Sliding core rod for eyebrow pencil and retractable eyebrow pencil

Abstract

The utility model relates to a kind of sliding core rod for eyebrow pencil and its telescopic eyebrow pencil, the sliding core rod includes core rod and sliding seat, and the core rod one end is equipped with the core seat of plug-in pencil core, and the other end of core rod and the one end of sliding seat form detachable ball head connection.Sliding core rod and stop block are located in pen body, and the sliding seat and pen body inner wall form directional sliding, and the inside of push-torque is fixedly connected with sliding seat, and the inside of sliding seat is equipped with sliding slot, and the bottom of sliding slot is evenly distributed with tooth muscle, and stop block is positioned in pen body and is equipped with the stop sheet with elastic deformation matched with the sliding slot of sliding seat, and the end of stop sheet is matched with tooth muscle and forms in-place self-locking.The above structure, the assembly adjustment and disassembly replacement of pencil core are more convenient, and telescopic sliding is more reliable, stable, and service life is longer.

Description

Technical Field

[0001] This utility model relates to an eyebrow pencil, specifically a sliding core for an eyebrow pencil and a telescopic eyebrow pencil. Background Technology

[0002] An eyebrow pencil is a pencil-shaped makeup tool used for drawing eyebrows. Most existing eyebrow pencils employ either a rotary telescopic lead extension mechanism or a push-twist telescopic lead extension mechanism. Push-twist telescopic lead extension involves pushing a lever, which in turn extends the lead from the tip for use. For example, Chinese patent publication CN210901839U, published on July 3, 2020, entitled "A Hand-Push Eyebrow Pencil," discloses a structure that uses a connecting bolt as a push-twist to control the lead's sliding extension within the outer casing, and then rotates the connecting bolt again to lock it in place. Another example is Chinese patent publication CN222303322U, published on January 7, 2025, entitled "A Telescopic Eyebrow Pencil," which discloses a mechanism that uses an adjustment mechanism to slide and extend the lead relative to the pencil tube, and uses a stop bar to limit the adjustment mechanism, thus achieving self-locking after it reaches its final position. While the aforementioned eyebrow pencils are retractable, they suffer from the following shortcomings: 1. Most existing eyebrow pencils use non-cylindrical leads, and the pencil tip needs to guide these leads. Therefore, the tip requires a guide hole for the lead. However, since the lead rod is usually fixed and cannot be adjusted, aligning the guide hole with the lead during installation is difficult. Installation errors often lead to significant misalignment, making retraction difficult and increasing the risk of damage or breakage. 2. Existing eyebrow pencils have a limited range of lead styles that can be connected to the lead rod, limiting the lead's functionality and making it difficult to freely replace with other styles or functions. 3. Replacing the lead requires manual handling because the lead rod is not detachable. Improper handling is unhygienic and can easily break the lead, making replacement inconvenient. Therefore, improvements to existing retractable eyebrow pencils are needed. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a sliding core for an eyebrow pencil and a telescopic eyebrow pencil thereof, thereby solving the technical problems of inconvenient core assembly and adjustment, limited core function, and inconvenient replacement of existing similar eyebrow pencils. This objective is achieved through the following technical solution.

[0004] A sliding core for an eyebrow pencil is disclosed. This sliding core serves as a telescopic sliding component of the eyebrow pencil, comprising a core rod and a sliding base. The key structural feature is that one end of the core rod has a core base for inserting the pencil lead, while the other end of the core rod forms a detachable ball joint connection with one end of the sliding base. This structure allows the core rod to rotate freely relative to the sliding base. When the core rod is connected to the pencil lead, it better fits the pencil lead guide hole in the pencil tip, facilitating installation. The pencil tip can also be rotated to adjust the pencil lead's direction, making it convenient to use. Furthermore, the core rod and pencil lead are easily detachable from the sliding base, allowing for the replacement of different types of pencil leads as needed. When replacing the pencil lead, the user does not need to touch the lead itself; they can directly hold the core rod for disassembly and assembly, reducing hand contamination and minimizing the risk of breaking the pencil lead. Pencil lead replacement is quick and convenient.

[0005] The other end of the core rod is provided with a ball head, and one end of the sliding seat is provided with a ball groove that mates with the ball head. This structure is the structure of specific implementation scheme one.

[0006] The other end of the core rod is provided with a ball groove, and one end of the sliding seat is provided with a ball head that mates with the ball groove. This structure is the structure of specific implementation scheme two. A retractable eyebrow pencil based on the aforementioned sliding core rod includes a pencil shell and a core assembly. The pencil shell includes a tip, a body, and a top seat. The bottom of the body is connected to the tip, which guides the core extension, and the top is connected to the top seat. The core assembly includes a push button, a stop block, and the sliding core rod. A sliding hole is provided on the outside of the body to accommodate the push button sliding along the linear direction of the body. The key structural feature is that the sliding core rod and the stop block are located inside the body, and the sliding seat of the sliding core rod slides directionally against the inner wall of the body. The inner end of the push button extends into the sliding hole. The sliding core is fixedly connected to the sliding base. The inner side of the sliding base has a linear groove with evenly distributed toothed ribs along the bottom of the groove. The stop block is positioned inside the pen body and located on one side of the groove of the sliding base. The stop block has an elastically deformable stop piece that mates with the groove of the sliding base, and the end of the stop piece mates with the toothed ribs. When there is no external sliding force from the push knob, the sliding core rod forms a self-locking mechanism through the toothed ribs and the stop piece. When the push knob pushes the sliding base to slide, the toothed ribs and the stop piece form a sliding tooth engagement. The above describes a specific eyebrow pencil structure using the aforementioned sliding core rod. The overall structure is relatively simple; pushing the sliding button allows for the extension and retraction of the pencil lead. Combined with the ball-head structure of the sliding core rod, the extension and retraction of the pencil lead is more stable and smooth.

[0007] The pen body has symmetrical guide grooves on both sides, and the sliding seat of the sliding core rod has sliding ribs on both sides that slide in conjunction with the guide grooves. This structure is a specific implementation structure for the sliding seat and the pen body to slide, and the sliding is relatively stable and reliable.

[0008] The inner surface of the stop block and the sliding seat of the sliding core rod form a planar sliding fit. The outer surface of the stop block fits with the arc surface of the inner wall of the pen body. One end of the pen body is provided with a limiting protrusion to limit one end of the stop block, and the other end of the pen body is limited by a fixed top seat to limit the other end of the stop block. This structure serves as a specific implementation structure for positioning the stop block and the pen body, and the positioning structure is relatively stable and reliable.

[0009] The sliding seat of the sliding core rod is provided with double insertion holes that cooperate with the push knob. The push knob is provided with double plugs that are inserted into the double insertion holes, and the ends of the double plugs form hooks, which form a hook-locking fit with the double insertion holes of the sliding seat. This structure, as a specific embodiment of the fixed connection between the push knob and the sliding seat, makes the push knob installation convenient and reliable.

[0010] The pen tip and pen body are connected by a plug-in joint and can rotate relative to each other. One end of the pen tip has a plug-in section that mates with a hole in the bottom of the pen body. The plug-in section has an annular retaining rib on its circumference. The bottom hole of the pen body has an annular retaining hole that mates with the annular retaining rib. This structure enables a quick connection between the pen body and the pen tip, and the pen tip can be rotated and adjusted, making installation and use convenient.

[0011] The pen casing includes a pen tip cap and a top seat cap. The pen tip cap fits into the pen tip, and the top seat cap fits into the top seat. The outer circumferences of the pen tip cap, pen body, and top seat cap are aligned triangular prisms. This structure provides both an aesthetically pleasing appearance and a reliable grip.

[0012] This utility model mainly improves the sliding core rod, which facilitates the assembly, adjustment, disassembly, and replacement of the pencil lead. It makes the pencil lead's telescopic sliding more stable and reliable, less prone to wear and failure, and extends its service life. It is suitable for use as a telescopic eyebrow pencil for makeup, or an improvement on the telescopic structure of similar eyebrow pencils. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the disassembled sliding core rod structure of this utility model.

[0014] Figure 2 yes Figure 1 A schematic diagram of the overall structure of the sliding core rod.

[0015] Figure 3 Is using Figure 2 A schematic diagram of the exploded structure of an eyebrow pencil with a sliding core rod.

[0016] Figure 4 yes Figure 3 A schematic diagram of the internal structure of the pen body.

[0017] Figure 5 yes Figure 3 A cross-sectional view of an eyebrow pencil.

[0018] Figure 6 yes Figure 3 A schematic diagram of the three-dimensional structure of a medium eyebrow pencil.

[0019] Figure 7 yes Figure 6 A three-dimensional structural diagram of the connection between the tip cap and the top cap of the eyebrow pencil.

[0020] The numbers and names in the diagram are as follows: 1. Core rod, 101. Core seat, 2. Sliding seat, 201. Sliding groove, 202. Tooth rib, 203. Sliding rib, 204. Double insertion hole, 3. Stop block, 301. Stop plate, 4. Pen tip, 401. Annular buckle rib, 5. Pen body, 501. Sliding hole, 502. Guide rail groove, 503. Limiting protrusion, 6. Push knob, 601. Double plug, 7. Top seat, 701. Annular rib, 8. Pen tip cap, 9. Top seat cap. Implementation

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] like Figure 1 , Figure 2 As shown, the sliding core of the eyebrow pencil includes a core 1 and a sliding seat 2. One end of the core 1 has a core seat 101 for inserting the pencil lead, and the other end of the core 1 is connected to one end of the sliding seat in a detachable ball joint connection. That is, the other end of the core 1 has a ball joint, and the one end of the sliding seat has a ball groove that mates with the ball joint; or the other end of the core 1 has a ball groove, and the one end of the sliding seat is integrated with a ball joint that mates with the ball groove.

[0023] like Figures 3-7 As shown, the eyebrow pencil includes a pencil case and a refill assembly. The pencil case includes a tip 4, a body 5, a top seat 7, a tip cap 8, and a top seat cap 9. The bottom of the body connects to the tip, which guides the refill, and the top connects to the top seat. The tip and body, as well as the top seat and body, are connected by snap-fit ​​connections. One end of the tip has a snap-fit ​​section that mates with a bottom hole in the body, and the snap-fit ​​section has an annular retaining rib 401 on its circumference. The bottom hole in the body has an annular retaining hole that mates with the retaining rib. One end of the top seat has a snap-fit ​​section that mates with a top hole in the body, and the snap-fit ​​section has an annular retaining rib 701 on its circumference. The top hole in the body has an annular retaining rib hole that mates with the retaining rib. When the eyebrow pencil is not in use, the tip cap is connected to the tip sleeve, and the top seat cap is connected to the top seat cap. The outer circumferences of the tip cap, body, and top seat cap are aligned in a triangular prism shape.

[0024] The aforementioned pen refill assembly includes a push knob 6, a sliding core rod, and a stop block 3. The pen body has a sliding hole 501 on its exterior, adapted to allow the push knob to slide along the straight direction of the pen body. The sliding core rod and the stop block are located inside the pen body. The sliding seat 2 of the sliding core rod forms a directional sliding fit with the inner wall of the pen body. Symmetrical guide grooves 502 are provided on both sides of the pen body, and sliding ribs 203 are provided on both sides of the sliding seat to slide in fit with the guide grooves. The inner end of the push knob extends into the sliding hole and is inserted and fixed to the sliding seat. Specifically, the sliding seat has double insertion holes 204 that fit with the push knob, and the push knob has double plugs 601 that fit with the double insertion holes. The ends of the double plugs form hooks, which form a hook-lock fit with the double insertion holes of the sliding seat. The inner side of the sliding seat has a straight groove 201, and toothed ribs 202 are evenly distributed along the straight direction at the bottom of the groove.

[0025] The aforementioned stop block 3 is positioned inside the pen body 5, and the inner sides of the stop block form a planar sliding fit with the opposing surfaces of the aforementioned sliding seat 2. The outer side of the stop block fits with the arc surface of the inner wall of the pen body, and a limiting protrusion 503 is provided at one end of the pen body to limit the stop block. The other end of the pen body is abutted and limited by a fixed top seat 7 against the other end of the stop block.

[0026] The aforementioned stop block 3 is provided with a stop plate 301 that has elastic deformation and cooperates with the slide groove 201 of the sliding seat 2. The end of the stop plate cooperates with the toothed rib 202. When there is no external sliding force on the push torque 6, the sliding core rod cooperates with the stop plate through the toothed rib to form a self-locking mechanism. When the push torque pushes the sliding seat to slide, a sliding tooth state is formed between the toothed rib and the stop plate.

[0027] The top seat 7 has an integrated socket for connecting tool heads at its end, which allows for easy connection of other cosmetic tools, such as brush heads, sponge heads, and curling heads, thus achieving multi-functionality.

[0028] During assembly, the sliding core rod 1 and sliding base 2 rotate to facilitate the installation of the tip 4 and body 5. The lead connected to the core rod automatically aligns with the lead guide hole in the tip, making installation convenient. When replacing the lead, simply remove the tip and detach the core rod and lead together from the sliding base. Replace with a new integrated core rod and lead; the replacement process requires no contact with the lead, is easy to apply force for installation, and is less prone to breakage. When changing to a different style of lead, simply replace the tip at the same time. In use, the lead extends and retracts by pushing or twisting in both directions. The stop block's stop plate engages with the toothed ribs in the sliding base's groove, creating effective sliding and self-locking, making it easy to use.

[0029] The above description is intended to illustrate the technical means of this utility model and is not intended to limit the technical scope of this utility model. Any obvious improvements or substitutions made to this utility model by those skilled in the art based on existing common knowledge also fall within the protection scope of the claims of this utility model.

Claims

1. A sliding core rod for an eyebrow pencil, the sliding core rod being a telescopic sliding component of the eyebrow pencil, the sliding core rod comprising a core rod (1) and a sliding base (2), characterized in that... One end of the core rod (1) is provided with a core seat (101) for inserting the pen refill, and the other end of the core rod is connected to one end of the sliding seat (2) in a detachable ball joint connection.

2. The sliding core rod for an eyebrow pencil according to claim 1, characterized in that... The other end of the core rod (1) is provided with a ball head, and one end of the sliding seat (2) is provided with a ball groove that cooperates with the ball head.

3. The sliding core rod for an eyebrow pencil according to claim 1, characterized in that... The other end of the core rod (1) is provided with a ball groove, and one end of the sliding seat (2) is provided with a ball head that cooperates with the ball groove.

4. A telescopic eyebrow pencil using the sliding core rod of claim 1, the telescopic eyebrow pencil comprising a pencil shell and a core assembly, the pencil shell comprising a tip (4), a body (5) and a top seat (7), the bottom of the body being connected to the tip guiding the core extension, and the top being connected to the top seat, the core assembly comprising a push knob (6), a stop block (3) and the aforementioned sliding core rod, and the outside of the body being provided with a sliding hole (501) adapted to the push knob sliding along the linear direction of the body; characterized in that The sliding core rod and the stop block (3) are located inside the pen body (5). The sliding seat (2) of the sliding core rod forms a directional sliding with the inner wall of the pen body. The inner end of the pusher (6) extends into the sliding hole (501) and is fixedly connected to the sliding seat. The inner side of the sliding seat is provided with a straight groove (201). The bottom of the groove is evenly distributed with toothed ribs (202) in a straight direction. The stop block is positioned inside the pen body and is located on one side of the groove of the sliding seat. The stop block is provided with a stop piece (301) with elastic deformation that cooperates with the groove of the sliding seat. The end of the stop piece cooperates with the toothed rib. When there is no external sliding force on the pusher, the sliding core rod forms a self-locking mechanism through the toothed rib and the stop piece. When the pusher pushes the sliding seat to slide, the toothed rib and the stop piece form a sliding tooth cooperation.

5. The retractable eyebrow pencil according to claim 4, characterized in that... The pen body (5) has symmetrical guide rail grooves (502) on both sides, and the sliding seat (2) of the sliding core rod has sliding ribs (203) on both sides that slide in cooperation with the guide rail grooves.

6. The retractable eyebrow pencil according to claim 4, characterized in that... The inner side of the stop block (3) and the sliding seat (2) of the sliding core rod form a planar sliding fit. The outer side of the stop block fits with the arc surface of the inner wall of the pen body (5). One end of the pen body is provided with a limiting protrusion (503) to limit one end of the stop block. The other end of the pen body is limited by a fixed top seat (7) to limit the other end of the stop block.

7. The retractable eyebrow pencil according to claim 4, characterized in that... The sliding seat (2) of the sliding core rod is provided with a double socket (204) that cooperates with the push knob (6). The push knob is provided with a double plug (601) that is plugged into the double socket. The ends of the double plug form hooks, and a hook-tight fit is formed between the hooks and the double sockets of the sliding seat.

8. The retractable eyebrow pencil according to claim 4, characterized in that... The pen tip (4) and the pen body (5) are connected by a plug-in joint and rotate relative to each other. One end of the pen tip is provided with a plug-in section that matches the bottom hole of the pen body. The plug-in section is provided with an annular buckle rib (401) on its circumference. The bottom hole of the pen body is provided with an annular buckle hole that matches the annular buckle rib.

9. The retractable eyebrow pencil according to claim 4, characterized in that... The pen casing includes a pen tip cap (8) and a top seat cap (9). The pen tip cap is fitted with the pen tip (4), and the top seat cap is fitted with the top seat (7). The outer circumferences of the pen tip cap, pen body (5), and top seat cap are aligned triangular prisms.

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