Back-rotating cosmetic brush

Abstract

The utility model discloses a backward rotation type cosmetic brush, which comprises a brush holder, a brush seat and a refill, a refill cavity is arranged in the brush holder, an outlet communicated with the outside is arranged at the upper end of the refill cavity, a convex ring is arranged on the outer circumferential surface of the brush seat, the brush seat is divided into an inserting part and a rotating part, and the rotating part is arranged on the outer circumferential surface of the brush seat. The pen holder is buckled on the insertion part of the brush seat, the end face of the pen holder is in contact with the front end face of the convex ring and is stopped and limited by the convex ring, a containing cavity communicated with the refill cavity is formed in the insertion part, a push rod is arranged in the containing cavity, and the push rod is connected with the refill and drives the upper end of the refill to extend out of the refill cavity from the outlet. And a positioning piece capable of accurately controlling the extending length of the refill is arranged at the root of the insertion part. The positioning piece is arranged on the brush seat, so that a user only needs to rotate the brush seat to a proper position, and the length of the refill can be accurately adjusted. And meanwhile, the rotation process has clear feedback, so that the use experience of the user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cosmetics, in particular to a rear-rotating cosmetic pen. Background Art

[0002] Eyebrow pencil is a cosmetic product for drawing eyebrows. Modern eyebrow pencils come in two forms, one is a pencil type and the other is a push tube type, and when used, the pencil core is pushed out to draw eyebrows.

[0003] The push-tube eyebrow pencil drives the internal spiral rod to push the pen core out of the pen barrel by rotating the brush holder relative to the pen barrel. However, the extension length of the pen core cannot be accurately controlled when rotating the brush holder, and the user may unconsciously squeeze out too much pen core, which not only increases the cost of use, but also causes unnecessary waste. At the same time, the user may directly touch the unused part during use, increasing the risk of bacteria or other contaminants contacting the pen core, thereby causing the pen core to be contaminated; and it is difficult to accurately control the amount of makeup used, which will cause the makeup to appear too heavy or unnatural, especially in areas that require delicate treatment, such as eyeliner, eyebrows, etc., it is difficult to achieve the ideal makeup effect. This will affect the user's comfort and satisfaction. Utility Model Content

[0004] The utility model aims to provide a rear-rotating cosmetic brush, which can accurately control the extension length of the pen core when the brush holder is rotated.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A rear-rotating cosmetic brush comprises a pen holder, a brush holder and a refill, the pen holder having a refill cavity, the upper end of the refill cavity being provided with an outlet communicating with the outside, the outer circumferential surface of the brush holder being provided with a convex ring, dividing the brush holder into an insertion portion and a rotating portion, the pen holder being buckled on the insertion portion of the brush holder and its end face being in contact with the front end face of the convex ring and being stopped and limited by the convex ring, the insertion portion having an accommodating cavity communicating with the refill cavity, the accommodating cavity being provided with a push rod, the push rod being connected with the refill and driving the upper end of the refill to extend out of the refill cavity from the outlet, the root of the insertion portion being provided with a positioning member capable of accurately controlling the extension length of the refill, the positioning member comprising a spring sheet and a ball head, the outer circumferential surface of the root of the insertion portion being provided with an installation groove, the spring sheet being arranged in the installation groove, the ball head being mounted on the spring sheet and partially protruding out of the installation groove, and a plurality of positioning grooves cooperating with the ball head being distributed at intervals on the inner wall of the refill cavity.

[0007] By adopting the above technical solution, by arranging the positioning piece on the brush holder, the ball head of the positioning piece will give a sense of frustration every time it enters the next positioning slot from one positioning slot, and each sense of frustration will make the pen core extend to the standard length of the pen shaft, so that the extension length of the pen core can be accurately controlled. Accurate extension of the pen core can make it easier for users to control the amount of use, which not only helps to achieve a more delicate and natural makeup effect, but also saves cosmetics and maintains hygiene.

[0008] In a specific implementation manner of the utility model: a plurality of convex ridges are spaced apart on the inner wall of the refill cavity, and two adjacent convex ridges form the positioning groove.

[0009] In a specific implementation manner of the utility model: the convex edge surface is an arc surface.

[0010] In a specific implementation manner of the utility model: the push rod includes a screw portion arranged in the accommodating cavity, and an internal thread meshing with the screw portion is provided on the inner wall of the accommodating cavity.

[0011] In a specific implementation manner of the utility model: the front end of the screw portion has a rotation-stopping portion, and a clamping groove is vertically arranged on the inner wall of the pen core cavity, and the rotation-stopping portion is clamped into the clamping groove.

[0012] In a specific implementation manner of the utility model: the front end of the anti-rotation part has a core fixing part for fixing the core, and the core fixing part is composed of two clamping plates arranged opposite to each other.

[0013] In a specific implementation manner of the utility model: a stop step is provided at the upper end of the card slot in the pen core cavity.

[0014] In a specific implementation manner of the utility model: the rotating part has a fixed cavity inside, and the fixed cavity is provided with bristles extending outward from the fixed cavity.

[0015] In a specific implementation manner of the utility model: it also includes a pen cover and a brush cover, the pen cover is covered on the front part of the pen barrel to cover the outlet at the upper end of the pen barrel, the brush cover is covered on the rotating part of the brush holder, and the bristles are located in the brush cover.

[0016] In a specific implementation manner of the utility model: a sealing ring is provided between the pen cover and the pen holder, and between the pen holder and the insertion portion of the brush holder.

[0017] In summary, by setting a positioning piece on the brush holder, the user only needs to rotate the brush holder to a suitable position to get the length of the refill adjusted accurately. At the same time, the rotation process has clear feedback, which improves the user experience. Moreover, accurately extending the refill can make it easier for the user to control the amount used, which not only helps to achieve a more delicate and natural makeup effect, but also saves cosmetics and maintains hygiene. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 This is a schematic structural diagram of a rear-rotating cosmetic brush of the utility model;

[0020] Figure 2 This is a cross-sectional view of the makeup part of the utility model;

[0021] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0022] Figure 4 yes Figure 2 Sectional view at CC;

[0023] Figure 5 yes Figure 2 The enlarged view of point B in the middle;

[0024] Figure 6 yes Figure 2 Cross-sectional view at DD in the middle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 2 As shown, the utility model is a rear-rotating cosmetic brush, comprising a pen holder 10, a brush holder 20 and a pen core (not shown in the figure). The pen holder 10 is divided into a pen head 101 and a rod body 102.

[0027] The pen holder 10 has a core cavity 11. An outlet 12 communicating with the outside is provided at the upper end of the core cavity 11. The core cavity 11 is divided into a first section 111, a second section 112, and a third section 113 from top to bottom. The diameter of the second section 112 is greater than the diameter of the first section 111, so that a stop step 114 is formed at the junction of the second section 112 and the first section 111.

[0028] The brush holder 20 is installed at the rear of the pen holder 10 and can rotate relative to the pen holder 10. A convex ring 24 is provided on the outer circumferential surface of the brush holder 20, dividing the brush holder 20 into an insertion portion 25 and a rotating portion 26. The insertion portion 25 is inserted into the refill cavity 11. The insertion portion 25 has a receiving cavity 21 that communicates with the refill cavity 11. The rotating portion 26 has a fixed cavity 22, and bristles 27 extending out of the fixed cavity are provided in the fixed cavity 22. When the pen holder 10 is buckled on the insertion portion 25 of the brush holder 20 and its rear end face abuts against the front end face of the convex ring 24, it is stopped and limited by the convex ring 24.

[0029] A push rod is provided in the accommodating chamber 21. The push rod is connected to the pen core and drives the pen core to extend out of the pen core chamber 11 from the outlet 12.

[0030] like Figure 2 As shown, the push rod is divided into a screw portion 23 , a rotation-stopping portion 231 located at the front end of the screw portion 23 , and a lead fixing portion located at the front end of the rotation-stopping portion 231 .

[0031] The screw portion 23 is located in the accommodating chamber 21 , and an internal thread meshing with the screw 23 is provided at the upper end of the inner wall of the accommodating chamber 21 .

[0032] like Figure 2 , Figure 3 and Figure 4 As shown, the left and right sides of the inner wall of the second section 112 are provided with a slot 115 extending in the axial direction. The upper end of the slot 115 extends to the stop step 114. In this way, the anti-rotation part 231 is assembled in the second section 112, and the left and right sides of the anti-rotation part 231 have protrusions 232 protruding outwards to be inserted into the corresponding slot 115, so that the push rod can only move axially along the slot 115, and cannot rotate in the pen head 101. At the same time, the stop step 114 can stop and limit the anti-rotation part 231.

[0033] like Figure 2 and Figure 3 As shown, the pen core fixing part is composed of two arc-shaped clamping plates 30 fixed on the anti-rotation part 231 and arranged opposite to each other. The two clamping plates 30 can clamp the pen core. In this way, the rotation of the brush holder 20 can drive the push rod to move up and down, thereby pushing the pen core to be exposed outside the pen head 101 or retracted into the pen body 10.

[0034] like Figure 2 As shown, a positioning member 40 capable of controlling the extension length of the pen core is provided at the root of the insertion portion 25 of the brush holder 20 .

[0035] like Figure 2 , Figure 5 and Figure 6As shown, the positioning member 40 includes a spring piece 421 and a ball head 41. A mounting groove 42 is provided on the outer circumferential surface of the root of the insertion portion 25. The spring piece 421 is formed by a thin-walled plate located at the bottom of the mounting groove 42. The ball head 41 is arranged on the spring piece 421 and partially protrudes out of the mounting groove 42. The ball head 41 and the spring piece 421 are an integrally formed structure. A plurality of ridges 43 are evenly spaced on the inner wall of the refill cavity 11. The surface of the ridge 43 is an arc surface. Two adjacent ridges 43 form a positioning groove 44. In this embodiment, the number of positioning members 40 is two. The number of mounting grooves 42 is two, which are symmetrically arranged on the outer circumferential surface of the root of the insertion portion 25. The positioning members 40 are respectively located in the corresponding mounting grooves 42. Since the wall thickness of the spring piece 421 is thinner than the wall thickness of the surrounding rod body, the spring piece 421 has a certain elasticity.

[0036] The utility model rotates the brush holder 20 relative to the pen holder 10, and the push rod pushes the pen core out of the pen holder through the outlet under the meshing action of the screw portion 23 and the internal thread of the accommodating cavity. In this way, when the brush holder 20 is rotated relative to the pen holder 10, the ball head 41 will be squeezed by the convex ridge 43, and the spring piece 421 will deflect inward and generate elasticity, so that the ball head 41 can enter the next positioning groove 44 from the current positioning groove 44. When the ball head 41 enters the next positioning groove 44, the ball head 41 will rebound under the elastic force of the spring piece 421. Therefore, when the brush holder 20 is rotated relative to the pen holder 10, each time the ball head enters the next positioning groove from one positioning groove, it will give people a sense of frustration, and each sense of frustration will make the pen core extend to the standard length of the pen holder, so that the length of the pen core extension can be accurately controlled.

[0037] like Figure 1 and Figure 2 As shown, the brush holder 20 further comprises a pen cap 9 and a brush cap 8. The pen cap 9 is covered on the pen head 101 of the pen holder 10. The brush cap 8 is covered on the rotating part 26 of the brush holder 20.

[0038] like Figure 5 As shown, a ring-shaped convex ring 28 is provided on the inner wall of the tail of the pen holder 10. An annular groove 29 matching the convex ring 28 is provided around the insertion part of the brush cover 8. In this way, the convex ring 28 is inserted into the annular groove 29, so that the brush holder 20 and the pen holder 10 are not easy to fall off and the rotation of the brush holder 20 relative to the pen holder 10 is not hindered.

[0039] like Figure 2 As shown, a sealing ring 7 is provided between the pen cap 9 and the tail of the pen tip 101 , and between the tail of the rod body 102 and the tail of the insertion portion 25 .

[0040] In summary, by setting a positioning piece on the brush holder, the user only needs to rotate the brush holder to a suitable position to get the length of the refill adjusted accurately. At the same time, the rotation process has clear feedback, which improves the user experience. Moreover, accurately extending the refill can make it easier for the user to control the amount used, which not only helps to achieve a more delicate and natural makeup effect, but also saves cosmetics and maintains hygiene.

[0041] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A rear-rotating cosmetic brush, comprising a pen holder, a brush holder and a refill, wherein the pen holder has a refill cavity, the upper end of the refill cavity is provided with an outlet communicating with the outside, the outer circumferential surface of the brush holder is provided with a convex ring, the brush holder is divided into an insertion portion and a rotating portion, the pen holder is buckled on the insertion portion of the brush holder and its end face contacts the front end face of the convex ring and is stopped and limited by the convex ring, the insertion portion has a receiving cavity communicating with the refill cavity, a push rod is provided in the receiving cavity, the push rod is connected to the refill and drives the upper end of the refill to extend out of the refill cavity from the outlet, characterized in that A positioning piece capable of accurately controlling the extension length of the refill is provided at the root of the insertion part, the positioning piece comprises a spring sheet and a ball head, a mounting groove is provided on the outer circumferential surface of the root of the insertion part, the spring sheet is arranged in the mounting groove, the ball head is installed on the spring sheet and partially protrudes out of the mounting groove, and a plurality of positioning grooves matching the ball head are spaced apart and distributed on the inner wall of the refill cavity.

2. The back-spinning cosmetic brush according to claim 1, characterized in that: A plurality of convex ridges are spaced apart on the inner wall of the pen core cavity, and two adjacent convex ridges form the positioning groove.

3. The rear-spinning cosmetic brush according to claim 2, characterized in that: The convex ridge surface is an arc surface.

4. The rear-spinning cosmetic brush according to claim 1, characterized in that: The push rod comprises a screw rod portion arranged in the accommodating cavity, and an internal thread meshing with the screw rod portion is arranged on the inner wall of the accommodating cavity.

5. The rear-spinning cosmetic brush according to claim 4, characterized in that: The front end of the screw part is provided with a rotation-stopping part, and a clamping groove is vertically arranged on the inner wall of the pen core cavity, and the rotation-stopping part is clamped into the clamping groove.

6. The rear-spinning cosmetic brush according to claim 5, characterized in that: The front end of the anti-rotation part is provided with a core fixing part for fixing the core, and the core fixing part is composed of two clamping plates arranged opposite to each other.

7. The rear-spinning cosmetic brush according to claim 5, characterized in that: A stop step is provided at the upper end of the card slot in the pen core cavity.

8. The rear-spinning cosmetic brush according to claim 1, characterized in that: The rotating part is provided with a fixed cavity, and bristles are arranged in the fixed cavity.

9. The rear-spinning cosmetic brush according to claim 8, characterized in that: It also includes a pen cover and a brush cover, wherein the pen cover is closed on the front part of the pen shaft to cover the outlet at the upper end of the pen shaft, and the brush cover is closed on the rotating part of the brush seat, and the bristles are located in the brush cover.

10. The rear-spinning cosmetic brush according to claim 9, characterized in that: Sealing rings are arranged between the pen cover and the pen holder, and between the pen holder and the inserting portion of the brush holder.

Images