technical Field

[0001] This utility model relates to the field of cosmetics, specifically to a lipstick tube. Background Technology

[0002] Lipstick is a cosmetic used to apply to the lips to enhance lip color and shape, while also providing moisture and protection. There are many different types and textures of lipstick, and the choice of lipstick should be based on skin tone, lip condition, makeup style, and occasion.

[0003] A typical lipstick tube consists of a cap, a base, and a central core. The central core is its core component. Through the rotation of the components within it along the spiral groove of the tube, the cup holding the lipstick moves upward, allowing the lipstick to be exposed and applied to the lips.

[0004] Although the core in existing lipstick tubes can be replaced, separating and replacing the core from other parts of the lipstick tube is often a complicated process, and it also affects the smooth lifting and precise control of the lipstick. Utility Model Content

[0005] The purpose of this invention is to provide a lipstick tube to address the aforementioned shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lipstick tube, comprising:

[0008] The base has a first mating part on its inner bottom surface;

[0009] The middle core consists of an outer tube and an inner tube, which carries the cup body. The inner tube has a threaded protruding surface that engages with the cup body. The inner tube also has a second mating part. After the first mating part and the second mating part are engaged, turning the base will drive the inner tube to rotate, causing the cup body to rise and fall.

[0010] As a preferred embodiment of the present invention, the first mating part includes a vertical section and a necked section. The outer surface of the vertical section is provided with a plurality of first anti-rotation teeth distributed in an annular pattern. A first buckle is provided at the necked section, and the first buckle and the boundary between the necked section and the vertical section form an embedding groove.

[0011] As a preferred embodiment of this utility model, the first mating part is further provided with a receiving cavity.

[0012] As a preferred embodiment of the present invention, the inner tube is composed of a straight section with the thread and an expanded section with the second mating part. The second mating part consists of a plurality of second anti-rotation teeth arranged in a ring at intervals on the inner surface of the expanded section, and a second buckle located on one side of the second anti-rotation teeth, which mates with the embedded groove.

[0013] As a preferred embodiment of the present invention, the opposite ends of the first anti-rotation tooth and the second anti-rotation tooth are provided with wedge edges, and a groove is formed between two adjacent first anti-rotation teeth or second anti-rotation teeth.

[0014] As a preferred embodiment of this utility model, the outer surface of the straight section is provided with a retaining ring and a convex ring.

[0015] In a preferred embodiment of this utility model, the outer tube is divided into an upper cavity and a lower cavity by a partition. The inner contour of the lower cavity is adapted to the inner tube, and the partition restricts the inner tube. A locking groove adapted to the convex ring is provided in the lower cavity, and the locking ring abuts against the lower cavity.

[0016] As a preferred embodiment of this utility model, the cup body includes a cup base for holding the lipstick paste and a threaded tube that mates with the thread.

[0017] In a preferred embodiment of this utility model, the middle core is fitted inside the base.

[0018] As a preferred embodiment of this utility model, the lipstick tube is made of PP material.

[0019] This utility model has the following beneficial effects: by engaging the second mating part on the inner tube with the first mating part on the base, that is, by inserting the central core into the base for engagement and assembly, the inner tube can be rotated by rotating the base, so that the cup body that engages with the inner tube can move up and down. This not only makes it more convenient to install or disassemble and replace the central core, but also improves the stability and accuracy of the lipstick's lifting and lowering. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0023] Figure 3 This is a half-sectional structural diagram of the present invention.

[0024] Figure 4 This is a schematic diagram of the first mating part inside the base of this utility model.

[0025] Figure 5 This is a cross-sectional view of the outer tube of the middle core of this utility model.

[0026] Figure 6 This is a cross-sectional view of the inner tube of the middle core of this utility model.

[0027] Figure 7 This is a cross-sectional view of the lipstick tube using the inverted filling process of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Cover; 200. Base; 21. First mating part; 211. Vertical section; 2111. First anti-rotation tooth; 212. Necked section; 2121. First buckle; 2122. Embedded groove; 22. Receiving cavity; 23. Assembly space; 300. Middle core; 31. Inner tube; 311. Expanded section opening; 3111. Second buckle; 3112. Second anti-rotation tooth; 312. Straight section opening; 3121. Thread; 3122. Snap ring; 3123. Protruding ring; 32. Outer tube; 321. Upper cavity; 322. Lower cavity; 323. Partition; 324. Engaging groove; 400. Cup body; 41. Cup seat; 411. Snap plate; 42. Threaded tube. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] See Figures 1 to 6 This utility model provides a lipstick tube, including: a base 200 and a cap 100, which together form the overall appearance of the lipstick tube. A first mating part 21 is provided on the inner bottom surface of the base 200. The first mating part 21 is separated from the inner wall of the base 200 to form an assembly space 23, so that the middle core 300 can be inserted and locked in the base 200.

[0032] The first mating part 21 includes a vertical section 211 and an inwardly contracting necked section 212. The outer surface of the vertical section 211 is provided with a plurality of first anti-rotation teeth 2111 distributed in an annular pattern. A first buckle 2121 is provided at the necked section 212. The first buckle 2121 and the boundary between the necked section 212 and the vertical section 211 form an insertion groove 2122.

[0033] Furthermore, the middle core 300 is composed of an outer tube 32 and an inner tube 31, and carries a cup body 400 inside. The cup body 400 includes a cup holder 41 for holding the lipstick. Multiple retaining plates 411 are arranged in a ring around the cup holder 41. The lipstick is directly inserted into the cup opening of the cup holder 41, so that the retaining plates 411 are inserted into the lipstick and hold the lipstick in place, improving the stability of the lipstick in use. Moreover, this method of installing the lipstick is a positive filling method, which can accurately control the filling amount of the lipstick, reduce the generation of air bubbles, and facilitate automated production.

[0034] The inner tube 31 has a protruding thread 3121 that engages with the threaded tube 42 on the cup body 400. The inner tube 31 also has a second engaging part. After the first engaging part 21 engages with the second engaging part, turning the base 200 rotates the inner tube 31, causing the cup body 400 to rise and fall. At this time, the cup body 400 rotates the lipstick into or out of the cup, facilitating use. Next, when assembling the core 300, it can be used simply by inserting it into the assembly space 23. Disassembly is similar; it can be pulled out with force. Therefore, installing or removing the core 300 is very convenient. This assembly also ensures the stability and precision of the lipstick's movement, providing a better grip, smoother rotation, and more precise control over the lipstick's consistency.

[0035] The first mating part 21 is also provided with a receiving cavity 22, or in other words, it is enclosed to form a cavity. When the threaded tube 42 moves up and down, its bottom can be inserted into the receiving cavity 22. In order to ensure the rationality of the installation space of each component of the lipstick tube, the stroke of the threaded tube 42 is also extended.

[0036] Specifically, the inner tube 31 is composed of a straight section 312 with threads 3121 and an enlarged section 311 with a second mating part. The second mating part consists of a plurality of second anti-rotation teeth 3112 arranged in a ring at intervals on the inner surface of the enlarged section 311, and a second buckle 3111 located on one side of the second anti-rotation teeth 3112. The second buckle 3111 is engaged with the embedded groove 2122.

[0037] Both the first anti-rotation tooth 2111 and the second anti-rotation tooth 3112 have a wedge edge at their opposite ends, and a groove is formed between two adjacent first anti-rotation teeth 2111 or second anti-rotation teeth 3112.

[0038] When the first mating part 21 and the second mating part are engaged, especially after the inner tube 31 extends into the assembly space 23, the second anti-rotation tooth 3112 extends into the groove formed by the first anti-rotation tooth 2111, and the first anti-rotation tooth 2111 extends into the groove of the second anti-rotation tooth 3112, so that there is a first anti-rotation tooth 2111 between every two second anti-rotation teeth 3112, to ensure that when the base 200 is screwed on, the first anti-rotation tooth 2111 drives the second anti-rotation tooth 3112, that is, the inner tube 31, to rotate. Meanwhile, the opposing ends of the first anti-rotation tooth 2111 and the second anti-rotation tooth 3112 are both designed as wedges to guide them into the corresponding slots. This allows for easy assembly with a simple insert and remove. In contrast, some designs have right-angled ends, requiring the operator to repeatedly rotate the tooth to find the correct slot, which is time-consuming, laborious, and detracts from the user experience. After the first anti-rotation tooth 2111 and the second anti-rotation tooth 3112 are engaged, the outer tube 32 is tightened to engage the second latch 3111 on the inner tube 31 with the insertion groove 2122, ensuring the first and second mating parts are properly installed. Improper installation will result in different twisting sensations when the first anti-rotation tooth 2111 and the second anti-rotation tooth 3112 transmit rotational force, leading to a sluggish feel and affecting usability.

[0039] The aforementioned middle core 300 with the second anti-rotation tooth 3112 must be used in combination with the first mating part 21 with the first anti-rotation tooth 2111 before the ointment can be screwed out / screwed in. The individual parts cannot be rotated, so the ointment will not be accidentally slipped out.

[0040] The outer surface of the straight section 312 is provided with a retaining ring 3122 and a convex ring 3123. The outer tube 32 is divided into an upper cavity 321 and a lower cavity 322 by a partition 323. The inner contour of the lower cavity 322 is adapted to the inner tube 31, and the partition 323 restricts the inner tube 31. The lower cavity 322 is provided with a locking groove 324 adapted to the convex ring 3123, and the retaining ring 3122 abuts against the lower cavity 322. This makes the assembly of the inner tube 31 and the outer tube 32 relatively simple. The bottom surface of the partition 323 restricts one end face of the inner tube 31. This is not to make the inner tube 31 close to or in close contact with the base 200 or the partition 323, but to further prevent the first mating part 21 and the second mating part from disengaging. Therefore, there is a certain gap between the inner tube 31 and the base 200 or the partition 323 to ensure the smooth rotation of the inner tube 31.

[0041] The components on the lipstick tube in this embodiment are all made of PP material, which is easier to recycle and reuse, which is beneficial to environmental protection and sustainable development. In addition, it is lightweight, easy to carry, and has low production cost.

[0042] In other embodiments, see Figure 7 As shown, the lipstick tube uses a reverse filling process to assemble the lipstick. The fluid lipstick is poured from the bottom through a hollow cup 400 and then gradually rises to fill the upper part of the tube. This reduces the generation of air bubbles and gaps between the lipstick and the cup 400 during the filling process, thereby increasing the filling density of the lipstick.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lipstick tube, characterized in that, include: The base has a first mating part on its inner bottom surface; The middle core consists of an outer tube and an inner tube, which carries the cup body. The inner tube has a threaded protruding surface that engages with the cup body. The inner tube also has a second mating part. After the first mating part and the second mating part are engaged, turning the base will drive the inner tube to rotate, causing the cup body to rise and fall.

2. The lipstick tube according to claim 1, characterized in that: The first mating part includes a vertical section and a necked section. The outer surface of the vertical section has a plurality of first anti-rotation teeth distributed in an annular pattern. A first buckle is provided at the necked section, and the first buckle and the boundary between the necked section and the vertical section form an embedding groove.

3. The lipstick tube according to claim 2, characterized in that: The first mating part is also provided with a receiving cavity.

4. The lipstick tube according to claim 2, characterized in that: The inner tube is composed of a straight section with the thread and an expanded section with the second mating part. The second mating part consists of a plurality of second anti-rotation teeth arranged in a ring at intervals on the inner surface of the expanded section, and a second buckle located on one side of the second anti-rotation teeth, which mates with the embedded groove.

5. The lipstick tube according to claim 4, characterized in that: Both the first anti-rotation tooth and the second anti-rotation tooth have a wedge edge at their opposite ends, and a groove is formed between two adjacent first anti-rotation teeth or second anti-rotation teeth.

6. The lipstick tube according to claim 4, characterized in that: The outer surface of the straight section is provided with a retaining ring and a raised ring.

7. The lipstick tube according to claim 6, characterized in that: The outer tube is divided into an upper cavity and a lower cavity by a partition. The inner contour of the lower cavity is adapted to the inner tube, and the partition restricts the inner tube. The lower cavity is provided with a locking groove adapted to the convex ring, and the locking ring abuts against the lower cavity.

8. The lipstick tube according to claim 1, characterized in that: The cup body includes a cup base for holding the lipstick paste and a threaded tube that mates with the thread.

9. The lipstick tube according to claim 1, characterized in that: The middle core is fitted inside the base.

10. The lipstick tube according to claim 1, characterized in that: The lipstick tube is made of PP material.

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