JP2834067B2 - Ballpoint pen refill with valve mechanism at tip end - Google Patents

Ballpoint pen refill with valve mechanism at tip end

Info

Publication number
JP2834067B2
JP2834067B2 JP8087513A JP8751396A JP2834067B2 JP 2834067 B2 JP2834067 B2 JP 2834067B2 JP 8087513 A JP8087513 A JP 8087513A JP 8751396 A JP8751396 A JP 8751396A JP 2834067 B2 JP2834067 B2 JP 2834067B2
Authority
JP
Japan
Prior art keywords
ink
tip
ball
hole
ballpoint pen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP8087513A
Other languages
Japanese (ja)
Other versions
JPH09248990A (en
Inventor
敏和 塩原
和彦 佐々木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAIROTSUTO KK
Original Assignee
PAIROTSUTO KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PAIROTSUTO KK filed Critical PAIROTSUTO KK
Priority to JP8087513A priority Critical patent/JP2834067B2/en
Publication of JPH09248990A publication Critical patent/JPH09248990A/en
Application granted granted Critical
Publication of JP2834067B2 publication Critical patent/JP2834067B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Pens And Brushes (AREA)

Description

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

【0001】[0001]

【発明の属する技術分野】本発明は、インキ収容筒にボ
ールペン用インキを収蔵したボールペンレフィルのチッ
プ先端部のインキ乾燥防止や、インキ漏出防止の目的
で、ボールハウス内に収納したボールをチップ先端縁の
かしめ加工により、その一部を先端縁より外方に露出さ
せ且つ、回動自在に抱持して成るボールペンチップ内又
は、チップを嵌着するインキ収容筒の先端孔周辺を含む
ボールペンチップ内に、ボールの後端面と接するボール
押圧部を有する可動部材と、その後端面と接するコイル
スプリングを配設し、ボールをチップ先端かしめ部内壁
に押圧して弁機構とする、チップ先端部に弁機構を設け
たボールペンレフィルに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball-point pen refill in which ink for a ball-point pen is stored in an ink storage cylinder. A ball-point pen tip that includes a portion inside a ball-point pen tip that is rotatably held by exposing a part of the edge part outward from the tip edge by swaging the edge or around the tip end hole of an ink container cylinder into which the tip is fitted. A movable member having a ball pressing portion in contact with the rear end surface of the ball and a coil spring in contact with the rear end surface are disposed therein, and the ball is pressed against the inner wall of the tip end caulking portion to form a valve mechanism. The present invention relates to a ballpoint pen refill provided with a mechanism.

【0002】[0002]

【従来の技術】ボールペン用インキをインキ収容筒に収
蔵し、該インキの後部にインキの消費につれ追従するフ
ォロアーを装填し更に、インキ収容筒の後端に通気手段
を有する尾栓を止着すると共に、インキ収容筒の先端孔
にボールペンチップを嵌着したボールペンレフィルは、
インキ収容筒の内径が大きい部類のボールペンレフィル
として良く知られている。
2. Description of the Related Art Ink for a ball-point pen is stored in an ink container, a follower following the ink is loaded in the rear part of the ink, and a tail plug having a ventilation means is fixed to the rear end of the ink container. At the same time, a ballpoint pen refill with a ballpoint pen tip fitted into the tip hole of the ink storage cylinder
It is well known as a class of ballpoint pen refills in which the inner diameter of the ink container is large.

【0003】又、ボールハウス内に収納したボールをチ
ップ先端縁のかしめ加工により、その一部を先端縁より
外方に露出させ且つ、回動自在に抱持して成るボールペ
ンチップ内にボールを押圧する可動部材とコイルスプリ
ングを配設し、ボールを先端かしめ部の内壁に押圧して
成る構造のボールペンも、例えば、実公昭39−121
25号のように、その目的とするところの違いが感じら
れるものの周知技術と見なされるものである。
[0003] In addition, a ball housed in a ball house is caulked at the tip end edge to expose a part of the ball outward from the tip end edge, and the ball is inserted into a ballpoint pen tip which is rotatably held. A ball-point pen having a structure in which a movable member to be pressed and a coil spring are provided and a ball is pressed against the inner wall of the tip caulking portion is also disclosed in, for example, Japanese Utility Model Publication 39-121.
As in No. 25, although the difference in the purpose is felt, it is regarded as a well-known technique.

【0004】更に、実開平6−86977号にはゲルイ
ンキをインキ収容筒に収蔵し、該インキの後端部にイン
キの消費につれ追従するフォロアーを装填し更に、イン
キ収容筒の後端に通気手段を有する尾栓を止着すると共
に、ボールがその先端に抱持され且つ、ボールが直接コ
イルスプリングで弾発されてその内向きの先端縁に接触
したボールペンチップを、インキ収容筒の先端孔に嵌着
して成るボールペンレフィルが開示されている。
In Japanese Utility Model Application Laid-Open No. 6-86977, gel ink is stored in an ink container, and a follower that follows the consumption of the ink is loaded at the rear end of the ink. A ball-point pen tip that has a ball held at its tip and is directly repelled by a coil spring and comes into contact with its inward tip edge is inserted into the tip hole of the ink containing cylinder. A fitted ballpoint pen refill is disclosed.

【0005】かかる技術は、従来の20℃におけるイン
キ粘度が20,000mPa.s以上の高粘度インキに
よる油性ボールペンに対し、5mPa.s以下である低
粘度インキの水性ボールペンが、筆跡の鮮明さに加え軽
いタッチでスムーズに筆記できる利点に着目して、綿状
にしたプラスチック繊維をフィルムで被覆したインキ吸
蔵体に、水性インキを吸蔵させた中綿式のボールペン
や、インキ収容筒に直接水性インキを収蔵し、インキ出
調整機能を有する櫛溝のペン芯機構を持ったペン芯式直
詰ボールペン等が出現し、ボールペンの商品構成が増大
且つ多様化する中で、高粘度インキによるボールペン或
いは低粘度インキによるボールペンがそれぞれに抱える
問題点の解決をめざし、剪断減粘性を有する水性ゲルイ
ンキや中粘度油性インキを採用するに及んで、にわかに
注目されてきているものである。
[0005] This technique is based on the conventional technique that the ink viscosity at 20 ° C is 20,000 mPa.s. 5 mPa.s to an oil-based ballpoint pen with a high-viscosity ink of s or higher. Focusing on the advantage that a water-based ballpoint pen of low viscosity ink that is not more than s can write smoothly with a light touch in addition to the sharpness of the handwriting, the water-based ink is applied to the ink occlusion body covered with a film of flocculent plastic fiber with a film. The product configuration of ball-point pens has emerged, such as a padded ball-point pen that has been occluded, and a pen-core type directly-filled ball-point pen that stores water-based ink directly in the ink container and has a comb groove pen-core mechanism that has an ink output adjustment function. With the increase and diversification, aiming at solving the problems of ballpoint pens made of high-viscosity inks or ballpoint pens made of low-viscosity inks, in using water-based gel inks with shear thinning and medium-viscosity oil-based inks, It is something that has been noticed.

【0006】[0006]

【発明が解決しようとする課題】剪断減粘性を有する水
性ゲルインキや中粘度油性インキの採用は、高粘度油性
インキのボールペンが筆圧が高く、筆跡に泣き,ボテ,
カスレ等の問題があること又、低粘度水性ボールペンが
インキ消費量が多く、筆跡のにじみや裏うつりする性能
面の問題や、インキ収容筒を大きくしたり部品数が多い
こと等からコスト高になる等の問題解決を意図するもの
である。しかしながら、高粘度油性インキを用いたボー
ルペンレフィルはチップ先端部からのインキ乾燥やイン
キ漏出の心配が無いから、当然チップ先端部に弁機構を
設ける必要もなく、チップ先端部を下向き状態で携行さ
れるノック式ボールペンに用いることのできる最大利点
があったが、ボールをチップかしめ部内壁に押圧する弁
機構を伴う本発明が属するボールペンレフィルにあって
は、チップが下向き状態で仮にボールが脱落してしまう
と、インキは外部に流出して衣服を汚す結果を招来する
欠陥があった。
The use of water-based gel inks having a shear-thinning property and medium-viscosity oil-based inks requires that a ballpoint pen made of a high-viscosity oil-based ink has a high pen pressure, cry in handwriting,
The low viscosity aqueous ballpoint pen consumes a large amount of ink due to problems such as fraying. It is intended to solve problems such as becoming. However, ball-point pen refills using high-viscosity oil-based ink do not have to worry about ink drying or ink leakage from the tip of the tip, so there is no need to provide a valve mechanism at the tip of the tip, and the tip of the tip is carried down. Although there was a maximum advantage that could be used for a knock-type ballpoint pen, the ballpoint pen refill to which the present invention belongs, which has a valve mechanism for pressing the ball against the inner wall of the chip caulking portion, temporarily drops the ball with the chip facing down. In such a case, there is a defect that the ink leaks out and stains clothes.

【0007】[0007]

【課題を解決するための手段】本発明はかかる状態に鑑
みてなされたものであって、チップ先端にかしめ加工に
より抱持されたボールが、不測の事態でかしめ部を破壊
し外方に脱落した時、コイルスプリングで押圧されボー
ルと接していた可動部材が先端方向に移動し、そのボー
ル押圧部にテーパー面で形成した連結部がチップのイン
キ導通孔が後部孔に貫通した開口部と接触してできる弁
作用により、チップ先端部からのインキ流出を防止する
ものである。すなわち、チップのボールハウスと後部孔
に貫通するインキ導通孔を、軸心方向に所定長さに設け
て後部孔との開口部が真円が保たれるように形成すると
共に、可動部材のボール押圧部を、ボール面に当接する
インキ導通孔径より小径の先端部と、インキ導通孔径よ
り径大に設けた芯部とを連結する連結部をテーパー面に
形成することをもって課題解決のための手段とするもの
である。
SUMMARY OF THE INVENTION The present invention has been made in view of such a situation, and a ball held by caulking at the tip of a chip breaks a caulked portion in an unforeseen situation and falls outward. When the ball is pressed by the coil spring, the movable member that has been in contact with the ball moves toward the tip, and the connecting portion formed by a tapered surface on the ball pressing portion contacts the opening through which the ink conduction hole of the chip penetrates the rear hole. This prevents the ink from flowing out from the tip of the chip by the valve action that can be performed. That is, the ink passage hole penetrating the ball house and the rear hole of the chip is provided at a predetermined length in the axial direction so that the opening with the rear hole is kept in a perfect circle, and the ball of the movable member is formed. Means for solving the problem by forming a pressing portion on a tapered surface to form a connecting portion connecting a tip portion having a diameter smaller than the diameter of the ink conducting hole contacting the ball surface and a core portion provided with a diameter larger than the diameter of the ink conducting hole. It is assumed that.

【0008】[0008]

【発明の実施の形態】本発明は、インキ収容筒内に剪断
減粘性を有する水性ゲルインキ又は油性ゲルインキ或い
は、20℃におけるインキ粘度2,000〜10,00
0mPa.sの中粘度油性インキを収蔵し、該インキの
後部にインキの消費につれ追従するフォロアーを装填し
更に、インキ収容筒の後端開口部に通気手段を有する尾
栓を止着すると共に、インキ収容筒の先端孔に嵌着する
ボールペンチップ内又は、先端孔周辺を含むボールペン
チップ内に、チップ先端縁からその一部を外方に露出さ
せ且つ、回動自在に抱持されたボールの後端面と接する
ボール押圧部を設けた可動部材と、該可動部材の後端面
にその前端面を接するコイルスプリングを配設して、ボ
ールを常にチップ先端かしめ部内壁に押圧するように構
成した、チップ先端部に弁機構を設けて成るボールペン
レフィルであって、チップ先端かしめ部内壁面とボール
によるチップ先端部の弁機構と、コイルスプリングに弾
発された可動部材のボール押圧部の連結部とチップのイ
ンキ導通孔が後部孔に貫通した開口部による弁機構によ
り、チップが下向き状態で携行又は放置されてもチップ
先端部からインキの漏出を起こさず且つ、不測の事態で
ボールが脱落した場合でもチップ先端からのインキ流出
が防止できるように構成したものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an aqueous gel ink or an oil gel ink having a shear thinning viscosity in an ink container or an ink viscosity of 2,000 to 10,000 at 20.degree.
0 mPa. s The medium-viscosity oil-based ink is stored, a follower that follows the consumption of the ink is loaded in the rear part of the ink, and a tail plug having a ventilation means is fixed to the rear end opening of the ink storage cylinder. A rear end surface of a ball rotatably held in a ball-point pen tip fitted into a tip end hole of a cylinder or in a ball-point pen tip including a periphery of the tip end hole, with a part thereof being exposed outward from a tip end edge. A movable member provided with a ball pressing portion in contact with the tip end, and a coil spring contacting a front end surface of the movable member with a rear end surface thereof, so that the ball is constantly pressed against the tip end caulking portion inner wall. A ball-point pen refill having a valve mechanism provided at a portion thereof, wherein the valve mechanism at the tip portion of the tip is formed by a tip tip caulking portion inner wall surface and a ball, and a ball push of a movable member repelled by a coil spring. Due to the valve mechanism of the connection part of the part and the opening through which the ink conduction hole of the chip penetrates the rear hole, even if the chip is carried or left in a downward state, ink does not leak from the tip of the chip and in an unexpected situation Even if the ball falls, the ink is prevented from flowing out from the tip of the chip.

【0009】すなわち、前記ボールペンチップのボール
を抱持する先端かしめ部の内壁面に、可動部材を介して
コイルスプリングで弾発されたボールを常に接触させ
て、チップ先端を下向き状態で携行又は放置した場合に
おいて、チップ先端からインキが漏出することを防止す
ると共に、チップのボールハウスと後部孔に貫通するイ
ンキ導通孔を、軸心方向に所定長さに設けて後部孔との
開口部が真円に保たれるように形成すると共に、前記可
動部材のボール押圧部を、ボール面に当接するインキ導
通孔径より小径の先端部と、インキ導通孔径より径大に
設けた芯部とを連結する連結部をテーパー面に形成し
て、不測の事態でボールがチップ先端縁を通過して脱落
した場合において、可動部材がチップ先端方向に移動
し、チップのインキ導通孔開口部と可動部材の連結部が
接触し、弁機構が作用してチップ先端からのインキ流出
を防止するしくみを構成している。
That is, the ball repelled by a coil spring is constantly brought into contact with the inner wall surface of the tip caulking portion holding the ball of the ballpoint pen tip via a movable member, and the tip is carried or left in a downward state. In this case, ink is prevented from leaking from the tip of the chip, and an ink conducting hole penetrating the ball house and the rear hole of the chip is provided at a predetermined length in the axial direction so that the opening with the rear hole is true. The ball pressing portion of the movable member is formed so as to be kept in a circle, and is connected to a tip portion having a diameter smaller than the diameter of the ink passage hole contacting the ball surface and a core portion provided with a diameter larger than the diameter of the ink passage hole. The connecting part is formed on a tapered surface, and in the event that the ball drops through the tip edge of the tip in an unforeseen situation, the movable member moves toward the tip of the tip, and ink conduction of the tip occurs. Contact connection part of the opening and the movable member constitute a mechanism for preventing the ink outflow from the tip end valve mechanism acts.

【0010】[0010]

【実施例】以下、本発明の実施の形態を実施例を示した
図面を基に詳説する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings showing embodiments.

【0011】図1はチップ先端部に弁機構を設けて成る
ボールペンレフィルに関する本発明の要旨を説示するた
めに、チップ先端主要部を拡大して示した縦断面図であ
り、図2はボールが脱落した場合に作用する弁機構を説
示するチップ先端部縦断面図で、図3は本発明の実施例
であるボールペンレフィルの全体を示す縦断面図であ
る。
FIG. 1 is an enlarged longitudinal sectional view of a main part of a tip of a ball-point pen refill having a valve mechanism provided at the tip of the tip to illustrate the gist of the present invention. FIG. FIG. 3 is a vertical cross-sectional view illustrating a tip portion of a tip for illustrating a valve mechanism that operates when the ball-point pen falls off. FIG. 3 is a vertical cross-sectional view illustrating the entirety of a ballpoint pen refill according to an embodiment of the present invention.

【0012】本発明のボールペンレフィルは図3及び図
1に示したように、インキ収容筒内に剪断減粘性を有
する水性ゲルインキ又は油性ゲルインキ或いは、20℃
におけるインキ粘度2,000〜10,000mPa.
sの中粘度油性インキのボールペンインキ2を収蔵し、
該ボールペンインキ2の後部にインキの消費につれ追従
するフォロアー3を装填し更に、インキ収容筒後端開口
部1bには通気手段を有する尾栓4を止着すると共に、
インキ収容筒の先端孔1aに嵌着するボールペンチッ
内に、チップ先端縁5aからその一部を外方に露出
させ且つ、回動自在に抱持されたボール6の後端面と接
するボール押圧部7aを設けた可動部材と、該可動部
の後端面にその前端面を接するコイルスプリング8
を配設して、ボール6を常にチップ先端かしめ部内壁面
5bに押圧するよう構成したものである。なお、実施例
のコイルスプリング8はチップの後部孔5d内に配設
したが、インキ収容筒の先端孔1a周辺にバネ受部
(図示せず)を設けて配置するなど適宜な手段で配設で
きるものである。
[0012] ballpoint refill of the present invention as is shown in FIGS. 3 and 1, an aqueous gel ink or oil gel ink or having a shear-thinning the ink reservoir cylinder 1, 20 ° C.
Ink viscosity at 2,000 to 10,000 mPa.
s medium-viscosity oil-based ink ballpoint ink 2
A follower 3 that follows as the ink is consumed is loaded in the rear part of the ballpoint pen ink 2, and a tail plug 4 having a ventilation means is fixed to the rear end opening 1b of the ink container cylinder.
A ball that partially exposes outward from a tip end edge 5a in a ballpoint pen tip 5 fitted into the tip end hole 1a of the ink storage cylinder 1 and that contacts a rear end face of a ball 6 held rotatably. a movable member 7 provided with the pressing portion 7a, a coil spring 8 in contact with the front surface to the rear end face of the movable member 7
Is arranged so that the ball 6 is always pressed against the tip end caulking portion inner wall surface 5b. Although the coil spring 8 of the embodiment is disposed in the rear hole 5d of the tip 5, a suitable means such as providing a spring receiving portion (not shown) around the front end hole 1a of the ink container 1 is used. It can be arranged.

【0013】更に、実施例について詳説すると、インキ
収容筒はボールペンチップが嵌着する先端孔1aを
有する細径部1cと、ノック式ボールペンの場合その前
端面がバネ受座1dとなる中径部1eと、後端開口部1
bに尾栓4を止着する大径部1fとから成り、金属又は
合成樹脂で成形加工される。なお、大径部1fの前端面
に凹溝1g(又は、大径部から中径部に張り出した突部
(図示せず))を設けて、大径部1fの前端面を軸筒の
係止段部(図示せず)に突き当てるキャップ式ボールペ
ンにおいて、キャップ嵌合時に圧縮されるキャップ内空
気の逃げ通路と成し、ノック式及びキャップ式のいずれ
にも適用されるボールペンレフィルとして構成してあ
る。
Further, the embodiment will be described in detail. The ink container 1 has a small-diameter portion 1c having a tip hole 1a into which a ballpoint pen tip 5 is fitted, and a front end face of a knock type ballpoint pen serves as a spring seat 1d. Diameter portion 1e and rear end opening 1
and a large-diameter portion 1f for fixing the tail plug 4 to the b. A groove 1g (or a projection (not shown) projecting from the large diameter portion to the middle diameter portion) is provided on the front end surface of the large diameter portion 1f, and the front end surface of the large diameter portion 1f is engaged with the shaft cylinder. In a cap-type ball-point pen that abuts against a step (not shown), the ball-point pen is formed as a ball-point pen refill that forms an escape passage for air in the cap that is compressed when the cap is fitted and that is applied to both knock type and cap type. It is.

【0014】ボールペンチップは、テーパー状に削肉
された先端部にボールハウス5cを設け、ボールハウス
5cは中心にインキ導通孔5eが後部孔5dに貫通して
あり、その底部に、該インキ導通孔5eから放射線状に
穿設した複数のインキ溝5fが設けられ、ボール6に筆
圧が加わった時のボール座5gに形成し、ボール6を収
納した後チップ先端縁5aをかしめ治具により内向きに
かしめ加工を施し、ボール6の一部を外方に露出させ且
つ、回動自在に抱持してある。
The ball-point pen tip 5 is provided with a ball house 5c at a tapered tip, a ball house 5c having an ink conducting hole 5e penetrating through a rear hole 5d at the center, and the ink housed at the bottom thereof. A plurality of ink grooves 5f are formed radially from the conductive holes 5e. The ink grooves 5f are formed in a ball seat 5g when writing pressure is applied to the ball 6. After the ball 6 is stored, the tip end edge 5a is swaged. , A part of the ball 6 is exposed to the outside and held rotatably.

【0015】本発明のボールペンチップは、そのイン
キ導通孔5eが後部孔5dに貫通する開口部5hまでの
軸心方向の長さを通常のチップより長目に所定長さに設
けるものであって、その長さはインキ溝5fを穿設する
ために生ずるインキ導通孔5eの径方向に出る変形の影
響がなく、少なくともその開口部5hにおいて真円が保
たれる長さに設定するよう配慮されたものである。これ
により、図2で示すように、不測の事態でボール6がチ
ップ先端縁5aから外方に脱落した時、後述する可動部
は先端方向に移動し、可動部材のボール押圧部7
aに設けたテーパー面で形成された連結部7dが、先記
のインキ導通孔5eの開口部5hと接触して、チップ先
端からのインキ流出を防止する弁機構を構成することに
なる。
The ball-point pen tip 5 of the present invention is provided with a predetermined length in the axial direction up to the opening 5h, through which the ink conducting hole 5e penetrates the rear hole 5d, as compared with a normal tip. The length of the opening is not affected by the deformation of the ink passage hole 5e in the radial direction caused by the formation of the ink groove 5f, and is set to a length at which a perfect circle is maintained at least in the opening 5h. It was done. As a result, as shown in FIG. 2, when the ball 6 falls out of the tip end edge 5a in an unexpected situation, a movable member 7 described later moves toward the distal end, and the ball pressing portion 7 of the movable member 7 moves.
The connecting portion 7d formed by the tapered surface provided at the point (a) comes into contact with the above-mentioned opening 5h of the ink conducting hole 5e, and constitutes a valve mechanism for preventing ink from flowing out from the tip of the tip.

【0016】可動部材は、ボール6と接する外径がチ
ップのインキ導通孔5e径より小径の先端部7bとイ
ンキ導通孔径より径大の芯部7cとをテーパー面で連結
した連結部7dにより形成したボール押圧部7aと、略
中央から後端に向けその外径がチップの後部孔5d内
径よりやや小径の、複数枚のリブ状羽根部7eにより径
方向等間隔に区画して設けたインキ通路7fを有するイ
ンキ整流部7gとから形成されている。なお、ボール脱
落時に作用する弁機構の形態は、ここに示したものに限
るものではなく、例えば開口部5hと後部孔5dが連結
する傾斜面とボール押圧部7aの芯部7cを接触させる
ように構成(図示せず)する等であっても良いが、チッ
プ先端部に近い位置に設けた方が良いことはインキ汚れ
を防ぐ観点から当然のことであり又、ボール押圧部7a
の先端部7b長さはその先端面がボール脱落時にチップ
先端縁5aより充分内側に位置するように設定されるべ
きである。又、実施例の可動部材はインキ整流部7g
の構造について一例を示したが、要はインキの流れを阻
害しない構造で且つ、コイルスプリング8の前端面と屈
曲することなく接触する後端面を形成することが肝要で
ある。
The movable member 7 has a connecting portion 7d in which a tip 7b having an outer diameter in contact with the ball 6 having a diameter smaller than the diameter of the ink conducting hole 5e of the chip 5 and a core 7c having a larger diameter than the ink conducting hole are connected by a tapered surface. And a plurality of rib-shaped wings 7e whose outer diameter is slightly smaller than the inner diameter of the rear hole 5d of the chip 5 from the center to the rear end, and is provided at regular intervals in the radial direction. And an ink rectifying portion 7g having an ink passage 7f. The form of the valve mechanism that acts when the ball falls off is not limited to the one shown here, and for example, the inclined surface connecting the opening 5h and the rear hole 5d is brought into contact with the core 7c of the ball pressing portion 7a. Although not shown in the figure, it is naturally preferable to provide the position near the tip of the chip from the viewpoint of preventing ink contamination.
Of the tip 7b should be set so that the tip surface is located sufficiently inside the tip edge 5a when the ball falls. In addition, the movable member 7 of the embodiment has an ink rectification unit 7g.
Although an example has been shown with respect to the above structure, it is important to form a rear end surface that does not hinder the flow of ink and that makes contact with the front end surface of the coil spring 8 without bending.

【0017】本発明は、以上の如く形成された可動部材
を、ボール6とコイルスプリング8の間に配置して、
チップの後部孔5dにコイルスプリング8の一端を嵌
着することにより、常にボール6をチップ先端かしめ部
内壁面5bに押圧し、チップを下向き状態で携行又は
放置してもチップ先端からのインキ漏出が防止でき、不
測の事態でボールが脱落した場合でも、チップのイン
キ導通孔5eの開口部5hと、可動部材のボール押圧
部7aにテーパー面で形成した連結部7dとの接触によ
り弁機構が作用し、チップ先端からのインキ流出が防止
できるよう構成したもので、これによりノック式ボール
ペンに不安なく使用できる筆跡が鮮明で且つ滑らかな筆
記感触が得られるインキを使用したボールペンレフィル
が提供できたものである。
The present invention provides a movable member formed as described above.
7 is arranged between the ball 6 and the coil spring 8,
By fitting one end of the coil spring 8 into the rear hole 5d of the chip 5, the ball 6 is constantly pressed against the tip end caulking portion inner wall surface 5b, and the ink from the tip of the chip 5 is carried even when the chip 5 is carried or left down. Leakage can be prevented, and even if the ball falls off unexpectedly, contact between the opening 5h of the ink conducting hole 5e of the chip 5 and the connecting portion 7d formed of a tapered surface on the ball pressing portion 7a of the movable member 7 can be achieved. The valve mechanism works to prevent the ink from flowing out from the tip of the tip.This makes it possible to use the ballpoint pen refill with ink that can be used with a knock-type ballpoint pen without worry and provides a clear and smooth writing feel. It was provided.

【0018】[0018]

【発明の効果】従来、剪断減粘性を有する水性ゲルイン
キ或いは、20℃におけるインキ粘度2,000〜1
0,000mPa.sの中粘度油性インキを用いたボー
ルペンは、チップを上向きの状態で携行するキャップ式
タイプで商品化され、しかも、キャップ内にはゴムパッ
キンを入れてチップ先端からのインキ乾燥やインキ漏出
防止を行ってきており、チップを下向きの状態で携行す
るノック式ボールペンに用いるレフィルにすることは、
万が一ボールが脱落した時衣服を汚損するので実用化に
踏み切れなかったものである。本発明はチップ先端部に
インキ漏出防止の弁機構を設けて成るボールペンレフィ
ルに更に、ボール脱落時にチップ先端からのインキ流出
を防止する弁機構を新規に設定することでこの難題を解
決し、筆跡が鮮明で且つ滑らかな筆記感触が得られるイ
ンキを使用したボールペンレフィルが提供できたもので
ある。これによりノック式ボールペンに不安なく使用で
き商品の展開が大きく画せる効果ははかり知れないもの
がある。
Conventionally, an aqueous gel ink having a shear thinning viscosity or an ink viscosity of 2,000 to 1 at 20 ° C.
000 mPa. s Ballpoint pens using medium-viscosity oil-based inks are commercialized as cap-types that carry the chip with the chip facing upwards. In addition, a rubber packing is placed inside the cap to prevent ink drying and ink leakage from the tip of the chip. It is going to be a refill used for a knock type ballpoint pen that carries the chip in a downward state,
In the unlikely event that the ball falls off, the clothes would be soiled, so that it could not be put to practical use. The present invention solves this problem by providing a ballpoint pen refill having a valve mechanism for preventing ink leakage at the tip of the tip and a new valve mechanism for preventing ink from flowing out of the tip when the ball falls off. Provided a ball-point pen refill using an ink capable of obtaining a clear and smooth writing feel. As a result, there is an immeasurable effect that a knock-type ballpoint pen can be used without worry and the product can be greatly expanded.

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

【図1】本発明の実施例であるボールペンレフィルの先
端主要部を拡大して示す一部切欠縦断面図である。
FIG. 1 is a partially cutaway longitudinal sectional view showing an enlarged main part of a tip end of a ballpoint pen refill according to an embodiment of the present invention.

【図2】ボールが脱落した時の状態を示すチップ先端部
切欠縦断面図である。
FIG. 2 is a cutaway longitudinal sectional view of a tip portion of a tip showing a state when a ball falls off.

【図3】本発明の実施例であるボールペンレフィルの総
縦断面図である。
FIG. 3 is a total vertical sectional view of a ballpoint pen refill according to an embodiment of the present invention.

【符号の説明】 インキ収容筒 1a 先端孔 1b 後端開口部 2 ボールペン用インキ 3 フォロアー 4 尾栓 ボールペンチップ 5a チップ先端縁 5b 先端かしめ部内壁面 5c ボールハウス 5d 後部孔 5e インキ導通孔 5h 開口部 6 ボール 可動部材 7a ボール押圧部 7b 先端部 7c 芯部 7d 連結部 8 コイルスプリング[Description of Signs] 1 Ink storage cylinder 1a Tip hole 1b Rear end opening 2 Ink for ballpoint pen 3 Follower 4 Tail plug 5 Ballpoint pen tip 5a Tip end edge 5b Tip caulking portion inner wall surface 5c Ball house 5d Rear hole 5e Ink communication hole 5h Opening Part 6 ball 7 movable member 7a ball pressing part 7b tip part 7c core part 7d connecting part 8 coil spring

フロントページの続き (58)調査した分野(Int.Cl.6,DB名) B43K 1/08 B43K 7/02 B43K 7/08Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) B43K 1/08 B43K 7/02 B43K 7/08

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 ボールペン用インキをインキ収容筒に収
蔵し、該インキの後部にインキの消費につれ追従するフ
ォロアーを装填し更に、インキ収容筒の後端開口部に通
気手段を有する尾栓を止着すると共に、インキ収容筒の
先端孔に嵌着するボールペンチップ内又は、先端孔周辺
を含むボールペンチップ内に、チップ先端縁からその一
部を外方に露出させ且つ回動自在に抱持されたボールの
後端面と接する、ボール押圧部を設けた可動部材と、該
可動部材を弾発するコイルスプリングとを配設し、ボー
ルを常にチップ先端かしめ部内壁面に押圧するように構
成した、チップ先端部に弁機構を設けて成るボールペン
レフィルにおいて、前記ボールペン用インキ(2)が剪
断減粘性を有する水性ゲルインキ又は油性ゲルインキ或
いは、20℃におけるインキ粘度2,000〜10,0
00mPa.sの中粘度油性インキであって、前記ボー
ルペンチップ()のボールハウス(5c)と後部孔
(5d)に貫通するインキ導通孔(5e)を、軸心方向
に所定長さに設けて後部孔(5d)との開口部(5h)
が真円が保たれるように形成すると共に、前記可動部材
)のボール押圧部(7a)を、ボール(6)面に当
接するインキ導通孔(5e)径より小径の先端部(7
b)と、インキ導通孔(5e)径より径大に設けた芯部
(7c)とを連結する連結部(7d)をテーパー面に形
成したことを特徴とするチップ先端部に弁機構を設けて
成るボールペンレフィル。
1. A ballpoint pen ink is stored in an ink storage cylinder, a follower is mounted at the rear of the ink to follow the ink as it is consumed, and a tail plug having a ventilation means at a rear end opening of the ink storage cylinder is stopped. At the same time, a part of the tip is exposed outward from the tip end edge and rotatably held in the ballpoint pen tip fitted into the tip end hole of the ink container cylinder or in the ballpoint pen tip including the periphery of the tip end hole. A movable member provided with a ball pressing portion, which is in contact with the rear end surface of the ball, and a coil spring for resiliently moving the movable member, are disposed so that the ball is constantly pressed against the inner wall surface of the tip caulking portion. In a ball-point pen refill having a valve mechanism provided in a portion thereof, the ball-point pen ink (2) is an aqueous gel ink or an oil gel ink having a shear thinning property, or at 20 ° C. 2,000 to 10,000 ink viscosity
00 mPa. a medium-viscosity oil-based ink, wherein an ink passage hole (5e) penetrating through the ball house (5c) and the rear hole (5d) of the ballpoint pen tip ( 5 ) is provided at a predetermined length in the axial direction to form a rear portion. Opening (5h) with hole (5d)
Are formed so that a perfect circle is maintained, and the ball pressing portion (7a) of the movable member ( 7 ) is formed with a tip portion (7) having a diameter smaller than the diameter of the ink conducting hole (5e) in contact with the ball (6) surface.
A valve mechanism is provided at the tip end of the tip, wherein a connecting portion (7d) for connecting the core portion (7c) provided with a diameter larger than the diameter of the ink conducting hole (5e) is formed on a tapered surface. Ballpoint pen refill consisting of
JP8087513A 1996-03-15 1996-03-15 Ballpoint pen refill with valve mechanism at tip end Expired - Fee Related JP2834067B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8087513A JP2834067B2 (en) 1996-03-15 1996-03-15 Ballpoint pen refill with valve mechanism at tip end

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8087513A JP2834067B2 (en) 1996-03-15 1996-03-15 Ballpoint pen refill with valve mechanism at tip end

Publications (2)

Publication Number Publication Date
JPH09248990A JPH09248990A (en) 1997-09-22
JP2834067B2 true JP2834067B2 (en) 1998-12-09

Family

ID=13917077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8087513A Expired - Fee Related JP2834067B2 (en) 1996-03-15 1996-03-15 Ballpoint pen refill with valve mechanism at tip end

Country Status (1)

Country Link
JP (1) JP2834067B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5827725B2 (en) * 2014-06-27 2015-12-02 株式会社パイロットコーポレーション Oil-based ballpoint pen refill

Also Published As

Publication number Publication date
JPH09248990A (en) 1997-09-22

Similar Documents

Publication Publication Date Title
EP0685348A1 (en) Ball-point pen
JP2834067B2 (en) Ballpoint pen refill with valve mechanism at tip end
JP3553699B2 (en) Ballpoint pen refill
JP3753390B2 (en) Ballpoint pen refill with a valve mechanism at the tip
JP3197423B2 (en) Ballpoint pen
JP3260120B2 (en) Ballpoint pen refill
JP2878196B2 (en) Ballpoint pen refill with valve mechanism at tip end
JP2555677Y2 (en) Ballpoint pen
JP3251420B2 (en) Ballpoint pen
JP3333059B2 (en) Ballpoint pen
JP3643155B2 (en) Knock-type ballpoint pen
JP3494492B2 (en) Knock ballpoint pen
JP2575798Y2 (en) Ballpoint pen
JPH11139069A (en) Ball point pen
JP3444824B2 (en) Ballpoint pen
JP2872579B2 (en) Ballpoint pen
JPH07237388A (en) Pen filled with viscosity-reducing ink by shearing
JP2592621Y2 (en) Ballpoint pen
EP0736396A1 (en) Ballpoint pens
JP3317570B2 (en) Ballpoint pen refill
JP3197542B2 (en) Knock-type writing instrument
JPH11188987A (en) Ballpoint pen
JPH10329478A (en) Ballpoint pen
JPH10181278A (en) Ball point pen
JPH10181276A (en) Ball point pen

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071002

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081002

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091002

Year of fee payment: 11

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091002

Year of fee payment: 11

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101002

Year of fee payment: 12

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101002

Year of fee payment: 12

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111002

Year of fee payment: 13

LAPS Cancellation because of no payment of annual fees