Push-to-turn eyebrow pencil

Abstract

This utility model relates to a push-button eyebrow pencil, which includes a pencil shell and a refill assembly. The pencil shell includes a pencil tip, a pencil body, and a top seat. The refill assembly includes a push button, a refill rod, and a stop block. The refill rod and the stop block are located inside the pencil body. One end of the refill rod has a refill hole seat for inserting the refill, and the other end has a sliding seat. The inner end of the push button extends into a sliding hole in the pencil body and is fixedly connected to the sliding seat. The inner side of the sliding seat has a sliding groove with evenly distributed toothed ribs at the bottom. The stop block is positioned inside the pencil body and has a stop piece that cooperates with the sliding groove of the sliding seat. The end of the stop piece cooperates with the toothed ribs. When there is no external sliding force on the push button, the refill rod forms a self-locking mechanism through the cooperation of the toothed ribs and the stop piece. When the push button pushes the sliding seat to slide, the toothed ribs and the stop piece form a sliding tooth cooperation. This design eliminates the need to press the button; simply pushing the button allows the refill to extend or retract, making it convenient to use. Furthermore, the stop block and stop piece provide reliable sliding limits, preventing misalignment and failure, and ensuring a reliable and stable self-locking effect.

Description

Technical Field

[0001] This utility model relates to an eyebrow pencil, specifically a push-twist type 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 lead extension mechanism. The push-twist mechanism involves pushing a lever, which in turn extends the lead from the tip. 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. Clearly, this locking structure is inconvenient to use, requiring repeated tightening of the connecting bolt. 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. However, a drawback is that the adjustment mechanism requires pressing a button each time it is used. Frequent pressing can cause the spring beneath the button to fatigue and fail, potentially resulting in the eyebrow pencil losing its self-locking effect after a period of use. Therefore, improvements to the existing push-button eyebrow pencil are needed. Summary of the Invention

[0003] To overcome the aforementioned shortcomings, the purpose of this utility model is to provide a push-twist eyebrow pencil that solves the technical problems of inconvenient use, poor structural reliability, and easy failure with frequent use in existing similar eyebrow pencils. This objective is achieved through the following technical solution.

[0004] A push-twist eyebrow pencil includes a pencil shell and a refill 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 refill to extend, and the top is connected to the top seat. The refill assembly includes a push-twist, a refill rod, and a stop block. The outer side of the body has a sliding hole adapted to allow the push-twist to slide along the linear direction of the body. The key structural feature is that the refill rod and the stop block are located inside the body. One end of the refill rod has a refill hole for inserting the refill, and the other end has a sliding seat that forms a directional sliding contact with the inner wall of the body. The inner end of the push-twist extends into the sliding hole. The pen refill is fixedly connected to a sliding base. The inner side of the sliding base has a linear groove with evenly distributed toothed ribs along its bottom. 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 engages with the toothed ribs. When there is no external sliding force from the push button, the refill rod self-locks through the toothed ribs and the stop piece. When the push button moves the sliding base, the toothed ribs and the stop piece engage with each other. With this structure, the pen refill can be extended or retracted simply by pushing, eliminating the need to press a button. This makes it convenient to use. Furthermore, the stop block and stop piece provide reliable sliding limits with the sliding base and groove. The movement direction of the stop piece is reliable and less prone to skew failure, resulting in a reliable and stable self-locking effect.

[0005] The pen body has symmetrical guide grooves on both sides, and the sliding seat of the 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.

[0006] The inner surface of the stop block and the sliding seat of the 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.

[0007] The stop plate of the stop block is inclined. When the inclined stop plate engages with the toothed rib in the sliding groove of the sliding seat, the force of the pusher pushing the sliding seat towards the pen tip is less than the force of the pusher pushing the sliding seat towards the top seat. This structure makes it easier to extend the pen refill, while requiring more force to retract it into the pen body, ensuring the stability of the pen refill during use.

[0008] The stop block has at least two stop plates spaced apart. This structure improves the reliability of the self-locking mechanism.

[0009] The sliding seat of the core rod is provided with double insertion holes that mate with the push knob, and the push knob is provided with double plugs that are interference-fitted with the double insertion holes. This structure is a specific embodiment of the push knob and the sliding seat being fixedly connected.

[0010] The sliding seat of the 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 with each other, forming a hook-locking fit between the opposing hooks and the double insertion holes of the sliding seat. This structure is another specific embodiment of the fixed connection between the push knob and the sliding seat.

[0011] The pen tip and pen body, as well as the top seat and pen body, are connected by snap-fit ​​connections. One end of the pen tip has a snap-fit ​​section that mates with a bottom hole in the pen body, and the snap-fit ​​section has annular ribs on its circumference. The bottom hole in the pen body has annular holes that mate with these ribs. Similarly, one end of the top seat has a snap-fit ​​section that mates with a top hole in the pen body, and the snap-fit ​​section has annular ribs on its circumference. The top hole in the pen body has annular rib holes that mate with these ribs. This structure allows for quick connection between the pen body, pen tip, and top seat, making installation relatively convenient.

[0012] The top end is integrated with a socket for attaching tool heads. This structure allows for easy connection of other cosmetic tools, such as brushes and sponges, to the top end.

[0013] 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. This structure provides effective protection for the pen tip and the top seat.

[0014] The overall structure of this utility model is relatively simple, and it is easy to assemble and operate. The extension and sliding of the pencil lead is relatively stable and reliable, not easy to wear and fail, and has a long service life. It is suitable for use as an eyebrow pencil in cosmetics, or as an improvement on the structure of similar eyebrow pencils. Attached Figure Description

[0015] Figure 1 This is an exploded structural diagram of the present invention.

[0016] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the core rod.

[0017] Figure 3 yes Figure 1 A schematic diagram of the internal structure of the pen body.

[0018] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0019] Figure 5 yes Figure 4 A schematic diagram of the improved structure of the push-torsion mechanism.

[0020] Figure 6 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 7 This is a three-dimensional structural diagram of the connection between the pen tip cap and the top seat cap of this utility model.

[0022] The numbers and names in the diagram are as follows: 1. Pen tip, 101. Annular rib, 2. Pen body, 201. Sliding hole, 202. Guide rail groove, 203. Limiting protrusion, 3. Top seat, 301. Annular rib, 302. Insert, 4. Core rod, 401. Core hole seat, 402. Sliding seat, 403. Sliding groove, 404. Tooth rib, 405. Sliding rib, 5. Stop block, 501. Stop plate, 6. Push knob, 601. Double plug, 602. Hook, 7. Pen tip cap, 8. Top seat cap. Implementation

[0023] The present invention will now be further described with reference to the accompanying drawings.

[0024] like Figures 1 to 7 As shown, this push-twist eyebrow pencil includes a pencil case and a refill assembly. The pencil case includes a tip 1, a body 2, a top seat 3, a tip cap 7, and a top seat cap 8. 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 101 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 rib 301 on its circumference. The top hole in the body has an annular 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 for dust and water protection.

[0025] The aforementioned pen refill assembly includes a pusher 6, a refill rod 4, and a stop block 5. The pen body 2 has a sliding hole 201 on its exterior, adapted to allow the pusher to slide along the straight direction of the pen body. The refill rod and stop block are located inside the pen body. One end of the refill rod has a refill hole seat 401 for inserting the refill, forming a clamping opening for holding the refill. The other end of the refill rod has a sliding seat 402 that slides directionally against the inner wall of the pen body. Symmetrical guide grooves 202 are provided on both sides of the inner wall of the pen body. Sliding ribs 405 that slide in cooperation with the guide grooves are provided on both sides of the sliding seat of the refill rod. The inner end of the pusher extends into the sliding hole and is fixedly inserted into the sliding seat. Specifically, the sliding seat of the refill rod has double insertion holes that cooperate with the pusher. The pusher has a double plug 601 that is interference-fitted with the double insertion holes, or the interference-fitted double plug is replaced by hooks 602 formed at opposite ends, creating a hook-locking fit between the opposing hooks and the double insertion holes of the sliding seat. The inner side of the aforementioned sliding seat is provided with a straight groove 403, and the bottom of the groove is evenly distributed with toothed ribs 404 along a straight direction.

[0026] The aforementioned stop block 5 is positioned inside the pen body 2, and the inner sides of the stop block form a planar sliding fit with the sliding seat 402 of the core rod 4. The outer side 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 203 to limit one end of the stop block, and the other end of the pen body is abutted and limited by a fixed top seat 3.

[0027] The aforementioned stop block 5 is provided with a stop piece 501 that has elastic deformation and cooperates with the slide groove 403 of the sliding seat 402. The end of the stop piece cooperates with the toothed rib 404. When the push torque 6 has no external sliding force, the core rod 4 forms a self-locking mechanism through the cooperation of the toothed rib and the stop piece. When the push torque pushes the sliding seat to slide, a sliding tooth state is formed between the toothed rib and the stop piece.

[0028] For ease of use, the stop plate 501 of the stop block 5 can also be inclined. When the inclined stop plate cooperates with the toothed rib 404 in the slide groove 403 of the sliding seat 402, the force of pushing the sliding seat towards the pen tip 1 is less than the force of pushing the sliding seat towards the top seat 3. Therefore, when the eyebrow pencil is used, the lead is less likely to retract, making it more reliable to use.

[0029] To improve the anti-slip self-locking effect of the stop block 5, the stop plate 501 of the stop block can also be set with two or more spaced intervals.

[0030] The top seat 3 has an integrated insertion port 302 at its end for connecting tool heads. This port allows for easy connection to other cosmetic tools, such as brush heads, sponge heads, and curling heads, thus enabling multi-functionality.

[0031] When using this eyebrow pencil, simply push the push knob 6 in both directions to extend and retract the pencil lead. The stop plate 501 of the stop block 5 cooperates with the toothed rib 404 of the inner groove 403 of the sliding seat 402 to form an effective sliding tooth and self-locking mechanism, making it convenient and reliable to use.

[0032] 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 push twist eyebrow pencil, the pencil comprising a pencil shell and a pencil core assembly, the pencil shell comprising a pencil tip (1), a pencil body (2) and a top base (3), the pencil body connecting the pencil tip at the bottom where the pencil core extends out, and connecting the top base at the top, the pencil core assembly comprising a push twist (6), a core rod (4) and a stopper (5), the pencil body being provided with a sliding hole (201) on the outside of the pencil body, which is suitable for the push twist to slide in a straight line direction of the pencil body; characterized in that The core rod (4) and the stop block (5) are located inside the pen body (2). One end of the core rod is provided with a core hole seat (401) for inserting the pen core, and the other end is provided with a sliding seat (402) that forms a directional sliding with the inner wall of the pen body. The inner end of the pusher extends into the sliding hole (201) and is fixedly connected to the sliding seat. The inner side of the sliding seat is provided with a straight groove (403), and the bottom of the groove is evenly distributed with toothed ribs (404) 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 (501) with elastic deformation that cooperates with the groove of the sliding seat. The end of the stop piece cooperates with the toothed ribs. When there is no external sliding force on the pusher, the core rod forms a self-locking mechanism through the toothed ribs and the stop piece. When the pusher pushes the sliding seat to slide, the toothed ribs and the stop piece form a sliding tooth cooperation.

2. The push-twist eyebrow pencil according to claim 1, characterized in that... The pen body (2) has symmetrical guide rail grooves (202) on both sides, and the sliding seat (402) of the core rod (4) has sliding ribs (405) on both sides that slide in cooperation with the guide rail grooves.

3. The push-twist eyebrow pencil according to claim 1, characterized in that... The inner side of the stop block (5) and the sliding seat (402) of the core rod (4) 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 (2). One end of the pen body is provided with a limiting protrusion (203) to limit one end of the stop block. The other end of the pen body is limited by a fixed top seat (3) to limit the other end of the stop block.

4. The push-twist eyebrow pencil according to claim 1, characterized in that... The stop plate (501) of the stop block (5) is inclined. When the inclined stop plate cooperates with the toothed rib (404) in the slide groove (403) of the sliding seat (402), the force of the pusher (6) pushing the sliding seat to slide towards the pen tip (1) is less than the force of the pusher pushing the sliding seat to slide towards the top seat (3).

5. The push-twist eyebrow pencil according to claim 1, characterized in that... The stop block (5) has at least two stop pieces (501) spaced apart.

6. The push-twist eyebrow pencil according to claim 1, characterized in that... The sliding seat (402) of the core rod (4) is provided with a double socket that cooperates with the push knob (6), and the push knob is provided with a double plug (601) that is interference-fitted with the double socket.

7. The push-twist eyebrow pencil according to claim 1, characterized in that... The sliding seat (402) of the core rod (4) is provided with a double socket 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 plugs form hooks (602) opposite each other, and a hook-tight fit is formed between the opposite hooks and the double socket of the sliding seat.

8. The push-twist eyebrow pencil according to claim 1, characterized in that... The pen tip (1) and the pen body (2), as well as the top seat (3) and the pen body, are connected by a snap-fit ​​connection. One end of the pen tip is provided with a snap-fit ​​section that mates with the bottom hole of the pen body. The periphery of the snap-fit ​​section is provided with an annular snap rib (101). The bottom hole of the pen body is provided with an annular snap hole that mates with the annular snap rib. One end of the top seat is provided with a snap-fit ​​section that mates with the top hole of the pen body. The periphery of the snap-fit ​​section is provided with an annular rib (301). The top hole of the pen body is provided with an annular rib hole that mates with the annular rib.

9. The push-twist eyebrow pencil according to claim 1, characterized in that... The top seat (3) has an integrated insertion port (302) for inserting tool heads at its end.

10. The push-twist eyebrow pencil according to claim 1, characterized in that... The pen casing includes a pen tip cap (7) and a top seat cap (8). The pen tip cap is fitted with the pen tip (1), and the top seat cap is fitted with the top seat (3).

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