Cosmetic pencil with non-return function

Abstract

The utility model discloses a make-up pen with a non-return function, which comprises a make-up pen body and a lifting mechanism, the lifting mechanism can rotate in the make-up pen body and lift up materials in a containing cavity of the make-up pen body, and a non-return structure is further arranged between the make-up pen body and the lifting mechanism. The non-return structure comprises a first non-return piece and a second non-return piece, and when the lifting mechanism rotates, the first non-return piece and the second non-return piece are matched in a wedge-shaped stopping mode. The cosmetic brush has the advantages that the first non-return piece and the second non-return piece are matched in a stopping mode, cosmetic materials in the cosmetic brush can only move upwards under the interaction of the first non-return piece and the second non-return piece, and the effects that the rotating shaft is prevented from rotating back and the materials are prevented from retracting when viscous liquid leaks are achieved.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic pen technology, and in particular to a cosmetic pen with a backflow prevention function. Background Technology

[0002] Traditional rotary makeup pens (such as eyebrow pencils, lip liners, concealer pens, lipsticks, etc.) rely on the rotation of the pen body to push the material to the pen tip. The material is twisted out when needed and twisted back in after use.

[0003] However, the following key problems exist in actual use: the rotating mechanism lacks an effective anti-reverse design, and reverse rotation or accidental collision can easily cause the material to retract, with a retraction amount of 0.5-3mm. Low-viscosity liquids are prone to leakage at the threaded fit gap, such as the solvent penetration rate of liquid eyebrow pencils >5μL / min. Under high temperature environment (>40℃), the expansion of the paste generates a reverse force, causing the rotating shaft to rotate backward. Therefore, it is necessary to design a makeup pen that can only rotate in one direction to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a cosmetic pen with a backflow prevention function, which allows the cosmetic material in the pen to move only upwards, preventing the rotating shaft from rotating backwards and preventing the material from retracting when viscous liquids leak out.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cosmetic pen with anti-reverse function, comprising a cosmetic pen body and a lifting mechanism, wherein the lifting mechanism is capable of rotating within the cosmetic pen body and lifting and jacking up the material in the cavity of the cosmetic pen body, characterized in that: an anti-reverse structure is further provided between the cosmetic pen body and the lifting mechanism, the anti-reverse structure comprising a first anti-reverse member and a second anti-reverse member, wherein when the lifting mechanism rotates, the first anti-reverse member and the second anti-reverse member engage with a wedge-shaped stop.

[0006] By adopting the above technical solution, the cosmetic material in the makeup brush can only move upward under the interaction of the first and second anti-reverse components, preventing the rotating shaft from rotating backward and the material from retracting when leaking viscous liquid. When the wedge anti-reverse device rotates, it can ensure the anti-reverse effect while ensuring that the material rises evenly. Moreover, the "clicking" sound of the device can help users better grasp the rotation rhythm and reduce the error of over-rotation.

[0007] A further feature of this invention is that the first anti-reverse component is a wedge-shaped block, and the second anti-reverse component is a wedge-shaped column.

[0008] By adopting the above technical solution, the wedge-shaped stop of the first and second anti-reverse components can be completed.

[0009] A further feature of this invention is that the first anti-reverse component is disposed on the inner wall of the lifting mechanism, and the second anti-reverse component is disposed on the outer wall of the makeup brush body, wherein the second anti-reverse component is movably disposed relative to the outer wall of the lifting mechanism.

[0010] By adopting the above technical solution, a rotating lifting mechanism can be realized, with a wedge-shaped stop between the first anti-reverse component and the second anti-reverse component.

[0011] A further feature of this invention is that a hollow groove is provided on the outer wall of the lifting mechanism, and an arc-shaped piece extends toward the inside of one of the groove walls, with the second anti-reverse component protruding from the outer surface of the arc-shaped piece.

[0012] By adopting the above technical solution, when the second anti-reverse component is subjected to the force of the first anti-reverse component during the rotation process, the arc-shaped piece deforms and bends inward, carrying the second anti-reverse component to move inward, so that the second anti-reverse component can pass over the first anti-reverse component and complete the rotation function.

[0013] A further feature of this invention is that the first anti-reverse component is provided with an elastic clamp, and the first anti-reverse component and the second anti-reverse component are engaged by the elastic clamp.

[0014] By adopting the above technical solutions, the wear of the locking teeth due to material limitations can be reduced, thus reducing the failure of the anti-reverse mechanism. It can also reduce the noise during rotation operation, improve the fixing effect, and better prevent the rotating shaft from rotating backward.

[0015] A further feature of this invention is that a plurality of grooves are formed between the first anti-reverse members, and a damping member is provided circumferentially on the inner wall of each groove.

[0016] By adopting the above technical solutions, the wear of the locking teeth due to material limitations can be reduced, thus reducing the failure of the anti-reverse mechanism. It can also reduce the noise during rotation operation, improve the fixing effect, and better prevent the rotating shaft from rotating backward.

[0017] A further feature of this invention is that the lifting mechanism includes a screw and a rotating component, wherein the screw is threadedly connected to the rotating component.

[0018] By adopting the above technical solution, the lifting mechanism was able to rise.

[0019] A further feature of this invention is that a limiting rib is provided circumferentially on the inner sidewall of the rotating component, and the makeup brush body and the rotating component are limited and engaged by the limiting rib.

[0020] By adopting the above technical solution, the range of motion of the makeup pen body is limited, ensuring that it is in a specific position and preventing excessive displacement or misalignment.

[0021] A further feature of this invention is that the outer periphery of the screw has two symmetrical smooth surfaces, and the smooth surfaces are connected by a threaded surface.

[0022] By adopting the above technical solution, the friction between the screw and the rotating parts is reduced, and a lock nut or other anti-loosening measures can be installed on the unthreaded side to enhance the stability of the connection.

[0023] A further feature of this invention is that the makeup pen body includes an upper chamber and a lower chamber, the second anti-reverse component is disposed on the side wall of the lower chamber, and the makeup material is placed in the upper chamber.

[0024] By adopting the above technical solution, the advantage of a compact structure is achieved.

[0025] In summary, this utility model has the following beneficial effects:

[0026] 1. The device employs a wedge-shaped stop with a first and a second anti-reverse component. Under the interaction of the first and second anti-reverse components, the cosmetic material in the makeup brush can only move upwards, preventing the rotating shaft from rotating backwards and the material from retracting when viscous liquids leak. When the wedge-shaped anti-reverse device rotates, it ensures the anti-reverse effect while also ensuring that the material rises evenly. Moreover, the "clicking" sound of the device helps users better control the rotation rhythm and reduces the error of over-rotation. The anti-reverse function is achieved with fewer parts, simplifying the overall structure and providing high structural stability.

[0027] 2. The first anti-reverse component is equipped with an elastic clamp. The first anti-reverse component and the second anti-reverse component are engaged by the elastic clamp. This can reduce the wear of the clamping teeth due to material limitations, thus reducing anti-reverse failure. It can also reduce noise during rotation operation, provide better fixation, and better prevent the rotating shaft from rotating backward.

[0028] 3. The first anti-reverse component has several grooves formed between them, and each groove is equipped with a damping component. This can reduce the wear of the locking teeth due to material limitations, which would lead to anti-reverse failure, and can also reduce the noise generated during rotation operation. Attached Figure Description

[0029] Figure 1 This is a vertical sectional view of the present invention.

[0030] Figure 2 This is an exploded view of this utility model.

[0031] Figure 3 This is a utility model Figure 1 A sectional view of CC.

[0032] Figure 4This is a cross-sectional view of Embodiment 2 CC of this utility model.

[0033] Figure 5 This is a utility model Figure 4 A magnified view of A in the middle.

[0034] Figure 6 This is a perspective view of Embodiment 3 of this utility model.

[0035] In the diagram: 1. Makeup brush body; 2. Lifting mechanism; 3. Anti-reverse structure; 31. First anti-reverse component; 32. Second anti-reverse component; 20. Hollowed-out groove; 201. Arc-shaped piece; 311. Elastic clamp; 312. Groove; 313. Damping component; 21. Screw; 22. Rotating component; 211. Display platform; 212. Limiting rib; 213. Smooth surface; 101. Upper chamber; 102. Lower chamber; 11. Transparent window. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] Example 1: A cosmetic pen with anti-reverse function, such as Figure 1-3 As shown, it includes a makeup brush body 1 and a lifting mechanism 2. The lifting mechanism 2 can rotate inside the makeup brush body 1 and lift the material in the cavity of the makeup brush body 1. A check structure 3 is also provided between the makeup brush body 1 and the lifting mechanism 2. The check structure 3 includes a first check member 31 and a second check member 32. When the lifting mechanism 2 rotates, the first check member 31 and the second check member 32 are engaged with a wedge-shaped stop.

[0038] The second anti-reverse component 32 begins to move under the drive of the lifting mechanism. When the second anti-reverse component 32 is inserted into the groove between two adjacent first anti-reverse components 31 during the movement, the force of the inclined surfaces of the second anti-reverse component 32 and the first anti-reverse component 31 presses the second anti-reverse component 32 tightly, preventing it from moving.

[0039] The first check valve 31 is a wedge-shaped block, and the second check valve 32 is a wedge-shaped column.

[0040] The main body of the wedge block is a block structure, thicker at one end and thinner at the other, forming an inclined surface. The main body of the wedge column is a column structure with a wedge-shaped cross-section, larger diameter at one end and smaller diameter at the other, forming an inclined surface extending along the axial direction. The inclined surface of the wedge block and the inclined surface of the wedge column cooperate with each other and are combined by insertion.

[0041] The first anti-reverse component 31 is disposed on the inner side wall of the lifting mechanism 2, and the second anti-reverse component 32 is disposed on the outer side wall of the makeup brush body 1. The second anti-reverse component 32 is movably disposed relative to the outer side wall of the lifting mechanism 2. A hollow groove 20 is provided on the outer side wall of the lifting mechanism 20, and an arc-shaped piece 201 extends into the groove from one of the groove walls. The second anti-reverse component 32 protrudes from the outer surface of the arc-shaped piece 201.

[0042] During the rotation of the arc-shaped piece 201, when the second anti-reverse member 32 is subjected to the force of the first anti-reverse member 31, the arc-shaped piece 201 deforms and bends inward, causing the second anti-reverse member 32 to move inward, thereby enabling the second anti-reverse member 32 to pass over the first anti-reverse member 31 and complete the rotation function.

[0043] The lifting mechanism 2 includes a screw 21 and a rotating component 22. The screw 21 is threadedly connected to the rotating component 22. A limiting rib 212 is provided circumferentially on the inner side wall of the rotating component 22. The makeup pen body 1 and the rotating component 22 are limited and matched by the limiting rib 212.

[0044] Since the inner wall of the rotating part is provided with a limiting rib in the circumferential direction, it is equivalent to setting several rings of protrusions on the inner wall of the rotating part. The outer periphery of the makeup pen body 1 is provided with a limiting groove corresponding to the limiting rib 212. Under the restriction of the limiting rib, the makeup pen body can only move circumferentially along the protrusion.

[0045] The screw 21 has two symmetrical smooth surfaces 213 on its outer periphery, and the smooth surfaces 213 are configured as a threaded surface.

[0046] Two smooth surfaces 213 are formed by cutting the outer periphery of the screw 21 along the axial direction, so that the area of ​​the smooth surface 213 does not contact the thread in the rotating part 22, and only the thread surface is screwed to the rotating part 22, thereby reducing the contact area. The advantage of setting the smooth surface 213 on the screw 21 is to reduce the friction between the screw 21 and the rotating part 22, and the smooth surface 213 can be fitted with a lock nut or other anti-loosening measures to enhance the stability of the connection.

[0047] The makeup brush body 1 includes an upper chamber 101 and a lower chamber 102. The second anti-reverse component 32 is disposed on the side wall of the lower chamber 102. Makeup materials are placed in the upper chamber 101. A shelf 211 is disposed above the screw 21.

[0048] The upper chamber 101 and the lower chamber 102 are separated by a baffle (not shown in the figure) inside the makeup brush body 1. The baffle is located in the middle of the makeup brush body 1 and can be integrally formed with the makeup brush body 1. The baffle has a through hole for the screw to pass through. The makeup brush body 1 is located above the baffle to form the upper chamber 101, and the lower chamber 102 is located below the baffle. The second anti-reverse component 32 is set on the side wall of the lower chamber 102, and the rotating component 22 is sleeved on the side wall of the lower chamber 102. The anti-reverse function is completed in the lower chamber 102. The upper chamber 101 stores the makeup materials. Due to the anti-reverse structure, the makeup materials will not fall after use. Therefore, the height of the upper chamber 101 needs to be designed to be at least the same as the length of the makeup materials in order to store the makeup materials. The design of the shelf 211 makes the overall structure more compact. The design of the upper and lower chambers can clearly divide the functional areas and reduce mutual interference.

[0049] The basic working principle of this utility model is as follows: When the rotating component is rotated, the screw 21 and the rotating component 22 are threadedly connected, and relative movement occurs between the screw 21 and the rotating component 22 in the axial direction. Since the rotating component 22 does not produce displacement in the axial direction, the screw 21 moves upward under the drive of the rotating component 22. A platform 211 is provided on the screw 21, and cosmetic materials are placed on the platform 211. Therefore, the screw 21 drives the cosmetic materials to move upward. During the rotation and lifting process of the screw 21, since the first anti-reverse component 31 and the second anti-reverse component 32 are wedge-shaped stops, a one-way limit is formed. Therefore, the lifting mechanism 2 cannot rotate back. In this way, while ensuring the anti-reverse effect, it can also ensure that the material rises evenly. Moreover, the "clicking" sound of engagement can also help the user better grasp the rotation rhythm and reduce the error of over-rotation.

[0050] Example 2: A cosmetic pen with anti-reverse function, such as Figure 4-5 As shown, the difference between this embodiment and specific embodiment one is that: the first anti-reverse member 31 is provided with an elastic clamp 311, the first anti-reverse member 31 and the second anti-reverse member 32 are engaged by the elastic clamp 311, a plurality of grooves 312 are formed between the first anti-reverse members 31, and the elastic clamp 311 is an elastic protrusion provided on the first anti-reverse member 31 along the circumferential direction, so that the gap between two adjacent first anti-reverse members 31 is reduced;

[0051] When the lifting mechanism 2 is rotated, the second anti-reverse component 32 begins to move under the drive of the first anti-reverse component 31 in the lifting mechanism 2. The clamping gap of the elastic chuck 311 is less than the length of the head of the second anti-reverse component 32 when it enters the groove 312. Therefore, when the second anti-reverse component 32 moves into the groove 312, the elastic chuck 311 will firmly clamp the second anti-reverse component 32. This structure will greatly increase the stability of the movement and achieve the anti-reverse effect better. It can reduce the wear of the tooth due to material limitations and thus the failure of the anti-reverse function. It can reduce the noise brought by the rotation operation and the fixing effect is better, preventing the rotating shaft from rotating back.

[0052] Example 3: A cosmetic pen with anti-reverse function, such as Figure 4-5 As shown, the difference between this embodiment and specific embodiment one is that each groove 312 has a damping element 313 circumferentially arranged on its inner wall. The damping element 313 can be made of rubber. Due to the presence of the damping element 313 on the inner wall of the groove 312, the coefficient of friction on the inner wall is greatly increased. When the lifting mechanism 2 is rotated, the second anti-reverse member 32 starts to move under the drive of the first anti-reverse member 31 in the lifting mechanism 2. When the second anti-reverse member 32 moves into the groove 312 and contacts the damping element 313 in the groove 312, the damping element 313 buffers the power of the second anti-reverse member 32, and the second anti-reverse member 32 will not directly contact the inner wall to generate mechanical collision noise. This can reduce the wear of the locking teeth due to material limitations and thus reduce the anti-reverse failure, reduce the noise during rotation operation, and improve the fixing effect, preventing the rotating shaft from rotating backward.

[0053] Example 4: A cosmetic pen with anti-reverse function, such as Figure 6 As shown, the difference between this embodiment and specific embodiment one is that a transparent window 11 is provided through the side wall of the makeup pen body 1, and the transparent window 11 is provided with a scale. Since the makeup material can only be twisted out and not twisted in, the usage of the makeup material cannot be directly observed by twisting in and out as with conventional makeup pen operations. Therefore, adding a transparent window 11 allows for better observation of the usage of the makeup material, especially for makeup pens with a backstop function. The scale on the transparent window 11 allows the usage of the makeup material to be visualized numerically, making it easier for users to calculate the usage time and the estimated usage time.

[0054] It should also be noted that the cosmetic pen described in this utility model specification does not only refer to pen-shaped cosmetics such as eyebrow pencils, lip liner pencils, and concealer pencils, but also cosmetics such as lipsticks that can be raised by rotating components.

[0055] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A cosmetic pen with a backflow prevention function, comprising a cosmetic pen body (1) and a lifting mechanism (2), wherein the lifting mechanism (2) is capable of rotating within the cosmetic pen body (1) and lifting and jacking up the material within the cavity of the cosmetic pen body (1), characterized in that: A non-reverse structure (3) is also provided between the body of the makeup brush (1) and the lifting mechanism (2). The non-reverse structure (3) includes a first non-reverse member (31) and a second non-reverse member (32). When the lifting mechanism (2) rotates, the first non-reverse member (31) and the second non-reverse member (32) are engaged with a wedge-shaped stop.

2. A cosmetic pen with anti-reverse function according to claim 1, characterized in that: The first check valve (31) is a wedge block, and the second check valve (32) is a wedge column.

3. A cosmetic pen with anti-reverse function according to claim 1, characterized in that: The first anti-reverse component (31) is disposed on the inner side wall of the lifting mechanism (2), and the second anti-reverse component (32) is disposed on the outer side wall of the makeup brush body (1). The second anti-reverse component (32) is movably disposed relative to the outer wall of the lifting mechanism (2).

4. A cosmetic pen with anti-reverse function according to claim 3, characterized in that: The lifting mechanism (2) has a hollowed-out groove (20) on its outer side wall. An arc-shaped piece (201) extends into the groove from one of the groove walls. The second anti-reverse component (32) protrudes from the outer surface of the arc-shaped piece (201).

5. A cosmetic pen with anti-reverse function according to claim 1, characterized in that: The first anti-reverse component (31) is provided with an elastic clamp (311), and the first anti-reverse component (31) and the second anti-reverse component (32) are engaged by the elastic clamp (311).

6. A cosmetic pen with anti-reverse function according to claim 5, characterized in that: A plurality of grooves (312) are formed between the first anti-reverse members (31), and a damping member (313) is provided circumferentially on the inner wall of each groove (312).

7. A cosmetic pen with anti-reverse function according to claim 1, characterized in that: The lifting mechanism (2) includes a screw (21) and a rotating component (22), wherein the screw (21) is threadedly connected to the rotating component (22).

8. A cosmetic pen with anti-reverse function according to claim 7, characterized in that: The inner sidewall of the rotating component (22) is provided with a limiting rib (212) in the circumferential direction, and the makeup brush body (1) and the rotating component (22) are limited and matched by the limiting rib (212).

9. A cosmetic pen with anti-reverse function according to claim 7, characterized in that: The screw (21) has two symmetrical smooth surfaces (213) on its outer periphery, and the smooth surfaces (213) are configured as a threaded surface.

10. A cosmetic pen with anti-reverse function according to claim 1, characterized in that: The makeup pen body (1) includes an upper chamber (101) and a lower chamber (102), the second anti-reverse component (32) is disposed on the side wall of the lower chamber (102), and the makeup material is placed in the upper chamber (101).

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