JP2020146366A - Cosmetic applicator - Google Patents

Abstract

To provide a cosmetic applicator capable of easily positioning in a real fitting in an applicator temporarily fitting a leading shaft with a stopper ring.SOLUTION: A cosmetic applicator includes a shaft cylinder 10 for storing an application liquid, disposed at a storage part in a rearward inside part, and an application part 22 disposed at a tip inside part of the shaft cylinder, and supplies the application liquid stored in the storage part in the shaft cylinder to the application part. The leading shaft and the shaft cylinder respectively include a real fitting part and a temporary fitting part, the leading shaft 20 and the shaft cylinder respectively include whirl-stop ribs, and when the temporary fitting parts of the leading shaft and the shaft cylinder are temporarily fitted to each other, the mutual whirl-stop ribs are not engaged, however, in a real fitting state where the real fitting parts are fitted to each other, the mutual whirl-stop ribs are engaged with each other.SELECTED DRAWING: Figure 1

Description

The present invention is a cosmetic application tool for applying liquid cosmetics such as ink and eyeliner. More specifically, the supply of a fluid to the application portion is stopped in a state before the start of use such as storage or sales. The present invention relates to a cosmetic application tool that allows a fluid cosmetic to be conducted to the application portion when used by a user.

Conventionally, various coating tools have been proposed in which a coating portion is provided on the tip shaft of the tip of a barrel in which cosmetics are stored (see Patent Document 1).

In the coating tool described in Patent Document 1, when not in use, the coating liquid is held (temporarily fitted) by a ring-shaped stopper so as not to communicate with the coating portion. At the time of use of this, the user removes the stopper, and then the tip shaft is press-fitted into the shaft cylinder so that the coating liquid contained in the shaft body communicates with the coating portion so that the coating can be performed.

Japanese Unexamined Patent Publication No. 2012-157611

In the coating tool of Patent Document 1, in order for the user to press-fit the front shaft, positioning of the front shaft is unnecessary if the stopper is removed and the front shaft is press-fitted without removing it from the axle cylinder. However, if you accidentally remove the front axle from the axle, remove the stopper from the axle, and then try to attach the front axle to the axle, if the position of the front axle is not correct, the press-fitting between the front axle and the axle will be insufficient. This may cause liquid leakage, and it is difficult for the user to position and fit the front shaft into the axle so that the liquid does not leak.

In view of such circumstances, the present invention provides a cosmetic coating tool that can be easily positioned at the time of fitting in a coating tool for temporarily fitting a front shaft and a shaft cylinder using a stopper ring.

The present invention has a shaft cylinder in which the coating liquid is stored in the rear internal accommodating portion and a coating portion arranged inside the tip of the axle cylinder, and the coating liquid contained in the accommodating portion in the shaft cylinder is provided. A cosmetic coating tool supplied to the coating portion.
A main fitting portion and a temporary fitting portion are formed on the front shaft and the shaft cylinder, respectively.
The front shaft and the shaft cylinder each have a detent rib,
In the initial fitting state in which the temporary fitting portions of the axle cylinder and the front shaft are engaged with each other, the detent ribs are not engaged with each other, while the main fitting portions are fitted with each other. It is a cosmetic application tool characterized in that the anti-rotation ribs are sometimes engaged with each other.

In the present invention, it is preferable that a temporary fitting portion is formed on the coating portion side of the main fitting portion in the barrel.

In the present invention, it is preferable that the shaft cylinder is formed with a backlash prevention portion for supporting the front shaft from the inside in the radial direction at the time of temporary fitting.

In the present invention, it is preferable that the outer diameters of the front side and the rear side of the fitting portion are different.

In the present invention, it is preferable that the liquid oil-based cosmetics are contained in the shaft cylinder and the material of the shaft cylinder is PBT.

In the present invention, a seal ball is fitted into the front end portion of the axle cylinder via a joint, and in the present fitting state, the seal ball is accommodated in the accommodating portion of the axle cylinder, and the joint into which the seal ball is fitted. Is preferably formed with a protruding portion protruding from the rear end opening.

According to the coating tool of the present invention, in the initial fitting state in which the temporary fitting portions of the barrel and the front shaft are engaged with each other, the detent ribs are not engaged with each other, while the fitting portions are engaged with each other. Since the anti-rotation ribs are engaged with each other in the main mating state where the mating is performed, the anti-rotation ribs do not affect each other at the time of initial mating, so that a free position can be allowed and the rotation is allowed during temporary mating. Since the stop ribs are inserted into each other and appropriate positioning can be performed, and the rotation stop ribs are inserted into each other in the main mating state, the leading shaft can be positioned in the rotational direction with respect to the barrel, which is an excellent effect.

In the coating tool according to the embodiment of the present invention, the stopper ring is removed from the coating tool (prepared for use) and the initial fitting state is an explanatory view, in which (a) is an overall side view and (b) is (b). (a) is an overall vertical sectional view, (c) is a cross-sectional view taken along the line CC of (b), and (d) is an enlarged explanatory view of a portion D of (b). FIG. 1 is a component diagram of a seal ball receiver of a component in the coating tool of FIG. 1, (a) is a perspective view from the front, (b) is a perspective view from the front, and (c) is a view from the C direction of (a). Side view, (d) is a side view in a state of being rotated 90 degrees in the circumferential direction from (c), (e) is a vertical cross-sectional view along the line EE of (b), and (f) is from the rear. A perspective view, (g) is a rear view. In the coating tool of FIG. 1, it is a component drawing of a shaft cylinder of a constituent member, (a) is a perspective view from the front, (b) is a perspective view from the front, (c) is an enlarged view of the front part, (d). Is a side view, (e) is a vertical sectional view along the line EE of (b), (f) is a side view of a state rotated 90 degrees in the circumferential direction from (d), and (g) is (b). It is a vertical sectional view along the GG line of. In the coating tool of FIG. 1, it is a component view of the front shaft of the constituent member, (a) is a perspective view from the front, (b) is a perspective view from the front, (c) is a side view, and (d) is (a). ) Is a vertical cross-sectional view taken along the line DD, (e) is a rear view, and (f) is a perspective view from the rear. FIG. 1 is an explanatory view of an initial mating state of the (unused) front shaft and shaft cylinder to which the cap is attached and the stopper ring is attached in the coating tool of FIG. 1, and (a) is an overall side view, (a). b) is an overall vertical sectional view, and (c) is an enlarged explanatory view of the C portion of (b). In the coating tool of FIG. 1, the cap and the stopper ring are removed, and the front shaft is in the main fitting state with the axle cylinder. FIG. 1A is an overall side view, and FIG. 1B is a fully resting vertical sectional view. (C) is a cross-sectional view taken along the line CC of (b), and (d) is an enlarged explanatory view of the D portion of (b). In the coating tool of FIG. 1, the cap and the stopper ring are removed, and the front shaft is temporarily fitted to the axle. (A) is an overall side view, (b) is a fully resting vertical sectional view. (C) is a cross-sectional view taken along the line CC of (b), and (d) is an enlarged explanatory view of the D portion of (b).

Hereinafter, the coating tool according to the present invention will be described based on the embodiment shown in the figure.
1 to 7 are explanatory views of a coating tool using the knock-type feeding container according to the embodiment. FIG. 1 is an explanatory view of an initial fitting state in which the stopper ring is removed from the coating tool using the knock-type feeding container according to the embodiment. FIG. 2 is a component diagram of the seal ball receiver, FIG. 3 is a component diagram of the axle tube, and FIG. 4 is a component diagram of the front shaft. FIG. 5 is an explanatory view of the initial fitting state of the front shaft and the shaft cylinder with the cap attached and the stopper ring attached, and FIG. 6 is an explanatory view of the main fitting state in which the front shaft is fitted with the shaft cylinder in FIG. FIG. 7 is an explanatory view of a temporary fitting state in the process of fitting the front shaft with the axle.

The coating tool according to the embodiment has a shaft cylinder (shaft body) 10 in which the coating liquid is stored in a housing portion inside the rear, and a coating portion 22 arranged inside the tip of the shaft cylinder 10, and the shaft. This is a cosmetic coating tool that supplies the coating liquid contained in the housing portion 24 of the cylinder 10 to the coating portion 22.

A main fitting portion 32 and a temporary fitting portion 34 are formed on the front shaft 20 and the shaft cylinder 10, respectively, and the front shaft 20 and the shaft cylinder 10 have a detent rib 36 (see FIG. 3) and a detent rib, respectively. It has 38 (see FIG. 4).

In the initial fitting state (see FIGS. 1 and 5) in which the temporary fitting portions 34, 34 of the shaft cylinder 10 and the tip shaft 20 are engaged with each other, the detent ribs 36, 38 do not affect each other. On the other hand, in the main fitting state (see FIG. 6) in which the fitting portions 32 are fitted to each other, the detent ribs 36 and 38 are inserted into each other. In the process of the front shaft 20 moving from the initial fitting state and fitting with the axle cylinder 10 (the main fitting state is reached), the detent ribs 36 and 38 are engaged with each other and their rotations are restricted. It will be in a temporary fitting state (see Fig. 7).

Here, the coating tool holds a shaft cylinder 10 and a coating portion 22 which are provided with a fluid storage portion 24 inside and maintain a state in which the discharge port of the fluid is sealed with a stopper before the start of use. Before the start of use, the initial fitting state of being fitted to the barrel 10 via the stopper ring 26c is maintained (see FIG. 5), and then, as shown in FIG. 1, the stopper ring 26c is removed at the start of use. When the stopper ring 26c is disengaged as shown in FIG. 7, the stopper ring 26c moves in the axial direction by the length of the stopper ring 26c and is fitted into the shaft cylinder 10 as shown in FIG. The rear end of the pipe joint 16 is the seal ball (plug) 24b of the shaft cylinder 10 due to the movement of the front shaft 20 and the front shaft 20 arranged inside the front shaft 20 when the front shaft 20 is actually fitted to the shaft cylinder 10. The joint 14, the pipe joint 16, the pipe 18, and the like, which enable the supply of the fluid from the accommodating portion 24 to the coating portion 22 by abutting against the pipe and removing the plug, are provided. It relates to a fluid coating tool.

A substantially tubular seal ball 24b is fitted into the front end portion 10a of the shaft cylinder 10, and a joint 14 having a function of a receiving portion thereof is fitted. A seal ball 24b is fitted into the joint 14 before using the coating tool to seal the accommodating portion 24 of the shaft cylinder 10.

The coating tool according to the embodiment is a knock-type feeding container, and in the main fitting state shown in FIG. 6, the crown 12 arranged at the rear end of the shaft cylinder 10 is axially oriented with respect to the shaft cylinder 10. It is a container capable of feeding out the fluid contents in the accommodating portion 24 by pressing it forward.

The coating tool includes a feeding mechanism 28 that converts the pressing force of the crown 12 generated by the knock operation of the user into a rotational force, and is screwed into the drive cylinder 40 fixed to the shaft cylinder 10 and the drive cylinder 40. The piston body 44 which has the screw rod 30 and is connected to the screw rod 30 via the drive cylinder 40 by rotating the screw rod 30 by the force of the rotary motion converted from the linear motion by the feeding mechanism 28. The structure is such that the contents are fed out from the inside of the accommodating portion 24 by advancing. A spring is interposed between the drive cylinder 40 and the screw body 42.

[Axle cylinder 10]
The shaft cylinder 10 will be described.
As shown in FIG. 3, the shaft cylinder 10 has a substantially tubular shape, and the front end portion 10a is formed to have a diameter smaller than that of the main body having the accommodating portion 24. The front end portion 10a is formed with two spaced ribs (front fitting portion 32F, rear fitting portion 32R) as main fitting portions 32 in an annular shape on the outer periphery.

In the main fitting portion 32, the rib of the main fitting portion 32F on the coating portion side, that is, the front side is a temporary fitting portion 34 having a stepped front side. Specifically, at the front end portion 10a of the barrel 10, the front outer diameter is formed to be smaller than the rear outer diameter with the main fitting portion 32F as a boundary, and the step portion is close to a right angle. The step portion on the front side of the joint portion 32F is the step portion of the temporary fitting portion 34.

On the outer peripheral surface of the front end portion 10a of the shaft cylinder 10, a backlash prevention portion that supports the front shaft from the inside in the radial direction during temporary fitting is formed. A backlash prevention portion 50 formed of ribs at the time of temporary fitting is formed along the axial direction between the main fitting portion 32F on the front side and the main fitting portion 32R on the rear side.

Further, the outer diameters of the main fitting portion 32F on the front side and the main fitting portion 32R on the rear side are different. In front of the temporary fitting portion 34, a detent rib 36 that prevents the front shaft 20 from rotating with respect to the shaft cylinder 10 is formed.

The joint 14 into which the seal ball 24b is fitted is formed with a protruding portion 14d protruding from the rear end opening.

As shown in FIG. 3, the shaft cylinder 10 has a reduced diameter at the front end portion 10a, but a concave-convex stepped fitting portion 10b is formed on the inner peripheral surface of the rear end portion. Further, a vertical rib 10c is formed so as to project inward and extend in the axial direction slightly from the rear of the central portion. When the screw body 42 is attached to the axle cylinder 10, the screw body 42 is inserted forward from the opened rear end portion of the axle cylinder 10 and is advanced while attaching the groove portion on the outer periphery of the screw body 42 to the vertical rib 10c. I will fit it in.

As shown in FIG. 6, the crown 12 has an operating portion having a tubular shape closed by fitting a lid into the rear end thereof, and is rotatably fitted into the rear end portion of the shaft cylinder 10 (inside the fitting portion 10b). It is fitted to) and is exposed. The drive cylinder 40 is fitted into the crown 12 and fixed in the rotation direction, and a screw body 42 is mounted in the drive cylinder 40 so as to be fixed in the rotation direction and relatively movable in the axial direction.

In the rotary feeding container, as shown in FIGS. 1, 5 to 7, a joint 14, a pipe joint 16, a pipe 18, a toe shaft 20, and a coating portion 22 are attached to the front end portion 10a of the shaft cylinder 10. A fluid of the contents (in the embodiment, a coating liquid such as fluid cosmetics) is accommodated in the accommodating portion 24 of the shaft cylinder 10, and the fluid fed out from the accommodating portion 24 passes through the pipe 18 and is applied to the coating portion 22. It is discharged to the tip and can be coated by the coating portion 22. Further, after use, the cap 26 (see FIG. 5) is formed so as to be attached (fitted) to the front shaft 20 so as to cover the coating portion 22 and the front shaft 20.

In FIG. 5, reference numeral 24a is a stirring ball for stirring the contents in the accommodating portion 24 by reciprocating motion, and reference numeral 24b is a seal ball for preventing the outflow of the coating liquid in the barrel before the start of use.

Reference numeral 26a is an inner cap inside the cap 26, and reference numeral 26b is a spring for urging the inner cap rearward.

Further, reference numeral 26c is a stopper ring, and the joint 14, the pipe joint 16, the pipe 18, and the toe shaft 20 are located at positions that close the flow path of the coating liquid from the pipe 18 of the contents to the coating portion 22 when not in use. In order to position the coating portion 22, a ring-shaped portion is mounted between the rear end of the front shaft 20 and the front surface of the stepped portion 10a of the front end portion 10a of the axle cylinder 10. A part of the ring-shaped portion of the stopper ring 26c is separated, and a picking piece is integrally formed on the opposite side of the separated portion. By pulling the picking piece, the diameter of the ring-shaped portion is expanded from the separated portion. It can be removed from between the rear end of the front shaft 20 and the front end 10a of the axle cylinder 10.

As shown in FIG. 5, when not in use, the seal ball 24b is fitted into the inner diameter portion of the joint 14 to seal it so that the contents do not flow into the pipe 18.

On the other hand, as shown in FIG. 7, when in use, the user pulls out the stopper ring 26c from the axle cylinder 10 and pushes the front shaft 20 toward the rear end side. As a result, as shown in FIG. 6, the rear end small diameter portion of the pipe joint 16 abuts against the seal ball 24b, the seal ball 24b is removed from the inner diameter portion of the joint 14, and enters the accommodating portion 24. The fluid of the contents in 24 flows into the pipe 18 from the inner diameter portion of the joint 14 and the pipe joint 16, and the fluid is supplied to the coating portion 22 from the inside to enable coating.

In the present invention, the use of a seal ball is not limited to sealing the joint. For example, a thin film can be integrally provided on the joint 14 as a sealing member to replace the sealing ball 24b.

Further, as shown in FIG. 3, the shaft cylinder 10 has a front end portion 10a having a stepped smaller diameter than the accommodating portion 24 forming portion when viewed in the axial direction, and the tubular joint 14 and the tubular joint 14 and the shaft cylinder 10 are contained in the front end portion 10a. The pipe joint 16 is fitted in a state of being covered with the rear portion of the front shaft 20. Within the front portion of the tip shaft 20, a brush tip-shaped coating portion 22 in which a large number of fibers are bundled or made of open cells is sandwiched as a coating portion (coating body) 22 ahead of the pipe joint 16. The coating portion 22 can adopt an appropriate configuration other than this type of ear neck.

In the embodiment, the liquid oily cosmetics can be stored and used in the storage unit 24. Suitable liquid oily cosmetics in this embodiment are (a) 5 to 40% by weight of hydrofluoroether, (b) 20 to 60% by weight of low boiling point silicone oil, and (c) 2 to 10% by weight of silicone resin. 2 to 10% by weight of one or more thickeners selected from the group consisting of (d) crosslinked methylpolysiloxane, inulin stearate, and sucrose fatty acid ester, and (e) powders 10 to 40. It contains at least% by weight and has a viscosity of less than 400 mPa · s at 25 ° C. and a shear rate of 191.5 / s.

When the liquid oil-based cosmetics are stored in the storage portion 24, it is preferable to use polybutylene terephthalate resin (PBT resin) as the material of the shaft cylinder 10.

[Joint 14]
As shown in FIGS. 5, 6 and 7, the joint 14 into which the seal ball 24b is fitted is formed with a protruding portion 14d protruding from the rear end opening.

Specifically, as shown in FIG. 2, the joint 14 has a flange-shaped front portion 14a, and a narrow hole holding portion 14c is formed substantially in the center of the internal passage 14b. The joint into which the seal ball 24b is fitted is formed with a protruding portion 14d protruding from the rear end opening of the internal passage 14b. As shown in FIGS. 5, 6 and 7, in the protruding portion 14d, the stirring ball 24a in the accommodating portion 24 and the seal ball 24b pushed down into the accommodating portion 24 re-enter the internal passage 14b of the joint 14 due to their own weight. This is to prevent it from being blocked.

The joint 14 has a substantially tubular shape having a front portion 14a having an enlarged outer circumference in a flange shape, is fitted into the front end portion 10a of the shaft cylinder 10, is positioned by the front portion 14a, and is recessed into the front end portion 10a of the shaft cylinder 10. Is being prevented. A pipe joint 16 is inserted into the front opening of the joint 14 from the front side, and a liquid guiding pipe 18 is inserted and supported in the pipe joint 16 from the inside of the accommodating portion 24 toward the coating portion 22. Then, the cap 26 is fitted to the front end portion 10a so as to cover the coating portion 22 and the front shaft 20.

[Feeding mechanism 28]
In the feeding mechanism 28, as shown in FIG. 6, the screw rod 30 is a rod-shaped elongated body having a male screw 30a formed on the outer peripheral portion having a cross-sectional shape that matches the irregular cross-sectional hole on the inner circumference of the drive cylinder 40. A fitting portion that protrudes in the radial direction in a flange shape is formed at the front end portion thereof, and the piston body 44 is fitted into the fitting portion.

The piston body 44 includes a main body that is in sliding contact with the inner wall of the accommodating portion 24, and an uneven fitting portion in a hollow tubular portion that extends rearward from the main body. The fitting portion of the piston body 44 fits (fits) the fitting portion at the tip of the screw rod 30 to regulate the movement in the front-rear direction so as to be relatively rotatable. In this state, the piston body 44 has the shaft cylinder 10 It is arranged so as to be able to move forward and backward in the accommodating portion 24 of the above.

As shown in FIG. 6, the drive cylinder 40 of the crown 12 is provided with a deformed cross-sectional hole 40a such as an oval shape, and a screw body 42 having a female screw formed on the inner circumference is fixed to the shaft cylinder 10 to fix the drive cylinder. A state in which a screw rod 30 having a male screw 30a formed on the outer peripheral portion having a cross-sectional shape matching the deformed cross-sectional hole of 40 is screwed into the screw portion of the screw body 42 and passed through the deformed cross-sectional hole of the drive cylinder 40. The screw rod 30 is rotated by the rotation of the drive cylinder 40. By this rotation, the piston body 44 advances in the accommodating portion 24 and supplies the contents of the fluid such as cosmetics to the coating portion 22 in the front shaft 20.

[Front axis 20]
As shown in FIG. 4, the front shaft 20 has a substantially cone shape in which the front portion is tapered from the rear portion, and the front shaft 20 is temporarily fitted with the temporary fitting portion 34 of the front end portion 10a of the shaft cylinder 10 on the inner circumference. A temporary fitting portion 34 for this purpose, and a front rib 46 and a rear rib 48 for main fitting with the main fitting portions 32 (32F, 32R) of the front end portion 10a are formed over substantially the entire circumference. By being formed over substantially the entire circumference, the temporary pulling force between the front shaft 20 and the shaft cylinder 10 in the initial mating state is improved, and the front shaft 20 is prevented from falling off from the shaft cylinder 10 during transportation or the like. Can be done.

The front rib 46 and the rear rib 48 have a substantially trapezoidal cross-sectional shape along the axial direction. The cross-sectional shape of the front rib 46 and the rear rib 48 is not limited to a trapezoidal shape having edges at the corners, and may be a chamfered corner or an arc shape.

In the front shaft 20, the inner circumference of the front portion is formed in the shape of a cylindrical inner circumference accommodating the coating portion 22, and the engaging step portion 20a for fitting the pipe joint 16 is formed on the inner circumference of the central portion. Further, on the outer peripheral surface of the front shaft 20, an annular uneven portion 20b for fitting and fixing the cap 26 is formed.

The front side of the front shaft 20 with respect to the engaging step portion 20a is the inner circumference of the rear portion, and a plurality of detent ribs 38 for vertical grooves for preventing rotation are formed inside the uneven portion 20b.

On the inner circumference of the front shaft 20, a stepped locking portion 20c with which the flange 22a of the coating portion 22 abuts is formed in front of the engaging step portion 20a. The locking portion 20c is formed with grooves 20c1 and 20c2 having a triangular shape before and after the step. Since the grooves 20c1 and 20c2 guide the hair of the ear neck when the coating portion 22 is attached, it is possible to prevent the ear neck from tipping over (reverse direction).

In the coating tool of the embodiment, the coating portion 22 is held and the initial fitting state temporarily fitted to the barrel 10 via the stopper ring 26c is maintained before the start of use (see FIG. 1).

In the coating tool of the embodiment, when the stopper ring 26c is fitted when not in use as shown in FIG. 5, the front rib 46 of the front shaft 20 is temporarily fitted to the shaft cylinder 10 as shown in FIG. 5 (c). It is in contact with or in front of the portion 34, and the rear rib 48 is positioned so as to be depressed between the front and rear main fitting portions 32 (main fitting portions 32F, 32R). The detent rib 36 of the shaft cylinder 10 is not engaged with the detent rib 38 of the front shaft 20. Therefore, the leading shaft 20 can freely rotate with respect to the shaft cylinder 10. The rear rib 48 is positioned so as to be depressed between the front and rear main fitting portions 32 (main fitting portions 32F and 32R), but is composed of ribs for preventing backlash between the main fitting portions 32F and 32R. Since the backlash prevention portion 50 supports the rear rib 48 of the front shaft 20, rattling can be prevented.

When preparing for use, the initial fitting state is changed to the temporary fitting state shown in FIG. 7. Also in this case, the front rib 46 of the front shaft 20 is in contact with the temporary fitting portion 34 of the shaft cylinder 10 and is positioned. The backlash prevention portion 50 supports the rear rib of the front shaft 20 to prevent backlash. In this state, the detent rib 36 of the front shaft 20 is inserted into and engaged with the detent rib 38 of the shaft cylinder 10, and the front shaft 20 and the shaft cylinder 10 are detented.

Then, when the front shaft 20 is pushed in from the temporary fitting state of FIG. 7, the front rib 46 gets over the main fitting portion 32F on the front side from the temporary fitting portion 34 and engages with the main fitting portion 32F. Further, the rear rib 48 gets over and engages with the main fitting portion 32R. The tip shaft 20 moves in the axial direction by approximately the length of the stopper ring 26c, and is in the main fitting state in which the tip shaft 20 is directly fitted to the shaft cylinder 10. At the same time, the detent rib 36 of the front shaft 20 is completely inserted into the detent rib 38 of the shaft cylinder 10, so that the detent rib 38 of the shaft cylinder 10 can be more reliably detented.

According to the coating tool of the embodiment, the main fitting portion 32 (32F, 32R) and the temporary fitting portion 34 are formed on the shaft cylinder 10, and the shaft cylinder 10 is formed on the inner circumference of the front shaft 20. The front rib 46 for temporary fitting with the temporary fitting portion 34 of the front end portion 10a, and the front rib 46 and the rear rib 48 for main fitting with the main fitting portions 32 (32F, 32R) of the front end portion 10a are substantially abbreviated. It is formed all around. The front shaft 20 and the shaft cylinder 10 have detent ribs 36 and 38, respectively.

In the initial fitting state before the temporary fitting of the axle cylinder 10 and the front shaft 20 (before the temporary fitting portion 34 and the front rib 46 engage with each other), the detent ribs 36 and 38 do not engage with each other. It becomes. It is in a relative rotatable state.

On the other hand, in the temporary fitting state (the temporary fitting portion 34 and the front ribs 46 are engaged with each other), the detent ribs 36 and 38 are engaged with each other to be in a detent state.

Further, in the main fitting state (the main fitting portion 32 (32F, 32R), the front rib 46, and the rear rib 48 are connected to each other), the front shaft 20 and the axle cylinder 10 are connected and can be used.

Therefore, when the user removes the front shaft 20 in addition to the stopper ring 26c at the start of use, even if the front shaft 20 is refitted and finally fitted, the ribs 36 and 38 are in a state of engaging with each other. It can be press-fitted without slippage. Therefore, it is possible to prevent liquid leakage due to insufficient press-fitting.

Further, since the ribs 36 and 38 are engaged with each other to prevent rotation, it is possible to prevent the coating portion 22 in which the brush tips and fibers are bundled from being twisted when the user turns the front shaft.

Further, since the temporary pulling force (pulling force when the stopper ring 26c is present) in the initial fitting state can be strengthened, the front shaft 20 can be prevented from falling off from the shaft cylinder 10 during transportation or the like.

Here, Table 1 shows the pulling force of the samples A to F (each n = 5) of the conventional product in the initial mating state.

On the other hand, in the initial fitting state with the coating tool of the embodiment, the pulling force (n = 5) is 17.6 (N) at the average value (Ave) and 20.0 (N) at the maximum value (Max). ), The minimum value (Min) could be 14.3 (N). It is understood that a strong pull-out force is required, and even if vibration occurs during transportation, the leading shaft can be effectively prevented from falling off.

The coating tool of the present invention can be used as a cosmetic coating tool for cosmetic products.

10 Shaft cylinder 10a Front end 10b Fitting part 10c Vertical rib 12 Crown 14 Fitting 14a Front 14b Internal passage 14c Holding part 14d Protruding part 16 Pipe joint 18 Pipe 20 Tip shaft 20a Engaging step part 20b Concavo-convex part 20c Locking part 20c1, 20c2 Groove 22 Coating part 22a Flange 24 Storage part 24a Stirring ball 24b Seal ball 26 Cap 26c Stopper ring 28 Feeding mechanism 30 Screw rod 32 Fitting part 32F, 32R Front side, rear side main fitting part 34 Temporary fitting Parts 36, 38 Anti-rotation rib 40 Drive cylinder 42 Screw body 44 Piston body 46 Front rib 48 Rear rib 50 Backlash prevention part

Claims (6)

It has a shaft cylinder in which the coating liquid is stored in the rear internal accommodating portion and a coating portion arranged inside the tip of the axle cylinder, and the coating liquid contained in the accommodating portion in the shaft cylinder is applied to the coating portion. It is a cosmetic application tool to supply
A main fitting portion and a temporary fitting portion are formed on the front shaft and the shaft cylinder, respectively.
The front shaft and the shaft cylinder each have a detent rib,
In the initial fitting state in which the temporary fitting portions of the axle cylinder and the front shaft are engaged with each other, the detent ribs are not engaged with each other, while the main fitting portions are fitted with each other. A cosmetic application tool characterized in that the anti-rotation ribs are sometimes engaged with each other. The cosmetic coating tool according to claim 1, wherein a temporary fitting portion is formed on the coating portion side of the main fitting portion in the barrel. The cosmetic coating tool according to claim 1 or 2, wherein a backlash prevention portion that supports the tip shaft from the inside in the radial direction is formed on the shaft cylinder when temporarily fitted. The cosmetic application tool according to claim 1, wherein the outer diameter is different between the front side and the rear side of the main fitting portion. The cosmetic application tool according to claim 1, wherein a liquid oily cosmetic is contained in the shaft cylinder, and the material of the shaft cylinder is PBT. A seal ball is fitted into the front end portion of the axle cylinder via a joint, and the seal ball is accommodated in the accommodating portion of the axle cylinder in the main fitting state, and the rear end of the joint into which the seal ball is fitted. The cosmetic application tool according to claim 1, wherein a protruding portion protruding from the opening is formed.

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