JP7076284B2 - Direct liquid eyeliner - Google Patents

Description

The present invention relates to a direct-liquid eyeliner for cosmetics having a cap such as an eyeliner and an eyebrow, and relates to a direct- liquid eyeliner in which the cap is well fitted.

Conventionally, in a direct liquid type eyeliner such as an eyeliner, as a technique for locking a cap made of resin molding or the like to a shaft, as shown in FIGS. 5 to 9, a plurality of undercut ribs are provided in the cap. It is known that when the cap is fitted to a predetermined position, the ribs get over and engage with the fitting ribs on the circumference provided on the outer circumference of the shaft to maintain the fitting state of the cap.

Here, the undercut means to project to the inside (molding mold side) of the basic molding surface (in this case, the inner peripheral surface) of the cap parallel to the die cutting direction after molding. In addition, if it is a material having elasticity such as synthetic resin, even if there is a slight undercut, it is possible to die-cut by deforming the molded product without making a split mold or the like.

Further, as shown in FIG. 11, the shape of the undercut rib formed in the cap is such that the end portion of the rib is formed in a straight line.

The reason why the shape of the fitting rib on the cap side is straight is that the conventional method was to put the colorant directly into the resin material, so there were cases where vapor deposition and painting were not taken into consideration, but the wire of the conventional technique. The reason is that it is easy to process the mold because it can be processed by electric discharge machining.

Further, as shown in FIG. 5, when the direct liquid type eyeliner is a direct liquid type container, an adjuster (jabara) or the like is mounted in the direct liquid type eyeliner body to adjust the internal pressure of the container, and the cap is used. In some cases, an inner cap and a spring are provided in the cap in order to improve the sealing of the cap to prevent the coated portion from drying.

In this case, as shown in FIG.
(1) Before attaching the cap, the inner cap is not in contact with the central shaft.
(2) The inner cap and the center shaft start to hit while the cap is being attached. At this time, the cap has not been completely attached yet.
(3) When the cap fitting rib gets over the fitting rib on the main body side of the central shaft and is completely mounted, the spring fully exerts a force that can be sealed.
That is, the spring always pushes the inner cap while the cap is attached, and the inner cap transmits the force to the sealed portion of the central shaft. Therefore, especially in the case of a direct-liquid direct-liquid eyeliner container having an inner cap, it is necessary to design a cap removal / fitting value in consideration of the force of the spring.

For example, if the pull-out fitting value of the cap is smaller than the force of the spring, the cap will come off and the pen tip will dry, so that the cap cannot perform the sealing function. Therefore, in a direct liquid container equipped with an inner cap and a spring, a certain strong cap fitting force is required to maintain stable quality in consideration of the force of the spring. Normally, for example, the cap fitting value is set to a standard of 6 to 25N for a spring of 3.9N.

Jikkenhei 5-65583 Gazette

The cap has a rib for press-fitting to the rear part of the main body on the opening side of the protrusion for fitting the unevenness to the main body, and the main body has a tail plug protruding from the rear end to hit the protrusion of the cap. It is a writing tool used as a contact portion, and can prevent the cap from being damaged when the cap and the writing tool main body are fitted to each other.

The cap 20 is fitted to the shaft 10 by the engaging rib 21 formed on the inner surface of the cap 20 elastically abutting and engaging with the step portion 13 formed on the outer periphery of the shaft 10. In a writing tool with a cap that is maintained in the fitted state, the engagement of the engaging rib 21 does not cause an excessive stress on the cap 20 and prevents the surface of the cap 20 from being deformed. The engaging rib 21 is formed at the tip of a flexible piece 22 provided in a thin wall so as to extend from the inner surface of the cap 20 along the inner surface and have flexibility, and is formed between the flexible piece 22 and the inner surface of the cap 20. Formes a gap 23 that allows the flexible piece 22 to be displaced when the engaging rib 21 engages with the step portion 13.

The object of the present invention is to solve the following problems of the prior art. That is, there was no problem with the cap molded by directly mixing the colorant with the resin material, but with the cap that was painted or vapor-deposited on the outer surface of the container, the cap itself was fitted at room temperature and 5 ° C. There was a problem that it cracked.

The reason for this is that, as shown in FIG. 10, the cap expands by the fitting allowance (rib riding allowance) when the cap is attached and detached, but the film thickness of the paint and aluminum is formed on the outer portion of the cap that has been vapor-deposited or painted. Therefore, since the film is hard to some extent, there is no place for force to escape at the time of mounting and detaching, and the film thickness of the paint and aluminum is peeled off, and in the worst case, the cap is cracked.

In this way, the problem with conventional products is that when a cap that has undergone transfer film processing, vapor deposition, or painting is attached to the outer surface of the cap and then removed, the cap may crack in an environment of room temperature and 5 ° C, or a paint or aluminum film may be formed. There was a problem that the thickness was peeled off.

Therefore, the subject of the present invention is an excellent direct liquid type in which a cap that has been subjected to transfer film processing, vapor deposition, or painting is attached to the outer appearance of the cap, and the cap does not break even if the cap is detached or frequently attached and detached in an environment of room temperature and 5 ° C. To provide an eyeliner .

The present invention has been made focusing on the problems of such conventional techniques, and an object of the present invention is to provide a direct-liquid eyeliner in which cap cracks (cap cracks) are unlikely to occur. To solve the conventional problems, the present invention

A direct-liquid eyeliner consisting of a direct-liquid eyeliner body and a cap that is detachably fitted to the direct-liquid eyeliner body.
The cap is a cap having an elastic member at the bottom and an inner cap urged by the elastic member inside.
The cap is a cap obtained by subjecting the appearance of the cap to transfer film processing, vapor deposition, or painting.
When the cap is fitted to the direct liquid type eyeliner main body, the cap fitting rib on the inner surface of the cap slides while abutting against the central shaft fitting rib on the outer periphery of the direct liquid type eyeliner main body. In a direct liquid eyeliner with a cap, the cap is held in a state of being fitted to the direct liquid eyeliner body by overcoming the fitting rib and fitting.
The shape of the cap fitting rib has a convex shape with no gentle corners in the axial cross section, and the shape of the vertical cross section of the shaft is a fan surface shape.
The central shaft fitting rib is formed of a circumferential rib, and is formed.
Provided is a direct liquid type eyeliner in which a circle on the outer circumference of the center shaft fitting rib and an arc on the inner circumference of the cap fitting rib are formed concentrically.

According to the direct liquid type eyeliner of the present invention, the cap fitting rib 21 is the center shaft fitting rib 1 when the cap is fitted.
In order to get over 3, the cap is displaced by the fitting allowance (rib riding allowance). In the direct liquid type eyeliner of the present invention, as shown in FIGS. 1, 2 and the like, the cap fitting ribs form an arcuate arcuate end portion, so that the conventional linear end portion (FIG. 7). The displacement (spread amount) of the cap is smaller than that of the cap (FIGS. 13, 14, and 15).

Therefore, since the stress applied to the cap 20 is dispersed and the fitting allowance (rib riding allowance) is small, the deformation of the outer surface of the cap 20 is also slight. Therefore, even if the cap 20 is attached and detached in a cold environment of 5 ° C., the cap 20 withstands frequent attachment and detachment and cracks (cap cracks) do not occur, and the transfer film, painting, vapor deposition, etc. on the surface of the cap 20 are not generated. Does not peel off.

Therefore, according to the direct liquid type eyeliner of the present invention, the spread amount of the cap can be reduced and the stress applied to the cap can be dispersed by fitting the cap (FIG. 15), and the cap can withstand frequent attachment / detachment and crack (cap). No cracking) or the like, and the transfer film, paint, vapor deposition, etc. on the surface of the cap does not peel off. Therefore, it is possible to reduce the cost of the direct liquid eyeliner and maintain the aesthetic appearance of the direct liquid eyeliner for a long period of time.

Further, in the direct liquid type eyeliner of the present invention of the type having an inner cap inside the cap, when the cap 20 is fitted until it hits the contact step portion 12 of the central shaft 11, as shown in FIG. The inner cap 22 has one end abutted against the central shaft 11 by the spring 23 to seal the pen tip, and at the same time, the cap 20 is subjected to a strong force in the detaching direction by the spring 23, and the cap is detached if the cap fitting force is small. Since the direct liquid type eyeliner of the present invention can exert a sufficient fitting force, the cap does not easily come off.

As a result, regarding the cap fitting value, if the cap fitting allowance is lowered, the cap fitting value may become small and the function of the cap may not be fulfilled. The area for locking with the center shaft fitting rib can be increased (FIG. 15), and the cap fitting value within the standard value can be realized.

That is, the cap fitting rib 21 of the present invention can be particularly preferably applied to a direct liquid container equipped with an inner cap and a spring, rather than the conventional linear cap fitting rib.

Further, in the direct liquid type eyeliner of the present invention, which is a cap in which a transfer film is processed, vapor-deposited or painted on the outer appearance portion of the cap, the film thickness of the paint and aluminum is formed on the outer appearance portion. Since it is hard to some extent, there is no place for force to escape when it is attached and detached, and the film of paint and aluminum may peel off or the cap may crack. Since the allowance (rib ride allowance) is small, the deformation of the outer surface of the cap 20 is also slight. Therefore, even if the cap 20 is attached and detached in a cold environment of 5 ° C., the cap 20 withstands frequent attachment and detachment and cracks and the like do not occur, and the transfer film, coating, vapor deposition, etc. on the surface of the cap 20 are peeled off. There is no.

The drawing which shows the cap which is the part of one Embodiment of this invention. The drawing which shows the fitting state of the cap which is the part of one Embodiment of this invention, and the center pole. The drawing of the direct liquid type eyeliner which removed the cap which is an Example of this invention. The drawing which shows the state which the cap fitting rib which is one Example of this invention gets over the central shaft fitting rib. A drawing illustrating the cross-sectional shape of a conventional direct-liquid eyeliner . A drawing of a direct-liquid direct-liquid eyeliner with the cap of the conventional direct-liquid eyeliner removed. Drawing of the cap of the conventional direct liquid eyeliner . The drawing which shows the component structure of the direct liquid type eyeliner of the prior art. The drawing explaining the mounting operation of the cap of the conventional direct liquid type eyeliner . A drawing showing that the cap of the conventional direct-liquid eyeliner expands by the fitting allowance. The drawing explaining the stress when the cap fitting rib of the prior art direct liquid type eyeliner gets over the fitting rib of a central shaft. The drawing explaining the operation of the conventional cap and the cap of one Embodiment of this invention. The drawing which compared the fitting allowance of the conventional cap and the cap of one Embodiment of this invention. A diagram comparing the spread of the outer diameter of the conventional cap and the cap of one embodiment of the present invention. The drawing which compared the way of applying stress of the conventional cap and the cap of one Example of this invention. The drawing which shows another embodiment of the cap which is a part of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to these examples.

As shown in FIGS. 1 to 4, the direct-liquid eyeliner of this embodiment includes a cap 20 that is detachably fitted to the central shaft 11 of the direct-liquid eyeliner main body 10. As shown in FIG. 3, the direct-liquid eyeliner main body 10 has a narrow central shaft 11 whose tip end side fits with the cap 20, and the end surface of the cap 20 abuts on the base end of the central shaft 11 in the axial direction. It has a right-angled contact step portion 12, and also has a center shaft fitting rib 13 at a position on the outer periphery of the center shaft 11 and close to the contact step portion 12. The central shaft fitting rib 13 has a shape formed in an annular shape over the entire circumference in the circumferential direction of the central shaft 11. The cap 20 operates as shown in FIG. 12, and the cap 20 is attached / detached by fitting the cap 20 into the central shaft 11 of the direct liquid eyeliner main body 10.

As shown in FIGS. 13 to 16, the cap 20 has a bottomed cylindrical shape that fits into the central shaft 11 with a slight gap, and has an opening side as shown in FIGS. 1, 2, and 4. The cap fitting ribs 21 undercut on the inner surface of the end portion are provided at four locations in the circumferential direction. In the embodiment of the present invention, four cap fitting ribs 21 are provided, but the number is not limited to this, and an appropriate number can be provided.

As shown in FIG. 4, the cap fitting rib 21 is positioned so as to get over the center shaft fitting rib 13 when the cap 20 is fitted until it comes into contact with the contact step portion 12 of the direct liquid type eyeliner main body 10. It is provided.

As shown in FIG. 4, the shape of the cap fitting rib 21 is such that the shape of the axial cross section (EE') is a convex shape with no gentle corners, and the vertical cross section (FF) of the shaft is formed. The shape of') is an arc shape like an elongated fan surface of a fan surrounded by an arc centered on the central axis of the direct liquid type eyeliner . Therefore, as shown in FIG. 1, the end portion has a cross-sectional shape (FF') formed into an arc shape.

Here, as shown in FIGS. 1 and 2, the arcuate shape means that when the cap fitting rib 21 is sliced into round slices, the shape of the cross section (FF') is centered on the central axis of the direct liquid eyeliner . It means a shape like an elongated fan surface of a fan surrounded by an arc. Further, the shape of the axial cross section (EE') is a convex shape without a gentle angle, and is a shape that can be fitted with the center pole fitting rib 13.

The cap fitting rib 21 can be formed by integrally molding the cap 20 with resin. This can be formed by high-precision mold processing using high-precision mold processing technology by discharging copper electrodes.

The material of the cap 20 and the cap fitting rib 21 is not particularly limited as the material used for the normal cap 20, but a synthetic resin such as polypropylene is preferably used.

For decorative reasons, the surface of the cap 20 may be molded by directly containing a colorant in the molding material of the cap 20, or the surface of the cap may be coated with an aluminum film or a coating film by vapor deposition or painting. If the surface of the cap is coated with an aluminum film or a coating film, the cap is easily cracked. However, in the direct liquid type eyeliner of the present invention, the stress applied to the cap is dispersed, so that the cap is coated with an aluminum film or a coating film. It can be used particularly preferably even when it is used.

As shown in FIG. 3, a central shaft fitting rib 13 is formed by a circumferential rib on the outer periphery of the central shaft 11 of the direct liquid type eyeliner main body 10 of the present invention.

Then, as shown in FIG. 2, the circle on the outer circumference of the central shaft fitting rib 13 and the arc on the inner circumference of the cap fitting rib 21 are formed concentrically. If the cap 20 is largely deviated from the concentricity, the cap 20 is not properly attached and detached, which may cause the cap to crack.

With the above cap fitting rib 21, in the direct liquid type eyeliner of the present invention, as shown in FIGS. 2 and 3, when the cap 20 is attached / detached, the arc-shaped cap fitting rib 21 becomes the center shaft fitting rib. The arc-shaped end of the cap fitting rib 21 slides on the 13 while abutting on the entire length in the circumferential direction, and the cap 20 is attached / detached over the center shaft fitting rib 13.

In the direct liquid type eyeliner of the present invention, since the arc-shaped cap fitting rib 21 is provided on the cap 20 side, as shown in FIG. 14, when the cap 20 is attached and when the cap 20 is removed, the cap 20 The spread amount was 0.36 mm in the prior art, but in the present invention, it can be suppressed to 0.21 mm.

Further, as shown in FIG. 15, the stress applied to the cap 20 when the cap 20 is attached and when the cap 20 is removed can also be dispersed.

Further, in the conventional direct liquid type eyeliner , if the cap fitting allowance is lowered, the cap fitting value becomes low and the function of the cap cannot be fulfilled. However, in the direct liquid type eyeliner of the present invention, it is shown in FIG. As described above, by making the shape of the cap fitting rib 21 arcuate, the range for holding the central axis fitting rib 13 of the direct liquid type eyeliner main body 10 can be widened, so that it is within the standard value (6 to 25N). A large cap fitting value can be achieved. In the embodiment of the present invention, the cap fitting value was measured using a push-pull gauge.

When the cap 20 of the direct liquid type eyeliner is a direct liquid type direct liquid type eyeliner in which the inner cap 22 and the spring 23 are mounted inside the cap 20, the inner cap is as shown in FIG. The cap 20 abuts one end of the spring 23 on the central shaft 11 to seal the pen tip, and at the same time, the cap 20 is subjected to a force in the detaching direction by the spring 23, but the cap fitting rib 21 is fitted with the central shaft fitting rib 13. It prevents the cap 20 from coming off.

Therefore, in the direct liquid container to which the inner cap 22 and the spring 23 are mounted, a certain strong cap fitting force is required in consideration of the force of the spring 23 (the cap fitting value is the cap fitting value for the spring 3.9N). Set to a standard of 6 to 25N).

Therefore, since the cap fitting rib 21 of the present invention can realize a larger cap fitting value than the conventional linear rib, it can be particularly preferably applied to a direct liquid container equipped with an inner cap 22 and a spring 23. In this embodiment, the spring 23 is used, but the member is not limited to this as long as it is a member for urging the inner cap 22, and other elastic members can also be used.

The test results of the direct-liquid eyeliner of the present invention are described below in comparison with the conventional direct-liquid eyeliner . The direct liquid eyeliner used is the direct liquid eyeliner of the present invention and the prior art showing the cap fitting allowance and the cap spreading amount shown in FIGS. 13, 14 and 15. That is, in the direct liquid type eyeliner of the present invention, the cap fitting rib 21 has an arc shape (the fitting allowance of the cap 20 is 0.105 mm, and the spread amount of the cap 20 is 0.21 mm).
In the conventional direct-liquid eyeliner , the cap fitting rib is linear (the fitting allowance of the cap 20 is 0.180 mm, and the spread amount of the cap 20 is 0.36 mm).

First, in an environment of room temperature of 26 ° C., the cap 20 that had been vapor-deposited and painted was detached from the central shaft 11 five times and repeatedly attached, and it was confirmed whether or not the cap was cracked. The results will be described below as Examples 1 and 2.

(test conditions)
It was confirmed whether the cap 20 was coated (thickness 15 to 21 μm), and the cap 20 was detached and attached 5 times from the state where the cap 20 was attached to the central shaft, and the cap cracked. It was carried out in an environment of room temperature of 26 ° C.
(test results)
3 out of 20 direct liquid eyeliners of the conventional technology are cracked.
No cracks in the 20 direct liquid eyeliners of the present invention.

(test conditions)
It was confirmed whether the cap 20 was cracked by repeatedly removing and attaching the cap 20 from the state where the cap 20 was attached to the central shaft 11 on the cap 20 which had been subjected to thin film deposition (thickness 20 to 24 μm). It was carried out in an environment of room temperature of 26 ° C.
(test results)
One of the 20 direct-liquid eyeliners of the conventional technology cracked.
No cracks in the 20 direct liquid eyeliners of the present invention.

Next, the test was carried out by immediately taking it out from the refrigerator at 5 ° C. Other conditions are the same as those in Examples 1 and 2. The results will be described below as Examples 3 and 4.

(test conditions)
It was confirmed whether the cap 20 was coated (thickness 15 to 21 μm), and the cap 20 was repeatedly detached and attached 5 times from the state where the cap 20 was attached to the central shaft 11 to cause cap cracking. The test was carried out by immediately taking it out from the refrigerator at 5 ° C.
(test results)
Of the 20 direct-liquid eyeliners of the conventional technology, 14 cracks occurred.
No cracks in the 20 direct liquid eyeliners of the present invention.

(test conditions)
From the state where the cap was attached to the center shaft of the cap that had been subjected to thin film deposition (thickness 20 to 24 μm), it was repeatedly detached and attached 5 times, and it was confirmed whether the cap cracked. The test was carried out by immediately taking it out from the refrigerator at 5 ° C.
Two of the 20 direct-liquid eyeliners of the conventional technology are cracked.
No cracks in the 20 direct liquid eyeliners of the present invention.

As described above, in Examples 1 to 4, no cap cracking occurred in the direct-liquid eyeliner of the present invention in both the environment of room temperature of 26 ° C. or the environment of immediately taking out from the refrigerator at 5 ° C. and conducting the test. ..

In addition, the durability test was also carried out below. The result is described as Example 5.

In the direct-liquid eyeliner of the present invention, no cap cracking occurred even after repeated fitting 1000 times in an environment of room temperature of 26 ° C.
In addition, it was confirmed that the cap fitting value was within the standard, and the function of the cap 20 having good durability was realized.

Furthermore, it was confirmed that the caps with thick vapor-deposited films and coating films did not crack in an environment of 5 ° C. The test results are described below as Example 6.

(test conditions)
Does the cap 20 with the painted product (thickness 18 to 26 μm) and the vapor-filmed product (thickness 30 to 36 μm) have the cap 20 attached to the central shaft 11 and then detached and attached repeatedly 5 times to cause cap cracking? confirmed. The test was carried out by immediately taking it out from the refrigerator at 5 ° C.
(test results)
Painted product (thickness 18-26 μm) (invention) No cracks out of 20.
Evaporated product (thickness 30 to 36 μm) (invention) No cracks in 20 of 20.

It goes without saying that the present invention is not limited to the examples described above, and various modifications may occur. That is,

The center shaft fitting rib 13 is formed over the entire circumference of the center shaft 11 of the direct liquid type eyeliner main body 10, but as long as it can be fitted with the cap fitting rib 21, even if it is partially chipped, it is a book. Included in the scope of the invention.

Further, as shown in FIG. 16, the external shape of the cap 20, the rear shaft, the cross-sectional shape of the cap 20 in the JJ sectional view (including the fitting rib shape), and the shape of the central shaft 11 (the shape of the central shaft fitting rib 13). The length of the arc cap fitting rib 21 and the number of arc cap fitting ribs 21 are the same in the cross-sectional view of KK, regardless of the shape of all of them. It is not limited and is included in the scope of the present invention.

10 Direct liquid eyeliner body 11 Central axis 12 Contact step 13 Central axis fitting rib 20 Cap 21 Cap fitting rib 21a Arc-shaped end 22 Inner cap 23 Spring

Claims (1)

A direct-liquid eyeliner consisting of a direct-liquid eyeliner body and a cap that is detachably fitted to the direct-liquid eyeliner body.
The cap is a cap having an elastic member at the bottom and an inner cap urged by the elastic member inside.
The cap is a cap obtained by subjecting the appearance of the cap to transfer film processing, vapor deposition, or painting.
When the cap is fitted to the direct liquid type eyeliner main body, the cap fitting rib on the inner surface of the cap slides while abutting against the central shaft fitting rib on the outer periphery of the direct liquid type eyeliner main body. In a direct liquid eyeliner with a cap, the cap is held in a state of being fitted to the direct liquid eyeliner body by overcoming the fitting rib and fitting.
The shape of the cap fitting rib on the inner surface of the cap has a convex shape with no gentle corners in the axial cross section, and the shape of the vertical cross section of the shaft is a fan surface shape.
The central shaft fitting rib is formed of a circumferential rib, and is formed.
A direct-liquid eyeliner in which the circle on the outer circumference of the center shaft fitting rib and the arc on the inner circumference of the cap fitting rib are formed concentrically.

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