JPH10272888A - Cap for writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a serious accident result by providing a vent hole passing through a cap in a direction perpendicular to a lengthwise direction of the cap for writing, and communicating the hole with a vent passage provided in the lengthwise direction, thereby ensuring a vent passage irrespective of a direction of the cap clogged in a respiratory tract even if the cap is swallowed with a simple structure. SOLUTION: A double structure of an inner cap 2 with a bottom and a cylindrical outer cap 3 released at both ends is provided. The cap 2 is formed with the bottom at a front side, and fixed to an inner wall end side of the cap 3 with four ribs 4. A tip of a writing instrument such as a ballpoint pen is engaged with the cap 2, a barrel of the instrument is engaged with the cap 3, and a cap 1 for the instrument is fixed to the barrel 1 with an engaging protrusion 5 provided on an inner wall of the bottom side of the cap 3. And, a vent hole 6 is provided through the bottom side wall of the cap 3 to communicate a vent passage 7 formed in a space between an inner wall of the cap 3 and an outer wall of the cap 2 with the hole 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing instrument cap that can secure a minimum air passage even if the airway of the throat is blocked by accidental swallowing.

[0002]

2. Description of the Related Art Conventionally, a writing instrument cap used at the tip of a writing instrument to prevent ink from evaporating and to protect a pen tip has a bottom and no air permeability, but is detachable from a writing instrument body. Therefore, when the writing instrument cap is in a state separated from the writing instrument body, an infant or the like may accidentally swallow, clog the airway and cause an accident. And then,
Since the writing instrument cap has a cylindrical shape, the cap was easily swallowed in the longitudinal direction, and the cap was easily clogged in the airway in the same direction.

[0003] Therefore, even if an infant or the like accidentally swallows the writing instrument cap, a ventilation path is secured in the longitudinal direction of the writing instrument cap in order to secure the minimum ventilation path and prevent suffocation. So-called safety caps have been developed.

[0004]

However, the above-mentioned conventional writing instrument cap provided with an air passage in the longitudinal direction of the cap is provided on the assumption that the airway is obstructed in the longitudinal direction when swallowed. Although it is configured to be able to secure a way, in reality, when swallowed, it does not necessarily obstruct the airway in the longitudinal direction, especially like a tail plug of a marking pen or a knock cover of a ballpoint pen, etc. ,
In a small cap whose length in the longitudinal direction is shorter or shorter than the diameter of the cap, the airway may be obstructed in a direction perpendicular or oblique to the longitudinal direction of the cap. The air passage provided in the longitudinal direction does not function as an air passage, and there is a risk that serious results may be caused in some cases.

Accordingly, the present invention has been made to solve the above-mentioned drawbacks of the prior art, and has a simple structure that always secures an air passage regardless of the direction of the cap clogged in the airway, thereby causing accidental swallowing of the cap. In this case, it is possible to prevent a serious result from occurring.

[0006]

For this purpose, a plurality of ventilation holes penetrating the writing instrument cap at right angles to the longitudinal direction of the writing instrument cap are provided, and the ventilation holes and the ventilation paths provided in the longitudinal direction are formed. It is something that communicates.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS With the above construction, a ventilation passage is secured in both the vertical and horizontal directions of the cap in implementing the present invention. With a small cap that is likely to obstruct the airway, it is possible to prevent serious consequences in the event of accidental ingestion. Here, the number of ventilation holes may be one as long as it has a sufficient ventilation volume, but by providing a plurality of ventilation holes, a necessary air volume can be secured.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. (1) is a writing instrument cap according to an embodiment of the present invention, which has a double structure of a bottomed inner cap (2) and a cylindrical outer cap (3) open at both ends. The inner cap (2) is fixed to the inner cap distal end side of the outer cap (3) by four ribs (4) with its bottom at the distal end side. The pen tip of a writing instrument such as a ball-point pen fits into the inner cap (2), and the shaft of the writing instrument fits into the outer cap (3), and is provided on the inner wall surface on the base side of the outer cap (3). The writing tool cap (1) is fixed to the shaft of the writing tool by the engagement projection (5). Reference numeral (6) denotes a vent hole, which is provided at three places through the base wall surface of the outer cap (3).

Since the writing instrument cap (1) according to the embodiment of the present invention has the above structure, the ventilation formed by the space between the inner wall of the outer cap (3) and the outer wall of the inner cap (2). Since the passage (7) communicates with the ventilation hole (6) provided through the base side wall surface of the outer cap (3), the vertical direction of the writing instrument cap (1), that is, the outer cap (3). ), The direction perpendicular to the longitudinal direction, as well as between the tip side and the base side, that is, the writing instrument cap (1).
The ventilation path (7) is also secured in the diameter direction of itself. As a result, even in the event of accidental ingestion of the writing instrument cap (1), the writing instrument cap (1) has a multi-directional ventilation path (7). ) Regardless of the airway obstruction, the minimum airway can be secured in the airway of the accident victim.

FIG. 2 is a view showing another embodiment. In place of the vent hole (6) in FIG. 1, the vent hole (6) penetrates the outer cap (3) up to the base end. ') Are provided at three places, and the ventilation holes (6') communicate with the ventilation paths (7) as in the case of FIG. In addition, although one piece may be sufficient to have a sufficient ventilation volume, the air quantity can be secured by using a plurality of pieces.

FIG. 3 is a view showing still another embodiment of the present invention. In the prior art, a circular through hole or the like is provided at the top of the dome-shaped portion (8) at the tip of the outer cap (3). The writing instrument cap (1) is formed by forming a cross-shaped air hole (9) including this air hole in addition to the one in which the ventilation path (7) is secured in the vertical direction of the writing instrument cap (1). The ventilation path (7) can be secured also in the diametrical direction. Note that the structure of the ventilation hole (9) is not limited to the cross shape, but may be any as long as it extends in a plurality of directions from the top of the dome-shaped portion (8).

In the other embodiments shown in FIGS. 2 and 3, as in the embodiment described with reference to FIG. 1, the writing instrument cap (1) has a multi-directional air passage (7). ) Is secured, so that a minimum ventilation path can be secured in the airway of the accident victim regardless of the airway obstruction of the writing instrument cap (1), and the airway obstruction of the accident victim is obstructed. Such dangers can be avoided.

[0013]

As described above, in a so-called writing instrument safety cap having a double structure of an outer cap and an inner cap, by providing a horizontal ventilation hole communicating with a vertical ventilation path of the cap itself. In the event of accidental ingestion of the cap, even if the cap blocks the airway in any direction, the airway can be reliably secured, and the safety of the so-called safety cap can be further improved with a simple structure. It has the excellent effect of being able to
In the case of a small cap, the direction of the cap when closing the airway may not always be vertical, which may further improve the safety.

[Brief description of the drawings]

FIG. 1 is a perspective view of a writing instrument cap according to an embodiment of the present invention.

FIG. 2 is a perspective view of a writing instrument cap according to another embodiment of the present invention.

FIG. 3 is a perspective view of a writing instrument cap according to still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Writing instrument cap 2 Inner cap 3 Outer cap 4 Rib 5 Engagement protrusion 6, 6 'Vent hole 7 Vent path 8 Domed part 9 Vent hole

Claims (1)

[Claims] An air passage in a longitudinal direction of the cap,
A writing instrument cap having a ventilation hole penetrating the cap in a direction perpendicular to the longitudinal direction and communicating the ventilation hole with the longitudinal ventilation path.