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 used, when the user's fingertip contacts the friction body, or when the thermochromic writing instrument is stored and stored in a storage body (for example, a pen case, a pen stand, or a clothes pocket). When the inner surface of the storage 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) comes into contact with the friction body, dirt or dust adheres to the surface of the friction body. When the surface is soiled and the paper surface is rubbed with a dirty friction body, the paper surface 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、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 is intended to provide a thermochromic writing instrument and a friction tool capable of avoiding contamination of the friction body 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、前記摩擦体３の頂部に取付孔３２を設け、前記摩擦体３の取付孔３２内面と着脱自在に嵌合する保護部材４を備え、前記摩擦体３の取付孔３２内面に前記保護部材４が嵌合した状態において、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。
The first invention of the present application is a low-abrasion elastic that can rub the pen tip 21 capable of discharging the thermochromic ink and the handwriting of the thermochromic ink and thermally change the handwriting by frictional heat generated at that time. A thermochromic writing instrument provided with a friction body 3 made of a material, provided with a mounting hole 32 at the top of the friction body 3, and a protective member 4 detachably fitted to the inner surface of the mounting hole 32 of the friction body 3. And the top of the protection member 4 is positioned more outward than the top of the friction body 3 in a state where the protection member 4 is fitted to the inner surface of the mounting hole 32 of the friction body 3. To do.
前記第１の発明の熱変色性筆記具１は、前記摩擦体３の頂部に取付孔３２を設け、前記摩擦体３の取付孔３２内面と着脱自在に嵌合する保護部材４を備え、前記摩擦体３の取付孔３２内面に前記保護部材４が嵌合した状態において、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 includes a protective member 4 provided with a mounting hole 32 at the top of the friction body 3 and removably fitted to the inner surface of the mounting hole 32 of the friction body 3. In a state where the protective member 4 is fitted to the inner surface of the mounting hole 32 of the body 3, the top of the protective member 4 is positioned outward (that is, outward in the direction in which the friction body protrudes) than the top of the friction body 3. By this, when the friction body is not used, contact with the fingertip of the user and contact between the friction body 3 and 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 the clothes) can be avoided. It is possible to prevent dirt, dust and the like from adhering to the friction body 3 (that is, the friction body is soiled).
また、本願の第１の発明は、前記保護部材４と前記摩擦体３の取付孔３２内面とが着脱自在に嵌合（即ち直接嵌合）してなることにより、摩擦体非使用時、保護部材４と、低摩耗性の弾性材料からなる摩擦体３の取付孔３２内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と前記摩擦体３の取付孔３２内面との嵌合は、例えば、圧入嵌合、凹凸嵌合、ネジ嵌合等が挙げられる。
Further, the first invention of the present application is configured such that the protective member 4 and the inner surface of the mounting hole 32 of the friction body 3 are detachably fitted (that is, directly fitted), thereby protecting the friction body when not in use. A stable fitting state between the member 4 and the inner surface of the mounting hole 32 of the friction body 3 made of a low-abrasion elastic material can be maintained, and the protection member 4 can be prevented from inadvertently falling off the friction body 3. Examples of the fitting between the protective member 4 and the inner surface of the attachment hole 32 of the friction body 3 include press fitting, uneven fitting, and screw fitting.
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、取付孔３２内面と嵌合するロッド部４１と、該ロッド部４１と連設され且つ該ロッド部４１の外径より大きい外径を有する頂壁４２とを備えることを要件とする。
According to a second invention of the present application, in the thermochromic writing instrument 1 of the first invention, the protection member 4 is connected to the inner surface of the mounting hole 32, the rod part 41 is connected to the rod part 41, and the It is necessary to provide a top wall 42 having an outer diameter larger than the outer diameter of the rod portion 41.
前記第２の発明の熱変色性筆記具１は、前記保護部材４が、取付孔３２内面と嵌合するロッド部４１と、該ロッド部４１と連設され且つ該ロッド部４１の外径より大きい外径を有する頂壁４２とを備えることにより、前記摩擦体３の取付孔３２内面に前記ロッド部４１が嵌合された状態において、前記頂壁４２が摩擦体３の頂部よりも外方に位置してなる。それにより、保護部材４を着脱する際に保護部材４の頂壁４２を把持でき、保護部材４の着脱が容易となり、しかも、保護部材４の頂壁４２により摩擦体３の頂部の汚れを一層防止できる。本発明で、前記ロッド部４１の外径とは、ロッド部４１の最大外径をいい、前記頂壁４２の外径とは、頂壁４２の最大外径をいう。前記頂壁４２の外径は、前記取付孔３２の開口部内径より大きく設定されることが好ましい。
In the thermochromic writing instrument 1 according to the second aspect of the invention, the protective member 4 has a rod portion 41 fitted to the inner surface of the mounting hole 32, and is connected to the rod portion 41 and larger than the outer diameter of the rod portion 41. By providing the top wall 42 having an outer diameter, the top wall 42 is more outward than the top of the friction body 3 when the rod portion 41 is fitted to the inner surface of the mounting hole 32 of the friction body 3. Be located. Accordingly, the top wall 42 of the protection member 4 can be gripped when the protection member 4 is attached / detached, and the attachment / detachment of the protection member 4 is facilitated. Further, the top wall 42 of the protection member 4 further stains the top of the friction body 3. Can be prevented. In the present invention, the outer diameter of the rod portion 41 refers to the maximum outer diameter of the rod portion 41, and the outer diameter of the top wall 42 refers to the maximum outer diameter of the top wall 42. The outer diameter of the top wall 42 is preferably set larger than the inner diameter of the opening of the mounting hole 32.
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が、前記頂壁４２と連設され且つ摩擦体３の外周面を包囲する筒状の側壁４３を備えることを要件とする。
According to a third invention of the present application, in the thermochromic writing instrument 1 of the second invention, the protective member 4 is connected to the top wall 42 and surrounds the outer peripheral surface of the friction body 3. It is a requirement to have
前記第３の発明の熱変色性筆記具１は、前記保護部材４が、前記頂壁４２と連設され且つ摩擦体３の外周面を包囲する筒状の側壁４３を備えることにより、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。また、前記第３の発明の熱変色性筆記具１は、保護部材４を着脱する際に保護部材４の筒状の側壁４３を把持でき、保護部材４の着脱を容易に行うことができる。
In the thermochromic writing instrument 1 according to the third aspect of the invention, the protective member 4 includes a cylindrical side wall 43 that is connected to the top wall 42 and surrounds the outer peripheral surface of the friction body 3. During use, contact between the user's fingertips and the friction body 3 and 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 the clothes) can be reliably avoided, and the friction body 3 can become dirty. It can be surely prevented. Further, the thermochromic writing instrument 1 of the third invention can grip the cylindrical side wall 43 of the protection member 4 when the protection member 4 is attached and detached, and can easily attach and detach the protection member 4.
本願の第４の発明は、前記第１乃至第３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。
According to a fourth invention of the present application, in the thermochromic writing instrument 1 of the first to third inventions, a thermochromic ink is accommodated in the shaft tube 2, and the thermochromic ink is disposed at a front end of the shaft tube 2. Is provided with a pen tip 21 that can discharge the ink and the friction body 3 is provided at the rear end of the shaft cylinder 2.
前記第４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 according to the fourth aspect of the present invention includes the friction body 3 at the rear end of the shaft tube 2, it can be written using the nib 21 with the friction body 3 protected by the protection member 4. Only when the friction body 3 is used, the protective member 4 can be removed from the friction body 3 and used, and contamination of the friction body 3 when not in use can be avoided as much as possible.
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。
According to a fifth invention of the present application, in the thermochromic writing instrument 1 of the fourth invention, a writing body is accommodated in the shaft tube 2 so as to be movable in the front-rear direction, and a thermochromic ink is contained in the writing body. A pen nib 21 that accommodates and is capable of discharging the thermochromic ink at the front end of the cursive body, an operating portion 22 is provided in the shaft cylinder 2, and the pen tip of the cursive body is operated by operating the operating portion 22. It is a requirement that 21 is configured to be able to protrude and retract from the front end hole of the shaft cylinder 2.
前記第５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 fifth aspect of the present invention can provide a retractable thermochromic writing instrument 1 that can avoid contamination of the friction body 3 when not in use as much as possible.
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。
6th invention of this application WHEREIN: In the thermochromic writing instrument 1 of the said 4th invention, The cap 5 attached to the front outer surface and the rear outer surface of the said axial cylinder 2 is attached detachably, On the inner surface of the said cap 5, A rear insertion fitting portion 51 in which the inner surface of the cap 5 and the rear outer surface of the shaft cylinder 2 are fitted is provided, and the inner diameter of the rear insertion fitting portion 51 on the inner surface of the cap 5 is formed larger than the outer diameter of the protection member 4. Is a requirement.
前記第６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。本発明で保護部材４の外径とは、保護部材４の最大外径をいう。
In the thermochromic writing instrument 1 according to the sixth aspect of the invention, the cap 5 is attached to the rear portion of the shaft cylinder 2 by forming the inner diameter of the back fitting portion 51 of the cap 5 larger than the outer diameter of the protective member 4. At that time (that is, when the cap is inserted backward), the protective member 4 does not block the insertion of the cap 5, and a smooth cap attachment is possible. In the present invention, the outer diameter of the protective member 4 refers to the maximum outer diameter of the protective member 4.
本願の第７の発明は、前記第１乃至第３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。
According to a seventh invention of the present application, in the thermochromic writing instrument 1 of the first to third inventions, a thermochromic ink is accommodated in the shaft tube 2, and the thermochromic ink is disposed at a front end of the shaft tube 2. It is a requirement that a pen tip 21 capable of discharging is provided, a cap 5 is detachably mounted on the front outer surface of the shaft cylinder 2, and the friction body 3 is provided on the outer top surface of the cap 5.
前記第７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 seventh invention comprises the friction body 3 on the top outer surface of the cap 5, the pen 5 is removed with the cap 5 removed from the pen tip side and covered with the protection member 4. 21, 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１乃至第７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 eighth invention of the present application is characterized in that, in the thermochromic writing instrument 1 of the first to seventh inventions, the removed protective member 4 is detachably provided in a portion other than the friction body.
前記第８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、キャップ、操作部、クリップ等が挙げられる。
The thermochromic writing instrument 1 according to the eighth aspect of the invention can prevent the protection member 4 removed from the friction body side from being lost. Examples of the part other than the friction body include a shaft tube, a cap, an operation unit, and a clip.
本願の第９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を備えた摩擦具であって、前記摩擦体３の頂部に取付孔３２を設け、前記摩擦体３の取付孔３２内面と着脱自在に嵌合する保護部材４を備え、前記摩擦体３の取付孔３２内面に前記保護部材４が嵌合した状態において、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。
The ninth invention of the present application is a friction comprising a friction body 3 made of a low-abrasion elastic material capable of rubbing an image or handwriting of thermochromic ink and heat-discoloring the image or handwriting by the frictional heat generated at that time. An attachment hole 32 is provided at the top of the friction body 3, and the protection member 4 is detachably fitted to the inner surface of the attachment hole 32 of the friction body 3, and is provided on the inner surface of the attachment hole 32 of the friction body 3. It is a requirement that the top portion of the protection member 4 is located outward from the top portion of the friction body 3 in a state where the protection member 4 is fitted.
前記第９の発明の摩擦具６は、前記摩擦体３の頂部に取付孔３２を設け、前記摩擦体３の取付孔３２内面と着脱自在に嵌合する保護部材４を備え、前記摩擦体３の取付孔３２内面に前記保護部材４が嵌合した状態において、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 friction tool 6 of the ninth invention includes a protective member 4 provided with a mounting hole 32 at the top of the friction body 3 and detachably fitted to the inner surface of the mounting hole 32 of the friction body 3. When the protective member 4 is fitted to the inner surface of the mounting hole 32, the top of the protective member 4 is positioned outward (that is, outward in the friction body protruding direction) from the top of the friction body 3. When the friction body is not used, contact with the user's fingertips and contact between the friction body 3 and 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 the clothes) can be avoided. It is possible to prevent dirt, dust and the like from adhering to 3 (that is, the friction body is soiled).
また、本願の第９の発明の摩擦具６は、前記保護部材４と前記摩擦体３の取付孔３２内面とが着脱自在に嵌合（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と、低摩耗性の弾性材料からなる摩擦体３の取付孔３２内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と前記摩擦体３の取付孔３２内面との嵌合は、例えば、圧入嵌合、凹凸嵌合、ネジ嵌合等が挙げられる。
Further, the friction tool 6 of the ninth invention of the present application is configured such that the protective member 4 and the inner surface of the attachment hole 32 of the friction body 3 are detachably fitted (direct fitting), so that the friction body is not used. At this time, a stable fitting state between the cylindrical protection member 4 and the inner surface of the attachment hole 32 of the friction body 3 made of a low wear elastic material can be maintained, and the protection member 4 is carelessly dropped from the friction body 3. Can be prevented. Examples of the fitting between the protective member 4 and the inner surface of the attachment hole 32 of the friction body 3 include press fitting, uneven fitting, and screw fitting.
本願の第１０の発明は、前記第９の発明の摩擦具６において、前記保護部材４が、取付孔３２内面と嵌合するロッド部４１と、該ロッド部４１と連設され且つ該ロッド部４１の外径より大きい外径を有する頂壁４２とを備えることを要件とする。
According to a tenth aspect of the present invention, in the friction device 6 according to the ninth aspect, the protection member 4 is connected to the inner surface of the mounting hole 32, the rod portion 41 is connected to the rod portion 41, and the rod portion. And a top wall 42 having an outer diameter larger than the outer diameter of 41.
前記第１０の発明の摩擦具６は、前記保護部材４が、取付孔３２内面と嵌合するロッド部４１と、該ロッド部４１と連設され且つ該ロッド部４１の外径より大きい外径を有する頂壁４２とを備えることにより、前記摩擦体３の取付孔３２内面に前記ロッド部４１が嵌合された状態において、前記頂壁４２が摩擦体３の頂部よりも外方に位置してなる。それにより、保護部材４を着脱する際に保護部材４の頂壁４２を把持でき、保護部材４の着脱が容易となり、しかも、保護部材４の頂壁４２により摩擦体３の頂部の汚れを一層防止できる。本発明で、前記ロッド部４１の外径とは、ロッド部４１の最大外径をいい、前記頂壁４２の外径とは、頂壁４２の最大外径をいう。前記頂壁４２の外径は、前記取付孔３２の開口部内径より大きく設定されることが好ましい。
In the friction tool 6 of the tenth aspect of the invention, the protective member 4 has a rod portion 41 fitted to the inner surface of the mounting hole 32, an outer diameter that is connected to the rod portion 41 and is larger than the outer diameter of the rod portion 41. The top wall 42 is positioned outward from the top of the friction body 3 in a state where the rod portion 41 is fitted to the inner surface of the mounting hole 32 of the friction body 3. It becomes. Accordingly, the top wall 42 of the protection member 4 can be gripped when the protection member 4 is attached / detached, and the attachment / detachment of the protection member 4 is facilitated. Further, the top wall 42 of the protection member 4 further stains the top of the friction body 3. Can be prevented. In the present invention, the outer diameter of the rod portion 41 refers to the maximum outer diameter of the rod portion 41, and the outer diameter of the top wall 42 refers to the maximum outer diameter of the top wall 42. The outer diameter of the top wall 42 is preferably set larger than the inner diameter of the opening of the mounting hole 32.
本願の第１１の発明は、前記第１０の発明の摩擦具６において、前記保護部材４が、前記頂壁４２と連設され且つ摩擦体３の外周面を包囲する筒状の側壁４３を備えることを要件とする。
According to an eleventh aspect of the present invention, in the friction device 6 according to the tenth aspect, the protective member 4 includes a cylindrical side wall 43 that is connected to the top wall 42 and surrounds the outer peripheral surface of the friction body 3. Is a requirement.
前記第１１の発明の摩擦具６は、前記保護部材４が、前記頂壁４２と連設され且つ摩擦体３の外周面を包囲する筒状の側壁４３を備えることにより、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。また、前記第１１の発明の摩擦具６は、保護部材４を着脱する際に保護部材４の筒状の側壁４３を把持でき、保護部材４の着脱を容易に行うことができる。
In the friction tool 6 of the eleventh aspect of the invention, the protection member 4 includes a cylindrical side wall 43 that is connected to the top wall 42 and surrounds the outer peripheral surface of the friction body 3, so that the friction body is not used. , It is possible to reliably avoid contact between the user's fingertips and the friction body 3 and 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), and ensure that the friction body 3 becomes dirty. Can be prevented. In addition, the friction tool 6 of the eleventh aspect of the invention can grip the cylindrical side wall 43 of the protection member 4 when attaching or detaching the protection member 4, and can easily attach or detach the protection member 4.
本願の第１２の発明は、前記第９乃至第１１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。
According to a twelfth aspect of the present invention, in the friction tool 6 of the ninth to eleventh aspects, the removed protection member 4 is detachably provided at a portion other than the friction body.
前記第１２の発明の摩擦具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 twelfth 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 constituting the friction body 3 is preferably a synthetic resin (rubber or elastomer) having elasticity. For example, silicone resin, SBS resin (styrene-butadiene-styrene copolymer), SEBS resin (styrene) -Ethylene-butylene-styrene copolymer), fluorine resin, chloroprene resin, nitrile resin, polyester resin, ethylene propylene diene rubber (EPDM) and the like. The synthetic resin having elasticity is not made of a highly wearable elastic material (such as an eraser), but is made of a low wear elastic material that hardly generates wear debris during friction. In the present invention, the protective member 4 is preferably composed of a 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 is discolored or decolored 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 avoid contamination of the friction body 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 avoid contamination of the friction body 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、及び図８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（図示せず）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３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。
<Thermochromic writing instrument of the first embodiment>
1 to 3 and 8 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 of the present embodiment includes a shaft tube 2, a writing body (not shown) accommodated in the shaft tube 2 so as to be movable in the front-rear direction, and a pen tip 21 of the writing body. The operation unit 22 is made to protrude and retract from the front end hole of the cylinder 2, the friction body 3 is provided at the rear end of the shaft cylinder 2, and the protection member 4 is detachably attached to the friction body 3. A thermochromic ink is accommodated in the cursive body, and a nib 21 capable of discharging the thermochromic ink is provided at the front end of the cursive 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 operation portion 22 (clip) that can move in the front-rear direction from the rear side wall of the shaft tube 2 is projected outward in the radial direction, and the operation portion 22 is slid forward. A retracting mechanism (side slide type retracting mechanism) is provided that allows the pen tip 21 of the writing body to be retracted from the front end hole of the barrel 2 by operation.
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 has a rear-end knock type in which the pen tip protrudes and retracts by pressing the operating portion provided at the rear end of the shaft tube forward, and the operation portion protruding from the outer surface of the shaft tube side wall inward in the radial direction. A side knock type in which the pen tip appears and disappears by pressing the button, and a rotary type in which the pen tip appears and disappears by rotating the operation part at the rear of the shaft cylinder.
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。前記摩擦体３の頂壁の中心部には取付孔３２が設けられる。
A friction body 3 made of a low-abrasion 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 rearward of the rear end of the shaft cylinder 2. Protruding. The outer surface of the top wall of the friction body 3 is planar, the outer surface of the side wall of the friction body 3 is straight (right cylindrical) or tapered, and the gap 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 planar 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. A mounting hole 32 is provided at the center of the top wall of the friction body 3.
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）からなる。前記保護部材４は、ロッド部４１と、該ロッド部４１と連設される頂壁４２と、該頂壁４２に連設され且つ前記ロッド部４１を包囲する筒状の側壁４３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のスムーズな着脱を得るために、前記筒状の側壁４３と摩擦体３とは非接触状態が維持されることが好ましいが、両者は僅かに接触してもよい。前記保護部材４のロッド部４１の外面が、摩擦体３の取付孔３２内面と着脱自在に圧入嵌合される。前記嵌合構造は、圧入嵌合以外に、例えば、凹凸嵌合（図１０）、ネジ嵌合（図１１）等を採用することができる。
The protective member 4 is made of a synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.). The protective member 4 has one end including a rod portion 41, a top wall 42 that is continuous with the rod portion 41, and a cylindrical side wall 43 that is continuous with the top wall 42 and surrounds the rod portion 41. Is a bottomed cylindrical body (for example, a bottomed cylindrical body) opened. In order to obtain smooth attachment and detachment of the protective member 4, it is preferable that the cylindrical side wall 43 and the friction body 3 are maintained in a non-contact state, but both may be slightly in contact with each other. The outer surface of the rod portion 41 of the protection member 4 is press-fitted and detachably fitted to the inner surface of the attachment hole 32 of the friction body 3. The fitting structure can employ, for example, concave-convex fitting (FIG. 10), screw fitting (FIG. 11), etc., in addition to press-fitting fitting.
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の取付孔３２内面に前記保護部材４のロッド部４１外面を嵌合させた際、前記段部８と前記保護部材４の側壁４３端部または前記段部８と前記保護部材４の側壁４３内面とが当接される。前記段部８は、軸筒２または摩擦体３に形成される。
A step 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 surface of the rod portion 41 of the protection member 4 is fitted to the inner surface of the attachment hole 32 of the friction body 3. When combined, the step portion 8 and the end portion of the side wall 43 of the protection member 4 or the step portion 8 and the inner surface of the side wall 43 of the protection member 4 are brought into contact with each other. The step portion 8 is formed on the shaft cylinder 2 or the friction body 3.
本実施の形態の熱変色性筆記具１は、前記摩擦体３の頂部に取付孔３２を設け、前記摩擦体３の取付孔３２内面と着脱自在に嵌合する保護部材４を備え、前記摩擦体３の取付孔３２内面に前記保護部材４が嵌合された状態において、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 present embodiment includes a protective member 4 provided with a mounting hole 32 at the top of the friction body 3 and detachably fitted to the inner surface of the mounting hole 32 of the friction body 3. 3, the top of the protection member 4 is located outside the top of the friction body 3 (that is, outward in the direction in which the friction body protrudes). By this, when the friction body is not used, contact with the fingertip of the user and contact between the friction body 3 and 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 the clothes) can be avoided. It is possible to prevent dirt, dust and the like from adhering to the friction body 3 (that is, the friction body is soiled).
また、本実施の形態の熱変色性筆記具１は、前記保護部材４と前記摩擦体３の取付孔３２内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、保護部材４と、低摩耗性の弾性材料からなる摩擦体３の取付孔３２内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 is configured such that the protective member 4 and the inner surface of the attachment hole 32 of the friction body 3 are detachably directly fitted, so that the protection member can be used when the friction body is not used. 4 and the inner surface of the attachment hole 32 of the friction body 3 made of a low-abrasion elastic material can be kept in a stable fitting state, and the protective member 4 can be prevented from inadvertently falling off the friction body 3.
また、本実施の形態の熱変色性筆記具１は、前記保護部材４が、取付孔３２内面と嵌合するロッド部４１と、該ロッド部４１と連設され且つロッド部４１の外径より大きい外径を有する頂壁４２とを備えることにより、保護部材４を着脱する際に保護部材４の頂壁４２を把持でき、保護部材４の着脱が容易となり、しかも、保護部材４の頂壁４２により摩擦体３の頂部の汚れを一層防止できる。
Further, in the thermochromic writing instrument 1 of the present embodiment, the protective member 4 is connected to the inner surface of the mounting hole 32, the rod portion 41 is connected to the rod portion 41, and is larger than the outer diameter of the rod portion 41. By providing the top wall 42 having an outer diameter, the top wall 42 of the protection member 4 can be gripped when the protection member 4 is attached and detached, and the protection member 4 can be easily attached and detached. As a result, contamination of the top of the friction body 3 can be further prevented.
また、本実施の形態の熱変色性筆記具１は、前記保護部材４が、前記頂壁４２と連設され且つ摩擦体３の外周面を包囲する筒状の側壁４３を備えることにより、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。また、本実施の形態の熱変色性筆記具１は、保護部材４を着脱する際に保護部材４の筒状の側壁４３を把持でき、保護部材４の着脱が容易に行うことができる。
In addition, the thermochromic writing instrument 1 of the present embodiment includes the protective member 4 having a cylindrical side wall 43 that is connected to the top wall 42 and surrounds the outer peripheral surface of the friction body 3. When not in use, contact between the user's fingertip or the friction body 3 and 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 the clothes) can be reliably avoided, and the friction body 3 becomes dirty. Can be reliably prevented. Moreover, the thermochromic writing instrument 1 of the present embodiment can grip the cylindrical side wall 43 of the protective member 4 when the protective member 4 is attached and detached, and the protective member 4 can be easily attached and detached.
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。
In addition, since the thermochromic writing instrument 1 of the present embodiment includes the friction body 3 at the rear end of the shaft tube 2, it can be written with the pen tip 21 in a state where the friction body 3 is covered with the protective member 4. Only when the friction body 3 is used, the protective member 4 can be removed from the friction body 3 and used, and contamination 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）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３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。前記摩擦体係止部２３は、ロッド部４１が嵌合可能な係止孔を備える。また、前記摩擦体係止部２３は、保護部材４が有底筒状体からなる場合、保護部材４の側壁４３内に収容可能な突出壁部を備える。
Further, in the thermochromic writing instrument 1 of the present embodiment, the protective member 4 removed from the friction body 3 is detachably provided at a portion (for example, a shaft tube, an operation unit) other than the friction body. Specifically, in the present embodiment, a frictional body locking portion 23 is provided on the side wall of the shaft tube 2, and the frictional body 3 is temporarily locked to the frictional body locking portion 23 when the frictional body is used. The Thereby, loss of the protection member 4 removed from the friction body 3 can be prevented. The friction body locking portion 23 includes a locking hole into which the rod portion 41 can be fitted. Moreover, the said friction body latching | locking part 23 is provided with the protrusion wall part which can be accommodated in the side wall 43 of the protection member 4, when the protection member 4 consists of a bottomed cylindrical body.
＜第２の実施の形態の熱変色性筆記具＞
図３乃至図５、及び図８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３に着脱自在に装着される保護部材４とからなる。
<Thermochromic writing instrument of the second embodiment>
3 to 5 and 8 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.
The thermochromic writing instrument 1 of the present embodiment includes a shaft cylinder 2 containing thermochromic ink therein, a pen tip 21 provided at the front end of the shaft cylinder 2 and capable of discharging the thermochromic ink, A friction body 3 provided at the rear end of the shaft cylinder 2, a cap 5 detachably mounted on the pen tip side of the shaft cylinder 2, and a protective member 4 detachably mounted on the friction body 3. Consists of.
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。前記摩擦体３の頂壁の中心部には取付孔３２が設けられる。
A friction body 3 made of a low-abrasion 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 rearward of the rear end of the shaft cylinder 2. Protruding. The outer surface of the top wall of the friction body 3 is planar, the outer surface of the side wall of the friction body 3 is straight (right cylindrical) or tapered, and the gap 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 planar 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. A mounting hole 32 is provided at the center of the top wall of the friction body 3.
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）からなる。前記保護部材４は、ロッド部４１と、該ロッド部４１と連設される頂壁４２と、該頂壁４２に連設され且つ前記ロッド部４１を包囲する筒状の側壁４３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のスムーズな着脱を得るために、前記筒状の側壁４３と摩擦体３とは非接触状態が維持されることが好ましいが、両者は僅かに接触してもよい。前記保護部材４のロッド部４１の外面が、摩擦体３の取付孔３２内面と着脱自在に圧入嵌合される。前記嵌合構造は、圧入嵌合以外に、例えば、凹凸嵌合（図１０）、ネジ嵌合（図１１）等を採用することができる。
The protective member 4 is made of a synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.). The protective member 4 has one end including a rod portion 41, a top wall 42 that is continuous with the rod portion 41, and a cylindrical side wall 43 that is continuous with the top wall 42 and surrounds the rod portion 41. Is a bottomed cylindrical body (for example, a bottomed cylindrical body) opened. In order to obtain smooth attachment and detachment of the protective member 4, it is preferable that the cylindrical side wall 43 and the friction body 3 are maintained in a non-contact state, but both may be slightly in contact with each other. The outer surface of the rod portion 41 of the protection member 4 is press-fitted and detachably fitted to the inner surface of the attachment hole 32 of the friction body 3. The fitting structure can employ, for example, concave-convex fitting (FIG. 10), screw fitting (FIG. 11), etc., in addition to press-fitting fitting.
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の取付孔３２内面に前記保護部材４のロッド部４１外面を嵌合させた際、前記段部８と前記保護部材４の側壁４３端部または前記段部８と前記保護部材４の側壁４３内面とが当接される。前記段部８は、軸筒２または摩擦体３に形成される。
A step 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 surface of the rod portion 41 of the protection member 4 is fitted to the inner surface of the attachment hole 32 of the friction body 3. When combined, the step portion 8 and the end portion of the side wall 43 of the protection member 4 or the step portion 8 and the inner surface of the side wall 43 of the protection member 4 are brought into contact with each other. The step portion 8 is formed on the shaft cylinder 2 or the friction body 3.
本実施の形態の熱変色性筆記具１は、前記摩擦体３の頂部に取付孔３２を設け、前記摩擦体３の取付孔３２内面と着脱自在に嵌合する保護部材４を備え、前記摩擦体３の取付孔３２内面に前記保護部材４が嵌合された状態において、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 present embodiment includes a protective member 4 provided with a mounting hole 32 at the top of the friction body 3 and detachably fitted to the inner surface of the mounting hole 32 of the friction body 3. 3, the top of the protection member 4 is located outside the top of the friction body 3 (that is, outward in the direction in which the friction body protrudes). By this, when the friction body is not used, contact with the fingertip of the user and contact between the friction body 3 and 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 the clothes) can be avoided. It is possible to prevent dirt, dust and the like from adhering to the friction body 3 (that is, the friction body is soiled).
また、本実施の形態の熱変色性筆記具１は、前記保護部材４と前記摩擦体３の取付孔３２内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、保護部材４と、低摩耗性の弾性材料からなる摩擦体３の取付孔３２内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 is configured such that the protective member 4 and the inner surface of the attachment hole 32 of the friction body 3 are detachably directly fitted, so that the protection member can be used when the friction body is not used. 4 and the inner surface of the attachment hole 32 of the friction body 3 made of a low-abrasion elastic material can be kept in a stable fitting state, and the protective member 4 can be prevented from inadvertently falling off the friction body 3.
また、本実施の形態の熱変色性筆記具１は、前記保護部材４が、取付孔３２内面と嵌合するロッド部４１と、該ロッド部４１と連設され且つロッド部４１の外径より大きい外径を有する頂壁４２とを備えることにより、保護部材４を着脱する際に保護部材４の頂壁４２を把持でき、保護部材４の着脱が容易となり、しかも、保護部材４の頂壁４２により摩擦体３の頂部の汚れを一層防止できる。
Further, in the thermochromic writing instrument 1 of the present embodiment, the protective member 4 is connected to the inner surface of the mounting hole 32, the rod portion 41 is connected to the rod portion 41, and is larger than the outer diameter of the rod portion 41. By providing the top wall 42 having an outer diameter, the top wall 42 of the protection member 4 can be gripped when the protection member 4 is attached and detached, and the protection member 4 can be easily attached and detached. As a result, contamination of the top of the friction body 3 can be further prevented.
また、本実施の形態の熱変色性筆記具１は、前記保護部材４が、前記頂壁４２と連設され且つ摩擦体３の外周面を包囲する筒状の側壁４３を備えることにより、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。また、本実施の形態の熱変色性筆記具１は、保護部材４を着脱する際に保護部材４の筒状の側壁４３を把持でき、保護部材４の着脱が容易に行うことができる。
In addition, the thermochromic writing instrument 1 of the present embodiment includes the protective member 4 having a cylindrical side wall 43 that is connected to the top wall 42 and surrounds the outer peripheral surface of the friction body 3. When not in use, contact between the user's fingertip or the friction body 3 and 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 the clothes) can be reliably avoided, and the friction body 3 becomes dirty. Can be reliably prevented. Moreover, the thermochromic writing instrument 1 of the present embodiment can grip the cylindrical side wall 43 of the protective member 4 when the protective member 4 is attached and detached, and the protective member 4 can be easily attached and detached.
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。
In addition, since the thermochromic writing instrument 1 of the present embodiment includes the friction body 3 at the rear end of the shaft tube 2, it can be written with the pen tip 21 in a state where the friction body 3 is covered with the protective member 4. Only when the friction body 3 is used, the protective member 4 can be removed from the friction body 3 and used, and contamination of the friction body 3 when not in use can be avoided as much as possible.
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の内径を前記保護部材４の外径より大きく形成した。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。
The thermochromic writing instrument 1 of the present embodiment includes a cap 5 that 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 tube 2 are mounted on the inner surface of the cap 5. A rear insertion fitting portion 51 for fitting with the rear outer surface is provided, and the inner diameter of the rear insertion fitting portion 51 on the inner surface of the cap 5 is formed larger than the outer diameter of the protection member 4. Thereby, when the cap 5 is attached to the rear part of the shaft cylinder 2 (that is, when the cap is inserted backward), the protective member 4 does not obstruct the insertion of the cap 5 backward and smooth cap attachment is 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、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３からり取り外された保護部材４の紛失を防ぐことができる。前記摩擦体係止部５３は、ロッド部４１が嵌合可能な係止孔を備える。また、前記摩擦体係止部５３は、保護部材４が有底筒状体からなる場合、保護部材４の側壁４３内に収容可能な突出壁部を備える。
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 tube, a cap, a clip). Specifically, in the present embodiment, 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. . Thereby, the loss of the protection member 4 removed from the friction body 3 can be prevented. The friction body locking portion 53 includes a locking hole into which the rod portion 41 can be fitted. Moreover, the said frictional body latching | locking part 53 is provided with the protrusion wall part which can be accommodated in the side wall 43 of the protection member 4, when the protection member 4 consists of a bottomed cylindrical body.
＜第３の実施の形態の熱変色性筆記具＞
図６乃至図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３に着脱自在に装着される保護部材４とからなる。
<Thermochromic writing instrument of the third embodiment>
6 to 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.
The thermochromic writing instrument 1 of the present embodiment includes a shaft cylinder 2 containing thermochromic ink therein, a pen tip 21 provided at the front end of the shaft cylinder 2 and capable of discharging the thermochromic ink, A cap 5 that can be mounted on the pen tip side of the shaft cylinder 2 and a protective member 4 that is fixed to the top of the cap 5 and that is detachably mounted on the friction body 3.
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。前記摩擦体３の頂壁の中心部には取付孔３２が設けられる。
A friction body 3 made of a low-abrasion elastic material (for example, SBS resin, SEBS resin, silicone resin) is fixed to a friction body holding section 52 at the top of the cap 5, and the friction body 3 is attached to the top of the cap 5. It protrudes outward from the friction body holding part 52. The outer surface of the top wall of the friction body 3 is planar, the outer surface of the side wall of the friction body 3 is straight (right cylindrical) or tapered, and the gap 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 planar 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. A mounting hole 32 is provided at the center of the top wall of the friction body 3.
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）からなる。前記保護部材４は、ロッド部４１と、該ロッド部４１と連設される頂壁４２と、該頂壁４２に連設され且つ前記ロッド部４１を包囲する筒状の側壁４３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のスムーズな着脱を得るために、前記筒状の側壁４３と摩擦体３とは非接触状態が維持されることが好ましいが、両者は僅かに接触してもよい。前記保護部材４のロッド部４１の外面が、摩擦体３の取付孔３２内面と着脱自在に圧入嵌合される。前記嵌合構造は、圧入嵌合以外に、例えば、凹凸嵌合（図１０）、ネジ嵌合（図１１）を採用することができる。
The protective member 4 is made of a synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.). The protective member 4 has one end including a rod portion 41, a top wall 42 that is continuous with the rod portion 41, and a cylindrical side wall 43 that is continuous with the top wall 42 and surrounds the rod portion 41. Is a bottomed cylindrical body (for example, a bottomed cylindrical body) opened. In order to obtain smooth attachment and detachment of the protective member 4, it is preferable that the cylindrical side wall 43 and the friction body 3 are maintained in a non-contact state, but both may be slightly in contact with each other. The outer surface of the rod portion 41 of the protection member 4 is press-fitted and detachably fitted to the inner surface of the attachment hole 32 of the friction body 3. For the fitting structure, for example, a concave-convex fitting (FIG. 10) and a screw fitting (FIG. 11) can be adopted in addition to the press-fitting fitting.
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の取付孔３２内面に前記保護部材４のロッド部４１外面を嵌合させた際、前記段部８と前記保護部材４の側壁４３端部または前記段部８と前記保護部材４の側壁４３内面とが当接される。前記段部８は、軸筒２または摩擦体３に形成される。
A step 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 surface of the rod portion 41 of the protection member 4 is fitted to the inner surface of the attachment hole 32 of the friction body 3. When combined, the step portion 8 and the end portion of the side wall 43 of the protection member 4 or the step portion 8 and the inner surface of the side wall 43 of the protection member 4 are brought into contact with each other. The step portion 8 is formed on the shaft cylinder 2 or the friction body 3.
本実施の形態の熱変色性筆記具１は、前記摩擦体３の頂部に取付孔３２を設け、前記摩擦体３の取付孔３２内面と着脱自在に嵌合する保護部材４を備え、前記摩擦体３の取付孔３２内面に前記保護部材４が嵌合された状態において、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 present embodiment includes a protective member 4 provided with a mounting hole 32 at the top of the friction body 3 and detachably fitted to the inner surface of the mounting hole 32 of the friction body 3. 3, the top of the protection member 4 is located outside the top of the friction body 3 (that is, outward in the direction in which the friction body protrudes). By this, when the friction body is not used, contact with the fingertip of the user and contact between the friction body 3 and 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 the clothes) can be avoided. It is possible to prevent dirt, dust and the like from adhering to the friction body 3 (that is, the friction body is soiled).
また、本実施の形態の熱変色性筆記具１は、前記保護部材４と前記摩擦体３の取付孔３２内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、保護部材４と、低摩耗性の弾性材料からなる摩擦体３の取付孔３２内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 is configured such that the protective member 4 and the inner surface of the attachment hole 32 of the friction body 3 are detachably directly fitted, so that the protection member can be used when the friction body is not used. 4 and the inner surface of the attachment hole 32 of the friction body 3 made of a low-abrasion elastic material can be kept in a stable fitting state, and the protective member 4 can be prevented from inadvertently falling off the friction body 3.
また、本実施の形態の熱変色性筆記具１は、前記保護部材４が、取付孔３２内面と嵌合するロッド部４１と、該ロッド部４１と連設され且つロッド部４１の外径より大きい外径を有する頂壁４２とを備えることにより、保護部材４を着脱する際に保護部材４の頂壁４２を把持でき、保護部材４の着脱が容易となり、しかも、保護部材４の頂壁４２により摩擦体３の頂部の汚れを一層防止できる。
Further, in the thermochromic writing instrument 1 of the present embodiment, the protective member 4 is connected to the inner surface of the mounting hole 32, the rod portion 41 is connected to the rod portion 41, and is larger than the outer diameter of the rod portion 41. By providing the top wall 42 having an outer diameter, the top wall 42 of the protection member 4 can be gripped when the protection member 4 is attached and detached, and the protection member 4 can be easily attached and detached. As a result, contamination of the top of the friction body 3 can be further prevented.
また、本実施の形態の熱変色性筆記具１は、前記保護部材４が、前記頂壁４２と連設され且つ摩擦体３の外周面を包囲する筒状の側壁４３を備えることにより、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。また、本実施の形態の熱変色性筆記具１は、保護部材４を着脱する際に保護部材４の筒状の側壁４３を把持でき、保護部材４の着脱が容易に行うことができる。
In addition, the thermochromic writing instrument 1 of the present embodiment includes the protective member 4 having a cylindrical side wall 43 that is connected to the top wall 42 and surrounds the outer peripheral surface of the friction body 3. When not in use, contact between the user's fingertip or the friction body 3 and 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 the clothes) can be reliably avoided, and the friction body 3 becomes dirty. Can be reliably prevented. Moreover, the thermochromic writing instrument 1 of the present embodiment can grip the cylindrical side wall 43 of the protective member 4 when the protective member 4 is attached and detached, and the protective member 4 can be easily attached and detached.
また、本実施の形態の熱変色性筆記具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。
In addition, since the thermochromic writing instrument 1 of the present embodiment includes the friction body 3 on the top outer surface of the cap 5, the cap 5 is removed from the pen tip side, and the friction body 3 is covered with the protective member 4 in the pen state. Only when the friction body 3 is used, the protection member 4 can be detached from the friction body 3 and used, and contamination 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、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３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。前記摩擦体係止部２３は、ロッド部４１が嵌合可能な係止孔を備える。また、前記摩擦体係止部２３は、保護部材４が有底筒状体からなる場合、保護部材４の側壁４３内に収容可能な突出壁部を備える。
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 tube, a cap, a clip). Specifically, in the present embodiment, a frictional body locking portion 23 is provided at the rear end of the shaft cylinder 2, and the frictional body 3 is temporarily locked to the frictional body locking portion 23 when the friction body is used. Is done. Thereby, loss of the protection member 4 removed from the friction body 3 can be prevented. The friction body locking portion 23 includes a locking hole into which the rod portion 41 can be fitted. Moreover, the said friction body latching | locking part 23 is provided with the protrusion wall part which can be accommodated in the side wall 43 of the protection member 4, when the protection member 4 consists of a bottomed cylindrical body.
＜第４の実施の形態の摩擦具＞
図１２、図１３、及び図８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 Fourth Embodiment>
FIG. 12, FIG. 13 and FIG. 8 show a friction tool 6 according to a fourth embodiment of the present invention.
The friction tool 6 according to 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 that is 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。前記摩擦体３の頂壁の中心部には取付孔３２が設けられる。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-abrasion elastic material (for example, SBS resin, SEBS resin, silicone resin) is fixed to one end of the main body 7, and the friction body 3 protrudes outward from one end of the main body 7. The The outer surface of the top wall of the friction body 3 is planar, the outer surface of the side wall of the friction body 3 is straight (right cylindrical) or tapered, and the gap 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 planar 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. A mounting hole 32 is provided at the center of the top wall of the friction body 3. The shape of the main body 7 may be any shape as long as it can be gripped, such as a columnar shape, a cylindrical shape, or a rod shape.
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）からなる。前記保護部材４は、ロッド部４１と、該ロッド部４１と連設される頂壁４２と、該頂壁４２に連設され且つ前記ロッド部４１を包囲する筒状の側壁４３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のスムーズな着脱を得るために、前記筒状の側壁４３と摩擦体３とは非接触状態が維持されることが好ましいが、両者は僅かに接触してもよい。前記保護部材４のロッド部４１の外面が、摩擦体３の取付孔３２内面と着脱自在に圧入嵌合される。前記嵌合構造は、圧入嵌合以外に、例えば、凹凸嵌合（図１０）、ネジ嵌合（図１１）等を採用することができる。
The protective member 4 is made of a synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.). The protective member 4 has one end including a rod portion 41, a top wall 42 that is continuous with the rod portion 41, and a cylindrical side wall 43 that is continuous with the top wall 42 and surrounds the rod portion 41. Is a bottomed cylindrical body (for example, a bottomed cylindrical body) opened. In order to obtain smooth attachment and detachment of the protective member 4, it is preferable that the cylindrical side wall 43 and the friction body 3 are maintained in a non-contact state, but both may be slightly in contact with each other. The outer surface of the rod portion 41 of the protection member 4 is press-fitted and detachably fitted to the inner surface of the attachment hole 32 of the friction body 3. The fitting structure can employ, for example, concave-convex fitting (FIG. 10), screw fitting (FIG. 11), etc., in addition to press-fitting fitting.
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の取付孔３２内面に前記保護部材４のロッド部４１外面を嵌合させた際、前記段部８と前記保護部材４の側壁４３端部または前記段部８と前記保護部材４の側壁４３内面とが当接される。前記段部８は、本体７または摩擦体３に形成される。
A step 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 surface of the rod portion 41 of the protection member 4 is fitted to the inner surface of the attachment hole 32 of the friction body 3. When combined, the step portion 8 and the end portion of the side wall 43 of the protection member 4 or the step portion 8 and the inner surface of the side wall 43 of the protection member 4 are brought into contact with each other. The step 8 is formed on the main body 7 or the friction body 3.
本実施の形態の摩擦具６は、前記摩擦体３の頂部に取付孔３２を設け、前記摩擦体３の取付孔３２内面と着脱自在に嵌合する保護部材４を備え、前記摩擦体３の取付孔３２内面に前記保護部材４が嵌合された状態において、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 friction tool 6 of the present embodiment includes a protective member 4 that is provided with a mounting hole 32 at the top of the friction body 3 and that is detachably fitted to the inner surface of the mounting hole 32 of the friction body 3. When the protective member 4 is fitted to the inner surface of the mounting hole 32, the top of the protective member 4 is positioned outward (that is, outward in the direction in which the friction body protrudes) from the top of the friction body 3. When the friction body is not used, contact with the user's fingertips and contact between the friction body 3 and 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 the clothes) can be avoided. It is possible to prevent dirt, dust and the like from adhering to 3 (that is, the friction body is soiled).
また、本実施の形態の摩擦具６は、前記保護部材４と前記摩擦体３の取付孔３２内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、保護部材４と、低摩耗性の弾性材料からなる摩擦体３の取付孔３２内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 friction tool 6 of the present embodiment is configured such that the protective member 4 and the inner surface of the mounting hole 32 of the friction body 3 are directly detachably fitted, so that the protective member 4 In addition, a stable fitting state with the inner surface of the mounting hole 32 of the friction body 3 made of a low-abrasion elastic material can be maintained, and the protective member 4 can be prevented from inadvertently falling off the friction body 3.
また、本実施の形態の摩擦具６は、前記保護部材４が、取付孔３２内面と嵌合するロッド部４１と、該ロッド部４１と連設され且つロッド部４１の外径より大きい外径を有する頂壁４２とを備えることにより、保護部材４を着脱する際に保護部材４の頂壁４２を把持でき、保護部材４の着脱が容易となり、しかも、保護部材４の頂壁４２により摩擦体３の頂部の汚れを一層防止できる。
Further, in the friction tool 6 of the present embodiment, the protective member 4 has a rod portion 41 fitted to the inner surface of the mounting hole 32, an outer diameter that is connected to the rod portion 41 and is larger than the outer diameter of the rod portion 41. And the top wall 42 of the protection member 4 can be gripped when the protection member 4 is attached and detached, and the protection member 4 can be easily attached and detached. The contamination of the top of the body 3 can be further prevented.
また、本実施の形態の摩擦具６は、前記保護部材４が、前記頂壁４２と連設され且つ摩擦体３の外周面を包囲する筒状の側壁４３を備えることにより、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。また、本実施の形態の摩擦具は、保護部材４を着脱する際に保護部材４の筒状の側壁４３を把持でき、保護部材４の着脱が容易に行うことができる。
Further, the friction tool 6 according to the present embodiment is configured so that the protective member 4 includes a cylindrical side wall 43 that is connected to the top wall 42 and surrounds the outer peripheral surface of the friction body 3. At times, contact between the user's fingertips and the friction body 3 and 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) can be reliably avoided, and the friction body 3 can be surely soiled. Can be prevented. Moreover, the friction tool of this Embodiment can hold | grip the cylindrical side wall 43 of the protection member 4 when attaching / detaching the protection member 4, and can attach / detach the protection member 4 easily.
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、本体の他端、本体の側壁）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３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。前記摩擦体係止部７１は、ロッド部４１が嵌合可能な係止孔を備える。また、前記摩擦体係止部７３は、保護部材４が有底筒状体からなる場合、保護部材４の側壁４３内に収容可能な突出壁部を備える。
Further, in the friction tool 6 of the present embodiment, the protective member 4 removed from the friction body 3 is detachably provided at a portion other than the friction body (for example, the other end of the main body, the side wall of the main body). In the present embodiment, specifically, a frictional body locking portion 71 is provided at the other end of the main body 7, and the frictional body 3 is temporarily locked to the frictional body locking portion 71 when the frictional body is used. The Thereby, loss of the protection member 4 removed from the friction body 3 can be prevented. The friction body locking portion 71 includes a locking hole into which the rod portion 41 can be fitted. The friction body locking portion 73 includes a protruding wall portion that can be accommodated in the side wall 43 of the protection member 4 when the protection member 4 is a bottomed cylindrical body.
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。
In addition, the friction tool 6 of the present invention does not serve as a thermochromic writing instrument, does not include a thermochromic ink in the main body 7, and does not include a nib capable of discharging the thermochromic ink at the end of the main body 7. .
＜摩擦体と保護部材の第２の構成＞
図９に摩擦体３と保護部材４の他の構成（第２の構成）を示す。
本構成は、本発明の第１、第２、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。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。前記摩擦体３の頂壁の中心部には取付孔３２が設けられる。
<Second Configuration of Friction Body and Protection Member>
FIG. 9 shows another configuration (second configuration) of the friction body 3 and the protection member 4.
This configuration is employed in the thermochromic writing instrument 1 of the first, second, and third embodiments of the present invention and the friction tool 6 of the fourth embodiment.
The friction body 3 is made of a low wear elastic material (for example, SBS resin, SEBS resin, silicone resin). The outer surface of the top wall of the friction body 3 is planar, the outer surface of the side wall of the friction body 3 is straight (right cylindrical) or tapered, and the gap 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 planar 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. A mounting hole 32 is provided at the center of the top wall of the friction body 3.
保護部材４は、合成樹脂（例えば、ポリカーボネイト、ポリプロピレン、ポリアセタール、ＡＢＳ樹脂等）からなる。前記保護部材４は、ロッド部４１と、該ロッド部４１と連設される頂壁４２（円板状頂壁）とからなる。前記頂壁４２の外径は、ロッド部４１より大きい外径を有するとともに摩擦体３の外径より大きく形成される。前記保護部材４のロッド部４１の外面が、摩擦体３の取付孔３２内面と着脱自在に嵌合される。前記嵌合構造は、圧入嵌合以外に、例えば、凹凸嵌合（図１０）、ネジ嵌合（図１１）等を採用することができる。
The protective member 4 is made of a synthetic resin (for example, polycarbonate, polypropylene, polyacetal, ABS resin, etc.). The protection member 4 includes a rod portion 41 and a top wall 42 (disk-shaped top wall) that is connected to the rod portion 41. The top wall 42 has an outer diameter larger than the rod portion 41 and larger than the outer diameter of the friction body 3. The outer surface of the rod portion 41 of the protection member 4 is detachably fitted to the inner surface of the attachment hole 32 of the friction body 3. The fitting structure can employ, for example, concave-convex fitting (FIG. 10), screw fitting (FIG. 11), etc., in addition to press-fitting fitting.
本構成を採用した熱変色性筆記具１及び摩擦具６は、前記摩擦体３の頂部に取付孔３２を設け、前記摩擦体３の取付孔３２内面と着脱自在に嵌合する保護部材４を備え、前記摩擦体３の取付孔３２内面に前記保護部材４が嵌合された状態において、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 and the friction tool 6 adopting this configuration are provided with a mounting member 32 at the top of the friction body 3 and a protective member 4 that is detachably fitted to the inner surface of the mounting hole 32 of the friction body 3. In the state where the protective member 4 is fitted to the inner surface of the mounting hole 32 of the friction body 3, the top of the protection member 4 is more outward than the top of the friction body 3 (that is, outward in the friction body protruding direction). By being positioned, when the friction body is not used, contact with the fingertip of the user, contact between the friction body 3 and 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 the clothes) It is possible to prevent the dirt and dust from adhering to the friction body 3 (that is, the friction body becomes dirty).
また、本構成を採用した熱変色性筆記具１及び摩擦具６は、前記保護部材４と前記摩擦体３の取付孔３２内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、保護部材４と、低摩耗性の弾性材料からなる摩擦体３の取付孔３２内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。
In addition, the thermochromic writing instrument 1 and the friction tool 6 adopting this configuration are configured so that the protective member 4 and the inner surface of the attachment hole 32 of the friction body 3 are detachably directly fitted, so that the friction body is not used. At this time, a stable fitting state between the protective member 4 and the inner surface of the mounting hole 32 of the friction body 3 made of a low-abrasion elastic material can be maintained, and the protective member 4 is prevented from being accidentally dropped from the friction body 3. it can.
また、本構成を採用した熱変色性筆記具１及び摩擦具６は、前記保護部材４が、取付孔３２内面と嵌合するロッド部４１と、該ロッド部４１と連設され且つロッド部４１の外径より大きい外径を有する頂壁４２とを備えることにより、保護部材４を着脱する際に保護部材４の頂壁４２を把持でき、保護部材４の着脱が容易となり、しかも、保護部材４の頂壁４２により摩擦体３の頂部の汚れを一層防止できる。
Further, in the thermochromic writing instrument 1 and the frictional tool 6 adopting this configuration, the protection member 4 is connected to the inner surface of the mounting hole 32, the rod part 41 is connected to the rod part 41, and the rod part 41 By providing the top wall 42 having an outer diameter larger than the outer diameter, the top wall 42 of the protection member 4 can be gripped when the protection member 4 is attached and detached, and the protection member 4 can be easily attached and detached. The top wall 42 can further prevent the top of the friction body 3 from being soiled.
＜摩擦体と保護部材の第３の構成＞
図１０に摩擦体３と保護部材４の他の構成（第３の構成）を示す。
本構成は、図８の構成の変形例である。
本構成は、本発明の第１、第２、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。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。前記摩擦体３の頂壁の中心部には取付孔３２が設けられる。前記取付孔３２の内面には、内向突起３２ａが形成される。
<Third Configuration of Friction Body and Protection Member>
FIG. 10 shows another configuration (third configuration) of the friction body 3 and the protection member 4.
This configuration is a modification of the configuration of FIG.
This configuration is employed in the thermochromic writing instrument 1 of the first, second, and third embodiments of the present invention and the friction tool 6 of the fourth embodiment.
The friction body 3 is made of a low wear elastic material (for example, SBS resin, SEBS resin, silicone resin). The outer surface of the top wall of the friction body 3 is planar, the outer surface of the side wall of the friction body 3 is straight (right cylindrical) or tapered, and the gap 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 planar 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. A mounting hole 32 is provided at the center of the top wall of the friction body 3. An inward projection 32 a is formed on the inner surface of the mounting hole 32.
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）からなる。前記保護部材４は、ロッド部４１と、該ロッド部４１と連設される頂壁４２と、該頂壁４２に連設され且つ前記ロッド部４１を包囲する筒状の側壁４３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。前記ロッド部４１の外面に外向突起４１ａが形成される。取付孔３２内面にロッド部４１外面を嵌合させた際、前記外向突起４１ａと前記内向突起３２ａとが乗り越え係止される。即ち、取付孔３２内面とロッド部４１外面とが凹凸嵌合される。即ち、前記保護部材４のロッド部４１の外面が、摩擦体３の取付孔３２内面と着脱自在に嵌合される。前記保護部材４のスムーズな着脱を得るために、前記筒状の側壁４３と摩擦体３とは非接触状態が維持されることが好ましいが、両者は僅かに接触してもよい。
The protective member 4 is made of a synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.). The protective member 4 has one end including a rod portion 41, a top wall 42 that is continuous with the rod portion 41, and a cylindrical side wall 43 that is continuous with the top wall 42 and surrounds the rod portion 41. Is a bottomed cylindrical body (for example, a bottomed cylindrical body) opened. An outward projection 41 a is formed on the outer surface of the rod portion 41. When the outer surface of the rod portion 41 is fitted to the inner surface of the mounting hole 32, the outward projection 41a and the inward projection 32a get over and are locked. In other words, the inner surface of the mounting hole 32 and the outer surface of the rod portion 41 are engaged with each other. That is, the outer surface of the rod portion 41 of the protection member 4 is detachably fitted to the inner surface of the attachment hole 32 of the friction body 3. In order to obtain smooth attachment and detachment of the protective member 4, it is preferable that the cylindrical side wall 43 and the friction body 3 are maintained in a non-contact state, but both may be slightly in contact with each other.
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の取付孔３２に前記保護部材４のロッド部４１を嵌合させた際、前記段部８と前記保護部材４の側壁４３端部または前記段部８と前記保護部材４の側壁４３内面とが当接される。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。
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 rod portion 41 of the protection member 4 is fitted into the mounting hole 32 of the friction body 3. In this case, the step portion 8 and the end portion of the side wall 43 of the protection member 4 or the step portion 8 and the inner surface of the side wall 43 of the protection member 4 are brought into contact with each other. In the case of the thermochromic writing instrument 1, the step 8 is formed on the shaft cylinder 2 or the friction body 3, and in the case of the friction tool 6, the step 8 is formed on the main body 7 or the friction body 3.
本構成を採用した熱変色性筆記具１及び摩擦具６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と同様の作用効果を奏する。
The thermochromic writing instrument 1 and the friction tool 6 adopting this configuration have the same effects as the thermochromic writing instrument 1 of the first to third embodiments and the friction tool 6 of the fourth embodiment.
＜摩擦体と保護部材の第４の構成＞
図１１に摩擦体３と保護部材４の他の構成（第４の構成）を示す。
本構成は、図８の構成の変形例である。
本構成は、本発明の第１、第２、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。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。前記摩擦体３の頂壁の中心部には取付孔３２が設けられる。前記取付孔３２の内面には、メネジ部３２ｂが形成される。
<Fourth Configuration of Friction Body and Protection Member>
FIG. 11 shows another configuration (fourth configuration) of the friction body 3 and the protection member 4.
This configuration is a modification of the configuration of FIG.
This configuration is employed in the thermochromic writing instrument 1 of the first, second, and third embodiments of the present invention and the friction tool 6 of the fourth embodiment.
The friction body 3 is made of a low wear elastic material (for example, SBS resin, SEBS resin, silicone resin). The outer surface of the top wall of the friction body 3 is planar, the outer surface of the side wall of the friction body 3 is straight (right cylindrical) or tapered, and the gap 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 planar 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. A mounting hole 32 is provided at the center of the top wall of the friction body 3. A female screw portion 32 b is formed on the inner surface of the mounting hole 32.
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）からなる。前記保護部材４は、ロッド部４１と、該ロッド部４１と連設される頂壁４２と、該頂壁４２に連設され且つ前記ロッド部４１を包囲する筒状の側壁４３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。前記ロッド部４１の外面にオネジ部４１ｂが形成される。取付孔３２内面にロッド部４１外面を嵌合させた際、前記オネジ部４１ｂと前記メネジ部３２ｂとが螺合される。即ち、取付孔３２内面とロッド部４１外面とがネジ嵌合される。即ち、前記保護部材４のロッド部４１の外面が、摩擦体３の取付孔３２内面と着脱自在に嵌合される。前記保護部材４のスムーズな着脱を得るために、前記筒状の側壁４３と摩擦体３とは非接触状態が維持されることが好ましいが、両者は僅かに接触してもよい。
The protective member 4 is made of a synthetic resin (for example, polycarbonate, polyethylene, polypropylene, polyacetal, ABS resin, etc.). The protective member 4 has one end including a rod portion 41, a top wall 42 that is continuous with the rod portion 41, and a cylindrical side wall 43 that is continuous with the top wall 42 and surrounds the rod portion 41. Is a bottomed cylindrical body (for example, a bottomed cylindrical body) opened. A male thread portion 41 b is formed on the outer surface of the rod portion 41. When the outer surface of the rod portion 41 is fitted to the inner surface of the mounting hole 32, the male screw portion 41b and the female screw portion 32b are screwed together. That is, the inner surface of the mounting hole 32 and the outer surface of the rod portion 41 are screwed together. That is, the outer surface of the rod portion 41 of the protection member 4 is detachably fitted to the inner surface of the attachment hole 32 of the friction body 3. In order to obtain smooth attachment and detachment of the protective member 4, it is preferable that the cylindrical side wall 43 and the friction body 3 are maintained in a non-contact state, but both may be slightly in contact with each other.
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の取付孔３２に前記保護部材４のロッド部４１を嵌合させた際、前記段部８と前記保護部材４の側壁４３端部または前記段部８と前記保護部材４の側壁４３内面とが当接される。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。
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 rod portion 41 of the protection member 4 is fitted into the mounting hole 32 of the friction body 3. In this case, the step 8 and the end of the side wall 43 of the protection member 4 or the step 8 and the inner surface of the side wall 43 of the protection member 4 are brought into contact with each other. In the case of the thermochromic writing instrument 1, the step 8 is formed on the shaft cylinder 2 or the friction body 3, and in the case of the friction tool 6, the step 8 is formed on the main body 7 or the friction body 3.
本構成を採用した熱変色性筆記具１及び摩擦具６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と同様の作用効果を奏する。
The thermochromic writing instrument 1 and the friction tool 6 adopting this configuration have the same effects as the thermochromic writing instrument 1 of the first to third embodiments and the friction tool 6 of the fourth embodiment.
