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、摩擦体の非使用時、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 the friction body is not in use, the user's fingertip touches the friction body, or the thermochromic writing instrument is stored in a storage body (for example, a pen case, a pen stand, or a clothes pocket). When the inner surface of the container (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) comes into contact with the friction body, dust or the like adheres to the surface of the friction body, and the friction body If the surface is soiled and the surface of the paper is rubbed with the soiled friction body, the surface of the paper is soiled.
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、摩擦体が汚れることを回避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 of the present invention is to provide a thermochromic writing instrument and a friction tool that can prevent the friction body from being soiled when not in use.
尚、本発明において、「前」とはペン先側を指し、「後」とはその反対側を指す。
In the present invention, "front" refers to the pen tip side, and "rear" refers to the opposite side.
本願の第１の発明は、熱変色性インキが吐出可能なペン先２１と、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低磨耗性の弾性材料からなる摩擦体３とを備えた熱変色性筆記具であって、摩擦体側に装着可能な保護部材４を着脱自在に備え、前記保護部材４を前記摩擦体側に装着した状態において、前記保護部材４の頂部が前記摩擦体３の頂部よりも外方に位置してなることを要件とする。
1st invention of this application WHEREIN: The pen tip 21 which can discharge thermochromic ink, and the low abrasion elasticity which can thermally discolor the handwriting by rubbing the handwriting of the said thermochromic ink, and the frictional heat produced at that time. A thermochromic writing instrument comprising a friction body 3 made of a material, the protective member 4 being detachably provided on the friction body side, and the protection member 4 being attached to the friction body side. The top of No. 4 is located outside the top of the friction body 3.
前記第１の発明の熱変色性筆記具１は、摩擦体側に装着可能な保護部材４を着脱自在に備え、前記保護部材４を前記摩擦体側に装着した状態において、前記保護部材４の頂部が前記摩擦体３の頂部よりも外方（即ち摩擦体突出方向外方）に位置してなることにより、摩擦体非使用時、ユーザーの指先との接触や、摩擦体３と収容体内面（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）との接触を回避でき、摩擦体３に手垢や埃等が付着すること（即ち摩擦体が汚れること）を防止できる。
The thermochromic writing instrument 1 of the first invention is detachably provided with a protective member 4 that can be mounted on the friction body side, and in the state where the protective member 4 is mounted on the friction body side, the top of the protective member 4 is Since the friction body 3 is located outside (that is, in the protruding direction of the friction body outward) of the top, the friction body 3 is in contact with the user's fingertip when not in use, or the friction body 3 and the inner surface of the housing (for example, It is possible to avoid contact with the inner surface of the pen case, the bottom surface of the pen stand, or the inner surface of the pocket of the clothes), and it is possible to prevent dirt, dust, etc. from adhering to the friction body 3 (that is, the friction body is contaminated).
前記第１の発明の熱変色性筆記具１において、前記保護部材４の取り付けは、例えば、摩擦体３に着脱自在に直接取り付ける構成や、摩擦体側の部材に着脱自在に取り付ける構成が挙げられる。前記第１の発明の熱変色性筆記具１において、前記保護部材４の形状は、筒状、板状、棒状、複数の突片状等、何れであってもよい。
In the thermochromic writing instrument 1 of the first invention, the protection member 4 can be attached to the friction body 3 by a detachable direct attachment or a friction body side member. In the thermochromic writing instrument 1 of the first invention, the shape of the protection member 4 may be any of a tubular shape, a plate shape, a rod shape, a plurality of protruding pieces, and the like.
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、前記保護部材４が筒状であり、前記保護部材４を前記摩擦体側に装着した状態において、前記保護部材４が前記摩擦体３の外周面を包囲してなることを要件とする。
2nd invention of this application WHEREIN: In the thermochromic writing instrument 1 of the said 1st invention, the said protection member 4 is cylindrical, and the said protection member 4 is the state mounted | worn with the said friction member side. It is required that the outer peripheral surface of the friction body 3 is surrounded.
前記第２の発明の熱変色性筆記具１は、摩擦体非使用時、ユーザーの指先や、摩擦体３と収容体内面（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）との接触を確実に回避でき、摩擦体３が汚れることを確実に防止できる。
The thermochromic writing instrument 1 according to the second aspect of the present invention is such that when the friction body is not used, the user's fingertip, the friction body 3 and the inner surface of the housing (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). It is possible to surely avoid contact with the friction body 3 and to prevent the friction body 3 from getting dirty.
本願の第３の発明は、前記第２の発明の熱変色性筆記具１において、前記保護部材４の内周面と前記摩擦体３の外周面とが着脱自在に直接嵌合してなることを要件とする。
A third invention of the present application is that in the thermochromic writing instrument 1 of the second invention, the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are detachably directly fitted to each other. As a requirement.
前記第３の発明の熱変色性筆記具１は、摩擦体非使用時、筒状の保護部材４の内周面と、低摩耗性の弾性材料からなる摩擦体３の外周面との安定した嵌合状態を維持でき、保護部材４が摩擦体３から不用意に脱落することを防止できる。前記摩擦体３の外周面には外側嵌合部が設けられ、前記保護部材４の内周面には、前記外側嵌合部と着脱自在に直接嵌合可能な内側嵌合部が設けられる。前記保護部材４の内周面と前記摩擦体３の外周面との嵌合は、例えば、圧入嵌合、凹凸嵌合、ネジ嵌合等が挙げられる。
In the thermochromic writing instrument 1 of the third invention, when the friction body is not used, the inner peripheral surface of the cylindrical protection member 4 and the outer peripheral surface of the friction body 3 made of a low-wear elastic material are stably fitted. The combined state can be maintained, and the protective member 4 can be prevented from being accidentally dropped from the friction body 3. An outer fitting portion is provided on the outer peripheral surface of the friction body 3, and an inner fitting portion that can be detachably directly fitted to the outer fitting portion is provided on the inner peripheral surface of the protection member 4. The fitting of the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 may be, for example, press fitting, concavo-convex fitting, screw fitting, or the like.
本願の第４の発明は、前記第３の発明の熱変色性筆記具１において、前記保護部材４の内周面と前記摩擦体３の外周面とが着脱自在に嵌合する際、前記保護部材４の内部と外部とを連通する通気手段を備えたことを要件とする。
A fourth invention of the present application is the thermochromic writing instrument 1 of the third invention, wherein when the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 are detachably fitted, the protective member It is a requirement that a ventilation means for communicating the inside and the outside of 4 is provided.
前記第４の発明の熱変色性筆記具１は、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、保護部材４の内部を加圧・減圧せず、保護部材４を摩擦体３にスムーズに着脱させることができる。
The thermochromic writing instrument 1 according to the fourth aspect of the present invention does not pressurize or depressurize the inside of the protective member 4 when the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 are attached or detached. 4 can be smoothly attached to and detached from the friction body 3.
本願の第５の発明は、前記第４の発明の熱変色性筆記具１において、前記保護部材４が、頂壁と該頂壁に連設される筒状の側壁とからなる有底筒状体であり、前記保護部材４の頂壁または側壁に、前記通気手段としての通気孔４２を設けたことを要件とする。
A fifth invention of the present application is the thermochromic writing instrument 1 of the fourth invention, wherein the protective member 4 is a bottomed tubular body including a top wall and a tubular side wall continuous with the top wall. It is a requirement that the top wall or the side wall of the protection member 4 be provided with a ventilation hole 42 as the ventilation means.
前記第５の発明の熱変色性筆記具１は、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、前記通気孔４２により、保護部材４の内部と外部とを確実に連通させることができる。
In the thermochromic writing instrument 1 of the fifth invention, when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the ventilation hole 42 separates the inside and the outside of the protection member 4. It can be surely communicated.
本願の第６の発明は、前記第４の発明の熱変色性筆記具１において、前記保護部材４が、頂壁と該頂壁に連設される筒状の側壁とからなる有底筒状体であり、前記保護部材４の側壁の内周面と前記摩擦体３の外周面との間に、前記通気手段としての通気路を設けたことを要件とする。
A sixth invention of the present application is the thermochromic writing instrument 1 of the fourth invention, wherein the protective member 4 is a bottomed tubular body including a top wall and a tubular side wall continuous with the top wall. It is a requirement that a ventilation passage as the ventilation means be provided between the inner peripheral surface of the side wall of the protection member 4 and the outer peripheral surface of the friction body 3.
前記第６の発明の熱変色性筆記具１は、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、前記通気路により、保護部材４の内部と外部とを確実に連通させることができる。また、前記第６の発明の熱変色性筆記具１は、摩擦体非使用時、通気手段を備えたにもかかわらず、摩擦体３を、頂壁や側壁に通気孔を備えない有底筒状体の保護部材４で覆うことができ、保護部材４の内部に塵や埃の侵入を防ぎ、より一層、摩擦体３の汚れを回避できる。
In the thermochromic writing instrument 1 of the sixth invention, when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the ventilation passage ensures the inside and the outside of the protection member 4. Can be connected to. Further, in the thermochromic writing instrument 1 of the sixth invention, when the friction body is not used, the friction body 3 is provided with the ventilation means, but the friction body 3 has the bottomed cylindrical shape without ventilation holes in the top wall or the side wall. The body can be covered with the protective member 4, dust and dirt can be prevented from entering the inside of the protective member 4, and dirt on the friction body 3 can be further avoided.
本願の第７の発明は、前記第１乃至第６の発明の熱変色性筆記具１において、軸筒２の内部に熱変色性インキを収容し、前記軸筒２の前端に前記熱変色性インキが吐出可能なペン先２１を設け、前記軸筒２の後端に前記摩擦体３を設けたことを要件とする。
A seventh invention of the present application is the thermochromic writing instrument 1 of the first to sixth inventions, wherein the thermochromic ink is housed inside the barrel 2, and the thermochromic ink is provided at the front end of the barrel 2. Is provided, and the friction body 3 is provided at the rear end of the barrel 2.
前記第７の発明の熱変色性筆記具１は、軸筒２の後端に摩擦体３を備えるため、摩擦体３を保護部材４で保護した状態でペン先２１を用いて筆記することができ、摩擦体３の使用時のみ、保護部材４を摩擦体３から取り外して使用でき、非使用時の摩擦体３の汚れをできる限り回避できる。
Since the thermochromic writing instrument 1 of the seventh invention has the friction body 3 at the rear end of the barrel 2, it can be written using the pen tip 21 while the friction body 3 is protected by the protection member 4. The protective member 4 can be removed from the friction body 3 and used only when the friction body 3 is used, and contamination of the friction body 3 when not in use can be avoided as much as possible.
本願の第８の発明は、前記第７の発明の熱変色性筆記具１において、前記軸筒２内に筆記体を前後方向に移動可能に収容し、前記筆記体の内部に熱変色性インキを収容し、前記筆記体の前端に前記熱変色性インキが吐出可能なペン先２１を設け、前記軸筒２に操作部２２を設け、前記操作部２２を操作することにより前記筆記体のペン先２１を軸筒２の前端孔から出没可能に構成したことを要件とする。
An eighth invention of the present application is the thermochromic writing instrument 1 of the seventh invention, wherein the cursive body is housed in the barrel 2 so as to be movable in the front-rear direction, and the thermochromic ink is contained inside the cursive body. The pen tip 21 of the cursive body is accommodated and provided with a pen tip 21 capable of ejecting the thermochromic ink at the front end of the cursive body, an operating section 22 is provided on the barrel 2, and the pen point of the cursive body is operated by operating the operating section 22. The requirement is that 21 can be retracted from the front end hole of the barrel 2.
前記第８の発明の熱変色性筆記具１は、非使用時の摩擦体３の汚れをできる限り回避できる出没式の熱変色性筆記具１が得られる。
The thermochromic writing instrument 1 according to the eighth aspect of the present invention can be a retractable thermochromic writing instrument 1 that can prevent dirt on the friction body 3 when not in use as much as possible.
本願の第９の発明は、前記第７の発明の熱変色性筆記具１において、前記軸筒２の前部外面及び後部外面に着脱自在に装着されるキャップ５を備え、前記キャップ５内面に、前記キャップ５内面と前記軸筒２後部外面とが嵌合する後ろ差し嵌合部５１を設け、前記キャップ５内面の後ろ差し嵌合部５１の内径を前記保護部材４の外径より大きく形成したことを要件とする。
A ninth invention of the present application is the thermochromic writing instrument 1 of the seventh invention, comprising a cap 5 detachably attached to a front outer surface and a rear outer surface of the barrel 2, and an inner surface of the cap 5, A rear insertion fitting portion 51 in which the inner surface of the cap 5 and the outer surface of the rear portion of the barrel 2 are fitted is provided, and the inner diameter of the rear insertion fitting portion 51 of the inner surface of the cap 5 is formed larger than the outer diameter of the protection member 4. It is a requirement.
前記第９の発明の熱変色性筆記具１は、前記キャップ５の後ろ差し嵌合部５１の内径を前記保護部材４の外径より大きく形成したことにより、キャップ５を軸筒２後部に装着する際（即ちキャップ後ろ差し時）、保護部材４がキャップ５の後ろ差しを阻害せず、スムーズなキャップ装着が可能となる。
In the thermochromic writing instrument 1 of the ninth invention, the cap 5 is attached to the rear portion of the barrel 2 by forming the rear insertion fitting portion 51 of the cap 5 larger than the outer diameter of the protection member 4. At this time (that is, when the cap is inserted rearward), the protective member 4 does not hinder the rearward insertion of the cap 5, and the cap can be smoothly attached.
本願の第１０の発明は、前記第１乃至第６の発明の熱変色性筆記具１において、軸筒２の内部に熱変色性インキを収容し、前記軸筒２の前端に前記熱変色性インキが吐出可能なペン先２１を設け、前記軸筒２の前部外面に着脱自在に装着されるキャップ５を備え、前記キャップ５の頂部外面に前記摩擦体３を設けたことを要件とする。
A tenth invention of the present application is the thermochromic writing instrument 1 according to any one of the first to sixth inventions, wherein the thermochromic ink is housed inside the barrel 2, and the thermochromic ink is provided at the front end of the barrel 2. Is provided with a pen tip 21 capable of ejecting, a cap 5 detachably attached to the front outer surface of the barrel 2, and the friction body 3 is provided on the top outer surface of the cap 5.
前記第１０の発明の熱変色性筆記具１は、キャップ５の頂部外面に摩擦体３を備えるため、キャップ５をペン先側から取り外して、摩擦体３を保護部材４で覆った状態でペン先２１による筆記することができ、摩擦体３の使用時のみ、保護部材４を摩擦体３から取り外して使用でき、非使用時の摩擦体３の汚れをできる限り回避できる。
Since the thermochromic writing instrument 1 of the tenth invention has the friction body 3 on the outer surface of the top of the cap 5, the cap 5 is removed from the pen tip side, and the pen 3 is covered with the protection member 4 in the pen tip. It is possible to write with the reference numeral 21, and the protective member 4 can be removed from the friction body 3 and used only when the friction body 3 is used, and the dirt of the friction body 3 when not in use can be avoided as much as possible.
本願の第１１の発明は、前記第１乃至第１０の発明の熱変色性筆記具１において、取り外された前記保護部材４を前記摩擦体以外の部位に着脱自在に設けたことを要件とする。
The eleventh invention of the present application requires that, in the thermochromic writing instrument 1 of the first to tenth inventions, the removed protective member 4 is detachably provided at a site other than the friction body.
前記第１１の発明の熱変色性筆記具１は、摩擦体側から取り外された保護部材４の紛失を防ぐことができる。なお、前記摩擦体以外の部位は、例えば、軸筒２、キャップ５、操作部２２、クリップ等が挙げられる。
The thermochromic writing instrument 1 according to the eleventh aspect of the present invention can prevent loss of the protection member 4 removed from the friction body side. The parts other than the friction body include, for example, the shaft tube 2, the cap 5, the operation part 22, the clip, and the like.
本願の第１２の発明は、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磨耗性の弾性材料からなる摩擦体３を備えた摩擦具６であって、有底筒状体からなる保護部材４の内周面と前記摩擦体３の外周面とを着脱自在に直接嵌合させ、前記保護部材４を摩擦体３に嵌合させた状態において、前記保護部材４の頂部が前記摩擦体３の頂部よりも外方に位置してなることを要件とする。
A twelfth invention of the present application is a friction provided with a friction body 3 made of an elastic material of low abrasion capable of rubbing an image or handwriting of a thermochromic ink and thermally discoloring the image or handwriting by frictional heat generated at that time. In the tool 6, the inner peripheral surface of the protective member 4 made of a bottomed tubular body and the outer peripheral surface of the friction body 3 are detachably directly fitted to each other, and the protective member 4 is fitted to the friction body 3. In this state, the top of the protection member 4 is located outside the top of the friction body 3.
前記第１２の発明の摩擦具６は、摩擦体非使用時、ユーザーの指先との接触や、摩擦体３と収容体内面（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）との接触を回避でき、摩擦体３に手垢や埃等が付着すること（即ち摩擦体が汚れること）を防止できる。
The friction tool 6 according to the twelfth aspect of the invention is such that when the friction body is not used, the friction body 3 comes into contact with the user's fingertip, the friction body 3 and the inner surface of the housing (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). ) Can be avoided, and it is possible to prevent dirt, dust, etc. from adhering to the friction body 3 (that is, the friction body is contaminated).
また、前記第１２の発明の摩擦具６は、保護部材４が有底筒状体であり、保護部材４を摩擦体３に嵌合させた状態において、保護部材４により摩擦体３の外周面が包囲される。それにより、摩擦体非使用時、ユーザーの指先や、摩擦体３と収容体内面（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）との接触を確実に回避でき、摩擦体３が汚れることを確実に防止できる。
In the friction tool 6 of the twelfth invention, the protection member 4 is a bottomed tubular body, and the outer peripheral surface of the friction body 3 is protected by the protection member 4 when the protection member 4 is fitted into the friction body 3. Is besieged. As a result, when the friction body is not used, contact between the user's fingertip and the friction body 3 and the inner surface of the housing (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) can be reliably avoided, and It is possible to reliably prevent the body 3 from becoming dirty.
また、前記の第１２の発明の摩擦具６は、有底筒状体からなる保護部材４の内周面と前記摩擦体３の外周面とを着脱自在に直接嵌合させてなることにより、摩擦体非使用時、保護部材４の内周面と、低摩耗性の弾性材料からなる摩擦体３の外周面との安定した嵌合状態を維持でき、保護部材４が摩擦体３から不用意に脱落することを防止できる。前記保護部材４の内周面と前記摩擦体３の外周面との嵌合は、例えば、圧入嵌合、凹凸嵌合、ネジ嵌合等が挙げられる。
尚、本発明の摩擦具６は、熱変色性インキ及び該熱変色性インキが吐出可能なペン先を備えない。
In the friction tool 6 according to the twelfth aspect of the invention, the inner peripheral surface of the protective member 4 made of a bottomed tubular body and the outer peripheral surface of the friction body 3 are detachably fitted directly to each other. When the friction body is not used, a stable fitting state between the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 made of a low-wear elastic material can be maintained, and the protection member 4 is not prepared from the friction body 3. It can be prevented from falling off. The fitting of the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 may be, for example, press fitting, concavo-convex fitting, screw fitting, or the like.
The friction tool 6 of the present invention does not include a thermochromic ink and a pen tip that can eject the thermochromic ink.
本願の第１３の発明は、前記第１２の発明の摩擦具６において、前記保護部材４の内周面と前記摩擦体３の外周面とが着脱自在に嵌合する際、前記保護部材４の内部と外部とを連通する通気手段を備えたことを要件とする。
A thirteenth invention of the present application is the friction tool 6 according to the twelfth invention, wherein when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are detachably fitted, It is required to have a ventilation means for communicating the inside and the outside.
前記第１３の発明の摩擦具６は、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、保護部材４の内部を加圧・減圧せず、保護部材４を摩擦体３にスムーズに着脱させることができる。
The friction tool 6 of the thirteenth invention does not pressurize or depressurize the inside of the protection member 4 when attaching and detaching the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 to each other. The friction body 3 can be smoothly attached and detached.
本願の第１４の発明は、前記第１３の発明の摩擦具６において、前記保護部材４が、頂壁と該頂壁に連設される筒状の側壁とからなる有底筒状体であり、前記保護部材４の頂壁または側壁に、前記通気手段としての通気孔４２を設けたことを要件とする。
A fourteenth invention of the present application is the friction tool 6 according to the thirteenth invention, wherein the protection member 4 is a bottomed tubular body including a top wall and a tubular side wall continuous with the top wall. It is a requirement that the top wall or the side wall of the protection member 4 be provided with a ventilation hole 42 as the ventilation means.
前記第１４の発明の摩擦具６は、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、前記通気孔４２により、保護部材４の内部と外部とを確実に連通させることができる。
In the friction tool 6 of the fourteenth invention, the vent hole 42 ensures the inside and outside of the protective member 4 when the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 are attached and detached. Can be communicated.
本願の第１５の発明は、前記第１３の発明の摩擦具６において、前記保護部材４が、頂壁と該頂壁に連設される筒状の側壁とからなる有底筒状体であり、前記保護部材４の側壁の内周面と前記摩擦体３の外周面との間に、前記通気手段としての通気路を設けたことを要件とする。
A fifteenth invention of the present application is the friction tool 6 according to the thirteenth invention, wherein the protection member 4 is a bottomed tubular body including a top wall and a tubular side wall continuous with the top wall. It is a requirement that a ventilation passage as the ventilation means be provided between the inner peripheral surface of the side wall of the protection member 4 and the outer peripheral surface of the friction body 3.
前記第１５の発明の摩擦具６は、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、前記通気路により、保護部材４の内部と外部とを確実に連通させることができる。また、前記第１５の発明の摩擦具６は、摩擦体非使用時、通気手段を備えたにもかかわらず、摩擦体３を、頂壁や側壁に通気孔を備えない有底筒状体の保護部材４で覆うことができ、保護部材４の内部に塵や埃の侵入を防ぎ、より一層、摩擦体３の汚れを回避できる。
The friction tool 6 according to the fifteenth aspect of the invention reliably connects the inside and the outside of the protective member 4 by the air passage when the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 are attached and detached. Can be made In the friction tool 6 of the fifteenth invention, when the friction body is not used, the friction body 3 is a bottomed cylindrical body having no ventilation hole in the top wall or the side wall, although the friction means 3 is provided with the ventilation means. It can be covered with the protection member 4, and dust and dirt can be prevented from entering the inside of the protection member 4, and the dirt of the friction body 3 can be further avoided.
本願の第１６の発明は、前記第１２乃至１５の発明の摩擦具６において、取り外された前記保護部材４を前記摩擦体以外の部位に着脱自在に設けたことを要件とする。
A sixteenth invention of the present application is the friction tool 6 according to the twelfth to fifteenth inventions, wherein the removed protection member 4 is detachably provided on a portion other than the friction body.
前記第１６の発明に摩擦具６は、摩擦体側から取り外された保護部材４の紛失を防ぐことができる。
The friction tool 6 according to the sixteenth aspect of the present invention can prevent the protection member 4 removed from the friction body side from being lost.
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）からなるものではなく、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からなる。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）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), fluorine-based resin, chloroprene resin, nitrile resin, polyester-based resin, ethylene propylene diene rubber (EPDM) and the like. The elastic synthetic resin is not made of a highly wear-resistant elastic material (for example, eraser or the like), but is made of a low-wearing elastic material that hardly produces wear debris (erased dust) 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.).
本発明において、前記熱変色性インキは、加熱により変色または消色するタイプが好ましい。
In the present invention, the thermochromic ink is preferably of a type that discolors or disappears by heating.
本発明の熱変色性筆記具は、非使用時、摩擦体が汚れることを回避できる。
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、摩擦体が汚れることを回避できる。
The friction tool of the present invention can prevent the friction body from becoming dirty when not in use.
＜第１の実施の形態の熱変色性筆記具＞
図１乃至図３に本発明の第１の実施の形態の熱変色性筆記具１を示す。
本実施の形態の熱変色性筆記具１は、出没式の熱変色性筆記具である。
本実施の形態の熱変色性筆記具１は、軸筒２と、前記軸筒２内に前後方向に移動可能に収容される筆記体と、前記筆記体のペン先２１を軸筒２の前端孔より出没させる操作部２２と、前記軸筒２の後端に設けた摩擦体３と、前記摩擦体側に着脱自在に装着される保護部材４とからなる。前記筆記体の内部には熱変色性インキを収容され、筆記体の前端には、前記熱変色性インキが吐出可能なペン先２１が設けられる。
<The thermochromic writing instrument of the first embodiment>
1 to 3 show a thermochromic writing instrument 1 according to a first embodiment of the present invention.
The thermochromic writing instrument 1 of the present embodiment is a retractable thermochromic writing instrument.
The thermochromic writing instrument 1 according to the present embodiment has a barrel 2, a writing body housed in the barrel 2 so as to be movable in the front-rear direction, a pen tip 21 of the writing body, and a front end hole of the barrel 2. The operation unit 22 is further retracted, the friction body 3 is provided at the rear end of the shaft cylinder 2, and the protection member 4 is detachably mounted on the friction body side. A thermochromic ink is accommodated inside the writing body, and a pen tip 21 capable of ejecting the thermochromic ink is provided at the front end of the writing body.
本実施の形態の熱変色性筆記具１は、前記軸筒２の後部側壁より前後方向に移動可能な操作部２２（クリップ）を径方向外方に突設させ、前記操作部２２を前方にスライド操作することにより前記筆記体のペン先２１を軸筒２の前端孔から出没可能とする出没機構（サイドスライド式の出没機構）を備える。
In the thermochromic writing instrument 1 of the present embodiment, an operating portion 22 (clip) that is movable in the front-rear direction is provided on the rear side wall of the shaft tube 2 so as to project radially outward, and the operating portion 22 slides forward. The pen tip 21 of the cursive body is provided with a retractable mechanism (side slide type retractable mechanism) that can be retracted and retracted from the front end hole of the barrel 2.
前記出没機構は、これ以外にも、軸筒後端に設けた操作部を前方に押圧することによりペン先が出没する後端ノック式、軸筒側壁外面より突出する操作部を径方向内方に押圧することによりペン先が出没するサイドノック式、軸筒後部の操作部を回転操作することによりペン先が出没する回転式等が挙げられる。
In addition to this, the retracting mechanism is a rear end knock type in which the pen tip is retracted by pressing the operating portion provided at the rear end of the shaft cylinder forward, and the operating portion protruding from the outer surface of the shaft cylinder side wall is radially inward. The side-knock type in which the pen tip appears and disappears by pressing to, and the rotary type in which the pen tip appears and disappears by rotating the operation unit at the rear portion of the barrel.
前記軸筒２の後端には、低摩耗性の弾性材料（例えば、ＳＢＳ樹脂、ＳＥＢＳ樹脂、シリコーン樹脂）よりなる摩擦体３が固着され、前記摩擦体３が軸筒２後端より後方に突出される。前記軸筒２は合成樹脂または金属により形成される。
A friction body 3 made of a low-wear elastic material (for example, SBS resin, SEBS resin, silicone resin) is fixed to the rear end of the shaft cylinder 2, and the friction body 3 is located rearward of the rear end of the shaft cylinder 2. Be projected. The barrel 2 is made of synthetic resin or metal.
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）の筒状体からなる。前記保護部材４の内周面と、前記摩擦体３の外周面とが着脱自在に直接嵌合される。前記摩擦体３と保護部材４との具体的な構成は、図９乃至図１５の何れかの構成が採用される。
The protective member 4 is made of a cylindrical body made of synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.). The inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are detachably fitted directly. As a specific configuration of the friction body 3 and the protection member 4, any configuration of FIGS. 9 to 15 is adopted.
本実施の形態の熱変色性筆記具１は、摩擦体側に装着可能な保護部材４を着脱自在に備え、保護部材４を摩擦体側に装着した状態において、保護部材４の頂部が前記摩擦体３の頂部よりも外方に位置してなる。それにより、摩擦体非使用時、ユーザーの指先との接触や、摩擦体３と収容体内面（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）との接触を回避でき、摩擦体３に手垢や埃等が付着すること（即ち摩擦体３が汚れること）を防止できる。
The thermochromic writing instrument 1 of the present embodiment is detachably provided with a protective member 4 that can be mounted on the friction body side, and in the state where the protective member 4 is mounted on the friction body side, the top of the protective member 4 is the friction body 3 It is located outside the top. As a result, when the friction body is not used, it is possible to avoid contact with the user's fingertip and contact between the friction body 3 and the inner surface of the housing (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). It is possible to prevent dirt, dust, etc. from adhering to the friction body 3 (that is, the friction body 3 becomes dirty).
また、本実施の形態の熱変色性筆記具１は、保護部材４が筒状であり、保護部材４を摩擦体側に装着した状態において、保護部材４により摩擦体３の外周面が包囲される。それにより、摩擦体非使用時、ユーザーの指先や、摩擦体３と収容体内面（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）との接触を確実に回避でき、摩擦体３が汚れることを確実に防止できる。
Further, in the thermochromic writing instrument 1 of the present embodiment, the protective member 4 is cylindrical, and the outer peripheral surface of the friction body 3 is surrounded by the protective member 4 when the protective member 4 is mounted on the friction body side. As a result, when the friction body is not used, contact between the user's fingertip and the friction body 3 and the inner surface of the housing (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) can be reliably avoided, and It is possible to reliably prevent the body 3 from becoming dirty.
また、本実施の形態の熱変色性筆記具１は、保護部材４の内周面と摩擦体３の外周面とが着脱自在に直接嵌合してなることにより、摩擦体非使用時、筒状の保護部材４の内周面と、低摩耗性の弾性材料からなる摩擦体３の外周面との安定した嵌合状態を維持でき、保護部材４が摩擦体３から不用意に脱落することを防止できる。前記保護部材４の内周面と前記摩擦体３の外周面との嵌合は、例えば、圧入嵌合（図９）、凹凸嵌合（図１０）、ネジ嵌合（図１１）等が挙げられる。
Further, the thermochromic writing instrument 1 of the present embodiment has a tubular shape when the friction body is not used, because the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are directly and detachably fitted to each other. It is possible to maintain a stable fitting state between the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 made of a low-wear elastic material, and prevent the protective member 4 from accidentally falling off from the friction body 3. It can be prevented. The fitting of the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 may be, for example, press fitting (FIG. 9), concavo-convex fitting (FIG. 10), screw fitting (FIG. 11), or the like. Be done.
また、本実施の形態の熱変色性筆記具１は、軸筒２の後端に摩擦体３を備えるため、摩擦体３を保護部材４で覆った状態でペン先２１による筆記することができ、摩擦体３の使用時のみ、保護部材４を摩擦体３から取り外して使用でき、非使用時の摩擦体３の汚れをできる限り回避できる。
Further, since the thermochromic writing instrument 1 of the present embodiment has the friction body 3 at the rear end of the barrel 2, it is possible to write with the pen tip 21 while the friction body 3 is covered with the protective member 4. Only when the friction body 3 is used, the protection member 4 can be detached from the friction body 3 and used, and the dirt of the friction body 3 when not in use can be avoided as much as possible.
また、本実施の形態の熱変色性筆記具１は、摩擦体３より取り外された保護部材４を摩擦体以外の部位（例えば、軸筒、操作部、クリップ）に着脱自在に設けられる。本実施の形態では、具体的には、軸筒２の側壁に摩擦体係止部２３を設け、該摩擦体係止部２３に、摩擦体使用時、一時的に摩擦体３が係止される。それにより、摩擦体側から取り外された保護部材４の紛失を防ぐことができる。
Further, in the thermochromic writing instrument 1 of the present embodiment, the protective member 4 removed from the friction body 3 is detachably provided on a portion other than the friction body (for example, a shaft cylinder, an operating portion, a clip). In the present embodiment, specifically, the friction body locking portion 23 is provided on the side wall of the shaft cylinder 2, and the friction body 3 is temporarily locked to the friction body locking portion 23 when the friction body is used. It This makes it possible to prevent the protective member 4 removed from the friction body side from being lost.
＜第２の実施の形態の熱変色性筆記具＞
図４乃至図６に本発明の第２の実施の形態の熱変色性筆記具１を示す。
本実施の形態の熱変色性筆記具１は、キャップ式の熱変色性筆記具である。
本実施の形態の熱変色性筆記具１は、熱変色性インキを内部に収容した軸筒２と、前記軸筒２の前端に設けられ、前記熱変色性インキが吐出可能なペン先２１と、前記軸筒２の後端に設けられた摩擦体３と、前記軸筒２のペン先側に着脱自在に装着されるキャップ５と、前記摩擦体側に着脱自在に装着される保護部材４とからなる。
<The thermochromic writing instrument of the second embodiment>
4 to 6 show a thermochromic writing instrument 1 according to a second embodiment of the present invention.
The thermochromic writing instrument 1 of the present embodiment is a cap-type thermochromic writing instrument.
A thermochromic writing instrument 1 according to the present embodiment includes a barrel 2 that houses a thermochromic ink therein, a pen tip 21 that is provided at the front end of the barrel 2 and that can eject the thermochromic ink, From the friction body 3 provided at the rear end of the shaft cylinder 2, the cap 5 which is detachably mounted on the pen tip side of the shaft cylinder 2, and the protective member 4 which is detachably mounted on the friction body side. Become.
前記軸筒２の後端には、低摩耗性の弾性材料（例えば、ＳＢＳ樹脂、ＳＥＢＳ樹脂、シリコーン樹脂）よりなる摩擦体３が固着され、前記摩擦体３が軸筒２後端より後方に突出される。前記軸筒２は合成樹脂または金属により形成される。
A friction body 3 made of a low-wear elastic material (for example, SBS resin, SEBS resin, silicone resin) is fixed to the rear end of the shaft cylinder 2, and the friction body 3 is located rearward of the rear end of the shaft cylinder 2. Be projected. The barrel 2 is made of synthetic resin or metal.
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）の筒状体からなる。前記保護部材４の内周面と、前記摩擦体３の外周面とが着脱自在に直接嵌合される。なお、前記摩擦体３と保護部材４との具体的な構成は、図９乃至図１５の何れかの構成が採用される。
The protective member 4 is made of a cylindrical body made of synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.). The inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are detachably fitted directly. The specific configuration of the friction body 3 and the protection member 4 may be any of the configurations of FIGS. 9 to 15.
本実施の形態の熱変色性筆記具１は、摩擦体側に装着可能な保護部材４を着脱自在に備え、保護部材４を摩擦体側に装着した状態において、保護部材４の頂部が前記摩擦体３の頂部よりも外方に位置してなる。それにより、摩擦体非使用時、ユーザーの指先との接触や、摩擦体３と収容体内面（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）との接触を回避でき、摩擦体３に手垢や埃等が付着すること（即ち摩擦体３が汚れること）を防止できる。
The thermochromic writing instrument 1 of the present embodiment is detachably provided with a protective member 4 that can be mounted on the friction body side, and in the state where the protective member 4 is mounted on the friction body side, the top of the protective member 4 is the friction body 3 It is located outside the top. As a result, when the friction body is not used, it is possible to avoid contact with the user's fingertip and contact between the friction body 3 and the inner surface of the housing (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). It is possible to prevent dirt, dust, etc. from adhering to the friction body 3 (that is, the friction body 3 becomes dirty).
また、本実施の形態の熱変色性筆記具１は、保護部材４が筒状であり、保護部材４を摩擦体側に装着した状態において、保護部材４により摩擦体３の外周面が包囲される。それにより、摩擦体非使用時、ユーザーの指先や、摩擦体３と収容体内面（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）との接触を確実に回避でき、摩擦体３が汚れることを確実に防止できる。
Further, in the thermochromic writing instrument 1 of the present embodiment, the protective member 4 is cylindrical, and the outer peripheral surface of the friction body 3 is surrounded by the protective member 4 when the protective member 4 is mounted on the friction body side. As a result, when the friction body is not used, contact between the user's fingertip and the friction body 3 and the inner surface of the housing (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) can be reliably avoided, and It is possible to reliably prevent the body 3 from becoming dirty.
また、本実施の形態の熱変色性筆記具１は、保護部材４の内周面と摩擦体３の外周面とが着脱自在に直接嵌合してなることにより、摩擦体非使用時、筒状の保護部材４の内周面と、低摩耗性の弾性材料からなる摩擦体３の外周面との安定した嵌合状態を維持でき、保護部材４が摩擦体３から不用意に脱落することを防止できる。前記保護部材４の内周面と前記摩擦体３の外周面との嵌合は、例えば、圧入嵌合（図９）、凹凸嵌合（図１０）、ネジ嵌合（図１１）等が挙げられる。
Further, the thermochromic writing instrument 1 of the present embodiment has a tubular shape when the friction body is not used, because the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are directly and detachably fitted to each other. It is possible to maintain a stable fitting state between the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 made of a low-wear elastic material, and prevent the protective member 4 from accidentally falling off from the friction body 3. It can be prevented. The fitting of the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 may be, for example, press fitting (FIG. 9), concavo-convex fitting (FIG. 10), screw fitting (FIG. 11), or the like. Be done.
また、本実施の形態の熱変色性筆記具１は、軸筒２の後端に摩擦体３を備えるため、摩擦体３を保護部材４で覆った状態でペン先２１による筆記することができ、摩擦体３の使用時のみ、保護部材４を摩擦体３から取り外して使用でき、非使用時の摩擦体３の汚れをできる限り回避できる。
Further, since the thermochromic writing instrument 1 of the present embodiment has the friction body 3 at the rear end of the barrel 2, it is possible to write with the pen tip 21 while the friction body 3 is covered with the protective member 4. Only when the friction body 3 is used, the protection member 4 can be detached from the friction body 3 and used, and the dirt of the friction body 3 when not in use can be avoided as much as possible.
また、本実施の形態の熱変色性筆記具１は、前記軸筒２の前部外面及び後部外面に着脱自在に装着されるキャップ５を備え、前記キャップ５内面に、前記キャップ５内面と前記軸筒２後部外面とが嵌合する後ろ差し嵌合部５１を設け、前記キャップ５内面の後ろ差し嵌合部５１の内径が前記保護部材４の外径より大きく形成される。それにより、キャップ５を軸筒２後部に装着する際（即ちキャップ後ろ差し時）、保護部材４がキャップ５の後ろ差しを阻害せず、スムーズなキャップ装着が可能となる。
Further, the thermochromic writing instrument 1 of the present embodiment includes a cap 5 which is detachably attached to the front outer surface and the rear outer surface of the shaft tube 2, and the cap 5 inner surface and the shaft 5 are attached to the inner surface of the cap 5. A rear insertion fitting portion 51 that fits with the outer surface of the rear portion of the cylinder 2 is provided, and the inner diameter of the rear insertion fitting portion 51 on the inner surface of the cap 5 is formed to be larger than the outer diameter of the protection member 4. As a result, when the cap 5 is attached to the rear portion of the barrel 2 (that is, when the cap is inserted rearward), the protective member 4 does not hinder the rearward insertion of the cap 5, and the cap can be smoothly attached.
また、本実施の形態の熱変色性筆記具１は、摩擦体３より取り外された保護部材４を摩擦体以外の部位（例えば、軸筒、キャップ、クリップ）に着脱自在に設けられる。本実施の形態では、具体的には、キャップ５の頂部に摩擦体係止部５３を設け、該摩擦体係止部５３に、摩擦体使用時、一時的に摩擦体３が係止される。それにより、摩擦体側から取り外された保護部材４の紛失を防ぐことができる。
Further, in the thermochromic writing instrument 1 of the present embodiment, the protective member 4 removed from the friction body 3 is detachably provided on a portion other than the friction body (for example, a shaft cylinder, a cap, a clip). In the present embodiment, specifically, a friction body locking portion 53 is provided on the top of the cap 5, and the friction body 3 is temporarily locked to the friction body locking portion 53 when the friction body is used. .. This makes it possible to prevent the protective member 4 removed from the friction body side from being lost.
＜第３の実施の形態の熱変色性筆記具＞
図７及び図８に本発明の第３の実施の形態の熱変色性筆記具１を示す。
本実施の形態の熱変色性筆記具１は、キャップ式の熱変色性筆記具である。
本実施の形態の熱変色性筆記具１は、熱変色性インキを内部に収容した軸筒２と、前記軸筒２の前端に設けられ、前記熱変色性インキが吐出可能なペン先２１と、前記軸筒２のペン先側に装着可能なキャップ５と、前記キャップ５の頂部に固着された、前記摩擦体側に着脱自在に装着される保護部材４とからなる。
<The thermochromic writing instrument of the third embodiment>
7 and 8 show a thermochromic writing instrument 1 according to a third embodiment of the present invention.
The thermochromic writing instrument 1 of the present embodiment is a cap-type thermochromic writing instrument.
A thermochromic writing instrument 1 according to the present embodiment includes a barrel 2 that houses a thermochromic ink therein, a pen tip 21 that is provided at the front end of the barrel 2 and that can eject the thermochromic ink, It comprises a cap 5 that can be mounted on the pen tip side of the barrel 2, and a protection member 4 that is fixed to the top of the cap 5 and that is detachably mounted on the friction body side.
前記キャップ５の頂部には、低摩耗性の弾性材料（例えば、ＳＢＳ樹脂、ＳＥＢＳ樹脂、シリコーン樹脂）よりなる摩擦体３がキャップ５頂部の摩擦体保持部５２に固着され、前記摩擦体３が摩擦体保持部５２より外方に突出される。前記摩擦体３の頂壁外面は平面状となり、摩擦体３の側壁外面はストレート状（直円筒状）またはテーパ状となり、前記摩擦体３の頂壁と摩擦体３の側壁との間は、凸曲面状外面により接続される。前記頂壁の平面状外面、及び前記頂壁と摩擦体３の側壁との間の凸曲面状外面が、紙面上の熱変色性インキの筆跡を摩擦する摩擦部３１となる。前記軸筒２は合成樹脂または金属により形成される。
At the top of the cap 5, a friction body 3 made of a low-wear elastic material (for example, SBS resin, SEBS resin, silicone resin) is fixed to a friction body holding portion 52 at the top of the cap 5, and the friction body 3 is The friction body holding portion 52 is projected outward. The outer surface of the top wall of the friction body 3 is flat, the outer surface of the side wall of the friction body 3 is straight (rectangular cylindrical) or tapered, and the space between the top wall of the friction body 3 and the side wall of the friction body 3 is Connected by a convex curved outer surface. The flat outer surface of the top wall and the convex curved outer surface between the top wall and the side wall of the friction body 3 serve as a friction portion 31 that rubs the handwriting of the thermochromic ink on the paper surface. The barrel 2 is made of synthetic resin or metal.
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）の筒状体からなる。
The protective member 4 is made of a cylindrical body made of synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.).
前記保護部材４と前記摩擦体３の取付構造は、前記保護部材４の内周面と前記摩擦体保持部５２の外周面とが着脱自在に嵌合される構成、または、前記保護部材４の内周面と前記摩擦体３の外周面とが着脱自在に直接嵌合される構成、あるいは、前記保護部材４の内周面と前記摩擦体保持部５２の外周面とが着脱自在に嵌合され、且つ、前記保護部材４の内周面と前記摩擦体３の外周面とが着脱自在に直接嵌合される構成が挙げられる。前記保護部材４の内周面と前記摩擦体保持部５２の外周面との嵌合、及び前記保護部材４の内周面と前記摩擦体３の外周面との嵌合は、例えば、圧入嵌合（図９）、凹凸嵌合（図１０）、ネジ嵌合（図１１）等が挙げられる。
The attachment structure of the protection member 4 and the friction body 3 is configured such that the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body holding portion 52 are detachably fitted, or The inner peripheral surface and the outer peripheral surface of the friction body 3 are removably fitted directly, or the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body holding portion 52 are removably fitted. In addition, the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are detachably and directly fitted to each other. The fitting of the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body holding portion 52, and the fitting of the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are, for example, press fitting. 9 (FIG. 9), concave-convex fitting (FIG. 10), screw fitting (FIG. 11) and the like.
また、保護部材４の内周面と前記摩擦体３の外周面とが着脱自在に嵌合する際、前記保護部材４の内部と外部とを連通する通気手段（例えば、図１２乃至図１５の構成）を設けることもできる。
Further, when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are detachably fitted, a ventilation means for communicating the inside and the outside of the protection member 4 (for example, in FIGS. 12 to 15). Can also be provided.
本実施の形態の熱変色性筆記具１は、摩擦体側に装着可能な保護部材４を着脱自在に備え、保護部材４を摩擦体側に装着した状態において、保護部材４の頂部が前記摩擦体３の頂部よりも外方に位置してなる。それにより、摩擦体非使用時、ユーザーの指先との接触や、摩擦体３と収容体内面（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）との接触を回避でき、摩擦体３に手垢や埃等が付着すること（即ち摩擦体３が汚れること）を防止できる。
The thermochromic writing instrument 1 of the present embodiment is detachably provided with a protective member 4 that can be mounted on the friction body side, and in the state where the protective member 4 is mounted on the friction body side, the top of the protective member 4 is the friction body 3 It is located outside the top. As a result, when the friction body is not used, it is possible to avoid contact with the user's fingertip and contact between the friction body 3 and the inner surface of the housing (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). It is possible to prevent dirt, dust, etc. from adhering to the friction body 3 (that is, the friction body 3 becomes dirty).
また、本実施の形態の熱変色性筆記具１は、保護部材４が筒状であり、保護部材４を摩擦体側に装着した状態において、保護部材４により摩擦体３の外周面が包囲される。それにより、摩擦体非使用時、ユーザーの指先や、摩擦体３と収容体内面（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）との接触を確実に回避でき、摩擦体３が汚れることを確実に防止できる。
Further, in the thermochromic writing instrument 1 of the present embodiment, the protective member 4 is cylindrical, and the outer peripheral surface of the friction body 3 is surrounded by the protective member 4 when the protective member 4 is mounted on the friction body side. As a result, when the friction body is not used, contact between the user's fingertip and the friction body 3 and the inner surface of the housing (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) can be reliably avoided, and It is possible to reliably prevent the body 3 from becoming dirty.
また、本実施の形態の熱変色性筆記具１は、保護部材４の内周面と摩擦体３の外周面とが着脱自在に直接嵌合してなる場合、摩擦体非使用時、筒状の保護部材４の内周面と、低摩耗性の弾性材料からなる摩擦体３の外周面との安定した嵌合状態を維持でき、保護部材４が摩擦体３から不用意に脱落することを防止できる。
Further, the thermochromic writing instrument 1 of the present embodiment has a tubular shape when the friction body is not used when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are detachably fitted directly. It is possible to maintain a stable fitting state between the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 made of a low-wear elastic material, and prevent the protective member 4 from being accidentally dropped from the friction body 3. it can.
また、本実施の形態の熱変色性筆記具１は、軸筒２の内部に熱変色性インキを収容し、前記軸筒２の前端に前記熱変色性インキが吐出可能なペン先２１を設け、前記軸筒２の前部外面に着脱自在に装着されるキャップ５を備え、前記キャップ５の頂部外面に前記摩擦体３を設けたことにより、キャップ５をペン先側から取り外して、摩擦体３を保護部材４で覆った状態でペン先２１による筆記することができ、摩擦体３の使用時のみ、保護部材４を摩擦体３から取り外して使用でき、非使用時の摩擦体３の汚れをできる限り回避できる。
In addition, the thermochromic writing instrument 1 of the present embodiment accommodates the thermochromic ink inside the barrel 2, and provides the front end of the barrel 2 with the pen tip 21 capable of ejecting the thermochromic ink. By providing the cap 5 detachably mounted on the outer surface of the front portion of the barrel 2 and by providing the friction body 3 on the outer surface of the top portion of the cap 5, the cap 5 is removed from the pen tip side, and the friction body 3 is provided. Can be written with the pen tip 21 while being covered with the protective member 4, and the protective member 4 can be detached from the friction body 3 and used only when the friction body 3 is used. It can be avoided as much as possible.
また、本実施の形態の熱変色性筆記具１は、摩擦体３より取り外された保護部材４を摩擦体以外の部位（例えば、軸筒、キャップ、クリップ）に着脱自在に設けられる。本実施の形態では、具体的には、軸筒２の後端に摩擦体係止部２３を設け、該摩擦体係止部２３に、摩擦体使用時、一時的に摩擦体３が係止される。それにより、摩擦体側から取り外された保護部材４の紛失を防ぐことができる。
Further, in the thermochromic writing instrument 1 of the present embodiment, the protective member 4 removed from the friction body 3 is detachably provided on a portion other than the friction body (for example, a shaft cylinder, a cap, a clip). In the present embodiment, specifically, the friction body locking portion 23 is provided at the rear end of the shaft tube 2, and the friction body 3 is temporarily locked to the friction body locking portion 23 when the friction body is used. To be done. This makes it possible to prevent the protective member 4 removed from the friction body side from being lost.
＜第４の実施の形態の摩擦具＞
図１６及び図１７に本発明の第４の実施の形態の摩擦具６を示す。
本実施の形態の摩擦具６は、本体７と、前記本体７の一端に設けた摩擦体３と、前記摩擦体３に着脱自在に嵌合される保護部材４とからなる。
<Friction tool of the fourth embodiment>
16 and 17 show a friction tool 6 according to a fourth embodiment of the present invention.
The friction tool 6 of the present embodiment includes a main body 7, a friction body 3 provided at one end of the main body 7, and a protection member 4 detachably fitted to the friction body 3.
前記本体７の一端には、低摩耗性の弾性材料（例えば、ＳＢＳ樹脂、ＳＥＢＳ樹脂、シリコーン樹脂）よりなる摩擦体３が固着され、前記摩擦体３が本体７の一端より外方に突出される。前記本体７は合成樹脂または金属により形成される。前記本体７の形状は、柱状、筒状、棒状等、把持可能であれば、何れであってもよい。
A friction body 3 made of a low-wear elastic material (eg, SBS resin, SEBS resin, silicone resin) is fixed to one end of the main body 7, and the friction body 3 is projected outward from one end of the main body 7. It The body 7 is made of synthetic resin or metal. The main body 7 may have any shape such as a columnar shape, a cylindrical shape, or a rod shape as long as it can be grasped.
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）の有底筒状体からなる。前記保護部材４の内周面と、前記摩擦体３の外周面とが着脱自在に直接嵌合される。前記摩擦体３と保護部材４との具体的な構成は、図９乃至図１５の何れかの構成が採用される。
The protective member 4 is a bottomed tubular body made of synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, or the like). The inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are detachably fitted directly. As a specific configuration of the friction body 3 and the protection member 4, any configuration of FIGS. 9 to 15 is adopted.
本実施の形態の摩擦具６は、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磨耗性の弾性材料からなる摩擦体３を備えた摩擦具６であって、有底筒状体からなる保護部材４の内周面と前記摩擦体３の外周面とを着脱自在に直接嵌合させ、前記保護部材４を摩擦体３に嵌合させた状態において、前記保護部材４の頂部が前記摩擦体３の頂部よりも外方に位置してなる。それにより、摩擦体非使用時、ユーザーの指先との接触や、摩擦体３と収容体内面（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）との接触を回避でき、摩擦体３に手垢や埃等が付着すること（即ち摩擦体が汚れること）を防止できる。
The friction tool 6 according to the present embodiment includes a friction body 3 made of an elastic material with low abrasion, which is capable of rubbing an image or handwriting of thermochromic ink and thermally discoloring the image or handwriting by frictional heat generated at that time. In the friction tool 6, the inner peripheral surface of the protective member 4 formed of a bottomed cylindrical body and the outer peripheral surface of the friction body 3 are detachably directly fitted to each other, and the protective member 4 is fitted to the friction body 3. In the combined state, the top of the protection member 4 is located outside the top of the friction body 3. As a result, when the friction body is not used, it is possible to avoid contact with the user's fingertip and contact between the friction body 3 and the inner surface of the housing (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). It is possible to prevent dirt, dust, etc. from adhering to the friction body 3 (that is, the friction body is contaminated).
また、本実施の形態の摩擦具６は、保護部材４が有底筒状体からなり、保護部材４を摩擦体３に嵌合させた状態において、保護部材４により摩擦体３の頂部及び外周面が包囲される。それにより、摩擦体非使用時、ユーザーの指先や、摩擦体３と収容体内面（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）との接触を確実に回避でき、摩擦体３が汚れることを確実に防止できる。
Further, in the friction tool 6 according to the present embodiment, the protection member 4 is formed of a bottomed tubular body, and in the state where the protection member 4 is fitted to the friction body 3, the protection member 4 causes the top and outer periphery of the friction body 3 to rotate. The face is surrounded. As a result, when the friction body is not used, contact between the user's fingertip and the friction body 3 and the inner surface of the housing (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) can be reliably avoided, and It is possible to reliably prevent the body 3 from becoming dirty.
また、本実施の形態の摩擦具６は、有底筒状体からなる保護部材４の内周面と前記摩擦体３の外周面とを着脱自在に直接嵌合させてなることにより、摩擦体非使用時、筒状の保護部材４の内周面と、低摩耗性の弾性材料からなる摩擦体３の外周面との安定した嵌合状態を維持でき、保護部材４が摩擦体３から不用意に脱落することを防止できる。前記保護部材４の内周面と前記摩擦体３の外周面との嵌合は、例えば、圧入嵌合（図９）、凹凸嵌合（図１０）、ネジ嵌合（図１１）等が挙げられる。
尚、本発明の摩擦具６は、熱変色性筆記具を兼ねず、本体７内に熱変色性インキを備えないとともに、本体７の端部に熱変色性インキが吐出可能なペン先を備えない。
Further, the friction tool 6 of the present embodiment is configured such that the inner peripheral surface of the protective member 4 made of a bottomed tubular body and the outer peripheral surface of the friction body 3 are detachably and directly fitted to each other. When not in use, it is possible to maintain a stable fitting state between the inner peripheral surface of the cylindrical protection member 4 and the outer peripheral surface of the friction body 3 made of a low-wear elastic material. It can be prevented from falling off easily. The fitting of the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 may be, for example, press fitting (FIG. 9), concavo-convex fitting (FIG. 10), screw fitting (FIG. 11), or the like. Be done.
The friction tool 6 of the present invention does not serve as a thermochromic writing tool, does not include the thermochromic ink in the main body 7, and does not include a pen tip capable of ejecting the thermochromic ink at the end of the main body 7. ..
また、本実施の形態の摩擦具６は、摩擦体３より取り外された保護部材４を摩擦体以外の部位（例えば、本体７の他端、本体７の側壁）に着脱自在に設けられる。本実施の形態では、具体的には、本体７の他端に摩擦体係止部７１を設け、該摩擦体係止部７１に、摩擦体使用時、一時的に摩擦体３が係止される。それにより、摩擦体側から取り外された保護部材４の紛失を防ぐことができる。
Further, in the friction tool 6 according to the present embodiment, the protection member 4 removed from the friction body 3 is detachably provided on a portion other than the friction body (for example, the other end of the main body 7 or the side wall of the main body 7). In the present embodiment, specifically, the friction body locking portion 71 is provided at the other end of the main body 7, and the friction body 3 is temporarily locked to the friction body locking portion 71 when the friction body is used. It This makes it possible to prevent the protective member 4 removed from the friction body side from being lost.
＜摩擦体と保護部材の第１の構成＞
図９に摩擦体３と保護部材４の第１の構成を示す。本構成は、第１乃至第３の実施の形態の熱変色性筆記具１及び第４の実施の形態の摩擦具６に採用される。
摩擦体３の頂壁外面には、紙面上の熱変色性インキの筆跡を摩擦する摩擦部３１が形成される。前記摩擦部３１の側壁外周面には、保護部材４と嵌合される外側嵌合部３２が形成される。摩擦体３の頂壁外面（摩擦部３１）は凸曲面となり、摩擦体３の側壁外周面はストレート状（直円筒状）またはテーパ状となっている。
<First Structure of Friction Body and Protective Member>
FIG. 9 shows a first configuration of the friction body 3 and the protection member 4. This configuration is adopted in the thermochromic writing instrument 1 of the first to third embodiments and the friction tool 6 of the fourth embodiment.
On the outer surface of the top wall of the friction body 3, a friction portion 31 for rubbing the handwriting of the thermochromic ink on the paper surface is formed. An outer fitting portion 32 that fits with the protection member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The outer surface (friction portion 31) of the top wall of the friction body 3 has a convex curved surface, and the outer peripheral surface of the side wall of the friction body 3 has a straight shape (rectangular cylinder shape) or a tapered shape.
保護部材４は、頂壁と該頂壁に連設される筒状の側壁とからなる一端が開口された有底筒状体（例えば有底円筒体）である。前記保護部材４の側壁内周面には、摩擦体３の外側嵌合部３２と直接嵌合可能な内側嵌合部４１が形成される。
The protection member 4 is a bottomed tubular body (for example, a bottomed cylindrical body) having an opening at one end, which is composed of a top wall and a tubular side wall continuous with the top wall. An inner fitting portion 41 that can be directly fitted to the outer fitting portion 32 of the friction body 3 is formed on the inner peripheral surface of the side wall of the protection member 4.
前記摩擦体３の外側嵌合部３２はストレート状の外面からなり、前記保護部材４の内側嵌合部４１がストレート状の内面からなり、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とが着脱自在に圧入嵌合される。前記摩擦体３の内方（即ち摩擦体３の突出方向と反対側）には、段部８が形成され、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とを圧入嵌合させた際、前記段部８と前記保護部材４の開口端または前記段部８と前記保護部材４の内壁とが当接される。前記段部８は、熱変色性筆記具１の場合は、軸筒２または摩擦体３に形成され、摩擦具６の場合、本体７または摩擦体３に形成される。
The outer fitting portion 32 of the friction body 3 is formed of a straight outer surface, the inner fitting portion 41 of the protection member 4 is formed of a straight inner surface, and the outer fitting portion 32 of the friction body 3 and the protection member are formed. The inner fitting portion 41 of No. 4 is press-fitted and fitted detachably. A step portion 8 is formed on the inner side of the friction body 3 (that is, on the side opposite to the protruding direction of the friction body 3), and the outer fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4 are formed. When they are press-fitted to each other, the step portion 8 and the open end of the protection member 4 or the step portion 8 and the inner wall of the protection member 4 are brought into contact with each other. The step portion 8 is formed on the barrel 2 or the friction body 3 in the case of the thermochromic writing instrument 1, and is formed in the main body 7 or the friction body 3 in the case of the friction instrument 6.
＜摩擦体と保護部材の第２の構成＞
図１０に摩擦体３と保護部材４の第２の構成を示す。本構成は、第１乃至第３の実施の形態の熱変色性筆記具１及び第４の実施の形態の摩擦具６に採用される。
摩擦体３の頂壁外面には、紙面上の熱変色性インキの筆跡を摩擦する摩擦部３１が形成される。前記摩擦部３１の側壁外周面には、保護部材４と嵌合される外側嵌合部３２が形成される。摩擦体３の頂壁外面（摩擦部３１）は凸曲面となり、摩擦体３の側壁外周面はストレート状（直円筒状）またはテーパ状となっている。
<Second configuration of friction body and protection member>
FIG. 10 shows a second configuration of the friction body 3 and the protection member 4. This configuration is adopted in the thermochromic writing instrument 1 of the first to third embodiments and the friction tool 6 of the fourth embodiment.
On the outer surface of the top wall of the friction body 3, a friction portion 31 for rubbing the handwriting of the thermochromic ink on the paper surface is formed. An outer fitting portion 32 that fits with the protection member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The outer surface (friction portion 31) of the top wall of the friction body 3 has a convex curved surface, and the outer peripheral surface of the side wall of the friction body 3 has a straight shape (rectangular cylinder shape) or a tapered shape.
保護部材４は、頂壁と該頂壁に連設される筒状の側壁とからなる一端が開口された有底筒状体（例えば有底円筒体）である。前記保護部材４の側壁内周面には、摩擦体３の外側嵌合部３２と直接嵌合可能な内側嵌合部４１が形成される。
The protection member 4 is a bottomed tubular body (for example, a bottomed cylindrical body) having an opening at one end, which is composed of a top wall and a tubular side wall continuous with the top wall. An inner fitting portion 41 that can be directly fitted to the outer fitting portion 32 of the friction body 3 is formed on the inner peripheral surface of the side wall of the protection member 4.
前記摩擦体３の外側嵌合部３２は外向突起（例えば、環状突起または複数個の突起群）からなり、前記保護部材４の内側嵌合部４１は内向突起（例えば、環状突起または複数個の突起群）からなり、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とが着脱自在に凹凸嵌合（いわゆる乗り越え嵌合）される。前記摩擦体３の内方（即ち摩擦体３の突出方向と反対側）には、段部８が形成され、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とを凹凸嵌合させた際、前記段部８と前記保護部材４の開口端または前記段部８と前記保護部材４の内壁とが当接される。前記段部８は、熱変色性筆記具１の場合は、軸筒２または摩擦体３に形成され、摩擦具６の場合、本体７または摩擦体３に形成される。
The outer fitting portion 32 of the friction body 3 includes an outward protrusion (for example, an annular protrusion or a plurality of protrusion groups), and the inner fitting portion 41 of the protection member 4 includes an inward protrusion (for example, an annular protrusion or a plurality of protrusions). The outer fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4 are detachably engaged with each other by projections and depressions (so-called overcoming fitting). A step portion 8 is formed on the inner side of the friction body 3 (that is, on the side opposite to the protruding direction of the friction body 3), and the outer fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4 are formed. When the concave and convex portions are fitted together, the step portion 8 and the open end of the protective member 4 or the step portion 8 and the inner wall of the protective member 4 are brought into contact with each other. The step portion 8 is formed on the barrel 2 or the friction body 3 in the case of the thermochromic writing instrument 1, and is formed in the main body 7 or the friction body 3 in the case of the friction instrument 6.
＜摩擦体と保護部材の第３の構成＞
図１１に摩擦体３と保護部材４の第３の構成を示す。本構成は、第１乃至第３の実施の形態の熱変色性筆記具１及び第４の実施の形態の摩擦具６に採用される。
摩擦体３の頂壁外面には、紙面上の熱変色性インキの筆跡を摩擦する摩擦部３１が形成される。前記摩擦部３１の側壁外周面には、保護部材４と嵌合される外側嵌合部３２が形成される。摩擦体３の頂壁外面（摩擦部３１）は凸曲面となり、摩擦体３の側壁外周面はストレート状（直円筒状）またはテーパ状となっている。
<Third configuration of friction body and protection member>
FIG. 11 shows a third structure of the friction body 3 and the protection member 4. This configuration is adopted in the thermochromic writing instrument 1 of the first to third embodiments and the friction tool 6 of the fourth embodiment.
On the outer surface of the top wall of the friction body 3, a friction portion 31 for rubbing the handwriting of the thermochromic ink on the paper surface is formed. An outer fitting portion 32 that fits with the protection member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The outer surface (friction portion 31) of the top wall of the friction body 3 has a convex curved surface, and the outer peripheral surface of the side wall of the friction body 3 has a straight shape (rectangular cylinder shape) or a tapered shape.
保護部材４は、頂壁と該頂壁に連設される筒状の側壁とからなる一端が開口された有底筒状体（例えば有底円筒体）である。前記保護部材４の側壁内周面には、摩擦体３の外側嵌合部３２と直接嵌合可能な内側嵌合部４１が形成される。
The protection member 4 is a bottomed tubular body (for example, a bottomed cylindrical body) having an opening at one end, which is composed of a top wall and a tubular side wall continuous with the top wall. An inner fitting portion 41 that can be directly fitted to the outer fitting portion 32 of the friction body 3 is formed on the inner peripheral surface of the side wall of the protection member 4.
前記摩擦体３の外側嵌合部３２はオネジ部からなり、前記保護部材４の内側嵌合部４１はメネジ部からなり、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とが着脱自在にネジ嵌合（即ち螺合）される。前記摩擦体３の内方（即ち摩擦体３の突出方向と反対側）には、段部８が形成され、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とをネジ嵌合させた際、前記段部８と前記保護部材４の開口端または前記段部８と前記保護部材４の内壁とが当接される。前記段部８は、熱変色性筆記具１の場合は、軸筒２または摩擦体３に形成され、摩擦具６の場合、本体７または摩擦体３に形成される。
The outer fitting portion 32 of the friction body 3 is a male thread portion, the inner fitting portion 41 of the protection member 4 is a female thread portion, and the outer fitting portion 32 of the friction body 3 and the inner fitting portion of the protection member 4 are fitted. The joint portion 41 is detachably screw-fitted (that is, screwed). A step portion 8 is formed on the inner side of the friction body 3 (that is, on the side opposite to the protruding direction of the friction body 3), and the outer fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4 are formed. When the screws are fitted to each other, the step portion 8 and the open end of the protection member 4 or the step portion 8 and the inner wall of the protection member 4 are brought into contact with each other. The step portion 8 is formed on the barrel 2 or the friction body 3 in the case of the thermochromic writing instrument 1, and is formed in the main body 7 or the friction body 3 in the case of the friction instrument 6.
＜摩擦体と保護部材の第４の構成＞
図１２に摩擦体３と保護部材４の第４の構成を示す。本構成は、第１乃至第３の実施の形態の熱変色性筆記具１及び第４の実施の形態の摩擦具６に採用される。
摩擦体３の頂壁外面には、紙面上の熱変色性インキの筆跡を摩擦する摩擦部３１が形成される。前記摩擦部３１の側壁外周面には、保護部材４と嵌合される外側嵌合部３２が形成される。摩擦体３の頂壁外面（摩擦部３１）は凸曲面となり、摩擦体３の側壁外周面はストレート状（直円筒状）またはテーパ状となっている。
<Fourth Structure of Friction Body and Protective Member>
FIG. 12 shows a fourth configuration of the friction body 3 and the protection member 4. This configuration is adopted in the thermochromic writing instrument 1 of the first to third embodiments and the friction tool 6 of the fourth embodiment.
On the outer surface of the top wall of the friction body 3, a friction portion 31 for rubbing the handwriting of the thermochromic ink on the paper surface is formed. An outer fitting portion 32 that fits with the protection member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The outer surface (friction portion 31) of the top wall of the friction body 3 has a convex curved surface, and the outer peripheral surface of the side wall of the friction body 3 has a straight shape (rectangular cylinder shape) or a tapered shape.
保護部材４は、頂壁と該頂壁に連設される筒状の側壁とからなる有底筒状体（例えば有底円筒体）である。前記保護部材４の側壁内周面には、摩擦体３の外側嵌合部３２と直接嵌合可能な内側嵌合部４１が形成される。
The protection member 4 is a bottomed tubular body (for example, a bottomed cylindrical body) including a top wall and a tubular side wall continuous with the top wall. An inner fitting portion 41 that can be directly fitted to the outer fitting portion 32 of the friction body 3 is formed on the inner peripheral surface of the side wall of the protection member 4.
前記摩擦体３の外側嵌合部３２はストレート状の外面（直円筒状外面）からなり、前記保護部材４の内側嵌合部４１がストレート状の内面（直円筒状内面）からなり、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とが着脱自在に圧入嵌合される。なお、本構成において、嵌合構造は、圧入嵌合（図９）以外にも、凹凸嵌合（図１０）、ネジ嵌合（図１１）を採用することもできる。前記摩擦体３の内方（即ち摩擦体３の突出方向と反対側）には、段部８が形成され、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とを嵌合させた際、前記段部８と前記保護部材４の開口端または前記段部８と前記保護部材４の内壁とが当接される。前記段部８は、熱変色性筆記具１の場合は、軸筒２または摩擦体３に形成され、摩擦具６の場合、本体７または摩擦体３に形成される。
The outer fitting portion 32 of the friction body 3 has a straight outer surface (right cylindrical outer surface), and the inner fitting portion 41 of the protection member 4 has a straight inner surface (right cylindrical inner surface). The outer fitting portion 32 of the body 3 and the inner fitting portion 41 of the protection member 4 are detachably press fitted. In addition, in the present configuration, the fitting structure may employ concave-convex fitting (FIG. 10) or screw fitting (FIG. 11) in addition to press-fitting fitting (FIG. 9). A step portion 8 is formed on the inner side of the friction body 3 (that is, on the side opposite to the protruding direction of the friction body 3), and the outer fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4 are formed. When they are fitted together, the stepped portion 8 and the open end of the protection member 4 or the stepped portion 8 and the inner wall of the protection member 4 are brought into contact with each other. The step portion 8 is formed on the barrel 2 or the friction body 3 in the case of the thermochromic writing instrument 1, and is formed in the main body 7 or the friction body 3 in the case of the friction instrument 6.
前記保護部材４が、頂壁と該頂壁に連設される筒状の側壁とからなる一端が開口された有底筒状体であり、前記保護部材４の頂壁及び／又は側壁に、前記通気手段としての通気孔４２が形成される。前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、前記通気孔４２により、保護部材４の内部と外部とを確実に連通させることができる。それにより、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、保護部材４の内部を加圧・減圧せず、保護部材４を摩擦体３にスムーズに着脱させることができる。
The protection member 4 is a bottomed tubular body having an opening at one end consisting of a top wall and a tubular side wall continuous with the top wall, and on the top wall and / or side wall of the protection member 4, A ventilation hole 42 is formed as the ventilation means. When the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the ventilation hole 42 can surely establish communication between the inside and the outside of the protection member 4. Thereby, when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are attached / detached, the protection member 4 is smoothly attached / detached to / from the friction body 3 without pressurizing / depressurizing the inside of the protection member 4. be able to.
＜摩擦体と保護部材の第５の構成＞
図１３に摩擦体３と保護部材４の第５の構成を示す。本構成は、第１乃至第３の実施の形態の熱変色性筆記具１及び第４の実施の形態の摩擦具６に採用される。
摩擦体３の頂壁外面には、紙面上の熱変色性インキの筆跡を摩擦する摩擦部３１が形成される。前記摩擦部３１の側壁外周面には、保護部材４と嵌合される外側嵌合部３２が形成される。摩擦体３の頂壁外面（摩擦部３１）は凸曲面となり、摩擦体３の側壁外周面はストレート状（直円筒状）またはテーパー状となっている。
<Fifth Structure of Friction Body and Protective Member>
FIG. 13 shows a fifth configuration of the friction body 3 and the protection member 4. This configuration is adopted in the thermochromic writing instrument 1 of the first to third embodiments and the friction tool 6 of the fourth embodiment.
On the outer surface of the top wall of the friction body 3, a friction portion 31 for rubbing the handwriting of the thermochromic ink on the paper surface is formed. An outer fitting portion 32 that fits with the protection member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The outer surface (friction portion 31) of the top wall of the friction body 3 has a convex curved surface, and the outer peripheral surface of the side wall of the friction body 3 has a straight shape (rectangular cylinder shape) or a tapered shape.
保護部材４は、両端が開口された筒状の側壁とからなる有底筒状体（例えば有底円筒体）である。前記保護部材４の側壁内周面には、摩擦体３の外側嵌合部３２と直接嵌合可能な内側嵌合部４１が形成される。
The protection member 4 is a bottomed tubular body (for example, a bottomed cylindrical body) including a tubular side wall with both ends open. An inner fitting portion 41 that can be directly fitted to the outer fitting portion 32 of the friction body 3 is formed on the inner peripheral surface of the side wall of the protection member 4.
前記摩擦体３の外側嵌合部３２はストレート状外面（直円筒状の外面）からなり、前記保護部材４の内側嵌合部４１がストレート状内面（直円筒状の内面）からなり、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とが着脱自在に圧入嵌合される。前記保護部材４は、どちらの開口側からでも摩擦体３に嵌合できる。なお、本構成において、嵌合構造は、圧入嵌合（図９）以外にも、凹凸嵌合（図１０）、ネジ嵌合（図１１）を採用することもできる。前記摩擦体３の内方（即ち摩擦体３の突出方向と反対側）には、段部８が形成され、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とを嵌合させた際、前記段部８と前記保護部材４の開口端または前記段部８と前記保護部材４の内壁とが当接される。前記段部８は、熱変色性筆記具１の場合は、軸筒２または摩擦体３に形成され、摩擦具６の場合、本体７または摩擦体３に形成される。
The outer fitting portion 32 of the friction body 3 has a straight outer surface (a right cylindrical outer surface), and the inner fitting portion 41 of the protection member 4 has a straight inner surface (a right cylindrical inner surface). The outer fitting portion 32 of the body 3 and the inner fitting portion 41 of the protection member 4 are detachably press fitted. The protection member 4 can be fitted to the friction body 3 from either opening side. In addition, in the present configuration, the fitting structure may employ concave-convex fitting (FIG. 10) or screw fitting (FIG. 11) in addition to press-fitting fitting (FIG. 9). A step portion 8 is formed on the inner side of the friction body 3 (that is, on the side opposite to the protruding direction of the friction body 3), and the outer fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4 are formed. When they are fitted together, the stepped portion 8 and the open end of the protection member 4 or the stepped portion 8 and the inner wall of the protection member 4 are brought into contact with each other. The step portion 8 is formed on the barrel 2 or the friction body 3 in the case of the thermochromic writing instrument 1, and is formed on the main body 7 or the friction body 3 in the case of the friction instrument 6.
前記保護部材４は、摩擦体３に嵌合させる際、頂部が開口され、通気手段としての通気孔４２が形成される。前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、前記通気孔４２により、保護部材４の内部と外部とを確実に連通させることができる。それにより、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、保護部材４の内部を加圧・減圧せず、保護部材４を摩擦体３にスムーズに着脱させることができる。
When the protection member 4 is fitted into the friction body 3, the top portion is opened and a ventilation hole 42 as a ventilation means is formed. When the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the ventilation hole 42 can surely establish communication between the inside and the outside of the protection member 4. Thereby, when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are attached / detached, the protection member 4 is smoothly attached / detached to / from the friction body 3 without pressurizing / depressurizing the inside of the protection member 4. be able to.
＜摩擦体と保護部材の第６の構成＞
図１４に摩擦体３と保護部材４の第６の構成を示す。本構成は、第１乃至第３の実施の形態の熱変色性筆記具１及び第４の実施の形態の摩擦具６に採用される。
摩擦体３の頂壁外面には、紙面上の熱変色性インキの筆跡を摩擦する摩擦部３１が形成される。前記摩擦部３１の側壁外周面には、保護部材４と嵌合される外側嵌合部３２が形成される。摩擦体３の頂壁外面（摩擦部３１）は凸曲面となり、摩擦体３の側壁外周面はストレート状（直円筒状）またはテーパー状となっている。
<Sixth configuration of friction body and protection member>
FIG. 14 shows a sixth structure of the friction body 3 and the protection member 4. This configuration is adopted in the thermochromic writing instrument 1 of the first to third embodiments and the friction tool 6 of the fourth embodiment.
On the outer surface of the top wall of the friction body 3, a friction portion 31 for rubbing the handwriting of the thermochromic ink on the paper surface is formed. An outer fitting portion 32 that fits with the protection member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The outer surface (friction portion 31) of the top wall of the friction body 3 has a convex curved surface, and the outer peripheral surface of the side wall of the friction body 3 has a straight shape (rectangular cylinder shape) or a tapered shape.
保護部材４は、頂壁と該頂壁に連設される筒状の側壁とからなる有底筒状体（例えば有底円筒体）である。前記保護部材４の側壁内周面には、摩擦体３の外側嵌合部３２と直接嵌合可能な内側嵌合部４１が形成される。
The protection member 4 is a bottomed tubular body (for example, a bottomed cylindrical body) including a top wall and a tubular side wall continuous with the top wall. An inner fitting portion 41 that can be directly fitted to the outer fitting portion 32 of the friction body 3 is formed on the inner peripheral surface of the side wall of the protection member 4.
前記摩擦体３の外側嵌合部３２はストレート状の外面（直円筒状の外面）からなり、前記保護部材４の内側嵌合部４１がストレート状の内面（直円筒状の内面）からなり、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とが着脱自在に圧入嵌合される。なお、本構成において、嵌合構造は、圧入嵌合（図９）以外にも、凹凸嵌合（図１０）、ネジ嵌合（図１１）を採用することもできる。前記摩擦体３の内方（即ち摩擦体３の突出方向と反対側）には、段部８が形成され、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とを嵌合させた際、前記段部８と前記保護部材４の開口端または前記段部８と前記保護部材４の内壁とが当接される。前記段部８は、熱変色性筆記具１の場合は、軸筒２または摩擦体３に形成され、摩擦具６の場合、本体７または摩擦体３に形成される。
The outer fitting portion 32 of the friction body 3 has a straight outer surface (right cylindrical outer surface), and the inner fitting portion 41 of the protection member 4 has a straight inner surface (right cylindrical inner surface). The outer fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4 are detachably press-fitted. In addition, in the present configuration, the fitting structure may employ concave-convex fitting (FIG. 10) or screw fitting (FIG. 11) in addition to press-fitting fitting (FIG. 9). A step portion 8 is formed on the inner side of the friction body 3 (that is, on the side opposite to the protruding direction of the friction body 3), and the outer fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4 are formed. When they are fitted together, the stepped portion 8 and the open end of the protection member 4 or the stepped portion 8 and the inner wall of the protection member 4 are brought into contact with each other. The step portion 8 is formed on the barrel 2 or the friction body 3 in the case of the thermochromic writing instrument 1, and is formed in the main body 7 or the friction body 3 in the case of the friction instrument 6.
前記保護部材４の内側嵌合部４１に軸方向の溝または突条４３が形成される。それにより、前記保護部材４の側壁の内周面と前記摩擦体３の外周面との間に、前記通気手段としての通気路が形成される。前記通気路により、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、保護部材４の内部と外部とを確実に連通させることができる。その結果、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、保護部材４の内部を加圧・減圧せず、保護部材４を摩擦体３にスムーズに着脱させることができる。
An axial groove or ridge 43 is formed in the inner fitting portion 41 of the protection member 4. Thereby, a ventilation passage as the ventilation means is formed between the inner peripheral surface of the side wall of the protection member 4 and the outer peripheral surface of the friction body 3. By means of the air passage, when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the inside and outside of the protection member 4 can be surely communicated with each other. As a result, when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are attached / detached, the protection member 4 is smoothly attached / detached to / from the friction body 3 without pressurizing / depressurizing the inside of the protection member 4. be able to.
また、本構成は、摩擦体非使用時、通気手段を備えたにもかかわらず、摩擦体３を、頂壁や側壁に通気孔を備えない有底筒状体の保護部材４で覆うことができ、保護部材４の内部に塵や埃の侵入を防ぎ、より一層、摩擦体３の汚れを回避できる。
Further, in the present configuration, when the friction body is not used, the friction body 3 can be covered with the bottomed cylindrical protection member 4 having no ventilation hole on the top wall or the side wall, although the ventilation means is provided. Therefore, it is possible to prevent dust and dirt from entering the inside of the protection member 4, and to further prevent the friction body 3 from being soiled.
＜摩擦体と保護部材の第７の構成＞
図１５に摩擦体３と保護部材４の第７の構成を示す。本構成は、第１乃至第３の実施の形態の熱変色性筆記具１及び第４の実施の形態の摩擦具６に採用される。
摩擦体３の頂壁外面には、紙面上の熱変色性インキの筆跡を摩擦する摩擦部３１が形成される。前記摩擦部３１の側壁外周面には、保護部材４と嵌合される外側嵌合部３２が形成される。摩擦体３の頂壁外面（摩擦部３１）は凸曲面となり、摩擦体３の側壁外周面はストレート状（直円筒状）またはテーパー状となっている。
<Seventh Structure of Friction Body and Protective Member>
FIG. 15 shows a seventh configuration of the friction body 3 and the protection member 4. This configuration is adopted in the thermochromic writing instrument 1 of the first to third embodiments and the friction tool 6 of the fourth embodiment.
On the outer surface of the top wall of the friction body 3, a friction portion 31 for rubbing the handwriting of the thermochromic ink on the paper surface is formed. An outer fitting portion 32 that fits with the protection member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The outer surface (friction portion 31) of the top wall of the friction body 3 has a convex curved surface, and the outer peripheral surface of the side wall of the friction body 3 has a straight shape (rectangular cylinder shape) or a tapered shape.
保護部材４は、頂壁と該頂壁に連設される筒状の側壁とからなる有底筒状体（例えば有底円筒体）である。前記保護部材４の側壁内周面には、摩擦体３の外側嵌合部３２と直接嵌合可能な内側嵌合部４１が形成される。
The protection member 4 is a bottomed tubular body (for example, a bottomed cylindrical body) including a top wall and a tubular side wall continuous with the top wall. An inner fitting portion 41 that can be directly fitted to the outer fitting portion 32 of the friction body 3 is formed on the inner peripheral surface of the side wall of the protection member 4.
前記摩擦体３の外側嵌合部３２はストレート状の外面（直円筒状の外面）からなり、前記保護部材４の内側嵌合部４１がストレート状の内面（直円筒状の内面）からなり、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とが着脱自在に圧入嵌合される。なお、本構成において、嵌合構造は、圧入嵌合（図９）以外にも、凹凸嵌合（図１０）、ネジ嵌合（図１１）を採用することもできる。前記摩擦体３の内方（即ち摩擦体３の突出方向と反対側）には、段部８が形成され、前記摩擦体３の外側嵌合部３２と前記保護部材４の内側嵌合部４１とを嵌合させた際、前記段部８と前記保護部材４の開口端または前記段部８と前記保護部材４の内壁とが当接される。前記段部８は、熱変色性筆記具１の場合は、軸筒２または摩擦体３に形成され、摩擦具６の場合、本体７または摩擦体３に形成される。
The outer fitting portion 32 of the friction body 3 has a straight outer surface (right cylindrical outer surface), and the inner fitting portion 41 of the protection member 4 has a straight inner surface (right cylindrical inner surface). The outer fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4 are detachably press-fitted. In addition, in the present configuration, the fitting structure may employ concave-convex fitting (FIG. 10) or screw fitting (FIG. 11) in addition to press-fitting fitting (FIG. 9). A step portion 8 is formed on the inner side of the friction body 3 (that is, on the side opposite to the protruding direction of the friction body 3), and the outer fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4 are formed. When they are fitted together, the stepped portion 8 and the open end of the protection member 4 or the stepped portion 8 and the inner wall of the protection member 4 are brought into contact with each other. The step portion 8 is formed on the barrel 2 or the friction body 3 in the case of the thermochromic writing instrument 1, and is formed in the main body 7 or the friction body 3 in the case of the friction instrument 6.
前記摩擦体３の外側嵌合部３２には、軸方向の溝または突条３３が形成される。それにより、前記保護部材４の側壁の内周面と前記摩擦体３の外周面との間に、前記通気手段としての通気路が形成される。前記通気路により、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、保護部材４の内部と外部とを確実に連通させることができる。その結果、前記保護部材４の内周面と前記摩擦体３の外周面とを着脱する際、保護部材４の内部を加圧・減圧せず、保護部材４を摩擦体３にスムーズに着脱させることができる。
An axial groove or ridge 33 is formed in the outer fitting portion 32 of the friction body 3. Thereby, a ventilation passage as the ventilation means is formed between the inner peripheral surface of the side wall of the protection member 4 and the outer peripheral surface of the friction body 3. By means of the air passage, when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the inside and outside of the protection member 4 can be surely communicated with each other. As a result, when the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are attached / detached, the protection member 4 is smoothly attached / detached to / from the friction body 3 without pressurizing / depressurizing the inside of the protection member 4. be able to.
また、本構成は、摩擦体非使用時、通気手段を備えたにもかかわらず、摩擦体３を、頂壁や側壁に通気孔を備えない有底筒状体の保護部材４で覆うことができ、保護部材４の内部に塵や埃の侵入を防ぎ、より一層、摩擦体３の汚れを回避できる。
Further, in the present configuration, when the friction body is not used, the friction body 3 can be covered with the bottomed cylindrical protection member 4 having no ventilation hole on the top wall or the side wall, although the ventilation means is provided. Therefore, it is possible to prevent dust and dirt from entering the inside of the protection member 4, and to further prevent the friction body 3 from being soiled.
