Cosmetic pen

Abstract

A cosmetic pen, comprising: a housing (1), an inner bottle (2), a brush head (3) inserted 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) passes 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 cosmetic liquid (70) are arranged in the inner bottle (2); the outer screw (8) is threadedly connected to a driving mechanism (100); the front end of the inner screw (7) is circumferentially fixed to the piston (6); the outer screw (8) is tubular; a first outer thread (82) is formed in the outer wall of the outer screw (8), and an inner thread (83) in the direction opposite to that of the first outer thread (82) is formed in the inner wall of the outer screw (8); and the inner screw (7) pushes the piston (6) to axially move towards the brush head (3) and extrudes the cosmetic liquid (70), and then the cosmetic liquid (70) can flow out through the discharge channel (31).

Description

Cosmetic pen TECHNICAL FIELD

[0001] The utility model relates to a cosmetic container, especially to a cosmetic pen. BACKGROUND

[0002] The liquid cosmetic pen in the prior art usually adopts screw rotation to make the cosmetic pen discharge, the screw rod telescopic length and the length of the liquid storage cavity are consistent, and the screw rod rotates when the base is rotated or pressed, so that the cosmetic liquid flows out. However, the length of the telescopic mechanism of the cosmetic pen is consistent with the length of the liquid storage cavity in the technical scheme, and the cosmetic pen with large capacity will have a longer or thicker shape, which is not only not beautiful, but also inconvenient to carry.

[0003] SUMMARY

[0004] In order to overcome the above defects, the utility model provides a cosmetic pen with double screw rod structure, which has the advantages of being convenient to carry and having large capacity.

[0005] The utility model discloses a cosmetic pen, including: shell, inner bottle, brush head inserted in the front end of the inner bottle, button and detachable cover of the brush head, the middle part of the brush head is passed through and is set up with the discharge channel of the inner bottle and communicates, the inner bottle is equipped with piston, inner screw rod, outer screw rod and material body, the outer screw rod screw thread connection drive mechanism, the outer wall of the piston and the inner wall of the inner bottle are in interference fit and realize sealing, the front end of the inner screw rod and the piston circumferential fixed, the outer screw rod is tubular, the outer wall of the outer screw rod is provided with first outer thread, the inner wall of the outer screw rod is provided with the inner thread of a section and the direction opposite first outer thread, the inner screw rod is equipped with second outer thread to with the inner thread screw thread connection, the button is pressed and drives the drive mechanism rotation, the drive mechanism drives the outer screw rod positive rotation and moves along the axial direction, simultaneously, the outer screw rod drives the inner screw rod reverse rotation and moves along the axial direction, the inner screw rod pushes the piston and presses the material body along the direction of the brush head axial movement, and the material body can flow from the discharge channel.

[0006] Optionally, the cover includes an outer cover and an inner cover, the inner wall of the outer cover is provided with a first limiting ring, the opening 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 capable of cooperating with the first convex ring.

[0007] Optionally, it further includes a sleeve, the inner bottle is radially extended to form a positioning part, the positioning part is provided with a first end and a second end in front and back, the sleeve is fixed on the first end, and the shell is fixed on the second end.

[0008] Optionally, the first end is provided with a first buckle, the sleeve is matched 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 is matched with the second buckle.

[0009] Optionally, the positioning part is provided with at least two fixed protrusions in the circumferential direction, and an inner wall of the sleeve is provided with fourth grooves matched with the fixed protrusions.

[0010] Optionally, an outer wall of the positioning part is non-circular arc-shaped, and the fixed protrusions are arranged at opposite corners of the positioning part.

[0011] Optionally, the front end of the inner bottle is gradually narrowed to form an open end, an inner wall of the open end is provided with a second groove, and an outer wall of the brush head is provided with a second protruding ring matched with the second groove.

[0012] Optionally, the driving mechanism comprises a positioning seat, a ratchet wheel, a spring, a ratchet and a ratchet seat, the positioning seat, the ratchet wheel, the spring and the ratchet are sleeved on the outer screw rod, an inner wall of the ratchet wheel is provided with a guide strip, and an outer wall of the outer screw rod extends in the axial direction and is provided with a slot into which the guide strip can be slid and clamped.

[0013] Optionally, an inner thread of the outer screw rod is arranged at one end of the inner wall of the outer screw rod close to the brush head.

[0014] Optionally, a front end of the inner screw rod is provided with a special-shaped positioning block, and one end of the piston is provided with a special-shaped notch into which the special-shaped positioning block can be clamped.

[0015] The beneficial technical effects of the utility model are as follows: when in use, the button is pressed, the driving mechanism rotates under the drive of the button and drives the outer screw rod to rotate in the positive direction, because the outer screw rod and the driving mechanism are threadedly connected, the outer screw rod can push the outer screw rod and the inner screw rod and the piston to move in the axial direction towards the brush head when the outer screw rod rotates, that is, to move towards the front end of the inner bottle, at the same time, because the inner screw rod and the piston are fixed in the circumferential direction and the outer wall of the piston and the inner wall of the inner bottle are in interference fit, the static friction between the piston and the inner wall of the inner bottle can prevent the outer screw rod from rotating together with the inner screw rod, because the inner wall of the outer screw rod is provided with an inner thread opposite to the first outer thread, and the inner thread is threadedly connected with the second outer thread on the inner screw rod, the outer screw rod can drive the inner screw rod to rotate in the reverse direction and push the piston to further move in the axial direction towards the brush head when the outer screw rod rotates and moves in the axial direction, compared with the technical solution of the single screw rod, when the inner screw rod and the outer screw rod are in the non-extended state, the outer screw rod is sleeved on the inner screw rod, the length of the screw rod structure and the cosmetic pen as a whole can be reduced, which is convenient for carrying, and because the length of the screw rod structure is shorter, the cosmetic pen can accommodate more material under the condition of the same length. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of the cosmetic pen of the present application;

[0017] Figure 2 is a partial enlarged view of A in Figure 1;

[0018] Figure 3 is a partial enlarged view of B in Figure 1;

[0019] Figure 4 is a front view of the cosmetic pen of the present application;

[0020] Figure 5 is a side view of the cosmetic pen of the present application;

[0021] Figure 6 is an exploded view of the cosmetic pen of the present application;

[0022] Figure 7 is a sectional view of the assembled state of the piston, inner screw rod, outer screw rod, driving mechanism and button of the present application;

[0023] Figure 8 is a three-dimensional partial perspective view of the assembled state of the piston, driving mechanism and button of the present application;

[0024] Figure 9 is a three-dimensional view of the inner bottle of the present application;

[0025] Figure 10 is a three-dimensional view of the ratchet of the present application;

[0026] Figure 11 is a three-dimensional view of the ratchet gear of the present application;

[0027] Figure 12 is a three-dimensional view of the brush head of the present application;

[0028] Figure 13 is a three-dimensional view of the inner screw rod of the present application;

[0029] Figure 14 is a three-dimensional view of the outer screw rod of the present application;

[0030] Figure 15 is a three-dimensional view of the piston of the present application;

[0031] Wherein: 1, shell; 2, inner bottle; 21, first protruding ring; 22, first buckle; 23, second buckle; 24, positioning part; 25, fixed protruding strip; 3, brush head; 31, discharge channel; 32, second protruding ring; 4, outer cover; 41, first limiting ring; 5, inner cover; 6, piston; 61, special-shaped notch; 7, inner screw rod; 71, special-shaped positioning block; 72, second external thread; 8, outer screw rod; 81, notch; 82, first external thread; 83, internal thread; 9, sleeve; 10, positioning seat; 11, second limiting ring; 20, ratchet; 201, inclined protruding rib; 202, guide strip; 30, button; 301, mounting seat; 302, third protruding ring; 40, spring; 50, ratchet gear; 501, triangular sawtooth; 502, guide protruding rib; 60, ratchet gear seat; 601, limiting seat; 70, material body; 100, driving mechanism. DETAILED DESCRIPTION

[0032] In order to make the technical means of the utility model more clearly understood, and can be implemented according to the content of the specification, the specific embodiments of the utility model are further described in detail below, the following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0033] The cosmetic pen is shown in FIGS. 1-15, which comprises a shell 1, an inner bottle 2, a brush head 3 inserted into the front end of the inner bottle 2, a button 30 and a cover detachably covered on the brush head 3, a discharge passage 31 is formed in the middle of the brush head 3 and communicates with the inner bottle 2, a piston 6, an inner screw rod 7, an outer screw rod 8 and a material body 70 are arranged in the inner bottle 2, the outer screw rod 8 is threadedly connected with a driving mechanism 100, the outer wall of the piston 6 and the inner wall of the inner bottle 2 are in interference fit to realize sealing, the front end of the inner screw rod 7 is fixed in the circumferential direction of the piston 6, the outer screw rod 8 is tubular, the outer wall of the outer screw rod 8 is provided with a first outer thread 82, the inner wall of the outer screw rod 8 is provided with an inner thread 83 in a direction opposite to the first outer thread 82, the inner screw rod 7 is provided with a second outer thread 72 to be threadedly connected with the inner thread 83, the button 30 is driven to rotate after being pressed to drive the driving mechanism 100 to rotate, the driving mechanism 100 drives the outer screw rod 8 to rotate forward and move in the axial direction, at the same time, the outer screw rod 8 drives the inner screw rod 7 to rotate reversely and move in the axial direction, the inner screw rod 7 drives the piston 6 to move in the axial direction towards the brush head 3 and extrudes the material body 70, and the material body 70 can flow out of the discharge passage 31.

[0034] As shown in FIGS. 1, 3 and 4-6, in the embodiment, the cover 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 to avoid the inner cover 5 from being separated from the outer cover 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 cover 5 is provided with a first recess capable of cooperating with the first convex ring 21, and the cover and the inner bottle 2 are connected through the detachable cooperation between the first convex ring 21 and the first recess.

[0035] As shown in FIGS. 1, 4, 6 and 9, in the embodiment, a sleeve 9 is further included, 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 in front and back, the sleeve 9 is fixed at the first end, and the shell 1 is fixed at the second end.

[0036] As shown in FIGS. 1, 3 and 4-9, in the embodiment, 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 shell 1 cooperates with the second buckle 23.

[0037] As shown in FIG. 9, in some embodiments, the positioning portion 24 is provided with at least two fixing protrusions 25 in the circumferential direction, and the inner wall of the sleeve 9 is provided with fourth grooves (not shown) matched with the fixing protrusions 25. When the sleeve 9 is installed on the inner bottle 2, the fourth grooves are installed in correspondence with the fixing protrusions 25, and the inner wall of the sleeve 9 is clamped with the first buckle 22 to ensure the fixing effect of the sleeve 9 and the inner bottle 2.

[0038] As shown in FIG. 9, in some embodiments, the outer wall of the positioning portion 24 is non-circular arc, and the fixing protrusions 25 are arranged at opposite corners of the positioning portion 24. In some alternative embodiments, the outer wall of the positioning portion 24 is an octahedron formed by eight planes, and four fixing protrusions 25 are arranged on the eight planes of the octahedron in a spaced manner. The sleeve 9 is provided with a fourth groove at each corner, and after installation, the fixing protrusions 25 are clamped in the fourth grooves.

[0039] As shown in FIG. 9 and FIG. 12, in some embodiments, the front end of the inner bottle 2 is gradually narrowed to form an open end, and the inner wall of the open end is provided with a second groove. The outer wall of the brush head 3 is provided with a second protruding ring 32 matched with the second groove, and the connection between the brush head 3 and the inner bottle 2 is realized through the cooperation of the second groove and the second protruding ring 32. In some alternative embodiments, the brush head 3 is provided with a fifth groove, and the inner wall of the open end is provided with a protruding rib matched with the fifth groove. The brush head 3 and the open end can also be connected through a threaded connection or a clamping structure, which is not limited in the present application.

[0040] As shown in FIG. 7-FIG. 11, in some embodiments, the driving mechanism includes a positioning seat 10, a ratchet wheel 20, a spring 40, a ratchet 50 and a ratchet seat 60. The positioning seat 10, the ratchet wheel 20, the spring 40 and the ratchet 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 provided with a slot 81 for sliding and clamping the guide strip 202. The guide strip 202 is slidingly clamped in the slot 81 to fix the ratchet wheel 20 on the outer screw 8 while maintaining a sliding connection with the outer screw 8.

[0041] 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, the outer wall around the rear end of the ratchet wheel 20 is uniformly provided with at least one inclined convex rib 201, the end of the front end of the ratchet 50 is uniformly provided with at least one triangular sawtooth 501 in the circumferential direction, the outer wall of the front end of the ratchet 50 is uniformly provided with at least one guide convex rib 502, the inner wall of the ratchet seat 60 is uniformly provided with at least one guide groove, the front end of the guide groove is an inclined surface, the inclined convex rib 201 and the guide convex rib 502 can be slidably connected to the guide groove, the button 30 is pressed, the button 30 pushes the ratchet 50, the triangular sawtooth 501 abuts against the inclined surface of the inclined convex rib 201, the ratchet 50 pushes the ratchet wheel 20, after the inclined convex rib 201 is pushed out of the guide groove, the ratchet wheel 20 slides along the inclined surface of the inclined convex rib 201 and generates a rotary motion, and the outer screw rod 8 is driven by the ratchet wheel 20 to rotate in the positive direction, and then the inclined convex rib 201 slides to the next guide groove through the inclined surface of the upper part of the guide groove.

[0042] The specific movement mode of the driving mechanism 100 is that the ratchet 50 can extrude the ratchet wheel 20 under the pushing of the button 30, the triangular sawtooth 501 can abut against the inclined convex rib 201 and push the inclined convex rib 201 out of the guide groove while compressing the spring 40, the inclined convex rib 201 can slide from the top end of the triangular sawtooth 501 to the bottom end of the triangular sawtooth 501 while driving the ratchet wheel 20 to rotate, the outer screw rod 8 can rotate under the driving of the ratchet wheel 20, the end of the inclined convex rib 201 can abut against the inclined surface at the front end of the guide groove, the inclined convex rib 201 can slide along the inclined surface under the pushing of the spring 40 until entering the adjacent guide groove while driving the ratchet wheel 20 to rotate again, the outer screw rod 8 can rotate under the driving of the ratchet wheel 20, and the ratchet wheel 20, the ratchet 50 and the button 30 can move away from the positioning seat 10 under the pushing of the spring 40.

[0043] As shown in FIGS. 2, 7 and 8, in the embodiment, the inner wall of the shell 1 is protrusively provided with a second limiting ring 11, 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 ring 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 rib 502 can abut against the limiting seat 601, the inner part of the button 30 is provided with a mounting seat 301, the outer wall of the mounting seat 301 is provided with a third convex ring 302, the inner wall of the rear end of the ratchet 50 is provided with a third recess which can cooperate with the third convex ring 302. The cooperation of the third convex ring 302 and the third recess realizes the connection of the button 30 and the ratchet seat 60.

[0044] As shown in FIG. 13, in the embodiment, the inner thread 83 of the outer screw rod 8 is arranged at one end of the inner wall of the outer screw rod 8 close to the brush head 3.

[0045] As shown in FIG. 14 and FIG. 15, in the embodiment, the front end of the inner screw rod 7 is provided with a special-shaped positioning block 71, and the one end of the piston 6 is provided with a special-shaped notch 61 for clamping the special-shaped positioning block 71. The circumferential fixation of the inner screw rod 7 and the piston 6 is achieved by clamping the special-shaped positioning block 71 into the special-shaped notch 61. In other embodiments, the front end of the inner screw rod 7 can be provided with a five-edged, six-edged, eight-edged or other special-shaped positioning block, and the piston 6 is provided with a fixing hole corresponding to the special-shaped positioning block.

[0046] In use of the cosmetic pen in the embodiment, the button 30 is pressed first, and the driving mechanism 100 rotates and drives the outer screw rod 8 to rotate forward under the driving of the button 30. Since the outer screw rod 8 is threadedly connected with the driving mechanism 100, the outer screw rod 8 can push itself, the inner screw rod 7 and the piston 6 to move axially towards the brush head 3 when the outer screw rod 8 rotates, i.e. towards the front end of the inner bottle 2. Since the piston 6 is circumferentially fixed with the inner screw rod 7 and the outer wall of the piston 6 is in interference fit with the inner wall of the inner bottle 2, the static friction between the piston 6 and the inner wall of the inner bottle 2 can prevent the outer screw rod 8 from rotating the inner screw rod 7 together. Since the inner wall of the outer screw rod 8 is provided with an inner thread 83 opposite to the direction of the first outer thread 82, and the inner thread 83 is threadedly connected with the second outer thread 72 on the inner screw rod 7, the outer screw rod 8 can drive the inner screw rod 7 to rotate reversely and push the piston 6 to move axially further towards the brush head 3 when the outer screw rod 8 rotates and moves axially. 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.

[0047] With the same liquid output, the number of pressing times of the cosmetic pen provided in the present application is half of that of the single screw rod technical solution. Therefore, compared with the single screw rod cosmetic pen, the length of the screw rod structure of the cosmetic pen in the present application is shorter, and thus the overall length of the cosmetic pen is shortened; or in the case that the overall length of the cosmetic pen is the same, the cosmetic pen can accommodate more material due to the shorter length of the screw rod structure. The cosmetic pen has the advantages of convenient carrying and large capacity of material. Since the piston 6 is circumferentially fixed with the inner screw rod 7, the piston 6 only moves axially in the process of pressing the material out, and thus the material 70 can be prevented from being missed and the inner bottle can be kept clean.

Claims

1. A cosmetic pencil, characterized in that: include: The invention relates to a 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 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) 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 pressed to drive the driving mechanism (100) to rotate, 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 brush 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 open 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 brush according to claim 1, characterized in that: The inner bottle (2) further comprises a sleeve (9), wherein the inner bottle (2) extends radially to form a positioning portion (24), wherein the positioning portion (24) is divided into a first end and a second end arranged front and back, wherein the sleeve (9) is fixed at the first end, and the outer shell (1) is fixed at the second end.

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

7. The cosmetic brush 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 brush according to claim 1, characterized in that: The driving mechanism comprises 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) is axially extended with a notch (81) for the guide bar (202) to slide into.

9. The cosmetic brush 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 brush according to claim 1, characterized in that: The front end of the inner screw (7) is provided with a special-shaped positioning block (71), and one end of the piston (6) is provided with a special-shaped notch (61) for the special-shaped positioning block (71) to be inserted into.

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