Side-operated makeup pen

Abstract

The present application relates to a side-operated makeup pen, comprising a pen assembly, a driving assembly, and a discharging assembly, wherein the driving assembly is mounted on the side wall of the pen assembly; the discharging assembly is mounted in the pen assembly; the discharging assembly comprises a nut, a screw rod, and a material carrying piece; the nut is in threaded connection with the screw rod; the material carrying piece is connected to the screw rod or the nut; the driving assembly drives the nut and the screw rod to rotate relatively, then the nut and the screw rod move relative to each other in the axial direction of the pen assembly, and the nut or the screw rod drives the material carrying piece to move in the axial direction of the pen assembly. When the makeup pen is used for making up, a user can control an operable piece with one hand, so that the process of pushing a material by the screw rod can be achieved, and therefore, the makeup pen is convenient to use and has high practicality.

Description

Side-operated makeup brush Technical Field

[0001] The present application relates to cosmetic packaging technology, and in particular to a side-operated cosmetic pen. Background Art

[0002] Currently, cosmetics such as lipsticks, lip glosses, and eyeliners are mostly dispensed by rotating. To use a cosmetics brush, the user must rotate the base or rotating portion of the cosmetic container to draw the cosmetics out of the container. Therefore, using such a cosmetic brush requires both hands, which is very inconvenient.

[0003] Summary of the Invention

[0004] In order to overcome the above-mentioned defects, the present application provides a side-operated cosmetic brush, which is provided with an operable part, a connecting part, a screw and a nut. When applying makeup, the user can control the operable part with one hand to realize the process of pushing the screw and nut, so it is easy to use and practical.

[0005] The technical solution adopted by this application to solve its technical problems is:

[0006] A side-operated cosmetic brush comprises a pen assembly, a drive assembly and a discharge assembly, wherein the drive assembly is mounted on the side wall of the pen assembly, the discharge assembly is mounted inside the pen assembly, the discharge assembly comprises a nut, a screw and a carrier, the nut is threadedly connected to the screw, the carrier is connected to the screw or the nut, the drive assembly drives the nut and the screw to rotate relative to each other, and then the nut and the screw move relative to each other along the axial direction of the pen assembly, and the nut or the screw drives the carrier to move along the axial direction of the pen assembly.

[0007] Optionally, the nut is axially fixed and circumferentially movably installed in the pen assembly, the driving assembly is transmission-connected to the nut to drive the nut to rotate, the screw is axially movably installed in the pen assembly, and one end of the screw is connected to the carrier.

[0008] Optionally, the screw is axially fixed and circumferentially movably installed in the pen assembly, the drive assembly is connected to the screw to drive the screw to rotate, the nut is axially movably installed in the pen assembly, and one end of the nut is connected to the carrier.

[0009] Optionally, the driving assembly includes an operable part, a connecting part and an elastic part, the operable part is movably mounted on the side wall of the pen assembly, the connecting part and the elastic part are sleeved on the nut, the operable part can drive the connecting part to run along the axial direction of the pen assembly, and the connecting part can drive the nut to rotate when it moves axially along the pen assembly, the first end of the elastic part abuts against the connecting part, and the second end of the elastic part abuts against the inside of the pen assembly.

[0010] Optionally, a protrusion is provided on the inner wall of the connecting piece, and a guide rail groove is provided on the outer wall of the nut. The protrusion is slidably installed in the guide rail groove. When the connecting piece moves axially along the pen assembly, the protrusion slides in the guide rail groove and can drive the nut to rotate.

[0011] Optionally, the protrusion extends radially inwardly of the connecting piece, and the guide groove is arranged along the entire circumference of the outer side wall of the nut.

[0012] Optionally, the guide rail groove includes N unit grooves connected in sequence, and the unit groove includes a first bevel groove and a second bevel groove, the two ends of the first bevel groove are respectively connected to the second bevel groove, and the two ends of the second bevel groove are respectively connected to the first bevel groove, wherein N≥2, and N is an integer.

[0013] Optionally, the first inclined groove and the second inclined groove have opposite inclination directions, and the angle between the first inclined groove and the second inclined groove is a, 0°≤a≤180°.

[0014] Optionally, the connection between the first bevel groove and the second bevel groove in the same unit groove forms a first transition portion, and the connection between the first bevel groove and the second bevel groove in the adjacent unit groove forms a second transition portion, the projection of the first transition portion along the axial direction of the nut falls on the inclined surface of the second bevel groove, and the projection of the second transition portion along the axial direction of the nut falls on the inclined surface of the first bevel groove.

[0015] Optionally, the inclination angle e of the first inclined groove is greater than the inclination angle f of the second inclined groove.

[0016] Optionally, an angle d between the second bevel groove and the axial cross section of the nut is 0°<d≤5°.

[0017] Optionally, the side wall of the pen assembly is provided with a mounting groove, the operable part is installed in the mounting groove, the operable part can move toward the axial direction of the pen assembly under the action of external force, the operable part is provided with a first inclined surface, and the connecting part is provided with a second inclined surface matching the first inclined surface.

[0018] Optionally, a slide groove is provided on the pen assembly along the axial direction, and the operable part is slidably installed in the slide groove. When the operable part moves along the axial direction of the pen assembly under the action of external force, it can drive the connecting part to move synchronously.

[0019] Optionally, the nut is an integrated nut, or the nut includes a first sub-nut and a second sub-nut fixedly mounted together, and the first sub-nut and the second sub-nut are assembled to form a guide rail groove.

[0020] Optionally, the pen assembly includes a pen body, a middle beam core and a front cover, the middle beam core is fixedly mounted on the first end of the pen body, the material carrier is mounted in the middle beam core, and the front cover is pluggable and covers the middle beam core.

[0021] Optionally, a makeup component is further included, which includes a makeup head, a makeup head base and a back cover. The makeup head is fixedly installed in the makeup head base, the makeup head base is fixedly installed on the second end of the pen body, and the back cover is pluggable and covers the makeup head base.

[0022] Optionally, the discharge assembly further comprises a nut seat, wherein the nut seat is fixedly mounted in the pen body, and the nut is axially fixed and circumferentially movably mounted in the nut seat.

[0023] The beneficial effects of this application are:

[0024] 1) In this application, since the operable part is located on the side wall of the cosmetic brush, the user can control the discharging of the cosmetic brush with one hand to complete the makeup, so the design of the cosmetic brush is more humane and more convenient to use.

[0025] 2) This application introduces a screw and nut structure into a cosmetic brush, and utilizes a drive assembly to drive the nut and screw to rotate relative to each other, thereby causing the nut and screw to move relative to each other along the axial direction of the pen assembly to achieve the discharge of cosmetic materials. This is very convenient to operate, simplifies the structure of cosmetic brushes that use side operation, and reduces the development and manufacturing costs of cosmetic brushes.

[0026] 3) In the present application, the axial movement of the connecting part is driven by pressing or sliding the operable part, the rotation of the nut is achieved by the cooperation between the protrusion on the connecting part and the guide groove of the nut, and the axial movement of the screw is achieved by the rotation of the nut, thereby realizing the discharging operation of the cosmetic material. Therefore, the present application is ingenious in conception and simple in operation, and the discharge amount of the cosmetic material is controlled by designing a suitable inclination angle of the guide groove, so that a small amount of cosmetic material can be screwed out for user use as needed, reducing the risk of contamination of the cosmetic material.

[0027] 4) In the present application, a first bevel groove and a second bevel groove are provided on the nut, and a first arc surface and a second arc surface are provided at the connection between the first bevel groove and the second bevel groove. The projection of the first arc surface falls on the inclined surface of the second bevel groove, and the projection of the second arc surface falls on the inclined surface of the first bevel groove, so that the protrusion of the connecting part switches between the first bevel groove and the second bevel groove more smoothly, thereby improving the comfort of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic diagram of the structure of a cosmetic brush in this application;

[0029] FIG2 is a second structural diagram of a cosmetic brush in this application;

[0030] FIG3 is a third structural diagram of a cosmetic brush in this application;

[0031] FIG4 is an exploded view of the cosmetic brush in this application;

[0032] FIG5 is a diagram of the internal structure of the cosmetic pen before pressing in this application;

[0033] Figure 6 is an enlarged view of point A in Figure 5;

[0034] FIG7 is a diagram showing the internal structure of the cosmetic pen after being pressed in this application;

[0035] FIG8 is an enlarged view of point B in FIG7;

[0036] FIG9 is a partial structural diagram of a cosmetic brush in this application;

[0037] FIG10 is a schematic structural diagram of the operable components in this application;

[0038] FIG11 is a schematic structural diagram of a connecting member in this application;

[0039] FIG12 is one of the structural schematic diagrams of the integrated nut in this application;

[0040] FIG13 is a second structural diagram of the integrated nut in this application;

[0041] FIG14 is a schematic structural diagram of a split nut in this application;

[0042] In the figure: 100-pen assembly, 110-pen body, 111-installation slot, 120-middle beam core, 130-front cover,

[0043] 200-driving assembly, 210-operable member, 211-first claw, 212-first inclined surface, 213-stopper, 220-connecting member, 221-second claw, 222-second inclined surface, 223-bump, 230-elastic member,

[0044] 300-discharging assembly, 310-nut seat, 311-slot, 320-nut, 321-guide groove, 322-first inclined groove, 323-second inclined groove, 324-first arc surface, 325-second arc surface, 326-first sub-nut, 327-second sub-nut, 328-protrusion, 330-screw, 340-carrying piece, 350-cosmetic material,

[0045] 400-makeup component, 410-makeup head, 420-makeup head base, 430-back cover. DETAILED DESCRIPTION

[0046] The following will be combined with the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described in this application are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the following drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0048] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0049] Example 1: As shown in Figure 1-14, a side-operated cosmetic brush includes a pen assembly 100, a drive assembly 200 and a discharge assembly 300. The drive assembly 200 is installed on the side wall of the pen assembly 100, and the discharge assembly 300 is installed in the pen assembly 100. The discharge assembly 300 includes a nut 320, a screw 330 and a carrier 340. The nut 320 is screwed to the screw 330, and the carrier 340 is connected to the screw 330 or the nut 320. The drive assembly 200 drives the nut 320 and the screw 330 to rotate relative to each other, and then the nut 320 and the screw 330 move relative to each other along the axial direction of the pen assembly 100. The nut 320 or the screw 330 drives the carrier 340 to move along the axial direction of the pen assembly 100.

[0050] In the present application, the material carrier 340 is fixedly mounted with cosmetic materials 350, which include lipstick, eye shadow, lip gloss, lip balm, eyeliner, etc. The material carrier 340 can be a cylinder for mounting cosmetic materials or a piston for pushing cosmetic materials to move in a cosmetic container.

[0051] Optionally, the nut 320 is axially fixed and circumferentially movably installed in the pen assembly 100, that is, the nut 320 can rotate relative to the pen assembly 100, but cannot move along the axial direction of the pen assembly 100. The driving assembly is transmission-connected to the nut 320 to drive the nut 320 to rotate. The screw 330 is axially movably installed in the pen assembly 100. When the nut 320 rotates, it drives the screw 330 to move axially along the pen assembly 100. One end of the screw 330 is connected to the carrier 340, thereby driving the carrier 340 to move axially along the pen assembly 100.

[0052] Alternatively, optionally, the screw 330 is axially fixed and circumferentially movably installed in the pen assembly 100, that is, the screw 330 can rotate relative to the pen assembly 100, but cannot move axially along the pen assembly 100. The driving assembly is connected to the screw 330 to drive the screw 330 to rotate, and the nut 320 is axially movably installed in the pen assembly 100. When the screw 330 rotates, it drives the nut 320 to move axially along the pen assembly 100. One end of the nut 320 is connected to the carrier 340, thereby driving the carrier 340 to move axially along the pen assembly 100.

[0053] As shown in Figure 2, initially, the carrier 340 is close to the drive assembly 200. During use, the user controls the drive assembly 200 to move, and the drive assembly 200 drives the nut 320 to rotate. When the nut 320 rotates, it drives the screw 330 to move along the axial direction of the pen assembly 100. The carrier 340 and the cosmetic material 350 move synchronously with the screw 330, so that the cosmetic material 350 extends from the pen assembly 100 for use by the user.

[0054] Since the driving assembly is located on the side wall of the cosmetic brush, the user can control the cosmetic brush discharge with one hand to complete makeup, so the design of this cosmetic brush is more humane and more convenient to use; this application introduces the structure of the screw and nut into the cosmetic brush, and uses the driving assembly to drive the nut and the screw to rotate relative to each other, and then the nut and the screw move relative to each other along the axial direction of the pen assembly to realize the discharge of cosmetic materials. The operation is very convenient, and the structure of the cosmetic brush with side operation is simplified, reducing the development and manufacturing costs of the cosmetic brush.

[0055] In one possible embodiment, the nut 320 is axially fixed and circumferentially movably installed in the pen assembly 100, the driving assembly 200 is transmission-connected to the nut 320 to drive the nut 320 to rotate, the screw 330 is axially movably installed in the pen assembly 100, and one end of the screw 330 is connected to the carrier 340.

[0056] In another possible embodiment, the screw 330 is axially fixed and circumferentially movably installed in the pen assembly 100, the driving assembly is connected to the screw 330 to drive the screw 330 to rotate, the nut 320 is axially movably installed in the pen assembly 100, and one end of the nut 320 is connected to the carrier 340.

[0057] As shown in Figure 2, the driving assembly 200 includes an operable part 210, a connecting part 220 and an elastic part 230. The operable part 210 is movably mounted on the side wall of the pen assembly 100. The connecting part 220 and the elastic part 230 are sleeved on the nut 320. The operable part 210 can drive the connecting part 220 to run along the axial direction of the pen assembly 100. When the connecting part 220 moves axially along the pen assembly 100, it can drive the nut 320 to rotate. The first end of the elastic part 230 abuts against the connecting part 220, and the second end of the elastic part 230 abuts against the inside of the pen assembly 100.

[0058] The elastic member 230 is used to reset the connector 220. The connector 220 is installed in the pen assembly 100 so as to be axially movable and circumferentially fixed. To achieve the purpose of circumferential fixation, the connector 220 and the pen assembly 100 can be engaged by a convex rib, or the connector 220 and the pen assembly 100 can be matched by a rib and a groove, or the connector 220 and the pen assembly 100 can have a non-cylindrical structure. As shown in Figures 1 and 4, the radial cross-section of the connector 220 and the pen assembly 100 is a peach-shaped structure with a large center and small ends. When the connector 220 is installed in the pen assembly 100, the connector 220 can also be fixed circumferentially but movable axially. During use, the user drives the operable part 210 to operate, the operable part 210 drives the connecting part 220 to operate along the axial direction of the pen assembly 100, the connecting part 220 drives the nut 320 to rotate, the nut 320 drives the screw 330 to operate along the axial direction of the pen assembly 100, and the elastic part 230 is compressed; when the external force acting on the operable part 210 disappears, the elastic force of the elastic part 230 acts on the operable part 210 to reset it.

[0059] As shown in Figure 6, the inner wall of the connecting member 220 is provided with a protrusion 223, and the outer wall of the nut 320 is provided with a guide groove 321. The protrusion 223 is slidably installed in the guide groove 321. When the connecting member 220 moves axially along the pen assembly 100, the protrusion 223 slides in the guide groove 321 to drive the nut 320 to rotate.

[0060] The protrusions 223 extend radially inward from the coupling 220, and the guide grooves 321 are arranged along the entire circumference of the outer wall of the nut 320. The number of protrusions 223 is not limited; alternatively, the protrusions 223 can be arranged in pairs, with the two protrusions in each pair symmetrically arranged about the axis of the coupling 220. The number of protrusions can also be an odd number, such as 3, 5, or 7. When the number of protrusions is an odd number, the distance between adjacent protrusions 223 is equal. The guide grooves 321 are provided throughout the entire circle of the nut 320. This allows the nut 320 to rotate cyclically by repeatedly actuating the operable member 210, ensuring consistent use of the cosmetic brush.

[0061] As shown in Figure 12, the guide rail groove 321 includes N sequentially connected unit grooves, each of which includes a first beveled groove 322 and a second beveled groove 323. The first beveled groove 322 has two ends connected to a second beveled groove 323, and the second beveled groove 323 has two ends connected to a first beveled groove 322, where N ≥ 2, and N is an integer. In one unit groove, one end of the first beveled groove 322 connects to the second beveled groove 323, and the other end of the first beveled groove 322 connects to the second beveled groove 323 in the adjacent unit groove. Optionally, the width of the first beveled groove 322 and the second beveled groove 323 is greater than the diameter of the protrusion 223, so that the protrusion 223 can slide smoothly within the guide rail groove 321. In one possible embodiment, as shown in Figure 12, the nut 320 has four sequentially connected unit grooves; in another possible embodiment, as shown in Figure 13, the nut 320 has six sequentially connected unit grooves. When the connecting member 220 moves along the axial direction of the pen assembly 100 , the protrusion 223 slides in the first inclined groove 322 or the second inclined groove 323 , applying a circumferential force to the nut 320 , causing the nut 320 to rotate.

[0062] The first inclined groove 322 and the second inclined groove 323 are inclined in opposite directions, and the angle between the first inclined groove 322 and the second inclined groove 323 is a, 0°≤a≤180°. As shown in FIG12 , the first inclined groove 322 and the second inclined groove 323 form a V-shaped structure.

[0063] As shown in Figure 12, the connection between the first bevel groove 322 and the second bevel groove 323 in the same unit groove forms a first transition portion, and the first transition portion is a first arc surface 324. The connection between the first bevel groove 322 and the second bevel groove 323 in the adjacent unit groove forms a second transition portion, and the second transition portion is a second arc surface 325. The projection of the first transition portion along the axial direction of the nut falls on the inclined surface of the second bevel groove 323, and the projection of the second transition portion along the axial direction of the nut falls on the inclined surface of the first bevel groove 322.

[0064] As shown in Figures 5-8, when the operable part 210 is driven, the operable part 210 drives the connecting part 220 to move downward, and the protrusion 223 slides along the first inclined groove 322 to the first arc surface 324. When the operable part 210 is released, the elastic part 230 pushes the connecting part 220 to move upward, and the protrusion moves synchronously into the second inclined groove 323 and slides along the second inclined groove 323 to the second arc surface 325. Then, when the operable part 210 is driven again, the operable part 210 drives the connecting part 220 to move downward, and the protrusion 223 slides over the second arc surface 325 and contacts the inclined surface of another first inclined groove and slides along the other first inclined groove. The above action process is repeated to complete the discharge of the cosmetic material.

[0065] The projection of the first curved surface 324 is positioned on the inclined surface of the second bevel groove 323, and the projection of the second curved surface 325 is positioned on the inclined surface of the first bevel groove 322, so that the protrusion switches between the first and second bevel grooves more smoothly. Optionally, all the first curved surfaces are located in the same circumferential direction of the nut 320, and all the second curved surfaces are located in the same circumferential direction of the nut 320.

[0066] As shown in Figure 13, the inclination angle e of the first bevel groove 322 is greater than the inclination angle f of the second bevel groove 323. The inclination angle of the first bevel groove 322 refers to the angle between the centerline of the inclined surface formed by the first bevel groove on the nut 320 and the axial cross-section of the nut. The inclination angle of the second bevel groove refers to the angle between the centerline of the inclined surface formed by the second bevel groove on the nut 320 and the axial cross-section of the nut. When the operable member 210 is pressed or pushed, the connecting member 220 moves in a direction away from the material carrier, the protrusion 223 slides in the first inclined groove 322, the nut 320 rotates by an angle b, the screw 330, i.e., the length of cosmetic material moved is L1, the protrusion 223 slides over the first arc surface, and the elastic member 230 is compressed; after the operable member 210 is released, the restoring force of the elastic member 230 pushes the connecting member 220 and the operable member 210 to return to their original position, the protrusion 223 slides in the second inclined groove 323, the nut 320 rotates by an angle c, and the screw 330, i.e., the length of cosmetic material moved is L2. Since the inclination angle of the first inclined groove 322 is greater than the inclination angle of the second inclined groove 323, b>c, L1>L2, that is, when the operable member 210 is pressed or pushed, the amount of cosmetic material discharged is large, and after the operable member 210 is released, the amount of cosmetic material discharged during the return process of the operable member 210 is small. Another advantage is that when the inclination angle of the first chute 322 is greater than the inclination angle of the second chute 323, the operating member 210 returns to its original position faster after the operating member 210 is released. Of course, the inclination angle of the first chute 322 can also be designed to be less than or equal to the inclination angle of the second chute 323 as needed.

[0067] The angle d between the second bevel 323 and the axial cross-section of the nut 320 is 0°<d≤5°. This refers to the angle between the centerline of the inclined surface formed by the second bevel 323 on the nut 320 and the axial cross-section of the nut. In this embodiment, the second bevel 323 is set at a very small angle. When the coupling 220 moves forward under the elastic force of the elastic member 230, the nut 320 rotates at a very small angle, and the screw 330, i.e., the length of cosmetic material movement, is also very small. Thus, when the user presses or pushes the operable member 210 during use, the screw 330 moves, discharging cosmetic material. When the operable member 210 is released, the amount of cosmetic material discharged during the resetting process of the elastic member 230 is negligible. This facilitates user control of the cosmetic material discharge length, reduces the risk of cosmetic material contamination, and provides a better user experience. Furthermore, it ensures that the protrusion smoothly switches between the first and second bevels.

[0068] As shown in Figures 2-4, the side wall of the pen assembly 100 is provided with a mounting groove 111, and the operable part 210 is installed in the mounting groove 111. The operable part 210 can move toward the axial direction of the pen assembly 100 under the action of external force. As shown in Figures 2, 10 and 11, the operable part 210 is provided with a first inclined surface 212, and the connecting part 220 is provided with a second inclined surface 222 that matches the first inclined surface 212. As shown in FIG1 , the operable member 210 protrudes from the pen assembly 100 to facilitate a user's pressing of the operable member 210. As shown in FIG10 and FIG11 , the operable member 210 is provided with a first claw 211, a first inclined surface 212 being provided on the first claw 211, and the connecting member 220 is provided with a second claw 221, a second inclined surface 222 being provided on the second claw 221. As shown in FIG2 , when an external force is applied to the operable member 210, the first inclined surface 212 of the operable member 210 acts on the second inclined surface 222 of the connecting member 220, causing the connecting member 220 to move axially along the pen assembly 100. In this embodiment, the operable member 210 is similar to a button; the user can discharge the cosmetic material 350 by simply pressing the operable member 210.

[0069] In one possible embodiment, as shown in Figures 12 and 13, nut 320 is a one-piece nut, which has a simpler structure. In another possible embodiment, as shown in Figure 14, nut 320 is a split structure, comprising a first sub-nut 326 and a second sub-nut 327 fixedly mounted together. The first sub-nut 326 and the second sub-nut 327 are assembled to form a guide groove 321. The first sub-nut 326 and the second sub-nut 327 can be secured by snap-fitting, interference fit, or threading. Split nuts facilitate improved precision control during nut processing.

[0070] As shown in Figures 2-4, the pen assembly 100 includes a pen body 110, a center core 120, and a front cover 130. The center core 120 is fixedly mounted at the first end of the pen body 110, the material carrier 340 is installed within the center core 120, and the front cover 130 is removably mounted on the center core 120. The center core 120 can be fixed to the first end of the pen body 110 by means of snap fastening, interference fit, gluing, etc. The material carrier 340 is placed within the center core 120 and can slide along the inner sidewall of the center core 120.

[0071] As shown in Figures 2-4, the cosmetic brush also includes a makeup assembly 400, which includes a makeup head 410, a makeup head base 420, and a back cover 430. The makeup head 410 is fixedly mounted within the makeup head base 420, which is fixedly mounted to the second end of the pen body 110. The back cover 430 is removably attached to the makeup head base 420. The makeup head base 420 can be secured to the second end of the pen body 110 through snap fastening, interference fit, gluing, or other methods. The makeup head 410 is secured within the makeup head base 420 through gluing, welding, or other methods. The makeup head 410 is provided with bristles, velvet, a liner, or other tools. Therefore, this cosmetic brush can serve two purposes: using the lipstick, lip balm, lip gloss, eyeliner, or other materials in the center bundle for preliminary application, and then using the makeup head 410 for detailed application. Alternatively, two different types of makeup can be performed simultaneously, thereby improving makeup efficiency and saving costs.

[0072] As shown in Figures 2-4, the discharge assembly 300 also includes a nut seat 310, which is fixedly mounted within the pen body 110. A nut 320 is axially fixed and circumferentially movable within the nut seat 310. Specifically, the nut 320 can rotate relative to the nut seat 310 but cannot move axially along the nut seat 310. The nut 320 and the nut seat 310 are rotatably mounted together by engaging multiple sets of ribs, protrusions, and grooves. As shown in Figure 12, in one possible embodiment, the outer wall of the nut 320 is provided with a circle of protrusions 328. As shown in Figure 9, the inner wall of the nut seat 310 is provided with a circle of grooves 311 that match the protrusions 328. During assembly, the protrusions 328 are positioned within the grooves 311. Therefore, the nut 320 cannot move axially along the nut seat 310, but can rotate relative to the nut seat 310.

[0073] As shown in Figures 1-4, in this embodiment, the cosmetic pen includes a pen assembly 100, a driving assembly 200, a discharging assembly 300 and a cosmetic assembly 400. The pen assembly 100 includes a pen body 110, a middle bundle core 120 and a front cover 130. The driving assembly 200 includes an operable part 210, a connecting part 220 and an elastic part 230. The discharging assembly 300 includes a nut seat 310, a nut 320, a screw 330 and a carrier 340. The cosmetic assembly 400 includes a cosmetic head 410, a cosmetic head seat 420 and a back cover 430. The middle bundle core 120 is clamped to the first end of the pen body 110. The middle bundle core 120 is filled with a paste-like cosmetic material 350, such as lipstick, lip gloss, lipstick, etc. The front cover 130 is clamped to the middle bundle core 120 for protecting the cosmetic material 350. The carrier 340 is installed in the middle bundle core 120. The cosmetic material 350 The screw 330 is fixedly connected to the nut 320 by a snap connection or a screw, and the screw 330 is connected to the nut 320 by a threaded transmission. The nut 320 is rotatably mounted on the nut seat 310, and the nut 320 and the nut seat 310 are rotatably connected by the cooperation between the protrusion 328 and the slot 311. The nut seat 310 and the pen body 110 are fixedly connected by a snap connection. The makeup head 410 is fixedly installed in the makeup head seat 420. The makeup head seat 420 is snap-fixed to the second end of the pen body 110, and the rear cover 430 is pluggable and snap-fitted to the makeup head seat 420.

[0074] As shown in Figure 2, the connecting member 220 and the elastic member 230 are sleeved on the nut 320. As shown in Figure 5, a guide groove 321 is provided on the nut 320, and a protrusion 223 is provided on the inner side wall of the connecting member 220. The protrusion 223 is slidably placed in the guide groove 321 of the nut 320. As shown in Figure 2, the first end of the elastic member 230 abuts against the connecting member 220, and the second end of the elastic member 230 abuts against the nut seat 310. The operable member 210 is installed in the mounting groove 111 of the pen body 110. A stopper 213 is provided on the operable member 210 to prevent the operable member 210 from being separated from the pen body 110. The first inclined surface 212 on the operable member 210 cooperates with the second inclined surface on the connecting member 220.

[0075] Example 2: This example differs from Example 1 in that a slide groove is defined along the axial direction of the pen assembly 100, and an operable member 210 is slidably mounted within the groove. When the operable member 210 is moved axially along the pen assembly 100 under the action of an external force, it can drive the coupling member 220 to move synchronously. The operable member 210 and the coupling member 220 are either fixedly connected or integrally formed. Thus, when the user drives the operable member 210 axially along the pen assembly 100, the coupling member 220 synchronously rotates to drive the nut 320 to rotate. In this example, the operable member 210 resembles a slider; the user simply slides the operable member 210 to discharge the cosmetic material 350.

[0076] The operation process of this cosmetic brush, taking Example 1 as an example, includes the following steps:

[0077] Step 1: Initially, as shown in FIG2 , FIG5 and FIG6 , the first inclined surface 212 of the operable member 210 is in contact with the second inclined surface 222 of the coupling member 220 , the protrusion 223 on the coupling member 220 is located at the second arc surface 325 of the nut 320 , and the elastic member 230 is in a natural state;

[0078] Step 2: Remove the front cover 130 and press the operable member 210. The operable member 210 moves toward the inside of the cosmetic brush. The first inclined surface 212 acts on the second inclined surface 222, causing the connecting member 220 to move toward the second end of the pen body 110, that is, the right side in FIG. 2 , and the elastic member 230 is compressed.

[0079] Step 3: The protrusion 223 slides along the first inclined groove 322 to the first arc surface 324, as shown in Figures 7 and 8. The nut 320 rotates to drive the screw 330 toward the first end of the pen body 110, that is, the left side in Figure 2;

[0080] Step 4: When the operable member 210 is released, the elastic member 230 pushes the coupling member 220 toward the left in FIG. 2 . The protrusion 223 simultaneously moves into the second inclined groove 323 and slides along the second inclined groove 323 to the second curved surface 325 . The nut 320 rotates and drives the screw 330 toward the first end of the pen body 110 , i.e., toward the left in FIG. 2 .

[0081] Step 5: At this point, the process of pressing the operable part 210 once is completed. During the process of pressing and releasing the operable part 210, the screw 330 drives the cosmetic material 350 to extend out of the middle bundle core 120 for the user to use. According to the makeup needs, the operable part 210 can be pressed multiple times to control the discharge amount of the cosmetic material. The discharge amount of the cosmetic material each time is very small, thereby reducing the risk of the cosmetic material 350 being contaminated; when the cosmetic material 350 is used up, as shown in Figure 3, the material carrier 340 runs to the open end of the middle bundle core 120.

[0082] The assembly process of this cosmetic brush, taking Example 1 as an example, includes the following steps:

[0083] After the front cover 130 is silver-plated, it is shipped separately. The pen body assembly is assembled by pressing the nut 320 into the nut seat 310, applying oil to the screw 330 and screwing it into the nut 320, placing the elastic member 230 (i.e., spring) into the nut seat 310, and then fitting the connector 220 onto the nut 320. The nut seat 310 and connector 220 are then pressed into the ends of the pen body 110, which has undergone the silver-plating and one-step printing process. The material carrier 340 is then pressed into the screw 330, and the silver-plated operable member 210 (i.e., button) is installed into the pen body 110. The makeup head holder 420 (i.e., bristle holder) is then pressed into the pen body 110, and the makeup head 410 (i.e., bristles) are welded to the bristle holder. Finally, the rear cover 430 is attached to the bristle holder to complete the pen body assembly, which is then shipped as a whole. The above assembly process is merely illustrative and does not limit the entire assembly process.

[0084] The beneficial effects of this application are:

[0085] 1) In this application, since the operable part is located on the side wall of the cosmetic brush, the user can control the discharging of the cosmetic brush with one hand to complete the makeup, so the design of the cosmetic brush is more humane and more convenient to use.

[0086] 2) This application introduces a screw and nut structure into a cosmetic brush, and utilizes a drive assembly to drive the nut and screw to rotate relative to each other, thereby causing the nut and screw to move relative to each other along the axial direction of the pen assembly to achieve the discharge of cosmetic materials. This is very convenient to operate, simplifies the structure of cosmetic brushes that use side operation, and reduces the development and manufacturing costs of cosmetic brushes.

[0087] 3) In the present application, the axial operation of the connecting part is driven by pressing or sliding the operable part, the rotation of the nut is achieved by the cooperation between the protrusion on the connecting part and the guide groove of the nut, and the axial movement of the screw is achieved by the rotation of the nut, thereby realizing the discharge operation of the cosmetic material. Therefore, the present application is ingenious in conception and simple in operation, and the greater the inclination angle of the guide groove, the greater the discharge amount of the cosmetic material. Therefore, the discharge amount of the cosmetic material can be controlled by designing a suitable inclination angle of the guide groove, so that a small amount of cosmetic material can be screwed out for user use as needed, reducing the risk of contamination of the cosmetic material.

[0088] 4) In the present application, a first bevel groove and a second bevel groove are provided on the nut, and a first arc surface and a second arc surface are provided at the connection between the first bevel groove and the second bevel groove. The projection of the first arc surface falls on the inclined surface of the second bevel groove, and the projection of the second arc surface falls on the inclined surface of the first bevel groove, so that the protrusion of the connecting part switches between the first bevel groove and the second bevel groove more smoothly, thereby improving the comfort of users.

[0089] It should be noted that those skilled in the art may make a number of modifications and improvements without departing from the concept of this application, and these modifications and improvements are all within the scope of protection of this application. Therefore, the scope of protection of this patent application shall be based on the appended claims.

Claims

1. A side-operated cosmetic pen, characterized in that: The invention comprises a pen assembly (100), a driving assembly (200) and a discharging assembly (300), wherein the driving assembly (200) is mounted on a side wall of the pen assembly (100), the discharging assembly (300) is mounted in the pen assembly (100), and the discharging assembly (300) comprises a nut (320), a screw rod (330) and a material carrier (340), wherein the nut (320) is screwed to the screw rod (330), and the material carrier (340) is screwed to the screw rod (330). (330) is connected, or the material carrier (340) is connected to the nut (320), the driving assembly (200) drives the nut (320) and the screw rod (330) to rotate relative to each other, and then the nut (320) and the screw rod (330) move relative to each other along the axial direction of the pen assembly (100), and the nut (320) or the screw rod (330) drives the material carrier (340) to move along the axial direction of the pen assembly (100).

2. The side-operated cosmetic brush according to claim 1, characterized in that: The nut (320) is axially fixed and circumferentially movably installed in the pen assembly (100); the driving assembly (200) is transmission-connected with the nut (320) to drive the nut (320) to rotate; the screw rod (330) is axially movably installed in the pen assembly (100); one end of the screw rod (330) is connected to the carrier (340).

3. The side-operated cosmetic brush according to claim 1, characterized in that: The screw rod (330) is axially fixed and circumferentially movably installed in the pen assembly (100); the driving assembly (200) is transmission-connected to the screw rod (330) to drive the screw rod (330) to rotate; the nut (320) is axially movably installed in the pen assembly (100); one end of the nut (320) is connected to the carrier (340).

4. The side-operated cosmetic brush according to claim 2, characterized in that: The driving assembly (200) comprises an operable member (210), a connecting member (220) and an elastic member (230); the operable member (210) is movably mounted on the side wall of the pen assembly (100); the connecting member (220) and the elastic member (230) are sleeved on the nut (320); the operable member (210) can drive the connecting member (220) to move along the axial direction of the pen assembly (100); when the connecting member (220) moves along the axial direction of the pen assembly (100), the nut (320) can be driven to rotate; a first end of the elastic member (230) abuts against the connecting member (220), and a second end of the elastic member (230) abuts against the inside of the pen assembly (100).

5. The side-operated cosmetic brush according to claim 4, characterized in that: The inner side wall of the connecting member (220) is provided with a protrusion (223), and the outer side wall of the nut (320) is provided with a guide groove (321). The protrusion (223) is slidably installed in the guide groove (321). When the connecting member (220) moves axially along the pen assembly (100), the protrusion (223) slides in the guide groove (321) to drive the nut (320) to rotate.

6. The side-operated cosmetic brush according to claim 5, characterized in that: The protrusion (223) extends inwardly in the radial direction of the connecting piece (220), and the guide groove (321) is arranged along the entire circumferential direction of the outer side wall of the nut (320).

7. The side-operated cosmetic brush according to claim 6, characterized in that: The guide rail groove (321) comprises N unit grooves connected in sequence, wherein the unit groove comprises a first inclined groove (322) and a second inclined groove (323), wherein both ends of the first inclined groove (322) are respectively communicated with one of the second inclined grooves (323), and both ends of the second inclined groove (323) are respectively communicated with one of the first inclined grooves (322), wherein N≥2, and N is an integer.

8. The side-operated cosmetic brush according to claim 7, characterized in that: The first inclined groove (322) and the second inclined groove (323) are inclined in opposite directions, and the angle between the first inclined groove (322) and the second inclined groove (323) is a, and 0°≤a≤180°.

9. The side-operated cosmetic brush according to claim 8, characterized in that: The connection between the first bevel groove (322) and the second bevel groove (323) in the same unit groove forms a first transition portion, and the connection between the first bevel groove (322) and the second bevel groove (323) in the adjacent unit groove forms a second transition portion, the projection of the first transition portion along the axial direction of the nut falls on the inclined surface of the second bevel groove (323), and the projection of the second transition portion along the axial direction of the nut falls on the inclined surface of the first bevel groove (322).

10. The side-operated cosmetic brush according to claim 8, characterized in that: The inclination angle e of the first inclined groove (322) is greater than the inclination angle f of the second inclined groove (323).

11. The side-operated cosmetic brush according to claim 8, characterized in that: The angle d between the second inclined groove (323) and the axial cross section of the nut (320) is 0°<d≤5°.

12. The side-operated cosmetic brush according to claim 4, characterized in that: The side wall of the pen assembly (100) is provided with a mounting groove (111), the operable member (210) is installed in the mounting groove (111), the operable member (210) can move towards the axial direction of the pen assembly (100) under the action of an external force, the operable member (210) is provided with a first inclined surface (212), and the connecting member (220) is provided with a second inclined surface (222) matching the first inclined surface (212).

13. The side-operated cosmetic brush according to claim 4, characterized in that: A sliding groove is provided in the axial direction of the pen assembly (100), and the operable member (210) is slidably installed in the sliding groove. When the operable member (210) moves in the axial direction of the pen assembly (100) under the action of an external force, it can drive the connecting member (220) to move synchronously.

14. The side-operated cosmetic brush according to claim 5, characterized in that: The nut (320) is an integrated nut; or, the nut (320) includes a first sub-nut (326) and a second sub-nut (327) fixedly mounted together, and the first sub-nut (326) and the second sub-nut (327) are assembled to form the guide rail groove (321).

15. The side-operated cosmetic brush according to any one of claims 1 to 14, characterized in that: The pen assembly (100) comprises a pen body (110), a middle beam core (120) and a front cover (130); the middle beam core (120) is fixedly mounted on a first end of the pen body (110); the material carrier (340) is mounted in the middle beam core (120); and the front cover (130) is pluggable and covers the middle beam core (120).

16. The side-operated cosmetic brush according to claim 15, characterized in that: The invention also comprises a makeup component (400), wherein the makeup component (400) comprises a makeup head (410), a makeup head seat (420) and a back cover (430), wherein the makeup head (410) is fixedly mounted in the makeup head seat (420), the makeup head seat (420) is fixedly mounted on the second end of the pen body (110), and the back cover (430) is pluggably covered on the makeup head seat (420).

17. The side-operated cosmetic brush according to claim 15, characterized in that: The discharge assembly (300) further comprises a nut seat (310), wherein the nut seat (310) is fixedly installed in the pen body (110), and the nut (320) is axially fixed and circumferentially movably installed in the nut seat (310).

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