JP3878296B2

JP3878296B2 - Writing instrument

Info

Publication number: JP3878296B2
Application number: JP25191497A
Authority: JP
Inventors: 松平外山
Original assignee: Zebra Co Ltd
Current assignee: Zebra Co Ltd
Priority date: 1997-09-17
Filing date: 1997-09-17
Publication date: 2007-02-07
Anticipated expiration: 2017-09-17
Also published as: JPH1178358A

Description

【０００１】
【発明が属する技術分野】
本発明は、ボールペン、マーカーペン、塗布具等の筆記具に係り、特に商品としての装飾性や機能性を図る目的でキャップ又は軸筒を成形する合成樹脂材料と同色又は異色の合成樹脂材料からなる駒体を、又はゴムやエラストマー等の異質材料からなる駒体を、キャップ又は軸筒の尾端に固着備える取付構造に関する。
【０００２】
【従来の技術】
近年、インク切れを起こす事なく、滑らかな筆記を可能とする書き味が優れている等の機能性に加えて、外観的見栄えを高める装飾性等の美的効果を図る傾向が急速に浸透しつつある。その美的効果を図る手段として、キャップ又は軸筒を透明にしたり、或いは透明なキャップや軸筒に成形色を変えた異色（色付き）の合成樹脂材料からなる駒体を具備してなる筆記具が数多く提案されてきている。
因みに、駒体の色は一般的にインキ色と同色にして、多数本ある筆記具の中から使用するインキ色の筆記具を選択する場合に駒体の色にて見分けられるようにしてなる。
【０００３】
【発明が解決しようとする課題】
ところで、従来ではキャップ又は軸筒の尾端側に対する駒体の取り付けは、キャップ又は軸筒とは別成形にて成形された後に、尾端に組み立てにより固着される方法が主流であった（例えば、実開昭63−80177 号公報参照）。従って、従来においては別成形されたキャップ又は軸筒の尾端に対する駒体の組付け作業が必要となることから、手間が掛かり生産能率が悪いばかりか、その分、コスト高になる等の不具合があった。
【０００４】
又、従来では駒体を組み付けにより後からキャップ又は軸筒の尾端側に嵌め込み固着することから、キャップ又は軸筒の尾端側に同時成形により形成される傘状の係止段を有する取付部に対する駒体（斯る公報記載においては蓋栓と称している）の取付状態において、僅かではあるが材料間に隙間ができる等の整合性（適合性）が無くなり、そのために、駒体の取付状態の安定性が悪く、使用者に対する違和感を与えるばかりか、床面等に落下した際の衝撃等により駒体が脱落する等の虞れがあった。即ち、キャップ又は軸筒、そして駒体を作る例えば合成樹脂材料等は金型内に射出充填された後に固化されるその固化過程において僅かではあるが、肉が厚い肉厚部分と肉が薄い肉薄部分においては固化速度差が発生し、その速度差による寸法上のバラ付きが起き得るものである。その結果、どうしても別成形されたキャップ又は軸筒と駒体との材料間には前述したように取付状態において寸法誤差による隙間が僅かではあるができやすくなるものである。
【０００５】
本発明はこの様な従来事情に鑑みてなされたもので、その目的とする処は、キャップ又は軸筒の尾端側に対する駒体の取付構造において、材料間の整合性による密着が図られ、しかも、互いに嵌合掛止し合う嵌合掛止構造にて駒体をキャップ又は軸筒の尾端側に強靭な取付構造にて固着具備し得るように改良を加えた筆記具を低コストにて提供することにある。
【０００６】
【課題を達成するための手段】
課題を達成するために本発明は、キャップ又は軸筒の尾端側に駒体を備える筆記具に於いて、駒体を二色成形又はインサート成形の要領でキャップ又は軸筒の尾端側に同時成形してなり、キャップ又は軸筒の尾端側と駒体とには互いに嵌合掛止し合う嵌合掛止構造を設けてなる事を要旨とするものであり、且つ前記駒体又はキャップにはクリップが同時成形され、更に駒体にはキャップ内に同軸上に内設される内キャップが同時成形され、前述した嵌合掛止構造が、キャップ又は軸筒の尾端側における少なくとも相対峙する外周両面に、尾端縁から軸方向に他の部分の表面より略平坦状に又は溝状に一段程低くした取付部を設けると共に、該取付部の表面には少なくとも他の部分の表面高さに相当する突出高さで且つ適宜の突出形状を呈する掛止凸部を１乃至数カ所に設ける一方で、前記外周両面線上に位置する駒体の円周縁から、前記取付部に密着適合する突出形状の腕片部を設けると共に、該腕片部には前記掛止凸部に密着適合する掛止窓を１乃至数カ所に設けてなる事を要旨とする。
【０００７】
斯る技術的手段によれば、駒体は二色成形又はインサート成形の要領でキャップ又は軸筒の尾端側に同時成形される。それにより、駒体はキャップ又は軸筒の尾端側に対して材料間の整合性による密着が図られた一体化構造にて、尚且つ互いに嵌合掛止せしめた嵌合掛止構造にて固着具備される。
その上、前述したように、二色成形又はインサート成形の要領で駒体がキャップ又は軸筒の尾端側に同時成形される際に、該尾端側に同時成形される取付部に対して同じく同時成形される駒体の腕片部が密着適合され、且つ取付部の１乃至数カ所の掛止凸部に対して腕片部の１乃至数カ所の掛止窓が密着適合される。それにより、駒体は材料間の整合性による密着が図られた一体化構造に加えてキャップ又は軸筒の尾端側の掛止凸部に対する掛止窓の嵌合掛止構造によりキャップ又は軸筒の尾端側に固着具備される。
そして、取付部の掛止凸部の突出形状を例えば文字やマーク等の表示形状にて数カ所に形成する一方、腕片部の掛止窓の開口形状も同じく文字やマーク等の表示形状にて前記掛止凸部の突出位置に対応させた数カ所に形成することで、各掛止凸部と各掛止窓とが互いに嵌合掛止し合い、その掛止状態が文字やマーク等の表示部として駒体の腕片部の表面に現出される。
【０００８】
又、前述した嵌合掛止構造が、キャップ又は軸筒の尾端側における少なくとも相対峙する外周両面に、その尾端縁から軸方向に溝状の取付部を設けると共に、該取付部の終端には内部に向けて開口させた掛止窓又はその溝幅より幅広状の掛止凹部を設ける一方で、前記外周両面線上に位置する駒体の円周縁から、前記取付部に密着適合する突出形状を呈する腕片部を設けると共に、該腕片部の突端には前記掛止窓又は掛止凹部に密着適合する掛止部を設けてなる事を要旨とする。斯る技術的手段によれば、前述したように、二色成形又はインサート成形の要領で駒体がキャップ又は軸筒の尾端側に同時成形される際に、該尾端側に同時成形される取付部に対して同じく同時成形される駒体の腕片部が密着適合され、且つ取付部の終端の掛止窓又は掛止凹部に対して腕片部の突端の掛止部が密着適合される。それにより、駒体は材料間の整合性による密着が図られた一体化構造に加えてキャップ又は軸筒の尾端側の掛止窓又は掛止凹部に対する掛止部の嵌合掛止構造によりキャップ又は軸筒の尾端側に固着具備される。
【０００９】
又、前述した嵌合掛止構造が、キャップ又は軸筒の尾端側における少なくとも相対峙する外周両面に、その尾端縁から軸方向に適宜の開口幅の開口部を設けると共に、該開口部の開口終端にはその開口幅より幅広状の掛止窓を設ける一方で、前記外周両面線上に位置する駒体の円周縁から、前記開口部に密着適合する突出形状の腕片部を設けると共に、該腕片部の突端には前記掛止窓に密着適合する掛止部を設けてなる事を要旨とする。
斯る技術的手段によれば、前述したように、二色成形又はインサート成形の要領で駒体がキャップ又は軸筒の尾端側に同時成形される際に、該尾端側に同時成形される開口部に対して同じく同時成形される駒体の腕片部が密着適合され、且つ開口部の開口終端の掛止窓に対して掛止片部の突端の掛止部が密着適合される。それにより、駒体は材料間の整合性による密着が図られた一体化構造に加えてキャップ又は軸筒の尾端側の掛止窓又は掛止凹部に対する掛止部の嵌合掛止構造によりキャップ又は軸筒の尾端側に固着具備される。
【００１０】
【発明の実施の形態】
本発明の実施の具体例を図面に基づいて説明する。
図１乃至図５は本発明筆記具のキャップ１の一例を示し、キャップ１と、このキャップ１の尾端側に具備する駒体２とを二色成形又はインサート成形の要領で同時成形する。そして、この同時成形時にキャップ１の尾端側における少なくとも相対峙する外周両面と、この外周両面線上に位置する駒体２の円周縁とには互いに嵌合掛止し合う嵌合掛止構造を設けて、同時成形により得られる材料間の整合性による密着が図られた一体化構造と、互いに嵌合掛止し合う嵌合掛止構造とによりキャップ１の尾端側に対して駒体２が二色成形又はインサート成形の要領で同時成形されて固着具備されるようにしてなる。
【００１１】
キャップ１は、透明又は種々の着色が施された所要の合成樹脂材料、例えば透明な合成樹脂材料にて前後端を開口させた円筒筒状に成形され、その尾端側における相対峙する外周両面に、嵌合掛止構造の後述する取付部３が成形される。
【００１２】
取付部３は、嵌合掛止構造の後述する腕片部４との整合性による密着が図られることで、キャップ１の尾端側に対する駒体２の固着強度を図る役目を成すもので、キャップ１の尾端開口縁から前端開口方向に向けた軸方向に他の部分の表面（キャップ１の外周表面）より適宜の幅にて一段程低くした略平坦状に成形され、その表面に掛止凸部５を突出備える。
【００１３】
掛止凸部５は、嵌合掛止構造の後述する掛止窓６との嵌合掛止によりキャップ１の尾端側に対する駒体２の固着強度を図る役目を成すもので、前述した取付部３の表面における中央部位に、他の部分の表面高さに相当する突出高さにて略円柱形状に成形される。
【００１４】
駒体２は、キャップ１を成形する合成樹脂材料と異質の硬質ゴムやエラストマー等の異質材料、或いは異色の合成樹脂材料、例えばインク色の合成樹脂材料にて、キャップ１の尾端開口部を閉蓋する尾栓の如く該尾端側に二色成形又はインサート成形の要領で同時成形されて固着具備されるものである。そして、キャップ１の尾端側における前述した両取付部３に対応位置するその円周縁から該取付部３に密着適合する突出形状にて腕片部４が成形されると共に、該腕片部４には前述した掛止凸部５の円周面に密着適合する円形の掛止窓６が成形される。図中７は、腕片部４から円周方向略90゜に位置する駒体２の円周縁からキャップ１の軸方向に向けて同時成形されるクリップであり、図中８は、駒体２の内側軸芯からキャップ１内に向けて同軸状に同時成形される内キャップである。
【００１５】
腕片部４は、その内面側をキャップ１の取付部３に適合させた略平坦状で、その表面側をキャップ１の円弧表面と面一状に適合させた円弧状の断面形状にて駒体２の両円周縁から突出成形され、その表裏面に貫通する掛止窓６を開口備える。
【００１６】
掛止窓６は、キャップ１の取付部３の掛止凸部５に対応する前述した腕片部４の中央部位に開口成形され、該取付部３の掛止凸部５に対して密着適合されるようになっている。
【００１７】
而して、以上の如く構成したキャップ１によれば、駒体２は二色成形又はインサート成形の要領でキャップ１の尾端側に同時成形されることで、キャップ１の尾端側に対して材料間の整合性による密着が図られた一体化構造にて固着されると同時に、キャップ１の尾端側に同時成形される取付部３に対して同じく同時成形される駒体２の腕片部４が密着適合され、且つ取付部３の掛止凸部５に対して腕片部４の掛止窓６が密着適合されることで、駒体２は前述した一体化構造に加えてキャップ１の尾端側の掛止凸部５に対する掛止窓６の嵌合掛止構造によりキャップ１の尾端側に確実且つ強靭な取付構造にて固着具備されるものである。それにより、駒体２の取付状態にガタが生じて使用者に違和感を与えることもなく、床面等に落下した際の衝撃等により簡単に脱落する虞れもない。
【００１８】
尚、図６に例示したように、軸筒９の尾端側に前述した取付構造にて駒体２を二色成形又はインサート成形の要領で同時成形せしめて固着するも可能であり、駒体２の軸筒９の尾端側への取付構造においては前述した実施例詳述と基本的に同じ事から同じ構成部分に同じ符号を用いる事でその説明は省略する。そして、この軸筒９の場合においては駒体２を硬質ゴムやエラストマーを用いて二色成形又はインサート成形の要領でその尾端側に同時成形して固着具備することで、軸筒９を床面等に落下させた際の衝撃が硬質ゴムやエラストマーからなる駒体２により緩衝されることになる。つまり、内部に収容されているインクが衝撃によるバックショックにより逆流する等の不具合を防止し得る効果等が期待できるものである。
図中10は、駒体２に同時成形された受け部であり、インク収容管11（通称、替芯等と称されている）を軸筒９内に装填する事でその後端開口部が受け部10に当接され、インクの減少（消耗）に伴うインク収容管11内の空気交換が成されるようになっている。
【００１９】
図７乃至図８は本発明筆記具のキャップの他例を示し、クリップ７並びに内キャップ８をキャップ１と同時成形すると共に、取付部３に対する掛止凸部５の突出個数とその突出形状、そして腕片部４に対する掛止窓６の開口個数とその開口形状を変えてなる。斯る実施例においてはクリップ７並びに内キャップ８を一体に有するキャップ１に対して前述した実施例詳述の取付部３を一回り程大きめに形成すると共にその表面に、軸方向に並列的に例えば文字やマーク等の表示形状にて突出させた掛止凸部5-1 …を数カ所に設ける一方で、駒体２の腕片部４も同じく取付部３に密着適合し得るように一回りほど大きめに形成すると共に、文字やマーク等の表示形状を呈する各掛止凸部5-1 …に密着適合する開口形状にて掛止窓6-1 …を同一間隔にて並列的に設けて、取付部３の各掛止凸部5-1 …に対して腕片部４の各掛止窓6-1 …が密着適合されることで（図８参照）、駒体２がキャップ１の尾端側に確実且つ強靭な取付構造にて固着具備されるようにしてなる。そして、各掛止凸部5-1 …と各掛止窓6-1 …との掛止状態が文字やマーク等の表示部12として駒体２の腕片部４の表面に現出されるようにしてなる（図７参照）。
【００２０】
尚、斯る実施例における駒体２並びにその腕片部４をエラストマーを用いて同時成形せしめる。斯様のようにエラストマーを用いる事で、該エラストマーが有する滑り止め効果により、キャップ１の脱着が容易になる。つまり、キャップ１の装着並びに取り外し時に、駒体２の腕片部４に指を掛けた（添えた）状態にてキャップ１を握る事で、エラストマーからなる腕片部４が滑り止め効果を発揮し、キャップ１の脱着が容易になる。
又、斯る実施例におけるキャップ１においてはその後端側に成形される取付部３の表面形状をキャップ１の外周表面に対応させた円弧形状に形成する。つまり、取付部３をキャップ１の尾端開口縁からその前端開口方向に向けて断面円弧形状に一段程低くした溝状に成形せしめて、この円弧形状の表面に文字やマーク等の表示形状を成す各掛止凸部5-1 …が、キャップ１の外周表面の表面高さに相当する突出高さにて軸方向に並列的に成形されるようにすると良い。この場合、駒体２の腕片部４の断面形状も取付部３に密着適合する断面円弧形状にて突出成形せしめて、取付部３の各掛止凸部5-1 …に密着適合する開口形状の各掛止窓6-1 …が開口成形されるようにするものである。
【００２１】
図９乃至図13は本発明筆記具のキャップ1-1 の更なる他例を示し、斯る実施例においてはキャップ1-1 の尾端側における相対峙する外周両面に、その尾端開口縁から軸方向に溝状の取付部13を設けると共に、該取付部13の溝終端には内部に向けて開口させた掛止窓14を設ける一方で、駒体2-1 の円周縁から、前記取付部13に密着適合する突出形状を呈する腕片部15を設けると共に、該腕片部15の突端には前記掛止窓14に密着適合する掛止部16を設けて、キャップ１の尾端側に駒体2-1 が二色成形又はインサート成形の要領で同時成形されて固着具備されるようにしてなるものである。尚、キャップ1-1 並びに駒体2-1 、そしてクリップ7-1 、内キャップ8-1 の構成形態においては前述した実施例詳述と基本的に同じことからその詳細については説明を省略する。
【００２２】
取付部13は、キャップ1-1 の尾端開口縁から前端開口方向に向けた軸方向に他の部分の表面（キャップ1-1 の外周表面）より適宜の溝幅にて一段程低くした溝状に成形せしめて、駒体2-1 の両円周縁から突出成形される腕片部15が密着適合されるように形成すると共に、その溝終端に掛止窓14を開口備える。
【００２３】
掛止窓14は、取付部13の溝終端に該取付部13の溝幅にて開口成形され、駒体 2-1 の腕片部15の突端に該腕片部15の突出幅と同一幅にて成形される掛止部16が密着適合されることで、キャップ1-1 の尾端開口部を閉蓋する尾栓の如く該尾端側に駒体2-1 が固着具備されるようになっている（図９乃至図10参照）。
【００２４】
而して、以上の如く構成したキャップ1-1 によれば、前述した実施例詳述のように、駒体2-1 は二色成形又はインサート成形の要領でキャップ1-1 の尾端側に同時成形されることで、キャップ1-1 の尾端側に対して材料間の整合性による密着が図られた一体化構造にて固着される。そして、キャップ1-1 の尾端側に同時成形される取付部13に対して同じく同時成形される駒体2-1 の腕片部15が密着適合され、且つ取付部13の掛止窓14に対して腕片部15の掛止部16が密着適合されることで、駒体2-1 は前述した一体化構造に加えてキャップ1-1 の尾端側の掛止窓14に対する掛止部16の嵌合掛止構造によりキャップ1-1 の尾端側に確実且つ強靭な取付構造にて固着具備されるものである。
【００２５】
図14乃至図18は、前述したキャップ1-1 と駒体2-1 との取付構造において、キャップ1-1 の後端側の取付部13の溝終端に該取付部13の溝幅より幅広状の掛止凹部17を成形する一方、駒体2-1 の腕片部15の突端には該腕片部15の突出幅より幅広状の掛止部18を成形して、この掛止部18が前記掛止凹部17に対して密着適合するその嵌合掛止構造によりキャップ1-1 の尾端側に駒体2-1 が確実且つ強靭な取付構造にて固着具備されるようにしてなる他の実施例である。
【００２６】
尚、前述した掛止窓14の開口幅を掛止凹部17と同じように取付部13の溝幅よりも幅広状に形成する一方で、掛止部18も同様に腕片部15の突出幅よりも幅広状に形成して、互いに嵌合掛止し合うようにした取付構造とするも良い。
【００２７】
図19乃至図23は本発明筆記具のキャップ1-2 の更なる他例を示し、斯る実施例においてはキャップ1-2 の尾端側における相対峙する外周両面に、その尾端開口縁から軸方向に適宜の開口幅にて開口する開口部19を設けると共に、該開口部19の開口終端にはその開口幅より幅広状に開口させた掛止窓20を設ける一方で、駒体2-2 の円周縁から、前記開口部19に密着適合する突出形状を呈する腕片部21を設けると共に、該腕片部21の突端には前記掛止窓20に密着適合する掛止部22を設けて、キャップ1-2 の尾端側に駒体2-2 が二色成形又はインサート成形の要領で同時成形されて固着具備されるようにしてなるものである。尚、キャップ1-2 並びに駒体2-2 、そしてクリップ7-2 、内キャップ8-2 の構成形態においては前述した実施例詳述と基本的に同じことからその詳細については説明を省略する。
【００２８】
開口部19は、キャップ1-2 の尾端開口縁から前端開口方向に向けた軸方向に適宜の開口幅にて開口成形せしめて、駒体2-2 の両円周縁から内キャップ8-2 と連設せしめた状態で突出成形される腕片部21が密着適合されるように形成する（図22参照）と共に、その開口終端に掛止窓20を開口備える。
【００２９】
掛止窓20は、開口部19の開口終端に該開口部19の開口幅より幅広状に開口成形され、駒体2-2 の腕片部21の突端に内キャップ8-2 と連設せしめた状態で（図23参照）同じく幅広状に成形される掛止部22が密着適合されることで、キャップ 1-2 の尾端開口部を閉蓋する尾栓の如く該尾端側に駒体2-2 を固着具備するようになっている。
【００３０】
而して、以上の如く構成したキャップ1-2 によれば、前述した実施例詳述のように、駒体2-2 は二色成形又はインサート成形の要領でキャップ1-2 の尾端側に同時成形されることで、キャップ1-2 の尾端側に対して材料間の整合性による密着が図られた一体化構造にて固着される。そして、キャップ1-2 の尾端側に同時成形される開口部19に対して同じく同時成形される駒体2-2 の腕片部21が密着適合され、且つ開口部19の掛止窓20に対して腕片部21の掛止部22が密着適合されることで、駒体2-2 は前述した一体化構造に加えてキャップ1-2 の尾端側の掛止窓20に対する掛止部22の嵌合掛止構造によりキャップ1-2 の尾端側に確実且つ強靭な取付構造にて固着具備されるものである。そして、内キャップ8-2 は駒体2-2 の相対峙する両円周縁から突出成形される腕片部21とその突端の掛止部22に対して連設支持されていることから、仮にキャップ1-2 の装着時においてペン先が衝突する等の負荷応力を繰り返し受けたとしても芯ズレ等を起こす事なくキャップ1-2 内に同軸状に内設されるものである。
【００３１】
【発明の効果】
本発明の筆記具のキャップ又は軸筒は叙上の如く構成してなるから、下記の作用効果を奏する。
（１）駒体を二色成形又はインサート成形の要領でキャップ又は軸筒の尾端側に同時成形してなることから、駒体はキャップ又は軸筒の尾端側に対して材料間の整合性による密着が図られた一体化構造にて固着されると同時にその成形時に互いに嵌合掛止し合う嵌合掛止構造によりしっかりと固着される。それにより、駒体はキャップの尾端側に嵌合掛止構造により強靭な取付構造にて固着具備される。
しかも、二色成形又はインサート成形の要領で駒体がキャップ又は軸筒の尾端側に同時成形される際に、該尾端側に同時成形される取付部に対して同じく同時成形される駒体の腕片部が密着適合され、且つ取付部の１乃至数カ所の掛止凸部に対して腕片部の１乃至数カ所の掛止窓が密着適合される。それにより、駒体は材料間の整合性による密着が図られた一体化構造に加えてキャップ又は軸筒の尾端側の掛止凸部に対する掛止窓の嵌合掛止構造によりキャップ又は軸筒の尾端側にしっかりと固着具備される。
又、前記取付部の掛止凸部の突出形状を例えば文字やマーク等の表示形状に形成する一方、腕片部の掛止窓の開口形状も同じく文字やマーク等の表示形状に形成することで、各掛止凸部と各掛止窓との嵌合掛止状態が文字やマーク等の表示部として駒体の腕片部の表面に現出されることから、商品としての外観的見栄えを高める装飾性等をより一層高めることができる等の効果が期待できる。
【００３３】
（３）二色成形又はインサート成形の要領で駒体がキャップ又は軸筒の尾端側に同時成形される際に、該尾端側に同時成形される取付部に対して同じく同時成形される駒体の腕片部が密着適合され、且つ取付部の終端の掛止窓又は掛止凹部に対して腕片部の突端の掛止部が密着適合される。それにより、駒体は材料間の整合性による密着が図られた一体化構造に加えてキャップ又は軸筒の尾端側の掛止窓又は掛止凹部に対する掛止部の嵌合掛止構造によりキャップ又は軸筒の尾端側に固着具備される。
【００３４】
（４）二色成形又はインサート成形の要領で駒体がキャップ又は軸筒の尾端側に同時成形される際に、該尾端側に同時成形される開口部に対して同じく同時成形される駒体の腕片部が密着適合され、且つ開口部の開口終端の掛止窓に対して掛止片部の突端の掛止部が密着適合される。それにより、駒体は材料間の整合性による密着が図られた一体化構造に加えてキャップ又は軸筒の尾端側の掛止窓又は掛止凹部に対する掛止部の嵌合掛止構造によりキャップ又は軸筒の尾端側に固着具備される。
【００３５】
従って、本発明の筆記具によれば、キャップ又は軸筒の尾端側に対する駒体の取付構造において、二色成形又はインサート成形の要領で同時成形されることで、材料間の整合性による密着が図られた一体化構造にて、尚且つ互いに嵌合掛止し合う嵌合掛止構造、例えばキャップの尾端側の取付部の掛止凸部に対する駒体の腕片部の掛止窓の嵌合掛止構造により駒体をキャップの尾端側に強靭な取付構造にて固着具備し得ることから、従来の筆記具のように駒体の取付状態にガタが生じて使用者に違和感を与えることもなく、床面等に落下した際の衝撃等により簡単に脱落する虞れもない。
【図面の簡単な説明】
【図１】本発明筆記具のキャップの一例を示した縦断面図
【図２】図１のII−II線縦断面図
【図３】図１の III−III 線横断面図
【図４】図１のIV−IV線横断面図
【図５】同キャップ全体を示した斜視図
【図６】軸筒の後端側に駒体を備えた他の実施例を示し、（イ）は縦断面図（ロ）は（イ）のローロ線横断拡大図
【図７】本発明筆記具のキャップの一例を示し、クリップ並びに内キャップを同時成形により備え、且つ掛止凸部の突出形状を文字やマーク等の表示形状とする一方で、該掛止凸部に対して嵌合掛止し合う掛止窓の開口形状を同じく文字やマーク等の表示形状として二色成形の要領で同時成形された正面図で、一部を切欠して示す
【図８】図７のVIII−VIII線縦断面図
【図９】請求項１乃至請求項３、請求項５に係る本発明筆記具のキャップの一例を示した縦断面図
【図10】図９のＸ−Ｘ線縦断面図
【図11】図10のXI−XI線横断面図
【図12】図10の XII−XII 線横断面図
【図13】同キャップ全体を示した斜視図
【図14】本発明筆記具のキャップの他の実施例を示した縦断面図
【図15】図14のXV−XV線縦断面図
【図16】図14の XVI−XVI 線横断面図
【図17】図14のXVII−XVII線横断面図
【図18】同キャップ全体を示した斜視図
【図19】本発明筆記具のキャップの他の実施例を示した縦断面図
【図20】図19のXX−XX線縦断面図
【図21】図19の XXI−XXI 線横断面図
【図22】図19のXXII−XXII線横断面図
【図23】同キャップ全体を示した斜視図
【符号の説明】
１，1-1 ，1-2 …キャップ２，2-1 ，2-2 …駒体
３，13…取付部４，15，21…腕片部
５，5-1 …掛止凸部６，6-1 ，14，20…掛止窓
７，7-1 ，7-2 …クリップ８，8-1 ，8-2 …内キャップ
９…軸筒 16，18，22…掛止部
17…掛止凹部 19…開口部[0001]
[Technical field to which the invention belongs]
The present invention relates to a writing instrument such as a ballpoint pen, a marker pen, and an applicator, and is composed of a synthetic resin material having the same or different color as a synthetic resin material for forming a cap or a shaft tube, in particular, for the purpose of improving decorativeness and functionality as a product. The present invention relates to a mounting structure in which a frame body or a frame body made of a different material such as rubber or elastomer is fixed to a cap or a tail end of a shaft tube.
[0002]
[Prior art]
In recent years, in addition to functionality such as excellent writing that enables smooth writing without running out of ink, the tendency to seek aesthetic effects such as decorativeness that enhances the appearance of the appearance is rapidly penetrating is there. As a means to achieve the aesthetic effect, there are many writing instruments having a cap or a shaft tube made of transparent or a transparent cap or shaft tube made of a synthetic resin material of different colors (colored) whose molding color is changed. Has been proposed.
Incidentally, the color of the frame is generally the same as the color of the ink so that the color of the frame can be discriminated when selecting a writing tool to be used from among a large number of writing tools.
[0003]
[Problems to be solved by the invention]
By the way, in the past, the attachment of the frame body to the tail end side of the cap or the shaft tube has been mainly performed by a method in which it is formed by molding separately from the cap or the shaft tube and then fixed to the tail end by assembly (for example, (See Japanese Utility Model Publication No. 63-80177). Therefore, in the past, it was necessary to assemble the frame body to the tail end of the cap or the shaft cylinder separately formed, so that it took time and trouble, the production efficiency was bad, and the cost was increased accordingly. was there.
[0004]
In addition, conventionally, the frame body is assembled and fixed to the tail end side of the cap or the shaft tube later by assembling, so that it has an umbrella-shaped locking step formed by simultaneous molding on the tail end side of the cap or shaft tube. In the mounting state of the piece body (referred to as a lid plug in such a gazette), there is little consistency (compatibility) such as a gap between the materials. The stability of the mounting state is poor, which not only gives the user a sense of incongruity, but may cause the frame to fall off due to an impact or the like when dropped on the floor surface. That is, the cap or the shaft cylinder and the piece of the synthetic resin material, for example, which forms the piece, are slightly solidified in the solidification process after being injected and filled in the mold, but the thick part and the thin part are thin. A solidification speed difference occurs in the portion, and dimensional variations due to the speed difference can occur. As a result, a gap due to a dimensional error in the attached state is easily formed between the materials of the cap or the shaft cylinder and the frame body, which are separately formed, as described above, although they are slightly attached.
[0005]
The present invention has been made in view of such a conventional situation, and the intended treatment is to achieve close contact due to the consistency between the materials in the structure of mounting the piece to the tail end side of the cap or the shaft tube, Moreover, the writing instrument is improved at low cost so that the frame body can be fixedly attached to the tail end side of the cap or the shaft tube with a strong mounting structure with a fitting locking structure that engages and locks each other. It is to provide.
[0006]
[Means for achieving the object]
  In order to achieve the object, the present invention provides a writing instrument having a piece on the tail end side of the cap or the shaft tube, and the piece body is simultaneously formed on the tail end side of the cap or the shaft tube in the manner of two-color molding or insert molding. It is formed and has a gist that is provided with a fitting latching structure for fitting and latching each other on the tail end side of the cap or the shaft tube and the piece, and the piece or cap A clip is simultaneously molded, and an inner cap that is coaxially installed in the cap is molded simultaneously.The above-described fitting latching structure has one step in a substantially flat shape or groove shape from the surface of the other part in the axial direction from the tail end edge on at least the outer peripheral surfaces that face each other at the tail end side of the cap or the shaft tube. While providing a lowered mounting portion, the surface of the mounting portion is provided with one or several retaining projections having a protruding height corresponding to the surface height of at least another portion and an appropriate protruding shape, A projecting arm piece that fits closely to the mounting portion is provided from the circumferential edge of the piece located on the outer peripheral double-sided line, and a latching window that fits closely to the latching convex portion is provided on the arm piece. The gist is that it is provided in one or several places.
[0007]
According to such technical means, the frame is simultaneously formed on the tail end side of the cap or the shaft tube in the manner of two-color molding or insert molding. As a result, the frame body has an integrated structure in which close contact is achieved due to the consistency between the materials on the cap or the tail end side of the shaft tube, and also has a fitting latching structure in which the mating latching is performed. Fixed.
Moreover,As described above, when the frame body is simultaneously molded on the tail end side of the cap or the shaft cylinder in the manner of two-color molding or insert molding, the same simultaneous molding is performed on the mounting portion that is simultaneously molded on the tail end side. The arm piece portions of the piece to be fitted are closely fitted, and one or several latching windows of the arm piece portion are tightly fitted to one or several latching convex portions of the mounting portion. As a result, in addition to the integrated structure in which the pieces are closely adhered to each other due to the consistency between the materials, the cap or shaft is fitted by the latching structure of the latching window to the latching convex part on the tail end side of the cap or the shaft tube. Fixed to the tail end of the tube.
  And the protruding shape of the latching convex part of the mounting part is formed in several places with display shapes such as letters and marks, etc., while the opening shape of the latching window of the arm piece part is also in the display shape of letters and marks etc. By forming in several places corresponding to the protruding position of the latching convex part, each latching convex part and each latching window are fitted and latched together, and the latched state is displayed as characters, marks, etc. It appears on the surface of the arm piece of the piece as a part.
[0008]
Further, the above-described fitting latching structure is provided with a groove-shaped mounting portion in the axial direction from the tail end edge on at least the outer peripheral opposite surfaces on the tail end side of the cap or the shaft tube, and the end of the mounting portion. Is provided with a latching window that opens toward the inside or a latching recess that is wider than the groove width, and a protrusion that fits closely to the mounting portion from the circumferential edge of the frame located on the outer circumferential double-sided line. The gist of the invention is that an arm piece portion having a shape is provided, and a hook portion that closely fits the hook window or the hook recess is provided at the projecting end of the arm piece portion. According to such technical means, as described above, when the piece body is simultaneously formed on the tail end side of the cap or the shaft tube in the manner of two-color molding or insert molding, it is simultaneously formed on the tail end side. The arm piece part of the piece that is molded at the same time is closely fitted to the mounting part to be attached, and the latching part of the protruding end of the arm piece is closely fitted to the latching window or the latching recess at the end of the mounting part. Is done. As a result, in addition to the integrated structure in which the pieces are closely adhered to each other due to the consistency between the materials, the frame has a latching structure in which the latching portion is fitted to the latching window or the latching recess on the tail end side of the cap or the shaft tube. It is fixedly provided on the tail end side of the cap or shaft tube.
[0009]
Further, the above-described fitting latching structure is provided with an opening having an appropriate opening width in the axial direction from the tail end edge on at least the outer peripheral both surfaces facing each other on the tail end side of the cap or the shaft tube. At the end of the opening, a latching window wider than the opening width is provided, while a protruding arm piece that closely fits the opening is provided from the circumferential edge of the piece located on the outer peripheral double-sided line. The gist of the invention is that a hooking portion that closely fits the hooking window is provided at the protruding end of the arm piece.
According to such technical means, as described above, when the piece body is simultaneously formed on the tail end side of the cap or the shaft tube in the manner of two-color molding or insert molding, it is simultaneously formed on the tail end side. The arm piece part of the piece that is simultaneously molded to the opening part is closely fitted, and the latching part of the projecting end of the latching piece part is tightly fitted to the latching window at the opening end of the opening part. . As a result, in addition to the integrated structure in which the pieces are closely adhered to each other due to the consistency between the materials, the frame has a latching structure in which the latching portion is fitted to the latching window or the latching recess on the tail end side of the cap or the shaft tube. It is fixedly provided on the tail end side of the cap or shaft tube.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
  A specific example of the embodiment of the present invention will be described with reference to the drawings.
  1 to 5Is a bookAn example of the cap 1 of the invention writing instrument is shown, and the cap 1 and the frame body 2 provided on the tail end side of the cap 1 are simultaneously molded in the manner of two-color molding or insert molding. Further, at the time of this simultaneous molding, a fitting latching structure that fits and latches with each other at least on the outer circumferential both sides facing each other on the tail end side of the cap 1 and on the circular circumferential edge of the frame body 2 located on the outer circumferential double-sided line. The frame body 2 with respect to the tail end side of the cap 1 is provided by an integrated structure in which close contact is achieved by coherence between materials obtained by simultaneous molding and a fitting latching structure that fits and latches each other. Are fixed together by two-color molding or insert molding.
[0011]
The cap 1 is formed into a cylindrical tube shape having front and rear ends opened with a required synthetic resin material that is transparent or variously colored, for example, a transparent synthetic resin material. In addition, a mounting portion 3 to be described later of the fitting latching structure is formed.
[0012]
The attachment portion 3 serves to increase the fixing strength of the frame body 2 with respect to the tail end side of the cap 1 by achieving close contact with the arm piece portion 4 to be described later of the fitting latch structure. The cap 1 is formed in a substantially flat shape with an appropriate width lower than the surface of the other part (the outer peripheral surface of the cap 1) in the axial direction from the tail opening edge of the cap 1 toward the front opening direction. The stop convex part 5 is provided with protrusion.
[0013]
The latching convex portion 5 serves to increase the strength of the frame 2 to be fixed to the tail end side of the cap 1 by fitting latching with a latching window 6 described later of the fitting latching structure. The central portion of the surface of the portion 3 is formed into a substantially cylindrical shape with a protruding height corresponding to the surface height of the other portion.
[0014]
The frame body 2 is made of a different material such as hard rubber and elastomer different from the synthetic resin material for molding the cap 1, or a different color synthetic resin material, for example, an ink color synthetic resin material, and the tail end opening of the cap 1 is formed. Like the tail plug that closes the lid, it is fixed to the tail end side by simultaneous molding in the manner of two-color molding or insert molding. Then, an arm piece portion 4 is formed in a protruding shape that fits closely to the mounting portion 3 from its circumferential edge located at the tail end side of the cap 1 and corresponding to the two mounting portions 3 described above, and the arm piece portion 4 Is formed with a circular latching window 6 that closely fits the circumferential surface of the latching convex portion 5 described above. In the figure, reference numeral 7 denotes a clip that is simultaneously molded from the circumferential edge of the piece 2 located approximately 90 ° in the circumferential direction from the arm piece 4 toward the axial direction of the cap 1, and 8 in the figure is the piece 2. This is an inner cap that is co-molded coaxially from the inner shaft core into the cap 1.
[0015]
The arm piece portion 4 has a substantially flat shape in which the inner surface side is adapted to the mounting portion 3 of the cap 1 and has an arc-shaped cross-sectional shape in which the surface side is flush with the arc surface of the cap 1. A latching window 6 is formed by protruding from both circumferential edges of the body 2 and penetrating the front and back surfaces thereof.
[0016]
The latching window 6 is formed into an opening at the central portion of the arm piece 4 described above corresponding to the latching convex portion 5 of the mounting portion 3 of the cap 1, and is closely fitted to the latching convex portion 5 of the mounting portion 3. It has come to be.
[0017]
Thus, according to the cap 1 configured as described above, the frame body 2 is simultaneously formed on the tail end side of the cap 1 in the manner of two-color molding or insert molding. At the same time, the arm of the frame body 2 that is simultaneously molded with respect to the mounting portion 3 that is simultaneously molded on the tail end side of the cap 1 is fixed together with an integrated structure in which the adhesion between the materials is achieved. The piece 2 is closely fitted and the latching window 6 of the arm piece 4 is tightly fitted to the latching convex portion 5 of the mounting portion 3, so that the frame body 2 is added to the integrated structure described above. The fitting window 5 is fixedly attached to the tail end side of the cap 1 with a reliable and strong mounting structure by the fitting latching structure of the latching window 6 to the latching convex portion 5 on the tail end side of the cap 1. As a result, the mounting state of the frame body 2 does not give a sense of incongruity to the user, and there is no possibility that it will easily fall off due to an impact or the like when dropped on the floor surface.
[0018]
As illustrated in FIG. 6, it is possible to fix the frame body 2 to the tail end side of the shaft tube 9 with the mounting structure described above by simultaneously molding the frame body 2 in the manner of two-color molding or insert molding. The mounting structure on the tail end side of the shaft barrel 9 of 2 is basically the same as the detailed description of the embodiment described above, and the description thereof is omitted by using the same reference numerals for the same components. In the case of the shaft tube 9, the frame body 2 is fixedly formed on the tail end side of the frame body 2 in the manner of two-color molding or insert molding using hard rubber or elastomer, thereby fixing the shaft tube 9 to the floor. The impact when dropped onto a surface or the like is buffered by the frame body 2 made of hard rubber or elastomer. That is, it is possible to expect an effect that can prevent problems such as the ink contained in the ink flowing backward due to a back shock caused by an impact.
In the figure, reference numeral 10 denotes a receiving portion simultaneously formed on the frame body 2, and the rear end opening is received by loading the ink containing tube 11 (commonly referred to as a replacement core) into the shaft tube 9. The air is exchanged in the ink storage tube 11 in accordance with the reduction (consumption) of the ink in contact with the portion 10.
[0019]
  7 to 8Is a bookInvention writing instrument capotherFor example, the clip 7 and the inner cap 8 are formed simultaneously with the cap 1, the number of protrusions 5 of the latching protrusion 5 with respect to the attachment portion 3, the shape of the protrusion, and the number of openings of the latching window 6 with respect to the arm piece 4 The opening shape is changed. In such an embodiment, the mounting portion 3 described in detail in the above-described embodiment is formed to be slightly larger than the cap 1 having the clip 7 and the inner cap 8 integrally therewith, and on the surface thereof in parallel in the axial direction. For example, while the hooking convex portions 5-1... That are projected in a display shape such as characters and marks are provided at several places, the arm piece portion 4 of the frame body 2 is also turned around so that the fitting portion 3 can also be closely fitted. The latch windows 6-1 are arranged in parallel at the same interval in an opening shape that fits closely to the latch protrusions 5-1 that exhibit display shapes such as characters and marks. When the latching windows 6-1 of the arm piece 4 are closely fitted to the latching projections 5-1 of the mounting portion 3 (see FIG. 8), the frame body 2 of the cap 1 is The tail end side is fixed and provided with a reliable and strong mounting structure. And the latching state of each latching convex part 5-1 ... and each latching window 6-1 ... appears on the surface of the arm piece part 4 of the frame 2 as a display part 12 such as characters and marks. (See FIG. 7).
[0020]
In addition, the frame body 2 and the arm piece part 4 in such an embodiment are simultaneously molded using an elastomer. By using the elastomer as described above, the cap 1 can be easily attached and detached due to the anti-slip effect of the elastomer. That is, when the cap 1 is attached and removed, the arm piece 4 made of elastomer exhibits an anti-slip effect by grasping the cap 1 with the finger placed on (attached to) the arm piece 4 of the frame 2. In addition, the cap 1 can be easily detached.
Further, in the cap 1 in such an embodiment, the surface shape of the mounting portion 3 formed on the rear end side is formed in an arc shape corresponding to the outer peripheral surface of the cap 1. That is, the mounting portion 3 is formed into a groove shape that is lowered by one step in a circular arc shape from the tail end opening edge of the cap 1 toward the front end opening direction, and a display shape such as characters and marks is formed on the surface of the arc shape. Each of the latching protrusions 5-1... Formed is preferably formed in parallel in the axial direction with a protruding height corresponding to the surface height of the outer peripheral surface of the cap 1. In this case, the cross-sectional shape of the arm piece portion 4 of the frame body 2 is also projectingly molded in a cross-sectional arc shape that fits closely to the mounting portion 3, and the opening that fits closely to each latching convex portion 5-1. Each of the shaped retaining windows 6-1 is formed into an opening.
[0021]
  9 to 13Is a bookInvention writing instrument cap 1-1More othersAn example is shown, and in such an embodiment, a groove-shaped attachment portion 13 is provided in the axial direction from the opening edge of the tail end on both outer peripheral opposite surfaces on the tail end side of the cap 1-1. At the end of the groove is provided with a latching window 14 that is open toward the inside, while providing an arm piece part 15 that exhibits a protruding shape that fits closely to the mounting part 13 from the circumferential edge of the frame 2-1; At the projecting end of the arm piece 15, there is provided a latching portion 16 that closely fits the latching window 14, and the frame 2-1 is formed simultaneously on the tail end side of the cap 1 in the manner of two-color molding or insert molding. In this way, it is fixedly provided. The configuration of the cap 1-1, the frame body 2-1, the clip 7-1, and the inner cap 8-1 is basically the same as the detailed description of the above-described embodiment, so that the description thereof is omitted. .
[0022]
The mounting portion 13 is a groove that is lowered by one step at an appropriate groove width from the surface of the other part (the outer peripheral surface of the cap 1-1) in the axial direction from the tail end opening edge of the cap 1-1 toward the front end opening direction. The arm piece portion 15 is formed so as to protrude from both circumferential edges of the frame body 2-1 so as to be in close contact with each other, and a retaining window 14 is provided at the end of the groove.
[0023]
The latching window 14 is formed by opening at the groove end of the mounting portion 13 with the groove width of the mounting portion 13, and the same width as the protruding width of the arm piece portion 15 at the protruding end of the arm piece portion 15 of the frame 2-1 Since the latching portion 16 formed in the above is closely fitted, the frame body 2-1 is fixedly attached to the tail end side like a tail plug that closes the tail end opening of the cap 1-1. (See FIGS. 9 to 10).
[0024]
Thus, according to the cap 1-1 configured as described above, as described in detail in the above-described embodiment, the frame body 2-1 is formed on the tail end side of the cap 1-1 in the manner of two-color molding or insert molding. By being simultaneously molded, the cap 1-1 is fixed to the tail end side of the cap 1-1 with an integrated structure in which close contact is achieved due to consistency between materials. The arm piece 15 of the frame body 2-1 that is simultaneously molded is closely fitted to the mounting portion 13 that is simultaneously molded on the tail end side of the cap 1-1, and the latching window 14 of the mounting portion 13 is also fitted. Since the latching portion 16 of the arm piece portion 15 is closely fitted to the frame piece 2-1, the frame body 2-1 is latched to the latching window 14 on the tail end side of the cap 1-1 in addition to the integrated structure described above. The fitting engagement structure of the part 16 is fixed and provided on the tail end side of the cap 1-1 with a reliable and tough attachment structure.
[0025]
14 to 18 show the mounting structure of the cap 1-1 and the frame body 2-1 described above, and the groove end of the mounting portion 13 on the rear end side of the cap 1-1 is wider than the groove width of the mounting portion 13. On the other hand, a hooking portion 18 that is wider than the protruding width of the arm piece 15 is formed at the protruding end of the arm piece 15 of the frame 2-1 and the hooking recess 17 is formed. The frame 2-1 is fixed and provided on the tail end side of the cap 1-1 with a reliable and strong mounting structure by the fitting latching structure in which 18 is closely fitted to the latching recess 17. This is another embodiment.
[0026]
In addition, while the opening width of the above-mentioned latching window 14 is formed wider than the groove width of the mounting portion 13 in the same manner as the latching concave portion 17, the latching portion 18 is similarly formed in the protruding width of the arm piece portion 15. Alternatively, the mounting structure may be formed so as to be wider than each other so as to engage and engage with each other.
[0027]
  19 to 23Is a bookInvention writing instrument cap 1-2More othersAn example is shown, and in such an embodiment, an opening 19 that opens from the tail end opening edge in the axial direction with an appropriate opening width is provided on both outer peripheral opposite surfaces on the tail end side of the cap 1-2, and The opening end of the opening 19 is provided with a latching window 20 opened wider than the opening width, while exhibiting a protruding shape that fits closely to the opening 19 from the circumferential edge of the frame 2-2. An arm piece portion 21 is provided, and a hooking portion 22 that closely fits the hooking window 20 is provided at the protruding end of the arm piece portion 21, and a piece 2-2 is formed on the tail end side of the cap 1-2. It is formed by being simultaneously molded and fixed in the manner of color molding or insert molding. The configuration of the cap 1-2, the frame body 2-2, the clip 7-2, and the inner cap 8-2 is basically the same as the detailed description of the above-described embodiment, so that the description thereof is omitted. .
[0028]
The opening 19 is formed by opening with an appropriate opening width in the axial direction from the tail opening edge of the cap 1-2 toward the front opening, and the inner cap 8-2 is formed from both circumferential edges of the frame 2-2. The arm piece portion 21 is formed so as to be closely fitted and fitted in a state of being continuously provided (see FIG. 22), and a latching window 20 is provided at the end of the opening.
[0029]
The retaining window 20 is formed at the opening end of the opening 19 so as to be wider than the opening width of the opening 19, and is connected to the inner cap 8-2 at the protruding end of the arm piece portion 21 of the frame 2-2. In this state (see FIG. 23), the latching portion 22 that is also formed in a wide shape is closely fitted, so that the piece on the tail end side is like a tail plug that closes the tail end opening of the cap 1-2. The body 2-2 is fixedly provided.
[0030]
Thus, according to the cap 1-2 configured as described above, as described in detail in the above embodiment, the frame 2-2 is formed on the tail end side of the cap 1-2 in the manner of two-color molding or insert molding. By being simultaneously molded, they are fixed to the tail end side of the cap 1-2 with an integrated structure in which close contact is achieved due to the consistency between materials. The arm piece portion 21 of the piece 2-2 that is simultaneously molded is closely fitted to the opening 19 that is simultaneously molded on the tail end side of the cap 1-2, and the latching window 20 of the opening 19 is also fitted. Since the latching portion 22 of the arm piece portion 21 is closely fitted to the frame body 2-2, the frame body 2-2 is latched to the latching window 20 on the tail end side of the cap 1-2 in addition to the integrated structure described above. The fitting engagement structure of the portion 22 is fixed to the tail end side of the cap 1-2 with a reliable and strong mounting structure. Since the inner cap 8-2 is supported in a continuous manner with respect to the arm piece portion 21 that is formed by projecting from both circumferential edges of the frame 2-2 facing each other and the latching portion 22 of the protruding end, Even when a load stress such as a collision of the pen tip is repeatedly applied when the cap 1-2 is attached, the cap 1-2 is coaxially installed without causing a misalignment or the like.
[0031]
【The invention's effect】
  Since the cap or shaft cylinder of the writing instrument of the present invention is configured as described above, the following operational effects can be obtained.
(1)Since the frame is formed simultaneously on the tail end side of the cap or shaft cylinder in the manner of two-color molding or insert molding, the frame body adheres to the tail end side of the cap or shaft cylinder due to the consistency between materials. At the same time, it is firmly fixed by a fitting latching structure that fits and latches with each other at the time of molding. As a result, the frame is fixedly attached to the tail end side of the cap with a tough attachment structure by a fitting latching structure.
  Moreover, when the frame body is simultaneously formed on the tail end side of the cap or the shaft tube in the manner of two-color molding or insert molding, the same piece is simultaneously formed on the mounting portion simultaneously formed on the tail end side. The arm piece part of the body is closely fitted and one or several latching windows of the arm piece part are tightly fitted to one or several latching convex parts of the mounting part. As a result, in addition to the integrated structure in which the pieces are closely adhered to each other due to the consistency between the materials, the cap or shaft is fitted by the latching structure of the latching window to the latching convex part on the tail end side of the cap or the shaft tube. It is firmly fixed on the tail end side of the tube.
  In addition, the protruding shape of the latching convex portion of the mounting portion is formed in a display shape such as a character or a mark, and the opening shape of the latching window of the arm piece is also formed in a display shape such as a character or a mark. Since the latching state of each latching convex part and each latching window appears on the surface of the arm piece part of the frame as a display part of characters, marks, etc., it looks good as a product. The effect that the decorativeness etc. which improve can be improved further can be anticipated.
[0033]
(3)When the frame body is simultaneously formed on the tail end side of the cap or the shaft tube in the manner of two-color molding or insert molding, the same frame is simultaneously formed on the mounting portion simultaneously formed on the tail end side. The arm piece portion is closely fitted and the latching portion of the protruding end of the arm piece portion is tightly fitted to the latching window or the latching recess at the end of the mounting portion. As a result, in addition to the integrated structure in which the pieces are closely adhered to each other due to the consistency between the materials, the frame has a latching structure in which the latching portion is fitted to the latching window or the latching recess on the tail end side of the cap or the shaft tube. It is fixedly provided on the tail end side of the cap or shaft tube.
[0034]
(4)When the frame body is simultaneously formed on the tail end side of the cap or the shaft cylinder in the manner of two-color molding or insert molding, the same frame is simultaneously formed on the opening simultaneously formed on the tail end side. The arm piece portion is closely fitted and the latching portion of the protruding end of the latching piece portion is tightly fitted to the latching window at the opening end of the opening portion. As a result, in addition to the integrated structure in which the pieces are closely adhered to each other due to the consistency between the materials, the frame has a latching structure in which the latching portion is fitted to the latching window or the latching recess on the tail end side of the cap or the shaft tube. It is fixedly provided on the tail end side of the cap or shaft tube.
[0035]
Therefore, according to the writing instrument of the present invention, in the attachment structure of the frame body to the tail end side of the cap or the shaft tube, the two-color molding or the insert molding is performed at the same time so that the adhesion due to the consistency between the materials is achieved. In the integrated structure shown in the figure, the fitting latching structure that fits and latches with each other, for example, the latching window of the arm piece part of the frame with respect to the latching convex part of the mounting part on the tail end side of the cap Since the frame body can be secured to the tail end side of the cap with a strong mounting structure by the fitting and latching structure, the mounting state of the frame body becomes loose like a conventional writing instrument, giving the user a sense of incongruity. In addition, there is no risk of falling off easily due to an impact or the like when dropped on the floor surface.
[Brief description of the drawings]
[Figure 1]BookThe longitudinal cross-sectional view which showed an example of the cap of invention writing instrument
FIG. 2 is a longitudinal sectional view taken along line II-II in FIG.
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a perspective view showing the entire cap.
FIG. 6 shows another embodiment provided with a frame on the rear end side of the shaft tube, (a) is a longitudinal sectional view (b) is an enlarged cross-sectional view of the loro line of (a).
[Fig. 7]BookAn example of the cap of the invention writing instrument, comprising a clip and an inner cap by simultaneous molding, and the protruding shape of the latching convex part is a display shape such as letters and marks, while being fitted to the latching convex part The opening shape of the latching window that is to be latched is a front view that is simultaneously molded in the same way as two-color molding as a display shape of letters, marks, etc., with a part cut away
8 is a longitudinal sectional view taken along line VIII-VIII in FIG.
FIG. 9 is a longitudinal sectional view showing an example of a cap of the writing instrument of the present invention according to claims 1 to 3 and claim 5;
10 is a vertical sectional view taken along line XX in FIG.
11 is a cross-sectional view taken along line XI-XI in FIG.
12 is a cross-sectional view taken along line XII-XII in FIG.
FIG. 13 is a perspective view showing the entire cap.
[Figure 14]BookThe longitudinal cross-sectional view which showed the other Example of the cap of invention writing instrument
15 is a vertical sectional view taken along line XV-XV in FIG.
16 is a cross-sectional view taken along line XVI-XVI in FIG.
17 is a cross-sectional view taken along line XVII-XVII in FIG.
FIG. 18 is a perspective view showing the entire cap.
[Figure 19]BookThe longitudinal cross-sectional view which showed the other Example of the cap of invention writing instrument
20 is a longitudinal sectional view taken along line XX-XX in FIG.
21 is a cross-sectional view taken along line XXI-XXI in FIG.
22 is a cross-sectional view taken along line XXII-XXII in FIG.
FIG. 23 is a perspective view showing the entire cap.
[Explanation of symbols]
1,1-1, 1-2 ... cap 2,2-1, 2-2 ... frame
        3, 13 ... Mounting part 4, 15, 21 ... Arm piece
      5,5-1… Hooking projection 6,6-1,14,20… Hooking window
7, 7-1, 7-2 ... Clip 8, 8-1, 8-2 ... Inner cap
            9 ... Shaft 16, 18, 22 ... Hook
            17… Hook recess 19… Opening

Claims

In a writing instrument with a frame on the tail end of the cap or shaft,
The frame body is simultaneously molded on the tail end side of the cap or shaft cylinder in the manner of two-color molding or insert molding, and is fitted and latched between the tail end side of the cap or shaft cylinder and the frame body in the axial direction. Ri Na and the fitting latching structure mutually provided,
The fitting latching structure is provided with a mounting portion that is at least one step lower than the surface of the other portion in the axial direction from the tail end on both outer peripheral surfaces facing each other at the tail end side of the cap or the shaft tube. The surface is provided with one or several hooking protrusions having a protrusion height corresponding to the surface height of at least another portion and exhibiting an appropriate protrusion shape, and from the circumferential edge of the piece located on the outer peripheral double-sided line. A writing instrument characterized in that a protruding arm piece that fits closely to the mounting portion is provided, and that the arm piece is provided with one or several latching windows that fit closely to the latching projection. .

  In a writing instrument with a frame on the tail end side of the cap or shaft,
  The frame body is molded simultaneously on the tail end side of the cap or shaft cylinder in the manner of two-color molding or insert molding, and is fitted and locked between the tail end side of the cap or shaft cylinder and the frame body in the axial direction. A mating latch structure is provided,
  The fitting latching structure is provided with a groove-shaped mounting portion in the axial direction from the tail end edge on at least the outer peripheral opposite surfaces of the cap or the shaft tube on the tail end side, and the end of the mounting portion is internally provided An arm piece having a projecting shape that fits closely to the mounting portion from the circumferential edge of the frame located on the outer peripheral double-sided line, while providing a latching recess that is wider than the retaining window opened toward the groove or the groove width. A writing instrument comprising: a hook portion adapted to closely contact the hooking window or the hook recess portion at the projecting end of the arm piece portion.

  In a writing instrument with a frame on the tail end side of the cap or shaft,
  The frame body is molded simultaneously on the tail end side of the cap or shaft cylinder in the manner of two-color molding or insert molding, and is fitted and locked between the tail end side of the cap or shaft cylinder and the frame body in the axial direction. A mating latch structure is provided,
  The fitting latching structure is provided with an opening having an appropriate opening width in the axial direction from the tail end edge on at least the outer peripheral both surfaces facing each other on the tail end side of the cap or the shaft tube, and at the opening end of the opening. Is provided with a projecting arm piece that fits closely to the opening from the circumferential edge of the piece located on the outer peripheral double-side line, while providing a latching window wider than the opening width. A writing instrument characterized in that a hooking portion that closely fits the hooking window is provided at the tip of the hook.

The writing instrument according to any one of claims 1 to 3,
Writing instrument, characterized in that a clip is formed simultaneously on the frame or cap.

The writing instrument according to any one of claims 1 to 4,
A writing instrument characterized in that the frame and its arm piece are molded simultaneously with rubber or elastomer.