Cosmetic pencil with screw-out

Abstract

The utility model belongs to the cosmetic technical field, especially spiral push formula cosmetic pen, including pen body, the one end of pen body is equipped with the pen head of rotation, the fixed spiral spring in pen body, the spiral slide of forming has in spiral spring, be equipped with the inner slide sleeve in spiral spring, the one end of inner slide sleeve is connected the pen head, still be equipped with the core clamp in inner slide sleeve, the fixed core in core clamp is set up in the pen head and the inner slide sleeve, be equipped with the linear guide structure of making the core clamp relative the linear sliding of inner slide sleeve on inner slide sleeve and core clamp, one side of core clamp still be equipped with the inner guide rod, one side of inner slide sleeve is equipped with the guide slot, the end of inner guide rod passes through the guide slot and extends into the spiral slide, this patent can realize the stable forward movement or backward movement of the core through the pen head rotation, compact structure, transmission is smooth.

Description

Technical Field

[0001] This utility model belongs to the field of cosmetic technology, specifically referring to a spiral-pull-out cosmetic pen. Background Technology

[0002] Chinese utility model 2014208728296 discloses an eyebrow pencil, which includes a pencil tip, an inner plug, a central shaft, and a pencil body. The eyebrow pencil moves the inner lead by setting threaded protrusions and moving the central shaft up and down through its threaded structure, so as to push the lead out for use.

[0003] However, since the pen refill is fixed to the lower end of the central shaft, the length of the pen refill is limited, which means that users need to frequently install the pen refill during actual use. Summary of the Invention

[0004] The purpose of this invention is to provide a spiral-pull-out cosmetic pen.

[0005] The purpose of this utility model is achieved as follows:

[0006] A spiral-expandable cosmetic pen includes a pen body with a rotatable pen tip at one end; a spiral spring is fixed inside the pen body, and a spiral slide is formed in the spiral spring; an inner sleeve is provided inside the spiral spring, and one end of the inner sleeve is connected to the pen tip; a core clip is also provided in the inner sleeve, and a pen tip that passes through the pen tip and the inner sleeve is fixed in the core clip; a linear guide structure is provided on the inner sleeve and the core clip to allow the core clip to slide linearly relative to the inner sleeve; an inner guide rod is also provided on one side of the core clip, and a guide groove is provided on one side of the inner sleeve, with the end of the inner guide rod extending into the spiral slide through the guide groove;

[0007] Rotating the pen tip causes the inner sliding sleeve to rotate. Under the action of the linear guide structure, the core clip follows the rotation of the inner sliding sleeve. Due to the constraint of the spiral slide, the core clip slides along the inner sliding sleeve, thereby extending or retracting the pen tip.

[0008] Furthermore, the core clip includes a left clip and a right clip, with a clamping cavity formed between the left clip and the right clip for fixing the pen core.

[0009] Furthermore, the guide rail structure includes a T-shaped slider portion formed on the left and right clamping blocks and a T-shaped guide groove disposed on the inner wall of the inner sliding sleeve.

[0010] Furthermore, the inner guide rod is disposed on the outer wall of the left or right clamping block.

[0011] Furthermore, one end of the pen body is provided with a fixing seat, and the outer wall of the fixing seat is provided with a groove. The helical spring has a first positioning section embedded in the groove, and the first positioning section is also connected to a second positioning section extending to the top of the fixing seat. The pen body is provided with a fitting block that fits into the groove and closes the first positioning section.

[0012] Furthermore, the fixing base is provided with a receiving groove facing the core clamp, and the core clamp is provided with an extension rod located within the receiving groove.

[0013] Furthermore, one end of the pen tip is provided with a rotating insertion part for rotating and inserting into the pen body, and the rotating insertion part is provided with a plurality of insertion protrusions, one side of which is an inclined surface; the pen body is provided with a rotating insertion groove for accommodating the insertion protrusions.

[0014] Furthermore, the pen tip has a fitting groove inside, one end of the inner sliding sleeve is inserted into the fitting groove, and the end of the inner sliding sleeve has several fitting protrusions.

[0015] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0016] This patented design allows for smooth forward or backward movement of the pen refill via pen tip rotation, featuring a compact structure and smooth transmission. The refill clip's space design is optimized, providing ample room for longer refills, extending their lifespan, reducing replacement frequency, and enhancing the user experience. Attached Figure Description

[0017] Figure 1 This is a cross-sectional diagram of the eyebrow pencil along the y-axis.

[0018] Figure 2 This is a cross-sectional diagram of the eyebrow pencil along the z-axis.

[0019] Figure 3 This is a diagram illustrating the explosion of an eyebrow pencil.

[0020] Figure 4 This is a schematic diagram of the structure of the fixed base and the helical spring.

[0021] Figure 5 This is a schematic diagram of the core clamp and inner sliding sleeve.

[0022] Figure 6 yes Figure 1 Enlarged view of point A in the middle.

[0023] Figure 7 yes Figure 1 Enlarged view of point B in the middle.

[0024] Figure 8 yes Figure 2 Enlarged view of point C in the middle.

[0025] Figure 9 yes Figure 5 A schematic diagram of the cross-section at point C1-C2.

[0026] The meaning of the labels in the diagram:

[0027] 1. Pen body; 11. Fitting block; 12. Rotating insertion slot;

[0028] 2. Pen tip; 21. Rotating connector; 22. Connecting boss; 23. Fitting groove;

[0029] 3. Helical spring; 31. Helical slide; 32. First positioning section; 33. Second positioning section;

[0030] 4. Inner sliding sleeve; 41. Guide groove; 42. T-shaped guide groove; 43. Fitting protrusion; 44. Pen refill guide groove;

[0031] 5. Core clamp; 51. Inner guide rod; 52. Left clamping block; 53. Right clamping block; 54. Clamping cavity; 55. T-shaped slider section; 56. Extension rod section;

[0032] 6. Pen refill; 61. Guide end; 7. Fixing base; 71. Insert groove; 72. Receiving groove; Detailed Implementation

[0033] The present invention will be further described below with reference to specific embodiments:

[0034] This invention discloses a spiral-expandable cosmetic pen, such as... Figure 1 , 2 As shown in Figures 6-8, the pen includes components such as the pen body 1, pen tip 2, pen core 6, inner sliding sleeve 4, core clip 5, and spiral spring 3. The pen body 1 has a rotatable pen tip 2 at one end; a helical spring 3 is fixed inside the pen body 1, and a helical slide 31 is formed in the helical spring 3; an inner sliding sleeve 4 is provided inside the helical spring 3, and one end of the inner sliding sleeve 4 is connected to the pen tip 2; a core clip 5 is also provided in the inner sliding sleeve 4, and a pen core 6 is fixed in the core clip 5 and passes through the pen tip 2 and the inner sliding sleeve 4; the inner sliding sleeve 4 and the core clip 5 are provided with a linear guide rail structure that allows the core clip 5 to slide linearly relative to the inner sliding sleeve 4; an inner guide rod 51 is also provided on one side of the core clip 5, and a guide groove 41 is provided on one side of the inner sliding sleeve 4. The inner guide rod 51 passes through the guide groove 41 and is located in the helical slide 31. When the pen tip 2 rotates, the pen tip 2 drives the inner sliding sleeve 4 to rotate, so that the core clip 5 slides linearly along the inner sliding sleeve 4 because the inner guide rod 51 is limited in the helical slide 31 and the guide groove 41.

[0035] Specifically, the pen body 1 and pen tip 2 are integrally cylindrical. One end of the pen body 1 is provided with a rotatably connected pen tip 2, and the front end of the pen tip 2 has a rotating insertion part 21. The rotating insertion part 21 can be directly inserted into the pen body 1, and one end of the pen body 1 is open, allowing the pen tip 2 to be directly inserted. The outer surface of the rotating insertion part 21 is provided with several insertion protrusions 22, one side of each insertion protrusion 22 being an inclined surface. This inclined surface allows the rotating insertion part 21 to be directly inserted into the pen body 1 during assembly, and the insertion protrusion 22 to be embedded in the rotating insertion groove 12, achieving a stable insertion connection while ensuring that the pen tip 2 can rotate smoothly on the pen body 1.

[0036] A helical spring 3 is fixedly installed inside the pen body 1, and a helical slide 31 is formed in the helical spring 3. The helical slide 31 is used to guide the core clip 5 to slide along the axis of the pen body 1. The pen tip 2 has a tight-fitting groove 23 inside, and one end of the inner sliding sleeve 4 is inserted into the tight-fitting groove 23. The lower end of the inner sliding sleeve 4 has several tight-fitting protrusions 43. The tight-fitting protrusions 43 interfere with each other with the inner wall of the tight-fitting groove 23 to achieve a tight connection between the pen tip 2 and the inner sliding sleeve 4. This structure allows the rotation of the pen tip 2 to directly drive the inner sliding sleeve 4 to rotate synchronously.

[0037] The inner sliding sleeve 4 is installed inside the helical spring 3 and is tightly connected to the pen tip 2. The inner sliding sleeve 4 contains a core clip 5, which holds the pen tip 6. The pen tip 6 can be an eyebrow pencil tip, eyeliner tip, or lip liner tip, depending on makeup needs. A linear guide structure is provided between the core clip 5 and the inner sliding sleeve 4 to allow the core clip 5 to slide linearly along the axis of the pen body 1.

[0038] like Figure 5 As shown, the refill clip 5 includes a left clip 52 and a right clip 53, and a clamping cavity 54 for fixing the pen refill 6 is formed between the left clip 52 and the right clip 53. The pen refill 6 is reliably clamped and fixed by the clamping cavity 54, and the user can directly insert the pen refill 6 into the clamping cavity 54 or directly pull it out, which makes it convenient for the user to replace the pen refill 6 with a new one when it is used up, and the maintenance is convenient.

[0039] The guide rail structure between the core clip 5 and the inner sliding sleeve 4 includes: a T-shaped slider portion 55 formed on the outer side of the left clip 52 and the right clip 53, and a T-shaped guide groove 42 provided on the inner wall of the inner sliding sleeve 4. The T-shaped slider portion 55 and the T-shaped guide groove 42 cooperate to allow the core clip 5 to slide linearly along the pen axis direction within the inner sliding sleeve 4, preventing rotation or offset, thereby ensuring the stability of the pen lead 6 movement and the accuracy of lead ejection.

[0040] An inner guide rod 51 is provided on one side of the core clip 5. The inner guide rod 51 has a columnar structure and passes through the guide groove 41 on the inner sliding sleeve 4. The guide groove 41 is directly formed at one end of the inner sliding sleeve 4 and is strip-shaped. The inner guide rod 51 passes through the guide groove 41 on the inner sliding sleeve 4 and is located directly in the spiral slide 31. When the pen tip 2 rotates, the inner guide rod 51 moves along the spiral slide 31, restricting the rotation of the core clip 5 so that it slides along the linear guide rail structure, realizing the smooth extension and retraction of the pen lead 6.

[0041] When the user rotates the pen tip 2, the pen tip 2 drives the inner sliding sleeve 4 to rotate synchronously. Since the inner guide rod 51 of the core clip 5 is confined within the spiral slide 31, when the inner sliding sleeve 4 rotates, the inner guide rod 51 moves along the spiral slide 31, causing the core clip 5 to slide along the linear guide structure, thus achieving the axial extension or retraction of the pen core 6. The technical advantages of this structure are: the pen core 6 can be smoothly moved forward or backward simply by rotating the pen tip 2; the structure is compact; and the transmission is smooth. The space design of the core clip 5 is reasonable, leaving enough space to install a longer pen core 6, thereby making the cosmetic pen of this application more durable, reducing the frequency of replacement, and improving the user experience.

[0042] Furthermore, this patent adjusts the material, wire diameter, effective number of turns, and helix angle of the helical spring 3 to ensure its strength meets the following two conditions: when the user is using the pen refill 6 normally, the helical spring 3 rigidly supports the pen refill 6 and maintains a stable extended length; when the pen refill 6 is subjected to a momentary impact, the helical spring 3 retracts to absorb the impact kinetic energy. The "normal user use" condition refers to the user using the patented cosmetic pen for makeup application. In this case, the axial force received by the pen refill 6 is relatively small, generally less than 2N. The helical spring 3 maintains rigid support due to its material or structural strength, ensuring that the pen refill 6 does not retract and maintains a stable extended length. When the pen tip 6 is subjected to a momentary impact, it means that the cosmetic pen of this patent is accidentally dropped from a height during use, causing the pen tip 6 to receive an axial impact force. The impact force received by the pen tip 6 is transmitted sequentially through the core clip 5, the inner guide rod 51, and then to the spiral spring 3. The spiral spring 3 absorbs the kinetic energy by generating a certain elastic recoil stroke under the force, so as to retract the pen tip 6 and effectively reduce the damage to the pen tip 6.

[0043] Furthermore, the inner sliding sleeve 4 is also provided with a pen refill guide groove 44, and the pen refill 6 is provided with a guide end 61 located within the pen refill guide groove 44. When the refill clip 5 slides along the inner sliding sleeve 4, the guide end 61 of the pen refill 6 slides within the pen refill guide groove 44, such as... Figure 9As shown, the pen refill guide groove 44 is formed between two T-shaped guide grooves 42, and its overall shape is arc. Correspondingly, arc-shaped guide ends 61 are formed at both ends of the pen refill 6. At this time, while the pen refill 6 is reliably clamped and fixed by the core clip 5, it is guided and limited on the other side by the pen refill guide groove 44, which is equivalent to implementing full-dimensional fixation of the pen refill 6 in four directions, effectively preventing the pen refill from breaking.

[0044] like Figure 3 , 4 As shown, a fixing seat 7 is provided on one side of the inner sliding sleeve 4, and the fixing seat 7 is generally columnar in structure. Four grooves 71 are formed on the outer wall of the fixing seat 7 for installing the helical spring 3. The pen body 1 is provided with a fitting block 11 corresponding to the grooves 71. The top of the helical spring 3 extends upward to form a first positioning section 32 and a second positioning section 33, which are angled. The first positioning section 32 is embedded in the groove 71 of the fixing seat 7, and the second positioning section 33 is located on the top of the fixing seat 7. During installation, the helical spring 3 is first connected to the fixing seat 7, and then the fixing seat 7 is installed inside the pen body 1, so that the fitting block 11 inside the pen body 1 is located in the groove 71, thereby fixing the fixing seat 7 and sealing the first positioning section 32, thus completing the fixed connection between the helical spring 3 and the fixing seat 7, ensuring the stability of the spring installation and the elastic recovery effect.

[0045] The mounting base 7 is provided with a receiving groove 72 facing the core clip 5, and the end of the core clip 5 is provided with an extension rod 56. The extension rod 56 is used to place the core clip 5 in the receiving groove 72 when the core clip 5 is not moving, effectively preventing the core clip 5 from shifting or shaking, extending the service life of the pen refill 6, and facilitating product positioning and assembly.

[0046] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

[0047] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0048] It should also be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0049] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

Claims

1. A spiral-expandable cosmetic pen, characterized in that: The device includes a pen body (1), one end of which is rotatably provided with a pen tip (2); a helical spring (3) is fixed inside the pen body (1), and a helical slide (31) is formed in the helical spring (3); an inner sleeve (4) is provided inside the helical spring (3), one end of which is connected to the pen tip (2); a core clip (5) is also provided in the inner sleeve (4), and a pen core (6) is fixed in the core clip (5) and passes through the pen tip (2) and the inner sleeve (4); a linear guide structure is provided on the inner sleeve (4) and the core clip (5) to allow the core clip (5) to slide linearly relative to the inner sleeve (4); an inner guide rod (51) is also provided on one side of the core clip (5), and a guide groove (41) is provided on one side of the inner sleeve (4), and the end of the inner guide rod (51) passes through the guide groove (41) and extends into the helical slide (31); Rotate the pen tip (2), and the pen tip (2) will drive the inner sliding sleeve (4) to rotate. Under the action of the linear guide structure, the core clip (5) will rotate with the inner sliding sleeve (4). Due to the constraint of the spiral slide (31), the core clip (5) will slide along the inner sliding sleeve (4) to realize the extension or retraction of the pen tip (6).

2. The spiral-expandable cosmetic pen according to claim 1, characterized in that: The core clip (5) includes a left clip (52) and a right clip (53), and a clamping cavity (54) for fixing the pen core (6) is formed between the left clip (52) and the right clip (53).

3. A spiral-expandable cosmetic pen according to claim 2, characterized in that: The inner sliding sleeve (4) is also provided with a pen refill guide groove (44), and the pen refill (6) is provided with a guide end (61) located in the pen refill guide groove (44). When the core clip (5) slides along the inner sliding sleeve (4), the guide end (61) of the pen refill (6) slides in the pen refill guide groove (44).

4. A spiral-expanding cosmetic pen according to claim 2 or 3, characterized in that: The guide rail structure includes a T-shaped slider (55) formed on the left clamp (52) and the right clamp (53) and a T-shaped guide groove (42) provided on the inner wall of the inner sleeve (4).

5. A spiral-expanding cosmetic pen according to claim 2 or 3, characterized in that: The inner guide rod (51) is disposed on the outer wall of the left clamp (52) or the right clamp (53).

6. A spiral-expandable cosmetic pen according to claim 1, characterized in that: One end of the pen body (1) is provided with a fixing seat (7), and the outer wall of the fixing seat (7) is provided with a groove (71). The helical spring (3) has a first positioning section (32) embedded in the groove (71), and the first positioning section (32) is also connected to a second positioning section (33) extending to the top of the fixing seat (7). The pen body (1) is provided with a fitting block (11) that fits into the groove (71) and closes the first positioning section (32).

7. A spiral-expandable cosmetic pen according to claim 6, characterized in that: The fixing base (7) is provided with a receiving groove (72) facing the core clamp (5), and the core clamp (5) is provided with an extension rod (56) located in the receiving groove (72).

8. A spiral-expandable cosmetic pen according to claim 1, characterized in that: The pen tip (2) has a rotating insertion part (21) at one end for rotating and inserting into the pen body (1). The rotating insertion part (21) has a plurality of insertion protrusions (22), and one side of the insertion protrusions (22) is an inclined surface. The pen body (1) has a rotating insertion groove (12) for accommodating the insertion protrusions (22).

9. A spiral-expandable cosmetic pen according to claim 1, characterized in that: The pen tip (2) has a tight fitting groove (23) inside, and one end of the inner sliding sleeve (4) is inserted into the tight fitting groove (23). The end of the inner sliding sleeve (4) is provided with several tight fitting protrusions (43).

10. A spiral-expanding cosmetic pen according to claim 1, characterized in that, The helical spring (3) is configured as follows: When the user uses the pen refill (6) normally, the helical spring (3) rigidly supports the pen refill (6) and keeps the pen refill (6) extended to a stable length; When the pen tip (6) is subjected to an instantaneous impact, the helical spring (3) retracts to absorb the impact kinetic energy.

Images