JP3538694B2 - Application container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an application container provided with an application body at the tip of a container body, and a bellows portion which can be contracted and extended back and forth with respect to the container body integrally formed in a part of the container body. . Examples of the application container include writing instruments storing liquids such as ink, black ink, and paint,
In addition, cosmetics containing liquids such as an eyeliner, lip color, and nail polish, and applicators containing liquids such as seasonings, machine oils, and cleaning liquids may be used.

[0002]

2. Description of the Related Art One example is shown in FIG. Outer cylinder 10
Inside 1, a container body 102 formed by blow molding or the like is arranged. A bellows portion 103 that can contract and extend back and forth in the longitudinal direction of the container body 102 is formed slightly behind the central portion of the container body 102. Further, a pressing portion 104 is provided behind the bellows portion 103 (the rear end of the container body 102), and a pressing body 105 is interposed therebetween. When the pressing body 105 is pressed by a finger or the like, The bellows 103 is contracted. The pressing body 1 is provided inside the container body 102.
A pressing rod 107 that moves forward by the pressing action of 05 and opens the valve mechanism 106 at the front is arranged to be able to move back and forth. An application body 108 made of a fiber bundle is attached in front of the container body 102. On the other hand, in front of the outer cylinder 101, an application body 108 is surrounded,
Also, a cap 1 for preventing drying by sealing.
10 is detachably attached.

[0003]

In recent years, consumers have come to desire cheap products. As a result, producers have become compelled to meet the demands.
And in order to meet the demand, the production price of the product must be reduced. Here, there are various means for reducing the production price of a product, and among them, there is a case where the number of parts is reduced. This is a particularly effective means for lowering the manufacturing cost of a product because the production of the parts to be reduced can be eliminated and the number of assembling steps is reduced. However, simply reducing the number of parts may degrade the originally required functions and quality.

[0004] Here, the applicant of the present application has tried to reduce the price of the product by reducing the outer cylinder 101 of the prior art. However, simply reducing the number of outer cylinders 101 has caused the following problems. One is
The problem is that when the container body 102 is gripped by hand, the central portion of the container body 102 is crushed by losing the gripping force, and when the pressing portion 104 is pressed, the container body 102 There is a problem that 103 shrinks only a little and refracts from the central part of the container body 102. This makes it easy to shrink the bellows of the container body.
This is because the thickness of the bellows portion was formed thin so that the bellows portion could be easily extended, and the thickness of the container body was also reduced. In the prior art, the above-mentioned problems, such as "collapse of the container body" and "bending of the container body", are prevented by disposing the outer cylinder outside the container body.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has an application body provided at the tip of a container body and a bellows capable of contracting and extending back and forth with respect to the container body. A container integrally formed with a part of the container body, wherein the thickness of the bellows portion is formed to be thinner than the thickness of the container body, and the thickness of the bellows portion is reduced .
Place a steady rest ring inside the steady rest ring.
The gist of the invention is that the valve rod is penetrated through the valve .

[0006]

FIG. 1 shows an example of a makeup tool. Specifically, it is an eyeliner having a brush head having a circular cross section at the tip. Reference numeral 1 denotes a container body formed by blow molding of polyethylene, polypropylene, nylon, ethylene / vinyl alcohol copolymer, or the like. A bellows portion 2 which can be contracted and extended in the longitudinal direction is formed. In addition, a bottom portion 3 is formed behind the bellows portion 2 to serve as a pressing portion 4. The central portion of the bottom 3 has a concave portion 5 in the inner direction of the container body 1. However, means for preventing a parting line generated at the time of molding from protruding from the surface of the bottom 3 is adopted. It is.

Further, the container body 1, the bellows portion 2, and the pressing portion 4 will be described in detail. The thickness of the bellows portion 2 is formed thinner than the thickness of the container body 1 and the pressing portion 4. ing. By making the thickness of the bellows portion 2 thin, the deformation of the bellows portion is facilitated, and by increasing the thickness of the container body and the pressing portion, unnecessary thickness in the container body and the pressing portion is increased. Deformation was prevented.
Further, when the bellows portion 2 is described in more detail, the thickness of the side portion 2a and the outer top portion 2b of the bellows portion 2 is formed to be thin, but the thickness of the inner top portion 2c is formed to be thick. ing. The outer apex 2b is easily deformed, while the inner apex 2c is made rigid to improve the spring property in contraction / extension (see FIG. 2). However, as shown in FIG. 3, the thickness of the side portion 2a and the outer top portion 2b of the bellows portion 2 and the thickness of the inner top portion 2c may be formed to be constant. The stress at the time of contraction / extension spreads uniformly throughout the bellows portion, and can prevent damage (such as cracks in the bellows portion) over a long period of time.

A holder 7 into which the brush fixing tube 6 is press-fitted and fixed is attached to the opening at the tip end of the container body 1. The holder 7 may be integral with the container body 1. A valve seat 7a is formed inside the holder 7. The valve rod 8 is always attached to the valve seat 7a (holder 7) rearward by a resilient member 9 such as a coil spring stretched between the valve seat 7a (holder 7) and the rear end. It is being rushed. However, the repelling member 9
May be disposed in front of the valve rod 8, and the valve rod 8
Alternatively, it may be appropriately integrated with the valve seat portion 7a (holder 7), and may be omitted if the bellows portion 2 has a sufficient spring property (elastic effect). The valve rod 8 extends inside the container body 1, and a rear end portion thereof forms a small space 10 with a rear end inner wall of the container body 1 (inside the concave portion 5 of the pressing portion 4).

The valve rod 8 is composed of two members, a first valve rod 11 and a second valve rod 12, and the distal end of the first valve rod 11 is provided with the valve seat portion 7a. A first valve portion 11a is formed in contact with the front end face of the first valve portion to close the valve hole 7b. On the other hand, a second valve portion 12a is formed at the distal end of the second valve rod 12 to abut the rear end surface of the valve seat portion 7a and close the valve hole 7b. In the present embodiment, the second valve part 12a is formed by making the diameter of the second valve rod 12 larger than the diameter of the first valve rod 11; And the second valve rod 12 may be integrally formed, and the first valve portion and the second valve portion may be formed as a large diameter portion. Between the rear part of the valve rod 8 and the bellows part 2, a steady ring 13 for preventing the valve rod 8 from swinging is interposed. A vertical groove 14 is formed in the steady ring 13 to improve the flowability of the liquid.

A round brush-like or flat brush-like application destination (brush ear) 1 formed by converging fibers is applied to the brush head fixing tube 6.
A pipe 16 formed integrally with the brush fixing tube 6 is inserted into the application destination 15 of the brush 5. Further, a porous body 17 serving as a temporary liquid reservoir for the application destination 15 is arranged at the rear end of the brush head fixing tube 6. And these porous bodies 1
The flow of the liquid to the application destination 15 at the start of use is improved by the pipe 7 and the pipe 16. Reference numeral 18 (dotted line portion in FIG. 1) denotes an air exchange slit, and air selects a relatively large and weak capillary force in the space of the porous body 17 from the air exchange slit 18. And then
It enters the container body 1.

Reference numeral 19 denotes a cap detachably attached to the container body 1 by a spiral structure. The cap 19 is a double cap (outer cap 21, inner cap 21) connected by a plurality of ribs 20. Cap 2
2). By making it a double cap,
In the unlikely event that a child swallows it, air circulation was ensured. In addition, the outer cap 21
A groove 23 is formed in a circumferential shape inside. As shown in FIG. 5, the crown 24 can be inserted. By inserting the crown 24, the upper hole of the cap 19 is closed, and the product has a good appearance. Reference numeral 25 denotes a ball for stirring the cosmetic liquid in the container body 1, but is not always necessary depending on the liquid used.

Next, the method of use and operation will be described.
When the pressing portion 4 of the container body 1 is pressed, the bellows portion 2 contracts and the inside of the container body 1 is pressurized, and the inner surface of the pressing portion 4 (recess 5) comes into contact with the rear end of the valve rod 8. Here, when the pressing operation is further continued, the first valve portion 11a is separated from the front end face of the valve seat portion 7a, and the valve hole 7b is formed.
Then, the liquid in the pressurized container body 1 is
In addition, it flows out and is supplied to the application destination 15. When further pressed in this state, the second valve portion 12a comes into contact with the rear end face of the valve seat portion 7a to close the valve hole 7b. In this way, the flow of the pressurized liquid in the container body 1 to the porous body 17 and the like is cut off. In this example, by performing the pressing operation, the valve is opened, and since the liquid in the container is pressurized, the liquid having a relatively high viscosity can be easily discharged. .

Next, the molding method of the container body 1 will be described.
It is preferable to use blow molding, which is less expensive than injection molding. Specifically, as shown in FIG. 6, when the parison 26 is extruded from the die head 27, the center bar 28 of the die head 27 is moved up and down so that the parison 26 becomes a thick portion, a thin portion, and again a thick portion. Move and extrude. And
The thin portion is positioned on the bellows portion of the mold 29, and in this state, the mold 29 is closed, an air nozzle 30 is inserted, and air is blown to form (see FIG. 7).

The example shown in FIG. 8 is an example in which a soft bag body 31 which shrinks sequentially according to the use of a liquid (cosmetic liquid) is provided inside the container main body 1. Bag 32 for storing liquid
However, since the liquid shrinks due to the decrease in the liquid, not only the air but also the bacteria contained in the air are not mixed into the liquid, which is very hygienic and prevents the liquid from drying. Also,
The example shown in FIG. 9 is an example in which a comb-shaped application destination 32 is attached instead of the application destination of the fiber convergence body of the previous example. It is mainly used as a hair dyeing tool. As described above, various application destinations can be attached.

[0015]

According to the present invention, there is provided an application container in which an application body is provided at the tip of a container body, and a bellows portion which can contract and extend back and forth with respect to the container body is formed integrally with a part of the container body. The thickness of the bellows portion is formed to be smaller than the thickness of the container body , and
Place a steady rest ring on the part and
Since the valve rod is made to penetrate the product, the production cost of the product can be reduced without lowering the original function and quality, so that a cheap product can be provided to the consumer.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing the present invention.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is an enlarged view of a main part showing a modification of a bellows part.

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a longitudinal sectional view showing a modification.

FIG. 6 is a vertical sectional view of a main part showing a molding method.

FIG. 7 is a vertical sectional view of a main part showing a molding method.

FIG. 8 is a longitudinal sectional view showing a modification.

FIG. 9 is a longitudinal sectional view showing a modification.

FIG. 10 is a longitudinal sectional view showing a conventional technique.

[Explanation of symbols]

1 container body 2 bellows 3 bottom 4 Pressing part 5 recess 6 Brush ear fixed tube 7 Holder 8 Valve rod 9 Repelling members 10 space 11 1st valve rod 11a First valve section 12 Second valve rod 12a Second valve section 13 Anti-sway ring 14 Groove 15 Application destination (calligraphy) 16 pipes 17 porous body 18 Air exchange slit 19 cap 20 ribs 21 Outer cap 22 Inner cap 23 grooves 24 caps 25 balls 26 Parison 27 Die head 28 center rod 29 Mold 30 air nozzle 31 bag 32 comb teeth

Claims (1)

(57) [Claims] An application container provided with an application body at a tip of a container body, and a bellows portion capable of contracting and extending back and forth with respect to the container body is formed integrally with a part of the container body. The thickness of the meat is made thinner than the thickness of the body of the container body, and at the same time,
A valve ring through the steady ring.
An application container characterized by being passed through .