Lipstick tube with good air tightness
By using the continuous annular structure of the limiting ring and positioning groove, as well as the sealing ring design, the problem of the lipstick tube cap and base easily loosening and falling off is solved, achieving a more secure connection and better airtightness.
Patent Information
- Application Number
- CN202520120855.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The existing lipstick tube has a simple connection structure between the outer cap and the base, which makes it easy for it to loosen and fall off after prolonged use, resulting in poor airtightness.
The continuous ring structure design with limiting ring and positioning groove increases the friction between the outer cover and the base, and enhances airtightness through sealing ring. Combined with the integrated molding design of threaded tube and limiting tube, it ensures a firm connection and airtightness.
It improves the connection between the outer cover and the base, reduces the risk of detachment, and significantly enhances the airtightness of the lipstick tube.
Smart Images
Figure CN223817121U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a lipstick tube technical field, concretely relates to a good air tightness lipstick tube. BACKGROUND
[0002] The lipstick tube generally includes a base, an internal rotating assembly, a lipstick holder, a lipstick outer tube and an outer cover, the internal rotating assembly is rotated forward to drive the lipstick holder to ascend, the lipstick is extended from the lipstick outer tube, the user is convenient to use, the internal rotating assembly is rotated reversely to drive the lipstick holder to descend, the lipstick is retracted into the lipstick outer tube from outside,
[0003] In the existing lipstick tube, in order to facilitate the installation and disassembly of the outer cover, the outer cover and the base are generally connected by clamping, that is, a groove is arranged at the inner bottom of the outer cover, a convex ring is arranged at the outer side of the upper end of the base, and the convex ring and the groove are clamped with each other.
[0004] However, the groove and the convex ring structure are simple and single, after long-term use or accidentally falling to the ground, they can cause loose or easy to fall off each other, the connection is not firm, and the air tightness of the whole lipstick tube is poor.
[0005] Therefore, in order to improve the connection firmness of the base and the outer cover and increase the air tightness, a good air tightness lipstick tube needs to be designed to solve the above problems. UTILITY MODEL CONTENTS
[0006] The utility model aims at designing a good air tightness lipstick tube, solving the problems that the connection structure between the existing outer cover and base is simple and single, easy to loosen and fall off after long-term use or accidentally falling to the ground, the connection between the outer cover and the base is not firm, and the air tightness is poor.
[0007] In order to realize the above utility model purposes, the utility model provides the following technical scheme:
[0008] The application discloses a lipstick tube with good air tightness, which comprises a base, an outer cover and an internal rotating assembly, the base is provided with a limiting ring in a form of a continuous annular structure which is gradually convex from top to bottom, and the inner surface of the outer cover is provided with a positioning groove which is seamlessly matched with the limiting ring; the design of the continuous annular structure makes the number of layers of the clamping between the outer cover and the base increased, and thus the friction between the outer cover and the base is increased, the connection between the outer cover and the base is more firm, the outer cover is not easy to fall off when falling to the ground, and the multi-layer seamless matching form further makes the air tightness of the lipstick tube better; the internal rotating assembly comprises a threaded tube which is installed in the base and a limiting tube which is clamped with the threaded tube, the limiting tube is internally provided with a lipstick placing seat, a screw rod which is fixed at the bottom of the lipstick placing seat extends into the threaded tube, the screw rod is threadedly connected with the threaded tube, the screw rod is limitingly inserted into the limiting tube, and a middle core tube is clamped on the outer side of the limiting tube; the base is rotated to drive the threaded tube to rotate, the screw rod is driven to rotate under the thread action, and since the limiting tube limits the screw rod, the screw rod can only be lifted or lowered, and the lipstick can be extended or retracted.
[0009] Preferably, the annular convex of the limiting ring is provided with at least two groups; the positioning groove is matched with the limiting ring one by one, and the design of the at least two groups of annular convexes makes the outer cover and the base able to be firmly connected through the clamping of the limiting ring and the positioning groove.
[0010] Preferably, the two groups of annular convexes at the lowermost side of the limiting ring are tightly sleeved with a sealing ring; the inner diameter of the sealing ring is smaller than the outer diameter of the annular convex at the upper end of the limiting ring, and the outer diameter of the sealing ring is larger than the outer diameter of the annular convex at the lower end of the limiting ring, the design of the sealing ring further increases the air tightness of the connection between the outer cover and the base; and the design of the size of the inner diameter and the outer diameter of the sealing ring makes the sealing ring not easy to fall off.
[0011] Preferably, the outer side of the base is fixed with an abutting convex ring; the bottom of the outer cover is aligned and matched with the abutting convex ring, and the design of the abutting convex ring makes the outer cover and the base closely connected.
[0012] Preferably, the lipstick placing seat is integrally formed with a lipstick fixing pin inside; the lipstick fixing pin and the lipstick placing seat are integrally formed, and the design of the fixing pin makes the lipstick paste body stably installed in the lipstick placing seat and not easy to shake off.
[0013] Preferably, the base and the threaded tube are integrally formed; the middle core tube and the limiting tube are integrally formed; and the lipstick placing seat and the screw rod are integrally formed, and the above design makes the whole lipstick tube structure simple and stable, the installation steps are fewer, and the installation is convenient and fast.
[0014] Preferably, the limiting tube has an opening inside; the outer diameter of the opening is smaller than the outer diameter of the lipstick holder, ensuring that the internal structure of the limiting tube is reasonable.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] This utility model changes the traditional single convex ring structure to a limiting ring with a continuous ring structure that gradually convexes outward from top to bottom, and designs a matching positioning groove, which increases the number of engagement layers between the outer cover and the base, increases the friction between the outer cover and the base, makes the connection between the outer cover and the base more secure, and is not easy to fall off when dropped on the ground. In addition, the multi-layer seamless bonding form, combined with the sealing ring design, makes the lipstick tube more airtight.
[0017] This utility model features an integrated design of the base and threaded tube, the core tube and the limiting tube, and the lipstick holder and the screw, which simplifies the overall structure of the device, reduces assembly steps, and makes it more convenient and faster. Attached Figure Description
[0018] Figure 1 This is a front view schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a front sectional view of the structure of this utility model;
[0020] Figure 3 This is a front sectional view of the base structure in this utility model;
[0021] Figure 4 This is a front view schematic diagram of the base structure in this utility model;
[0022] Figure 5 This is a top view of the screw in this utility model.
[0023] The diagram shows: 110, base; 111, limiting ring; 112, abutting protrusion ring; 113, threaded tube; 120, outer cover; 121, positioning groove; 210, core tube; 220, limiting tube; 221, opening; 310, lipstick holder; 311, fixing pin; 320, screw; 410, sealing ring. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0028] The embodiments of this utility model are as follows:
[0029] See Figures 1-5 As shown, a lipstick tube with good airtightness includes a base 110. The base 110 has a threaded tube 113 integrally formed inside. A screw 320 is threadedly connected to the threaded tube 113. The screw 320 passes through an opening 221 inside a limiting tube 220 and has a lipstick holder 310 integrally formed at one end. The bottom of the lipstick holder 310 abuts against the upper surface of the opening 221. A fixing pin 311 is integrally formed inside the lipstick holder 310 for fixing the lipstick. A core tube 210 is integrally formed at the top of the limiting tube 220, and the lipstick holder 310 is located inside the core tube 210.
[0030] By employing a one-piece molding design, the overall structure of the lipstick tube in this invention is reduced, resulting in fewer installation steps compared to traditional lipstick tubes. This makes the operation convenient and quick. The specific installation steps are as follows:
[0031] First, the lipstick holder 310 is inserted into the core tube 210 under the action of the screw 320, and the screw 320 passes through the opening 221 inside the limiting tube 220. Then, the whole thing is inserted into the base 110. With the screw 320 and the threaded tube 113 connected by threads, it is turned into the base 110. At this time, the bottom of the limiting tube 220 is just engaged with the top of the threaded tube 113.
[0032] The outer surface of the base 110 is provided with a limiting ring 111 with a continuous annular structure that gradually convexes outward from top to bottom. The inner side of the outer cover 120 is provided with a positioning groove 121 that fits seamlessly with the limiting ring 111. The annular convexity of the limiting ring 111 is provided in at least two sets. The positioning groove 121 matches the limiting ring 111 one by one. The traditional single convex ring structure is changed to a limiting ring 111 with a continuous annular structure that gradually convexes outward from top to bottom. The matching positioning groove 121 is designed to increase the number of engagement layers between the outer cover 120 and the base 110, increase the friction between the outer cover 120 and the base 110, make the connection between the outer cover 120 and the base 110 more secure, and make it less likely to fall off when dropped on the ground. In addition, the multi-layer seamless bonding form makes the lipstick tube more airtight.
[0033] In a further preferred embodiment, a sealing ring 410 is tightly fitted between the two sets of annular protrusions on the lowest side of the limiting ring 111; the inner diameter of the sealing ring 410 is smaller than the outer diameter of the annular protrusion at the upper end of the limiting ring 111, and the outer diameter of the sealing ring 410 is larger than the outer diameter of the annular protrusion at the lower end of the limiting ring 111. Through the design of the sealing ring 410, the airtightness of the connection between the outer cover 120 and the base 110 is further increased; and through the design of the inner and outer diameters of the sealing ring 410, the sealing ring 410 is not easy to fall off.
[0034] An abutting protrusion 112 is fixed on the outer side of the base 110; the bottom of the outer cover 120 is aligned and fitted with the abutting protrusion 112. The design of the abutting protrusion 112 makes the outer cover 120 and the base 110 tightly connected.
[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship conventionally understood by those skilled in the art. These terms are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0036] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.
Claims
1. A lipstick tube with good airtightness, characterized in that, include: The base (110) is provided with a limiting ring (111), which has a continuous ring structure that gradually convexes outward from top to bottom; Outer cover (120), the inner surface of which is provided with a positioning groove (121) that fits seamlessly with the limiting ring (111); and The internal rotating assembly includes a threaded tube (113) installed inside the base (110) and a limiting tube (220) that engages with the threaded tube (113). The limiting tube (220) has a lipstick holder (310) inside. A screw (320) fixed at the bottom of the lipstick holder (310) extends into the threaded tube (113). The screw (320) is threadedly connected to the threaded tube (113) and the screw (320) is limitedly inserted into the limiting tube (220). A core tube (210) is engaged on the outside of the limiting tube (220).
2. The lipstick tube with good airtightness according to claim 1, characterized in that, The limiting ring (111) has at least two sets of annular protrusions; the positioning groove (121) matches the limiting ring (111) one by one.
3. The lipstick tube with good airtightness according to claim 2, characterized in that, A sealing ring (410) is tightly fitted between the two sets of annular protrusions on the lowest side of the limiting ring (111); the inner diameter of the sealing ring (410) is smaller than the outer diameter of the annular protrusion at the upper end of the limiting ring (111), and the outer diameter of the sealing ring (410) is larger than the outer diameter of the annular protrusion at the lower end of the limiting ring (111).
4. The lipstick tube with good airtightness according to claim 3, characterized in that, An abutting protrusion (112) is fixed to the outer side of the base (110); the bottom of the outer cover (120) is aligned and fitted with the abutting protrusion (112).
5. The lipstick tube with good airtightness according to claim 4, characterized in that, The lipstick holder (310) has an integrally formed lipstick fixing pin (311) inside, and the lipstick fixing pin (311) and the lipstick holder (310) are integrally formed.
6. The lipstick tube with good airtightness according to claim 5, characterized in that, The base (110) and the threaded tube (113) are integrally formed; the core tube (210) and the limiting tube (220) are integrally formed; the lipstick holder (310) and the screw (320) are integrally formed.
7. The lipstick tube with good airtightness according to claim 6, characterized in that, An opening (221) is provided inside the limiting tube (220); the outer diameter of the opening (221) is smaller than the outer diameter of the lipstick holder (310).