JPH11139078A - Cap for coating implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a cap having a structure wherein an inner cap is inserted into an outer cap, so that a problem with manufacture be solved and a sufficient gap be ensured between a flange part and a straight part, and thereby to provide a cap for a coating implement having a high safety, regarding the cap which can secure a respiratory tract even when a child swallows it. SOLUTION: This cap has a structure wherein an inner cap 3 is inserted into an outer cap 2, and ribs 8 extending in the longitudinal direction and a flange part 6 are provided on the outer cap 2 side. The ribs 8 of the outer cap 2 and the outer peripheral part of the inner cap 3 engage with each other and there is a space between the open end of the inner cap 3 and the flange part 6 of the outer cap 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap for an applicator, and more particularly, to a cap attached to a tip of a ballpoint pen, a felt pen, a line marker, a glue, a nail polish, or the like.

[0002]

2. Description of the Related Art Conventionally, an applicator such as a ball-point pen or a felt-tip pen has a cap attached to the tip of an applicator main body for the purpose of preventing drying of a pen tip or the like and preventing the ink from being inadvertently stained. Is detachably attached. Such caps are roughly classified into those with clips and those without clips.

[0003] When such an applicator is used by a child or an infant, there is a risk that the cap may be accidentally put into the mouth and swallowed. If swallowed, the one without the clip has a risk of suffocation due to difficulty in air circulation to the trachea of children and the like. Therefore, in the case of a cap without a clip, it is necessary to take measures to ensure air permeability.

[0004] For this purpose, a configuration disclosed in Japanese Utility Model Registration No. 2542155 is known as a typical example of a cap for an applicator that ensures air permeability. FIG. 8 is a front sectional view and a plan view of a conventional applicator cap. Prior art coating tool cap 100
The outer cap 101 and the inner cap 102 are separately formed, and these are engaged and assembled in a later step. That is, the outer cap 101 is a cylindrical member, and the inside thereof is provided with the rib 103 extending in the longitudinal direction. A plurality of ribs 103 are provided radially, and all extend from one end of the outer cap 101 to the vicinity of the intermediate portion. On the other hand, the inner cap 102 has one of the closed walls 10.
6, and the other has an open cylindrical shape. The open side has a flange 107 whose diameter is increased in a funnel shape. An opening 108 is formed at the boundary between the enlarged diameter portion and the straight portion.
Is provided.

The prior art cap 100 is constructed such that the inner cap 1 starts from the end of the outer cap 101 where the rib 103 does not exist.
02, the rib 103 of the outer cap 101 and the outer peripheral portion of the inner cap 102 are engaged with each other.
At the center of the outer cap.

[0006]

In the prior art applicator cap 100, air permeability is ensured in the longitudinal direction through the opening 108 of the inner cap 102 and the gap between the inner cap 102 and the outer cap 101. . If the applicator cap 100 is swallowed, the air entering the inner cap 102 leaks from the opening 108 between the inner cap 102 and the outer cap 101, and the air between the inner cap 102 and the outer cap 101 is moved along the rib 103. It flows through the space between the two and is discharged from the end of the outer cap 101. Here, in the series of air circulation paths described above, the portion having the narrowest flow path is the opening 108 of the inner cap 102. Therefore, if the cap 100 is swallowed, whether or not the life can be maintained until the medical institution arrives depends on the size of the opening 108. Therefore, it is desirable that the opening 108 be designed large. However, on the other hand, the cap 100 for the applicator of the related art has the inner cap 102 integrally provided with the flange 107, and the inner cap 102 is inserted into the outer cap 101 by pressing the flange 107 side. Since it is necessary, when the opening 108 becomes large, the strength of the connecting portion between the flange portion 107 and the straight portion decreases, and the portion is deformed when the inner cap 102 is inserted. Therefore,
In the prior art applicator cap 100, the area of the opening 108 is restricted in manufacturing, and a sufficient opening area cannot be secured. Therefore, if the cap 100 is swallowed, there is a concern that a sufficient airway cannot be secured.

The present invention has been made in view of the above-mentioned problems of the prior art, and has solved a problem in manufacturing to secure a sufficient gap between a flange portion and a straight portion. The task is to provide.

[0008]

The present invention for solving the above-mentioned problems has an outer cap and an inner cap, and has a flange penetrating the center on the inner surface of the outer cap, and a longitudinally extending flange. An extending rib is provided, and one of the inner caps is opened, and the inner cap is inserted into the outer cap so that the rib of the outer cap and the outer peripheral portion of the inner cap are engaged, and the inner cap has an open end. An applicator cap characterized in that there is a gap between the outer cap and the flange.
Note that the applicator is a general term for a tool that oozes a liquid such as ink or glue from a pen tip, and is a concept including at least an object for writing a character, an object for writing a line, and an object for coloring a product.

In the cap for an applicator of the present invention, the flange portion is provided on the outer cap side, and there is no need to provide a flange on the inner cap. In the cap for an applicator of the present invention, a gap is provided between the open end of the inner cap and the rib of the outer cap, and the flow of air is ensured through the gap. The cap for an applicator of the present invention inserts the inner cap inside the outer cap as in the prior art.However, in the present invention, the air gap is formed between the open end of the inner cap and the rib of the outer cap. And it is not necessary to provide an opening in the inner cap. Therefore, in the present invention, the deformation at the time of inserting the inner cap is small, and the manufacture is easy.

A second aspect of the present invention is an improvement of the above invention.
The invention according to claim 1, wherein the locking portion is provided on the rib, and a part of the inner cap is in contact with the locking portion. For example, a step or a projection can be considered as the configuration of the locking portion.

In the cap for an applicator of the present invention, the rib is provided with a locking portion such as a step, and a part of the inner cap comes into contact with the step. Therefore, positioning when inserting the inner cap is easy.

Further, according to the present invention, a projection is provided on an outer peripheral portion of the inner cap, and the projection presses the rib and cuts into the rib. It is a cap for application tools of a statement.

[0013] In the cap for an applicator of the present invention, since the projection is provided around the inner cap, the inner cap is hard to come off.

Preferably, the projection has a non-return shape.

[0015]

Embodiments of the present invention will be described below. FIG. 1 is a front sectional view and a plan view of an applicator cap according to an embodiment of the present invention. FIG. 2 is an explanatory diagram illustrating an assembling procedure of the applicator cap of FIG. 1.
FIG. 3 is an exploded perspective view of the applicator cap of FIG.
FIG. 4 is a front sectional view and a plan view of an applicator cap according to another embodiment of the present invention. FIG. 5 is an explanatory diagram illustrating an assembling procedure of the applicator cap of FIG. 4. FIG.
FIG. 4 is a front cross-sectional view and a plan view of an applicator cap according to another embodiment of the present invention. FIG. 7 is a cross-sectional view of a molding die showing a method of manufacturing the inner cap employed in the embodiment of FIG.

1 to 3, reference numeral 1 denotes a cap for an applicator of the present invention. The cap 1 is formed by injection molding using, for example, a thermoplastic resin such as polypropylene or polyacetal, and is a combination of a cylindrical outer cap 2 and an inner cap 3.

That is, the outer cap 2 has a tubular shape, and has a flange portion 6 provided inside as shown in FIGS.
The flange portion 6 has a funnel shape, and an opening is provided at a central portion. The flange 6 is provided to guide the tip of the pen to the center when inserting a pen (not shown). In addition, the inner surface of the outer cap 2 and the flange 6
1 and 2, ie, the upper part of FIGS.
Is provided. In the present embodiment, eight ribs 8 are provided, and all of the ribs 8 extend from the vicinity of the top of the outer cap 2 to a portion reaching the flange 6. The ribs 6 are plate-shaped and arranged radially, and the center of the inscribed circle at each end coincides with the center of the outer cap 2.

On the other hand, the inner cap 3 is a cylindrical member having one end closed and the other end open. An annular projection 1 is provided on the outer peripheral portion and near the closed end.
1 is provided. In the present embodiment, the cross-sectional shape of the protrusion 11 is circular. Also, inside the inner cap 3,
The innermost portion is provided with a housing portion 12 into which a pen tip (not shown) of the applicator body is detachably fitted. Further, at a portion near the open end of the inner cap 3, an annular projection 1 is provided.
3 are formed. The protrusion 13 is formed to maintain airtightness with a pen body (not shown).

In the applicator cap 1 of this embodiment, the inner cap 3 is press-fitted from the top side of the outer cap 2, and the tips of the ribs 8 contact the outer peripheral portion of the inner cap 3, and the two are engaged. I have. The annular protrusion 11 of the inner cap 3 deforms a part of the rib 8 and bites into the rib 8. In the cap 1 for an applicator of the present embodiment, the inner cap 3
And the flange 6 does not come into contact with the open end of the
0 is provided. Therefore, in the applicator cap 1 of the present embodiment, the lower side (A side) and the upper side (B side) in FIG.
The space 20 communicates with a space formed between the inner cap 3 and the outer cap 2.

That is, air entering from below the cap 1 enters the flange 6 and escapes from the gap 20 to the outside of the inner cap 3. Then, it flows in the space between the inner cap 3 and the outer cap 2 along the rib 8 and is discharged upward (B side) from the end of the outer cap 2. Therefore, even if the cap of the present embodiment is accidentally swallowed, the minimum airway is secured. Further, in the cap 1 of the present embodiment, there is no opening on the side surface of the inner cap 3, so that the rigidity of the inner cap 3 in the axial direction is high. Therefore, there is little fear that the inner cap 3 will be deformed when it is inserted. Further, in the present embodiment, the gap 2
The size of 0 can secure a sufficient area without being restricted by manufacturing.

The area of the gap 20 is determined by the insertion depth of the inner cap 3 in the above embodiment. The insertion depth is determined by the position setting of an insertion device (not shown), but the cap itself may be provided with a positioning function. For example, like the applicator cap 40 shown in FIGS. 4 and 5, the rib 41 is provided with a step (locking portion) 43, and the end of the inner cap 3 is brought into contact with the step 43 so that The insertion depth of the cap 3 can also be determined.

In the above-described embodiment, the annular projection is provided on the outer peripheral surface of the inner cap.
The shape and the like are arbitrary. As another example of the shape of the projection, a one-sided shape such as the projection 61 shown in FIG. 6 can be considered. That is, the inner cap 63 of the cap 60 shown in FIG. 6 is provided with a projection 61 having a triangular cross section. The triangular shape of the projection 61 is gentle in the insertion direction, and is closer to the upright state in the removal direction. Therefore, the coating tool cap 60 of the present embodiment is used.
Then, the operation of inserting the inner cap 63 is easy, and the inner cap 63 is hard to come off.

The means for providing the above-mentioned triangular protrusions 61 on the inner cap 63 is optional. For example, as shown in FIG.
Using the parting line 71 of the injection mold 70,
A notch 72 is provided in a part corresponding to the opening side of the inner cap in the parting portion, and the notch 72 is filled with a resin to form the protrusion 63.

[0024]

The applicator cap of the present invention secures the flow of air by the gap between the open end of the inner cap and the rib of the outer cap, and there is no need to provide an opening in the inner cap. Therefore, in the present invention, the deformation at the time of inserting the inner cap is small, and the manufacture is easy. Further, since the size of the gap is not restricted by manufacturing, a sufficient size can be ensured, and there is an effect that the safety is high.

Further, in the cap for an applicator according to the second aspect, the rib is provided with a step, and the end of the inner cap is in contact with the step. Therefore, positioning when inserting the inner cap is easy.

The caps for the applicator according to the third and fourth aspects have the effect that the inner cap is hard to come off.

[Brief description of the drawings]

FIG. 1 is a front sectional view and a plan view of an applicator cap according to an embodiment of the present invention.

FIG. 2 is an explanatory view for explaining an assembling procedure of the applicator cap of FIG. 1;

FIG. 3 is an exploded perspective view of the applicator cap of FIG. 1;

FIG. 4 is a front sectional view and a plan view of an applicator cap according to another embodiment of the present invention.

FIG. 5 is an explanatory view illustrating an assembling procedure of the applicator cap of FIG. 4;

FIG. 6 is a front sectional view and a plan view of an applicator cap according to another embodiment of the present invention.

FIG. 7 is a sectional view of a molding die showing a method of manufacturing the inner cap employed in the embodiment of FIG.

FIG. 8 is a front sectional view and a plan view of a conventional applicator cap.

[Explanation of symbols]

 1, 40, 60 Coating device cap 2 Outer cap 3 Inner cap 6 Flange 8, 41 Rib 43 Step (locking portion) 11, 61 Projection

Claims (4)

[Claims] 1. An outer cap having an outer cap and an inner cap, wherein an inner surface of the outer cap is provided with a flange penetrating the center and a rib extending in a longitudinal direction, and one of the inner caps is opened,
The inner cap is inserted into the outer cap, the rib of the outer cap is engaged with the outer peripheral portion of the inner cap, and there is a gap between the open end of the inner cap and the flange of the outer cap. A cap for an applicator, characterized in that: 2. The cap for an applicator according to claim 1, wherein a locking portion is provided on the rib, and a part of the inner cap contacts the locking portion. 3. The cap for an applicator according to claim 1, wherein a projection is provided on an outer peripheral portion of the inner cap, and the projection presses a rib and cuts into the rib. 4. The applicator cap according to claim 3, wherein the projection has a non-return shape.