JP4348210B2 - Writing instrument - Google Patents
Writing instrument Download PDFInfo
- Publication number
- JP4348210B2 JP4348210B2 JP2004047473A JP2004047473A JP4348210B2 JP 4348210 B2 JP4348210 B2 JP 4348210B2 JP 2004047473 A JP2004047473 A JP 2004047473A JP 2004047473 A JP2004047473 A JP 2004047473A JP 4348210 B2 JP4348210 B2 JP 4348210B2
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- Japan
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- locking hole
- shaft cylinder
- locking
- surface layer
- built
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- Clips For Writing Implements (AREA)
- Pens And Brushes (AREA)
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Description
本発明は、シャープペンシル、ボールペン、蛍光ペン等の筆記具に関する。 The present invention relates to a writing instrument such as a mechanical pencil, a ballpoint pen, or a fluorescent pen.
筆記具、例えばシャープペンシルでは、筒状の軸筒を形成し、この軸筒内に芯繰出機構やクリップの取付筒その他の種々の内蔵パーツを挿入し、該内蔵パーツを所定位置に固定して組み立てられる。そして、内蔵パーツは、圧入、はめ込み、ねじ着等により固定され、また軸筒に係止孔を形成すると共に内蔵パーツに係止爪を設け、この係止爪を係止孔に係合させて固定する構造もよく用いられている（例えば、特許文献１参照）。しかし、係止爪を係合するための係止孔を軸筒に形成すると、孔がみえるので外観形状が損なわれ、デザイン上好ましくないことがある。また、デザインを重視し、他の部材によって隠されるような位置に係止孔を配置しようとすると、限られた部位に挿入される内蔵パーツにしか利用することができなかった。
本発明の解決課題は、上記のように軸筒に係止孔を設けて該軸筒内に挿入した内蔵パーツの係止爪を係合するようにした筆記具において、係止孔が外部に表われず、デザイン上の問題を生じないようにした筆記具を提供することである。 The problem to be solved by the present invention is that, in the writing instrument in which the locking hole is provided in the shaft cylinder as described above and the locking claw of the built-in part inserted into the shaft cylinder is engaged, the locking hole is exposed to the outside. It is to provide a writing instrument that does not cause design problems.
本発明によれば、軸筒本体に係止孔を形成し、該軸筒内に挿入される内蔵パーツに係止爪を設けて上記係止孔に係合するようにした筆記具において、上記係止孔を覆うよう軟質の表層部を２色成形若しくはインサート成形の要領により上記軸筒本体の外面に形成して上記係止孔を閉塞すると共に該係止孔に入り込む内方突部を設け、該表層部の硬度を上記内蔵パーツの係止爪の硬度よりも軟らかい材料で形成し、上記係止孔に係止爪を係合した際に上記内方突部が変形されるように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。 According to the present invention, in the writing instrument in which the locking hole is formed in the shaft cylinder main body and the locking part is provided in the built-in part inserted into the shaft cylinder so as to engage with the locking hole. A soft surface layer part is formed on the outer surface of the shaft cylinder main body by the procedure of two-color molding or insert molding so as to cover the stop hole to close the locking hole and provide an inward protrusion that enters the locking hole, The hardness of the surface layer is made of a material softer than the hardness of the locking claw of the built-in part, and the inward projection is deformed when the locking claw is engaged with the locking hole. A writing instrument characterized by the above is provided, and the above-mentioned problems are solved.
本発明は上記のように構成され、軸筒本体に形成した係止孔を覆うように軟質の表層部を形成したから、該係止孔の外方端が閉塞されて外観に表われないようにでき、体裁がよく、しかも表層部はグリップ部として機能するので、使い易くなる。また、該表層部の一部が係止孔に入り込むことにより、該表層部と軸筒本体は一層強固に一体化され、内蔵パーツに形成した係止爪を係止孔に係合させた際、上記係止孔内に入り込んだ表層部の内方突部に当って該内方突部が弾性的に変形するようにすると、係合状態で上記内蔵パーツがガタつかないようにすることができる。 Since the present invention is configured as described above and the soft surface layer portion is formed so as to cover the locking hole formed in the shaft cylinder body, the outer end of the locking hole is blocked so that it does not appear in appearance. It is easy to use because it has a good appearance and the surface layer functions as a grip. Moreover, when a part of the surface layer portion enters the locking hole, the surface layer portion and the shaft tube main body are more firmly integrated, and when the locking claw formed on the built-in part is engaged with the locking hole. When the inner protrusion is elastically deformed by striking the inner protrusion of the surface layer portion that has entered the locking hole, the built-in part can be prevented from rattling in the engaged state. it can.
図１は、本発明をボールペンに適用した一実施例を示し、軸筒（１）は、軸筒本体（２）と該軸筒本体（２）の外側に２色成形若しくはインサート成形の要領により一体成形された表層部（３）を有し、軸筒本体（２）は硬質に形成され、表層部（３）は熱可塑性エラストマーや軟質プラスチック材料で軟質に形成されており、後端には内蔵パーツの一例としてクリップ（４）を有するクリップ筒（５）が設けられている。 FIG. 1 shows an embodiment in which the present invention is applied to a ballpoint pen. A shaft cylinder (1) is formed by two-color molding or insert molding on the outer side of the shaft cylinder main body (2) and the shaft cylinder main body (2). It has an integrally formed surface layer part (3), the shaft cylinder body (2) is formed hard, and the surface layer part (3) is formed softly from a thermoplastic elastomer or a soft plastic material. As an example of the built-in part, a clip cylinder (5) having a clip (4) is provided.
図２に示すように、上記クリップ筒（５）は、軸筒本体（２）内に挿入される挿入筒（６）を有し、その外周には外方に突出する係止爪（７）が設けられかつ軸方向に延びる位置決め用突起（８）が形成され、上記表層部（３）よりも硬い材料で形成されている。 As shown in FIG. 2, the clip cylinder (5) has an insertion cylinder (6) to be inserted into the shaft cylinder main body (2), and a locking claw (7) protruding outward on the outer periphery thereof. And a positioning projection (8) extending in the axial direction is formed, and is made of a material harder than the surface layer portion (3).
上記軸筒本体（２）は、係止孔（９）と位置決め用溝（１０）を有し、上記表層部（３）は該係止孔（９）を覆い、好ましくはその一部が該係止孔（９）内に入り込んで内方突部（１１）を形成している。また、上記位置決め用溝（１０）の内方には、上記係止爪（７）の挿入を案内するよう傾斜面（１２）が形成されている（図４参照）。なお、上記位置決め用突起を軸筒本体側に設け、位置決め用溝を挿入筒側に設けるようにしたり、これらの位置決め用部材を省略することもできる。 The shaft cylinder main body (2) has a locking hole (9) and a positioning groove (10), and the surface layer portion (3) covers the locking hole (9), and preferably a part thereof is the An inward projection (11) is formed by entering the locking hole (9). Further, an inclined surface (12) is formed inside the positioning groove (10) to guide the insertion of the locking claw (7) (see FIG. 4). The positioning protrusions can be provided on the shaft tube main body side, and the positioning grooves can be provided on the insertion tube side, or these positioning members can be omitted.
而して、上記クリップ筒（５）を軸筒（１）の後端から挿入すると、上記係止爪（７）は上記係止孔（９）に対向した位置で、上記表層部（３）の上記内方突部（１１）を変形させながら、該係止孔（９）内に入り、該孔縁に係合される（図４）。この際、上記係止孔に入り込む表層部（３）の量を少なくして、上記内方突部（１１）が変形しないようにしたり、軸方向の複数の個所に係止孔を形成することもできる。 Thus, when the clip cylinder (5) is inserted from the rear end of the shaft cylinder (1), the locking claw (7) is located at the position facing the locking hole (9), and the surface layer portion (3). The inner protrusion (11) is deformed while entering the locking hole (9) and engaged with the hole edge (FIG. 4). At this time, the amount of the surface layer portion (3) entering the locking hole is reduced so that the inward projection (11) is not deformed, or locking holes are formed at a plurality of axial positions. You can also.
上記実施例では、クリップ筒に本発明を適用したが、芯繰出機構部や回転カム式送り機構部その他の軸筒内に装着する各種内蔵パーツの固定手段として本発明を適用することができる。 In the above embodiment, the present invention is applied to the clip cylinder. However, the present invention can be applied as a fixing means for various built-in parts to be mounted in the shaft cylinder, the rotary cam feed mechanism section, and other shaft cylinders.
１ 軸筒
２ 軸筒本体
３ 表層部
５ クリップ筒
７ 係止爪
９ 係止孔
１１ 内方突部
DESCRIPTION OF
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004047473A JP4348210B2 (en) | 2004-02-24 | 2004-02-24 | Writing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004047473A JP4348210B2 (en) | 2004-02-24 | 2004-02-24 | Writing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2005238459A JP2005238459A (en) | 2005-09-08 |
| JP4348210B2 true JP4348210B2 (en) | 2009-10-21 |
Family
ID=35020724
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004047473A Expired - Fee Related JP4348210B2 (en) | 2004-02-24 | 2004-02-24 | Writing instrument |
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| Country | Link |
|---|---|
| JP (1) | JP4348210B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4831680B2 (en) * | 2006-08-01 | 2011-12-07 | 株式会社パイロットコーポレーション | Writing instrument shaft |
| JP2013022765A (en) * | 2011-07-15 | 2013-02-04 | Sailor Pen Co Ltd:The | Writing instrument |
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2004
- 2004-02-24 JP JP2004047473A patent/JP4348210B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| JP2005238459A (en) | 2005-09-08 |
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