JPH1016483A - Double pen type writing implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable smooth projection and withdrawal of writing end parts and to prevent clothes or the like from being stained by a method wherein writing bodies are moved forward and backward along helical grooves provided in a holder tube and are projected selectively by rotating a cap and portions connecting ink storing parts and the wiring end parts are formed of bendable parts. SOLUTION: When a cap 34 is rotated in one direction, slidable projecting parts 25 of sliders 21a and 21b slide along helical grooves 32b provided in the inner peripheral surface of a holder tube 30, one of the sliders moves forward, while the other moves backward, and the writing end part of a writing body 1a or 1b on the forward moving side is projected from the fore end opening of the holder tube 30. The writing end part is projected and withdrawn smoothly from the fore end opening, since a flexible bendable part 4 is provided in a writing front portion, although the shape of ink storing parts of the writing bodies 1a and 1b is unvaried. In a state wherein one writing body 1a is projected, besides, a ball part 39 of a clip 38 and a bulge part 33 of the peripheral surface of the holder tube 30 engage with each other and bring about a state wherein the clip 38 can not be put on a breast pocket or the like, and thus clothes or the like can be prevented from being stained.

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、複数のボールペン筆記
体を搭載した複式筆記具の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved writing instrument having a plurality of ballpoint pen writing bodies.

【０００２】[0002]

【従来の技術】一般に、シャープペンシルやボールペン
等の複数の筆記体を搭載して、軸先から選択的にその筆
記先端部を出没可能とした複式筆記具が知られている。2. Description of the Related Art In general, there is known a double-type writing instrument equipped with a plurality of writing objects such as a mechanical pencil and a ball-point pen so that the writing tip can be selectively protruded and retracted from an axis.

【０００３】又、水性ボールペンは、粘度が数ｍＰａ・
Ｓ以下の低粘性である為、軽い筆記圧で書けることが利
点であり、書き味が良好である特徴がある。しかしなが
ら、インキがペン先からだらだらと流れ出る直流現象
や、反対にボールペンの先から空気が流入してインキが
流出する逆流現象などが起こり易い欠点がある。これら
の現象は中綿と称する繊維の収束体などを用いて防止す
る方法がとられている。A water-based ballpoint pen has a viscosity of several mPa ·
Since it has a low viscosity of S or less, it is advantageous to be able to write with a light writing pressure, and has a characteristic that writing quality is good. However, there is a drawback that a DC phenomenon in which the ink flows slowly from the pen tip, and a reverse flow phenomenon in which the air flows in from the tip of the ballpoint pen and the ink flows out, are likely to occur. A method of preventing these phenomena by using a fiber convergence material called batting is used.

【０００４】一方、従来知られている油性ボールペン
は、それに使用するインキが粘度が数千ｍＰａ・Ｓ以上
の高粘度のために、ペン先からインキが流出する際にボ
ールが回転する時の抵抗が大きいため書き味が悪い欠点
がある。又、筆記の際に先端から流出するインキ量は少
なく、ボテ現象があり、筆記描線のムラがあり筆跡濃度
が薄いこと、高い筆記圧が必要なことなどの問題があ
る。On the other hand, conventionally known oil-based ball-point pens have a high viscosity of several thousands mPa · S or more of the ink used for the ball-point pens, so that the resistance to the rotation of the ball when the ink flows out of the pen tip is high. There is a drawback that writing is bad because of large size. In addition, there is a problem in that the amount of ink flowing out from the tip during writing is small, there is a dent phenomenon, the writing line is uneven, the writing density is low, and a high writing pressure is required.

【０００５】この油性ボールペンの改良として、最近、
上記の水性と油性との中間粘度領域（数ｍＰａ・Ｓ〜数
千ｍＰａ・Ｓ）のインキを用いる中粘度と呼ばれる水性
インキ用ボールペンが開発されている。このものは、先
端ボールの回転によって粘度が低下してインキがスムー
ズに流出する特性、所謂剪断減粘性を有する相対的に低
粘性の水性のインキを用いたボールペンである。又、油
性ボールペンの改良として、耐乾燥性に優れた低粘度の
油性インキを用いたボールペンが考えられるAs an improvement of the oil-based ballpoint pen, recently,
A ballpoint pen for water-based ink called a medium viscosity using an ink having an intermediate viscosity region between water and oil (several mPa · S to several thousand mPa · S) has been developed. This is a ballpoint pen using a relatively low-viscosity water-based ink having a characteristic of lowering the viscosity by the rotation of the tip ball and smoothly flowing out the ink, that is, a so-called shear thinning property. Further, as an improvement of the oil-based ball-point pen, a ball-point pen using a low-viscosity oil-based ink having excellent drying resistance can be considered.

【０００６】上記、中粘度の水性インキ、低粘度の油性
インキを用いたボールペンは何れも低粘性であることか
らチップ側を下向きにした場合に先端ボールとチップ抱
持部の隙間が生じるとインキが滲みでる直流問題や上向
き筆記や衝撃等でインキが逆流しやすい現象がある。イ
ンキが逆流や直流を起こすと衣類などを汚す危険があ
る。又、筆記具に搭載して、その筆記先端部が突出した
まま胸ポケット等に差した場合に、衣服を汚損するとい
う問題がある。The ballpoint pens using the medium-viscosity water-based ink and the low-viscosity oil-based ink are all low-viscosity, so that when the tip side is turned downward, a gap between the tip ball and the chip holding portion is generated. There is a phenomenon in which the ink tends to flow backward due to a direct current problem in which ink bleeds, upward writing, impact, or the like. If the ink causes backflow or direct current, there is a risk of soiling clothes and the like. In addition, when mounted on a writing instrument and inserted into a breast pocket or the like with the writing tip protruding, there is a problem in that clothes are soiled.

【０００７】[0007]

【発明が解決しようとする課題】本発明の目的は、筆記
先端部の耐乾燥性が維持されてシールキャップを外して
放置することができ、インキの直流や逆流を防止可能と
する機構を有する中粘度の水性、低粘度の油性ボールペ
ンの筆記体を構成し、大形で非変形となるボールペン筆
記体を複数本搭載して、筆記先端部がスムーズに出没可
能であり、又、筆記先端部が突出したままでは胸ポケッ
ト等に差せないように成して、筆記先端部の突出状態が
容易に認知されることで衣服等を汚損する心配のない複
式筆記具を単純な構造で安価に提供可能とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a writing tip having a mechanism capable of maintaining the drying resistance, allowing the seal cap to be left unattended, and preventing direct current or backflow of ink. Constitutes a medium-viscosity water-based, low-viscosity oil-based ballpoint pen, and is equipped with a plurality of large, non-deformable ballpoint pens, allowing the writing tip to appear and disappear smoothly. The protruding state of the writing tip can be easily recognized by making it impossible to insert it into the breast pocket etc. with the protruding part, so it is possible to provide a simple writing instrument with a simple structure that does not have to worry about soiling clothes etc. And

【０００８】[0008]

【課題を解決するための手段】本発明は、複数のボール
ペン筆記体を軸筒内に搭載して、選択的に夫々の筆記先
端部を軸筒の先端口から交互に出没可能とした複式筆記
具に於いて、当該複式筆記具は、後方部内周に螺旋溝が
形成された軸筒と、後方部内周に縦溝が形成されたキャ
ップと、複数のボールペン筆記体と、又それと連動する
ように設けられた摺動突部とガイド突部を備えた摺動コ
マで構成されて、軸筒内にボールペン筆記体が嵌挿され
ると共に軸筒後方部外周にキャップが回転のみ可能に止
着され、前記螺旋溝に摺動突部が、縦溝にガイド突部が
係合されて、軸筒に対しキャップを回転することでボー
ルペン筆記体が前後動可能と成され、又、ボールペン筆
記体のインキ収容部は略非変形で、且つ軸筒内空間に揺
動なく嵌挿されるものであって、インキ収容部と筆記先
端部を接続する部位がフレキシブルに変位可能な屈曲可
能部で形成されて成る。SUMMARY OF THE INVENTION According to the present invention, there is provided a double-type writing instrument in which a plurality of ballpoint pen writing bodies are mounted in a barrel, and each of the writing tips can be selectively protruded and retracted from the tip end of the barrel. In the compound writing instrument, a shaft cylinder having a spiral groove formed in the rear inner circumference, a cap having a vertical groove formed in the rear inner circumference, a plurality of ballpoint pen writing bodies, and provided so as to be interlocked therewith. It is composed of a sliding piece provided with a sliding protrusion and a guide protrusion, and a ballpoint pen writing body is inserted into the barrel and a cap is fixed to the outer periphery of the rear part of the barrel so that it can only rotate, and The sliding projection is engaged with the spiral groove, and the guide projection is engaged with the vertical groove. By rotating the cap with respect to the shaft cylinder, the writing pen of the ballpoint pen can be moved back and forth. The part is substantially non-deformable and is inserted into the space inside the barrel without swinging A than, portion for connecting the writing tip ink reservoir portion is formed by forming in displaceable bendable portion flexible.

【０００９】又、キャップの一側面に基部が固定されて
軸筒の前方に向かって配設されたクリップと、クリップ
の先方部に係止部を備えた玉部が設けられ、該玉部と対
接する軸筒周面の所定位置に係止部を備えた膨出部が設
けられて、キャップを回転して筆記先端部が軸筒の先端
口から突出した状態位置のみにおいて、クリップの玉部
と膨出部の係止部が相互に係合してクリップの玉部が軸
筒面から離反しないように構成されて成る。A clip having a base fixed to one side surface of the cap and disposed toward the front of the barrel, and a ball provided with a locking portion at the forward end of the clip are provided. A bulging portion provided with a locking portion is provided at a predetermined position on the peripheral surface of the barrel to be in contact with, and only when the cap is rotated so that the writing tip protrudes from the tip end of the barrel, the ball portion of the clip. And the engaging portion of the bulging portion is engaged with each other so that the ball portion of the clip does not separate from the shaft cylinder surface.

【００１０】又、ボールペン筆記体は、先端ボールを抱
持するチップと後方にインク収容管を有し、該インク収
容管内に筆記に伴う先端ボールの回転で粘性が低下して
流出される、所謂剪断減粘性を有した水性ボールペンイ
ンキ又は低粘度の油性インキが充填され、インキの後端
に筆記に伴うインキの消耗に追随して移動するグリース
状の半透明不乾性物から成るフォロアが充填されて成
る。又、上記ボールペン筆記体は、先端ボールがチップ
先端のボール抱持部の内縁に常時は押圧されて密接し、
筆記時には密接状態が解除されるようにチップ内にスプ
リングが設けられて成る。又、上記ボールペン筆記体
は、チップ後端に対接してボール弁が遊嵌された弁室が
設けられ、該弁室後部にボール弁が密接してインキの逆
流を防ぐボール受け座及び該ボール受け座からインキ収
容管に通ずる導孔が設けられて成る。The ballpoint pen writing body has a tip for holding the tip ball and an ink storage tube at the rear, and the viscosity of the tip ball is reduced by the rotation of the tip ball accompanying the writing and flows out into the ink storage tube. A water-based ballpoint pen ink or a low-viscosity oil-based ink having a shear-thinning property is filled, and the rear end of the ink is filled with a follower made of a grease-like translucent non-drying substance that moves following the consumption of the ink accompanying writing. Consisting of In addition, in the ballpoint pen writing body, the tip ball is always pressed against the inner edge of the ball holding portion at the tip of the tip and is in close contact with the tip,
A spring is provided in the tip so that the close contact state is released during writing. Further, the ballpoint pen writing body is provided with a valve chamber in which a ball valve is loosely fitted in contact with a rear end of the chip, and a ball receiving seat for preventing backflow of ink due to a close contact of the ball valve with the rear of the valve chamber. A guide hole is provided from the receiving seat to the ink storage tube.

【００１１】[0011]

【実施例】先ず、図１乃至図４は本発明の第１の実施例
を示している。図１に於いて、２本のボールペン筆記体
１ａ、１ｂが設けられている。本発明の意図する複式筆
記具は、所謂剪断減粘性を有した中粘度の水性、又は低
粘度の油性ボールペンインキが充填されたボールペン筆
記体や、大容量のインキを搭載した通常の油性ボールペ
ン筆記体などが必要に応じて組み合わされて用いられる
ものである。FIG. 1 to FIG. 4 show a first embodiment of the present invention. In FIG. 1, two ballpoint pen writing bodies 1a and 1b are provided. The dual writing implement intended by the present invention is a ballpoint pen writing medium filled with a so-called middle viscosity aqueous or low viscosity oily ballpoint pen ink having a shear thinning property, or a normal oily ballpoint pen writing body equipped with a large volume of ink. Are used in combination as needed.

【００１２】先ず、本発明の複式筆記具に搭載されるボ
ールペン筆記体に付いて説明する。尚、ボールペン筆記
体１ａと１ｂは同じ構成であり、例えば、インキ色など
が異なるものである。又、ボールペン筆記体に適用され
るインキは主として所謂剪断減粘性を有した中粘度水
性、低粘度の油性インキである。First, a ballpoint pen writing body mounted on the double-type writing instrument of the present invention will be described. Note that the ballpoint pen writing bodies 1a and 1b have the same configuration, and have different ink colors, for example. Further, the ink applied to the ballpoint pen writing material is mainly a medium-viscosity aqueous and low-viscosity oil-based ink having a so-called shear thinning property.

【００１３】チップ１１は、インキ流入可能なチャンネ
ルを有した座に先端ボール１２が略当接した状態で先端
ボール１２が回転自在に抱持されるようカシメられてい
る。又、チップ１１の内孔部にスプリング１４が内挿さ
れ、スプリング１４の後端が抜出不能となるようにチッ
プの後端を適宜カシメている。又、先端ボール１２がチ
ップ抱持部の内面に密接することは筆記先端の乾燥、イ
ンキの直流防止に対し極めて重要であって、そのために
先端ボールを抱持するチップ内面の表面粗さ、カシメに
よる密接精度を改善する為に内面の研削仕上げ、カシメ
精度を上げる為の二次的な塑性加工が配慮される。又、
先端ボールとの密接面に表面処理などが配慮される。
又、スプリング１４の先方は直線状の棒軸部１５とな
り、その先端が先端ボール１２の背面に押圧状態で当接
する。尚、先端ボール１２はその押圧によってチップ１
１のボール抱持部（カシメなどで形成）の内縁に密接状
態となる。The tip 11 is caulked so that the tip ball 12 is rotatably held with the tip ball 12 substantially in contact with a seat having a channel into which ink can flow. Further, the spring 14 is inserted into the inner hole of the chip 11, and the rear end of the chip is appropriately caulked so that the rear end of the spring 14 cannot be pulled out. In addition, it is extremely important that the tip ball 12 is in close contact with the inner surface of the tip holding portion in order to dry the writing tip and to prevent direct current of ink. Therefore, the surface roughness of the tip holding the tip ball and the caulking In order to improve the close contact accuracy, grinding of the inner surface and secondary plastic working to increase the crimping accuracy are considered. or,
The surface treatment etc. are considered in the close contact surface with the tip ball.
Further, the tip of the spring 14 becomes a straight rod shaft portion 15, and the tip of the rod portion 15 comes into contact with the back surface of the tip ball 12 in a pressed state. In addition, the tip ball 12 is pressed by the pressing to
The first ball holding portion (formed by caulking or the like) is in close contact with the inner edge.

【００１４】又、継ぎ手２は先端にチップ１１を圧着す
る前軸部３とインキ収容管１７の前端に圧着される後軸
部５が形成され、前軸部３と後軸部５との間がフレキシ
ブルに変位可能な屈曲可能部４で一体に接続された樹脂
成形品で形成される。又、継ぎ手２内にはチップ１１の
後端に対峙してボール弁１６が遊嵌された弁室７が設け
られており、チップ１１が下向きの時には導孔９が開放
されてインキ１８がチップ側に導通され、逆に上向きの
状態ではボール弁１６が導孔９を密閉してインキの逆流
を防止するよう構成されている。The joint 2 has a front shaft 3 for pressing the tip 11 at the tip and a rear shaft 5 for pressing the front end of the ink storage tube 17 at the front end, between the front shaft 3 and the rear shaft 5. Are formed of a resin molded product integrally connected by a flexible displaceable bendable portion 4. A valve chamber 7 in which a ball valve 16 is loosely fitted is provided in the joint 2 so as to face the rear end of the chip 11. When the chip 11 is downward, the guide hole 9 is opened and the ink 18 is filled with the chip 18. The ball valve 16 is configured to seal the guide hole 9 to prevent the ink from flowing backward when the ball valve 16 is in the upward direction.

【００１５】ところで、インキ収容管１７の横断面は略
Ｄ形（図示せず）を成しており、２本の平坦部を対接し
た状態で略円形となって後述する軸筒３０の内孔スペー
スに無駄なく内装する。又、３本の場合はインキ収容管
の横断面は円形を１２０度分割した略扇状と成される。
又、インキ収容管１７内には上記中粘度の水性又は低粘
度の油性インキが充填され、更に、このインキの後端に
インキの消耗と共にインキ面に接触して追随して移動可
能なグリース状の半透明不乾性物から成るフォロア１９
が充填されている。又、フォロア１９内にはフォロアと
略同等の比重を有する樹脂製のフォロア棒２０が浸漬さ
れている。The cross section of the ink storage tube 17 is substantially D-shaped (not shown), and has a substantially circular shape with two flat portions in contact with each other. Decorate the hole space without waste. In the case of three ink containers, the cross section of the ink storage tube is formed in a substantially fan shape obtained by dividing a circle into 120 degrees.
The ink storage tube 17 is filled with the above-mentioned medium-viscosity water-based or low-viscosity oil-based ink. Follower 19 consisting of translucent non-drying material
Is filled. In the follower 19, a resin-made follower rod 20 having substantially the same specific gravity as the follower is immersed.

【００１６】又、インキ収容管１７の後端孔には摺動コ
マ２１ａ前方の軸部２２が圧入固着されている。又、軸
部２２の周面にはインキ収容管１７内部と外気を連通す
る通気溝が設けられている。又、摺動コマ２１ａの後方
軸部２４の一側には適宜膨出した摺動突部２５とその後
方にガイド突部２６が形成されている。以上で、ボール
ペン筆記体１ａは構成される。又、ボールペン筆記体１
ｂも同様に構成される。A shaft portion 22 in front of the sliding piece 21a is press-fitted and fixed to the rear end hole of the ink storage tube 17. Further, a ventilation groove for communicating the inside of the ink storage tube 17 with the outside air is provided on the peripheral surface of the shaft portion 22. Further, a sliding protrusion 25 which is appropriately bulged is formed on one side of the rear shaft portion 24 of the sliding piece 21a, and a guide protrusion 26 is formed behind the sliding protrusion 25. Thus, the ballpoint pen writing body 1a is configured. Also, ballpoint pen cursive 1
b is similarly configured.

【００１７】図１の複式筆記具は、２種のボールペン筆
記体と、ボールペン筆記体を収納する軸筒３０と、軸筒
３０の後方に回転のみ可能に固定されるキャップ３４か
ら成る。又、軸筒３０に対しキャップ３４が必要に応じ
て取り外されて筆記体の交換などを行う。The double-type writing instrument shown in FIG. 1 comprises two kinds of ballpoint pen writing bodies, a barrel 30 for accommodating the ballpoint pen writing body, and a cap 34 fixed to the rear of the barrel 30 so as to be rotatable only. In addition, the cap 34 is removed from the shaft cylinder 30 as needed, and the writing body is replaced.

【００１８】ところで、軸筒３０のやや後方寄りの外周
に２箇所で膨出部３３が形成され、該膨出部３３の前面
には凸部３３ｂと凹部３３ａから成る係止部が形成され
ている。又、図１及び図２に示すように膨出部３３の後
方に筒部３１が延設されて、その筒部３１周面には円周
状の突部３２ａが形成されている。又、筒部３１の内周
に螺旋溝３２ｂが形成されている。軸筒３０内に上記ボ
ールペン筆記体１ａ，１ｂが嵌挿されると共に、ボール
ペン筆記体１ａ，１ｂの後端に設けた摺動コマ２１ａ，
２１ｂの摺動突部２５が弾性変形によって係合される。By the way, a bulging portion 33 is formed at two places on the outer periphery of the shaft cylinder 30 slightly rearward, and a locking portion composed of a convex portion 33b and a concave portion 33a is formed on the front surface of the bulging portion 33. I have. As shown in FIGS. 1 and 2, a tubular portion 31 extends behind the bulging portion 33, and a circumferential projection 32 a is formed on the peripheral surface of the tubular portion 31. Further, a spiral groove 32b is formed on the inner periphery of the cylindrical portion 31. The ballpoint pen writing bodies 1a, 1b are inserted into the barrel 30, and sliding pieces 21a, 21b provided at the rear ends of the ballpoint pen writing bodies 1a, 1b are provided.
The sliding projection 25 of 21b is engaged by elastic deformation.

【００１９】又、図３に示すようにキャップ３４は後端
に閉塞した天冠３６を有した筒体で、筒体の後方外周部
一側に基部３８ａで接続されたクリップ３８が前方に延
設されている。又、クリップ３８の玉部３９の後面に凸
部４０と凹部４１から成る係止部が形成されており、後
述するキャップ３４の回転に伴うクリップの円周動によ
って玉部３９の凸部４０が上記膨出部３３の凹部３３ａ
に係脱する。又、キャップ３４の前端内周に円周状の凹
溝３５が形成され、その後方内周に相対応する２箇所で
縦溝３７が形成されている。As shown in FIG. 3, the cap 34 is a tubular body having a crown 36 closed at the rear end, and a clip 38 connected to one side of a rear outer peripheral portion of the tubular body by a base 38a extends forward. Has been established. A locking portion composed of a convex portion 40 and a concave portion 41 is formed on the rear surface of the ball portion 39 of the clip 38, and the convex portion 40 of the ball portion 39 is moved by the circumferential movement of the clip accompanying rotation of the cap 34 described later. The concave portion 33a of the bulging portion 33
Disengage from A circumferential concave groove 35 is formed on the inner periphery of the front end of the cap 34, and longitudinal grooves 37 are formed at two corresponding positions on the inner periphery of the rear end.

【００２０】以上でキャップ３４は上記軸筒の筒部３１
に嵌装され、凹溝３５に突部３２ａが弾性変形によって
係合して、軸筒３０に対し回転可能で抜け止めされる。
その時、上記摺動コマ２１ａ，２１ｂのガイド突部２６
がそれぞれ上記縦溝３７に係合されて、軸筒３０に対す
るキャップ３４の回転でボールペン筆記体１ａ，１ｂが
交互に前後動してそれぞれの筆記先端部が軸筒の先端口
から出没可能となる。その際、上述したようにインキ収
容管１７は非変形であるが、屈曲可能部４によって筆記
先端部はスムーズに出没する。As described above, the cap 34 is connected to the cylindrical portion 31 of the shaft cylinder.
The projection 32a engages with the concave groove 35 by elastic deformation, so that the projection 32a is rotatable with respect to the shaft cylinder 30 and is prevented from coming off.
At this time, the guide projections 26 of the sliding pieces 21a and 21b are used.
Are respectively engaged with the vertical grooves 37, and the rotation of the cap 34 with respect to the barrel 30 causes the ball-point pen writing bodies 1a and 1b to alternately move back and forth, so that the respective writing tips can protrude and retract from the tip opening of the barrel. . At this time, as described above, the ink storage tube 17 is not deformed, but the bendable portion 4 allows the writing tip to smoothly move in and out.

【００２１】尚、ボールペン筆記体は上記実施例にを示
されるもの以外に、インキ誘導芯、インキ吸蔵体を有し
て構成されるもの、チップと液状インキの間にコレクタ
ーと呼ばれるインキ貯溜機構を有するものなどが考えら
れる。又、インキの蒸発や筆記先端部の乾燥の問題はイ
ンキの配合、チップ構造、空気置換構造の工夫で可能と
成る。ところで、上記請求項１に言及されるボールペン
筆記体はそれを含むものである。又、ボールペン筆記体
後端の摺動コマをインキ収容管と着脱可能と成し、更に
軸筒３０の先方を着脱可能な口先部とすることでボール
ペン筆記体の交換を可能とすることもできる。In addition to the above-mentioned embodiments, the ballpoint pen writing body is constituted by having an ink guiding core and an ink absorbing body, and has an ink storage mechanism called a collector between the tip and the liquid ink. And the like. In addition, problems such as evaporation of the ink and drying of the writing tip can be realized by devising the ink composition, the tip structure, and the air replacement structure. By the way, the ballpoint pen cursive referred to in claim 1 includes the pen. In addition, the sliding piece at the rear end of the ballpoint pen writing body is made detachable with the ink storage tube, and the tip of the barrel 30 is made a detachable tip so that the ballpoint writing body can be replaced. .

【００２２】又、図５及び図６は本発明の第２の実施例
を示している。因みに、上記実施例１は軸筒に対しキャ
ップを略１８０度の範囲で回転して、それぞれのボール
ペン筆記体の先端部を軸筒先端口から出没可能とするも
のであるが、第２の実施例は軸筒５０に対しキャップ３
４を略３６０度回転させるようにしたものである。この
場合には、回転抵抗を小さくできるので筆記体の出没ス
トロークを大きくすることが可能となり、従って、軸筒
の先方形状をスマートに設計できるメリットがある。
又、膨出部５３は一箇所でよい。FIGS. 5 and 6 show a second embodiment of the present invention. In the first embodiment, the cap is rotated in the range of approximately 180 degrees with respect to the barrel so that the tip of each writing pen of the ball-point pen can be protruded and retracted from the tip end of the barrel. Is the cap 3 for the barrel 50
4 is rotated approximately 360 degrees. In this case, since the rotational resistance can be reduced, the stroke of the cursive character can be increased, and therefore, there is a merit that the forward shape of the barrel can be smartly designed.
Further, the bulging portion 53 may be provided at one place.

【００２３】[0023]

【作用】軸筒３０に対してキャップ３４を一方に回転す
ると、摺動コマ２１ａ，２１ｂの摺動突部２５がキャッ
プの回転に伴い螺旋溝３２ｂに沿って摺動して、何れか
一方の摺動コマが前進、他方が後退して、前進側の筆記
体の筆記先端部を軸筒３０の先端口から突出させること
が可能となる。又、ボールペン筆記体のインキ収容部が
非変形であっても筆記先方部位がフレキシブルに変移す
るので作動が阻害されずに先端口からスムーズに筆記先
端部が出没する。When the cap 34 is rotated in one direction with respect to the shaft cylinder 30, the sliding projections 25 of the sliding pieces 21a and 21b slide along the spiral groove 32b with the rotation of the cap, and either one of them is rotated. The sliding piece moves forward, and the other slides back, so that the writing tip of the writing body on the advancing side can be projected from the tip end of the barrel 30. Further, even if the ink storage portion of the writing pen of the ballpoint pen is not deformed, the writing tip portion flexibly shifts, so that the writing tip portion smoothly comes out of the tip opening without disturbing the operation.

【００２４】又、一方のボールペン筆記体１ａが突出し
た状態に於いては、図１に示すようにクリップの玉部と
軸筒周面の膨出部が相互に係合してクリップが胸ポケッ
ト等に差せない状態となる。When the ballpoint pen writing body 1a is in a protruding state, as shown in FIG. 1, the ball portion of the clip and the bulging portion of the peripheral surface of the barrel are engaged with each other, and the clip is moved to the breast pocket. And so on.

【００２５】次に、キャップ３４を他方に回転すると摺
動コマ２１ａが後退してボールペン筆記体１ａの筆記先
端部が軸筒３０内に没入すると共に、摺動コマ２１ｂが
前進する。その時、筆記先端部が軸筒３０内に収容され
た携帯状態となり、その状態に対するクリップは膨出部
との係合が解除された位置となって胸ポケット等に容易
に差すことが可能となる。Next, when the cap 34 is rotated to the other side, the sliding piece 21a retreats, the writing tip of the ballpoint pen writing body 1a enters the barrel 30, and the sliding piece 21b moves forward. At that time, the writing tip is brought into a portable state in which it is accommodated in the barrel 30, and the clip for that state is at a position where the engagement with the bulging portion is released, so that the clip can be easily inserted into a breast pocket or the like. .

【００２６】更にキャップ３０を回転すると摺動コマ２
１ａが更に後退し、摺動コマ２１ｂが更に前進してボー
ルペン筆記体１ｂの筆記先端部が軸筒３０の先端口から
突出する。その状態に対するクリップは玉部と軸筒周面
の膨出部が相互に係合してクリップが胸ポケット等に差
せない状態となる。When the cap 30 is further rotated, the sliding piece 2
1a further retreats, the sliding piece 21b further advances, and the writing tip of the ballpoint pen writing body 1b projects from the tip opening of the barrel 30. In this state, the clip and the bulge of the peripheral surface of the shaft cylinder are engaged with each other so that the clip cannot be inserted into a breast pocket or the like.

【００２７】又、ボールペン筆記体１ａは、チップ１１
を上向きにした状態に於いて、そのボール弁１６が弁室
７のボール受け座８に位置して導孔９を密閉するので、
上向き筆記されてチップの先端ボール１２背面のインキ
がなくなっても、インキにヘッドが掛かり逆流すること
がない。従って、チップ１１を下向きにした時にはイン
キがすぐに流出可能となり、筆記で掠れが防止される。
（因みにボール弁を有しない構造では、上向き筆記でイ
ンキが逆流方向に作用するのでチップ内に空気を巻き込
み、下向き筆記で即インキが追随せず掠れが生じる）The writing pen 1a for the ballpoint pen is provided with a tip 11
When the ball valve 16 faces upward, the ball valve 16 is positioned on the ball receiving seat 8 of the valve chamber 7 and seals the guide hole 9.
Even if the ink is written upward and the ink on the back surface of the tip ball 12 of the chip runs out, the ink is caught by the head and does not flow backward. Therefore, when the chip 11 is turned downward, the ink can immediately flow out, and the writing is prevented from being rubbed.
(By the way, in the structure without a ball valve, the ink acts in the backward direction when writing upwards, so that air is trapped in the chip and the ink does not follow immediately when writing downwards, causing scuffing.)

【００２８】チップ１１を下向きにした筆記状態に於い
ては、ボール弁１６がチップ１１後端の一方に偏った状
態に当接し、他方にはチップ１１内にインキが流入可能
な流路が構成され、インキ収容管１７から導孔９を経て
弁室７に入ったインキ１８は先端ボール１２の背面まで
誘導される。この状態で、棒軸部１５の押圧で先端ボー
ル１２がチップ抱持部の内縁に密接されるのでインキの
直流が防止される。又、筆圧により先端ボール１２が微
小に後退するので隙間を生じてインキが流出可能とな
り、筆記により先端ボール１２の回転でインキがスムー
ズに流出され、ボテが無く、筆跡濃度の高い筆記が可能
となる。先端ボール１２の背面にはチャンネル（チップ
内孔に向かって貫通したインキ流入溝を複数箇所に有し
た先端ボールの受け座）がありチャンネルの中心孔には
棒軸部１５が貫通する。チップ内のインキはインキ流入
溝および中心孔と棒軸部１５との間の隙間を通じて先端
ボール１２背面に誘導される。In the writing state in which the tip 11 is directed downward, the ball valve 16 abuts on one of the rear ends of the tip 11 in a biased state, and the other side has a flow path through which ink can flow into the tip 11. Then, the ink 18 that has entered the valve chamber 7 from the ink storage tube 17 through the guide hole 9 is guided to the back of the tip ball 12. In this state, the tip ball 12 is brought into close contact with the inner edge of the chip holding portion by the pressing of the rod shaft portion 15, so that the direct current of the ink is prevented. In addition, the tip ball 12 slightly retreats due to the writing pressure, so that a gap is created and ink can flow out. By writing, the rotation of the tip ball 12 allows the ink to flow smoothly, and there is no dent and writing with high handwriting density is possible. Becomes On the back surface of the tip ball 12, there is a channel (a seat for the tip ball having a plurality of ink inflow grooves penetrating toward the inner hole of the chip), and the rod shaft portion 15 passes through the center hole of the channel. The ink in the chip is guided to the back of the tip ball 12 through the ink inflow groove and the gap between the center hole and the rod shaft portion 15.

【００２９】[0029]

【発明の効果】本発明の複式筆記具の構成及び作用は以
上の如くであり、大形で非変形となるボールペン筆記体
を複数本搭載して、筆記先端部がスムーズに出没可能と
成る。又、筆記先端部が突出したままではクリップが胸
ポケット等に差せないので、筆記先端部の突出状態が容
易に認知されて、筆記先端部のシャープエッジによる人
体や衣服の損傷が防止され、且つ、衣服等を汚損する心
配の無く、所用数の筆記体と、キャップ、軸筒で単純に
構成されるので安価に提供可能と成る。又、筆記先端部
の耐乾燥性が維持されてシールキャップを外して放置す
ることができ、インキの直流や逆流を防止可能とする機
構を有する中粘度の水性、低粘度の油性ボールペンの筆
記体を複数本搭載した便利な複式筆記具の提供が可能と
成る。The construction and operation of the double-type writing instrument of the present invention are as described above. A plurality of large, non-deformable ballpoint pen writing bodies are mounted so that the tip of the writing can be smoothly protruded and retracted. In addition, since the clip cannot be inserted into a breast pocket or the like while the writing tip is protruding, the projected state of the writing tip is easily recognized, and damage to the human body and clothes due to the sharp edge of the writing tip is prevented, and In addition, since there is no need to worry about soiling of clothes and the like, it is simply composed of the required number of writing bodies, a cap, and a barrel, so that it can be provided at a low cost. In addition, the writing tip of a medium-viscosity water-based and low-viscosity oil-based ball-point pen having a mechanism that allows the writing tip to maintain the drying resistance, remove the seal cap and leave the seal cap, and prevent direct current or backflow of ink. It is possible to provide a convenient dual-type writing instrument equipped with a plurality of writing instruments.

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

【図１】本発明の第１の実施例である複式筆記具の全体
を示す縦断面図で、一部非断面で示されている。又、２
種のボールペン筆記体が搭載されている。FIG. 1 is a longitudinal sectional view showing the entirety of a double-type writing instrument according to a first embodiment of the present invention, which is partially not shown in section. 2
It has a kind of ballpoint pen cursive.

【図２】軸筒部位の後方を示す要部縦断面図である。FIG. 2 is a longitudinal sectional view of a main part showing a rear part of a shaft cylinder part.

【図３】キャップの断面図である。FIG. 3 is a sectional view of a cap.

【図４】本発明に使用されるボールペン筆記体の縦断面
図である。FIG. 4 is a longitudinal sectional view of a ballpoint pen writing body used in the present invention.

【図５】本発明の第２の実施例である複式筆記具の全体
を示す縦断面図で、一部非断面で示されている。又、２
種のボールペン筆記体が搭載されている。FIG. 5 is a longitudinal sectional view showing the entirety of a double-type writing instrument according to a second embodiment of the present invention, which is partially not shown in section. 2
It has a kind of ballpoint pen cursive.

【図６】第２の実施例に於ける、軸筒部位の後方を示す
要部縦断面図である。FIG. 6 is a longitudinal sectional view of a main part showing a rear part of a shaft cylinder part in a second embodiment.

【符号の説明】[Explanation of symbols]

１ａ ボールペン筆記体 １ｂ ボールペン筆記体 ２ 継ぎ手 ３ 前軸部 ４ 屈曲可能部 ５ 後軸部 ６ 鍔部 ７ 弁室 ８ ボール受け座 ９ 導孔 １０ 内孔部 １１ チップ １２ 先端ボール １３ 軸部 １４ スプリング １５ 棒軸部 １６ ボール弁 １７ インキ収容管 １８ インキ １９ フォロア ２０ フォロア棒 ２１ａ 摺動コマ ２１ｂ 摺動コマ ２２ 軸部 ２３ 通気溝 ２４ 後方軸部 ２５ 摺動突部 ２６ ガイド突部 ３０ 軸筒 ３１ 筒部 ３２ａ 突部 ３２ｂ 螺旋溝 ３３ 膨出部 ３３ａ 凹部 ３３ｂ 凸部 ３４ キャップ ３５ 凹溝 ３６ 天冠 ３７ 縦溝 ３８ クリップ ３８ａ 基部 ３９ 玉部 ４０ 凸部 ４１ 凹部 ５０ 軸筒 ５１ 螺旋溝 ５２ 螺旋溝 ５３ 膨出部 1a Ballpoint pen writing body 1b Ballpoint pen writing body 2 Joint 3 Front shaft part 4 Bendable part 5 Rear shaft part 6 Flange part 7 Valve room 8 Ball receiving seat 9 Guide hole 10 Inner hole part 11 Chip 12 Tip ball 13 Shaft part 14 Spring 15 Rod shaft part 16 Ball valve 17 Ink storage tube 18 Ink 19 Follower 20 Follower rod 21a Sliding piece 21b Sliding piece 22 Shaft part 23 Vent groove 24 Rear shaft part 25 Sliding protrusion 26 Guide protrusion 30 Shaft tube 31 Tube portion 32a protrusion 32b spiral groove 33 bulge 33a concave 33b convex 34 cap 35 concave groove 36 crown 37 vertical groove 38 clip 38a base 39 ball 40 convex 41 concave 50 barrel 50 spiral groove 52 spiral groove 53 bulge Department

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 複数のボールペン筆記体を軸筒内に搭載
して、選択的に夫々の筆記先端部を軸筒の先端口から交
互に出没可能とした複式筆記具に於いて、当該複式筆記
具は、後方部内周に螺旋溝が形成された軸筒と、後方部
内周に縦溝が形成されたキャップと、複数のボールペン
筆記体と、又それと連動するように設けられた摺動突部
とガイド突部を備えた摺動コマで構成されて、軸筒内に
ボールペン筆記体が嵌挿されると共に軸筒後方部外周に
キャップが回転のみ可能に止着され、前記螺旋溝に摺動
突部が、縦溝にガイド突部が係合されて、軸筒に対しキ
ャップを回転することでボールペン筆記体が前後動可能
と成され、又、ボールペン筆記体のインキ収容部は略非
変形で、且つ軸筒内空間に揺動なく嵌挿されるものであ
って、インキ収容部と筆記先端部を接続する部位がフレ
キシブルに変位可能な屈曲可能部で形成されたことを特
徴とする複式筆記具。Claims: 1. A multiple writing implement in which a plurality of ballpoint pen writing bodies are mounted in a barrel, and each of the writing tips can be alternately protruded and retracted from the tip end of the barrel. A shaft cylinder having a spiral groove formed on the inner periphery of the rear portion, a cap having a vertical groove formed on the inner periphery of the rear portion, a plurality of ballpoint pen writing bodies, and sliding protrusions and guides provided in conjunction therewith. It consists of a sliding piece with a projection, a ballpoint pen writing body is inserted into the barrel, and a cap is fixed to the outer circumference of the rear part of the barrel so that it can only rotate, and a sliding projection is provided in the spiral groove. The guide projection is engaged with the vertical groove, and the ball-point pen writing body can be moved back and forth by rotating the cap with respect to the barrel, and the ink storage portion of the ball-point writing body is substantially non-deformed, and It is inserted into the space inside the shaft cylinder without swinging, and A writing instrument, characterized in that a portion connecting the writing tip and the writing tip is formed by a flexibly bendable portion that can be flexibly displaced. 【請求項２】 キャップの一側面に基部が固定されて軸
筒の前方に向かって配設されたクリップと、クリップの
先方部に係止部を備えた玉部が設けられ、該玉部と対接
する軸筒周面の所定位置に係止部を備えた膨出部が設け
られて、キャップを回転して筆記先端部が軸筒の先端口
から突出した状態位置のみにおいて、クリップの玉部と
膨出部の係止部が相互に係合してクリップの玉部が軸筒
面から離反しないように構成されたことを特徴とする上
記請求項１記載の複式筆記具。2. A clip having a base fixed to one side surface of the cap and disposed toward the front of the barrel, and a ball provided with a locking portion at a forward end of the clip. A bulging portion provided with a locking portion is provided at a predetermined position on the peripheral surface of the barrel to be in contact with, and only when the cap is rotated so that the writing tip protrudes from the tip end of the barrel, the ball portion of the clip. 2. The double writing implement according to claim 1, wherein the engaging portion of the bulging portion and the bulging portion are engaged with each other so that the ball portion of the clip does not separate from the shaft cylinder surface. 【請求項３】 上記ボールペン筆記体は、先端ボールを
抱持するチップと後方にインク収容管を有し、該インク
収容管内に筆記に伴う先端ボールの回転で粘性が低下し
て流出される、所謂剪断減粘性を有した水性ボールペン
インキ又は低粘度の油性インキが充填され、インキの後
端に筆記に伴うインキの消耗に追随して移動するグリー
ス状の半透明不乾性物から成るフォロアが充填されて構
成された請求項１記載の複式筆記具。3. The ballpoint pen writing body has a tip for holding the tip ball and an ink storage tube at the rear, and the viscosity of the tip ball is reduced by the rotation of the tip ball accompanying writing and flows out into the ink storage tube. Filled with water-based ballpoint pen ink or so-called low-viscosity oil-based ink with so-called shear-thinning properties, and the rear end of the ink is filled with a follower made of a grease-like translucent non-drying substance that moves following the consumption of ink accompanying writing. The double-type writing instrument according to claim 1, wherein the writing instrument is formed. 【請求項４】 上記ボールペン筆記体は、先端ボールが
チップ先端のボール抱持部の内縁に常時は押圧されて密
接し、筆記時には密接状態が解除されるようにチップ内
にスプリングが設けられて成る請求項３記載の複式筆記
具。4. The ballpoint pen writing body is provided with a spring in the tip so that the tip ball is always pressed against the inner edge of the ball holding portion at the tip of the tip to be in close contact with the tip, and the written state is released during writing. The dual writing implement according to claim 3, wherein 【請求項５】 上記ボールペン筆記体は、チップ後端に
対接してボール弁が遊嵌された弁室が設けられ、該弁室
後部にボール弁が密接してインキの逆流を防ぐボール受
け座及び該ボール受け座からインキ収容管に通ずる導孔
が設けられて成る請求項４記載の複式筆記具。5. The ball-point pen writing body is provided with a valve chamber in which a ball valve is loosely fitted in contact with a tip end of the tip, and the ball valve is in close contact with a rear portion of the valve chamber to prevent a backflow of ink. 5. The dual writing implement according to claim 4, further comprising a guide hole extending from the ball receiving seat to the ink storage tube.