Cosmetic pencil

Abstract

The cosmetic brush comprises a shell, an inner bottle, a brush head inserted in the front end of the inner bottle, a button and a cover detachably covering the brush head, a discharging channel is formed in the middle of the brush head in a penetrating mode and communicated with the inner bottle, and a piston, an inner screw, an outer screw and a material body are arranged in the inner bottle. The outer screw rod is in threaded connection with a driving mechanism, the front end of the inner screw rod and the piston are fixed in the circumferential direction, the outer screw rod is tubular, a first outer thread is arranged on the outer wall of the outer screw rod, and a section of inner thread opposite to the first outer thread in direction is arranged on the inner wall of the outer screw rod; the inner screw pushes the piston to axially move towards the direction of the brush head and extrudes a material body, and the material body can flow out of the discharging channel. The utility model is convenient to carry and has large material capacity.

Description

Technical Field

[0001] The utility model relates to a cosmetic container, in particular to a cosmetic brush. Background Art

[0002] In the prior art, liquid makeup pens usually use a screw to rotate to discharge the makeup pens. The telescopic length of the screw is consistent with the length of the liquid storage cavity. When the base is rotated or pressed, the screw rotates to cause the makeup liquid to flow out. However, the length of the telescopic mechanism of the makeup pen in this technical solution is consistent with the length of the liquid storage cavity. A large-capacity makeup pen will appear longer or thicker, which is not only not beautiful but also inconvenient to carry. Utility Model Content

[0003] In order to overcome the above defects, the utility model provides a cosmetic pen with a twin-screw structure, which has the advantages of being easy to carry and having a large material capacity.

[0004] The utility model adopts the following technical solution to solve the technical problem: a cosmetic brush, comprising: an outer shell, an inner bottle, a brush head plugged into the front end of the inner bottle, a button and a cover detachably covering the brush head; a discharge channel is provided through the middle of the brush head and communicated with the inner bottle; a piston, an inner screw, an outer screw and a material body are provided in the inner bottle; the outer screw is threadedly connected to a driving mechanism; the outer wall of the piston and the inner wall of the inner bottle are sealed by interference fit; the front end of the inner screw and the piston are circumferentially fixed; the outer screw is tubular; The outer wall of the outer screw is provided with a first outer thread, the inner wall of the outer screw is provided with an inner thread in the opposite direction to the first outer thread, the inner screw is provided with a second outer thread to be threadedly connected with the inner thread, and the button is driven to rotate by the driving mechanism after being pressed, and the driving mechanism drives the outer screw to rotate forward and move axially, while the outer screw drives the inner screw to rotate reversely and move axially, and the inner screw pushes the piston to move axially toward the direction of the brush head and squeeze the material body, so that the material body can flow out from the discharge channel.

[0005] Optionally, the lid includes an outer cover and an inner cover, the inner wall of the outer cover is provided with a first limiting ring, the open end of the inner cover abuts against the first limiting ring, the outer wall of the front end of the inner bottle is provided with a first convex ring, and the inner wall of the inner cover is provided with a first groove that can cooperate with the first convex ring.

[0006] Optionally, it further includes a sleeve, the inner bottle extends radially to form a positioning portion, the positioning portion is a first end and a second end arranged front and back, the sleeve is fixed at the first end, and the shell is fixed at the second end.

[0007] Optionally, the first end is provided with a first buckle, the sleeve cooperates with the first buckle, the second end is provided with a second buckle, the first buckle and the second buckle are located on the same axis, and the shell cooperates with the second buckle.

[0008] Optionally, the positioning portion is provided with at least two fixing ridges along the circumferential direction, and the inner wall of the sleeve is provided with a fourth groove cooperating with the fixing ridges.

[0009] Optionally, the outer wall of the positioning portion is non-arc-shaped, and the fixing ridge is arranged at the diagonal position of the positioning portion.

[0010] Optionally, the front end of the inner bottle gradually narrows to form an open end, the inner wall of the open end is provided with a second groove, and the outer wall of the brush head is provided with a second convex ring that cooperates with the second groove.

[0011] Optionally, the driving mechanism includes a positioning seat, a ratchet, a spring, a ratchet and a ratchet seat, the positioning seat, ratchet, spring and ratchet are sleeved on the outer screw, the inner wall of the ratchet is provided with a guide strip, and the outer wall of the outer screw extends axially with a groove for the guide strip to slide into.

[0012] Optionally, the internal thread of the external screw is arranged on an end of the inner wall of the external screw close to the brush head.

[0013] Optionally, a special-shaped positioning block is provided at the front end of the inner screw, and a special-shaped notch for the special-shaped positioning block to be inserted into is opened at one end of the piston.

[0014] The beneficial technical effect of the utility model is that when in use, the button is pressed, and the driving mechanism rotates under the drive of the button and drives the outer screw to rotate forwardly. Since the outer screw and the driving mechanism are threadedly connected, the outer screw can push itself, the inner screw and the piston to move axially toward the brush head, that is, toward the front end of the inner bottle when rotating. At the same time, since the inner screw and the piston are circumferentially fixed and the outer wall of the piston and the inner wall of the inner bottle have an interference fit, the static friction between the piston and the inner wall of the inner bottle can prevent the outer screw from driving the inner screw to rotate together when rotating. An internal thread is arranged in the opposite direction to the first external thread, and the internal thread is threadedly connected to the second external thread on the internal screw. When the external screw rotates and moves axially, it can also drive the internal screw to rotate in the opposite direction through the internal thread and push the piston to move further axially toward the brush head. Compared with the technical solution of a single screw, when the internal screw and the external screw are in a non-extended state, the external screw is sleeved on the internal screw, which can reduce the length of the screw structure and the overall length of the cosmetic brush, which is not only easy to carry, but also can accommodate more materials due to the shorter length of the screw structure under the same length. It has the advantages of being easy to carry and having a large material capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the cosmetic brush of the utility model;

[0016] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0017] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0018] Figure 4 It is a front view of the cosmetic brush of the utility model;

[0019] Figure 5 It is a side view of the cosmetic brush of the utility model;

[0020] Figure 6 It is a three-dimensional exploded view of the cosmetic brush of the utility model;

[0021] Figure 7 It is a cross-sectional view of the utility model in the assembled state of the piston, the inner screw, the outer screw, the drive mechanism and the button;

[0022] Figure 8 It is a three-dimensional partial perspective view of the piston, driving mechanism and button of the utility model in the assembled state;

[0023] Fig. 9 It is a three-dimensional diagram of the inner bottle of the utility model;

[0024] Fig.10 It is a three-dimensional diagram of the ratchet of the utility model;

[0025] Fig.11 It is a three-dimensional diagram of the ratchet of the utility model;

[0026] Fig.12 It is a three-dimensional diagram of the brush head of the utility model;

[0027] Fig.13 It is a three-dimensional diagram of the internal screw of the utility model;

[0028] Fig.14 It is a stereogram of the external screw of the utility model;

[0029] Fig.15 It is a three-dimensional diagram of the piston of the utility model;

[0030] in:

[0031] 1. outer shell; 2. inner bottle; 21. first convex ring; 22. first buckle; 23. second buckle;

[0032] 24, positioning part; 25, fixed convex strip; 3, brush head; 31, discharge channel; 32, second convex ring; 4, outer cover; 41, first limiting ring; 5, inner cover; 6, piston; 61, special-shaped notch;

[0033] 7. Internal screw; 71. Special-shaped positioning block; 72. Second external thread; 8. External screw; 81. Notch; 82. First external thread; 83. Internal thread; 9. Sleeve; 10. Positioning seat; 11. Second limiting ring; 20. Ratchet; 201. Bevel ridge; 202. Guide strip; 30. Button; 301. Mounting seat; 302. Third ridge; 40. Spring; 50. Ratchet; 501. Triangular sawtooth; 502. Guide ridge; 60. Ratchet seat; 601. Limiting seat; 70. Material body; 100. Driving mechanism. DETAILED DESCRIPTION

[0034] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0035] This specific embodiment describes the cosmetic brush of the present application in detail. Figure 1-Figure 15 As shown, the cosmetic pen comprises: an outer shell 1, an inner bottle 2, a brush head 3 plugged into the front end of the inner bottle 2, a button 30 and a cover detachably covering the brush head 3, a discharge channel 31 is provided in the middle of the brush head 3 and is communicated with the inner bottle 2, a piston 6, an inner screw 7, an outer screw 8 and a material body 70 are provided in the inner bottle 2, the outer screw 8 is threadedly connected to the driving mechanism 100, the outer wall of the piston 6 and the inner wall of the inner bottle 2 are interference-fitted to achieve sealing, the front end of the inner screw 7 and the piston 6 are circumferentially fixed, the outer screw 8 is tubular, and the outer wall of the outer screw 8 is provided with a first outer Thread 82, the inner wall of the outer screw 8 is provided with an inner thread 83 which is opposite to the first outer thread 82, and the inner screw 7 is provided with a second outer thread 72 which is threadably connected with the inner thread 83. When the button 30 is pressed, the driving mechanism 100 is driven to rotate, and the driving mechanism 100 drives the outer screw 8 to rotate forward and move axially. At the same time, the outer screw 8 drives the inner screw 7 to rotate reversely and move axially. The inner screw 7 pushes the piston 6 to move axially toward the direction of the brush head 3 and squeeze the material body 70, and the material body 70 can flow out from the discharge channel 31.

[0036] Ginseng Figure 1 , Figure 3 and Figure 4-Figure 6As shown, in this embodiment, optionally, the lid includes an outer lid 4 and an inner lid 5, the inner wall of the outer lid 4 is provided with a first limiting ring 41, the open end of the inner lid 5 abuts against the first limiting ring 41 to prevent the inner lid 5 from separating from the outer lid 4, the outer wall of the front end of the inner bottle 2 is provided with a first convex ring 21, the inner wall of the inner lid 5 is provided with a first groove that can cooperate with the first convex ring 21, and the connection between the lid and the inner bottle 2 is achieved by the detachable cooperation between the first convex ring 21 and the first groove.

[0037] Ginseng Figure 1 , Figure 4 , Figure 6 and Fig. 9 As shown, this embodiment optionally further includes a sleeve 9, the inner bottle 2 extends radially to form a positioning portion 24, the positioning portion 24 is divided into a first end and a second end arranged front and back, the sleeve 9 is fixed at the first end, and the outer shell 1 is fixed at the second end.

[0038] Ginseng Figure 1 , Figure 3 and Figure 4-Figure 9 As shown, in this embodiment, optionally, a first buckle 22 is provided at the first end, the sleeve 9 cooperates with the first buckle 22, and a second buckle 23 is provided at the second end. The first buckle 22 and the second buckle 23 are located on the same axis, and the housing 1 cooperates with the second buckle 23.

[0039] Ginseng Fig. 9 As shown, in this embodiment, optionally, the positioning portion 24 is provided with at least two fixing ridges 25 along the circumferential direction, and the inner wall of the sleeve 9 is provided with a fourth groove (not shown) matched with the fixing ridge 25. When the sleeve 9 is installed in the inner bottle 2, the fourth groove is installed corresponding to the fixing ridge 25, and the inner wall of the sleeve 9 is engaged with the first buckle 22 to ensure the fixing effect of the sleeve 9 and the inner bottle 2.

[0040] Ginseng Fig. 9 As shown, in this embodiment, optionally, the outer wall of the positioning portion 24 is non-arc-shaped, and the fixing ridge 25 is provided at the diagonal of the positioning portion 24. In some optional embodiments, the outer wall of the positioning portion 24 is an octahedron formed by splicing eight planes, and four fixing ridges 25 are provided on the eight planes of the octahedron at intervals, and a fourth groove is provided at each of the four corners of the sleeve 9. After installation, the fixing ridge 25 is engaged in the fourth groove.

[0041] Ginseng Fig. 9 and Fig.12As shown, in this embodiment, optionally, the front end of the inner bottle 2 gradually narrows to form an open end, the inner wall of the open end is provided with a second groove, and the outer wall of the brush head 3 is provided with a second convex ring 32 that cooperates with the second groove, and the connection between the brush head 3 and the inner bottle 2 is achieved through the cooperation of the second groove and the second convex ring 32. In some other embodiments, the brush head 3 is provided with a fifth groove, and the inner wall of the open end is provided with a convex rib that cooperates with the fifth groove. The brush head 3 and the open end can also be connected by a threaded connection or fixed by a clamping structure, which is not limited in this application.

[0042] Ginseng Figure 7-Figure 11 As shown, in this embodiment, the driving mechanism optionally includes a positioning seat 10, a ratchet 20, a spring 40, a ratchet 50 and a ratchet seat 60. The positioning seat 10, the ratchet 20, the spring 40 and the ratchet are sleeved on the outer screw 8. The inner wall of the ratchet 20 is provided with a guide bar 202. The outer wall of the outer screw 8 extends axially to provide a notch 81 for the guide bar 202 to slide into. The guide bar 202 slides into the notch 81 to achieve the ratchet 20 circumferentially fixing the outer screw 8 while maintaining a sliding connection with the outer screw 8.

[0043] The button 30 is fixed to the rear end of the ratchet 50, the ratchet seat 60 is sleeved on the ratchet 50 and the ratchet wheel 20, and at least one inclined ridge 201 is evenly arranged around the outer wall of the rear end of the ratchet wheel 20, and at least one triangular sawtooth 501 is evenly arranged on the end of the front end of the ratchet 50. At least one guide ridge 502 is evenly arranged on the outer wall of the front end of the ratchet 50, and at least one guide groove is evenly arranged on the inner wall of the ratchet seat 60. The front end of the guide groove is an inclined surface, and the inclined ridge 201 The guide ridge 502 can be slidably connected to the guide groove, and the button 30 is pressed. The button 30 pushes the ratchet 50, and the triangular serration 501 abuts against the inclined surface of the bevel ridge 201. The ratchet 50 pushes the ratchet 20. After the bevel ridge 201 is pushed out of the guide groove, the ratchet 20 slides along the inclined surface of the bevel ridge 201 and generates a rotational motion. The outer screw 8 rotates forward under the drive of the ratchet 20, and then the bevel ridge 201 slides into the next guide groove through the inclined surface at the upper part of the guide groove.

[0044] The specific movement mode of the driving mechanism 100 is as follows: the ratchet 50 can squeeze the ratchet 20 under the push of the button 30, the triangular serration 501 can abut against the inclined ridge 201 and push the inclined ridge 201 out of the guide groove while compressing the spring 40, the inclined ridge 201 can slide from the top end of the triangular serration 501 to the bottom end of the triangular serration 501 while driving the ratchet 20 to rotate, the outer screw 8 can rotate under the drive of the ratchet 20, the end of the inclined ridge 201 can abut against the inclined surface of the front end of the guide groove, the inclined ridge 201 can slide along the inclined surface under the push of the spring 40 until it enters the adjacent guide groove while driving the ratchet 20 to rotate again, the outer screw 8 can rotate under the drive of the ratchet 20, and the ratchet 20, the ratchet 50 and the button 30 can move away from the positioning seat 10 under the push of the spring 40.

[0045] Ginseng Figure 2 , Figure 7 and Figure 8 As shown, in this embodiment, optionally, the inner wall of the housing 1 is provided with a second limiting ring 11 protrudingly, the outer wall of the ratchet seat 60 can abut against the second limiting ring 11, the inner wall of the ratchet seat 60 is provided with a circle of limiting seats 601, the limiting seats 601 are located at the rear end of the guide groove, the rear end of the guide convex ridge 502 can abut against the limiting seats 601, the button 30 is provided with a mounting seat 301 inside, the outer wall of the mounting seat 301 is provided with a third convex ring 302, and the inner wall of the rear end of the ratchet 50 is provided with a third groove that can cooperate with the third convex ring 302. The button 30 and the ratchet seat 60 are connected by the cooperation of the third convex ring 302 and the third groove.

[0046] Ginseng Fig.13 As shown, in this embodiment, optionally, the internal thread 83 of the external screw 8 is arranged at one end of the inner wall of the external screw 8 close to the brush head 3.

[0047] Ginseng Fig.14 and Fig.15 As shown, in this embodiment, optionally, a special-shaped positioning block 71 is provided at the front end of the inner screw 7, and a special-shaped notch 61 is provided at one end of the piston 6 for the special-shaped positioning block 71 to be inserted into. The inner screw 7 and the piston 6 are fixed in the circumferential direction by inserting the special-shaped positioning block 71 into the special-shaped notch 61. In other embodiments, the front end of the inner screw 7 can be set as a pentagonal, hexagonal, octagonal or other special-shaped positioning block, and the piston 6 can be provided with a fixing hole corresponding thereto.

[0048] When the cosmetic brush in this embodiment is used, the button 30 is pressed first, and the driving mechanism 100 rotates under the drive of the button 30 and drives the outer screw 8 to rotate in the forward direction. Since the outer screw 8 and the driving mechanism 100 are threadedly connected, the outer screw 8 can push itself, the inner screw 7 and the piston 6 to move axially toward the brush head 3, that is, move toward the front end of the inner bottle 2. At the same time, since the inner screw 7 and the piston 6 are circumferentially fixed and the outer wall of the piston 6 and the inner wall of the inner bottle 2 are interference fit, the static friction between the piston 6 and the inner wall of the inner bottle 2 can prevent the outer screw 8 from driving the inner screw 7 to rotate together when rotating. Since the inner wall of the outer screw 8 is provided with an internal thread 83 in the opposite direction to the first external thread 82, and the internal thread 83 is threadedly connected to the second external thread 72 on the inner screw 7, the outer screw 8 can drive the inner screw 7 to rotate in the opposite direction through the internal thread 83 while rotating and moving axially, and push the piston 6 to move further axially toward the brush head 3. In the present application, the front end refers to the end close to the brush head, and the rear end refers to the end away from the brush head.

[0049] For the same amount of liquid output, the number of times the cosmetic brush provided by the present application is pressed is half of that of the single-screw technical solution. Therefore, compared with the single-screw cosmetic brush, the length of the cosmetic brush screw structure of the present application is shorter, thereby shortening the overall length of the cosmetic brush; or, when the overall length of the cosmetic brush is the same, the cosmetic brush can also accommodate more material due to the shorter length of the screw structure. It has the advantages of being easy to carry and having a large material capacity. In addition, since the piston 6 is circumferentially fixed to the inner screw 7, during the pressing and discharging process, the piston 6 only moves axially, which can avoid the material 70 from being missed and keep the inner bottle clean.

Claims

1. A cosmetic pencil, characterized in that: include: An outer shell (1), an inner bottle (2), a brush head (3) plugged into the front end of the inner bottle (2), a button (30) and a cover detachably covering the brush head (3); a discharge channel (31) is provided through the middle of the brush head (3) and is communicated with the inner bottle (2); a piston (6), an inner screw (7), an outer screw (8) and a material body (70) are provided in the inner bottle (2); the outer screw (8) is threadedly connected to a driving mechanism (100); the outer wall of the piston (6) and the inner wall of the inner bottle (2) are sealed by interference fit; the front end of the inner screw (7) and the piston (6) are circumferentially fixed; the outer screw (8) is tubular; the outer wall of the outer screw (8) is provided with a first outer thread ( 82), the inner wall of the outer screw (8) is provided with an inner thread (83) in the opposite direction to the first outer thread (82), the inner screw (7) is provided with a second outer thread (72) for threaded connection with the inner thread (83), the button (30) is driven to rotate by the driving mechanism (100) after being pressed, the driving mechanism (100) drives the outer screw (8) to rotate in the forward direction and move in the axial direction, and at the same time the outer screw (8) drives the inner screw (7) to rotate in the reverse direction and move in the axial direction, the inner screw (7) pushes the piston (6) to move axially in the direction of the brush head (3) and squeeze the material body (70), and the material body (70) can flow out from the discharge channel (31).

2. The cosmetic pencil according to claim 1, characterized in that: The lid comprises an outer cover (4) and an inner cover (5); the inner wall of the outer cover (4) is provided with a first limiting ring (41); the opening end of the inner cover (5) abuts against the first limiting ring (41); the outer wall of the front end of the inner bottle (2) is provided with a first convex ring (21); and the inner wall of the inner cover (5) is provided with a first groove capable of cooperating with the first convex ring (21).

3. The cosmetic pencil according to claim 1, characterized in that: It also includes a sleeve (9), the inner bottle (2) extending radially to form a positioning portion (24), the positioning portion (24) is divided into a first end and a second end arranged front and back, the sleeve (9) is fixed to the first end, and the outer shell (1) is fixed to the second end.

4. The cosmetic pencil according to claim 3, characterized in that: The first end is provided with a first buckle (22), the sleeve (9) cooperates with the first buckle (22), the second end is provided with a second buckle (23), the first buckle (22) and the second buckle (23) are located on the same axis, and the housing (1) cooperates with the second buckle (23).

5. The cosmetic pencil according to claim 3, characterized in that: The positioning portion (24) is provided with at least two fixing ridges (25) along the circumferential direction, and the inner wall of the sleeve (9) is provided with a fourth groove that matches the fixing ridges (25).

6. The cosmetic pencil according to claim 5, characterized in that: The outer wall of the positioning portion (24) is non-arc-shaped, and the fixing convex strip (25) is arranged at the diagonal position of the positioning portion (24).

7. The cosmetic pencil according to claim 1, characterized in that: The front end of the inner bottle (2) gradually narrows to form an open end, the inner wall of the open end is provided with a second groove, and the outer wall of the brush head (3) is provided with a second convex ring (32) that cooperates with the second groove.

8. The cosmetic pencil according to claim 1, characterized in that: The driving mechanism comprises a positioning seat (10), a ratchet wheel (20), a spring (40), a ratchet tooth (50) and a ratchet tooth seat (60); the positioning seat (10), the ratchet wheel (20), the spring (40) and the ratchet tooth are sleeved on the outer screw (8); the inner wall of the ratchet wheel (20) is provided with a guide strip (202); and the outer wall of the outer screw (8) is axially extended with a notch (81) into which the guide strip (202) can be slidably inserted.

9. The cosmetic pencil according to claim 1, characterized in that: The internal thread (83) of the external screw (8) is arranged on an end of the inner wall of the external screw (8) close to the brush head (3).

10. The cosmetic pencil according to claim 1, characterized in that: A special-shaped positioning block (71) is arranged at the front end of the inner screw (7), and a special-shaped notch (61) for the special-shaped positioning block (71) to be inserted is opened at one end of the piston (6).

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