JP6301580B2 - Thermochromic writing instrument - Google Patents

Thermochromic writing instrument Download PDF

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JP6301580B2
JP6301580B2 JP2012284671A JP2012284671A JP6301580B2 JP 6301580 B2 JP6301580 B2 JP 6301580B2 JP 2012284671 A JP2012284671 A JP 2012284671A JP 2012284671 A JP2012284671 A JP 2012284671A JP 6301580 B2 JP6301580 B2 JP 6301580B2
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friction
thermochromic
rear end
handwriting
writing instrument
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JP2014124899A (en
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雅信 山本
雅信 山本
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Pilot Corp KK
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Description

本発明は、筆記具を構成する筒体の一方の端部に、熱変色性インキの筆跡を摩擦し、その際に生じる摩擦熱で前記熱変色性インキの筆跡を熱変色可能なゴム状弾性を有する軟質樹脂からなる摩擦体を具備してなる熱変色性筆記具に関する。   The present invention provides a rubber-like elasticity capable of rubbing the handwriting of the thermochromic ink on one end of the cylindrical body constituting the writing instrument and thermally changing the handwriting of the thermochromic ink by the frictional heat generated at that time. The present invention relates to a thermochromic writing instrument comprising a friction body made of a soft resin.

従来から、筆記具を構成する筒体の一方の端部に具備した、熱変色性インキの筆跡を摩擦し、その際に生じる摩擦熱で前記熱変色性インキの筆跡を熱変色可能なゴム状弾性を有する軟質樹脂からなる摩擦体については、特開2009−90566号公報「摩擦体」等で開示されている。   Conventionally, a rubber-like elasticity that is provided on one end of a cylinder constituting a writing instrument and that can rub the handwriting of the thermochromic ink and thermally change the handwriting of the thermochromic ink by the frictional heat generated at that time. JP-A 2009-90566 discloses "friction body" and the like about a friction body made of a soft resin having the above.

また、特開2009−90566号公報「摩擦体」では、接触部分の形状が非円形状(例えば、楕円、長方形、線状)とし、熱変色性インキの筆跡の小面積を熱変色させたい場合と、熱変色性インキの筆跡の大面積を熱変色させたい場合とで、摩擦する方向を選択する構造が開示されている。   In addition, in Japanese Patent Laid-Open No. 2009-90566 “Friction body”, the contact portion has a non-circular shape (for example, an ellipse, a rectangle, or a line), and a small area of the handwriting of the thermochromic ink is to be discolored. And a structure for selecting a rubbing direction in a case where it is desired to thermally discolor a large area of the handwriting of the thermochromic ink.

特開2009−90566号公報JP 2009-90566 A

ところで、熱変色性インキの筆跡を摩擦するときには、摩擦体を特に意識することなく紙面に当接させることが多く、その後、上下方向、左右方向などに摩擦することで、熱変色させている。   By the way, when rubbing the handwriting of the thermochromic ink, the friction body is often brought into contact with the paper surface without being particularly conscious, and thereafter, it is thermally discolored by rubbing in the vertical direction, the horizontal direction, and the like.

一方、特許文献1の摩擦体を筆記具のキャップや軸筒等に装着した場合には、熱変色性インキの筆跡の小面積を熱変色させたい場合と、熱変色性インキの筆跡の大面積を熱変色させたい場合とで、摩擦する方向を選択するには、摩擦体の当接した部分から特定方向に摩擦しなければならず、クリップ、操作体、回り止め突部等、熱変色性筆記具の後部に装着した摩擦体を使用するときに、筒体の角度や回転方向を調整することが難しく、摩擦する方向を選択することが困難な場合があるという問題があった。   On the other hand, when the friction body of Patent Document 1 is attached to a cap or shaft cylinder of a writing instrument, a case where it is desired to thermally change a small area of the handwriting of the thermochromic ink and a large area of the handwriting of the thermochromic ink. In order to select the direction of friction in the case where heat discoloration is desired, the friction body must be rubbed in a specific direction from the contacted portion, and the clip, operation body, anti-rotation protrusion, etc. When using the friction body attached to the rear part, there is a problem that it is difficult to adjust the angle and rotation direction of the cylinder, and it is sometimes difficult to select the direction of friction.

本発明はこれらの従来技術に鑑みてなされたものであって、熱変色性インキの筆跡の小面積や細い幅を熱変色させたい場合や、熱変色性インキの筆跡の大面積や太い幅を熱変色させたい場合等、目的に応じて筆跡を摩擦することのできる熱変色性筆記具を提供することにある。   The present invention has been made in view of these conventional techniques, and it is desired to thermally change a small area or a thin width of a handwriting of a thermochromic ink, or a large area or a thick width of a handwriting of a thermochromic ink. An object of the present invention is to provide a thermochromic writing instrument capable of rubbing the handwriting according to the purpose, for example, when it is desired to make the thermochromic.

本発明は、前記問題を解決するために、軸筒内に収容した筆記体を、弾発体によって、軸筒の後端方向に向かって、摺動自在に付勢して収容してあり、出没機構を作動することで前記筆記体の筆記先端部を、前記軸筒の先端開口部から出没可能としてあり、前記軸筒の後方の端部に、熱変色性インキの筆跡を摩擦し、その際に生じる摩擦熱で前記熱変色性インキの筆跡を熱変色可能なゴム状弾性を有する軟質樹脂からなる摩擦部を有する摩擦体を具備してなる熱変色性筆記具であって、前記摩擦体の側面の外側に、外筒体を着脱自在に装着するとともに、前記外筒体は、少なくとも後方の端部に、前記熱変色性インキの筆跡を摩擦し、その際に生じる摩擦熱で前記熱変色性インキの筆跡を熱変色可能なゴム状弾性を有する軟質樹脂からなる第二摩擦部を有してなり、当該第二摩擦部が、貫通孔と、該貫通孔以外は後端を閉鎖した後端部と、円筒状の側面を有し、前記第二摩擦部が、前記摩擦体の摩擦部の側面及び後端部の略全体を覆うことを特徴とする。尚、本発明において、一方とは、長手方向において前方又は後方を示すものであり、他方とはその反対方向を示すものである。 In order to solve the above-mentioned problem, the present invention accommodates the cursive body accommodated in the shaft cylinder by slidably energizing the elastic body toward the rear end direction of the shaft cylinder, The writing tip of the writing body can be made to appear and disappear from the tip opening of the shaft cylinder by operating the protruding and retracting mechanism, and the handwriting of the thermochromic ink is rubbed on the rear end of the shaft cylinder, A thermochromic writing instrument comprising a friction body having a friction portion made of a soft resin having a rubber-like elasticity capable of thermally changing the handwriting of the thermochromic ink with frictional heat generated at the time, An outer cylindrical body is detachably attached to the outside of the side surface, and the outer cylindrical body rubs the handwriting of the thermochromic ink at least on the rear end, and the thermal discoloration is caused by frictional heat generated at that time. Made of a soft resin with rubber-like elasticity that can discolor the handwriting of water-based inks Becomes a friction portion, the second friction portion is a through hole, and the rear end portion than the through holes of closing the rear end, has a cylindrical side surface, the second friction portion, the It covers the entire side surface and rear end of the friction part of the friction body. In addition, in this invention, one shows the front or back in a longitudinal direction, and the other shows the opposite direction.

また、前記外筒体の内面及び/又は側面に、硬質樹脂からなり、前記軸筒と装着する硬質装着部を具備することを特徴とする。 Further, the inner cylinder and / or the side surface of the outer cylinder body is made of a hard resin, and has a hard mounting portion to be mounted on the shaft cylinder .

さらにまた、前記外筒体の側面に指先当接部を設けるとともに、該指先当接部を硬質樹脂で形成したことを特徴とする。   Furthermore, a fingertip contact portion is provided on a side surface of the outer cylindrical body, and the fingertip contact portion is formed of a hard resin.

また、前記外筒体の明度が、前記摩擦体の明度よりも小さいことを特徴とする。   Further, the lightness of the outer cylindrical body is smaller than the lightness of the friction body.

本願発明の第1の構成によれば、前記外筒体は、少なくとも一方の端部に、前記熱変色性インキの筆跡を摩擦し、その際に生じる摩擦熱で前記熱変色性インキの筆跡を熱変色可能なゴム状弾性を有する軟質樹脂からなる第二摩擦部を有することで、熱変色性インキの筆跡の大面積を熱変色させたい場合は、外筒体の第二摩擦部、熱変色性インキの筆跡の小面積を熱変色させたい場合は、外筒体を取り外して、外筒体よりも幅の狭い摩擦体の摩擦部を使用することができる。これは、摩擦体の摩擦部は、外筒体の第二摩擦部よりも紙面を視認しやすく、幅も小さく小面積や細い幅を熱変色しやすいために、所望とする部分のみ、熱変色しやすくすることができるためである。また、外筒体の少なくとも一方の端部に、ゴム状弾性を有する軟質樹脂からなる第二摩擦部を具備することで、落下衝撃を緩和する効果も奏する。   According to the first configuration of the present invention, the outer cylindrical body rubs the handwriting of the thermochromic ink on at least one end, and the handwriting of the thermochromic ink is generated by frictional heat generated at that time. If you want to thermally discolor a large area of the handwriting of thermochromic ink by having a second friction part made of a soft resin with rubber-like elasticity that can be thermally discolored, the second friction part of the outer cylinder, thermal discoloration When it is desired to thermally discolor a small area of the handwriting of the conductive ink, it is possible to remove the outer cylinder and use the friction part of the friction body that is narrower than the outer cylinder. This is because the friction part of the friction body is easier to visually recognize the paper surface than the second friction part of the outer cylindrical body, and the width is small, and the small area and narrow width are more likely to be thermally discolored. This is because it can be made easier. Moreover, the effect which relieves a drop impact is also show | played by providing the 2nd friction part which consists of a soft resin which has rubber-like elasticity in the at least one edge part of an outer cylinder.

尚、摩擦体及び外筒体の第二摩擦部には、ゴム状弾性を有する軟質樹脂、例えば、シリコーンゴム、フッ素系ゴム、クロロプレンゴム、ニトリルゴム、ポリエステル系ゴム、エチレンプロピレンジエンゴム(EPDM)、スチレン系エラストマー、エステル系エラストマー、オレフィン系エラストマー等、ゴム状弾性を有するゴム、エラストマー等の弾性体が挙げられ、適宜選択して用いることができる。また、摩擦体としては、ショアA硬度40以上、100以下が好ましい。また、外筒体の摩擦部は、着脱性などを考慮して、用いる摩擦体の硬度よりも高く、且つショアA硬度60以上、100以下することが好ましい。   Note that the second friction part of the friction body and the outer cylindrical body includes a soft resin having rubber-like elasticity, such as silicone rubber, fluorine rubber, chloroprene rubber, nitrile rubber, polyester rubber, ethylene propylene diene rubber (EPDM). Examples thereof include elastic bodies such as rubbers and elastomers having rubbery elasticity, such as styrene elastomers, ester elastomers, and olefin elastomers, which can be appropriately selected and used. The friction body preferably has a Shore A hardness of 40 or more and 100 or less. Further, it is preferable that the friction portion of the outer cylindrical body is higher than the hardness of the friction body to be used and has a Shore A hardness of 60 or more and 100 or less in consideration of detachability.

本発明の摩擦体は、筒体に嵌着、圧入、螺着、接着、融着によって具備することが挙げられる。さらに、摩擦体は、筒体自体を摩擦体とすること、筒体と摩擦体を二色成形によって一体に成形してあってもよい。さらに、外筒体の第二摩擦部は、外筒体に嵌着、圧入、螺着、接着、融着によって具備することができ、外筒体自体を第二摩擦部とすること、外筒体に第二摩擦部を二色成形によって一体に成形してあってもよい。   The friction body of the present invention may be provided by fitting, press-fitting, screwing, adhesion, and fusion to a cylindrical body. Further, the friction body may be formed by integrally forming the cylinder body and the friction body by two-color molding by using the cylinder body itself as a friction body. Furthermore, the second friction part of the outer cylinder can be provided by fitting, press-fitting, screwing, adhesion, and fusion to the outer cylinder, and the outer cylinder itself is used as the second friction part. The second friction part may be integrally formed on the body by two-color molding.

本願発明の第2の構成によれば、前記外筒体の側面及び/又は内面に、硬質樹脂からなり、前記筒体と装着する硬質装着部を具備することで、繰り返しの着脱等によっても外筒体の装着力の低下を抑制することができる。   According to the second configuration of the present invention, the outer cylindrical body is formed of a hard resin on the side surface and / or the inner surface, and the outer cylindrical body is provided with a hard mounting portion to be mounted on the cylindrical body. A decrease in the mounting force of the cylinder can be suppressed.

本願発明の第3の構成によれば、前記外筒体の側面に指先当接部を設けるとともに、該指先当接部を硬質樹脂で形成することで、第二摩擦部の劣化を抑制することができる。これは、外筒体を着脱するときに、外筒体を指で掴む必要があるが、外筒体を掴んだ部分に手油等が付着し、この手油によって第二摩擦部が膨潤するなど不具合が発生する恐れがある。そのため、指先当接部を硬質樹脂で形成することで、前記した摩擦部に手油の付着を抑制するためである。   According to the 3rd structure of this invention, while providing a fingertip contact part in the side surface of the said outer cylinder, forming this fingertip contact part with hard resin suppresses deterioration of a 2nd friction part. Can do. This means that when attaching / detaching the outer cylinder, it is necessary to grasp the outer cylinder with a finger, but hand oil or the like adheres to the part that has grasped the outer cylinder, and the second friction part swells due to this hand oil. There is a risk of malfunction. For this reason, the fingertip contact portion is formed of a hard resin, thereby suppressing the hand oil from adhering to the friction portion.

本発明に用いる硬質樹脂には、ポリカーボネート、ポリプロピレン、ポリエチレン、ポリスチレン、AS樹脂、ABS樹脂等、筆記具の部材として一般的に知られている熱可塑性樹脂等を使用することができる。また、硬質樹脂部は、摩擦部に嵌着、圧入、螺着、接着、融着によって具備することが挙げられ、摩擦部と硬質樹脂を二色成形によって一体に成形することがコスト面で好ましい。   As the hard resin used in the present invention, a thermoplastic resin generally known as a member of a writing instrument such as polycarbonate, polypropylene, polyethylene, polystyrene, AS resin, ABS resin, or the like can be used. Further, the hard resin portion may be provided by fitting, press-fitting, screwing, adhesion, and fusion to the friction portion, and it is preferable in terms of cost to integrally form the friction portion and the hard resin by two-color molding. .

本願発明の第4の構成によれば、前記外筒体の明度が、前記摩擦体の明度よりも小さくすることで、摩擦体に比べ、外筒体の摩擦部に付着した汚れを視認し難くすることが好ましいためである。これは、熱変色性筆記具を持ち運ぶ際、摩擦部にゴミなどが付着する等、外部に露出する外筒体は汚れが付きやすいためである。尚、明度は、分光測色計(ミノルタ株式会社製、CM−512m)にて、測定することができる。 According to the fourth configuration of the present invention, since the lightness of the outer cylinder body is smaller than the lightness of the friction body, it is difficult to visually recognize the dirt attached to the friction portion of the outer cylinder body compared to the friction body. It is because it is preferable to do. This is because when the thermochromic writing instrument is carried, the outer cylindrical body exposed to the outside, such as dust attached to the friction part, is easily contaminated. The lightness can be measured with a spectrocolorimeter (Minolta, CM-512m 2 ).

本発明に用いる熱変色性インキには、可逆熱変色性インキが好ましい。前記可逆熱変色性インキは、発色状態から加熱により消色する加熱消色型、発色状態または消色状態を互変的に特定温度域で記憶保持する色彩記憶保持型、または、消色状態から加熱により発色し、発色状態からの冷却により消色状態に復する加熱発色型等、種々のタイプを単独または併用して構成することができる。   The thermochromic ink used in the present invention is preferably a reversible thermochromic ink. The reversible thermochromic ink is a heat decoloring type that decolors by heating from a colored state, a color memory retaining type that reversibly stores and retains a colored state or a decolored state in a specific temperature range, or from a decolored state Various types such as a heating coloring type that develops color by heating and returns to a decolored state by cooling from the colored state can be used alone or in combination.

また、前記可逆熱変色性インキに含有される色材は、従来より公知の(イ)電子供与性呈色性有機化合物、(ロ)電子受容性化合物、及び(ハ)前記両者の呈色反応の生起温度を決める反応媒体、の必須三成分を少なくとも含む可逆熱変色性組成物をマイクロカプセル中に内包させた可逆熱変色性マイクロカプセル顔料が好適に用いられる。   The coloring material contained in the reversible thermochromic ink includes conventionally known (a) electron donating color-forming organic compounds, (b) electron-accepting compounds, and (c) color reactions of both. A reversible thermochromic microcapsule pigment in which a reversible thermochromic composition containing at least three essential components of a reaction medium for determining the occurrence temperature of the microcapsule is preferably used.

本発明は、熱変色性インキの筆跡の小面積や細い幅を熱変色させたい場合や、熱変色性インキの筆跡の大面積や太い幅を熱変色させたい場合等、目的に応じて筆跡を摩擦することのできる熱変色性筆記具を提供することができた。   The present invention is suitable for the purpose of thermal discoloration of a small area or thin width of a handwriting of a thermochromic ink, or when it is desired to thermally discolor a large area or a thick width of a thermochromic ink. A thermochromic writing instrument capable of rubbing could be provided.

第1実施形態の熱変色性筆記具を示す縦断面図である。It is a longitudinal cross-sectional view which shows the thermochromic writing instrument of 1st Embodiment. 図1における筆記先端部が突出した状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state which the writing front-end | tip part in FIG. 1 protruded. 図1における一部省略した要部拡大断面図である。It is a principal part expanded sectional view in which a part was omitted in FIG. 図1における摩擦体を使用する状態の一例を示す図である。It is a figure which shows an example of the state which uses the friction body in FIG. 実施形態2の熱変色性筆記具を示す一部省略した要部拡大断面図である。It is a principal part expanded sectional view which abbreviate | omitted partially which shows the thermochromic writing instrument of Embodiment 2. FIG.

図1〜図3に、第1実施形態の熱変色性筆記具1を示す。熱変色性筆記具1は、軸筒内に収容したボールペンレフィルからなる筆記体14を、コイルスプリングからなる弾発体11によって、軸筒本体の後端方向に向かって、摺動自在に付勢して収容してある。軸筒本体は、前軸2、中間軸3、連結具4、後軸6からなり、前軸2と中間軸3とを連結具4を介して装着し、中間軸3の後端部には、長手方向に延びる細長状の窓孔6Aを形成した後軸6を装着して軸筒本体を得ている。   1 to 3 show a thermochromic writing instrument 1 according to the first embodiment. The thermochromic writing instrument 1 slidably biases a writing body 14 made of a ballpoint pen refill housed in a shaft cylinder toward a rear end of the shaft cylinder main body by a resilient body 11 made of a coil spring. Is housed. The shaft cylinder body includes a front shaft 2, an intermediate shaft 3, a connector 4, and a rear shaft 6. The front shaft 2 and the intermediate shaft 3 are mounted via the connector 4, and the rear end of the intermediate shaft 3 is attached to the rear shaft portion. The shaft cylinder body is obtained by mounting the rear shaft 6 after forming the elongated window hole 6A extending in the longitudinal direction.

軸筒は、軸筒本体と先部材5とかなり、軸筒本体前軸2の先端部に設けた雄ねじ部に、先部材5を着脱自在に螺着して軸筒を得ている。さらにまた、中間軸3の後端部に形成した係合凸部を、外体12の被係合部に落とし込み嵌合して、外筒12を軸筒本体に外嵌してある。   The shaft tube is obtained by screwing the tip member 5 detachably on a male screw portion provided at the tip of the shaft tube main body front shaft 2 considerably with the shaft tube main body and the tip member 5. Furthermore, the engaging projection formed on the rear end portion of the intermediate shaft 3 is dropped into the engaged portion of the outer body 12, and the outer cylinder 12 is externally fitted to the shaft cylinder main body.

弾発体11は、先部材5によって、直接、先端部を受け止めてあり、もう一方の端部(後端部)は、筆記体14のチップホルダー16に、直接、当接して、筆記体14を軸筒本体の後端方向に向かって付勢している。   The bullet member 11 is directly received by the tip member 5 and the other end portion (rear end portion) is in direct contact with the chip holder 16 of the writing body 14, so that the writing body 14. Is urged toward the rear end of the shaft main body.

後軸6の外周面には、長手方向に延びる細長状の窓孔6Aが径方向に内外を連通して貫設してあり、この窓孔6Aから後軸6の外周面から径方向外方に突出するように操作体8が配設される。操作体8は、窓孔6Aから外方に突出する、クリップ13を装着する操作部8Aと、中間軸3の長孔3Bを挿通し、回転カム7を先方に移動するとともに回転を誘導するように先端に複数の鋸歯状のカム部(図示せず)を形成した軸部8Bとを具備している。   An elongated window hole 6A extending in the longitudinal direction is provided in the outer peripheral surface of the rear shaft 6 so as to communicate with the inside and the outside in the radial direction, and radially outward from the outer peripheral surface of the rear shaft 6 through the window hole 6A. The operating body 8 is disposed so as to protrude in the direction. The operating body 8 is inserted through the operating portion 8A for mounting the clip 13 protruding outward from the window hole 6A and the long hole 3B of the intermediate shaft 3, so as to move the rotating cam 7 forward and induce rotation. And a shaft portion 8B having a plurality of serrated cam portions (not shown) formed at the tip thereof.

また、操作体8の後端部8Cと後軸6の突起部6B間には、コイルスプリングからなる弾発部材10を配設してあり、常時、操作体8を先部材5の先端開口部5A側に付勢している。   Further, a resilient member 10 made of a coil spring is disposed between the rear end 8C of the operating body 8 and the protrusion 6B of the rear shaft 6, and the operating body 8 is always connected to the front end opening of the front member 5. It is energized to the 5A side.

後軸3の後端部には、熱可塑性エラストマーからなるゴム状弾性を有する白色半透明の摩擦体9を、後軸6の突起部6Bに摩擦体9の突部9Bを乗り越し嵌合することによって装着してある。また、後軸3の後端部及び摩擦体9の摩擦部9Aの外側には、内外を連通する貫通孔20C以外は後端を閉鎖したドーム状の後端部と円筒状の側面からなり、熱可塑性エラストマーからなるゴム状弾性を有する黒色の外筒体20を着脱自在に、後軸6の雄ねじからなる装着部6Cに外筒体20内面の雌ねじからなる装着部20Bとを螺着して、着脱自在に装着してある。   A white translucent friction body 9 having a rubber-like elasticity made of a thermoplastic elastomer is fitted to the rear end portion of the rear shaft 3 and the projection 9B of the friction body 9 is fitted over the projection 6B of the rear shaft 6. It is attached by. Further, the rear end portion of the rear shaft 3 and the outer side of the friction portion 9A of the friction body 9 are composed of a dome-shaped rear end portion and a cylindrical side surface with the rear end closed except for the through hole 20C communicating between the inside and the outside. A black outer cylinder 20 made of thermoplastic elastomer and having rubber-like elasticity is detachably attached to a mounting portion 6C made of a male screw of the rear shaft 6 and a mounting portion 20B made of a female screw on the inner surface of the outer cylindrical body 20. It is detachably attached.

出没機構は、クリップ13を装着した操作体8を先部材5の先端開口部5A方向にスライドすることによって、軸部8Bのカム部、回転カム7からなる従来から知られている回転カムによる出没機構を作動させ、ボールペンチップからなる筆記先端部17を、先部材5の先端開口部5Aから出没可能とするものである。   The retracting mechanism slides the operating body 8 equipped with the clip 13 in the direction of the distal end opening 5A of the tip member 5 to thereby retract and retract by a conventionally known rotating cam including the cam portion of the shaft portion 8B and the rotating cam 7. The mechanism is operated so that the writing tip portion 17 made of a ballpoint pen tip can be projected and retracted from the tip opening portion 5A of the tip member 5.

筆記先端部17が先部材5の先端開口部5Aより没入した状態で、操作体4の操作部を弾発体11の付勢力に抗して、先部材5の先端開口部5A方向にスライドすると、回転カム機構が作動し、筆記先端部17が突出した状態を維持して筆記することができる。   When the operation portion of the operating body 4 is slid in the direction of the front end opening 5A of the front member 5 against the biasing force of the projectile body 11 with the writing front end portion 17 immersed in the front end opening 5A of the front member 5. The rotary cam mechanism is activated, and writing can be performed while the writing tip 17 is projected.

また、筆記体14の筆記先端部17が先部材5の先端開口部5Aから突出した状態で、再度、クリップ13を装着した操作体8を弾発体11の付勢力に抗して、先部材5の先端開口部5A方向にスライドすることによって、軸部8Bのカム部、回転カム7からなる従来から知られている回転カムによる出没機構を作動させ、ボールペンチップからなる筆記先端部17を、先部材5内に没入することができる。   In addition, in the state where the writing tip 17 of the writing body 14 protrudes from the tip opening 5A of the tip member 5, the operation member 8 to which the clip 13 is attached is again resisted against the urging force of the bullet 11. 5, by sliding the cam portion of the shaft portion 8B and the rotary cam 7 in the conventional cam mechanism, the writing tip portion 17 made of a ball-point pen tip is moved. The tip member 5 can be immersed.

筆記体14は、ボール抱持室と、ボール抱持室の中央にインキ流通孔と、このインキ流通孔に連通する放射状に延び、チップ後部孔に達しないインキ流通溝を有するとともに、ボール抱持室の底壁に、φ0.5mmのタングステンカーバイド製のボールを載置し、チップ先端部を内側にかしめことにより、ボールの一部がチップ先端縁より突出するように回転自在に抱持したボールペンチップからなる筆記先端部17を、インキ収容筒15の先端部に、チップホルダー16を介して装着してある。また、インキ収容筒15の後端部には尾栓19を装着してある。また、ボールの後方には、ボールを常時、押圧するスプリング18を配設してある。   The cursive body 14 has a ball holding chamber, an ink circulation hole in the center of the ball holding chamber, a radial passage that communicates with the ink circulation hole, and an ink circulation groove that does not reach the chip rear hole. A ballpoint pen that can be rotatably held so that a part of the ball protrudes from the tip edge of the chip by placing a φ0.5mm tungsten carbide ball on the bottom wall of the chamber and caulking the tip of the chip inward. A writing tip 17 made of a chip is attached to the tip of the ink containing cylinder 15 via a chip holder 16. A tail plug 19 is attached to the rear end of the ink storage cylinder 15. Further, a spring 18 that constantly presses the ball is disposed behind the ball.

また、インキ収容筒15内には、図示はしてないが、レーザー解析よる体積基準での平均粒径が0.5μmの可逆熱変色性のマイクロカプセル顔料を含有し、EM型回転粘度計における1rpmでのインキ粘度が1020mPa・s(25℃)、100rpmでのインキ粘度が84mPa・s(25℃)で、剪断減粘指数が0.48の熱変色性インキと、このインキの後端に、グリース状のインキ追従体を直に収容してある。   Although not shown in the drawing, the ink container 15 contains a reversibly thermochromic microcapsule pigment having an average particle size of 0.5 μm on a volume basis by laser analysis. A thermochromic ink having an ink viscosity at 1 rpm of 1020 mPa · s (25 ° C.), an ink viscosity at 100 rpm of 84 mPa · s (25 ° C.) and a shear thinning index of 0.48, and a trailing edge of this ink A grease-like ink follower is directly accommodated.

この筆記体14を筆記すると、筆記先端部17のボールの回転と、筆圧によって、ボールが底壁側に移動して、チップ先端部の内壁とボールに隙間を生じ、インキを吐出して筆記することができる。   When the writing body 14 is written, the ball moves to the bottom wall side due to the rotation of the ball of the writing tip portion 17 and the writing pressure, a gap is formed between the inner wall of the tip end portion of the ball and the ball, and ink is discharged to write. can do.

筆記体14を交換するには、先部材5を前軸2から取り外し、前軸2から筆記体14の先端部を露出させる。この時、先部材5によって、直接、弾発体11の先端部を受け止めているため、先部材5と同時に弾発体11も取り外すことで、弾発体11による筆記体14を軸筒後端側へ付勢する力は働かなくなるため、操作体8の後端部に配設した弾発部材10によって、操作体8が前軸2側に移動し、操作体8に連動して筆記体14も先側に移動する。前軸2から先方に突出した部分の筆記体14を掴んで先側に移動することで、筆記体14を取り外すことができる。また、同様に、新たな筆記体に交換するには、新たな筆記体を軸筒本体に配設し、弾発体11及び先部材5を装着して使用することができる。   In order to replace the writing body 14, the tip member 5 is removed from the front shaft 2, and the tip of the writing body 14 is exposed from the front shaft 2. At this time, since the tip of the projectile 11 is directly received by the tip member 5, by removing the projectile 11 at the same time as the tip member 5, the writing body 14 by the projectile 11 is attached to the rear end of the shaft cylinder. Since the force urging to the side does not work, the operating body 8 is moved to the front shaft 2 side by the elastic member 10 disposed at the rear end portion of the operating body 8, and the writing body 14 is interlocked with the operating body 8. Also move forward. The graffiti body 14 can be removed by grasping and moving the cursive body 14 protruding forward from the front shaft 2. Similarly, in order to replace with a new writing body, a new writing body can be disposed on the shaft cylinder body, and the projectile 11 and the tip member 5 can be mounted and used.

筆跡を熱変色するには、図4に示すとおり、摩擦部9Aの後端部が、外筒体20の第二摩擦部20Aよりも長手方向において軸筒先端部側に位置しているため、外筒体20を装着した状態で、外筒体20の第二摩擦部20Aをノート等の筆記面Hに筆記した筆跡に圧接し、擦ることで発生する熱によって、熱変色性インキの筆跡を熱消色させることができる。また、外筒体20を取り外して、外筒体20の径方向の幅に比べ、径方向の幅の小さい摩擦体9の摩擦部9Aをノート等の筆記面Hに筆記した筆跡に圧接し、擦ることで発生する熱によって、熱変色性インキの筆跡を熱消色させることもできる。   To thermally discolor the handwriting, as shown in FIG. 4, the rear end portion of the friction portion 9A is located closer to the shaft tube tip portion side in the longitudinal direction than the second friction portion 20A of the outer cylindrical body 20, With the outer cylinder 20 attached, the second friction part 20A of the outer cylinder 20 is pressed against the handwriting written on the writing surface H of a notebook or the like, and the handwriting of the thermochromic ink is applied by the heat generated by rubbing. Can be heat-erased. Further, the outer cylinder 20 is removed, and the friction portion 9A of the friction body 9 having a smaller radial width than the radial width of the outer cylinder 20 is pressed against the handwriting written on the writing surface H such as a notebook, The handwriting of the thermochromic ink can also be thermally decolored by the heat generated by rubbing.

図5に、第2実施形態の熱変色性筆記具101を示す。熱変色性筆記具101は、後軸6の後端部に、摩擦体9を保護する後軸と同系黒色の外筒体120を着脱自在に、後軸6の雄ねじからなる装着部3Cに外筒体120内面の雌ねじからなる硬質装着部120Bとを螺着してある。具体的には、外筒体120は、熱可塑性エラストマー(スチレン系エラストマー)からなるゴム状弾性を有する摩擦部120Aと、側面に熱可塑性樹脂(ポリカーボネート)の硬質樹脂からなり、外筒体120を着脱する時に、指で掴む指先当接部120Dと、内面に熱可塑性樹脂(ポリカーボネート)の硬質樹脂からなる雌ねじ部(硬質装着部)と、内外を連通する貫通孔120Cを具備した以外は、第1実施形態と同様にして熱変色性筆記具101を得ている。   In FIG. 5, the thermochromic writing instrument 101 of 2nd Embodiment is shown. In the thermochromic writing instrument 101, a black outer cylinder 120 similar to the rear axis that protects the friction body 9 is detachably attached to the rear end of the rear shaft 6, and the outer cylinder is attached to the mounting portion 3C formed of a male screw of the rear shaft 6. A hard mounting portion 120B made of a female screw on the inner surface of the body 120 is screwed. Specifically, the outer cylindrical body 120 is made of a frictional part 120A having rubber-like elasticity made of a thermoplastic elastomer (styrene elastomer) and a hard resin of a thermoplastic resin (polycarbonate) on the side surface. Except for having a fingertip abutting portion 120D gripped by a finger when attaching and detaching, an internal thread portion (hard mounting portion) made of a hard resin of thermoplastic resin (polycarbonate) on the inner surface, and a through-hole 120C communicating with the inside and outside. The thermochromic writing instrument 101 is obtained in the same manner as in the first embodiment.

筆跡を熱変色するには、外筒体120を装着した状態で、外筒体120の第二摩擦部120Aをノート等の筆記面に筆記した筆跡に圧接し、擦ることで発生する熱によって、熱変色性インキの筆跡を熱消色させることができる。また、外筒体120の指先当接部120Dを掴み、回転して取り外し、外筒体120の径方向の幅に比べ、径方向の幅の小さい摩擦体9の摩擦部9Aをノート等の筆記面に筆記した筆跡に圧接し、擦ることで発生する熱によって、熱変色性インキの筆跡を熱消色させることができる。   To thermally discolor the handwriting, with the outer cylinder 120 attached, the second friction part 120A of the outer cylinder 120 is pressed against the handwriting written on the writing surface of a notebook, etc., and the heat generated by rubbing, The handwriting of the thermochromic ink can be discolored by heat. In addition, the fingertip contact portion 120D of the outer cylinder 120 is grasped, rotated and removed, and the friction portion 9A of the friction body 9 having a smaller radial width than the outer cylinder 120 is written on a notebook or the like. The handwriting of the thermochromic ink can be thermally decolored by the heat generated by pressing and rubbing the handwriting written on the surface.

本実施形態では、軸筒本体と先部材によって軸筒を構成し、便宜上、軸筒本体は、前軸、中間軸、連結具、後軸の4部品で構成しているが、前軸と後軸の2部品等、先部材の有無や部品点数は、特に限定されるものはない。   In this embodiment, a shaft cylinder is constituted by a shaft cylinder main body and a tip member. For convenience, the shaft cylinder main body is constituted by four parts of a front shaft, an intermediate shaft, a connector, and a rear shaft. The presence or absence of the tip member and the number of parts, such as the two parts of the shaft, are not particularly limited.

また、筒体として、回転カムからなる出没機構を具備した出没式筆記具の軸筒(後軸)を例示しているが、筆記具を構成する筒体であれば、回転繰り出し等、出没機構は特に限定されるものではなく、キャップ式筆記具の軸筒やキャップ、ノック体を筒体としてあってもよい。また、操作体としてクリップを例示してあるが、操作体の形状やクリップの有無は特に限定されるものではない。但し、操作体の操作部やクリップの幅を摩擦体の最大幅よりも小さくすることで、摩擦体の使用時に、筆記面上の筆跡を視認し易いので、好ましい。   In addition, as a cylinder, a shaft cylinder (rear shaft) of a retractable writing instrument provided with a retracting mechanism composed of a rotating cam is illustrated. However, if the cylinder constitutes the writing instrument, the retracting mechanism such as rotation feeding is particularly It is not limited, You may have a cylinder, a cap, and a knock body of a cap-type writing instrument as a cylinder. Moreover, although the clip is illustrated as an operation body, the shape of an operation body and the presence or absence of a clip are not specifically limited. However, it is preferable to reduce the width of the operation portion and the clip of the operation body to be smaller than the maximum width of the friction body because the handwriting on the writing surface can be easily seen when using the friction body.

本実施の形態では、便宜上、後軸に直接、摩擦体を装着してあるが、ノック体などの出没機構を介して、筒体に摩擦体及び外筒体を具備することもできる。   In the present embodiment, for the sake of convenience, the friction body is directly attached to the rear shaft. However, the friction body and the outer cylinder may be provided on the cylinder body through a retracting mechanism such as a knock body.

また、外筒体の色を軸筒と略同色又は同系色とすると、軸筒と外筒体との一体感が得られやすく好ましいが、外筒体の色は特に限定されるものではない。また、摩擦体の色は、特に限定されるものではないが、無色透明、無色半透明色、白色等とすることで、部品の共通化等のコストダウンに繋がるため、好ましい。   Further, when the color of the outer cylinder is substantially the same color or a similar color to the shaft cylinder, it is preferable that a sense of unity between the shaft cylinder and the outer cylinder is easily obtained, but the color of the outer cylinder is not particularly limited. Further, the color of the friction body is not particularly limited, but it is preferable to use colorless and transparent, colorless and translucent color, white, etc., because it leads to cost reduction such as common use of parts.

また、本実施形態では、後軸に設けた雄ねじ部と外筒体内面の雌ねじ部とを螺着することが、繰り返しの着脱による装着力の低下が抑制できるので好ましいが、凹凸嵌合、乗り越し嵌合、圧入装着など、摩擦体を保護する構造であれば、後軸と外筒体の装着構造は特に限定されるものではない。   Further, in the present embodiment, it is preferable to screw the male thread portion provided on the rear shaft and the female thread portion on the inner surface of the outer cylindrical body, since a decrease in mounting force due to repeated attachment and detachment can be suppressed. As long as the structure protects the friction body, such as fitting or press fitting, the mounting structure of the rear shaft and the outer cylinder is not particularly limited.

外筒体の形状も特に限定されるものではなく、実施形態のように、後端を概ね閉鎖して摩擦体の摩擦部の側面及び後端部の略全体を覆う形状とし、摩擦体の摩擦部を保護することが最も好ましいが、後端(一方の端部)を開口し、開口端を第二摩擦部とした形状であってもよい。尚、外筒体の開口端を第二摩擦部とした場合には、摩擦部が、外筒体の一方の端部よりも長手方向において他方の端部側に位置し、第二摩擦部の使用時に、摩擦部が紙面に当接し難くすることが好ましい。   The shape of the outer cylindrical body is not particularly limited, and as in the embodiment, the rear end is generally closed so as to cover the side surface of the friction part of the friction body and substantially the entire rear end part. Although it is most preferable to protect the portion, the shape may be such that the rear end (one end portion) is opened and the open end is the second friction portion. When the opening end of the outer cylinder is the second friction part, the friction part is located on the other end side in the longitudinal direction from one end of the outer cylinder, and the second friction part In use, it is preferable that the friction portion does not easily contact the paper surface.

本発明の熱変色性筆記具は、利便性を鑑みて出没式筆記具であることが好ましいが、キャップ式筆記具等、熱変色性筆記具として広く利用可能である。   The thermochromic writing instrument of the present invention is preferably an in / out type writing instrument in view of convenience, but can be widely used as a thermochromic writing instrument such as a cap-type writing instrument.

1、101 熱変色性筆記具
2 前軸
3 中間軸
3A 当接部
3B 長孔
4 連結具
5 先部材
6 後軸
6A 窓孔
6B 突起部
6C 雄ねじ部
7 回転カム
8 操作体
8A 操作部
8B 押圧部
9、109 摩擦体
9A、109A 摩擦部
9B、109B 突部
10 弾発部材
11 弾発体
12 外筒体
13 クリップ
14 筆記体
15 インキ収容筒
16 チップホルダー
17 筆記先端部
19 尾栓
20、120 外筒体
20A、120A 摩擦部
20B 装着部
120B 硬質装着部
20C、120C 貫通孔
120D 指先当接部
DESCRIPTION OF SYMBOLS 1,101 Thermochromic writing instrument 2 Front shaft 3 Intermediate shaft 3A Contact part 3B Long hole 4 Connection tool 5 Front member 6 Rear shaft 6A Window hole 6B Protrusion part 6C Male thread part 7 Rotating cam 8 Operation body 8A Operation part 8B Press part 9, 109 Friction body 9A, 109A Friction part 9B, 109B Protrusion part 10 Elastic member 11 Elastic body 12 Outer cylindrical body 13 Clip 14 Writing body 15 Ink storage cylinder 16 Tip holder 17 Writing tip 19 Tail plug 20, 120 Outside Cylindrical body 20A, 120A Friction part 20B Mounting part 120B Hard mounting part 20C, 120C Through hole 120D Fingertip contact part

Claims (4)

軸筒内に収容した筆記体を、弾発体によって、軸筒の後端方向に向かって、摺動自在に付勢して収容してあり、出没機構を作動することで前記筆記体の筆記先端部を、前記軸筒の先端開口部から出没可能としてあり、前記軸筒の後方の端部に、熱変色性インキの筆跡を摩擦し、その際に生じる摩擦熱で前記熱変色性インキの筆跡を熱変色可能なゴム状弾性を有する軟質樹脂からなる摩擦部を有する摩擦体を具備してなる熱変色性筆記具であって、前記摩擦体の側面の外側に、外筒体を着脱自在に装着するとともに、前記外筒体は、少なくとも後方の端部に、前記熱変色性インキの筆跡を摩擦し、その際に生じる摩擦熱で前記熱変色性インキの筆跡を熱変色可能なゴム状弾性を有する軟質樹脂からなる第二摩擦部を有してなり、当該第二摩擦部が、貫通孔と、該貫通孔以外は後端を閉鎖した後端部と、円筒状の側面を有し、前記第二摩擦部が、前記摩擦体の摩擦部の側面及び後端部の略全体を覆うことを特徴する熱変色性筆記具。 The cursive body accommodated in the shaft cylinder is slidably biased toward the rear end direction of the shaft cylinder by the elastic body, and the writing body is operated by operating the retracting mechanism. The tip portion can be projected and retracted from the tip opening portion of the shaft tube, and the handwriting of the thermochromic ink is rubbed to the rear end portion of the shaft tube, and the thermochromic ink of the thermochromic ink is generated by frictional heat generated at that time. A thermochromic writing instrument comprising a friction body having a friction portion made of a soft resin having rubber-like elasticity capable of thermally discoloring a handwriting, wherein an outer cylindrical body is detachable on the outside of the side surface of the friction body The outer cylindrical body is a rubber-like elastic capable of rubbing the handwriting of the thermochromic ink at least on the rear end and thermally changing the handwriting of the thermochromic ink by frictional heat generated at that time. it has a second friction portion made of a soft resin having a said second friction portion A through hole, a rear end portion other than the through hole and a rear end portion closed, and a cylindrical side surface, wherein the second friction portion is substantially the entire side surface and rear end portion of the friction body. thermochromic writing instrument, characterized in that the covering. 前記外筒体の内面及び/又は側面に、硬質樹脂からなり、前記軸筒と装着する硬質装着部を具備することを特徴とする請求項1に記載の熱変色性筆記具。 The inner surface and / or sides of the outer cylindrical body, made of hard resin, thermochromic writing instrument according to claim 1, characterized in that it comprises a rigid mounting portion for mounting said barrel. 前記外筒体の側面に指先当接部を設けるとともに、該指先当接部を硬質樹脂で形成したことを特徴とする請求項1または2に記載の熱変色性筆記具。 The thermochromic writing instrument according to claim 1 or 2, wherein a fingertip abutting portion is provided on a side surface of the outer cylindrical body, and the fingertip abutting portion is formed of a hard resin. 前記外筒体の明度が、前記摩擦体の明度よりも小さいことを特徴とする請求項1ないし3の何れか1項に記載の熱変色性筆記具。 The thermochromic writing instrument according to any one of claims 1 to 3, wherein the brightness of the outer cylinder is smaller than the brightness of the friction body.
JP2012284671A 2012-12-27 2012-12-27 Thermochromic writing instrument Active JP6301580B2 (en)

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Publication number Priority date Publication date Assignee Title
JP2016040082A (en) * 2014-08-12 2016-03-24 三菱鉛筆株式会社 Friction body
JP6544912B2 (en) * 2014-11-26 2019-07-17 三菱鉛筆株式会社 Writing instrument with erasing member
JP6472239B2 (en) * 2014-12-26 2019-02-20 株式会社パイロットコーポレーション Thermochromic writing instrument
JP6472240B2 (en) * 2014-12-26 2019-02-20 株式会社パイロットコーポレーション Thermochromic writing instrument
JP6818073B2 (en) * 2019-03-29 2021-01-20 三菱鉛筆株式会社 Writing tool with erasing member
JP7018916B2 (en) * 2019-06-19 2022-02-14 三菱鉛筆株式会社 Stationery with erasing member

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JP4282352B2 (en) * 2003-03-27 2009-06-17 株式会社パイロットコーポレーション Knock part of knock type writing instrument
JP2009066892A (en) * 2007-09-13 2009-04-02 Pilot Ink Co Ltd Friction implement
JP5656365B2 (en) * 2009-04-27 2015-01-21 パイロットインキ株式会社 Thermochromic writing instrument

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