Cosmetic container

Abstract

The utility model discloses a cosmetic container. The cosmetic container includes a lid and a median core. The cover is provided with a first inner cavity with a circumferential surface and a top surface, and the median bundle core is suitable for being inserted into the first inner cavity. The median bundle core comprises a median bundle tube and a bead assembly. At least part of the circumferential side wall of the middle beam tube is suitable for being in sealing contact with the circumferential surface of the first inner cavity, the bead assembly is arranged in the middle beam tube and suitable for reciprocating motion in the axial direction of the middle beam tube, and the bead assembly is in sliding sealing contact with the inner surface of the circumferential side wall of the middle beam tube. According to the cosmetic container, when the lipstick is not used, the lipstick material body is stored in the containing cavity defined by the cover, the middle beam tube and the bead assembly. The accommodating cavity is isolated from the external environment, so that the volatile components of the lipstick material body are prevented from continuously volatilizing to the surrounding environment, and the quality of the lipstick material body is further prevented from being quickly degraded.

Description

Technical Field

[0001] The present application relates to the technical field of cosmetics, and in particular to a cosmetic container. Background Art

[0002] The lipstick material is contained in the lipstick container. Generally, the lipstick container includes a core and a lid, and the lipstick material is carried by the core. When the lipstick is not in use, the lid is placed on the core to store the lipstick material in the containing chamber surrounded by the lid and the core. However, the sealing of the containing chamber surrounded by the lid and the core is poor, which causes the volatile components of the lipstick material to continuously volatilize into the external environment, thereby causing the quality of the lipstick material to deteriorate rapidly. Utility Model Content

[0003] In view of the above technical problems, the present application proposes a cosmetic container. The cosmetic container comprises: a cover, the cover is configured with a first inner cavity, the first inner cavity has a circumferential surface and a top surface; and a center beam core, the center beam core is suitable for being inserted into the first inner cavity, and the center beam core comprises: a center beam tube, at least part of the circumferential side wall of the center beam tube is suitable for sealing contact with the circumferential surface of the first inner cavity; and a bead assembly, the bead assembly is arranged inside the center beam tube and is suitable for reciprocating along the axial direction of the center beam tube, and the bead assembly is in sliding sealing contact with the inner surface of the circumferential side wall of the center beam tube.

[0004] In one embodiment, a circumferentially extending rib is configured on one of the outer surface of the circumferential sidewall of the center beam tube and the circumferential surface of the first inner cavity, and the rib is interference fit with the other of the outer surface of the circumferential sidewall of the center beam tube and the circumferential surface of the first inner cavity.

[0005] In one embodiment, the protruding height of the rib is between 0.1 mm and 0.2 mm.

[0006] In one embodiment, the convex rib is constructed on the circumferential surface of the first inner cavity; the axial length of the first inner cavity is between 70 mm and 71 mm, and the distance between the convex rib and the top surface of the first inner cavity is between 7 mm and 10 mm.

[0007] In one embodiment, a metal coating is disposed on the circumferential surface and the top surface of the first inner cavity.

[0008] In one embodiment, the bead assembly includes: a bead body having a first mating surface that is slidably mated with the inner surface of the circumferential side wall of the center tube; and a first sealing ring that is arranged on the first mating surface and is in slidable sealing contact with the inner surface of the circumferential side wall of the center tube.

[0009] In one embodiment, the cosmetic container further comprises a base assembly, the base assembly being configured with a second inner cavity for carrying the center bundle core; the center bundle tube axially extends out from the second inner cavity, and the first end of the center bundle tube is located in the second inner cavity, and the second end is located outside the second inner cavity; at least a portion of the base assembly is adapted to be inserted into the first inner cavity and to be in sealing contact with a circumferential surface of the first inner cavity.

[0010] In one embodiment, the base assembly includes: a base body, a second inner cavity is constructed in the base body, and the base body has a second mating surface that slides with the circumferential surface of the first inner cavity; and a second sealing ring, which is arranged on the second mating surface and is suitable for sliding sealing contact with the circumferential surface of the first inner cavity.

[0011] In one embodiment, the first inner cavity axially includes a first section and a second section connected to the first section; the inner diameter of the first section is larger than the inner diameter of the second section to form a stop step between the first section and the second section; the base assembly is suitable for cooperating with the first section and abutting against the stop step axially; and the center beam tube is suitable for cooperating with the second section.

[0012] In one embodiment, the second mating surface of the base body is configured with a plurality of protrusions protruding outward, the plurality of protrusions are evenly distributed along the circumference and deviate from the second sealing ring; the plurality of protrusions are interference fit with the circumferential surface of the first inner cavity.

[0013] In one embodiment, the middle beam core also includes a driving assembly, which includes: a threaded member, which is fixedly installed in the second inner cavity of the base assembly; an axially extending assembly hole is constructed in the threaded member, and an internal thread is constructed on the circumferential surface of the assembly hole; a straightening sleeve, which is sleeved on the threaded member and is suitable for rotating relative to the threaded member; a non-circular straightening hole is constructed on the straightening sleeve, and the straightening hole is aligned with the assembly hole; the first end of the middle beam tube is fixedly connected to the straightening sleeve; and a support rod, the first end of the support rod is constructed with a guide slider matching the internal thread; the support rod extends axially from the inside of the assembly hole through the straightening hole, so that the second end of the support rod is fixedly connected to the bead assembly, and the guide slider cooperates with the internal thread and is suitable for sliding along the internal thread.

[0014] The beneficial effects of the present application are as follows: According to the cosmetic container of the present application, when the lipstick is not in use, the lipstick material is stored in the storage chamber surrounded by the lid, the middle bundle tube and the bead assembly. The circumferential side wall of the middle bundle tube is in sealed contact with the circumferential surface of the first inner cavity, and the bead assembly is also in sealed contact with the inner surface of the circumferential side wall of the middle bundle tube, so that the storage chamber is isolated from the external environment. The volatile components of the lipstick material in the storage chamber cannot be continuously volatilized into the surrounding environment, which helps to preserve the lipstick material well for a long time and avoid the rapid deterioration of the quality of the lipstick material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present application will be further described in the following detailed description by means of non-limiting examples of typical embodiments of the present application based on a number of drawings, which are not drawn to scale.

[0016] Figure 1 A cosmetic container according to one embodiment of the present application is schematically shown.

[0017] Figure 2 An axial cross-section of a cosmetic container is schematically shown.

[0018] Figure 3 A cross-sectional view of the mid-beam core and base assembly is schematically shown.

[0019] Figure 4 A cross-sectional view of the lid is shown schematically.

[0020] Figure 5 A cross-sectional view of a bead assembly is schematically shown, showing the support rods.

[0021] Figure 6 yes Figure 2 Magnified view of part A in FIG.

[0022] Reference numerals list

[0023] 1. Cosmetic container

[0024] 11 Accommodation Chamber

[0025] 2 Lid

[0026] 20 first inner cavity 21 outer cover

[0027] 22 Inner cover

[0028] 201 top surface 203 circumferential surface of the first inner cavity

[0029] 211 first section 212 second section

[0030] 213 rib 214 stop step

[0031] 3 medium beam cores

[0032] 31 Middle beam tube

[0033] 311 The first end of the bundle tube 312 The second end of the bundle tube

[0034] 313 Circumferential side wall of the bundle tube

[0035] 32 Bead Assembly

[0036] 321 first sealing ring 322 first matching surface

[0037] 323 bead body

[0038] 33 drive components

[0039] 331 threaded part 332 straightening sleeve

[0040] 333 support rod 334 assembly hole

[0041] 335 Straightening hole 336 First end of the support rod

[0042] 337 second end of the support rod 338 guide slide block

[0043] 339 internal thread

[0044] 4 Base assembly

[0045] 41 base body 413 second mating surface

[0046] 42 second sealing ring

[0047] Z1 Axial upward direction Z2 Axial downward direction DETAILED DESCRIPTION

[0048] To make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0049] In the present application, the cosmetic material may be a lipstick material or other stick-shaped objects used for makeup. For simplicity, the lipstick material is used as an example to describe the technical solution of the present application. The directional term "up" refers to the direction in which the lipstick material moves out of the middle bundle tube when the lipstick is used; the directional term "down" refers to the direction opposite to "up". The term "axial" refers to the direction of the central axis of a cylindrical or annular member.

[0050] Figure 1 The cosmetic container 1 according to one embodiment of the present application is schematically shown. The cosmetic container 1 includes a cover 2 and a core 3. Figure 4 As shown, the cover 2 may include an outer cover 21 and an inner cover 22 disposed inside the outer cover 21. The inner cover 22 is provided with a first inner cavity 20. The first inner cavity 20 is generally cylindrical, and has an open lower end and a closed upper end. Thus, the first inner cavity 20 has a circumferential surface 203 and a top surface 201. It should be understood that the cover 2 may also be a single-layer structure, which will not be described in detail here. Figure 2 As shown, the middle beam core 3 is suitable for being inserted into the first inner cavity 20. The middle beam core 3 comprises a middle beam tube 31 and a bead assembly 32.

[0051] like Figure 3 As shown, the middle beam tube 31 is generally cylindrical and has a first end 311, a second end 312 above the first end 311, and a circumferential side wall 313. After the middle beam core 3 is inserted into the first inner cavity 20, at least a portion of the circumferential side wall 313 of the middle beam tube 31 is in sealing contact with the circumferential surface 203 of the first inner cavity 20.

[0052] The bead assembly 32 is disposed inside the center tube 31 and is adapted to reciprocate along the axial direction of the center tube 31. The bead assembly 32 is in sliding and sealing contact with the inner surface of the circumferential side wall 313 of the center tube 31.

[0053] According to the cosmetic container 1 of the present application, the bead assembly 32 is used to carry the lipstick material (not shown in the figure). The middle beam tube 31 helps to keep the lipstick material in a columnar shape for easy use by the user. When using lipstick, the bead assembly 32 is moved in the axially upward direction Z1 relative to the middle beam tube 31; the lipstick material moves axially upward with the movement of the bead assembly 32 until part of the lipstick material moves out of the middle beam tube 31. When the lipstick is not in use, the bead assembly 32 and the lipstick material are moved in the axially downward direction Z2 relative to the middle beam tube 31 until the lipstick material moves to the inside of the middle beam tube 31.

[0054] In addition, when the lipstick is not in use, after the middle bundle core 3 is inserted into the first inner cavity 20 of the cover 2, the lipstick material is stored in the accommodating chamber 11 surrounded by the cover 2, the middle bundle tube 31 and the bead assembly 32. Since the gap between the circumferential side wall 313 of the middle bundle tube 31 and the circumferential surface 203 of the first inner cavity 20 is sealed, and the gap between the circumferential side wall 313 of the middle bundle tube 31 and the bead assembly 32 is also sealed, the accommodating chamber 11 is isolated from the external environment. In this way, the volatile components of the lipstick material in the accommodating chamber 11 cannot continuously volatilize into the surrounding environment, which helps to preserve the lipstick material well for a long time, and the quality of the lipstick material will not deteriorate quickly.

[0055] like Figure 6 As shown, a circumferentially extending rib 213 is configured on the circumferential surface 203 of the first inner cavity 20 (or the circumferential inner surface of the inner cover 22). After the middle beam core 3 is inserted into the first inner cavity 20, the rib 213 is interference fit with the outer surface of the circumferential side wall 313 of the middle beam tube 31, thereby achieving a sealed contact between the middle beam tube 31 and the circumferential surface 203 of the first inner cavity 20. Moreover, when the middle beam core 3 is inserted into the first inner cavity 20, the user can clearly hear the "click" sound generated when the rib 213 and the middle beam tube 31 are matched, which can help the user determine whether the cover 2 and the middle beam core 3 (or the middle beam tube 31) are properly matched.

[0056] In addition, after the middle bundle core 3 is inserted into the first chamber 20, due to the interference fit between the convex ribs 213 and the circumferential side wall 313 of the middle bundle tube 31, the cover 2 is not easy to be separated from the middle bundle core 3 unless the user pulls the cover 2 off the middle bundle core 3. In this way, when the user carries the lipstick, the cover 2 will be stably matched with the middle bundle core 3 to protect the lipstick material.

[0057] In other embodiments, the convex ribs 213 may also be constructed on the outer surface of the circumferential side wall 313 of the center beam tube 31 , which will not be described in detail herein.

[0058] Optionally, the protruding height of the convex rib 213 is between 0.1 mm and 0.2 mm. According to this structure, the convex rib 213 can not only ensure that the circumferential side wall 313 of the middle bundle tube 31 is in sealed contact with the circumferential surface 203 of the first inner cavity 20, but also when the middle bundle core 3 is inserted into the first inner cavity 20, the resistance is small, which is convenient for users.

[0059] Optionally, the length of the first inner cavity 20 along the axial direction is between 70 mm and 71 mm, and the distance between the convex rib 213 and the top surface 201 of the first inner cavity 20 is between 7 mm and 10 mm. From the overall view of the cover 2, the convex rib 213 is close to the top surface 201 of the first chamber 20. According to this structure, when the middle beam core 3 is inserted into the first inner cavity 20 of the cover 2, the middle beam tube 31 is sealed and contacted with the convex rib 213 only after a longer portion is inserted into the first inner cavity 20 (for example, when the middle beam tube 31 is nearly inserted into place). Before this, the middle beam tube 31 is not in contact with the convex rib 213, so that the air in the first chamber 20 is discharged as much as possible, thereby reducing the insertion resistance of the middle beam core 3. In addition, according to this structure, after the middle beam core 3 is inserted into the first inner cavity 20, the volume of the accommodating chamber 11 is small, which helps to reduce the volatilization amount of the volatile components of the lipstick material stored in the accommodating chamber 11.

[0060] It should be understood that, under the premise of ensuring interference fit between the convex rib 213 and the circumferential side wall 313 of the middle bundle tube 31 , the distance from the convex rib 213 to the top surface 201 of the first inner cavity 20 can be set as small as possible to further reduce the volume of the accommodating chamber 11 .

[0061] Furthermore, a metal coating (not shown) is provided on the circumferential surface 203 and the top surface 201 of the first inner cavity 20. The material of the metal coating is denser than the material of the cover 2 (e.g., the inner cover 22 and the outer cover 21), which helps to further improve the airtightness of the accommodating chamber 11, thereby helping to reduce the volatilization of the volatile components of the lipstick material to the external environment. In addition, when the inner cover 22 and the outer cover 21 are transparent, the shiny metallic luster of the metal coating can be seen from the outside of the cosmetic container 1, which helps to improve the aesthetics of the cosmetic container 1.

[0062] In one embodiment, the material of the metal coating is aluminum, and the thickness of the aluminum coating is between 0.01 mm and 0.05 mm. Of course, the material of the metal coating can also be other metals, and the thickness of the coating can also be changed according to actual conditions, which will not be repeated here.

[0063] like Figure 5 As shown, the bead assembly 32 includes a bead body 323 and a first sealing ring 321. The bead body 323 has a first mating surface 322 that is slidably matched with the inner surface of the circumferential side wall 313 of the middle bundle tube 31. For example, the bead body 323 is configured as a cylindrical groove, so as to be slidably arranged in the middle bundle tube 31 and to be suitable for carrying the lipstick material. The outer surface of the circumferential side wall of the cylindrical groove forms the first mating surface 322.

[0064] Also like Figure 2 and Figure 5 As shown, the first sealing ring 321 is arranged on the first mating surface 322 and is in sliding sealing contact with the inner surface of the circumferential side wall 313 of the middle bundle tube 31. This realizes the sliding sealing contact between the bead assembly 32 and the inner surface of the circumferential side wall 313 of the middle bundle tube 31. In one embodiment, the material of the first sealing ring 321 is nitrile rubber. The chemical properties of nitrile rubber are relatively stable, and it is not easy to chemically react with the volatile components of the lipstick body and is not easy to age, which enables the first sealing ring 321 to play a good sealing role for a long time. Of course, the first sealing ring 321 can also be made of other suitable materials (for example, thermoplastic elastomer rubber, etc.), which will not be repeated here.

[0065] Also like Figure 2 and Figure 3 As shown, the cosmetic container 1 further includes a base assembly 4, and the base assembly 4 is used to carry the middle bundle core 3. Specifically, as Figure 3 As shown, the base assembly 4 includes a base body 41, a second inner cavity is constructed in the base body 41, the middle bundle tube 31 extends axially upward from the second inner cavity, and the first end 311 of the middle bundle tube 31 is located in the second inner cavity, and the second end 312 is located outside the second inner cavity. From the overall view of the cosmetic container 1, the base assembly 4 is axially below the middle bundle tube 31.

[0066] Also like Figure 2 As shown, at least a portion of the base component 4 is adapted to be inserted into the first inner cavity 20 of the cover 2, and at least a portion of the base component 4 is in sealing contact with the circumferential surface 203 of the first inner cavity 20. For example, as shown in FIG. Figure 2 and Figure 3As shown, the base body 41 has a second mating surface 413 that is slidably mated with the circumferential surface 203 of the first inner cavity 20, so that the base body 41 can be inserted into the first inner cavity 20. The base assembly 4 also includes a second sealing ring 42. The second sealing ring 42 is arranged on the second mating surface 413 and is suitable for sliding and sealing contact with the circumferential surface 203 of the first inner cavity 20, thereby achieving a sealed contact between the base assembly 4 and the circumferential surface 203 of the first inner cavity 20. According to this structure, the gap between the circumferential side wall 313 of the middle bundle tube 31 and the circumferential surface 203 of the first inner cavity 20 is doubly sealed (i.e., sealed by the second sealing ring 42 and the convex rib 213 described above), so that the accommodating chamber 11 is more tightly isolated from the external environment, which helps to further prevent the volatile components of the lipstick material from volatilizing to the external environment. In addition, when the seal between one of the center tube 31 and the base assembly 4 (or the base body 41) and the circumferential surface 203 of the first inner cavity 20 fails, the seal between the other of the center tube 31 and the base assembly 4 (or the base body 41) and the circumferential surface 203 of the first inner cavity 20 can play a compensatory role to ensure that the accommodating chamber 11 is isolated from the external environment.

[0067] In one embodiment, the material of the second sealing ring 42 is the same as that of the first sealing ring 321 , which will not be described in detail herein.

[0068] like Figure 4 As shown, the first inner cavity 20 includes a first section 211 and a second section 212 along the axial direction. The second section 212 is above the first section 211 and connected to the first section 211. The inner diameter of the first section 211 is greater than the inner diameter of the second section 212, so as to form a stop step 214 between the first section 211 and the second section 212.

[0069] Combination Figure 2 and Figure 4 , the base body 41 is suitable for sliding cooperation with the first section 211 and the end of the base body 41 facing the second section 212 is suitable for abutting against the stop step 214, and the second sealing ring 42 is in sealing contact with the circumferential surface of the first section 211. The center beam tube 31 is suitable for cooperating with the second section 212. According to this structure, after the center beam core 3 and the base assembly 4 are inserted into the first inner cavity 20, the base assembly 4 will be blocked by the stop step 214 and will not move excessively in the axial direction toward the inside of the first inner cavity 20, so that the center beam tube 31 will not move excessively in the axial direction toward the inside of the first inner cavity 20. This helps to prevent the second end 312 of the center beam tube 31 from forcibly contacting the top surface 201 of the first inner cavity 20, thereby causing damage to the center beam tube 31 and / or the center beam core 3. In one embodiment, as Figure 2 As shown, the stopping step 214 is arranged in the first inner cavity 20 so that there is an appropriate gap between the second end 312 of the center beam tube 31 and the top surface 201 of the first inner cavity 20 .

[0070] In one embodiment, the base body 41 is configured to be conical, and the small end of the cone faces the center beam tube 31. Accordingly, the inner surface of the first section 211 of the first inner cavity 20 is configured to be in a shape matching the cone. In this way, as the base assembly 4 is inserted into the first section 211, the base body 41 and the first section 211 are more and more closely engaged, which helps to make the second sealing ring 42 seal and contact the circumferential surface of the first inner cavity 20 (or the first section 211).

[0071] In one embodiment, a plurality of outwardly protruding protrusions (not shown in the figure) are constructed on the second mating surface 413 of the base body 41. These protrusions are evenly distributed along the circumference and deviate from the second sealing ring 42. For example, these protrusions are located below the second sealing ring 42 along the axial direction. After the base assembly 4 is inserted into the first inner cavity 20, these protrusions are interference-fitted with the circumferential surface 203 of the first inner cavity 20 (or the first section 211). These protrusions also make it difficult for the cover 2 to be detached from the base assembly 4 and the middle beam core 3 unless the user pulls the cover 2 off the base assembly 4 and the middle beam core 3. It should be understood that while the protrusions are interference-fitted with the circumferential surface 203 of the first inner cavity 20 (or the first section 211), the ribs 213 on the circumferential surface 203 of the first inner cavity 20 are also interference-fitted with the circumferential side wall 313 of the middle beam tube 31.

[0072] Also like Figure 2 As shown, the middle beam core 3 further includes a driving assembly 33, and the driving assembly 33 is used to drive the bead assembly 32 to reciprocate along the axial direction of the middle beam tube 31. Figure 3 As shown, the driving assembly 33 includes a threaded member 331 , a stabilizing sleeve 332 and a support rod 333 .

[0073] The screw member 331 is fixedly installed in the second inner cavity of the base body 41 and is configured with an axially extending assembly hole 334. An internal thread 339 is configured on the circumferential surface of the assembly hole 334.

[0074] The stabilizing sleeve 332 is sleeved on the threaded member 331 and is suitable for rotating relative to the threaded member 331. The stabilizing sleeve 332 is configured with a non-circular stabilizing hole 335, and the stabilizing hole 335 is aligned with the assembly hole 334. The first end 311 of the center beam tube 31 is fixedly connected to the stabilizing sleeve 332. In one embodiment, the stabilizing hole 335 is rectangular.

[0075] The first end 336 of the support rod 333 is configured with a guide slider 318 that matches the internal thread 339. The support rod 333 is configured to extend axially from the inside of the assembly hole 334 through the straightening hole 335, so that the second end 337 of the support rod 333 is fixedly connected to the bead body 323 (for example, the support rod 333 can be integrally formed with the bead body 323), and the guide slider 318 is matched with the internal thread 339 and is suitable for sliding along the internal thread 339. In one embodiment, the cross-sectional shape of the support rod 333 is also rectangular, so as to be suitable for passing through the straightening hole 335, and is constrained by the straightening hole 335 and cannot rotate.

[0076] When using the lipstick, one hand can hold the middle bundle tube 31 so that the stabilizing sleeve 332 fixedly connected to the middle bundle tube 31 cannot rotate; the other hand can rotate the base assembly 4 in the first direction. The screw member 331 rotates synchronously with the base assembly 4, and the internal thread 339 on the screw member 331 pushes the guide slider 318 to move. In this way, the support rod 333 only moves upward along the axial direction of the middle bundle tube 31 under the push of the guide slider 318 and the constraint of the stabilizing hole 335, and the bead body 323 connected to the support rod 333 also moves upward along the axial direction of the middle bundle tube 31, so that the lipstick material moves upward axially from the inside of the middle bundle tube 31.

[0077] When the lipstick is not in use, one hand can still hold the middle bundle tube 31, and the other hand can rotate the base assembly 4 in a second direction opposite to the first direction. In this way, the support rod 333 only moves downward along the axial direction of the middle bundle tube 31 under the push of the guide slider 318 and the constraint of the straightening hole 335, and the bead body 323 also moves downward along the axial direction of the middle bundle tube 31, so that the lipstick material body moves axially downward into the middle bundle tube 31.

[0078] It should be understood that the first direction and the second direction can be determined according to actual conditions, which will not be elaborated here.

[0079] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A cosmetic container, characterized in that: The cosmetic container comprises: a cover configured with a first interior cavity having a peripheral surface and a top surface; and A middle beam core, the middle beam core is suitable for being inserted into the first inner cavity, and the middle beam core comprises: a center beam tube, at least a portion of a circumferential side wall of the center beam tube being adapted to be in sealing contact with a circumferential surface of the first inner cavity; and A bead assembly is disposed inside the center beam tube and is adapted to reciprocate along the axial direction of the center beam tube. The bead assembly is in sliding sealing contact with the inner surface of the circumferential side wall of the center beam tube.

2. The cosmetic container according to claim 1, characterized in that: A circumferentially extending rib is configured on one of the outer surface of the circumferential side wall of the center bundle tube and the circumferential surface of the first inner cavity. The rib is interference fit with the other of the outer surface of the circumferential side wall of the center bundle tube and the circumferential surface of the first inner cavity.

3. The cosmetic container according to claim 2, characterized in that: The protruding height of the convex rib is between 0.1 mm and 0.2 mm.

4. The cosmetic container according to claim 2 or 3, characterized in that: The convex rib is constructed on the circumferential surface of the first inner cavity; the axial length of the first inner cavity is between 70 mm and 71 mm, and the distance between the convex rib and the top surface of the first inner cavity is between 7 mm and 10 mm.

5. The cosmetic container according to claim 2 or 3, characterized in that: A metal coating is provided on the circumferential surface and the top surface of the first inner cavity.

6. The cosmetic container according to claim 1, characterized in that: The bead assembly comprises: a bead body, the bead body having a first mating surface that is slidably mated with the inner surface of the circumferential side wall of the center beam tube; and A first sealing ring is disposed on the first matching surface and is in sliding sealing contact with an inner surface of a circumferential side wall of the center bundle tube.

7. The cosmetic container according to claim 1, characterized in that: The cosmetic container further comprises a base assembly, wherein the base assembly is configured with a second inner cavity for carrying the middle beam core; the middle beam tube axially extends out from the second inner cavity, and a first end of the middle beam tube is located in the second inner cavity, and a second end of the middle beam tube is located outside the second inner cavity; At least a portion of the base assembly is adapted to be inserted into the first internal cavity and to be in sealing contact with a circumferential surface of the first internal cavity.

8. The cosmetic container according to claim 7, characterized in that: The base assembly comprises: a base body, in which the second inner cavity is configured, and the base body has a second mating surface that is slidably mated with a circumferential surface of the first inner cavity; and A second sealing ring is disposed on the second mating surface and is adapted to be in sliding sealing contact with a circumferential surface of the first inner cavity.

9. The cosmetic container according to claim 7, characterized in that: The first inner cavity includes a first section and a second section connected to the first section along the axial direction; the inner diameter of the first section is greater than the inner diameter of the second section, so as to form a stop step between the first section and the second section; The base assembly is suitable for cooperating with the first section and abutting against the stop step along the axial direction; the middle beam tube is suitable for cooperating with the second section.

10. The cosmetic container according to claim 8, characterized in that: The second mating surface of the base body is configured with a plurality of protrusions protruding outward, the plurality of protrusions are evenly distributed along the circumference and deviate from the second sealing ring; the plurality of protrusions are interference fit with the circumferential surface of the first inner cavity.

11. The cosmetic container according to claim 7, characterized in that: The middle beam core further includes a driving assembly, and the driving assembly includes: A threaded member, the threaded member is fixedly mounted in the second inner cavity of the base assembly; an axially extending assembly hole is configured in the threaded member, and an internal thread is configured on the circumferential surface of the assembly hole; a stabilizing sleeve, the stabilizing sleeve being sleeved on the threaded member and being adapted to rotate relative to the threaded member; a non-circular stabilizing hole being configured on the stabilizing sleeve, the stabilizing hole being aligned with the assembly hole; a first end of the center beam tube being fixedly connected to the stabilizing sleeve; and A support rod, wherein the first end of the support rod is constructed with a guide slider matching the internal thread; the support rod extends axially from the inside of the assembly hole through the straightening hole, so that the second end of the support rod is fixedly connected to the bead assembly, and the guide slider cooperates with the internal thread and is suitable for sliding along the internal thread.

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