JPH11277975A - Tail plug for writing utensil or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable air to pass through to avoid risks such as suffocation, even when a baby happens to swallow a tail plug by mistake and have it caught in the throat. SOLUTION: In the tail plug 5 which is fitted into the rear end of a barrel 2 filled with ink, in order to prevent the ink from vaporizing, on a writing utensil having a writing tip part such as a marking pen or a ball-point pen fitted on the tip of the utensil 2, a collar part 8 coming into contact with the rear end of the barrel 2, a shaft part 6 fitted into the inner face of the barrel 2 forward of the collar part 8 and an inner hole 7 with a blocked rear end are formed on the shaft part 6. In addition, a lateral hole 6a passing through the outer periphery of the shaft part 6 is formed at a specified spot in the inner hole 7, and an annular protruding part 6a which comes into watertight contact with the inner face of the barrel 2, is formed on the outer periphery of the shaft part 6. Further, a hole part 8a for causing the rear end face of the tail plug 5 to communicate with a contact face with the rear end of the barrel 2 is formed at a specified spot in the collar part 8 of the tail plug 5.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、インクの蒸発を防止す
るために軸筒の後端に嵌着されるサインペン、マ−カ
−、ボールペン等の尾栓の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a tail plug such as a sign pen, a marker, a ball-point pen, etc., which is fitted to the rear end of a barrel to prevent evaporation of ink.

【０００２】[0002]

【従来の技術】従来のサインペン、マ−カ−、ボールペ
ン等に使用される尾栓はインクの蒸発を抑止する特性に
優れた樹脂成形品等により形成され、インクを充填した
軸の後端孔に密嵌して取付けられている。元来、尾栓は
軸筒に対して強固に固定されるものであるが故意又は不
用意に外してしまう可能性は存在する。従って、万一軸
筒から尾栓が外れた場合、従来の尾栓は後端部が閉塞状
態にあるため、極めて稀なことではあるが幼児が誤って
飲み込み喉に詰まらせて窒息してしまう等の事故が起こ
りうる。ところで、幼児が誤って飲み込んでしまい、喉
に詰まらせても空気の疎通を可能として窒息等の危機を
回避せんとする筆記具等のキャップが様々な手段で提案
されている。2. Description of the Related Art A tail plug used in a conventional felt-tip pen, marker, ball-point pen and the like is formed of a resin molded product or the like having excellent characteristics for suppressing evaporation of ink, and a rear end hole of a shaft filled with ink. It is mounted closely. Originally, the tail plug is firmly fixed to the barrel, but there is a possibility that it will be removed intentionally or carelessly. Therefore, in the unlikely event that the tail plug is removed from the barrel, the rear end of the conventional tail plug is in a closed state. And other accidents can occur. By the way, caps such as writing implements have been proposed by various means, which allow air to pass through even if the infant gets swallowed by mistake and clogs his throat, thereby avoiding the danger of choking or the like.

【０００３】[0003]

【発明が解決しようとする課題】従来のサインペン、マ
−カ−、ボールペン等に使用されている尾栓は挿入側を
除いて内孔部は閉塞状態にあるため、寸法及び形状によ
っては極めて稀なことではあるが、幼児が口にくわえて
いる内に尾詮が軸より抜けて飲み込んでしまい喉に詰ま
らせて窒息してしまう等の事故が起こりうる。本発明の
目的は、掛かる状況下において仮に幼児が誤って尾栓を
飲み込んでしまい喉に詰まらせても空気の疎通を可能と
し窒息等の危機を回避せんとするものである。A tail plug used in a conventional felt-tip pen, marker, ball-point pen and the like has an inner hole closed except for an insertion side, and is extremely rare depending on the size and shape. However, while the infant is holding his mouth, an accident can occur, such as the tail snoop coming off the shaft and swallowing, clogging his throat and choking. An object of the present invention is to prevent the danger of suffocation or the like even if an infant accidentally swallows a tail plug in a hanging situation and clogs his throat.

【０００４】[0004]

【課題を解決するための手段】上記課題を達成するため
に本発明の筆記具等の尾栓は、軸筒の後端に当接する鍔
部とその鍔部の前方に軸筒内面に嵌着する軸部とその軸
部に後端閉塞状の内孔が形成されて、内孔の所用箇所に
軸部外周に貫通する横孔が形成されると共に横孔後方の
軸部外周に軸筒内面に液密状に密接する環状突部が形成
され、更に尾栓の鍔部所用箇所にその後端面と軸筒後端
との当接面を連通する孔部が形成されてなり、万一尾栓
が軸筒後端から抜けて飲み込まれた時に、尾栓の内孔、
横孔、鍔部に設けた孔部に抜ける空気流通路が形成され
て窒息の危機が防止可能となる。In order to achieve the above object, a tail plug such as a writing instrument according to the present invention is fitted to a flange abutting a rear end of a barrel and to an inner surface of the barrel in front of the flange. A shaft portion and a rear end closed inner hole are formed in the shaft portion, a lateral hole penetrating the outer periphery of the shaft portion is formed at the required location of the inner hole, and a shaft cylinder inner surface is formed on the outer periphery of the shaft portion behind the lateral hole. An annular protrusion that is in liquid-tight contact is formed, and a hole that connects the contact surface between the rear end surface and the rear end of the barrel is formed at the location of the tail portion of the tail plug. When swallowed through the rear end of the barrel, the inner hole of the tail plug,
An air flow passage is formed through the lateral hole and the hole provided in the flange, so that the risk of suffocation can be prevented.

【０００５】[0005]

【実施例】先ず、図１は従来の水性ボールペン等筆記具
を示しており、インクを充填した軸筒２の後端孔には後
端を閉塞した尾栓３が密嵌されている。又、サインペ
ン、マーカー等の筆記具も同様に構成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, FIG. 1 shows a conventional writing instrument such as a water-based ball-point pen, and a tail plug 3 whose rear end is closed is closely fitted to a rear end hole of a shaft cylinder 2 filled with ink. Writing instruments such as felt-tip pens and markers are similarly configured.

【０００６】図２及び図３は本発明の実施例を示してい
る。図に示すように、尾栓５は軸筒２の後端に当接する
鍔部８とその鍔部８の前方に軸筒内面に嵌着する軸部６
とその軸部６に後端閉塞状の内孔７が形成されてなる。
又、軸部６前端の所用箇所に切欠６ｃが形成されて中綿
にインクを内蔵させたインク充填部４の後端が略当接し
ている。FIG. 2 and FIG. 3 show an embodiment of the present invention. As shown in the figure, a tail plug 5 is provided with a flange 8 abutting on the rear end of the barrel 2 and a shaft 6 fitted on the inner surface of the barrel in front of the flange 8.
And a shaft hole 6 formed with a closed inner hole 7 at the rear end.
A notch 6c is formed at the required position at the front end of the shaft portion 6, and the rear end of the ink filling portion 4 in which the ink is built in the batting is substantially in contact with the batting.

【０００７】又、内孔７の所用箇所に軸部外周に貫通す
る横孔６ｄが形成されると共に、横孔６ｄ後方の軸部外
周に軸筒内面に液密状に密接する環状突部６ａが形成さ
れ、又、横孔６ｄ前方の軸部外周に軸筒内面に固定する
ように係合する突部６ｂが形成されている。尚、突部６
ｂは軸筒内面に液密状に密接するように設けられても部
分的に形成されて軸筒内面に固定のみで係合するよう設
けられてもよい。A lateral hole 6d penetrating the outer periphery of the shaft portion is formed at the required position of the inner hole 7, and an annular protrusion 6a is formed on the outer periphery of the shaft portion behind the lateral hole 6d in liquid-tight contact with the inner surface of the barrel. A protrusion 6b is formed on the outer periphery of the shaft in front of the lateral hole 6d so as to be fixed to the inner surface of the shaft cylinder. The protrusion 6
b may be provided so as to be in liquid-tight contact with the inner surface of the barrel, or may be formed partially so as to be fixedly engaged with the inner surface of the barrel.

【０００８】又、尾栓５の鍔部８の所用箇所にその後端
面と軸筒後端との当接面を連通する孔部８ａが形成され
ている。Further, a hole 8a is formed at the required location of the flange 8 of the tail plug 5 to communicate the contact surface between the rear end surface and the rear end of the barrel.

【０００９】[0009]

【作用】本発明の構成は以上のとうりであり、図２に示
すように尾栓５が軸筒２の後端に嵌着した状態では、環
状突部６ａが軸筒内面に液密状に密接するのでインク充
填部４と外部との空気流通が遮断されてインクの蒸発は
防止される。又、尾栓５が軸筒２から外れて万一飲み込
まれた場合には、図４に示すように尾栓５の外周部が包
み込まれた状態となるが、空間部１０が形成されるので
矢印に示す方向に空気流通が可能となる。The structure of the present invention is as described above. When the tail plug 5 is fitted to the rear end of the barrel 2 as shown in FIG. 2, the annular projection 6a is liquid-tight on the inner surface of the barrel. As a result, the air flow between the ink filling section 4 and the outside is shut off, and the evaporation of the ink is prevented. If the tail plug 5 comes off the barrel 2 and is swallowed, the outer periphery of the tail plug 5 is wrapped as shown in FIG. 4, but the space 10 is formed. Air circulation is enabled in the direction indicated by the arrow.

【００１０】[0010]

【発明の効果】本発明の構成及び作用は以上の通りであ
り、尾栓は本来のインクの蒸発を抑止する機能を有し、
且つ、仮に幼児が軸筒を口にくわえ尾栓が抜けて誤って
飲み込んでしまい喉に詰まらせても、尾栓の先端より後
端に抜ける空気流通が可能となり窒息等の危機を回避す
ることができる。The structure and operation of the present invention are as described above, and the tail plug has a function of suppressing the evaporation of the original ink.
Also, even if the infant holds the barrel in the mouth and the tail plug comes off and the swallow is accidentally swallowed and clogs his throat, air can flow through the tail plug from the tip to the rear end to avoid the danger of choking. Can be.

【図面の簡単な説明】[Brief description of the drawings]

【図１】図１は従来の水性ボールペン等筆記具の半断面
図を示している。FIG. 1 is a half sectional view of a conventional writing instrument such as a water-based ballpoint pen.

【図２】本発明の実施例を示す要部断面図である。FIG. 2 is a sectional view of a main part showing an embodiment of the present invention.

【図３】図２のＡ−Ａ断面図である。FIG. 3 is a sectional view taken along line AA of FIG. 2;

【図４】尾栓を飲み込んだ状態での空気流通を示す図で
ある。FIG. 4 is a view showing air circulation in a state where a tail plug is swallowed.

【符号の説明】 １ キャップ ２ 軸筒 ３ 尾栓 ４ インク充填部 ５ 尾栓 ６ 軸部 ６ａ 環状突部 ６ｂ 突部 ６ｃ 切欠 ６ｄ 横孔 ７ 内孔 ８ 鍔部 ８ａ 孔部 ８ｂ リブ ９ 壁部 １０ 空間部[Description of Signs] 1 Cap 2 Shaft 3 Tail 4 Ink Filler 5 Tail 6 Shaft 6a Annular Projection 6b Projection 6c Notch 6d Side Hole 7 Inner Hole 8 Flange 8a Hole 8b Rib 9 Wall 10 Space

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 軸筒の先端にサインペン、マーカー、ボ
ールペン等の筆記先端部を有した筆記体で、インクを充
填した軸筒の後端にインクの蒸発を防止するために嵌着
される尾栓に於いて、当該尾栓は軸筒の後端に当接する
鍔部とその鍔部の前方に軸筒内面に嵌着する軸部とその
軸部に後端閉塞状の内孔が形成されて、内孔の所用箇所
に軸部外周に貫通する横孔が形成されると共に横孔後方
の軸部外周に軸筒内面に液密状に密接する環状突部が形
成され、更に上記尾栓の鍔部所用箇所にその後端面と軸
筒後端との当接面を連通する孔部が形成されてなること
を特徴とする筆記具等の尾栓。1. A writing body having a writing tip such as a felt-tip pen, a marker, a ball-point pen at the tip of a barrel, and a tail fitted to a rear end of the barrel filled with ink to prevent evaporation of ink. In the plug, the tail plug has a flange abutting on the rear end of the barrel, a shaft fitted on the inner surface of the barrel in front of the flange, and a rear end closed inner hole formed in the shaft. A lateral hole penetrating the outer periphery of the shaft portion is formed at the required location of the inner hole, and an annular protrusion is formed on the outer periphery of the shaft portion behind the lateral hole so as to be in liquid-tight contact with the inner surface of the barrel. A tail plug for a writing instrument or the like, characterized in that a hole communicating with the contact surface between the rear end surface and the rear end of the shaft cylinder is formed at the location of the flange portion.