FIELD OF THE INVENTION
The invention relates to a cosmetic product, more particularly to a cosmetic applicator for applying liquid cosmetic.
BACKGROUND OF THE INVENTION
Referring to FIG. 1, a conventional cosmetic applicator 10 (such as an eyeliner) includes a casing 11, an adjusting member 12, a cartridge 13, a core 14, a seat 15 and a brush 16. The cartridge 13 is connected to a rear end section of the adjusting member 12, and includes a tube member 131 containing liquid cosmetic, and a plug member 132 plugged into an open end of the tube member 131 and connected to the adjusting member 12. The adjusting member 12 is formed with an axial hole 121 for insertion of the core 14. The core 14 has a rear end extending through the plug member 132 for absorbing the liquid cosmetic in the tube member 131. A plurality of adjusting plates 122 are provided on an outer surface of the adjusting member 12, and spaces among the adjusting plates 122 are in spatial communication with the axial hole 121 such that the liquid cosmetic absorbed by the core 14 can spread to the adjusting plates 122 for storage and regulation. The seat 15 is sleeved onto a front end of the adjusting member 12 with at least one opening 151 formed in an outer side thereof. The outer side of the seat 15 and the adjusting member 12 cooperatively define a passage 152. Air flows into the passage 152 via the opening 151, and then flows through the core 14 and reaches the adjusting plates 122 of the adjusting member 12. The brush 16 is partially disposed in the seat 15 with a front end thereof protruding from the seat 15, and a rear end thereof connected to the core 14. The liquid cosmetic flows out of the brush 16 after being absorbed by the core 14.
Although the aforementioned conventional cosmetic applicator 10 has an automatic liquid cosmetic flowing effect, there is still room for improvement. Since the adjusting member 12 is only covered by the casing 11, and the tube member 131 is connected to the adjusting member 12 via the plug member 132, the liquid cosmetic accumulated among the adjusting plates 122 might leak through a gap between the adjusting member 12 and the casing 11. In addition, if the airtightness of the coupling between the tube member 131 and the plug member 132 is poor, the liquid cosmetic will leak through a gap between the tube member 131 and the plug member 132, and spread through an internal space among the casing 11, the adjusting member 12, and the cartridge 13, which causes waste of the liquid cosmetic.
SUMMARY OF THE INVENTION
Therefore, the object of the present invention is to provide a cosmetic applicator that can eliminate the aforesaid drawbacks of the prior art.
According to the present invention, there is provided a cosmetic applicator including a casing, a cartridge, a sleeve and a core. The cartridge is disposed in the casing and includes a tube member and a plug member. The tube member is adapted for containing liquid cosmetic, and has an open end portion, and at least one protrusion formed on an inner surface of the open end portion. The plug member has a shoulder section, front and rear end sections and a positioning hole. The shoulder section abuts against an end of the open end portion. The rear end section extends from the shoulder section into the tube member, and has an outer surface abutting airtightly against the at least one protrusion. The front end section is connected to the shoulder section and is opposite to the rear end section. The positioning hole extends through the rear end section, the shoulder section and the front end section.
The sleeve is fixedly coupled to a front end of the casing and has a rear end portion and at least one protrusion. The rear end portion is sleeved on the front end section of the plug member, and has a rear end abutting against the shoulder section of the plug member. The at least one protrusion is formed in an inner surface of the rear end portion and abuts airtightly against an outer surface of the front end section of the plug member.
The core has an absorbing segment that extends through the sleeve and the positioning hole of the plug member for absorbing the liquid cosmetic, and a liquid output segment that extends out of the sleeve.
BRIEF DESCRIPTION OF THE DRAWINGS
Other features and advantages of the present invention will become apparent in the following detailed description of the embodiment with reference to the accompanying drawings, of which:
FIG. 1 is an assembled sectional view of a conventional cosmetic applicator;
FIG. 2 is a partly-exploded sectional view of an embodiment of a cosmetic applicator according to the present invention, in which a cap is omitted;
FIG. 3 is a fragmentary assembled sectional view of the embodiment;
FIG. 4 is an enlarged fragmentary sectional view of the embodiment for illustrating the relationship among a cartridge, a plug member, an adjusting member and a sleeve of the embodiment;
FIG. 5 is a sectional view of a seat of the embodiment;
FIG. 6 is a sectional view of the adjusting member of the embodiment;
FIG. 7 is a sectional view of the embodiment, taken along line VII-VII of FIG. 6;
FIG. 8 is a sectional view of the embodiment, taken along line VIII-VIII of FIG. 6;
FIG. 9 is an exploded sectional view of a variation of the embodiment, in which the cap is omitted;
FIG. 10 is a fragmentary sectional view of the variation of the embodiment;
FIG. 11 is an enlarged fragmentary sectional view for illustrating a liquid passage of the embodiment; and
FIG. 12 is an enlarged fragmentary sectional view for illustrating an air passage of the embodiment.
DETAILED DESCRIPTION OF THE EMBODIMENT
Referring to FIGS. 2 and 3, an embodiment of a cosmetic applicator according to the present invention includes a casing 2, a cartridge 3, a sleeve unit 4, a core 5 and a cap 6.
With further reference to FIG. 4, the cartridge 3 is disposed in the casing 2, and includes a tube member 31 and a plug member 32. The tube member 31 is adapted for containing liquid cosmetic, and has an open end portion 311, a closed end portion 312 opposite to the open end portion 311, and a plurality of annular protrusions 313 formed on an inner surface of the open end portion 311. The plug member 32 is plugged into the open end portion 311 of the tube member 31, and has a shoulder section 321, a rear end section 322, a front end section 323, a positioning hole 324 and an annular protrusion 325. The shoulder section 321 abuts against an end of the open end section 311 of the tube member 31. The rear end section 322 extends from the shoulder section 321 into the open end portion 311, and has an outer surface. The front end section 323 is connected to the shoulder section 321 and is opposite to the rear end section 322. The positioning hole 324 extends through the rear end section 322, the shoulder section 321 and the front end section 323. The protrusion 325 is formed on the outer surface of the rear end section 322 and abuts airtightly against one of the protrusions 313 of the tube member 31. As such, a sealing effect between the outer surface of the rear end section 322 of the plug member 32 and the inner surface of the open end portion 311 of the tube member 31 is ensured. It is worth mentioning that, the number of protrusions 313 of the tube member 31 is not limited to what is disclosed herein; the tube member 31 may have only one protrusion 313 and still achieve the same effect.
The sleeve unit 4 includes a sleeve 41, a seat 42 and an adjusting member 43. The sleeve 41 is fixedly coupled to a front end of the casing 2, and has a rear end portion that is sleeved on the front end section 323 of the plug member 32, and that has a rear end abutting against the shoulder section 321 of the plug member 32. An outer surface of the sleeve 41 is connected fixedly to an inner surface of the casing 2, and an inner surface of the sleeve 41 defines a front hole 412 and a rear hole 413. The sleeve 41 further has two annular protrusions 414 that are formed in the inner surface at the rear end portion, and that abut airtightly against an outer surface of the front end section 323 of the plug member 32. It is worth mentioning that, the number of protrusions 414 of the sleeve 41 is not limited to what is disclosed herein; the sleeve 41 may have only one protrusion 414 and still achieve the same effect.
Further referring to FIG. 5, in this embodiment, a front end of the sleeve 41 is sleeved onto the seat 42, and the seat 42 has a body portion 422, a head portion 421, a plurality of air inlets 423 and a plurality of air channels 424. The body portion 422 is disposed in the front hole 412 of the sleeve 41, and the head portion 421 extends from the body portion 422 and out of the sleeve 41. The air inlets 423 are formed in an outer surface of the head portion 421. Each of the air channels 424 is formed in an outer surface of the body portion 422, and is in spatial communication with a respective air inlet 423, such that air entering the air channels 424 through the air inlets 423 would flow into the rear hole 413 of the sleeve 41. In this embodiment, the seat 42 further has a tip hole 425 formed in the head portion 421, a receiving hole 426 formed in the body portion 422, and two annular protrusions 427 formed on an inner surface of the body portion 422 and disposed proximate to the tip hole 425.
Further referring to FIG. 6, the adjusting member 43 is at least partially disposed in the sleeve 41, and has a first end section 431, a second end section 432, an axial hole 433 and an adjusting unit 434. The first end section 431 extends into the receiving hole 426 of the seat 42, and abuts airtightly against the protrusions 427 of the seat 42. The second end section 432 is opposite to the first end section 431 and extends through the positioning hole 324 of the plug member 32 and into the cartridge 3. The axial hole 433 extends through the first and second end sections 431, 432. The adjusting unit 434 is formed between the first and second end sections 431, 432, and is in fluid communication with the axial hole 433 and the air channels 424 of the seat 42.
With further reference to FIG. 7, the adjusting member 43 further has a main body 430 disposed between the first and second end sections 431, 432, and formed with the adjusting unit 434. The adjusting unit 434 has a plurality of spaced-apart adjusting plates 435, a gap 436 and an opening 437 (see FIG. 8). The adjusting plates 435 are connected to the main body 430. The gap 436 is formed in the adjusting plates 435 and the main body 430, and communicates the axial hole 433 with the air channels 424. The opening 437 is formed in one of the adjusting plates 435 that is proximate to the first end section 431 of the adjusting member 43, and is in spatial communication with the air channels 424. The axial hole 433 has a venting portion 438 and an insert portion 439. The venting portion 438 is disposed in the second end section 432. The insert portion 439 has a rear end that is connected to the venting portion 438, and a front end that is connected to the positioning hole 324 of the plug member 32 of the cartridge 3, and that has a diameter smaller than that of the venting portion 438.
The core 5 extends through the axial hole 433 of the adjusting member 43 and the sleeve 41, and has an absorbing segment 51 and a liquid output segment 52. The absorbing segment 51 extends through the sleeve 41 and the positioning hole 324 of the plug member 32 for absorbing the liquid cosmetic in the cartridge 3. The liquid output segment 52 extends out of the sleeve 41 and the seat 42. The absorbing segment 51 and the liquid output segment 52 are integrally formed as one piece in this embodiment.
It is worth mentioning that, with reference to FIGS. 9 and 10, the configuration of the core 5 may vary in a manner that the absorbing segment 51 of the core 5 is made of cotton, and the liquid output segment 52 is configured as a bristle and is coupled to the absorbing segment 51.
The cap 6 is coupled removably to the sleeve 41 for enclosing the liquid output segment 52 of the core 5 therebetween.
The foregoing describes the structure of the cosmetic applicator of the present invention. The process of achieving the purpose of this invention is described as follows.
Referring to FIG. 11, the tube member 31 of the cartridge 3 and the core 5 cooperatively define a liquid passage (I). When the cosmetic applicator is in use, the liquid cosmetic inside the cartridge 3 is absorbed by the absorbing segment 51 of the core 5, and flows through the liquid passage (I) toward the liquid output segment 52 of the core 5 and out of the cosmetic applicator.
Referring to FIG. 12, the air inlets 423, the air channels 424, the adjusting unit 434, the axial hole 433 (the venting and insert portions 438, 439) and the tube member 31 of the cartridge 3 cooperatively define an air passage (II). When the liquid cosmetic exits the cosmetic applicator via the liquid passage (I) (see FIG. 11), the amount of liquid cosmetic in the cartridge 3 is reduced, thus creating negative pressure. At this time, air enters the seat 42 through the air inlets 423, passes through the air passage (II) and into the cartridge 3 for canceling the negative pressure to balance the pressure inside the cartridge 3 such that the liquid cosmetic can be applied smoothly and consistently.
In sum, by the provision of the protrusions 313, 325, which create an airtight seal between the tube member 31 and the plug member 32, the liquid cosmetic will not leak into the internal space among the casing 2, the cartridge 3 and the sleeve unit 4, which would otherwise result in waste. In addition, by virtue of the provision of the adjusting member 43 extending in the sleeve 41 between the seat 42 and the plug member 32, and the protrusions 414, 427 of the sleeve 41 and the seat 42, the liquid cosmetic stored between the adjusting plates 435 of the adjusting member 43 will not leak through a gap between the sleeve 41 and the casing 2.
While the present invention has been described in connection with what is considered the most practical embodiment, it is understood that this invention is not limited to the disclosed embodiment but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
Patent Grant
9498044
