Cosmetic pen with multi-color inner core

Abstract

The makeup pen comprises a pen point, a pen body, a rotating core support, a core rod and a pen core, a cylindrical hole is formed in the pen body, the rotating core support is arranged in the cylindrical hole, the bottom of the rotating core support and the pen point are limited, core rod sliding grooves matched with the core rod in a sliding mode are evenly formed in the circumferential face of the rotating core support in an array mode, and the bottom of the core rod is fixedly connected with the pen core. An operation part is arranged at the top of the core rod; a long-strip-shaped sliding groove is formed in the outer side of the pen body, a sliding button is arranged in the long-strip-shaped sliding groove, and a lap joint part matched with the operation part in a lap joint mode is arranged at the inner end of the sliding button. The inner end of the rotary knob is connected with the top of the rotary core bracket to form coupling rotation. In the switching use process, the sliding button is located at the top end of the long-strip-shaped sliding groove, the refill rotating support is rotated till the lap joint portion of the sliding button is in lap joint fit with the operation portion of the top of the needed refill rod, the refill at the bottom of the refill rod is opposite to the refill outlet hole of the pen point, at the moment, the sliding button slides, the sliding button drives the needed refill to stretch out, and use is rapid and convenient.

Description

Technical Field

[0001] This utility model relates to cosmetic products, specifically a makeup pen containing a multi-colored inner core. Background Technology

[0002] Currently, makeup pencils, including eyebrow pencils, eyeliner pencils, and lip pencils, are mainly used for makeup application. Existing makeup pencils are typically single-core structures, meaning they contain only a single lead. If you need to apply makeup, you need to prepare multiple pencils of different colors, which is relatively inconvenient to carry. To overcome this problem, existing patents, such as the Chinese patent publication CN208909210U (authorization announcement date May 31, 2019), entitled "A Novel Three-Color Eyeliner Pen," disclose a structure similar to existing three-color ballpoint pens. It features three sliding springs, each corresponding to one of the three colors of the lead. When needed, pressing one of the sliding springs ejects the corresponding lead. While this structure allows for multi-color switching, the overall structure remains complex, requiring three sets of sliding springs and overcoming spring resistance, thus still presenting some inconvenience in use. Similar makeup pens, such as the one published in Chinese patent literature (CN209073645U, authorized on July 9, 2019, utility model titled "A Push-Type Eyebrow Pencil"), also employ independent multi-set lead-out structures, arranged side-by-side. This significantly impacts the grip and makes them inconvenient to carry and use. Therefore, improvements to the existing structural designs of makeup pens are needed. Summary of the Invention

[0003] To overcome the aforementioned shortcomings, the purpose of this utility model is to provide a makeup pen with a multi-colored inner core, thereby solving the technical problems of existing makeup pens having a relatively complex structure, large size, and inconvenience in carrying and using. This objective is achieved through the following technical solution.

[0004] A makeup pen containing multi-colored inner cores includes a pen shell and a core assembly. The pen shell includes a pen tip and a pen body. The pen tip is fixed to the bottom of the pen body and has a core ejection hole inside. The core assembly includes a rotating core support, a core rod, and a core. The key structural feature is that the pen body has a cylindrical hole inside, within which the rotating core support is disposed. The bottom of the rotating core support abuts against and limits the pen tip. The circumference of the rotating core support is evenly arrayed with core rod grooves adapted for sliding engagement with the core rod, and the sliding direction of the core rod is parallel to the axial direction of the rotating core support. The bottom of the core rod is fixedly connected to the core, and the top of the core rod has an operating part. The outer side of the pen body has an elongated groove along its length, and the outer side of the pen body has a sliding button that slides into the elongated groove. The inner end of the sliding button has an overlapping part that engages with the operating part. The top of the pen body is fitted with a rotating knob for positioning. The inner end of the knob is connected to the top of the rotating core bracket to form a coupling for rotation. The cylindrical hole of the pen body is provided with a limiting flange that forms an axial limit for the operating part of the core rod that does not overlap with the inner end of the knob. After axial limiting, all core rods in the cylindrical hole are at the same height. When the knob is located at the top of the elongated groove, and the rotating core bracket rotates relative to the pen body, the overlapping part of the knob and the operating part at the top of each core rod of the rotating core bracket form an alternating overlapping engagement. When the overlapping part of the knob overlaps with the operating part of the core rod, the pen core at the bottom of the core rod is opposite to the core outlet hole of the pen tip. When the knob slides along the elongated groove toward the pen tip, the knob drives the core rod to slide relative to the core rod groove, and the pen core at the bottom of the core rod slides out along the core outlet hole of the pen tip. With the above structure, there is no need to set up multiple sets of sliders. Only one slider, together with the knob on the top of the pen body, can realize the switching and extension of the pen refill. The structure is relatively simple to assemble and quick and convenient to use.

[0005] The inner end of the sliding button is provided with an elastic locking block. The center of the elastic locking block is a deformation groove, and the two sides are provided with limiting grooves that cooperate with the sides of the elongated sliding groove. The overlapping part of the inner end of the elastic locking block is an arc-shaped notch. The operating part at the top of the core rod is an annular notch that cooperates with the arc-shaped notch. The limiting flange is adapted to the annular notch. Through this structure, the inner end of the sliding button and the core rod are linked, and the core rod slides together with the sliding button. It also facilitates easy engagement or disengagement of the annular notch of the core rod and the arc-shaped notch of the sliding button when the core rod rotates with the rotating core bracket.

[0006] The sliding button has elastic latches on both sides, and the long, narrow groove of the pen body has teeth on both sides that engage with the elastic latches. This structure ensures that the sliding button self-locks when it slides into position relative to the long, narrow groove, preventing the button, the refill rod, and the pen tip from sliding easily, making it more reliable and convenient to use.

[0007] The core rod has a polygonal circumference, and the core rod groove of the rotating core bracket is a corresponding polygonal groove for the core rod. This structure prevents the core rod itself from rotating within the core rod groove of the rotating core bracket, ensuring the stability of the pen refill during use.

[0008] The cylindrical hole at the top of the pen body has at least one annular groove, and the circumference of the knob has an annular rib that mates with the annular groove. Through the engagement of the annular rib and the annular groove, the knob and the pen body form a positioning rotation. This structure enables quick connection between the knob and the pen refill, and allows the knob to rotate freely.

[0009] The cylindrical hole at the top of the pen body has an array of positioning grooves along its annular inner wall, corresponding to the number of core rods in the refill bracket. The circumference of the knob has spring grooves that alternately align with each of the positioning grooves during rotation. Springs and ball bearings are housed within these spring grooves. When a spring groove aligns with a positioning groove, the ball bearing, under the action of the spring, partially protrudes from the spring groove and engages with the positioning groove to form an elastic locking state. In this elastic locking state, the operating part of one of the core rods of the refill bracket engages with the overlapping part of the sliding knob. Through this structure, when the knob drives the refill bracket to rotate, each time the operating part of the core rod engages with the operating part of the sliding knob, the ball bearing in the spring groove engages with the positioning groove in the cylindrical hole of the pen body to form a locking and limiting state, thus facilitating the rotation of the core rod into position and making it convenient to switch pen refills.

[0010] The end of the core rod has a side-opening elastic clip that holds the pen refill. This structure facilitates a detachable connection between the core rod and the pen refill.

[0011] The limiting flange is omitted inside the cylindrical hole of the pen body. The inner end of the knob forms a height-limiting feature with respect to the top of the core rod in each of the core rod sliding grooves. The core rod sliding grooves exert a clamping force on the core rod, meaning the core rod slides with damping relative to the core rod sliding grooves. This structure also prevents the core rod from easily sliding axially relative to the core rod sliding grooves, providing a position holding function. This ensures that the core rod is reliably positioned at the top of the rotating core support when switching is required, facilitating reliable engagement between the operating part of the core rod and the overlapping part of the knob when the rotating core support rotates.

[0012] The limiting flange is omitted from the cylindrical hole of the pen body. The inner end of the knob forms a height-limiting feature with the top of the core rod in each of the core rod sliding grooves. A magnet is integrated at the top of the operating part of the selected core rod, and a magnetic block that engages with the magnet is integrated at the inner end of the knob. When the top of the core rod abuts against the inner end of the knob, the magnetic block engages with the magnet to hold the core rod in place. This structure also prevents the core rod from easily sliding axially relative to the core rod sliding groove, ensuring that the core rod is reliably positioned at the top of the rotating core support when rotation is required. This facilitates reliable engagement between the operating part of the core rod and the overlapping part of the sliding knob as the rotating core support rotates.

[0013] The bottom of the pen body has an irregularly shaped opening with at least one retaining groove. One end of the pen tip is pointed, and the other end has an irregularly shaped head that mates with the irregularly shaped opening. The irregularly shaped head has a retaining rib that mates with the retaining groove. Thus, the pen body and pen tip are fixed together by the retaining groove and retaining rib. This structure allows for a detachable and quick connection between the pen body and pen tip, facilitating the replacement of the pen refill.

[0014] The overall structure of this utility model is relatively compact and reasonable, with relatively few parts. It can effectively realize the switching of multi-color inner cores, and is easy and quick to operate. It is also easy to carry and use, and is suitable for use as a multi-color inner core makeup pen in the field of makeup, or as an improvement on the structure of similar makeup pens. Attached Figure Description

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

[0016] Figure 2 This is a partial exploded structural diagram of the present invention, with the pen refill and part of the core rod omitted from the diagram.

[0017] Figure 3 This is a schematic diagram of the top surface structure of the pen body of this utility model.

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

[0019] Figure 5 This is a schematic diagram of the internal cross-sectional structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the inner structure of the slider of this utility model.

[0021] Figure 7 yes Figure 6 A schematic diagram of the structure in which the sliding button and the operating part of the core rod overlap and cooperate.

[0022] Figure 8 This is a schematic diagram of the assembly structure of the pen body and pen tip of this utility model.

[0023] Figure 9 This is a schematic diagram of a partial improvement of the present invention.

[0024] The numbers and names in the diagram are as follows: 1. Pen tip, 101. Lead hole, 102. Irregularly shaped head, 103. Buckling rib, 2. Pen body, 201. Long strip groove, 202. Annular groove, 203. Positioning groove, 204. Limiting boss, 205. Irregular opening, 206. Buckling groove, 3. Rotating lead bracket, 301. Lead rod groove, 4. Lead rod, 401. Annular notch, 402. Elastic clamp, 403. Magnet, 5. Pen lead, 6. Sliding button, 601. Elastic block, 602. Elastic buckle, 603. Limiting buckle groove, 604. Deformation groove, 605. Arc-shaped notch, 7. Knob, 701. Annular rib, 702. Plug, 703. Spring groove, 704. Spring, 705. Ball bearing, 706. Magnetic block. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings.

[0026] like Figures 1-8 As shown, the makeup pen containing multi-colored inner cores includes a pen shell and a pen core assembly. The pen shell includes a pen tip 1 and a pen body 2. The bottom of the pen body has an irregular opening 205, and the irregular opening has two locking grooves 206. The pen tip has a core outlet hole 101. One end of the pen tip is pointed, and the other end has an irregular head 102 that mates with the irregular opening at the bottom of the pen body. The irregular head has two locking ribs 103, which engage with the two locking grooves in the irregular opening to form a locking and fixing position.

[0027] The aforementioned pen refill assembly includes a rotating refill bracket 3, a refill rod 4, and a pen refill 5. The pen body 2 has a cylindrical hole inside, except for the irregular opening 205 at the lower end. A rotating refill bracket, which rotates relative to the pen tip, is installed within the cylindrical hole. The bottom of the rotating refill bracket is positioned to abut against the pen tip. Three refill rod grooves 301, which slide in a uniform array on the circumference of the rotating refill bracket, are evenly arranged and are parallel to the axis of the rotating refill bracket. The circumference of the refill rod is polygonal, and the refill rod grooves are polygonal grooves corresponding to the refill rod. The bottom of the refill rod has a side-opening elastic clamp 402 for holding and connecting the pen refill. The top of the refill rod has an operating part forming an annular notch 401. The outer side of the pen body is provided with a long strip-shaped groove 201 along the length of the pen body. The two sides of the long strip-shaped groove are evenly provided with teeth. A sliding button 6 is provided on the outside of the pen body, which slides in conjunction with the long strip-shaped groove. An elastic locking block 601 is integrated into the inner end of the sliding button. The elastic locking block has a deformation groove 604 in the middle and limiting grooves 603 on both sides that cooperate with the sides of the long strip-shaped groove. Below the limiting grooves on both sides are elastic buckles 602 that elastically engage with the teeth on both sides of the long strip-shaped groove. The elastic buckles and teeth cooperate to ensure that the sliding button has a self-locking effect after sliding into position, requiring external force to unlock it. The inner end of the elastic locking block has an overlapping part that matches the annular notch at the top of the core rod. The overlapping part is an arc-shaped notch 605.

[0028] The cylindrical hole at the top of the pen body 2 has two annular grooves 202 and three evenly distributed vertical positioning grooves 203. The circumference of the knob 7 has annular ribs 701 that cooperate with the annular grooves. Through the cooperation of the annular ribs and the annular grooves, the knob and the pen body form a positioning rotation. The circumference of the knob is also provided with a ring of anti-slip ribs for easy hand-twisting operation. The inner end of the knob has three plugs 702, which are interference-fitted with the three sockets extending from the top of the three core rod slide grooves 301 of the rotating core bracket to form a coupling rotation. The inner end of the knob forms an equal height limit for the top of the core rod in each core rod slide groove. The cylindrical hole of the pen body has a limiting flange 204 that forms an axial limit for the operating part of the core rod that does not overlap with the inner end of the knob. After axial limit, all core rods in the cylindrical hole are in an equal height state. The knob has a spring groove 703 on its circumference that alternately faces each positioning groove when rotated. A spring 704 and a ball 705 are installed in the spring groove to press against each other. When the spring groove is opposite to the positioning groove, the ball is partially exposed in the spring groove under the action of the spring and cooperates with the positioning groove to form an elastic locking state. In this elastic locking state, the annular notch 401 of one of the core rods 4 of the rotating core bracket 3 overlaps with the arc-shaped notch at the inner end of the knob.

[0029] When the slider 6 is at the top of the elongated groove 201, and each core rod 4 is pressed against the inner end of the knob 7, rotating the knob causes the core support 3 to rotate relative to the pen body 2. The arc-shaped notch 605 at the inner end of the slider and the annular notch 401 at the top of each core rod of the core support form an alternating overlapping fit. When the arc-shaped notch of the slider overlaps with the annular notch of one of the core rods, the end of the pen core 5 of that core rod is opposite to the core outlet hole 101 of the pen tip 1. The annular notches of the other two core rods cooperate with the limiting flange 204 in the cylindrical hole of the pen body to form an axial limit, and the three core rods are in an equal height state. When the slider slides along the elongated groove toward the pen tip, the slider causes the corresponding core rod to slide relative to the core rod groove 301, and the pen core at the bottom of the core rod slides out along the core outlet hole of the pen tip.

[0030] In addition to the above structure, the limiting flange inside the cylindrical hole of the makeup pen body can also be omitted. The core rod groove is designed to form a clamping force on the core rod, that is, the core rod slides with damping relative to the core rod groove. This ensures that the core rod does not easily slide relative to the core rod groove under normal vibration or shaking, and also allows each core rod to be stably positioned at the top of the rotating support when switching is required. However, the above solution has high requirements for damping. Therefore, another method can be adopted... Figure 9 The improved solution shown is similarly omitted. The limiting flange inside the cylindrical hole of the pen body is also omitted. A magnet 403 is integrated into the top of the operating part of the core rod, and a magnetic block 706 that attracts the magnet is integrated into the inner end of the knob 7. When the top of the core rod abuts against the inner end of the knob, the magnetic block and the magnet attract each other to hold the core rod in place. This also ensures that when the core rod bracket 3 rotates, each core rod is reliably located in the switching position, which facilitates a reliable engagement with the overlapping part of the inner end of the slide button 6 during rotation.

[0031] The makeup pen with multi-colored inner cores is used as follows: In the initial state, the sliding button 6 is located at the top of the elongated groove 201. The arc-shaped notch 605 at the inner end of the sliding button engages with the annular notch 401 at the top of one of the core rods 4. When the sliding button is manually operated and slids along the elongated groove towards the pen tip 1, the arc-shaped notch at the inner end of the sliding button drives the core rod 4 to slide towards the pen tip until the pen core 5 extends out through the lead outlet 101 at the pen tip. At this time, the sliding button relies on the elastic buckle 602 on its inner side to elastically engage with the teeth on both sides of the elongated groove, thus having a self-holding effect and not easily sliding. After use, the pen core can be retracted into the pen body 2 by manually pushing and pulling the sliding button to overcome the holding force of the elastic engagement. When switching colors, ensure the slider is slid to the top of the elongated groove, then rotate knob 7. The knob rotates the core support 3, which in turn rotates the core rod. Continue rotating until the ball bearing 705 in the circumferential spring groove 703 engages with another positioning groove 203 in the cylindrical hole at the top of the pen body. This completes one switching operation. Slide the knob again to extend the switched pen tip for use. The overall switching process is quick and convenient. To easily distinguish pen colors, the knob position can be equipped with an indicator label corresponding to the pen color, or the elongated groove can be used to identify the color of the internal core rod or pen refill.

[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 makeup pen containing a multi-colored inner core, the makeup pen comprising a pen shell and a core assembly, the pen shell comprising a pen tip (1) and a pen body (2), the pen tip being fixed to the bottom of the pen body and having a core outlet hole (101) inside the pen tip, the core assembly comprising a core rotating bracket (3), a core rod (4), and a core (5), characterized in that The pen body (2) has a cylindrical hole inside, and a rotating core support (3) is set inside the cylindrical hole. The bottom of the rotating core support abuts against and limits the pen tip (1). The circumference of the rotating core support is evenly arrayed with core rod grooves (301) adapted to slide with the core rod (4), and the sliding direction of the core rod is parallel to the axis of the rotating core support. The bottom of the core rod is fixedly connected to the pen core (5), and the top of the core rod is provided with an operating part. The outer side of the pen body is provided with a long strip groove (201) along the length of the pen body. The outer side of the pen body is provided with a sliding button (6) that slides with the long strip groove. The inner end of the sliding button is provided with an overlapping part that overlaps with the operating part. The top of the pen body is provided with a positioning rotating knob (7), and the inner end of the knob is connected to the top of the rotating core support. The connection forms a rotating coupling. The cylindrical hole of the pen body is provided with a limiting flange (204) that axially limits the operating part of the core rod that does not overlap with the inner end of the sliding button. After axial limiting, all core rods in the cylindrical hole are at the same height. When the sliding button is located at the top of the elongated groove, the rotating core support rotates relative to the pen body. The overlapping part of the sliding button and the operating part at the top of each core rod of the rotating core support form an alternating overlapping engagement. When the overlapping part of the sliding button overlaps with the operating part of the core rod, the pen core at the bottom of the core rod is opposite to the core outlet hole (101) of the pen tip. When the sliding button slides along the elongated groove toward the pen tip, the sliding button drives the core rod to slide relative to the core rod groove, and the pen core at the bottom of the core rod slides out along the core outlet hole of the pen tip.

2. The makeup pen with a multi-colored inner core as described in claim 1, characterized in that... The inner end of the sliding button (6) is provided with an elastic locking block (601), the middle part of the elastic locking block is a deformation groove (604), and the two sides are provided with limiting buckle grooves (603) that cooperate with the two sides of the long strip sliding groove (201). The overlapping part of the inner end of the elastic locking block is an arc-shaped notch (605). The operating part at the top of the core rod is an annular notch (401) that cooperates with the arc-shaped notch. The limiting flange (204) is adapted to the annular notch.

3. The makeup pen with a multi-colored inner core as described in claim 2, characterized in that... The elastic latch (601) of the sliding button (6) is provided with elastic buckles (602) on both sides, and the long strip groove (201) of the pen body (2) is provided with teeth that elastically engage with the elastic buckles on both sides.

4. The makeup pen with a multi-colored inner core as described in claim 1, characterized in that... The circumference of the core rod (4) is polygonal, and the core rod groove (301) of the rotating core bracket (3) is a polygonal groove corresponding to the core rod.

5. The makeup pen with a multi-colored inner core as described in claim 1, characterized in that... The top of the pen body (2) has at least one annular groove (202) in the cylindrical hole, and the circumference of the knob (7) has an annular rib (701) that cooperates with the annular groove. The knob and the pen body form a positioning rotation through the cooperation of the annular rib and the annular groove.

6. The makeup pen with a multi-colored inner core as described in claim 5, characterized in that... The cylindrical hole at the top of the pen body (2) is provided with positioning grooves (203) along the annular inner wall, corresponding to the number of core rods (4) in the rotating core bracket (3). The circumferential surface of the knob (7) is provided with spring grooves (703) that alternately face each positioning groove when rotating. Springs (704) and ball bearings (705) are provided in the spring grooves. When the spring groove faces the positioning groove, the ball bearings are partially exposed in the spring groove under the action of the spring and cooperate with the positioning groove to form an elastic locking state. In this elastic locking state, the operating part of one of the core rods of the rotating core bracket and the overlapping part of the sliding knob (6) form an overlapping cooperation.

7. The makeup pen with a multi-colored inner core according to claim 1, characterized in that... The end of the core rod (4) is provided with an elastic clip (402) with a side opening, and the pen core (5) is clamped in the elastic clip.

8. The makeup pen with a multi-colored inner core as described in claim 1, characterized in that... The limiting flange (204) is omitted in the cylindrical hole of the pen body (2). The inner end of the knob (7) forms an equal height limit on the top of the core rod (4) in each core rod groove (301). The core rod groove forms a clamping force on the core rod, that is, the core rod slides with damping relative to the core rod groove.

9. The makeup pen with a multi-colored inner core according to claim 1, characterized in that... The limiting flange (204) is omitted in the cylindrical hole of the pen body (2). The inner end of the knob (7) forms a height limit on the top of the core rod (4) in each core rod slide groove (301). A magnet (403) is integrated on the top of the operating part of the core rod. A magnetic block (706) that attracts the magnet is integrated on the inner end of the knob (7). When the top of the core rod abuts against the inner end of the knob, the magnetic block and the magnet attract each other to hold the core rod.

10. The makeup pen with a multi-colored inner core according to claim 1, characterized in that... The bottom of the pen body (2) is an irregular opening (205), and at least one groove (206) is provided inside the irregular opening. One end of the pen tip (1) is pointed, and the other end is provided with an irregular head (102) that cooperates with the irregular opening. The irregular head is provided with a buckle (103) that cooperates with the groove. That is, the pen body and the pen tip are fixed together by the groove and the buckle.

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