JPH028798Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は、万年筆や繊維ペン等に使用される液
体インキを使用した筆記具のキヤツプの改良に関
する。[Detailed Description of the Invention] The present invention relates to an improvement in the cap of a writing instrument using liquid ink, such as a fountain pen or a textile pen.

従来、液体インキを充填したインキタンクを備
えた万年筆や繊維ペン等の筆記具は、不使用時の
ペン先部の乾燥防止のために、キヤツプ内部の気
密を保持して被着されるキヤツプとしなければな
らない。そのために、筆記具において気密状態に
被着したキヤツプを取外す際、キヤツプ内の圧力
はその容積増加により減圧され負圧状態となる。
そのため、インキタンク内のインキがペン先部に
引き出されて、水滴状に凝集したインキがキヤツ
プの軸筒より取外す際の衝撃でキヤツプ内に飛散
して汚染し次第に外部に流出したり、キヤツプを
再び被着する際に軸筒を汚し、その後の使用時に
手指を汚染することがしばしばあつた。 Conventionally, writing instruments such as fountain pens and textile pens that are equipped with ink tanks filled with liquid ink must have caps that are kept airtight inside the cap to prevent the nib from drying out when not in use. Must be. Therefore, when removing the cap that is airtightly attached to the writing instrument, the pressure inside the cap is reduced due to the increase in volume and becomes a negative pressure state.
As a result, the ink in the ink tank is drawn out to the pen tip, and the ink that aggregates in the form of water droplets scatters inside the cap due to the impact when the cap is removed from the barrel, contaminates it, and gradually flows out. When it was reapplied, the barrel was often contaminated, and hands and fingers were often contaminated during subsequent use.

このような従来の欠点を改良したものとして、
実開昭56−3685公報に記載のように、内装キヤツ
プの先端部の内側に透湿度の低いフイルムで変形
可能な袋体を気密状態に設けて調圧室を形成して
なる筆記具用キヤツプの提案がある。しかし、こ
のキヤツプでは内キヤツプの先端部の内側に袋体
を気密状態に設けるため、袋体の取付け箇所の位
置出しやリングにより気密状態に圧接して固定す
ることが難しく、また複雑な治具を使用しなけれ
ばならない欠点がある。 As an improvement on these conventional drawbacks,
As described in Japanese Utility Model Application Publication No. 56-3685, a writing instrument cap is constructed in which a deformable bag made of a film with low moisture permeability is provided in an airtight state inside the tip of an inner cap to form a pressure regulating chamber. I have a suggestion. However, with this cap, the bag is airtightly installed inside the tip of the inner cap, so it is difficult to locate the attachment point of the bag and fix it in an airtight state with a ring, and it also requires complicated jigs. There is a drawback that you have to use .

本考案は、上記キヤツプの欠点を改良したもの
で、複雑な治具を使用せず簡単にキヤツプが組立
られ、所望の効果を得ることができる。すなわ
ち、キヤツプの内部に弾性を有する薄膜状の袋体
を挿入し、弾性を有する口元リングで、キヤツプ
の開口端部に袋体の開口端部を気密状態に固定
し、キヤツプの内部を袋体の内室と外室とに形成
し、外室は外気と連通させた筆記具用キヤツプで
ある。 The present invention improves the above-mentioned drawbacks of the cap, and allows the cap to be easily assembled without using complicated jigs, and the desired effect can be obtained. That is, an elastic thin film bag is inserted into the inside of the cap, the opening end of the bag is airtightly fixed to the open end of the cap using an elastic mouth ring, and the inside of the cap is closed to the bag. The cap is formed into an inner chamber and an outer chamber, with the outer chamber communicating with the outside air.

本考案では、キヤツプを軸筒に取付けると弾性
を付与した口元リングの内側面が軸筒の首部の外
側面に密接して、内室が気密を保持できるので、
インキの蒸発や乾燥固化するのを防止できる。し
かも、キヤツプ内部に弾性を有する薄膜状の袋体
を設けてなる内室が形成されているので、キヤツ
プを軸筒より取外す際は、内室内の圧力が減圧さ
れようとしても袋体が収縮変形して内室内の圧力
は殆ど下がらず、減圧によるインキの引き出し現
象がない。よつてペン先部がインキにより汚染さ
れたり、衝撃によりインキが飛散しキヤツプ内や
軸筒の首部の廻り部分を汚し、使用時に手指を汚
してしまうこともない。また、ボタ落ち性能も向
上されることがわかつた。すなわちペン芯を有す
る筆記具においてキヤツプを取付けた状態で筆記
具に温度変化が生じた場合、例えば寒い室外から
暖かい部屋に移動してきて、しばらくしてから筆
記具を使用した場合、従来のキヤツプを取付けた
筆記具のなかにはボタ落ちが生じるものがあつ
た。しかし本考案のキヤツプを使用した筆記具で
はボタ落ちが生じなかつた。これは従来のキヤツ
プでは、キヤツプ内の空気が暖められて膨張し、
気密状態に保たれたキヤツプ内の空気はペン芯の
空気溝を通つてインキタンク内に侵入するので、
インキはインキタンク内での容積を減少し、減少
した分はペン芯のインキ溝にインキが流れ込む。
こうした状況下で筆記具を使用すると、手の温度
により今度はインキタンク内の空気が膨張しその
容積を増すので、インキは、すでにインキ溝はイ
ンキで満たされているので行き場がなくなりボタ
落ちとしてペン先に流出してくる。本考案のキヤ
ツプでは内室の空気が暖められても、内室は弾性
を有する薄膜状の袋体で形成されており、外室は
外気と連通しており、内室の容積は容易に増すこ
とができるので、上記のような現象が起こらず
に、よつてボタ落ち性能が向上すると考えられ
る。 In this invention, when the cap is attached to the barrel, the inner surface of the elastic mouth ring comes into close contact with the outer surface of the neck of the barrel, and the inner chamber can be kept airtight.
It can prevent ink from evaporating and drying and solidifying. Moreover, since the inner chamber is formed with an elastic thin film-like bag inside the cap, when the cap is removed from the shaft cylinder, even if the pressure inside the inner chamber is reduced, the bag contracts and deforms. As a result, the pressure inside the inner chamber hardly decreases, and there is no phenomenon of ink being drawn out due to reduced pressure. Therefore, the pen tip will not be contaminated with ink, and the ink will not be scattered due to impact, staining the inside of the cap or around the neck of the barrel, and will not stain your fingers during use. It was also found that the drop-off performance was improved. In other words, if a temperature change occurs in a writing instrument with a pen refill with the cap attached, for example, if you move from a cold outside to a warm room and use the writing instrument after a while, the writing instrument with a conventional cap may change. There were some that caused some lint to fall off. However, writing instruments using the cap of the present invention did not cause any drop-off. This is because in conventional caps, the air inside the cap gets warmed and expands.
The air inside the cap, which is kept airtight, enters the ink tank through the air groove in the pen core.
The volume of ink in the ink tank is reduced, and the reduced volume flows into the ink groove of the pen core.
When you use a writing instrument under these conditions, the air in the ink tank expands due to the temperature of your hands, increasing its volume.The ink has nowhere to go since the ink groove is already filled with ink, and the pen splatters as scum. It flows out first. In the cap of this invention, even if the air in the inner chamber is warmed, the inner chamber is formed of an elastic thin film-like bag, and the outer chamber is in communication with the outside air, so the volume of the inner chamber can be easily increased. Therefore, it is thought that the above-mentioned phenomenon does not occur and the lint removal performance is improved.

本考案の実施例を図面において説明する。 Embodiments of the invention are explained in the drawings.

第１図の実施例では、キヤツプ１の先端部２に
は頭冠３によりクリツプ４が固定されている。キ
ヤツプ１の内部には、開口端部５の外径がキヤツ
プ１の開口端部６の内径に等しく、先端部７へ行
くに従い小径になり全長がキヤツプ１の全長より
短長で、軸筒８の首部９を内包する弾性を有する
薄膜状の袋体１０が、先端部７をキヤツプ１の先
端部２方向へ位置して挿入してある。開口端部５
は、キヤツプ１の開口端部６の内側面に当接し、
外径がキヤツプ１の内径よりやや小径な部分１１
とキヤツプ１の外径とほぼ等径の部分１２とから
なり内径は軸筒８の首部９の外径よりやや小径な
る弾性を有する口元リング１３の小径部分１１
を、袋体１０の開口端部５の内側面に圧入し、キ
ヤツプ１と袋体１０と口元リング１３をそれぞれ
気密状態に圧接して固定してある。キヤツプ１の
内部は袋体１０の内部と外部とでそれぞれ分か
れ、内室１４と外室１５としてある。外室１５に
は、クリツプ４の裏側に隠れる位置の側壁に、外
気と連通させるべく連通孔１６が設けてある。 In the embodiment shown in FIG. 1, a clip 4 is fixed to the distal end 2 of the cap 1 by a crown 3. Inside the cap 1, there is a shaft cylinder 8 whose outer diameter at the open end 5 is equal to the inner diameter of the open end 6 of the cap 1; An elastic thin film-like bag 10 enclosing the neck 9 of the cap 1 is inserted with the tip 7 of the cap 1 positioned toward the tip 2 of the cap 1. Opening end 5
is in contact with the inner surface of the open end 6 of the cap 1,
Portion 11 whose outer diameter is slightly smaller than the inner diameter of cap 1
and a small-diameter portion 11 of a mouth ring 13 having elasticity and a portion 12 having approximately the same diameter as the outside diameter of the cap 1, the inside diameter of which is slightly smaller than the outside diameter of the neck portion 9 of the shaft tube 8.
is press-fitted into the inner surface of the open end 5 of the bag body 10, and the cap 1, the bag body 10, and the mouth ring 13 are each pressed and fixed in an airtight state. The inside of the cap 1 is divided into an inside and an outside of the bag body 10, which are an inner chamber 14 and an outer chamber 15. A communication hole 16 is provided in the side wall of the outer chamber 15 at a position hidden behind the clip 4 to communicate with the outside air.

第２図の実施例は、袋体１０′と口元リング１
３′を除いて前記実施例と同様に構成されている。
開口端部５′の外径がキヤツプ１の開口端部６の
内径よりやや小径で他の形状が第１図と同様な袋
体１０′の開口端部５′に、外径がキヤツプ１の内
径より小径で袋体１０′の開口端部５′の内径にほ
ぼ等径な部分１１′ａとキヤツプ１の内径とほぼ
等径な部分１１′ｂとキヤツプ１の外径とほぼ等
径な部分１２′とからなり、内径は軸筒８の首部
９の外径よりやや小径なる弾性を有する口元リン
グ１３′の部分１１′ａの外側面に袋体１０′の開
口端部５′の内側面を圧接して固定し、キヤツプ
１の内部に上記袋体１０′を挿入してある。キヤ
ツプ１の開口端部６の内側面には、口元リング１
３′の部分１１′ｂの外側面を圧接して固定してあ
る。 The embodiment shown in FIG. 2 includes a bag body 10' and a mouth ring 1.
The structure is the same as that of the previous embodiment except for 3'.
The open end 5' of a bag body 10' whose outer diameter is slightly smaller than the inner diameter of the open end 6 of the cap 1 and whose shape is otherwise similar to that of FIG. A portion 11'a having a diameter smaller than the inner diameter and approximately equal to the inner diameter of the open end 5' of the bag body 10', a portion 11'b having approximately the same diameter as the inner diameter of the cap 1, and a portion 11'b having approximately the same diameter as the outer diameter of the cap 1. The inner diameter of the opening end 5' of the bag body 10' is on the outer surface of the elastic part 11'a of the spout ring 13', which has an inner diameter slightly smaller than the outer diameter of the neck 9 of the barrel 8. The bag body 10' is inserted into the inside of the cap 1 with its sides pressed and fixed. A mouth ring 1 is attached to the inner surface of the open end 6 of the cap 1.
The outer surface of the portion 11'b of 3' is pressed and fixed.

キヤツプ１を軸筒８に取付けると、口元リング
１３，１３′の内側面がその弾性により首部９の
外側面に密接し、内室１４を気密状態に保つ。キ
ヤツプ１を軸筒８より取外すときは、袋体１０，
１０′が変形するので、内室１４の容積が変化す
ることにより内室１４内の圧力は殆ど負圧状態と
なることはない。 When the cap 1 is attached to the barrel 8, the inner surfaces of the mouth rings 13, 13' come into close contact with the outer surface of the neck 9 due to their elasticity, keeping the inner chamber 14 airtight. When removing the cap 1 from the shaft tube 8, remove the bag body 10,
Since 10' is deformed, the volume of the inner chamber 14 changes, so that the pressure inside the inner chamber 14 hardly becomes a negative pressure state.

本考案の実施例では外室１５に設けられた連通
孔１６は、美観上、上記のような箇所に設けた
が、外室１５の側壁ならどこでもよく、また、外
室１５が外気と連通しておればあえて連通孔１６
を設けなくてもよい。 In the embodiment of the present invention, the communication hole 16 provided in the outer chamber 15 is provided at the above-mentioned location for aesthetic reasons, but it may be provided anywhere on the side wall of the outer chamber 15. If it is, then open the communication hole 16.
It is not necessary to provide

本考案は以上のように、キヤツプ内に弾性を有
する薄膜状の袋体を設け、弾性を有する口元リン
グでキヤツプの開口端部にキヤツプ、袋体及び口
元リングをそれぞれ気密状態に圧接して固定する
という簡単な構造で、かつ簡単に組立られて、キ
ヤツプを軸筒より取外す際のインキ飛び出しや、
それによる首部廻りや手指の汚れ及びボタ落ち性
能の向上等の効果を得ることができ、使用上及び
生産上種々のすぐれた利点がある。 As described above, the present invention provides an elastic thin film-like bag inside the cap, and fixes the cap, the bag, and the mouth ring in an airtight state by pressing the cap, the bag, and the mouth ring to the open end of the cap using an elastic mouth ring. It has a simple structure that is easy to assemble, and it prevents ink from flying out when removing the cap from the barrel.
As a result, it is possible to obtain effects such as improving the ability to remove stains around the neck and fingers, and to remove lint, and has various excellent advantages in terms of use and production.

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

第１図は本考案の一実施例のキヤツプの縦断面
図、第２図は他の実施例のキヤツプの一部拡大断
面図である。 １……キヤツプ、５，５′……袋体の開口端部、
６……キヤツプの開口端部、１０，１０′……袋
体、１３，１３′……口元リング、１４……内室、
１５……外室。 FIG. 1 is a longitudinal cross-sectional view of a cap according to one embodiment of the present invention, and FIG. 2 is a partially enlarged cross-sectional view of a cap according to another embodiment. 1... Cap, 5, 5'... Open end of bag,
6... Opening end of the cap, 10, 10'... Bag body, 13, 13'... Mouth ring, 14... Inner chamber,
15... Outer room.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] キヤツプ１の内部に弾性を有する薄膜状の袋体
１０を挿入し、弾性を有する口元リング１３で、
キヤツプ１の開口端部６に袋体１０の開口端部５
を気密状態に固定し、キヤツプ１の内部を袋体１
０の内室１４と外室１５とに形成し、外室１５は
外気と連通させた筆記具用キヤツプ。 An elastic thin-film bag 10 is inserted into the cap 1, and an elastic mouth ring 13 is used.
The open end 5 of the bag body 10 is connected to the open end 6 of the cap 1.
is fixed in an airtight state, and the inside of cap 1 is sealed with bag body 1.
The cap for a writing instrument is formed into an inner chamber 14 and an outer chamber 15, and the outer chamber 15 is communicated with the outside air.