JP6896909B2 - ノック式筆記具 - Google Patents
ノック式筆記具 Download PDFInfo
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- JP6896909B2 JP6896909B2 JP2020065310A JP2020065310A JP6896909B2 JP 6896909 B2 JP6896909 B2 JP 6896909B2 JP 2020065310 A JP2020065310 A JP 2020065310A JP 2020065310 A JP2020065310 A JP 2020065310A JP 6896909 B2 JP6896909 B2 JP 6896909B2
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- knock
- cam
- deceleration
- rotor
- type writing
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Images
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Description
2 軸筒
3 リフィル
4 スプリング
10 内筒
11 外カム
13 斜面
20 操作部
21 突起部
22 カム面
30 主回転子
32 内カム
33 カム受け面
37 減速カム面
40 減速回転子
41 第1減速カム受け面
44 第2減速カム受け面
Claims (4)
- 軸筒と、該軸筒内に配置された筆記体と、該筆記体を後方に付勢する弾性部材と、ノック操作の際に前記弾性部材の付勢力に抗して前方へ押圧される操作部と、主回転子とを具備し、前記主回転子が前記軸筒側に設けられた係合部と係合し又は係合解除することで筆記状態と非筆記状態とが切り替えられるノック式筆記具であって、
前記筆記体と共に前後方向に移動する減速回転子と、
前記筆記体の後方への移動中に前記減速回転子と協働して該減速回転子を中心軸線回りに回転させる第1カム面とをさらに具備し、
前記第1カム面が前記軸筒側の内面に形成され、
前記操作部の後端部には消去部材が配置され、前記操作部が筒状に形成され、
前記操作部内において、前記主回転子及び前記減速回転子が配置され、前記減速回転子が前記主回転子の前方に配置されていることを特徴とするノック式筆記具。 - 前記操作部の前方に配置され、前記軸筒の内面に設けられた係止部と係止するノックロック部材をさらに具備することを特徴とする請求項1に記載のノック式筆記具。
- 前記筆記体にはインクが収容され、前記インクは、剪断速度3.83/sにおいて、500〜2000mPa・s、剪断速度383/sにおいて20〜100mPa・sであり、S=αD n (但し、1>n>0)(Sは剪断応力(dyn/cm 2 )、Dは剪断速度(s -1 )、αは非ニュートン粘性係数)で示される粘性式で求められる非ニュートン粘性指数nが、0.2〜0.6であることを特徴とする請求項1又は2に記載のノック式筆記具。
- 前記筆記体にはインクが収容され、前記インクの後方にはインク追従体が配置され、前記インク追従体は、周波数領域1〜63rad/sで指数関数的に増加させながら周波数毎に測定したtanδ値の平均値が1.0以上であることを特徴とする請求項1乃至3のいずれか一項に記載のノック式筆記具。
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Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2578084Y2 (ja) * | 1992-06-30 | 1998-08-06 | 三菱鉛筆株式会社 | シャープペンシル |
JPH0948941A (ja) * | 1995-08-08 | 1997-02-18 | Mitsubishi Pencil Co Ltd | 油性ボールペンインキおよびボールペン |
JP2002307892A (ja) * | 2001-04-16 | 2002-10-23 | Suemine Takahashi | ボールペン |
JP5483891B2 (ja) * | 2009-01-23 | 2014-05-07 | 三菱鉛筆株式会社 | インク追従体及びそれを用いた水性ボールペン |
JP5127796B2 (ja) * | 2009-08-28 | 2013-01-23 | 三菱鉛筆株式会社 | 衝撃緩和機能付きノック式筆記具 |
JP5457263B2 (ja) * | 2010-04-30 | 2014-04-02 | パイロットインキ株式会社 | 熱変色性筆記具 |
JP2012106356A (ja) * | 2010-11-16 | 2012-06-07 | Pilot Corporation | ノック式筆記具 |
JP6202965B2 (ja) * | 2013-09-30 | 2017-09-27 | 三菱鉛筆株式会社 | 筆記具用水性インク組成物 |
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