JPH07213982A - Applicator - Google Patents

Abstract

(57) [Summary] [Structure] In an applicator in which an applicator is inserted into the tip through hole of a barrel containing a liquid therein, a plurality of ribs are axially provided on the inner wall of the tip through hole of the barrel. The ribs are formed in the same direction, and an elastic portion is continuously provided at a position inward of the tip of the barrel of these ribs so that the rear is inclined toward the axis, and the pen tip is inserted into the elastic portion and fixed. Ingredient [Effect] Since the inside and outside of the applicator communicate with each other, the liquid and the air can be reliably exchanged, the application mark is not blurred, and the applicator is securely fixed to the barrel. There is.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid applicator such as a black ink, a paint, a writing liquid such as a liquid, a cosmetic liquid such as an eyeliner and a lip color, a handwriting correction liquid, and an adhesive.

[0002]

2. Description of the Related Art Conventionally, as an applicator, it is known that an applicator is inserted into a tip through hole of a barrel containing a liquid. In order to incorporate the liquid in the barrel, fibers that are bundled in the longitudinal direction, that is, what is called batting, which absorbs the liquid and is housed in the barrel,
There is one in which a liquid storage chamber is provided in the barrel and the liquid is directly stored in the liquid storage chamber. Whichever method contains the liquid, the liquid contained in the application body inserted into the tip through hole of the barrel can be conducted to enable the application. In such an applicator, the applicator needs to be securely fixed to the barrel. Regarding the fixing of the applicator to the shaft cylinder, a holding cylinder connected to the front end through hole of the shaft cylinder is projected in the official gazette of Japanese Utility Model Laid-Open No. 3-74992, and a step portion of the publication is provided in the middle part of the applicator. And a small diameter portion is formed through a front tapered portion, the small diameter portion of the applicator body is inserted into the holding cylinder, and the small diameter portion front taper portion is locked to the tapered tip edge of the shaft cylinder and has a small diameter. There is disclosed a structure in which a step portion at the rear end of the portion is locked to a rear end edge of the holding cylinder.

[0003]

The problem is that the liquid cannot be reliably exchanged with air during coating, and the discharge amount of the liquid tends to decrease. That is, when the liquid in the barrel is discharged through the applicator to the outside of the applicator at the time of coating, the pressure in the barrel is reduced by the amount of decrease in the liquid. Discharging becomes difficult, and the problem that the application mark is faint is likely to occur.
This is the same regardless of whether the applicator is of the type in which the liquid is occluded in the batting and is built into the barrel, or the applicator of the type that directly stores the liquid in the barrel. When fixing the applicator to the shaft cylinder as described above, it is difficult to secure a passage for exchanging liquid and air because the taper portion in front of the small diameter part of the applicator is locked to the tapered tip edge of the shaft cylinder. Cheap. Further, although the above-mentioned coated body is generally formed by step grinding, there is also a problem that the process is complicated and the manufacturing cost of the coated body is high.

It is an object of the present invention to provide an applicator having a structure for inserting and applying an applicator, which ensures reliable exchange of liquid and air during application.

[0005]

According to the present invention, there is provided an applicator in which an applicator is inserted into a tip through hole of a barrel containing a liquid therein. Ribs are formed in the longitudinal direction of the shaft, and elastic parts are continuously provided at positions inward of the tip of the cylinder of these ribs so that the rear part is inclined toward the axis, and the applicator is inserted into the elastic part. The gist is an applicator characterized in that

[0006]

In the applicator according to the present invention, since a plurality of ribs are formed in the axial longitudinal direction in the tip through hole of the shaft cylinder into which the applicator is inserted, the inside and the outside of the applicator are the surface of the applicator. Since the space surrounded by the rib and the inner wall of the shaft cylinder communicates with each other, the liquid and the air can be reliably exchanged.
Further, since the applicator is inserted inside the shaft cylinder rather than the elastic part of the rib, the applicator is fixed so that the elastic part of the rib bites into the applicator after the applicator is inserted into the shaft cylinder. The applicator is securely fixed to the barrel.

[0007]

The present invention will be described below with reference to the accompanying drawings. FIG. 1 is a vertical sectional view of a knock type applicator showing an embodiment of the present invention, and FIG. 2 is an enlarged view of a main part thereof. Figure 3
Is the one with the coating body omitted from FIG. FIG. 4 shows I of FIG.
It is a -I line cross-sectional view. Reference numeral 1 is an applicator made of fiber,
It is an application body made of a foamed material such as an application destination. Application body 1
Is a front shaft 2 with a small diameter at the front (upward in the figure) and a large diameter at the rear.
Is inserted into the small diameter portion of the tip through hole 3.

A plurality of ribs 4 are formed on the inner wall of the front end through hole 3 of the front shaft 2 in the longitudinal direction of the shaft. The plurality of ribs 4 are provided with an elastic portion 4b at a position inward of the tip of the front shaft 2 via a step portion 4a so that the rear portion thereof is inclined toward the axis. The diameter of the circle inscribed at the rear end position of the elastic portion 4b is set to be smaller than the diameter of the coating body 1. Therefore, the applicator body 1 is inserted into the tip through hole 3 of the front shaft 2 so as to expand the elastic portion 4b, and the stepped portion 1a of the applicator body 1 and the stepped portion 4a of the rib 4 contact and are fixed. To be done. The elastic portion 4b may be directly provided on the rib 4. The stepped portion 1a of the applicator body 1 has a function of contacting the stepped portion 4a of the rib 4 to position the insertion as described above and preventing the applicator body 1 from sinking into the shaft cylinder beyond that position. is doing. However, depending on the strength and shape of the elastic portion 4b, the stepped portion 1a of the coating body 1 may be omitted, and in this case, the manufacturing cost of the coating body 1 is lower, which is preferable.

At the rear of the applicator 1, a liquid occlusion body 5 composed of a batting which is a fiber converging body, a porous body of a soft resin, or the like is connected in series, and the rear part of the applicator 1 is provided with the liquid occlusion body 5. It is inserted at the front end.

At the rear of the liquid occlusion body 5, a lid 7 having a forwardly projecting cylindrical portion 6 is arranged. The protruding cylinder portion 6
Has its front portion inserted in the rear portion of the liquid occlusion body 5, and the lid body 7 is fixedly attached to the rear end of the front shaft 2 and the stepped portion of the inner wall of the rear shaft 8 so that the rear shaft 8 It serves as a lid for the liquid storage chamber 9 formed inside.

A seat portion 6a is formed on the lower portion of the inner wall of the projecting tubular portion 6, and the seat portion 6a is slidably disposed inside the projecting tubular portion 6 and is provided by an elastic member 10 such as a coil spring. Valve portion 11 provided on the valve body 11 biased rearward
It abuts a and constitutes a valve.

The valve body 11 has a rear cylinder portion 11b with a lid body 7.
And extends into the liquid storage chamber 9, and the rear portion of the rear tubular portion 11b is inserted and fixed to the front end of the tubular valve opening body 12 arranged in the liquid storage chamber 9.

The valve opening body 12 is inserted into the bottomed cylindrical portion 13a of the movable portion 13 whose rear portion is the bottom portion of the liquid storage chamber 9. There is a slight gap between the rear end of the valve opening body 12 and the bottom surface of the bottomed tubular portion 13a. This is a play when the bottomed tubular portion 13a is pressed forward to open the valve. In addition, the valve opening body 12 and the bottomed cylindrical portion 13
It is also possible to fix a and. In this case, the valve opening body 12
May or may not be fixed to the rear tubular portion 11b of the valve element 11, but is preferably not fixed considering the necessity of play during pressing.

A movable part 13 which is the bottom of the liquid storage chamber 9.
Is integrally formed from a bottomed tubular portion 13a and a thin wall portion 13b connecting the inner wall of the liquid storage chamber 9, and the bottomed tubular portion 13a is axially moved by contraction and extension of the thin wall portion 13b. It can move elastically. The thin portion 13b has a substantially trapezoidal stepwise vertical cross section, and is formed so that the diameter of the rear portion gradually decreases. The thin-walled portion 13b has a substantially trapezoidal stepwise vertical cross-section because when the thin-walled portion 13b contracts, liquids and sediments are sandwiched between adjacent wall surfaces through the corners of the stepped thin-walled portion. This is to prevent it from getting caught. In this embodiment, the movable portion 13 is integrally formed with the rear shaft 8 having the liquid storage chamber 9. This is because the thin-walled portion 13b has a substantially stepped shape, and therefore can be molded by an injection molding method. By integrally molding, the cost can be kept low. Of course, the movable portion 13 may be molded and attached separately from the rear shaft 8. Incidentally, the thin portion 1
The thickness of 3b is 0.1 to 0.6 with respect to the wall thickness of the rear shaft 8:
1 is preferred. Further, in the substantially stepped shape, the wall thickness of the portion substantially parallel to the axial direction is preferably thicker than the wall thickness of the portion vertical to the axial direction.

A tail plug 14 is inserted and fixed in the rear end opening of the rear shaft 8. The tail plug 14 is a bottomed cylindrical pressing crown 1.
4a and a collar-shaped tubular crown 14b are integrally formed via a separable thin film portion 14c. The tail plug 14 is inserted and fixed to the rear shaft 8 so that the outer wall of the tail cap 14b and the inner wall of the rear shaft 8 are in close contact with each other, and the rear end collar portion of the tail cap 14b is in contact with the rear end face of the rear shaft 8. Has been done.

Reference numeral 15 is a cap. The cap 15 is capped on the front shaft 2 to protect the applicator 1 when not in use, but when used, the opening is inserted into the gap between the pressing crown 14a and the tail crown 14b to be used as an auxiliary body for knocking. To do. Of course, the cap 15 may not be used as an auxiliary body for knocking, but the pressing crown 14a, which is a knocking body, may be pressed. However, when the cap 15 is used as an auxiliary body for knocking, the cap 15 does not function as an applicator when used. Since they are the same, the possibility of loss is reduced, which is preferable.

Next, the usage method will be described. When a pressing force is applied to the cap 15 in the state shown in FIG. 1, the thin film portion 1 in which the pressing crown 14a of the tail plug 14 and the tail crown 14b are integrated with each other.
4c is broken, and the tail plug 14 is separated into a pressing crown 14a and a tail crown 14b.

When the cap 15 is further pressed, the thin portion 1
3b contracts and the bottomed cylindrical body 13a advances, and the bottom surface of the bottomed cylindrical portion 13a resists the urging force of the elastic body 10,
The valve opening body 12 and the valve body 11 are advanced to separate the valve portion 11a from the seat portion 6a and open the valve.

When the valve is opened, the liquid in the liquid storage chamber 9 passes through the protruding cylindrical portion 6 and is discharged into the liquid occlusion body 5,
Furthermore, it is supplied to the coating body 1 via the liquid occlusion body 5 and coating is possible. At this time, since the rib 4 is formed on the inner wall of the front shaft through hole into which the applicator 1 is inserted, the exchange of the liquid and the air is surely performed.

In the applicator of the present invention, since the applicator body 1 is securely held and fixed by the elastic portion 4b of the rib 4, even if an external force such as a drop is applied to the applicator, the applicator tip 1 is the front shaft 2 There is no problem of leaving.

In this embodiment, as the applicator,
Although the knock type has been described as the type in which the liquid is directly contained in the barrel, the same action and effect can be obtained even with the filling type applicator.

[0022]

In the applicator according to the present invention, since the inside and the outside of the applicator are communicated with each other, the liquid and the air can be reliably exchanged, and the application mark is not blurred. Furthermore,
The applicator is securely fixed to the barrel, and the applicator can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment according to the present invention.

FIG. 2 is a longitudinal sectional view of an essential part of an embodiment according to the present invention.

FIG. 3 is a longitudinal cross-sectional view of the main part with the coating body omitted from FIG.

FIG. 4 is a cross-sectional view taken along the line II of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Application body 2 Front shaft 3 Tip through hole 4 Rib 4a Step part 4b Elastic part 5 Liquid occlusion body 6 Projection cylinder part 6a Seat part 7 Lid body 8 Rear shaft 9 Liquid accommodating chamber 10 Repulsion member 11 Valve body 11a Valve part 11b Rear cylinder part 12 Valve open body 13 Movable part 13a Bottomed cylindrical part 13b Thin wall part 14 Tail plug 14a Pressing crown 14b Tail crown 14c Thin film part 15 Cap

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B43K 8/02 B43L 19/00 G B65D 83/00

Claims (1)

[Claims] 1. An applicator in which an applicator is inserted into a tip through hole of a barrel containing a liquid therein, wherein a plurality of ribs are formed in the axial longitudinal direction on the inner wall of the through hole of the barrel. ,
An applicator characterized in that an elastic part is continuously provided at a position inward of the tip of the shaft cylinder of these ribs so that the rear part is inclined toward the axis, and the applicator body is inserted through the elastic part. .