JP6713561B2 - Thermochromic writing instruments and friction instruments - Google Patents

Thermochromic writing instruments and friction instruments Download PDF

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JP6713561B2
JP6713561B2 JP2019017736A JP2019017736A JP6713561B2 JP 6713561 B2 JP6713561 B2 JP 6713561B2 JP 2019017736 A JP2019017736 A JP 2019017736A JP 2019017736 A JP2019017736 A JP 2019017736A JP 6713561 B2 JP6713561 B2 JP 6713561B2
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friction
main body
protective member
friction body
screw portion
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JP2019064279A (en
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大屋　誠
誠 大屋
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Pilot Ink Co Ltd
Pilot Corp
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Pilot Ink Co Ltd
Pilot Corp
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Description

本発明は、熱変色性インキを内蔵し、一端に、前記熱変色性インキの筆跡を摩擦しその際に生じる摩擦熱で該筆跡を熱変色可能な摩擦体を備えた熱変色性筆記具、及び熱変色性インキの像または筆跡を摩擦しその際に生じる摩擦熱で該像または筆跡を熱変色可能な低摩耗性の弾性材料からなる摩擦体を備えた摩擦具に関する。 The present invention provides a thermochromic writing instrument having a thermochromic ink built-in, at one end of which a rubbing body that rubs the handwriting of the thermochromic ink and is capable of thermochromically changing the handwriting by frictional heat generated at that time, and The present invention relates to a friction tool provided with a friction body made of a low-wear elastic material capable of rubbing an image or handwriting of thermochromic ink and thermally discoloring the image or handwriting by frictional heat generated at that time.

従来、熱変色性筆記具において、軸胴の後端やキャップの頂部に摩擦体を設ける構成が開示されている。（例えば、特許文献１）。 Conventionally, a thermochromic writing instrument has been disclosed in which a friction body is provided at the rear end of the barrel or the top of the cap. (For example, patent document 1).

特開２００７−２２３３０２号公報JP, 2007-223302, A

前記特許文献１の熱変色性筆記具は、摩擦体が常に外部に露出している。そのため、非使用時、ユーザーの指先が摩擦体に接触したり、あるいは熱変色性筆記具を収納体（例えば、ペンケース、ペン立て、または衣服のポケット等）に収納して保管した際に該収納体の内面（例えば、ペンケースの内面、ペン立ての底面、または衣服のポケット内面等）と摩擦体とが接触することにより、摩擦体表面に手垢や埃等が付着し、摩擦体表面が汚れ、さらにその汚れた状態の摩擦体を用いて紙面を摩擦すると、紙面が汚れる不具合があった。 In the thermochromic writing instrument of Patent Document 1, the friction body is always exposed to the outside. Therefore, when not in use, the user's fingertips come into contact with the friction body, or the thermochromic writing implement is stored when stored in a storage body (for example, a pen case, a pen stand, or a pocket of clothes). When the inner surface of the body (for example, the inner surface of the pen case, the bottom surface of the pen stand, or the inner surface of the pocket of clothes) contacts the friction body, dirt or dust adheres to the surface of the friction body and the surface of the friction body becomes dirty. Further, when the surface of the paper is rubbed with the dirty friction body, the surface of the paper becomes dirty.

本発明は前記従来の問題点を解決するものであって、非使用時に摩擦体が汚れることを防止できる熱変色性筆記具及び摩擦具を提供しようとするものである。 The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a thermochromic writing instrument and a friction instrument capable of preventing the friction body from being soiled when not in use.

本願の第１の発明は、筒状の本体２の端部に、熱変色性インキの筆跡を摩擦しその際に生じる摩擦熱で該筆跡を熱変色可能な低摩耗性の弾性材料からなる摩擦体３を備え、内部に熱変色性インキを収容した熱変色性筆記具であって、前記本体２の摩擦体３側の端部の外周面に螺合可能な筒状の保護部材４を備え、前記本体２の端部の外周面にオネジ部２１を形成し、前記保護部材４の内周面に前記オネジ部２１に螺合可能なメネジ部４１を形成し、前記保護部材４を前記本体２に対して回転させることにより、前記保護部材４の内側から前記摩擦体３を出没可能に構成したことを要件とする。 1st invention of this application WHEREIN: The friction which consists of a low abrasion elastic material which can rub the handwriting of thermochromic ink to the edge part of the cylindrical main body 2, and can thermally discolor the handwriting by the frictional heat produced at that time. A thermochromic writing instrument including a body 3 and containing a thermochromic ink therein, comprising a tubular protective member 4 that can be screwed onto an outer peripheral surface of an end portion of the main body 2 on the friction body 3 side, A male screw portion 21 is formed on the outer peripheral surface of the end portion of the main body 2, and a female screw portion 41 that can be screwed into the male screw portion 21 is formed on the inner peripheral surface of the protective member 4 to secure the protective member 4 to the main body 2 It is a requirement that the friction body 3 can be retracted from the inside of the protective member 4 by rotating the friction member 3 with respect to the inside.

前記第１の発明の熱変色性筆記具１は、前記本体２の摩擦体３側の端部の外周面に螺合可能な筒状の保護部材４を備え、前記本体２の端部の外周面にオネジ部２１を形成し、前記保護部材４の内周面に前記オネジ部２１に螺合可能なメネジ部４１を形成し、前記保護部材４を前記本体２に対して回転させることにより、前記保護部材４の内側から前記摩擦体３を出没可能に構成したことにより、簡易な構造で、非使用時の摩擦体３の汚れを防止できる。なお、前記本体２とは、例えば、内部に熱変色性インキが収容され且つ一端にペン先を備えた軸筒、または、前記軸筒のペン先側に着脱可能なキャップが挙げられる。 The thermochromic writing instrument 1 of the first invention includes a cylindrical protective member 4 that can be screwed onto the outer peripheral surface of the end of the main body 2 on the side of the friction body 3, and the outer peripheral surface of the end of the main body 2. A male screw portion 21 is formed on the inner peripheral surface of the protective member 4, and a female screw portion 41 that can be screwed into the male screw portion 21 is formed on the inner peripheral surface of the protective member 4, and the protective member 4 is rotated with respect to the main body 2. Since the friction body 3 can be retracted from the inside of the protection member 4, the friction body 3 can be prevented from being soiled when not in use with a simple structure. The main body 2 may be, for example, a barrel containing thermochromic ink inside and a pen tip at one end, or a removable cap on the pen tip side of the barrel.

本願の第２の発明は、前記第１の発明の熱変色性筆記具１において、摩擦体非使用時、前記保護部材４が前記摩擦体３外周を包囲し且つ前記保護部材４の頂部が前記摩擦体３の頂部より外方に位置し、摩擦体使用時、前記摩擦体３の頂部が前記保護部材４の頂部より外方に位置することを要件とする。 A second invention of the present application is the thermochromic writing instrument 1 of the first invention, wherein when the friction body is not used, the protection member 4 surrounds the outer periphery of the friction body 3 and the top of the protection member 4 has the friction. It is required to be located outside the top of the body 3 and when using the friction body, the top of the friction body 3 be located outside the top of the protection member 4.

前記第２の発明の熱変色性筆記具１は、摩擦体非使用時、前記保護部材４が前記摩擦体３外周を包囲し且つ前記保護部材４の頂部が前記摩擦体３の頂部より外方（即ち摩擦体突出方向外方）に位置し、摩擦体使用時、前記摩擦体３の頂部が前記保護部材４の頂部より外方（即ち摩擦体突出方向外方）に位置することにより、摩擦体使用時は保護部材４が本体２に取り付けられているため保護部材４の紛失を防止できる。 In the thermochromic writing instrument 1 of the second invention, when the friction body is not used, the protection member 4 surrounds the outer periphery of the friction body 3 and the top of the protection member 4 is located outside the top of the friction body 3 ( That is, when the friction body is used, the top of the friction body 3 is located outside the top of the protection member 4 (that is, in the friction body protrusion direction) when the friction body is used. Since the protective member 4 is attached to the main body 2 during use, the protective member 4 can be prevented from being lost.

本願の第３の発明は、本体２の端部に、熱変色性インキの像または筆跡を摩擦しその際に生じる摩擦熱で該像または筆跡を熱変色可能な低摩耗性の弾性材料からなる摩擦体３を備えた摩擦具であって、前記本体２の摩擦体側の端部の外周面に螺合可能な筒状の保護部材４を備え、前記本体２の端部の外周面にオネジ部２１を形成し、前記保護部材４の内周面に前記オネジ部２１に螺合可能なメネジ部４１を形成し、前記保護部材４を前記本体２に対して回転させることにより、前記保護部材４の内側から前記摩擦体３を出没可能に構成したことを要件とする。 A third invention of the present application is made of a low-wear elastic material capable of rubbing an image or handwriting of thermochromic ink on the end of the main body 2 and thermally discoloring the image or handwriting by frictional heat generated at that time. A friction tool including a friction body (3), comprising a tubular protective member (4) that can be screwed onto the outer peripheral surface of the friction body side end of the main body (2), and a male thread portion on the outer peripheral surface of the end of the main body (2). 21 is formed, a female screw portion 41 that can be screwed into the male screw portion 21 is formed on the inner peripheral surface of the protective member 4, and the protective member 4 is rotated with respect to the main body 2 to form the protective member 4 The requirement is that the friction body 3 can be projected and retracted from the inside.

前記第３の発明の摩擦具１は、前記本体２の摩擦体側の端部の外周面に螺合可能な筒状の保護部材４を備え、前記本体２の端部の外周面にオネジ部２１を形成し、前記保護部材４の内周面に前記オネジ部２１に螺合可能なメネジ部４１を形成し、前記保護部材４を前記本体２に対して回転させることにより、前記保護部材４の内側から前記摩擦体３を出没可能に構成したことにより、簡易な構造で、非使用時の摩擦体３の汚れを防止できる。尚、本発明の摩擦具１の本体は、内部に熱変色性インキを内蔵せず、一端にペン先を備えない。 The friction tool 1 according to the third aspect of the present invention includes a cylindrical protective member 4 that can be screwed onto the outer peripheral surface of the end of the main body 2 on the friction body side, and the external thread 21 is formed on the outer peripheral surface of the end of the main body 2. By forming a female screw portion 41 that can be screwed into the male screw portion 21 on the inner peripheral surface of the protective member 4 and rotating the protective member 4 with respect to the main body 2. Since the friction body 3 can be projected and retracted from the inside, the friction body 3 can be prevented from being soiled when not in use with a simple structure. The main body of the friction tool 1 of the present invention has no thermochromic ink built therein and has no pen tip at one end.

本願の第４の発明は、前記第３の発明の摩擦具において、摩擦体非使用時、前記保護部材４が前記摩擦体３外周を包囲し且つ前記保護部材４の頂部が前記摩擦体３の頂部より外方に位置し、摩擦体使用時、前記摩擦体３の頂部が前記保護部材４の頂部より外方に位置することを要件とする。 A fourth invention of the present application is the friction tool according to the third invention, wherein when the friction body is not used, the protection member 4 surrounds the outer periphery of the friction body 3 and the top of the protection member 4 is the friction body 3. It is required to be located outside the top, and when using the friction body, the top of the friction body 3 is located outside the top of the protection member 4.

前記第４の発明の摩擦具１は、摩擦体非使用時、前記保護部材４が前記摩擦体３外周を包囲し且つ前記保護部材４の頂部が前記摩擦体３の頂部より外方（即ち摩擦体突出方向外方）に位置し、摩擦体使用時、前記摩擦体３の頂部が前記保護部材４の頂部より外方（即ち摩擦体突出方向外方）に位置することにより、摩擦体使用時は保護部材４が本体２に取り付けられているため保護部材４の紛失を防止できる。 In the friction tool 1 according to the fourth aspect of the present invention, when the friction body is not used, the protection member 4 surrounds the outer periphery of the friction body 3 and the top of the protection member 4 is located outside the top of the friction body 3 (that is, when the friction body is not in friction). When the friction body is used, when the friction body is used, the top of the friction body 3 is located outside the top of the protection member 4 (that is, the friction body is projected outward). Since the protective member 4 is attached to the main body 2, loss of the protective member 4 can be prevented.

本発明において、前記摩擦体３を構成する弾性材料は、弾性を有する合成樹脂（ゴム、エラストマー）が好ましく、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−ブチレン−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、エチレンプロピレンジエンゴム（ＥＰＤＭ）等が挙げられる。前記摩擦体３を構成する弾性を有する合成樹脂は、高摩耗性の弾性材料（例えば、消しゴム等）ではなく、摩擦時に摩耗カス（消しカス）が殆ど生じない低摩耗性の弾性材料である。本発明において、前記保護部材４は、合成樹脂（例えば、ポリカーボネイト、ポリエチレン、ポリプロピレン、ポリアセタール、ＡＢＳ樹脂等）または金属から構成されることが好ましい。また、前記本体２は、合成樹脂（例えば、ポリカーボネイト、ポリエチレン、ポリプロピレン、ポリアセタール、ＡＢＳ樹脂等）または金属から構成されることが好ましい。 In the present invention, the elastic material forming the friction body 3 is preferably an elastic synthetic resin (rubber, elastomer), such as silicone resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin (styrene). -Ethylene-butylene-styrene copolymer), fluorocarbon resin, chloroprene resin, nitrile resin, polyester resin, ethylene propylene diene rubber (EPDM) and the like. The elastic synthetic resin forming the friction body 3 is not a highly wear-resistant elastic material (for example, an eraser or the like), but a low-wearing elastic material that hardly causes wear debris (erasing debris) during friction. In the present invention, the protective member 4 is preferably made of synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.) or metal. The body 2 is preferably made of synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.) or metal.

本発明の熱変色性筆記具は、非使用時に摩擦体が汚れることを防止できる。 The thermochromic writing instrument of the present invention can prevent the friction body from becoming dirty when not in use.

本発明の摩擦具は、非使用時に摩擦体が汚れることを防止できる。
The friction tool of the present invention can prevent the friction body from becoming dirty when not in use.

本発明の実施の形態の摩擦体使用時の要部縦断面図である。FIG. 4 is a longitudinal sectional view of a main part when the friction body according to the embodiment of the present invention is used. 図１の摩擦体非使用時の要部縦断面図である。FIG. 2 is a longitudinal sectional view of a main part when the friction body of FIG. 1 is not used.

図１及び図２の本発明の実施の形態の熱変色性筆記具１及び摩擦具１を示す。
筒状の本体２の一端に、低摩耗性の弾性材料（例えば、シリコーン樹脂、ＳＢＳ樹脂、ＳＥＢＳ樹脂）からなる摩擦体３が設けられる。前記摩擦体３の頂部または頂部周縁には、凸曲面を備える。 1 and 2 show a thermochromic writing instrument 1 and a friction instrument 1 according to an embodiment of the present invention.
A friction body 3 made of a low-wear elastic material (for example, silicone resin, SBS resin, SEBS resin) is provided at one end of the cylindrical main body 2. A convex curved surface is provided on the top or the peripheral edge of the friction body 3.

前記本体２の摩擦体３側の外周面に、筒状の保護部材４が螺合される。前記本体２は、合成樹脂または金属により形成される。 A cylindrical protective member 4 is screwed onto the outer peripheral surface of the main body 2 on the side of the friction body 3. The body 2 is made of synthetic resin or metal.

熱変色性筆記具１の場合、前記本体２は、例えば、内部に熱変色性インキが収容され且つ該熱変色性インキが吐出可能なペン先を一端に備えた軸筒、または、前記軸筒のペン先側に着脱自在のキャップが挙げられる。前記本体２が軸筒の場合、軸筒の反ペン先側の端部に摩擦体３が設けられる。前記本体２がキャップの場合、キャップの閉鎖側端部に摩擦体３が設けられる。また、摩擦具１の場合、本体２の内部には熱変色性インキが収容されず、本体２の一端にペン先を備えない。 In the case of the thermochromic writing instrument 1, the main body 2 may be, for example, a barrel having a thermochromic ink housed therein and having a pen tip capable of discharging the thermochromic ink at one end, or a barrel of the barrel. There is a removable cap on the pen tip side. When the main body 2 is a barrel, the friction body 3 is provided at the end of the barrel opposite to the pen tip. When the main body 2 is a cap, a friction body 3 is provided at the closed end of the cap. Further, in the case of the friction tool 1, the thermochromic ink is not accommodated inside the main body 2, and the pen tip is not provided at one end of the main body 2.

前記本体２の摩擦体３側の外周面には、オネジ部２１が形成される。前記オネジ部２１の後方には、段部２２が形成される。摩擦体使用時、前記段部２２に保護部材４の端部が当接され、摩擦体使用時の摩擦体３の突出状態を一定に維持できる（図１）。前記本体２のオネジ部２１の外径は、摩擦体３の外部に突出する部分の外径より大きく形成される。前記保護部材４の長手寸法は、摩擦体３の突出長さより長く設定される。 A male thread portion 21 is formed on the outer peripheral surface of the main body 2 on the side of the friction body 3. A step portion 22 is formed behind the male screw portion 21. When the friction body is used, the end of the protection member 4 is brought into contact with the step portion 22, so that the protruding state of the friction body 3 when the friction body is used can be maintained constant (FIG. 1). The outer diameter of the male thread portion 21 of the main body 2 is formed to be larger than the outer diameter of the portion of the friction body 3 that projects to the outside. The longitudinal dimension of the protective member 4 is set longer than the protruding length of the friction body 3.

また、図示はしないが、前記本体２と前記保護部材４との間に、摩擦体非使用時（即ち保護部材４が前記摩擦体３外周を包囲し且つ保護部材４の頂部が摩擦体３の頂部より外方に位置した状態のとき）にオネジ部２１とメネジ部４１との回転または保護部材４と本体２との長手方向の移動を阻止するとともに一時的に本体２と保護部材４が係止する係止部を設けることが好ましい。それにより、摩擦体非使用時、本体２からの保護部材４の脱落を確実に防止するとともに、保護部材４が不用意に回転して、摩擦体３の頂部が保護部材４の頂部より外方に突出することを回避できる。 Although not shown, when the friction body is not used (that is, the protection member 4 surrounds the outer circumference of the friction body 3 and the top of the protection member 4 is between the main body 2 and the protection member 4). (When located outside the top), the male screw portion 21 and the female screw portion 41 are prevented from rotating or the protective member 4 and the main body 2 are prevented from moving in the longitudinal direction, and the main body 2 and the protective member 4 are temporarily engaged. It is preferable to provide a locking portion for stopping. As a result, when the friction body is not used, the protection member 4 is surely prevented from falling off the main body 2, and the protection member 4 rotates carelessly so that the top of the friction body 3 is located outside the top of the protection member 4. It is possible to avoid the protrusion.

前記保護部材４は、合成樹脂または金属により形成される。前記保護部材４は、両端が開口した筒体であり、その内面にメネジ部４１が形成される。前記メネジ部４１が前記本体２のオネジ部２１に螺合可能である。 The protection member 4 is made of synthetic resin or metal. The protection member 4 is a tubular body having open ends, and a female screw portion 41 is formed on the inner surface thereof. The female screw portion 41 can be screwed into the male screw portion 21 of the main body 2.

前記保護部材４の内径は、摩擦体３の外部に突出する部分の外径より大きく形成される。それにより、保護部材４の内部を、摩擦体３の外部に突出する部分が遊挿可能となる。前記保護部材４の外面の形状は、横断面円形状、横断面多角形状、横断面異形状等挙げられる。また、前記保護部材４の外面に、滑り止め用の凹凸部を形成することもできる。 The inner diameter of the protection member 4 is formed to be larger than the outer diameter of the portion of the friction body 3 that projects to the outside. As a result, the portion projecting to the outside of the friction body 3 can be loosely inserted inside the protective member 4. Examples of the shape of the outer surface of the protection member 4 include a circular cross section, a polygonal cross section, and an irregular cross section. In addition, it is possible to form an uneven portion for preventing slippage on the outer surface of the protection member 4.

本実施の形態の熱変色性筆記具１及び摩擦具１は、前記本体２の摩擦体３側の端部の外周面に螺合可能な筒状の保護部材４を備え、前記本体２の端部の外周面にオネジ部２１を形成し、前記保護部材４の内周面に前記オネジ部２１に螺合可能なメネジ部４１を形成し、前記保護部材４を前記本体２に対して回転させることにより、前記保護部材４の内側から前記摩擦体３を出没可能に構成したことにより、簡易な構造で、非使用時の摩擦体３の汚れを防止できる。 The thermochromic writing instrument 1 and the friction instrument 1 according to the present embodiment include a tubular protective member 4 that can be screwed onto the outer peripheral surface of the end of the main body 2 on the friction body 3 side. To form a male screw portion 21 on the outer peripheral surface of the protective member 4, and to form a female screw portion 41 that can be screwed onto the male screw portion 21 on the inner peripheral surface of the protective member 4, and rotate the protective member 4 with respect to the main body 2. Thus, the friction body 3 can be retracted from the inside of the protection member 4, so that the friction body 3 can be prevented from being soiled when not in use with a simple structure.

本実施の形態の熱変色性筆記具１及び摩擦具１は、摩擦体非使用時、前記保護部材４が前記摩擦体３外周を包囲し且つ前記保護部材４の頂部が前記摩擦体３の頂部より外方（即ち摩擦体突出方向外方）に位置し、摩擦体３使用時、前記摩擦体３の頂部が前記保護部材４の頂部より外方（即ち摩擦体突出方向外方）に位置することにより、摩擦体使用時は保護部材４が本体２に取り付けられているため保護部材４の紛失を防止できる。 In the thermochromic writing instrument 1 and the friction tool 1 according to the present embodiment, when the friction body is not used, the protection member 4 surrounds the outer periphery of the friction body 3 and the top of the protection member 4 is closer to the top of the friction body 3. It is located outside (that is, outside of the friction body projecting direction), and when the friction body 3 is used, the top of the friction body 3 is located outside of the top of the protection member 4 (that is, outside of the friction body projecting direction). Therefore, when the friction body is used, the protection member 4 is attached to the main body 2, so that the protection member 4 can be prevented from being lost.

１ 熱変色性筆記具及び摩擦具
２ 本体
２１ オネジ部
２２ 段部
３ 摩擦体
４ 保護部材
４１ メネジ部 DESCRIPTION OF SYMBOLS 1 Thermochromic writing instrument and rubbing tool 2 Main body 21 Male thread part 22 Step part 3 Friction body 4 Protective member 41 Female thread part

Claims (2)

筒状の本体の端部に、熱変色性インキの筆跡を摩擦しその際に生じる摩擦熱で該筆跡を熱変色可能な低摩耗性の弾性材料からなる摩擦体を備え、内部に熱変色性インキを収容した熱変色性筆記具であって、前記本体の摩擦体側の端部の外周面に螺合可能な筒状の保護部材を備え、前記本体の端部の外周面にオネジ部を形成し、前記保護部材の内周面に前記オネジ部に螺合可能なメネジ部を形成し、前記保護部材を前記本体に対して回転させることにより、前記保護部材を前記本体に対して長手方向に移動させ且つ前記保護部材の内側から前記摩擦体を出没可能に構成し、前記摩擦体は頂部または頂部周縁に凸曲面を備え、
摩擦体非使用時、前記保護部材が前記摩擦体外周を包囲し且つ前記保護部材の頂部が前記摩擦体の頂部より外方に位置し、摩擦体使用時、前記摩擦体の頂部が前記保護部材の頂部より外方に位置し、前記本体の端部と前記保護部材の頂部が面一となり、
前記本体と前記保護部材との間に、前記摩擦体非使用時に前記オネジ部と前記メネジ部との回転または前記保護部材と前記本体との長手方向の移動を阻止するとともに一時的に前記本体と前記保護部材が係止する係止部が設けられることを特徴とする熱変色性筆記具。 The end of the tubular body is equipped with a friction body made of a low-wearing elastic material that rubs the handwriting of the thermochromic ink and can discolor the handwriting by the frictional heat generated at that time. A thermochromic writing instrument containing ink, comprising a cylindrical protective member that can be screwed onto the outer peripheral surface of the friction body side end of the main body, and forming a male thread portion on the outer peripheral surface of the end of the main body. , A female screw portion that can be screwed into the male screw portion is formed on the inner peripheral surface of the protective member, and the protective member is moved in the longitudinal direction with respect to the main body by rotating the protective member with respect to the main body. And, the friction body is configured to be retractable from the inside of the protection member, and the friction body is provided with a convex curved surface at the top or the periphery of the top,
When the friction body is not used, the protection member surrounds the outer periphery of the friction body and the top of the protection member is located outside the top of the friction body. When the friction body is used, the top of the friction body is the protection member. Located outside the top of, the end of the body and the top of the protective member are flush with each other,
Between the main body and the protective member, when the friction body is not used, rotation of the male screw portion and the female screw portion or movement of the protective member and the main body in the longitudinal direction is prevented and the main body is temporarily A thermochromic writing instrument, wherein a locking portion for locking the protective member is provided. 本体の端部に、熱変色性インキの像または筆跡を摩擦しその際に生じる摩擦熱で該像または筆跡を熱変色可能な低摩耗性の弾性材料からなる摩擦体を備えた摩擦具であって、前記本体の摩擦体側の端部の外周面に螺合可能な筒状の保護部材を備え、前記本体の端部の外周面にオネジ部を形成し、前記保護部材の内周面に前記オネジ部に螺合可能なメネジ部を形成し、前記保護部材を前記本体に対して回転させることにより、前記保護部材を前記本体に対して長手方向に移動させ且つ前記保護部材の内側から前記摩擦体を出没可能に構成し、前記摩擦体は頂部または頂部周縁に凸曲面を備え、
摩擦体非使用時、前記保護部材が前記摩擦体外周を包囲し且つ前記保護部材の頂部が前記摩擦体の頂部より外方に位置し、摩擦体使用時、前記摩擦体の頂部が前記保護部材の頂部より外方に位置し、前記本体の端部と前記保護部材の頂部が面一となり、
前記本体と前記保護部材との間に、前記摩擦体非使用時に前記オネジ部と前記メネジ部との回転または前記保護部材と前記本体との長手方向の移動を阻止するとともに一時的に前記本体と前記保護部材が係止する係止部が設けられることを特徴とする摩擦具。 A friction tool comprising an end portion of a main body and a friction body made of a low-wear elastic material capable of rubbing an image or handwriting of thermochromic ink and thermally discoloring the image or handwriting by frictional heat generated at that time. A cylindrical protective member that can be screwed onto the outer peripheral surface of the friction body side end of the main body, and a male screw portion is formed on the outer peripheral surface of the end portion of the main body, and the inner peripheral surface of the protective member is By forming a female screw portion that can be screwed into the male screw portion and rotating the protective member with respect to the main body, the protective member is moved in the longitudinal direction with respect to the main body, and the friction is applied from the inside of the protective member. The body is configured to be retractable, and the friction body has a convex curved surface at the top or the periphery of the top,
When the friction body is not used, the protection member surrounds the outer periphery of the friction body and the top of the protection member is located outside the top of the friction body. When the friction body is used, the top of the friction body is the protection member. Located outside the top of, the end of the body and the top of the protective member are flush with each other,
Between the main body and the protective member, when the friction body is not used, rotation of the male screw portion and the female screw portion or movement of the protective member and the main body in the longitudinal direction is prevented and the main body is temporarily A friction tool comprising a locking portion for locking the protection member.
JP2019017736A 2012-12-28 2019-02-04 Thermochromic writing instruments and friction instruments Expired - Fee Related JP6713561B2 (en)

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