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、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。
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, wherein the protection member 4 is detachably provided on the friction body side, and the protection member 4 is mounted on the friction body side in the state where the protection member 4 is mounted on the friction body side. It is a requirement that the top of 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 according to the first aspect of the invention comprises a protective member 4 that can be detachably mounted on the friction body side, and the top of the protective member 4 is in the state where the protective member 4 is mounted on the friction body side. By being positioned outward from the top of the friction body 3 (that is, outward in the direction in which the friction body protrudes), when the friction body is not used, contact with the user's fingertips, friction body 3 and the inner surface of the housing body (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 the dirt or dust from adhering to the friction body 3 (that is, the friction body becomes dirty).
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 according to the first aspect of the invention, the protective member 4 may be attached to the friction body 3 in a detachable and direct manner or to a friction body side member. In the thermochromic writing instrument 1 of the first invention, the shape of the protective member 4 may be any of a cylindrical shape, a plate shape, a rod shape, a plurality of protruding piece shapes, 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。
According to a second invention of the present application, in the thermochromic writing instrument 1 of the first invention, the protection member 4 is cylindrical, and the protection member 4 is mounted on the friction body side in the state where the protection member 4 is mounted on the friction body side. It is necessary to surround the outer peripheral surface of the friction body 3.
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。
When the friction body is not used, the thermochromic writing instrument 1 of the second invention is a user's fingertip, 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 clothes pocket). Can be reliably avoided, and the friction body 3 can be reliably prevented from becoming 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。
According to a third invention of the present application, 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. 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。
When the frictional body is not used, the thermochromic writing instrument 1 of the third invention is a stable fit between the inner peripheral surface of the cylindrical protective member 4 and the outer peripheral surface of the frictional body 3 made of a low-abrasion elastic material. The combined state can be maintained, and the protective member 4 can be prevented from inadvertently falling off 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 directly and detachably fitted to the outer fitting portion is provided on the inner peripheral surface of the protection member 4. Examples of the fitting between the inner circumferential surface of the protective member 4 and the outer circumferential surface of the friction body 3 include press fitting, uneven fitting, and screw fitting.
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。
According to a fourth invention of the present application, in the thermochromic writing instrument 1 of the third invention, 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 4 is provided with a ventilation means for communicating between the inside and the outside.
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。
In the thermochromic writing instrument 1 of the fourth invention, when the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the inner portion of the protective member 4 is not pressurized / depressurized. 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。
According to a fifth invention of the present application, in the thermochromic writing instrument 1 according to the fourth invention, the protection member 4 includes a top wall and a cylindrical side wall continuously connected to the top wall. It is a requirement that a ventilation hole 42 as the ventilation means is provided in the top wall or side wall of the protection member 4.
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 protective member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the inside and the outside of the protective member 4 are connected by the vent hole 42. Communication can be ensured.
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。
According to a sixth invention of the present application, in the thermochromic writing instrument 1 according to the fourth invention, the protective member 4 includes a top wall and a cylindrical side wall continuously connected to the top wall. It is a requirement that a ventilation path as the ventilation means is provided between the inner peripheral surface of the side wall of the protective 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 protective member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the inside and the outside of the protective member 4 are securely connected by the air passage. Can be communicated to. The thermochromic writing instrument 1 according to the sixth aspect of the invention has a bottomed cylindrical shape in which the friction body 3 is not provided with a vent hole on the top wall or side wall, even though the friction body is not used. It can be covered with the body protection member 4, dust and dust can be prevented from entering the protection member 4, and contamination of 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。
According to a seventh invention of the present application, in the thermochromic writing instrument 1 of the first to sixth 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 comprises the friction body 3 at the rear end of the shaft tube 2, it can be written using the pen tip 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。
According to an eighth aspect of the present invention, in the thermochromic writing instrument 1 of the seventh aspect, a cursive body is accommodated in the shaft cylinder 2 so as to be movable in the front-rear direction, and a thermochromic ink is contained in the cursive 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 is 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 according to the seventh invention, further comprising a cap 5 that is detachably attached to the front outer surface and the rear outer surface of the shaft tube 2, and the inner surface of the cap 5 includes: 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. 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 according to the ninth aspect of the invention, the cap 5 is mounted on 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.
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。
According to a tenth aspect of the present invention, in the thermochromic writing instrument 1 according to any one of the first to sixth 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 includes the friction body 3 on the outer surface of the top 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 is that, in the thermochromic writing instrument 1 of the first to tenth inventions, the removed protective member 4 is detachably provided in a portion 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 of the eleventh aspect of the invention can prevent the protective member 4 removed from the friction body side from being lost. Examples of the part other than the friction body include the shaft tube 2, the cap 5, the operation unit 22, and a clip.
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。
The twelfth 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. The inner peripheral surface of the protection member 4 made of a bottomed cylindrical body and the outer peripheral surface of the friction body 3 are directly and detachably fitted, and the protection member 4 is fitted to the friction body 3. In this state, it is a requirement that the top portion of the protection member 4 is located outside the top portion 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。
When the friction body is not used, the friction tool 6 of the twelfth invention is in contact with 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). ), And it is possible to prevent dirt, dust and the like from adhering to the friction body 3 (that is, the friction body becomes dirty).
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 aspect of the invention, the protective member 4 is a bottomed cylindrical body, and the outer peripheral surface of the friction body 3 is protected by the protective member 4 when the protective member 4 is fitted to the friction body 3. Besieged. As a result, when the friction body is not used, 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. 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。
Further, the friction tool 6 of the twelfth aspect of the present invention is such that the inner peripheral surface of the protective member 4 made of a bottomed cylindrical body and the outer peripheral surface of the friction body 3 are directly and detachably fitted, 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-abrasion elastic material can be maintained, and the protection member 4 is not prepared from the friction body 3 Can be prevented from falling off. Examples of the fitting between the inner circumferential surface of the protective member 4 and the outer circumferential surface of the friction body 3 include press fitting, uneven fitting, and screw fitting.
Note that 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。
In a thirteenth invention of the present application, in the friction tool 6 of the twelfth invention, 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 a requirement that a ventilation means for communicating the inside and the outside is provided.
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。
In the friction tool 6 of the thirteenth aspect, when the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the protective member 4 is not pressurized or depressurized inside the protective member 4. 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。
The fourteenth invention of the present application is the bottomed cylindrical body in the friction member 6 of the thirteenth invention, wherein the protective member 4 is composed of a top wall and a cylindrical side wall provided continuously to the top wall. It is a requirement that a ventilation hole 42 as the ventilation means is provided in the top wall or the side wall of the protection member 4.
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 aspect of the 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 inside and the outside of the protection member 4 are reliably secured by the vent holes 42. Can communicate.
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 bottomed cylindrical body in the friction device 6 of the thirteenth invention, wherein the protection member 4 includes a top wall and a cylindrical side wall provided continuously to the top wall. It is a requirement that a ventilation path as the ventilation means is provided between the inner peripheral surface of the side wall of the protective 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。
In the friction tool 6 of the fifteenth aspect of the invention, when the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 are attached and detached, the inside and the outside of the protective member 4 are reliably communicated by the air passage. Can be made. In addition, the friction tool 6 of the fifteenth aspect of the present invention is a bottomed cylindrical body that does not have a ventilation hole in the top wall or side wall, even though the friction body is not used. It can be covered with the protection member 4, dust and dust can be prevented from entering the protection member 4, and contamination 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。
The sixteenth invention of the present application is characterized in that, in the friction tool 6 of the twelfth to fifteenth inventions, the removed protective member 4 is detachably provided in 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。
In the sixteenth invention, the friction tool 6 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。
<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 includes a shaft tube 2, a writing body 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 at a front end hole of the shaft tube 2. The operation unit 22 is made to appear more and less, 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 side. 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-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 shaft cylinder 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 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 directly and detachably fitted. The specific structure of the friction body 3 and the protection member 4 is any of the structures shown in FIGS.
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 according to the present embodiment is detachably provided with a protective member 4 that can be attached to the friction body side. When the protective member 4 is attached to the friction body side, the top of the protective member 4 is the friction body 3. It is located outside the top. Thereby, 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 or dust from adhering to the friction body 3 (that is, the friction body 3 is soiled).
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 protection member 4 in a state where the protection member 4 is mounted on the friction body side. As a result, when the friction body is not used, 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. 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。
In addition, the thermochromic writing instrument 1 of the present embodiment has a tubular shape when the friction member is not used, because the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction member 3 are directly and detachably fitted. 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 the protective member 4 is inadvertently dropped from the friction body 3. Can be prevented. Examples of the fitting between the inner circumferential surface of the protective member 4 and the outer circumferential surface of the friction body 3 include press-fitting fitting (FIG. 9), uneven fitting (FIG. 10), screw fitting (FIG. 11), and the like. It is 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。
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、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、一時的に保護部材４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 tube, an operation unit, a clip). Specifically, in the present embodiment, a frictional body locking portion 23 is provided on the side wall of the shaft tube 2, and the protection member 4 is temporarily locked to the frictional body locking portion 23 when the frictional body is used. The Thereby, the loss of the protection member 4 removed from the friction body side can be prevented.
＜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。
<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.
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, From 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 protection member 4 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-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 shaft cylinder 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 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 directly and detachably fitted. In addition, the specific structure of the said friction body 3 and the protection member 4 employ | adopts any structure of FIG. 9 thru | or FIG.
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 according to the present embodiment is detachably provided with a protective member 4 that can be attached to the friction body side. When the protective member 4 is attached to the friction body side, the top of the protective member 4 is the friction body 3. It is located outside the top. Thereby, 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 or dust from adhering to the friction body 3 (that is, the friction body 3 is soiled).
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 protection member 4 in a state where the protection member 4 is mounted on the friction body side. As a result, when the friction body is not used, 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. 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。
In addition, the thermochromic writing instrument 1 of the present embodiment has a tubular shape when the friction member is not used, because the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction member 3 are directly and detachably fitted. 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 the protective member 4 is inadvertently dropped from the friction body 3. Can be prevented. Examples of the fitting between the inner circumferential surface of the protective member 4 and the outer circumferential surface of the friction body 3 include press-fitting fitting (FIG. 9), uneven fitting (FIG. 10), screw fitting (FIG. 11), and the like. It is 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。
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、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。
In addition, 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 are mounted on the inner surface of the cap 5. A rear insertion fitting portion 51 for fitting with the rear outer surface 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 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、一時的に保護部材４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 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 protection member 4 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 side can be prevented.
＜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。
<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.
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, It comprises 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 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。
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. The shaft cylinder 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 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 protection member 4 A configuration in which the inner peripheral surface and the outer peripheral surface of the friction body 3 are directly detachably fitted, or the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body holding portion 52 are detachably fitted. In addition, there is a configuration in which the inner peripheral surface of the protection member 4 and the outer peripheral surface of the friction body 3 are directly and detachably fitted. The fitting between the inner circumferential surface of the protection member 4 and the outer circumferential surface of the friction body holding portion 52 and the fitting between the inner circumferential surface of the protection member 4 and the outer circumferential surface of the friction body 3 are, for example, press-fit. (FIG. 9), uneven 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, ventilation means (for example, in FIGS. 12 to 15) that communicates the inside and the outside of the protection member 4. Configuration) 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 according to the present embodiment is detachably provided with a protective member 4 that can be attached to the friction body side. When the protective member 4 is attached to the friction body side, the top of the protective member 4 is the friction body 3. It is located outside the top. Thereby, 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 or dust from adhering to the friction body 3 (that is, the friction body 3 is soiled).
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 protection member 4 in a state where the protection member 4 is mounted on the friction body side. As a result, when the friction body is not used, 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. 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 cylindrical shape when the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3 are directly and detachably fitted. 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-abrasion elastic material can be maintained, and the protective member 4 is prevented from inadvertently falling off 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。
Further, the thermochromic writing instrument 1 of the present embodiment accommodates the thermochromic ink inside the shaft cylinder 2, and is provided with a nib 21 capable of discharging the thermochromic ink at the front end of the shaft cylinder 2. A cap 5 that is detachably attached to the front outer surface of the shaft tube 2 is provided, and the friction body 3 is provided on the top outer surface of the cap 5, whereby the cap 5 is removed from the pen tip side, and the friction body 3 Can be written with the pen tip 21 in a state of being covered with the protection member 4, and only when the friction body 3 is used, the protection member 4 can be removed from the friction body 3 and used, and dirt on the friction body 3 when not in use can be removed. 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、一時的に保護部材４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 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 protection member 4 is temporarily locked to the frictional body locking portion 23 when the friction body is used. Is done. Thereby, the loss of the protection member 4 removed from the friction body side can be prevented.
＜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 Fourth Embodiment>
16 and 17 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-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 main body 7 is made of synthetic resin or metal. 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）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 formed of a bottomed cylindrical body made of a 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 directly and detachably fitted. The specific structure of the friction body 3 and the protection member 4 is any of the structures shown in FIGS.
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 a low-abrasion elastic material capable of rubbing an image or handwriting of thermochromic ink and thermally discoloring the image or handwriting by friction heat generated at that time. The friction member 6 is configured such that the inner peripheral surface of the protection member 4 made of a bottomed cylindrical body and the outer peripheral surface of the friction body 3 are directly and detachably fitted, and the protection member 4 is fitted to the friction body 3. In the combined state, the top portion of the protection member 4 is located outward from the top portion of the friction body 3. Thereby, 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 of the present embodiment, the protection member 4 is formed of a bottomed cylindrical body, and the top and outer circumferences of the friction body 3 are protected by the protection member 4 in a state where the protection member 4 is fitted to the friction body 3. The face is surrounded. As a result, when the friction body is not used, 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. 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。
In addition, 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 cylindrical body and the outer peripheral surface of the friction body 3 are directly and detachably fitted to each other. When not in use, a stable fitting state can be maintained between the inner peripheral surface of the cylindrical protective member 4 and the outer peripheral surface of the friction body 3 made of a low-abrasion elastic material. It can be prevented from falling off. Examples of the fitting between the inner circumferential surface of the protective member 4 and the outer circumferential surface of the friction body 3 include press-fitting fitting (FIG. 9), uneven fitting (FIG. 10), screw fitting (FIG. 11), and the like. It is done.
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. .
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、一時的に保護部材４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 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 7 and the side wall of the main body 7). Specifically, in the present embodiment, a friction body locking portion 71 is provided at the other end of the main body 7, and the protection member 4 is temporarily locked to the friction body locking portion 71 when the friction body is used. The Thereby, the loss of the protection member 4 removed from the friction body side can be prevented.
＜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 Configuration of Friction Body and Protection Member>
FIG. 9 shows a first configuration of the friction body 3 and the protection member 4. This configuration is employed 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, there is formed a friction portion 31 that rubs the handwriting of the thermochromic ink on the paper surface. An outer fitting portion 32 that is fitted to the protective member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The top wall outer surface (friction part 31) of the friction body 3 has a convex curved surface, and the side wall outer peripheral surface of the friction body 3 has a straight shape (right cylindrical shape) or a taper 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 cylindrical body (for example, a bottomed cylindrical body) having one end formed of a top wall and a cylindrical side wall provided continuously to 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 has a straight outer surface, the inner fitting portion 41 of the protection member 4 has a straight inner surface, and the outer fitting portion 32 of the friction member 3 and the protection member. Four inner fitting parts 41 are detachably press-fitted. 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 fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4. Are press-fitted and the stepped portion 8 and the opening end of the protective member 4 or the stepped portion 8 and the inner wall of the protective 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.
＜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 employed 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, there is formed a friction portion 31 that rubs the handwriting of the thermochromic ink on the paper surface. An outer fitting portion 32 that is fitted to the protective member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The top wall outer surface (friction part 31) of the friction body 3 has a convex curved surface, and the side wall outer peripheral surface of the friction body 3 has a straight shape (right cylindrical shape) or a taper 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 cylindrical body (for example, a bottomed cylindrical body) having one end formed of a top wall and a cylindrical side wall provided continuously to 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 outward protrusions (for example, an annular protrusion or a plurality of protrusion groups), and the inner fitting portion 41 of the protection member 4 is 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 protective member 4 are detachably fitted (so-called over-fitting fitting). 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 fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4. And the stepped portion 8 and the opening end of the protective member 4 or the stepped portion 8 and the inner wall of the protective 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.
＜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 configuration of the friction body 3 and the protection member 4. This configuration is employed 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, there is formed a friction portion 31 that rubs the handwriting of the thermochromic ink on the paper surface. An outer fitting portion 32 that is fitted to the protective member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The top wall outer surface (friction part 31) of the friction body 3 has a convex curved surface, and the side wall outer peripheral surface of the friction body 3 has a straight shape (right cylindrical shape) or a taper 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 cylindrical body (for example, a bottomed cylindrical body) having one end formed of a top wall and a cylindrical side wall provided continuously to 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 screw portion, the inner fitting portion 41 of the protective member 4 is a female screw portion, and the inner fitting portion 32 of the friction body 3 and the inner fitting portion of the protective member 4 are fitted. The mating portion 41 is detachably screwed (that is, screwed). 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 fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4. And the stepped portion 8 and the opening end of the protective member 4 or the stepped portion 8 and the inner wall of the protective 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.
＜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 Configuration of Friction Body and Protection Member>
FIG. 12 shows a fourth configuration of the friction body 3 and the protection member 4. This configuration is employed 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, there is formed a friction portion 31 that rubs the handwriting of the thermochromic ink on the paper surface. An outer fitting portion 32 that is fitted to the protective member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The top wall outer surface (friction part 31) of the friction body 3 has a convex curved surface, and the side wall outer peripheral surface of the friction body 3 has a straight shape (right cylindrical shape) or a taper 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 cylindrical body (for example, a bottomed cylindrical body) composed of a top wall and a cylindrical side wall provided continuously to 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 protective member 4 are press-fitted and detachably fitted. In this configuration, in addition to the press-fitting fitting (FIG. 9), the concave-convex fitting (FIG. 10) and the screw fitting (FIG. 11) can be adopted as the fitting structure. 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 fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4. Are engaged with each other, the stepped portion 8 and the opening end of the protective member 4 or the stepped portion 8 and the inner wall of the protective 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.
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 protective member 4 is a bottomed cylindrical body having one end formed of a top wall and a cylindrical side wall provided continuously to the top wall, and the top and / or side walls of the protective member 4 are A ventilation hole 42 is formed as the ventilation means. When the inner circumferential surface of the protection member 4 and the outer circumferential surface of the friction body 3 are attached and detached, the inside and the outside of the protection member 4 can be reliably communicated with each other by the vent holes 42. Thereby, when attaching and detaching the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3, the protective member 4 is smoothly attached to and detached from the friction body 3 without pressurizing and depressurizing the inside of the protective 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 Configuration of Friction Body and Protection Member>
FIG. 13 shows a fifth configuration of the friction body 3 and the protection member 4. This configuration is employed 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, there is formed a friction portion 31 that rubs the handwriting of the thermochromic ink on the paper surface. An outer fitting portion 32 that is fitted to the protective member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The outer surface of the top wall (friction part 31) of the friction body 3 is a convex curved surface, and the outer peripheral surface of the side wall of the friction body 3 is straight (right cylindrical) or tapered.
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 cylindrical body (for example, a bottomed cylindrical body) composed of a cylindrical side wall having both ends opened. 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 (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 protective member 4 are press-fitted and detachably fitted. The protective member 4 can be fitted to the friction body 3 from either opening side. In this configuration, in addition to the press-fitting fitting (FIG. 9), the concave-convex fitting (FIG. 10) and the screw fitting (FIG. 11) can be adopted as the fitting structure. 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 fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4. Are engaged with each other, the stepped portion 8 and the opening end of the protective member 4 or the stepped portion 8 and the inner wall of the protective 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.
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 protective member 4 is fitted to the friction body 3, the top portion is opened, and a ventilation hole 42 as a ventilation means is formed. When the inner circumferential surface of the protection member 4 and the outer circumferential surface of the friction body 3 are attached and detached, the inside and the outside of the protection member 4 can be reliably communicated with each other by the vent holes 42. Thereby, when attaching and detaching the inner peripheral surface of the protective member 4 and the outer peripheral surface of the friction body 3, the protective member 4 is smoothly attached to and detached from the friction body 3 without pressurizing and depressurizing the inside of the protective 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。
<6th structure of a friction body and a protection member>
FIG. 14 shows a sixth configuration of the friction body 3 and the protection member 4. This configuration is employed 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, there is formed a friction portion 31 that rubs the handwriting of the thermochromic ink on the paper surface. An outer fitting portion 32 that is fitted to the protective member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The outer surface of the top wall (friction part 31) of the friction body 3 is a convex curved surface, and the outer peripheral surface of the side wall of the friction body 3 is straight (right cylindrical) or tapered.
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 cylindrical body (for example, a bottomed cylindrical body) composed of a top wall and a cylindrical side wall provided continuously to 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 press-fitted and detachably fitted. In this configuration, in addition to the press-fitting fitting (FIG. 9), the concave-convex fitting (FIG. 10) and the screw fitting (FIG. 11) can be adopted as the fitting structure. 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 fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4. Are engaged with each other, the stepped portion 8 and the opening end of the protective member 4 or the stepped portion 8 and the inner wall of the protective 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.
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 protrusion 43 is formed in the inner fitting portion 41 of the protection member 4. Thereby, a ventilation path 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. When the inner circumferential surface of the protection member 4 and the outer circumferential surface of the friction body 3 are attached and detached by the air passage, the inside and the outside of the protection member 4 can be reliably 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 this configuration, when the friction body is not used, the friction body 3 can be covered with the bottomed cylindrical body protection member 4 that does not have a ventilation hole on the top wall or the side wall, even though the ventilation means is provided. It is possible to prevent dust and dust from entering the protective member 4 and to further avoid contamination of the friction body 3.
＜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。
<7th structure of a friction body and a protection member>
FIG. 15 shows a seventh configuration of the friction body 3 and the protection member 4. This configuration is employed 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, there is formed a friction portion 31 that rubs the handwriting of the thermochromic ink on the paper surface. An outer fitting portion 32 that is fitted to the protective member 4 is formed on the outer peripheral surface of the side wall of the friction portion 31. The outer surface of the top wall (friction part 31) of the friction body 3 is a convex curved surface, and the outer peripheral surface of the side wall of the friction body 3 is straight (right cylindrical) or tapered.
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 cylindrical body (for example, a bottomed cylindrical body) composed of a top wall and a cylindrical side wall provided continuously to 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 press-fitted and detachably fitted. In this configuration, in addition to the press-fitting fitting (FIG. 9), the concave-convex fitting (FIG. 10) and the screw fitting (FIG. 11) can be adopted as the fitting structure. 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 fitting portion 32 of the friction body 3 and the inner fitting portion 41 of the protection member 4. Are engaged with each other, the stepped portion 8 and the opening end of the protective member 4 or the stepped portion 8 and the inner wall of the protective 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.
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 protrusion 33 is formed in the outer fitting portion 32 of the friction body 3. Thereby, a ventilation path 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. When the inner circumferential surface of the protection member 4 and the outer circumferential surface of the friction body 3 are attached and detached by the air passage, the inside and the outside of the protection member 4 can be reliably 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 this configuration, when the friction body is not used, the friction body 3 can be covered with the bottomed cylindrical body protection member 4 that does not have a ventilation hole on the top wall or the side wall, even though the ventilation means is provided. It is possible to prevent dust and dust from entering the protective member 4 and to further avoid contamination of the friction body 3.
