JP3793968B2 - Writing instrument - Google Patents

Writing instrument Download PDF

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Publication number
JP3793968B2
JP3793968B2 JP2002336246A JP2002336246A JP3793968B2 JP 3793968 B2 JP3793968 B2 JP 3793968B2 JP 2002336246 A JP2002336246 A JP 2002336246A JP 2002336246 A JP2002336246 A JP 2002336246A JP 3793968 B2 JP3793968 B2 JP 3793968B2
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JP
Japan
Prior art keywords
cam
refill
writing
rotating cam
lid
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 - Lifetime
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JP2002336246A
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Japanese (ja)
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JP2004167830A (en
Inventor
裕之 金成
洋介 石井
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Micro Co Ltd
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Micro Co Ltd
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 Micro Co Ltd filed Critical Micro Co Ltd
Priority to JP2002336246A priority Critical patent/JP3793968B2/en
Priority to TW092115748A priority patent/TWI224056B/en
Priority to US10/612,564 priority patent/US6866436B2/en
Priority to KR10-2003-0045269A priority patent/KR100503569B1/en
Priority to CNB031328911A priority patent/CN1251887C/en
Priority to DE2003605415 priority patent/DE60305415T2/en
Priority to EP20030024402 priority patent/EP1422075B1/en
Publication of JP2004167830A publication Critical patent/JP2004167830A/en
Application granted granted Critical
Publication of JP3793968B2 publication Critical patent/JP3793968B2/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/02Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K7/00Ball-point pens
    • B43K7/12Ball-point pens with retractable ball points
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00Pens with writing-points other than nibs or balls
    • B43K8/02Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
    • B43K8/028Movable closure or gate

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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、回転カム式繰出機構によりリフィールを筆記位置と収納位置に移動させるようにした筆記具に関する。
【0002】
【従来の技術】
筆記具の回転カム式繰出機構は種々知られているが、基本的には、外カムと回転カムと案内カムを有し、回転カムは軸方向に移動可能にかつ回転可能に設けられ、外カムは該回転カムの軸方向への移動を規制すると共に該回転カムに回転を与え、また案内カムは上記回転カムが外カムから外れたときに該回転カムに回転を与える機能を有している。そして、通常、上記外カムを軸筒の後部内面に形成し、上記案内カムをカムバーやノックカムの前部に形成してその後部を軸筒の後端から突出し、該カムバー等をノック操作することにより上記回転カムを介して上記リフィールを筆記位置に前進させたり、収納位置に後退させたりできるように構成されている。
【0003】
上記のように、従来の回転カム式繰出機構は、部品点数が多く、製造や組立が面倒であり、その上軸筒の後部に繰出機構が設けられているので、筆記具の全長が長くなり、コンパクトに形成しようとすると短い長さのリフィールしか用いることができず、長いリフィールを使用することができなかった。
【0004】
全体をコンパクトにするため、外カムを有する筒状のカム本体を先具に取り付け、該カム本体内にカムバー、回転カム、ばね等を収納し、該先具を軸筒の先端に取り付け、該軸筒の側面に摺動可能に設けた操作部を上記カムバーに連結し、サイドノック式にリフィールを出没できるようにした筆記具も提案されている(例えば特許文献1参照)。しかし、そのような筆記具も従来のものと同じように部品点数が多く、経済的に得られない。
【0005】
【特許文献】
実公平6−32394号公報(実用新案登録請求の範囲、図面)
【0006】
【発明が解決しようとする課題】
本発明の解決課題は、回転カム式繰出機構によりリフィールを出没させるようにした筆記具において、構成が簡単でコンパクトに形成でき、部品点数が少なく、経済的に得られ、また長いリフィールも使用することができる筆記具を提供することである。
【0007】
さらに、本発明の解決課題は、上記の如き筆記具において、リフィールを収納した際に筆記先端を気密的に保持できるようにした筆記具を提供することである。
【0008】
【課題を解決するための手段】
本発明によれば、軸筒内に軸方向に移動可能にかつ回転可能に設けた回転カムと、該回転カムの軸方向への移動を規制しかつ回転カムを回転させる外カムと、上記回転カムが外カムから外れたとき該回転カムを回転させる案内カムを含む回転カム式繰出機構によりリフィールを筆記位置と収納位置に移動させるようにした筆記具において、上記外カムを軸筒の前部内面に形成し、該外カム内に回転カムを挿入し該回転カムにリフィールを取り付け、該軸筒に連結した先具の後端に上記回転カムの前方に位置するよう案内カムを一体的に形成したことを特徴とする筆記具が提供され、上記課題が解決される。
【0009】
また、本発明によれば、上記筆記具において、蓋体を有するエアタイトスリーブを先具内に設けて上記リフィールの筆記先端を取り囲み、該リフィールが筆記位置に移動するとき上記蓋体を開放し、該リフィールが収納位置に移動するとき上記蓋体を閉鎖して上記筆記先端を気密的に保持するようにした上記筆記具が提案され、上記課題が解決される。
【0010】
【発明の実施の形態】
図1は本発明の一実施例を示し、各種のリフィール、例えばマーカー、水性インキペン、水性ボールペン、修正ペン、蛍光ベンその他の蒸発しやすい筆記成分を含むリフィール(1)を有する筆記具(2)が示されており、該リフィール(1)を収納した軸筒(3)の先端には、通孔(4)を有する先具(5)が連結されている。
【0011】
図1、図2を参照し、上記軸筒(3)内には、段部(6)が形成され、該段部(6)とリフィール(1)の肩部(7)間にばね(8)を設けて、上記リフィール(1)を後方に付勢してあり、該段部(6)の前方には回転カム式繰出機構を構成する外カム(9)が形成されている。該外カム(9)は、公知のように、回転カム(10)の軸方向の移動を規制するよう軸方向に延びる深さの深いカム溝(11a) と浅いカム溝(11b) を交互に有し、前端に回転カム(10)を回転するための山形状のカム面(12)が形成され、上記軸筒(3)の前部内面に一体的に設けられているが、別体の略筒状体に形成して上記軸筒内に固定するようにしてもよい(図示略)。
【0012】
上記回転カム(10)は、上記軸筒内で軸方向に移動可能にかつ回転可能に設けられ、上記外カム(9)内に挿入できる外径を有する略円筒状に形成され、内面に上記リフィール(1)の首部(13)に嵌合する連結部(14)を有している。該回転カム(10)の外周には、上記外カム(9)のカム溝(11a),(11b) に係合する突起(15)が設けられ、該突起(15)の後端には上記外カム(9)のカム面(12)に係合する傾斜カム面(16)が設けられている。また、該回転カム(10)の前部には、案内カム(17)に係合する前端カム面(18)が設けられている。
【0013】
上記回転カム(10)の連結部(14)は、リフィール(1)の筆記先端(19)側から首部(13)まで挿入できるよう弾性的に拡開可能に形成され、上記首部(13)まで挿入したとき上記リフィール(1)に形成したフランジ(20)に前端縁(21)が係合し、内方肩部(22)に基端縁(23)が係合する。なお、該回転カム(10)はリフィールに嵌合した状態で回転できるよう該リフィールに遊嵌しているが、該リフィールに固定的に設けたり、該リフィールと一体的に形成してもよい。
【0014】
上記先具(5)の後端には、図4に示すように、上記回転カム(10)の前方に位置するよう案内カム(17)が一体的に形成されている。該案内カム(17)は、上記回転カム(10)の突起(15)が外カムのカム溝(11a),(11b) から外れたとき、該回転カム(10)の前端カム面(18)が当って該回転カム(10)を回転させるよう山形状のカム面(24)を有している。該カム面(24)は、回転カム(10)を所定角度づつ回転させるよう上記外カム(9)のカム面(12)に対向する部位に固定的に位置していることが必要である。そのため、図においては、軸筒内に形成した環状の係止突起(25)に係合するよう係合凹部(26)を先具(5)の外周に形成し、また軸筒に形成した軸方向の係止孔(27)に係合する突起(28)を有し、それぞれを係合させて回り止め状態で軸筒(3)に連結してあるが、圧入、接着、係止ピンその他適宜の連結構造により位置決めした状態で連結することもできる。
【0015】
上記構成により、収納位置で軸筒(3)の後端から突出しているリフィール(1)を直接若しくは該リフィールの後部に取り付けた適宜の操作片(図示略)を介して前方にノックすると、回転カム(10)の突起(15)は外カム(9)の深いカム溝(11a) から外れ、上記案内カム(17)に当って回転カムは回転され、ノックを止めると上記突起(15)は外カム(9)の浅いカム溝(11b) に係合し、リフィール(1)は筆記先端(19)が通孔(4)から突出した筆記位置に保持される。その状態でリフィール(1)をノックすると、上記回転カム(10)は上述のように回転し、ノックを止めると上記突起(15)は外カム(9)の深いカム溝(11a) に係合し、リフィール(1)は収納位置に後退する。これらの基本的な動作は、公知の回転カム式繰出機構と同一である。
【0016】
上記リフィールの筆記成分が蒸発性でないボールペンやシャープペンシルの場合は上記構成でよいが、蒸発性の場合には、上記先具(5)内にリフィールの筆記先端(19)を取り囲むようエアタイトスリーブ(29)を設けることが好ましい。該エアタイトスリーブ(29)としては、前部に蓋体(30)を有し、リフィール(1)が筆記位置に移動するとき該蓋体(30)が開放され、収納位置に移動するとき該蓋体(30)を閉鎖して上記筆記先端(19)を気密的に保持するようにした適宜の構成を採用することができる。
【0017】
上記エアタイトスリーブの上記蓋体を開閉する機構としては、適宜のばね部材等を設けて行うこともできるが(図示略)、図に示す実施例においては、上記リフィール(1)が筆記位置に移動する際上記エアタイトスリーブ(29)が前進位置に移動し、上記リフィール(1)が収納位置に移動する際に後退位置に移動するようエアタイトスリーブ(29)を前後動可能に設け、この移動に伴って上記蓋体(30)が開閉するようにしてある。
【0018】
すなわち、図5、図6に示すように上記エアタイトスリーブ(29)は、プラスチック材料で作られ、外面に設けた案内突起(31)を先具(5)の案内溝(32)に挿入した状態で前後動可能に設けられており、内面には上記リフィール(1)に形成した係止部(33)に係合可能な嵌合部(34)を有している。該嵌合部(34)は、上記リフィール(1)が収納位置にあるとき上記係止部(33)に気密的に嵌合(係合)し(図7(A))、それにより上記リフィール(1)が筆記位置に移動するとき該リフィールの移動に伴ってエアタイトスリーブ(29)も移動するようにしてある。上記エアタイトスリーブ(29)の後端には、先具(5)の肩部(35)に当接するようストッパー(36)を設けてあるので、図7(B)のように該肩部(35)にストッパー(36)が当る位置までエアタイトスリーブ(29)が前進するとその位置に停止し、リフィールをさらに前進させると上記嵌合部(34)と係止部(33)の嵌合(係合)は外れ、エアタイトスリーブ(29)は前進位置に保持される。
【0019】
一方、上記蓋体(30)は、スリーブの傾斜開口縁(37)の基端に一体的なヒンジ(38)で揺動可能に設けられており、背面には押圧リブ(39)が形成され、先具(5)には該押圧リブ(39)が摺動する摺動面(40)と該押圧リブ(39)が嵌入する窓孔(41)が設けられている。上記エアタイトスリーブ(29)が後退位置にあるとき、上記押圧リブ(39)は上記摺動面(40)に摺接して上記蓋体(30)を上記傾斜開口縁(37)に圧着して上記傾斜開口縁(37)を閉じている(図7(A))が、上述のようにエアタイトスリーブ(29)が前進位置に移動したときは上記押圧リブ(39)は上記窓孔(41)に嵌入して蓋体(30)は揺動し(図7(C))、上記傾斜開口縁(37)を開放して上記リフィール(1)の筆記先端(19)を先具(5)の通孔(4)から外方に突出させることができる(図8(A))。そして、上述のように回転カム(10)が回転し(図8(B))、リフィール(1)が筆記位置に保持されると、図8(C)に示すように筆記することができる。
【0020】
リフィール(1)をノックして筆記位置から収納位置に後退させると、移動の途中で上記係止部(33)が嵌合部(34)に嵌合(係合)し(図7(C))、上記エアタイトスリーブ(29)は該リフィール(1)の移動に伴って前進位置から後退位置に戻る。そのとき、上記押圧リブ(39)は、上記窓孔(41)から抜け出し、上記摺動面(40)を摺動し(図7(B))、上記蓋体(30)は該押圧リブ(39)により上記傾斜開口縁(37)に圧着され、上記筆記先端(19)は気密的に保持される(図7(A))。
【0021】
【発明の効果】
本発明は上記のように構成され、回転カムに回転を与える案内カムを先具の後部に一体的に形成したから、回転カム式繰出機構を構成する部品点数を少なくでき、構成が簡単であり、また軸筒の前部に上記機構を組み込んだので、長いリフィールを用いても筆記具全体をコンパクトに形成できる。その上、先具内にエアタイトスリーブを組み込むことにより、蒸発性の筆記成分を含むリフィールであっても筆記先端が乾燥することなく、長く使用することができる。
【図面の簡単な説明】
【図1】本発明の一実施例を示す一部省略断面図。
【図2】軸筒の断面図。
【図3】回転カムを示し、(A)は正面図、(B)は側面図、(C)は断面図。
【図4】先具を示し、(A)は断面図、(B)は側面図。
【図5】エアタイトスリーブの斜視図。
【図6】一部の分解断面図。
【図7】(A)〜(C)は動作を示す説明図。
【図8】(A)〜(C)は図7に続く動作の説明図。
【符号の説明】
1…リフィール
3…軸筒
5…先具
9…外カム
10…回転カム
17…案内カム
19…筆記先端
29…エアタイトスリーブ
30…蓋体
37…傾斜開口縁
39…押圧リブ
41…窓孔
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a writing instrument in which a refill is moved to a writing position and a storage position by a rotating cam type feeding mechanism.
[0002]
[Prior art]
Various rotary cam type feeding mechanisms for writing instruments are known. Basically, the rotary cam has an outer cam, a rotary cam, and a guide cam, and the rotary cam is provided so as to be movable and rotatable in the axial direction. Restricts movement of the rotating cam in the axial direction and applies rotation to the rotating cam, and the guide cam has a function of rotating the rotating cam when the rotating cam is detached from the outer cam. . Usually, the outer cam is formed on the inner surface of the rear part of the shaft cylinder, the guide cam is formed on the front part of the cam bar or the knock cam, the rear part protrudes from the rear end of the shaft cylinder, and the cam bar or the like is knocked. Thus, the refill can be advanced to the writing position or retracted to the storage position via the rotating cam.
[0003]
As described above, the conventional rotary cam type feeding mechanism has a large number of parts, is troublesome to manufacture and assemble, and the feeding mechanism is provided at the rear part of the upper shaft cylinder, so the overall length of the writing instrument becomes long, When trying to form compactly, only a short refill could be used, and a long refill could not be used.
[0004]
In order to make the whole compact, a cylindrical cam body having an outer cam is attached to a tip, and a cam bar, a rotating cam, a spring, etc. are accommodated in the cam body, the tip is attached to the tip of a shaft cylinder, A writing instrument has also been proposed in which an operating portion slidably provided on the side surface of the shaft tube is connected to the cam bar so that the refill can be projected and retracted in a side knock manner (see, for example, Patent Document 1). However, such a writing instrument has a large number of parts like the conventional one and cannot be obtained economically.
[0005]
[Patent Literature]
Japanese Utility Model Publication No. 6-32394 (request for utility model registration, drawing)
[0006]
[Problems to be solved by the invention]
The problem to be solved by the present invention is that, in a writing instrument in which the refill is made to appear and retract by the rotating cam type feeding mechanism, the structure is simple and compact, the number of parts is small, it can be obtained economically, and a long refill is also used. It is to provide a writing instrument that can.
[0007]
Furthermore, the problem to be solved by the present invention is to provide a writing instrument that can hold the tip of the writing in an airtight manner when the refill is stored.
[0008]
[Means for Solving the Problems]
According to the present invention, the rotary cam provided in the shaft cylinder so as to be movable in the axial direction and rotatably, the outer cam for restricting the movement of the rotary cam in the axial direction and rotating the rotary cam, and the rotation A writing instrument in which a refill is moved to a writing position and a storage position by a rotating cam type feeding mechanism including a guide cam for rotating the rotating cam when the cam is detached from the outer cam. The rotating cam is inserted into the outer cam, the refill is attached to the rotating cam, and the guide cam is integrally formed at the rear end of the tip connected to the shaft tube so as to be positioned in front of the rotating cam. The writing instrument characterized by having performed is provided, and the said subject is solved.
[0009]
According to the present invention, in the writing instrument, an air tight sleeve having a lid is provided in the tip to surround the writing tip of the refill, and the lid is opened when the refill moves to a writing position, The writing instrument is proposed in which the lid is closed when the refill moves to the storage position to hold the writing tip in an airtight manner, thereby solving the problem.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of the present invention, in which a writing instrument (2) having various refills, for example, a marker, a water-based ink pen, a water-based ballpoint pen, a correction pen, a fluorescent ben and other refills (1) containing a writing component that easily evaporates. The tip (5) which has a through-hole (4) is connected with the front-end | tip of the axial cylinder (3) which accommodated this refill (1).
[0011]
1 and 2, a step portion (6) is formed in the shaft tube (3), and a spring (8) is provided between the step portion (6) and the shoulder portion (7) of the refill (1). ) To bias the refill (1) rearward, and an outer cam (9) constituting a rotary cam type feeding mechanism is formed in front of the stepped portion (6). As is well known, the outer cam (9) has alternating deep cam grooves (11a) and shallow cam grooves (11b) extending in the axial direction so as to restrict the axial movement of the rotating cam (10). A crest-shaped cam surface (12) for rotating the rotating cam (10) is formed at the front end, and is integrally provided on the inner surface of the front portion of the shaft tube (3). You may make it form in a substantially cylindrical body and fix it in the said shaft cylinder (illustration omitted).
[0012]
The rotating cam (10) is provided so as to be axially movable and rotatable within the shaft cylinder, and is formed in a substantially cylindrical shape having an outer diameter that can be inserted into the outer cam (9). It has a connection part (14) fitted to the neck part (13) of the refill (1). On the outer periphery of the rotating cam (10), there is provided a projection (15) that engages with the cam grooves (11a), (11b) of the outer cam (9), and at the rear end of the projection (15), An inclined cam surface (16) that engages with the cam surface (12) of the outer cam (9) is provided. Further, a front end cam surface (18) that engages with the guide cam (17) is provided at the front portion of the rotating cam (10).
[0013]
The connecting portion (14) of the rotating cam (10) is formed to be elastically expandable so that it can be inserted from the writing tip (19) side of the refill (1) to the neck portion (13), up to the neck portion (13). When inserted, the front end edge (21) engages with the flange (20) formed in the refill (1), and the base end edge (23) engages with the inner shoulder (22). The rotary cam (10) is loosely fitted to the refill so that it can be rotated in a state of being fitted to the refill. However, the rotary cam (10) may be fixedly provided on the refill or formed integrally with the refill.
[0014]
As shown in FIG. 4, a guide cam (17) is integrally formed at the rear end of the tip (5) so as to be positioned in front of the rotary cam (10). When the protrusion (15) of the rotating cam (10) is disengaged from the cam grooves (11a) and (11b) of the outer cam, the guide cam (17) is connected to the front end cam surface (18) of the rotating cam (10). And has a mountain-shaped cam surface (24) to rotate the rotating cam (10). The cam surface (24) needs to be fixedly positioned at a portion facing the cam surface (12) of the outer cam (9) so as to rotate the rotating cam (10) by a predetermined angle. Therefore, in the drawing, an engagement recess (26) is formed on the outer periphery of the tip (5) so as to engage with an annular locking projection (25) formed in the shaft cylinder, and the shaft formed on the shaft cylinder. Protrusions (28) that engage with the locking holes (27) in the direction and are connected to the shaft cylinder (3) in a non-rotating state by engaging them, but they are press-fitted, bonded, locking pins, etc. It can also connect in the state positioned by the suitable connection structure.
[0015]
With the above configuration, when the refill (1) protruding from the rear end of the shaft tube (3) at the storage position is knocked forward directly or via an appropriate operation piece (not shown) attached to the rear portion of the refill, The protrusion (15) of the cam (10) is disengaged from the deep cam groove (11a) of the outer cam (9), and the rotating cam is rotated against the guide cam (17). When the knock is stopped, the protrusion (15) Engaging with the shallow cam groove (11b) of the outer cam (9), the refill (1) is held at the writing position where the writing tip (19) protrudes from the through hole (4). When the refill (1) is knocked in this state, the rotating cam (10) rotates as described above, and when the knocking is stopped, the protrusion (15) engages with the deep cam groove (11a) of the outer cam (9). The refill (1) then moves back to the storage position. These basic operations are the same as those of a known rotary cam type feeding mechanism.
[0016]
In the case where the writing component of the refill is a non-evaporable ballpoint pen or mechanical pencil, the above configuration may be used. However, in the case of evaporating, an air tight sleeve (19) surrounds the writing tip (19) of the refill in the tip (5). 29) is preferably provided. The air tight sleeve (29) has a lid (30) at the front, the lid (30) is opened when the refill (1) moves to the writing position, and the lid (30) opens when moved to the storage position. An appropriate configuration may be employed in which the body (30) is closed to hold the writing tip (19) in an airtight manner.
[0017]
As a mechanism for opening and closing the lid of the air tight sleeve, an appropriate spring member or the like can be provided (not shown), but in the embodiment shown in the figure, the refill (1) is moved to the writing position. When the air tight sleeve (29) is moved to the forward position and the refill (1) is moved to the retracted position when the refill (1) is moved to the retracted position, the air tight sleeve (29) is movable back and forth. Thus, the lid (30) is opened and closed.
[0018]
That is, as shown in FIGS. 5 and 6, the air tight sleeve (29) is made of a plastic material, and the guide protrusion (31) provided on the outer surface is inserted into the guide groove (32) of the tip (5). The inner surface has a fitting portion (34) that can be engaged with a locking portion (33) formed in the refill (1). The fitting portion (34) is hermetically fitted (engaged) with the locking portion (33) when the refill (1) is in the stowed position (FIG. 7A), thereby the refill. When (1) moves to the writing position, the air tight sleeve (29) also moves as the refill moves. A stopper (36) is provided at the rear end of the air tight sleeve (29) so as to contact the shoulder (35) of the tip (5), so that the shoulder (35) as shown in FIG. ) Stops when the air tight sleeve (29) advances to the position where the stopper (36) hits, and when the refill is further advanced, the fitting portion (34) and the locking portion (33) are engaged (engaged). ) Is released, and the air tight sleeve (29) is held in the advanced position.
[0019]
On the other hand, the lid (30) is provided so as to be swingable by an integral hinge (38) at the base end of the inclined opening edge (37) of the sleeve, and a pressing rib (39) is formed on the back surface. The tip (5) is provided with a sliding surface (40) on which the pressing rib (39) slides and a window hole (41) into which the pressing rib (39) is fitted. When the air tight sleeve (29) is in the retracted position, the pressing rib (39) is in sliding contact with the sliding surface (40), and the lid (30) is pressed against the inclined opening edge (37). Although the inclined opening edge (37) is closed (FIG. 7 (A)), when the air tight sleeve (29) is moved to the advanced position as described above, the pressing rib (39) is moved into the window hole (41). When inserted, the lid (30) swings (FIG. 7 (C)), the inclined opening edge (37) is opened and the writing tip (19) of the refill (1) is passed through the tip (5). It can project outward from the hole (4) (FIG. 8A). When the rotating cam (10) rotates as described above (FIG. 8 (B)) and the refill (1) is held at the writing position, writing can be performed as shown in FIG. 8 (C).
[0020]
When the refill (1) is knocked and retracted from the writing position to the storage position, the locking portion (33) is fitted (engaged) with the fitting portion (34) during the movement (FIG. 7C). ), The air tight sleeve (29) returns from the advanced position to the retracted position as the refill (1) moves. At that time, the pressing rib (39) comes out of the window hole (41), slides on the sliding surface (40) (FIG. 7B), and the lid (30) 39), the writing tip (19) is kept airtight (FIG. 7 (A)).
[0021]
【The invention's effect】
The present invention is configured as described above, and the guide cam for rotating the rotary cam is integrally formed at the rear portion of the tip. Therefore, the number of parts constituting the rotary cam type feeding mechanism can be reduced, and the configuration is simple. Moreover, since the above mechanism is incorporated in the front part of the shaft tube, the entire writing instrument can be formed compactly even if a long refill is used. In addition, by incorporating an air tight sleeve in the tip, even a refill containing an evaporable writing component can be used for a long time without drying the writing tip.
[Brief description of the drawings]
FIG. 1 is a partially omitted sectional view showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a shaft cylinder.
3A is a front view, FIG. 3B is a side view, and FIG. 3C is a cross-sectional view.
4A and 4B show a tip tool, in which FIG. 4A is a cross-sectional view, and FIG.
FIG. 5 is a perspective view of an air tight sleeve.
FIG. 6 is a partial exploded cross-sectional view.
FIGS. 7A to 7C are explanatory diagrams showing operations. FIGS.
8A to 8C are explanatory diagrams of the operation following FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Refill 3 ... Shaft cylinder 5 ... Tip 9 ... Outer cam
10 ... Rotating cam
17 ... Guide cam
19… Writing tip
29 ... Air tight sleeve
30 ... lid
37 ... Inclined opening edge
39 ... Pressing rib
41 ... Window hole

Claims (2)

軸筒内に軸方向に移動可能にかつ回転可能に設けた回転カムと、該回転カムの軸方向への移動を規制しかつ回転カムを回転させる外カムと、上記回転カムが外カムから外れたとき該回転カムを回転させる案内カムを含む回転カム式繰出機構によりリフィールを筆記位置と収納位置に移動させるようにした筆記具において、上記外カムを軸筒の前部内面に形成し、該外カム内に回転カムを挿入し該回転カムにリフィールを取り付け、該軸筒に連結した先具の後端に上記回転カムの前方に位置するよう案内カムを一体的に形成し、上記先具内には、上記リフィールの筆記先端を取り囲むよう蓋体を有するエアタイトスリーブが設けられ、該リフィールが筆記位置に移動するとき上記蓋体を開放し、該リフィールが収納位置に移動するとき該蓋体を閉鎖して上記筆記先端を気密的に保持するようにし、上記エアタイトスリーブは、上記リフィールが筆記位置に移動する際に前進位置に移動し、該リフィールが収納位置に移動する際後退位置に移動するよう軸方向に移動可能に設けられ、上記蓋体の背面に押圧リブを形成し、上記先具に上記エアタイトスリーブが後退位置に移動するとき上記蓋体を押圧するよう該押圧リブが摺動する摺動面を形成すると共に上記エアタイトスリーブが前進位置に移動するとき上記蓋体を嵌入するよう該押圧リブが嵌入する窓孔を形成したことを特徴とする筆記具。A rotating cam that is axially movable and rotatable in the shaft cylinder, an outer cam that restricts the movement of the rotating cam in the axial direction and rotates the rotating cam, and the rotating cam is disengaged from the outer cam. In the writing instrument in which the refill is moved to the writing position and the storage position by a rotating cam type feeding mechanism including a guide cam that rotates the rotating cam, the outer cam is formed on the inner surface of the front portion of the shaft cylinder, A rotating cam is inserted into the cam, a refill is attached to the rotating cam, and a guide cam is integrally formed at the rear end of the tip connected to the shaft tube so as to be positioned in front of the rotating cam . Is provided with an air tight sleeve having a lid so as to surround the writing tip of the refill, the lid is opened when the refill moves to the writing position, and the lid is opened when the refill moves to the storage position. The air tight sleeve moves to the forward position when the refill moves to the writing position, and moves to the retracted position when the refill moves to the storage position. The pressure rib is formed so as to be movable in the axial direction, and a pressure rib is formed on the back surface of the lid, and the pressure rib slides so as to press the lid when the air tight sleeve moves to the retracted position on the tip. A writing instrument, wherein a sliding hole is formed and a window hole into which the pressing rib is fitted is formed so that the lid is fitted when the air tight sleeve moves to a forward position . 上記リフィールは首部を有し、上記回転カムには該首部に嵌着するよう連結部が設けられている請求項1に記載の筆記具。 The writing instrument according to claim 1, wherein the refill has a neck portion, and the rotating cam is provided with a connecting portion so as to be fitted to the neck portion .
JP2002336246A 2002-07-25 2002-11-20 Writing instrument Expired - Lifetime JP3793968B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2002336246A JP3793968B2 (en) 2002-11-20 2002-11-20 Writing instrument
TW092115748A TWI224056B (en) 2002-07-25 2003-06-10 Writing instrument
US10/612,564 US6866436B2 (en) 2002-07-25 2003-07-02 Writing instrument
KR10-2003-0045269A KR100503569B1 (en) 2002-07-25 2003-07-04 Writing instrument
CNB031328911A CN1251887C (en) 2002-07-25 2003-07-25 Writing appliance
DE2003605415 DE60305415T2 (en) 2002-11-20 2003-10-22 writing implement
EP20030024402 EP1422075B1 (en) 2002-11-20 2003-10-22 Writing instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002336246A JP3793968B2 (en) 2002-11-20 2002-11-20 Writing instrument

Publications (2)

Publication Number Publication Date
JP2004167830A JP2004167830A (en) 2004-06-17
JP3793968B2 true JP3793968B2 (en) 2006-07-05

Family

ID=32212084

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002336246A Expired - Lifetime JP3793968B2 (en) 2002-07-25 2002-11-20 Writing instrument

Country Status (3)

Country Link
EP (1) EP1422075B1 (en)
JP (1) JP3793968B2 (en)
DE (1) DE60305415T2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4778324B2 (en) * 2006-02-06 2011-09-21 ミクロ株式会社 Air tight writing instrument
FR2907371B1 (en) * 2006-10-18 2009-01-16 Bic Soc WRITING INSTRUMENT WITHOUT CAP
US8393814B2 (en) * 2009-01-30 2013-03-12 Sanford, L.P. Retractable instrument having a two stage protraction/retraction sequence
FR2986467B1 (en) * 2012-02-03 2014-02-28 Bic Soc WRITING INSTRUMENT WITH RETRACTABLE POINT PROTECTIVE SLEEVE
JP6024324B2 (en) * 2012-09-13 2016-11-16 コクヨ株式会社 Writing instrument
JP2015100987A (en) 2013-11-25 2015-06-04 ミクロ株式会社 Rotary writing instrument
CN112477471B (en) * 2019-09-12 2024-02-06 东莞司贸文教赠品有限公司 Automatic flip pen of hand push core

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1400077A (en) * 1963-11-27 1965-05-21 Pilot Pen Co Ltd Retractable fountain pen closure device
US5915867A (en) * 1995-05-26 1999-06-29 Ancos Co., Ltd. Capless writing tool

Also Published As

Publication number Publication date
EP1422075A1 (en) 2004-05-26
EP1422075B1 (en) 2006-05-24
DE60305415D1 (en) 2006-06-29
JP2004167830A (en) 2004-06-17
DE60305415T2 (en) 2006-10-19

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