Lipstick case based on high-rigidity high-molecular material of rotary oil-free structure

Abstract

This utility model relates to a lipstick casing made of a high-rigidity polymer material based on a rotary oil-free structure, belonging to the field of cosmetics. The lipstick casing includes a bottom shell, a sleeve, a cap, and a limiting structure. An inner tube is fixed to the top of the bottom shell, and the sleeve is rotatably fitted onto the outside of the inner tube. The outer wall of the inner tube has a spiral hole, and the inner wall of the sleeve has a vertical guide groove. When the cap is closed, the limiting strip can be sequentially inserted into the side limiting groove on the outer wall of the sleeve and the bottom limiting groove on the top of the bottom shell, thereby limiting the relative rotation between the bottom shell and the sleeve and preventing accidental damage to the lipstick due to contact with the top. Furthermore, an inner shell is threaded to the bottom of the bottom shell. The top of the cap has a heart-shaped protrusion, and the bottom of the inner shell has a matching heart-shaped groove, facilitating the use of the limiting strip to push the bottom piece embedded in the casing after disassembly, pushing out any remaining lipstick and ensuring full utilization of the lipstick. This structure effectively improves reliability and reduces waste.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic technology, and in particular to lipstick casings based on high-rigidity polymer materials with a rotary oil-free structure. Background Technology

[0002] Currently, most lipsticks on the market use a rotating lifting mechanism to control the expansion and contraction of the lipstick. This type of structure has some drawbacks. Firstly, when the outer casing is closed, accidental contact with the bottom rotating component can cause the lipstick to move upwards, pressing against the inner wall of the casing and causing damage or contamination. Secondly, as the lipstick is used up, some residue remains inside the tube. Some users remove this residue for continued use, but the current product design often makes it inconvenient to remove, resulting in some waste. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies, such as lack of limiting and difficulty in removing residual lipstick, by proposing a lipstick casing based on a high-rigidity polymer material with a rotary oil-free structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The lipstick casing, based on a high-rigidity polymer material with a rotary oil-free structure, includes the lipstick itself and also includes:

[0006] A bottom shell, the top of which is fixedly connected to an inner tube;

[0007] A sleeve is rotatably fitted around the outer circumference of the inner tube. A spiral hole is formed on the outer circumferential wall of the inner tube, and an axial vertical guide groove is formed on the inner circumferential wall of the sleeve. An insert shell is slidably disposed inside the inner tube along its axial direction. A guide rod is fixedly disposed on the outer circumferential wall of the insert shell. The outer end of the guide rod passes through the spiral hole and extends into the vertical guide groove. The bottom end of the lipstick is installed inside the insert shell.

[0008] The cover is detachably fitted onto the outer periphery of the sleeve;

[0009] An L-shaped limiting strip is provided on the top of the shell cover. Its horizontal section is embedded in the groove on the top of the shell cover, and its vertical section extends downward and is close to the inner peripheral wall of the shell cover. An axial side limiting groove is provided on the outer peripheral wall of the sleeve, and a bottom limiting groove is provided on the top of the bottom shell.

[0010] When the shell cover is closed, the vertical section of the limiting strip can be inserted into the side limiting groove and the bottom limiting groove in sequence to restrict the relative rotation between the bottom shell and the sleeve.

[0011] In one possible design, the bottom of the base shell is fitted with an inner shell, the bottom of the inner shell has a connecting groove, the top of the shell cover is fixedly provided with a connecting pattern, the bottom of the fitted shell has a through hole, and a base plate is provided inside the fitted shell, the base plate being supported on the bottom of the lipstick body.

[0012] In one possible design, the connecting pattern is a heart-shaped protrusion, and the connecting groove is a heart-shaped recess that matches the heart-shaped protrusion.

[0013] In one possible design, the inner shell and the bottom shell are connected by threads.

[0014] In one possible design, the cover and the sleeve are connected by a snap-fit ​​structure.

[0015] In one possible design, the lipstick casing is made of polyphenylene sulfide.

[0016] In this application, during actual use, the user holds the sleeve with one hand and twists the bottom shell with the other. The bottom shell will drive the inner tube inside to rotate, thereby changing the connection point between the spiral hole and the vertical guide groove, thereby driving the mounting shell to move up and down, thereby driving the lipstick to be raised and lowered for use.

[0017] When the lipstick is retracted to the bottom of the inner tube, the side limiting groove and the bottom limiting groove will be in a connected state. When the shell is closed at this time, the vertical section of the limiting strip will be inserted into the side limiting groove and move downward until it is locked. At this time, the bottom end of the limiting strip will be inserted into the bottom limiting groove. The bottom shell and the sleeve will not be able to rotate relative to each other, thus avoiding accidental rotation when the shell is closed, which would cause the lipstick to rise and hit the top inner wall of the shell and cause damage.

[0018] When the lipstick that has leaked out is used up, and you want to remove the remaining part inside the casing, align the connecting pattern on the top of the casing with the connecting groove on the bottom of the casing. Then, you can rotate the inner casing by twisting the casing to remove it. Next, pull out the limiting strip hidden inside the casing, let it pass through the bottom of the casing and contact the bottom plate through the through hole. Then, put your finger inside the bottom plate and press the limiting strip to push the bottom plate to move, thus pushing out the remaining lipstick directly.

[0019] In this utility model, the lipstick shell based on a high-rigidity polymer material with a rotary oil-free structure has an anti-misrotation mechanism. When the shell is closed, the limiting strip on the inner wall will cooperate with the side limiting groove and the bottom limiting groove to form a locking mechanism when the shell is closed, so as to prevent rotation and damage to the lipstick inside.

[0020] In this invention, the lipstick case based on a high-rigidity polymer material with a rotary oil-free structure has a detachable structure that allows for easy removal of residual lipstick, facilitating its reuse and reducing waste.

[0021] In this invention, the internal components can be effectively prevented from rotating during use, avoiding unnecessary damage. The inner shell at the bottom can be disassembled, making it easy to remove residual lipstick for reuse. The overall shell is similar to that of a traditional lipstick, ensuring its aesthetic appeal while improving its actual usability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of the lipstick casing based on a high-rigidity polymer material with a rotary oil-free structure proposed in this utility model.

[0023] Figure 2 This is a schematic diagram of the unfolded structure of the lipstick casing based on a high-rigidity polymer material with a rotary oil-free structure proposed in this utility model.

[0024] Figure 3 This is an exploded top view of the lipstick casing based on a high-rigidity polymer material with a rotary oil-free structure proposed in this utility model.

[0025] Figure 4 This is an exploded, upward-view schematic diagram of the lipstick casing based on a high-rigidity polymer material with a rotating, oil-free structure, as proposed in this utility model.

[0026] In the diagram: 1. Bottom shell; 2. Shell cap; 3. Sleeve; 4. Lipstick paste; 5. Side limiting groove; 6. Spiral hole; 7. Bottom limiting groove; 8. Guide rod; 9. Embedded shell; 10. Base plate; 11. Limiting strip; 12. Embedded groove; 13. Connecting pattern; 14. Inner shell; 15. Through hole; 16. Connecting groove; 17. Inner tube. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] In one embodiment: Reference Figure 1-3 The shell includes a main structure consisting of a bottom shell 1 and a shell cover 2.

[0029] The top of the bottom shell 1 is fixedly connected to the inner tube 17. The outer wall of the inner tube 17 is provided with a spiral hole 6 along the axial direction. The sleeve 3 is rotatably sleeved on the outer wall of the inner tube 17, and the inner wall is provided with a vertical guide groove along the axial direction. The shell cover 2 is sleeved and snapped onto the outer wall of the sleeve 3.

[0030] The insert shell 9 is slidably disposed inside the inner tube 17 along its axial direction. A guide rod 8 is fixedly connected to the outer wall of the insert shell 9, and the end of the guide rod 8 extends into the vertical guide groove through the spiral hole 6. When the bottom shell 1 is rotated, the inner tube 17 drives the spiral hole 6 to rotate, and the guide rod 8 generates axial displacement at the intersection of the spiral hole 6 and the vertical guide groove, driving the insert shell 9 to move axially along the inner tube 17, thereby causing the lipstick paste 4, which is embedded inside the insert shell 9 at its bottom end, to move upward.

[0031] The top of the cover 2 is provided with a groove 12. An L-shaped limiting strip 11 is inserted into the groove 12 with its horizontal section, and its vertical section extends into the interior of the cover 2 and fits against its inner wall. The outer wall of the sleeve 3 is provided with a side limiting groove 5, and the bottom of the side limiting groove 5 and the bottom limiting groove 7 opened on the top of the bottom cover 1 form a continuous channel. When the cover 2 is closed, the vertical section of the limiting strip 11 will be inserted into the interior of the side limiting groove 5 and move downward, and the bottom end will be inserted into the bottom limiting groove 7. This prevents the cover 2 from rotating accidentally when it is closed, which would cause the lipstick 4 to rise and hit the top inner wall of the cover 2, causing damage.

[0032] This application can be used in the field of cosmetics, or in other fields applicable to this application.

[0033] In another embodiment: Reference Figure 3-4 This lipstick case, based on a high-rigidity polymer material with a rotary, oil-free structure, is applied in the cosmetics industry. The bottom of the base shell 1 has a threaded inner shell 14. The bottom of the inner shell 14 has a recessed heart-shaped connecting groove 16, which mates with the raised connecting pattern 13 on the top of the cover 2, serving as both a connecting structure and ensuring aesthetics. When it is necessary to remove residual lipstick, the connecting pattern 13 is aligned with the connecting groove 16 and rotated to separate the inner shell 14. Then, the retaining strip 11 hidden inside the cover 2 is snapped out, and the base plate 10 and residual lipstick can be pushed out through the through hole 15.

[0034] The shell is made entirely of PPS (polyphenylene sulfide), which gives it a certain degree of hardness, making it less prone to deformation, and its low moisture absorption prevents deformation caused by environmental humidity.

[0035] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-rigidity high-molecular material lipstick case based on a rotary oil-free structure, comprising a lipstick body (4), characterized in that, Also includes: Bottom shell (1), the top of which is fixedly connected to an inner tube (17). The sleeve (3) is rotatably sleeved on the outer periphery of the inner tube (17). The outer periphery wall of the inner tube (17) is provided with a spiral hole (6). The inner periphery wall of the sleeve (3) is provided with an axial vertical guide groove. The inner tube (17) is slidably provided with an insert shell (9) along its axial direction. The outer periphery wall of the insert shell (9) is fixedly provided with a guide rod (8). The outer end of the guide rod (8) passes through the spiral hole (6) and extends into the vertical guide groove. The bottom end of the lipstick paste (4) is installed in the insert shell (9). The cover (2) is detachably fitted around the outer periphery of the sleeve (3); An L-shaped limiting strip (11) is provided on the top of the shell cover (2). Its horizontal section is embedded in the groove (12) on the top of the shell cover (2), and its vertical section extends downward and is close to the inner peripheral wall of the shell cover (2). An axial side limiting groove (5) is provided on the outer peripheral wall of the sleeve (3), and a bottom limiting groove (7) is provided on the top of the bottom shell (1). When the shell cover (2) is closed, the vertical section of the limiting strip (11) can be inserted into the side limiting groove (5) and the bottom limiting groove (7) in sequence to restrict the relative rotation between the bottom shell (1) and the sleeve (3).

2. The lipstick case according to claim 1, wherein The bottom shell (1) is fitted with an inner shell (14), and the bottom of the inner shell (14) is provided with a connecting groove (16). The top of the shell cover (2) is fixedly provided with a connecting pattern (13). The bottom of the embedded shell (9) is provided with a through hole (15). The interior of the embedded shell (9) is provided with a base plate (10), and the base plate (10) is supported on the bottom of the lipstick paste (4).

3. The lipstick case according to claim 2, wherein The connecting pattern (13) is a heart-shaped protrusion, and the connecting groove (16) is a heart-shaped groove that matches the heart-shaped protrusion.

4. The lipstick case according to claim 2, wherein The inner shell (14) and the bottom shell (1) are connected by threads.

5. The lipstick case according to claim 1, wherein The cover (2) and the sleeve (3) are connected by a snap-fit ​​structure.

6. The lipstick case according to claim 1, wherein The lipstick casing is made of polyphenylene sulfide.

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