JP2020104516A - Friction tool and thermochromic writing instrument - Google Patents

Friction tool and thermochromic writing instrument Download PDF

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JP2020104516A
JP2020104516A JP2019235530A JP2019235530A JP2020104516A JP 2020104516 A JP2020104516 A JP 2020104516A JP 2019235530 A JP2019235530 A JP 2019235530A JP 2019235530 A JP2019235530 A JP 2019235530A JP 2020104516 A JP2020104516 A JP 2020104516A
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friction
main body
convex portion
convex
thermochromic
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JP7391471B2 (en
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由明 大河原
Yoshiaki Ogawara
由明 大河原
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Pilot Corp
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Abstract

To provide a friction tool and a thermochromic writing instrument capable of easily visually recognizing a contact portion between a friction portion and a paper surface from the outside at the time of rubbing and reliably thermally discoloring a fine portion of a thermochromic handwriting.SOLUTION: A friction tool 1 comprises a friction portion 3 at the end of a main body 2 for rubbing a thermochromic handwriting and thermally discoloring the handwriting by frictional heat generated at that time. A non-annular convex portion 4 that protrudes outward in the axial direction is formed on the peripheral portion of the end portion of the main body 2. The convex portion 4 becomes the friction portion 3. A concave portion 5 is formed on the outer surface in the axial direction of the end portion of the main body 2 excluding the convex portion 4 so as to be opened radially outward and outwardly in the axial direction. The convex portion 4 is configured to be visible through the concave portion 5 during friction.SELECTED DRAWING: Figure 3

Description

本発明は、摩擦具及び熱変色性筆記具に関する。詳細には、熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部を備えた摩擦具及び熱変色性筆記具
に関する。
The present invention relates to a friction tool and a thermochromic writing tool. More specifically, the present invention relates to a friction tool and a thermochromic writing instrument that include a friction portion that rubs a thermochromic handwriting and causes the handcolor to discolor by frictional heat generated at that time.

従来、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該筆跡を熱変色可能な摩擦部として、環状に形成されたものが知られている。(例えば、特許文献1) BACKGROUND ART Conventionally, there is known an annularly formed friction portion that rubs a handwriting of a thermochromic ink and the handwriting can be thermally discolored by frictional heat generated at that time. (For example, Patent Document 1)

特開2009−107237号公報JP, 2009-107237, A

前記従来の環状の摩擦部は、摩擦時、摩擦部と紙面との接触部分が環状の摩擦部の反対側の端面に隠され、摩擦部と紙面との接触部分を外部より視認することができないおそれがあり、その場合、熱変色性の筆跡の細かい箇所を確実に熱変色させることが困難となる。 In the conventional annular friction portion, the contact portion between the friction portion and the paper surface is hidden by the end surface on the opposite side of the annular friction portion during friction, and the contact portion between the friction portion and the paper surface cannot be visually recognized from the outside. In such a case, it is difficult to surely thermally discolor the fine portion of the thermochromic handwriting.

本願発明は、前記従来の問題点を解決するものであって、摩擦時、摩擦部と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる摩擦具及び熱変色性筆記具を提供しようとするものである。
本発明で、「軸方向外方」とは摩擦部側(図面で上方)を指し、「軸方向内方」とはその反対側を指す。
The present invention is to solve the above-mentioned conventional problems, and at the time of rubbing, the contact portion between the friction portion and the paper surface can be easily visually recognized from the outside, and a fine portion of the thermochromic handwriting can be surely obtained. An object of the present invention is to provide a friction tool and a thermochromic writing instrument that can be thermally discolored.
In the present invention, the “outer axial direction” refers to the friction portion side (upper side in the drawing), and the “inward axial direction” refers to the opposite side.

本願の第1の発明は、熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部3を本体2の端部に備えた摩擦具であって、前記本体2の端部周縁部に軸方向外方に突出する非環状の凸部4が形成され、前記凸部4が前記摩擦部3となり、前記凸部4を除く前記本体2の端部の軸方向外面に、径方向外方に開口され且つ軸方向外方に開口される凹部5が形成され、摩擦時に前記凹部5を通して前記凸部4が視認可能に構成されることを要件とする。 A first invention of the present application relates to a friction tool including a friction portion 3 at an end portion of a main body 2 for rubbing a thermochromic handwriting and thermally discoloring the handwriting by frictional heat generated at that time. A non-annular convex portion 4 projecting outward in the axial direction is formed on the peripheral edge portion of the end portion, and the convex portion 4 serves as the friction portion 3, and the axial outer surface of the end portion of the main body 2 excluding the convex portion 4 At the same time, a concave portion 5 that is opened radially outward and axially outward is formed, and the convex portion 4 is configured to be visible through the concave portion 5 during friction.

前記第1の発明の摩擦具1は、前記構成により、摩擦時、摩擦部3と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 The friction tool 1 according to the first aspect of the present invention has the above-described configuration so that the contact portion between the friction portion 3 and the paper surface can be easily visually recognized from the outside during friction, and a portion with a small thermochromic handwriting can be reliably heated. Can be discolored.

本願の第2の発明は、前記第1の発明の摩擦具において、前記凸部4が、前記本体2の端部周縁部に間隔を置いて複数、配置されることを要件とする。 The second invention of the present application requires that, in the friction tool of the first invention, a plurality of the convex portions 4 are arranged at an end peripheral portion of the main body 2 at intervals.

前記第2の発明の摩擦具1は、前記構成により、摩擦時、本体2を把持した後、本体2を大きく回転することなく、何れかの摩擦部3を紙面に接触させて迅速に摩擦作業を開始でき、さらに、摩擦部3が複数箇所存在するため、一つの摩擦部3のみが磨耗することを抑え、長期にわたり各々の摩擦部3の適正な形状を維持できる。 With the above-described configuration, the friction tool 1 of the second aspect of the present invention quickly grips the main body 2 at the time of friction, and then any one of the friction portions 3 is brought into contact with the paper surface without rapidly rotating the main body 2 to quickly perform the friction work. Further, since there are a plurality of friction parts 3 at a plurality of positions, it is possible to prevent only one friction part 3 from being worn and to maintain an appropriate shape of each friction part 3 for a long period of time.

本願の第3の発明は、前記第1の発明または第2の発明の摩擦具において、前記凸部4が弾性材料により形成され、前記凸部4が径方向の可撓性を有することを要件とする。 A third invention of the present application is the friction tool according to the first invention or the second invention, wherein the convex portion 4 is formed of an elastic material, and the convex portion 4 has radial flexibility. And

前記第3の発明の摩擦具1は、前記構成により、摩擦時、凸部4が紙面との接触により径方向内方に変形し、摩擦部3と紙面との確実な接触が得られる。 With the above-described configuration, the friction tool 1 of the third aspect of the present invention allows the convex portion 4 to be deformed radially inward due to contact with the paper surface during friction, and reliable contact between the friction portion 3 and the paper surface can be obtained.

本願の第4の発明は、前記第1乃至第3の何れかの発明の摩擦具において、前記凸部4の頂部41の径方向外面(即ち凸部4の径方向の外方縁部)に弾性材料よりなる摩擦部3が設けられることを要件とする。 A fourth invention of the present application is the friction tool according to any one of the first to third inventions, wherein a radial outer surface of the top portion 41 of the convex portion 4 (that is, a radially outer edge portion of the convex portion 4) is provided. It is required that the friction part 3 made of an elastic material is provided.

前記第4の発明の摩擦具1は、前記構成により、摩擦時、本体2を紙面に対して垂直方向から一定角度だけ傾けることで、摩擦部3を紙面に確実に接触させることができる。尚、本発明は、前記凸部4の全体を弾性材料により構成されることを含む。 With the above-described configuration, the friction tool 1 of the fourth aspect of the present invention can surely bring the friction part 3 into contact with the paper surface by inclining the main body 2 from the direction perpendicular to the paper surface by a certain angle during friction. The present invention includes that the entire convex portion 4 is made of an elastic material.

本願の第5の発明は、前記第1乃至第4の何れかの発明の摩擦具において、前記凸部4が、支持部43と、該支持部43の径方向外面に設けられ且つ該支持部43と別材料からなる弾性材料よりなる摩擦部3とからなることを要件とする。 A fifth invention of the present application is the friction tool according to any one of the first to fourth inventions, wherein the convex portion 4 is provided on a support portion 43 and an outer surface in a radial direction of the support portion 43, and the support portion is provided. 43 and the friction part 3 made of an elastic material made of a different material.

前記第5の発明の摩擦具1は、前記構成により、支持部43の材料を適宜選択することより、摩擦時の凸部4の径方向内方への弾性変形量を自由に調節することができ、ソフトタッチからハードタッチまで自由に設定できる。 With the friction tool 1 according to the fifth aspect of the present invention, the amount of elastic deformation of the convex portion 4 inward in the radial direction at the time of friction can be freely adjusted by appropriately selecting the material of the support portion 43 according to the above configuration. Yes, you can freely set from soft touch to hard touch.

本願の第6の発明は、前記第1乃至第5の発明の摩擦具において、前記凸部4の径方向の反対側の前記本体2外面にガイド突起21が形成されることを要件とする。 The sixth invention of the present application is, in the friction tool of the first to fifth inventions, provided that a guide projection 21 is formed on the outer surface of the main body 2 opposite to the radial direction of the convex portion 4.

前記第6の発明の摩擦具1は、前記構成により、摩擦時、本体2を把持する際、ガイド突起21を指で挟持したり、ガイド突起21上に指を載置したりすることにより、凸部4(摩擦部3)の周方向の向きを容易に識別し、迅速に摩擦作業を開始できる。 The friction tool 1 according to the sixth aspect of the present invention is configured as described above, when the main body 2 is gripped at the time of friction, by sandwiching the guide protrusion 21 with a finger or placing a finger on the guide protrusion 21, The circumferential direction of the convex portion 4 (friction portion 3) can be easily identified, and the friction work can be started quickly.

本願の第7の発明は、熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部3を本体2の端部に備えた摩擦具であって、前記本体2の端部周縁部の外面に非環状の摩擦部3を備え、前記摩擦部3を除く前記本体2の端部に、前記摩擦部3の径方向内面が透視可能な透視部7が設けられることを要件とする。 A seventh invention of the present application is a friction tool including a friction portion 3 at an end of a main body 2 for rubbing a thermochromic handwriting and thermally discoloring the handwriting by frictional heat generated at that time. A non-circular friction part 3 is provided on the outer surface of the peripheral edge of the end part of the main body 2, and a see-through part 7 through which the radial inner surface of the friction part 3 can be seen is provided at the end part of the main body 2 excluding the friction part 3. Is a requirement.

前記第7の発明の摩擦具1は、前記構成により、摩擦時、摩擦部3と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 According to the friction tool 1 of the seventh invention, the contact portion between the friction portion 3 and the paper surface can be easily visually recognized from the outside during friction due to the above-described configuration, and the portion of the thermochromic handwriting that is fine can be surely heated. Can be discolored.

本願の第8の発明は、前記第7の発明の摩擦具において、前記摩擦部3が、前記本体2の端部周縁部に間隔を置いて複数、設けられ、前記各々の摩擦部3の相互間に前記透視部7が形成されることを要件とする。 An eighth invention of the present application is the friction tool according to the seventh invention, wherein a plurality of the friction portions 3 are provided at intervals on the peripheral edge portion of the end portion of the main body 2, and the friction portions 3 of the respective friction portions 3 are mutually provided. It is required that the see-through part 7 is formed between them.

前記第8の摩擦具1は、前記構成により、摩擦時、本体2を把持した後、本体2を大きく回転することなく、何れかの摩擦部3を紙面に接触させて迅速に摩擦作業を開始でき、さらに、摩擦部3が複数箇所存在するため、一つの摩擦部3のみが磨耗することを抑え、長期にわたり各々の摩擦部3の適正な形状を維持できる。 With the above-described structure, the eighth friction tool 1 starts the friction work by holding the main body 2 during friction and then contacting any one of the friction portions 3 with the paper surface without rotating the main body 2 largely. In addition, since there are a plurality of friction parts 3, it is possible to prevent only one friction part 3 from being worn and to maintain the proper shape of each friction part 3 for a long period of time.

本願の第9の発明は、前記第7の発明または第8も発明の摩擦具において、前記透視部7が透明材料により形成されることを要件とする。 A ninth invention of the present application is the friction tool of the seventh invention or the eighth invention, wherein the see-through portion 7 is formed of a transparent material.

前記第9の発明の摩擦具1は、前記構成により、摩擦部3が本体2の端部より軸方向外方に大きく突出せず、摩擦部3の周方向の側面を保護することがでる。 With the above-described configuration, the friction tool 1 of the ninth aspect of the present invention can protect the side surface of the friction portion 3 in the circumferential direction without causing the friction portion 3 to project largely outward in the axial direction from the end portion of the main body 2.

本願の第10の発明は、前記第7乃至第9の発明の摩擦具において、前記摩擦部3が、前記本体2の端部周縁部に軸方向外方に突出する凸部4の外面に形成され、前記凸部4を除く本体2の端部の軸方向外面に、径方向に開口され且つ軸方向外方に開口される凹部5が形成され、前記凹部5が少なくとも前記透視部7の一部を構成することを要件とする。 A tenth invention of the present application is the friction tool according to the seventh to ninth inventions, wherein the friction portion 3 is formed on an outer surface of a convex portion 4 projecting axially outward at a peripheral edge portion of an end portion of the main body 2. A recess 5 is formed on the axial outer surface of the end portion of the main body 2 excluding the convex portion 4 and is opened in the radial direction and outward in the axial direction, and the concave portion 5 is at least one of the see-through portions 7. The requirement is to compose a section.

前記第10の発明の摩擦具1は、前記構成により、摩擦時、摩擦部3の位置する凸部4の径方向内面を、凹部5を通して容易に視認できる。尚、本発明において、透視部7の構成は、例えば、凹部5のみで形成される構成、凹部5と透明材料部分とからなる構成、または透明材料部分のみで形成される構成が挙げられる。 With the above structure, the friction tool 1 of the tenth invention allows the radial inner surface of the convex portion 4 where the friction portion 3 is located to be easily visually recognized through the concave portion 5 during friction. In the present invention, the see-through part 7 may be formed of, for example, only the recess 5, a structure including the recess 5 and a transparent material portion, or a structure including only the transparent material portion.

本願の第11の発明は、前記第7乃至第10の発明の摩擦具において、前記摩擦部3の径方向の反対側の本体2外面にガイド突起21が形成されることを要件とする。 The eleventh invention of the present application requires that, in the friction tool of the seventh to tenth inventions, a guide projection 21 is formed on the outer surface of the main body 2 on the opposite side in the radial direction of the friction portion 3.

前記第11の発明の摩擦具1は、前記構成により、摩擦時、本体2を把持する際、ガイド突起21を指で挟持したり、ガイド突起21上に指を載置したりすることにより、凸部4(摩擦部3)の周方向の向きを容易に識別し、迅速に摩擦作業を開始できる。 The friction tool 1 according to the eleventh aspect of the invention is configured as described above, by gripping the main body 2 at the time of friction, by sandwiching the guide protrusion 21 with a finger or placing a finger on the guide protrusion 21. The circumferential direction of the convex portion 4 (friction portion 3) can be easily identified, and the friction work can be started quickly.

本願の第12の発明は、熱変色性インキが内蔵され且つ該熱変色性インキが吐出可能なペン先を有する軸筒を備えた熱変色性筆記具であって、前記軸筒が前記第1乃至11の発明の何れか記載の摩擦具であることを要件とする。 A twelfth invention of the present application is a thermochromic writing instrument comprising a barrel having a thermochromic ink built therein and having a pen tip capable of ejecting the thermochromic ink, wherein the barrel is the first to the third. It is required that the friction tool according to any one of 11th inventions is used.

前記第12の発明の熱変色性筆記具11は、前記構成により、摩擦時、摩擦部3と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。本願発明において、摩擦部3は、例えば、軸筒の反ペン先側端部に形成される。本願発明の軸筒は、熱変色性インキが内蔵され且つ該熱変色性インキが吐出可能なペン先を備えた筆記体が移動可能に収容され、該ペン先が出没可能に構成される出没式筆記具の軸筒であってもよく、その場合、摩擦部3は、軸筒のペン先出没孔の開口端部、軸筒の反ペン先側端部、または軸筒の反ペン先側端部に設けられる押圧操作部の反ペン先側端部に形成される。 According to the thermochromic writing instrument 11 of the twelfth invention, the contact portion between the friction portion 3 and the paper surface can be easily visually recognized from the outside during rubbing due to the above-mentioned configuration, and a fine portion of the thermochromic handwriting can be surely obtained. Can be heat discolored. In the present invention, the friction portion 3 is formed, for example, at the end of the shaft tube opposite to the pen tip. The barrel of the present invention is a retractable type in which a writing body having a thermochromic ink built-in and a pen tip capable of ejecting the thermochromic ink is movably accommodated and the pen tip is retractable. It may be a shaft cylinder of a writing instrument, and in this case, the friction portion 3 includes the opening end of the pen tip withdrawal hole of the shaft cylinder, the non-pen tip side end of the shaft cylinder, or the non-pen tip side end of the shaft cylinder. Is formed at the end portion of the pressing operation portion provided on the side opposite to the pen tip.

本願の第13の発明は、熱変色性インキが内蔵され且つ該熱変色性インキが吐出可能なペン先を有する軸筒と、該軸筒のペン先側に着脱自在に装着されるキャップとを備えた熱変色性筆記具であって、前記キャップが前記第1乃至11の発明の何れかに記載の摩擦具であることを要件とする。 A thirteenth invention of the present application comprises a barrel having a thermochromic ink built therein and having a pen tip capable of ejecting the thermochromic ink, and a cap detachably attached to the pen tip side of the barrel. A thermochromic writing instrument provided, wherein the cap is the friction instrument according to any one of the first to eleventh inventions.

前記第13の発明の熱変色性筆記具11は、前記構成により、摩擦時、摩擦部3の紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。本願発明において、摩擦部3は、例えば、キャップの閉塞側端部またはキャップの開口端部に形成される。 According to the thermochromic writing instrument 11 of the thirteenth invention, the contact portion with the paper surface of the friction portion 3 can be easily visually recognized from the outside during rubbing due to the above-mentioned configuration, and a fine portion of the thermochromic handwriting can be surely obtained. Can be heat discolored. In the present invention, the friction portion 3 is formed, for example, on the closed end of the cap or the open end of the cap.

・本体
本願発明において、本体2の形状としては、筒状体(例えば、円筒体、多角形筒状体等)、柱状体(例えば、円柱体、角柱体等)、その他任意の立体形状等が挙げられる。本体2を構成する材料としては、合成樹脂(例えば、ポリカーボネイト、ポリプロピレン)、金属、木材等が挙げられる。また、本体2は、凸部4を構成する弾性を有する合成樹脂により形成してもよい。即ち、凸部4と本体2とを共通の弾性を有する合成樹脂により一体に形成してもよい。
Main body In the present invention, the main body 2 may have a tubular shape (for example, a cylindrical body, a polygonal tubular body, or the like), a columnar body (for example, a cylindrical body, a prismatic body, or the like), or any other three-dimensional shape. Can be mentioned. Examples of the material forming the main body 2 include synthetic resin (for example, polycarbonate, polypropylene), metal, wood and the like. Further, the main body 2 may be formed of an elastic synthetic resin forming the convex portion 4. That is, the convex portion 4 and the main body 2 may be integrally formed of a synthetic resin having common elasticity.

・凸部
本願発明において、凸部4または摩擦部3を構成する弾性材料としては、弾性を有する合成樹脂(ゴム、エラストマー)が挙げられ、例えば、シリコーン樹脂、SBS樹脂(スチレン−ブタジエン−スチレン共重合体)、SEBS樹脂(スチレン−エチレン−ブタジエン−スチレン共重合体)、フッ素系樹脂、クロロプレン樹脂、ニトリル樹脂、ポリエステル系樹脂、オレフィン系樹脂、エチレンプロピレンジエンゴム(EPDM)等が挙げられ、特に、高摩耗性の弾性材料(例えば、消しゴム等)からなるものよりも、摩擦時に摩耗屑が生じない低摩耗性の弾性材料からなることが好ましい。
-Convex portion In the present invention, examples of the elastic material forming the convex portion 4 or the friction portion 3 include elastic synthetic resins (rubber, elastomer). For example, silicone resin, SBS resin (styrene-butadiene-styrene Polymer), SEBS resin (styrene-ethylene-butadiene-styrene copolymer), fluororesin, chloroprene resin, nitrile resin, polyester resin, olefin resin, ethylene propylene diene rubber (EPDM), and the like. It is preferable to use an elastic material having a low wear property, which does not generate abrasion debris during friction, rather than an elastic material having a high wear property (for example, an eraser).

本願発明において、凸部4全体の形状としては、板状、柱状、円錐状、角錐状、球状等が挙げられる。凸部4の頂部41としては、軸線に対する垂直面、軸線に対する傾斜面、凸曲面、テーパ面等が挙げられる。特に、凸部4の頂部41は、軸方向外方に向かって次第に細くなる先細形状(凸曲面、テーパ面、傾斜面等)が好ましく、それにより、凸部41相互間に形成される凹部5の軸方向の開口端が軸方向外方に向かって拡開形状となり、凹部5を通して凸部41の頂部41(摩擦部3)が視認しやすくなる。 In the present invention, examples of the shape of the entire convex portion 4 include a plate shape, a column shape, a conical shape, a pyramidal shape, and a spherical shape. Examples of the apex 41 of the convex portion 4 include a vertical surface with respect to the axis, an inclined surface with respect to the axis, a convex curved surface, and a tapered surface. In particular, the top portion 41 of the convex portion 4 preferably has a tapered shape (convex curved surface, tapered surface, inclined surface, or the like) that gradually taper outward in the axial direction, whereby the concave portion 5 formed between the convex portions 41. The opening end in the axial direction has a shape that expands outward in the axial direction, and the top portion 41 (friction portion 3) of the convex portion 41 is easily visible through the concave portion 5.

本願発明において、凸部4を凹部5を通して視認する際、凸部4の頂部41の外径(周方向の幅)は、凸部4の相互間の凹部5の軸方向外端部の間隔(周方向の幅)より小さく形成されることが好ましい。それにより、凹部5を通して凸部4の頂部41(摩擦部3)近傍を視認しやすくなる。 In the present invention, when the convex portion 4 is visually recognized through the concave portion 5, the outer diameter (circumferential width) of the top portion 41 of the convex portion 4 is determined by the distance between the axial outer ends of the concave portions 5 between the convex portions 4 ( The width is preferably smaller than the circumferential width). This makes it easier to visually recognize the vicinity of the top portion 41 (friction portion 3) of the convex portion 4 through the concave portion 5.

本願発明において、凸部4は、1個でもよいが、複数個設けられる場合、その個数は、具体的には、2個〜8個が挙げられ、それにより、凹部5を通した摩擦部3の適正な視認性及び摩擦部3の十分な耐久性が得られる。凸部4は、複数個が周状に等間隔に設けられる場合、奇数個(例えば、3個、5個、7個等)が好ましく、それにより、凹部5を通して、凸部4の径方向内面の視認が容易となる。 In the present invention, the number of the convex portions 4 may be one, but when a plurality of convex portions 4 are provided, the number thereof is specifically 2 to 8, whereby the friction portion 3 passing through the concave portion 5 is provided. Appropriate visibility and sufficient durability of the friction portion 3 can be obtained. When a plurality of convex portions 4 are provided at equal intervals in a circumferential shape, an odd number (for example, 3, 5, 7, etc.) is preferable, so that through the concave portion 5, the radial inner surface of the convex portion 4 can be formed. Is easy to see.

本願発明において、凸部4は、本体2の端部周縁部の軸方向外面もしくは本体2の端部周縁部の径方向外面に設けられるか、または、本体2の端部周縁部の軸方向外面且つ本体2の端部周縁部の径方向外面に設けられる。 In the present invention, the convex portion 4 is provided on the axial outer surface of the end peripheral portion of the main body 2 or on the radial outer surface of the end peripheral portion of the main body 2, or on the axial outer surface of the end peripheral portion of the main body 2. In addition, it is provided on the radially outer surface of the peripheral edge portion of the main body 2.

本発明の摩擦具は、摩擦時、摩擦部と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 In the friction tool of the present invention, the contact portion between the friction portion and the paper surface can be easily visually recognized from the outside during rubbing, and it is possible to surely thermally discolor the portion where the thermochromic handwriting is fine.

本発明の熱変色性筆記具は、摩擦時、摩擦部と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 In the thermochromic writing instrument of the present invention, the contact portion between the friction portion and the paper surface can be easily visually recognized from the outside during rubbing, and the thermochromic handwriting can be surely thermally discolored at a fine portion.

本発明の第1の実施の形態の要部正面図である。It is a principal part front view of the 1st Embodiment of this invention. 図1の平面図である。2点鎖線の矢印は視認方向を示す。It is a top view of FIG. The two-dot chain line arrow indicates the viewing direction. 図1の斜視図である。It is a perspective view of FIG. 本発明の第2の実施の形態の要部正面図である。It is a principal part front view of the 2nd Embodiment of this invention. 図4の平面図である。FIG. 5 is a plan view of FIG. 4. 図4のA−A線断面図である。2点鎖線の矢印は視認方向を示す。It is the sectional view on the AA line of FIG. The two-dot chain line arrow indicates the viewing direction. 図4の斜視図である。FIG. 5 is a perspective view of FIG. 4. 本発明の第3の実施の形態の要部正面図である。It is a principal part front view of the 3rd Embodiment of this invention. 図8の斜視図である。FIG. 9 is a perspective view of FIG. 8. 図8の平面図である。2点鎖線の矢印は視認方向を示す。FIG. 9 is a plan view of FIG. 8. The two-dot chain line arrow indicates the viewing direction. 本発明の第4の実施の形態の要部正面図である。It is a principal part front view of the 4th Embodiment of this invention. 図11の平面図である。2点鎖線の矢印は視認方向を示す。FIG. 12 is a plan view of FIG. 11. The two-dot chain line arrow indicates the viewing direction. 図11の斜視図である。FIG. 12 is a perspective view of FIG. 11. 本発明の第5の実施の形態の要部正面図である。It is a principal part front view of the 5th Embodiment of this invention. 図14の平面図である。2点鎖線の矢印は視認方向を示す。It is a top view of FIG. The two-dot chain line arrow indicates the viewing direction. 図14の斜視図である。It is a perspective view of FIG. 本発明の第6の実施の形態の要部正面図である。It is a principal part front view of the 6th Embodiment of this invention. 図17の平面図である。2点鎖線の矢印は視認方向を示す。FIG. 18 is a plan view of FIG. 17. The two-dot chain line arrow indicates the viewing direction. 図17の斜視図である。It is a perspective view of FIG. 本発明の第7の実施の形態の要部斜視図である。It is a principal part perspective view of the 7th Embodiment of this invention. 本発明の第8の実施の形態の要部正面図である。It is a principal part front view of the 8th Embodiment of this invention. 図21の平面図である。2点鎖線の矢印は視認方向を示す。FIG. 22 is a plan view of FIG. 21. The two-dot chain line arrow indicates the viewing direction. 本発明の第9の実施の形態の要部斜視図である。It is a principal part perspective view of the 9th Embodiment of this invention. (A)は図23の平面図、(B)は図23の正面図である。2点鎖線の矢印は視認方向を示す。23A is a plan view of FIG. 23, and FIG. The two-dot chain line arrow indicates the viewing direction. 本発明の第10の実施の形態の要部斜視図である。It is a principal part perspective view of the 10th Embodiment of this invention. (A)は図25の平面図、(B)は図25の正面図である。2点鎖線の矢印は視認方向を示す。25A is a plan view of FIG. 25, and FIG. The two-dot chain line arrow indicates the viewing direction. 本発明の第11の実施の形態の要部斜視図である。It is a principal part perspective view of the 11th Embodiment of this invention. (A)は図27の平面図、(B)は図27の正面図である。2点鎖線の矢印は視認方向を示す。27A is a plan view of FIG. 27, and FIG. The two-dot chain line arrow indicates the viewing direction.

<第1の実施の形態>
本発明の第1の実施の形態の摩擦具1及び熱変色性筆記具11を図1乃至図3に示す。
本実施の形態の摩擦具1及び熱変色性筆記具11は、本体2と、本体2の端部に設けられる摩擦部3とを備える。
<First Embodiment>
The friction tool 1 and the thermochromic writing instrument 11 according to the first embodiment of the present invention are shown in FIGS.
The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment include a main body 2 and a friction portion 3 provided at an end of the main body 2.

・本体
本体2は、筒状体(例えば円筒体)または柱状体(例えば円柱体)である。本体2を構成する材料としては、合成樹脂(例えば、ポリカーボネイト、ポリプロピレン)、金属、木材等が挙げられる。
-Main body The main body 2 is a cylindrical body (for example, a cylindrical body) or a columnar body (for example, a cylindrical body). Examples of the material forming the main body 2 include synthetic resin (for example, polycarbonate, polypropylene), metal, wood and the like.

本体2は、内部が空洞の筒状体の場合、熱変色性筆記具11に用いる軸筒、または熱変色性筆記具11に用いるキャップを構成することができる。前記熱変色性筆記具11に用いる軸筒は、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具における軸筒である。前記熱変色性筆記具11に用いるキャップは、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具における軸筒のペン先側に装着されるキャップである。 When the main body 2 is a hollow cylindrical body, the main body 2 can form a barrel used for the thermochromic writing instrument 11 or a cap used for the thermochromic writing instrument 11. The barrel used in the thermochromic writing instrument 11 is a barrel in a thermochromic writing instrument having a pen tip capable of containing the thermochromic ink therein and ejecting the thermochromic ink. The cap used for the thermochromic writing instrument 11 is a cap to be mounted on the pen tip side of the barrel of the thermochromic writing instrument, the pen containing the thermochromic ink inside and having a pen tip capable of discharging the thermochromic ink. Is.

・摩擦部(凸部)
本体2の端部周縁部(本体2の端部の径方向外周縁部近傍)に、軸方向外方(図面で上方)に突出する複数(例えば3個)の凸部4が形成される。各々の凸部4は、本体2の端部周縁部に等間隔で配置される。各々の凸部4(即ち、各々の凸部4の頂部41の軸方向外面及び各々の凸部4の頂部41の径方向外面)が摩擦部3となる。各々の凸部4の軸方向内方端部が本体2の端部周縁部の軸方向外面に設けられ、各々の凸部4の軸方向外方端部が本体2の端部周縁部より軸方向外方に位置される。
・Friction (convex)
A plurality of (for example, three) convex portions 4 projecting axially outward (upward in the drawing) are formed on the peripheral edge portion of the main body 2 (in the vicinity of the radial outer peripheral edge portion of the end portion of the main body 2). The respective convex portions 4 are arranged at equal intervals on the peripheral edge portion of the end portion of the main body 2. Each convex portion 4 (that is, the axial outer surface of the top 41 of each convex portion 4 and the radial outer surface of the top 41 of each convex portion 4) serves as the friction portion 3. The axially inner end of each convex portion 4 is provided on the axial outer surface of the end peripheral portion of the main body 2, and the axial outer end of each convex portion 4 is more axial than the end peripheral portion of the main body 2. It is located outward in the direction.

各々の凸部4は、軸線に対して垂直な平面よりなる頂部41と、頂部41より軸方向内方(図面で下方)に延びる両側の側部42とを備える。各々の凸部4は、略四角柱状または板状に形成される。各々の凸部4の径方向外面は、凸曲面状である。各々の凸部4の径方向内面は、凹曲面状である。尚、各々の凸部4の頂部41は、平面以外に先細状(例えば、先細状凸曲面)であってもよい。 Each of the convex portions 4 includes a top portion 41 formed of a plane perpendicular to the axis and side portions 42 on both sides extending axially inward (downward in the drawing) from the top portion 41. Each of the protrusions 4 is formed in a substantially square pole shape or a plate shape. The radial outer surface of each convex portion 4 has a convex curved surface shape. The radially inner surface of each convex portion 4 has a concave curved surface shape. The top 41 of each convex portion 4 may have a tapered shape (for example, a tapered convex curved surface) other than a flat surface.

各々の凸部4は、弾性材料から形成され、例えば、弾性を有する合成樹脂(ゴム、エラストマー)が挙げられ、例えば、シリコーン樹脂、SBS樹脂(スチレン−ブタジエン−スチレン共重合体)、SEBS樹脂(スチレン−エチレン−ブタジエン−スチレン共重合体)、ポリエステル系樹脂、オレフィン系樹脂等が挙げられ、特に、高摩耗性の弾性材料(例えば、消しゴム等)からなるものよりも、摩擦時に摩耗屑が生じない低摩耗性の弾性材料からなることが好ましい。凸部4が弾性材料からなることにより、凸部4が径方向の可撓性を有する。尚、本実施の形態では、凸部4全体が弾性材料によって形成されるが、摩擦部3を構成するためには少なくとも凸部4の頂部41が弾性材料であればよい。 Each of the convex portions 4 is formed of an elastic material, and examples thereof include elastic synthetic resins (rubber, elastomer), such as silicone resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin ( Styrene-ethylene-butadiene-styrene copolymer), polyester resins, olefin resins, etc., and abrasion debris is generated during rubbing compared with those made of highly abrasion-resistant elastic materials (e.g., eraser). It is preferably made of a low wear elastic material. Since the convex portion 4 is made of an elastic material, the convex portion 4 has radial flexibility. In the present embodiment, the entire convex portion 4 is formed of an elastic material, but at least the top portion 41 of the convex portion 4 may be an elastic material in order to form the friction portion 3.

・基部
本体2の端部は、弾性材料によりなる基部6が環状に設けられる。基部6に各々凸部4が一体に形成される。凸部4及び基部6は、本体2に嵌合、螺着、熱融着、接着等により固定され、特に、本体2が合成樹脂の場合、凸部4及び基部6は、本体2に2色成形により固定することもできる。基部6の軸方向外面は、軸線に対して垂直な面よりなる。
A base 6 made of an elastic material is annularly provided at the end of the base body 2. The convex portions 4 are integrally formed on the base portion 6. The convex portion 4 and the base portion 6 are fixed to the main body 2 by fitting, screwing, heat-sealing, adhering, etc. In particular, when the main body 2 is a synthetic resin, the convex portion 4 and the base portion 6 have two colors on the main body 2. It can also be fixed by molding. The outer surface in the axial direction of the base 6 is a surface perpendicular to the axis.

・周縁凹部
隣り合う凸部4と凸部4の間(凸部4相互間)には、軸方向外方に開口され且つ径方向外方に開口される周縁凹部51が形成される。各々の周縁凹部51は、軸線に対して垂直な面よりなる基部6の軸方向外面と、凸部4の両側の側部42とから形成される。
-Peripheral Recesses Between the adjacent convex portions 4 and the convex portions 4 (between the convex portions 4), a peripheral concave portion 51 that is opened axially outward and radially outward is formed. Each of the peripheral concave portions 51 is formed by the axial outer surface of the base portion 6 which is a surface perpendicular to the axis and the side portions 42 on both sides of the convex portion 4.

・中央凹部
凸部4は本体2の端部の軸方向外面の中央には形成されず、本体2の端部の軸方向外面の中央には軸方向外方に開口する中央凹部52が形成される。中央凹部52は、各々の周縁凹部51と径方向に連通される。各々の周縁凹部51と中央凹部52とにより、凸部4を除く本体2の端部の軸方向外面に凹部5(透視部)が形成される。中央凹部52は各々の周縁凹部51より軸方向内方に深く形成されているが、これ以外にも、中央凹部52の軸方向内方の深さと周縁凹部51の軸方向内方の深さが同じである構成(中央凹部52の底面と周縁凹部51の底面が一つの連続した面である構成)でもよい。
The central concave convex portion 4 is not formed at the center of the axial outer surface of the end of the main body 2, and the central concave portion 52 that opens axially outward is formed at the center of the axial outer surface of the end of the main body 2. It The central recess 52 is in radial communication with each peripheral recess 51. The peripheral recessed portion 51 and the central recessed portion 52 form a recessed portion 5 (transparent portion) on the axially outer surface of the end portion of the main body 2 excluding the protruding portion 4. The central recess 52 is formed deeper inward in the axial direction than each of the peripheral recesses 51. In addition to this, the depth of the central recess 52 in the axial direction and the depth of the peripheral recess 51 in the axial direction are different. The same configuration may be adopted (the bottom surface of the central recess 52 and the bottom surface of the peripheral recess 51 are one continuous surface).

・摩擦時
摩擦時、本体2を把持し、本体2を紙面に対して垂直方向から少しの角度だけ傾けて、紙面に摩擦部3(具体的には凸部4の頂部41の径方向の外周縁部)を接触させる。摩擦時、本体2端部の凹部5(凸部4相互間の周縁凹部51及び本体2の端部の中央凹部52)を介して、紙面に接触する凸部4(具体的には凸部4の径方向内面または凸部4の周方向側面)を視認することができる。(図2参照)
During friction When gripping, the main body 2 is gripped, the main body 2 is tilted at a slight angle from the vertical direction with respect to the paper surface, and the friction portion 3 (specifically, the outside of the top portion 41 of the convex portion 4 in the radial direction is applied to the paper surface). The peripheral edge). At the time of friction, the convex portion 4 (specifically, the convex portion 4) that comes into contact with the paper surface through the concave portion 5 at the end portion of the main body 2 (the peripheral concave portion 51 between the convex portions 4 and the central concave portion 52 at the end portion of the main body 2). The inner surface in the radial direction or the circumferential side surface of the convex portion 4) can be visually recognized. (See Figure 2)

本実施の形態の摩擦具1及び熱変色性筆記具11は、熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部3を本体2の端部に備えた摩擦具1であって、本体2の端部周縁部に軸方向外方に突出する非環状の凸部4が形成され、凸部4が摩擦部3となり、凸部4を除く本体2の端部の軸方向外面に、径方向外方に開口され且つ軸方向外方に開口される凹部5が形成され、摩擦時に凹部5を通して凸部4が視認可能に構成されることにより、摩擦時、摩擦部3と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment are provided with a friction portion 3 at the end of the main body 2 that has a friction portion 3 that rubs a thermochromic handwriting and thermally discolors the handwriting by frictional heat generated at that time. In the tool 1, a non-annular convex portion 4 that projects outward in the axial direction is formed on the peripheral edge portion of the main body 2, the convex portion 4 serves as the friction portion 3, and the end portion of the main body 2 excluding the convex portion 4 is formed. A concave portion 5 that is opened radially outward and axially outward is formed on the outer surface in the axial direction of the, and the convex portion 4 is configured to be visible through the concave portion 5 at the time of friction. A contact portion between the portion 3 and the paper surface can be easily visually recognized from the outside, and a portion having a small thermochromic handwriting can be surely thermally discolored.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が、本体2の端部周縁部に間隔を置いて複数、配置されることにより、摩擦時、本体2を把持した後、本体2を大きく回転することなく、何れかの摩擦部3を紙面に接触させて迅速に摩擦作業を開始でき、さらに、摩擦部3が複数箇所存在するため、一つの摩擦部3のみが磨耗することを抑え、長期にわたり各々の摩擦部3の適正な形状を維持できる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the plurality of convex portions 4 are arranged at the peripheral edge portion of the end portion of the main body 2 at intervals so that after the main body 2 is gripped at the time of friction. It is possible to quickly start the friction work by bringing any of the friction parts 3 into contact with the surface of the paper without rotating the main body 2 significantly. Furthermore, since there are a plurality of friction parts 3, only one friction part 3 is worn. It is possible to suppress the occurrence of friction and maintain the proper shape of each frictional portion 3 for a long period of time.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が弾性材料により形成され、凸部4が径方向の可撓性を有することにより、摩擦時、凸部4が紙面との接触により径方向内方に変形し、摩擦部3と紙面との確実な接触が得られる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the convex portion 4 is formed of an elastic material, and the convex portion 4 has radial flexibility, so that the convex portion 4 is not in contact with the paper surface during friction. Is deformed inward in the radial direction, and reliable contact between the friction portion 3 and the paper surface can be obtained.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4の径方向反対側の凹部5を通して凸部4を視認した際、凸部4の頂部41の外径(周方向の幅)が、凸部4の相互間の凹部5の軸方向外端部の間隔(周方向の幅)より小さく形成される。それにより、凹部5を通して凸部4の頂部41(摩擦部3)近傍を視認しやすくなる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, when the convex portion 4 is visually recognized through the concave portion 5 on the radial opposite side of the convex portion 4, the outer diameter of the top portion 41 of the convex portion 4 (width in the circumferential direction). ) Is formed to be smaller than the interval (width in the circumferential direction) between the axially outer ends of the concave portions 5 between the convex portions 4. This makes it easier to visually recognize the vicinity of the top portion 41 (friction portion 3) of the convex portion 4 through the concave portion 5.

<第2の実施の形態>
本発明の第2の実施の形態の摩擦具1及び熱変色性筆記具11を図4乃至図7に示す。
本実施の形態の摩擦具1及び熱変色性筆記具11は、本体2と、本体2の端部に設けられる摩擦部3とを備える。
<Second Embodiment>
A friction tool 1 and a thermochromic writing tool 11 according to a second embodiment of the present invention are shown in FIGS. 4 to 7.
The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment include a main body 2 and a friction portion 3 provided at an end of the main body 2.

・本体
本体2は、筒状体(例えば円筒体)または柱状体(例えば円柱体)である。本体2を構成する材料としては、合成樹脂(例えば、ポリカーボネイト、ポリプロピレン)、金属、木材等が挙げられる。
-Main body The main body 2 is a cylindrical body (for example, a cylindrical body) or a columnar body (for example, a cylindrical body). Examples of the material forming the main body 2 include synthetic resin (for example, polycarbonate, polypropylene), metal, wood and the like.

本体2は、内部が空洞の筒状体の場合、熱変色性筆記具11に用いる軸筒、または熱変色性筆記具11に用いるキャップを構成することができる。前記熱変色性筆記具11に用いる軸筒は、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具における軸筒である。前記熱変色性筆記具11に用いるキャップは、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具における軸筒のペン先側に装着されるキャップである。 When the main body 2 is a hollow cylindrical body, the main body 2 can form a barrel used for the thermochromic writing instrument 11 or a cap used for the thermochromic writing instrument 11. The barrel used in the thermochromic writing instrument 11 is a barrel in a thermochromic writing instrument having a pen tip capable of containing the thermochromic ink therein and ejecting the thermochromic ink. The cap used for the thermochromic writing instrument 11 is a cap to be mounted on the pen tip side of the barrel of the thermochromic writing instrument, the pen containing the thermochromic ink inside and having a pen tip capable of discharging the thermochromic ink. Is.

・摩擦部(凸部)
本体2の端部周縁部(本体2の端部の径方向外周縁部近傍)に、軸方向外方(図面で上方)に突出する複数(例えば3個)の凸部4が形成される。各々の凸部4は、本体2の端部周縁部に等間隔で配置される。各々の凸部4(即ち、各々の凸部4の頂部41の軸方向外面及び各々の凸部4の頂部41の径方向外面)が摩擦部3となる。各々の凸部4は、軸方向内方端部が本体2の端部周縁部の軸方向外面に設けられ、軸方向外方端部が本体2の端部周縁部より軸方向外方に位置される。
・Friction (convex)
A plurality of (for example, three) convex portions 4 projecting axially outward (upward in the drawing) are formed on the peripheral edge portion of the main body 2 (in the vicinity of the radial outer peripheral edge portion of the end portion of the main body 2). The respective convex portions 4 are arranged at equal intervals on the peripheral edge portion of the end portion of the main body 2. Each convex portion 4 (that is, the axial outer surface of the top 41 of each convex portion 4 and the radial outer surface of the top 41 of each convex portion 4) serves as the friction portion 3. Each of the protrusions 4 has an axially inner end portion provided on an axially outer surface of an end peripheral portion of the main body 2, and an axial outer end portion positioned axially outward from the end peripheral portion of the main body 2. To be done.

各々の凸部4は、軸線に対して垂直な稜線よりなる頂部41と、頂部41より両側に軸方向内方に向かうに従い次第に両者の距離が広がる傾斜面よりなる側部42とを備える。各々の凸部4は、正面視で略三角状の板形状により形成される。各々の凸部4の径方向外面は、凸曲面状である。各々の凸部4の径方向内面は、凹曲面状である。尚、各々の凸部4の頂部41は、稜線以外に先細状(例えば、先細状凸曲面)であってもよい。 Each convex portion 4 includes a top portion 41 formed of a ridge line perpendicular to the axis, and a side portion 42 formed of an inclined surface on both sides of the top portion 41 so that the distance gradually increases inward in the axial direction. Each convex portion 4 is formed in a substantially triangular plate shape in a front view. The radial outer surface of each convex portion 4 has a convex curved surface shape. The radially inner surface of each convex portion 4 has a concave curved surface shape. The top 41 of each convex portion 4 may have a tapered shape (for example, a tapered convex curved surface) other than the ridge line.

各々の凸部4は、弾性材料から形成され、例えば、弾性を有する合成樹脂(ゴム、エラストマー)が挙げられ、例えば、シリコーン樹脂、SBS樹脂(スチレン−ブタジエン−スチレン共重合体)、SEBS樹脂(スチレン−エチレン−ブタジエン−スチレン共重合体)、ポリエステル系樹脂、オレフィン系樹脂等が挙げられ、特に、高摩耗性の弾性材料(例えば、消しゴム等)からなるものよりも、摩擦時に摩耗屑が生じない低摩耗性の弾性材料からなることが好ましい。凸部4が弾性材料からなることにより、凸部4が径方向の可撓性を有する。尚、本実施の形態では、凸部4全体が弾性材料によって形成されるが、摩擦部3を構成するためには少なくとも凸部4の頂部41が弾性材料であればよい。 Each of the convex portions 4 is formed of an elastic material, and examples thereof include elastic synthetic resins (rubber, elastomer), such as silicone resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin ( Styrene-ethylene-butadiene-styrene copolymer), polyester resins, olefin resins, etc., and abrasion debris is generated during rubbing compared with those made of highly abrasion-resistant elastic materials (e.g., eraser). It is preferably made of a low wear elastic material. Since the convex portion 4 is made of an elastic material, the convex portion 4 has radial flexibility. In the present embodiment, the entire convex portion 4 is formed of an elastic material, but at least the top portion 41 of the convex portion 4 may be an elastic material in order to form the friction portion 3.

・基部
本体2の端部は、弾性材料によりなる基部6が環状に設けられる。基部6に各々凸部4が一体に形成される。凸部4及び基部6は、本体2に嵌合、螺着、熱融着、接着等により固定され、特に、本体2が合成樹脂の場合、凸部4及び基部6は、本体2に2色成形により固定することができる。
A base 6 made of an elastic material is annularly provided at the end of the base body 2. The convex portions 4 are integrally formed on the base portion 6. The convex portion 4 and the base portion 6 are fixed to the main body 2 by fitting, screwing, heat-sealing, adhering, etc. In particular, when the main body 2 is a synthetic resin, the convex portion 4 and the base portion 6 have two colors on the main body 2. It can be fixed by molding.

・周縁凹部
隣り合う凸部4と凸部4の間(凸部4相互間)には、軸方向外方に開口され且つ径方向外方に開口される周縁凹部51が形成される。各々の周縁凹部51は、隣り合う凸部4の各々の傾斜面よりなる側部42により正面視においてV字状に形成される。
-Peripheral Recesses Between the adjacent convex portions 4 and the convex portions 4 (between the convex portions 4), a peripheral concave portion 51 that is opened axially outward and radially outward is formed. Each of the peripheral concave portions 51 is formed in a V shape in a front view by the side portion 42 formed of each inclined surface of the adjacent convex portions 4.

・中央凹部
凸部4は本体2の端部の軸方向外面の中央には形成されず、本体2の端部の軸方向外面の中央には軸方向外方に開口する中央凹部52が形成される。中央凹部52は、各々の周縁凹部51と径方向に連通される。各々の周縁凹部51と中央凹部52とにより、凸部4を除く本体2の端部の軸方向外面に凹部5(透視部)が形成される。中央凹部52は各々の周縁凹部51より軸方向内方(図面で下方)に深く形成されている。これ以外にも、中央凹部52の軸方向内方の深さと周縁凹部51の軸方向内方の深さが同じである構成(中央凹部52の底部と周縁凹部51の底面が一つの連続した面である構成)でもよい。
The central concave convex portion 4 is not formed at the center of the axial outer surface of the end of the main body 2, and the central concave portion 52 that opens axially outward is formed at the center of the axial outer surface of the end of the main body 2. It The central recess 52 communicates with each peripheral recess 51 in the radial direction. The peripheral recessed portion 51 and the central recessed portion 52 form a recessed portion 5 (transparent portion) on the axially outer surface of the end portion of the main body 2 excluding the protruding portion 4. The central recess 52 is formed deeper inward in the axial direction (downward in the drawing) than each of the peripheral recesses 51. In addition, the axially inward depth of the central recess 52 and the axially inward depth of the peripheral recess 51 are the same (the bottom of the central recess 52 and the bottom of the peripheral recess 51 are one continuous surface). The configuration may be).

・摩擦時
摩擦時、本体2を把持し、本体2を紙面に対して垂直方向から少しの角度だけ傾けて、紙面に摩擦部3(具体的には凸部4の頂部41の径方向の外周縁部)を接触させる。摩擦時、本体2の端部の凹部5(凸部4の相互間の周縁凹部51及び本体2の端部の中央凹部52)を介して、紙面に接触する凸部4(具体的には凸部4の径方向内面または凸部4の周方向側面)を視認することができる。(図6参照)
During friction When gripping, the main body 2 is gripped, the main body 2 is tilted at a slight angle from the vertical direction with respect to the paper surface, and the friction portion 3 (specifically, the outside of the top portion 41 of the convex portion 4 in the radial direction is applied to the paper surface). The peripheral edge). During friction, the convex portion 4 (specifically, the convex portion 4) that comes into contact with the paper surface via the concave portion 5 at the end portion of the main body 2 (the peripheral concave portion 51 between the convex portions 4 and the central concave portion 52 at the end portion of the main body 2). The radially inner surface of the portion 4 or the circumferential side surface of the convex portion 4) can be visually recognized. (See Figure 6)

本実施の形態の摩擦具1及び熱変色性筆記具11は、熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部3を本体2の端部に備えた摩擦具1であって、本体2の端部周縁部に軸方向外方に突出する非環状の凸部4が形成され、凸部4が摩擦部3となり、凸部4を除く本体2の端部の軸方向外面に、径方向外方に開口され且つ軸方向外方に開口される凹部5が形成され、摩擦時に凹部5を通して凸部4が視認可能に構成されることにより、摩擦時、摩擦部3と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment are provided with a friction portion 3 at the end of the main body 2 which is provided with a friction portion 3 that rubs a thermochromic handwriting and thermally discolors the handwriting by frictional heat generated at that time. In the tool 1, a non-annular convex portion 4 that projects outward in the axial direction is formed on the peripheral edge portion of the main body 2, the convex portion 4 serves as the friction portion 3, and the end portion of the main body 2 excluding the convex portion 4 is formed. A concave portion 5 that is opened radially outward and axially outward is formed on the outer surface in the axial direction of the, and the convex portion 4 is configured to be visible through the concave portion 5 at the time of friction. A contact portion between the portion 3 and the paper surface can be easily visually recognized from the outside, and a portion having a small thermochromic handwriting can be surely thermally discolored.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が、本体2の端部周縁部に間隔を置いて複数、配置されることにより、摩擦時、本体2を把持した後、本体2を大きく回転することなく、何れかの摩擦部3を紙面に接触させて迅速に摩擦作業を開始でき、さらに、摩擦部3が複数箇所存在するため、一つの摩擦部3のみが磨耗することを抑え、長期にわたり各々の摩擦部3の適正な形状を維持できる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the plurality of convex portions 4 are arranged at the peripheral edge portion of the end portion of the main body 2 at intervals so that after the main body 2 is gripped at the time of friction. It is possible to quickly start the friction work by bringing any of the friction parts 3 into contact with the surface of the paper without rotating the main body 2 significantly. Furthermore, since there are a plurality of friction parts 3, only one friction part 3 is worn. It is possible to suppress the occurrence of friction and maintain the proper shape of each frictional portion 3 for a long period of time.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が弾性材料により形成され、凸部4が径方向の可撓性を有することにより、摩擦時、凸部4が紙面との接触により径方向内方に変形し、摩擦部3と紙面との確実な接触が得られる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the convex portion 4 is formed of an elastic material, and the convex portion 4 has radial flexibility, so that the convex portion 4 is not in contact with the paper surface during friction. Is deformed inward in the radial direction, and reliable contact between the friction portion 3 and the paper surface can be obtained.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4の頂部41が軸方向外方に向かって次第に細くなる先細形状(凸曲面、テーパ面、傾斜面等)に形成されており、それにより、凸部4相互間に形成される凹部5の軸方向の開口端が軸方向外方に向かって拡開形状となり、凹部5を通して凸部4の頂部41(摩擦部3)が視認しやすくなる。 The friction tool 1 and the thermochromic writing instrument 11 of the present embodiment are formed in a tapered shape (convex curved surface, tapered surface, inclined surface, etc.) in which the apex 41 of the convex portion 4 tapers outward in the axial direction. As a result, the axial opening ends of the concave portions 5 formed between the convex portions 4 have a shape that expands outward in the axial direction, and the top portions 41 (friction portions 3) of the convex portions 4 pass through the concave portions 5. It becomes easier to see.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4の径方向反対側の凹部5を通して凸部4を視認した際、凸部4の頂部41の外径(周方向の幅)が、凸部4の相互間の凹部5の軸方向外端部の間隔(周方向の幅)より小さく形成される。それにより、凹部5を通して凸部4の頂部41(摩擦部3)近傍を視認しやすくなる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, when the convex portion 4 is visually recognized through the concave portion 5 on the radial opposite side of the convex portion 4, the outer diameter of the top portion 41 of the convex portion 4 (width in the circumferential direction). ) Is formed to be smaller than the interval (width in the circumferential direction) between the axially outer ends of the concave portions 5 between the convex portions 4. This makes it easier to visually recognize the vicinity of the top portion 41 (friction portion 3) of the convex portion 4 through the concave portion 5.

<第3の実施の形態>
本発明の第3の実施の形態の摩擦具1及び熱変色性筆記具11を図8乃至図10に示す。
本実施の形態の摩擦具1及び熱変色性筆記具11は、本体2と、本体2の端部に設けられる摩擦部3とを備える。
<Third Embodiment>
A friction tool 1 and a thermochromic writing tool 11 according to a third embodiment of the present invention are shown in FIGS. 8 to 10.
The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment include a main body 2 and a friction portion 3 provided at an end of the main body 2.

・本体
本体2は、筒状体(例えば円筒体)または柱状体(例えば円柱体)である。本体2を構成する材料としては、合成樹脂(例えば、ポリカーボネイト、ポリプロピレン)、金属、木材等が挙げられる。
-Main body The main body 2 is a cylindrical body (for example, a cylindrical body) or a columnar body (for example, a cylindrical body). Examples of the material forming the main body 2 include synthetic resin (for example, polycarbonate, polypropylene), metal, wood and the like.

本体2は、内部が空洞の筒状体の場合、熱変色性筆記具11に用いる軸筒、または熱変色性筆記具11に用いるキャップを構成することができる。前記熱変色性筆記具11に用いる軸筒は、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具11における軸筒である。前記熱変色性筆記具11に用いるキャップは、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具11における軸筒のペン先側に装着されるキャップである。 When the main body 2 is a hollow cylindrical body, the main body 2 can form a barrel used for the thermochromic writing instrument 11 or a cap used for the thermochromic writing instrument 11. The barrel used in the thermochromic writing instrument 11 is the barrel in the thermochromic writing instrument 11 having a pen tip capable of containing the thermochromic ink therein and ejecting the thermochromic ink. The cap used for the thermochromic writing instrument 11 is mounted on the pen tip side of the barrel of the thermochromic writing instrument 11 that accommodates the thermochromic ink inside and has a pen tip capable of ejecting the thermochromic ink. It is a cap.

・摩擦部(凸部)
本体2の端部周縁部(本体2の端部の径方向外周縁部近傍)に、軸方向外方(図面で上方)に突出する複数(例えば2個)の凸部4が形成される。各々の凸部4は、本体2の端部周縁部に等間隔で配置される。各々の凸部4(即ち、各々の凸部4の頂部41の軸方向外面及び各々の凸部4の頂部41の径方向外面)が摩擦部3となる。各々の凸部4は、軸方向内方端部が本体2の端部周縁部の軸方向外面に設けられ、軸方向外方端部が本体2の端部周縁部より軸方向外方に位置される。
・Friction (convex)
A plurality of (for example, two) convex portions 4 that project outward in the axial direction (upward in the drawing) are formed in the peripheral edge portion of the main body 2 (in the vicinity of the radial outer peripheral edge portion of the end portion of the main body 2). The respective convex portions 4 are arranged at equal intervals on the peripheral edge portion of the end portion of the main body 2. Each convex portion 4 (that is, the axial outer surface of the top 41 of each convex portion 4 and the radial outer surface of the top 41 of each convex portion 4) serves as the friction portion 3. Each of the protrusions 4 has an axially inner end portion provided on an axially outer surface of an end peripheral portion of the main body 2, and an axial outer end portion positioned axially outward from the end peripheral portion of the main body 2. To be done.

各々の凸部4は、軸線に対して垂直な平面よりなる頂部41と、頂部41より軸方向内方(図面で下方)に延びる両側の側部42とを備える。各々の凸部4は、略四角柱状または板状に形成される。各々の凸部4の径方向外面は、凸曲面状である。各々の凸部4の径方向内面は、凹曲面状である。尚、各々の凸部4の頂部41は、平面以外に先細状(例えば先細状凸曲面)であってもよい。 Each of the convex portions 4 includes a top portion 41 formed of a plane perpendicular to the axis and side portions 42 on both sides extending axially inward (downward in the drawing) from the top portion 41. Each of the protrusions 4 is formed in a substantially square pole shape or a plate shape. The radial outer surface of each convex portion 4 has a convex curved surface shape. The radially inner surface of each convex portion 4 has a concave curved surface shape. The top 41 of each protrusion 4 may have a tapered shape (for example, a tapered convex curved surface) other than a flat surface.

各々の凸部4は、弾性材料から形成され、例えば、弾性を有する合成樹脂(ゴム、エラストマー)が挙げられ、例えば、シリコーン樹脂、SBS樹脂(スチレン−ブタジエン−スチレン共重合体)、SEBS樹脂(スチレン−エチレン−ブタジエン−スチレン共重合体)、ポリエステル系樹脂、オレフィン系樹脂等が挙げられ、特に、高摩耗性の弾性材料(例えば、消しゴム等)からなるものよりも、摩擦時に摩耗屑が生じない低摩耗性の弾性材料からなることが好ましい。凸部4が弾性材料からなることにより、凸部4が径方向の可撓性を有する。尚、本実施の形態では、凸部4全体が弾性材料によって形成されるが、摩擦部3を構成するためには少なくとも凸部4の頂部41が弾性材料であればよい。 Each of the protrusions 4 is formed of an elastic material, and examples thereof include elastic synthetic resins (rubber, elastomer), such as silicone resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin ( Styrene-ethylene-butadiene-styrene copolymer), polyester resins, olefin resins, etc., and in particular, abrasion debris is generated during friction as compared with those made of highly abrasion-resistant elastic materials (e.g., eraser). It is preferably made of a low wear elastic material. Since the convex portion 4 is made of an elastic material, the convex portion 4 has radial flexibility. In the present embodiment, the entire convex portion 4 is formed of an elastic material, but at least the top portion 41 of the convex portion 4 may be an elastic material in order to form the friction portion 3.

・基部
本体2の端部は、弾性材料によりなる基部6が環状に設けられる。基部6の軸方向外面に各々凸部4が一体に形成される。凸部4及び基部6は、本体2に嵌合、螺着、熱融着、接着等により固定され、特に、本体2が合成樹脂の場合、凸部4及び基部6は、本体2に2色成形により固定することもできる。基部6の軸方向外面は、軸線に対して垂直な面よりなる。
A base 6 made of an elastic material is annularly provided at the end of the base body 2. The protrusions 4 are integrally formed on the outer surface of the base 6 in the axial direction. The convex portion 4 and the base portion 6 are fixed to the main body 2 by fitting, screwing, heat-sealing, adhering, etc. In particular, when the main body 2 is a synthetic resin, the convex portion 4 and the base portion 6 have two colors on the main body 2. It can also be fixed by molding. The outer surface in the axial direction of the base 6 is a surface perpendicular to the axis.

・周縁凹部
隣り合う凸部4と凸部4の間(凸部4相互間)には、軸方向外方に開口され且つ径方向外方に開口される周縁凹部51が形成される。各々の周縁凹部51は、軸線に対して垂直な面よりなる基部6の軸方向外面と、各々の凸部4の側部42とから形成される。
-Peripheral Recesses Between the adjacent convex portions 4 and the convex portions 4 (between the convex portions 4), a peripheral concave portion 51 that is opened axially outward and radially outward is formed. Each of the peripheral concave portions 51 is formed by the axial outer surface of the base portion 6 which is a surface perpendicular to the axis and the side portion 42 of each convex portion 4.

・中央凹部
凸部4は本体2の端部の軸方向外面の中央には形成されず、本体2の端部の軸方向外面の中央には軸方向外方に開口する中央凹部52が形成される。中央凹部52は、各々の周縁凹部51と径方向に連通される。各々の周縁凹部51と中央凹部52とにより、凸部4を除く本体2の端部の軸方向外面に凹部5(透視部)が形成される。中央凹部52は各々の周縁凹部51より軸方向内方に深く形成されているが、これ以外にも、中央凹部52の軸方向内方の深さと周縁凹部51の軸方向内方の深さが同じである構成(中央凹部52の底面と周縁凹部51の底面が一つの連続した面である構成)でもよい。
The central concave convex portion 4 is not formed at the center of the axial outer surface of the end of the main body 2, and the central concave portion 52 that opens axially outward is formed at the center of the axial outer surface of the end of the main body 2. It The central recess 52 communicates with each peripheral recess 51 in the radial direction. The peripheral recessed portion 51 and the central recessed portion 52 form a recessed portion 5 (transparent portion) on the axially outer surface of the end portion of the main body 2 excluding the protruding portion 4. The central recess 52 is formed deeper inward in the axial direction than each of the peripheral recesses 51. In addition to this, the depth of the central recess 52 in the axial direction and the depth of the peripheral recess 51 in the axial direction are different. The same configuration may be adopted (the bottom surface of the central recess 52 and the bottom surface of the peripheral recess 51 are one continuous surface).

・摩擦時
摩擦時、本体2を把持し、本体2を紙面に対して垂直方向から少しの角度だけ傾けて、紙面に摩擦部3(具体的には凸部4の頂部41の径方向の外周縁部)を接触させる。摩擦時、本体2の端部の凹部5(凸部4相互間の周縁凹部51及び本体2端部の中央凹部52)を介して、紙面に接触する凸部4(具体的には凸部4の径方向内面または凸部4の周方向側面)を視認することができる。(図10参照)
During friction When gripping, the main body 2 is gripped, the main body 2 is tilted at a slight angle from the vertical direction with respect to the paper surface, and the friction portion 3 (specifically, the outside of the top portion 41 of the convex portion 4 in the radial direction is applied to the paper surface). The peripheral edge). At the time of friction, the convex portion 4 (specifically, the convex portion 4) that comes into contact with the paper surface through the concave portion 5 at the end portion of the main body 2 (the peripheral concave portion 51 between the convex portions 4 and the central concave portion 52 at the end portion of the main body 2). The inner surface in the radial direction or the circumferential side surface of the convex portion 4) can be visually recognized. (See Figure 10)

本実施の形態の摩擦具1及び熱変色性筆記具11は、熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部3を本体2の端部に備えた摩擦具1であって、本体2の端部周縁部に軸方向外方に突出する非環状の凸部4が形成され、凸部4が摩擦部3となり、凸部4を除く本体2の端部の軸方向外面に、径方向外方に開口され且つ軸方向外方に開口される凹部5が形成され、摩擦時に凹部5を通して凸部4が視認可能に構成されることにより、摩擦時、摩擦部3と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment are provided with a friction portion 3 at the end of the main body 2 which is provided with a friction portion 3 that rubs a thermochromic handwriting and thermally discolors the handwriting by frictional heat generated at that time. In the tool 1, a non-annular convex portion 4 that projects outward in the axial direction is formed on the peripheral edge portion of the main body 2, the convex portion 4 serves as the friction portion 3, and the end portion of the main body 2 excluding the convex portion 4 is formed. A concave portion 5 that is opened radially outward and axially outward is formed on the outer surface in the axial direction of the, and the convex portion 4 is configured to be visible through the concave portion 5 at the time of friction. A contact portion between the portion 3 and the paper surface can be easily visually recognized from the outside, and a portion having a small thermochromic handwriting can be surely thermally discolored.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が、本体2の端部周縁部に間隔を置いて複数、配置されることにより、摩擦時、本体2を把持した後、本体2を大きく回転することなく、何れかの摩擦部3を紙面に接触させて迅速に摩擦作業を開始でき、さらに、摩擦部3が複数箇所存在するため、一つの摩擦部3のみが磨耗することを抑え、長期にわたり各々の摩擦部3の適正な形状を維持できる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the plurality of convex portions 4 are arranged at the peripheral edge portion of the end portion of the main body 2 at intervals so that after the main body 2 is gripped at the time of friction. It is possible to quickly start the friction work by bringing any of the friction parts 3 into contact with the surface of the paper without rotating the main body 2 significantly. Furthermore, since there are a plurality of friction parts 3, only one friction part 3 is worn. It is possible to suppress the occurrence of friction and maintain the proper shape of each frictional portion 3 for a long period of time.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が弾性材料により形成され、凸部4が径方向の可撓性を有することにより、摩擦時、凸部4が紙面との接触により径方向内方に変形し、摩擦部3と紙面との確実な接触が得られる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the convex portion 4 is formed of an elastic material, and the convex portion 4 has radial flexibility, so that the convex portion 4 is not in contact with the paper surface during friction. Is deformed inward in the radial direction, and reliable contact between the friction portion 3 and the paper surface can be obtained.

<第4の実施の形態>
本発明の第4の実施の形態の摩擦具1及び熱変色性筆記具11を図11乃至図13に示す。本実施の形態の摩擦具1及び熱変色性筆記具11は、本体2と、本体2の端部に設けられる摩擦部3とを備える。
<Fourth Embodiment>
A friction tool 1 and a thermochromic writing instrument 11 according to a fourth embodiment of the present invention are shown in FIGS. 11 to 13. The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment include a main body 2 and a friction portion 3 provided at an end of the main body 2.

・本体
本体2は、筒状体(例えば四角筒体)または柱状体(例えば四角柱体)である。本体2を構成する材料としては、合成樹脂(例えば、ポリカーボネイト、ポリプロピレン)、金属、木材等が挙げられる。
-Main body The main body 2 is a cylindrical body (for example, a square cylinder) or a columnar body (for example, a square cylinder). Examples of the material forming the main body 2 include synthetic resin (for example, polycarbonate, polypropylene), metal, wood and the like.

本体2は、内部が空洞の筒状体の場合、熱変色性筆記具11に用いる軸筒、または熱変色性筆記具11に用いるキャップを構成することができる。前記熱変色性筆記具11に用いる軸筒は、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具11における軸筒である。前記熱変色性筆記具11に用いるキャップは、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具11における軸筒のペン先側に装着されるキャップである。 When the main body 2 is a hollow cylindrical body, the main body 2 can form a barrel used for the thermochromic writing instrument 11 or a cap used for the thermochromic writing instrument 11. The barrel used in the thermochromic writing instrument 11 is the barrel in the thermochromic writing instrument 11 having a pen tip capable of containing the thermochromic ink therein and ejecting the thermochromic ink. The cap used for the thermochromic writing instrument 11 is mounted on the pen tip side of the barrel of the thermochromic writing instrument 11 that accommodates the thermochromic ink inside and has a pen tip capable of ejecting the thermochromic ink. It is a cap.

・摩擦部(凸部)
本体2の端部周縁部(本体2の端部の径方向外周縁部近傍)の角部に、軸方向外方(図面で上方)に突出する複数(例えば4個)の凸部4が形成される。各々の凸部4は、本体2の端部周縁部に等間隔で配置される。各々の凸部4(即ち、各々の凸部4の頂部41の軸方向外面及び各々の凸部4の頂部41の径方向外面)が摩擦部3となる。各々の凸部4は、軸方向内方端部が本体2の端部周縁部の軸方向外面に設けられ、軸方向外方端部が本体2の端部周縁部より軸方向外方に位置される。
・Friction (convex)
A plurality of (for example, four) convex portions 4 projecting axially outward (upward in the drawing) are formed at the corners of the peripheral edge portion of the main body 2 (in the vicinity of the radial outer peripheral edge portion of the end portion of the main body 2). To be done. The respective convex portions 4 are arranged at equal intervals on the peripheral edge portion of the end portion of the main body 2. Each convex portion 4 (that is, the axial outer surface of the top 41 of each convex portion 4 and the radial outer surface of the top 41 of each convex portion 4) serves as the friction portion 3. Each of the protrusions 4 has an axially inner end portion provided on an axially outer surface of an end peripheral portion of the main body 2, and an axial outer end portion positioned axially outward from the end peripheral portion of the main body 2. To be done.

各々の凸部4は、軸線に対して垂直な平面よりなる頂部41と、頂部41より軸方向内方(図面で下方)に延びる両側の側部42とを備える。各々の凸部4は、略三角柱状に形成される。各々の凸部4の径方向外面は、軸線に対して略平行な二つの平面よりなる。各々の凸部4の径方向内面は、軸線に対して略平行な一つの平面よりなる。尚、各々の凸部4の頂部41は、平面以外に先細状(例えば先細凸曲面状)であってもよい。 Each of the convex portions 4 includes a top portion 41 formed of a plane perpendicular to the axis and side portions 42 on both sides extending axially inward (downward in the drawing) from the top portion 41. Each convex portion 4 is formed in a substantially triangular prism shape. The radial outer surface of each convex portion 4 is composed of two planes substantially parallel to the axis. The inner surface in the radial direction of each of the protrusions 4 is formed by one plane substantially parallel to the axis. The top 41 of each convex portion 4 may have a tapered shape (for example, a tapered convex curved surface shape) other than a flat surface.

各々の凸部4は、弾性材料から形成され、例えば、弾性を有する合成樹脂(ゴム、エラストマー)が挙げられ、例えば、シリコーン樹脂、SBS樹脂(スチレン−ブタジエン−スチレン共重合体)、SEBS樹脂(スチレン−エチレン−ブタジエン−スチレン共重合体)、ポリエステル系樹脂、オレフィン系樹脂等が挙げられ、特に、高摩耗性の弾性材料(例えば、消しゴム等)からなるものよりも、摩擦時に摩耗屑が生じない低摩耗性の弾性材料からなることが好ましい。凸部4が弾性材料からなることにより、凸部4が径方向の可撓性を有する。尚、本実施の形態では、凸部4全体が弾性材料によって形成されるが、摩擦部3を構成するためには少なくとも凸部4の頂部41が弾性材料であればよい。 Each of the convex portions 4 is formed of an elastic material, and examples thereof include elastic synthetic resins (rubber, elastomer), such as silicone resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin ( Styrene-ethylene-butadiene-styrene copolymer), polyester resins, olefin resins, etc., and abrasion debris is generated during rubbing compared with those made of highly abrasion-resistant elastic materials (e.g., eraser). It is preferably made of a low wear elastic material. Since the convex portion 4 is made of an elastic material, the convex portion 4 has radial flexibility. In the present embodiment, the entire convex portion 4 is formed of an elastic material, but at least the top portion 41 of the convex portion 4 may be an elastic material in order to form the friction portion 3.

・基部
本体2の端部は、弾性材料によりなる基部6が四角平面状に設けられる。基部6の軸方向外面に各々凸部4が一体に形成される。凸部4及び基部6は、本体2に嵌合、螺着、熱融着、接着等により固定され、特に、本体2が合成樹脂の場合、本体2に2色成形により固定してもよい。基部6の軸方向外面は、軸線に対して垂直な面よりなる。
-At the end of the base body 2, a base 6 made of an elastic material is provided in a square planar shape. The protrusions 4 are integrally formed on the outer surface of the base 6 in the axial direction. The convex portion 4 and the base portion 6 are fixed to the main body 2 by fitting, screwing, heat-sealing, adhering, etc. In particular, when the main body 2 is a synthetic resin, it may be fixed to the main body 2 by two-color molding. The outer surface in the axial direction of the base 6 is a surface perpendicular to the axis.

・周縁凹部
隣り合う凸部4と凸部4の間(凸部4相互間)には、軸方向外方に開口され且つ径方向外方に開口される周縁凹部51が形成される。各々の周縁凹部51は、軸線に対して垂直な面よりなる基部6の軸方向外面と、凸部4の両側の側部42により形成される。
-Peripheral Recesses Between the adjacent convex portions 4 and the convex portions 4 (between the convex portions 4), a peripheral concave portion 51 that is opened axially outward and radially outward is formed. Each of the peripheral concave portions 51 is formed by the axial outer surface of the base portion 6 which is a surface perpendicular to the axis and the side portions 42 on both sides of the convex portion 4.

・中央凹部
凸部4は本体2の端部の軸方向外面の中央には形成されず、本体2の端部の軸方向外面の中央には軸方向外方に開口する中央凹部52が形成される。中央凹部52は、各々の周縁凹部51と径方向に連通される。各々の周縁凹部51と中央凹部52とにより、凸部4を除く本体2の端部の軸方向外面に凹部5(透視部)が形成される。中央凹部52の軸方向内方の深さと周縁凹部51の軸方向内方の深さが同じであり、中央凹部52の底部と各々の周縁凹部51の底部は連続した一つの平面を構成する。これ以外に、中央凹部52は各々の周縁凹部51より軸方向内方(図面で下方)に深く形成される構成でもよい。
The central concave convex portion 4 is not formed at the center of the axial outer surface of the end of the main body 2, and the central concave portion 52 that opens axially outward is formed at the center of the axial outer surface of the end of the main body 2. It The central recess 52 communicates with each peripheral recess 51 in the radial direction. The peripheral recessed portion 51 and the central recessed portion 52 form a recessed portion 5 (transparent portion) on the axially outer surface of the end portion of the main body 2 excluding the protruding portion 4. The depth of the central recess 52 in the axial direction and the depth of the peripheral recess 51 in the axial direction are the same, and the bottom of the central recess 52 and the bottom of each peripheral recess 51 constitute one continuous plane. Alternatively, the central recess 52 may be formed deeper inward (downward in the drawing) in the axial direction than each peripheral recess 51.

・摩擦時
摩擦時、本体2を把持し、本体2を紙面に対して垂直方向から少しの角度だけ傾けて、紙面に摩擦部3(具体的には凸部4の頂部41の径方向の外周縁部)を接触させる。摩擦時、本体2の端部の凹部5(凸部4相互間の周縁凹部51及び本体2端部の中央凹部52)を介して、紙面に接触する凸部4(具体的には凸部4の径方向内面)を視認することができる。(図12参照)
During friction When gripping, the main body 2 is gripped, the main body 2 is tilted at a slight angle from the vertical direction with respect to the paper surface, and the friction portion 3 (specifically, the outside of the top portion 41 of the convex portion 4 in the radial direction is applied to the paper surface). The peripheral edge). At the time of friction, the convex portion 4 (specifically, the convex portion 4) that comes into contact with the paper surface through the concave portion 5 at the end portion of the main body 2 (the peripheral concave portion 51 between the convex portions 4 and the central concave portion 52 at the end portion of the main body 2). The inner surface in the radial direction) can be visually confirmed. (See Figure 12)

本実施の形態の摩擦具1及び熱変色性筆記具11は、熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部3を本体2の端部に備えた摩擦具1であって、本体2の端部周縁部に軸方向外方に突出する非環状の凸部4が形成され、凸部4が摩擦部3となり、凸部4を除く本体2の端部の軸方向外面に、径方向外方に開口され且つ軸方向外方に開口される凹部5が形成され、摩擦時に凹部5を通して凸部4が視認可能に構成されることにより、摩擦時、摩擦部3と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment are provided with a friction portion 3 at the end of the main body 2 that has a friction portion 3 that rubs a thermochromic handwriting and thermally discolors the handwriting by frictional heat generated at that time. In the tool 1, a non-annular convex portion 4 that projects outward in the axial direction is formed on the peripheral edge portion of the main body 2, the convex portion 4 serves as the friction portion 3, and the end portion of the main body 2 excluding the convex portion 4 is formed. A concave portion 5 that is opened radially outward and axially outward is formed on the outer surface in the axial direction of the, and the convex portion 4 is configured to be visible through the concave portion 5 at the time of friction. A contact portion between the portion 3 and the paper surface can be easily visually recognized from the outside, and a portion having a small thermochromic handwriting can be surely thermally discolored.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が、本体2の端部周縁部に間隔を置いて複数、配置されることにより、摩擦時、本体2を把持した後、本体2を大きく回転することなく、何れかの摩擦部3を紙面に接触させて迅速に摩擦作業を開始でき、さらに、摩擦部3が複数箇所存在するため、一つの摩擦部3のみが磨耗することを抑え、長期にわたり各々の摩擦部3の適正な形状を維持できる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the plurality of convex portions 4 are arranged at the peripheral edge portion of the end portion of the main body 2 at intervals so that after the main body 2 is gripped at the time of friction. It is possible to quickly start the friction work by bringing any of the friction parts 3 into contact with the surface of the paper without rotating the main body 2 significantly. Furthermore, since there are a plurality of friction parts 3, only one friction part 3 is worn. It is possible to suppress the occurrence of friction and maintain the proper shape of each frictional portion 3 for a long period of time.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が弾性材料により形成され、凸部4が径方向の可撓性を有することにより、摩擦時、凸部4が紙面との接触により径方向内方に変形し、摩擦部3と紙面との確実な接触が得られる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the convex portion 4 is formed of an elastic material, and the convex portion 4 has radial flexibility, so that the convex portion 4 is not in contact with the paper surface during friction. Is deformed inward in the radial direction, and reliable contact between the friction portion 3 and the paper surface can be obtained.

<第5の実施の形態>
本発明の第5の実施の形態の摩擦具1及び熱変色性筆記具11を図14乃至図16に示す。本実施の形態の摩擦具1及び熱変色性筆記具11は、本体2と、本体2の端部に設けられる摩擦部3とを備える。
<Fifth Embodiment>
A friction tool 1 and a thermochromic writing instrument 11 according to a fifth embodiment of the present invention are shown in FIGS. 14 to 16. The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment include a main body 2 and a friction portion 3 provided at an end of the main body 2.

・本体
本体2は、筒状体(例えば、円筒体)または柱状体(例えば、円柱体)である。本体2を構成する材料としては、合成樹脂(例えば、ポリカーボネイト、ポリプロピレン)、金属、木材等が挙げられる。
-Main body The main body 2 is a cylindrical body (for example, a cylindrical body) or a columnar body (for example, a cylindrical body). Examples of the material forming the main body 2 include synthetic resin (for example, polycarbonate, polypropylene), metal, wood and the like.

本体2は、内部が空洞の筒状体の場合、熱変色性筆記具11に用いる軸筒、または熱変色性筆記具11に用いるキャップを構成することができる。前記熱変色性筆記具11に用いる軸筒は、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具11における軸筒である。前記熱変色性筆記具11に用いるキャップは、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具11における軸筒のペン先側に装着されるキャップである。 When the main body 2 is a hollow cylindrical body, the main body 2 can form a barrel used for the thermochromic writing instrument 11 or a cap used for the thermochromic writing instrument 11. The barrel used in the thermochromic writing instrument 11 is the barrel in the thermochromic writing instrument 11 having a pen tip capable of containing the thermochromic ink therein and ejecting the thermochromic ink. The cap used for the thermochromic writing instrument 11 is mounted on the pen tip side of the barrel of the thermochromic writing instrument 11 that accommodates the thermochromic ink inside and has a pen tip capable of ejecting the thermochromic ink. It is a cap.

・摩擦部(凸部)
本体2の端部周縁部(本体2の端部の径方向外周縁部近傍)に、軸方向外方(図面で上方)に突出する1個の凸部4が形成される。凸部4(即ち、各々の凸部4の頂部41の軸方向外面及び各々の凸部4の頂部41の径方向外面)が摩擦部3となる。凸部4は、軸方向内方端部が本体2の端部周縁部の軸方向外面に設けられ、軸方向外方端部が本体2の端部周縁部より軸方向外方に位置される。
・Friction (convex)
On the peripheral edge of the end portion of the main body 2 (in the vicinity of the radial outer peripheral edge portion of the end portion of the main body 2), one convex portion 4 protruding outward in the axial direction (upward in the drawing) is formed. The convex portions 4 (that is, the axial outer surface of the top portion 41 of each convex portion 4 and the radial outer surface of the top portion 41 of each convex portion 4) serve as the friction portion 3. The convex portion 4 has an axially inner end portion provided on the axially outer surface of the end peripheral portion of the main body 2, and an axial outer end portion thereof is positioned axially outward from the end peripheral portion of the main body 2. ..

凸部4は、軸線に対して垂直な平面よりなる頂部41と、頂部41より両側に軸方向内方(図面で下方)に向かうに従い次第に両者の距離が広がる傾斜面よりなる側部42とを備える。凸部4は、正面視で略三角状または略台形形状の板形状により形成される。凸部4の径方向外面は、凸曲面状である。凸部4の径方向内面は、凹曲面状である。尚、凸部4の頂部41は、平面以外に先細状(例えば先細状凸曲面)であってもよい。 The convex portion 4 has a top portion 41 formed of a plane perpendicular to the axis, and a side portion 42 formed of an inclined surface on which the distance between the top portion 41 and the top portion 41 gradually increases inward in the axial direction (downward in the drawing). Prepare The convex portion 4 is formed in a plate shape having a substantially triangular shape or a substantially trapezoidal shape in a front view. The radially outer surface of the convex portion 4 has a convex curved surface shape. The radially inner surface of the convex portion 4 has a concave curved surface shape. The top portion 41 of the convex portion 4 may have a tapered shape (for example, a tapered convex curved surface) other than a flat surface.

凸部4は、弾性材料から形成され、例えば、弾性を有する合成樹脂(ゴム、エラストマー)が挙げられ、例えば、シリコーン樹脂、SBS樹脂(スチレン−ブタジエン−スチレン共重合体)、SEBS樹脂(スチレン−エチレン−ブタジエン−スチレン共重合体)、ポリエステル系樹脂、オレフィン系樹脂等が挙げられ、特に、高摩耗性の弾性材料(例えば、消しゴム等)からなるものよりも、摩擦時に摩耗屑が生じない低摩耗性の弾性材料からなることが好ましい。凸部4が弾性材料からなることにより、凸部4が径方向の可撓性を有する。尚、本実施の形態では、凸部4全体が弾性材料によって形成されるが、摩擦部3を構成するためには少なくとも凸部4の頂部41が弾性材料であればよい。 The convex portion 4 is formed of an elastic material, and examples thereof include elastic synthetic resins (rubber, elastomer), such as silicone resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin (styrene-). Ethylene-butadiene-styrene copolymer), polyester-based resins, olefin-based resins, and the like. In particular, they are less likely to cause abrasion debris during rubbing than those made of highly abrasion-resistant elastic materials (for example, eraser). It is preferably made of an abradable elastic material. Since the convex portion 4 is made of an elastic material, the convex portion 4 has radial flexibility. In the present embodiment, the entire convex portion 4 is formed of an elastic material, but at least the top portion 41 of the convex portion 4 may be an elastic material in order to form the friction portion 3.

・基部
本体2の端部は、弾性材料によりなる基部6が環状に設けられる。基部6の軸方向外面に凸部4が一体に形成される。凸部4及び基部6は、本体2に嵌合、螺着、熱融着、接着等により固定され、特に、本体2が合成樹脂の場合、凸部4及び基部6は、本体2に2色成形により固定してもよい。基部6の軸方向外面は、軸線に対して垂直な面よりなる。
A base 6 made of an elastic material is annularly provided at the end of the base body 2. The convex portion 4 is integrally formed on the outer surface of the base portion 6 in the axial direction. The convex portion 4 and the base portion 6 are fixed to the main body 2 by fitting, screwing, heat-sealing, adhering, etc. In particular, when the main body 2 is a synthetic resin, the convex portion 4 and the base portion 6 have two colors on the main body 2. It may be fixed by molding. The outer surface in the axial direction of the base 6 is a surface perpendicular to the axis.

・周縁凹部
凸部4を除く本体2の端部の軸方向外面(基部6の軸方向外面)には、軸方向外方に開口され且つ径方向外方に開口される周縁凹部51が形成される。周縁凹部51は、軸線に対して垂直な面よりなる基部6の軸方向外面と、凸部4の両側の側部42により形成される。
A peripheral edge concave portion 51 that is open outward in the axial direction and outward in the radial direction is formed on the outer surface in the axial direction (the outer surface in the axial direction of the base portion 6) of the end of the main body 2 excluding the convex portion 4 around the peripheral edge recess. It The peripheral edge concave portion 51 is formed by the axial outer surface of the base portion 6 which is a surface perpendicular to the axis and the side portions 42 on both sides of the convex portion 4.

・中央凹部
凸部4は本体2の端部の軸方向外面の中央には形成されず、本体2の端部の軸方向外面の中央には軸方向外方に開口する中央凹部52が形成される。中央凹部52は、周縁凹部51と径方向に連通される。周縁凹部51と中央凹部52とにより、凸部4を除く本体2の端部の軸方向外面に凹部5(透視部)が形成される。中央凹部52は周縁凹部51より軸方向内方に深く形成されているが、これ以外にも、中央凹部52の軸方向内方の深さと周縁凹部51の軸方向内方の深さが同じである構成(中央凹部52の底面と周縁凹部51の底面が一つの連続した面である構成)でもよい。
The central concave convex portion 4 is not formed at the center of the axial outer surface of the end of the main body 2, and the central concave portion 52 that opens axially outward is formed at the center of the axial outer surface of the end of the main body 2. It The central recess 52 is in radial communication with the peripheral recess 51. Due to the peripheral concave portion 51 and the central concave portion 52, a concave portion 5 (transparent portion) is formed on the axially outer surface of the end portion of the main body 2 excluding the convex portion 4. The central recess 52 is formed deeper inward in the axial direction than the peripheral recess 51, but in addition to this, the axial inward depth of the central recess 52 and the axial inward depth of the peripheral recess 51 are the same. A certain configuration (a configuration in which the bottom surface of the central recess 52 and the bottom surface of the peripheral recess 51 are one continuous surface) may be used.

・摩擦時
摩擦時、本体2を把持し、本体2を紙面に対して垂直方向から少しの角度だけ傾けて、紙面に摩擦部3(具体的には凸部4の頂部41の径方向の外周縁部)を接触させる。摩擦時、本体2の端部の凹部5(周縁凹部51及び中央凹部52)を介して、紙面に接触する凸部4(具体的には凸部4の径方向内面または凸部4の周方向側面)を視認することができる。(図15参照)
During friction When gripping, the main body 2 is gripped, the main body 2 is tilted at a slight angle from the vertical direction with respect to the paper surface, and the friction portion 3 (specifically, the outside of the top portion 41 of the convex portion 4 in the radial direction is applied to the paper surface). The peripheral edge). During friction, the convex portion 4 (specifically, the radially inner surface of the convex portion 4 or the circumferential direction of the convex portion 4 is in contact with the paper surface through the concave portion 5 (the peripheral concave portion 51 and the central concave portion 52) at the end portion of the main body 2). The side) can be visually recognized. (See Figure 15)

本実施の形態の摩擦具1及び熱変色性筆記具11は、熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部3を本体2の端部に備えた摩擦具1であって、本体2の端部周縁部に軸方向外方に突出する非環状の凸部4が形成され、凸部4が摩擦部3となり、凸部4を除く本体2の端部の軸方向外面に、径方向外方に開口され且つ軸方向外方に開口される凹部5が形成され、摩擦時に凹部5を通して凸部4が視認可能に構成されることにより、摩擦時、摩擦部3と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment are provided with a friction portion 3 at the end of the main body 2 which is provided with a friction portion 3 that rubs a thermochromic handwriting and thermally discolors the handwriting by frictional heat generated at that time. In the tool 1, a non-annular convex portion 4 that projects outward in the axial direction is formed on the peripheral edge portion of the main body 2, the convex portion 4 serves as the friction portion 3, and the end portion of the main body 2 excluding the convex portion 4 is formed. A concave portion 5 that is opened radially outward and axially outward is formed on the outer surface in the axial direction of the, and the convex portion 4 is configured to be visible through the concave portion 5 at the time of friction. A contact portion between the portion 3 and the paper surface can be easily visually recognized from the outside, and a portion having a small thermochromic handwriting can be surely thermally discolored.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が弾性材料により形成され、凸部4が径方向の可撓性を有することにより、摩擦時、凸部4が紙面との接触により径方向内方に変形し、摩擦部3と紙面との確実な接触が得られる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the convex portion 4 is formed of an elastic material, and the convex portion 4 has radial flexibility, so that the convex portion 4 is not in contact with the paper surface during friction. Is deformed inward in the radial direction, and reliable contact between the friction portion 3 and the paper surface can be obtained.

<第6の実施の形態>
本発明の第6の実施の形態の摩擦具1及び熱変色性筆記具11を図17乃至図19に示す。本実施の形態の摩擦具1及び熱変色性筆記具11は、本体2と、本体2の端部に設けられる摩擦部3とを備える。
<Sixth Embodiment>
A friction tool 1 and a thermochromic writing instrument 11 according to a sixth embodiment of the present invention are shown in FIGS. 17 to 19. The friction tool 1 and the thermochromic writing instrument 11 of this embodiment include a main body 2 and a friction portion 3 provided at an end of the main body 2.

・本体
本体2は、筒状体(例えば円筒体)または柱状体(例えば円柱体)である。本体2を構成する材料としては、合成樹脂(例えば、ポリカーボネイト、ポリプロピレン)、金属、木材等が挙げられる。
-Main body The main body 2 is a cylindrical body (for example, a cylindrical body) or a columnar body (for example, a cylindrical body). Examples of the material forming the main body 2 include synthetic resin (for example, polycarbonate, polypropylene), metal, wood and the like.

本体2は、内部が空洞の筒状体の場合、熱変色性筆記具11に用いる軸筒、または熱変色性筆記具11に用いるキャップを構成することができる。前記熱変色性筆記具11に用いる軸筒は、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具における軸筒である。前記熱変色性筆記具11に用いるキャップは、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具における軸筒のペン先側に装着されるキャップである。 When the main body 2 is a hollow cylindrical body, the main body 2 can form a barrel used for the thermochromic writing instrument 11 or a cap used for the thermochromic writing instrument 11. The barrel used in the thermochromic writing instrument 11 is a barrel in a thermochromic writing instrument having a pen tip capable of containing the thermochromic ink therein and ejecting the thermochromic ink. The cap used for the thermochromic writing instrument 11 is a cap to be mounted on the pen tip side of the barrel of the thermochromic writing instrument, the pen containing the thermochromic ink inside and having a pen tip capable of discharging the thermochromic ink. Is.

・摩擦部(凸部)
本体2の端部周縁部(本体2の端部の径方向外周縁部近傍)に、軸方向外方(図面で上方)に突出する複数(例えば3個)の凸部4が形成される。各々の凸部4は、本体2の端部周縁部に等間隔で配置される。各々の凸部4(即ち、各々の凸部4の頂部41の軸方向外面及び各々の凸部4の頂部41の径方向外面)が摩擦部3となる。各々の凸部4は、軸方向内方部が本体2の端部周縁部の径方向外面に突設され、軸方向外方部が本体2の端部周縁部より軸方向外方に突出される。
・Friction (convex)
A plurality of (for example, three) convex portions 4 projecting axially outward (upward in the drawing) are formed on the peripheral edge portion of the main body 2 (in the vicinity of the radial outer peripheral edge portion of the end portion of the main body 2). The respective convex portions 4 are arranged at equal intervals on the peripheral edge portion of the end portion of the main body 2. Each convex portion 4 (that is, the axial outer surface of the top 41 of each convex portion 4 and the radial outer surface of the top 41 of each convex portion 4) serves as the friction portion 3. Each of the protrusions 4 has an axially inner portion projecting from a radial outer surface of an end peripheral portion of the main body 2, and an axial outer portion protruding axially outward from the end peripheral portion of the main body 2. It

各々の凸部4は、軸線に対して垂直な平面よりなる頂部41と、頂部41より軸方向内方(図面で下方)に延びる両側の側部42とを備える。各々の凸部4は、略半円柱状または板状に形成される。各々の凸部4の径方向外面は、凸曲面状である。各々の凸部4の径方向内面は、凹曲面状である。尚、各々の凸部4の頂部41は、平面以外に先細状(例えば先細状凸曲面)であってもよい。 Each of the convex portions 4 includes a top portion 41 formed of a plane perpendicular to the axis and side portions 42 on both sides extending axially inward (downward in the drawing) from the top portion 41. Each convex portion 4 is formed in a substantially semi-cylindrical shape or a plate shape. The radial outer surface of each convex portion 4 has a convex curved surface shape. The radially inner surface of each convex portion 4 has a concave curved surface shape. The top 41 of each protrusion 4 may have a tapered shape (for example, a tapered convex curved surface) other than a flat surface.

各々の凸部4は、弾性材料から形成され、例えば、弾性を有する合成樹脂(ゴム、エラストマー)が挙げられ、例えば、シリコーン樹脂、SBS樹脂(スチレン−ブタジエン−スチレン共重合体)、SEBS樹脂(スチレン−エチレン−ブタジエン−スチレン共重合体)、ポリエステル系樹脂、オレフィン系樹脂等が挙げられ、特に、高摩耗性の弾性材料(例えば、消しゴム等)からなるものよりも、摩擦時に摩耗屑が生じない低摩耗性の弾性材料からなることが好ましい。凸部4が弾性材料からなることにより、凸部4が径方向の可撓性を有する。尚、本実施の形態では、凸部4全体が弾性材料によって形成されるが、摩擦部3を構成するためには少なくとも凸部4の頂部41が弾性材料であればよい。 Each of the convex portions 4 is formed of an elastic material, and examples thereof include elastic synthetic resins (rubber, elastomer), such as silicone resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin ( Styrene-ethylene-butadiene-styrene copolymer), polyester resins, olefin resins, etc., and abrasion debris is generated during rubbing compared with those made of highly abrasion-resistant elastic materials (e.g., eraser). It is preferably made of a low wear elastic material. Since the convex portion 4 is made of an elastic material, the convex portion 4 has radial flexibility. In the present embodiment, the entire convex portion 4 is formed of an elastic material, but at least the top portion 41 of the convex portion 4 may be an elastic material in order to form the friction portion 3.

・基部
本体2の端部は、弾性材料によりなる基部6が円板状に設けられる。基部の径方向外面に各々凸部4が一体に形成される。凸部4及び基部6は、本体2に嵌合、螺着、熱融着、接着等により固定され、特に、本体2が合成樹脂の場合、凸部4及び基部6は、本体2に2色成形により固定してもよい。基部6の軸方向外面は、軸線に対して垂直な面よりなる。
A base 6 made of an elastic material is provided in a disk shape at the end of the base body 2. The convex portions 4 are integrally formed on the radial outer surface of the base portion. The convex portion 4 and the base portion 6 are fixed to the main body 2 by fitting, screwing, heat-sealing, adhering, etc. In particular, when the main body 2 is a synthetic resin, the convex portion 4 and the base portion 6 have two colors on the main body 2. It may be fixed by molding. The outer surface in the axial direction of the base 6 is a surface perpendicular to the axis.

・周縁凹部
隣り合う凸部4と凸部4の間(凸部4相互間)には、軸方向外方に開口され且つ径方向外方に開口される周縁凹部51が形成される。各々の周縁凹部51は、軸線に対して垂直な面よりなる基部6の軸方向外面と、凸部4の両側の側部42により形成される。
-Peripheral Recesses Between the adjacent convex portions 4 and the convex portions 4 (between the convex portions 4), a peripheral concave portion 51 that is opened axially outward and radially outward is formed. Each of the peripheral concave portions 51 is formed by the axial outer surface of the base portion 6 which is a surface perpendicular to the axis and the side portions 42 on both sides of the convex portion 4.

・中央凹部
凸部4は本体2の端部の軸方向外面の中央には形成されず、本体2の端部の軸方向外面の中央には軸方向外方に開口する中央凹部52が形成される。中央凹部52は、各々の周縁凹部51と径方向に連通される。各々の周縁凹部51と中央凹部52とにより、凸部4を除く本体2の端部の軸方向外面に凹部5(透視部)が形成される。中央凹部52の軸方向内方の深さと周縁凹部51の軸方向内方の深さが同じであり、中央凹部52の底部と各々の周縁凹部51の底部は連続した一つの平面を構成する。これ以外に、中央凹部52は各々の周縁凹部51より軸方向内方(図面で下方)に深く形成される構成でもよい。
The central concave convex portion 4 is not formed at the center of the axial outer surface of the end of the main body 2, and the central concave portion 52 that opens axially outward is formed at the center of the axial outer surface of the end of the main body 2. It The central recess 52 communicates with each peripheral recess 51 in the radial direction. The peripheral recessed portion 51 and the central recessed portion 52 form a recessed portion 5 (transparent portion) on the axially outer surface of the end portion of the main body 2 excluding the protruding portion 4. The depth of the central recess 52 in the axial direction and the depth of the peripheral recess 51 in the axial direction are the same, and the bottom of the central recess 52 and the bottom of each peripheral recess 51 constitute one continuous plane. Alternatively, the central recess 52 may be formed deeper inward (downward in the drawing) in the axial direction than each peripheral recess 51.

・摩擦時
摩擦時、本体2を把持し、本体2を紙面に対して垂直方向から少しの角度だけ傾けて、紙面に摩擦部3(具体的には凸部4の頂部41の径方向の外周縁部)を接触させる。摩擦時、本体2端部の凹部5(凸部4相互間の周縁凹部51及び本体2端部の中央凹部52)を介して、紙面に接触する凸部4(具体的には凸部4の径方向内面または凸部4の周方向側面)を視認することができる。(図18参照)
During friction When gripping, the main body 2 is gripped, the main body 2 is tilted at a slight angle from the vertical direction with respect to the paper surface, and the friction portion 3 (specifically, the outside of the top portion 41 of the convex portion 4 in the radial direction is applied to the paper surface). The peripheral edge). At the time of friction, the convex portion 4 (specifically, the convex portion 4) that comes into contact with the paper surface via the concave portion 5 at the end of the main body 2 (the peripheral concave portion 51 between the convex portions 4 and the central concave portion 52 at the end of the main body 2). The inner surface in the radial direction or the side surface in the circumferential direction of the convex portion 4) can be visually recognized. (See Figure 18)

本実施の形態の摩擦具1及び熱変色性筆記具11は、熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部3を本体2の端部に備えた摩擦具1であって、本体2の端部周縁部に軸方向外方に突出する非環状の凸部4が形成され、凸部4が摩擦部3となり、凸部4を除く本体2の端部の軸方向外面に、径方向外方に開口され且つ軸方向外方に開口される凹部5が形成され、摩擦時に凹部5を通して凸部4が視認可能に構成されることにより、摩擦時、摩擦部3と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment are provided with a friction portion 3 at the end of the main body 2 which is provided with a friction portion 3 that rubs a thermochromic handwriting and thermally discolors the handwriting by frictional heat generated at that time. In the tool 1, a non-annular convex portion 4 that projects outward in the axial direction is formed on the peripheral edge portion of the main body 2, the convex portion 4 serves as the friction portion 3, and the end portion of the main body 2 excluding the convex portion 4 is formed. A concave portion 5 that is opened radially outward and axially outward is formed on the outer surface in the axial direction of the, and the convex portion 4 is configured to be visible through the concave portion 5 at the time of friction. A contact portion between the portion 3 and the paper surface can be easily visually recognized from the outside, and a portion having a small thermochromic handwriting can be surely thermally discolored.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が、本体2の端部周縁部に間隔を置いて複数、配置されることにより、摩擦時、本体2を把持した後、本体2を大きく回転することなく、何れかの摩擦部3を紙面に接触させて迅速に摩擦作業を開始でき、さらに、摩擦部3が複数箇所存在するため、一つの摩擦部3のみが磨耗することを抑え、長期にわたり各々の摩擦部3の適正な形状を維持できる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the plurality of convex portions 4 are arranged at the peripheral edge portion of the end portion of the main body 2 at intervals so that after the main body 2 is gripped at the time of friction. It is possible to quickly start the friction work by bringing any of the friction parts 3 into contact with the surface of the paper without rotating the main body 2 significantly. Furthermore, since there are a plurality of friction parts 3, only one friction part 3 is worn. It is possible to suppress the occurrence of friction and maintain the proper shape of each frictional portion 3 for a long period of time.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4が弾性材料により形成され、凸部4が径方向の可撓性を有することにより、摩擦時、凸部4が紙面との接触により径方向内方に変形し、摩擦部3と紙面との確実な接触が得られる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the convex portion 4 is formed of an elastic material, and the convex portion 4 has radial flexibility, so that the convex portion 4 is not in contact with the paper surface during friction. Is deformed inward in the radial direction, and reliable contact between the friction portion 3 and the paper surface can be obtained.

本実施の形態の摩擦具1及び熱変色性筆記具11は、凸部4の径方向反対側の凹部5を通して凸部4を視認した際、凸部4の頂部41の外径(周方向の幅)が、凸部4の相互間の凹部5の軸方向外端部の間隔(周方向の幅)より小さく形成される。それにより、凹部5を通して凸部4の頂部41(摩擦部3)近傍を視認しやすくなる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, when the convex portion 4 is visually recognized through the concave portion 5 on the radial opposite side of the convex portion 4, the outer diameter of the top portion 41 of the convex portion 4 (width in the circumferential direction). ) Is formed to be smaller than the interval (width in the circumferential direction) between the axially outer ends of the concave portions 5 between the convex portions 4. This makes it easier to visually recognize the vicinity of the top portion 41 (friction portion 3) of the protrusion 4 through the recess 5.

<第7の実施の形態>
本発明の第7の実施の形態の摩擦具1及び熱変色性筆記具11を図20に示す。本実施の形態は、第1の実施の形態の変形例であり、第1の実施の形態と異なる点は、凸部4が支持部43と摩擦部3とからなる点であり、他の構成及び効果は第1の実施の実施の形態と共通であるため、説明を省略する。
<Seventh Embodiment>
FIG. 20 shows a friction tool 1 and a thermochromic writing instrument 11 according to a seventh embodiment of the present invention. The present embodiment is a modification of the first embodiment, and is different from the first embodiment in that the convex portion 4 is composed of the support portion 43 and the friction portion 3, and another configuration. Since and the effects are the same as those of the first embodiment, the description thereof will be omitted.

各々の凸部4が、支持部43と、該支持部43の頂部の径方向外面に設けられ、該支持部43と別材料からなる弾性材料よりなる摩擦部3とからなる。前記摩擦部3を構成する弾性材料は、例えば、弾性を有する合成樹脂(ゴム、エラストマー)が挙げられ、例えば、シリコーン樹脂、SBS樹脂(スチレン−ブタジエン−スチレン共重合体)、SEBS樹脂(スチレン−エチレン−ブタジエン−スチレン共重合体)、ポリエステル系樹脂、オレフィン系樹脂等が挙げられ、特に、高摩耗性の弾性材料(例えば、消しゴム等)からなるものよりも、摩擦時に摩耗屑が生じない低摩耗性の弾性材料からなることが好ましい。各々の支持部43は、摩擦部3より硬質の合成樹脂(例えば、ポリカーボネイト、ポリプロピレン、ポリエチレン等)により形成される。各々の支持部43と摩擦部3は、嵌合、螺着、熱融着、接着、2色成形等により固定される。 Each of the convex portions 4 is composed of a support portion 43 and a friction portion 3 which is provided on the radial outer surface of the top portion of the support portion 43 and is made of an elastic material different from the support portion 43. Examples of the elastic material forming the friction portion 3 include elastic synthetic resins (rubber and elastomer), such as silicone resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin (styrene-). Ethylene-butadiene-styrene copolymer), polyester-based resins, olefin-based resins, and the like. In particular, they are less likely to cause abrasion debris during rubbing than those made of highly abrasion-resistant elastic materials (for example, eraser). It is preferably made of an abradable elastic material. Each of the support portions 43 is formed of a synthetic resin (for example, polycarbonate, polypropylene, polyethylene, etc.) that is harder than the friction portion 3. The respective support portions 43 and the friction portion 3 are fixed by fitting, screwing, heat fusion, adhesion, two-color molding or the like.

本実施の形態の摩擦具1及び熱変色性筆記具11は、前記凸部4が、支持部43と、該支持部43の径方向外面に設けられ且つ該支持部43と別材料からなる弾性材料よりなる摩擦部3とからなることにより、支持部43の材料を適宜選択することより、摩擦時の凸部4の径方向内方への弾性変形量を自由に調節することができ、ソフトタッチからハードタッチまで自由に設定できる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, the convex portion 4 is provided with the support portion 43, and an elastic material which is provided on the radially outer surface of the support portion 43 and is made of a material different from the support portion 43. Since the friction portion 3 is made of a material, the amount of elastic deformation of the convex portion 4 inward in the radial direction at the time of friction can be freely adjusted by appropriately selecting the material of the support portion 43. You can freely set from to hard touch.

<第8の実施の形態>
本発明の第8の実施の形態の摩擦具1及び熱変色性筆記具11を図21乃至図22に示す。本実施の形態は第1の実施の形態の変形例であり、本体2の外面にガイド突起21を形成した点が第1の実施の形態と異なり、それ以外の構成及び作用効果は第1の実施の形態と共通であり、説明を省略する。
<Eighth Embodiment>
21 to 22 show a friction tool 1 and a thermochromic writing tool 11 according to an eighth embodiment of the present invention. The present embodiment is a modification of the first embodiment, and is different from the first embodiment in that a guide protrusion 21 is formed on the outer surface of the main body 2, and other configurations and operational effects are the same as those of the first embodiment. The description is omitted because it is the same as the embodiment.

ガイド突起21が、各々の凸部4の径方向の反対側の本体2外面に、複数本(例えば3本)突設される。各々のガイド突起21は、周縁凹部51の中心を通り、軸方向内方に延びる仮想延長線上に形成される。ガイド突起21の形状は、例えば、軸方向に延びるリブ、半球状突起が挙げられる。 A plurality of (for example, three) guide protrusions 21 are provided on the outer surface of the main body 2 on the opposite side in the radial direction of each protrusion 4. Each of the guide protrusions 21 is formed on a virtual extension line that passes through the center of the peripheral recess 51 and extends axially inward. Examples of the shape of the guide protrusion 21 include a rib extending in the axial direction and a hemispherical protrusion.

本発明の第8の実施の形態の摩擦具1及び熱変色性筆記具11は、摩擦時、本体2を把持する際、ガイド突起21を指で挟持したり、ガイド突起21上に指を載置したりすることにより、凸部4(摩擦部3)の周方向の向きを容易に識別し、迅速に摩擦作業を開始できる。 In the friction tool 1 and the thermochromic writing instrument 11 according to the eighth embodiment of the present invention, when the main body 2 is rubbed, the guide projection 21 is pinched with a finger, or the finger is placed on the guide projection 21. By doing so, the circumferential direction of the convex portion 4 (friction portion 3) can be easily identified, and the friction work can be started quickly.

<第9の実施の形態>
本発明の第9の実施の形態の摩擦具1及び熱変色性筆記具11を図23乃至図24に示す。
本実施の形態の摩擦具1及び熱変色性筆記具11は、本体2と、本体2の端部に設けられる摩擦部3とを備える。
<Ninth Embodiment>
23 to 24 show a friction tool 1 and a thermochromic writing instrument 11 according to a ninth embodiment of the present invention.
The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment include a main body 2 and a friction portion 3 provided at an end of the main body 2.

・本体
本体2は、筒状体(例えば円筒体)または柱状体(例えば円柱体)である。本体2を構成する材料としては、合成樹脂(例えば、ポリカーボネイト、ポリプロピレン)、金属、木材等が挙げられる。少なくとも本体2の端部は、筒状体であり、透明材料(例えば透明性の合成樹脂)により構成される。前記透明性の合成樹脂は、ポリカーボネイト、ポリプロピレン、ABS樹脂、ポリエチレンテレフタレート等が挙げられる。
-Main body The main body 2 is a cylindrical body (for example, a cylindrical body) or a columnar body (for example, a cylindrical body). Examples of the material forming the main body 2 include synthetic resin (for example, polycarbonate, polypropylene), metal, wood and the like. At least the end of the main body 2 is a tubular body and is made of a transparent material (for example, transparent synthetic resin). Examples of the transparent synthetic resin include polycarbonate, polypropylene, ABS resin, and polyethylene terephthalate.

本体2は、内部が空洞の筒状体の場合、熱変色性筆記具11に用いる軸筒、または熱変色性筆記具11に用いるキャップを構成することができる。前記熱変色性筆記具11に用いる軸筒は、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具における軸筒である。前記熱変色性筆記具11に用いるキャップは、内部に熱変色性インキを収容し該熱変色性インキが吐出可能なペン先を備えた熱変色性筆記具における軸筒のペン先側に装着されるキャップである。 When the main body 2 is a hollow cylindrical body, the main body 2 can form a barrel used for the thermochromic writing instrument 11 or a cap used for the thermochromic writing instrument 11. The barrel used in the thermochromic writing instrument 11 is a barrel in a thermochromic writing instrument having a pen tip capable of containing the thermochromic ink therein and ejecting the thermochromic ink. The cap used for the thermochromic writing instrument 11 is a cap to be mounted on the pen tip side of the barrel of the thermochromic writing instrument, the pen containing the thermochromic ink inside and having a pen tip capable of discharging the thermochromic ink. Is.

・摩擦部
本体2の端部の径方向外周縁部に、非環状の摩擦部3が、複数(例えば3個)、形成される。各々の摩擦部3は、本体2の端部周縁部に等間隔で配置される。本体2の端部には軸方向外方に開口し且つ径方向に貫通する取付凹部22が形成される。取付凹部22に摩擦部3が嵌合、接着、2色成形等により固定される。
A plurality of (for example, three) non-circular friction parts 3 are formed on the radially outer peripheral edge of the end of the friction part body 2. The friction portions 3 are arranged at equal intervals on the peripheral edge portion of the end portion of the main body 2. A mounting recess 22 is formed at an end of the main body 2 so as to open outward in the axial direction and penetrate in the radial direction. The friction portion 3 is fixed to the mounting recess 22 by fitting, bonding, two-color molding or the like.

・透視部
摩擦部3を除く本体2の筒状の端部は、透明材料よりなる。本体2の筒状の端部の中央には、軸方向外方に開口する中央凹部52が形成される。摩擦部3を除く本体2の筒状の端部の透明材料部分と、中央凹部52とにより、摩擦部3の径方向内面が視認可能な透視部7が設けられる。摩擦部3の軸方向端部と、前記透明材料部分の軸方向端部は、連続した同一端面により形成される。
The tubular end portion of the main body 2 excluding the transparent portion friction portion 3 is made of a transparent material. At the center of the tubular end of the main body 2, a central recess 52 is formed that is open outward in the axial direction. The transparent material portion of the tubular end portion of the main body 2 excluding the friction portion 3 and the central concave portion 52 provide the see-through portion 7 in which the radial inner surface of the friction portion 3 is visible. The axial end of the friction portion 3 and the axial end of the transparent material portion are formed by the same continuous end surface.

摩擦部3は、弾性材料から形成される。前記弾性材料としては、例えば、弾性を有する合成樹脂(ゴム、エラストマー)が挙げられ、例えば、シリコーン樹脂、SBS樹脂(スチレン−ブタジエン−スチレン共重合体)、SEBS樹脂(スチレン−エチレン−ブタジエン−スチレン共重合体)、ポリエステル系樹脂、オレフィン系樹脂等が挙げられ、特に、高摩耗性の弾性材料(例えば、消しゴム等)からなるものよりも、摩擦時に摩耗屑が生じない低摩耗性の弾性材料からなることが好ましい。 The friction part 3 is formed of an elastic material. Examples of the elastic material include elastic synthetic resins (rubber, elastomer), such as silicone resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin (styrene-ethylene-butadiene-styrene). Copolymers), polyester resins, olefin resins, etc., and particularly low-wear elastic materials that do not generate abrasion debris during rubbing, as compared with those made of high-wear elastic materials (eg, eraser). It is preferable that

・摩擦時
摩擦時、本体2を把持し、本体2を紙面に対して垂直方向から少しの角度だけ傾けて、紙面に摩擦部3を接触させる。摩擦時、本体2端部の透視部7を介して、紙面に接触する摩擦部3の径方向の内面を視認することができる。
During friction When gripping, the main body 2 is gripped, the main body 2 is tilted at a slight angle from the vertical direction with respect to the paper surface, and the friction portion 3 is brought into contact with the paper surface. During friction, the radial inner surface of the friction portion 3 contacting the paper surface can be visually recognized through the transparent portion 7 at the end of the main body 2.

本実施の形態の摩擦具1及び熱変色性筆記具11は、熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部3を本体2の端部に備えた摩擦具であって、前記本体2の端部周縁部の外面に非環状の摩擦部3を備え、前記摩擦部3を除く前記本体2の端部に、前記摩擦部3の径方向内面が透視可能な透視部7が設けられることにより、摩擦時、摩擦部3と紙面との接触部分を外部より容易に視認することができ、熱変色性の筆跡の細かい箇所を確実に熱変色させることができる。 The friction tool 1 and the thermochromic writing instrument 11 according to the present embodiment are provided with a friction portion 3 at the end of the main body 2 which is provided with a friction portion 3 that rubs a thermochromic handwriting and thermally discolors the handwriting by frictional heat generated at that time. A non-annular friction portion 3 is provided on the outer surface of the peripheral edge portion of the main body 2, and the radial inner surface of the friction portion 3 can be seen through the end portion of the main body 2 excluding the friction portion 3. By providing the transparent portion 7, it is possible to easily visually recognize the contact portion between the friction portion 3 and the paper surface from the outside during friction, and it is possible to surely thermally discolor a portion of a thermochromic handwriting having a small size. ..

本実施の形態の摩擦具1及び熱変色性筆記具11は、前記摩擦部3が、前記本体2の端部周縁部に間隔を置いて複数、設けられ、前記各々の摩擦部3の相互間に前記透視部7が形成されることにより、摩擦時、本体2を把持した後、本体2を大きく回転することなく、何れかの摩擦部3を紙面に接触させて迅速に摩擦作業を開始でき、さらに、摩擦部3が複数箇所存在するため、一つの摩擦部3のみが磨耗することを抑え、長期にわたり各々の摩擦部3の適正な形状を維持できる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, a plurality of the friction portions 3 are provided in the peripheral edge portion of the end portion of the main body 2 at intervals, and between the respective friction portions 3. Since the transparent portion 7 is formed, after the main body 2 is gripped at the time of friction, one of the friction portions 3 can be brought into contact with the paper surface without a large rotation of the main body 2 to quickly start the friction work. Furthermore, since there are a plurality of friction parts 3, it is possible to prevent only one friction part 3 from being worn and to maintain the proper shape of each friction part 3 for a long period of time.

本実施の形態の摩擦具1及び熱変色性筆記具11は、前記透視部7が透明材料により形成されることにより、摩擦部3が本体2の端部より軸方向外方に大きく突出せず、摩擦部3の周方向の側面を保護することがでる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, since the see-through part 7 is made of a transparent material, the friction part 3 does not largely project axially outward from the end of the main body 2, It is possible to protect the circumferential side surface of the friction portion 3.

本実施の形態の摩擦具1及び熱変色性筆記具11は、第8の実施の形態と同様、前記摩擦部3の径方向の反対側の本体2外面にガイド突起21が形成される構成も可能である。それにより、摩擦時、本体2を把持する際、ガイド突起21を指で挟持したり、ガイド突起21上に指を載置したりすることにより、凸部4(摩擦部3)の周方向の向きを容易に識別し、迅速に摩擦作業を開始できる。 The friction tool 1 and the thermochromic writing instrument 11 of the present embodiment may have a structure in which the guide protrusion 21 is formed on the outer surface of the main body 2 on the opposite side in the radial direction of the friction portion 3, as in the eighth embodiment. Is. Thereby, when the main body 2 is gripped during friction, the guide projection 21 is sandwiched by fingers, or a finger is placed on the guide projection 21, so that the circumferential direction of the convex portion 4 (friction portion 3) is reduced. The orientation can be easily identified, and the friction work can be started quickly.

本実施の形態の摩擦具1及び熱変色性筆記具11は、摩擦部3の径方向反対側の透明材料部分を通して摩擦部3を視認した際、摩擦部3の頂部41の外径(周方向の幅)が、摩擦部4の相互間の透明材料部分の軸方向外端部の間隔(周方向の幅)より小さく形成される。それにより、摩擦部3の相互間の透明材料部分を通して凸部4の頂部41(摩擦部3)近傍を視認しやすくなる。 In the friction tool 1 and the thermochromic writing instrument 11 of the present embodiment, when the friction portion 3 is visually recognized through the transparent material portion on the radial opposite side of the friction portion 3, the outer diameter of the top portion 41 of the friction portion 3 (in the circumferential direction The width) is formed smaller than the interval (width in the circumferential direction) between the axially outer ends of the transparent material portions between the friction portions 4. This makes it easier to visually recognize the vicinity of the top portion 41 (friction portion 3) of the convex portion 4 through the transparent material portion between the friction portions 3.

<第10の実施の形態>
本発明の第10の実施の形態の摩擦具1及び熱変色性筆記具11を図25乃至図26に示す。本実施の形態は、第9の実施の形態の変形例であり、第9の実施の形態と異なる点は、
本体2の端部の取付凹部22が径方向に貫通せず径方向外方の開口される点であり、他の構成及び効果は第10の実施の実施の形態と共通であるため、説明を省略する。
<Tenth Embodiment>
The friction tool 1 and the thermochromic writing instrument 11 according to the tenth embodiment of the present invention are shown in FIGS. 25 to 26. The present embodiment is a modification of the ninth embodiment, and is different from the ninth embodiment in that
The mounting recess 22 at the end of the main body 2 does not pass through in the radial direction and is opened outward in the radial direction. Since other configurations and effects are the same as those of the tenth embodiment, a description thereof will be given. Omit it.

<第11の実施の形態>
本発明の第11の実施の形態の摩擦具1及び熱変色性筆記具11を図27乃至図28に示す。本実施の形態は、第9及び第10の実施の形態の変形例であり、第9及び第10の実施の形態と異なる点は、本体2の端部の中央凹部が存在せず、本体2端部が透明材料からなる中実体(円柱体)よりなり、透視部7が本体2端部の透明材料部分よりなる点、及び、摩擦部3の頂部の径方向外縁部が、本体2端部の径方向外面より径方向外方に突出される点であり、他の構成及び効果は第9及び第10の実施の実施の形態と共通であるため、説明を省略する。
<Eleventh Embodiment>
27 to 28 show a friction tool 1 and a thermochromic writing instrument 11 according to an eleventh embodiment of the present invention. The present embodiment is a modification of the ninth and tenth embodiments, and is different from the ninth and tenth embodiments in that there is no central recess at the end of the main body 2 and The end is made of a solid body (cylindrical body) made of a transparent material, the transparent portion 7 is made of a transparent material portion at the end of the main body 2, and the radial outer edge of the top of the friction portion 3 is at the end of the main body 2. Since it is projected radially outward from the outer surface in the radial direction, other configurations and effects are the same as those in the ninth and tenth embodiments, the description thereof will be omitted.

1 摩擦具
11 熱変色性筆記具
2 本体(軸筒、キャップ)
21 ガイド突起
22 取付凹部
3 摩擦部
4 凸部
41 頂部
42 側部
43 支持部
5 凹部
51 周縁凹部
52 中央凹部
6 基部
7 透視部
1 Friction Tool 11 Thermochromic Writing Tool 2 Main Body (Shaft Tube, Cap)
21 guide projections 22 mounting recesses 3 friction parts 4 projections 41 tops 42 side parts 43 support parts 5 recesses 51 peripheral recesses 52 central recesses 6 bases 7 see-through parts

Claims (13)

熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部を本体の端部に備えた摩擦具であって、
前記本体の端部周縁部に軸方向外方に突出する非環状の凸部が形成され、前記凸部が前記摩擦部となり、前記凸部を除く前記本体の端部の軸方向外面に、径方向外方に開口され且つ軸方向外方に開口される凹部が形成され、摩擦時に前記凹部を通して前記凸部が視認可能に構成されることを特徴とする摩擦具。
A friction tool comprising a friction portion at the end of the main body, which rubs a thermochromic handwriting and causes a heat discoloration of the handwriting due to frictional heat generated at that time.
A non-annular convex portion that protrudes outward in the axial direction is formed on the peripheral portion of the end portion of the main body, the convex portion serves as the friction portion, and the axial outer surface of the end portion of the main body excluding the convex portion has a diameter. A friction tool, characterized in that a concave portion is formed that is open outward in the direction and outward in the axial direction, and the convex portion is visible through the concave portion during friction.
前記凸部が、前記本体の端部周縁部に間隔を置いて複数、配置される請求項1に記載の摩擦具。 The friction tool according to claim 1, wherein a plurality of the convex portions are arranged at a peripheral edge portion of the main body at intervals. 前記凸部が弾性材料により形成され、前記凸部が径方向の可撓性を有する請求項1または2に記載の摩擦具。 The friction tool according to claim 1, wherein the convex portion is formed of an elastic material, and the convex portion has flexibility in a radial direction. 前記凸部の頂部の径方向外面に弾性材料よりなる摩擦部が設けられる請求項1乃至3の何れかに記載の摩擦具。 The friction tool according to any one of claims 1 to 3, wherein a friction portion made of an elastic material is provided on a radially outer surface of a top portion of the convex portion. 前記凸部が、支持部と、該支持部の径方向外面に設けられ且つ該支持部と別材料からなる弾性材料よりなる摩擦部とからなる請求項1乃至4の何れかに記載の摩擦具。 The friction tool according to any one of claims 1 to 4, wherein the convex portion includes a support portion and a friction portion provided on a radially outer surface of the support portion and made of an elastic material different from the support portion. .. 前記凸部の径方向の反対側の前記本体外面にガイド突起が形成される請求項1乃至5の何れかに記載の摩擦具。 The friction tool according to claim 1, wherein a guide protrusion is formed on the outer surface of the main body on the opposite side in the radial direction of the convex portion. 熱変色性の筆跡を摩擦しその際に生じる摩擦熱により該筆跡を熱変色させる摩擦部を本体の端部に備えた摩擦具であって、
前記本体の端部周縁部の外面に非環状の摩擦部を備え、前記摩擦部を除く前記本体の端部に、前記摩擦部の径方向内面が透視可能な透視部が設けられることを特徴とする摩擦具。
A friction tool comprising a friction portion at the end of the main body, which rubs a thermochromic handwriting and causes a heat discoloration of the handwriting due to frictional heat generated at that time.
A non-annular friction portion is provided on the outer surface of the peripheral edge portion of the main body, and a transparent portion through which the radial inner surface of the friction portion can be seen is provided at the end portion of the main body excluding the friction portion. Friction tool to do.
前記摩擦部が、前記本体の端部周縁部に間隔を置いて複数、設けられ、前記各々の摩擦部の相互間に前記透視部が形成される請求項7に記載の摩擦具。 The friction tool according to claim 7, wherein a plurality of the friction portions are provided at intervals on an edge peripheral portion of the main body, and the see-through portion is formed between the respective friction portions. 前記透視部が透明材料により形成される請求項7または8に記載の摩擦具。 The friction tool according to claim 7, wherein the see-through portion is made of a transparent material. 前記摩擦部が、前記本体の端部周縁部に軸方向外方に突出する凸部の外面に形成され、前記凸部を除く本体の端部の軸方向外面に、径方向に開口され且つ軸方向外方に開口される凹部が形成され、前記凹部が少なくとも前記透視部の一部を構成する請求項7乃至9に記載の摩擦具。 The friction portion is formed on an outer surface of a convex portion that protrudes outward in the axial direction at a peripheral edge portion of the main body, and is radially opened on an axial outer surface of the end portion of the main body excluding the convex portion, and The friction tool according to claim 7, wherein a concave portion that is opened outward in the direction is formed, and the concave portion constitutes at least a part of the see-through portion. 前記摩擦部の径方向の反対側の前記本体外面にガイド突起が形成される請求項7乃至10の何れかに記載の摩擦具。 The friction tool according to claim 7, wherein a guide protrusion is formed on the outer surface of the main body on the side opposite to the radial direction of the friction portion. 熱変色性インキが内蔵され且つ該熱変色性インキが吐出可能なペン先を有する軸筒を備えた熱変色性筆記具であって、
前記軸筒が前記請求項1乃至11の何れかに記載の摩擦具であることを特徴とする熱変色性筆記具。
A thermochromic writing instrument comprising a barrel having a thermochromic ink built therein and having a pen tip capable of discharging the thermochromic ink,
A thermochromic writing instrument, wherein the barrel is the friction instrument according to any one of claims 1 to 11.
熱変色性インキが内蔵され且つ該熱変色性インキが吐出可能なペン先を有する軸筒と、該軸筒のペン先側に着脱自在に装着されるキャップとを備えた熱変色性筆記具であって、
前記キャップが前記請求項1乃至11の何れかに記載の摩擦具であることを特徴とする熱変色性筆記具。
A thermochromic writing instrument comprising a barrel having a pen tip capable of discharging the thermochromic ink and having a pen tip capable of ejecting the thermochromic ink, and a cap detachably attached to the pen tip side of the barrel. hand,
A thermochromic writing instrument, wherein the cap is the friction instrument according to any one of claims 1 to 11.
JP2019235530A 2018-12-27 2019-12-26 Friction tools and thermochromic writing tools Active JP7391471B2 (en)

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