A lipstick end-sealing structure

Abstract

This utility model relates to the field of cosmetics. A lipstick sealing structure is characterized by comprising a filling cap, the filling cap including a top in a horizontal direction and a first sidewall in a vertical direction, the first sidewall surrounding the lower part of the top, and an annular groove with a downward opening provided at the junction of the first sidewall and the top. This utility model provides a filling cap at the opening of an inclined tube, which can seal the upper opening of the inclined tube, thereby preventing lipstick material from leaking out of the upper opening of the inclined tube during filling.

Description

Technical Field

[0001] This utility model relates to the field of cosmetics, and more particularly to lipstick. Background Technology

[0002] When filling lipstick with lipstick material, the existing lipsticks have no seal at the slanted tube opening, making it easy for the lipstick material to leak out. Utility Model Content

[0003] The purpose of this invention is to provide a lipstick sealing structure to solve the above-mentioned technical problems.

[0004] The technical problem solved by this utility model can be achieved by the following technical solution:

[0005] A lipstick sealing structure, characterized in that it includes a filling cap, the filling cap including a top in a horizontal direction and a first sidewall in a vertical direction, the first sidewall surrounding the bottom of the top, and an annular groove with a downward opening provided at the junction of the first sidewall and the top.

[0006] Preferably, it also includes an inclined tube, the upper end of which is inserted into the annular groove.

[0007] Preferably, the inner side of the first sidewall is provided with a first annular protrusion in the shape of a ring, and the inclined tube has an annular groove at the position corresponding to the first annular protrusion, with the annular protrusion abutting against the annular groove.

[0008] Preferably, the cross-section of the first annular protrusion is arc-shaped.

[0009] Preferably, the filling cap further includes a second sidewall located in the vertical direction, the second sidewall surrounding the top.

[0010] Preferably, it also includes a cover, a first baffle is provided on the outer side of the second sidewall, and a second baffle is provided on the cover at the position corresponding to the first baffle. After the cover is fastened to the bottom tube, the second baffle is located below the first baffle.

[0011] Preferably, the bottom of the first baffle is flat or inclined, and the inclined surface is higher as it gets closer to the center of the filling cap.

[0012] Preferably, the outer diameter of the second sidewall gradually increases from top to bottom, then remains constant, then gradually increases again, then remains constant again, then suddenly decreases again, then remains constant again, and then gradually increases again.

[0013] Preferably, the inner diameter of the lower part of the first sidewall gradually increases from top to bottom.

[0014] Preferably, the top is arc-shaped or curved, with the opening facing downwards.

[0015] Beneficial effects: This utility model has a filling cap at the mouth of the inclined tube, which can seal the upper opening of the inclined tube, thereby preventing the lipstick material from running out from the upper opening of the inclined tube when filling the lipstick material. Attached Figure Description

[0016] Figure 1 This is a partial structural cross-sectional view of a lipstick.

[0017] Figure 2 This is a cross-sectional view of the filling cap. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0019] Reference Figure 1 and Figure 2 The lipstick includes a base tube 6, an angled tube 3, and a cap 2. The base tube 6 and cap 2 are preferably made of PP material, and the angled tube 3 is preferably made of PBT material. The lower part of the angled tube 3 is inserted into the base tube 6. The angled tube 3 and the base tube 6 are rotatably connected. Preferably, the outer side wall of the angled tube 3 has an external thread 5, and the inner side wall of the base tube 6 has an internal thread; the angled tube 3 and the base tube 6 are rotatably connected by the threads. The cap 2 covers the upper part of the angled tube 3. Preferably, the inner side wall of the lower part of the cap 2 has an internal thread, and the outer side wall of the upper part of the base tube 6 has an external thread; the cap 2 and the base tube 6 are rotatably connected by the threads, thereby enclosing the angled tube 3 inside the cap 2. A bead 4 is provided inside the angled tube 3, and the bead 4 is preferably made of PBT material. The bead divides the internal space of the lipstick into two parts: an upper cavity located above the bead and enclosed by the bead and the angled tube 3, and a lower cavity located below the bead and enclosed by the bead, the angled tube 3, and the base tube 6. The lower cavity is filled with lipstick material. A counterweight 7 may be installed at the bottom of the tube.

[0020] The lipstick may also include a filling cap 1. The filling cap 1 includes a top in the horizontal direction and a first sidewall 15 in the vertical direction. The first sidewall 15 surrounds the bottom of the top, and an annular groove 13 with a downward opening is provided at the junction of the first sidewall 15 and the top 14. The annular groove 13 is used to engage the upper port of the inclined tube 3. The inner side of the first sidewall 15 is provided with a first annular protrusion 16 in an annular shape. The first annular protrusion 16 acts as an airtight rib, thereby improving airtightness. The first annular protrusion 16 is located at the opening of the annular groove 13. The cross-section of the first annular protrusion is arc-shaped. The inclined tube 3 has an annular groove at the position corresponding to the annular protrusion, and the annular protrusion abuts against the annular groove. The top of the first sidewall 15 is connected to the top, and the inner diameter of the lower part of the first sidewall gradually increases from top to bottom, thus forming a trumpet shape to facilitate the insertion of the inclined tube 3. This invention features a filling cap 1 at the opening of the inclined tube 3. The filling cap 1 seals the upper opening of the inclined tube 3, preventing lipstick material from leaking out during filling. The top is preferably arc-shaped or curved, giving the filling cap 1 a certain degree of elasticity. The filling cap 1 also includes a second sidewall 11 located vertically, surrounding the top. A first baffle 12 is provided on the outer side of the second sidewall 11. Preferably, the bottom of the first baffle is flat or inclined; when inclined, its height increases towards the center of the filling cap 1, allowing for better cooperation with the lower second baffle. A second baffle is provided at the position corresponding to the first baffle on the cap 2. After the cap 2 is fastened onto the bottom tube 6, the second baffle is located below the first baffle, allowing the filling cap 1 to be pulled off along with the cap 2 when the cap 2 is removed. The cap 1 is permanently locked inside the cap, ensuring airtightness. The inner diameter of the lower part of the first sidewall of the filling cap 1 gradually increases from top to bottom, which facilitates the removal of the filling cap 1 along with the cap 2. Preferably, the first baffle is annular. The second baffle is also annular. The outer diameter of the second sidewall preferably increases gradually from top to bottom, then remains constant, then gradually increases again, then remains constant again, then suddenly decreases, then remains constant again, and then gradually increases again. This creates a structure with a gradually changing outer diameter at the top, which facilitates the insertion of the cap 2. At the same time, a secure locking position is formed by the suddenly decreasing portion. In addition, the top is arc-shaped or curved. When the cap 2 is not fastened, the inner sidewall of the annular groove abuts against the inner sidewall of the inclined tube 3. When the cap 2 is fastened, the second sidewall acts as a clamping head, forcing the filling cap 1 to contract inward, forcing the inner sidewall of the annular groove to no longer press tightly against the inner sidewall of the inclined tube 3, thus facilitating removal. The filling cap 1 is preferably made of PP material. This provides both support and a certain degree of deformation capability. The cap 2 is interference-fitted at the position corresponding to the filling cap 1.

[0021] The lipstick sealing structure includes a filling cap 1, and may also include an inclined tube 3 and a cap 2 that are matched with the filling cap 1.

[0022] Other issues: First, when the filling cap 1 is placed on the inclined tube 3, this invention does not require the filling tube to be completely sealed and airtight. It is sufficient to prevent the lipstick material from flowing out. Since the particles of lipstick material are much larger than air, there is no need to worry about the filling cap 1 completely sealing the inclined tube 3, preventing air from flowing out and thus preventing the lipstick material from being poured in. There is also no need to worry about insufficient sealing, resulting in the lipstick material flowing out. Second, even if the filling cap 1 completely seals the inclined tube 3 and is airtight, as long as the lipstick material flows along the side wall of the receiving cavity instead of blocking the entire receiving cavity, the receiving cavity can be used to expel air, and there is no problem of the lipstick material being unable to be poured in.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lipstick end-sealing structure, characterized in that, The filling cap includes a top in a horizontal direction and a first sidewall in a vertical direction. The first sidewall surrounds the bottom of the top, and an annular groove with a downward opening is provided at the junction of the first sidewall and the top.

2. The lipstick sealing structure according to claim 1, characterized in that, It also includes an inclined tube, the upper end of which is inserted into the annular groove.

3. The lipstick sealing structure according to claim 2, characterized in that, The inner side of the first sidewall is provided with a first annular protrusion in the shape of a ring, and the inclined tube has an annular groove at the position corresponding to the first annular protrusion, with the annular protrusion abutting against the annular groove.

4. The lipstick sealing structure according to claim 3, characterized in that, The cross-section of the first annular protrusion is arc-shaped.

5. The lipstick sealing structure according to claim 1, characterized in that, The filling cap also includes a second sidewall located in the vertical direction, the second sidewall surrounding the top.

6. The lipstick sealing structure according to claim 5, characterized in that, It also includes a cover, and a first baffle is provided on the outer side of the second sidewall. The cover is provided with a second baffle at the position corresponding to the first baffle. After the cover is fastened to the bottom tube, the second baffle is located below the first baffle.

7. The lipstick sealing structure according to claim 6, characterized in that, The bottom of the first baffle is either flat or inclined, and the inclined surface is higher as it gets closer to the center of the filling cap.

8. The lipstick sealing structure according to claim 5, characterized in that, The outer diameter of the second sidewall gradually increases from top to bottom, then remains constant, then gradually increases again, then remains constant again, then suddenly decreases again, then remains constant again, and then gradually increases again.

9. A lipstick sealing structure according to any one of claims 1-8, characterized in that, The inner diameter of the lower part of the first sidewall gradually increases from top to bottom.

10. A lipstick sealing structure according to any one of claims 1-8, characterized in that, The top is arc-shaped or curved, with the opening facing downwards.

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