JP6040020B2 - Thermochromic writing instrument - Google Patents

Thermochromic writing instrument Download PDF

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JP6040020B2
JP6040020B2 JP2012272030A JP2012272030A JP6040020B2 JP 6040020 B2 JP6040020 B2 JP 6040020B2 JP 2012272030 A JP2012272030 A JP 2012272030A JP 2012272030 A JP2012272030 A JP 2012272030A JP 6040020 B2 JP6040020 B2 JP 6040020B2
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clip
writing instrument
friction
thermochromic
thermochromic writing
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JP2014117802A (en
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俊宏 小野
俊宏 小野
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Pilot Corp KK
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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Description

本発明は、筆記具を構成する筒体の一方の端部外周面に、該筒体の他方の端部に向かって、長手方向に沿って延びるクリップを具備し、該クリップに、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摩擦体を装着してなる熱変色性筆記具に関する。   The present invention comprises a clip extending along the longitudinal direction toward the other end of the cylinder on the outer peripheral surface of one end of the cylinder constituting the writing instrument, and the thermochromic ink is provided on the clip. The thermochromic writing instrument is equipped with a rubber-like elastic friction body that can thermally discolor the thermochromic ink with the frictional heat generated at the time.

従来から、筆記具を構成する筒体の一方の端部外周面に、該筒体の他方の端部に向かって、長手方向に沿って延びるクリップを具備してなる筆記具はよく知られていて、特開２００４−３３０５１３号「塗布具用クリップ組付け構造」等に開示されている。   Conventionally, a writing instrument comprising a clip extending along the longitudinal direction toward the other end of the cylinder on the outer peripheral surface of one end of the cylinder constituting the writing instrument is well known, Japanese Patent Application Laid-Open No. 2004-330513 “clip assembly structure for applicator” and the like.

こうしたクリップを具備してなる筆記具において、特開２０１２−１９２７３０号公報「筆記具用クリップ及び筆記具」」では、クリップに飾り部材を係止し、装着した飾り部材を摩擦体として、熱変色性インキの筆跡を熱変色可能とした筆記具が開示されている。   In a writing instrument provided with such a clip, Japanese Patent Application Laid-Open No. 2012-192730 “Clip and Writing Instrument for Writing Instruments” locks a decorative member on the clip and uses the mounted decorative member as a friction body to make a thermochromic ink. A writing instrument is disclosed in which handwriting can be discolored by heat.

特開２００４−３３０５１３号公報JP 2004-330513 A 特開２０１２−１９２７３０号公報JP 2012-192730 A

しかし、前記した特許文献２など、クリップに摩擦体を装着する場合、摩擦体の使用時にクリップと紙面等の被筆記面が当接しないように、クリップからの突出量を大きくする必要があった。そのため、ペンケースなどに収納する場合やポケットに挟持したときに邪魔になりやすい等の課題があった。   However, when attaching a frictional body to the clip, such as the above-mentioned Patent Document 2, it is necessary to increase the protruding amount from the clip so that the clip and a writing surface such as a paper surface do not contact when the frictional body is used. . Therefore, there are problems such as being easily disturbed when stored in a pen case or when held in a pocket.

こうした問題を鑑みて、クリップを小さくすること、摩擦体を薄くする等、クリップからの突出量を小さくすることが考えられるが、前者は、クリップ自体を小さくすることでクリップ強度が低下する恐れがあり、繰り返しの使用などによってクリップが破損する恐れがあり、後者は、摩擦体使用時の感触が悪くなるとともに、摩擦部が弾性変形し難くなり、クリップと摩擦体の装着部への応力が増大し、摩擦体がクリップから外れやすく、移動時などで摩擦部が損傷すると、クリップが露出する恐れがあった。   In view of these problems, it is conceivable to reduce the amount of protrusion from the clip, such as making the clip smaller or making the friction body thinner, but the former may reduce the clip strength by making the clip itself smaller. There is a risk that the clip may be damaged by repeated use, etc. The latter causes the feeling when using the friction body to deteriorate and the friction part becomes difficult to elastically deform, increasing the stress on the clip and the attachment part of the friction body However, if the friction body is easily detached from the clip and the friction portion is damaged during movement, the clip may be exposed.

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、クリップに装着した摩擦体の使用時に、クリップが当接し難い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 prior arts, and it is an object of the present invention to provide a thermochromic writing instrument in which the clip does not easily come into contact when a friction body attached to the clip is used.

本発明は、前記問題を解決するために、筆記具を構成する筒体の一方の端部外周面に、前記筒体の他方の端部に向かって、長手方向に沿って延びるクリップを具備し、該クリップに、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摩擦体を装着してなる熱変色性筆記具であって、前記摩擦体が、少なくとも前記クリップの表面より外方に***した前記熱変色性インキの筆跡を摩擦する摩擦部を有するとともに、前記クリップの表面から***する前記摩擦部の肉厚が、前記摩擦部の他方の端部の肉厚に対し、一方の端部の肉厚を厚くしてあることを特徴する。   In order to solve the above problem, the present invention comprises a clip extending along the longitudinal direction toward the other end of the cylinder on the outer peripheral surface of one end of the cylinder constituting the writing instrument, A thermochromic writing instrument comprising a frictional body having rubbery elasticity capable of thermally discoloring the handwriting of the thermochromic ink by frictional heat generated at the time when the handwriting of the thermochromic ink is rubbed on the clip. The friction body has a friction portion that rubs at least the thermochromic ink handwriting raised outward from the surface of the clip, and the thickness of the friction portion raised from the surface of the clip is: The thickness of the one end portion is made thicker than the thickness of the other end portion of the friction portion.

また、前記熱変色性筆記具の軸心からクリップの表面までの距離が、前記摩擦部の他方の端部に対向する位置に対し、前記摩擦部の一方の端部に対向する位置までの距離が短いことを特徴する。   Further, the distance from the axial center of the thermochromic writing instrument to the surface of the clip is a distance from the position facing the other end of the friction part to the position facing the one end of the friction part. Characterized by shortness.

また、前記熱変色性筆記具の軸心からの距離が最も離間している摩擦部の頂部が、前記摩擦部の一方の端部に位置することを特徴する。   Further, the top of the friction part that is the farthest from the axis of the thermochromic writing instrument is located at one end of the friction part.

本願発明の第１の構成によれば、少なくとも前記クリップの表面より外方に***した前記熱変色性インキの筆跡を摩擦する摩擦部を有するとともに、前記クリップの表面からの前記摩擦部の肉厚が、前記摩擦部の一方の端部の肉厚に対し、他方の端部の肉厚を厚くすることで、摩擦体を使用し易く、且つ摩擦体を外れ難くする効果を奏する。これは、クリップ表面より外方に***した摩擦部を、紙面等に筆記した熱変色性インキの筆跡を摩擦するときに、摩擦体の摩擦部をクリップの他方の端部に設けることで、クリップが直接、紙面等に当接し難く、且つ他方の端部の肉厚を厚くすることで、摩擦体が弾性変形し易く、摩擦体とクリップとの装着部への応力を緩和するためである。   According to the first configuration of the present invention, at least the frictional portion that rubs the handwriting of the thermochromic ink that protrudes outward from the surface of the clip, and the thickness of the frictional portion from the surface of the clip. However, by increasing the thickness of the other end portion relative to the thickness of one end portion of the friction portion, there is an effect that the friction body can be easily used and the friction body is hardly detached. This is because when the friction part protruding outward from the clip surface is rubbed against the handwriting of the thermochromic ink written on the paper or the like, the friction part of the friction body is provided at the other end of the clip. This is because the friction body is easily elastically deformed by reducing the stress on the mounting portion between the friction body and the clip, by making it difficult to directly contact the paper surface or the like and increasing the thickness of the other end.

本願発明の第２の構成によれば、前記熱変色性筆記具の軸心からクリップの表面までの距離が、前記摩擦部の一方の端部に対向する位置に対し、前記摩擦部の他方の端部に対向する位置までの距離が短いために、前記熱変色性筆記具の軸心から摩擦部の表面までの距離を長くすることなく、摩擦体の摩擦部の肉厚を効率的に厚くすることができる。   According to the second configuration of the present invention, the distance from the axial center of the thermochromic writing instrument to the surface of the clip is opposite to the one end of the friction part, and the other end of the friction part. Since the distance to the position facing the part is short, the thickness of the friction part of the friction body is efficiently increased without increasing the distance from the axis of the thermochromic writing instrument to the surface of the friction part. Can do.

本願発明の第３の構成によれば、前記熱変色性筆記具の軸心からの距離が最も離間している摩擦部表面の頂部が、前記摩擦部の一方の端部に位置することで、摩擦部を、紙面等に当接しやすく、筆記した熱変色性インキの筆跡を摩擦しやすくすることができる。   According to the third configuration of the present invention, the top portion of the surface of the friction portion that is the farthest from the axis of the thermochromic writing instrument is located at one end of the friction portion, so that the friction The portion can be easily brought into contact with the paper surface or the like, and the written hand of the thermochromic ink can be easily rubbed.

尚、本発明の筆記具を構成する筒体には、軸筒やキャップ等、筆記具を構成する従来から知られている筒体を適宜用いることができる。   In addition, as the cylinder constituting the writing instrument of the present invention, a conventionally known cylinder constituting the writing instrument such as a shaft cylinder or a cap can be used as appropriate.

また、摩擦体には、ゴム状弾性を有する弾性体、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、エラストマー等が挙げられ、適宜選択して用いることができる。また、硬さは、ショアＡ硬度４０以上、１００以下が好ましい。   Further, the friction body includes an elastic body having rubber-like elasticity, such as silicone rubber, fluorine rubber, chloroprene rubber, nitrile rubber, polyester rubber, ethylene propylene diene rubber (EPDM), styrene elastomer, ester elastomer, Examples include olefin-based elastomers, rubber having elasticity like rubber, elastomers, and the like, which can be appropriately selected and used. Further, the hardness is preferably a Shore A hardness of 40 or more and 100 or less.

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、クリップに装着した摩擦体の使用時に、クリップが当接し難い熱変色性筆記具を提供することができた。   The present invention can provide a thermochromic writing instrument in which the clip does not easily come into contact when the friction body attached to the clip is used.

実施形態１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 Embodiment 1. 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Ａ−Ａ拡大断面図である。It is an AA expanded sectional view 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縦断面図である。It is a longitudinal cross-sectional view which shows the thermochromic writing instrument of Embodiment 2. 図５における一部省略した要部拡大断面図である。FIG. 6 is an enlarged cross-sectional view of a main part, partially omitted in FIG. 5.

図１〜図３に、実施形態１の熱変色性筆記具１を示す。筆記具１は、前軸２と後軸３を螺着して得た軸筒本体内に収容したボールペンレフィルを、前軸２内に配設したコイルスプリング１２によって、後軸３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。また、後軸３内には、回転カム４からなる出没機構が内設され、図示はしていないが、後軸３の内面には、カム溝を設けてある。   The thermochromic writing instrument 1 of Embodiment 1 is shown in FIGS. The writing instrument 1 has a ballpoint pen refill accommodated in a shaft body obtained by screwing the front shaft 2 and the rear shaft 3 in a rear end direction of the rear shaft 3 by a coil spring 12 disposed in the front shaft 2. It is energized and accommodated slidably. Further, a retracting mechanism comprising a rotating cam 4 is provided in the rear shaft 3. Although not shown, a cam groove is provided on the inner surface of the rear shaft 3.

回転カム４の後方には、後軸３の後端から後方に突出するように操作体５が配設される。操作体５の先端部には、回転カム５を前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）を具備している。   An operating body 5 is disposed behind the rotating cam 4 so as to protrude rearward from the rear end of the rear shaft 3. The distal end portion of the operating body 5 is provided with a plurality of serrated cam portions (not shown) at the distal end so as to move the rotating cam 5 forward and induce rotation.

後軸３の後端部の側面には、外方に突出する突部３Ａを一体に設けてあり、この突部３Ａにクリップ６を装着してある。具体的には、後軸３の後端部の側面に、外方に向かって突出する突部３Ａを設け、この突部３Ａをクリップ６に設けた内外を連通する係合孔６Ｃに挿通し、突部３Ａに設けた凸部（図示せず）と係合孔６Ｃ内に設けた凸部（図示せず）とを落とし込み係合することで、後軸３の後端部（一方の端部）から先端部（他方の端部）方向に、長手方向に沿って延びるクリップ６を装着してある。   On the side surface of the rear end portion of the rear shaft 3, a protruding portion 3A protruding outward is integrally provided, and a clip 6 is attached to the protruding portion 3A. Specifically, a protrusion 3A that protrudes outward is provided on the side surface of the rear end portion of the rear shaft 3, and the protrusion 3A is inserted into an engagement hole 6C that communicates with the inside and outside of the clip 6. The rear end portion (one end) of the rear shaft 3 is dropped and engaged with a convex portion (not shown) provided on the protrusion 3A and a convex portion (not shown) provided in the engagement hole 6C. The clip 6 extending along the longitudinal direction is attached in the direction from the first part to the front end part (the other end part).

また、クリップ６の表面には、ポリエステル系エラストマーかなる摩擦体７を装着してある。摩擦体７は、クリップ６の表面６Ａより外方に***した摩擦部７Ａと、クリップ６の裏面６Ｂよりも後軸３側に突出した裏面部７Ｃとを得ている。具体的には、摩擦体７は、クリップ６の表面６Ａから突出する突部３Ａを覆うとともに、このクリップ表面６Ａから外方に***した摩擦部７Ａと、クリップ６の裏面６Ｂ方向に向かって延出する脚部７Ｄと、クリップ６の裏面６Ｂに位置する裏面部７Ｂ、７Ｃとを設けてあり、摩擦体７の摩擦部７Ａと裏面部７Ｂ、７Ｃ間でクリップ６を保持して装着してある。また、クリップ６の後端部側の裏面部７Ｃでは、クリップ６と後軸３間で裏面部７Ｃを圧縮挟持して保持している。   A friction body 7 made of a polyester elastomer is attached to the surface of the clip 6. The friction body 7 has a friction portion 7A protruding outward from the front surface 6A of the clip 6 and a back surface portion 7C protruding from the rear surface 6B of the clip 6 to the rear shaft 3 side. Specifically, the friction body 7 covers the protrusion 3A protruding from the surface 6A of the clip 6, and extends toward the friction portion 7A protruding outward from the clip surface 6A and the back surface 6B of the clip 6. A leg portion 7D to be taken out and back surface portions 7B and 7C located on the back surface 6B of the clip 6 are provided, and the clip 6 is held and attached between the friction portion 7A and the back surface portions 7B and 7C of the friction body 7. is there. Further, in the back surface portion 7C on the rear end side of the clip 6, the back surface portion 7C is compressed and held between the clip 6 and the rear shaft 3.

摩擦体７を装着したクリップ６の後端部は、クリップ６の後端に向かって、熱変色性筆記具の軸心Ｊ側へ傾斜して設けて、熱変色性筆記具の軸心Ｊから摩擦部７Ａの先端部に対向するクリップ表面６Ａまでの距離Ｈに比べ、熱変色性筆記具の軸心Ｊからクリップ表面６Ａまでの距離Ｋを短くすることで、熱変色性筆記具の軸心Ｊから距離が一定距離であっても摩擦部７Ａの先端部（他方の端部）側におけるクリップ表面６Ａからの肉厚Ｌに対し、摩擦部７Ａの後端部（一方の端部）側のクリップ表面７Ａからの肉厚Ｍを厚くしてある。さらにまた、前記熱変色性筆記具の軸心からの距離が最も離間している摩擦部７Ａの頂部Ｔは、摩擦部７Ａの長手方向において、摩擦部７Ａの後端部に設けてあり、摩擦部７Ａの後端部が、最も厚い肉厚となる部分としてある。   The rear end portion of the clip 6 to which the friction body 7 is attached is provided to be inclined toward the axis J side of the thermochromic writing instrument toward the rear end of the clip 6, so that the friction portion extends from the axis J of the thermochromic writing instrument. The distance from the axis J of the thermochromic writing instrument can be reduced by shortening the distance K from the axis J of the thermochromic writing instrument to the clip surface 6A compared to the distance H to the clip surface 6A facing the tip of 7A. Even if the distance is constant, the thickness L from the clip surface 6A on the front end (the other end) side of the friction portion 7A is from the clip surface 7A on the rear end (one end) side of the friction portion 7A. The wall thickness M is increased. Furthermore, the top portion T of the friction portion 7A that is the farthest from the axis of the thermochromic writing instrument is provided at the rear end portion of the friction portion 7A in the longitudinal direction of the friction portion 7A. The rear end of 7A is the thickest part.

ボールペンレフィル８は、ステンレス鋼線材からなるチップ本体に、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、φ０．３８ｍｍのタングステンカーバイド製のボールを載置し、チップ先端部のかしめ部を内側にかしめることにより、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１１を、インキ収容筒９の先端部に、チップホルダー１０を介して装着してある。   The ball-point refill 8 has a chip body made of a stainless steel wire, a ball holding chamber, an ink circulation hole in the center of the ball holding chamber, and a radial line that communicates with the ink circulation hole and does not reach the chip rear hole. A ball of tungsten carbide with a diameter of 0.38 mm is placed on the bottom wall of the ball holding chamber, and a part of the ball is attached to the tip of the tip by caulking the tip of the tip. A ballpoint pen tip 11 that is rotatably held so as to protrude from the edge is attached to the tip of the ink containing cylinder 9 via a tip holder 10.

また、インキ収容筒９内には、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の熱変色性の水性ボールペン用インキ（図示せず）と、このインキの後端に、グリース状のインキ追従体（図示せず）を直に収容してある。   The ink containing cylinder 9 contains a reversible thermochromic microcapsule pigment having an average particle size of 0.5 μm, and an ink viscosity at 1 rpm in an EM type rotational viscometer is 1020 mPa · s (25 ° C.), A thermochromic water-based ballpoint pen ink (not shown) having an ink viscosity at 100 rpm of 84 mPa · s (25 ° C.) and a shear thinning index of 0.48, and a grease-like ink at the rear end of the ink A follower (not shown) is accommodated directly.

熱変色性筆記具１を使用するには、ボールペンチップ１１の先端部が前軸２の先端開口部２Ａに没入した状態から、後軸３の後方に突出して配設した操作体５をコイルスプリング１２の付勢力に抗して、前軸２の先端開口部２Ａ方向に押圧操作すると、操作体５のカム部が回転カム４を作動させ、ボールペンチップ１１の先端部を、前軸２の先端開口部２Ａから突出した状態を維持して筆記することができる。前記した出没機構は、回転カム４からなる従来から知られている出没機構であって、ボールペンチップ１１を、前軸２の先端開口部２Ａから出没可能とするものである。   In order to use the thermochromic writing instrument 1, the operating body 5 that is disposed so as to protrude rearward of the rear shaft 3 from the state in which the front end portion of the ballpoint pen tip 11 is immersed in the front end opening portion 2 </ b> A of the front shaft 2 is provided with the coil spring 12. When the pressing operation is performed in the direction of the front end opening 2A of the front shaft 2 against the urging force of the front shaft 2, the cam portion of the operating body 5 operates the rotating cam 4, and the front end of the ballpoint pen tip 11 is moved to the front end opening of the front shaft 2. Writing can be performed while maintaining the state of protruding from the portion 2A. The above-described in / out mechanism is a conventionally in-and-out mechanism composed of the rotating cam 4 and allows the ball-point pen tip 11 to enter and exit from the front end opening 2A of the front shaft 2.

また、図４に示すとおり、この摩擦体７の摩擦部７Ａをノート等の筆記面Ｕ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又は熱変色させることができる。   Further, as shown in FIG. 4, the frictional portion 7A of the friction body 7 is brought into pressure contact with the handwriting written on the writing surface U such as a notebook, and the heat generated by rubbing is used to thermally decolorize the handwriting of the thermochromic ink. Can be discolored by heat.

図５、図６に、実施形態２の熱変色性筆記具２１を示す。熱変色性筆記具２１は、クリップ２６に第一係合孔２６Ｃ、後軸２３に第二係合孔２３Ａを設け、摩擦部２７Ａからクリップの裏面方向に向かって延出する脚部２７Ｄを、クリップ２６の表面２６Ａ側から第一係合孔２６Ｃを挿通し、第二係合孔２３Ａに挿通するとともに、摩擦体２７の脚部２７Ｄに第一係止部２７Ｂ及び第二係止部２７Ｃを設け、第一係合孔２６Ｃに第一係止部２７Ｂを係止し、前記第二係合孔２３Ａに第二係止部２７Ｃを係止して装着し、クリップ２６と後軸２３が、摩擦体２７の脚部２７Ｄを介して連設した以外は、実施形態１と同様にして熱変色性筆記具を得ている。   5 and 6 show a thermochromic writing instrument 21 according to the second embodiment. The thermochromic writing instrument 21 is provided with a first engagement hole 26C in the clip 26, a second engagement hole 23A in the rear shaft 23, and a leg portion 27D extending from the friction portion 27A toward the back surface of the clip. 26 is inserted through the first engagement hole 26C from the surface 26A side and through the second engagement hole 23A, and the first locking portion 27B and the second locking portion 27C are provided on the leg portion 27D of the friction body 27. The first engagement portion 27B is engaged with the first engagement hole 26C, the second engagement portion 27C is engaged with the second engagement hole 23A, and the clip 26 and the rear shaft 23 are frictionally attached. A thermochromic writing instrument is obtained in the same manner as in the first embodiment except that it is provided continuously through the leg 27D of the body 27.

摩擦体２７の脚部２７Ｄに設けた第一係止部２７Ｂは、クリップ２６の裏面２６Ｂに位置し、且つクリップ２６の裏面２６Ｂよりも後軸２３側に突出した裏面部とを兼備している。また、第二係止部２７Ｅは、後軸２３内に位置して装着してある。   The first locking portion 27B provided on the leg portion 27D of the friction body 27 is located on the back surface 26B of the clip 26 and also has a back surface portion that protrudes toward the rear shaft 23 from the back surface 26B of the clip 26. . Further, the second locking portion 27E is positioned and mounted in the rear shaft 23.

また、摩擦体２７の脚部２７Ｄは、クリップ表面２６Ａと後軸２３の内面間で伸張した状態で装着してあり、常時、クリップ２６を後軸２３側に付勢する力が加わるようにしてある。さらにまた、クリップ２６と後軸２３を、摩擦体２７の脚部２７Ｄを介して連設することで、クリップ２６を厚手のポケット等に挟持する場合でも、クリップ２６の先端を後軸から大きく離間することができ、且つゴム状弾性によって元に戻り易い。   Further, the leg 27D of the friction body 27 is mounted in an extended state between the clip surface 26A and the inner surface of the rear shaft 23 so that a force for urging the clip 26 toward the rear shaft 23 is always applied. is there. Furthermore, by connecting the clip 26 and the rear shaft 23 via the legs 27D of the friction body 27, even when the clip 26 is held in a thick pocket or the like, the tip of the clip 26 is greatly separated from the rear shaft. And can be easily restored by rubber-like elasticity.

摩擦体とクリップの装着方法は、特に限定されるものではなく、凹凸嵌合、乗り越し嵌合、圧入嵌合、二色成形等が適宜選択することができるが、摩擦体が、クリップの裏面よりも筒体側に突出した裏面部を有することで、クリップ表面より外方に***した摩擦部を、紙面等に筆記した熱変色性インキの筆跡を摩擦するときに、直接、紙面等に当接しない裏面部によって、表面側の摩擦体の移動を抑制することができるので好ましい。   The attachment method of the friction body and the clip is not particularly limited, and uneven fitting, overpass fitting, press-fit fitting, two-color molding, etc. can be appropriately selected. Also, it has a back part protruding to the cylinder side, so that the friction part protruding outward from the clip surface does not directly contact the paper surface when rubbing the handwriting of the thermochromic ink written on the paper surface etc. The back surface portion is preferable because the movement of the friction member on the front surface side can be suppressed.

また、裏面部の少なくとも一部が、クリップと後軸間に位置するとともに、摩擦部と裏面部とで、前記クリップを保持することで、摩擦体の移動抑制を高めることができる。また、ゴム状弾性を有する摩擦体が、クリップと後軸間に挟持してあることで、クリップをポケット等に挟持した時、クリップの撓みによるクリップと後軸との連設する部分に生じる応力を、挟持した摩擦体が緩和するため、クリップの破損や装着力の低下を抑制する効果も奏する。   In addition, at least a part of the back surface portion is located between the clip and the rear shaft, and holding the clip between the friction portion and the back surface portion can increase the movement suppression of the friction body. In addition, since the friction body having rubber-like elasticity is sandwiched between the clip and the rear shaft, when the clip is sandwiched between the pocket and the like, the stress generated in the portion where the clip and the rear shaft are connected due to the bending of the clip Since the sandwiched friction body relaxes, there is also an effect of suppressing breakage of the clip and reduction of the mounting force.

本実施例では、便宜上、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を筒体としてあってもよい。   In this embodiment, for the sake of convenience, a shaft cylinder (rear shaft) of a retractable writing instrument provided with a retracting mechanism composed of a rotating cam is illustrated as a cylindrical body. However, if the cylindrical body constitutes the writing instrument, rotation feeding, etc. The intruding mechanism is not particularly limited, and a shaft cylinder or a cap of a cap-type writing instrument may be used as a cylinder.

また、本実施形態では、便宜上、摩擦体を装着したクリップの後端部は、クリップの後端に向かって、熱変色性筆記具の軸心側へ傾斜して設けて、熱変色性筆記具の軸心からクリップ表面までの距離を短くするとともに、摩擦部の先端部（他方の端部）側におけるクリップ表面からの肉厚に対し、摩擦部の後端部（一方の端部）側のクリップ表面からの肉厚を厚くしてあるが、段部や凹部などによって、前記摩擦部の一方の端部に対向する位置に対し、前記摩擦部の他方の端部に対向する位置までの距離が短くしてあってもよい。   Further, in this embodiment, for convenience, the rear end portion of the clip on which the friction body is mounted is inclined toward the axial center side of the thermochromic writing instrument toward the rear end of the clip, and the shaft of the thermochromic writing instrument is provided. While shortening the distance from the core to the clip surface, the clip surface on the rear end (one end) side of the friction part with respect to the thickness from the clip surface on the front end (other end) side of the friction part However, the distance from the position facing one end of the friction part to the position facing the other end of the friction part is short due to the stepped part or the recessed part. It may be.

本発明の熱変色性筆記具は、出没式筆記具や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 can be widely used as a thermochromic writing instrument such as an in / out writing instrument and a cap-type writing instrument.

１、２１ 熱変色性筆記具
２ 前軸
２Ａ 先端開口部
３、２３ 後軸
３Ａ 突部
４ 回転カム
５ 操作体
６、２６ クリップ
６Ａ、２６Ａ クリップ表面
６Ｂ、２６Ｂ クリップ裏面
６Ｃ 係合孔
７、２７ 摩擦体
７Ａ、２７Ａ 摩擦部
７Ｂ、７Ｃ 裏面部
７Ｄ、２７Ｄ 脚部
８ ボールペンレフィル
９ インキ収容筒
１０ チップホルダー
１１ ボールペンチップ
１２ コイルスプリング
２３Ａ 第二係合孔
２６Ｃ 第一係合孔
２７Ｂ、２７Ｃ 第一係止部（裏面部）
２７Ｅ 第二係止部（裏面部）
Ｈ 摩擦部の他方の端部に対向するクリップ表面までの距離
Ｋ 摩擦部の一方の端部に対向するクリップ表面までの距離
Ｌ クリップ表面からの摩擦部の他方の端部の肉厚
Ｍ クリップ表面からの摩擦部の一方の端部の肉厚
Ｔ 摩擦部の頂部
Ｕ 筆記面 1, 21 Thermochromic writing instrument 2 Front shaft 2A Tip opening 3, 23 Rear shaft 3A Projection 4 Rotating cam 5 Operating body 6, 26 Clip 6A, 26A Clip surface 6B, 26B Clip back surface 6C Engagement hole 7, 27 Friction Body 7A, 27A Friction part 7B, 7C Back part 7D, 27D Leg part 8 Ball-point pen refill 9 Ink receiving cylinder 10 Tip holder 11 Ball-point pen tip 12 Coil spring 23A Second engagement hole 26C First engagement hole 27B, 27C First engagement Stop (back side)
27E Second locking part (back side)
H Distance to the clip surface facing the other end of the friction part K Distance to the clip surface facing one end of the friction part L Thickness of the other end of the friction part from the clip surface M Clip surface Thickness of one end of friction part from T T Top part of friction part U Writing surface

Claims (3)

筆記具を構成する筒体の一方の端部外周面に、前記筒体の他方の端部に向かって、長手方向に沿って延びるクリップを具備し、該クリップに、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摩擦体を装着してなる熱変色性筆記具であって、前記摩擦体が、少なくとも前記クリップ表面より外方に***した前記熱変色性インキの筆跡を摩擦する摩擦部を有するとともに、前記クリップ表面から***する前記摩擦部の肉厚が、前記摩擦部の他方の端部の肉厚に対し、一方の端部の肉厚を厚くしてあることを特徴とする熱変色性筆記具。 The outer peripheral surface of one end of the cylinder constituting the writing instrument is provided with a clip extending in the longitudinal direction toward the other end of the cylinder, and the clip of the thermochromic ink is rubbed on the clip. And a thermochromic writing instrument comprising a rubber-like elastic friction body capable of thermally discoloring the handwriting of the thermochromic ink with frictional heat generated at that time, wherein the friction body is at least the clip surface It has a friction part that rubs the handwriting of the thermochromic ink that protrudes more outward, and the thickness of the friction part that protrudes from the clip surface is relative to the thickness of the other end of the friction part, A thermochromic writing instrument characterized in that one end is thickened. 前記熱変色性筆記具の軸心からクリップ表面までの距離が、前記摩擦部の他方の端部に対向する位置に対し、前記摩擦部の一方の端部に対向する位置までの距離が短いことを特徴する請求項１に記載の熱変色性筆記具。 The distance from the axial center of the thermochromic writing instrument to the clip surface is shorter than the position facing the other end of the friction part to the position facing the one end of the friction part. The thermochromic writing instrument according to claim 1, which is characterized. 前記熱変色性筆記具の軸心からの距離が最も離間している摩擦部の頂部が、前記摩擦部の一方の端部に位置することを特徴する請求項１または２に記載の熱変色性筆記具。 3. The thermochromic writing instrument according to claim 1, wherein the top of the friction part that is farthest from the axis of the thermochromic writing instrument is located at one end of the friction part. 4. .
JP2012272030A 2012-12-13 2012-12-13 Thermochromic writing instrument Active JP6040020B2 (en)

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