Double-end eyeliner pen with replaceable refill
By designing a double-ended liquid eyeliner pen with replaceable refills, using PLA biodegradable materials and temperature-sensitive ink, the problem of unremovable stamp ink and environmental pollution is solved, improving the user experience and environmental friendliness.
Patent Information
- Application Number
- CN202520117797.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-18
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-18
AI Technical Summary
Current liquid eyeliner designs often have ink stamps that cannot be removed, resulting in a dirty-looking finish. Furthermore, the plastic pen barrels are environmentally unfriendly when discarded.
A dual-ended liquid eyeliner pen with a replaceable refill was designed. It uses PLA biodegradable material, combined with temperature-sensitive ink and a waterproof and sweatproof liquid eyeliner formula. The refill is replaceable through a threaded connection, and an arc groove is used to prevent the pen tip from contacting the face. The pen cap prevents contamination.
It enables convenient replacement of pen refills, reduces waste, improves the user experience for beginners, and uses biodegradable materials to reduce environmental impact.
Smart Images

Figure CN223873473U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cosmetic technology field especially relates to a double -end liquid eyeliner pen with replaceable core. BACKGROUND
[0002] First, the market existing liquid eyeliner pen is divided into single -head and double -head two, the first single -head straight liquid type soft head liquid eyeliner pen occupies the vast majority of market share, the second is double -head, one is eyelash seal, the other is straight liquid type soft pen point, it is the new design, and the seal ink cannot be eliminated, for the novice, the mode of printing first and then drawing is easy to make the makeup dirty, for the non - novice, the design is redundant. Both have no replacement core, and the remaining ink in the pen tube cannot be seen from the side of the pen tube, once the liquid eyeliner pen does not come out, it cannot be determined whether the ink is used up or the pen tube is blocked, which is easy to cause waste and is not enough to protect the environment. Secondly, there are two kinds of pen point designs on the market, the first is a straight pen point, which occupies the vast majority of the market, but it is not conducive to the operation of the novice, and the second is an arc pen point, which is more suitable for the curve of the eye and more friendly to the novice. In addition, the pen barrel of the liquid eyeliner pen on the market is a plastic product, which is a consumable product, and will cause certain pressure to the environment after being discarded, and is not enough to protect the environment. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at providing a double -end liquid eyeliner pen with replaceable core, which solves the problems of seal ink elimination, the mode of printing first and then drawing being easy to make the makeup dirty for the novice, the design being redundant for the non - novice, and the pen barrel of the liquid eyeliner pen being a plastic product, which is a consumable product, and will cause certain pressure to the environment after being discarded, and is not enough to protect the environment.
[0004] In order to achieve the above -mentioned purpose, the utility model provides a double -end liquid eyeliner pen with replaceable core, which comprises a pen barrel and two mounting mechanisms, the inner wall of both ends of the pen barrel is provided with a first thread, the two mounting mechanisms are arranged on the two sides of the pen barrel respectively, the mounting mechanism comprises a pen barrel, a pen core, a mounting block and a soft hair pen point, one end of the pen barrel is provided with a second thread, the pen barrel is connected with the pen barrel in a threaded mode and is located at one end of the pen barrel, the pen core is fixedly connected with the pen barrel and is located in the interior of the pen barrel, the mounting block is fixedly connected with the pen barrel and is located at one side of the pen barrel, and the soft hair pen point is fixedly connected with the mounting block and is located at one end of the mounting block.
[0005] Among them, one side of the mounting block is provided with an arc groove.
[0006] Among them, the mounting mechanism further comprises a pen cap, the pen cap is connected with the pen barrel in a sliding mode and is located at one side of the pen barrel.
[0007] The outer wall of the pen rod is provided with a first protruding ring, and the inner portion of the pen cover is provided with a second protruding ring.
[0008] The double-head liquid eyeliner pen with replaceable cores further comprises a partition plate fixedly connected with the pen barrel and located between the two cores.
[0009] The double-head liquid eyeliner pen with replaceable cores comprises a pen barrel, a pen barrel, a pen core, a mounting block, a soft bristle pen tip, a partition plate, a first thread, a second thread, an arc groove, a first protruding ring, a second protruding ring and a pen cover. BRIEF DESCRIPTION OF DRAWINGS
[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0011] Figure 1 is a structure schematic view of the double-head liquid eyeliner pen with replaceable cores of the present application.
[0012] Figure 2 is a sectional view of the double-head liquid eyeliner pen with replaceable cores of the present application.
[0013] Figure 3 is a structure schematic view of the A part of the double-head liquid eyeliner pen with replaceable cores of the present application. Figure 2
[0014] Figure 4 is a structure schematic view of the B part of the double-head liquid eyeliner pen with replaceable cores of the present application. Figure 2
[0015] 1-pen barrel, 2-pen rod, 3-pen core, 4-mounting block, 5-soft bristle pen tip, 6-partition plate, 7-first thread, 8-second thread, 9-arc groove, 10-first protruding ring, 11-second protruding ring, 12-pen cover. DETAILED DESCRIPTION
[0016] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0017] Please refer to Figures 1 to 4 The utility model provides a double -end liquid eyeliner pen with replaceable core, including pen barrel 1 and two installation mechanism, the inner wall of pen barrel 1 both ends is provided with first screw thread 7, two installation mechanism is arranged at the both sides of pen barrel 1 respectively, the installation mechanism includes pen holder 2, pen core 3, mounting block 4 and soft hair pen point 5, one end of pen holder 2 is provided with second screw thread 8, pen holder 2 is connected with pen barrel 1 by screw thread, and located one end of pen barrel 1, pen core 3 is fixedly connected with pen holder 2, and located the inside of pen barrel 1, mounting block 4 is fixedly connected with pen holder 2, and located one side of pen holder 2, soft hair pen point 5 is fixedly connected with mounting block 4, and located one end of mounting block 4.
[0018] In the embodiment, by first screw thread 7 and second screw thread 8, pen holder 2 is installed at both ends of pen barrel 1, pen core 3 is installed in the inside of pen holder 2, the inside of one side pen core 3 is equipped with temperature-sensitive ink, and the other end waterproof sweat-resistant liquid eyeliner adopts market common formula, pen holder 2 and pen tip adopt PLA biodegradable material.
[0019] Further, one side of the mounting block 4 is provided with an arc groove 9.
[0020] In the embodiment, when using, the arc groove 9 can separate the mounting block 4 and the face when the pen tip is drawing a line, preventing the mounting block 4 from contacting the face.
[0021] Further, the installation mechanism further includes a pen cap 12, the pen cap 12 is slidably connected with the pen holder 2, and located on one side of the pen holder 2.
[0022] In the embodiment, the pen cap 12 covers the outside of the pen tip, preventing the pen tip from being contaminated and damaged.
[0023] Further, the outer wall of the pen holder 2 is provided with a first protruding ring 10, the inside of the pen cap 12 is provided with a second protruding ring 11, and the first protruding ring 10 is clamped with the second protruding ring 11.
[0024] In the embodiment, when the cap 12 is installed, the first protruding ring 10 and the second protruding ring 11 are clamped with each other, and the cap 12 is fixed on one side of the pen barrel 2.
[0025] Further, the double-head eyeliner pen with replaceable core further comprises a partition plate 6, which is fixedly connected with the pen barrel 1 and located between the two pen cores 3.
[0026] In the embodiment, the partition plate 6 separates the two pen cores 3, preventing the paint inside the two pen cores 3 from being contaminated on the other pen core 3.
[0027] The above disclosure is only a preferred embodiment of the utility model, of course, cannot with this to limit the utility model right scope, the person skilled in the art can understand that all or part of the processes of the above-mentioned embodiments are implemented, and the equivalent changes made according to the utility model claim still belong to the range covered by the utility model.
Claims
1. A double-head liquid eyeliner pen with replaceable core, comprising a pen barrel, characterized in that, two mounting mechanisms are further included, the inner wall of the two ends of the pen barrel is provided with a first thread, and the two mounting mechanisms are arranged on the two sides of the pen barrel respectively; the mounting mechanism comprises a pen shaft, a pen core, a mounting block and a soft hair pen tip, one end of the pen shaft is provided with a second thread, the pen shaft is threadedly connected with the pen barrel and located at one end of the pen barrel, the pen core is fixedly connected with the pen shaft and located inside the pen barrel, the mounting block is fixedly connected with the pen shaft and located on one side of the pen shaft, and the soft hair pen tip is fixedly connected with the mounting block and located at one end of the mounting block.
2. The double-head liquid eyeliner pen with replaceable core according to claim 1, characterized in that, one side of the mounting block is provided with an arc groove.
3. The double-head liquid eyeliner pen with replaceable core according to claim 2, characterized in that, the mounting mechanism further comprises a pen cap, the pen cap is slidably connected with the pen shaft and located on one side of the pen shaft.
4. The double-head liquid eyeliner pen with replaceable core according to claim 3, characterized in that, the outer wall of the pen shaft is provided with a first protruding ring, the inside of the pen cap is provided with a second protruding ring, and the first protruding ring is clamped with the second protruding ring.
5. The double-head liquid eyeliner pen with replaceable core according to claim 4, characterized in that, the double-head liquid eyeliner pen with replaceable core further comprises a partition plate, the partition plate is fixedly connected with the pen barrel and located between the two pen cores.